:root {
  color-scheme: light;
  --font-display: "Segoe UI Variable Display", "Segoe UI", "Microsoft YaHei UI", "Microsoft YaHei", sans-serif;
  --font-body: "Segoe UI Variable Text", "Segoe UI", "Microsoft YaHei UI", "Microsoft YaHei", sans-serif;
  --font-utility: "Cascadia Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --font-sans: var(--font-body);
  --sans: var(--font-body);
  --mono: var(--font-utility);
  --page: #f5f7fb;
  --page-2: #e9edf4;
  --ink: #111318;
  --muted: #626a78;
  --soft: var(--muted);
  --hairline: rgba(20, 27, 38, 0.14);
  --glass: rgba(255, 255, 255, 0.48);
  --glass-strong: rgba(255, 255, 255, 0.68);
  --glass-soft: rgba(255, 255, 255, 0.28);
  --glass-window: #eef8fc;
  --glass-window-strong: #f7fbff;
  --blue: #0a84ff;
  --green: #30b56d;
  --coral: #ff6a4d;
  --violet: #7c5cff;
  --gold: #d9a520;
  --tensor: #00a8ff;
  --activation: #16c784;
  --loss: #ff5c7a;
  --latent: #745cff;
  --motion-ease: cubic-bezier(.2,.8,.2,1);
  --motion-spring: cubic-bezier(.16, 1, .3, 1);
  --glass-edge: rgba(255, 255, 255, 0.78);
  --depth-line: rgba(10, 132, 255, 0.18);
  --shadow: 0 18px 44px rgba(39, 49, 64, 0.09);
  --mini-shadow: 0 10px 24px rgba(39, 49, 64, 0.07);
  --radius: 20px;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #07090d;
  --page-2: #141820;
  --ink: #f8fafc;
  --muted: #a7afbd;
  --hairline: rgba(255, 255, 255, 0.16);
  --glass: rgba(24, 29, 38, 0.48);
  --glass-strong: rgba(29, 35, 46, 0.72);
  --glass-soft: rgba(255, 255, 255, 0.08);
  --glass-window: #111821;
  --glass-window-strong: #182130;
  --blue: #64b5ff;
  --green: #63d48d;
  --coral: #ff8c75;
  --violet: #a798ff;
  --gold: #f2c75c;
  --tensor: #7cc8ff;
  --activation: #7be0a3;
  --loss: #ff8ca2;
  --latent: #b0a3ff;
  --glass-edge: rgba(255, 255, 255, 0.18);
  --depth-line: rgba(100, 181, 255, 0.18);
  --shadow: 0 22px 54px rgba(0, 0, 0, 0.3);
  --mini-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 10000;
  padding: 10px 14px;
  border: 1px solid var(--tensor);
  border-radius: 8px;
  background: var(--glass-window-strong);
  color: var(--ink);
  box-shadow: var(--mini-shadow);
  font-family: var(--font-body);
  font-weight: 700;
  transform: translateY(calc(-100% - 24px));
  transition: transform 160ms ease;
}

.skip-link:focus,
.skip-link:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--tensor) 58%, transparent);
  outline-offset: 3px;
  transform: translateY(0);
}

#main-content {
  scroll-margin-top: 120px;
}

html {
  min-height: 100%;
  scroll-behavior: smooth;
}

body {
  --route-x: 0px;
  --route-slide: 42px;
  --space-index: var(--initial-space-index, 0);
  --space-scale: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 50% 18%, color-mix(in srgb, var(--tensor) 7%, transparent) 0 18%, transparent 46%),
    linear-gradient(90deg, color-mix(in srgb, var(--ink) 4%, transparent) 1px, transparent 1px),
    linear-gradient(color-mix(in srgb, var(--ink) 3%, transparent) 1px, transparent 1px),
    linear-gradient(135deg, var(--page), var(--page-2));
  background-size: auto, 88px 88px, 88px 88px, auto;
  font-family: var(--font-body);
  letter-spacing: 0;
  overflow-x: hidden;
  opacity: 1;
  transition: background 220ms ease, color 220ms ease;
}

body::before,
body::after {
  content: "";
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  width: 400vw;
  z-index: -2;
  pointer-events: none;
  will-change: transform;
  transition: transform 980ms cubic-bezier(.18,.86,.24,1), opacity 360ms var(--motion-ease);
}

body::before {
  opacity: 0.95;
  background:
    linear-gradient(90deg, transparent 0 6.2%, color-mix(in srgb, var(--ink) 32%, transparent) 6.22% 6.27%, transparent 6.3% 25%,
      transparent 25% 31.2%, color-mix(in srgb, var(--ink) 32%, transparent) 31.22% 31.27%, transparent 31.3% 50%,
      transparent 50% 56.2%, color-mix(in srgb, var(--ink) 32%, transparent) 56.22% 56.27%, transparent 56.3% 75%,
      transparent 75% 81.2%, color-mix(in srgb, var(--ink) 32%, transparent) 81.22% 81.27%, transparent 81.3% 100%),
    radial-gradient(ellipse at 12.5% 18%, color-mix(in srgb, var(--tensor) 18%, transparent), transparent 30%),
    radial-gradient(ellipse at 37.5% 45%, color-mix(in srgb, var(--activation) 16%, transparent), transparent 32%),
    radial-gradient(ellipse at 62.5% 28%, color-mix(in srgb, var(--latent) 16%, transparent), transparent 34%),
    radial-gradient(ellipse at 87.5% 54%, color-mix(in srgb, var(--loss) 14%, transparent), transparent 32%),
    linear-gradient(115deg, transparent 0 12%, color-mix(in srgb, var(--tensor) 12%, transparent) 12.1% 12.24%, transparent 12.34% 34%, color-mix(in srgb, var(--activation) 10%, transparent) 34.1% 34.24%, transparent 34.34% 62%, color-mix(in srgb, var(--latent) 10%, transparent) 62.1% 62.24%, transparent 62.34% 100%),
    linear-gradient(28deg, transparent 0 20%, color-mix(in srgb, var(--loss) 9%, transparent) 20.1% 20.24%, transparent 20.34% 48%, color-mix(in srgb, var(--tensor) 8%, transparent) 48.1% 48.24%, transparent 48.34% 100%),
    linear-gradient(90deg, transparent 0 calc(25% - 1px), color-mix(in srgb, var(--ink) 13%, transparent) calc(25% - 1px) 25%, transparent 25% calc(50% - 1px), color-mix(in srgb, var(--ink) 13%, transparent) calc(50% - 1px) 50%, transparent 50% calc(75% - 1px), color-mix(in srgb, var(--ink) 13%, transparent) calc(75% - 1px) 75%, transparent 75% 100%),
    repeating-linear-gradient(90deg, transparent 0 18px, color-mix(in srgb, var(--ink) 4%, transparent) 19px 20px),
    repeating-linear-gradient(0deg, transparent 0 18px, color-mix(in srgb, var(--ink) 3%, transparent) 19px 20px),
    linear-gradient(90deg,
      color-mix(in srgb, var(--tensor) 5%, var(--page)) 0 25%,
      color-mix(in srgb, var(--activation) 4%, var(--page)) 25% 50%,
      color-mix(in srgb, var(--latent) 5%, var(--page)) 50% 75%,
      color-mix(in srgb, var(--loss) 4%, var(--page)) 75% 100%);
  transform: translate3d(calc(var(--space-index) * -100vw), 0, 0) scale(var(--space-scale));
}

body::after {
  opacity: 0.78;
  background:
    linear-gradient(90deg, transparent 0 8%, color-mix(in srgb, var(--tensor) 26%, transparent) 8.1% 8.5%, transparent 8.6% 25%,
      transparent 25% 33%, color-mix(in srgb, var(--activation) 23%, transparent) 33.1% 33.5%, transparent 33.6% 50%,
      transparent 50% 58%, color-mix(in srgb, var(--latent) 22%, transparent) 58.1% 58.5%, transparent 58.6% 75%,
      transparent 75% 83%, color-mix(in srgb, var(--loss) 22%, transparent) 83.1% 83.5%, transparent 83.6% 100%),
    repeating-linear-gradient(90deg, transparent 0 34px, color-mix(in srgb, var(--ink) 6%, transparent) 35px 36px, transparent 37px 68px),
    repeating-linear-gradient(0deg, transparent 0 34px, color-mix(in srgb, var(--ink) 5%, transparent) 35px 36px, transparent 37px 68px),
    repeating-linear-gradient(135deg, transparent 0 118px, color-mix(in srgb, var(--tensor) 7%, transparent) 119px 120px, transparent 121px 238px),
    repeating-linear-gradient(45deg, transparent 0 152px, color-mix(in srgb, var(--activation) 5%, transparent) 153px 154px, transparent 155px 304px),
    linear-gradient(90deg,
      transparent 0 6%, color-mix(in srgb, var(--blue) 18%, transparent) 6.05% 6.12%, transparent 6.18% 25%,
      transparent 25% 31%, color-mix(in srgb, var(--green) 16%, transparent) 31.05% 31.12%, transparent 31.18% 50%,
      transparent 50% 56%, color-mix(in srgb, var(--violet) 14%, transparent) 56.05% 56.12%, transparent 56.18% 75%,
      transparent 75% 81%, color-mix(in srgb, var(--coral) 16%, transparent) 81.05% 81.12%, transparent 81.18% 100%);
  transform: translate3d(calc(var(--space-index) * -100vw), 0, 0);
}

:root[data-theme="dark"] body::before {
  background:
    linear-gradient(90deg, transparent 0 6.2%, rgba(255, 255, 255, 0.18) 6.22% 6.27%, transparent 6.3% 25%,
      transparent 25% 31.2%, rgba(255, 255, 255, 0.16) 31.22% 31.27%, transparent 31.3% 50%,
      transparent 50% 56.2%, rgba(255, 255, 255, 0.16) 56.22% 56.27%, transparent 56.3% 75%,
      transparent 75% 81.2%, rgba(255, 255, 255, 0.16) 81.22% 81.27%, transparent 81.3% 100%),
    conic-gradient(from 90deg at 12.5% 42%, rgba(124, 200, 255, 0.18), transparent 18%, rgba(123, 224, 163, 0.13) 32%, transparent 48%, rgba(176, 163, 255, 0.12) 68%, transparent 100%),
    conic-gradient(from 90deg at 37.5% 42%, rgba(123, 224, 163, 0.16), transparent 20%, rgba(124, 200, 255, 0.11) 36%, transparent 52%, rgba(255, 140, 162, 0.11) 72%, transparent 100%),
    conic-gradient(from 90deg at 62.5% 42%, rgba(176, 163, 255, 0.17), transparent 20%, rgba(124, 200, 255, 0.11) 38%, transparent 54%, rgba(123, 224, 163, 0.1) 72%, transparent 100%),
    conic-gradient(from 90deg at 87.5% 42%, rgba(255, 140, 162, 0.15), transparent 20%, rgba(124, 200, 255, 0.1) 36%, transparent 54%, rgba(123, 224, 163, 0.1) 74%, transparent 100%),
    linear-gradient(90deg, transparent 0 calc(25% - 1px), rgba(255, 255, 255, 0.12) calc(25% - 1px) 25%, transparent 25% calc(50% - 1px), rgba(255, 255, 255, 0.12) calc(50% - 1px) 50%, transparent 50% calc(75% - 1px), rgba(255, 255, 255, 0.12) calc(75% - 1px) 75%, transparent 75% 100%),
    repeating-linear-gradient(90deg, transparent 0 18px, rgba(255, 255, 255, 0.04) 19px 20px),
    repeating-linear-gradient(0deg, transparent 0 18px, rgba(255, 255, 255, 0.035) 19px 20px),
    linear-gradient(90deg,
      color-mix(in srgb, var(--blue) 9%, var(--page)) 0 25%,
      color-mix(in srgb, var(--green) 7%, var(--page)) 25% 50%,
      color-mix(in srgb, var(--violet) 8%, var(--page)) 50% 75%,
      color-mix(in srgb, var(--coral) 7%, var(--page)) 75% 100%);
}

:root[data-theme="dark"] body::after {
  background:
    repeating-linear-gradient(90deg, transparent 0 71px, rgba(255, 255, 255, 0.055) 72px 73px, transparent 74px 142px),
    repeating-linear-gradient(0deg, transparent 0 71px, rgba(255, 255, 255, 0.04) 72px 73px, transparent 74px 142px),
    linear-gradient(90deg,
      transparent 0 6%, rgba(100, 181, 255, 0.16) 6.05% 6.12%, transparent 6.18% 25%,
      transparent 25% 31%, rgba(99, 212, 141, 0.14) 31.05% 31.12%, transparent 31.18% 50%,
      transparent 50% 56%, rgba(167, 152, 255, 0.14) 56.05% 56.12%, transparent 56.18% 75%,
      transparent 75% 81%, rgba(255, 140, 117, 0.14) 81.05% 81.12%, transparent 81.18% 100%);
}

body.is-ready {
  opacity: 1;
}

body::selection {
  background: color-mix(in srgb, var(--blue) 24%, transparent);
}

body.is-route-entering.route-forward {
  --route-x: var(--route-slide);
}

body.is-route-entering.route-back {
  --route-x: calc(var(--route-slide) * -1);
}

body.is-route-leaving.route-forward {
  --route-x: calc(var(--route-slide) * -1);
  --space-scale: 1.018;
}

body.is-route-leaving.route-back {
  --route-x: var(--route-slide);
  --space-scale: 1.012;
}

body.is-route-leaving:not(.route-back) {
  --route-x: calc(var(--route-slide) * -1);
}

body.modal-open {
  overflow: hidden;
}

body,
button,
input,
textarea {
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", "Microsoft YaHei", sans-serif;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  border: 0;
  cursor: pointer;
}

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--blue) 62%, transparent);
  outline-offset: 4px;
}

.cursor-dot,
.cursor-ring,
.cursor-glow {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  opacity: 0;
}

.cursor-glow {
  z-index: 0;
  width: 440px;
  height: 440px;
  border-radius: 50%;
  background:
    radial-gradient(circle, color-mix(in srgb, var(--blue) 22%, transparent) 0 10%, color-mix(in srgb, var(--blue) 12%, transparent) 24%, transparent 68%);
  filter: blur(4px);
  transition: opacity 220ms ease;
}

.cursor-dot,
.cursor-ring {
  z-index: 100;
}

.cursor-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 14px color-mix(in srgb, var(--blue) 48%, transparent);
}

.cursor-ring {
  width: 34px;
  height: 34px;
  border: 1.5px solid color-mix(in srgb, var(--blue) 64%, transparent);
  border-radius: 50%;
  background: color-mix(in srgb, var(--blue) 10%, transparent);
  box-shadow:
    0 0 0 5px color-mix(in srgb, var(--blue) 8%, transparent),
    0 0 24px color-mix(in srgb, var(--blue) 24%, transparent);
  transition: width 160ms ease, height 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.cursor-ring.is-pressed {
  width: 48px;
  height: 48px;
  border-color: var(--blue);
  box-shadow:
    0 0 0 8px color-mix(in srgb, var(--blue) 12%, transparent),
    0 0 30px color-mix(in srgb, var(--blue) 34%, transparent);
}

:root[data-theme="dark"] .cursor-dot {
  background: var(--ink);
  box-shadow: 0 0 12px color-mix(in srgb, var(--blue) 32%, transparent);
}

:root[data-theme="dark"] .cursor-ring {
  border-color: color-mix(in srgb, var(--ink) 42%, transparent);
  background: color-mix(in srgb, var(--blue) 7%, transparent);
}

@media (pointer: fine) {
  .cursor-dot,
  .cursor-ring,
  .cursor-glow {
    opacity: 1;
  }
}

main,
.footer {
  position: relative;
  z-index: 1;
}

main {
  flex: 1 0 auto;
  width: 100%;
  transform: translate3d(var(--route-x), 0, 0);
  transition: transform 820ms cubic-bezier(.18,.86,.24,1), opacity 620ms var(--motion-ease), filter 620ms var(--motion-ease);
}

.space-viewport {
  width: 100%;
  overflow: hidden;
  transform: none;
}

.space-shell {
  width: 400vw;
  min-height: calc(100vh - 76px);
  display: flex;
  align-items: stretch;
  transform: translate3d(calc(var(--space-index) * -100vw), 0, 0);
  transition: transform 980ms cubic-bezier(.18,.86,.24,1);
  will-change: transform;
}

.space-panel {
  width: 100vw;
  flex: 0 0 100vw;
  min-height: calc(100vh - 76px);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 18% 0%, color-mix(in srgb, var(--tensor) 8%, transparent), transparent 36%),
    radial-gradient(ellipse at 82% 62%, color-mix(in srgb, var(--activation) 6%, transparent), transparent 40%),
    repeating-linear-gradient(90deg, transparent 0 88px, color-mix(in srgb, var(--ink) 3.5%, transparent) 89px 90px, transparent 91px 176px),
    repeating-linear-gradient(0deg, transparent 0 88px, color-mix(in srgb, var(--ink) 3%, transparent) 89px 90px, transparent 91px 176px);
}

.space-panel::before {
  position: absolute;
  top: clamp(124px, 15vh, 170px);
  right: clamp(18px, 2.8vw, 42px);
  z-index: 0;
  color: color-mix(in srgb, var(--ink) 36%, transparent);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: clamp(0.86rem, 1.1vw, 1.08rem);
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1.1;
  text-transform: uppercase;
  white-space: nowrap;
  pointer-events: none;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  text-shadow:
    0 1px 0 color-mix(in srgb, var(--glass-edge) 74%, transparent),
    0 18px 46px color-mix(in srgb, var(--blue) 10%, transparent);
}

.space-panel::before {
  padding: 12px 7px;
  border: 1px solid color-mix(in srgb, var(--ink) 10%, transparent);
  border-radius: 999px;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--glass-window-strong) 80%, transparent), color-mix(in srgb, var(--glass-window) 76%, transparent));
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, var(--glass-edge) 70%, transparent),
    0 14px 32px color-mix(in srgb, var(--blue) 8%, transparent);
}

:root[data-theme="dark"] .space-panel::before {
  color: color-mix(in srgb, var(--ink) 32%, transparent);
}

.space-panel::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.7;
  background:
    repeating-linear-gradient(90deg, transparent 0 42px, color-mix(in srgb, var(--ink) 7%, transparent) 43px 44px, transparent 45px 84px),
    repeating-linear-gradient(0deg, transparent 0 42px, color-mix(in srgb, var(--ink) 6%, transparent) 43px 44px, transparent 45px 84px),
    linear-gradient(135deg, transparent 0 22%, color-mix(in srgb, var(--tensor) 13%, transparent) 22.08% 22.22%, transparent 22.32% 100%),
    linear-gradient(45deg, transparent 0 35%, color-mix(in srgb, var(--activation) 11%, transparent) 35.08% 35.22%, transparent 35.32% 100%),
    radial-gradient(circle at 17% 25%, color-mix(in srgb, var(--tensor) 42%, transparent) 0 4px, transparent 5px),
    radial-gradient(circle at 24% 42%, color-mix(in srgb, var(--activation) 38%, transparent) 0 4px, transparent 5px),
    radial-gradient(circle at 31% 58%, color-mix(in srgb, var(--latent) 34%, transparent) 0 4px, transparent 5px),
    radial-gradient(circle at 45% 33%, color-mix(in srgb, var(--tensor) 34%, transparent) 0 4px, transparent 5px),
    radial-gradient(circle at 53% 52%, color-mix(in srgb, var(--activation) 34%, transparent) 0 4px, transparent 5px),
    radial-gradient(circle at 65% 42%, color-mix(in srgb, var(--latent) 34%, transparent) 0 4px, transparent 5px),
    radial-gradient(circle at 76% 61%, color-mix(in srgb, var(--loss) 32%, transparent) 0 4px, transparent 5px),
    linear-gradient(23deg, transparent 0 24%, color-mix(in srgb, var(--tensor) 12%, transparent) 24.1% 24.25%, transparent 24.35% 100%),
    linear-gradient(142deg, transparent 0 37%, color-mix(in srgb, var(--activation) 10%, transparent) 37.1% 37.25%, transparent 37.35% 100%);
}

.space-panel[data-panel="home"]::before {
  content: "tokens / input";
}

.space-panel[data-panel="blog"]::before {
  content: "attention / heads";
}

.space-panel[data-panel="notes"]::before {
  content: "latent / notes";
}

.space-panel[data-panel="contact"]::before {
  content: "output / logits";
}

.space-panel-inner {
  width: 100%;
  position: relative;
  z-index: 1;
}

.home-panel-inner {
  flex: 1;
}

body[data-spa="true"] main {
  transform: none;
}

body[data-spa="true"].is-route-leaving main,
body[data-spa="true"].is-route-entering main,
body[data-spa="true"].is-route-leaving .footer {
  opacity: 1;
  filter: none;
}

body.is-route-entering main {
  opacity: 0;
  filter: blur(10px);
}

body.is-route-entered main {
  --route-x: 0px;
  opacity: 1;
  filter: blur(0);
}

body.is-route-leaving main,
body.is-route-leaving .footer {
  opacity: 0.88;
  filter: blur(0);
}

.route-curtain {
  position: fixed;
  left: 0;
  right: 0;
  bottom: clamp(18px, 4vw, 44px);
  z-index: 82;
  width: min(680px, calc(100% - 32px));
  min-height: 70px;
  margin: 0 auto;
  padding: 12px 14px;
  pointer-events: none;
  border: 1px solid var(--hairline);
  border-radius: 18px;
  background: color-mix(in srgb, var(--glass-strong) 76%, transparent);
  box-shadow: var(--mini-shadow), inset 0 1px 0 color-mix(in srgb, var(--glass-edge) 70%, transparent);
  backdrop-filter: blur(22px) saturate(1.35);
  -webkit-backdrop-filter: blur(22px) saturate(1.35);
  opacity: 0;
  transform: translate3d(0, 18px, 0) scale(0.96);
}

.route-curtain::before {
  content: "";
  position: absolute;
  left: 44px;
  right: 44px;
  top: 30px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--tensor), var(--activation), var(--latent), var(--loss));
  opacity: 0.38;
}

.route-node {
  position: relative;
  z-index: 1;
  width: 25%;
  display: grid;
  justify-items: center;
  gap: 5px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0;
}

.route-node::before {
  content: "";
  width: 12px;
  height: 12px;
  border: 2px solid color-mix(in srgb, var(--ink) 18%, transparent);
  border-radius: 50%;
  background: var(--glass-strong);
  box-shadow: 0 0 0 7px color-mix(in srgb, var(--glass-soft) 82%, transparent);
}

.route-node.is-from,
.route-node.is-to {
  color: var(--ink);
}

.route-node.is-to::before {
  border-color: var(--tensor);
  background: color-mix(in srgb, var(--tensor) 22%, white);
  box-shadow:
    0 0 0 8px color-mix(in srgb, var(--tensor) 14%, transparent),
    0 0 24px color-mix(in srgb, var(--tensor) 36%, transparent);
}

.route-curtain-inner {
  position: relative;
  display: flex;
  align-items: start;
  justify-content: space-between;
}

.route-progress {
  position: absolute;
  z-index: 0;
  left: var(--route-left, 12.5%);
  top: 29px;
  width: var(--route-width, 25%);
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--tensor), var(--activation), var(--latent), var(--loss));
  box-shadow: 0 0 24px color-mix(in srgb, var(--tensor) 30%, transparent);
  transform-origin: left;
  animation: route-progress 900ms cubic-bezier(.18,.86,.24,1) forwards;
}

body.is-route-leaving .route-curtain {
  animation: route-track-in 5200ms cubic-bezier(.18,.86,.24,1) forwards;
}

body.is-route-leaving.route-back .route-curtain {
  animation-name: route-track-in;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 20px;
  min-height: 76px;
  padding: 14px clamp(18px, 4vw, 52px);
  border-bottom: 1px solid var(--hairline);
  background: color-mix(in srgb, var(--glass-strong) 72%, transparent);
  backdrop-filter: blur(22px) saturate(1.16);
  -webkit-backdrop-filter: blur(22px) saturate(1.16);
  transition: box-shadow 220ms ease, border-color 220ms ease;
}

.site-header::after {
  content: "";
  position: absolute;
  left: clamp(18px, 4vw, 52px);
  right: clamp(18px, 4vw, 52px);
  bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--blue), var(--green), transparent);
  opacity: 0.52;
  transform: scaleX(0.42);
  transform-origin: left;
  animation: rail-scan 7s var(--motion-ease) infinite;
}

.site-header.is-scrolled {
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.08);
}

.brand,
.nav,
.site-actions,
.portal-button,
.footer {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 760;
}

.brand-mark {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: 1px solid var(--hairline);
  border-radius: 8px;
  background: linear-gradient(145deg, var(--glass-strong), var(--glass-soft));
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.8);
  color: var(--blue);
  font-weight: 900;
}

.nav {
  justify-content: center;
  gap: 8px;
}

.nav a,
.glass-control,
.modal-action,
.inline-link {
  position: relative;
  border: 1px solid transparent;
  border-radius: 14px;
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 650;
  transition: color 180ms ease, background 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.nav a {
  padding: 8px 13px;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--ink);
  background: color-mix(in srgb, var(--glass-soft) 68%, transparent);
  border-color: var(--hairline);
}

.site-actions {
  justify-content: flex-end;
  gap: 8px;
}

.glass-control {
  min-width: 44px;
  height: 40px;
  display: grid;
  place-items: center;
  padding: 0 12px;
  background: var(--glass);
  border-color: var(--hairline);
  border-radius: 16px;
  color: var(--ink);
  backdrop-filter: blur(18px);
}

.theme-icon {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--ink);
  box-shadow: inset -6px -4px 0 var(--glass-strong);
}

:root[data-theme="dark"] .theme-icon {
  box-shadow: inset 6px 0 0 var(--glass-strong);
}

.interactive {
  position: relative;
  overflow: hidden;
  transform: translateZ(0);
}

.interactive::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  background:
    linear-gradient(115deg, transparent 0 22%, color-mix(in srgb, var(--glass-edge) 58%, transparent) 46%, transparent 70%),
    radial-gradient(circle at var(--px, 50%) var(--py, 50%), color-mix(in srgb, var(--blue) 12%, transparent), transparent 32%);
  transition: opacity 180ms ease;
}

.interactive:hover::before {
  opacity: 1;
}

.interactive:active {
  transform: translateY(1px) scale(0.988);
}

.click-ripple {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  pointer-events: none;
  background: color-mix(in srgb, var(--blue) 38%, transparent);
  transform: translate(-50%, -50%) scale(0);
  animation: ripple 520ms ease-out forwards;
}

@keyframes ripple {
  to {
    opacity: 0;
    transform: translate(-50%, -50%) scale(22);
  }
}

.glass-panel,
.intro-glass,
.preview-card,
.archive-item,
.note-card,
.contact-card,
.article,
.not-found {
  border: 1px solid color-mix(in srgb, var(--blue) 13%, var(--hairline));
  background:
    radial-gradient(circle at 8% 0%, color-mix(in srgb, var(--tensor) 9%, transparent) 0 18%, transparent 42%),
    radial-gradient(circle at 96% 100%, color-mix(in srgb, var(--activation) 8%, transparent) 0 16%, transparent 44%),
    linear-gradient(145deg,
      color-mix(in srgb, var(--glass-window-strong) 94%, var(--tensor) 6%),
      color-mix(in srgb, var(--glass-window) 92%, var(--activation) 8%)),
    repeating-linear-gradient(90deg, transparent 0 22px, color-mix(in srgb, var(--ink) 2.6%, transparent) 23px 24px),
    repeating-linear-gradient(0deg, transparent 0 22px, color-mix(in srgb, var(--ink) 2%, transparent) 23px 24px);
  box-shadow:
    0 1px 0 color-mix(in srgb, var(--glass-edge) 78%, transparent) inset,
    0 -1px 0 color-mix(in srgb, var(--ink) 5%, transparent) inset,
    0 18px 44px color-mix(in srgb, var(--blue) 8%, transparent),
    var(--shadow);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.intro-glass,
.preview-card,
.archive-item,
.note-card,
.contact-card,
.article,
.quick-panel,
.empty-state,
.not-found {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.intro-glass::after,
.preview-card::after,
.archive-item::after,
.note-card::after,
.contact-card::after,
.article::after,
.quick-panel::after,
.empty-state::after,
.not-found::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  border-radius: inherit;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--glass-edge) 34%, transparent), transparent 18% 72%, color-mix(in srgb, var(--ink) 4%, transparent)),
    linear-gradient(90deg, color-mix(in srgb, var(--tensor) 8%, transparent), transparent 32% 68%, color-mix(in srgb, var(--loss) 5%, transparent)),
    repeating-linear-gradient(135deg, transparent 0 58px, color-mix(in srgb, var(--activation) 4%, transparent) 59px 60px, transparent 61px 118px);
  opacity: 0.76;
  mix-blend-mode: normal;
}

:root[data-theme="dark"] .intro-glass::after,
:root[data-theme="dark"] .preview-card::after,
:root[data-theme="dark"] .archive-item::after,
:root[data-theme="dark"] .note-card::after,
:root[data-theme="dark"] .contact-card::after,
:root[data-theme="dark"] .article::after,
:root[data-theme="dark"] .quick-panel::after,
:root[data-theme="dark"] .empty-state::after,
:root[data-theme="dark"] .not-found::after {
  mix-blend-mode: normal;
  opacity: 0.48;
}

.intro-glass > :not(.click-ripple),
.preview-card > :not(.click-ripple),
.archive-item > :not(.click-ripple),
.note-card > :not(.click-ripple),
.contact-card > :not(.click-ripple),
.article > :not(.click-ripple),
.quick-panel > :not(.click-ripple),
.empty-state > :not(.click-ripple),
.not-found > :not(.click-ripple) {
  position: relative;
  z-index: 1;
}

.intro-glass::before,
.quick-panel::before,
.archive-item::before,
.contact-card::before,
.empty-state::before {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  top: 0;
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--tensor), var(--activation), var(--latent), var(--loss));
  opacity: 0.62;
  filter: blur(0.2px);
}

.reveal-on-scroll {
  opacity: 0;
  filter: blur(8px);
  transform: translate3d(0, 24px, 0) scale(0.985);
  transition:
    opacity 620ms var(--motion-spring) var(--reveal-delay, 0ms),
    filter 620ms var(--motion-spring) var(--reveal-delay, 0ms),
    transform 620ms var(--motion-spring) var(--reveal-delay, 0ms),
    border-color 180ms ease,
    background 180ms ease,
    box-shadow 180ms ease;
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  filter: blur(0);
  transform: translate3d(0, 0, 0) scale(1);
}

.hero-stage {
  position: relative;
  width: min(1180px, calc(100% - 32px));
  min-height: min(720px, calc(100vh - 76px));
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  align-items: center;
  gap: 24px;
  margin: 0 auto;
  padding: clamp(30px, 6vw, 78px) 0 clamp(14px, 4vw, 42px);
}

.geo-scene {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.geo-ring {
  position: absolute;
  border: 1px solid color-mix(in srgb, var(--ink) 12%, transparent);
  border-radius: 28px;
  opacity: 0.38;
  animation: none;
}

.ring-one {
  width: min(44vw, 520px);
  height: min(24vw, 280px);
  right: 6%;
  top: 14%;
  box-shadow:
    0 0 0 28px transparent,
    0 0 0 29px color-mix(in srgb, var(--ink) 6%, transparent),
    0 0 0 70px transparent,
    0 0 0 71px color-mix(in srgb, var(--ink) 5%, transparent);
}

.ring-two {
  width: 280px;
  height: 140px;
  left: -120px;
  bottom: 8%;
}

.geo-panel,
.geo-axis {
  position: absolute;
  border: 1px solid color-mix(in srgb, var(--ink) 12%, transparent);
}

.geo-panel {
  border-radius: 14px;
  background: color-mix(in srgb, var(--glass-soft) 80%, transparent);
  backdrop-filter: blur(18px);
}

.panel-one {
  width: 210px;
  height: 132px;
  right: 18%;
  top: 29%;
  animation: none;
}

.panel-two {
  width: 260px;
  height: 152px;
  right: 9%;
  top: 46%;
  animation: none;
}

.axis-one,
.axis-two {
  background: color-mix(in srgb, var(--blue) 42%, transparent);
}

.axis-one {
  width: 1px;
  height: 66%;
  right: 31%;
  top: 12%;
}

.axis-two {
  width: 52%;
  height: 1px;
  right: 5%;
  top: 46%;
}

@keyframes drift {
  0%,
  100% {
    transform: translate3d(0, 0, 0);
  }
  50% {
    transform: translate3d(10px, -12px, 0);
  }
}

.intro-glass {
  max-width: 770px;
  padding: clamp(28px, 5vw, 58px);
  border-radius: var(--radius);
  container-type: inline-size;
  transform-style: preserve-3d;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.intro-glass > h1::before {
  content: "neural workspace";
  display: block;
  width: fit-content;
  margin: 0 0 12px;
  padding: 3px 9px;
  border: 1px solid color-mix(in srgb, var(--tensor) 28%, var(--hairline));
  border-radius: 999px;
  background: color-mix(in srgb, var(--tensor) 7%, transparent);
  color: var(--tensor);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.72rem;
  font-weight: 800;
  line-height: 1.2;
}

.quick-panel::before {
  content: "run config";
  position: static;
  width: fit-content;
  height: auto;
  display: block;
  padding: 3px 9px;
  border: 1px solid color-mix(in srgb, var(--activation) 30%, var(--hairline));
  border-radius: 999px;
  background: color-mix(in srgb, var(--activation) 8%, transparent);
  color: var(--activation);
  font-size: 0.72rem;
  font-weight: 800;
}

.kicker {
  margin: 0 0 16px;
  color: var(--blue);
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.intro-glass h1 {
  margin: 0 0 8px;
  max-width: 100%;
  font-size: clamp(2.2rem, 4vw, 3.55rem);
  font-size: clamp(2.2rem, 7.4cqw, 3.55rem);
  line-height: 1.06;
  letter-spacing: 0;
  white-space: normal;
  text-wrap: balance;
  overflow-wrap: break-word;
  hyphens: auto;
}

.school-name {
  margin: 0;
  color: color-mix(in srgb, var(--ink) 76%, var(--muted));
  font-size: clamp(1.16rem, 1.85vw, 1.62rem);
  font-weight: 500;
  line-height: 1.35;
}

.identity-rule {
  width: 34px;
  height: 2px;
  display: block;
  margin: 10px 0 16px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--tensor) 0 34%, var(--activation) 34% 68%, var(--loss) 68% 100%);
}

.study-line {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 0.96rem;
  font-weight: 560;
  line-height: 1.35;
}

.intro-copy,
.subpage-hero p,
.archive-item p,
.note-card p,
.preview-card p,
.article-header p {
  color: var(--muted);
}

.intro-copy {
  max-width: 560px;
  margin-bottom: 28px;
  font-size: 1.08rem;
  line-height: 1.82;
}

.portal-actions {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.portal-actions::before {
  content: "pipeline: input -> encoder -> output";
  position: absolute;
  left: 2px;
  top: -25px;
  color: color-mix(in srgb, var(--muted) 78%, transparent);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.72rem;
  font-weight: 700;
  white-space: nowrap;
}

.portal-button {
  min-height: 100px;
  justify-content: space-between;
  gap: 14px;
  padding: 18px;
  border: 1px solid var(--hairline);
  border-radius: 16px;
  background: var(--glass-soft);
  box-shadow: inset 0 1px 0 color-mix(in srgb, var(--glass-edge) 68%, transparent);
  transition: border-color 180ms ease, transform 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.portal-button > span:not(.portal-icon),
.contact-card > span:not(.contact-symbol) {
  min-width: 0;
}

.portal-button:hover {
  border-color: color-mix(in srgb, var(--tensor) 50%, var(--hairline));
  background: var(--glass);
  transform: translateY(-4px);
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, var(--glass-edge) 82%, transparent),
    0 16px 36px color-mix(in srgb, var(--tensor) 14%, transparent);
}

.portal-button strong,
.contact-card strong {
  display: block;
  font-weight: 800;
  overflow-wrap: anywhere;
}

.portal-button small,
.contact-card small {
  display: block;
  color: var(--muted);
  font-size: 0.86rem;
  overflow-wrap: anywhere;
}

.portal-button svg,
.modal-close svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: 0 0 auto;
}

.portal-icon,
.contact-symbol {
  position: relative;
  width: 42px;
  height: 42px;
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid var(--hairline);
  border-radius: 13px;
  background: var(--glass-strong);
  box-shadow: inset 0 1px 0 color-mix(in srgb, var(--glass-edge) 76%, transparent);
  transition: transform 220ms var(--motion-spring), border-color 180ms ease, background 180ms ease;
}

.portal-button:hover .portal-icon,
.contact-card:hover .contact-symbol {
  transform: translateY(-2px) rotate(-3deg) scale(1.04);
  border-color: color-mix(in srgb, var(--tensor) 38%, var(--hairline));
}

.document-icon::before,
.notes-icon::before,
.contact-icon::before,
.mail-symbol::before,
.phone-symbol::before {
  content: "";
  width: 18px;
  height: 18px;
  border: 2px solid currentColor;
}

.document-icon,
.mail-symbol {
  color: var(--tensor);
}

.document-icon::before {
  border-radius: 3px;
  box-shadow: inset 0 5px 0 transparent, inset 0 -5px 0 transparent;
}

.notes-icon {
  color: var(--activation);
}

.notes-icon::before {
  border-radius: 50% 50% 45% 45%;
  border-top-color: transparent;
}

.contact-icon,
.phone-symbol {
  color: var(--loss);
}

.contact-icon::before {
  border-radius: 50%;
  border-bottom-color: transparent;
}

.mail-symbol::before {
  width: 20px;
  height: 14px;
  border-radius: 3px;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
}

.phone-symbol::before {
  width: 13px;
  height: 20px;
  border-radius: 5px;
}

.discord-symbol {
  color: var(--green);
  font-weight: 900;
}

.bilibili-symbol {
  color: var(--coral);
  font-weight: 900;
}

.quick-panel {
  display: grid;
  gap: 10px;
  padding: 18px;
  border-radius: 16px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.quick-row {
  min-width: 0;
  padding: 15px;
  border: 1px solid color-mix(in srgb, var(--blue) 10%, var(--hairline));
  border-radius: 12px;
  background:
    linear-gradient(145deg,
      color-mix(in srgb, var(--glass-window-strong) 88%, var(--tensor) 4%),
      color-mix(in srgb, var(--glass-window) 92%, var(--activation) 3%));
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, var(--glass-edge) 66%, transparent),
    0 8px 18px color-mix(in srgb, var(--ink) 4%, transparent);
}

.quick-row span {
  display: block;
  color: var(--muted);
  font-size: 0.86rem;
  text-transform: lowercase;
}

.quick-row strong {
  display: block;
  margin-top: 4px;
  overflow-wrap: anywhere;
}

.preview-strip {
  width: min(1180px, calc(100% - 32px));
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: -14px auto 86px;
}

.preview-card {
  min-height: 132px;
  padding: 18px 20px;
  border-radius: 20px;
  box-shadow: var(--mini-shadow);
  transition: transform 220ms var(--motion-spring), border-color 180ms ease, box-shadow 180ms ease;
}

.preview-card::before {
  content: "";
  position: absolute;
  left: 20px;
  right: 20px;
  top: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--blue), var(--green), var(--coral));
  opacity: 0.46;
}

.preview-card:hover,
.archive-item:hover,
.note-card:hover,
.contact-card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--tensor) 44%, var(--hairline));
  box-shadow:
    0 1px 0 color-mix(in srgb, var(--glass-edge) 82%, transparent) inset,
    var(--shadow),
    0 0 0 1px color-mix(in srgb, var(--glass-edge) 42%, transparent),
    0 16px 42px color-mix(in srgb, var(--tensor) 11%, transparent);
}

.status-dot {
  width: 8px;
  height: 8px;
  display: inline-block;
  border-radius: 50%;
  margin-bottom: 14px;
  box-shadow: 0 0 0 6px color-mix(in srgb, currentColor 12%, transparent);
}

.blue {
  background: var(--blue);
}

.green {
  background: var(--green);
}

.coral {
  background: var(--coral);
}

.preview-card h2,
.archive-item h2,
.note-card h2 {
  margin-bottom: 10px;
  font-size: clamp(1.35rem, 2.3vw, 2rem);
  line-height: 1.12;
  overflow-wrap: anywhere;
}

.preview-card p,
.archive-item p,
.note-card p {
  margin-bottom: 0;
  line-height: 1.72;
  overflow-wrap: anywhere;
}

.subpage-shell,
.article-main {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
  padding: 60px 0 92px;
}

.subpage-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 300px);
  align-items: center;
  gap: clamp(28px, 5vw, 72px);
  min-height: 315px;
  position: relative;
  overflow: hidden;
  padding: clamp(30px, 5vw, 56px);
  border-radius: var(--radius);
  border: 1px solid color-mix(in srgb, var(--blue) 13%, var(--hairline));
  background:
    radial-gradient(circle at 12% 0%, color-mix(in srgb, var(--tensor) 8%, transparent) 0 18%, transparent 42%),
    linear-gradient(145deg,
      color-mix(in srgb, var(--glass-window-strong) 94%, var(--tensor) 5%),
      color-mix(in srgb, var(--glass-window) 92%, var(--latent) 5%)),
    repeating-linear-gradient(90deg, transparent 0 22px, color-mix(in srgb, var(--ink) 2.4%, transparent) 23px 24px);
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, var(--glass-edge) 76%, transparent),
    var(--shadow);
}

.subpage-hero::after {
  content: none;
}

.subpage-hero h1,
.article-header h1 {
  max-width: 840px;
  margin: 0 0 18px;
  font-size: clamp(2.8rem, 6.4vw, 5.6rem);
  line-height: 0.98;
}

.subpage-hero p,
.article-header p {
  max-width: 690px;
  font-size: 1.08rem;
  line-height: 1.78;
}

.subpage-hero-copy,
[data-panel="notes"] .subpage-hero > div,
[data-panel="contact"] .subpage-hero > div {
  position: relative;
  z-index: 1;
  min-width: 0;
}

.hero-ai-graphic {
  position: relative;
  z-index: 0;
  display: block;
  justify-self: end;
  width: min(100%, 176px);
  height: 176px;
  overflow: visible;
  fill: none;
  stroke: color-mix(in srgb, var(--tensor) 48%, var(--muted));
  stroke-width: 1.35;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: .72;
}

.hero-ai-notes { stroke: color-mix(in srgb, var(--activation) 50%, var(--muted)); }
.hero-ai-contact { stroke: color-mix(in srgb, var(--loss) 50%, var(--muted)); }

.archive-shell {
  display: grid;
  grid-template-columns: 236px minmax(0, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.topic-panel {
  position: sticky;
  top: 98px;
  display: grid;
  gap: 9px;
  align-self: start;
  padding: 18px;
  border-radius: 16px;
  box-shadow: var(--mini-shadow);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.topic-panel::before {
  content: "run index";
  width: fit-content;
  height: auto;
  display: block;
  padding: 2px 8px;
  border: 1px solid color-mix(in srgb, var(--tensor) 28%, var(--hairline));
  border-radius: 999px;
  background: color-mix(in srgb, var(--tensor) 8%, transparent);
  color: var(--tensor);
  font-size: 0.72rem;
  font-weight: 800;
}

.topic-panel h2 {
  margin: 0 0 4px;
  font-size: 1rem;
}

.topic-panel a,
.topic-panel button {
  width: 100%;
  text-align: left;
  background: transparent;
  color: var(--muted);
  padding: 8px 10px;
  border-radius: 999px;
  font: inherit;
}

.topic-panel a:hover,
.topic-panel button:hover,
.topic-panel button.is-copied {
  color: var(--ink);
  background: var(--glass-soft);
  box-shadow: inset 0 1px 0 color-mix(in srgb, var(--glass-edge) 56%, transparent);
}

.archive-list,
.notes-grid,
.contact-grid {
  display: grid;
  gap: 18px;
}

.empty-state {
  min-height: 260px;
  display: grid;
  align-content: center;
  gap: 14px;
  padding: clamp(26px, 5vw, 46px);
  border-radius: 16px;
}

.empty-state h2 {
  margin: 0;
  font-size: clamp(1.55rem, 3vw, 2.45rem);
  line-height: 1.12;
}

.empty-state p {
  max-width: 640px;
  margin: 0;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.78;
  overflow-wrap: anywhere;
}

.notes-grid .empty-state {
  grid-column: 1 / -1;
}

.archive-list .empty-state {
  min-height: auto;
  align-content: start;
  gap: 12px;
  padding: 24px;
}

.archive-item,
.note-card,
.contact-card {
  border-radius: 16px;
  transition: transform 220ms var(--motion-spring), border-color 180ms ease, box-shadow 180ms ease;
}

.archive-item a {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px 18px;
  padding: 24px;
}

.archive-item .tag {
  grid-column: 1;
  grid-row: 1;
}

.archive-item time {
  grid-column: 2;
  grid-row: 1;
  align-self: center;
  justify-self: end;
  white-space: nowrap;
}

.archive-item h2,
.archive-item p {
  grid-column: 1 / -1;
}

.tag {
  width: fit-content;
  display: inline-flex;
  align-items: center;
  min-height: 27px;
  padding: 0 10px;
  border-radius: 999px;
  color: #fff;
  font-size: 0.76rem;
  font-weight: 850;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.42),
    0 8px 18px color-mix(in srgb, currentColor 22%, transparent);
}

time {
  color: var(--muted);
  font-size: 0.9rem;
}

.notes-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 18px;
}

.note-card {
  padding: 24px;
}

.note-number {
  color: var(--blue);
  font-size: 0.9rem;
  font-weight: 900;
}

.inline-link {
  width: fit-content;
  display: inline-flex;
  margin-top: 22px;
  padding: 8px 12px;
  background: var(--glass-soft);
  border-color: var(--hairline);
  color: var(--ink);
}

.contact-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 18px;
}

.contact-card {
  min-height: 118px;
  display: flex;
  align-items: center;
  gap: 16px;
  width: 100%;
  padding: 22px;
  text-align: left;
}

a.contact-card {
  color: inherit;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: grid;
  place-items: center;
  padding: 20px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 220ms ease;
}

.modal[hidden] {
  display: none;
}

.modal.is-open {
  pointer-events: auto;
  opacity: 1;
}

.modal-scrim {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.24);
  backdrop-filter: blur(16px);
}

.modal-panel {
  position: relative;
  width: min(520px, 100%);
  padding: 34px;
  border-radius: 28px;
  text-align: center;
  transform: translateY(14px) scale(0.97);
  box-shadow:
    var(--shadow),
    inset 0 1px 0 color-mix(in srgb, var(--glass-edge) 68%, transparent);
  transition: transform 240ms var(--motion-spring);
}

.modal.is-open .modal-panel {
  transform: translateY(0) scale(1);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--hairline);
  background: var(--glass-soft);
  color: var(--ink);
}

.modal-symbol {
  width: 62px;
  height: 62px;
  display: grid;
  place-items: center;
  margin: 6px auto 18px;
  border: 1px solid var(--hairline);
  border-radius: 19px;
  background: var(--glass-strong);
}

.modal-symbol::before {
  content: "";
  width: 28px;
  height: 20px;
  border: 2px solid var(--blue);
  border-radius: 5px;
}

.modal-symbol[data-kind="phone"]::before {
  width: 18px;
  height: 30px;
  border-color: var(--coral);
  border-radius: 7px;
}

.modal-panel h2 {
  margin: 0 0 10px;
  font-size: 1.7rem;
}

.modal-value {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 1.08rem;
  overflow-wrap: anywhere;
}

.modal-actions {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

.modal-action {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 15px;
  background: var(--glass-soft);
  border-color: var(--hairline);
  color: var(--ink);
}

.modal-row {
  display: grid;
  grid-template-columns: minmax(64px, 80px) minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--hairline);
  border-radius: 16px;
  background: var(--glass-soft);
  text-align: left;
}

.modal-row + .modal-row {
  margin-top: 10px;
}

.modal-row span {
  color: var(--muted);
}

.modal-row strong {
  overflow-wrap: anywhere;
}

.article-main {
  max-width: 880px;
}

.article {
  padding: clamp(26px, 5vw, 52px);
  border-radius: var(--radius);
}

.back-link {
  display: inline-flex;
  margin-bottom: 26px;
  color: var(--muted);
  font-weight: 750;
}

.article-header {
  margin-bottom: 30px;
}

.article-body {
  max-width: 720px;
}

.article-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 16px;
}

.repo-link {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 14px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  background: var(--glass-soft);
  color: var(--ink);
  font-size: 0.94rem;
  font-weight: 780;
}

.article-title-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  max-width: 900px;
}

.article-title-row h1 {
  flex: 1 1 auto;
  min-width: 0;
  margin: 0;
}

.article-github-button {
  flex: 0 0 auto;
  gap: 8px;
  margin-top: 0.42rem;
  border-color: color-mix(in srgb, var(--tensor) 38%, var(--hairline));
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--glass-strong) 82%, transparent), color-mix(in srgb, var(--glass-soft) 76%, transparent));
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, #fff 46%, transparent),
    0 12px 26px color-mix(in srgb, var(--tensor) 10%, transparent);
  text-decoration: none;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.article-github-button:hover {
  border-color: color-mix(in srgb, var(--blue) 58%, var(--hairline));
  transform: translateY(-1px);
}

.article-github-icon {
  width: 16px;
  height: 16px;
  background: currentColor;
  -webkit-mask: url("assets/icons/github.svg") center / contain no-repeat;
  mask: url("assets/icons/github.svg") center / contain no-repeat;
}

.app-shot {
  margin: 28px 0 34px;
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid var(--hairline);
  border-radius: 22px;
  background: color-mix(in srgb, var(--glass-strong) 76%, transparent);
  box-shadow: var(--mini-shadow);
}

.app-shot-top,
.app-shot-grid,
.fake-actions {
  display: flex;
}

.app-shot-top {
  align-items: center;
  gap: 9px;
  margin-bottom: 22px;
}

.app-shot-top small {
  margin-left: auto;
  color: var(--muted);
  font-weight: 700;
}

.app-dot {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  background: linear-gradient(135deg, var(--green), var(--blue));
}

.app-shot-title h2 {
  margin: 0 0 4px;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1;
}

.app-shot-title p,
.app-shot-grid span,
.fake-check {
  color: var(--muted);
}

.app-shot-grid {
  gap: 14px;
  margin-top: 20px;
}

.app-shot-grid section {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--hairline);
  border-radius: 14px;
  background: color-mix(in srgb, var(--glass) 56%, transparent);
}

.app-shot-grid section:first-child {
  flex: 0 0 34%;
}

.app-shot-grid section:last-child {
  flex: 1;
}

.app-shot-grid h3 {
  margin: 0 0 16px;
  font-size: 1rem;
}

.fake-input,
.fake-button,
.fake-log,
.fake-actions span {
  border: 1px solid var(--hairline);
  border-radius: 8px;
  background: var(--glass-strong);
}

.fake-input {
  margin: 6px 0 14px;
  padding: 9px 10px;
  color: var(--ink);
  font-size: 0.88rem;
  overflow-wrap: anywhere;
}

.fake-button {
  margin: 4px 0 14px;
  padding: 11px;
  background: color-mix(in srgb, var(--green) 72%, var(--blue));
  color: #fff;
  text-align: center;
  font-weight: 850;
}

.fake-check {
  margin-top: 10px;
  font-size: 0.9rem;
}

.fake-log {
  min-height: 214px;
  padding: 16px;
  color: color-mix(in srgb, var(--ink) 84%, var(--muted));
}

.fake-actions {
  justify-content: space-between;
  gap: 12px;
  margin-top: 14px;
}

.fake-actions span {
  padding: 9px 14px;
  color: var(--ink);
  font-size: 0.88rem;
}

.concept-flow {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 28px 0 34px;
  padding: clamp(16px, 3vw, 24px);
  border: 1px solid var(--hairline);
  border-radius: 22px;
  background:
    radial-gradient(circle at 18% 20%, color-mix(in srgb, var(--blue) 18%, transparent), transparent 30%),
    radial-gradient(circle at 84% 72%, color-mix(in srgb, var(--coral) 16%, transparent), transparent 34%),
    color-mix(in srgb, var(--glass-strong) 76%, transparent);
  box-shadow: var(--mini-shadow);
}

.concept-flow span {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 13px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  background: var(--glass-soft);
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 820;
  overflow-wrap: anywhere;
}

.article-body h2 {
  margin: 34px 0 10px;
  font-size: clamp(1.45rem, 3vw, 2.2rem);
}

.article-body p {
  color: color-mix(in srgb, var(--ink) 76%, var(--muted));
  font-size: 1.08rem;
  line-height: 1.88;
}

.article-body ul {
  display: grid;
  gap: 10px;
  margin: 12px 0 24px;
  padding-left: 1.2rem;
  color: color-mix(in srgb, var(--ink) 76%, var(--muted));
  font-size: 1.05rem;
  line-height: 1.72;
}

.article-body pre {
  max-width: 100%;
  margin: 18px 0 28px;
  padding: 16px;
  overflow-x: auto;
  border: 1px solid var(--hairline);
  border-radius: 14px;
  background: color-mix(in srgb, var(--glass-strong) 78%, transparent);
  color: var(--ink);
}

.article-body code {
  border-radius: 6px;
  background: color-mix(in srgb, var(--glass-soft) 78%, transparent);
  padding: 0.12em 0.34em;
  font-size: 0.92em;
}

.article-body pre code {
  display: block;
  min-width: max-content;
  background: transparent;
  padding: 0;
  white-space: pre;
}

.not-found {
  min-height: 100vh;
  display: grid;
  place-content: center;
  gap: 18px;
  width: min(720px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px;
  text-align: center;
}

.not-found h1 {
  font-size: clamp(3rem, 8vw, 6rem);
}

.footer {
  justify-content: space-between;
  gap: 18px;
  padding: 30px clamp(18px, 4vw, 52px);
  border-top: 1px solid color-mix(in srgb, var(--blue) 18%, var(--hairline));
  color: var(--muted);
  background:
    repeating-linear-gradient(90deg, transparent 0 88px, color-mix(in srgb, var(--ink) 3%, transparent) 89px 90px),
    repeating-linear-gradient(0deg, transparent 0 88px, color-mix(in srgb, var(--ink) 2.5%, transparent) 89px 90px),
    linear-gradient(90deg, color-mix(in srgb, var(--tensor) 7%, var(--page)), color-mix(in srgb, var(--activation) 5%, var(--page)) 42%, color-mix(in srgb, var(--latent) 5%, var(--page)));
  box-shadow: inset 0 1px 0 color-mix(in srgb, var(--glass-edge) 62%, transparent);
  backdrop-filter: none;
}

@keyframes rail-scan {
  0%,
  100% {
    opacity: 0.18;
    transform: translateX(-18%) scaleX(0.24);
  }
  45% {
    opacity: 0.66;
    transform: translateX(18%) scaleX(0.72);
  }
}

@keyframes scene-breathe {
  0% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  100% {
    transform: translate3d(6px, -8px, 0) scale(1.015);
  }
}

@keyframes route-track-in {
  0% {
    opacity: 0;
    transform: translate3d(0, 18px, 0) scale(0.96);
  }
  7%,
  92% {
    opacity: 1;
    transform: translate3d(0, 0, 0) scale(1);
  }
  100% {
    opacity: 0;
    transform: translate3d(0, 10px, 0) scale(0.985);
  }
}

@keyframes route-progress {
  0% {
    transform: scaleX(0.06);
    opacity: 0.5;
  }
  100% {
    transform: scaleX(1);
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    scroll-behavior: auto !important;
    transition: none !important;
  }

  .cursor-dot,
  .cursor-ring,
  .cursor-glow,
  .route-curtain {
    display: none;
  }

  body.is-route-entering main,
  body.is-route-leaving main,
  body.is-route-leaving .footer {
    opacity: 1;
    filter: none;
    transform: none;
  }
}

@media (max-width: 960px) {
  .hero-stage,
  .archive-shell,
  .notes-grid {
    grid-template-columns: 1fr;
  }

  .quick-panel,
  .topic-panel {
    position: static;
  }

  .portal-actions,
  .preview-strip {
    grid-template-columns: 1fr;
  }

  .geo-scene {
    opacity: 0.65;
  }
}

@media (max-width: 680px) {
  body {
    --route-slide: 16px;
  }

  .site-header {
    grid-template-columns: 1fr auto;
    gap: 10px;
    min-height: 96px;
    padding: 12px 16px;
  }

  .nav {
    grid-column: 1 / -1;
    justify-content: flex-start;
    order: 3;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .hero-stage {
    width: min(100% - 24px, 1180px);
    min-height: auto;
    padding-top: 28px;
  }

  .space-panel::before {
    top: auto;
    right: 14px;
    bottom: 18px;
    font-size: 0.66rem;
    opacity: 0.78;
  }

  .intro-glass {
    padding: 24px;
    border-radius: 24px;
  }

  .intro-glass h1 {
    font-size: clamp(2.1rem, 8.8vw, 2.86rem);
    font-size: clamp(2.1rem, 12.4cqw, 2.86rem);
  }

  .school-name {
    font-size: 1.18rem;
  }

  .study-line {
    margin-bottom: 22px;
  }

  .portal-button {
    min-height: 92px;
  }

  .preview-strip,
  .subpage-shell,
  .article-main {
    width: min(100% - 24px, 1080px);
  }

  .subpage-shell,
  .article-main {
    padding-top: 34px;
  }

  .subpage-hero,
  .article {
    border-radius: 24px;
    padding: 24px;
  }

  .subpage-hero h1,
  .article-header h1 {
    font-size: clamp(2.45rem, 13vw, 4rem);
  }

  .app-shot-grid,
  .fake-actions {
    flex-direction: column;
  }

  .app-shot-grid section:first-child,
  .app-shot-grid section:last-child {
    flex-basis: auto;
  }

  .fake-log {
    min-height: 150px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .modal-row {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* Transformer blueprint redesign */
:root {
  --page: #eef6fa;
  --page-2: #dfeaf0;
  --ink: #101722;
  --muted: #607181;
  --hairline: rgba(44, 86, 112, 0.2);
  --glass: #e8f4f8;
  --glass-strong: #f4fbfd;
  --glass-soft: #dcecf2;
  --tensor: #178acb;
  --activation: #239b75;
  --loss: #d45b70;
  --latent: #596fd6;
  --blue: #178acb;
  --green: #239b75;
  --coral: #d45b70;
  --violet: #596fd6;
  --module-bg: #e8f4f8;
  --module-bg-2: #f5fbfd;
  --module-edge: rgba(23, 138, 203, 0.34);
  --module-shadow: 0 22px 58px rgba(31, 68, 94, 0.12);
  --radius: 14px;
}

:root[data-theme="dark"] {
  --page: #071018;
  --page-2: #0f1b25;
  --ink: #f4fbff;
  --muted: #9eb1bf;
  --hairline: rgba(141, 199, 232, 0.2);
  --glass: #101f2b;
  --glass-strong: #162938;
  --glass-soft: #0d1a24;
  --module-bg: #10202c;
  --module-bg-2: #172d3e;
  --module-edge: rgba(106, 190, 238, 0.34);
  --module-shadow: 0 22px 58px rgba(0, 0, 0, 0.34);
}

body {
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--ink) 4%, transparent) 1px, transparent 1px),
    linear-gradient(color-mix(in srgb, var(--ink) 4%, transparent) 1px, transparent 1px),
    linear-gradient(135deg, var(--page), var(--page-2));
  background-size: 24px 24px, 24px 24px, auto;
}

body::before {
  opacity: 1;
  background:
    linear-gradient(90deg,
      transparent 0 5.2%, color-mix(in srgb, var(--tensor) 42%, transparent) 5.25% 5.38%, transparent 5.45% 25%,
      transparent 25% 30.2%, color-mix(in srgb, var(--activation) 38%, transparent) 30.25% 30.38%, transparent 30.45% 50%,
      transparent 50% 55.2%, color-mix(in srgb, var(--latent) 38%, transparent) 55.25% 55.38%, transparent 55.45% 75%,
      transparent 75% 80.2%, color-mix(in srgb, var(--loss) 34%, transparent) 80.25% 80.38%, transparent 80.45% 100%),
    linear-gradient(90deg,
      color-mix(in srgb, var(--tensor) 9%, transparent) 0 25%,
      color-mix(in srgb, var(--activation) 7%, transparent) 25% 50%,
      color-mix(in srgb, var(--latent) 7%, transparent) 50% 75%,
      color-mix(in srgb, var(--loss) 6%, transparent) 75% 100%),
    repeating-linear-gradient(90deg, transparent 0 47px, color-mix(in srgb, var(--ink) 6%, transparent) 48px 49px, transparent 50px 96px),
    repeating-linear-gradient(0deg, transparent 0 47px, color-mix(in srgb, var(--ink) 5%, transparent) 48px 49px, transparent 50px 96px);
}

body::after {
  opacity: 0.95;
  background:
    linear-gradient(90deg,
      transparent 0 8%, color-mix(in srgb, var(--tensor) 36%, transparent) 8.05% 8.16%, transparent 8.26% 25%,
      transparent 25% 32%, color-mix(in srgb, var(--activation) 30%, transparent) 32.05% 32.16%, transparent 32.26% 50%,
      transparent 50% 58%, color-mix(in srgb, var(--latent) 28%, transparent) 58.05% 58.16%, transparent 58.26% 75%,
      transparent 75% 83%, color-mix(in srgb, var(--loss) 28%, transparent) 83.05% 83.16%, transparent 83.26% 100%),
    linear-gradient(28deg, transparent 0 18%, color-mix(in srgb, var(--tensor) 16%, transparent) 18.08% 18.2%, transparent 18.32% 45%, color-mix(in srgb, var(--activation) 12%, transparent) 45.08% 45.2%, transparent 45.32% 100%),
    linear-gradient(142deg, transparent 0 28%, color-mix(in srgb, var(--latent) 12%, transparent) 28.08% 28.2%, transparent 28.32% 62%, color-mix(in srgb, var(--loss) 10%, transparent) 62.08% 62.2%, transparent 62.32% 100%);
}

.space-panel {
  background:
    radial-gradient(circle at 12% 18%, color-mix(in srgb, var(--tensor) 11%, transparent), transparent 30%),
    radial-gradient(circle at 74% 62%, color-mix(in srgb, var(--activation) 8%, transparent), transparent 34%),
    repeating-linear-gradient(90deg, transparent 0 95px, color-mix(in srgb, var(--ink) 4%, transparent) 96px 97px),
    repeating-linear-gradient(0deg, transparent 0 95px, color-mix(in srgb, var(--ink) 3.4%, transparent) 96px 97px);
}

.space-panel::before {
  top: clamp(112px, 15vh, 160px);
  right: clamp(22px, 3vw, 44px);
  padding: 10px 8px;
  border-color: color-mix(in srgb, var(--tensor) 28%, var(--hairline));
  border-radius: 6px;
  background: var(--module-bg);
  color: color-mix(in srgb, var(--ink) 58%, transparent);
  box-shadow: inset 4px 0 0 color-mix(in srgb, var(--tensor) 62%, transparent);
}

.space-panel::after {
  opacity: 0.82;
  background:
    radial-gradient(circle at 16% 28%, color-mix(in srgb, var(--tensor) 68%, transparent) 0 3px, transparent 4px),
    radial-gradient(circle at 27% 45%, color-mix(in srgb, var(--tensor) 54%, transparent) 0 3px, transparent 4px),
    radial-gradient(circle at 39% 34%, color-mix(in srgb, var(--activation) 58%, transparent) 0 3px, transparent 4px),
    radial-gradient(circle at 52% 52%, color-mix(in srgb, var(--activation) 52%, transparent) 0 3px, transparent 4px),
    radial-gradient(circle at 65% 39%, color-mix(in srgb, var(--latent) 54%, transparent) 0 3px, transparent 4px),
    radial-gradient(circle at 78% 56%, color-mix(in srgb, var(--loss) 48%, transparent) 0 3px, transparent 4px),
    linear-gradient(22deg, transparent 0 27%, color-mix(in srgb, var(--tensor) 18%, transparent) 27.08% 27.2%, transparent 27.34% 100%),
    linear-gradient(152deg, transparent 0 34%, color-mix(in srgb, var(--activation) 15%, transparent) 34.08% 34.2%, transparent 34.34% 100%);
}

.model-backdrop {
  position: absolute;
  inset: 76px clamp(18px, 4vw, 56px) 0;
  z-index: 0;
  pointer-events: none;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  color: color-mix(in srgb, var(--tensor) 68%, var(--muted));
}

.model-backdrop::before,
.model-backdrop::after {
  content: "";
  position: absolute;
  left: 8%;
  right: 5%;
  top: 42%;
  height: 1px;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--tensor) 44%, transparent), color-mix(in srgb, var(--activation) 34%, transparent), transparent);
}

.model-backdrop::after {
  left: 20%;
  right: 18%;
  top: 63%;
  transform: rotate(-9deg);
  transform-origin: center;
  opacity: 0.56;
}

.model-backdrop span {
  position: absolute;
  display: grid;
  place-items: center;
  min-width: 108px;
  min-height: 48px;
  padding: 10px 12px;
  border: 1px solid color-mix(in srgb, var(--tensor) 20%, transparent);
  border-radius: 7px;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--module-bg) 52%, transparent), color-mix(in srgb, var(--page) 32%, transparent)),
    linear-gradient(90deg, color-mix(in srgb, var(--tensor) 16%, transparent) 1px, transparent 1px),
    linear-gradient(color-mix(in srgb, var(--tensor) 12%, transparent) 1px, transparent 1px);
  background-size: auto, 16px 16px, 16px 16px;
  box-shadow: inset 3px 0 0 color-mix(in srgb, var(--tensor) 44%, transparent);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  opacity: 0.76;
}

.model-backdrop span:nth-child(1) {
  left: 2%;
  top: 24%;
}

.model-backdrop span:nth-child(2) {
  left: 26%;
  top: 33%;
  color: color-mix(in srgb, var(--activation) 72%, var(--muted));
  box-shadow: inset 3px 0 0 color-mix(in srgb, var(--activation) 48%, transparent);
}

.model-backdrop span:nth-child(3) {
  right: 9%;
  top: 22%;
  width: 210px;
  height: 150px;
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--tensor) 16%, transparent) 1px, transparent 1px),
    linear-gradient(color-mix(in srgb, var(--tensor) 14%, transparent) 1px, transparent 1px),
    color-mix(in srgb, var(--module-bg) 40%, transparent);
  background-size: 18px 18px, 18px 18px, auto;
}

.model-backdrop span:nth-child(4) {
  left: 38%;
  bottom: 17%;
  color: color-mix(in srgb, var(--latent) 70%, var(--muted));
  box-shadow: inset 3px 0 0 color-mix(in srgb, var(--latent) 46%, transparent);
}

.model-backdrop span:nth-child(5) {
  right: 2%;
  bottom: 26%;
  color: color-mix(in srgb, var(--loss) 70%, var(--muted));
  box-shadow: inset 3px 0 0 color-mix(in srgb, var(--loss) 46%, transparent);
}

.site-header {
  border-bottom-color: color-mix(in srgb, var(--tensor) 24%, var(--hairline));
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--module-bg-2) 92%, transparent), color-mix(in srgb, var(--module-bg) 88%, transparent));
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.site-header::after {
  background: linear-gradient(90deg, transparent, var(--tensor), transparent);
  opacity: 0.38;
}

.brand-mark,
.glass-control,
.nav a {
  border-radius: 6px;
}

.nav a[aria-current="page"] {
  background: color-mix(in srgb, var(--tensor) 10%, var(--module-bg));
  box-shadow: inset 0 -2px 0 var(--tensor);
}

.glass-panel,
.intro-glass,
.preview-card,
.archive-item,
.note-card,
.contact-card,
.article,
.not-found,
.quick-panel,
.empty-state,
.subpage-hero,
.topic-panel {
  border: 1px solid var(--module-edge);
  border-radius: 10px;
  background:
    linear-gradient(135deg, var(--module-bg-2), var(--module-bg)),
    repeating-linear-gradient(90deg, transparent 0 23px, color-mix(in srgb, var(--ink) 3%, transparent) 24px 25px);
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, white 52%, transparent),
    inset 0 -1px 0 color-mix(in srgb, var(--ink) 7%, transparent),
    var(--module-shadow);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.intro-glass::after,
.archive-item::after,
.note-card::after,
.contact-card::after,
.article::after,
.quick-panel::after,
.empty-state::after,
.not-found::after,
.subpage-hero::after,
.topic-panel::after {
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--tensor) 8%, transparent), transparent 28% 72%, color-mix(in srgb, var(--activation) 6%, transparent)),
    repeating-linear-gradient(135deg, transparent 0 62px, color-mix(in srgb, var(--tensor) 7%, transparent) 63px 64px, transparent 65px 124px);
  opacity: 0.52;
}

.intro-glass::before,
.quick-panel::before,
.archive-item::before,
.contact-card::before,
.empty-state::before {
  left: 0;
  right: auto;
  top: 0;
  width: 5px;
  height: 100%;
  border-radius: 0;
  background: var(--tensor);
  opacity: 0.72;
}

.intro-glass > h1::before,
.quick-panel::before,
.topic-panel::before {
  border-radius: 4px;
  background: color-mix(in srgb, var(--tensor) 11%, var(--module-bg));
  color: var(--tensor);
  box-shadow: none;
}

.quick-panel::before {
  content: "run config";
  position: relative;
  left: auto;
  right: auto;
  top: auto;
  width: fit-content;
  height: auto;
  display: block;
  padding: 4px 8px;
  border: 1px solid color-mix(in srgb, var(--activation) 30%, var(--hairline));
  opacity: 1;
}

.hero-stage {
  grid-template-columns: minmax(0, 1fr) minmax(280px, 340px);
}

.geo-scene {
  inset: 0;
  opacity: 1;
}

.geo-ring {
  border-radius: 8px;
  border-color: color-mix(in srgb, var(--tensor) 18%, transparent);
}

.ring-one {
  right: 0;
  top: 10%;
  box-shadow: none;
}

.ring-two {
  left: auto;
  right: 13%;
  bottom: 12%;
  box-shadow: none;
}

.geo-panel {
  border-radius: 8px;
  background: color-mix(in srgb, var(--module-bg) 68%, transparent);
  backdrop-filter: none;
}

.geo-panel::before {
  content: "Q K V";
  position: absolute;
  left: 12px;
  top: 10px;
  color: color-mix(in srgb, var(--tensor) 70%, transparent);
  font: 800 0.72rem/1 "SFMono-Regular", Consolas, monospace;
}

.geo-panel::after {
  content: "";
  position: absolute;
  inset: 34px 12px 12px;
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--tensor) 34%, transparent) 1px, transparent 1px),
    linear-gradient(color-mix(in srgb, var(--tensor) 28%, transparent) 1px, transparent 1px);
  background-size: 18px 18px;
}

.axis-one,
.axis-two {
  background: color-mix(in srgb, var(--tensor) 52%, transparent);
}

.portal-actions::before {
  content: "token route: profile -> logs -> notes -> contact";
  color: color-mix(in srgb, var(--tensor) 76%, var(--muted));
}

.portal-button,
.quick-row,
.contact-card {
  border-radius: 8px;
  background: color-mix(in srgb, var(--module-bg-2) 74%, var(--module-bg));
  border-color: color-mix(in srgb, var(--tensor) 20%, var(--hairline));
  box-shadow: inset 0 1px 0 color-mix(in srgb, white 48%, transparent);
}

.portal-button:hover,
.archive-item:hover,
.note-card:hover,
.contact-card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--tensor) 54%, var(--hairline));
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, white 56%, transparent),
    0 18px 42px color-mix(in srgb, var(--tensor) 16%, transparent);
}

.portal-icon,
.contact-symbol {
  border-radius: 6px;
  background: color-mix(in srgb, var(--module-bg) 76%, var(--page));
}

.subpage-hero {
  min-height: 220px;
}

.subpage-hero::after {
  right: 28px;
  top: 28px;
  width: min(28vw, 260px);
  height: min(18vw, 170px);
  border-radius: 8px;
  border-color: color-mix(in srgb, var(--tensor) 18%, transparent);
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--tensor) 18%, transparent) 1px, transparent 1px),
    linear-gradient(color-mix(in srgb, var(--tensor) 14%, transparent) 1px, transparent 1px),
    color-mix(in srgb, var(--module-bg-2) 82%, transparent);
  background-size: 22px 22px, 22px 22px, auto;
  box-shadow: none;
}

.archive-shell {
  align-items: start;
}

.archive-item {
  padding-left: 18px;
}

.archive-item .tag {
  border-radius: 4px;
}

.route-curtain {
  width: min(620px, calc(100% - 32px));
  min-height: 48px;
  bottom: clamp(14px, 2.4vw, 26px);
  padding: 8px 12px;
  border-radius: 8px;
  border-color: color-mix(in srgb, var(--tensor) 32%, var(--hairline));
  background:
    linear-gradient(135deg, var(--module-bg-2), var(--module-bg)),
    repeating-linear-gradient(90deg, transparent 0 23px, color-mix(in srgb, var(--ink) 4%, transparent) 24px 25px);
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, white 58%, transparent),
    0 12px 34px color-mix(in srgb, var(--tensor) 12%, transparent);
  backdrop-filter: none;
}

.route-curtain::before {
  left: 36px;
  right: 36px;
  top: 22px;
  height: 2px;
  background: color-mix(in srgb, var(--tensor) 40%, transparent);
  opacity: 1;
}

.route-progress {
  top: 21px;
  height: 3px;
  background: var(--tensor);
  box-shadow: 0 0 18px color-mix(in srgb, var(--tensor) 30%, transparent);
}

.route-node {
  color: color-mix(in srgb, var(--muted) 88%, transparent);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.62rem;
  gap: 4px;
  text-transform: uppercase;
}

.route-node::before {
  width: 11px;
  height: 11px;
  border-radius: 4px;
  background: var(--module-bg-2);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--tensor) 7%, transparent);
}

.route-node.is-to::before {
  border-color: var(--tensor);
  background: color-mix(in srgb, var(--tensor) 16%, var(--module-bg));
}

.footer {
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--module-bg) 95%, var(--tensor) 5%), color-mix(in srgb, var(--module-bg) 92%, var(--activation) 4%)),
    repeating-linear-gradient(90deg, transparent 0 47px, color-mix(in srgb, var(--ink) 4%, transparent) 48px 49px);
  border-top-color: color-mix(in srgb, var(--tensor) 20%, var(--hairline));
  backdrop-filter: none;
}

@media (max-width: 960px) {
  .hero-stage {
    grid-template-columns: 1fr;
  }

  .space-panel::before {
    display: none;
  }

  .model-backdrop span:nth-child(3) {
    right: 2%;
    width: 160px;
    height: 112px;
  }
}

@media (max-width: 680px) {
  .glass-panel,
  .intro-glass,
  .archive-item,
  .note-card,
  .contact-card,
  .subpage-hero,
  .topic-panel {
    border-radius: 10px;
  }

  .subpage-hero::after {
    opacity: 0.32;
  }

  .route-curtain {
    min-height: 58px;
  }

  .route-node {
    font-size: 0.58rem;
  }

  .model-backdrop {
    inset: 118px 12px 0;
  }

  .model-backdrop span {
    min-width: 78px;
    min-height: 34px;
    padding: 7px;
    font-size: 0.56rem;
    opacity: 0.48;
  }

  .model-backdrop span:nth-child(2),
  .model-backdrop span:nth-child(4) {
    display: none;
  }

  .model-backdrop span:nth-child(3) {
    width: 118px;
    height: 86px;
  }

  .route-curtain {
    min-height: 66px;
  }
}

/* Blueprint v2: turn content into model modules instead of cards on a backdrop */
.hero-stage {
  align-items: stretch;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 348px);
}

.intro-glass {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-content: center;
  gap: 12px;
  max-width: 780px;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
  overflow: visible;
}

.intro-glass::before,
.intro-glass::after {
  display: none;
}

.intro-glass h1,
.intro-copy,
.portal-actions,
.quick-panel,
.subpage-hero,
.topic-panel,
.archive-item,
.empty-state,
.contact-card {
  position: relative;
}

.intro-glass h1 {
  margin: 0;
  padding: clamp(24px, 4vw, 40px) clamp(22px, 4vw, 42px);
  border: 1px solid var(--module-edge);
  border-radius: 10px;
  background:
    linear-gradient(135deg, var(--module-bg-2), var(--module-bg)),
    repeating-linear-gradient(90deg, transparent 0 23px, color-mix(in srgb, var(--ink) 2.8%, transparent) 24px 25px);
  box-shadow:
    inset 5px 0 0 var(--tensor),
    inset 0 1px 0 color-mix(in srgb, white 54%, transparent),
    var(--module-shadow);
}

.intro-glass > h1::before {
  content: "input module / identity";
  margin-bottom: 14px;
}

.school-name,
.study-line,
.identity-rule {
  position: static;
  z-index: auto;
  margin: 0;
  transform: none;
}

.school-name {
  width: 100%;
  padding: 16px 22px 6px;
  border: 1px solid color-mix(in srgb, var(--tensor) 22%, var(--hairline));
  border-bottom: 0;
  border-radius: 10px 10px 0 0;
  background: color-mix(in srgb, var(--module-bg-2) 78%, var(--module-bg));
  box-shadow: inset 5px 0 0 color-mix(in srgb, var(--tensor) 52%, transparent);
}

.identity-rule {
  width: auto;
  height: 1px;
  margin: 0;
  border-radius: 0;
  background: color-mix(in srgb, var(--tensor) 36%, var(--hairline));
}

.study-line {
  width: 100%;
  padding: 6px 22px 16px;
  border: 1px solid color-mix(in srgb, var(--tensor) 22%, var(--hairline));
  border-top: 0;
  border-radius: 0 0 10px 10px;
  background: color-mix(in srgb, var(--module-bg-2) 78%, var(--module-bg));
  box-shadow: inset 5px 0 0 color-mix(in srgb, var(--tensor) 52%, transparent);
}

.intro-copy {
  margin: 0;
  padding: 18px clamp(20px, 3vw, 28px);
  border: 1px solid color-mix(in srgb, var(--activation) 28%, var(--hairline));
  border-radius: 10px;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--module-bg-2) 92%, var(--activation) 4%), var(--module-bg));
  box-shadow: inset 5px 0 0 color-mix(in srgb, var(--activation) 78%, transparent);
}

.intro-copy::before {
  content: "context embedding";
  display: block;
  margin: 0 0 8px;
  color: var(--activation);
  font: 800 0.68rem/1.2 "SFMono-Regular", Consolas, monospace;
  text-transform: uppercase;
}

.portal-actions {
  margin-top: 22px;
  padding-top: 28px;
}

.portal-actions::after {
  content: "";
  position: absolute;
  left: 7%;
  right: 7%;
  top: 13px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--tensor), var(--activation), var(--loss), transparent);
}

.portal-button {
  border-radius: 8px;
  box-shadow:
    inset 4px 0 0 color-mix(in srgb, currentColor 58%, transparent),
    inset 0 1px 0 color-mix(in srgb, white 52%, transparent);
}

.quick-panel {
  align-self: center;
  min-height: 344px;
  border-radius: 10px;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--module-bg-2) 94%, var(--tensor) 3%), var(--module-bg)),
    repeating-linear-gradient(0deg, transparent 0 31px, color-mix(in srgb, var(--tensor) 5%, transparent) 32px 33px);
}

.quick-panel::after {
  content: "profile vector";
  position: absolute;
  right: 14px;
  bottom: 12px;
  z-index: 1;
  color: color-mix(in srgb, var(--tensor) 42%, transparent);
  font: 800 0.66rem/1 "SFMono-Regular", Consolas, monospace;
  text-transform: uppercase;
}

.quick-row {
  background: color-mix(in srgb, var(--module-bg-2) 82%, var(--module-bg));
}

.archive-list {
  position: relative;
  display: grid;
  gap: 18px;
}

.archive-list::before {
  content: "";
  position: absolute;
  left: -13px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--tensor), var(--activation), var(--latent));
  opacity: 0.58;
}

.archive-item {
  border-radius: 8px;
  box-shadow:
    inset 5px 0 0 var(--tensor),
    inset 0 1px 0 color-mix(in srgb, white 54%, transparent),
    var(--module-shadow);
}

.archive-item:nth-child(2) {
  box-shadow:
    inset 5px 0 0 var(--activation),
    inset 0 1px 0 color-mix(in srgb, white 54%, transparent),
    var(--module-shadow);
}

.archive-item:nth-child(3) {
  box-shadow:
    inset 5px 0 0 var(--latent),
    inset 0 1px 0 color-mix(in srgb, white 54%, transparent),
    var(--module-shadow);
}

.route-curtain {
  transform: translate3d(0, 8px, 0) scale(0.98);
}

.route-curtain::after {
  content: "sequence update";
  position: absolute;
  left: 12px;
  top: -18px;
  color: color-mix(in srgb, var(--tensor) 66%, var(--muted));
  font: 800 0.62rem/1 "SFMono-Regular", Consolas, monospace;
  text-transform: uppercase;
}

@media (max-width: 960px) {
  .hero-stage {
    grid-template-columns: 1fr;
  }

  .school-name,
  .study-line,
  .identity-rule {
    margin-left: 24px;
  }
}

@media (max-width: 680px) {
  .intro-glass h1 {
    padding: 22px 24px;
  }

  .intro-copy {
    margin-top: 0;
  }

  .portal-actions::after {
    display: none;
  }
}

/* UX polish: responsive media panels, unified icons, smoother transitions */
@view-transition {
  navigation: auto;
}

::view-transition-old(root) {
  animation: blueprint-fade-out 220ms ease both;
}

::view-transition-new(root) {
  animation: blueprint-fade-in 420ms cubic-bezier(.16, 1, .3, 1) both;
}

@keyframes blueprint-fade-out {
  to {
    opacity: 0.84;
    transform: translateY(6px) scale(0.992);
    filter: blur(2px);
  }
}

@keyframes blueprint-fade-in {
  from {
    opacity: 0;
    transform: translateY(14px) scale(0.99);
    filter: blur(8px);
  }
}

.route-curtain {
  min-height: 42px;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--module-bg-2) 94%, white 3%), var(--module-bg)),
    linear-gradient(90deg, color-mix(in srgb, var(--tensor) 6%, transparent), transparent 42%, color-mix(in srgb, var(--activation) 5%, transparent));
  transform: translate3d(0, 10px, 0) scale(0.985);
}

.route-curtain::before {
  background: color-mix(in srgb, var(--tensor) 20%, var(--hairline));
}

.route-progress {
  transform-origin: left center;
  animation: route-progress 1180ms cubic-bezier(.16, 1, .3, 1) forwards;
}

.route-node.is-from,
.route-node.is-to {
  color: var(--ink);
}

.route-node.is-to::before {
  transform: scale(1.08);
}

@keyframes route-track-in {
  0% {
    opacity: 0;
    transform: translate3d(0, 14px, 0) scale(0.985);
  }
  8%,
  90% {
    opacity: 1;
    transform: translate3d(0, 0, 0) scale(1);
  }
  100% {
    opacity: 0;
    transform: translate3d(0, 8px, 0) scale(0.992);
  }
}

@keyframes route-progress {
  0% {
    transform: scaleX(0);
    opacity: 0;
  }
  18% {
    opacity: 1;
  }
  100% {
    transform: scaleX(1);
    opacity: 1;
  }
}

.archive-item a {
  grid-template-columns: minmax(150px, 0.42fr) minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px 24px;
}

.post-visual {
  grid-column: 1;
  grid-row: 1 / span 4;
  min-height: 136px;
  border: 1px solid color-mix(in srgb, var(--tensor) 24%, var(--hairline));
  border-radius: 8px;
  overflow: hidden;
  background:
    radial-gradient(circle at 22% 28%, color-mix(in srgb, var(--tensor) 32%, transparent) 0 6px, transparent 7px),
    radial-gradient(circle at 72% 66%, color-mix(in srgb, var(--activation) 24%, transparent) 0 5px, transparent 6px),
    linear-gradient(90deg, color-mix(in srgb, var(--tensor) 16%, transparent) 1px, transparent 1px),
    linear-gradient(color-mix(in srgb, var(--tensor) 12%, transparent) 1px, transparent 1px),
    color-mix(in srgb, var(--module-bg-2) 70%, var(--page));
  background-size: auto, auto, 18px 18px, 18px 18px, auto;
  box-shadow: inset 4px 0 0 color-mix(in srgb, var(--tensor) 52%, transparent);
}

.post-visual.green {
  box-shadow: inset 4px 0 0 color-mix(in srgb, var(--activation) 58%, transparent);
}

.post-visual.coral {
  box-shadow: inset 4px 0 0 color-mix(in srgb, var(--loss) 58%, transparent);
}

.post-visual > span {
  position: absolute;
  display: block;
  border-radius: 999px;
  background: color-mix(in srgb, var(--tensor) 28%, transparent);
}

.post-visual > span:nth-child(1) {
  width: 70%;
  height: 2px;
  left: 15%;
  top: 34%;
  transform: rotate(16deg);
}

.post-visual > span:nth-child(2) {
  width: 52%;
  height: 2px;
  right: 12%;
  top: 58%;
  transform: rotate(-20deg);
}

.post-visual > span:nth-child(3) {
  width: 42px;
  height: 42px;
  right: 18px;
  bottom: 18px;
  border: 1px solid color-mix(in srgb, var(--tensor) 28%, transparent);
  background: color-mix(in srgb, var(--module-bg) 74%, transparent);
}

.archive-item .tag,
.archive-item time,
.archive-item h2,
.archive-item p {
  grid-column: 2 / -1;
}

.archive-item h2 {
  margin-top: 2px;
}

.archive-item p {
  max-width: 720px;
}

.archive-item time {
  grid-column: 3;
}

.archive-item.is-opening {
  z-index: 4;
  transform: translateY(-8px) scale(1.018);
  box-shadow: 0 30px 80px color-mix(in srgb, var(--tensor) 22%, transparent);
}

body.is-post-opening .archive-item:not(.is-opening) {
  opacity: 0.42;
  transform: scale(0.985);
}

.article-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 34%);
  align-items: end;
  gap: 18px 28px;
}

.article-header .tag,
.article-header h1,
.article-header p,
.article-header time {
  grid-column: 1;
}

.article-visual {
  grid-column: 2;
  grid-row: 1 / span 4;
  align-self: stretch;
  min-height: clamp(190px, 28vw, 320px);
  border: 1px solid color-mix(in srgb, var(--tensor) 24%, var(--hairline));
  border-radius: 10px;
  background:
    radial-gradient(circle at 24% 30%, color-mix(in srgb, var(--tensor) 34%, transparent) 0 7px, transparent 8px),
    radial-gradient(circle at 72% 62%, color-mix(in srgb, var(--activation) 26%, transparent) 0 7px, transparent 8px),
    linear-gradient(90deg, color-mix(in srgb, var(--tensor) 18%, transparent) 1px, transparent 1px),
    linear-gradient(color-mix(in srgb, var(--tensor) 14%, transparent) 1px, transparent 1px),
    color-mix(in srgb, var(--module-bg-2) 74%, var(--page));
  background-size: auto, auto, 22px 22px, 22px 22px, auto;
  box-shadow: inset 5px 0 0 color-mix(in srgb, var(--tensor) 54%, transparent);
  overflow: hidden;
}

.article-visual > span {
  position: absolute;
  display: block;
  border-radius: 999px;
  background: color-mix(in srgb, var(--tensor) 28%, transparent);
}

.article-visual > span:nth-child(1) {
  width: 74%;
  height: 2px;
  left: 12%;
  top: 34%;
  transform: rotate(14deg);
}

.article-visual > span:nth-child(2) {
  width: 64%;
  height: 2px;
  right: 8%;
  top: 58%;
  transform: rotate(-18deg);
}

.article-visual > span:nth-child(3) {
  width: 84px;
  height: 84px;
  right: 18px;
  bottom: 18px;
  border: 1px solid color-mix(in srgb, var(--tensor) 28%, transparent);
  background: color-mix(in srgb, var(--module-bg) 66%, transparent);
}

.article-visual > span:nth-child(4) {
  width: 48px;
  height: 48px;
  left: 18px;
  bottom: 30px;
}

body.is-post-entering .article {
  opacity: 0;
  transform: translateY(18px) scale(0.992);
}

.article {
  transition: opacity 420ms cubic-bezier(.16, 1, .3, 1), transform 520ms cubic-bezier(.16, 1, .3, 1);
}

.portal-icon,
.contact-symbol {
  overflow: hidden;
}

.portal-icon::after,
.contact-symbol::after {
  content: "";
  position: absolute;
  inset: 9px;
  border: 1.8px solid currentColor;
  border-radius: 4px;
  opacity: 0.92;
  transition: transform 220ms var(--motion-spring), opacity 180ms ease;
}

.document-icon::after {
  border-radius: 3px;
  box-shadow: inset 0 -5px 0 color-mix(in srgb, currentColor 16%, transparent);
}

.notes-icon::after {
  border-radius: 50%;
  border-top-color: transparent;
}

.contact-icon::after,
.mail-symbol::after {
  border-radius: 4px;
  transform: skewY(-8deg);
}

.phone-symbol::after {
  inset: 8px 12px;
  border-radius: 8px;
}

.discord-symbol,
.bilibili-symbol {
  font-size: 0;
}

.discord-symbol::after,
.bilibili-symbol::after {
  border-radius: 50%;
}

.discord-symbol::before,
.bilibili-symbol::before {
  content: "";
  position: absolute;
  inset: 17px;
  z-index: 1;
  border-radius: 50%;
  background: currentColor;
  box-shadow:
    -8px 0 0 currentColor,
    8px 0 0 currentColor;
}

.portal-button:hover .portal-icon::after,
.contact-card:hover .contact-symbol::after {
  transform: translate3d(2px, -2px, 0) rotate(-7deg);
}

.article-body img,
.article-body video,
.article-body svg {
  max-width: 100%;
  height: auto;
  border-radius: 10px;
}

.article-body pre {
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

@media (max-width: 760px) {
  .reveal-on-scroll,
  .reveal-on-scroll.is-visible {
    opacity: 1;
    filter: none;
    transform: none;
  }

  .archive-shell {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .topic-panel {
    position: relative;
    top: auto;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    padding: 14px;
  }

  .topic-panel::before {
    flex: 0 0 auto;
    margin-right: 100%;
  }

  .topic-panel h2 {
    width: 100%;
    margin-bottom: 2px;
  }

  .topic-panel a,
  .topic-panel button {
    width: auto;
    min-height: 34px;
    padding: 7px 10px;
    border: 1px solid color-mix(in srgb, var(--tensor) 14%, var(--hairline));
    background: color-mix(in srgb, var(--module-bg-2) 62%, var(--module-bg));
  }

  .archive-list::before {
    display: none;
  }

  .archive-item a {
    grid-template-columns: 1fr;
    padding: 18px;
    gap: 12px;
  }

  .post-visual,
  .archive-item .tag,
  .archive-item time,
  .archive-item h2,
  .archive-item p {
    grid-column: 1;
    grid-row: auto;
  }

  .post-visual {
    grid-row: auto;
    min-height: 132px;
  }

  .archive-item time {
    justify-self: start;
    margin-top: -4px;
  }

  .article-main {
    width: min(100% - 24px, 1080px);
    padding-top: 28px;
  }

  .article {
    padding: 18px;
  }

  .article-header {
    grid-template-columns: 1fr;
  }

  .article-visual,
  .article-header .tag,
  .article-header h1,
  .article-header p,
  .article-header time {
    grid-column: 1;
  }

  .article-visual {
    grid-row: auto;
    min-height: 180px;
    order: -1;
  }

  .article-header h1 {
    font-size: clamp(2rem, 12vw, 3rem);
    line-height: 1.04;
  }

  .article-body {
    font-size: 1rem;
    line-height: 1.78;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 390px) {
  .site-header {
    padding-inline: 12px;
  }

  .subpage-shell {
    width: min(100% - 22px, 1080px);
    padding-top: 28px;
  }

  .subpage-hero {
    padding: 24px 18px;
  }

  .subpage-hero h1 {
    font-size: clamp(2.4rem, 16vw, 3.2rem);
  }

  .route-curtain {
    width: calc(100% - 24px);
  }
}

/* ML research system pass: attention-map identity, card taxonomy, and calmer routing. */
.intro-glass {
  --identity-line: color-mix(in srgb, var(--tensor) 34%, var(--hairline));
}

.research-identity {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px 14px;
  align-items: center;
  width: min(100%, 760px);
  margin: 14px 0 18px;
  padding: 15px 16px;
  border: 1px solid color-mix(in srgb, var(--tensor) 18%, var(--hairline));
  border-radius: 12px;
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--tensor) 10%, transparent), transparent 42%),
    linear-gradient(135deg, color-mix(in srgb, var(--module-bg) 80%, transparent), color-mix(in srgb, var(--module-bg-2) 58%, transparent));
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, white 38%, transparent),
    0 18px 42px color-mix(in srgb, var(--ink) 8%, transparent);
  overflow: hidden;
}

.research-identity::before,
.research-identity::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.research-identity::before {
  inset: 0;
  background:
    radial-gradient(circle at 17% 48%, color-mix(in srgb, var(--tensor) 52%, transparent) 0 3px, transparent 4px),
    radial-gradient(circle at 49% 48%, color-mix(in srgb, var(--activation) 42%, transparent) 0 3px, transparent 4px),
    radial-gradient(circle at 82% 48%, color-mix(in srgb, var(--tensor) 48%, transparent) 0 3px, transparent 4px),
    linear-gradient(90deg, transparent 0 17%, var(--identity-line) 17% calc(17% + 1px), transparent calc(17% + 1px) 49%, var(--identity-line) 49% calc(49% + 1px), transparent calc(49% + 1px) 82%, var(--identity-line) 82% calc(82% + 1px), transparent calc(82% + 1px)),
    linear-gradient(0deg, transparent 0 47%, color-mix(in srgb, var(--tensor) 14%, transparent) 47% calc(47% + 1px), transparent calc(47% + 1px));
  opacity: .68;
}

.research-identity::after {
  right: 12px;
  top: 10px;
  width: 62px;
  height: 38px;
  border: 1px solid color-mix(in srgb, var(--tensor) 18%, transparent);
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--tensor) 18%, transparent) 1px, transparent 1px),
    linear-gradient(color-mix(in srgb, var(--tensor) 14%, transparent) 1px, transparent 1px);
  background-size: 12px 12px;
  border-radius: 8px;
  opacity: .6;
}

.research-identity .school-name,
.research-identity .study-line,
.research-identity .identity-rule {
  position: relative;
  z-index: 1;
  margin: 0;
}

.research-identity .school-name {
  grid-column: 1 / -1;
  width: auto;
  max-width: min(100%, 620px);
  min-height: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: none;
  box-shadow: none;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.4vw, 1.72rem);
  font-weight: 720;
  letter-spacing: 0;
  line-height: 1.1;
}

.research-identity .identity-rule {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, color-mix(in srgb, var(--tensor) 70%, transparent), transparent);
}

.research-identity .study-line {
  justify-self: start;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  width: auto;
  min-height: 0;
  padding: 0;
  border: 0;
  background: none;
  color: var(--muted);
  font-family: var(--font-utility);
  font-size: clamp(.75rem, 1.2vw, .88rem);
  font-weight: 650;
}

.research-identity .study-line span {
  padding: 6px 8px;
  border: 1px solid color-mix(in srgb, var(--tensor) 14%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--module-bg-2) 66%, transparent);
}

.portal-icon,
.contact-symbol {
  color: var(--tensor);
  border-radius: 12px;
  background:
    linear-gradient(90deg, color-mix(in srgb, currentColor 12%, transparent) 1px, transparent 1px),
    linear-gradient(color-mix(in srgb, currentColor 10%, transparent) 1px, transparent 1px),
    color-mix(in srgb, var(--module-bg-2) 72%, transparent);
  background-size: 11px 11px, 11px 11px, auto;
}

.portal-icon::before,
.portal-icon::after,
.contact-symbol::before,
.contact-symbol::after {
  content: "";
  position: absolute;
  inset: auto;
  display: block;
  border: 0;
  border-radius: 999px;
  background: currentColor;
  opacity: .95;
  transition: transform 260ms var(--motion-spring), opacity 180ms ease;
}

.portal-icon::before,
.contact-symbol::before {
  width: 5px;
  height: 5px;
  left: 11px;
  top: 13px;
  box-shadow:
    13px -5px 0 currentColor,
    21px 8px 0 color-mix(in srgb, var(--activation) 90%, currentColor),
    8px 20px 0 currentColor;
}

.portal-icon::after,
.contact-symbol::after {
  width: 26px;
  height: 1.7px;
  left: 10px;
  top: 22px;
  transform: rotate(-18deg);
  box-shadow: 0 9px 0 color-mix(in srgb, currentColor 68%, transparent);
}

.document-icon,
.mail-symbol {
  color: var(--activation);
}

.document-icon::after {
  width: 25px;
  height: 25px;
  left: 10px;
  top: 10px;
  border-radius: 5px;
  background:
    linear-gradient(90deg, color-mix(in srgb, currentColor 72%, transparent) 2px, transparent 2px),
    linear-gradient(color-mix(in srgb, currentColor 60%, transparent) 2px, transparent 2px);
  background-size: 8px 8px;
  box-shadow: none;
  transform: none;
}

.notes-icon::after {
  width: 27px;
  height: 16px;
  left: 10px;
  top: 17px;
  border: 2px solid currentColor;
  border-left: 0;
  border-bottom: 0;
  border-radius: 50% 50% 0 0;
  background: transparent;
  transform: rotate(-13deg);
  box-shadow: none;
}

.contact-icon::after,
.phone-symbol::after {
  width: 28px;
  height: 2px;
  left: 9px;
  top: 22px;
  background: currentColor;
  transform: rotate(24deg);
  box-shadow:
    0 -9px 0 color-mix(in srgb, currentColor 38%, transparent),
    0 9px 0 color-mix(in srgb, currentColor 44%, transparent);
}

.discord-symbol,
.bilibili-symbol {
  font-size: 0;
}

.discord-symbol::after,
.bilibili-symbol::after {
  width: 24px;
  height: 24px;
  left: 11px;
  top: 11px;
  border: 1.7px solid currentColor;
  border-radius: 50%;
  background: transparent;
  transform: none;
  box-shadow: none;
}

.portal-button:hover .portal-icon::before,
.contact-card:hover .contact-symbol::before {
  transform: translate3d(1px, -2px, 0) scale(1.08);
}

.portal-button:hover .portal-icon::after,
.contact-card:hover .contact-symbol::after {
  transform: translate3d(3px, -2px, 0) rotate(-12deg);
}

.route-curtain {
  left: 50%;
  right: auto;
  bottom: max(24px, env(safe-area-inset-bottom));
  width: min(440px, calc(100% - 32px));
  min-height: 52px;
  transform: translateX(-50%);
  border: 1px solid color-mix(in srgb, var(--tensor) 20%, var(--hairline));
  border-radius: 999px;
  background:
    radial-gradient(circle at 18% 50%, color-mix(in srgb, var(--tensor) 16%, transparent), transparent 35%),
    color-mix(in srgb, var(--module-bg) 84%, transparent);
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, white 32%, transparent),
    0 20px 60px color-mix(in srgb, var(--ink) 18%, transparent);
  backdrop-filter: blur(20px);
}

.route-curtain-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  height: 100%;
  padding: 10px 12px 10px 16px;
}

.route-progress {
  display: none;
}

.route-chip {
  color: var(--muted);
  font-family: var(--font-utility);
  font-size: .68rem;
  font-weight: 760;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.route-flow {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  gap: 8px;
  color: var(--ink);
}

.route-node {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  width: auto;
  min-width: 0;
  color: inherit;
  font-family: var(--font-utility);
  font-size: .76rem;
  font-weight: 720;
}

.route-node::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 4px color-mix(in srgb, currentColor 12%, transparent);
}

.route-node.is-from {
  color: var(--muted);
}

.route-node.is-to {
  color: var(--tensor);
}

.route-arrow {
  color: var(--activation);
  transform: translateY(-1px);
}

body.is-section-switching .space-panel-inner {
  transition-duration: 720ms;
}

.archive-list {
  gap: 18px;
}

.archive-item {
  border-radius: 16px;
}

.archive-item::before,
.archive-item::after {
  opacity: 0;
}

.archive-item a {
  grid-template-columns: minmax(112px, 158px) minmax(0, 1fr) auto;
  align-items: center;
}

.archive-item.card-green a {
  grid-template-columns: minmax(144px, 188px) minmax(0, 1fr) auto;
}

.archive-item.card-coral a {
  grid-template-columns: minmax(104px, 144px) minmax(0, 1fr) auto;
}

.archive-item.card-blue a {
  grid-template-columns: minmax(124px, 168px) minmax(0, 1fr) auto;
}

.post-visual {
  position: relative;
  border-radius: 14px;
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--tensor) 13%, transparent) 1px, transparent 1px),
    linear-gradient(color-mix(in srgb, var(--tensor) 10%, transparent) 1px, transparent 1px),
    color-mix(in srgb, var(--module-bg-2) 72%, transparent);
  background-size: 16px 16px, 16px 16px, auto;
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--tensor) 18%, transparent);
}

.card-green .post-visual {
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--activation) 18%, transparent) 1px, transparent 1px),
    linear-gradient(color-mix(in srgb, var(--activation) 12%, transparent) 1px, transparent 1px),
    radial-gradient(circle at 72% 30%, color-mix(in srgb, var(--activation) 24%, transparent), transparent 32%),
    color-mix(in srgb, var(--module-bg-2) 72%, transparent);
  background-size: 13px 13px, 13px 13px, auto, auto;
}

.card-blue .post-visual {
  background:
    radial-gradient(circle at 18% 26%, color-mix(in srgb, var(--tensor) 38%, transparent) 0 5px, transparent 6px),
    radial-gradient(circle at 78% 35%, color-mix(in srgb, var(--activation) 34%, transparent) 0 5px, transparent 6px),
    radial-gradient(circle at 44% 74%, color-mix(in srgb, var(--tensor) 30%, transparent) 0 5px, transparent 6px),
    linear-gradient(155deg, color-mix(in srgb, var(--tensor) 18%, transparent), transparent 58%),
    color-mix(in srgb, var(--module-bg-2) 72%, transparent);
}

.card-coral .post-visual {
  background:
    conic-gradient(from 210deg at 50% 50%, color-mix(in srgb, var(--loss) 24%, transparent), transparent 34%, color-mix(in srgb, var(--tensor) 14%, transparent), transparent 72%),
    color-mix(in srgb, var(--module-bg-2) 72%, transparent);
}

.post-visual > span {
  background: color-mix(in srgb, var(--tensor) 46%, transparent);
}

.card-green .post-visual > span:nth-child(1) {
  height: 2px;
  left: 13%;
  top: 70%;
  width: 74%;
  transform: rotate(-9deg);
}

.card-green .post-visual > span:nth-child(2) {
  height: 42%;
  left: 32%;
  top: 22%;
  width: 2px;
  transform: rotate(18deg);
}

.card-blue .post-visual > span:nth-child(1),
.card-blue .post-visual > span:nth-child(2) {
  height: 2px;
  width: 68%;
}

.card-coral .post-visual > span:nth-child(3) {
  right: 50%;
  bottom: 50%;
  width: 54px;
  height: 54px;
  transform: translate(50%, 50%);
  border-radius: 50%;
}

.archive-item .tag {
  justify-self: start;
  white-space: nowrap;
}

.archive-item h2 {
  max-width: 100%;
  font-size: clamp(1.35rem, 2.35vw, 2.2rem);
  overflow-wrap: anywhere;
}

.article-header {
  display: block;
  max-width: 860px;
  margin-inline: auto;
  padding-bottom: 26px;
  border-bottom: 1px solid color-mix(in srgb, var(--tensor) 14%, var(--hairline));
}

.article-header .tag {
  margin-bottom: 18px;
}

.article-header h1 {
  max-width: 820px;
  font-size: clamp(2.25rem, 5.6vw, 4.8rem);
  line-height: .98;
  text-wrap: balance;
}

.article-header p {
  max-width: 720px;
  margin-top: 18px;
  color: var(--muted);
  font-size: clamp(1rem, 1.45vw, 1.2rem);
  line-height: 1.72;
}

.article-header time {
  display: inline-flex;
  margin-top: 20px;
  color: var(--soft);
  font-family: var(--font-utility);
  font-size: .84rem;
  font-weight: 650;
}

.article-body {
  max-width: 820px;
  margin-inline: auto;
}

.article-body h2,
.article-body h3 {
  color: var(--ink);
  line-height: 1.18;
  text-wrap: balance;
}

.article-body blockquote {
  border-left: 3px solid var(--tensor);
  background: color-mix(in srgb, var(--module-bg-2) 58%, transparent);
  border-radius: 0 12px 12px 0;
  padding: 12px 16px;
}

.article-body pre {
  border: 1px solid color-mix(in srgb, var(--tensor) 18%, var(--hairline));
  border-radius: 12px;
  background: color-mix(in srgb, var(--ink) 6%, var(--module-bg-2));
}

.article-visual {
  display: none;
}

@media (max-width: 760px) {
  .research-identity {
    grid-template-columns: 1fr;
    padding: 13px;
    border-radius: 10px;
  }

  .research-identity::after {
    display: none;
  }

  .research-identity .study-line {
    gap: 6px;
  }

  .research-identity .study-line span {
    padding: 5px 7px;
  }

  .route-curtain {
    width: calc(100% - 24px);
    min-height: 48px;
  }

  .route-curtain-inner {
    padding-inline: 12px;
  }

  .route-chip {
    display: none;
  }

  .route-flow {
    width: 100%;
    justify-content: center;
  }

  .archive-item a,
  .archive-item.card-green a,
  .archive-item.card-coral a,
  .archive-item.card-blue a {
    grid-template-columns: 1fr;
  }

  .post-visual {
    min-height: 118px;
  }

  .archive-item h2 {
    font-size: clamp(1.45rem, 9vw, 2.25rem);
  }

  .article-title-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .article-github-button {
    margin-top: 0;
  }

  .article-header h1 {
    font-size: clamp(2rem, 11vw, 3.15rem);
  }

  .article-body pre,
  .article-body code {
    overflow-wrap: normal;
  }
}

/* QKV identity refinement and compact section-dot switcher. */
.brand-mark {
  position: relative;
  width: 34px;
  height: 34px;
  border-radius: 12px;
  border: 1px solid color-mix(in srgb, var(--tensor) 34%, var(--hairline));
  background:
    radial-gradient(circle at 24% 28%, color-mix(in srgb, var(--tensor) 82%, transparent) 0 4px, transparent 5px),
    radial-gradient(circle at 76% 32%, color-mix(in srgb, var(--activation) 70%, transparent) 0 4px, transparent 5px),
    radial-gradient(circle at 52% 76%, color-mix(in srgb, var(--loss) 64%, transparent) 0 4px, transparent 5px),
    color-mix(in srgb, var(--module-bg) 82%, transparent);
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, white 42%, transparent),
    0 10px 24px color-mix(in srgb, var(--tensor) 15%, transparent);
  color: var(--ink);
  overflow: hidden;
}

.brand-mark::before,
.brand-mark::after {
  content: "";
  position: absolute;
  height: 1.5px;
  width: 24px;
  left: 5px;
  top: 16px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--tensor) 54%, transparent);
  transform: rotate(14deg);
}

.brand-mark::after {
  top: 18px;
  transform: rotate(-30deg);
  background: color-mix(in srgb, var(--activation) 45%, transparent);
}

.brand-mark span {
  position: absolute;
  inset: auto 4px 3px;
  z-index: 1;
  color: color-mix(in srgb, var(--ink) 82%, var(--tensor));
  font-family: var(--font-utility);
  font-size: 8px;
  font-weight: 850;
  letter-spacing: .02em;
  line-height: 1;
  text-transform: uppercase;
}

.qkv-identity {
  grid-template-columns: minmax(230px, .95fr) minmax(280px, 1.35fr);
  gap: 18px;
  padding: 18px;
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--tensor) 9%, transparent), transparent 46%),
    color-mix(in srgb, var(--module-bg) 78%, transparent);
}

.qkv-identity::before {
  background:
    radial-gradient(circle at 42% 50%, color-mix(in srgb, var(--tensor) 48%, transparent) 0 3px, transparent 4px),
    radial-gradient(circle at 58% 28%, color-mix(in srgb, var(--activation) 44%, transparent) 0 3px, transparent 4px),
    radial-gradient(circle at 58% 72%, color-mix(in srgb, var(--loss) 35%, transparent) 0 3px, transparent 4px),
    linear-gradient(90deg, transparent 0 41%, color-mix(in srgb, var(--tensor) 18%, transparent) 41% calc(41% + 1px), transparent calc(41% + 1px)),
    linear-gradient(24deg, transparent 0 49%, color-mix(in srgb, var(--tensor) 16%, transparent) 49% calc(49% + 1px), transparent calc(49% + 1px)),
    linear-gradient(-24deg, transparent 0 49%, color-mix(in srgb, var(--activation) 14%, transparent) 49% calc(49% + 1px), transparent calc(49% + 1px));
  opacity: .72;
}

.qkv-identity::after {
  display: none;
}

.identity-school {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 8px;
  min-width: 0;
}

.qkv-identity .school-name {
  grid-column: auto;
  max-width: 100%;
  font-size: clamp(1.35rem, 2.35vw, 2rem);
  line-height: 1.08;
  overflow-wrap: anywhere;
}

.identity-subline {
  color: var(--muted);
  font-family: var(--font-utility);
  font-size: .75rem;
  font-weight: 720;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.qkv-map {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  min-width: 0;
}

.qkv-map::before {
  content: "";
  position: absolute;
  left: 9%;
  right: 9%;
  top: 50%;
  height: 1px;
  background: linear-gradient(90deg, color-mix(in srgb, var(--tensor) 45%, transparent), color-mix(in srgb, var(--activation) 36%, transparent), color-mix(in srgb, var(--loss) 30%, transparent));
  transform: translateY(-50%);
  opacity: .8;
}

.qkv-token {
  position: relative;
  display: grid;
  gap: 6px;
  min-width: 0;
  padding: 12px 10px;
  border: 1px solid color-mix(in srgb, var(--tensor) 18%, var(--hairline));
  border-radius: 14px;
  background: color-mix(in srgb, var(--module-bg-2) 72%, transparent);
  box-shadow: inset 0 1px 0 color-mix(in srgb, white 38%, transparent);
}

.qkv-token strong {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  color: white;
  background: var(--tensor);
  font-family: var(--font-utility);
  font-size: .88rem;
  font-weight: 850;
}

.qkv-token em {
  color: var(--ink);
  font-style: normal;
  font-family: var(--font-utility);
  font-size: clamp(.72rem, 1vw, .86rem);
  font-weight: 760;
  overflow-wrap: anywhere;
}

.k-token strong {
  background: var(--activation);
}

.v-token strong {
  background: color-mix(in srgb, var(--loss) 78%, var(--tensor));
}

.model-backdrop span {
  display: none;
}

.quick-panel::after,
.quick-panel::before,
.intro-glass > h1::before,
.portal-actions::before {
  content: none;
}

.model-backdrop::before,
.model-backdrop::after {
  opacity: .16;
}

.space-viewport::before,
.space-viewport::after,
.hero-stage::before,
.intro-glass::before,
.intro-copy::before,
.portal-actions::before,
.quick-panel::before,
.subpage-hero::before,
.archive-shell::before,
.route-curtain::before,
.route-curtain::after {
  content: none;
}

.route-curtain {
  width: auto;
  min-width: 136px;
  min-height: 42px;
  padding: 0;
  border-radius: 999px;
  background: color-mix(in srgb, var(--module-bg) 82%, transparent);
}

.route-curtain-inner {
  justify-content: center;
  gap: 12px;
  padding: 11px 14px;
}

.route-chip,
.route-flow,
.route-node,
.route-arrow {
  display: none;
}

.route-dot {
  position: relative;
  width: 12px;
  height: 12px;
  padding: 0;
  border: 1px solid color-mix(in srgb, var(--tensor) 28%, var(--hairline));
  border-radius: 50%;
  background: color-mix(in srgb, var(--module-bg-2) 75%, transparent);
  cursor: pointer;
  transition: transform 200ms var(--motion-spring), background 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.route-dot:hover,
.route-dot:focus-visible {
  transform: translateY(-2px) scale(1.12);
  outline: none;
  border-color: var(--tensor);
}

.route-dot.is-from {
  background: color-mix(in srgb, var(--muted) 26%, var(--module-bg-2));
}

.route-dot.is-to {
  background: var(--tensor);
  border-color: var(--tensor);
  box-shadow:
    0 0 0 5px color-mix(in srgb, var(--tensor) 14%, transparent),
    0 8px 18px color-mix(in srgb, var(--tensor) 22%, transparent);
  transform: scale(1.18);
}

@media (max-width: 760px) {
  .qkv-identity {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .qkv-map {
    grid-template-columns: 1fr;
  }

  .qkv-map::before {
    left: 23px;
    right: auto;
    top: 12%;
    bottom: 12%;
    width: 1px;
    height: auto;
    background: linear-gradient(180deg, color-mix(in srgb, var(--tensor) 38%, transparent), color-mix(in srgb, var(--activation) 34%, transparent), color-mix(in srgb, var(--loss) 30%, transparent));
  }

  .qkv-token {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
  }

  .route-curtain {
    width: auto;
    min-width: 132px;
  }
}

/* Cleaner QKV pass: keep the idea, remove the loud boxes and clipped background labels. */
.geo-scene {
  display: none;
}

.qkv-identity {
  grid-template-columns: minmax(220px, .9fr) minmax(260px, 1.1fr);
  align-items: center;
  gap: 16px;
  padding: 16px 18px;
  border-radius: 12px;
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--module-bg-2) 78%, transparent), color-mix(in srgb, var(--module-bg) 70%, transparent)),
    linear-gradient(90deg, color-mix(in srgb, var(--tensor) 10%, transparent) 1px, transparent 1px);
  background-size: auto, 32px 100%;
}

.qkv-identity::before {
  background:
    linear-gradient(90deg, transparent 0 47%, color-mix(in srgb, var(--tensor) 18%, transparent) 47% calc(47% + 1px), transparent calc(47% + 1px)),
    radial-gradient(circle at 47% 50%, color-mix(in srgb, var(--tensor) 34%, transparent) 0 3px, transparent 4px),
    radial-gradient(circle at 66% 50%, color-mix(in srgb, var(--activation) 26%, transparent) 0 3px, transparent 4px);
  opacity: .48;
}

.identity-school {
  gap: 6px;
}

.qkv-identity .school-name {
  font-size: clamp(1.28rem, 2.15vw, 1.78rem);
}

.identity-subline {
  font-size: .68rem;
  opacity: .72;
}

.qkv-map {
  display: flex;
  align-items: stretch;
  justify-content: flex-end;
  gap: 8px;
}

.qkv-map::before {
  left: 7%;
  right: 7%;
  top: 50%;
  opacity: .28;
}

.qkv-token {
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  min-width: 0;
  padding: 8px 10px;
  border-radius: 999px;
  border-color: color-mix(in srgb, var(--tensor) 12%, var(--hairline));
  background: color-mix(in srgb, var(--module-bg-2) 46%, transparent);
  box-shadow: none;
}

.qkv-token strong {
  width: 20px;
  height: 20px;
  font-size: .68rem;
}

.qkv-token em {
  font-size: clamp(.66rem, .86vw, .78rem);
  font-weight: 720;
  white-space: nowrap;
}

.route-curtain {
  z-index: 120;
  pointer-events: auto;
}

.route-curtain-inner {
  pointer-events: auto;
}

.route-dot {
  pointer-events: auto;
}

@media (max-width: 760px) {
  .qkv-identity {
    grid-template-columns: 1fr;
    padding: 14px;
  }

  .qkv-map {
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .qkv-map::before {
    display: none;
  }

  .qkv-token {
    flex: 1 1 132px;
  }
}

/* Final interaction pass. */
.space-panel::before {
  content: inherit;
}

.space-panel[data-panel="home"]::before {
  content: "tokens / input";
}

.space-panel[data-panel="blog"]::before {
  content: "attention / heads";
}

.space-panel[data-panel="notes"]::before {
  content: "latent / notes";
}

.space-panel[data-panel="contact"]::before {
  content: "output / logits";
}

.model-backdrop span {
  display: none;
}

.route-curtain {
  z-index: 999;
  pointer-events: auto !important;
}

.route-curtain-inner,
.route-dot {
  pointer-events: auto !important;
}

/* Home research field: one open attention surface instead of stacked cards. */
[data-panel="home"] {
  --home-rule: color-mix(in srgb, var(--tensor) 24%, var(--hairline));
  --home-rule-soft: color-mix(in srgb, var(--ink) 10%, transparent);
}

[data-panel="home"] .hero-stage {
  isolation: isolate;
}

[data-panel="home"] .geo-scene {
  display: block;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  opacity: .78;
}

[data-panel="home"] .field-trace {
  position: absolute;
  left: 43%;
  width: 62%;
  height: 1px;
  transform-origin: left center;
  pointer-events: none;
}

[data-panel="home"] .trace-query {
  top: 20%;
  background: linear-gradient(90deg, color-mix(in srgb, var(--tensor) 38%, transparent), transparent 82%);
  transform: rotate(18deg);
}

[data-panel="home"] .trace-key {
  top: 45%;
  background: linear-gradient(90deg, color-mix(in srgb, var(--activation) 32%, transparent), transparent 86%);
  transform: rotate(-16deg);
}

[data-panel="home"] .trace-value {
  top: 36%;
  background: linear-gradient(90deg, color-mix(in srgb, var(--loss) 24%, transparent), transparent 76%);
  transform: rotate(72deg);
}

[data-panel="home"] .field-node {
  position: absolute;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border: 1px solid currentColor;
  border-radius: 50%;
  background: color-mix(in srgb, var(--page) 86%, transparent);
  box-shadow: 0 0 0 4px color-mix(in srgb, currentColor 5%, transparent);
  font: 760 .7rem/1 var(--font-utility, "SFMono-Regular", Consolas, monospace);
}

[data-panel="home"] .field-node:empty {
  display: none;
}

[data-panel="home"] .node-query {
  left: 58%;
  top: 18%;
  color: var(--tensor);
}

[data-panel="home"] .node-key {
  right: 8%;
  top: 16%;
  color: var(--activation);
}

[data-panel="home"] .node-value {
  left: 56%;
  bottom: 24%;
  color: var(--loss);
}

[data-panel="home"] .intro-glass,
[data-panel="home"] .qkv-identity,
[data-panel="home"] .quick-panel,
[data-panel="home"] .portal-button {
  border: 0;
  border-radius: 0;
  background: none;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

[data-panel="home"] .intro-glass,
[data-panel="home"] .quick-panel,
[data-panel="home"] .portal-actions {
  position: relative;
  z-index: 2;
}

[data-panel="home"] .intro-glass::before,
[data-panel="home"] .intro-glass::after,
[data-panel="home"] .qkv-identity::before,
[data-panel="home"] .qkv-identity::after,
[data-panel="home"] .quick-panel::before,
[data-panel="home"] .quick-panel::after,
[data-panel="home"] .portal-button::before,
[data-panel="home"] .portal-button::after {
  content: none !important;
}

[data-panel="home"] #home-title {
  width: auto;
  max-width: none;
  min-height: 0;
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
  box-shadow: none;
  overflow: visible;
  text-wrap: balance;
}

[data-panel="home"] #home-title [data-lang-content]:not([hidden]) {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0 .2em;
}

[data-panel="home"] #home-title .name-line {
  display: inline;
  white-space: nowrap;
}

[data-panel="home"] .qkv-identity {
  display: grid;
  grid-template-columns: minmax(240px, auto) minmax(300px, 1fr);
  align-items: end;
  width: min(100%, 690px);
  margin: 0;
  padding: 0;
  overflow: visible;
}

[data-panel="home"] .identity-school {
  gap: 4px;
}

[data-panel="home"] .qkv-identity .school-name {
  font-size: clamp(1.35rem, 2vw, 1.9rem);
  line-height: 1.1;
}

[data-panel="home"] .identity-subline {
  color: var(--muted);
  font-size: .64rem;
  letter-spacing: .04em;
  opacity: .72;
}

[data-panel="home"] .qkv-map {
  position: relative;
  justify-content: flex-start;
  gap: clamp(14px, 1.6vw, 24px);
  padding-left: 26px;
}

[data-panel="home"] .qkv-map::before {
  left: 0;
  right: 0;
  top: 50%;
  display: block;
  height: 1px;
  background: linear-gradient(90deg, var(--home-rule), transparent);
  opacity: .72;
}

[data-panel="home"] .qkv-token {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: auto auto;
  min-width: 0;
  padding: 0;
  border: 0;
  background: transparent;
}

[data-panel="home"] .qkv-token strong {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--page) 92%, transparent);
  font-size: .68rem;
}

[data-panel="home"] .qkv-token em {
  color: var(--ink);
  font-size: .78rem;
  font-weight: 720;
}

[data-panel="home"] .intro-copy {
  position: relative;
  max-width: 660px;
  margin: 0;
  padding: 28px 0 0;
  border: 0;
  border-radius: 0;
  background: none;
  box-shadow: none;
  color: color-mix(in srgb, var(--ink) 72%, var(--muted));
}

[data-panel="home"] .intro-copy::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 42px;
  height: 2px;
  background: var(--tensor);
}

[data-panel="home"] .quick-panel {
  width: 100%;
  min-width: 0;
  padding: 4px 0 4px clamp(24px, 3vw, 48px);
  border-left: 1px solid color-mix(in srgb, var(--tensor) 44%, var(--hairline));
  font-family: var(--font-utility, "SFMono-Regular", Consolas, monospace);
}

[data-panel="home"] .quick-row {
  display: grid;
  grid-template-columns: minmax(72px, .55fr) minmax(0, 1.45fr);
  align-items: center;
  min-height: 74px;
  padding: 14px 0;
  border: 0;
  border-bottom: 1px solid var(--home-rule);
  border-radius: 0;
  background: none;
  box-shadow: none;
}

[data-panel="home"] .quick-row span,
[data-panel="home"] .quick-row strong {
  margin: 0;
}

[data-panel="home"] .quick-row span {
  font-size: .76rem;
}

[data-panel="home"] .quick-row strong {
  font-size: clamp(.78rem, 1vw, .94rem);
  overflow-wrap: anywhere;
}

[data-panel="home"] .portal-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(24px, 4vw, 58px);
  width: 100%;
  margin: 0;
  padding: 0;
}

[data-panel="home"] .portal-button {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) 28px;
  align-items: center;
  gap: 14px;
  min-height: 92px;
  padding: 18px 0 16px;
  border-bottom: 1px solid var(--home-rule);
  color: var(--ink);
  transform: none;
  overflow: visible;
  transition: border-color 180ms ease, transform 220ms var(--motion-ease);
}

[data-panel="home"] .portal-button:nth-child(2) {
  --route-accent: var(--activation);
}

[data-panel="home"] .portal-button:nth-child(3) {
  --route-accent: var(--loss);
}

[data-panel="home"] .route-step-index {
  color: var(--route-accent, var(--tensor));
  font: 760 .76rem/1 var(--font-utility, "SFMono-Regular", Consolas, monospace);
}

[data-panel="home"] .portal-button > span:nth-child(2) {
  display: grid;
  gap: 3px;
  min-width: 0;
}

[data-panel="home"] .portal-button strong {
  font-size: clamp(1.18rem, 1.8vw, 1.62rem);
  line-height: 1.08;
}

[data-panel="home"] .portal-button small {
  color: var(--muted);
  font-size: .7rem;
  line-height: 1.35;
}

[data-panel="home"] .portal-button svg {
  width: 22px;
  height: 22px;
  color: var(--route-accent, var(--tensor));
  transition: transform 220ms var(--motion-ease);
}

[data-panel="home"] .portal-button:hover,
[data-panel="home"] .portal-button:focus-visible {
  border-color: var(--route-accent, var(--tensor));
  background: none;
  box-shadow: none;
  transform: translateY(-2px);
}

[data-panel="home"] .portal-button:hover svg,
[data-panel="home"] .portal-button:focus-visible svg {
  transform: translateX(5px);
}

@media (min-width: 961px) {
  [data-panel="home"] .home-panel-inner {
    flex: 0 0 calc(100svh - 76px);
    min-height: calc(100svh - 76px);
    height: calc(100svh - 76px);
    align-self: flex-start;
    align-items: center;
  }

  [data-panel="home"] .hero-stage {
    width: min(1420px, calc(100% - 80px));
    height: calc(100svh - 76px);
    min-height: 660px;
    max-height: 960px;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    grid-template-rows: minmax(0, 1fr) auto;
    gap: clamp(24px, 3vw, 52px);
    padding: clamp(50px, 7vh, 76px) 0 clamp(28px, 4vh, 44px);
  }

  [data-panel="home"] .intro-glass {
    grid-column: 1 / 9;
    grid-row: 1;
    align-self: center;
    display: grid;
    grid-template-rows: auto auto auto;
    gap: clamp(24px, 3.4vh, 38px);
    width: 100%;
    height: auto;
    padding: 0;
  }

  [data-panel="home"] #home-title {
    font-size: clamp(4rem, 6.4vw, 7rem);
    line-height: .92;
  }

  [data-panel="home"] .quick-panel {
    grid-column: 10 / 13;
    grid-row: 1;
    align-self: center;
    display: grid;
    gap: 0;
    height: auto;
    min-height: 0;
    max-height: none;
  }

  [data-panel="home"] .portal-actions {
    grid-column: 1 / 13;
    grid-row: 2;
    align-self: end;
  }
}


@media (max-width: 960px) {
  [data-panel="home"] .home-panel-inner {
    flex: 0 0 auto;
    min-height: calc(100svh - 76px);
    height: auto;
    align-self: flex-start;
  }

  [data-panel="home"] .hero-stage {
    width: min(100% - 40px, 760px);
    min-height: calc(100svh - 76px);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 34px;
    padding: 56px 0 48px;
  }

  [data-panel="home"] .intro-glass {
    display: grid;
    gap: 26px;
    width: 100%;
    padding: 0;
  }

  [data-panel="home"] #home-title {
    font-size: clamp(2.75rem, 10vw, 5rem);
    line-height: .96;
  }

  [data-panel="home"] #home-title [data-lang-content]:not([hidden]) {
    display: grid;
    gap: 2px;
  }

  [data-panel="home"] .qkv-identity {
    grid-template-columns: 1fr;
    gap: 20px;
    width: 100%;
  }

  [data-panel="home"] .qkv-map {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
    padding-left: 0;
  }

  [data-panel="home"] .qkv-map::before {
    left: 12px;
  }

  [data-panel="home"] .quick-panel {
    display: none;
  }

  [data-panel="home"] .qkv-token {
    flex: 0 0 auto;
    width: auto;
  }

  [data-panel="home"] .portal-actions {
    grid-template-columns: 1fr;
    gap: 0;
  }

  [data-panel="home"] .portal-button {
    min-height: 82px;
  }

  [data-panel="home"] .geo-scene {
    opacity: .42;
  }

  [data-panel="home"] .field-node {
    width: 26px;
    height: 26px;
    font-size: .62rem;
  }

  [data-panel="home"] .node-query {
    left: auto;
    right: 5%;
    top: 8%;
  }

  [data-panel="home"] .node-key {
    right: 16%;
    top: 38%;
  }

  [data-panel="home"] .node-value {
    left: auto;
    right: 4%;
    bottom: 20%;
  }
}

@media (max-width: 520px) {
  [data-panel="home"] .hero-stage {
    width: min(100% - 28px, 760px);
    gap: 28px;
    padding: 38px 0 36px;
  }

  [data-panel="home"] #home-title {
    font-size: clamp(2.4rem, 12.5vw, 3.65rem);
  }

  [data-panel="home"] .qkv-identity .school-name {
    font-size: clamp(1.18rem, 6.2vw, 1.5rem);
  }

  [data-panel="home"] .qkv-map {
    display: grid;
    grid-template-columns: repeat(3, max-content);
    gap: 18px;
  }

  [data-panel="home"] .qkv-token {
    grid-template-columns: auto auto;
    flex: 0 1 auto;
    width: auto;
  }

  [data-panel="home"] .intro-copy {
    padding-top: 22px;
    font-size: .96rem;
    line-height: 1.72;
  }

  [data-panel="home"] .portal-button {
    grid-template-columns: 34px minmax(0, 1fr) 24px;
    gap: 10px;
    min-height: 78px;
  }

  [data-panel="home"] .portal-button strong {
    font-size: 1.16rem;
  }
}

body.is-section-switching .space-panel::after {
  animation: field-drift 900ms cubic-bezier(.16, 1, .3, 1) both;
}

body.is-section-switching .model-backdrop::before {
  animation: field-scan 760ms cubic-bezier(.16, 1, .3, 1) both;
  opacity: .34;
}

body.is-section-switching .model-backdrop::after {
  animation: field-scan-reverse 820ms cubic-bezier(.16, 1, .3, 1) both;
  opacity: .28;
}

@keyframes field-drift {
  0% {
    transform: translate3d(-4vw, 0, 0) scale(1.01);
    filter: saturate(1.06);
  }

  52% {
    transform: translate3d(5vw, -10px, 0) scale(1.025);
    filter: saturate(1.24);
  }

  100% {
    transform: translate3d(0, 0, 0) scale(1);
    filter: saturate(1);
  }
}

@keyframes field-scan {
  0% {
    transform: translate3d(-8vw, 0, 0);
  }

  100% {
    transform: translate3d(8vw, 0, 0);
  }
}

@keyframes field-scan-reverse {
  0% {
    transform: translate3d(9vw, 0, 0) rotate(-9deg);
  }

  100% {
    transform: translate3d(-9vw, 0, 0) rotate(-9deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  body.is-section-switching .space-panel::after,
  body.is-section-switching .model-backdrop::before,
  body.is-section-switching .model-backdrop::after {
    animation: none;
  }
}

/* Minimal QKV plate: quiet labels + rounded discipline blocks. */
.qkv-map {
  justify-content: flex-end;
  gap: 8px;
}

.qkv-map::before {
  opacity: .18;
}

.qkv-token {
  display: inline-grid;
  grid-template-columns: auto auto;
  align-items: center;
  gap: 7px;
  min-height: 36px;
  padding: 7px 10px;
  border: 1px solid color-mix(in srgb, var(--tensor) 18%, var(--hairline));
  border-radius: 12px;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--module-bg-2) 72%, transparent), color-mix(in srgb, var(--module-bg) 62%, transparent));
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, white 42%, transparent),
    0 8px 20px color-mix(in srgb, var(--tensor) 5%, transparent);
}

.qkv-token strong,
.k-token strong,
.v-token strong {
  width: auto;
  height: auto;
  min-width: 18px;
  padding: 2px 5px;
  border: 1px solid color-mix(in srgb, var(--tensor) 20%, var(--hairline));
  border-radius: 7px;
  background: color-mix(in srgb, var(--tensor) 8%, transparent);
  color: color-mix(in srgb, var(--ink) 82%, var(--tensor));
  font-size: .64rem;
  line-height: 1.15;
  box-shadow: none;
}

.qkv-token em {
  color: var(--ink);
  font-size: clamp(.68rem, .86vw, .78rem);
  font-weight: 740;
}

@media (max-width: 760px) {
  .qkv-map {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .qkv-token {
    width: 100%;
    justify-content: start;
  }
}

/* Apple-like compact pager and supplied Limitedrush logo. */
.brand {
  gap: 8px;
}

.brand-mark.logo-mark {
  width: 34px;
  height: 34px;
  border: 0;
  border-radius: 9px;
  background:
    url("assets/favicon.png") center / contain no-repeat,
    transparent;
  box-shadow: none;
}

.brand-mark.logo-mark::before,
.brand-mark.logo-mark::after,
.brand-mark.logo-mark span {
  display: none;
}

.route-curtain {
  left: 50%;
  right: auto;
  bottom: max(24px, env(safe-area-inset-bottom));
  width: auto;
  min-width: 92px;
  min-height: 38px;
  margin: 0;
  padding: 0;
  border: 1px solid color-mix(in srgb, white 28%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, rgba(42, 42, 42, .62) 72%, transparent);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .25),
    0 16px 45px rgba(0, 0, 0, .22);
  backdrop-filter: blur(22px) saturate(1.35);
  -webkit-backdrop-filter: blur(22px) saturate(1.35);
  transform: translate3d(-50%, 12px, 0) scale(.98);
}

body.is-route-leaving .route-curtain {
  transform: translate3d(-50%, 0, 0) scale(1);
}

body.is-route-leaving.route-back .route-curtain {
  transform: translate3d(-50%, 0, 0) scale(1);
}

.route-curtain-inner {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
}

.route-dot {
  width: 10px;
  height: 10px;
  border: 0;
  background: rgba(255, 255, 255, .36);
  box-shadow: none;
}

.route-dot:hover,
.route-dot:focus-visible {
  transform: scale(1.12);
  background: rgba(255, 255, 255, .72);
  outline: none;
}

.route-dot.is-from {
  background: rgba(255, 255, 255, .34);
}

.route-dot.is-to {
  background: rgba(255, 255, 255, .96);
  box-shadow: none;
  transform: scale(1);
}

@media (max-width: 760px) {
  .route-curtain {
    min-width: 88px;
    min-height: 36px;
  }

  .route-curtain-inner {
    gap: 10px;
    padding: 11px 14px;
  }

  .route-dot {
    width: 9px;
    height: 9px;
  }
}

/* Final centering fix + supplied horizontal Limitedrush wordmark. */
.brand-mark.logo-mark {
  width: clamp(118px, 12vw, 158px);
  height: 32px;
  border-radius: 0;
  background: url("assets/limitedrush-wordmark.png") left center / contain no-repeat;
}

.brand-text {
  display: none;
}

body.is-route-leaving .route-curtain {
  animation: route-track-in 4200ms cubic-bezier(.18,.86,.24,1) forwards;
}

body.is-route-leaving.route-back .route-curtain {
  animation-name: route-track-in;
}

@keyframes route-track-in {
  0% {
    opacity: 0;
    transform: translate3d(-50%, 12px, 0) scale(.96);
  }

  8%,
  90% {
    opacity: 1;
    transform: translate3d(-50%, 0, 0) scale(1);
  }

  100% {
    opacity: 0;
    transform: translate3d(-50%, 8px, 0) scale(.98);
  }
}

@media (max-width: 760px) {
  .brand-mark.logo-mark {
    width: 112px;
    height: 30px;
  }
}

/* Pager stability and softer route-field motion. */
.route-curtain {
  border-color: color-mix(in srgb, var(--tensor) 28%, rgba(255, 255, 255, .22));
  background:
    radial-gradient(circle at 50% 0%, color-mix(in srgb, var(--tensor) 18%, transparent), transparent 58%),
    color-mix(in srgb, rgba(35, 60, 76, .56) 72%, transparent);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .28),
    0 16px 42px color-mix(in srgb, var(--tensor) 20%, rgba(0, 0, 0, .16));
}

.route-dot {
  background: color-mix(in srgb, var(--tensor) 28%, rgba(255, 255, 255, .24));
}

.route-dot:hover,
.route-dot:focus-visible {
  background: color-mix(in srgb, var(--tensor) 48%, rgba(255, 255, 255, .58));
}

.route-dot.is-from {
  background: color-mix(in srgb, var(--tensor) 30%, rgba(255, 255, 255, .22));
}

.route-dot.is-to {
  background: color-mix(in srgb, var(--tensor) 34%, rgba(255, 255, 255, .88));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--tensor) 18%, transparent);
}

body.is-section-switching .space-panel::after {
  animation-duration: 760ms;
}

body.is-section-switching .model-backdrop::before,
body.is-section-switching .model-backdrop::after {
  animation-duration: 680ms;
}

@keyframes field-drift {
  0% {
    transform: translate3d(-1.8vw, 0, 0) scale(1.004);
    filter: saturate(1.03);
  }

  52% {
    transform: translate3d(2.4vw, -4px, 0) scale(1.01);
    filter: saturate(1.1);
  }

  100% {
    transform: translate3d(0, 0, 0) scale(1);
    filter: saturate(1);
  }
}

@keyframes field-scan {
  0% {
    transform: translate3d(-3vw, 0, 0);
  }

  100% {
    transform: translate3d(3vw, 0, 0);
  }
}

@keyframes field-scan-reverse {
  0% {
    transform: translate3d(3.4vw, 0, 0) rotate(-9deg);
  }

  100% {
    transform: translate3d(-3.4vw, 0, 0) rotate(-9deg);
  }
}

/* Stronger background travel, calmer fixed UI during section changes. */
.site-header {
  transform: translateZ(0);
  backface-visibility: hidden;
  contain: paint;
}

body.is-section-switching .site-header,
body.is-section-switching .site-header::after,
body.is-section-switching .nav a {
  transition-duration: 0ms;
}

body.is-section-switching .space-panel-inner {
  transition-duration: 760ms;
}

body.is-section-switching .space-panel::after {
  animation: field-drift 980ms cubic-bezier(.16, 1, .3, 1) both;
}

body.is-section-switching .model-backdrop::before {
  animation: field-scan 920ms cubic-bezier(.16, 1, .3, 1) both;
  opacity: .42;
}

body.is-section-switching .model-backdrop::after {
  animation: field-scan-reverse 980ms cubic-bezier(.16, 1, .3, 1) both;
  opacity: .36;
}

@keyframes field-drift {
  0% {
    transform: translate3d(-9vw, 0, 0);
    filter: saturate(1.05);
  }

  55% {
    transform: translate3d(13vw, 0, 0);
    filter: saturate(1.18);
  }

  100% {
    transform: translate3d(0, 0, 0);
    filter: saturate(1);
  }
}

@keyframes field-scan {
  0% {
    transform: translate3d(-18vw, 0, 0);
  }

  100% {
    transform: translate3d(18vw, 0, 0);
  }
}

@keyframes field-scan-reverse {
  0% {
    transform: translate3d(20vw, 0, 0) rotate(-9deg);
  }

  100% {
    transform: translate3d(-20vw, 0, 0) rotate(-9deg);
  }
}

/* Readable semantic icons built from the same ML line/node language. */
.portal-icon,
.contact-symbol {
  position: relative;
  width: 44px;
  height: 44px;
  overflow: hidden;
  color: var(--tensor);
  border: 1px solid color-mix(in srgb, var(--tensor) 20%, var(--hairline));
  border-radius: 12px;
  background:
    linear-gradient(90deg, color-mix(in srgb, currentColor 9%, transparent) 1px, transparent 1px),
    linear-gradient(color-mix(in srgb, currentColor 7%, transparent) 1px, transparent 1px),
    color-mix(in srgb, var(--module-bg-2) 72%, transparent);
  background-size: 10px 10px, 10px 10px, auto;
}

.portal-icon::before,
.portal-icon::after,
.contact-symbol::before,
.contact-symbol::after {
  content: "";
  position: absolute;
  display: block;
  opacity: 1;
  transition: transform 220ms var(--motion-spring), opacity 180ms ease;
}

.portal-button:hover .portal-icon::before,
.portal-button:hover .portal-icon::after,
.contact-card:hover .contact-symbol::before,
.contact-card:hover .contact-symbol::after {
  transform: translate3d(1px, -1px, 0);
}

.document-icon::before {
  left: 13px;
  top: 9px;
  width: 17px;
  height: 24px;
  border: 2px solid currentColor;
  border-radius: 4px;
  background:
    linear-gradient(135deg, transparent 0 66%, color-mix(in srgb, currentColor 22%, transparent) 67%),
    color-mix(in srgb, var(--module-bg) 72%, transparent);
}

.document-icon::after {
  left: 17px;
  top: 17px;
  width: 12px;
  height: 9px;
  border: 0;
  border-radius: 0;
  background:
    linear-gradient(currentColor, currentColor) 0 0 / 12px 1.6px no-repeat,
    linear-gradient(currentColor, currentColor) 0 4px / 10px 1.6px no-repeat,
    linear-gradient(currentColor, currentColor) 0 8px / 8px 1.6px no-repeat;
  box-shadow: none;
  transform: none;
}

.notes-icon {
  color: var(--activation);
}

.notes-icon::before {
  left: 11px;
  top: 10px;
  width: 21px;
  height: 23px;
  border: 2px solid currentColor;
  border-radius: 5px;
  background:
    linear-gradient(90deg, currentColor 0 2px, transparent 2px) 5px 0 / 5px 100% no-repeat,
    color-mix(in srgb, var(--module-bg) 72%, transparent);
}

.notes-icon::after {
  left: 16px;
  top: 17px;
  width: 18px;
  height: 2px;
  border: 0;
  border-radius: 999px;
  background: currentColor;
  box-shadow: -2px 7px 0 color-mix(in srgb, currentColor 72%, transparent);
  transform: rotate(-24deg);
}

.contact-icon::before {
  left: 11px;
  top: 12px;
  width: 6px;
  height: 6px;
  border: 0;
  border-radius: 50%;
  background: currentColor;
  box-shadow:
    17px -2px 0 currentColor,
    21px 16px 0 color-mix(in srgb, var(--activation) 76%, currentColor),
    3px 18px 0 color-mix(in srgb, currentColor 78%, transparent);
}

.contact-icon::after {
  left: 13px;
  top: 16px;
  width: 25px;
  height: 18px;
  border: 0;
  border-radius: 0;
  background:
    linear-gradient(24deg, transparent 0 47%, currentColor 48% 53%, transparent 54%) 0 0 / 100% 100% no-repeat,
    linear-gradient(-28deg, transparent 0 48%, currentColor 49% 54%, transparent 55%) 0 0 / 100% 100% no-repeat;
  opacity: .72;
  transform: none;
}

.mail-symbol {
  color: var(--tensor);
}

.mail-symbol::before {
  left: 9px;
  top: 13px;
  width: 26px;
  height: 18px;
  border: 2px solid currentColor;
  border-radius: 5px;
  background: color-mix(in srgb, var(--module-bg) 74%, transparent);
  clip-path: none;
}

.mail-symbol::after {
  left: 11px;
  top: 15px;
  width: 22px;
  height: 14px;
  border: 0;
  border-radius: 0;
  background:
    linear-gradient(32deg, transparent 0 47%, currentColor 48% 53%, transparent 54%),
    linear-gradient(-32deg, transparent 0 47%, currentColor 48% 53%, transparent 54%);
  box-shadow: none;
  opacity: .72;
  transform: none;
}

.phone-symbol {
  color: var(--loss);
}

.phone-symbol::before {
  left: 12px;
  top: 10px;
  width: 20px;
  height: 22px;
  border: 3px solid currentColor;
  border-top-color: transparent;
  border-right-color: transparent;
  border-radius: 50%;
  background: transparent;
  transform: rotate(-37deg);
}

.phone-symbol::after {
  left: 11px;
  top: 12px;
  width: 7px;
  height: 7px;
  border: 0;
  border-radius: 3px;
  background: currentColor;
  box-shadow: 16px 16px 0 currentColor;
  transform: rotate(-37deg);
}

.discord-symbol,
.bilibili-symbol {
  color: var(--activation);
  font-size: 0;
}

.discord-symbol::before,
.bilibili-symbol::before {
  left: 9px;
  top: 10px;
  width: 26px;
  height: 22px;
  display: grid;
  place-items: center;
  border: 2px solid currentColor;
  border-radius: 8px;
  background: color-mix(in srgb, var(--module-bg) 72%, transparent);
  color: currentColor;
  font-family: var(--font-utility);
  font-size: 13px;
  font-weight: 850;
  line-height: 1;
}

.discord-symbol::before {
  content: "";
}

.bilibili-symbol {
  color: var(--loss);
}

.bilibili-symbol::before {
  content: "";
}

.discord-symbol::after,
.bilibili-symbol::after {
  left: 12px;
  top: 33px;
  width: 4px;
  height: 4px;
  border: 0;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 16px 0 0 currentColor;
}

/* SVG masks make the icons legible while preserving the site's line-system style. */
.document-icon::before,
.notes-icon::before,
.contact-icon::before,
.mail-symbol::before,
.phone-symbol::before {
  left: 9px;
  top: 9px;
  width: 26px;
  height: 26px;
  border: 0;
  border-radius: 0;
  background: currentColor;
  clip-path: none;
  transform: none;
  -webkit-mask-position: center;
  mask-position: center;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-size: contain;
  mask-size: contain;
}

.document-icon::before {
  -webkit-mask-image: url("assets/icons/document.svg");
  mask-image: url("assets/icons/document.svg");
}

.notes-icon::before {
  -webkit-mask-image: url("assets/icons/notes.svg");
  mask-image: url("assets/icons/notes.svg");
}

.contact-icon::before {
  -webkit-mask-image: url("assets/icons/network.svg");
  mask-image: url("assets/icons/network.svg");
}

.mail-symbol::before {
  -webkit-mask-image: url("assets/icons/mail.svg");
  mask-image: url("assets/icons/mail.svg");
}

.phone-symbol::before {
  -webkit-mask-image: url("assets/icons/phone.svg");
  mask-image: url("assets/icons/phone.svg");
}

.document-icon::after,
.notes-icon::after,
.contact-icon::after,
.mail-symbol::after,
.phone-symbol::after {
  left: 8px;
  top: 8px;
  width: 5px;
  height: 5px;
  border: 0;
  border-radius: 50%;
  background: currentColor;
  box-shadow:
    25px 4px 0 color-mix(in srgb, currentColor 54%, transparent),
    7px 27px 0 color-mix(in srgb, var(--activation) 64%, currentColor);
  opacity: .45;
  transform: none;
}

.mail-symbol::after {
  top: 7px;
  left: 8px;
  opacity: .34;
}

.phone-symbol::after {
  top: 8px;
  left: 8px;
  opacity: .3;
}

/* Mobile drag + final archive/icon pass. */
@media (max-width: 760px) {
  .space-viewport {
    touch-action: pan-y;
  }

  .route-curtain {
    touch-action: none;
    user-select: none;
    -webkit-user-select: none;
    cursor: grab;
  }

  .route-curtain.is-dragging,
  body.is-mobile-space-dragging .route-curtain {
    cursor: grabbing;
  }

  body.is-mobile-space-dragging {
    overscroll-behavior-x: contain;
  }
}

body.is-section-switching {
  --field-dir: 1;
}

body.is-section-switching.route-back {
  --field-dir: -1;
}

body.is-section-switching .space-panel::after {
  animation: field-drift 1120ms cubic-bezier(.16, 1, .3, 1) both;
}

body.is-section-switching .model-backdrop::before {
  animation: field-scan 1040ms cubic-bezier(.16, 1, .3, 1) both;
  opacity: .52;
}

body.is-section-switching .model-backdrop::after {
  animation: field-scan-reverse 1120ms cubic-bezier(.16, 1, .3, 1) both;
  opacity: .46;
}

@keyframes field-drift {
  0% {
    transform: translate3d(calc(var(--field-dir) * -28vw), 0, 0) scale(1.01);
    filter: saturate(1.08);
  }

  54% {
    transform: translate3d(calc(var(--field-dir) * 34vw), -8px, 0) scale(1.035);
    filter: saturate(1.28);
  }

  100% {
    transform: translate3d(0, 0, 0) scale(1);
    filter: saturate(1);
  }
}

@keyframes field-scan {
  0% {
    transform: translate3d(calc(var(--field-dir) * -38vw), 0, 0);
  }

  100% {
    transform: translate3d(calc(var(--field-dir) * 38vw), 0, 0);
  }
}

@keyframes field-scan-reverse {
  0% {
    transform: translate3d(calc(var(--field-dir) * 42vw), 0, 0) rotate(-9deg);
  }

  100% {
    transform: translate3d(calc(var(--field-dir) * -42vw), 0, 0) rotate(-9deg);
  }
}

.archive-list {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: stretch;
}

.archive-item {
  min-height: 100%;
  display: flex;
}

.archive-item a,
.archive-item.card-green a,
.archive-item.card-coral a,
.archive-item.card-blue a {
  width: 100%;
  min-height: 100%;
  grid-template-columns: 1fr;
  grid-template-rows: 132px auto minmax(3.1em, auto) 1fr auto;
  align-items: start;
  gap: 12px;
  padding: 18px;
}

.archive-item .post-visual {
  width: 100%;
  height: 132px;
  min-height: 0;
}

.archive-item .tag {
  grid-column: 1;
  grid-row: 2;
  justify-self: start;
}

.archive-item h2 {
  grid-column: 1;
  grid-row: 3;
  margin: 0;
  font-size: clamp(1.06rem, 1.55vw, 1.34rem);
  line-height: 1.18;
}

.archive-item p {
  grid-column: 1;
  grid-row: 4;
  margin: 0;
  font-size: .92rem;
  line-height: 1.58;
}

.archive-item time {
  grid-column: 1;
  grid-row: 5;
  justify-self: start;
  align-self: end;
  margin-top: 6px;
}

@media (max-width: 960px) {
  .archive-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .archive-item a,
  .archive-item.card-green a,
  .archive-item.card-coral a,
  .archive-item.card-blue a {
    padding: 16px;
  }
}

@media (max-width: 760px) {
  .archive-list {
    grid-template-columns: 1fr;
  }

  .archive-item a,
  .archive-item.card-green a,
  .archive-item.card-coral a,
  .archive-item.card-blue a {
    grid-template-rows: 118px auto auto auto auto;
    gap: 11px;
    padding: 16px;
  }

  .archive-item .post-visual {
    height: 118px;
  }

  .archive-item h2 {
    font-size: clamp(1.14rem, 5.7vw, 1.5rem);
  }
}

.discord-symbol {
  color: var(--latent);
}

.bilibili-symbol {
  color: var(--loss);
}

.github-symbol {
  color: color-mix(in srgb, var(--ink) 82%, var(--tensor));
}

.discord-symbol::before,
.bilibili-symbol::before,
.github-symbol::before {
  content: "";
  left: 9px;
  top: 9px;
  width: 26px;
  height: 26px;
  display: block;
  border: 0;
  border-radius: 0;
  background: currentColor;
  font-size: 0;
  -webkit-mask-position: center;
  mask-position: center;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-size: contain;
  mask-size: contain;
  transform: none;
}

.discord-symbol::before {
  -webkit-mask-image: url("assets/icons/discord.svg");
  mask-image: url("assets/icons/discord.svg");
}

.bilibili-symbol::before {
  -webkit-mask-image: url("assets/icons/bilibili.svg");
  mask-image: url("assets/icons/bilibili.svg");
}

.github-symbol::before {
  -webkit-mask-image: url("assets/icons/github.svg");
  mask-image: url("assets/icons/github.svg");
}

.discord-symbol::after,
.bilibili-symbol::after,
.github-symbol::after {
  content: "";
  left: 8px;
  top: 8px;
  width: 5px;
  height: 5px;
  border: 0;
  border-radius: 50%;
  background: currentColor;
  box-shadow:
    25px 4px 0 color-mix(in srgb, currentColor 54%, transparent),
    7px 27px 0 color-mix(in srgb, var(--activation) 64%, currentColor);
  opacity: .34;
  transform: none;
}

/* Blog archive stays landscape on desktop: equal-height rows, aligned metadata. */
@media (min-width: 761px) {
  .archive-list {
    grid-template-columns: 1fr;
    grid-auto-rows: 244px;
    gap: 16px;
  }

  .archive-item {
    height: 100%;
    min-height: 0;
  }

  .archive-item a,
  .archive-item.card-green a,
  .archive-item.card-coral a,
  .archive-item.card-blue a {
    grid-template-columns: minmax(180px, 230px) minmax(0, 1fr) auto;
    grid-template-rows: auto auto minmax(0, 1fr) auto;
    align-items: start;
    gap: 10px 22px;
    min-height: 0;
    height: 100%;
    padding: 18px 20px;
  }

  .archive-item .post-visual {
    grid-column: 1;
    grid-row: 1 / -1;
    width: 100%;
    height: 100%;
    min-height: 184px;
    align-self: stretch;
  }

  .archive-item .tag {
    grid-column: 2;
    grid-row: 1;
  }

  .archive-item h2 {
    grid-column: 2 / 4;
    grid-row: 2;
    max-width: 740px;
    font-size: clamp(1.34rem, 2.15vw, 2rem);
    line-height: 1.14;
    display: -webkit-box;
    overflow: hidden;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
  }

  .archive-item p {
    grid-column: 2 / 4;
    grid-row: 3;
    max-width: 720px;
    font-size: .98rem;
    line-height: 1.64;
    display: -webkit-box;
    overflow: hidden;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
  }

  .archive-item time {
    grid-column: 3;
    grid-row: 1;
    justify-self: end;
    align-self: center;
    margin-top: 0;
  }
}

/* Home field v5: make route rails travel clearly and fill the desktop home canvas. */
body {
  --from-space-index: var(--space-index);
  --target-space-index: var(--space-index);
  --field-dir: 1;
}

body::before {
  opacity: .98;
  background:
    linear-gradient(90deg,
      transparent 0 5.4%,
      color-mix(in srgb, var(--tensor) 34%, transparent) 5.5% 6.25%,
      color-mix(in srgb, var(--activation) 18%, transparent) 6.25% 6.55%,
      transparent 6.7% 25%,
      transparent 25% 30.4%,
      color-mix(in srgb, var(--activation) 34%, transparent) 30.5% 31.25%,
      color-mix(in srgb, var(--tensor) 16%, transparent) 31.25% 31.58%,
      transparent 31.7% 50%,
      transparent 50% 55.4%,
      color-mix(in srgb, var(--latent) 34%, transparent) 55.5% 56.25%,
      color-mix(in srgb, var(--tensor) 16%, transparent) 56.25% 56.58%,
      transparent 56.7% 75%,
      transparent 75% 80.4%,
      color-mix(in srgb, var(--loss) 30%, transparent) 80.5% 81.25%,
      color-mix(in srgb, var(--activation) 15%, transparent) 81.25% 81.58%,
      transparent 81.7% 100%),
    linear-gradient(116deg,
      transparent 0 11%,
      color-mix(in srgb, var(--tensor) 20%, transparent) 11.05% 11.58%,
      transparent 11.66% 35%,
      color-mix(in srgb, var(--activation) 16%, transparent) 35.05% 35.45%,
      transparent 35.54% 64%,
      color-mix(in srgb, var(--latent) 16%, transparent) 64.05% 64.5%,
      transparent 64.6% 100%),
    linear-gradient(28deg,
      transparent 0 18%,
      color-mix(in srgb, var(--loss) 13%, transparent) 18.1% 18.46%,
      transparent 18.58% 51%,
      color-mix(in srgb, var(--tensor) 12%, transparent) 51.08% 51.44%,
      transparent 51.56% 100%),
    repeating-linear-gradient(90deg, transparent 0 17px, color-mix(in srgb, var(--ink) 4%, transparent) 18px 19px),
    repeating-linear-gradient(0deg, transparent 0 17px, color-mix(in srgb, var(--ink) 3%, transparent) 18px 19px),
    linear-gradient(90deg,
      color-mix(in srgb, var(--tensor) 5%, var(--page)) 0 25%,
      color-mix(in srgb, var(--activation) 4%, var(--page)) 25% 50%,
      color-mix(in srgb, var(--latent) 5%, var(--page)) 50% 75%,
      color-mix(in srgb, var(--loss) 4%, var(--page)) 75% 100%);
  transform: translate3d(calc(var(--space-index) * -100vw), 0, 0) scale(var(--space-scale));
}

body::after {
  opacity: .86;
  transform: translate3d(calc(var(--space-index) * -112vw), 0, 0);
}

body.is-section-switching::before {
  animation: route-rails-primary 1180ms cubic-bezier(.14, .88, .22, 1) both;
}

body.is-section-switching::after {
  animation: route-rails-secondary 1220ms cubic-bezier(.14, .88, .22, 1) both;
}

body.is-section-switching .model-backdrop::before {
  height: 3px;
  opacity: .78;
  animation: model-rail-surge 1120ms cubic-bezier(.14, .88, .22, 1) both;
}

body.is-section-switching .model-backdrop::after {
  height: 3px;
  opacity: .62;
  animation: model-rail-surge-reverse 1180ms cubic-bezier(.14, .88, .22, 1) both;
}

@keyframes route-rails-primary {
  0% {
    transform: translate3d(calc(var(--from-space-index) * -100vw), 0, 0) scale(1);
    filter: saturate(1);
  }

  58% {
    transform: translate3d(calc((var(--target-space-index) * -100vw) - (var(--field-dir) * 34vw)), 0, 0) scale(1.018);
    filter: saturate(1.22);
  }

  100% {
    transform: translate3d(calc(var(--target-space-index) * -100vw), 0, 0) scale(var(--space-scale));
    filter: saturate(1);
  }
}

@keyframes route-rails-secondary {
  0% {
    transform: translate3d(calc(var(--from-space-index) * -112vw), 0, 0);
  }

  54% {
    transform: translate3d(calc((var(--target-space-index) * -112vw) - (var(--field-dir) * 48vw)), 0, 0);
  }

  100% {
    transform: translate3d(calc(var(--target-space-index) * -112vw), 0, 0);
  }
}

@keyframes model-rail-surge {
  0% {
    transform: translate3d(calc(var(--field-dir) * -64vw), 0, 0);
  }

  62% {
    transform: translate3d(calc(var(--field-dir) * 42vw), -6px, 0);
  }

  100% {
    transform: translate3d(0, 0, 0);
  }
}

@keyframes model-rail-surge-reverse {
  0% {
    transform: translate3d(calc(var(--field-dir) * 70vw), 0, 0) rotate(-9deg);
  }

  62% {
    transform: translate3d(calc(var(--field-dir) * -46vw), 6px, 0) rotate(-9deg);
  }

  100% {
    transform: translate3d(0, 0, 0) rotate(-9deg);
  }
}

@media (min-width: 961px) {
  .home-panel-inner {
    display: grid;
    align-items: stretch;
  }

  .hero-stage {
    width: min(1320px, calc(100% - 56px));
    min-height: calc(100svh - 116px);
    display: grid;
    grid-template-columns: minmax(0, 1.14fr) minmax(330px, .68fr);
    gap: clamp(24px, 4vw, 56px);
    align-items: start;
    margin-inline: auto;
    padding: clamp(42px, 7vh, 72px) 0 clamp(24px, 4vh, 44px);
  }

  .intro-glass {
    max-width: none;
    padding: clamp(28px, 3.4vw, 46px);
  }

  .intro-glass h1 {
    max-width: 760px;
    font-size: clamp(2.75rem, 4.4vw, 4.4rem);
    line-height: 1;
  }

  .intro-copy {
    max-width: 680px;
    margin-bottom: 34px;
    font-size: clamp(1.04rem, 1.12vw, 1.2rem);
  }

  .portal-actions {
    grid-template-columns: repeat(3, minmax(148px, 1fr));
  }

  .portal-button {
    min-height: 88px;
    padding: 14px;
  }
}

.home-side-stack {
  display: grid;
  gap: 14px;
  align-self: start;
}

.home-side-stack .quick-panel {
  width: 100%;
  min-width: 0;
}

.home-model-card {
  position: relative;
  min-height: 248px;
  padding: 18px;
  overflow: hidden;
}

.home-model-card::before {
  content: "";
  position: absolute;
  inset: 16px;
  pointer-events: none;
  border: 1px solid color-mix(in srgb, var(--tensor) 18%, transparent);
  border-radius: 8px;
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--tensor) 9%, transparent) 1px, transparent 1px),
    linear-gradient(color-mix(in srgb, var(--tensor) 7%, transparent) 1px, transparent 1px);
  background-size: 20px 20px;
  opacity: .72;
}

.home-model-head,
.home-model-flow,
.home-attention-grid {
  position: relative;
  z-index: 1;
}

.home-model-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
  font-family: var(--font-utility, "SFMono-Regular", Consolas, monospace);
}

.home-model-head span {
  color: var(--muted);
  font-size: .72rem;
  font-weight: 800;
  text-transform: uppercase;
}

.home-model-head strong {
  color: var(--tensor);
  font-size: .86rem;
}

.home-attention-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 7px;
  min-height: 128px;
}

.home-attention-grid span {
  border: 1px solid color-mix(in srgb, var(--tensor) 15%, var(--hairline));
  border-radius: 6px;
  background: color-mix(in srgb, var(--tensor) 8%, transparent);
  box-shadow: inset 0 1px 0 color-mix(in srgb, white 44%, transparent);
}

.home-attention-grid span:nth-child(3n + 1) {
  background: color-mix(in srgb, var(--tensor) 20%, transparent);
}

.home-attention-grid span:nth-child(5),
.home-attention-grid span:nth-child(10),
.home-attention-grid span:nth-child(15) {
  background: color-mix(in srgb, var(--activation) 28%, transparent);
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, white 46%, transparent),
    0 0 24px color-mix(in srgb, var(--activation) 18%, transparent);
}

.home-attention-grid span:nth-child(8),
.home-attention-grid span:nth-child(12) {
  background: color-mix(in srgb, var(--loss) 20%, transparent);
}

.home-model-flow {
  display: grid;
  grid-template-columns: auto 1fr auto 1fr auto;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  color: var(--muted);
  font-family: var(--font-utility, "SFMono-Regular", Consolas, monospace);
  font-size: .68rem;
  font-weight: 800;
  text-transform: uppercase;
}

.home-model-flow i {
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--tensor), var(--activation));
}

.home-signal-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  color: color-mix(in srgb, var(--ink) 68%, var(--muted));
  font-family: var(--font-utility, "SFMono-Regular", Consolas, monospace);
  font-size: .66rem;
  font-weight: 800;
  text-transform: uppercase;
}

.home-signal-strip span {
  min-width: 0;
  padding: 9px 8px;
  border: 1px solid color-mix(in srgb, var(--tensor) 18%, var(--hairline));
  border-radius: 8px;
  background: color-mix(in srgb, var(--module-bg-2) 72%, transparent);
  text-align: center;
  white-space: nowrap;
}

@media (max-width: 960px) {
  .home-side-stack {
    grid-template-columns: 1fr;
  }

  .home-model-card,
  .home-signal-strip {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  body.is-section-switching::before,
  body.is-section-switching::after {
    animation: none;
  }
}

/* Home grid v6: original homepage, sized from viewport blocks in fullscreen desktop. */
@media (min-width: 961px) {
  .home-panel-inner {
    display: grid;
  }

  .hero-stage {
    --home-grid-unit: clamp(86px, calc((100svh - 168px) / 6), 136px);
    width: min(1320px, calc(100% - 56px));
    min-height: 0;
    height: calc(100svh - 116px);
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    grid-template-rows: repeat(6, minmax(var(--home-grid-unit), 1fr));
    gap: clamp(14px, 1.4vw, 22px);
    align-items: stretch;
    margin-inline: auto;
    padding: clamp(32px, 5vh, 56px) 0 clamp(20px, 3vh, 34px);
  }

  .intro-glass {
    grid-column: 1 / 9;
    grid-row: 1 / 7;
    max-width: none;
    min-height: 0;
    height: 100%;
    display: grid;
    grid-template-rows: auto auto auto auto;
    align-content: stretch;
    gap: clamp(16px, 2.1vh, 24px);
    padding: clamp(28px, 3.2vw, 48px);
  }

  .intro-glass h1 {
    max-width: 760px;
    margin-bottom: 0;
    font-size: clamp(2.85rem, 4.65vw, 4.8rem);
    line-height: .99;
  }

  .intro-copy {
    max-width: 720px;
    margin: 0;
    align-self: start;
    font-size: clamp(1.02rem, 1.08vw, 1.18rem);
  }

  .portal-actions {
    align-self: start;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(12px, 1.2vw, 18px);
    margin-top: 0;
    padding-top: 24px;
  }

  .portal-button {
    min-height: clamp(92px, var(--home-grid-unit), 132px);
    padding: clamp(14px, 1.35vw, 20px);
  }

  .quick-panel {
    grid-column: 9 / 13;
    grid-row: 1 / 7;
    width: 100%;
    min-width: 0;
    height: 100%;
    align-self: stretch;
    display: grid;
    grid-template-rows: auto repeat(3, max-content) minmax(0, 1fr);
    align-content: start;
    gap: clamp(12px, 1.5vh, 18px);
    padding: clamp(18px, 2.2vw, 30px);
  }

  .quick-panel::after {
    content: "";
    position: relative;
    right: auto;
    bottom: auto;
    z-index: 0;
    display: block;
    width: 100%;
    min-height: 96px;
    margin-top: clamp(6px, 1.2vh, 14px);
    border: 1px solid color-mix(in srgb, var(--tensor) 13%, transparent);
    border-radius: 8px;
    background:
      radial-gradient(circle at 18% 22%, color-mix(in srgb, var(--tensor) 46%, transparent) 0 4px, transparent 5px),
      radial-gradient(circle at 62% 48%, color-mix(in srgb, var(--activation) 38%, transparent) 0 4px, transparent 5px),
      radial-gradient(circle at 84% 74%, color-mix(in srgb, var(--latent) 34%, transparent) 0 4px, transparent 5px),
      linear-gradient(24deg, transparent 0 30%, color-mix(in srgb, var(--tensor) 12%, transparent) 30.1% 30.35%, transparent 30.45% 100%),
      linear-gradient(148deg, transparent 0 42%, color-mix(in srgb, var(--activation) 10%, transparent) 42.1% 42.35%, transparent 42.45% 100%),
      linear-gradient(90deg, color-mix(in srgb, var(--tensor) 7%, transparent) 1px, transparent 1px),
      color-mix(in srgb, var(--module-bg-2) 46%, transparent);
    background-size: auto, auto, auto, auto, auto, 22px 100%, auto;
    opacity: .82;
  }

  .quick-row {
    min-height: 0;
    display: grid;
    align-content: center;
    padding: clamp(15px, 1.75vh, 20px) clamp(16px, 1.7vw, 24px);
    border: 1px solid color-mix(in srgb, var(--tensor) 18%, var(--hairline));
    border-radius: 8px;
    background:
      linear-gradient(90deg, color-mix(in srgb, var(--tensor) 7%, transparent) 1px, transparent 1px),
      color-mix(in srgb, var(--module-bg-2) 58%, transparent);
    background-size: 22px 100%, auto;
  }

  .quick-row + .quick-row {
    margin-top: 0;
  }

  .quick-row strong {
    font-size: clamp(.92rem, 1vw, 1.06rem);
  }
}

@media (min-width: 1500px) and (min-height: 860px) {
  .hero-stage {
    width: min(1380px, calc(100% - 72px));
  }
}

@media (max-width: 960px) {
  .quick-panel {
    display: grid;
  }
}

/* Home quick card v7: keep the right profile as the original compact card. */
@media (min-width: 961px) {
  .quick-panel {
    grid-column: 9 / 13;
    grid-row: 2 / 5;
    width: 100%;
    height: auto;
    min-height: 344px;
    align-self: center;
    display: grid;
    grid-template-rows: auto repeat(3, auto);
    align-content: start;
    gap: 14px;
    padding: clamp(18px, 2vw, 26px);
  }

  .quick-panel::after {
    content: "profile vector";
    position: absolute;
    right: 14px;
    bottom: 12px;
    z-index: 1;
    display: block;
    width: auto;
    min-height: 0;
    margin: 0;
    border: 0;
    border-radius: 0;
    background: none;
    color: color-mix(in srgb, var(--tensor) 42%, transparent);
    font: 800 0.66rem/1 var(--font-utility, "SFMono-Regular", Consolas, monospace);
    opacity: 1;
  }

  .quick-row {
    padding: 14px 16px;
    background:
      linear-gradient(90deg, color-mix(in srgb, var(--tensor) 6%, transparent) 1px, transparent 1px),
      color-mix(in srgb, var(--module-bg-2) 58%, transparent);
    background-size: 22px 100%, auto;
  }
}

/* Home/background v8: synchronized section field and balanced desktop home grid. */
body {
  --field-ease: cubic-bezier(.18, .86, .24, 1);
}

body::before,
body::after {
  transition:
    transform 980ms var(--field-ease),
    opacity 320ms ease,
    filter 320ms ease;
}

body::before {
  opacity: .86;
  background:
    linear-gradient(90deg,
      transparent 0 3.8%,
      color-mix(in srgb, var(--tensor) 24%, transparent) 3.9% 4.42%,
      color-mix(in srgb, var(--activation) 12%, transparent) 4.42% 4.58%,
      transparent 4.68% 17.2%,
      color-mix(in srgb, var(--tensor) 16%, transparent) 17.32% 18.04%,
      transparent 18.18% 25%,
      transparent 25% 30.2%,
      color-mix(in srgb, var(--activation) 23%, transparent) 30.34% 30.94%,
      color-mix(in srgb, var(--tensor) 10%, transparent) 30.94% 31.1%,
      transparent 31.22% 43.3%,
      color-mix(in srgb, var(--activation) 15%, transparent) 43.42% 44.06%,
      transparent 44.18% 50%,
      transparent 50% 55.7%,
      color-mix(in srgb, var(--latent) 23%, transparent) 55.84% 56.45%,
      color-mix(in srgb, var(--tensor) 10%, transparent) 56.45% 56.62%,
      transparent 56.74% 68.6%,
      color-mix(in srgb, var(--latent) 14%, transparent) 68.72% 69.38%,
      transparent 69.5% 75%,
      transparent 75% 80.8%,
      color-mix(in srgb, var(--loss) 20%, transparent) 80.94% 81.54%,
      color-mix(in srgb, var(--activation) 9%, transparent) 81.54% 81.7%,
      transparent 81.84% 93.2%,
      color-mix(in srgb, var(--loss) 13%, transparent) 93.34% 94.02%,
      transparent 94.16% 100%),
    linear-gradient(116deg,
      transparent 0 7.5%,
      color-mix(in srgb, var(--ink) 10%, transparent) 7.58% 7.72%,
      transparent 7.84% 33.4%,
      color-mix(in srgb, var(--ink) 9%, transparent) 33.48% 33.62%,
      transparent 33.76% 58.9%,
      color-mix(in srgb, var(--ink) 8%, transparent) 58.98% 59.12%,
      transparent 59.26% 84.2%,
      color-mix(in srgb, var(--ink) 8%, transparent) 84.28% 84.42%,
      transparent 84.56% 100%),
    linear-gradient(24deg,
      transparent 0 12.6%,
      color-mix(in srgb, var(--tensor) 9%, transparent) 12.68% 12.86%,
      transparent 13% 37.6%,
      color-mix(in srgb, var(--activation) 8%, transparent) 37.68% 37.86%,
      transparent 38% 62.6%,
      color-mix(in srgb, var(--latent) 8%, transparent) 62.68% 62.86%,
      transparent 63% 87.6%,
      color-mix(in srgb, var(--loss) 7%, transparent) 87.68% 87.86%,
      transparent 88% 100%),
    linear-gradient(90deg,
      color-mix(in srgb, var(--tensor) 4%, var(--page)) 0 25%,
      color-mix(in srgb, var(--activation) 3.5%, var(--page)) 25% 50%,
      color-mix(in srgb, var(--latent) 4%, var(--page)) 50% 75%,
      color-mix(in srgb, var(--loss) 3.5%, var(--page)) 75% 100%);
  transform: translate3d(calc(var(--space-index) * -100vw), 0, 0);
}

body::after {
  opacity: .5;
  background:
    radial-gradient(circle at 8% 24%, color-mix(in srgb, var(--tensor) 42%, transparent) 0 3px, transparent 4px),
    radial-gradient(circle at 14% 42%, color-mix(in srgb, var(--activation) 30%, transparent) 0 3px, transparent 4px),
    radial-gradient(circle at 20% 31%, color-mix(in srgb, var(--ink) 16%, transparent) 0 2px, transparent 3px),
    radial-gradient(circle at 32% 35%, color-mix(in srgb, var(--activation) 40%, transparent) 0 3px, transparent 4px),
    radial-gradient(circle at 39% 56%, color-mix(in srgb, var(--tensor) 28%, transparent) 0 3px, transparent 4px),
    radial-gradient(circle at 45% 28%, color-mix(in srgb, var(--ink) 14%, transparent) 0 2px, transparent 3px),
    radial-gradient(circle at 57% 27%, color-mix(in srgb, var(--latent) 42%, transparent) 0 3px, transparent 4px),
    radial-gradient(circle at 64% 48%, color-mix(in srgb, var(--tensor) 26%, transparent) 0 3px, transparent 4px),
    radial-gradient(circle at 70% 36%, color-mix(in srgb, var(--ink) 13%, transparent) 0 2px, transparent 3px),
    radial-gradient(circle at 82% 33%, color-mix(in srgb, var(--loss) 38%, transparent) 0 3px, transparent 4px),
    radial-gradient(circle at 88% 55%, color-mix(in srgb, var(--activation) 25%, transparent) 0 3px, transparent 4px),
    radial-gradient(circle at 94% 41%, color-mix(in srgb, var(--ink) 13%, transparent) 0 2px, transparent 3px),
    repeating-linear-gradient(90deg, transparent 0 74px, color-mix(in srgb, var(--ink) 3.4%, transparent) 75px 76px, transparent 77px 148px),
    repeating-linear-gradient(0deg, transparent 0 74px, color-mix(in srgb, var(--ink) 2.7%, transparent) 75px 76px, transparent 77px 148px);
  transform: translate3d(calc(var(--space-index) * -100vw), 0, 0);
}

body.is-section-switching::before,
body.is-section-switching::after,
body.is-section-switching .space-panel::after,
body.is-section-switching .model-backdrop::before,
body.is-section-switching .model-backdrop::after {
  animation: none !important;
}

.space-panel {
  background:
    radial-gradient(ellipse at 18% 0%, color-mix(in srgb, var(--tensor) 5%, transparent), transparent 34%),
    radial-gradient(ellipse at 82% 68%, color-mix(in srgb, var(--activation) 4%, transparent), transparent 38%);
}

.space-panel::after {
  opacity: .22;
  background:
    linear-gradient(135deg, transparent 0 28%, color-mix(in srgb, var(--tensor) 11%, transparent) 28.08% 28.2%, transparent 28.34% 100%),
    linear-gradient(42deg, transparent 0 44%, color-mix(in srgb, var(--activation) 8%, transparent) 44.08% 44.18%, transparent 44.32% 100%),
    radial-gradient(circle at 24% 36%, color-mix(in srgb, var(--tensor) 22%, transparent) 0 3px, transparent 4px),
    radial-gradient(circle at 58% 52%, color-mix(in srgb, var(--activation) 18%, transparent) 0 3px, transparent 4px),
    radial-gradient(circle at 78% 44%, color-mix(in srgb, var(--latent) 16%, transparent) 0 3px, transparent 4px);
  transform: none !important;
}

.model-backdrop {
  inset: 76px clamp(20px, 4.5vw, 76px) 0;
  opacity: .46;
}

.model-backdrop::before,
.model-backdrop::after {
  left: 10%;
  right: 9%;
  height: 2px;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--tensor) 34%, transparent), color-mix(in srgb, var(--activation) 24%, transparent), transparent);
  transform: none !important;
  opacity: .5;
}

.model-backdrop::before {
  top: 38%;
}

.model-backdrop::after {
  left: 18%;
  right: 16%;
  top: 61%;
  opacity: .34;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--latent) 26%, transparent), color-mix(in srgb, var(--loss) 18%, transparent), transparent);
}

body.is-section-switching .model-backdrop::before,
body.is-section-switching .model-backdrop::after {
  opacity: .58;
}

@media (min-width: 961px) {
  .home-panel-inner {
    min-height: calc(100svh - 76px);
    display: grid;
    align-items: center;
  }

  .hero-stage {
    --home-block: clamp(78px, calc((100svh - 168px) / 6), 124px);
    width: min(1420px, calc(100% - 64px));
    height: calc(100svh - 94px);
    min-height: 650px;
    max-height: 920px;
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    grid-template-rows: repeat(6, minmax(var(--home-block), 1fr));
    gap: clamp(14px, 1.28vw, 22px);
    align-items: stretch;
    margin-inline: auto;
    padding: clamp(18px, 3vh, 32px) 0 clamp(18px, 3vh, 32px);
  }

  .geo-scene {
    inset: 0;
    z-index: 0;
    opacity: .62;
  }

  .geo-ring,
  .geo-panel,
  .geo-axis {
    border-radius: 8px;
    opacity: .28;
  }

  .ring-one {
    width: min(34vw, 470px);
    height: min(18vw, 230px);
    right: 3%;
    top: 8%;
  }

  .ring-two {
    width: 250px;
    height: 120px;
    left: auto;
    right: 14%;
    bottom: 12%;
  }

  .panel-one {
    right: 9%;
    top: 39%;
    width: 220px;
    height: 128px;
    background:
      linear-gradient(90deg, color-mix(in srgb, var(--tensor) 8%, transparent) 1px, transparent 1px),
      linear-gradient(color-mix(in srgb, var(--tensor) 6%, transparent) 1px, transparent 1px),
      color-mix(in srgb, var(--module-bg-2) 34%, transparent);
    background-size: 18px 18px, 18px 18px, auto;
    backdrop-filter: none;
  }

  .panel-two,
  .axis-one,
  .axis-two {
    display: none;
  }

  .intro-glass {
    grid-column: 1 / 9;
    grid-row: 1 / 7;
    height: 100%;
    max-width: none;
    min-height: 0;
    display: grid;
    grid-template-rows: auto auto minmax(0, 1fr) auto;
    align-content: stretch;
    gap: clamp(14px, 2vh, 22px);
    padding: clamp(30px, 3.3vw, 52px);
  }

  .intro-glass h1 {
    max-width: 820px;
    font-size: clamp(3rem, 4.9vw, 5.25rem);
    line-height: .98;
  }

  .research-identity {
    align-self: start;
  }

  .intro-copy {
    max-width: 720px;
    margin: 0;
    align-self: start;
    font-size: clamp(1.02rem, 1.04vw, 1.18rem);
    line-height: 1.72;
  }

  .portal-actions {
    align-self: end;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(12px, 1.15vw, 18px);
    margin-top: clamp(12px, 2vh, 24px);
    padding-top: 0;
  }

  .portal-button {
    min-height: clamp(94px, calc(var(--home-block) * 1.05), 126px);
    align-content: center;
    padding: clamp(14px, 1.25vw, 18px);
  }

  .quick-panel {
    grid-column: 9 / 13;
    grid-row: 2 / 5;
    width: 100%;
    height: auto;
    min-height: clamp(306px, 34vh, 372px);
    max-height: 392px;
    align-self: center;
    display: grid;
    grid-template-rows: auto repeat(3, auto);
    align-content: start;
    gap: 14px;
    padding: clamp(18px, 2vw, 26px);
  }

  .quick-row {
    min-height: 78px;
    align-content: center;
  }
}

@media (min-width: 1500px) and (min-height: 900px) {
  .hero-stage {
    width: min(1480px, calc(100% - 88px));
  }
}

@media (max-width: 960px) {
  body::before,
  body::after {
    width: 400vw;
  }

  .space-panel::after {
    opacity: .16;
  }

  .model-backdrop {
    opacity: .28;
  }
}

@media (prefers-reduced-motion: reduce) {
  body::before,
  body::after {
    transition: none;
  }
}

@media (max-width: 680px) {
  .hero-stage {
    width: min(100%, calc(100vw - 24px));
    gap: 16px;
    padding-top: 28px;
  }

  .intro-glass,
  .quick-panel {
    width: 100%;
    max-width: 100%;
    border-radius: 12px;
  }

  .intro-glass {
    padding: 18px 0;
  }

  .intro-glass h1 {
    max-width: 100%;
    padding: 18px 16px;
    font-size: clamp(2.02rem, 10.6vw, 2.72rem);
    line-height: 1.04;
    overflow-wrap: anywhere;
    word-break: normal;
  }

  .intro-glass > h1::before {
    margin-bottom: 10px;
    font-size: .64rem;
  }

  .research-identity,
  .intro-copy,
  .portal-actions {
    margin-inline: 0;
  }

  .school-name,
  .study-line,
  .identity-rule {
    margin-left: 0;
  }

  .qkv-identity,
  .intro-copy {
    border-radius: 10px;
  }

  .qkv-token {
    min-width: 0;
    width: 100%;
  }

  .portal-button {
    border-radius: 10px;
  }
}

/* Field motion pass: keep the original Transformer/QKV language, but make the
   decorative field lighter and drive it from the section transition spring. */
body {
  --field-space: var(--initial-space-index, 0);
  --field-x: 0px;
  --field-y: 0px;
  --field-depth-x: 0px;
  --field-depth-y: 0px;
  --field-panel-x: 0px;
  --field-panel-y: 0px;
  --field-line-a-x: 0px;
  --field-line-a-y: 0px;
  --field-line-b-x: 0px;
  --field-line-b-y: 0px;
  --field-tilt: 0deg;
  --field-scale: 1;
  --field-phase: 0px;
  --field-energy: 0;
}

body::before,
body::after {
  inset: 0 auto 0 0;
  width: 400vw;
  height: 100svh;
  filter: none !important;
  will-change: transform, opacity;
  transition:
    transform 2600ms cubic-bezier(.16, .78, .18, 1),
    opacity 900ms ease;
}

body::before {
  opacity: calc(.64 + (var(--field-energy) * .12));
  background:
    linear-gradient(90deg,
      transparent 0 5.8%,
      color-mix(in srgb, var(--tensor) 32%, transparent) 5.9% 5.935%,
      color-mix(in srgb, var(--activation) 14%, transparent) 5.935% 5.955%,
      transparent 6.06% 24.5%,
      color-mix(in srgb, var(--activation) 29%, transparent) 24.64% 24.675%,
      transparent 24.8% 50%,
      transparent 50% 57.4%,
      color-mix(in srgb, var(--latent) 30%, transparent) 57.54% 57.575%,
      color-mix(in srgb, var(--tensor) 12%, transparent) 57.575% 57.595%,
      transparent 57.72% 75%,
      transparent 75% 84.2%,
      color-mix(in srgb, var(--loss) 27%, transparent) 84.36% 84.395%,
      transparent 84.52% 100%),
    linear-gradient(117deg,
      transparent 0 12%,
      color-mix(in srgb, var(--ink) 9%, transparent) 12.06% 12.13%,
      transparent 12.24% 37%,
      color-mix(in srgb, var(--tensor) 12%, transparent) 37.07% 37.16%,
      transparent 37.28% 65%,
      color-mix(in srgb, var(--activation) 10%, transparent) 65.06% 65.14%,
      transparent 65.26% 100%),
    linear-gradient(24deg,
      transparent 0 18.5%,
      color-mix(in srgb, var(--tensor) 10%, transparent) 18.56% 18.65%,
      transparent 18.78% 53.5%,
      color-mix(in srgb, var(--latent) 10%, transparent) 53.56% 53.66%,
      transparent 53.78% 88%,
      color-mix(in srgb, var(--loss) 8%, transparent) 88.06% 88.15%,
      transparent 88.28% 100%),
    linear-gradient(90deg,
      color-mix(in srgb, var(--tensor) 3.8%, var(--page)) 0 25%,
      color-mix(in srgb, var(--activation) 3.5%, var(--page)) 25% 50%,
      color-mix(in srgb, var(--latent) 3.8%, var(--page)) 50% 75%,
      color-mix(in srgb, var(--loss) 3.3%, var(--page)) 75% 100%);
  transform:
    translate3d(calc((var(--field-space) * -100vw) + var(--field-x)), var(--field-y), 0)
    rotate(var(--field-tilt))
    scale(var(--field-scale));
}

body::after {
  opacity: calc(.42 + (var(--field-energy) * .08));
  background:
    radial-gradient(circle at 7% 27%, color-mix(in srgb, var(--tensor) 48%, transparent) 0 1.8px, transparent 2.6px),
    radial-gradient(circle at 18% 43%, color-mix(in srgb, var(--activation) 34%, transparent) 0 1.55px, transparent 2.35px),
    radial-gradient(circle at 31% 35%, color-mix(in srgb, var(--activation) 44%, transparent) 0 1.65px, transparent 2.45px),
    radial-gradient(circle at 43% 58%, color-mix(in srgb, var(--tensor) 32%, transparent) 0 1.55px, transparent 2.35px),
    radial-gradient(circle at 58% 29%, color-mix(in srgb, var(--latent) 44%, transparent) 0 1.65px, transparent 2.45px),
    radial-gradient(circle at 67% 50%, color-mix(in srgb, var(--tensor) 30%, transparent) 0 1.55px, transparent 2.35px),
    radial-gradient(circle at 83% 36%, color-mix(in srgb, var(--loss) 42%, transparent) 0 1.65px, transparent 2.45px),
    radial-gradient(circle at 93% 55%, color-mix(in srgb, var(--activation) 28%, transparent) 0 1.45px, transparent 2.25px),
    repeating-linear-gradient(90deg, transparent 0 86px, color-mix(in srgb, var(--ink) 3.4%, transparent) 87px 88px, transparent 89px 172px),
    repeating-linear-gradient(0deg, transparent 0 86px, color-mix(in srgb, var(--ink) 2.8%, transparent) 87px 88px, transparent 89px 172px);
  transform: translate3d(calc((var(--field-space) * -92vw) + var(--field-depth-x)), var(--field-depth-y), 0);
}

.space-panel::before,
.intro-glass > h1::before,
.intro-copy::before,
.portal-actions::before,
.portal-actions::after,
.quick-panel::before,
.quick-panel::after,
.topic-panel::before,
.topic-panel::after,
.subpage-hero::before,
.archive-shell::before {
  content: none !important;
}

.space-panel::after {
  opacity: calc(.14 + (var(--field-energy) * .07));
  background:
    linear-gradient(132deg, transparent 0 34%, color-mix(in srgb, var(--tensor) 13%, transparent) 34.04% 34.12%, transparent 34.22% 100%),
    linear-gradient(46deg, transparent 0 61%, color-mix(in srgb, var(--activation) 10%, transparent) 61.04% 61.12%, transparent 61.24% 100%);
  transform: translate3d(var(--field-panel-x), var(--field-panel-y), 0) !important;
  transition:
    transform 2200ms cubic-bezier(.16, .78, .18, 1),
    opacity 900ms ease;
}

.model-backdrop {
  opacity: calc(.34 + (var(--field-energy) * .1));
}

.model-backdrop::before,
.model-backdrop::after {
  height: 1px;
  filter: none;
  opacity: calc(.34 + (var(--field-energy) * .14));
  will-change: transform, opacity;
  transition:
    transform 2400ms cubic-bezier(.16, .78, .18, 1),
    opacity 900ms ease;
}

.model-backdrop::before {
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--tensor) 34%, transparent), color-mix(in srgb, var(--activation) 24%, transparent), transparent);
  transform: translate3d(var(--field-line-a-x), var(--field-line-a-y), 0) !important;
}

.model-backdrop::after {
  opacity: calc(.28 + (var(--field-energy) * .12));
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--latent) 30%, transparent), color-mix(in srgb, var(--loss) 20%, transparent), transparent);
  transform: translate3d(var(--field-line-b-x), var(--field-line-b-y), 0) !important;
}

.route-curtain {
  left: 50%;
  right: auto;
  bottom: max(22px, env(safe-area-inset-bottom));
  width: auto;
  min-width: 108px;
  min-height: 34px;
  padding: 0;
  border: 1px solid color-mix(in srgb, var(--tensor) 26%, rgba(255, 255, 255, .4));
  border-radius: 999px;
  background: color-mix(in srgb, rgba(28, 50, 64, .58) 76%, transparent);
  box-shadow: 0 14px 36px color-mix(in srgb, var(--tensor) 14%, rgba(0, 0, 0, .16));
  backdrop-filter: blur(16px) saturate(1.18);
  -webkit-backdrop-filter: blur(16px) saturate(1.18);
}

.route-curtain-inner {
  gap: 9px;
  padding: 10px 13px;
}

.route-dot {
  width: 9px;
  height: 9px;
  border: 0;
  background: color-mix(in srgb, var(--tensor) 30%, rgba(255, 255, 255, .28));
  box-shadow: none;
}

.route-dot.is-from {
  background: color-mix(in srgb, var(--tensor) 24%, rgba(255, 255, 255, .2));
}

.route-dot.is-to {
  background: rgba(255, 255, 255, .94);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--tensor) 16%, transparent);
}

body.is-section-switching::before,
body.is-section-switching::after,
body.is-section-switching .space-panel::after,
body.is-section-switching .model-backdrop::before,
body.is-section-switching .model-backdrop::after {
  animation: none !important;
}

@media (max-width: 760px) {
  body::before,
  body::after {
    width: 400vw;
  }

  body::before {
    opacity: calc(.46 + (var(--field-energy) * .09));
  }

  body::after {
    opacity: calc(.32 + (var(--field-energy) * .06));
  }

  .route-curtain {
    min-width: 98px;
    min-height: 32px;
    bottom: max(18px, env(safe-area-inset-bottom));
  }

  .route-curtain-inner {
    gap: 8px;
    padding: 9px 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  body::before,
  body::after {
    transition: none !important;
    animation: none !important;
    transform: translate3d(calc(var(--field-space) * -100vw), 0, 0) !important;
  }

  .space-panel::after,
  .model-backdrop::before,
  .model-backdrop::after {
    transition: none !important;
    animation: none !important;
    transform: none !important;
  }
}

/* Navigation reliability: the route indicator should not eat page clicks. */
.route-curtain,
.route-curtain-inner {
  pointer-events: none !important;
}

.route-dot {
  pointer-events: auto !important;
}

/* Home owns its vertical extent; offscreen long panels must not create empty scroll. */
body[data-spa="true"][data-page="home"] .space-shell {
  align-items: flex-start;
  min-height: 0;
}

body[data-spa="true"][data-page="home"] .space-panel[aria-hidden="true"] {
  height: 0;
  min-height: 0;
  overflow: hidden;
}

body[data-spa="true"][data-page="home"] .footer {
  display: none;
}

@media (min-width: 961px) {
  body[data-spa="true"][data-page="home"] {
    height: 100svh;
    overflow-y: hidden;
  }

  body[data-spa="true"][data-page="home"] .space-viewport,
  body[data-spa="true"][data-page="home"] .space-shell,
  body[data-spa="true"][data-page="home"] .space-panel[data-panel="home"] {
    height: calc(100svh - 76px);
    min-height: calc(100svh - 76px);
  }
}

/* Blog article entry visuals: category-specific, without changing archive layout. */
[data-panel="blog"] .archive-item .post-visual.entry-visual {
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, currentColor 28%, var(--hairline));
  border-radius: 6px;
  background: color-mix(in srgb, var(--glass-strong) 42%, transparent);
  box-shadow: none;
}

[data-panel="blog"] .archive-item .post-visual.entry-visual::before,
[data-panel="blog"] .archive-item .post-visual.entry-visual::after {
  content: none;
}

[data-panel="blog"] .archive-item .entry-visual > svg {
  display: block;
  width: min(76%, 168px);
  height: min(76%, 128px);
  overflow: visible;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.35;
  stroke-linecap: round;
  stroke-linejoin: round;
}

[data-panel="blog"] .archive-item.card-blue .entry-visual { color: var(--blue); }
[data-panel="blog"] .archive-item.card-green .entry-visual { color: var(--green); }
[data-panel="blog"] .archive-item.card-coral .entry-visual { color: var(--coral); }

[data-panel="blog"] .archive-entry-arrow {
  grid-column: 3;
  grid-row: 4;
  align-self: end;
  justify-self: end;
  width: 21px;
  height: 21px;
  fill: none;
  stroke: var(--muted);
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform 180ms ease;
}

[data-panel="blog"] .archive-item:hover .archive-entry-arrow,
[data-panel="blog"] .archive-item:focus-within .archive-entry-arrow {
  transform: translateX(3px);
}

@media (max-width: 760px) {
  [data-panel="blog"] .archive-entry-arrow {
    grid-column: 1;
    grid-row: 6;
    margin-top: -30px;
  }
}

/* Notes and Contact content surfaces; the global field remains untouched. */
[data-panel="notes"] .subpage-shell,
[data-panel="contact"] .subpage-shell {
  width: min(1120px, calc(100% - 40px));
  padding-top: clamp(48px, 6vh, 72px);
}

[data-panel="notes"] .subpage-hero,
[data-panel="contact"] .subpage-hero {
  display: grid;
  align-items: center;
  min-height: 315px;
  padding: clamp(30px, 5vw, 56px);
  border-radius: var(--radius);
}

[data-panel="notes"] .subpage-hero::before,
[data-panel="notes"] .subpage-hero::after,
[data-panel="contact"] .subpage-hero::before,
[data-panel="contact"] .subpage-hero::after {
  content: none;
}

[data-panel="notes"] .subpage-hero h1,
[data-panel="contact"] .subpage-hero h1 {
  margin: 0 0 18px;
  font-size: clamp(2.8rem, 6.4vw, 5.6rem);
  line-height: .98;
  letter-spacing: 0;
}

[data-panel="notes"] .kicker,
[data-panel="contact"] .kicker {
  margin-bottom: 14px;
}

.notes-convergence,
.contact-port {
  flex: 0 1 470px;
  width: min(48vw, 470px);
  height: 160px;
  overflow: visible;
  fill: none;
  stroke: color-mix(in srgb, var(--ink) 62%, var(--muted));
  stroke-width: 1.25;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.notes-convergence .convergence-blue { stroke: var(--blue); }
.notes-convergence .convergence-green { stroke: var(--green); }
.notes-convergence .convergence-coral { stroke: var(--coral); }
.notes-convergence .convergence-junction { stroke: color-mix(in srgb, var(--ink) 72%, var(--muted)); }
.contact-port .port-accent { stroke: var(--green); }
.contact-port .port-coral { stroke: var(--coral); }

[data-panel="notes"] .notes-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 18px;
}

[data-panel="notes"] .note-category {
  position: relative;
  min-width: 0;
  min-height: 210px;
  padding: 28px;
  overflow: hidden;
  border: 1px solid var(--hairline);
  border-radius: 6px;
  background: color-mix(in srgb, var(--glass-strong) 46%, transparent);
  box-shadow: 0 7px 20px color-mix(in srgb, var(--ink) 3%, transparent);
}

[data-panel="notes"] .note-category::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 2px;
  background: currentColor;
}

[data-panel="notes"] .note-math { color: var(--blue); }
[data-panel="notes"] .note-stats { color: var(--green); }
[data-panel="notes"] .note-cs { color: var(--coral); }

[data-panel="notes"] .note-index {
  color: currentColor;
  font-family: var(--mono);
  font-size: .72rem;
  font-weight: 760;
}

[data-panel="notes"] .note-category h2 {
  margin: 28px 0 0;
  color: var(--ink);
  font-size: clamp(1.35rem, 2.4vw, 1.9rem);
  letter-spacing: 0;
}

[data-panel="notes"] .note-card-graphic {
  position: absolute;
  top: 50%;
  right: 58px;
  width: 68px;
  height: 68px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.35;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: .58;
  transform: translateY(-50%);
  transition: opacity 180ms ease, transform 220ms var(--motion-ease);
}

[data-panel="notes"] .note-graphic-secondary {
  opacity: .52;
}

[data-panel="notes"] .note-category:hover .note-card-graphic,
[data-panel="notes"] .note-category:focus-within .note-card-graphic {
  opacity: .82;
  transform: translateY(calc(-50% - 2px));
}

.note-arrow {
  position: absolute;
  right: 24px;
  bottom: 24px;
  width: 21px;
  height: 21px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

[data-panel="contact"] .contact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

[data-panel="contact"] .contact-card,
[data-panel="contact"] a.contact-card {
  position: relative;
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr) 24px;
  align-items: center;
  gap: 16px;
  min-width: 0;
  min-height: 108px;
  padding: 16px 20px;
  overflow: hidden;
  border: 1px solid var(--hairline);
  border-radius: 6px;
  background: color-mix(in srgb, var(--glass-strong) 46%, transparent);
  color: var(--ink);
  box-shadow: 0 7px 20px color-mix(in srgb, var(--ink) 3%, transparent);
  text-align: left;
  transform: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  transition: border-color 180ms ease, transform 180ms ease;
}

[data-panel="contact"] .contact-card::before {
  content: none;
}

[data-panel="contact"] .contact-card::after {
  content: "→";
  position: static;
  justify-self: end;
  width: auto;
  height: auto;
  border: 0;
  border-radius: 0;
  background: none;
  color: var(--muted);
  font-size: 1.18rem;
  opacity: 1;
  z-index: 2;
  transform: none;
  transition: transform 180ms ease;
}

[data-panel="contact"] .contact-card:hover,
[data-panel="contact"] .contact-card:focus-visible {
  border-color: color-mix(in srgb, var(--blue) 42%, var(--hairline));
  background: color-mix(in srgb, var(--glass-strong) 46%, transparent);
  box-shadow: 0 7px 20px color-mix(in srgb, var(--ink) 3%, transparent);
  transform: translateY(-1px);
}

[data-panel="contact"] .contact-card:hover::after,
[data-panel="contact"] .contact-card:focus-visible::after {
  transform: translateX(3px);
}

[data-panel="contact"] .contact-symbol.contact-icon {
  display: block;
  width: 88px;
  height: 52px;
  border: 0;
  border-radius: 0;
  background: none;
  box-shadow: none;
  color: var(--ink);
  transform: none;
}

[data-panel="contact"] .contact-symbol.contact-icon::before,
[data-panel="contact"] .contact-symbol.contact-icon::after {
  content: none;
}

[data-panel="contact"] .contact-icon svg {
  display: block;
  width: 88px;
  height: 52px;
  overflow: visible;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

[data-panel="contact"] .contact-symbol.icon-personal-mail { color: var(--blue); }
[data-panel="contact"] .contact-symbol.icon-work-mail,
[data-panel="contact"] .contact-symbol.icon-discord { color: var(--green); }
[data-panel="contact"] .contact-symbol.icon-phone,
[data-panel="contact"] .contact-symbol.icon-bilibili { color: var(--coral); }
[data-panel="contact"] .contact-symbol.icon-github { color: var(--ink); }

[data-panel="contact"] .contact-card > span:not(.contact-symbol) {
  display: grid;
  gap: 6px;
  min-width: 0;
}

[data-panel="contact"] .contact-card strong {
  color: var(--ink);
  font-size: .96rem;
}

[data-panel="contact"] .contact-card small {
  min-width: 0;
  color: var(--muted);
  overflow-wrap: anywhere;
}

[data-panel="home"] .portal-button small {
  display: block;
}

@media (max-width: 820px) {
  [data-panel="notes"] .notes-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  [data-panel="notes"] .note-category:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 680px) {
  [data-panel="home"] .portal-button small {
    display: none;
  }

  [data-panel="notes"] .subpage-shell,
  [data-panel="contact"] .subpage-shell {
    width: min(100% - 30px, 560px);
    padding-top: 32px;
  }

  [data-panel="notes"] .subpage-hero,
  [data-panel="contact"] .subpage-hero {
    display: grid;
    gap: 16px;
    min-height: 0;
    padding: 26px 22px 22px;
  }

  .notes-convergence,
  .contact-port {
    width: 100%;
    height: 112px;
  }

  [data-panel="notes"] .notes-grid,
  [data-panel="contact"] .contact-grid {
    grid-template-columns: 1fr;
  }

  [data-panel="notes"] .note-category,
  [data-panel="notes"] .note-category:last-child {
    grid-column: auto;
    min-height: 146px;
    padding: 22px;
  }

  [data-panel="notes"] .note-category h2 {
    margin-top: 18px;
  }

  [data-panel="notes"] .note-category-link {
    padding: 22px;
  }

  [data-panel="contact"] .contact-card,
  [data-panel="contact"] a.contact-card {
    grid-template-columns: 74px minmax(0, 1fr) 20px;
    gap: 10px;
    min-height: 98px;
    padding: 14px;
  }

  [data-panel="contact"] .contact-symbol.contact-icon,
  [data-panel="contact"] .contact-icon svg {
    width: 72px;
    height: 46px;
  }
}

@media (max-width: 360px) {
  [data-panel="contact"] .contact-card,
  [data-panel="contact"] a.contact-card {
    grid-template-columns: 62px minmax(0, 1fr) 18px;
    padding-inline: 11px;
  }

  [data-panel="contact"] .contact-symbol.contact-icon,
  [data-panel="contact"] .contact-icon svg {
    width: 60px;
  }
}

/* Notes and Contact share the Blog hero component contract. */
[data-panel="notes"] .subpage-hero,
[data-panel="contact"] .subpage-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 300px);
  align-items: center;
  gap: clamp(28px, 5vw, 72px);
  min-height: 315px;
  padding: clamp(30px, 5vw, 56px);
  border: 1px solid color-mix(in srgb, var(--blue) 13%, var(--hairline));
  border-radius: var(--radius);
  background:
    linear-gradient(145deg,
      color-mix(in srgb, var(--glass-window-strong) 94%, var(--tensor) 5%),
      color-mix(in srgb, var(--glass-window) 92%, var(--latent) 5%));
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, var(--glass-edge) 76%, transparent),
    var(--shadow);
}

[data-panel="notes"] .subpage-hero > div,
[data-panel="contact"] .subpage-hero > div {
  padding-left: 0;
}

[data-panel="notes"] .subpage-hero > div::before,
[data-panel="contact"] .subpage-hero > div::before {
  content: none;
}

@media (max-width: 760px) {
  .subpage-hero,
  [data-panel="notes"] .subpage-hero,
  [data-panel="contact"] .subpage-hero {
    grid-template-columns: 1fr;
    min-height: 290px;
  }

  .hero-ai-graphic {
    position: absolute;
    top: 18px;
    right: 18px;
    bottom: auto;
    width: 60px;
    height: 60px;
    opacity: .22;
    pointer-events: none;
  }
}

/* Blog topic controls preserve every article while changing visual emphasis. */
[data-panel="blog"] .topic-panel {
  display: grid;
  align-content: start;
  gap: 7px;
}

[data-panel="blog"] .topic-filter,
[data-panel="blog"] .topic-rss {
  width: 100%;
  min-height: 42px;
  padding: 9px 12px;
  border: 1px solid transparent;
  border-radius: 5px;
  background: transparent;
  color: var(--muted);
  text-align: left;
  transition: color 180ms ease, border-color 180ms ease, background-color 180ms ease, transform 220ms var(--motion-ease);
}

[data-panel="blog"] .topic-filter::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 10px;
  border: 1px solid currentColor;
  border-radius: 50%;
  vertical-align: 1px;
}

[data-panel="blog"] .topic-filter:hover,
[data-panel="blog"] .topic-filter:focus-visible {
  color: var(--ink);
  transform: translateX(2px);
}

[data-panel="blog"] .topic-filter.is-active {
  border-color: color-mix(in srgb, var(--tensor) 38%, var(--hairline));
  background: color-mix(in srgb, var(--tensor) 8%, transparent);
  color: var(--ink);
}

[data-panel="blog"] .topic-filter.is-active::before {
  border-color: var(--tensor);
  background: var(--tensor);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--tensor) 10%, transparent);
}

[data-panel="blog"] .topic-rss {
  margin-top: 9px;
  border-top-color: var(--hairline);
  border-radius: 0;
  font-family: var(--mono);
}

@media (max-width: 760px) {
  [data-panel="blog"] .topic-panel {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: stretch;
    gap: 8px;
    padding: 12px;
  }

  [data-panel="blog"] .topic-panel::before {
    display: none;
  }

  [data-panel="blog"] .topic-panel h2 {
    grid-column: 1 / -1;
    margin-bottom: 0;
  }

  [data-panel="blog"] .topic-filter,
  [data-panel="blog"] .topic-rss {
    min-width: 0;
    min-height: 44px;
    margin-top: 0;
    padding: 10px 11px;
    border-color: color-mix(in srgb, var(--tensor) 18%, var(--hairline));
    border-radius: 5px;
    background: color-mix(in srgb, var(--module-bg-2) 62%, var(--module-bg));
    font-size: .8rem;
    line-height: 1.2;
  }

  [data-panel="blog"] .topic-filter::before {
    width: 6px;
    height: 6px;
    margin-right: 6px;
  }

  [data-panel="blog"] .topic-filter.is-active {
    font-weight: 760;
  }

  [data-panel="blog"] .topic-rss {
    grid-column: 1 / -1;
  }
}

[data-panel="blog"] .archive-item {
  opacity: 1;
  filter: saturate(1) contrast(1);
  transform: translate3d(0, 0, 0);
  transition:
    opacity 360ms var(--motion-ease),
    filter 420ms var(--motion-ease),
    transform 420ms var(--motion-ease),
    border-color 240ms ease,
    box-shadow 240ms ease;
  transition-delay: calc(var(--topic-order, 0) * 24ms);
}

/* Contact icons use ordinary, immediately recognizable line drawings. */
[data-panel="contact"] .contact-icon svg,
.modal-symbol.contact-icon svg {
  width: 58px;
  height: 58px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

[data-panel="contact"] .brand-contact-icon svg,
.modal-symbol.brand-contact-icon svg {
  fill: currentColor;
  stroke: none;
}

.modal-symbol.contact-icon {
  width: 64px;
  height: 64px;
  margin: 2px auto 18px;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.modal-symbol.contact-icon::before,
.modal-symbol.contact-icon::after {
  content: none;
}

.modal-symbol.icon-personal-mail { color: var(--blue); }
.modal-symbol.icon-work-mail { color: var(--green); }
.modal-symbol.icon-phone { color: var(--coral); }

@media (min-width: 961px) {
  [data-panel="home"] .hero-stage {
    width: min(1344px, calc(100% - 64px));
  }

  [data-panel="home"] #home-title {
    font-size: clamp(4rem, 6.15vw, 6.15rem);
  }

  [data-panel="home"] .portal-actions {
    gap: 56px;
  }

  [data-panel="home"] .node-query {
    left: 59.3%;
    top: 10.2%;
  }

  [data-panel="home"] .node-key {
    right: 16.2%;
    top: 22.4%;
  }

  [data-panel="home"] .node-value {
    left: 56.2%;
    bottom: 24.8%;
  }
}

@media (max-width: 680px) {
  [data-panel="notes"] .subpage-hero,
  [data-panel="contact"] .subpage-hero {
    padding: 28px 0 22px;
  }

  [data-panel="notes"] .subpage-hero > div,
  [data-panel="contact"] .subpage-hero > div {
    min-width: 0;
    padding-left: 16px;
  }

}

.note-category-page .article {
  min-height: min(680px, calc(100svh - 150px));
}

.note-empty-state {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
  margin-top: 46px;
  padding: 28px 0;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}

.note-empty-index {
  color: var(--muted);
  font: 760 .74rem/1 var(--mono);
}

.note-empty-state h2 {
  margin: 0 0 8px;
  font-size: clamp(1.25rem, 2vw, 1.7rem);
}

.note-empty-state p {
  margin: 0;
  color: var(--muted);
}

/* Precision pass: reference-aligned Home composition and unified content cards. */
[data-panel="home"] .uoft-mark {
  position: relative;
  display: block;
  flex: 0 0 auto;
  width: 42px;
  height: 50px;
  overflow: hidden;
}

[data-panel="home"] .uoft-mark img {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 72px;
  height: 54px;
  max-width: none;
  object-fit: contain;
  transform: translate(-50%, -50%);
}

[data-panel="home"] .identity-school {
  display: flex;
  align-items: center;
  gap: 16px;
}

[data-panel="home"] .qkv-identity {
  grid-template-columns: 1fr;
  align-items: start;
  gap: 22px;
}

[data-panel="home"] .qkv-map {
  gap: clamp(24px, 2.8vw, 44px);
  padding-left: 0;
}

[data-panel="home"] .qkv-map::before {
  display: none;
}

[data-panel="home"] .qkv-token {
  display: inline-grid;
  grid-template-columns: 26px auto;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  width: 112px;
  height: 42px;
  min-height: 42px;
  gap: 10px;
  padding-inline: 12px;
}

[data-panel="home"] .qkv-token strong {
  display: inline-grid;
  place-items: center;
  box-sizing: border-box;
  width: 26px;
  height: 26px;
  min-width: 26px;
  padding: 0;
  border-radius: 50%;
  line-height: 1;
  transform: none;
}

[data-panel="home"] .q-token strong {
  border-color: color-mix(in srgb, var(--tensor) 72%, var(--hairline));
  color: var(--tensor);
}

[data-panel="home"] .k-token strong {
  border-color: color-mix(in srgb, var(--activation) 72%, var(--hairline));
  color: var(--activation);
}

[data-panel="home"] .v-token strong {
  border-color: color-mix(in srgb, var(--loss) 72%, var(--hairline));
  color: var(--loss);
}

[data-panel="home"] .q-token::after,
[data-panel="home"] .k-token::after {
  content: "\00b7";
  position: absolute;
  right: calc(clamp(24px, 2.8vw, 44px) / -2 - 2px);
  color: var(--muted);
  font: 700 1rem/1 var(--sans);
}

[data-panel="home"] .qkv-token em {
  display: block;
  margin: 0;
  font-size: .92rem;
  line-height: 1;
}

[data-panel="home"] .portal-button {
  min-height: 76px;
  padding-block: 14px 12px;
}

[data-panel="notes"] .note-category {
  border: 1px solid color-mix(in srgb, currentColor 34%, var(--hairline));
  border-radius: 16px;
  background:
    linear-gradient(135deg, var(--module-bg-2), var(--module-bg)),
    repeating-linear-gradient(90deg, transparent 0 23px, color-mix(in srgb, var(--ink) 3%, transparent) 24px 25px);
  box-shadow:
    inset 5px 0 0 currentColor,
    inset 0 1px 0 color-mix(in srgb, white 54%, transparent),
    var(--module-shadow);
}

[data-panel="notes"] .note-category::before {
  content: none;
}

[data-panel="notes"] .note-category-link {
  position: absolute;
  inset: 0;
  display: block;
  padding: 28px;
  color: inherit;
}

[data-panel="notes"] .note-category:hover,
[data-panel="notes"] .note-category:focus-within {
  transform: translateY(-3px);
  border-color: currentColor;
}

[data-panel="notes"] .note-category:focus-within {
  outline: 2px solid color-mix(in srgb, currentColor 66%, transparent);
  outline-offset: 3px;
}

[data-panel="notes"] .note-category-link:focus-visible {
  outline: none;
}

[data-panel="notes"] .note-category:hover .note-arrow,
[data-panel="notes"] .note-category:focus-within .note-arrow {
  transform: translateX(3px);
}

[data-panel="notes"] .note-arrow {
  transition: transform 180ms ease;
}

[data-panel="contact"] .contact-card::after {
  content: "\2192";
}

[data-panel="contact"] .contact-card,
[data-panel="contact"] a.contact-card {
  grid-template-columns: 96px minmax(0, 1fr) 24px;
}

[data-panel="contact"] .contact-symbol.contact-icon,
[data-panel="contact"] .contact-icon svg {
  width: 64px;
  height: 64px;
}

[data-panel="contact"] .contact-icon svg {
  vector-effect: non-scaling-stroke;
}

@media (min-width: 961px) {
  body[data-spa="true"][data-page="home"] {
    height: auto;
    min-height: calc(100svh + 52px);
    overflow-y: auto;
  }

  body[data-spa="true"][data-page="home"] .space-viewport,
  body[data-spa="true"][data-page="home"] .space-shell,
  body[data-spa="true"][data-page="home"] .space-panel[data-panel="home"],
  [data-panel="home"] .home-panel-inner {
    height: calc(100svh - 24px);
    min-height: calc(100svh - 24px);
  }

  [data-panel="home"] .hero-stage {
    width: min(1340px, calc(100% - 64px));
    height: calc(100svh - 24px);
    min-height: 0;
    max-height: none;
    grid-template-rows: minmax(0, 1fr) auto;
    gap: 40px;
    padding: 58px 0 128px;
  }

  [data-panel="home"] .intro-glass {
    grid-column: 1 / 8;
    gap: 26px;
    transform: translateY(10px);
  }

  [data-panel="home"] #home-title {
    font-size: clamp(4rem, 5.55vw, 5.55rem);
  }

  [data-panel="home"] #home-title [data-lang-content]:not([hidden]) {
    flex-wrap: nowrap;
  }

  [data-panel="home"] .quick-panel {
    grid-column: 9 / 13;
    transform: translateY(66px);
  }

  [data-panel="home"] .portal-actions {
    grid-column: 1 / 13;
  }
}

@media (max-width: 960px) {
  body[data-spa="true"][data-page="home"] .space-panel[data-panel="home"] {
    padding-bottom: 72px;
  }
}

@media (max-width: 680px) {
  [data-panel="home"] .uoft-mark {
    width: 34px;
    height: 42px;
  }

  [data-panel="home"] .identity-school {
    gap: 12px;
  }

  [data-panel="home"] .qkv-identity {
    gap: 18px;
  }

  [data-panel="home"] .qkv-map {
    gap: 16px;
  }

  [data-panel="home"] .qkv-token {
    grid-template-columns: 24px auto;
    width: 104px;
    height: 40px;
    min-height: 40px;
    gap: 8px;
    padding-inline: 10px;
  }

  [data-panel="home"] .qkv-token strong {
    width: 24px;
    height: 24px;
    min-width: 24px;
  }

  [data-panel="contact"] .contact-card,
  [data-panel="contact"] a.contact-card {
    grid-template-columns: 78px minmax(0, 1fr) 20px;
  }

  [data-panel="contact"] .contact-symbol.contact-icon,
  [data-panel="contact"] .contact-icon svg {
    width: 56px;
    height: 56px;
  }
}

@media (max-width: 360px) {
  [data-panel="contact"] .contact-card,
  [data-panel="contact"] a.contact-card {
    grid-template-columns: 64px minmax(0, 1fr) 18px;
  }

  [data-panel="contact"] .contact-symbol.contact-icon,
  [data-panel="contact"] .contact-icon svg {
    width: 50px;
    height: 50px;
  }
}