@font-face {
  font-family: "Instrument Serif";
  src: url("../fonts/instrument-serif-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Instrument Serif";
  src: url("../fonts/instrument-serif-400-italic.woff2") format("woff2");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: "Instrument Sans";
  src: url("../fonts/instrument-sans-var.woff2") format("woff2");
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("../fonts/jetbrains-mono-400.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("../fonts/jetbrains-mono-500.woff2") format("woff2");
  font-weight: 500;
  font-display: swap;
}

:root {
  --paper: #f6f5f1;
  --card: #fdfcf9;
  --ink: #171717;
  --ink-2: #3d3c39;
  --muted: #77736c;
  --line: rgba(23, 23, 23, 0.09);
  --line-2: rgba(23, 23, 23, 0.16);
  --soft: rgba(23, 23, 23, 0.05);
  --dark: #171717;
  --dark-text: #edebe6;
  --dark-muted: rgba(237, 235, 230, 0.58);
  --dark-line: rgba(237, 235, 230, 0.14);
  --serif: "Instrument Serif", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --sans: "Instrument Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Apple SD Gothic Neo", "Malgun Gothic", "Hiragino Kaku Gothic ProN", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --radius: 18px;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 16px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img, video { display: block; max-width: 100%; }
a { color: inherit; }
button { font: inherit; color: inherit; cursor: pointer; }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; border-radius: 6px; }
p { margin: 0; }
h1, h2, h3 { margin: 0; font-weight: 400; }
code { font-family: var(--mono); font-size: 0.86em; }
:lang(zh) { font-family: "Instrument Sans", -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif; }
:lang(ja) { font-family: "Instrument Sans", -apple-system, "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", "Noto Sans CJK JP", sans-serif; }
:lang(ko) { font-family: "Instrument Sans", -apple-system, "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans CJK KR", sans-serif; }
b { font-weight: 600; }

.wrap { width: min(1160px, 100% - 64px); margin: 0 auto; }
.skip { position: absolute; left: -999px; top: 12px; z-index: 100; background: var(--ink); color: var(--paper); padding: 8px 14px; border-radius: 8px; }
.skip:focus { left: 12px; }

.label {
  font: 500 11px/1.2 var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

/* Navigation */
.nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: 68px;
  border-bottom: 1px solid transparent;
  transition: background-color 0.35s var(--ease), border-color 0.35s var(--ease);
}
.nav.is-scrolled {
  background: rgba(246, 245, 241, 0.86);
  -webkit-backdrop-filter: saturate(1.2) blur(16px);
  backdrop-filter: saturate(1.2) blur(16px);
  border-bottom-color: var(--line);
}
.nav-inner { height: 100%; display: flex; align-items: center; gap: 40px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 600; font-size: 15px; letter-spacing: -0.01em; }
.brand img { width: 20px; height: auto; }
.nav-links { display: flex; gap: 28px; margin-left: auto; font-size: 14px; }
.nav-links a { text-decoration: none; opacity: 0.72; transition: opacity 0.2s; }
.nav-links a:hover { opacity: 1; }
.nav-cta {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 14px; border-radius: 999px;
  border: 1px solid currentColor; border-color: color-mix(in srgb, currentColor 28%, transparent);
  font-size: 13.5px; font-weight: 500; text-decoration: none;
  transition: background-color 0.2s, border-color 0.2s;
}
.nav-cta:hover { background: color-mix(in srgb, currentColor 8%, transparent); }
.nav-cta svg { width: 15px; height: 15px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 46px; padding: 0 22px; border-radius: 999px;
  font-size: 15px; font-weight: 500; text-decoration: none; white-space: nowrap;
  border: 1px solid transparent;
  transition: transform 0.25s var(--ease), background-color 0.2s, border-color 0.2s, color 0.2s;
}
.btn:hover { transform: translateY(-1px); }
.btn-dark { background: var(--ink); color: var(--paper); }
.btn-dark:hover { background: #000; }
.btn-outline { border-color: var(--line-2); }
.btn-outline:hover { border-color: var(--ink); }

/* Hero */
.hero { padding: 184px 0 0; text-align: center; }
.eyebrow { font: 500 12px/1.4 var(--mono); letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); }
.hero h1 {
  margin-top: 24px;
  font-family: var(--serif);
  font-size: clamp(56px, 8.4vw, 120px);
  line-height: 0.95;
  letter-spacing: -0.03em;
  white-space: nowrap;
}
.hero-foot { display: flex; flex-direction: column; align-items: center; gap: 36px; margin-top: 28px; }
.hero-sub { max-width: 34em; font-size: clamp(18px, 1.6vw, 20px); line-height: 1.55; color: var(--ink-2); text-wrap: balance; }
.hero-sub span { display: block; margin-top: 4px; color: var(--muted); }
.hero-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }

.aa-strip { margin-top: 112px; border-top: 1px solid var(--line-2); text-align: left; }
.aa-head { display: flex; justify-content: space-between; gap: 16px; padding: 18px 0 8px; font: 500 11.5px/1.4 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.aa-head a { color: var(--ink); text-decoration: none; white-space: nowrap; }
.aa-head a::after { content: " ↓"; }
.aa-items { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.aa-item { display: flex; gap: 18px; align-items: flex-start; padding: 22px 28px 6px 0; text-decoration: none; }
.aa-item + .aa-item { padding-left: 28px; border-left: 1px solid var(--line); }
.aa-rank { font: 400 76px/0.82 var(--serif); letter-spacing: -0.03em; color: var(--ink); }
.aa-rank span { font-size: 0.36em; letter-spacing: 0; vertical-align: top; margin-left: 2px; color: var(--muted); }
.aa-text { display: grid; gap: 3px; padding-top: 2px; }
.aa-scope { font: 500 11px/1.4 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.aa-board { font-size: 19px; font-weight: 500; line-height: 1.3; color: var(--ink); }
.aa-item:hover .aa-board { text-decoration: underline; text-underline-offset: 4px; text-decoration-color: var(--line-2); }
.aa-meta { font-size: 13.5px; color: var(--muted); }

/* Video */
.video-band { padding-top: 88px; }
.video-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: 20px;
  overflow: hidden;
  background: var(--dark);
  box-shadow: 0 0 0 1px var(--line);
}
.video-frame video { width: 100%; height: 100%; object-fit: cover; }
.video-play {
  position: absolute; left: 50%; bottom: 28px; transform: translateX(-50%);
  display: inline-flex; align-items: center; gap: 14px;
  padding: 8px 22px 8px 8px; border: 0; border-radius: 999px;
  background: rgba(23, 23, 23, 0.82); color: var(--dark-text);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  transition: transform 0.3s var(--ease), background-color 0.2s;
}
.video-play:hover { transform: translateX(-50%) translateY(-2px); background: rgba(23, 23, 23, 0.94); }
.video-play-icon { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; background: var(--dark-text); color: var(--dark); }
.video-play-icon svg { width: 18px; height: 18px; margin-left: 2px; }
.video-play-text { font-size: 15px; font-weight: 500; white-space: nowrap; }
.video-play-text span { margin-left: 6px; font: 400 13px var(--mono); color: var(--dark-muted); }
.video-frame.is-playing .video-play { opacity: 0; pointer-events: none; }

/* Sections */
.section { padding: 136px 0; }
.section + .section { border-top: 1px solid var(--line); }
#architecture { padding-top: 128px; }
.section-head { max-width: 820px; }
.kicker {
  display: flex; align-items: center; gap: 12px;
  font: 500 12px/1 var(--mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted);
}
.kicker span { color: var(--ink); }
.kicker::after { content: ""; width: 44px; height: 1px; background: var(--line-2); }
h2 {
  margin-top: 22px;
  font-family: var(--serif);
  font-size: clamp(42px, 5.4vw, 72px);
  line-height: 1;
  letter-spacing: -0.02em;
  text-wrap: balance;
}
.lead { margin-top: 26px; font-size: 19px; line-height: 1.62; color: var(--ink-2); }
.body { margin-top: 18px; font-size: 16px; color: var(--muted); }
.body a, .lead a, .fine a, .bench-intro a { color: var(--ink); text-underline-offset: 3px; text-decoration-color: rgba(23, 23, 23, 0.3); }
.fine { margin-top: 22px; font-size: 14px; color: var(--muted); }

/* Story sections */
.story .samples { margin-top: 56px; }
.story .matrix { margin-top: 56px; }
.story .fine { max-width: 76ch; }
.samples.samples-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.story .matrix + .fine + .samples { margin-top: 40px; }

/* Artificial Analysis rows */
.aa-row { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 64px; align-items: start; margin-top: 56px; padding-top: 56px; border-top: 1px solid var(--line-2); }
.section-head + .aa-row { margin-top: 64px; }
.aa-copy h3 { font: 400 clamp(30px, 3.2vw, 40px)/1.08 var(--serif); letter-spacing: -0.015em; }
.aa-copy p { margin-top: 16px; font-size: 16.5px; line-height: 1.62; color: var(--ink-2); }
.aa-copy b { color: var(--ink); }
.chart {
  margin: 0;
  padding: 20px 24px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}
.chart { scroll-margin-top: 24px; }
.chart-head { display: grid; gap: 6px; margin-bottom: 16px; }
.chart-src { font: 500 11px/1.4 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.chart-title { font: 400 30px/1.08 var(--serif); letter-spacing: -0.01em; color: var(--ink); }
.chart-sub { font-size: 14px; line-height: 1.5; color: var(--muted); }
.chart-rows { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.chart-rows li { display: grid; grid-template-columns: 1.6em minmax(0, 13.5em) minmax(0, 1fr) 3.4em; align-items: center; gap: 12px; font-size: 14px; color: var(--ink-2); }
.c-rank { font: 400 12px/1 var(--mono); color: var(--muted); }
.c-name { line-height: 1.3; overflow-wrap: anywhere; }
.c-bar { position: relative; height: 10px; border-radius: 999px; background: rgba(23, 23, 23, 0.06); }
.c-bar::before {
  content: ""; position: absolute; inset: 0 auto 0 0; width: var(--w);
  border-radius: inherit; background: rgba(23, 23, 23, 0.18);
  transform-origin: left; transition: transform 1.1s var(--ease) 0.15s;
}
.js .reveal:not(.is-in) .c-bar::before { transform: scaleX(0); }
.c-val { font: 400 13px/1 var(--mono); text-align: right; font-variant-numeric: tabular-nums; }
.chart-rows .is-ming { color: var(--ink); font-weight: 600; }
.chart-rows .is-ming .c-rank, .chart-rows .is-ming .c-val { color: var(--ink); font-weight: 500; }
.chart-rows .is-ming .c-bar::before { background: var(--ink); }
.chart-more { margin-top: 9px; }
.chart-more summary { display: inline-flex; align-items: center; gap: 6px; margin: 4px 0 2px; font-size: 13.5px; font-weight: 500; color: var(--ink); cursor: pointer; list-style: none; }
.chart-more summary::-webkit-details-marker { display: none; }
.chart-more summary::after { content: "+"; font: 400 14px/1 var(--mono); }
.chart-more[open] summary { margin-bottom: 12px; }
.chart-more[open] summary::after { content: "−"; }
.chart-foot { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 16px; margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--line); font-size: 13px; color: var(--muted); }
.chart-foot a { color: var(--ink); font-weight: 500; text-decoration: none; }
.chart-foot a::after { content: " ↗"; }
.chart-foot a:hover { text-decoration: underline; text-underline-offset: 3px; }

.variants { margin-top: 64px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.variant {
  padding: 30px 32px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
}
.variant h3 { margin-top: 10px; font-family: var(--serif); font-size: 38px; line-height: 1.05; letter-spacing: -0.015em; }
.variant-lead { margin-top: 12px; min-height: 3.2em; font-size: 16px; line-height: 1.6; color: var(--ink-2); }
.specs { margin: 22px 0 0; display: grid; }
.specs div { display: grid; grid-template-columns: 120px 1fr; gap: 16px; padding: 11px 0; border-top: 1px solid var(--line); font-size: 15px; }
.specs dt { color: var(--muted); }
.specs dd { margin: 0; color: var(--ink); }
.variant-links { display: flex; gap: 22px; margin-top: 18px; font-size: 14px; font-weight: 500; }
.variant-links a { color: var(--ink); text-decoration: none; }
.variant-links a::after { content: " ↗"; }
.variant-links a:hover { text-decoration: underline; text-underline-offset: 3px; }

/* Figures */
.figure-card {
  margin: 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}
.figure-card img { width: 100%; height: auto; border-radius: 8px; }
.figure-card figcaption { padding: 14px 4px 2px; font-size: 13.5px; color: var(--muted); }
.zoom { display: block; width: 100%; padding: 0; border: 0; background: none; cursor: zoom-in; border-radius: 8px; }

/* Listen */
.listen-grid { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 64px; align-items: start; margin-top: 64px; }
.tabs {
  position: sticky; top: 100px;
  display: flex; flex-direction: column;
  border-left: 1px solid var(--line);
  scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }
.tab {
  display: flex; align-items: baseline; gap: 14px;
  margin-left: -1px;
  padding: 9px 0 9px 20px;
  border: 0; border-left: 2px solid transparent;
  background: transparent;
  font-size: 15px; font-weight: 500; color: var(--muted);
  text-align: left; white-space: nowrap;
  transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}
.tab-no { font: 400 11px/1 var(--mono); letter-spacing: 0.08em; color: rgba(23, 23, 23, 0.36); transition: color 0.2s; }
.tab:hover { color: var(--ink); }
.tab[aria-selected="true"] { color: var(--ink); border-left-color: var(--ink); }
.tab[aria-selected="true"] .tab-no { color: var(--ink); }

.panel[hidden] { display: none; }
.panel-head { display: grid; gap: 12px; margin-bottom: 28px; }
.panel-head h3 { font-family: var(--serif); font-size: clamp(30px, 3.2vw, 40px); line-height: 1.08; letter-spacing: -0.015em; }
.panel-head p { max-width: 62ch; font-size: 15px; color: var(--muted); }
.panel.is-entering .samples, .panel.is-entering .matrix { animation: rise 0.5s var(--ease) both; }

/* Samples */
.samples { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.panel .samples { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.sample {
  display: flex; flex-direction: column; gap: 16px;
  padding: 20px 22px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  transition: border-color 0.25s, box-shadow 0.25s;
}
.sample:hover { border-color: var(--line-2); }
.sample.is-playing { border-color: rgba(23, 23, 23, 0.4); box-shadow: 0 0 0 4px var(--soft); }
.task-chip {
  align-self: flex-start;
  display: inline-flex; align-items: center; gap: 8px;
  font: 500 11px/1.2 var(--mono); letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink); text-decoration: none;
}
.task-chip::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: currentColor; }
.task-chip:hover { text-decoration: underline; text-underline-offset: 3px; }
.sample-meta { display: grid; gap: 7px; }
.sample-meta dd { margin: 0; font-size: 14.5px; line-height: 1.5; color: var(--ink-2); }
.chip { display: inline-block; padding: 3px 9px; border-radius: 7px; background: var(--soft); color: var(--ink-2); font: 400 13px/1.5 var(--mono); }
.sample-text { flex: 1; font-size: 18px; line-height: 1.55; color: var(--ink); }
.tag { padding: 1px 6px; margin: 0 1px; border-radius: 6px; background: var(--soft); color: var(--ink-2); font: 400 0.76em/1 var(--mono); vertical-align: 0.12em; white-space: nowrap; }

.matrix { border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); overflow: hidden; }
.matrix-row { display: grid; grid-template-columns: 110px minmax(0, 1.25fr) minmax(0, 1fr) minmax(0, 1fr); gap: 28px; align-items: center; padding: 15px 24px; }
.matrix-row + .matrix-row { border-top: 1px solid var(--line); }
.matrix-head { padding-top: 16px; padding-bottom: 14px; background: rgba(23, 23, 23, 0.025); }
.matrix-head span:nth-child(n + 3) { font-family: var(--sans); text-transform: none; letter-spacing: 0; font-size: 14px; font-weight: 600; color: var(--ink); }
.matrix-lang { font-size: 15px; font-weight: 500; }
.matrix-text { font-size: 16px; line-height: 1.5; color: var(--ink-2); }
.matrix-cell-label { display: none; }

/* Player */
.player { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 14px; --p: 0%; }
.play {
  display: grid; place-items: center;
  width: 40px; height: 40px; flex: none;
  border: 0; border-radius: 50%;
  background: var(--ink); color: var(--paper);
  transition: transform 0.2s var(--ease), background-color 0.2s;
}
.play:hover { transform: scale(1.06); }
.play svg { width: 14px; height: 14px; }
.play .i-pause { display: none; }
.player.is-playing .play .i-play { display: none; }
.player.is-playing .play .i-pause { display: block; }
.play .i-play { margin-left: 2px; }
.wave { position: relative; height: 34px; cursor: pointer; touch-action: none; }
.wave:focus-visible { outline-offset: 4px; }
.bars { position: absolute; inset: 0; display: flex; align-items: center; gap: 2px; }
.bars i { flex: 1 1 0; min-width: 1px; height: calc(var(--h) * 1%); border-radius: 2px; background: currentColor; }
.bars-base { color: rgba(23, 23, 23, 0.17); }
.bars-fill { color: var(--ink); clip-path: inset(0 calc(100% - var(--p)) 0 0); }
.wave::after {
  content: ""; position: absolute; top: -3px; bottom: -3px; left: var(--hx, 0); width: 1px;
  background: var(--ink); opacity: 0; transition: opacity 0.15s; pointer-events: none;
}
.wave:hover::after { opacity: 0.35; }
.time { min-width: 4.2ch; font: 400 12px/1 var(--mono); color: var(--muted); text-align: right; font-variant-numeric: tabular-nums; }

.player-sm { gap: 10px; }
.player-sm .play { width: 32px; height: 32px; }
.player-sm .play svg { width: 11px; height: 11px; }
.player-sm .wave { height: 26px; }

/* Benchmarks */
.bench { margin-top: 72px; }
.bench + .bench { margin-top: 96px; padding-top: 72px; border-top: 1px solid var(--line-2); }
.aa-row + .bench { margin-top: 56px; padding-top: 56px; border-top: 1px solid var(--line-2); }
.bench-intro { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: 48px; align-items: baseline; margin-bottom: 32px; }
.bench-intro h3 { font-family: var(--serif); font-size: clamp(30px, 3.2vw, 40px); line-height: 1.08; letter-spacing: -0.015em; }
.bench-intro p { font-size: 16px; color: var(--ink-2); }
.next { margin-top: 48px; padding-top: 24px; max-width: 76ch; border-top: 1px solid var(--line-2); font-size: 16px; color: var(--ink-2); }
.next b { color: var(--ink); }

.arch-figure { margin-top: 56px; }
.figure-pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }

/* Get started */
.get-grid { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 64px; align-items: center; }
.get-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 34px; }
.code-card { border-radius: var(--radius); background: var(--dark); color: var(--dark-text); overflow: hidden; }
.code-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 12px 14px 12px 12px; border-bottom: 1px solid var(--dark-line); }
.seg { display: inline-flex; padding: 3px; border-radius: 999px; background: rgba(237, 235, 230, 0.08); }
.seg button { padding: 5px 14px; border: 0; border-radius: 999px; background: transparent; font: 500 12.5px/1.4 var(--mono); color: var(--dark-muted); }
.seg button[aria-pressed="true"] { background: var(--dark-text); color: var(--dark); }
.copy { padding: 6px 12px; border: 1px solid var(--dark-line); border-radius: 8px; background: transparent; font: 500 12px/1.3 var(--mono); color: var(--dark-text); transition: border-color 0.2s; }
.copy:hover { border-color: rgba(237, 235, 230, 0.4); }
.code-card pre { margin: 0; padding: 22px 24px 26px; overflow-x: auto; font: 400 13.5px/1.85 var(--mono); }
.code-card pre code { font-size: inherit; }

/* Footer */
.footer { padding: 64px 0 56px; border-top: 1px solid var(--line); }
.footer-inner { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 56px; align-items: start; }
.footer-brand p { margin-top: 8px; font-size: 13.5px; color: var(--muted); }
.footer-note { max-width: 560px; font-size: 13.5px; line-height: 1.6; color: var(--muted); }
.footer-links { display: flex; gap: 22px; font-size: 14px; font-weight: 500; }
.footer-links a { text-decoration: none; }
.footer-links a:hover { text-decoration: underline; text-underline-offset: 3px; }

/* Zoom dialog */
.zoom-dialog {
  width: 100vw; height: 100vh; max-width: none; max-height: none;
  margin: 0; padding: 4vh 3vw; border: 0;
  background: transparent; overflow: auto;
}
.zoom-dialog::backdrop { background: rgba(23, 23, 23, 0.86); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); }
.zoom-dialog img { margin: auto; max-width: 100%; max-height: 92vh; width: auto; height: auto; border-radius: 10px; background: #fff; cursor: zoom-out; }
.zoom-dialog[open] { display: grid; place-items: center; animation: fade 0.25s var(--ease); }
.zoom-close {
  position: fixed; top: 18px; right: 18px;
  display: grid; place-items: center; width: 42px; height: 42px;
  border: 1px solid rgba(237, 235, 230, 0.25); border-radius: 50%;
  background: rgba(23, 23, 23, 0.6); color: var(--dark-text);
}
.zoom-close svg { width: 18px; height: 18px; fill: none; }

.toast {
  position: fixed; left: 50%; bottom: 28px; z-index: 60;
  transform: translate(-50%, 12px); opacity: 0;
  padding: 10px 16px; border-radius: 10px;
  background: var(--ink); color: var(--paper); font-size: 13.5px;
  transition: opacity 0.25s, transform 0.25s var(--ease);
  pointer-events: none;
}
.toast.is-on { opacity: 1; transform: translate(-50%, 0); }

/* Motion */
@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
.hero-copy > *, .aa-strip { animation: rise 0.9s var(--ease) both; }
.hero-copy > :nth-child(2) { animation-delay: 0.06s; }
.hero-copy > :nth-child(3) { animation-delay: 0.16s; }
.aa-strip { animation-delay: 0.3s; }
.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.js .reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .reveal { opacity: 1; transform: none; }
}

/* Responsive */
@media (max-width: 1180px) {
  .nav-inner { gap: 28px; }
  .nav-links { gap: 20px; font-size: 13.5px; }
}

@media (max-width: 1080px) {
  .aa-row { grid-template-columns: 1fr; gap: 28px; }
  .chart { max-width: 680px; }
  .get-grid { grid-template-columns: 1fr; gap: 48px; }
  .matrix-row { grid-template-columns: 90px minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr); gap: 20px; }
  .listen-grid { grid-template-columns: minmax(0, 1fr); gap: 36px; margin-top: 56px; }
  .tabs {
    position: static; flex-direction: row; gap: 4px;
    width: max-content; max-width: 100%;
    padding: 5px;
    overflow-x: auto;
    border: 1px solid var(--line); border-radius: 999px;
    background: var(--card);
  }
  .tab { flex: none; margin: 0; padding: 9px 16px; border: 0; border-radius: 999px; font-size: 14px; }
  .tab-no { display: none; }
  .tab[aria-selected="true"] { background: var(--ink); color: var(--paper); }
}

@media (max-width: 960px) {
  .nav-links { display: none; }
  .nav-cta { margin-left: auto; }
}

@media (max-width: 820px) {
  .aa-items { grid-template-columns: 1fr; }
  .aa-item, .aa-item + .aa-item { padding: 18px 0; border-left: 0; }
  .aa-item + .aa-item { border-top: 1px solid var(--line); }
  .bench-intro { grid-template-columns: 1fr; gap: 12px; }
  .figure-pair, .variants { grid-template-columns: 1fr; }
  .samples { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .samples > .sample:last-child:nth-child(odd) { grid-column: 1 / -1; }
  .matrix-head { display: none; }
  .matrix-row { grid-template-columns: 1fr 1fr; gap: 12px 16px; padding: 18px 18px 20px; }
  .matrix-lang { grid-column: 1 / -1; font: 500 11px/1.2 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
  .matrix-text { grid-column: 1 / -1; font-size: 17px; color: var(--ink); }
  .matrix-cell { display: grid; gap: 8px; }
  .matrix-cell-label { display: block; font-size: 13px; font-weight: 600; }
  .player-sm .bars { gap: 1px; }
  .footer-inner { grid-template-columns: 1fr; gap: 24px; }
}

@media (max-width: 640px) {
  .wrap { width: min(1160px, 100% - 40px); }
  .nav { height: 60px; }
  .hero { padding: 124px 0 0; }
  .hero-foot { gap: 28px; margin-top: 22px; }
  .hero-actions { gap: 8px; }
  .hero-actions .btn { height: 42px; padding: 0 16px; font-size: 14px; }
  .aa-strip { margin-top: 72px; }
  .aa-rank { font-size: 60px; }
  .video-band { padding-top: 56px; }
  .video-frame { border-radius: 14px; }
  .video-play { bottom: 14px; gap: 10px; padding: 5px 16px 5px 5px; }
  .video-play-icon { width: 34px; height: 34px; }
  .video-play-text { font-size: 13.5px; }
  .video-play-text span { font-size: 12px; }
  .section { padding: 88px 0; }
  #architecture { padding-top: 88px; }
  .lead { font-size: 17px; }
  .chart { padding: 18px 18px 14px; }
  .chart-rows li { grid-template-columns: 1.4em minmax(0, 1fr) 3.4em; gap: 4px 10px; font-size: 13.5px; }
  .chart-rows .c-bar { grid-column: 2 / -1; grid-row: 2; height: 8px; }
  .chart-rows li { padding-bottom: 4px; }
  .aa-row { margin-top: 44px; padding-top: 44px; }
  .aa-copy p { font-size: 16px; }
  .variant { padding: 24px 22px 22px; }
  .variant h3 { font-size: 32px; }
  .specs div { grid-template-columns: 96px 1fr; }
  .samples, .samples.samples-2 { grid-template-columns: 1fr; }
  .code-card pre { font-size: 12px; padding: 18px; }
  .zoom-dialog { padding: 2vh 0; overflow: auto; }
  .zoom-dialog[open] { place-items: center start; }
  .zoom-dialog img { max-width: none; max-height: none; width: 220vw; }
}