/* ==========================================================================
   GraphFinder Docs — Design System
   Dark devtool aesthetic derived from the logo palette (#111318 / #6366f1)
   ========================================================================== */

:root {
  --bg: #07080b;
  --bg-2: #0b0d12;
  --bg-3: #10131a;
  --panel: rgba(255, 255, 255, 0.025);
  --panel-hover: rgba(255, 255, 255, 0.045);
  --line: rgba(255, 255, 255, 0.07);
  --line-strong: rgba(255, 255, 255, 0.13);
  --text: #e7e9ef;
  --text-2: #b4b9c6;
  --muted: #7d8394;
  --accent: #818cf8;
  --accent-deep: #6366f1;
  --accent-glow: rgba(99, 102, 241, 0.35);
  --cyan: #38bdf8;
  --orange: #f97316;
  --green: #10b981;
  --pink: #f472b6;
  --yellow: #facc15;
  --radius: 14px;
  --radius-sm: 9px;
  --font: "Geist", "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Geist Mono", "JetBrains Mono", ui-monospace, "Cascadia Code", Consolas, monospace;
  --nav-h: 64px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
}

*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + var(--safe-top) + 20px);
  -webkit-text-size-adjust: 100%;
  overflow-x: clip;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  min-height: 100%;
  -webkit-overflow-scrolling: touch;
}

body.menu-open {
  overflow: hidden;
  touch-action: none;
}

::selection { background: var(--accent-deep); color: #fff; }

a { color: var(--accent); text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: #a5b4fc; }

img, svg { display: block; max-width: 100%; }

code, kbd, pre { font-family: var(--mono); }

:not(pre) > code {
  font-size: .86em;
  padding: .14em .42em;
  border-radius: 6px;
  background: rgba(129, 140, 248, 0.1);
  border: 1px solid rgba(129, 140, 248, 0.16);
  color: #c7d2fe;
  white-space: nowrap;
}

kbd {
  display: inline-block;
  font-size: .78em;
  padding: .1em .5em;
  border-radius: 6px;
  border: 1px solid var(--line-strong);
  border-bottom-width: 2px;
  background: var(--bg-3);
  color: var(--text);
}

.container { width: min(1200px, 100% - 48px); margin-inline: auto; }

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

/* --------------------------------------------------------------------------
   Navigation
   -------------------------------------------------------------------------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  height: calc(var(--nav-h) + var(--safe-top));
  padding-top: var(--safe-top);
  padding-left: var(--safe-left);
  padding-right: var(--safe-right);
  display: flex; align-items: center;
  background: rgba(7, 8, 11, 0.6);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease), background .3s var(--ease);
}
.nav.scrolled { border-bottom-color: var(--line); background: rgba(7, 8, 11, 0.82); }

.nav-inner { display: flex; align-items: center; gap: 28px; width: 100%; }

.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 600; letter-spacing: -0.01em; }
.brand:hover { color: var(--text); }
.brand img { width: 28px; height: 28px; border-radius: 7px; }
.brand .ver {
  font-family: var(--mono); font-size: 11px; font-weight: 500;
  padding: 2px 7px; border-radius: 999px;
  color: var(--accent); background: rgba(129,140,248,.1); border: 1px solid rgba(129,140,248,.2);
}

.nav-links { display: flex; gap: 4px; margin-left: 8px; }
.nav-links a {
  color: var(--text-2); font-size: 14px; padding: 6px 12px; border-radius: 8px;
  transition: color .2s, background .2s;
}
.nav-links a:hover { color: var(--text); background: var(--panel-hover); }

.nav-actions { display: flex; align-items: center; gap: 10px; margin-left: auto; }

.lang-switch {
  display: inline-flex; padding: 3px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--panel);
}
.lang-switch a {
  font-family: var(--mono); font-size: 12px; font-weight: 500;
  padding: 4px 10px; border-radius: 999px; color: var(--muted);
}
.lang-switch a.active { background: var(--text); color: var(--bg); }
.lang-switch a:not(.active):hover { color: var(--text); }

.icon-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 36px; padding: 0 14px; border-radius: 10px;
  font-size: 14px; font-weight: 500; color: var(--text);
  border: 1px solid var(--line-strong); background: var(--panel);
  transition: background .2s, border-color .2s, transform .2s var(--ease);
}
.icon-btn:hover { color: var(--text); background: var(--panel-hover); border-color: rgba(255,255,255,.22); }
.icon-btn svg { width: 17px; height: 17px; }

.menu-toggle { display: none; }

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  position: relative; display: inline-flex; align-items: center; gap: 10px;
  height: 48px; padding: 0 22px; border-radius: 12px;
  font-size: 15px; font-weight: 550; letter-spacing: -0.005em;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s;
  cursor: pointer; border: 0; font-family: inherit;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary {
  color: #fff;
  background: linear-gradient(180deg, #7c83ff 0%, #5b5ef0 100%);
  box-shadow: 0 0 0 1px rgba(255,255,255,.12) inset, 0 10px 30px -10px var(--accent-glow), 0 1px 0 rgba(255,255,255,.25) inset;
}
.btn-ghost { color: var(--text); background: var(--panel); border: 1px solid var(--line-strong); }

@media (hover: hover) {
  .btn-primary:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 0 0 1px rgba(255,255,255,.18) inset, 0 18px 40px -12px rgba(99,102,241,.6), 0 1px 0 rgba(255,255,255,.3) inset; }
  .btn-ghost:hover { color: var(--text); background: var(--panel-hover); transform: translateY(-2px); }
}
@media (hover: none) {
  .btn:active, .icon-btn:active { transform: scale(0.98); }
}

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex; align-items: center;
  padding: calc(var(--nav-h) + var(--safe-top) + 60px) 0 80px;
  overflow: hidden; isolation: isolate;
}
#graph-canvas {
  position: absolute; inset: 0; width: 100%; height: 100%; z-index: -2; opacity: .9;
  pointer-events: none;
}
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(ellipse 60% 50% at 50% 0%, rgba(99,102,241,.16), transparent 70%),
    radial-gradient(ellipse 80% 70% at 50% 50%, transparent 30%, var(--bg) 85%);
}
.hero::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 200px; z-index: -1;
  background: linear-gradient(to bottom, transparent, var(--bg));
}

.hero-content { text-align: center; max-width: 900px; margin-inline: auto; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 6px 14px 6px 6px; border-radius: 999px;
  font-size: 13px; color: var(--text-2);
  background: rgba(17, 19, 24, .7); border: 1px solid var(--line-strong);
  backdrop-filter: blur(10px);
  animation: rise .9s var(--ease) both;
}
.eyebrow .pill {
  font-family: var(--mono); font-size: 11px; font-weight: 600;
  padding: 3px 9px; border-radius: 999px; color: #fff;
  background: linear-gradient(90deg, var(--accent-deep), #8b5cf6);
}

.hero h1 {
  margin: 28px 0 20px;
  font-size: clamp(44px, 7.4vw, 92px);
  line-height: .98; letter-spacing: -0.045em; font-weight: 650;
  animation: rise .9s .08s var(--ease) both;
}
.hero h1 .grad {
  background: linear-gradient(100deg, #fff 10%, #c7d2fe 40%, #818cf8 65%, #38bdf8 95%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .lead {
  font-size: clamp(17px, 2vw, 20px); color: var(--text-2); max-width: 680px; margin: 0 auto 36px;
  animation: rise .9s .16s var(--ease) both;
}
.hero-ctas { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; animation: rise .9s .24s var(--ease) both; }

.hero-terminal {
  margin: 56px auto 0; max-width: 640px; text-align: left;
  animation: rise 1s .34s var(--ease) both;
}

.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  margin-top: 64px; border-radius: var(--radius); overflow: hidden;
  background: var(--line); border: 1px solid var(--line);
  animation: rise 1s .44s var(--ease) both;
}
.stat { background: rgba(11, 13, 18, .85); padding: 22px 20px; text-align: center; backdrop-filter: blur(8px); }
.stat b { display: block; font-size: 30px; font-weight: 650; letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.stat span { font-size: 13px; color: var(--muted); }

@keyframes rise { from { opacity: 0; transform: translateY(18px); filter: blur(4px); } to { opacity: 1; transform: none; filter: none; } }

/* --------------------------------------------------------------------------
   Terminal / code blocks
   -------------------------------------------------------------------------- */
.terminal, .code {
  position: relative;
  border-radius: var(--radius); overflow: hidden;
  background: linear-gradient(180deg, #0f1117, #0b0d12);
  border: 1px solid var(--line-strong);
  box-shadow: 0 30px 80px -30px rgba(0,0,0,.8), 0 0 0 1px rgba(0,0,0,.4);
}
.terminal-bar, .code-bar {
  display: flex; align-items: center; gap: 8px;
  height: 40px; padding: 0 14px;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono); font-size: 12px; color: var(--muted);
}
.dots { display: flex; gap: 6px; margin-right: 6px; }
.dots i { width: 10px; height: 10px; border-radius: 50%; background: #2a2e38; }
.dots i:nth-child(1) { background: #ff5f57; } .dots i:nth-child(2) { background: #febc2e; } .dots i:nth-child(3) { background: #28c840; }

pre {
  margin: 0; padding: 18px 20px; overflow-x: auto;
  font-size: 13.5px; line-height: 1.75; color: #d4d8e2;
  tab-size: 2;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
  touch-action: pan-x pan-y;
}
pre .c { color: #5f6678; font-style: italic; }
pre .p { color: var(--accent); user-select: none; }
pre .s { color: #86efac; }
pre .k { color: #7dd3fc; }
pre .n { color: #fdba74; }
pre .o { color: #f0abfc; }

.copy-btn {
  margin-left: auto; display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--mono); font-size: 11px; color: var(--muted);
  background: transparent; border: 1px solid var(--line); border-radius: 7px;
  padding: 4px 9px; cursor: pointer; transition: all .2s;
}
.copy-btn:hover { color: var(--text); border-color: var(--line-strong); background: var(--panel-hover); }
.copy-btn.done { color: var(--green); border-color: rgba(16,185,129,.4); }
.copy-btn svg { width: 13px; height: 13px; }

/* --------------------------------------------------------------------------
   Sections
   -------------------------------------------------------------------------- */
section.block { padding: 120px 0; position: relative; }
.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head.center { text-align: center; margin-inline: auto; }
.kicker {
  display: inline-block; font-family: var(--mono); font-size: 12px; font-weight: 500;
  letter-spacing: .12em; text-transform: uppercase; color: var(--accent); margin-bottom: 14px;
}
.section-head h2 { font-size: clamp(32px, 4.4vw, 52px); line-height: 1.05; letter-spacing: -0.035em; font-weight: 650; margin: 0 0 16px; }
.section-head p { color: var(--text-2); font-size: 18px; margin: 0; }

/* Feature bento */
.bento { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.card {
  position: relative; overflow: hidden;
  padding: 28px; border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.012));
  border: 1px solid var(--line);
  transition: border-color .35s var(--ease), transform .35s var(--ease), background .35s;
}
.card::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0;
  background: radial-gradient(400px circle at var(--mx, 50%) var(--my, 0%), rgba(129,140,248,.13), transparent 50%);
  transition: opacity .35s;
}
@media (hover: hover) {
  .card:hover { border-color: rgba(129,140,248,.28); transform: translateY(-3px); }
  .card:hover::before { opacity: 1; }
}
.card h3 { font-size: 19px; letter-spacing: -0.015em; margin: 18px 0 8px; font-weight: 600; }
.card p { color: var(--text-2); font-size: 15px; margin: 0; }
.card .ico {
  width: 42px; height: 42px; border-radius: 11px;
  display: grid; place-items: center;
  background: rgba(129,140,248,.1); border: 1px solid rgba(129,140,248,.22); color: var(--accent);
}
.card .ico svg { width: 21px; height: 21px; }
.card.span-2 { grid-column: span 2; }
.card.span-3 { grid-column: span 3; }
.card.span-4 { grid-column: span 4; }
.card .tagrow { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 18px; }
.tag {
  font-family: var(--mono); font-size: 11.5px; padding: 3px 9px; border-radius: 999px;
  border: 1px solid var(--line-strong); color: var(--text-2); background: rgba(255,255,255,.02);
}
.tag i { display: inline-block; width: 7px; height: 7px; border-radius: 50%; margin-right: 6px; vertical-align: 1px; }

/* Flow diagram */
.flow { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 8px; }
.flow-step { padding: 22px; border-radius: var(--radius-sm); border: 1px dashed var(--line-strong); background: rgba(255,255,255,.015); }
.flow-step .num { font-family: var(--mono); font-size: 12px; color: var(--accent); }
.flow-step h4 { margin: 6px 0 6px; font-size: 16px; }
.flow-step p { margin: 0; color: var(--text-2); font-size: 14px; }

/* --------------------------------------------------------------------------
   Documentation layout
   -------------------------------------------------------------------------- */
.docs-wrap { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 64px; align-items: start; }

.toc {
  position: sticky; top: calc(var(--nav-h) + var(--safe-top) + 28px);
  max-height: calc(100vh - var(--nav-h) - var(--safe-top) - 56px);
  overflow-y: auto;
  padding-right: 8px; scrollbar-width: thin; scrollbar-color: #2a2e38 transparent;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-y: contain;
}
.toc-title { font-family: var(--mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin: 0 0 12px 12px; }
.toc ol { list-style: none; margin: 0 0 20px; padding: 0; counter-reset: toc; }
.toc li a {
  display: block; padding: 6px 12px; border-radius: 8px;
  font-size: 14px; color: var(--muted);
  border-left: 2px solid transparent;
  transition: color .2s, background .2s, border-color .2s;
}
.toc li a:hover { color: var(--text); background: var(--panel); }
.toc li a.active { color: var(--text); background: rgba(129,140,248,.08); border-left-color: var(--accent); }

.doc { min-width: 0; }
.doc > section { padding-bottom: 72px; margin-bottom: 72px; border-bottom: 1px solid var(--line); }
.doc > section:last-child { border-bottom: 0; }
.doc h2 {
  display: flex; align-items: baseline; gap: 14px;
  font-size: clamp(28px, 3.2vw, 38px); letter-spacing: -0.03em; line-height: 1.15; font-weight: 650;
  margin: 0 0 18px;
}
.doc h2 .idx { font-family: var(--mono); font-size: 14px; font-weight: 500; color: var(--accent); letter-spacing: 0; }
.doc h3 { font-size: 21px; letter-spacing: -0.015em; margin: 44px 0 12px; font-weight: 600; }
.doc h4 { font-size: 16px; margin: 28px 0 8px; font-weight: 600; color: var(--text); }
.doc p, .doc li { color: var(--text-2); }
.doc p { margin: 0 0 16px; }
.doc ul, .doc ol { padding-left: 22px; margin: 0 0 18px; }
.doc li { margin-bottom: 6px; }
.doc li::marker { color: var(--accent); }
.doc strong { color: var(--text); font-weight: 600; }
.doc .code, .doc .terminal { margin: 18px 0 24px; }
.doc .lead-p { font-size: 18px; color: var(--text-2); }

.anchor { opacity: 0; margin-left: 6px; color: var(--muted); font-weight: 400; transition: opacity .2s; }
h2:hover .anchor, h3:hover .anchor { opacity: 1; }

/* Tables */
.table-wrap {
  overflow-x: auto; margin: 18px 0 26px; border: 1px solid var(--line); border-radius: var(--radius-sm);
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
  touch-action: pan-x pan-y;
}
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-weight: 600; color: var(--text); background: rgba(255,255,255,.025); font-size: 12.5px; letter-spacing: .02em; white-space: nowrap; }
td { color: var(--text-2); }
tr:last-child td { border-bottom: 0; }
tbody tr { transition: background .2s; }
tbody tr:hover { background: rgba(255,255,255,.018); }
td code { white-space: nowrap; }

/* Callouts */
.callout {
  display: flex; gap: 14px; padding: 16px 18px; margin: 20px 0 26px;
  border-radius: var(--radius-sm); border: 1px solid; font-size: 15px;
}
.callout svg { flex: 0 0 18px; width: 18px; height: 18px; margin-top: 3px; }
.callout p { margin: 0; color: inherit; }
.callout.info { border-color: rgba(56,189,248,.25); background: rgba(56,189,248,.06); color: #bae6fd; }
.callout.tip { border-color: rgba(16,185,129,.25); background: rgba(16,185,129,.06); color: #a7f3d0; }
.callout.warn { border-color: rgba(250,204,21,.25); background: rgba(250,204,21,.05); color: #fef08a; }

/* Tabs */
.tabs { margin: 18px 0 26px; }
.tab-list { display: flex; flex-wrap: wrap; gap: 4px; padding: 4px; border-radius: 12px; border: 1px solid var(--line); background: var(--panel); width: fit-content; max-width: 100%; }
.tab-list button {
  font-family: inherit; font-size: 13.5px; font-weight: 500; color: var(--muted);
  padding: 7px 14px; border-radius: 9px; border: 0; background: transparent; cursor: pointer;
  transition: color .2s, background .2s;
}
.tab-list button:hover { color: var(--text); }
.tab-list button[aria-selected="true"] { color: var(--text); background: rgba(255,255,255,.08); box-shadow: 0 0 0 1px var(--line-strong) inset; }
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fade .35s var(--ease); }
.tab-panel .code { margin-top: 12px; }
@keyframes fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

/* Tool cards */
.tool-group { margin: 26px 0 8px; font-family: var(--mono); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.tools { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.tool {
  padding: 18px; border-radius: var(--radius-sm); border: 1px solid var(--line);
  background: rgba(255,255,255,.015); transition: border-color .25s, background .25s;
}
.tool:hover { border-color: rgba(129,140,248,.3); background: rgba(129,140,248,.03); }
.tool h4 { margin: 0 0 6px; font-family: var(--mono); font-size: 14px; color: #c7d2fe; font-weight: 500; }
.tool p { margin: 0 0 10px; font-size: 14px; }
.tool .params { display: flex; flex-wrap: wrap; gap: 5px; }
.tool .params span { font-family: var(--mono); font-size: 11.5px; padding: 2px 8px; border-radius: 6px; background: rgba(255,255,255,.04); border: 1px solid var(--line); color: var(--text-2); }
.tool .params span.opt { color: var(--muted); border-style: dashed; }

/* Architecture diagram */
.arch { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: stretch; gap: 0; margin: 22px 0 30px; }
.arch-col { padding: 18px; border-radius: var(--radius-sm); border: 1px solid var(--line-strong); background: rgba(255,255,255,.02); }
.arch-col h5 { margin: 0 0 12px; font-family: var(--mono); font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; }
.arch-col ul { list-style: none; padding: 0; margin: 0; }
.arch-col li { font-size: 13.5px; padding: 7px 10px; margin-bottom: 6px; border-radius: 7px; background: rgba(255,255,255,.03); border: 1px solid var(--line); color: var(--text-2); }
.arch-arrow { display: grid; place-items: center; padding: 0 10px; color: var(--muted); font-family: var(--mono); font-size: 11px; text-align: center; }
.arch-arrow span { display: block; writing-mode: horizontal-tb; }
.arch-arrow::before { content: "⇄"; display: block; font-size: 22px; color: var(--accent); }
.arch-col.fe h5 { color: var(--cyan); }
.arch-col.be h5 { color: var(--orange); }
.arch-col.st h5 { color: var(--green); }

/* Timeline (changelog) */
.timeline { position: relative; padding-left: 28px; margin-top: 20px; }
.timeline::before { content: ""; position: absolute; left: 6px; top: 8px; bottom: 8px; width: 1px; background: linear-gradient(var(--accent), var(--line)); }
.release { position: relative; margin-bottom: 34px; }
.release::before {
  content: ""; position: absolute; left: -28px; top: 7px; width: 13px; height: 13px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--line-strong);
}
.release.current::before { border-color: var(--accent); background: var(--accent); box-shadow: 0 0 0 5px rgba(129,140,248,.18); }
.release-head { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-bottom: 8px; }
.release-head b { font-family: var(--mono); font-size: 16px; color: var(--text); }
.release-head .date { font-size: 13px; color: var(--muted); }
.badge { font-family: var(--mono); font-size: 11px; padding: 2px 8px; border-radius: 999px; }
.badge.latest { color: #fff; background: var(--accent-deep); }
.release ul { margin: 0; }
.release li { font-size: 14.5px; }

/* Download cards */
.downloads { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 18px 0 26px; }
.dl {
  display: flex; flex-direction: column; gap: 4px;
  padding: 18px; border-radius: var(--radius-sm); border: 1px solid var(--line);
  background: rgba(255,255,255,.02); color: var(--text);
  transition: border-color .25s, transform .25s var(--ease), background .25s;
}
@media (hover: hover) {
  .dl:hover { color: var(--text); border-color: rgba(129,140,248,.35); transform: translateY(-2px); background: rgba(129,140,248,.04); }
}
@media (hover: none) {
  .dl:active { transform: scale(0.98); }
}
.dl svg { width: 24px; height: 24px; margin-bottom: 8px; color: var(--text-2); }
.dl b { font-size: 15px; }
.dl span { font-family: var(--mono); font-size: 12px; color: var(--muted); }

/* Steps */
.steps { counter-reset: step; list-style: none; padding: 0 !important; }
.steps > li { position: relative; padding-left: 46px; margin-bottom: 22px; }
.steps > li::before {
  counter-increment: step; content: counter(step);
  position: absolute; left: 0; top: 0; width: 30px; height: 30px; border-radius: 9px;
  display: grid; place-items: center;
  font-family: var(--mono); font-size: 13px; font-weight: 600; color: var(--accent);
  background: rgba(129,140,248,.1); border: 1px solid rgba(129,140,248,.25);
}
.steps > li > strong:first-child { display: block; margin-bottom: 4px; }

/* CTA band */
.cta-band {
  position: relative; overflow: hidden; text-align: center;
  padding: 72px 32px; border-radius: 24px;
  border: 1px solid var(--line-strong);
  background:
    radial-gradient(ellipse 60% 80% at 50% 0%, rgba(99,102,241,.25), transparent 70%),
    linear-gradient(180deg, #0f1118, #090a0f);
}
.cta-band h2 { font-size: clamp(30px, 4vw, 46px); letter-spacing: -0.035em; margin: 0 0 14px; line-height: 1.08; }
.cta-band p { color: var(--text-2); margin: 0 auto 30px; max-width: 560px; font-size: 17px; }

/* Footer */
footer { border-top: 1px solid var(--line); padding: 48px 0 56px; margin-top: 40px; }
.foot { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px; color: var(--muted); font-size: 14px; }
.foot nav { display: flex; flex-wrap: wrap; gap: 20px; }
.foot nav a { color: var(--muted); }
.foot nav a:hover { color: var(--text); }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* Back to top */
.to-top {
  position: fixed;
  right: calc(20px + var(--safe-right));
  bottom: calc(20px + var(--safe-bottom));
  z-index: 40;
  width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center;
  color: var(--text); background: rgba(17,19,24,.85); border: 1px solid var(--line-strong);
  backdrop-filter: blur(10px); cursor: pointer;
  opacity: 0; transform: translateY(10px); pointer-events: none; transition: all .3s var(--ease);
  touch-action: manipulation;
}
.to-top.show { opacity: 1; transform: none; pointer-events: auto; }
.to-top:hover { border-color: var(--accent); }
.to-top svg { width: 18px; height: 18px; }

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1080px) {
  .docs-wrap { grid-template-columns: 1fr; gap: 0; }
  .toc { display: none; }
  .card.span-2, .card.span-3, .card.span-4 { grid-column: span 3; }
  .arch { grid-template-columns: 1fr; gap: 10px; }
  .arch-arrow { padding: 4px 0; }
  .arch-arrow::before { content: "⇅"; }
}

@media (max-width: 860px) {
  .nav-links {
    position: fixed;
    top: calc(var(--nav-h) + var(--safe-top));
    left: 0; right: 0;
    flex-direction: column; gap: 2px; margin: 0;
    padding: 12px 16px calc(24px + var(--safe-bottom));
    max-height: calc(100dvh - var(--nav-h) - var(--safe-top));
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    background: rgba(7,8,11,.97); border-bottom: 1px solid var(--line);
    transform: translateY(-8px); opacity: 0; pointer-events: none; transition: all .25s var(--ease);
  }
  .nav-links.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav-links a { padding: 12px; font-size: 15px; }
  .menu-toggle { display: inline-flex; min-width: 44px; min-height: 44px; padding: 0 12px; }
  .nav-actions .gh-label { display: none; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .tools, .downloads, .flow { grid-template-columns: 1fr; }
  section.block { padding: 88px 0; }
}

@media (max-width: 640px) {
  .container { width: calc(100% - 32px); }
  .bento { grid-template-columns: 1fr; }
  .card.span-2, .card.span-3, .card.span-4 { grid-column: auto; }
  .brand .ver { display: none; }
  .hero h1 { letter-spacing: -0.035em; }
  pre { font-size: 12.5px; }
  .cta-band { padding: 48px 20px; border-radius: 18px; }
}

@media (max-width: 480px) {
  .hero-ctas { flex-direction: column; width: 100%; }
  .hero-ctas .btn { width: 100%; justify-content: center; }
  .tab-list {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-x: contain;
    width: 100%;
    scrollbar-width: none;
  }
  .tab-list::-webkit-scrollbar { display: none; }
  .tab-list button { flex-shrink: 0; white-space: nowrap; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}