/* ============================================================================
   BassFish Relay — design system
   The visual language is OpenRouter's, reproduced from its own published tokens so
   the product reads as the same class of tool: Plus Jakarta Sans for UI, Gordita
   Bold for display, a zinc neutral ramp, one indigo primary, 8px controls, a 56px
   navigation bar, and light as the default theme.

   BassFish adds exactly one thing to that language: the wordmark, set in a
   handwriting face (Caveat), because the owner asked for an English handwritten
   logotype. Everything else is the same surface, recoloured to our brand.
   ========================================================================== */

@font-face {
  font-family: "BassFish Sans";
  src: url("fonts/plus-jakarta-sans.woff2") format("woff2");
  font-weight: 200 800;
  font-display: swap;
  font-style: normal;
}
@font-face {
  font-family: "BassFish Display";
  src: url("fonts/gordita-bold.woff2") format("woff2");
  font-weight: 700;
  font-display: swap;
}
@font-face {
  font-family: "BassFish Hand";
  src: url("fonts/caveat-700.woff2") format("woff2");
  font-weight: 700;
  font-display: swap;
}
@font-face {
  font-family: "BassFish Mono";
  src: url("fonts/geist-mono-400.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}

:root {
  --link: 234 89.5% 73.9%;
  --link-hover: 239 83.5% 66.7%;
  --accent: 240 4.8% 95.9%;
  --accent-foreground: 240 5.9% 10%;
  --background: 0 0% 100%;
  --foreground: 240 10% 3.9%;
  --inverse: 240 10% 3.9%;
  --inverse-foreground: 0 0% 100%;
  --secondary: 240 4.8% 95.9%;
  --secondary-foreground: 240 5.9% 10%;
  --muted: 240 4.8% 95.9%;
  --muted-foreground: 240 3.8% 46.1%;
  --primary: 239 84% 63%;
  --primary-ink: 239 72% 45%;
  --primary-foreground: 0 0% 98%;
  --popover: 0 0% 100%;
  --popover-foreground: 240 10% 3.9%;
  --border: 240 5.9% 90%;
  --input: 240 5.9% 90%;
  --card: 0 0% 100%;
  --card-foreground: 240 10% 3.9%;
  --destructive: 0 84.2% 60.2%;
  --destructive-foreground: 0 0% 98%;
  --warning: 32 95% 44%;
  --warning-foreground: 24 40% 22%;
  --ring: 240 5% 64.9%;
  --success: 142 71% 29%;
  --success-foreground: 0 0% 98%;
  --info: 234 89.5% 73.9%;
  --sidebar: 0 0% 98%;
  --sidebar-foreground: 240 10% 3.9%;
  --sidebar-accent: 240 4.8% 95.9%;
  --sidebar-border: 240 5.9% 90%;

  --radius: 0.5rem;
  --radius-sm: 6px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-pill: 999px;
  --nav-h: 3.5rem;
  --sidebar-w: 236px;
  --max: 1240px;

  --font-sans: "BassFish Sans", "PingFang SC", "Microsoft YaHei", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-brand: "BassFish Display", "BassFish Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-hand: "BassFish Hand", "Segoe Script", cursive;
  --font-mono: "BassFish Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  color-scheme: light;
}

.dark {
  --background: 224 7% 4%;
  --foreground: 206 6% 88%;
  --inverse: 206 6% 88%;
  --inverse-foreground: 224 7% 4%;
  --secondary: 240 3.7% 15.9%;
  --secondary-foreground: 0 0% 98%;
  --accent: 240 3.7% 15.9%;
  --accent-foreground: 0 0% 98%;
  --muted: 240 3.7% 15.9%;
  --muted-foreground: 240 5% 64.9%;
  --popover: 240 10% 3.9%;
  --popover-foreground: 0 0% 98%;
  --border: 240 4.7% 24.9%;
  --input: 240 4.7% 24.9%;
  --card: 240 10% 3.9%;
  --card-foreground: 0 0% 98%;
  --ring: 240 4.9% 83.9%;
  --success: 142 71% 65%;
  --warning: 42 100% 62%;
  --primary-ink: 239 92% 78%;
  --sidebar: 240 10% 3.9%;
  --sidebar-foreground: 0 0% 98%;
  --sidebar-accent: 240 3.7% 15.9%;
  --sidebar-border: 240 4.7% 24.9%;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { padding: 0; margin: 0; }
body {
  background: hsl(var(--background));
  color: hsl(var(--foreground));
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; color: inherit; }
h1, h2, h3, h4 { margin: 0; font-family: var(--font-brand); font-weight: 700; letter-spacing: -0.02em; line-height: 1.15; }
p { margin: 0; }
code, pre, kbd, .mono { font-family: var(--font-mono); }
::selection { background: hsl(var(--primary) / 0.22); }

/* ---------- primitives ---------- */
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.muted { color: hsl(var(--muted-foreground)); }
.small { font-size: 13px; }
.tiny { font-size: 12px; }
.eyebrow { font-size: 12px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: hsl(var(--muted-foreground)); }
.stack { display: flex; flex-direction: column; }
.row { display: flex; align-items: center; }
.gap6 { gap: 6px; } .gap8 { gap: 8px; } .gap12 { gap: 12px; } .gap16 { gap: 16px; } .gap24 { gap: 24px; }
.grow { flex: 1; }
.hide { display: none !important; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  height: 36px; padding: 0 14px; border-radius: var(--radius);
  border: 1px solid hsl(var(--border)); background: hsl(var(--background));
  color: hsl(var(--foreground)); font-size: 14px; font-weight: 600; white-space: nowrap;
  cursor: pointer; transition: background .18s var(--ease), border-color .18s var(--ease), transform .12s var(--ease), color .18s var(--ease);
}
.btn:hover { background: hsl(var(--secondary)); }
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: 2px solid hsl(var(--ring)); outline-offset: 2px; }
.btn-primary { background: hsl(var(--primary)); border-color: hsl(var(--primary)); color: hsl(var(--primary-foreground)); }
.btn-primary:hover { background: hsl(var(--primary) / 0.9); border-color: hsl(var(--primary) / 0.9); }
.btn-ghost { border-color: transparent; background: transparent; }
.btn-ghost:hover { background: hsl(var(--secondary)); }
.btn-danger { color: hsl(var(--destructive)); border-color: hsl(var(--destructive) / 0.35); }
.btn-danger:hover { background: hsl(var(--destructive) / 0.08); }
.btn-sm { height: 30px; padding: 0 10px; font-size: 13px; border-radius: var(--radius-sm); }
.btn-block { width: 100%; }
.btn[disabled] { opacity: .55; cursor: not-allowed; transform: none; }

.input, .textarea, .select {
  width: 100%; min-height: 38px; padding: 8px 12px; border-radius: var(--radius);
  border: 1px solid hsl(var(--input)); background: hsl(var(--background));
  transition: border-color .16s var(--ease), box-shadow .16s var(--ease);
}
.input:focus, .textarea:focus, .select:focus {
  outline: none; border-color: hsl(var(--primary)); box-shadow: 0 0 0 3px hsl(var(--primary) / 0.16);
}
.textarea { min-height: 108px; resize: vertical; line-height: 1.55; }
.field { display: flex; flex-direction: column; gap: 6px; }
.label { font-size: 13px; font-weight: 600; color: hsl(var(--foreground)); }
.hint { font-size: 12px; color: hsl(var(--muted-foreground)); }
.error-text { font-size: 12px; color: hsl(var(--destructive)); }
.form-note { font-size: 12.5px; color: hsl(var(--muted-foreground)); line-height: 1.6; }

.card {
  border: 1px solid hsl(var(--border)); border-radius: var(--radius-lg);
  background: hsl(var(--card)); color: hsl(var(--card-foreground));
}
.card-pad { padding: 20px; }
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 20px; border-bottom: 1px solid hsl(var(--border)); }
.panel-title { font-size: 14.5px; font-weight: 700; letter-spacing: -0.01em; }

.tag {
  display: inline-flex; align-items: center; gap: 5px; height: 22px; padding: 0 8px;
  border-radius: var(--radius-pill); border: 1px solid hsl(var(--border));
  font-size: 11.5px; font-weight: 600; color: hsl(var(--muted-foreground)); white-space: nowrap;
}
.tag-ok { color: hsl(var(--success)); border-color: hsl(var(--success) / .35); background: hsl(var(--success) / .08); }
.tag-warn { color: hsl(var(--warning)); border-color: hsl(var(--warning) / .35); background: hsl(var(--warning) / .10); }
.tag-bad { color: hsl(var(--destructive)); border-color: hsl(var(--destructive) / .35); background: hsl(var(--destructive) / .08); }
.tag-accent { color: hsl(var(--primary-ink)); border-color: hsl(var(--primary) / .35); background: hsl(var(--primary) / .10); }
.dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; display: inline-block; }

/* ---------- brand ---------- */
.brand { display: inline-flex; align-items: baseline; gap: 8px; }
.wordmark {
  font-family: var(--font-hand); font-size: 30px; font-weight: 700; line-height: 1;
  letter-spacing: 0.01em; padding-right: 2px;
}
.wordmark-sm { font-size: 24px; }
.brand-dot { color: hsl(var(--primary)); }
.alpha-pill {
  font-family: var(--font-sans); font-size: 10.5px; font-weight: 700; letter-spacing: .06em;
  text-transform: uppercase; color: hsl(var(--muted-foreground));
  border: 1px solid hsl(var(--border)); border-radius: var(--radius-pill); padding: 2px 7px;
  transform: translateY(-3px);
}

/* ---------- site nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 40; height: var(--nav-h);
  border-bottom: 1px solid hsl(var(--border));
  background: hsl(var(--background) / .82);
  backdrop-filter: saturate(180%) blur(12px);
}
.nav-inner { max-width: var(--max); margin: 0 auto; height: 100%; padding: 0 24px; display: flex; align-items: center; gap: 24px; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-link {
  padding: 6px 10px; border-radius: var(--radius-sm); font-size: 14px; font-weight: 500;
  color: hsl(var(--muted-foreground)); transition: color .16s var(--ease), background .16s var(--ease);
}
.nav-link:hover, .nav-link.on { color: hsl(var(--foreground)); background: hsl(var(--secondary)); }
.nav-right { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.icon-btn {
  width: 32px; height: 32px; display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm); border: 1px solid transparent; background: transparent; cursor: pointer;
  color: hsl(var(--muted-foreground));
}
.icon-btn:hover { background: hsl(var(--secondary)); color: hsl(var(--foreground)); }

/* ---------- landing ---------- */
.hero { padding: 72px 0 56px; border-bottom: 1px solid hsl(var(--border)); }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
.hero h1 { font-size: clamp(34px, 4.4vw, 52px); }
.hero-sub { margin-top: 16px; font-size: 16.5px; color: hsl(var(--muted-foreground)); max-width: 46ch; }
.hero-actions { margin-top: 28px; display: flex; gap: 10px; flex-wrap: wrap; }
.hero-note { margin-top: 14px; font-size: 12.5px; color: hsl(var(--muted-foreground)); }
.hero-art {
  border: 1px solid hsl(var(--border)); border-radius: var(--radius-xl); overflow: hidden;
  background: hsl(var(--card)); box-shadow: 0 24px 60px -32px hsl(var(--foreground) / .25);
}
.hero-art-head { display: flex; align-items: center; gap: 6px; padding: 10px 14px; border-bottom: 1px solid hsl(var(--border)); background: hsl(var(--muted) / .5); }
.hero-art-dot { width: 9px; height: 9px; border-radius: 50%; background: hsl(var(--border)); }
.hero-art-body { padding: 16px 18px 20px; }
.code {
  font-family: var(--font-mono); font-size: 12.5px; line-height: 1.75;
  white-space: pre-wrap; word-break: break-word; color: hsl(var(--muted-foreground));
  overflow-x: auto;
}
@media (max-width: 720px) {
  /* A shell command must not wrap mid-token: scroll it instead. */
  .code { white-space: pre; word-break: normal; }
}
.code .k { color: hsl(var(--primary-ink)); }
.code .s { color: hsl(var(--success)); }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-bottom: 1px solid hsl(var(--border)); }
.stat { padding: 26px 0; }
.stat + .stat { border-left: 1px solid hsl(var(--border)); padding-left: 32px; }
.stat-value { font-family: var(--font-brand); font-size: 30px; letter-spacing: -0.02em; }
.stat-label { font-size: 12.5px; color: hsl(var(--muted-foreground)); margin-top: 2px; }

.section { padding: 64px 0; border-bottom: 1px solid hsl(var(--border)); }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 28px; }
.section-head h2 { font-size: 26px; }
.section-head p { margin-top: 6px; color: hsl(var(--muted-foreground)); font-size: 14.5px; max-width: 62ch; }

.model-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.model-card { border: 1px solid hsl(var(--border)); border-radius: var(--radius-lg); padding: 16px 18px; background: hsl(var(--card)); transition: border-color .18s var(--ease), transform .18s var(--ease); }
.model-card:hover { border-color: hsl(var(--primary) / .45); transform: translateY(-2px); }
.model-card.locked { opacity: .72; background: hsl(var(--muted) / .35); }
.model-card.locked:hover { transform: none; border-color: hsl(var(--border)); }
.model-name { font-weight: 700; font-size: 14.5px; letter-spacing: -.01em; }
.model-id { font-family: var(--font-mono); font-size: 11.5px; color: hsl(var(--muted-foreground)); margin-top: 2px; }
.model-meta { margin-top: 12px; display: flex; align-items: center; justify-content: space-between; gap: 8px; }

.rules { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.rule { border: 1px solid hsl(var(--border)); border-radius: var(--radius-lg); padding: 18px; }
.rule h4 { font-size: 14px; margin-bottom: 6px; }
.rule p { font-size: 13px; color: hsl(var(--muted-foreground)); line-height: 1.6; }

.footer { padding: 40px 0 56px; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.footer-links { display: flex; gap: 18px; font-size: 13px; color: hsl(var(--muted-foreground)); }

/* ---------- auth pages ---------- */
.auth-wrap { min-height: calc(100dvh - var(--nav-h)); display: grid; place-items: center; padding: 48px 24px 64px; }
.auth-card { width: 100%; max-width: 430px; }
.auth-card.wide { max-width: 560px; }
.auth-head { text-align: center; margin-bottom: 22px; }
.auth-head h1 { font-size: 24px; }
.auth-head p { margin-top: 8px; font-size: 13.5px; color: hsl(var(--muted-foreground)); }
.auth-form { display: flex; flex-direction: column; gap: 16px; }
.auth-foot { margin-top: 18px; text-align: center; font-size: 13px; color: hsl(var(--muted-foreground)); }
.auth-foot a { color: hsl(var(--primary-ink)); font-weight: 600; }
.alert { border-radius: var(--radius); border: 1px solid hsl(var(--destructive) / .35); background: hsl(var(--destructive) / .08); color: hsl(var(--destructive)); font-size: 13px; padding: 9px 12px; }
.alert.ok { border-color: hsl(var(--success) / .35); background: hsl(var(--success) / .08); color: hsl(var(--success)); }
.alert.info { border-color: hsl(var(--border)); background: hsl(var(--muted)); color: hsl(var(--foreground)); }

/* ---------- app shell ---------- */
.shell { display: grid; grid-template-columns: var(--sidebar-w) 1fr; min-height: 100dvh; }
.sidebar { border-right: 1px solid hsl(var(--sidebar-border)); background: hsl(var(--sidebar)); padding: 14px 10px; display: flex; flex-direction: column; gap: 18px; position: sticky; top: 0; height: 100dvh; }
.side-brand { padding: 4px 8px 10px; }
.side-group { display: flex; flex-direction: column; gap: 2px; }
.side-label { font-size: 10.5px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: hsl(var(--muted-foreground)); padding: 8px 10px 4px; }
.side-link { display: flex; align-items: center; gap: 9px; padding: 7px 10px; border-radius: var(--radius-sm); font-size: 13.5px; font-weight: 500; color: hsl(var(--muted-foreground)); cursor: pointer; }
.side-link:hover { background: hsl(var(--sidebar-accent)); color: hsl(var(--foreground)); }
.side-link.on { background: hsl(var(--sidebar-accent)); color: hsl(var(--foreground)); font-weight: 600; }
.side-link svg { width: 15px; height: 15px; opacity: .8; }
.side-foot { margin-top: auto; border-top: 1px solid hsl(var(--sidebar-border)); padding-top: 12px; }
.side-user { display: flex; align-items: center; gap: 9px; padding: 6px 8px; border-radius: var(--radius-sm); }
.avatar { width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center; font-size: 11px; font-weight: 700; background: hsl(var(--primary) / .14); color: hsl(var(--primary)); }

.main { min-width: 0; display: flex; flex-direction: column; }
.topbar { height: var(--nav-h); border-bottom: 1px solid hsl(var(--border)); display: flex; align-items: center; gap: 12px; padding: 0 22px; background: hsl(var(--background) / .85); backdrop-filter: saturate(180%) blur(10px); position: sticky; top: 0; z-index: 30; }
.crumb { font-size: 13.5px; color: hsl(var(--muted-foreground)); }
.crumb b { color: hsl(var(--foreground)); font-weight: 600; }
.content { padding: 26px 22px 64px; max-width: 1180px; width: 100%; }
.page-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; margin-bottom: 22px; }
.page-head h1 { font-size: 22px; }
.page-head p { margin-top: 5px; font-size: 13.5px; color: hsl(var(--muted-foreground)); }

.metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 18px; }
.metric { border: 1px solid hsl(var(--border)); border-radius: var(--radius-lg); padding: 14px 16px; background: hsl(var(--card)); }
.metric-k { font-size: 12px; color: hsl(var(--muted-foreground)); display: flex; align-items: center; gap: 6px; }
.metric-v { font-family: var(--font-brand); font-size: 24px; letter-spacing: -.02em; margin-top: 6px; }
.metric-sub { font-size: 11.5px; color: hsl(var(--muted-foreground)); margin-top: 2px; }

.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th { text-align: left; font-size: 11.5px; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: hsl(var(--muted-foreground)); padding: 9px 14px; border-bottom: 1px solid hsl(var(--border)); white-space: nowrap; }
.table td { padding: 11px 14px; border-bottom: 1px solid hsl(var(--border) / .7); vertical-align: middle; }
.table tr:last-child td { border-bottom: 0; }
.table tbody tr:hover { background: hsl(var(--muted) / .4); }
.table .num { text-align: right; font-variant-numeric: tabular-nums; }
.table-wrap { overflow-x: auto; }

.key-chip { font-family: var(--font-mono); font-size: 12px; background: hsl(var(--muted)); border: 1px solid hsl(var(--border)); border-radius: var(--radius-sm); padding: 3px 7px; }
.empty { padding: 40px 20px; text-align: center; color: hsl(var(--muted-foreground)); font-size: 13.5px; }
.empty b { display: block; color: hsl(var(--foreground)); font-size: 14.5px; margin-bottom: 4px; }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid hsl(var(--border)); margin-bottom: 16px; }
.tab { padding: 8px 12px; font-size: 13px; font-weight: 600; color: hsl(var(--muted-foreground)); border-bottom: 2px solid transparent; cursor: pointer; margin-bottom: -1px; }
.tab.on { color: hsl(var(--foreground)); border-bottom-color: hsl(var(--primary)); }

.kv { display: grid; grid-template-columns: 150px 1fr; gap: 8px 16px; font-size: 13px; }
.kv dt { color: hsl(var(--muted-foreground)); }
.kv dd { margin: 0; }

.notice { display: flex; gap: 10px; padding: 12px 14px; border: 1px solid hsl(var(--border)); border-radius: var(--radius); background: hsl(var(--muted) / .5); font-size: 13px; line-height: 1.6; }
.notice b { font-weight: 700; }

.skeleton { background: linear-gradient(90deg, hsl(var(--muted)) 25%, hsl(var(--muted) / .55) 37%, hsl(var(--muted)) 63%); background-size: 400% 100%; animation: shimmer 1.4s ease infinite; border-radius: var(--radius-sm); height: 12px; }
@keyframes shimmer { 0% { background-position: 100% 50%; } 100% { background-position: 0 50%; } }

.modal-back { position: fixed; inset: 0; z-index: 60; background: hsl(var(--foreground) / .35); backdrop-filter: blur(2px); display: grid; place-items: center; padding: 20px; }
.modal { width: 100%; max-width: 460px; background: hsl(var(--popover)); border: 1px solid hsl(var(--border)); border-radius: var(--radius-lg); box-shadow: 0 30px 80px -30px hsl(var(--foreground) / .5); }
.modal-head { padding: 16px 18px; border-bottom: 1px solid hsl(var(--border)); font-weight: 700; font-size: 14.5px; }
.modal-body { padding: 18px; display: flex; flex-direction: column; gap: 14px; }
.modal-foot { padding: 14px 18px; border-top: 1px solid hsl(var(--border)); display: flex; justify-content: flex-end; gap: 8px; }

.toast-host { position: fixed; right: 18px; bottom: 18px; z-index: 80; display: flex; flex-direction: column; gap: 8px; }
.toast { border: 1px solid hsl(var(--border)); background: hsl(var(--popover)); color: hsl(var(--popover-foreground)); border-radius: var(--radius); padding: 10px 14px; font-size: 13px; box-shadow: 0 14px 40px -18px hsl(var(--foreground) / .45); animation: toast-in .22s var(--ease); }
.toast.ok { border-left: 3px solid hsl(var(--success)); }
.toast.bad { border-left: 3px solid hsl(var(--destructive)); }
@keyframes toast-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* ---------- responsive ---------- */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .model-grid, .rules { grid-template-columns: repeat(2, 1fr); }
  .metrics { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed; inset: 0 auto 0 0; width: 260px; z-index: 50; transform: translateX(-100%);
    transition: transform .22s var(--ease); box-shadow: 0 0 60px hsl(var(--foreground) / .18);
  }
  .sidebar.open { transform: none; }
  .scrim { position: fixed; inset: 0; background: hsl(var(--foreground) / .35); z-index: 45; }
  .content { padding: 20px 16px 56px; }
}
@media (max-width: 720px) {
  .nav-links { display: none; }
  .hero { padding: 40px 0 36px; }
  .hero h1 { font-size: 31px; }
  .stats { grid-template-columns: 1fr; }
  .stat + .stat { border-left: 0; border-top: 1px solid hsl(var(--border)); padding-left: 0; }
  .model-grid, .rules { grid-template-columns: 1fr; }
  .section { padding: 44px 0; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 10px; }
  .metrics { grid-template-columns: 1fr 1fr; }
  .kv { grid-template-columns: 1fr; gap: 2px 0; }
  .kv dt { margin-top: 8px; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}