/* matrix-compute-website — zero-dependency stylesheet */

:root {
  --bg: #070b16;
  --bg-2: #0b1122;
  --panel: #0f172a;
  --panel-2: #131d35;
  --border: #1e293b;
  --border-2: #2a3a5a;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --faint: #64748b;
  --accent: #f7931a; /* bitcoin orange */
  --accent-2: #5eead4; /* verified teal */
  --accent-3: #818cf8;
  --danger: #f87171;
  --warn: #fbbf24;
  --ok: #34d399;
  --radius: 12px;
  --radius-sm: 8px;
  --mono: ui-monospace, "JetBrains Mono", "Cascadia Code", "SF Mono", Menlo, Consolas, monospace;
  --sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --max: 1180px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 85% -10%, rgba(247, 147, 26, 0.10), transparent 60%),
    radial-gradient(900px 500px at -10% 10%, rgba(94, 234, 212, 0.07), transparent 60%),
    var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }
img, svg, video, iframe { max-width: 100%; }
code, pre, kbd { font-family: var(--mono); }
:not(pre) > code {
  background: rgba(148, 163, 184, 0.12);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 0.05em 0.35em;
  font-size: 0.88em;
  color: #f1f5f9;
}
kbd {
  border: 1px solid var(--border-2);
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: 0 0.35em;
  font-size: 0.8em;
  color: var(--muted);
}
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
[hidden] { display: none !important; }
.skip-link { position: absolute; left: -999px; top: 8px; background: var(--accent); color: #000; padding: 6px 12px; border-radius: 6px; z-index: 100; }
.skip-link:focus { left: 8px; }

.container { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.muted { color: var(--muted); }
.small { font-size: 0.82rem; }
.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.accent { color: var(--accent); }
.teal { color: var(--accent-2); }

/* ------------------------------------------------------------------ header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(7, 11, 22, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.site-header .container { display: flex; align-items: center; gap: 24px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; letter-spacing: -0.01em; }
.brand:hover { text-decoration: none; }
.brand img { width: 28px; height: 28px; }
.brand small { color: var(--faint); font-weight: 500; font-family: var(--mono); font-size: 0.7rem; }
#site-nav { display: flex; gap: 4px; margin-left: auto; align-items: center; }
#site-nav a { color: var(--muted); padding: 6px 10px; border-radius: 6px; font-size: 0.92rem; }
#site-nav a:hover, #site-nav a[aria-current="page"] { color: var(--text); background: rgba(148, 163, 184, 0.08); text-decoration: none; }
.nav-toggle { display: none; margin-left: auto; background: none; border: 1px solid var(--border-2); color: var(--text); border-radius: 6px; padding: 6px 10px; cursor: pointer; }

/* ------------------------------------------------------------------ buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px; border-radius: 999px;
  font-weight: 600; font-size: 0.95rem;
  border: 1px solid var(--border-2); color: var(--text); background: var(--panel);
  cursor: pointer; transition: transform 0.12s, border-color 0.12s, background 0.12s;
}
.btn:hover { text-decoration: none; border-color: var(--muted); transform: translateY(-1px); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #111; }
.btn-primary:hover { background: #ffa53a; border-color: #ffa53a; }
.btn-sm { padding: 6px 12px; font-size: 0.85rem; }

/* ------------------------------------------------------------------ status pill */
.status-pill {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.8rem; font-weight: 600; font-family: var(--mono);
  padding: 4px 10px; border-radius: 999px;
  border: 1px solid var(--border-2); background: var(--panel); color: var(--muted);
}
.status-pill .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--faint); }
.status-pill[data-status="live"] { color: var(--ok); border-color: rgba(52, 211, 153, 0.4); }
.status-pill[data-status="live"] .dot { background: var(--ok); box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.6); animation: pulse 2s infinite; }
.status-pill[data-status="connecting"] .dot, .status-pill[data-status="reconnecting"] .dot { background: var(--warn); }
.status-pill[data-status="connecting"], .status-pill[data-status="reconnecting"] { color: var(--warn); }
.status-pill[data-status="offline"] { color: var(--danger); border-color: rgba(248, 113, 113, 0.4); }
.status-pill[data-status="offline"] .dot { background: var(--danger); }
.status-pill[data-status="demo"] { color: var(--accent-3); border-color: rgba(129, 140, 248, 0.45); }
.status-pill[data-status="demo"] .dot { background: var(--accent-3); }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.6); } 70% { box-shadow: 0 0 0 8px rgba(52, 211, 153, 0); } 100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0); } }
@media (prefers-reduced-motion: reduce) { .status-pill .dot { animation: none !important; } html { scroll-behavior: auto; } }

/* ------------------------------------------------------------------ hero */
.hero { padding: 72px 0 56px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: start; }
.eyebrow { font-family: var(--mono); font-size: 0.8rem; color: var(--accent); letter-spacing: 0.06em; text-transform: uppercase; margin: 0 0 16px; }
.hero h1 { font-size: clamp(2.1rem, 4.4vw, 3.4rem); line-height: 1.08; letter-spacing: -0.03em; margin: 0 0 20px; }
.hero h1 .grad { background: linear-gradient(90deg, var(--accent), #ffd29a 45%, var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lede { font-size: 1.12rem; color: var(--muted); max-width: 36em; margin: 0 0 28px; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 28px; }
.hero-live { display: flex; flex-wrap: wrap; gap: 18px; align-items: center; font-size: 0.9rem; color: var(--muted); }
.hero-live strong { color: var(--text); font-variant-numeric: tabular-nums; }
.audience { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 28px; }
.audience a { display: block; padding: 14px 16px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: rgba(15, 23, 42, 0.6); color: var(--text); }
.audience a:hover { border-color: var(--border-2); text-decoration: none; }
.audience b { display: block; font-size: 0.95rem; }
.audience span { font-size: 0.82rem; color: var(--muted); }

/* ------------------------------------------------------------------ code / tabs */
.code-card { border: 1px solid var(--border); border-radius: var(--radius); background: var(--panel); overflow: hidden; box-shadow: 0 30px 80px -40px rgba(0, 0, 0, 0.8); }
.code-card + .code-card { margin-top: 16px; }
.tablist { display: flex; gap: 2px; padding: 8px 8px 0; background: var(--bg-2); border-bottom: 1px solid var(--border); overflow-x: auto; }
.tablist [role="tab"] {
  background: none; border: 0; border-bottom: 2px solid transparent;
  color: var(--muted); font: 600 0.85rem var(--mono); padding: 8px 12px; cursor: pointer; white-space: nowrap;
}
.tablist [role="tab"][aria-selected="true"] { color: var(--text); border-bottom-color: var(--accent); }
pre {
  position: relative; margin: 0; padding: 18px 20px; overflow-x: auto;
  font-size: 0.86rem; line-height: 1.65; background: var(--panel); color: #cbd5e1;
  tab-size: 4;
}
.doc-block pre, .prose pre { border: 1px solid var(--border); border-radius: var(--radius-sm); margin: 14px 0; }
.copy-btn {
  position: absolute; top: 10px; right: 10px;
  font: 600 0.72rem var(--mono); color: var(--muted);
  background: var(--panel-2); border: 1px solid var(--border-2); border-radius: 6px; padding: 3px 8px;
  cursor: pointer; opacity: 0; transition: opacity 0.15s;
}
pre:hover .copy-btn, .copy-btn:focus-visible { opacity: 1; }
.tok-k { color: #c084fc; } .tok-s { color: #86efac; } .tok-c { color: var(--faint); font-style: italic; } .tok-f { color: #7dd3fc; } .tok-n { color: #fdba74; } .tok-p { color: var(--accent); }

.video-slot {
  margin-top: 16px; aspect-ratio: 16 / 9; border-radius: var(--radius); overflow: hidden;
  border: 1px dashed var(--border-2); background: repeating-linear-gradient(45deg, rgba(148,163,184,0.03) 0 12px, transparent 12px 24px), var(--bg-2);
  display: grid; place-items: center; text-align: center; color: var(--muted);
}
.video-slot.has-video { border-style: solid; background: #000; }
.video-slot iframe, .video-slot video { width: 100%; height: 100%; border: 0; display: block; }
.video-slot .play { width: 56px; height: 56px; border-radius: 50%; border: 2px solid var(--border-2); display: grid; place-items: center; margin: 0 auto 10px; }

/* ------------------------------------------------------------------ sections */
section.band { padding: 80px 0; border-top: 1px solid var(--border); }
section.band.alt { background: linear-gradient(180deg, rgba(15, 23, 42, 0.55), rgba(15, 23, 42, 0)); }
.section-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: end; gap: 16px; margin-bottom: 32px; }
.section-head h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); letter-spacing: -0.02em; margin: 6px 0 8px; line-height: 1.15; }
.section-head p { margin: 0; color: var(--muted); max-width: 44em; }
.kicker { font-family: var(--mono); font-size: 0.75rem; color: var(--accent-2); letter-spacing: 0.08em; text-transform: uppercase; }

.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.card { border: 1px solid var(--border); border-radius: var(--radius); background: rgba(15, 23, 42, 0.7); padding: 22px; }
.card h3 { margin: 0 0 8px; font-size: 1.08rem; letter-spacing: -0.01em; }
.card p { margin: 0 0 12px; color: var(--muted); font-size: 0.95rem; }
.card p:last-child { margin-bottom: 0; }
.card .icon { width: 36px; height: 36px; border-radius: 9px; display: grid; place-items: center; background: rgba(247, 147, 26, 0.12); color: var(--accent); font-family: var(--mono); font-weight: 700; margin-bottom: 14px; }
.card ul { margin: 8px 0 0; padding-left: 18px; color: var(--muted); font-size: 0.92rem; }
.card .tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }

/* ------------------------------------------------------------------ dashboard */
.stat { border: 1px solid var(--border); border-radius: var(--radius); background: var(--panel); padding: 18px 20px; }
.stat .label { font-size: 0.78rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; }
.stat .value { font-size: 1.8rem; font-weight: 700; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; margin-top: 4px; }
.stat .sub { font-size: 0.8rem; color: var(--faint); }
.stat.hl .value { color: var(--accent); }
.dash-meta { display: flex; flex-wrap: wrap; gap: 18px; align-items: center; font-size: 0.82rem; color: var(--muted); }
.dash-meta code { font-size: 0.78rem; }
.panel { border: 1px solid var(--border); border-radius: var(--radius); background: var(--panel); overflow: hidden; }
.panel-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 16px 20px; border-bottom: 1px solid var(--border); }
.panel-head h3 { margin: 0; font-size: 1rem; }
.panel-body { padding: 16px 20px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { padding: 11px 20px; text-align: left; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--faint); font-weight: 600; background: var(--bg-2); }
th.num { text-align: right; }
tbody tr:last-child td { border-bottom: 0; }
.row-highlight td { background: rgba(247, 147, 26, 0.06); }
.row-highlight td:first-child { box-shadow: inset 3px 0 0 var(--accent); }
.device-name { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-weight: 600; }
.bar { height: 4px; background: var(--border); border-radius: 4px; margin-top: 8px; overflow: hidden; max-width: 320px; }
.bar span { display: block; height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); border-radius: 4px; transition: width 0.4s; }
.badge { display: inline-block; font: 600 0.68rem var(--mono); padding: 2px 7px; border-radius: 999px; border: 1px solid var(--border-2); color: var(--muted); letter-spacing: 0.02em; }
.badge-gpu { color: var(--accent); border-color: rgba(247, 147, 26, 0.35); }
.badge-confidential-cpu, .badge-tee { color: var(--accent-2); border-color: rgba(94, 234, 212, 0.35); }
.badge-cpu { color: var(--accent-3); border-color: rgba(129, 140, 248, 0.35); }
.empty { padding: 36px 20px; text-align: center; color: var(--muted); }
.notice { border: 1px solid var(--border-2); border-left: 3px solid var(--warn); border-radius: var(--radius-sm); padding: 12px 16px; background: rgba(251, 191, 36, 0.06); font-size: 0.9rem; color: var(--text); margin-bottom: 20px; }
.notice.info { border-left-color: var(--accent-3); background: rgba(129, 140, 248, 0.07); }
.notice.danger { border-left-color: var(--danger); background: rgba(248, 113, 113, 0.06); }
.kv { display: grid; grid-template-columns: 1fr auto; gap: 8px 16px; font-size: 0.9rem; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; font-weight: 600; }

/* ------------------------------------------------------------------ steps / misc */
.steps { counter-reset: step; list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.steps li { counter-increment: step; position: relative; padding-left: 44px; }
.steps li::before { content: counter(step); position: absolute; left: 0; top: 0; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; font: 700 0.85rem var(--mono); background: rgba(247, 147, 26, 0.12); color: var(--accent); border: 1px solid rgba(247, 147, 26, 0.35); }
.steps b { display: block; }
.steps p { margin: 2px 0 0; color: var(--muted); font-size: 0.92rem; }

.paper-card { display: grid; grid-template-columns: 160px 1fr; gap: 28px; align-items: center; }
.paper-cover { aspect-ratio: 8.5 / 11; border-radius: 6px; border: 1px solid var(--border-2); background: linear-gradient(160deg, #111a30, #0a0f1d); padding: 14px; display: flex; flex-direction: column; justify-content: space-between; font-family: var(--mono); font-size: 0.55rem; color: var(--faint); box-shadow: 0 20px 40px -20px #000; }
.paper-cover .t { color: var(--text); font-size: 0.68rem; font-weight: 700; line-height: 1.35; font-family: var(--sans); }
.paper-cover .lines span { display: block; height: 3px; background: var(--border); border-radius: 2px; margin: 4px 0; }
.coming-soon { display: inline-block; font: 700 0.7rem var(--mono); color: var(--warn); border: 1px solid rgba(251, 191, 36, 0.4); padding: 2px 8px; border-radius: 999px; letter-spacing: 0.06em; text-transform: uppercase; }

details.faq { border: 1px solid var(--border); border-radius: var(--radius-sm); background: rgba(15, 23, 42, 0.6); padding: 0 18px; }
details.faq + details.faq { margin-top: 10px; }
details.faq summary { cursor: pointer; padding: 14px 0; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary::after { content: "+"; color: var(--accent); font-family: var(--mono); }
details.faq[open] summary::after { content: "−"; }
details.faq > div { padding: 0 0 16px; color: var(--muted); font-size: 0.94rem; }
details.faq > div p { margin: 0 0 10px; }

/* ------------------------------------------------------------------ footer */
.site-footer { border-top: 1px solid var(--border); padding: 40px 0; color: var(--faint); font-size: 0.86rem; }
.site-footer .container { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 18px; }
.site-footer a { color: var(--muted); }

/* ------------------------------------------------------------------ docs layout */
.docs-layout { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 48px; padding-top: 32px; padding-bottom: 80px; }
.doc-sidebar { position: sticky; top: 80px; align-self: start; max-height: calc(100vh - 100px); overflow-y: auto; padding-right: 8px; }
.search-box { position: relative; margin-bottom: 18px; }
.search-box input {
  width: 100%; padding: 10px 40px 10px 12px; border-radius: var(--radius-sm);
  border: 1px solid var(--border-2); background: var(--panel); color: var(--text); font: inherit; font-size: 0.92rem;
}
.search-box input:focus { outline: none; border-color: var(--accent); }
.search-box kbd { position: absolute; right: 10px; top: 50%; transform: translateY(-50%); }
#doc-search-status { font-size: 0.78rem; color: var(--muted); min-height: 1.2em; margin: -10px 0 12px; }
.doc-nav h4 { font: 600 0.72rem var(--mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--faint); margin: 18px 0 6px; }
.doc-nav a { display: block; color: var(--muted); font-size: 0.9rem; padding: 4px 10px; border-left: 2px solid var(--border); }
.doc-nav a:hover { color: var(--text); text-decoration: none; }
.doc-nav a.active { color: var(--accent); border-left-color: var(--accent); }
.doc-section { padding-bottom: 24px; }
.doc-section > h2 { font-size: 1.7rem; letter-spacing: -0.02em; margin: 32px 0 6px; padding-top: 8px; }
.doc-section > .section-intro { color: var(--muted); margin: 0 0 8px; }
.doc-block { padding: 8px 0 18px; border-bottom: 1px solid var(--border); }
.doc-block:last-child { border-bottom: 0; }
.doc-block h3 { font-size: 1.18rem; margin: 18px 0 8px; letter-spacing: -0.01em; }
.doc-block h3 code { font-size: 0.95em; }
.doc-block p, .doc-block li { color: #cbd5e1; }
.doc-block table { margin: 12px 0; border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; display: block; overflow-x: auto; }
.doc-block th, .doc-block td { padding: 8px 14px; }
.doc-block td code { white-space: nowrap; }
.anchor { color: var(--faint); margin-left: 6px; font-weight: 400; opacity: 0; }
h2:hover .anchor, h3:hover .anchor { opacity: 1; }
mark.search-hit { background: rgba(247, 147, 26, 0.35); color: inherit; border-radius: 2px; padding: 0 1px; }
.callout { border: 1px solid var(--border-2); border-left: 3px solid var(--accent-2); background: rgba(94, 234, 212, 0.05); padding: 10px 14px; border-radius: var(--radius-sm); font-size: 0.92rem; margin: 12px 0; }
.callout.warn { border-left-color: var(--warn); background: rgba(251, 191, 36, 0.05); }
.formula { font-family: var(--mono); font-size: 0.88rem; background: var(--bg-2); border: 1px solid var(--border); border-radius: 6px; padding: 10px 14px; overflow-x: auto; color: #e2e8f0; }

/* ------------------------------------------------------------------ prose (paper) */
.prose { max-width: 860px; margin: 0 auto; padding: 56px 24px 80px; }
.prose h1 { font-size: clamp(1.8rem, 3.6vw, 2.5rem); line-height: 1.2; letter-spacing: -0.02em; margin-bottom: 12px; }
.prose h2 { margin-top: 2.2em; margin-bottom: 0.6em; font-size: 1.5rem; border-bottom: 1px solid var(--border); padding-bottom: 8px; }
.prose h3 { margin-top: 1.8em; margin-bottom: 0.5em; font-size: 1.22rem; }
.prose h4 { margin-top: 1.4em; margin-bottom: 0.4em; font-size: 1.02rem; color: var(--accent-3); }
.prose p, .prose li { color: #cbd5e1; line-height: 1.7; }
.prose ul, .prose ol { margin: 12px 0 16px 24px; padding: 0; }
.prose li { margin-bottom: 6px; }
.prose hr { border: 0; border-top: 1px solid var(--border); margin: 36px 0; }
.prose .paper-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin: 20px 0 28px; }
.prose .paper-meta { display: flex; flex-wrap: wrap; gap: 12px 24px; font-size: 0.88rem; color: var(--muted); margin: 10px 0 24px; align-items: center; }
.prose .paper-meta span { display: inline-flex; align-items: center; gap: 6px; }
.prose .paper-toc { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px 26px; margin: 28px 0 36px; }
.prose .paper-toc h3 { margin: 0 0 12px; font-size: 0.95rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--accent); }
.prose .paper-toc ol { margin: 0; padding-left: 20px; }
.prose .paper-toc li { margin-bottom: 6px; color: var(--muted); }
.prose .paper-toc a { color: var(--text); font-weight: 500; }
.prose .paper-toc a:hover { color: var(--accent); }
.prose .paper-toc li span { color: var(--faint); font-size: 0.84rem; margin-left: 6px; }
.prose .theorem-box { border: 1px solid var(--border-2); border-left: 3px solid var(--accent); background: rgba(247, 147, 26, 0.04); border-radius: var(--radius-sm); padding: 14px 18px; margin: 18px 0; }
.prose .theorem-title { font-weight: 700; color: var(--text); margin-bottom: 6px; font-size: 0.98rem; }
.prose .math-block { background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 12px 18px; margin: 14px 0; font-family: var(--mono); font-size: 0.9rem; overflow-x: auto; text-align: center; color: #f1f5f9; }
.prose .math-block.left { text-align: left; }
.prose .table-wrap { margin: 20px 0; border: 1px solid var(--border); border-radius: var(--radius-sm); overflow-x: auto; background: var(--panel); }
.prose .table-wrap table { margin: 0; width: 100%; }
.prose blockquote { border-left: 3px solid var(--accent-3); margin: 18px 0; padding: 10px 18px; background: rgba(129, 140, 248, 0.05); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.prose blockquote p { margin: 0; }

/* ------------------------------------------------------------------ responsive */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .docs-layout { grid-template-columns: 1fr; }
  .doc-sidebar { position: static; max-height: none; }
}
@media (max-width: 760px) {
  .nav-toggle { display: inline-block; }
  #site-nav { display: none; position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; align-items: stretch; background: var(--bg); border-bottom: 1px solid var(--border); padding: 12px 24px; }
  #site-nav.open { display: flex; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .audience { grid-template-columns: 1fr; }
  .paper-card { grid-template-columns: 1fr; }
  .paper-cover { max-width: 160px; }
  th, td { padding: 10px 12px; }
  section.band { padding: 56px 0; }
}