/* ============================================================
   AI Workstation Lab — Design System
   Dark base, neon cyan/violet accents, generous whitespace.
   ============================================================ */

:root {
  --bg-0: #07080d;
  --bg-1: #0c0e16;
  --bg-2: #11141f;
  --bg-3: #161a28;
  --bg-card: rgba(20, 24, 38, 0.72);
  --bg-card-strong: rgba(24, 28, 44, 0.88);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);

  --text-0: #f5f7ff;
  --text-1: #cfd3e3;
  --text-2: #8e93a8;
  --text-3: #5f6478;

  --accent-cyan: #5eead4;
  --accent-violet: #a78bfa;
  --accent-pink: #f472b6;
  --accent-amber: #fbbf24;
  --accent-emerald: #34d399;
  --accent-red: #f87171;
  --accent-coral: #fb7185;
  --accent-indigo: #818cf8;
  --accent-fuchsia: #e879f9;
  --accent-sky: #38bdf8;
  --accent-lime: #a3e635;
  --accent-orange: #fb923c;

  --grad-hero: linear-gradient(135deg, #5eead4 0%, #a78bfa 50%, #f472b6 100%);
  --grad-rail: linear-gradient(180deg, #5eead4 0%, #a78bfa 100%);
  --grad-card: linear-gradient(135deg, rgba(94, 234, 212, 0.10), rgba(167, 139, 250, 0.10));

  --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
  --shadow-deep: 0 24px 60px rgba(0, 0, 0, 0.5);

  --radius-s: 8px;
  --radius-m: 12px;
  --radius-l: 18px;
  --radius-xl: 24px;

  --font-sans: 'Inter', 'Noto Sans SC', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg-0);
  color: var(--text-1);
  font-family: var(--font-sans);
  line-height: 1.6;
  font-size: 15.5px;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(167, 139, 250, 0.12), transparent 60%),
    radial-gradient(900px 600px at -10% 30%, rgba(94, 234, 212, 0.10), transparent 60%),
    var(--bg-0);
  overflow-x: hidden;
}

body.lang-zh {
  font-family: 'Noto Sans SC', 'Inter', system-ui, sans-serif;
}

* { box-sizing: border-box; }

a { color: var(--accent-cyan); text-decoration: none; }
a:hover { color: #93f0e0; }

/* ---------- Background orbs ---------- */
.bg-orb {
  position: fixed; z-index: 0; pointer-events: none;
  width: 540px; height: 540px; border-radius: 50%;
  filter: blur(120px); opacity: 0.45;
}
.orb-a { background: #6366f1; top: -160px; left: -120px; }
.orb-b { background: #06b6d4; bottom: -200px; right: -120px; opacity: 0.35; }
.orb-c { background: #ec4899; top: 40%; right: 30%; opacity: 0.18; width: 380px; height: 380px; }

/* ---------- Top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 28px;
  background: rgba(7, 8, 13, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex; align-items: center; gap: 10px;
  color: var(--text-0); font-weight: 700; letter-spacing: 0.2px;
}
.brand-mark {
  width: 26px; height: 26px; border-radius: 8px;
  background: var(--grad-hero);
  box-shadow: 0 0 24px rgba(167, 139, 250, 0.55);
}
.brand-text { font-size: 15px; }

.topnav {
  display: flex; gap: 6px;
}
.topnav-link {
  color: var(--text-2);
  padding: 8px 14px; border-radius: 999px;
  font-weight: 500; font-size: 14px;
  transition: all .15s ease;
}
.topnav-link:hover { color: var(--text-0); background: rgba(255,255,255,0.04); }

.lang-toggle {
  display: inline-flex; padding: 4px; gap: 2px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 999px;
}
.lang-btn {
  background: transparent; border: 0; color: var(--text-2);
  padding: 6px 14px; border-radius: 999px;
  font-weight: 600; font-size: 13px; cursor: pointer;
  font-family: inherit;
  transition: all .15s ease;
}
.lang-btn.active { background: var(--grad-hero); color: #07080d; }

/* ---------- Layout ---------- */
.layout {
  position: relative; z-index: 1;
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 32px;
  max-width: 1440px;
  margin: 0 auto;
  padding: 28px;
}

.sidebar {
  position: sticky; top: 76px;
  align-self: start;
  height: calc(100vh - 100px);
  overflow-y: auto;
  padding-right: 6px;
}
.sidebar::-webkit-scrollbar { width: 6px; }
.sidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.08); border-radius: 6px; }

/* --- Scenario picker at the top of the sidebar (collapsible) --- */
.scenario-tabs-wrap {
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
  position: relative;
}
.picker-browse-link {
  display: block;
  font-size: 11px;
  color: var(--text-2);
  text-decoration: none;
  margin-bottom: 8px;
  letter-spacing: 0.3px;
  font-weight: 500;
  transition: color 0.15s ease;
}
.picker-browse-link:hover {
  color: var(--text-0);
}
.scenario-picker-current {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-m);
  padding: 12px 14px;
  color: var(--text-0);
  cursor: pointer;
  font-family: inherit;
  text-align: left;
  transition: all 0.15s ease;
  position: relative;
}
.scenario-picker-current:hover {
  background: var(--bg-card-strong);
  transform: translateY(-1px);
}
.scenario-picker-current::before {
  content: "";
  position: absolute;
  left: -1px; top: -1px; bottom: -1px;
  width: 4px;
  border-top-left-radius: var(--radius-m);
  border-bottom-left-radius: var(--radius-m);
  background: var(--accent-cyan);
  transition: background 0.15s ease;
}
.scenario-picker-current .picker-current-name {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-0);
  line-height: 1.25;
  margin-bottom: 2px;
}
.scenario-picker-current .picker-current-sub {
  display: block;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-2);
  letter-spacing: 0.3px;
}
.scenario-picker-current[data-accent="cyan"]::before    { background: var(--accent-cyan); }
.scenario-picker-current[data-accent="violet"]::before  { background: var(--accent-violet); }
.scenario-picker-current[data-accent="amber"]::before   { background: var(--accent-amber); }
.scenario-picker-current[data-accent="emerald"]::before { background: var(--accent-emerald); }
.scenario-picker-current[data-accent="pink"]::before    { background: var(--accent-pink); }
.scenario-picker-current[data-accent="coral"]::before   { background: var(--accent-coral); }
.scenario-picker-current[data-accent="indigo"]::before  { background: var(--accent-indigo); }
.scenario-picker-current[data-accent="red"]::before     { background: var(--accent-red); }
.scenario-picker-current[data-accent="fuchsia"]::before { background: var(--accent-fuchsia); }
.scenario-picker-current[data-accent="sky"]::before     { background: var(--accent-sky); }
.scenario-picker-current[data-accent="lime"]::before    { background: var(--accent-lime); }
.scenario-picker-current[data-accent="orange"]::before  { background: var(--accent-orange); }
.scenario-picker-current .picker-label {
  flex: 1;
  display: block;
}
.scenario-tabs {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 5px;
  margin-top: 8px;
  padding: 8px;
  background: rgba(10,14,28,0.85);
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  backdrop-filter: blur(8px);
  max-height: 60vh;
  overflow-y: auto;
}
.scenario-tabs-wrap[data-expanded="true"] .scenario-tabs {
  display: grid;
}
.scenario-tab {
  text-align: left;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 9px 7px 12px;
  color: var(--text-2);
  cursor: pointer;
  transition: all 0.12s ease;
  font-family: inherit;
  position: relative;
  min-height: 44px;
}
.scenario-tab::before {
  content: "";
  position: absolute;
  left: -1px; top: -1px; bottom: -1px;
  width: 3px;
  border-top-left-radius: var(--radius-m);
  border-bottom-left-radius: var(--radius-m);
  background: transparent;
  transition: background 0.15s ease;
}
.scenario-tab[data-accent="cyan"]::before    { background: var(--accent-cyan); }
.scenario-tab[data-accent="violet"]::before  { background: var(--accent-violet); }
.scenario-tab[data-accent="amber"]::before   { background: var(--accent-amber); }
.scenario-tab[data-accent="emerald"]::before { background: var(--accent-emerald); }
.scenario-tab[data-accent="pink"]::before    { background: var(--accent-pink); }
.scenario-tab[data-accent="coral"]::before   { background: var(--accent-coral); }
.scenario-tab[data-accent="indigo"]::before  { background: var(--accent-indigo); }
.scenario-tab[data-accent="red"]::before     { background: var(--accent-red); }
.scenario-tab[data-accent="fuchsia"]::before { background: var(--accent-fuchsia); }
.scenario-tab[data-accent="sky"]::before     { background: var(--accent-sky); }
.scenario-tab[data-accent="lime"]::before    { background: var(--accent-lime); }
.scenario-tab[data-accent="orange"]::before  { background: var(--accent-orange); }
.scenario-tab:hover {
  border-color: var(--border-strong);
  color: var(--text-1);
  background: var(--bg-card-strong);
}
.scenario-tab.active {
  border-color: var(--border-strong);
  background: linear-gradient(135deg, rgba(94,234,212,0.10), rgba(167,139,250,0.08));
  color: var(--text-0);
}
.scenario-tab.active[data-accent="cyan"]    { background: linear-gradient(135deg, rgba(94,234,212,0.15),  rgba(94,234,212,0.03)); }
.scenario-tab.active[data-accent="violet"]  { background: linear-gradient(135deg, rgba(167,139,250,0.15), rgba(167,139,250,0.03)); }
.scenario-tab.active[data-accent="amber"]   { background: linear-gradient(135deg, rgba(251,191,36,0.15),  rgba(251,191,36,0.03)); }
.scenario-tab.active[data-accent="emerald"] { background: linear-gradient(135deg, rgba(52,211,153,0.15),  rgba(52,211,153,0.03)); }
.scenario-tab.active[data-accent="pink"]    { background: linear-gradient(135deg, rgba(244,114,182,0.15), rgba(244,114,182,0.03)); }
.scenario-tab.active[data-accent="coral"]   { background: linear-gradient(135deg, rgba(251,113,133,0.15), rgba(251,113,133,0.03)); }
.scenario-tab.active[data-accent="indigo"]  { background: linear-gradient(135deg, rgba(129,140,248,0.15), rgba(129,140,248,0.03)); }
.scenario-tab.active[data-accent="red"]     { background: linear-gradient(135deg, rgba(248,113,113,0.15),  rgba(248,113,113,0.03)); }
.scenario-tab.active[data-accent="fuchsia"] { background: linear-gradient(135deg, rgba(232,121,249,0.15), rgba(232,121,249,0.03)); }
.scenario-tab.active[data-accent="sky"]     { background: linear-gradient(135deg, rgba(56,189,248,0.15),  rgba(56,189,248,0.03)); }
.scenario-tab.active[data-accent="lime"]    { background: linear-gradient(135deg, rgba(163,230,53,0.15),  rgba(163,230,53,0.03)); }
.scenario-tab.active[data-accent="orange"]  { background: linear-gradient(135deg, rgba(251,146,60,0.15),  rgba(251,146,60,0.03)); }
.scenario-tab-label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-0);
  margin-bottom: 1px;
  line-height: 1.25;
}
.scenario-tab-tagline {
  display: block;
  font-size: 10.5px;
  color: var(--text-3);
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.scenario-tab.active .scenario-tab-tagline { color: var(--text-1); }

.toc-wrap {
  position: relative;
}
.toc {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-direction: column; gap: 2px;
  position: relative;
}
.progress-rail {
  position: absolute;
  top: 12px;
  bottom: 12px;
  left: 11px;
  width: 3px;
  background: rgba(255,255,255,0.06);
  border-radius: 3px;
  pointer-events: none;
  z-index: 0;
}
.progress-rail-fill {
  position: absolute; top: 0; left: 0;
  width: 100%; height: 0%;
  background: var(--grad-rail);
  border-radius: 3px;
  transition: height .25s ease;
}
.toc-item {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 8px 10px 8px 0; cursor: pointer;
  border-radius: 8px;
  position: relative;
}
.toc-num {
  flex: 0 0 24px; height: 24px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 700; color: var(--text-2);
  background: var(--bg-2); border: 1px solid var(--border);
  font-family: var(--font-mono);
  z-index: 2;
}
.toc-item.done .toc-num { background: var(--accent-emerald); color: #052b1f; border-color: transparent; }
.toc-item.active .toc-num {
  background: var(--grad-hero); color: #07080d; border-color: transparent;
  box-shadow: 0 0 0 4px rgba(167,139,250,0.15);
}
.toc-label {
  font-size: 13.5px; color: var(--text-2); padding-top: 2px;
  line-height: 1.35;
}
.toc-item:hover .toc-label { color: var(--text-0); }
.toc-item.active .toc-label { color: var(--text-0); font-weight: 600; }

.sidebar-foot { margin-top: 26px; }
.sample-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-l); padding: 16px;
  backdrop-filter: blur(10px);
}
.sample-card-title {
  font-size: 11px; letter-spacing: 1.6px; text-transform: uppercase;
  color: var(--accent-cyan); font-weight: 700; margin-bottom: 10px;
}
.sample-list {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-direction: column; gap: 6px;
  font-size: 12.5px;
}
.sample-list li b {
  display: inline-block; min-width: 42px;
  color: var(--accent-violet); font-family: var(--font-mono); font-size: 11px;
}

/* ---------- Content ---------- */
.content {
  min-width: 0;
  padding-bottom: 80px;
}

.page-section { animation: fadeUp .35s ease both; }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 11px; letter-spacing: 2px; text-transform: uppercase;
  color: var(--accent-cyan); font-weight: 700;
  padding: 6px 12px; border-radius: 999px;
  background: rgba(94,234,212,0.06); border: 1px solid rgba(94,234,212,0.18);
}

h1, h2, h3, h4 { color: var(--text-0); margin: 0; line-height: 1.2; }
h1.page-title {
  font-size: 44px; font-weight: 800; margin: 14px 0 12px; letter-spacing: -0.5px;
  background: linear-gradient(135deg, #f5f7ff 0%, #cfd3e3 80%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
h2.section-title {
  font-size: 26px; font-weight: 700; margin: 48px 0 14px; letter-spacing: -0.3px;
}
h3.subsection-title {
  font-size: 18px; font-weight: 700; margin: 28px 0 8px; color: var(--text-0);
}
.lede {
  font-size: 17px; color: var(--text-1); max-width: 820px; margin: 0 0 14px;
}

p { margin: 0 0 12px; color: var(--text-1); }
ul, ol { padding-left: 20px; margin: 0 0 14px; color: var(--text-1); }
li { margin-bottom: 5px; }
strong { color: var(--text-0); }
code {
  font-family: var(--font-mono); font-size: 12.5px;
  background: rgba(255,255,255,0.05); padding: 1.5px 6px;
  border-radius: 5px; color: #e2e8f0;
  border: 1px solid var(--border);
}

pre.code-block {
  background: #0a0d18; border: 1px solid var(--border);
  border-radius: var(--radius-m); padding: 16px 18px;
  overflow-x: auto; margin: 12px 0 18px;
  font-family: var(--font-mono); font-size: 12.5px; line-height: 1.65;
  position: relative;
}
pre.code-block::before {
  content: attr(data-lang);
  position: absolute; top: 8px; right: 12px;
  font-size: 10px; letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--text-3); font-weight: 700;
}
pre.code-block code { background: transparent; border: 0; padding: 0; color: #e2e8f0; }
.code-block .c-key { color: #a78bfa; }
.code-block .c-str { color: #5eead4; }
.code-block .c-num { color: #fbbf24; }
.code-block .c-com { color: #5f6478; font-style: italic; }

/* ---------- Hero ---------- */
.hero {
  margin: 8px 0 16px;
  padding: 44px 36px;
  border-radius: var(--radius-xl);
  background:
    radial-gradient(800px 300px at 110% -20%, rgba(244, 114, 182, 0.18), transparent),
    radial-gradient(700px 300px at -10% 110%, rgba(94, 234, 212, 0.16), transparent),
    var(--bg-card-strong);
  border: 1px solid var(--border);
  position: relative; overflow: hidden;
}
.hero h1 {
  font-size: 52px; font-weight: 800; letter-spacing: -1px;
  margin: 14px 0;
}
.hero h1 .grad {
  background: var(--grad-hero);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.lede { font-size: 18px; max-width: 780px; }
.hero-stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 14px; margin-top: 28px;
}
.hero-stat {
  padding: 14px 16px; border-radius: var(--radius-m);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
}
.hero-stat-num {
  font-family: var(--font-mono); font-size: 22px; font-weight: 700;
  color: var(--text-0);
}
.hero-stat-label {
  font-size: 11.5px; letter-spacing: 1.4px; text-transform: uppercase;
  color: var(--text-3); margin-top: 4px;
}

/* ---------- Cards ---------- */
.card-grid {
  display: grid; gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  margin: 18px 0 24px;
}
.card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-l); padding: 20px 22px;
  backdrop-filter: blur(10px);
  transition: transform .15s ease, border-color .15s ease;
  position: relative; overflow: hidden;
}
.card:hover { transform: translateY(-2px); border-color: var(--border-strong); }
.card-icon {
  width: 38px; height: 38px; border-radius: 10px;
  background: var(--grad-card);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 20px; margin-bottom: 12px;
  border: 1px solid var(--border);
}
.card h4 { margin: 0 0 6px; font-size: 16px; }
.card p { font-size: 13.5px; color: var(--text-2); margin: 0; }

/* ---------- Callouts ---------- */
.callout {
  display: flex; gap: 14px;
  border-radius: var(--radius-m);
  padding: 14px 18px;
  margin: 14px 0;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.02);
  position: relative;
}
.callout::before {
  content: ''; width: 3px; border-radius: 3px;
  background: var(--accent-cyan);
}
.callout.warn::before { background: var(--accent-amber); }
.callout.danger::before { background: var(--accent-red); }
.callout.tip::before { background: var(--accent-emerald); }
.callout-body { flex: 1; }
.callout-title {
  font-weight: 700; color: var(--text-0); font-size: 13px;
  letter-spacing: 0.5px; text-transform: uppercase; margin-bottom: 4px;
}
.callout p { margin: 0; font-size: 14px; color: var(--text-1); }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; margin: 14px 0 22px; }
table.compare {
  width: 100%; border-collapse: collapse;
  background: var(--bg-card); border-radius: var(--radius-m);
  overflow: hidden; font-size: 13.5px;
  border: 1px solid var(--border);
}
table.compare th, table.compare td {
  padding: 12px 14px; text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
table.compare th {
  background: rgba(255,255,255,0.04);
  color: var(--text-0); font-weight: 600;
  font-size: 12px; letter-spacing: 0.5px; text-transform: uppercase;
}
table.compare tr:last-child td { border-bottom: 0; }
table.compare tr:hover td { background: rgba(255,255,255,0.02); }
.tag {
  display: inline-block; padding: 2px 8px; border-radius: 999px;
  font-size: 11px; font-weight: 600; font-family: var(--font-mono);
}
.tag.good { background: rgba(52,211,153,0.12); color: var(--accent-emerald); }
.tag.warn { background: rgba(251,191,36,0.12); color: var(--accent-amber); }
.tag.bad { background: rgba(248,113,113,0.12); color: var(--accent-red); }
.tag.info { background: rgba(94,234,212,0.12); color: var(--accent-cyan); }
.tag.violet { background: rgba(167,139,250,0.14); color: var(--accent-violet); }

/* ---------- Bar chart ---------- */
.bars {
  display: flex; flex-direction: column; gap: 10px;
  margin: 14px 0 22px;
}
.bar-row {
  display: grid; grid-template-columns: 180px 1fr 70px; gap: 12px;
  align-items: center; font-size: 13px;
}
.bar-row .bar-label { color: var(--text-1); font-weight: 500; }
.bar-row .bar-val { font-family: var(--font-mono); color: var(--text-2); text-align: right; font-size: 12px; }
.bar-track {
  height: 12px; background: rgba(255,255,255,0.05);
  border-radius: 999px; overflow: hidden;
  border: 1px solid var(--border);
}
.bar-fill {
  height: 100%; border-radius: 999px;
  background: var(--grad-hero);
  transition: width .4s ease;
}
.bar-fill.cyan { background: linear-gradient(90deg, #5eead4, #06b6d4); }
.bar-fill.violet { background: linear-gradient(90deg, #a78bfa, #6366f1); }
.bar-fill.pink { background: linear-gradient(90deg, #f472b6, #ec4899); }
.bar-fill.amber { background: linear-gradient(90deg, #fbbf24, #f59e0b); }

/* ---------- Two-column layout ---------- */
.two-col { display: grid; grid-template-columns: 1.1fr 1fr; gap: 22px; margin: 14px 0 22px; }
.two-col > .panel {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-l); padding: 22px 24px;
}
.panel-title {
  font-weight: 700; color: var(--text-0); margin-bottom: 8px;
  display: flex; align-items: center; gap: 8px;
}

/* ---------- Steps ---------- */
.steps { counter-reset: step; margin: 14px 0 22px; }
.step {
  display: grid; grid-template-columns: 38px 1fr; gap: 16px;
  padding: 16px 18px; margin-bottom: 10px;
  border-radius: var(--radius-m); border: 1px solid var(--border);
  background: var(--bg-card);
}
.step::before {
  counter-increment: step;
  content: counter(step);
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--grad-hero); color: #07080d;
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 800; font-family: var(--font-mono);
}
.step-title {
  font-weight: 700; color: var(--text-0); font-size: 15px; margin-bottom: 4px;
}
.step-body { color: var(--text-1); font-size: 14px; }
.step-body p:last-child { margin-bottom: 0; }

/* ---------- Diagrams (SVG holders) ---------- */
.diagram {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-l);
  padding: 22px; margin: 18px 0 24px;
  overflow-x: auto;
}
.diagram svg { display: block; width: 100%; height: auto; }
.diagram .caption {
  margin-top: 12px; font-size: 12.5px; color: var(--text-3);
  text-align: center; letter-spacing: 0.3px;
}

/* ---------- Pager ---------- */
.pager {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
  margin-top: 48px;
}
.pager a {
  display: block; padding: 18px 22px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-l); color: var(--text-1);
  transition: all .15s ease;
}
.pager a:hover { border-color: var(--accent-cyan); transform: translateY(-2px); }
.pager .pager-dir {
  font-size: 11px; letter-spacing: 2px; text-transform: uppercase;
  color: var(--text-3); margin-bottom: 6px;
}
.pager .pager-title { font-weight: 700; color: var(--text-0); font-size: 15px; }
.pager a.next { text-align: right; }

/* ---------- Footer ---------- */
.footer {
  position: relative; z-index: 1;
  border-top: 1px solid var(--border);
  padding: 24px 28px;
  display: flex; justify-content: space-between;
  font-size: 12.5px; color: var(--text-3);
  max-width: 1440px; margin: 0 auto;
}

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: relative; top: 0; height: auto; }
  .progress-rail { display: none; }
  .hero h1 { font-size: 36px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .two-col { grid-template-columns: 1fr; }
  .topnav { display: none; }
}
@media (max-width: 600px) {
  .topbar { padding: 12px 16px; }
  .layout { padding: 16px; gap: 16px; }
  .hero { padding: 28px 22px; }
  .hero h1 { font-size: 28px; }
  .bar-row { grid-template-columns: 110px 1fr 56px; }
}

/* ---------- Weekly Updates (news scenario) ---------- */
body[data-scenario="news"] .toc-num {
  background: rgba(52, 211, 153, 0.10);
  color: var(--accent-emerald);
  border: 1px solid rgba(52, 211, 153, 0.22);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
}
body[data-scenario="news"] .toc-item.active .toc-num {
  background: rgba(52, 211, 153, 0.22);
  color: #d1fadf;
  border-color: rgba(52, 211, 153, 0.42);
}
body[data-scenario="news"] .progress-rail-fill {
  background: linear-gradient(180deg, var(--accent-emerald) 0%, var(--accent-cyan) 100%);
}

.news-hero {
  display: flex; flex-direction: column; gap: 14px;
  padding: 28px 32px;
  border-radius: var(--radius-l);
  background: linear-gradient(135deg, rgba(52,211,153,0.10), rgba(94,234,212,0.04));
  border: 1px solid rgba(52,211,153,0.20);
  margin-bottom: 28px;
}
.news-hero .week-chip {
  display: inline-flex; align-items: center; gap: 8px;
  align-self: flex-start;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(52,211,153,0.14);
  color: var(--accent-emerald);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
}
.news-hero h1 {
  margin: 0;
  font-size: 30px;
  color: var(--text-0);
  letter-spacing: -0.5px;
}
.news-hero .news-lede {
  margin: 0;
  color: var(--text-1);
  font-size: 16px;
  line-height: 1.65;
}

.news-section {
  margin-top: 26px;
}
.news-section-title {
  display: flex; align-items: center; gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-0);
  margin: 0 0 14px 0;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.news-section-title .news-section-icon {
  font-size: 20px;
}

.news-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 12px;
}
.news-list > li {
  padding: 14px 16px;
  border-radius: var(--radius-m);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.news-list > li:hover {
  border-color: rgba(52,211,153,0.32);
  transform: translateY(-1px);
}
.news-list .item-head {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px;
  margin-bottom: 6px;
}
.news-list .item-title {
  font-weight: 700;
  color: var(--text-0);
  font-size: 15px;
}
.news-list .item-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-2);
}
.news-list .item-body {
  color: var(--text-1);
  font-size: 14px;
  line-height: 1.6;
}
.news-list .item-body a { word-break: break-word; }
.news-list .tag-row {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-top: 8px;
}
.news-list .item-sources {
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px dashed var(--border);
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px;
  font-size: 12px;
  color: var(--text-2);
  line-height: 1.5;
}
.news-list .item-sources .src-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text-3);
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  margin-right: 4px;
}
.news-list .item-sources a {
  color: var(--accent-cyan);
  word-break: break-word;
  border-bottom: 1px dotted transparent;
}
.news-list .item-sources a:hover {
  color: #93f0e0;
  border-bottom-color: rgba(94,234,212,0.45);
}
.news-list .item-sources .src-sep {
  color: var(--text-3);
  opacity: 0.5;
  margin: 0 2px;
}

/* ----- Full-details expander ----- */
.news-list .item-explainer {
  margin-top: 12px;
  padding-top: 10px;
}
.news-list .item-explainer summary {
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px 6px 12px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(94, 234, 212, 0.08), rgba(167, 139, 250, 0.08));
  border: 1px solid rgba(94, 234, 212, 0.24);
  color: var(--accent-cyan);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.3px;
  list-style: none;
  user-select: none;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}
.news-list .item-explainer summary::-webkit-details-marker { display: none; }
.news-list .item-explainer summary::after {
  content: '▸';
  font-family: monospace;
  font-size: 12px;
  transition: transform 0.18s ease;
  display: inline-block;
  margin-left: 4px;
}
.news-list .item-explainer[open] summary::after { transform: rotate(90deg); }
.news-list .item-explainer summary:hover {
  background: linear-gradient(135deg, rgba(94, 234, 212, 0.16), rgba(167, 139, 250, 0.16));
  border-color: rgba(94, 234, 212, 0.48);
  color: #93f0e0;
  transform: translateY(-1px);
}
.news-list .item-explainer .exp-icon {
  font-size: 13px;
  filter: saturate(1.3);
}
.news-list .item-explainer .exp-text {
  font-family: var(--font-sans);
}

.news-list .explainer-grid {
  margin-top: 14px;
  display: grid;
  gap: 16px;
  padding: 18px 20px;
  border-radius: var(--radius-m);
  background: linear-gradient(135deg, rgba(94, 234, 212, 0.04), rgba(167, 139, 250, 0.04));
  border: 1px solid rgba(94, 234, 212, 0.16);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.02);
}
.news-list .explainer-part {
  padding-left: 12px;
  border-left: 2px solid rgba(94, 234, 212, 0.28);
}
.news-list .explainer-part h5 {
  margin: 0 0 8px 0;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 1.8px;
  text-transform: uppercase;
  color: var(--accent-emerald);
  font-weight: 700;
}
.news-list .explainer-part > div {
  color: var(--text-1);
  font-size: 13.5px;
  line-height: 1.7;
}
.news-list .explainer-part > div p { margin: 0 0 8px 0; }
.news-list .explainer-part > div p:last-child { margin-bottom: 0; }
.news-list .explainer-part > div ul, .news-list .explainer-part > div ol {
  margin: 6px 0 6px 18px;
  padding: 0;
}
.news-list .explainer-part > div li {
  margin: 3px 0;
}
.news-list .explainer-part code {
  font-size: 12.5px;
  padding: 1px 6px;
  border-radius: 4px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  font-family: var(--font-mono);
}
.news-list .explainer-part pre.exp-code {
  margin: 8px 0;
  padding: 10px 12px;
  background: rgba(0,0,0,0.30);
  border: 1px solid var(--border);
  border-radius: var(--radius-s);
  font-family: var(--font-mono);
  font-size: 12px;
  overflow-x: auto;
  color: var(--text-1);
}
.news-list .explainer-part .exp-numbers {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 6px;
  margin: 8px 0;
  padding: 8px 10px;
  background: rgba(0,0,0,0.20);
  border: 1px solid var(--border);
  border-radius: var(--radius-s);
}
.news-list .explainer-part .exp-numbers .ex-num {
  display: flex; flex-direction: column;
}
.news-list .explainer-part .exp-numbers .ex-num b {
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-size: 13px;
}
.news-list .explainer-part .exp-numbers .ex-num span {
  color: var(--text-3);
  font-size: 11px;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.news-list .news-tag {
  font-family: var(--font-mono);
  font-size: 10.5px;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(255,255,255,0.05);
  color: var(--text-2);
  border: 1px solid var(--border);
}
.news-list .news-tag.open      { color: var(--accent-emerald); border-color: rgba(52,211,153,0.30); background: rgba(52,211,153,0.08); }
.news-list .news-tag.closed    { color: var(--accent-pink);    border-color: rgba(244,114,182,0.30); background: rgba(244,114,182,0.08); }
.news-list .news-tag.major     { color: var(--accent-amber);   border-color: rgba(251,191,36,0.30);  background: rgba(251,191,36,0.08); }
.news-list .news-tag.hardware  { color: var(--accent-cyan);    border-color: rgba(94,234,212,0.30);  background: rgba(94,234,212,0.08); }
.news-list .news-tag.framework { color: var(--accent-violet);  border-color: rgba(167,139,250,0.30); background: rgba(167,139,250,0.08); }

.news-empty {
  padding: 18px;
  border-radius: var(--radius-m);
  background: rgba(255,255,255,0.03);
  border: 1px dashed var(--border);
  color: var(--text-2);
  font-size: 13.5px;
  font-style: italic;
}

.week-month-divider {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 4px 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  color: var(--text-3);
  text-transform: uppercase;
}
.week-month-divider::after {
  content: ''; flex: 1; height: 1px; background: var(--border);
}

/* ----- Sidebar month grouping (news scenario) ----- */
.toc-month-group {
  list-style: none;
  margin: 10px 0 0 0;
}
.toc-month-header {
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 6px 6px 0;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.4px;
  color: var(--text-3);
  text-transform: uppercase;
  border-bottom: 1px solid var(--border);
  user-select: none;
  transition: color 0.15s ease;
}
.toc-month-header:hover { color: var(--text-1); }
.toc-month-header .month-chevron {
  display: inline-block;
  width: 12px;
  transition: transform 0.18s ease;
  color: var(--accent-emerald);
}
.toc-month-group[data-month-expanded="false"] .month-chevron {
  transform: rotate(-90deg);
  opacity: 0.7;
}
.toc-month-header .month-label { flex: 1; }
.toc-month-header .month-count {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  padding: 1px 8px;
  border-radius: 999px;
  color: var(--text-2);
  font-size: 10px;
  font-weight: 600;
}
.toc-month-weeks {
  list-style: none;
  padding: 0;
  margin: 8px 0 4px 0;
  display: grid;
  gap: 4px;
  overflow: hidden;
  transition: max-height 0.25s ease, opacity 0.2s ease, margin 0.2s ease;
}
.toc-month-group[data-month-expanded="false"] .toc-month-weeks {
  max-height: 0;
  opacity: 0;
  margin: 0;
  pointer-events: none;
}
.toc-month-group[data-month-expanded="true"] .toc-month-weeks {
  max-height: 2000px;
  opacity: 1;
}

/* ============================================================
   Hub landing page — shown on first visit or via brand logo
   ============================================================ */
body.is-hub .sidebar { display: none; }
body.is-hub .layout {
  grid-template-columns: 1fr;
  max-width: 1280px;
}

.hub {
  padding: 8px 0 40px;
}
.hub-header {
  text-align: center;
  margin-bottom: 28px;
  padding: 24px 16px 12px;
}
.hub-header h1 {
  font-size: 38px;
  font-weight: 800;
  line-height: 1.15;
  margin: 0 0 14px;
  background: var(--grad-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}
.hub-header p {
  font-size: 16px;
  color: var(--text-2);
  margin: 0;
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
}

.hub-continue {
  display: flex;
  align-items: center;
  gap: 14px;
  max-width: 560px;
  margin: 0 auto 36px;
  padding: 16px 22px;
  background: var(--bg-card-strong);
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  text-decoration: none;
  color: var(--text-0);
  position: relative;
  transition: all 0.18s ease;
  overflow: hidden;
}
.hub-continue::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: var(--accent-cyan);
}
.hub-continue[data-accent="cyan"]::before    { background: var(--accent-cyan); }
.hub-continue[data-accent="violet"]::before  { background: var(--accent-violet); }
.hub-continue[data-accent="amber"]::before   { background: var(--accent-amber); }
.hub-continue[data-accent="emerald"]::before { background: var(--accent-emerald); }
.hub-continue[data-accent="pink"]::before    { background: var(--accent-pink); }
.hub-continue[data-accent="coral"]::before   { background: var(--accent-coral); }
.hub-continue[data-accent="indigo"]::before  { background: var(--accent-indigo); }
.hub-continue[data-accent="red"]::before     { background: var(--accent-red); }
.hub-continue[data-accent="fuchsia"]::before { background: var(--accent-fuchsia); }
.hub-continue[data-accent="sky"]::before     { background: var(--accent-sky); }
.hub-continue[data-accent="lime"]::before    { background: var(--accent-lime); }
.hub-continue[data-accent="orange"]::before  { background: var(--accent-orange); }
.hub-continue:hover {
  background: var(--bg-card);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.35);
}
.hub-continue-tag {
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-3);
}
.hub-continue-name {
  flex: 1;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-0);
}
.hub-continue-arrow {
  font-size: 20px;
  color: var(--text-1);
}

.hub-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding: 0 4px;
}
@media (max-width: 1100px) {
  .hub-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .hub-grid { grid-template-columns: 1fr; }
  .hub-header h1 { font-size: 26px; }
}

.hub-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  text-decoration: none;
  color: var(--text-0);
  transition: all 0.18s ease;
  position: relative;
  overflow: hidden;
  min-height: 240px;
}
.hub-card::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: var(--accent-cyan);
  transition: width 0.18s ease;
}
.hub-card[data-accent="cyan"]::before    { background: var(--accent-cyan); }
.hub-card[data-accent="violet"]::before  { background: var(--accent-violet); }
.hub-card[data-accent="amber"]::before   { background: var(--accent-amber); }
.hub-card[data-accent="emerald"]::before { background: var(--accent-emerald); }
.hub-card[data-accent="pink"]::before    { background: var(--accent-pink); }
.hub-card[data-accent="coral"]::before   { background: var(--accent-coral); }
.hub-card[data-accent="indigo"]::before  { background: var(--accent-indigo); }
.hub-card[data-accent="red"]::before     { background: var(--accent-red); }
.hub-card[data-accent="fuchsia"]::before { background: var(--accent-fuchsia); }
.hub-card[data-accent="sky"]::before     { background: var(--accent-sky); }
.hub-card[data-accent="lime"]::before    { background: var(--accent-lime); }
.hub-card[data-accent="orange"]::before  { background: var(--accent-orange); }
.hub-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
  background: var(--bg-card-strong);
  box-shadow: 0 12px 32px rgba(0,0,0,0.35);
}
.hub-card:hover::before { width: 6px; }

.hub-card-head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
}
.hub-card-emoji {
  font-size: 32px;
  line-height: 1;
  flex-shrink: 0;
}
.hub-card-titles { flex: 1; min-width: 0; }
.hub-card-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-0);
  line-height: 1.25;
  margin-bottom: 4px;
}
.hub-card-tagline {
  font-size: 12.5px;
  color: var(--text-2);
  line-height: 1.4;
}
.hub-card-audience {
  font-size: 12px;
  color: var(--text-3);
  font-style: italic;
  margin-bottom: 12px;
  padding: 6px 10px;
  background: rgba(255,255,255,0.025);
  border-radius: 6px;
}
.hub-card-learn-label {
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-3);
  font-weight: 600;
  margin-bottom: 6px;
}
.hub-card-topics {
  list-style: none;
  padding: 0;
  margin: 0 0 14px;
  flex: 1;
}
.hub-card-topics li {
  font-size: 12.5px;
  line-height: 1.45;
  color: var(--text-1);
  padding: 3px 0 3px 14px;
  position: relative;
}
.hub-card-topics li::before {
  content: "·";
  position: absolute;
  left: 2px;
  color: var(--text-3);
  font-weight: 700;
}
.hub-card-cta {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-0);
  letter-spacing: 0.3px;
  align-self: flex-start;
  padding-top: 8px;
  border-top: 1px solid var(--border);
  width: 100%;
}

/* ============================================================
   Search — topbar button + Cmd/Ctrl+K modal
   ============================================================ */

.topbar-actions {
  display: inline-flex; align-items: center; gap: 10px;
}

.search-btn {
  display: inline-flex; align-items: center; gap: 10px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-2);
  padding: 6px 10px 6px 12px;
  font-family: inherit; font-size: 13px; font-weight: 500;
  cursor: pointer;
  transition: all .15s ease;
}
.search-btn:hover { color: var(--text-0); background: rgba(255,255,255,0.08); border-color: var(--border-strong); }
.search-btn-icon { font-size: 13px; }
.search-btn-label { color: var(--text-2); }
.search-btn-kbd {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-3);
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1px 6px;
  letter-spacing: 0.5px;
}
body.lang-zh .search-btn-label-en { display: none; }
body:not(.lang-zh) .search-btn-label-zh { display: none; }

.search-modal {
  position: fixed; inset: 0; z-index: 100;
  display: none;
}
.search-modal[data-open="true"] { display: block; }
.search-backdrop {
  position: absolute; inset: 0;
  background: rgba(7, 8, 13, 0.72);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  animation: search-fade .12s ease-out;
}
@keyframes search-fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes search-rise { from { opacity: 0; transform: translate(-50%, -54%); } to { opacity: 1; transform: translate(-50%, -50%); } }

.search-panel {
  position: absolute;
  top: 22%; left: 50%;
  transform: translate(-50%, -50%);
  width: min(680px, calc(100vw - 32px));
  max-height: min(72vh, 620px);
  background: var(--bg-card-strong);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-deep);
  display: flex; flex-direction: column;
  overflow: hidden;
  animation: search-rise .14s ease-out;
}
.search-inputwrap {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
}
.search-icon { font-size: 16px; opacity: 0.7; }
.search-input {
  flex: 1; background: transparent; border: 0; outline: 0;
  color: var(--text-0);
  font-family: inherit; font-size: 16px; font-weight: 500;
  padding: 4px 0;
}
.search-input::placeholder { color: var(--text-3); }
.search-close {
  background: rgba(255,255,255,0.06); border: 1px solid var(--border);
  color: var(--text-2);
  font-family: var(--font-mono); font-size: 11px; font-weight: 600;
  padding: 4px 10px; border-radius: 6px;
  cursor: pointer; letter-spacing: 0.5px;
}
.search-close:hover { color: var(--text-0); background: rgba(255,255,255,0.10); }

.search-results {
  flex: 1; overflow-y: auto; padding: 6px;
  scrollbar-width: thin;
}
.search-results::-webkit-scrollbar { width: 6px; }
.search-results::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.10); border-radius: 6px; }

.search-result {
  display: grid;
  grid-template-columns: 88px 1fr;
  grid-template-rows: auto auto;
  column-gap: 12px; row-gap: 2px;
  padding: 10px 12px;
  margin: 2px 0;
  border-radius: var(--radius-m);
  text-decoration: none;
  color: var(--text-1);
  border: 1px solid transparent;
  transition: background .1s ease, border-color .1s ease;
}
.search-result:hover, .search-result.is-active {
  background: rgba(255,255,255,0.05);
  border-color: var(--border);
}
.search-result.is-active { box-shadow: inset 2px 0 0 var(--accent-cyan); }

.search-scenario {
  grid-row: 1 / span 2; align-self: center; justify-self: stretch;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.6px;
  padding: 4px 8px;
  border-radius: 6px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  color: var(--text-2);
}
.search-scenario[data-accent="basics"]   { color: var(--accent-orange);  border-color: color-mix(in srgb, var(--accent-orange) 35%, transparent); }
.search-scenario[data-accent="dev"]      { color: var(--accent-cyan);    border-color: color-mix(in srgb, var(--accent-cyan) 35%, transparent); }
.search-scenario[data-accent="tutor"]    { color: var(--accent-violet);  border-color: color-mix(in srgb, var(--accent-violet) 35%, transparent); }
.search-scenario[data-accent="image"]    { color: var(--accent-pink);    border-color: color-mix(in srgb, var(--accent-pink) 35%, transparent); }
.search-scenario[data-accent="video"]    { color: var(--accent-indigo);  border-color: color-mix(in srgb, var(--accent-indigo) 35%, transparent); }
.search-scenario[data-accent="family"]   { color: var(--accent-coral);   border-color: color-mix(in srgb, var(--accent-coral) 35%, transparent); }
.search-scenario[data-accent="stocks"]   { color: var(--accent-amber);   border-color: color-mix(in srgb, var(--accent-amber) 35%, transparent); }
.search-scenario[data-accent="ops"]      { color: var(--accent-red);     border-color: color-mix(in srgb, var(--accent-red) 35%, transparent); }
.search-scenario[data-accent="audio"]    { color: var(--accent-fuchsia); border-color: color-mix(in srgb, var(--accent-fuchsia) 35%, transparent); }
.search-scenario[data-accent="research"] { color: var(--accent-sky);     border-color: color-mix(in srgb, var(--accent-sky) 35%, transparent); }
.search-scenario[data-accent="health"]   { color: var(--accent-lime);    border-color: color-mix(in srgb, var(--accent-lime) 35%, transparent); }
.search-scenario[data-accent="news"]     { color: var(--accent-emerald); border-color: color-mix(in srgb, var(--accent-emerald) 35%, transparent); }

.search-title {
  font-size: 14px; font-weight: 600;
  color: var(--text-0);
  line-height: 1.35;
}
.search-snippet {
  font-size: 12.5px;
  color: var(--text-2);
  line-height: 1.5;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.search-result mark {
  background: color-mix(in srgb, var(--accent-cyan) 28%, transparent);
  color: var(--text-0);
  padding: 0 2px; border-radius: 3px;
}

.search-status {
  padding: 10px 16px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-3);
  font-family: var(--font-mono);
}

body.search-open { overflow: hidden; }

@media (max-width: 640px) {
  .search-panel {
    top: 12%;
    width: calc(100vw - 16px);
    max-height: 84vh;
  }
  .search-btn-label { display: none; }
  .search-result { grid-template-columns: 70px 1fr; }
}