/* llm.cpp — site styles */
:root {
  --bg: #0a0a0a;
  --bg-raised: #111111;
  --bg-chip: #161616;
  --border: #232323;
  --border-strong: #2e2e2e;
  --text: #ededed;
  --text-muted: #8f8f8f;
  --text-faint: #5c5c5c;
  --accent: #ededed;
  --mono: "Geist Mono", "SFMono-Regular", ui-monospace, "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --maxw: 1024px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: #333; }

a { color: inherit; text-decoration: none; }

img { display: block; }

/* ---------- header ---------- */
header.site-header {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 24px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-left { display: flex; align-items: center; gap: 16px; }

.brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 15px; font-weight: 600; letter-spacing: -0.02em;
}
.brand .mark {
  width: 22px; height: 22px; border-radius: 5px;
  background: var(--text);
  color: var(--bg);
  display: grid; place-items: center;
  font-size: 12px; font-weight: 700;
}

.nav-divider { width: 1px; height: 20px; background: var(--border); }

.nav-links { display: flex; align-items: center; gap: 20px; font-size: 15px; }
.nav-links a { color: var(--text-muted); transition: color .15s; }
.nav-links a:hover, .nav-links a.active { color: var(--text); }

.github-link { display: flex; align-items: center; gap: 8px; font-size: 15px; }
.github-link span { text-decoration: underline; text-decoration-color: #444; text-underline-offset: 4px; }
.github-link:hover span { text-decoration-color: var(--text); }
.github-link img { width: 20px; height: 20px; }

/* ---------- hero ---------- */
.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 96px 24px 72px;
}

.hero .kicker {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 0.02em;
  margin-bottom: 20px;
  display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid var(--border);
  padding: 5px 12px;
  border-radius: 999px;
}
.hero .kicker .dot { width: 6px; height: 6px; border-radius: 50%; background: #4ade80; }

.hero h1 {
  font-size: clamp(40px, 7vw, 72px);
  line-height: 1.04;
  letter-spacing: -0.045em;
  font-weight: 650;
  max-width: 16ch;
}

.hero p.lede {
  margin-top: 24px;
  font-size: 18px;
  color: var(--text-muted);
  max-width: 56ch;
}

.hero-actions { margin-top: 36px; display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 15px; font-weight: 500;
  padding: 11px 20px;
  border-radius: 8px;
  border: 1px solid var(--border-strong);
  color: var(--text);
  background: var(--bg-raised);
  transition: border-color .15s, background .15s;
}
.btn:hover { border-color: #4a4a4a; background: #1a1a1a; }
.btn.primary { background: var(--text); color: var(--bg); border-color: var(--text); }
.btn.primary:hover { background: #fff; }
.btn img { width: 17px; height: 17px; }
.btn.primary img { filter: invert(1); }

/* ---------- sections ---------- */
section.block {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 72px 24px;
  border-top: 1px solid var(--border);
}

.section-head { margin-bottom: 40px; max-width: 60ch; }
.section-head h2 { font-size: clamp(28px, 4.5vw, 40px); letter-spacing: -0.035em; font-weight: 650; line-height: 1.12; }
.section-head p { margin-top: 14px; color: var(--text-muted); font-size: 16px; }

.mono-tag {
  font-family: var(--mono); font-size: 12px; color: var(--text-faint);
  text-transform: uppercase; letter-spacing: 0.12em; margin-bottom: 14px; display: block;
}

/* ---------- hardware grid ---------- */
.hw-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
@media (max-width: 720px) { .hw-grid { grid-template-columns: repeat(2, 1fr); } }

.hw-chip {
  display: flex; align-items: center; gap: 14px;
  background: var(--bg-chip);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 18px;
  font-size: 15px; font-weight: 500;
  transition: border-color .15s, transform .15s;
}
.hw-chip:hover { border-color: #454545; transform: translateY(-1px); }
.hw-chip img { width: 26px; height: 26px; object-fit: contain; }
.hw-chip small { display: block; font-size: 12px; color: var(--text-faint); font-weight: 400; font-family: var(--mono); }

/* ---------- terminal ---------- */
.term {
  background: #0d0d0d;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.7;
}
.term-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-faint); font-size: 12px;
}
.term-bar .dots { display: flex; gap: 6px; margin-right: 8px; }
.term-bar .dots i { width: 10px; height: 10px; border-radius: 50%; background: #2c2c2c; display: block; }
.term pre {
  padding: 18px 20px;
  overflow-x: auto;
  color: #d4d4d4;
  white-space: pre;
}
.term .c { color: #6a6a6a; }       /* comments */
.term .p { color: #7ee787; }       /* prompt */
.term .k { color: #79b8ff; }       /* keyword */
.term .dim { color: #8f8f8f; }

/* ---------- two-col ---------- */
.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
@media (max-width: 860px) { .cols { grid-template-columns: 1fr; } }

.cols h3 { font-size: 20px; letter-spacing: -0.02em; margin-bottom: 12px; }
.cols p { color: var(--text-muted); font-size: 15px; margin-bottom: 12px; }
.cols p code, section.block p code, .feature li code {
  font-family: var(--mono); font-size: 0.86em;
  background: #1a1a1a; border: 1px solid var(--border);
  padding: 2px 6px; border-radius: 5px; color: #e8e8e8;
}

/* ---------- feature list ---------- */
.features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
@media (max-width: 720px) { .features { grid-template-columns: 1fr; } }
.feature {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  background: var(--bg-chip);
}
.feature h4 { font-size: 15px; font-weight: 600; margin-bottom: 6px; font-family: var(--mono); }
.feature p { color: var(--text-muted); font-size: 14px; }

/* ---------- table ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 12px; }
table.bench { width: 100%; border-collapse: collapse; font-size: 14px; }
table.bench th, table.bench td {
  text-align: left; padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
table.bench th {
  font-family: var(--mono); font-size: 12px; font-weight: 500;
  color: var(--text-faint); text-transform: uppercase; letter-spacing: 0.08em;
  background: #0e0e0e;
}
table.bench tr:last-child td { border-bottom: none; }
table.bench td { color: #cfcfcf; }
table.bench td:first-child { font-family: var(--mono); color: var(--text); }

/* ---------- footer ---------- */
footer {
  border-top: 1px solid var(--border);
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 40px 24px 64px;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px;
  color: var(--text-faint); font-size: 14px;
}
footer a { color: var(--text-muted); }
footer a:hover { color: var(--text); }
footer .foot-links { display: flex; gap: 24px; }

/* ---------- docs layout ---------- */
.docs-wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 24px 24px 96px;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 56px;
}
@media (max-width: 860px) {
  .docs-wrap { grid-template-columns: 1fr; }
  .docs-nav { position: static !important; border-right: none !important; border-bottom: 1px solid var(--border); padding-bottom: 24px !important; }
}

.docs-nav {
  position: sticky; top: 32px; align-self: start;
  border-right: 1px solid var(--border);
  padding-right: 24px;
  font-size: 14px;
}
.docs-nav .nav-group-label {
  font-family: var(--mono); font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--text-faint); margin-bottom: 10px;
}
.docs-nav ul { list-style: none; }
.docs-nav li { margin: 2px 0; }
.docs-nav a {
  display: block; padding: 6px 10px; border-radius: 6px;
  color: var(--text-muted);
}
.docs-nav a:hover { color: var(--text); background: #161616; }
.docs-nav a.active { color: var(--text); background: #1a1a1a; }

.docs-content { min-width: 0; max-width: 720px; }
.docs-content h1 { font-size: 36px; letter-spacing: -0.035em; margin-bottom: 16px; }
.docs-content h2 {
  font-size: 24px; letter-spacing: -0.02em; margin: 48px 0 16px;
  padding-top: 24px; border-top: 1px solid var(--border);
}
.docs-content h3 { font-size: 18px; margin: 32px 0 12px; }
.docs-content p { color: #b9b9b9; font-size: 15px; margin-bottom: 14px; }
.docs-content ul, .docs-content ol { color: #b9b9b9; font-size: 15px; margin: 0 0 14px 22px; }
.docs-content li { margin-bottom: 6px; }
.docs-content a { color: var(--text); text-decoration: underline; text-decoration-color: #4a4a4a; text-underline-offset: 3px; }
.docs-content a:hover { text-decoration-color: var(--text); }
.docs-content code {
  font-family: var(--mono); font-size: 0.86em;
  background: #1a1a1a; border: 1px solid var(--border);
  padding: 2px 6px; border-radius: 5px; color: #e8e8e8;
}
.docs-content pre {
  background: #0d0d0d; border: 1px solid var(--border); border-radius: 10px;
  padding: 16px 18px; overflow-x: auto; margin-bottom: 18px;
  font-family: var(--mono); font-size: 13px; line-height: 1.65;
}
.docs-content pre code { background: none; border: none; padding: 0; color: #d4d4d4; }
.docs-content table { width: 100%; border-collapse: collapse; font-size: 14px; margin-bottom: 20px; }
.docs-content th, .docs-content td { text-align: left; padding: 10px 14px; border: 1px solid var(--border); }
.docs-content th { font-family: var(--mono); font-size: 12px; color: var(--text-faint); text-transform: uppercase; letter-spacing: 0.06em; background: #0e0e0e; }
.docs-content td { color: #c9c9c9; }
.docs-content hr { border: none; border-top: 1px solid var(--border); margin: 40px 0; }
.docs-content blockquote { border-left: 2px solid var(--border-strong); padding-left: 16px; color: var(--text-muted); margin-bottom: 14px; }

.docs-banner {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  border: 1px solid var(--border); background: var(--bg-chip);
  border-radius: 10px; padding: 12px 16px; margin-bottom: 32px;
  font-size: 13.5px; color: var(--text-muted); font-family: var(--mono);
}
.docs-banner a { color: var(--text); text-decoration: underline; text-decoration-color: #4a4a4a; text-underline-offset: 3px; white-space: nowrap; }