/* ---------- design tokens ---------- */
:root {
  --bg: #fafaf9;
  --bg-alt: #f4f4f2;
  --surface: #ffffff;
  --surface-2: #f8f7f5;
  --text: #0a0a0a;
  --text-2: #3f3f46;
  --muted: #6b6b6b;
  --border: #e5e4e0;
  --border-strong: #d4d3cd;
  --accent: #c2410c;        /* burnt-orange "Oscar" warm */
  --accent-2: #9a3412;
  --accent-soft: #fff1e6;
  --good: #15803d;
  --warn: #b45309;
  --code-bg: #1a1a1a;
  --code-fg: #ededed;
  --code-muted: #8a8a8a;
  --code-accent: #ffb380;
  --shadow-sm: 0 1px 0 rgba(0,0,0,.04);
  --shadow-md: 0 1px 2px rgba(0,0,0,.04), 0 8px 24px -16px rgba(0,0,0,.18);
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;
  --maxw: 1180px;
  --pad: clamp(16px, 4vw, 28px);
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --font-serif: "Fraunces", "Iowan Old Style", Georgia, serif;
}

[data-theme="dark"] {
  --bg: #0b0b0c;
  --bg-alt: #0f0f10;
  --surface: #131315;
  --surface-2: #18181b;
  --text: #f4f4f5;
  --text-2: #d4d4d8;
  --muted: #9ca3af;
  --border: #232326;
  --border-strong: #2e2e33;
  --accent: #fb923c;
  --accent-2: #fdba74;
  --accent-soft: #2a1a10;
  --good: #4ade80;
  --warn: #fbbf24;
  --code-bg: #0a0a0b;
  --code-fg: #ededed;
  --code-muted: #71717a;
  --code-accent: #ffb380;
  --shadow-sm: 0 1px 0 rgba(255,255,255,.04);
  --shadow-md: 0 1px 0 rgba(255,255,255,.03), 0 12px 32px -20px rgba(0,0,0,.7);
}

/* ---------- base ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }

h1, h2, h3 { font-family: var(--font-sans); letter-spacing: -0.02em; }
h1 em { font-family: var(--font-serif); font-style: italic; font-weight: 400; color: var(--accent); }
code, kbd, pre { font-family: var(--font-mono); }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--pad); }

/* Grid/flex children that contain <pre>/<code> need min-width: 0 so long lines
   scroll inside the child instead of stretching the track past the viewport. */
.hero-grid > *,
.cap-grid > *,
.results-grid > *,
.demo-grid > *,
.stats > *,
.author > *,
.arch-row > *,
.install > li > * { min-width: 0; }

.skip-link {
  position: absolute; left: -9999px; top: 8px;
  background: var(--text); color: var(--bg); padding: 8px 12px;
  border-radius: 6px; z-index: 100;
}
.skip-link:focus { left: 16px; }

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

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 500; font-size: 14px;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .15s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--text); color: var(--bg);
  border-color: var(--text);
}
.btn-primary:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-secondary {
  background: var(--surface); color: var(--text);
  border-color: var(--border-strong);
}
.btn-secondary:hover { border-color: var(--text); }
.btn-ghost {
  background: transparent; color: var(--text);
  border-color: var(--border);
}
.btn-ghost:hover { background: var(--surface-2); border-color: var(--border-strong); }

.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px;
  background: transparent; border: 1px solid var(--border);
  border-radius: var(--radius-sm); cursor: pointer;
  color: var(--text);
}
.icon-btn:hover { background: var(--surface-2); border-color: var(--border-strong); }
.icon-btn .i-moon { display: none; }
[data-theme="dark"] .icon-btn .i-sun { display: none; }
[data-theme="dark"] .icon-btn .i-moon { display: block; }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 60px; gap: 24px;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 600; font-size: 15px;
}
.brand-mark { color: var(--accent); display: inline-flex; }
.brand-text { letter-spacing: 0.02em; }
.brand-tag {
  font-family: var(--font-mono);
  font-size: 11px; color: var(--muted);
  padding: 2px 6px; border: 1px solid var(--border);
  border-radius: 4px;
}
.nav-links {
  display: flex; gap: 4px; align-items: center;
}
.nav-links a {
  font-size: 14px; color: var(--text-2);
  padding: 8px 12px; border-radius: var(--radius-sm);
  transition: background .15s, color .15s;
}
.nav-links a:hover { background: var(--surface-2); color: var(--text); }
.nav-actions { display: inline-flex; gap: 8px; align-items: center; }

@media (max-width: 880px) {
  .nav-links { display: none; }
}

/* ---------- hero ---------- */
.hero { padding: clamp(56px, 9vw, 96px) 0 clamp(32px, 6vw, 48px); }
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
}
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
}

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--muted);
  padding: 6px 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  margin-bottom: 24px;
}
.eyebrow .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 16%, transparent);
}

.hero h1 {
  font-size: clamp(36px, 6vw, 64px);
  line-height: 1.04;
  font-weight: 700;
  margin: 0 0 22px;
  letter-spacing: -0.035em;
}
.lede {
  font-size: clamp(16px, 1.6vw, 18px);
  color: var(--text-2);
  margin: 0 0 32px;
  max-width: 56ch;
}

.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 28px; }

.hero-meta {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-wrap: wrap; gap: 12px 20px;
  color: var(--muted); font-size: 13px;
}
.hero-meta kbd {
  font-size: 12px; padding: 2px 6px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 4px; color: var(--text);
  font-weight: 500;
}

/* terminal */
.hero-term {
  background: var(--code-bg);
  border-radius: var(--radius);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}
.term-chrome {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 14px;
  background: #0f0f10;
  border-bottom: 1px solid #1f1f22;
}
.term-dot {
  width: 11px; height: 11px; border-radius: 50%;
  background: #3a3a3f;
}
.term-dot[data-c="r"] { background: #ff5f56; }
.term-dot[data-c="y"] { background: #ffbd2e; }
.term-dot[data-c="g"] { background: #27c93f; }
.term-title {
  margin-left: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--code-muted);
}
.term-body {
  margin: 0;
  padding: 18px 20px;
  color: var(--code-fg);
  font-size: 13px;
  line-height: 1.65;
  overflow-x: auto;
  white-space: pre;
}
.term-body code { font-family: var(--font-mono); }
.term-body .p { color: var(--code-accent); }
.term-body .m { color: #9ca3af; }
.term-body .c { color: #71717a; }
.term-body .ok { color: #4ade80; }
.term-body .warn { color: #fbbf24; }

/* stats */
.stats {
  margin-top: clamp(40px, 6vw, 64px);
  padding-top: 32px;
  border-top: 1px solid var(--border);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}
@media (max-width: 800px) { .stats { grid-template-columns: repeat(2, 1fr); } }
.stat-n {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(28px, 3.5vw, 40px);
  letter-spacing: -0.02em;
  color: var(--text);
  line-height: 1;
}
.stat-l {
  margin-top: 8px;
  font-size: 12px; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.08em;
}

/* ---------- sections ---------- */
.section { padding: clamp(64px, 9vw, 104px) 0; }
.section-alt { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.section-head {
  max-width: 720px;
  margin-bottom: clamp(40px, 6vw, 64px);
}
.kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  text-transform: uppercase; letter-spacing: 0.12em;
  display: inline-block;
  margin-bottom: 16px;
}
.section-head h2 {
  font-size: clamp(28px, 4vw, 42px);
  margin: 0 0 16px;
  font-weight: 700;
  letter-spacing: -0.025em;
}
.section-head p {
  color: var(--text-2);
  font-size: clamp(15px, 1.4vw, 17px);
  margin: 0;
}

/* ---------- architecture ---------- */
.arch {
  display: grid;
  gap: 14px;
  position: relative;
}
.arch-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 20px;
  align-items: stretch;
}
@media (max-width: 720px) {
  .arch-row { grid-template-columns: 1fr; gap: 8px; }
}
.arch-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  padding-top: 18px;
}
.arch-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}
.arch-card.emphasize {
  border-color: var(--accent);
  background: linear-gradient(180deg, var(--accent-soft), var(--surface) 60%);
}
.arch-card h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 600;
  display: flex; align-items: baseline; gap: 10px;
  flex-wrap: wrap;
}
.arch-card h3 small {
  font-family: var(--font-mono); font-size: 12px;
  color: var(--muted); font-weight: 400;
}
.arch-card p { margin: 0 0 10px; color: var(--text-2); font-size: 14px; }
.arch-bullets {
  margin: 0; padding: 0; list-style: none;
  display: grid; gap: 4px;
  font-size: 13px; color: var(--muted);
}
.arch-bullets li::before { content: "·  "; color: var(--accent); }
.arch-bullets.two-col {
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
}
.arch-card code,
.arch-bullets code,
.cap code {
  font-size: 12.5px;
  background: var(--surface-2);
  padding: 1px 6px; border-radius: 4px;
  border: 1px solid var(--border);
}

/* ---------- capabilities ---------- */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
@media (max-width: 900px) { .cap-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .cap-grid { grid-template-columns: 1fr; } }

.cap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  transition: border-color .15s ease, transform .15s ease;
}
.cap:hover { border-color: var(--border-strong); transform: translateY(-1px); }
.cap-icon {
  width: 40px; height: 40px;
  border-radius: 8px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--accent-soft); color: var(--accent);
  margin-bottom: 16px;
}
.cap h3 { font-size: 16px; font-weight: 600; margin: 0 0 6px; }
.cap p { margin: 0 0 14px; color: var(--text-2); font-size: 14px; }
.cap-code {
  display: inline-block;
  font-size: 12px;
  color: var(--muted);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  padding: 4px 8px;
  border-radius: 4px;
}

/* ---------- results ---------- */
.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}
@media (max-width: 900px) { .results-grid { grid-template-columns: 1fr; } }
.result-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}
.result-h {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 14px;
}
.result-table { width: 100%; border-collapse: collapse; }
.result-table th, .result-table td {
  padding: 10px 0;
  font-size: 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.result-table tr:last-child th,
.result-table tr:last-child td { border-bottom: 0; }
.result-table th { color: var(--muted); font-weight: 400; }
.result-table td { color: var(--text); font-weight: 500; text-align: right; }

.callout {
  margin-top: 24px;
  padding: 16px 18px;
  background: var(--surface);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--text-2);
}
.callout code {
  background: var(--bg-alt); padding: 1px 6px;
  border-radius: 4px; border: 1px solid var(--border);
  font-size: 12px;
}
.callout strong { color: var(--text); }

/* ---------- comparison table ---------- */
.table-wrap { overflow-x: auto; }
.compare {
  width: 100%; border-collapse: collapse;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  font-size: 14px;
  min-width: 720px;
}
.compare th, .compare td {
  padding: 14px 16px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.compare thead th {
  background: var(--bg-alt);
  font-weight: 600;
  font-size: 13px;
  color: var(--text);
  text-align: center;
}
.compare tbody th {
  text-align: left;
  font-weight: 500;
  color: var(--text-2);
}
.compare tbody tr:last-child th,
.compare tbody tr:last-child td { border-bottom: 0; }
.compare .here {
  background: var(--accent);
  color: #fff;
  padding: 4px 10px; border-radius: 999px;
  font-size: 12px;
  display: inline-block;
}
.compare td.y { color: var(--good); font-size: 18px; }
.compare td.m { color: var(--warn); font-size: 18px; }
.compare td.n { color: var(--muted); }
.legend {
  margin-top: 12px;
  font-size: 13px;
  color: var(--muted);
}
.legend .y { color: var(--good); }
.legend .m { color: var(--warn); }
.legend .n { color: var(--muted); }

/* ---------- demo ---------- */
.demo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
@media (max-width: 900px) { .demo-grid { grid-template-columns: 1fr; } }
.demo-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.demo-head {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 8px;
}
.demo-card pre {
  margin: 0 0 16px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 16px;
  font-size: 13px;
  overflow-x: auto;
}
.demo-card pre.mono {
  background: var(--code-bg);
  color: var(--code-fg);
  border-color: transparent;
}
.demo-card pre.mono .c { color: var(--code-muted); }

/* ---------- install ---------- */
.install {
  list-style: none; padding: 0; margin: 0;
  display: grid; gap: 14px;
  counter-reset: install;
}
.install li {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 20px;
  align-items: start;
}
.install-n {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 600;
  color: var(--accent);
  width: 40px; height: 40px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
}
.install-body h3 { margin: 0 0 10px; font-size: 16px; font-weight: 600; }
.install-body pre {
  background: var(--code-bg);
  color: var(--code-fg);
  border-radius: 8px;
  padding: 14px 16px;
  margin: 0;
  font-size: 13px;
  overflow-x: auto;
}
.install-body pre .c { color: var(--code-muted); }
.install-body .small { font-size: 13px; color: var(--muted); margin: 10px 0 0; }

/* ---------- stack ---------- */
.stack {
  list-style: none; padding: 0; margin: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
@media (max-width: 700px) { .stack { grid-template-columns: 1fr; } }
.stack li {
  background: var(--surface);
  padding: 14px 18px;
  display: flex; align-items: baseline; gap: 16px;
  font-size: 14px;
}
.stack-k {
  font-family: var(--font-mono);
  font-size: 12px; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.08em;
  flex: 0 0 110px;
}
.stack-v { font-weight: 500; }

/* ---------- author ---------- */
.author {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 32px;
  align-items: start;
}
@media (max-width: 800px) { .author { grid-template-columns: 1fr; } }
.author-meta h2 { margin: 0 0 16px; font-size: clamp(28px, 4vw, 42px); letter-spacing: -0.025em; }
.author-meta p { color: var(--text-2); margin: 0 0 24px; }
.author-links { display: flex; gap: 12px; flex-wrap: wrap; }
.author-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}
.author-card-h {
  font-family: var(--font-mono);
  font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.1em; color: var(--accent);
  margin-bottom: 14px;
}
.author-card dl {
  margin: 0; display: grid; gap: 10px;
}
.author-card dt {
  font-size: 12px; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.08em;
}
.author-card dd { margin: 2px 0 0; font-size: 14px; }

/* ---------- footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 28px 0 36px;
  background: var(--bg);
}
.footer-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
}
@media (max-width: 720px) {
  .footer-inner { grid-template-columns: 1fr; text-align: center; }
}
.footer-brand {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 600;
}
.footer-brand .brand-mark { color: var(--accent); }
.footer-links {
  display: flex; gap: 18px; flex-wrap: wrap; justify-content: center;
  font-size: 14px; color: var(--muted);
}
.footer-meta { font-size: 13px; color: var(--muted); text-align: right; }
@media (max-width: 720px) { .footer-meta { text-align: center; } }

/* ---------- print ---------- */
@media print {
  .nav, .footer, .hero-cta, .icon-btn { display: none; }
  body { background: #fff; color: #000; }
  .hero-term, .demo-card pre.mono { color: #000; background: #fff; border: 1px solid #ccc; }
}

/* ---------- reduce motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}