:root {
  --bg: #ffffff;
  --bg-alt: #f7f8fb;
  --surface: #ffffff;
  --text: #0f172a;
  --text-muted: #475569;
  --border: #e2e8f0;
  --accent: #2563eb;
  --accent-strong: #1d4ed8;
  --accent-soft: rgba(37, 99, 235, 0.10);
  --grad-from: #2563eb;
  --grad-to: #0ea5e9;
  --code-bg: #0f172a;
  --code-text: #e2e8f0;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 8px 24px rgba(15, 23, 42, 0.06);
  --radius: 12px;
  --radius-sm: 8px;
  --maxw: 1100px;
}

:root[data-theme="dark"] {
  --bg: #0b1020;
  --bg-alt: #0f172a;
  --surface: #121a2e;
  --text: #e6edf7;
  --text-muted: #94a3b8;
  --border: #1f2a44;
  --accent: #60a5fa;
  --accent-strong: #93c5fd;
  --accent-soft: rgba(96, 165, 250, 0.14);
  --grad-from: #60a5fa;
  --grad-to: #22d3ee;
  --code-bg: #060a17;
  --code-text: #e6edf7;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.35);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b1020;
    --bg-alt: #0f172a;
    --surface: #121a2e;
    --text: #e6edf7;
    --text-muted: #94a3b8;
    --border: #1f2a44;
    --accent: #60a5fa;
    --accent-strong: #93c5fd;
    --accent-soft: rgba(96, 165, 250, 0.14);
    --grad-from: #60a5fa;
    --grad-to: #22d3ee;
    --code-bg: #060a17;
    --code-text: #e6edf7;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

code, pre {
  font-family: "SF Mono", Menlo, Consolas, "Liberation Mono", "Roboto Mono", monospace;
  font-size: 0.92em;
}
:not(pre) > code {
  background: var(--accent-soft);
  color: var(--accent-strong);
  padding: 0.12em 0.4em;
  border-radius: 4px;
  font-size: 0.88em;
}

pre {
  background: var(--code-bg);
  color: var(--code-text);
  padding: 1.1rem 1.2rem;
  border-radius: var(--radius);
  overflow-x: auto;
  margin: 1rem 0 1.5rem;
  position: relative;
  box-shadow: var(--shadow);
  font-size: 0.88rem;
  line-height: 1.55;
}
pre code { background: transparent; color: inherit; padding: 0; }
/* highlight.js applies its own background — keep our pre styling */
pre code.hljs { background: transparent; padding: 0; }

.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--code-text);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 0.75rem;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s ease, background 0.15s ease;
}
pre:hover .copy-btn { opacity: 1; }
.copy-btn:hover { background: rgba(255, 255, 255, 0.15); }
.copy-btn.copied { background: rgba(34, 197, 94, 0.25); border-color: rgba(34, 197, 94, 0.5); }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.skip {
  position: absolute; left: -9999px;
  background: var(--accent); color: white;
  padding: 0.6rem 1rem; border-radius: 0 0 6px 0;
}
.skip:focus { left: 0; top: 0; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  height: 60px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}
.brand img { display: block; }
.primary-nav {
  display: flex;
  gap: 1.2rem;
  margin-left: 1rem;
  flex: 1;
}
.primary-nav a {
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 500;
}
.primary-nav a:hover { color: var(--text); text-decoration: none; }
.nav-actions { display: flex; align-items: center; gap: 0.5rem; }

.ghost-btn {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.45rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.9rem;
  background: var(--surface);
  transition: border-color 0.15s, background 0.15s;
}
.ghost-btn:hover { border-color: var(--accent); text-decoration: none; }

.theme-toggle {
  width: 36px; height: 36px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
}
.theme-toggle .i-moon { display: none; }
.theme-toggle .i-sun { display: block; }
:root[data-theme="dark"] .theme-toggle .i-sun,
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .i-sun { display: none; }
  :root:not([data-theme="light"]) .theme-toggle .i-moon { display: block; }
}
:root[data-theme="dark"] .theme-toggle .i-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .i-moon { display: block; }
:root[data-theme="light"] .theme-toggle .i-sun { display: block; }
:root[data-theme="light"] .theme-toggle .i-moon { display: none; }

/* Hero */
.hero {
  padding: 5rem 0 4rem;
  background:
    radial-gradient(1200px 480px at 50% -10%, var(--accent-soft), transparent 70%),
    var(--bg);
  border-bottom: 1px solid var(--border);
}
.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  margin-bottom: 1.25rem;
}
.hero h1 {
  font-size: clamp(2rem, 4.6vw, 3.6rem);
  line-height: 1.1;
  margin: 0 0 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.grad {
  background: linear-gradient(90deg, var(--grad-from), var(--grad-to));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.lede {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 720px;
  margin: 0 0 2rem;
}
.lede strong { color: var(--text); }

.cta-row { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-bottom: 1.75rem; }

.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.7rem 1.1rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: transform 0.05s ease, border-color 0.15s, background 0.15s;
}
.btn:hover { text-decoration: none; border-color: var(--accent); }
.btn:active { transform: translateY(1px); }
.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.25);
}
.btn.primary:hover { background: var(--accent-strong); border-color: var(--accent-strong); }
.btn.ghost { background: transparent; }
.btn code { background: rgba(255, 255, 255, 0.18); color: inherit; padding: 0.1em 0.45em; border-radius: 4px; }
.btn:not(.primary) code { background: var(--accent-soft); color: var(--accent-strong); }

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1rem;
  align-items: center;
  font-size: 0.9rem;
  color: var(--text-muted);
}
.badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
}
.badge code { background: transparent; color: var(--text); padding: 0; }
.badge .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.18);
}
.meta-link { color: var(--text-muted); }
.meta-link:hover { color: var(--accent); }

/* Sections */
.section { padding: 4.5rem 0; }
.section.alt { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin: 0 0 0.5rem;
  letter-spacing: -0.01em;
}
.section h3 { margin: 1.75rem 0 0.6rem; font-size: 1.1rem; }
.section-lede { color: var(--text-muted); max-width: 720px; margin: 0 0 2rem; }

/* Grid cards */
.grid { display: grid; gap: 1rem; }
.grid.features { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid.install { grid-template-columns: 1fr; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem 1.4rem 1.5rem;
  box-shadow: var(--shadow);
  transition: transform 0.12s ease, border-color 0.15s;
}
.card:hover { transform: translateY(-2px); border-color: var(--accent); }
.card h3 { margin: 0 0 0.5rem; font-size: 1.05rem; }
.card p, .card ul { margin: 0; color: var(--text-muted); font-size: 0.95rem; }
.card pre { margin: 0.6rem 0 0; font-size: 0.82rem; }

.bullets { padding-left: 1.1rem; }
.bullets li { margin: 0.2rem 0; }

/* Benchmarks */
.bench {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}
.bench-row {
  display: grid;
  grid-template-columns: 160px 1fr;
  align-items: center;
  gap: 0.9rem;
  margin: 0.55rem 0;
}
.bench-label { font-weight: 600; color: var(--text); font-size: 0.95rem; }
.bench-bar {
  background: var(--bg-alt);
  border-radius: 6px;
  overflow: hidden;
  height: 28px;
  position: relative;
}
.bench-fill {
  display: inline-flex;
  align-items: center;
  height: 100%;
  width: var(--w, 0%);
  background: linear-gradient(90deg, color-mix(in srgb, var(--accent) 35%, transparent), color-mix(in srgb, var(--accent) 55%, transparent));
  color: var(--text);
  padding: 0 0.7rem;
  border-radius: 6px;
  font-variant-numeric: tabular-nums;
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
}
.bench-fill.primary {
  background: linear-gradient(90deg, var(--grad-from), var(--grad-to));
  color: white;
}

@media (max-width: 600px) {
  .bench-row { grid-template-columns: 1fr; gap: 0.3rem; }
}

.repro {
  margin-top: 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  padding: 0.4rem 1rem;
}
.repro summary {
  cursor: pointer;
  padding: 0.5rem 0;
  font-weight: 600;
  color: var(--text-muted);
}
.repro[open] summary { color: var(--text); }
.repro pre { margin: 0.5rem 0 0.75rem; }

/* Users list */
.users {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.6rem 1rem;
}
.users li {
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  font-size: 0.92rem;
  color: var(--text-muted);
}
.users li strong { color: var(--text); margin-right: 0.35rem; }
.aside { color: var(--text-muted); margin-top: 1.5rem; font-size: 0.92rem; }

.papers { list-style: none; padding: 0; }
.papers li {
  padding: 1rem 1.2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  margin-bottom: 0.7rem;
}

/* Footer */
.site-footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 3rem 0 2rem;
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-top: 2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}
.site-footer h4 { color: var(--text); font-size: 0.95rem; margin: 0 0 0.6rem; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin: 0.25rem 0; }
.subfoot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 0.5rem;
}
.subfoot code { background: var(--surface); color: var(--text); border: 1px solid var(--border); }

@media (max-width: 720px) {
  .primary-nav { display: none; }
  .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .hero { padding: 3rem 0 2.5rem; }
  .section { padding: 3rem 0; }
}
