/* Flame Docs — unified design system v1 */
:root {
  --brand: #ff6a3d;
  --brand-strong: #e74f1d;
  --brand-soft: #fff1ea;
  --brand-glow: rgba(255, 106, 61, 0.32);

  --ink: #15171c;
  --ink-soft: #2b2e36;
  --muted: #6b7280;
  --line: rgba(15, 17, 22, 0.08);
  --line-strong: rgba(15, 17, 22, 0.14);

  --bg: #fafaf7;
  --panel: #ffffff;
  --panel-tint: #fffaf7;

  --code-bg: #0d1117;
  --code-ink: #e6edf3;
  --code-line: #30363d;

  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;

  --shadow-sm: 0 1px 2px rgba(15, 17, 22, 0.04), 0 2px 8px rgba(15, 17, 22, 0.04);
  --shadow-md: 0 4px 16px rgba(15, 17, 22, 0.06), 0 12px 32px rgba(15, 17, 22, 0.06);
  --shadow-glow: 0 16px 40px var(--brand-glow);

  --font-sans: ui-sans-serif, system-ui, -apple-system, "PingFang SC",
    "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "JetBrains Mono", Menlo,
    Consolas, "PingFang SC", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  color: var(--ink);
  background:
    radial-gradient(circle at 90% -10%, rgba(255, 106, 61, 0.10), transparent 38%),
    radial-gradient(circle at -10% 12%, rgba(15, 17, 22, 0.05), transparent 36%),
    var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "tnum" 1, "cv11" 1;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
hr {
  border: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
  margin: 28px 0;
}
::selection { background: var(--brand); color: #fff; }

/* ---------- Layout ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  background: rgba(255, 255, 255, 0.78);
  border-bottom: 1px solid var(--line);
}
.site-header__inner {
  max-width: 1080px; margin: 0 auto;
  padding: 14px 20px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
}
.site-logo {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 700; letter-spacing: 0.2px; color: var(--ink);
  font-size: 15px;
}
.site-logo__mark {
  display: inline-grid; place-items: center;
  width: 28px; height: 28px;
  border-radius: 8px;
  background: linear-gradient(140deg, var(--brand) 0%, var(--brand-strong) 100%);
  color: #fff; font-weight: 800; font-size: 14px;
  box-shadow: 0 6px 18px var(--brand-glow);
}
.site-nav { display: flex; gap: 6px; flex-wrap: wrap; }
.site-nav a {
  font-size: 13px; color: var(--muted);
  padding: 8px 12px; border-radius: 999px;
  transition: background-color 160ms ease, color 160ms ease;
}
.site-nav a:hover { background: var(--brand-soft); color: var(--brand-strong); }
.site-nav a.is-active { background: var(--brand); color: #fff; }

.page {
  max-width: 1080px; margin: 0 auto;
  padding: 28px 20px 64px;
}

.hero {
  padding: 36px 28px 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(120% 120% at 0% 0%, rgba(255, 106, 61, 0.10), transparent 50%),
    linear-gradient(180deg, #ffffff, var(--panel-tint));
  box-shadow: var(--shadow-md);
  position: relative; overflow: hidden;
}
.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 600; letter-spacing: 0.6px; text-transform: uppercase;
  color: var(--brand-strong);
  padding: 6px 10px; border-radius: 999px;
  background: var(--brand-soft);
  margin-bottom: 12px;
}
.hero h1 {
  margin: 0;
  font-size: clamp(28px, 4vw, 44px);
  letter-spacing: -0.01em;
  line-height: 1.15;
}
.hero p {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.8;
  max-width: 56ch;
}

/* ---------- Cards / Sections ---------- */
.section {
  margin-top: 22px;
  padding: 24px 24px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, #ffffff, var(--panel-tint));
  box-shadow: var(--shadow-sm);
}
.section h2 {
  margin: 0;
  font-size: clamp(20px, 2.2vw, 26px);
  letter-spacing: -0.005em;
}
.section h3 {
  margin: 14px 0 8px;
  font-size: 16px;
  color: var(--ink-soft);
}
.section p {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.8;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}
.openclaw-box { margin-top: 16px; }
@media (max-width: 720px) {
  .grid { grid-template-columns: 1fr; }
}

.nav-link {
  display: flex; align-items: center; justify-content: space-between;
  gap: 14px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: #ffffff;
  box-shadow: var(--shadow-sm);
  transition: transform 160ms ease, border-color 160ms ease,
    box-shadow 200ms ease, background-color 160ms ease;
}
.nav-link strong {
  display: block; font-size: 16px; color: var(--ink); margin-bottom: 4px;
}
.nav-link span {
  display: block; font-size: 13px; color: var(--muted); line-height: 1.6;
}
.nav-link .arrow {
  width: 32px; height: 32px; flex: 0 0 32px;
  border-radius: 50%;
  display: grid; place-items: center;
  color: var(--brand-strong);
  background: var(--brand-soft);
  font-size: 16px;
  transition: transform 200ms ease, background-color 200ms ease, color 200ms ease;
}
.nav-link:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 106, 61, 0.4);
  box-shadow: var(--shadow-glow);
}
.nav-link:hover .arrow {
  background: var(--brand);
  color: #fff;
  transform: translateX(2px);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 14px; font-weight: 600;
  background: var(--ink); color: #fff;
  border: 1px solid var(--ink);
  cursor: pointer;
  transition: transform 120ms ease, background-color 160ms ease, box-shadow 200ms ease;
}
.btn:hover { transform: translateY(-1px); background: var(--ink-soft); box-shadow: var(--shadow-md); }
.btn--brand { background: var(--brand); border-color: var(--brand); }
.btn--brand:hover { background: var(--brand-strong); border-color: var(--brand-strong); }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.btn--ghost:hover { background: var(--brand-soft); color: var(--brand-strong); border-color: var(--brand); }

/* ---------- Code & copy ---------- */
pre, code { font-family: var(--font-mono); }
pre {
  background: var(--code-bg);
  color: var(--code-ink);
  padding: 16px 18px;
  border-radius: var(--radius-md);
  overflow-x: auto;
  font-size: 13px; line-height: 1.7;
  border: 1px solid var(--code-line);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.04) inset;
}
:not(pre) > code {
  background: rgba(15, 17, 22, 0.06);
  padding: 2px 6px; border-radius: 6px; font-size: 0.9em;
  color: var(--ink);
}
.code-block {
  position: relative; margin: 14px 0;
}
.code-block .copy,
button.copy {
  position: absolute; top: 10px; right: 10px;
  padding: 6px 10px; font-size: 12px; line-height: 1;
  color: var(--code-ink); background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15); border-radius: 8px;
  cursor: pointer; backdrop-filter: blur(4px);
  transition: background-color 160ms ease, color 160ms ease;
}
.code-block .copy:hover,
button.copy:hover { background: var(--brand); color: #fff; border-color: var(--brand); }

/* ---------- Tables ---------- */
table {
  width: 100%; border-collapse: collapse;
  margin-top: 14px;
  font-size: 14px;
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--line);
}
th, td {
  text-align: left; padding: 12px 14px;
  border-bottom: 1px solid var(--line);
}
th { background: var(--panel-tint); font-weight: 600; color: var(--ink); }
tr:last-child td { border-bottom: 0; }

/* ---------- Steps ---------- */
.step {
  position: relative;
  padding: 18px 20px 18px 60px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: #fff;
  margin-top: 12px;
  box-shadow: var(--shadow-sm);
}
.step__num {
  position: absolute; top: 18px; left: 18px;
  width: 28px; height: 28px;
  border-radius: 50%;
  display: grid; place-items: center;
  background: var(--brand); color: #fff;
  font-weight: 700; font-size: 13px;
  box-shadow: 0 6px 16px var(--brand-glow);
}

/* ---------- Misc ---------- */
.tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; padding: 4px 10px; border-radius: 999px;
  background: var(--brand-soft); color: var(--brand-strong); font-weight: 600;
}
.metric {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px 14px;
  background: var(--panel-tint);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  margin-top: 10px;
}
.metric span { color: var(--muted); font-size: 13px; }
.metric strong { font-family: var(--font-mono); font-size: 13px; color: var(--ink); }

.eyebrow {
  display: inline-block;
  font-size: 12px; font-weight: 600; letter-spacing: 0.6px; text-transform: uppercase;
  color: var(--brand-strong);
  padding: 6px 10px; border-radius: 999px;
  background: var(--brand-soft);
  margin-bottom: 10px;
}

.site-footer {
  margin-top: 48px;
  padding: 24px 20px;
  text-align: center;
  font-size: 12px; color: var(--muted);
  border-top: 1px solid var(--line);
}

/* ---------- Image lightbox helpers (used by shot-button) ---------- */
.shot-button {
  display: block; padding: 0; margin: 8px 0 0; cursor: zoom-in;
  background: transparent; border: 1px solid var(--line);
  border-radius: var(--radius-md); overflow: hidden;
  transition: transform 160ms ease, box-shadow 200ms ease, border-color 160ms ease;
}
.shot-button:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); border-color: var(--brand); }
.shot-button img { display: block; width: 100%; }