:root {
  --bg: #f6f7f4;
  --surface: #ffffff;
  --surface-2: #eef1ec;
  --ink: #1e241f;
  --muted: #687168;
  --line: #d8ddd5;
  --accent: #0f8f62;
  --accent-dark: #076343;
  --code-bg: #111712;
  --code-ink: #eaf5eb;
  --shadow: 0 18px 60px rgba(22, 31, 23, 0.12);
  color-scheme: light;
}

body.openrouter {
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --code-bg: #0d1424;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.62;
}

.site-header {
  min-height: 48svh;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 430px);
  gap: 48px;
  align-items: end;
  padding: 72px clamp(24px, 6vw, 92px) 56px;
  background:
    linear-gradient(90deg, rgba(16, 35, 24, 0.9), rgba(16, 35, 24, 0.72)),
    repeating-linear-gradient(135deg, #112618 0, #112618 14px, #183420 14px, #183420 15px);
  color: #f8fff8;
}

body.openrouter .site-header {
  background:
    linear-gradient(90deg, rgba(13, 20, 36, 0.92), rgba(13, 20, 36, 0.76)),
    repeating-linear-gradient(135deg, #0f172a 0, #0f172a 14px, #172554 14px, #172554 15px);
}

.eyebrow {
  margin: 0 0 14px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #9be5bd;
}

body.openrouter .eyebrow { color: #bfdbfe; }

h1 {
  max-width: 980px;
  margin: 0;
  font-size: clamp(2.75rem, 7vw, 6.4rem);
  line-height: 0.96;
  letter-spacing: 0;
}

.lede {
  max-width: 760px;
  margin: 26px 0 0;
  font-size: clamp(1.02rem, 1.55vw, 1.28rem);
  color: rgba(248, 255, 248, 0.82);
}

.header-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.header-actions a {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 9px 14px;
  border: 1px solid rgba(248, 255, 248, 0.28);
  border-radius: 7px;
  color: #f8fff8;
  text-decoration: none;
  font-weight: 700;
  transition: background 160ms ease, transform 160ms ease;
}

.header-actions a:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-1px);
}

.status-panel {
  display: grid;
  gap: 12px;
  align-self: end;
  padding: 20px 0 0;
  border-top: 1px solid rgba(248, 255, 248, 0.24);
  color: rgba(248, 255, 248, 0.9);
  font-size: 0.95rem;
}

.layout {
  display: grid;
  grid-template-columns: 312px minmax(0, 1fr);
  gap: clamp(28px, 4vw, 60px);
  max-width: 1500px;
  margin: 0 auto;
  padding: 38px clamp(18px, 4vw, 64px) 80px;
}

.sidebar {
  position: sticky;
  top: 18px;
  align-self: start;
  max-height: calc(100svh - 36px);
  overflow: auto;
  padding: 18px 14px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.78);
  box-shadow: var(--shadow);
}

.sidebar-title {
  padding: 0 10px 12px;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-dark);
}

.sidebar nav { display: grid; gap: 2px; }
.sidebar a {
  display: block;
  border-radius: 6px;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.92rem;
  line-height: 1.35;
  padding: 8px 10px;
  transition: color 160ms ease, background 160ms ease, transform 160ms ease;
}
.sidebar a:hover {
  color: var(--accent-dark);
  background: var(--surface-2);
  transform: translateX(2px);
}
.toc-subitem { padding-left: 22px !important; font-size: 0.84rem !important; }

.search-panel {
  display: grid;
  gap: 10px;
  margin: 0 0 18px;
  padding: 0 0 18px;
  border-bottom: 1px solid var(--line);
}

.search-panel label {
  padding: 0 10px;
  color: var(--accent-dark);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.doc-search-input {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 10px 12px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  outline: none;
}

.doc-search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}

.search-results {
  display: grid;
  gap: 6px;
}

.search-result {
  display: grid;
  gap: 4px;
  padding: 10px;
  border-radius: 7px;
  color: var(--ink);
  text-decoration: none;
  background: rgba(238, 241, 236, 0.74);
  transition: background 160ms ease, transform 160ms ease;
}

.search-result:hover {
  background: #e5ece4;
  transform: translateY(-1px);
}

.search-result strong {
  font-size: 0.92rem;
  line-height: 1.25;
}

.search-result span {
  color: var(--accent-dark);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.search-result em {
  color: var(--muted);
  font-size: 0.82rem;
  font-style: normal;
  line-height: 1.35;
}

.search-empty {
  padding: 8px 10px;
  color: var(--muted);
  font-size: 0.84rem;
}

.content { min-width: 0; }
.doc { max-width: 900px; }
.doc h1 { display: none; }
.doc h2 {
  margin: 68px 0 16px;
  padding-top: 8px;
  font-size: clamp(1.9rem, 3vw, 2.8rem);
  line-height: 1.1;
  letter-spacing: 0;
}
.doc h2:first-of-type { margin-top: 16px; }
.doc h3 {
  margin: 36px 0 12px;
  font-size: clamp(1.22rem, 2vw, 1.55rem);
  line-height: 1.25;
}
.doc h4 { margin: 28px 0 8px; font-size: 1.04rem; }
.doc p, .doc li { color: #323a34; font-size: 1rem; }
.doc p { margin: 0 0 16px; }
.doc ul { margin: 0 0 24px; padding-left: 20px; }
.doc li { margin: 6px 0; }
.doc a {
  color: var(--accent-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
.doc code {
  border: 1px solid #dce2da;
  border-radius: 5px;
  padding: 0.08rem 0.32rem;
  background: #eef4ee;
  color: #173522;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.92em;
}
.code-block {
  margin: 18px 0 28px;
  border-radius: 8px;
  overflow: hidden;
  background: var(--code-bg);
  box-shadow: 0 16px 44px rgba(17, 23, 18, 0.16);
}
.code-block figcaption {
  padding: 10px 16px;
  border-bottom: 1px solid rgba(234, 245, 235, 0.12);
  color: #9be5bd;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
body.openrouter .code-block figcaption { color: #bfdbfe; }
.code-block pre { margin: 0; padding: 18px; overflow: auto; }
.code-block code {
  display: block;
  min-width: max-content;
  border: 0;
  padding: 0;
  background: transparent;
  color: var(--code-ink);
  font-size: 0.9rem;
  line-height: 1.58;
}
.doc h2, .doc h3 { scroll-margin-top: 28px; }

.home {
  min-height: 100svh;
  padding: clamp(28px, 6vw, 88px);
  display: grid;
  align-content: center;
  gap: 42px;
  background:
    linear-gradient(90deg, rgba(16, 35, 24, 0.92), rgba(15, 23, 42, 0.86)),
    repeating-linear-gradient(135deg, #102318 0, #102318 18px, #172554 18px, #172554 19px);
  color: #f8fff8;
}
.home-hero { max-width: 1040px; }
.home-search-wrap {
  max-width: 720px;
}

.home-search-wrap .search-panel {
  padding: 18px;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 8px;
  background: rgba(255,255,255,0.08);
}

.home-search-wrap .search-panel label {
  padding: 0;
  color: #bfdbfe;
}

.home-search-wrap .search-result {
  background: rgba(255,255,255,0.12);
  color: #f8fff8;
}

.home-search-wrap .search-result:hover {
  background: rgba(255,255,255,0.18);
}

.home-search-wrap .search-result span {
  color: #9be5bd;
}

.home-search-wrap .search-result em,
.home-search-wrap .search-empty {
  color: rgba(248,255,248,0.74);
}

.guide-switcher {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  max-width: 1080px;
}
.guide-link {
  display: grid;
  gap: 14px;
  min-height: 260px;
  align-content: end;
  padding: 26px;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 8px;
  color: #f8fff8;
  text-decoration: none;
  background: rgba(255,255,255,0.08);
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}
.guide-link:hover {
  transform: translateY(-4px);
  background: rgba(255,255,255,0.13);
  border-color: rgba(255,255,255,0.34);
}
.guide-link span {
  color: #9be5bd;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.openrouter-link span { color: #bfdbfe; }
.guide-link strong {
  max-width: 520px;
  font-size: clamp(1.5rem, 3vw, 2.35rem);
  line-height: 1.05;
}
.guide-link em {
  max-width: 560px;
  color: rgba(248,255,248,0.76);
  font-style: normal;
}

@media (max-width: 980px) {
  .site-header { grid-template-columns: 1fr; min-height: auto; padding-top: 56px; }
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: relative; top: 0; max-height: none; }
  .guide-switcher { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .site-header { padding: 42px 20px 38px; }
  .layout { padding: 24px 16px 56px; }
  .sidebar { padding: 14px 10px; }
  .doc h2 { margin-top: 48px; }
  .code-block pre { padding: 14px; }
  .home { padding: 24px 18px; }
  .guide-link { min-height: 220px; padding: 20px; }
}