:root {
  --bg: #FFFFFF;
  --bg-soft: #F5F7FB;
  --surface: #FFFFFF;
  --border: #E6EAF2;
  --border-soft: #EFF2F7;
  --text: #131824;
  --text-2: #55617A;
  --muted: #636E80;
  --chip: #F0F3F9;

  
  --guide: #A35200;
  --guide-strong: #8A4500;
  --guide-bg: #FFF4E5;
  --guide-bg-2: #FFF9F1;
  --guide-line: #F8D9AE;

  
  --api: #3E4C66;
  --api-strong: #273247;
  --api-bg: #E9EDF5;
  --api-bg-2: #F4F6FA;
  --api-line: #D3DAE6;

  --primary: #F18C00;
  --primary-hover: #D97E00;
  --on-primary: #131824;

  
  --header: #131A28;
  --header-line: #2A3346;
  --header-field: #1A2232;
  --header-text: #C2CBDB;
  --code-bg: #1A2232;
  --code-line: #2A3346;
  --code-text: #E9EDF5;
  --code-muted: #8A96AB;
  --code-str: #F2C98A;
  --code-fn: #F5A33A;
  --code-var: #C9D3E6;

  --ok: #0B7F47;
  --warn: #B45309;
  --err: #B91C1C;

  --radius: 14px;
  --radius-sm: 8px;
  --header-h: 64px;
  --sidebar-w: 280px;

  --font: "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", sans-serif;
  --font-display: "Segoe UI Variable Display", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "Cascadia Mono", "Cascadia Code", Consolas, ui-monospace, "SF Mono", monospace;

  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #0D111A;
  --bg-soft: #121826;
  --surface: #161D2C;
  --border: #263047;
  --border-soft: #1D2537;
  --text: #E9EDF5;
  --text-2: #A3AEC3;
  --muted: #8F9BB1;
  --chip: #1D2537;
  --guide: #F5A33A;
  --guide-strong: #FFC06B;
  --guide-bg: #2A1D0B;
  --guide-bg-2: #1C150C;
  --guide-line: #4A3212;
  --api: #AAB7CF;
  --api-strong: #D0D8E6;
  --api-bg: #1E2739;
  --api-bg-2: #182031;
  --api-line: #2E3A52;
  --code-bg: #0F1522;
  --ok: #34D399;
  --warn: #FBBF24;
  --err: #F59E9E;
  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0D111A;
    --bg-soft: #121826;
    --surface: #161D2C;
    --border: #263047;
    --border-soft: #1D2537;
    --text: #E9EDF5;
    --text-2: #A3AEC3;
    --muted: #8F9BB1;
    --chip: #1D2537;
    --guide: #F5A33A;
    --guide-strong: #FFC06B;
    --guide-bg: #2A1D0B;
    --guide-bg-2: #1C150C;
    --guide-line: #4A3212;
    --api: #AAB7CF;
    --api-strong: #D0D8E6;
    --api-bg: #1E2739;
    --api-bg-2: #182031;
    --api-line: #2E3A52;
    --code-bg: #0F1522;
    --ok: #34D399;
    --warn: #FBBF24;
    --err: #F59E9E;
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: calc(var(--header-h) + 16px); }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}
a { color: var(--guide); text-underline-offset: 3px; }
a:hover { color: var(--guide-strong); }
.section-api a { color: var(--api); }
.section-api a:hover { color: var(--api-strong); }
h1, h2, h3 { font-family: var(--font-display); letter-spacing: -0.02em; line-height: 1.2; margin: 0; }
p { margin: 0; }
code, pre, .mono { font-family: var(--font-mono); }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.icon { width: 18px; height: 18px; flex-shrink: 0; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.icon-lg { width: 24px; height: 24px; }

.site-header {
  position: sticky; top: 0; z-index: 50;
  height: var(--header-h);
  background: var(--header);
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 0 32px;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-logo { display: block; height: 26px; width: auto; }
.brand-docs { font-size: 11px; font-weight: 700; letter-spacing: 0.08em; color: #F5A33A; background: #3A2708; padding: 3px 8px; border-radius: 6px; }

.section-tabs { display: flex; gap: 4px; }
.section-tabs a {
  display: flex; align-items: center; gap: 8px;
  height: 40px; padding: 0 14px; border-radius: var(--radius-sm);
  color: var(--header-text); font-size: 15px; font-weight: 600; text-decoration: none;
}
.section-tabs a:hover { color: #FFFFFF; background: #1E2739; }
.section-tabs a[aria-current="page"].tab-guide { color: #FFFFFF; background: #3A2708; }
.section-tabs a[aria-current="page"].tab-api { color: #FFFFFF; background: #2A3346; }
.section-tabs a[aria-current="page"].tab-log { color: #FFFFFF; background: #2A3346; }

.header-tools { position: relative; display: flex; align-items: center; gap: 10px; }
.search {
  display: flex; align-items: center; gap: 10px;
  width: 280px; height: 40px; padding: 0 12px;
  border: 1px solid var(--header-line); border-radius: var(--radius-sm);
  background: var(--header-field); color: #8A96AB;
}
.search input {
  flex: 1; min-width: 0; border: 0; background: transparent; color: #FFFFFF;
  font: inherit; font-size: 14px; outline: none;
}
.search input::placeholder { color: #8A96AB; }
.search:focus-within { border-color: var(--primary); }
.kbd { font-family: var(--font); font-size: 12px; padding: 1px 6px; border: 1px solid var(--header-line); border-radius: 4px; white-space: nowrap; }
.version-pill { height: 40px; padding: 0 12px; display: flex; align-items: center; border: 1px solid var(--header-line); border-radius: var(--radius-sm); color: var(--header-text); font-family: var(--font-mono); font-size: 14px; }
.icon-btn {
  width: 40px; height: 40px; display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--header-line); border-radius: var(--radius-sm);
  background: transparent; color: var(--header-text); cursor: pointer;
}
.icon-btn:hover { color: #FFFFFF; background: #1E2739; }
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  height: 40px; padding: 0 16px; border-radius: var(--radius-sm);
  background: var(--primary); color: var(--on-primary) !important; font-size: 14px; font-weight: 700; text-decoration: none;
}
.btn-primary:hover { background: var(--primary-hover); }
.menu-btn { display: none; }

.home { background: var(--bg-soft); min-height: calc(100vh - var(--header-h)); }
.home-main { max-width: 1200px; margin: 0 auto; padding: 56px 24px 72px; display: flex; flex-direction: column; gap: 48px; }
.hero { display: flex; flex-direction: column; gap: 14px; max-width: 820px; }
.eyebrow { font-size: 12px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.hero .eyebrow { font-family: var(--font-mono); text-transform: none; letter-spacing: 0.02em; font-size: 13px; color: var(--guide); }
.hero h1 { font-size: clamp(34px, 5vw, 48px); font-weight: 800; letter-spacing: -0.03em; line-height: 1.1; }
.hero p { font-size: 19px; color: var(--text-2); }
.hero strong { color: var(--text); }

.doors { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.door {
  background: var(--surface); border: 1px solid var(--border); border-radius: 16px;
  padding: 32px; display: flex; flex-direction: column; gap: 20px;
}
.door-head { display: flex; align-items: center; gap: 14px; }
.door-icon { width: 48px; height: 48px; border-radius: 12px; display: flex; align-items: center; justify-content: center; }
.door--guide .door-icon { background: var(--guide-bg); color: var(--guide); }
.door--api .door-icon { background: var(--api-bg); color: var(--api); }
.door-kicker { display: flex; flex-direction: column; gap: 2px; }
.door-kicker b { font-size: 12px; letter-spacing: 0.1em; }
.door--guide .door-kicker b { color: var(--guide); }
.door--api .door-kicker b { color: var(--api); }
.door-kicker span { font-size: 14px; color: var(--muted); }
.door h2 { font-size: 28px; font-weight: 800; }
.door p { color: var(--text-2); }
.door-links { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--border-soft); }
.door-links a { display: block; padding: 12px 0; border-bottom: 1px solid var(--border-soft); color: var(--text); font-size: 15px; font-weight: 600; text-decoration: none; }
.door-links a:hover { color: var(--guide); }
.door--api .door-links a:hover { color: var(--api); }
.door-cta {
  align-self: flex-start; display: inline-flex; align-items: center; gap: 8px;
  height: 44px; padding: 0 18px; border-radius: 10px;
  font-size: 15px; font-weight: 700; text-decoration: none; color: var(--on-primary) !important;
}
.door--guide .door-cta { background: var(--primary); }
.door--api .door-cta { background: var(--header); color: #FFFFFF !important; }
:root[data-theme="dark"] .door--api .door-cta { background: #3E4C66; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .door--api .door-cta { background: #3E4C66; } }

.apps-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.apps-head h2 { font-size: 24px; font-weight: 800; }
.apps-head span { font-size: 15px; color: var(--muted); }
.apps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-top: 20px; }
.app-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; display: flex; flex-direction: column; gap: 14px; }
.app-card-head { display: flex; align-items: center; gap: 12px; }
.app-icon { width: 40px; height: 40px; border-radius: 10px; background: var(--guide-bg); color: var(--guide); display: flex; align-items: center; justify-content: center; }
.app-card h3 { font-size: 18px; font-weight: 700; letter-spacing: -0.01em; }
.app-card p { font-size: 15px; color: var(--text-2); }
.pair { display: flex; gap: 8px; margin-top: auto; }
.pair a {
  flex: 1; height: 44px; border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700; text-decoration: none;
}
.pair .to-guide { border: 1px solid var(--guide-line); background: var(--guide-bg-2); color: var(--guide); }
.pair .to-api { border: 1px solid var(--api-line); background: var(--api-bg-2); color: var(--api); }

.core-strip { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; padding: 20px 24px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.core-strip .eyebrow { white-space: nowrap; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; margin: 0; padding: 0; }
.chips a { display: inline-block; font-size: 14px; font-weight: 600; padding: 6px 12px; border-radius: 999px; background: var(--chip); color: var(--text); text-decoration: none; }
.chips a:hover { background: var(--guide-bg); color: var(--guide); }

.docs-layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr) 240px;
  min-height: calc(100vh - var(--header-h));
}
.docs-layout--api { grid-template-columns: var(--sidebar-w) minmax(0, 1fr) minmax(420px, 540px); }

.sidebar {
  position: sticky; top: var(--header-h); align-self: start;
  height: calc(100vh - var(--header-h)); overflow-y: auto;
  background: var(--bg-soft); border-right: 1px solid var(--border);
  padding: 28px 20px 40px; display: flex; flex-direction: column; gap: 22px;
}
.nav-group { display: flex; flex-direction: column; gap: 2px; }
.nav-title { font-size: 12px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); padding: 0 10px 6px; }
.nav-group ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; }
.nav-group a, .nav-label {
  display: flex; justify-content: space-between; align-items: center; gap: 8px;
  padding: 7px 10px; border-radius: var(--radius-sm);
  font-size: 14px; color: var(--text-2); text-decoration: none;
}
.nav-label { color: var(--text); font-weight: 600; }
.nav-group a:hover { background: var(--chip); color: var(--text); }
.nav-group .nested { margin-left: 12px; }
.section-guide .nav-group a[aria-current="page"] { background: var(--guide-bg); color: var(--guide-strong); font-weight: 700; }
.section-api .nav-group a[aria-current="page"] { background: var(--api-bg); color: var(--api-strong); font-weight: 700; }
.nav-method { font-family: var(--font-mono); font-size: 11px; font-weight: 500; }

.content { padding: 40px 56px 64px; display: flex; flex-direction: column; gap: 24px; max-width: 880px; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; margin: 0; padding: 0; font-size: 14px; color: var(--muted); }
.breadcrumb li + li::before { content: "›"; margin-right: 8px; }
.breadcrumb a { color: var(--muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--text); }
.content h1 { font-size: clamp(30px, 3.5vw, 38px); font-weight: 800; letter-spacing: -0.03em; }
.content h2 { font-size: 20px; font-weight: 800; margin-top: 8px; }
.lead { font-size: 18px; line-height: 1.65; color: var(--text-2); }
.content p { color: var(--text-2); }
.content section { display: flex; flex-direction: column; gap: 10px; }
.inline-code { font-family: var(--font-mono); font-size: 0.86em; background: var(--chip); padding: 2px 6px; border-radius: 4px; color: var(--text); word-break: break-all; }

.badges { display: flex; gap: 8px; flex-wrap: wrap; }
.badge { font-size: 12px; font-weight: 700; padding: 4px 10px; border-radius: 999px; background: var(--chip); color: var(--text-2); }
.badge--api { background: var(--api-bg); color: var(--api-strong); }
.badge--guide { background: var(--guide-bg); color: var(--guide-strong); }

.steps { list-style: none; margin: 0; padding: 0; counter-reset: step; }
.steps li { display: flex; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--border-soft); counter-increment: step; }
.steps li::before {
  content: counter(step);
  flex-shrink: 0; width: 32px; height: 32px; border-radius: 999px;
  background: var(--guide-bg); color: var(--guide-strong);
  font-size: 14px; font-weight: 700; display: flex; align-items: center; justify-content: center;
}
.steps b { display: block; font-size: 16px; color: var(--text); }
.steps span { font-size: 15px; color: var(--text-2); }

.callout { display: flex; gap: 14px; padding: 16px 20px; border-radius: 12px; }
.callout .icon { width: 22px; height: 22px; margin-top: 2px; }
.callout b { display: block; font-size: 15px; }
.callout p { font-size: 15px; color: var(--text); }
.callout--api { background: var(--api-bg-2); border: 1px solid var(--api-line); color: var(--api); }
.callout--api b { color: var(--api-strong); }
.callout--api a { color: var(--api) !important; font-weight: 700; }
.callout--guide { background: var(--guide-bg-2); border: 1px solid var(--guide-line); color: var(--guide); }
.callout--guide b { color: var(--guide-strong); }
.callout--guide a { color: var(--guide) !important; font-weight: 700; }

.pager { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; padding-top: 8px; }
.pager a { display: flex; flex-direction: column; gap: 2px; text-decoration: none; color: var(--text); }
.pager a small { font-size: 13px; color: var(--muted); }
.pager a b { font-size: 15px; }
.pager .next { align-items: flex-end; }

.toc { position: sticky; top: var(--header-h); align-self: start; padding: 40px 24px; display: flex; flex-direction: column; gap: 10px; border-left: 1px solid var(--border-soft); }
.toc ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.toc a { font-size: 14px; color: var(--text-2); text-decoration: none; }
.toc a.is-active { color: var(--guide-strong); font-weight: 600; }

.endpoint { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border-radius: 10px; background: var(--bg-soft); border: 1px solid var(--border); overflow-x: auto; }
.method { font-family: var(--font-mono); font-size: 13px; font-weight: 600; color: #FFFFFF; background: #3E4C66; padding: 3px 8px; border-radius: 6px; }
.endpoint code { font-size: 15px; white-space: nowrap; }
.endpoint code em { font-style: normal; color: var(--api); }

.param-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.param-table th { text-align: left; font-size: 12px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); padding: 8px 12px 8px 0; border-bottom: 1px solid var(--border); }
.param-table td { padding: 12px 12px 12px 0; border-bottom: 1px solid var(--border-soft); vertical-align: top; color: var(--text-2); }
.param-table td:first-child { font-family: var(--font-mono); color: var(--text); white-space: nowrap; }
.req { font-size: 12px; font-weight: 700; color: var(--warn); margin-left: 6px; font-family: var(--font); }

.status { font-family: var(--font-mono); font-weight: 600; }
.status--ok { color: var(--ok); }
.status--warn { color: var(--warn); }
.status--err { color: var(--err); }

.code-column { background: var(--header); padding: 32px 28px; display: flex; flex-direction: column; gap: 22px; }
.code-column-inner { position: sticky; top: calc(var(--header-h) + 32px); display: flex; flex-direction: column; gap: 22px; }
.code-title { font-size: 12px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--header-text); }
.code-panel { border-radius: 12px; background: var(--code-bg); border: 1px solid var(--code-line); overflow: hidden; }
.code-tabs { display: flex; align-items: center; gap: 4px; padding: 8px 10px; border-bottom: 1px solid var(--code-line); }
.code-tabs [role="tab"] {
  height: 32px; padding: 0 12px; border-radius: 6px; border: 0;
  background: transparent; color: #8A96AB; font: inherit; font-size: 13px; font-weight: 600; cursor: pointer;
}
.code-tabs [role="tab"][aria-selected="true"] { background: var(--code-line); color: #FFFFFF; }
.code-tabs .spacer { flex: 1; }
.copy-btn { width: 32px; height: 32px; border: 0; border-radius: 6px; background: transparent; color: #8A96AB; display: inline-flex; align-items: center; justify-content: center; cursor: pointer; }
.copy-btn:hover { color: #FFFFFF; background: var(--code-line); }
.copy-btn.is-done { color: var(--code-fn); }
pre.code { margin: 0; padding: 18px 20px; font-size: 13px; line-height: 1.7; color: var(--code-text); overflow-x: auto; white-space: pre; tab-size: 2; }
.code-panel--solo pre.code { padding-top: 18px; }
pre.code .c { color: var(--code-muted); }
pre.code .s { color: var(--code-str); }
pre.code .f { color: var(--code-fn); }
pre.code .v { color: var(--code-var); }
pre.code .ph { color: var(--code-str); background: rgba(242, 201, 138, 0.12); border-radius: 3px; }

.sprite { display: none; }
.header-start { display: flex; align-items: center; gap: 10px; }
.icon-sm { width: 16px; height: 16px; }

.search-results {
  position: absolute; top: calc(100% + 8px); left: 0; z-index: 60;
  width: 380px; max-height: 60vh; overflow-y: auto;
  margin: 0; padding: 6px; list-style: none;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}
.search-results a { display: flex; flex-direction: column; gap: 2px; padding: 8px 10px; border-radius: 6px; color: var(--text); font-size: 14px; font-weight: 600; text-decoration: none; }
.search-results a small { font-size: 12px; font-weight: 400; color: var(--muted); }
.search-results a:hover, .search-results a[aria-selected="true"] { background: var(--chip); color: var(--text); }
.search-results .empty { padding: 8px 10px; font-size: 14px; color: var(--muted); }

.content h3 { font-size: 16px; font-weight: 700; margin-top: 4px; }
.content ul { margin: 0; padding-left: 22px; display: flex; flex-direction: column; gap: 6px; color: var(--text-2); }
.table-scroll { overflow-x: auto; }

@media (max-width: 1280px) {
  .docs-layout { grid-template-columns: var(--sidebar-w) minmax(0, 1fr); }
  .toc { display: none; }
  .docs-layout--api { grid-template-columns: var(--sidebar-w) minmax(0, 1fr); }
  .docs-layout--api .code-column { grid-column: 2; }
  .code-column-inner { position: static; }
}

@media (max-width: 1100px) {
  .search { width: 200px; }
  .docs-layout, .docs-layout--api { grid-template-columns: minmax(0, 1fr); }
  .docs-layout--api .code-column { grid-column: 1; }
  .menu-btn { display: inline-flex; }
  
  .sidebar {
    position: fixed; top: var(--header-h); left: 0; z-index: 40;
    width: min(320px, 86vw); transform: translateX(-100%);
    transition: transform 0.2s ease; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  }
  .sidebar.is-open { transform: none; }
  .content { padding: 32px 24px 56px; }
}

@media (max-width: 860px) {
  .site-header { padding: 0 16px; }
  
  .section-tabs a span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
  .search { display: none; }
  .btn-primary { display: none; }
  .doors, .apps { grid-template-columns: minmax(0, 1fr); }
  .home-main { padding: 40px 16px 56px; }
  .door { padding: 24px; }
  .content { padding: 28px 16px 48px; }
  .code-column { padding: 24px 16px; }
  .param-table td:first-child { white-space: normal; }
  .req { display: block; margin-left: 0; }
  .section-tabs a { padding: 0 10px; }
}

@media (max-width: 480px) {
  
  .brand-docs, .version-pill, .section-tabs .tab-log { display: none; }
  .site-header { gap: 8px; padding: 0 12px; }
  .header-tools { gap: 6px; }
}

@media (prefers-reduced-motion: reduce) {
  .sidebar { transition: none; }
}