:root {
  color-scheme: dark;
  --bg: #07080c;
  --panel: #0c0e15;
  --panel-2: #11141d;
  --line: rgba(213, 222, 255, 0.13);
  --line-strong: rgba(213, 222, 255, 0.24);
  --text: #eef1fb;
  --muted: #9ba5bb;
  --dim: #667086;
  --cyan: #16ddff;
  --blue: #428fff;
  --violet: #b462ff;
  --green: #64e6ae;
  --amber: #f0c56b;
  --header-height: 64px;
  --sidebar-width: 252px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 28px); }
body { margin: 0; background: var(--bg); color: var(--text); line-height: 1.65; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
code, pre { font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace; }
code { color: #b9eaff; }
.doc-section p code, .callout code, .constraint-list code { overflow-wrap: anywhere; word-break: break-word; }

.skip-link {
  position: fixed; left: 12px; top: -80px; z-index: 100;
  padding: 10px 14px; background: var(--cyan); color: #001014; border-radius: 6px;
}
.skip-link:focus { top: 10px; }

.docs-header {
  position: fixed; inset: 0 0 auto 0; z-index: 20; height: var(--header-height);
  display: flex; align-items: center; justify-content: space-between; padding: 0 24px;
  background: rgba(7, 8, 12, 0.9); border-bottom: 1px solid var(--line); backdrop-filter: blur(18px);
}
.docs-brand, .header-actions { display: flex; align-items: center; }
.docs-brand { gap: 10px; font-size: 17px; font-weight: 730; letter-spacing: -0.02em; }
.docs-brand img { border-radius: 7px; filter: none; }
.docs-brand em { padding-left: 10px; border-left: 1px solid var(--line-strong); color: var(--muted); font-style: normal; font-weight: 500; }
.header-actions { gap: 20px; color: var(--muted); font-size: 13px; }
.header-actions a:hover { color: var(--cyan); }
.version { padding: 4px 9px; border: 1px solid var(--line); border-radius: 999px; color: #bdc6da; }
.nav-toggle { display: none; border: 1px solid var(--line-strong); border-radius: 6px; padding: 5px 9px; background: transparent; color: var(--text); }

.docs-shell { display: grid; grid-template-columns: var(--sidebar-width) minmax(0, 1fr); padding-top: var(--header-height); }
.docs-sidebar {
  position: fixed; top: var(--header-height); bottom: 0; left: 0; width: var(--sidebar-width);
  padding: 27px 18px 48px 24px; overflow-y: auto; border-right: 1px solid var(--line); background: #080a0f;
}
.docs-sidebar nav { display: flex; flex-direction: column; }
.nav-label { margin: 20px 10px 6px; color: var(--dim); font-size: 10px; font-weight: 750; letter-spacing: 0.15em; text-transform: uppercase; }
.nav-label:first-child { margin-top: 0; }
.docs-sidebar a { padding: 6px 10px; border-left: 1px solid transparent; border-radius: 0 5px 5px 0; color: var(--muted); font-size: 13px; }
.docs-sidebar a:hover { color: var(--text); background: rgba(255, 255, 255, 0.03); }
.docs-sidebar a.is-active { border-left-color: var(--cyan); background: rgba(22, 221, 255, 0.06); color: var(--cyan); }

.docs-content { grid-column: 2; min-width: 0; width: 100%; max-width: 1120px; padding: 0 64px; }
.docs-hero { position: relative; overflow: clip; padding: 104px 0 92px; border-bottom: 1px solid var(--line); }
.docs-hero::after {
  content: ""; position: absolute; width: 460px; height: 460px; right: -180px; top: -90px; pointer-events: none;
  background: radial-gradient(circle, rgba(66, 143, 255, 0.13), transparent 68%); filter: blur(8px);
}
.eyebrow, .kicker { margin: 0 0 14px; color: var(--cyan); font-size: 11px; font-weight: 760; letter-spacing: 0.15em; text-transform: uppercase; }
h1 { max-width: 850px; margin: 0; font-size: clamp(48px, 7vw, 88px); line-height: 0.98; letter-spacing: -0.065em; }
.lead { max-width: 760px; margin: 29px 0 0; color: #abb5ca; font-size: 19px; line-height: 1.7; }
.hero-actions, .reference-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 31px; }
.hero-actions a, .reference-actions a { padding: 10px 15px; border: 1px solid var(--line-strong); border-radius: 7px; color: #d6dced; font-size: 13px; }
.hero-actions a:hover, .reference-actions a:hover { border-color: var(--cyan); color: var(--cyan); }
.hero-actions .primary, .reference-actions .primary { border-color: var(--cyan); background: var(--cyan); color: #001014; font-weight: 720; }

.install-block, .code-panel { margin-top: 42px; overflow: hidden; border: 1px solid var(--line); border-radius: 9px; background: #090b10; }
.install-block { max-width: 700px; }
.install-block > div, .code-panel > div { display: flex; align-items: center; justify-content: space-between; min-height: 39px; padding: 0 13px; border-bottom: 1px solid var(--line); background: rgba(255,255,255,0.02); color: var(--dim); font-size: 11px; }
.copy-button { border: 0; padding: 4px 6px; background: transparent; color: var(--muted); cursor: pointer; font-size: 11px; }
.copy-button:hover { color: var(--cyan); }
pre { max-width: 100%; margin: 0; padding: 19px 21px; overflow-x: auto; color: #d9e0f1; font-size: 13px; line-height: 1.7; tab-size: 4; }
pre code { color: inherit; }
.requirement { margin: 12px 0 0; color: var(--dim); font-size: 12px; }

.doc-section { padding: 88px 0; border-bottom: 1px solid var(--line); }
.doc-section > p { max-width: 800px; color: var(--muted); }
.section-heading { display: grid; grid-template-columns: 54px minmax(0, 1fr); gap: 26px; margin-bottom: 35px; }
.section-heading.compact { margin-bottom: 24px; }
.section-number { margin: 5px 0 0; color: var(--dim); font-size: 11px; font-family: "SFMono-Regular", Consolas, monospace; }
.section-heading h2 { margin: 0; font-size: clamp(31px, 4vw, 48px); line-height: 1.05; letter-spacing: -0.045em; }
.section-heading > div > p:last-child { max-width: 720px; margin: 16px 0 0; color: var(--muted); }
.section-heading .kicker { margin-bottom: 9px; }

.posture-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.posture-card { position: relative; min-width: 0; padding: 27px; overflow: hidden; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); }
.posture-card::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 2px; background: var(--cyan); }
.posture-card.accent-violet::before { background: var(--violet); }
.card-label { margin: 0 0 11px; color: var(--dim); font-size: 10px; font-weight: 740; letter-spacing: 0.13em; text-transform: uppercase; }
.posture-card h3 { margin: 0; font-size: 25px; letter-spacing: -0.03em; }
.posture-card > p:not(.card-label), .posture-card li { color: var(--muted); font-size: 14px; }
.posture-card ul { min-height: 126px; padding-left: 18px; }
.posture-card li { margin: 7px 0; }
.inline-call { display: block; padding-top: 15px; border-top: 1px solid var(--line); font-size: 12px; }

.decision-table { margin-top: 18px; overflow-x: auto; border: 1px solid var(--line); border-radius: 9px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 13px 16px; border-bottom: 1px solid var(--line); text-align: left; }
tr:last-child td { border-bottom: 0; }
th { background: rgba(255,255,255,0.025); color: var(--dim); font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; }
td { color: var(--muted); }
td:first-child { color: var(--text); }

.code-panel { max-width: 850px; margin-top: 27px; }
.callout { max-width: 850px; margin-top: 21px; padding: 17px 19px; border-left: 2px solid var(--cyan); background: rgba(22, 221, 255, 0.045); }
.callout.warning { border-left-color: var(--amber); background: rgba(240, 197, 107, 0.045); }
.callout strong { font-size: 13px; }
.callout p { margin: 5px 0 0; color: var(--muted); font-size: 13px; }
.api-strip { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 21px; }
.api-strip span { padding: 7px 10px; border: 1px solid var(--line); border-radius: 6px; color: var(--muted); font-size: 11px; }
.responsibility-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; max-width: 850px; margin-top: 22px; overflow: hidden; border: 1px solid var(--line); border-radius: 8px; background: var(--line); }
.responsibility-grid > div { padding: 19px; background: var(--panel); }
.responsibility-grid strong { font-size: 12px; }
.responsibility-grid p { margin: 6px 0 0; color: var(--muted); font-size: 13px; }
.tabs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; max-width: 100%; }
.tabs > * { min-width: 0; }
.tabs .code-panel { min-width: 0; }
.api-note, .source-note { font-size: 13px; }
.subheading { max-width: 850px; margin: 38px 0 10px; font-size: 19px; letter-spacing: -0.02em; }
.phase-heading { max-width: 850px; margin: 30px 0 9px; color: #dce3f2; font-size: 15px; letter-spacing: -0.01em; }
.wide-code { max-width: 920px; }
.constraint-list { max-width: 800px; margin-top: 22px; padding: 19px 23px 19px 41px; border: 1px solid var(--line); border-radius: 8px; color: var(--muted); font-size: 13px; }
.constraint-list li { margin: 7px 0; }

.auth-flow { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); max-width: 850px; margin-top: 22px; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.auth-flow div { position: relative; min-height: 143px; padding: 18px; border-right: 1px solid var(--line); background: var(--panel); }
.auth-flow div:last-child { border: 0; }
.auth-flow span { display: block; margin-bottom: 18px; color: var(--cyan); font-size: 11px; font-family: monospace; }
.auth-flow strong, .auth-flow small { display: block; }
.auth-flow strong { font-size: 13px; }
.auth-flow small { margin-top: 7px; color: var(--dim); line-height: 1.45; }

.security-grid, .api-map { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.security-grid article, .api-map article { padding: 22px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); }
.security-grid span { color: var(--cyan); font-size: 10px; font-weight: 750; letter-spacing: 0.11em; text-transform: uppercase; }
.security-grid h3, .api-map h3 { margin: 9px 0 0; font-size: 18px; }
.security-grid p, .api-map p { margin: 8px 0 0; color: var(--muted); font-size: 13px; }
.security-notes { margin-top: 28px; padding: 25px; border: 1px solid var(--line); border-radius: 8px; }
.security-notes h3 { margin: 0; font-size: 16px; }
.security-notes ul { margin: 13px 0 0; padding-left: 19px; color: var(--muted); font-size: 13px; }
.security-notes li { margin: 8px 0; }
.source-note a { color: var(--cyan); }

.checklist { max-width: 850px; margin-top: 28px; border-top: 1px solid var(--line); }
.checklist div { display: grid; grid-template-columns: 36px minmax(0, 1fr); gap: 13px; padding: 13px 0; border-bottom: 1px solid var(--line); }
.checklist span { color: var(--dim); font: 11px monospace; }
.checklist p { margin: 0; color: var(--muted); font-size: 13px; }
.api-map article code { display: inline-block; margin: 2px 3px 2px 0; padding: 2px 5px; border-radius: 4px; background: rgba(22, 221, 255, 0.055); }

.docs-footer { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 45px 0 60px; color: var(--dim); font-size: 12px; }
.docs-footer div { display: flex; align-items: center; gap: 9px; color: var(--text); }
.docs-footer img { border-radius: 6px; }
.docs-footer a:hover { color: var(--cyan); }

@media (max-width: 900px) {
  :root { --sidebar-width: 228px; }
  .docs-content { padding: 0 35px; }
  .tabs { grid-template-columns: 1fr; }
  .auth-flow { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .auth-flow div:nth-child(2) { border-right: 0; }
  .auth-flow div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
}

@media (max-width: 720px) {
  :root { --header-height: 58px; }
  .docs-header { padding: 0 14px; }
  .header-actions > a, .version { display: none; }
  .nav-toggle { display: block; }
  .docs-shell { display: block; }
  .docs-sidebar {
    z-index: 15; width: min(84vw, 290px); transform: translateX(-102%); transition: transform 180ms ease;
    box-shadow: 16px 0 40px rgba(0,0,0,0.45);
  }
  .docs-sidebar.is-open { transform: translateX(0); }
  .docs-content { width: 100%; max-width: none; padding: 0 20px; }
  .docs-hero { padding: 70px 0 66px; }
  h1 { font-size: clamp(43px, 15vw, 64px); }
  .lead { font-size: 16px; }
  .doc-section { padding: 65px 0; }
  .section-heading { grid-template-columns: 30px minmax(0, 1fr); gap: 8px; }
  .posture-grid, .responsibility-grid, .security-grid, .api-map { grid-template-columns: 1fr; }
  .posture-card ul { min-height: 0; }
  .auth-flow { grid-template-columns: 1fr; }
  .auth-flow div { min-height: 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .auth-flow div:nth-child(3) { border-bottom: 1px solid var(--line); }
  .docs-footer { align-items: flex-start; flex-direction: column; }
  pre { padding: 16px; font-size: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .docs-sidebar { transition: none; }
}