:root {
  --navy: #082f53;
  --blue: #176b9b;
  --sky: #eaf5fb;
  --gold: #f1b82d;
  --ink: #182838;
  --muted: #56697a;
  --line: #d8e2e9;
  --paper: #fff;
  --soft: #f5f8fa;
  --success: #176b55;
  --warning: #8a5a00;
  --danger: #9f2d2d;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--soft); font: 16px/1.62 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
a { color: #075f93; }
code, pre { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; }
code { padding: .08rem .3rem; border-radius: 4px; background: #eef3f6; overflow-wrap: anywhere; }
.hero { color: white; background: linear-gradient(120deg, #052844 0%, #0d527d 68%, #15729e 100%); border-bottom: 6px solid var(--gold); }
.hero-inner, .page { width: min(1180px, calc(100% - 2rem)); margin: 0 auto; }
.hero-inner { padding: 3.2rem 0 2.6rem; }
.eyebrow { margin: 0 0 .35rem; color: #ffe092; font-size: .78rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
h1 { max-width: 940px; margin: 0; font-size: clamp(2.15rem, 5vw, 4rem); line-height: 1.05; letter-spacing: -.035em; }
.lede { max-width: 800px; margin: 1rem 0 0; font-size: 1.12rem; color: #dcecf6; }
.hero-meta { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1.5rem; }
.hero-meta span { padding: .35rem .7rem; border: 1px solid #72a7c5; border-radius: 999px; background: #ffffff10; font-size: .82rem; }
.doc-nav { position: sticky; z-index: 10; top: 0; background: #fff; border-bottom: 1px solid var(--line); box-shadow: 0 3px 12px #0a2d4512; }
.doc-nav-inner { width: min(1180px, calc(100% - 2rem)); margin: auto; display: flex; align-items: center; gap: .35rem; overflow-x: auto; padding: .55rem 0; }
.doc-nav a { flex: none; padding: .38rem .66rem; border-radius: 6px; color: var(--navy); text-decoration: none; font-size: .88rem; font-weight: 700; }
.doc-nav a:hover { background: var(--sky); }
.page { padding: 1.5rem 0 4rem; }
section { margin: 1rem 0; padding: 1.45rem; border: 1px solid var(--line); border-radius: 12px; background: var(--paper); box-shadow: 0 4px 18px #082f530a; }
h2 { margin: 0 0 .85rem; color: var(--navy); font-size: 1.6rem; line-height: 1.2; }
h3 { margin: 1.35rem 0 .5rem; color: #154e70; font-size: 1.08rem; }
p { margin: .55rem 0; }
ul, ol { margin: .5rem 0; padding-left: 1.35rem; }
li + li { margin-top: .3rem; }
.grid-2, .grid-3 { display: grid; gap: 1rem; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card { padding: 1rem; border: 1px solid var(--line); border-radius: 9px; background: #fbfdfe; }
.card strong { color: var(--navy); }
.callout { margin: .9rem 0; padding: .8rem 1rem; border-left: 5px solid var(--blue); border-radius: 5px; background: var(--sky); }
.callout.warning { border-color: var(--gold); background: #fff7df; }
.callout.restricted { border-color: var(--danger); background: #fff0f0; }
.callout.success { border-color: var(--success); background: #ebf8f3; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { padding: .62rem .7rem; border: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: white; background: var(--navy); }
tbody tr:nth-child(even) { background: #f6f9fb; }
pre:not(.mermaid) { overflow-x: auto; padding: 1rem; border-radius: 8px; color: #e7f3fa; background: #092d48; font-size: .82rem; }
.diagram { margin: 1rem 0; padding: 1rem; overflow-x: auto; border: 1px solid var(--line); border-radius: 9px; background: #fbfdfe; text-align: center; }
.mermaid { min-width: 640px; }
.diagram-note { margin: -.55rem 0 1rem; color: var(--muted); font-size: .84rem; }
.diagram-fallback { text-align: left; }
.diagram-fallback::before { display: block; margin-bottom: .5rem; color: var(--warning); content: "Diagram renderer unavailable — text definition shown below."; font-weight: 700; }
.noscript-note { margin: 0; padding: .75rem 1rem; color: #5f3c00; background: #fff7df; text-align: center; }
figure { margin: 1.1rem 0; }
figure img { display: block; width: 100%; max-height: 720px; object-fit: contain; border: 1px solid #b9c8d1; border-radius: 9px; background: #e8eef2; box-shadow: 0 5px 18px #082f5318; }
figcaption { margin-top: .5rem; color: var(--muted); font-size: .84rem; }
.screenshot-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.screenshot-grid figure { margin: 0; }
.shot-wide { grid-column: 1 / -1; }
.toc { columns: 2; column-gap: 2.4rem; }
.toc li { break-inside: avoid; }
.badge { display: inline-block; padding: .18rem .48rem; border-radius: 999px; color: white; background: var(--blue); font-size: .72rem; font-weight: 800; text-transform: uppercase; }
.badge.restricted { background: var(--danger); }
.back { float: right; font-size: .8rem; font-weight: 700; }
footer { padding: 1.5rem; color: #dcecf6; background: var(--navy); text-align: center; font-size: .85rem; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
@media (max-width: 760px) {
  .grid-2, .grid-3, .screenshot-grid { grid-template-columns: 1fr; }
  .shot-wide { grid-column: auto; }
  .toc { columns: 1; }
  section { padding: 1rem; }
  .mermaid { min-width: 560px; }
}
@media print {
  .doc-nav { display: none; }
  body { background: white; }
  section { break-inside: avoid; box-shadow: none; }
}