:root {
  color-scheme: light;
  --ink: #0a1018;
  --ink-2: #344153;
  --muted: #647287;
  --line: rgba(10, 16, 24, 0.1);
  --surface: #ffffff;
  --bg: #f7f9fc;
  --blue: #176dff;
  --teal: #0b8f7c;
  --dark: #09101a;
  --mint: #72ecd3;
  --radius: 22px;
  --shadow: 0 22px 70px rgba(15, 28, 45, 0.12);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", Inter, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.58;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.wrap { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.narrow { width: min(850px, calc(100% - 40px)); margin: 0 auto; }

.site-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(247, 249, 252, 0.88);
  backdrop-filter: blur(18px) saturate(150%);
}
.nav-inner { min-height: 64px; display: flex; align-items: center; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 850; text-decoration: none; }
.brand img { width: 30px; height: auto; }
.nav-links { display: flex; align-items: center; gap: 22px; margin-left: auto; color: var(--ink-2); font-size: 14px; font-weight: 650; }
.nav-links a { text-decoration: none; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--blue); }
.nav-button { padding: 8px 15px; border-radius: 999px; background: var(--ink); color: #fff !important; }

.hero {
  position: relative;
  overflow: hidden;
  padding: 104px 0 86px;
  background:
    radial-gradient(circle at 8% 15%, rgba(23, 109, 255, 0.17), transparent 31%),
    radial-gradient(circle at 91% 0, rgba(11, 143, 124, 0.17), transparent 33%);
}
.hero-grid { display: grid; grid-template-columns: 1.12fr 0.88fr; gap: 64px; align-items: center; }
.eyebrow { color: var(--teal); text-transform: uppercase; letter-spacing: 0.1em; font-size: 12px; font-weight: 850; }
h1 { margin: 14px 0 20px; font-size: clamp(45px, 7.4vw, 82px); line-height: 0.98; letter-spacing: -0.045em; }
.hero h1 span { background: linear-gradient(100deg, var(--blue), #0ba4bb, var(--teal)); background-clip: text; color: transparent; }
.lead { margin: 0; color: var(--ink-2); max-width: 710px; font-size: clamp(18px, 2.1vw, 22px); line-height: 1.55; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 12px 23px; border-radius: 999px; background: var(--ink); color: #fff; text-decoration: none; font-weight: 780; }
.button.alt { background: #fff; color: var(--ink); border: 1px solid var(--line); }
.button.blue { background: var(--blue); }
.hero-note { margin-top: 18px; color: var(--muted); font-size: 13px; }

.passport-card {
  position: relative;
  min-height: 430px;
  border-radius: 30px;
  padding: 28px;
  color: #f5f8fc;
  background: radial-gradient(circle at 85% 5%, rgba(23,109,255,.42), transparent 38%), linear-gradient(145deg,#080e17,#102131 58%,#08251f);
  box-shadow: 0 40px 100px rgba(4, 14, 28, 0.3);
  transform: rotate(2deg);
}
.passport-card::after { content:""; position:absolute; inset:12px; border:1px solid rgba(255,255,255,.14); border-radius:22px; pointer-events:none; }
.passport-card small { display:block; color:var(--mint); font-weight:850; letter-spacing:.1em; text-transform:uppercase; }
.passport-card h2 { margin:52px 0 8px; font-size:34px; line-height:1.05; letter-spacing:-.035em; }
.passport-id { color:#9fb0c2; font:600 12px ui-monospace,monospace; }
.passport-status { display:grid; gap:9px; margin-top:45px; }
.passport-status span { display:flex; justify-content:space-between; gap:14px; padding:9px 0; border-top:1px solid rgba(255,255,255,.12); color:#acb9c8; font-size:13px; }
.passport-status b { color:#fff; }
.passport-card .truth { margin:22px 0 0; padding-top:14px; border-top:1px solid rgba(255,255,255,.12); color:#8190a2; font-size:11px; line-height:1.4; }

section { padding: 86px 0; }
.section-head { max-width: 780px; margin-bottom: 38px; }
.section-head h2 { margin: 10px 0 12px; font-size: clamp(34px, 5vw, 58px); line-height: 1.04; letter-spacing: -0.035em; }
.section-head p { margin: 0; color: var(--muted); font-size: 19px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 15px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 17px; }
.feature, .step, .panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 1px 2px rgba(10,16,24,.03), 0 10px 35px rgba(10,16,24,.05);
}
.feature, .step { padding: 25px; }
.feature .number, .step .number { display:inline-grid; place-items:center; min-width:32px; height:32px; border-radius:50%; background:#eaf2ff; color:var(--blue); font-size:12px; font-weight:900; }
.feature h3, .step h3 { margin: 16px 0 8px; font-size: 19px; line-height:1.2; }
.feature p, .step p { margin: 0; color: var(--muted); font-size: 14px; }

.dark { background: var(--dark); color: #f4f8fc; }
.dark .section-head p { color: #9cabbc; }
.dark .eyebrow { color: var(--mint); }
.truth-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:12px; }
.truth-row { padding:20px; border:1px solid rgba(255,255,255,.12); border-radius:15px; background:rgba(255,255,255,.045); }
.truth-row b { display:block; color:var(--mint); }
.truth-row span { display:block; margin-top:5px; color:#a9b6c5; font-size:14px; }

.verify-box { padding:30px; border-radius:var(--radius); background:#fff; border:1px solid var(--line); box-shadow:var(--shadow); }
.verify-form { display:flex; gap:10px; }
.verify-form input { flex:1; min-width:0; min-height:52px; border:1px solid #cfd8e5; border-radius:12px; padding:12px 15px; font:600 15px ui-monospace,monospace; }
.verify-form button { border:0; border-radius:12px; padding:10px 22px; background:var(--blue); color:#fff; font:800 15px var(--font); cursor:pointer; }
.verify-help { color:var(--muted); font-size:13px; }
.verify-result { display:none; margin-top:18px; padding:18px; border-radius:14px; background:#f0f5fb; }
.verify-result.show { display:block; }
.verify-result.error { background:#fff0f1; color:#8f2430; }
.result-badges { display:flex; flex-wrap:wrap; gap:8px; margin-top:10px; }
.result-badges span { padding:5px 9px; border-radius:999px; background:#fff; border:1px solid var(--line); font-size:12px; font-weight:800; }

.table-wrap { overflow-x:auto; border:1px solid var(--line); border-radius:16px; background:#fff; }
table { width:100%; border-collapse:collapse; min-width:680px; }
th, td { text-align:left; vertical-align:top; padding:15px 17px; border-bottom:1px solid var(--line); }
th { color:var(--muted); font-size:12px; text-transform:uppercase; letter-spacing:.07em; background:#f9fbfd; }
td { font-size:14px; }
tr:last-child td { border-bottom:0; }

.callout { padding:30px; border-radius:var(--radius); background:linear-gradient(115deg,#0d6ff8,#0b9985); color:#fff; box-shadow:var(--shadow); }
.callout h2 { margin:0 0 8px; font-size:clamp(28px,4vw,44px); letter-spacing:-.03em; }
.callout p { margin:0; max-width:800px; color:rgba(255,255,255,.82); }
.callout .button { margin-top:22px; background:#fff; color:var(--ink); }

.doc-layout { display:grid; grid-template-columns:230px minmax(0,1fr); gap:48px; align-items:start; padding:62px 0 96px; }
.toc { position:sticky; top:92px; display:grid; gap:8px; font-size:13px; }
.toc b { margin-bottom:5px; text-transform:uppercase; letter-spacing:.08em; color:var(--muted); }
.toc a { color:var(--ink-2); text-decoration:none; }
.toc a:hover { color:var(--blue); }
.doc { min-width:0; }
.doc > h1 { font-size:clamp(42px,6vw,68px); }
.doc > p.lead { font-size:20px; }
.doc h2 { scroll-margin-top:90px; margin:70px 0 14px; font-size:32px; letter-spacing:-.025em; }
.doc h3 { margin:30px 0 8px; font-size:21px; }
.doc p, .doc li { color:var(--ink-2); }
.doc li + li { margin-top:7px; }
.doc pre { position:relative; overflow:auto; margin:16px 0; padding:20px; border-radius:14px; background:#0b111a; color:#dce8f5; font-size:13px; line-height:1.6; }
.doc :not(pre) > code { padding:2px 6px; border-radius:6px; background:#eaf0f7; color:#17304f; font-size:.88em; overflow-wrap:anywhere; word-break:break-word; }
.doc-note { margin:20px 0; padding:18px 20px; border-left:4px solid var(--blue); border-radius:8px; background:#edf4ff; color:#253e60; }
.doc-warning { border-left-color:#d18618; background:#fff7e8; color:#614818; }
.endpoint { display:inline-block; margin-right:7px; border-radius:5px; padding:2px 7px; background:#dff6f1; color:#076e5e; font-size:11px; font-weight:900; }
.endpoint.post { background:#e8efff; color:#2458b8; }
.endpoint.patch { background:#fff0d7; color:#8b5809; }
.schema-tree { padding:20px; border:1px solid var(--line); border-radius:14px; background:#fff; font:13px/1.7 ui-monospace,monospace; white-space:pre-wrap; overflow-wrap:anywhere; }

.faq { display:grid; gap:10px; }
.faq details { border:1px solid var(--line); border-radius:14px; background:#fff; padding:16px 18px; }
.faq summary { cursor:pointer; font-weight:800; }
.faq p { color:var(--muted); }

footer { border-top:1px solid var(--line); padding:38px 0 52px; color:var(--muted); font-size:13px; }
.footer-inner { display:flex; justify-content:space-between; flex-wrap:wrap; gap:20px; }
.footer-links { display:flex; flex-wrap:wrap; gap:18px; }
.footer-links a { text-decoration:none; }

@media (max-width: 930px) {
  .hero-grid { grid-template-columns:1fr; }
  .passport-card { width:min(520px,100%); margin:0 auto; transform:none; }
  .grid-4 { grid-template-columns:repeat(2,1fr); }
  .grid-3 { grid-template-columns:1fr; }
  .doc-layout { grid-template-columns:1fr; }
  .toc { position:static; grid-template-columns:repeat(2,minmax(0,1fr)); padding:18px; border:1px solid var(--line); border-radius:14px; background:#fff; }
}
@media (max-width: 680px) {
  .nav-links a:not(.nav-button) { display:none; }
  .hero { padding:76px 0 60px; }
  section { padding:64px 0; }
  .grid-4, .truth-grid { grid-template-columns:1fr; }
  .verify-form { flex-direction:column; }
  .toc { grid-template-columns:1fr; }
}