:root { --bg: #ffffff; --ink: #0f172a; --soft: #5b6478; --line: #e5e8f0; --tint: #f5f7fc; --blue: #2348d9; --blue-soft: #e8edff; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16.5px/1.7 "IBM Plex Sans", system-ui, sans-serif; }
a { color: var(--blue); }
code { font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: .9em; background: var(--tint); border: 1px solid var(--line); padding: 1px 6px; border-radius: 5px; }
.hd { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; justify-content: space-between; height: 60px; padding: 0 22px; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.95); backdrop-filter: blur(6px); }
.logo { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 19px; color: var(--ink); text-decoration: none; }
.logo svg { width: 26px; height: 26px; color: var(--blue); }
.logo span { color: var(--blue); }
.hd nav { display: flex; gap: 18px; font-size: 15px; font-weight: 500; align-items: center; }
.hd nav a { color: var(--ink); text-decoration: none; }
.hd .go { background: var(--blue); color: #fff !important; padding: 7px 13px; border-radius: 8px; }
.shell { display: grid; grid-template-columns: 250px minmax(0, 1fr) 220px; max-width: 1360px; margin: 0 auto; }
.nav { border-right: 1px solid var(--line); padding: 26px 18px; position: sticky; top: 60px; height: calc(100vh - 60px); overflow: auto; }
.nav-h { font-size: 12px; text-transform: uppercase; letter-spacing: .1em; color: var(--soft); font-weight: 700; margin: 18px 0 6px; }
.nav-h:first-child { margin-top: 0; }
.nav ul, .toc ul { list-style: none; margin: 0; padding: 0; }
.nav a { display: block; padding: 6px 10px; border-radius: 7px; color: var(--ink); text-decoration: none; font-size: 14.5px; line-height: 1.4; }
.nav a:hover { background: var(--tint); }
.nav a.on { background: var(--blue-soft); color: var(--blue); font-weight: 600; }
.main { padding: 34px 40px 50px; min-width: 0; }
.home-only { grid-column: span 2; }
.hero { padding: 10px 0 26px; border-bottom: 1px solid var(--line); margin-bottom: 26px; }
.eyebrow { color: var(--blue); font-weight: 700; font-size: 13px; text-transform: uppercase; letter-spacing: .1em; margin: 0; }
.hero h1 { font-size: clamp(30px, 4.6vw, 44px); line-height: 1.15; margin: 8px 0 10px; letter-spacing: -.02em; }
.hero p { color: var(--soft); margin: 0 0 18px; max-width: 680px; }
.search input { width: 100%; max-width: 560px; height: 46px; border: 1px solid var(--line); border-radius: 10px; padding: 0 14px; font: inherit; background: var(--tint); }
.search input:focus { outline: 2px solid var(--blue); background: #fff; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(320px, 100%), 1fr)); gap: 14px; }
.doc { border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px; text-decoration: none; color: var(--ink); display: flex; flex-direction: column; gap: 6px; }
.doc:hover { border-color: var(--blue); box-shadow: 0 6px 18px -12px rgba(35,72,217,.5); }
.doc h2 { font-size: 18px; line-height: 1.35; margin: 0; }
.doc p { color: var(--soft); margin: 0; font-size: 15px; }
.badge { align-self: flex-start; background: var(--blue-soft); color: var(--blue); font-size: 12px; font-weight: 600; padding: 2px 9px; border-radius: 6px; }
.m { color: var(--soft); font-size: 13px; }
.callout { background: linear-gradient(135deg, #0f1d5c, var(--blue)); color: #fff; border-radius: 14px; padding: 24px 26px; margin: 34px 0 10px; }
.callout h2 { margin: 0 0 6px; font-size: 21px; }
.callout p { margin: 0 0 14px; color: #dbe3ff; }
.btn { display: inline-block; background: #fff; color: var(--blue); text-decoration: none; font-weight: 700; padding: 10px 18px; border-radius: 9px; }
.doc-page { max-width: 820px; }
.crumbs { font-size: 14px; color: var(--soft); margin: 0 0 6px; }
.crumbs a { text-decoration: none; }
.doc-page h1 { font-size: clamp(28px, 4.2vw, 38px); line-height: 1.2; letter-spacing: -.02em; margin: 0 0 8px; }
.info { color: var(--soft); font-size: 14px; margin: 0 0 22px; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.prose .lead { font-size: 19px; color: #24304a; }
.prose h2 { font-size: 24px; margin: 36px 0 8px; padding-top: 6px; scroll-margin-top: 80px; letter-spacing: -.01em; }
.prose h3 { font-size: 18.5px; margin: 24px 0 4px; }
.prose li { margin: 4px 0; }
.prose table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 15px; border: 1px solid var(--line); border-radius: 10px; display: block; overflow-x: auto; }
.prose th, .prose td { padding: 9px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.prose th { background: var(--tint); font-weight: 600; }
.terms dt { font-weight: 700; margin-top: 12px; }
.terms dd { margin: 2px 0 0 0; color: var(--soft); padding-left: 14px; border-left: 3px solid var(--blue-soft); }
.note { background: #fff8e6; border: 1px solid #f5d98b; border-radius: 10px; padding: 14px 16px; margin: 16px 0; }
.flow { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; color: var(--soft); }
.flow span { background: var(--blue-soft); color: var(--blue); font-weight: 600; padding: 6px 12px; border-radius: 8px; }
.checklist { list-style: none; padding: 0; }
.checklist li { padding-left: 28px; position: relative; }
.checklist li::before { content: "✔"; position: absolute; left: 2px; color: var(--blue); font-weight: 700; }
.faq .qa { border: 1px solid var(--line); border-radius: 10px; padding: 12px 16px; margin: 10px 0; }
.faq h3 { margin: 0 0 4px; font-size: 16.5px; }
.faq p { margin: 0; color: var(--soft); }
.next { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 26px; }
.next a { border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; text-decoration: none; color: var(--ink); font-weight: 600; font-size: 15px; }
.next small { display: block; color: var(--soft); font-weight: 400; }
.toc { padding: 34px 18px; position: sticky; top: 60px; height: calc(100vh - 60px); overflow: auto; font-size: 14px; }
.toc a { display: block; padding: 4px 0; color: var(--soft); text-decoration: none; line-height: 1.4; }
.toc a:hover { color: var(--blue); }
.ft { display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; border-top: 1px solid var(--line); padding: 20px 24px; color: var(--soft); font-size: 14px; }
@media (max-width: 1150px) { .shell { grid-template-columns: 230px minmax(0, 1fr); } .toc { display: none; } }
@media (max-width: 780px) { .shell { grid-template-columns: 1fr; } .nav { display: none; } .main { padding: 24px 18px 40px; } .hd nav a:not(.go) { display: none; } .next { grid-template-columns: 1fr; } }
.home { grid-column: span 2; }
@media (max-width: 1150px) { .home { grid-column: auto; } }