:root {
  color-scheme: light;
  --navy: #172554;
  --blue: #2563eb;
  --ink: #172033;
  --muted: #64748b;
  --line: #dfe5ee;
  --surface: #ffffff;
  --page: #f5f7fb;
  --coral: #d94b3d;
  font-family: "PingFang SC", "SF Pro Text", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--page); color: var(--ink); font-size: 16px; line-height: 1.6; }
a { color: inherit; text-decoration: none; }
a:focus-visible { outline: 3px solid #93c5fd; outline-offset: 3px; }
.hub-header { min-height: 64px; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.96); }
.hub-brand, .hub-main, .hub-footer { width: min(1040px, calc(100% - 32px)); margin-inline: auto; }
.hub-brand { display: flex; min-height: 64px; align-items: center; gap: 12px; font-weight: 750; }
.hub-brand span { display: grid; width: 36px; height: 36px; place-items: center; border-radius: 10px; background: var(--navy); color: #fff; font-size: 13px; letter-spacing: .04em; }
.hub-main { min-height: calc(100vh - 136px); padding: 52px 0 72px; }
.hub-intro { max-width: 700px; margin-bottom: 48px; }
.hub-intro.compact { margin-bottom: 40px; }
.hub-intro > p:first-child { margin: 0 0 8px; color: var(--blue); font-size: 13px; font-weight: 800; letter-spacing: .12em; }
h1 { margin: 0; font-size: clamp(34px, 6vw, 56px); line-height: 1.15; letter-spacing: -.035em; }
.hub-summary { margin: 14px 0 0; color: var(--muted); font-size: 18px; }
.section-title { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 16px; }
.section-title h2 { margin: 0; font-size: 20px; }
.section-title span { color: var(--muted); font-size: 14px; }
.card-grid { display: grid; gap: 14px; }
.doc-card { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 16px; align-items: center; min-height: 96px; padding: 20px; border: 1px solid var(--line); border-radius: 16px; background: var(--surface); box-shadow: 0 10px 30px rgba(23, 37, 84, .05); transition: border-color .16s ease, transform .16s ease, box-shadow .16s ease; }
.doc-card:hover { transform: translateY(-2px); border-color: #a8b5c9; box-shadow: 0 14px 34px rgba(23, 37, 84, .09); }
.card-mark { display: grid; width: 52px; height: 52px; place-items: center; border-radius: 14px; background: #e8efff; color: var(--navy); font-size: 18px; font-weight: 850; }
.card-mark.coral { background: #fff0ed; color: var(--coral); font-size: 13px; letter-spacing: .06em; }
.card-copy { min-width: 0; }
.card-copy strong, .card-copy small { display: block; }
.card-copy strong { line-height: 1.45; }
.card-copy small { margin-top: 4px; color: var(--muted); font-size: 14px; }
.card-arrow { color: var(--blue); font-size: 24px; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 9px; margin-bottom: 28px; color: var(--muted); font-size: 14px; }
.breadcrumbs a { color: var(--blue); }
.hub-footer { min-height: 72px; padding: 24px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.hub-footer a { color: var(--blue); }
.empty-state { padding: 32px; border: 1px dashed #b8c3d4; border-radius: 16px; background: rgba(255,255,255,.7); }
.empty-state h2 { margin: 0; font-size: 20px; }
.empty-state p { margin: 8px 0 0; color: var(--muted); }

@media (max-width: 600px) {
  .hub-main { padding-top: 36px; }
  .hub-intro { margin-bottom: 36px; }
  .hub-summary { font-size: 16px; }
  .doc-card { min-height: 88px; padding: 16px; gap: 12px; }
  .card-mark { width: 46px; height: 46px; border-radius: 12px; }
  .card-copy small { margin-top: 2px; }
}

@media print {
  body { background: #fff; }
  .hub-header, .hub-footer { display: none; }
  .hub-main { width: 100%; padding: 0; }
  .doc-card { box-shadow: none; }
}