:root {
  --ink: #102033;
  --muted: #5d6b79;
  --navy: #0f2f4d;
  --blue: #176fa6;
  --blue-soft: #eaf5fb;
  --green: #0a7a5a;
  --line: #d9e2e8;
  --paper: #ffffff;
  --wash: #f5f8fa;
  --shadow: 0 14px 40px rgba(15, 47, 77, 0.09);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei", "PingFang SC", system-ui, -apple-system, sans-serif;
  line-height: 1.75;
}
a { color: var(--blue); text-underline-offset: 3px; }
img { max-width: 100%; height: auto; }
.skip-link { position: absolute; left: -9999px; }
.skip-link:focus { left: 16px; top: 12px; z-index: 20; background: #fff; padding: 8px 12px; }
.container { width: min(1120px, calc(100% - 36px)); margin: 0 auto; }
.site-header { background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10; }
.header-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--ink); text-decoration: none; font-weight: 800; font-size: 20px; white-space: nowrap; }
.brand img { width: 42px; height: 42px; }
.site-nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 18px; }
.site-nav a { color: #304458; text-decoration: none; font-size: 15px; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--blue); }
.hero { padding: 86px 0 74px; color: #fff; background: radial-gradient(circle at 80% 15%, #267fb1 0, transparent 34%), linear-gradient(135deg, #0d263e, #124d70); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(260px, .55fr); gap: 48px; align-items: center; }
.eyebrow { margin: 0 0 10px; color: #b9e4f6; font-size: 14px; font-weight: 700; letter-spacing: .08em; }
h1 { margin: 0 0 20px; font-size: clamp(34px, 5vw, 58px); line-height: 1.18; letter-spacing: -.02em; }
.hero-lead { max-width: 760px; font-size: 19px; color: #e9f5fa; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 10px 20px; border-radius: 8px; text-decoration: none; font-weight: 700; }
.button-primary { background: #fff; color: var(--navy); }
.button-secondary { color: #fff; border: 1px solid rgba(255,255,255,.55); }
.hero-card { background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.22); border-radius: 18px; padding: 26px; backdrop-filter: blur(6px); }
.hero-card p { margin: 8px 0; color: #eef8fb; }
.section { padding: 72px 0; }
.section-alt { background: var(--wash); }
.section-head { max-width: 760px; margin-bottom: 34px; }
.section h2 { margin: 0 0 12px; font-size: clamp(26px, 3vw, 38px); line-height: 1.3; }
.section h3 { margin-top: 0; line-height: 1.4; }
.lead { font-size: 18px; color: var(--muted); }
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 24px; box-shadow: var(--shadow); }
.card p:last-child { margin-bottom: 0; }
.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; color: var(--green); background: #e4f6ef; font-size: 13px; font-weight: 700; }
.link-card { color: inherit; text-decoration: none; transition: transform .15s ease, border-color .15s ease; }
.link-card:hover { transform: translateY(-2px); border-color: #8bc4df; }
.content-grid { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 42px; align-items: start; }
.prose { min-width: 0; }
.prose h2 { margin-top: 48px; }
.prose h3 { margin-top: 30px; }
.prose li { margin-bottom: 8px; }
.sidebar { position: sticky; top: 96px; }
.info-list { margin: 0; padding: 0; list-style: none; }
.info-list li { padding: 10px 0; border-bottom: 1px solid var(--line); }
.info-list li:last-child { border-bottom: 0; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; }
table { width: 100%; border-collapse: collapse; background: #fff; }
th, td { padding: 14px 16px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
th { background: var(--blue-soft); color: var(--navy); white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
.steps { counter-reset: step; display: grid; gap: 18px; }
.step { position: relative; padding: 24px 24px 24px 74px; border: 1px solid var(--line); border-radius: 14px; background: #fff; }
.step::before { counter-increment: step; content: counter(step); position: absolute; left: 22px; top: 24px; width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; background: var(--navy); color: #fff; font-weight: 800; }
.step h3 { margin: 0 0 6px; }
.step p { margin: 0; }
.faq { display: grid; gap: 14px; }
.faq details { border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; background: #fff; }
.faq summary { cursor: pointer; font-weight: 800; }
.faq details p { margin-bottom: 0; color: #334a5f; }
.evidence { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
figure { margin: 0; border: 1px solid var(--line); border-radius: 14px; overflow: hidden; background: #fff; }
figure img { display: block; width: 100%; }
figcaption { padding: 12px 15px; color: var(--muted); font-size: 14px; }
.qr { width: min(320px, 100%); border-radius: 16px; border: 1px solid var(--line); }
.notice { padding: 18px 20px; border-left: 4px solid var(--blue); background: var(--blue-soft); border-radius: 8px; }
.page-hero { padding: 58px 0 46px; background: linear-gradient(135deg, #f1f7fb, #fff); border-bottom: 1px solid var(--line); }
.page-hero h1 { color: var(--navy); font-size: clamp(32px, 4vw, 48px); }
.breadcrumbs { margin-bottom: 16px; color: var(--muted); font-size: 14px; }
.site-footer { padding: 42px 0; background: #0c2237; color: #dbe8ef; }
.footer-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 30px; }
.site-footer a { color: #d5f0fc; }
.site-footer p { margin: 6px 0; }
.footer-note { color: #9db4c4; font-size: 13px; }

@media (max-width: 820px) {
  .header-inner { align-items: flex-start; padding: 14px 0; flex-direction: column; gap: 8px; }
  .site-header { position: static; }
  .site-nav { justify-content: flex-start; gap: 10px 16px; }
  .hero { padding: 58px 0; }
  .hero-grid, .content-grid, .footer-grid { grid-template-columns: 1fr; }
  .hero-card, .sidebar { position: static; }
  .cards { grid-template-columns: 1fr; }
  .evidence { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .container { width: min(100% - 24px, 1120px); }
  .site-nav a { font-size: 14px; }
  .section { padding: 50px 0; }
  .actions { flex-direction: column; }
  .button { width: 100%; }
  th, td { padding: 11px 12px; }
}