:root {
  color-scheme: light;
  --bg: #f6f8fb;
  --panel: #ffffff;
  --text: #152033;
  --muted: #607086;
  --line: #dbe3ee;
  --primary: #0f766e;
  --primary-dark: #115e59;
  --accent: #d97706;
  --blue: #2563eb;
  --shadow: 0 18px 45px rgba(21, 32, 51, .08);
}
* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; background: var(--bg); color: var(--text); line-height: 1.75; }
a { color: inherit; text-decoration: none; }
.site-header { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 16px clamp(18px, 4vw, 56px); border-bottom: 1px solid rgba(219, 227, 238, .8); background: rgba(246, 248, 251, .94); backdrop-filter: blur(18px); }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; color: var(--text); white-space: nowrap; }
.brand-mark { width: 30px; height: 30px; border-radius: 8px; background: conic-gradient(from 180deg, var(--primary), var(--blue), var(--accent), var(--primary)); box-shadow: 0 8px 20px rgba(15, 118, 110, .25); }
.top-nav { display: flex; flex-wrap: wrap; gap: 18px; color: var(--muted); font-size: 15px; }
.top-nav a:hover { color: var(--primary); }
main { min-height: 70vh; }
.home-hero { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(320px, .9fr); gap: 44px; align-items: center; padding: clamp(48px, 7vw, 92px) clamp(18px, 4vw, 56px) 36px; max-width: 1180px; margin: 0 auto; }
.hero-copy h1, .article-hero h1, .list-hero h1 { margin: 10px 0 16px; line-height: 1.12; font-size: clamp(34px, 5vw, 64px); }
.hero-copy p, .lead, .list-hero p { max-width: 760px; color: var(--muted); font-size: 18px; }
.eyebrow { margin: 0; color: var(--primary); font-weight: 800; letter-spacing: 0; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 10px 18px; border: 1px solid var(--line); border-radius: 8px; font-weight: 700; }
.button.primary { border-color: var(--primary); background: var(--primary); color: #fff; }
.button.secondary { background: #fff; color: var(--text); }
.hero-visual { position: relative; min-height: 420px; border-radius: 8px; overflow: hidden; background: linear-gradient(135deg, rgba(15,118,110,.92), rgba(37,99,235,.82)); box-shadow: var(--shadow); }
.radar { position: absolute; left: 50%; top: 50%; width: 220px; height: 220px; transform: translate(-50%, -50%); border: 2px solid rgba(255,255,255,.65); border-radius: 50%; }
.radar::before, .radar::after { content: ""; position: absolute; inset: 34px; border: 1px solid rgba(255,255,255,.42); border-radius: 50%; }
.radar::after { inset: 72px; }
.route { position: absolute; height: 3px; background: rgba(255,255,255,.72); transform-origin: left center; }
.r1 { width: 220px; left: 120px; top: 120px; transform: rotate(22deg); }
.r2 { width: 260px; left: 250px; top: 310px; transform: rotate(-18deg); }
.r3 { width: 190px; left: 210px; bottom: 110px; transform: rotate(35deg); }
.node { position: absolute; display: grid; place-items: center; width: 52px; height: 52px; border-radius: 50%; background: #fff; color: var(--primary-dark); font-weight: 900; box-shadow: 0 12px 28px rgba(0,0,0,.2); }
.n1 { left: 70px; top: 86px; } .n2 { right: 88px; top: 140px; } .n3 { left: 150px; bottom: 86px; } .n4 { right: 130px; bottom: 120px; }
.section, .article, .list-hero { max-width: 1080px; margin: 0 auto; padding: 34px clamp(18px, 4vw, 56px); }
.article { max-width: 920px; }
.article-hero, .list-hero { padding-top: 56px; }
.section-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.section h2, .article h2 { margin: 34px 0 12px; font-size: 28px; line-height: 1.25; }
.post-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.post-card { display: block; min-height: 182px; padding: 20px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); box-shadow: 0 8px 24px rgba(21, 32, 51, .04); }
.post-card:hover { border-color: rgba(15, 118, 110, .45); transform: translateY(-2px); }
.post-card h3 { margin: 8px 0; font-size: 22px; line-height: 1.25; }
.post-card p { margin: 0; color: var(--muted); font-size: 15px; }
.tag { display: inline-block; color: var(--accent); font-size: 13px; font-weight: 800; }
.quick-card { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 28px 0; }
.quick-card div { padding: 18px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.quick-card span { display: block; color: var(--muted); font-size: 13px; }
.quick-card strong { display: block; margin-top: 6px; overflow-wrap: anywhere; }
.notice { margin: 30px 0; padding: 18px; border-left: 4px solid var(--primary); border-radius: 8px; background: #fff; overflow-wrap: anywhere; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
table { width: 100%; border-collapse: collapse; min-width: 840px; }
th, td { padding: 13px 14px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: #eef4f8; font-size: 14px; }
.site-footer { margin-top: 46px; padding: 32px clamp(18px, 4vw, 56px); border-top: 1px solid var(--line); color: var(--muted); text-align: center; }
.site-footer p { margin: 6px 0; }
@media (max-width: 860px) {
  .site-header { align-items: flex-start; flex-direction: column; }
  .home-hero { grid-template-columns: 1fr; }
  .hero-visual { min-height: 300px; }
  .post-grid, .quick-card { grid-template-columns: 1fr; }
  .hero-copy h1, .article-hero h1, .list-hero h1 { font-size: 34px; }
}