:root {
  --brand: #0d6e7a;
  --brand-2: #14b8a6;
  --brand-dark: #0a5660;
  --tcm: #b45309;
  --tcm-bg: #fff7ed;
  --west: #0369a1;
  --west-bg: #eff6ff;
  --ink: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --bg: #f8fafc;
  --card: #ffffff;
  --shadow: 0 1px 3px rgba(15, 23, 42, .08), 0 8px 24px rgba(15, 23, 42, .06);
  --radius: 14px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---- 顶栏 ---- */
.site-header {
  background: linear-gradient(120deg, var(--brand-dark), var(--brand) 55%, var(--brand-2));
  color: #fff;
  position: sticky; top: 0; z-index: 50;
  box-shadow: 0 2px 16px rgba(13, 110, 122, .25);
}
.nav {
  max-width: 1180px; margin: 0 auto; padding: 0 20px;
  display: flex; align-items: center; gap: 18px; height: 64px;
}
.brand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 700; font-size: 18px; }
.brand:hover { text-decoration: none; }
.logo {
  width: 34px; height: 34px; border-radius: 9px; background: rgba(255,255,255,.18);
  display: grid; place-items: center; font-size: 18px;
}
.brand small { display: block; font-size: 11px; font-weight: 400; opacity: .85; letter-spacing: .5px; }
.nav-links { display: flex; gap: 4px; margin-left: 8px; flex-wrap: wrap; }
.nav-links a {
  color: #e6fffb; padding: 8px 12px; border-radius: 9px; font-size: 14px; font-weight: 500;
}
.nav-links a:hover { background: rgba(255,255,255,.14); text-decoration: none; }
.nav-links a.active { background: rgba(255,255,255,.22); }
.nav-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.btn {
  display: inline-flex; align-items: center; gap: 6px; justify-content: center;
  padding: 9px 16px; border-radius: 10px; border: 1px solid transparent; cursor: pointer;
  font-size: 14px; font-weight: 600; transition: .15s; text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); }
.btn-outline { background: transparent; color: #fff; border-color: rgba(255,255,255,.5); }
.btn-outline:hover { background: rgba(255,255,255,.12); }
.btn-ghost { background: #fff; color: var(--brand); }
.btn-ghost:hover { background: #f0fdfa; }
.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn-danger { background: #dc2626; color: #fff; }
.btn-danger:hover { background: #b91c1c; }
.user-chip { color: #fff; font-size: 14px; display: flex; align-items: center; gap: 8px; }
.user-chip .avatar {
  width: 30px; height: 30px; border-radius: 50%; background: rgba(255,255,255,.25);
  display: grid; place-items: center; font-weight: 700;
}

/* ---- 容器 ---- */
.container { max-width: 1180px; margin: 0 auto; padding: 28px 20px 60px; }
.section-title { display: flex; align-items: baseline; gap: 12px; margin: 34px 0 16px; }
.section-title h2 { font-size: 22px; margin: 0; }
.section-title .more { margin-left: auto; font-size: 13px; color: var(--muted); }

/* ---- Hero ---- */
.hero {
  background: radial-gradient(1200px 400px at 80% -10%, rgba(20,184,166,.18), transparent),
              linear-gradient(120deg, #ecfeff, #f0fdfa);
  border-bottom: 1px solid var(--line);
}
.hero-inner { max-width: 1180px; margin: 0 auto; padding: 54px 20px 46px; }
.hero h1 { font-size: 34px; line-height: 1.3; margin: 0 0 14px; color: var(--brand-dark); }
.hero p { font-size: 17px; color: var(--muted); max-width: 720px; margin: 0 0 22px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.tag-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 22px; }
.tag { background: #fff; border: 1px solid var(--line); color: var(--muted); padding: 5px 12px; border-radius: 999px; font-size: 13px; }

/* ---- 统计条 ---- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 8px; }
.stat {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px 20px; box-shadow: var(--shadow); text-align: center;
}
.stat .num { font-size: 28px; font-weight: 800; color: var(--brand); }
.stat .lbl { font-size: 13px; color: var(--muted); margin-top: 4px; }

/* ---- 模块卡 ---- */
.module-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.module-card {
  border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); position: relative; overflow: hidden;
  border: 1px solid var(--line); background: var(--card);
}
.module-card.tcm { background: linear-gradient(160deg, var(--tcm-bg), #fff); border-top: 4px solid var(--tcm); }
.module-card.west { background: linear-gradient(160deg, var(--west-bg), #fff); border-top: 4px solid var(--west); }
.module-card .icon { font-size: 34px; }
.module-card h3 { margin: 10px 0 6px; font-size: 22px; }
.module-card.tcm h3 { color: var(--tcm); }
.module-card.west h3 { color: var(--west); }
.module-card p { color: var(--muted); margin: 0 0 16px; min-height: 48px; }

/* ---- 卡片网格 ---- */
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); }
.card h4 { margin: 0 0 8px; font-size: 16px; }
.card p { margin: 0; color: var(--muted); font-size: 14px; }

/* ---- 资讯条目 ---- */
.news-item {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px 18px; box-shadow: var(--shadow); display: flex; gap: 14px; transition: .15s;
}
.news-item:hover { border-color: var(--brand-2); transform: translateY(-1px); }
.news-main { flex: 1; min-width: 0; }
.news-title { font-weight: 700; font-size: 15.5px; color: var(--ink); display: block; }
.news-title:hover { color: var(--brand); }
.news-summary { color: var(--muted); font-size: 13.5px; margin: 6px 0 8px; }
.news-meta { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; font-size: 12px; color: var(--muted); }
.pill { padding: 2px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.pill.tcm { background: var(--tcm-bg); color: var(--tcm); }
.pill.west { background: var(--west-bg); color: var(--west); }
.pill.general { background: #f1f5f9; color: #475569; }
.pill.cat-regulation { background: #fef2f2; color: #b91c1c; }
.pill.cat-standard { background: #eff6ff; color: #1d4ed8; }
.pill.cat-case { background: #ecfdf5; color: #047857; }
.pill.cat-news { background: #fffbeb; color: #b45309; }
.source { font-weight: 600; }

/* ---- 资料卡 ---- */
.res-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 10px; }
.res-card .top { display: flex; gap: 12px; align-items: flex-start; }
.res-icon { width: 42px; height: 42px; border-radius: 10px; background: #f1f5f9; display: grid; place-items: center; font-size: 20px; flex: 0 0 auto; }
.res-card h4 { margin: 0; font-size: 15.5px; }
.res-card .desc { color: var(--muted); font-size: 13.5px; margin: 0; flex: 1; }
.res-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.res-tags span { font-size: 12px; background: #f1f5f9; color: #475569; padding: 2px 8px; border-radius: 6px; }
.res-foot { display: flex; align-items: center; gap: 10px; font-size: 12px; color: var(--muted); border-top: 1px dashed var(--line); padding-top: 10px; }

/* ---- 表单 ---- */
.form-wrap { max-width: 440px; margin: 20px auto; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
.form-wrap h2 { margin: 0 0 6px; }
.form-wrap .sub { color: var(--muted); font-size: 14px; margin: 0 0 20px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 11px 12px; border: 1px solid var(--line); border-radius: 10px; font-size: 14px;
  font-family: inherit; background: #fff; color: var(--ink);
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--brand-2); box-shadow: 0 0 0 3px rgba(20,184,166,.15); }
.field .hint { font-size: 12px; color: var(--muted); margin-top: 4px; }
.row { display: flex; gap: 12px; }
.row > * { flex: 1; }
.alert { padding: 10px 14px; border-radius: 10px; font-size: 14px; margin-bottom: 14px; }
.alert-error { background: #fef2f2; color: #b91c1c; border: 1px solid #fecaca; }
.alert-ok { background: #ecfdf5; color: #047857; border: 1px solid #a7f3d0; }

/* ---- 筛选条 ---- */
.filters { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-bottom: 18px; }
.filters select, .filters input { padding: 8px 12px; border: 1px solid var(--line); border-radius: 10px; font-size: 14px; background: #fff; }
.filters .grow { flex: 1; min-width: 200px; }

/* ---- 页脚 ---- */
.site-footer { background: #0f172a; color: #cbd5e1; margin-top: 40px; }
.footer-inner { max-width: 1180px; margin: 0 auto; padding: 34px 20px; display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 24px; }
.footer-inner h4 { color: #fff; margin: 0 0 10px; font-size: 15px; }
.footer-inner a { color: #94a3b8; font-size: 14px; display: block; margin-bottom: 6px; }
.footer-inner a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid #1e293b; padding: 14px 20px; text-align: center; font-size: 13px; color: #64748b; }

.empty { text-align: center; color: var(--muted); padding: 40px; background: var(--card); border: 1px dashed var(--line); border-radius: var(--radius); }

/* ---- 响应式 ---- */
@media (max-width: 880px) {
  .module-grid, .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .nav-links a { padding: 8px 8px; font-size: 13px; }
  .hero h1 { font-size: 27px; }
}