:root {
  --bg: #f6f7fb;
  --card: #ffffff;
  --text: #172033;
  --muted: #5b667a;
  --line: #e6e8ef;
  --primary: #2563eb;
  --primary-soft: #eaf0ff;
  --radius: 18px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: radial-gradient(circle at top left, #eef4ff, transparent 36%), var(--bg);
  color: var(--text);
  line-height: 1.65;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { width: min(1040px, calc(100% - 32px)); margin: 0 auto; }
.header { padding: 28px 0 12px; }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 800; font-size: 22px; }
.logo { width: 44px; height: 44px; border-radius: 14px; display: grid; place-items: center; background: linear-gradient(135deg, #60a5fa, #2563eb); color: white; box-shadow: 0 10px 30px rgba(37,99,235,.25); }
.navlinks { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.navlinks a, .lang button { padding: 9px 12px; border-radius: 999px; background: rgba(255,255,255,.76); border: 1px solid var(--line); color: var(--text); }
.lang { display: flex; gap: 6px; }
.lang button { cursor: pointer; font: inherit; }
.lang button.active { background: var(--primary); color: white; border-color: var(--primary); }
.hero { padding: 44px 0 24px; }
.hero-card { background: rgba(255,255,255,.82); border: 1px solid var(--line); border-radius: 28px; padding: clamp(24px, 5vw, 54px); box-shadow: 0 20px 60px rgba(28, 44, 84, .10); }
.eyebrow { display: inline-flex; padding: 6px 10px; background: var(--primary-soft); color: var(--primary); border-radius: 999px; font-size: 13px; font-weight: 700; }
h1 { margin: 18px 0 10px; font-size: clamp(34px, 7vw, 62px); line-height: 1.08; letter-spacing: -.04em; }
h2 { margin: 34px 0 12px; font-size: 28px; letter-spacing: -.02em; }
h3 { margin: 24px 0 8px; font-size: 20px; }
.lead { font-size: 19px; color: var(--muted); max-width: 760px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 22px 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: 0 10px 30px rgba(28,44,84,.06); }
.card strong { display: block; margin-bottom: 6px; }
.section { padding: 18px 0 42px; }
ul { padding-left: 22px; }
.notice { background: #fff8e6; border: 1px solid #ffe1a6; border-radius: var(--radius); padding: 16px 18px; color: #59410d; }
.table { width: 100%; border-collapse: collapse; overflow: hidden; border-radius: var(--radius); background: white; }
.table th, .table td { border: 1px solid var(--line); padding: 12px; vertical-align: top; text-align: left; }
.table th { background: #f0f4ff; }
.footer { border-top: 1px solid var(--line); padding: 28px 0; color: var(--muted); font-size: 14px; }
.lang-block { display: none; }
html[data-lang="zh"] .lang-zh { display: block; }
html[data-lang="en"] .lang-en { display: block; }
@media (max-width: 800px) { .grid { grid-template-columns: 1fr; } .nav { align-items: flex-start; } }