:root {
  color-scheme: light;
  --ink: #14243a;
  --muted: #5f7184;
  --line: #dbe6e8;
  --paper: #f5f9f8;
  --white: #fff;
  --brand: #2f777b;
  --brand-dark: #215b60;
  --soft: #e6f2f0;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; line-height: 1.65; }
a { color: inherit; text-decoration: none; }
.site-header { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; justify-content: space-between; min-height: 72px; padding: 12px clamp(20px, 5vw, 72px); border-bottom: 1px solid rgba(219, 230, 232, .85); background: rgba(245, 249, 248, .92); backdrop-filter: blur(18px); }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 700; }
.brand-mark { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 13px; color: var(--brand-dark); background: var(--soft); font-size: 14px; }
nav { display: flex; gap: 28px; color: var(--muted); font-size: 14px; }
nav a:hover { color: var(--brand); }
main { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.hero { display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(44px, 8vw, 110px); align-items: center; min-height: 680px; padding: 96px 0 80px; }
.eyebrow { margin: 0 0 12px; color: var(--brand); font-size: 13px; font-weight: 750; letter-spacing: .12em; text-transform: uppercase; }
h1 { margin: 0; font-size: clamp(46px, 6vw, 76px); line-height: 1.08; letter-spacing: -.045em; }
.lead { max-width: 650px; margin: 28px 0 0; color: var(--muted); font-size: clamp(17px, 2vw, 21px); }
.hero-actions { display: flex; gap: 12px; margin-top: 34px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 22px; border-radius: 14px; font-weight: 700; }
.primary { color: var(--white); background: var(--brand); }
.primary:hover { background: var(--brand-dark); }
.secondary { border: 1px solid var(--line); background: var(--white); }
.hero-panel { padding: 18px; border: 1px solid var(--line); border-radius: 28px; background: var(--white); box-shadow: 0 24px 70px rgba(20, 36, 58, .08); }
.metric { padding: 28px; border-radius: 20px; background: var(--paper); }
.metric + .metric { margin-top: 12px; }
.metric strong, .metric span { display: block; }
.metric strong { font-size: 23px; }
.metric span { margin-top: 4px; color: var(--muted); }
.section { padding: 96px 0; border-top: 1px solid var(--line); }
h2 { max-width: 760px; margin: 0; font-size: clamp(32px, 4vw, 48px); line-height: 1.2; letter-spacing: -.03em; }
.card-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 44px; }
.card { min-height: 238px; padding: 26px; border: 1px solid var(--line); border-radius: 20px; background: var(--white); }
.card > span { color: var(--brand); font-size: 13px; font-weight: 800; }
.card h3 { margin: 48px 0 8px; font-size: 20px; }
.card p { margin: 0; color: var(--muted); }
.split { display: grid; grid-template-columns: .8fr 1.2fr; gap: 72px; }
.notice { padding: 32px; border-radius: 24px; color: #294653; background: var(--soft); }
.notice p { margin: 0; }
.notice p + p { margin-top: 16px; }
.policy-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 40px; }
.policy-links a { padding: 24px; border: 1px solid var(--line); border-radius: 18px; background: var(--white); }
.policy-links strong, .policy-links span { display: block; }
.policy-links span { margin-top: 6px; color: var(--muted); font-size: 14px; }
.complaint { margin: 32px 0 0; padding: 20px 24px; border-left: 4px solid var(--brand); color: var(--muted); background: var(--white); }
footer { display: flex; justify-content: space-between; gap: 24px; padding: 34px clamp(20px, 5vw, 72px); border-top: 1px solid var(--line); color: var(--muted); background: var(--white); font-size: 13px; }
footer strong, footer span { display: block; }
.filing { text-align: right; }
.filing a { color: var(--brand-dark); }

.legal { width: min(860px, calc(100% - 40px)); margin: 0 auto; padding: 72px 0 100px; }
.legal h1 { font-size: clamp(36px, 5vw, 54px); }
.legal .updated { margin: 10px 0 44px; color: var(--muted); }
.legal section { margin-top: 36px; }
.legal h2 { font-size: 23px; }
.legal p, .legal li { color: #405467; }
.back { display: inline-block; margin-bottom: 32px; color: var(--brand); font-weight: 700; }

@media (max-width: 860px) {
  nav { display: none; }
  .hero, .split { grid-template-columns: 1fr; }
  .hero { min-height: auto; padding-top: 68px; }
  .card-grid, .policy-links { grid-template-columns: 1fr 1fr; }
  footer { flex-direction: column; }
  .filing { text-align: left; }
}
@media (max-width: 560px) {
  main { width: min(100% - 28px, 1180px); }
  .site-header { min-height: 64px; padding: 10px 16px; }
  .brand-mark { width: 38px; height: 38px; }
  .hero { padding: 52px 0 64px; }
  .hero-actions { flex-direction: column; }
  .card-grid, .policy-links { grid-template-columns: 1fr; }
  .section { padding: 68px 0; }
}