:root {
  --ink: #17213f;
  --muted: #606a82;
  --soft: #f8f9ff;
  --line: #e3eaf3;
  --white: #fff;
  --blue: #2449ff;
  --blue-dark: #1538e0;
  --cyan: #72d8ff;
  --warn: #b86908;
  --wrap: 1080px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body {
  color: var(--ink);
  background: var(--soft);
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", system-ui, sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
.wrap { width: min(calc(100% - 40px), var(--wrap)); margin: 0 auto; }
.skip-link { position: fixed; top: -60px; left: 16px; z-index: 100; padding: 9px 14px; border-radius: 8px; color: #fff; background: var(--blue-dark); }
.skip-link:focus { top: 12px; }

.nav {
  position: sticky; top: 0; z-index: 50;
  border-bottom: 1px solid rgba(227, 234, 243, .9);
  background: rgba(255, 255, 255, .9);
  backdrop-filter: blur(18px);
}
.nav-inner { height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 900; }
.brand img { display: block; width: 34px; height: 34px; flex: 0 0 auto; }
.back-home { color: #526078; font-size: 14px; font-weight: 700; }
.back-home:hover { color: var(--blue-dark); }

.legal-hero {
  color: var(--ink);
  background: linear-gradient(115deg, #f0f2ff, #f3edff);
  border-bottom: 1px solid var(--line);
}
.legal-hero .wrap { padding-top: 70px; padding-bottom: 72px; }
.eyebrow { color: #7649ed; font-size: 13px; font-weight: 600; letter-spacing: .12em; }
.legal-hero h1 { margin-top: 10px; color: var(--blue); font-size: clamp(36px, 6vw, 56px); line-height: 1.16; letter-spacing: -.04em; }
.legal-hero p { max-width: 720px; margin-top: 16px; color: var(--muted); font-size: 16px; }
.meta { display: flex; flex-wrap: wrap; gap: 10px 18px; margin-top: 24px; color: #72889d; font-size: 13px; }

.legal-layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 38px; align-items: start; padding: 54px 0 80px; }
.toc { position: sticky; top: 94px; padding: 20px; border: 1px solid var(--line); border-radius: 16px; background: #fff; }
.toc h2 { margin-bottom: 10px; color: #33445c; font-size: 14px; }
.toc a { display: block; padding: 6px 0; color: var(--muted); font-size: 13px; }
.toc a:hover { color: var(--blue-dark); }

.legal-card { padding: clamp(28px, 5vw, 56px); border: 1px solid var(--line); border-radius: 16px; background: #fff; box-shadow: 0 12px 32px rgba(69, 121, 175, .04); }
.legal-card section + section { margin-top: 40px; padding-top: 40px; border-top: 1px solid var(--line); }
.legal-card h2 { font-size: 24px; line-height: 1.35; }
.legal-card h3 { margin-top: 24px; font-size: 17px; }
.legal-card p { margin-top: 13px; color: #425068; }
.legal-card ul, .legal-card ol { margin: 13px 0 0 1.35em; color: #425068; }
.legal-card li + li { margin-top: 8px; }
.legal-card a { color: var(--blue-dark); text-decoration: underline; text-underline-offset: 3px; }
.legal-card strong { color: #23344d; }
.notice { margin-top: 18px; padding: 18px 20px; border: 1px solid #cee0f7; border-radius: 14px; color: #294b74; background: #f0f7ff; }
.warning { border-color: #ecd4ad; color: #724c1c; background: #fff8ec; }
.contact-box { margin-top: 18px; padding: 20px; border-radius: 14px; background: var(--soft); }
.contact-box p { margin-top: 5px; }
.template { margin-top: 16px; padding: 18px 20px; overflow-x: auto; border: 1px solid #e1eaf3; border-radius: 10px; color: #526d86; background: #f3f7fc; font: 13px/1.8 Consolas, "Microsoft YaHei", monospace; white-space: pre-wrap; }

footer { padding: 30px 0; color: #68718b; background: #f8f9ff; border-top: 1px solid var(--line); font-size: 12px; }
.footer-inner { display: flex; justify-content: space-between; gap: 18px; }
.footer-inner a:hover { color: var(--blue-dark); }

:focus-visible { outline: 3px solid #76a7ee; outline-offset: 4px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

@media (max-width: 820px) {
  .legal-layout { grid-template-columns: 1fr; gap: 22px; padding-top: 30px; }
  .toc { position: static; }
  .toc nav { columns: 2; column-gap: 24px; }
}
@media (max-width: 560px) {
  .wrap { width: min(calc(100% - 28px), var(--wrap)); }
  .nav-inner { height: 62px; }
  .legal-hero .wrap { padding-top: 48px; padding-bottom: 52px; }
  .legal-card { padding: 24px 20px; border-radius: 16px; }
  .legal-card h2 { font-size: 21px; }
  .toc nav { columns: 1; }
  .footer-inner { flex-direction: column; }
}
@media print {
  body { background: #fff; }
  .nav, .toc, footer { display: none; }
  .legal-hero { color: #000; background: #fff; }
  .legal-hero .wrap { padding: 20px 0; }
  .legal-hero p, .meta { color: #444; }
  .legal-layout { display: block; padding: 0; }
  .legal-card { padding: 0; border: 0; box-shadow: none; }
}