:root {
  color-scheme: light dark;
  --ink: #181b2a;
  --muted: #687287;
  --line: rgba(68, 52, 103, .12);
  --surface: rgba(255, 255, 255, .88);
  --accent: #8429ba;
  --accent-deep: #5f1db5;
  --teal: #12a99a;
  font-family: Inter, "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { min-height: 100%; background: #eef1ff; }
body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 88% 6%, rgba(132, 41, 186, .14), transparent 28rem),
    radial-gradient(circle at 4% 28%, rgba(18, 169, 154, .08), transparent 23rem),
    linear-gradient(160deg, #fbfcff 0%, #f1f3ff 58%, #edf0ff 100%);
}

a { color: var(--accent-deep); text-underline-offset: .18em; }
a:hover, a:focus-visible { color: var(--accent); }
.legal-shell { width: min(100% - 2rem, 52rem); margin: 0 auto; padding: 2rem 0 4rem; }
.legal-header { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1.25rem; }
.legal-header img { display: block; width: 9.2rem; }
.legal-back { display: inline-flex; min-height: 2.65rem; align-items: center; padding: 0 .95rem; border: 1px solid var(--line); border-radius: .85rem; color: #5c486e; background: rgba(255,255,255,.72); font-size: .88rem; font-weight: 750; text-decoration: none; }
.legal-card { overflow: hidden; border: 1px solid var(--line); border-radius: 1.55rem; background: var(--surface); box-shadow: 0 1.4rem 4rem rgba(39, 33, 74, .1); backdrop-filter: blur(18px); }
.legal-hero { padding: clamp(1.5rem, 5vw, 2.5rem); color: #fff; background: radial-gradient(circle at 92% 0, rgba(255,255,255,.18), transparent 28%), linear-gradient(135deg, #161b38, #31216c 62%, #7b27d4 125%); }
.legal-kicker { margin: 0 0 .55rem; color: #d9b8f1; font-size: .74rem; font-weight: 820; letter-spacing: .12em; }
.legal-hero h1 { margin: 0; font-size: clamp(2rem, 8vw, 3.25rem); line-height: 1.08; letter-spacing: -.04em; }
.legal-hero p { max-width: 38rem; margin: .85rem 0 0; color: #dce4f5; font-size: .95rem; line-height: 1.7; }
.legal-content { padding: clamp(1.35rem, 5vw, 2.5rem); }
.legal-summary { margin: 0 0 1.65rem; padding: 1rem 1.05rem; border: 1px solid rgba(18,169,154,.18); border-radius: 1rem; color: #355c5a; background: rgba(18,169,154,.07); font-weight: 680; line-height: 1.7; }
.legal-content section + section { margin-top: 2rem; padding-top: 2rem; border-top: 1px solid var(--line); }
.legal-content h2 { margin: 0 0 .75rem; font-size: 1.16rem; letter-spacing: -.015em; }
.legal-content h3 { margin: 1.2rem 0 .5rem; font-size: .96rem; }
.legal-content p, .legal-content li { color: var(--muted); font-size: .92rem; line-height: 1.8; }
.legal-content p { margin: .65rem 0; }
.legal-content ul, .legal-content ol { margin: .65rem 0; padding-left: 1.35rem; }
.legal-content strong { color: var(--ink); }
.legal-meta { display: flex; flex-wrap: wrap; gap: .45rem 1rem; margin-top: 1.5rem; color: #7a8498; font-size: .78rem; }
.legal-footer { margin-top: 1rem; color: #7b8496; font-size: .76rem; line-height: 1.65; text-align: center; }

@media (max-width: 540px) {
  .legal-shell { width: min(100% - 1rem, 52rem); padding-top: .75rem; }
  .legal-header { padding: .35rem .25rem; }
  .legal-header img { width: 7.8rem; }
  .legal-back { min-height: 2.4rem; font-size: .8rem; }
  .legal-card { border-radius: 1.2rem; }
}

@media (prefers-color-scheme: dark) {
  :root { --ink: #f1f3fb; --muted: #b0bacb; --line: rgba(211, 220, 240, .12); --surface: rgba(15, 22, 38, .9); }
  html { background: #090e19; }
  body { background: radial-gradient(circle at 88% 6%, rgba(132,41,186,.22), transparent 28rem), linear-gradient(160deg, #0d1423, #0b1020 62%, #11152a); }
  .legal-header img { filter: brightness(0) invert(1); }
  .legal-back { color: #d5c3e6; background: rgba(24,31,51,.76); }
  .legal-summary { color: #a9d9d2; background: rgba(18,169,154,.1); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; }
}