:root {
  color-scheme: dark;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Noto Sans TC", sans-serif;
  background: #06080c;
  color: #f7f9fc;
  --blue: #1687ff;
  --muted: #aab3c2;
  --panel: rgba(19, 23, 31, 0.9);
  --line: rgba(255, 255, 255, 0.11);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 15% 0%, rgba(22, 135, 255, 0.22), transparent 38rem),
    linear-gradient(180deg, #0d1118 0%, #05070a 58%);
  font-size: 16px;
  line-height: 1.72;
}

a { color: #63adff; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px max(20px, calc((100vw - 960px) / 2));
  background: rgba(6, 8, 12, 0.82);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(20px);
}

.brand { display: inline-flex; align-items: center; gap: 11px; color: white; text-decoration: none; font-weight: 750; }
.brand img { width: 42px; height: 42px; border-radius: 12px; }
.site-nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 16px; }
.site-nav a { color: var(--muted); text-decoration: none; font-size: 14px; }
.site-nav a:hover { color: white; }

main {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 64px 0 80px;
}

.hero, .legal-card {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.35);
  border-radius: 30px;
}

.hero { padding: clamp(28px, 7vw, 72px); text-align: center; overflow: hidden; }
.hero-icon { width: 112px; height: 112px; border-radius: 28px; box-shadow: 0 20px 50px rgba(0,0,0,.42); }
.eyebrow { color: #63adff; font-weight: 760; letter-spacing: .13em; font-size: 13px; text-transform: uppercase; }
h1 { margin: 16px 0 12px; font-size: clamp(38px, 8vw, 68px); line-height: 1.06; letter-spacing: -.04em; }
.hero p { max-width: 640px; margin: 0 auto; color: var(--muted); font-size: clamp(17px, 2vw, 20px); }
.actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 30px; }
.button { display: inline-flex; min-height: 50px; align-items: center; justify-content: center; padding: 0 22px; border-radius: 16px; color: white; background: var(--blue); font-weight: 750; text-decoration: none; }
.button.secondary { background: #252a34; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 18px; }
.feature { padding: 22px; border-radius: 22px; border: 1px solid var(--line); background: rgba(255,255,255,.045); }
.feature strong { display: block; margin-bottom: 6px; }
.feature span { color: var(--muted); font-size: 14px; }

.legal-card { padding: clamp(24px, 6vw, 56px); }
.legal-card h1 { font-size: clamp(34px, 6vw, 52px); }
.legal-card h2 { margin: 38px 0 8px; font-size: 22px; }
.legal-card p, .legal-card li { color: #c6ceda; }
.legal-card li + li { margin-top: 7px; }
.updated { color: var(--muted); font-size: 14px; }
.notice { margin: 24px 0; padding: 18px 20px; border: 1px solid rgba(22,135,255,.35); border-radius: 18px; background: rgba(22,135,255,.1); }
.research-banner { margin: 24px 0; padding: 18px 20px; border: 1px solid rgba(255, 159, 47, .28); border-radius: 18px; background: linear-gradient(145deg, rgba(255, 159, 47, .1), rgba(22, 135, 255, .07)); }
.research-banner strong { color: #ffbd66; }
.research-banner p { margin: 5px 0 0; }
.legal-facts { margin: 24px 0; overflow: hidden; border: 1px solid var(--line); border-radius: 18px; background: rgba(255,255,255,.035); }
.legal-facts div { padding: 13px 16px; display: grid; grid-template-columns: minmax(110px, .35fr) minmax(0, 1fr); gap: 16px; border-bottom: 1px solid var(--line); }
.legal-facts div:last-child { border-bottom: 0; }
.legal-facts strong { color: #f7f9fc; }
.legal-facts span { color: #c6ceda; }
.language-summary { margin-top: 34px; }
.language-summary p { padding: 13px 15px; border-left: 3px solid rgba(99, 173, 255, .45); background: rgba(255,255,255,.025); }
.translation-note { color: #9ca7b7 !important; font-size: 14px; }

footer { width: min(920px, calc(100% - 32px)); margin: 0 auto; padding: 0 0 40px; color: #7f8999; font-size: 13px; text-align: center; }

@media (max-width: 680px) {
  .site-header { align-items: flex-start; }
  .site-nav { gap: 8px 13px; }
  .feature-grid { grid-template-columns: 1fr; }
  main { padding-top: 32px; }
  .legal-facts div { grid-template-columns: 1fr; gap: 3px; }
}