/* 隐私与说明页 — 共用样式，无内联样式（站点 CSP 为 style-src 'self'） */
:root {
  --ink: #0b1220;
  --muted: #5b6c86;
  --line: rgba(15, 35, 80, 0.10);
  --ac: #4f46e5;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; background: #f5f7ff; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font: 16px/1.75 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, "Noto Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  background:
    radial-gradient(60% 50% at 12% 0%, rgba(99, 102, 241, 0.20), transparent 62%),
    radial-gradient(52% 46% at 92% 4%, rgba(34, 211, 238, 0.16), transparent 62%),
    #f5f7ff;
}

a { color: #1d4ed8; }

.wrap { max-width: 860px; margin: 0 auto; padding: 0 22px; }

.legal-top {
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(255, 255, 255, 0.84);
  backdrop-filter: blur(14px) saturate(150%);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
  border-bottom: 1px solid var(--line);
}
.legal-top .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  height: 64px;
}
.brand {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
}
.brand span { color: #2563eb; }
.brand:hover { text-decoration: none; }
.back {
  padding: 5px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: #4a5a6d;
  font-size: 13px;
  text-decoration: none;
  transition: color 0.16s ease, border-color 0.16s ease;
}
.back:hover { color: #1d4ed8; border-color: #a5b4fc; text-decoration: none; }

.legal { padding: 56px 0 44px; }

.eyebrow {
  margin: 0 0 12px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ac);
}

h1 {
  margin: 0 0 18px;
  font-size: clamp(30px, 4.4vw, 44px);
  line-height: 1.12;
  letter-spacing: -0.035em;
  font-weight: 850;
  color: var(--ink);
}
@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  h1 {
    background: linear-gradient(112deg, #0a1020 6%, #2f3fbf 55%, #0d7d92 96%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
}

.lede {
  max-width: 62ch;
  margin: 0 0 6px;
  font-size: 17px;
  color: #3f5069;
}

h2 {
  margin: 36px 0 10px;
  font-size: 19px;
  letter-spacing: -0.01em;
}

p { margin: 10px 0; color: #46586f; }

code {
  padding: 1px 5px;
  border-radius: 5px;
  background: rgba(15, 35, 80, 0.06);
  font-size: 0.92em;
}

.policy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 8px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}
.policy-grid a {
  display: block;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.82);
  color: #263a56;
  font-size: 14px;
  text-decoration: none;
  transition: border-color 0.16s ease, background 0.16s ease, color 0.16s ease;
}
.policy-grid a:hover {
  border-color: #a5b4fc;
  background: #fff;
  color: #1d4ed8;
  text-decoration: none;
}

.note {
  margin-top: 26px;
  font-size: 13px;
  color: var(--muted);
}

.legal-foot {
  margin-top: 40px;
  padding: 24px 0 48px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--muted);
}
.legal-foot p { margin: 4px 0; color: var(--muted); }
.legal-foot a { color: #4a5a6d; }

@media (max-width: 640px) {
  .legal { padding: 36px 0 28px; }
  .lede { font-size: 15.5px; }
  .legal-top .wrap { height: 56px; }
}