:root { color-scheme: light; --ink: #122033; --muted: #5d6b7d; --line: #dce5ef; --blue: #1769e8; --pale: #f4f8fc; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: #f7fafd; color: var(--ink); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; line-height: 1.8; }
a { color: inherit; text-decoration: none; }
.policy-header { position: sticky; top: 0; z-index: 2; display: flex; align-items: center; justify-content: space-between; width: min(1120px, calc(100% - 40px)); min-height: 68px; margin: 0 auto; border-bottom: 1px solid var(--line); background: rgba(247,250,253,.92); backdrop-filter: blur(14px); }
.brand { display: inline-flex; align-items: center; gap: 9px; font-weight: 800; letter-spacing: 0; }
.brand-mark { display: inline-grid; width: 32px; height: 32px; place-items: center; border-radius: 11px 11px 11px 4px; background: linear-gradient(145deg, #1769e8, #16c7d9); }
.brand-mark span { width: 15px; height: 7px; border-radius: 99px; background: white; }
.back-link { color: var(--blue); font-size: 14px; font-weight: 700; }
.policy-shell { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.policy-hero { padding: 78px 0 48px; border-bottom: 1px solid var(--line); }
.eyebrow { margin: 0 0 12px; color: var(--blue); font-size: 12px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
h1 { margin: 0; font-size: clamp(34px, 6vw, 58px); line-height: 1.15; letter-spacing: 0; }
.policy-summary { max-width: 680px; margin: 20px 0 18px; color: var(--muted); font-size: 18px; }
.policy-meta { display: flex; flex-wrap: wrap; gap: 18px; color: var(--muted); font-size: 13px; }
.policy-meta b { color: var(--ink); font-weight: 700; }
.policy-layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 64px; padding: 48px 0 80px; }
.policy-toc { position: sticky; top: 96px; align-self: start; max-height: calc(100vh - 120px); overflow: auto; }
.toc-title { margin-bottom: 12px; color: var(--ink); font-size: 13px; font-weight: 800; }
.policy-toc nav { display: grid; gap: 3px; }
.policy-toc a { padding: 5px 10px; border-left: 2px solid transparent; color: var(--muted); font-size: 13px; line-height: 1.45; }
.policy-toc a:hover, .policy-toc a.active { border-color: var(--blue); color: var(--blue); background: var(--pale); }
.policy-content { min-width: 0; max-width: 760px; }
.policy-content h2 { scroll-margin-top: 94px; margin: 34px 0 12px; padding-top: 4px; font-size: 23px; line-height: 1.35; }
.policy-content h2:first-child { margin-top: 0; }
.policy-content p, .policy-content ol { margin: 0 0 16px; color: #3c4b5f; font-size: 16px; }
.policy-content ol { padding-left: 24px; }
.policy-content strong { color: var(--ink); }
.state { padding: 32px 0; color: var(--muted); }
.state.error { color: #b42318; }
.policy-footer { padding: 24px 20px 42px; color: #7a8797; text-align: center; font-size: 13px; }
@media (max-width: 760px) { .policy-header, .policy-shell { width: min(100% - 32px, 1120px); } .policy-hero { padding: 52px 0 34px; } .policy-layout { display: block; padding-top: 28px; } .policy-toc { position: static; max-height: none; margin-bottom: 34px; padding-bottom: 14px; border-bottom: 1px solid var(--line); } .policy-toc nav { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2px 12px; } .policy-content p, .policy-content ol { font-size: 15px; } }