:root { color-scheme: light; --ink: #17202a; --muted: #5d6d7e; --line: #e5e8e8; --accent: #1a5276; }
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif; color: var(--ink); line-height: 1.7; }
.top { display: flex; justify-content: space-between; align-items: center; padding: 16px 24px; border-bottom: 1px solid var(--line); }
.logo { font-weight: 800; font-size: 20px; color: var(--ink); text-decoration: none; }
nav a { margin-left: 16px; color: var(--muted); text-decoration: none; }
nav a[aria-current="page"] { color: var(--ink); font-weight: 700; }
main { max-width: 860px; margin: 0 auto; padding: 32px 24px 64px; }
.hero { padding: 24px 0 32px; }
.eyebrow { color: var(--accent); font-weight: 700; margin: 0 0 8px; }
h1 { font-size: 40px; line-height: 1.25; margin: 0 0 16px; }
h2 { margin-top: 40px; }
.lead { color: var(--muted); font-size: 18px; }
.btn { display: inline-block; background: var(--accent); color: #fff; padding: 10px 18px; border-radius: 8px; text-decoration: none; margin-right: 8px; }
.btn.ghost { background: #fff; color: var(--accent); border: 1px solid var(--accent); }
.card { border: 1px solid var(--line); border-radius: 12px; padding: 20px; margin: 16px 0; }
.card h2, .card h3 { margin-top: 0; }
.card a { color: var(--accent); }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.note { color: var(--muted); font-size: 14px; }
footer { border-top: 1px solid var(--line); text-align: center; color: var(--muted); padding: 20px; font-size: 14px; }
footer a { color: var(--muted); }
@media (max-width: 600px) { h1 { font-size: 30px; } .top { flex-direction: column; gap: 8px; align-items: flex-start; } nav a { margin-left: 0; margin-right: 12px; } }