:root{color-scheme:dark;--bg:#090a08;--card:#141611;--line:#30332b;--ink:#f4f5ef;--muted:#a0a598;--accent:#e0ed5e}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC",sans-serif;line-height:1.8}a{color:var(--accent);text-underline-offset:4px}header,main,footer{max-width:800px;margin:auto;padding:24px}header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}header a{text-decoration:none}.brand{font-size:18px;font-weight:700;letter-spacing:-.4px}.lang{font-size:13px}main{padding-top:52px;padding-bottom:64px}h1{font-size:clamp(32px,6vw,52px);line-height:1.2;letter-spacing:-1.5px;margin:12px 0 20px}h2{font-size:20px;line-height:1.4;margin:34px 0 10px}p,li{font-size:16px;color:#d2d6c9}small,.meta{color:var(--muted);font-size:13px}.eyebrow{font-size:12px;letter-spacing:2px;color:var(--accent)}.intro{font-size:19px;max-width:650px}.cards{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:40px}.card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:24px;text-decoration:none}.card strong{display:block;font-size:22px}.card span{color:var(--muted);font-size:14px}.notice{border-left:3px solid var(--accent);padding:8px 20px;background:var(--card);border-radius:0 12px 12px 0;margin:28px 0}footer{border-top:1px solid var(--line);font-size:13px;color:var(--muted);display:flex;gap:20px;flex-wrap:wrap}[lang="en"] .zh,[lang="zh-Hans"] .en{display:none}@media(max-width:520px){.cards{grid-template-columns:1fr}main{padding-top:32px}header,main,footer{padding-left:22px;padding-right:22px}}