:root{--ink:#0c1b2a;--muted:#526273;--line:#d9e3eb;--cyan:#27b7d8;--deep:#07131e;--paper:#f7fafc}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--paper);font:16px/1.8 "Microsoft YaHei","PingFang SC",sans-serif}.top{height:86px;padding:0 max(24px,calc((100% - 1120px)/2));display:flex;align-items:center;justify-content:space-between;background:#fff;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;color:var(--ink);text-decoration:none}.brand b{font:800 30px/1 Arial;color:var(--cyan)}.brand span{font-size:18px;font-weight:700}.top nav{display:flex;gap:24px}.top nav a,footer a{color:var(--ink);text-decoration:none}.top nav a:hover,footer a:hover{color:var(--cyan)}main{max-width:1120px;margin:auto;padding:70px 24px 90px}article{max-width:860px}.kicker{margin:0 0 10px;color:#168ca7;font-weight:700;letter-spacing:.08em}h1{font-size:clamp(34px,5vw,58px);line-height:1.15;margin:0 0 24px;letter-spacing:-.03em}.summary{font-size:20px;line-height:1.8;color:#304356;margin:0 0 22px}.boundary{padding:17px 20px;border-left:4px solid var(--cyan);background:#eaf8fb;color:#31515a;margin:0 0 52px}section{padding:34px 0;border-top:1px solid var(--line)}h2{font-size:27px;line-height:1.35;margin:0 0 18px}ul{margin:0;padding-left:1.3em}li{margin:8px 0}.faq details{background:#fff;border:1px solid var(--line);border-radius:10px;margin:10px 0;padding:14px 18px}.faq summary{font-weight:700;cursor:pointer}.faq p{color:var(--muted);margin:10px 0 0}aside{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-top:42px;padding:30px;background:var(--deep);color:#fff;border-radius:14px}aside div{display:grid;gap:4px}aside small{color:#8fd9e9}aside strong{font-size:30px}aside span{color:#bdc9d2}aside a{background:var(--cyan);color:#04121c;text-decoration:none;font-weight:800;padding:12px 22px;border-radius:8px;white-space:nowrap}footer{min-height:86px;padding:22px max(24px,calc((100% - 1120px)/2));display:flex;justify-content:space-between;gap:20px;align-items:center;background:#fff;border-top:1px solid var(--line);color:var(--muted);font-size:14px}@media(max-width:720px){.top{height:auto;padding:18px 20px;align-items:flex-start}.top nav{gap:10px;flex-wrap:wrap;justify-content:flex-end}.top nav a{font-size:13px}main{padding:42px 20px 60px}h1{font-size:36px}.summary{font-size:18px}aside{align-items:flex-start;flex-direction:column}footer{align-items:flex-start;flex-direction:column}}