*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;background:#F7F5F0;color:#222;line-height:1.85}:root{--yellow:#FFE600;--blue:#283593;--text:#222;--muted:#666;--line:#ddd8ce;--card:#fff}.topbar{position:sticky;top:0;z-index:20;background:#fff;border-bottom:3px solid var(--yellow)}.topbar-inner{max-width:900px;height:60px;margin:auto;padding:0 18px;display:flex;align-items:center;justify-content:space-between}.brand{font-weight:900;font-size:18px;cursor:pointer}.back{border:2px solid var(--text);border-radius:8px;padding:6px 12px;font-size:13px;font-weight:700;text-decoration:none;color:var(--text)}main{max-width:860px;margin:28px auto 60px;padding:0 18px}article{background:var(--card);border:2px solid var(--text);border-radius:8px;padding:32px;box-shadow:4px 4px 0 var(--text)}h1{font-size:30px;line-height:1.3;margin-bottom:8px}.meta{font-size:12px;color:var(--muted);padding-bottom:18px;margin-bottom:24px;border-bottom:1px solid var(--line)}.lead{padding:14px;background:#FFF3B0;border-left:4px solid var(--text);margin-bottom:22px}h2{font-size:18px;margin:26px 0 10px}h3{font-size:15px;margin:18px 0 7px}p{margin-bottom:10px}ol,ul{padding-left:24px;margin-bottom:12px}li{margin:5px 0}strong{font-weight:800}a{color:var(--blue)}.contact{background:#f4f2ed;padding:14px;border-radius:6px;margin-top:12px}.notice{font-size:12px;color:var(--muted);margin-top:24px;padding-top:16px;border-top:1px solid var(--line)}@media(max-width:640px){main{margin-top:14px;padding:0 10px}article{padding:20px 16px;box-shadow:3px 3px 0 var(--text)}h1{font-size:24px}.topbar-inner{padding:0 12px}}