:root{color-scheme:light;--ink:#243b32;--muted:#5c6d64;--paper:#f7f5ef;--line:#d9e1d8;--green:#285b46}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:17px;line-height:1.85}header,main,footer{max-width:820px;margin:auto;padding:28px 24px}header{display:flex;gap:18px;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}a{color:var(--green);text-underline-offset:4px}nav{display:flex;flex-wrap:wrap;gap:18px}nav a{display:inline-block;padding:6px 0;font-size:15px}main{padding-top:44px;min-height:65vh}h1{font-size:32px;line-height:1.4;margin:0 0 14px}h2{font-size:22px;line-height:1.6;margin:32px 0 10px}p{margin:12px 0}.meta,footer{font-size:14px;color:var(--muted)}.notice{background:#fff7df;border-left:4px solid #aa7b29;padding:16px 20px;margin:24px 0}.card{background:white;border:1px solid var(--line);border-radius:16px;padding:24px;margin:24px 0}.email{font-size:clamp(18px,4.5vw,25px);overflow-wrap:anywhere}footer{border-top:1px solid var(--line)}:focus-visible{outline:3px solid #b87925;outline-offset:5px}li{margin:8px 0}@media(max-width:560px){header{align-items:flex-start;flex-direction:column;gap:6px}main{padding-top:30px}h1{font-size:28px}.card{padding:18px}}