:root{color-scheme:light dark;--paper:#f7f7f1;--ink:#1a312e;--muted:#586b65;--line:#dce4de;--card:#fff;--accent:#a33512}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.85 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}
a{color:var(--accent);text-underline-offset:4px;overflow-wrap:anywhere}a:focus-visible{outline:3px solid #e67650;outline-offset:5px;border-radius:3px}
.skip{position:absolute;left:16px;top:-100px;background:var(--card);padding:8px 16px}.skip:focus{top:8px}
header{max-width:980px;margin:auto;padding:30px 28px;display:flex;align-items:center;justify-content:space-between;gap:24px;border-bottom:1px solid var(--line)}
.brand{display:flex;gap:12px;align-items:center;text-decoration:none;color:var(--ink);font-weight:700}.brand img{border-radius:12px}.brand small{display:block;font-size:12px;font-weight:400;color:var(--muted)}
nav{display:flex;gap:22px;font-size:14px;flex-wrap:wrap}nav a{color:var(--ink)}
main{max-width:800px;margin:46px auto;padding:0 28px}h1{font-size:clamp(28px,5vw,40px);line-height:1.3;letter-spacing:-.025em;margin:10px 0 18px}
.eyebrow{font-size:12px;letter-spacing:.16em;font-weight:600;color:var(--muted)}.date{font-size:14px;color:var(--muted)}
aside{padding:20px 22px;border-left:4px solid #dd7657;background:var(--card);border-radius:0 12px 12px 0;margin:26px 0 38px}
section{margin:32px 0}h2{font-size:22px;line-height:1.5;margin:0 0 12px}p{margin:12px 0;overflow-wrap:anywhere}li{margin:7px 0}
footer{max-width:980px;padding:26px 28px 42px;margin:50px auto 0;border-top:1px solid var(--line);color:var(--muted);font-size:13px}
@media(max-width:600px){header{padding:22px;display:block}nav{margin-top:20px;gap:20px}main{margin:30px auto;padding:0 22px}footer{padding:22px}}
@media(prefers-color-scheme:dark){:root{--paper:#101b19;--ink:#e7eee8;--muted:#adc0b5;--line:#33473f;--card:#1d2d29;--accent:#f4ac8c}}