:root{--paper:#f6f3ec;--paper2:#f0ece4;--ink:#302e28;--muted:#77746a;--accent:#8e3f30;--line:#dcd7cc;--serif:"Songti SC","STSong","SimSun",serif;--sans:"PingFang SC","Microsoft YaHei",Arial,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.85 var(--sans)}a{color:inherit;text-underline-offset:5px}a:hover{color:var(--accent)}a:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--accent);outline-offset:4px}.skip{position:fixed;left:16px;top:-80px;z-index:100;background:white;padding:10px 16px}.skip:focus{top:8px}
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@media(max-width:850px){.header-inner{align-items:flex-start;flex-direction:column;gap:4px;padding:12px 22px}.header-inner nav{gap:4px 12px;flex-wrap:wrap}.article-layout{grid-template-columns:minmax(0,1fr);padding:36px 22px 60px;gap:30px}.article-sidebar{position:static;max-height:none}.article-sidebar nav{display:flex;gap:12px;overflow:auto;padding-bottom:10px}.article-sidebar nav a{flex:0 0 210px}.column-hero{padding-top:44px}.wide{padding-inline:22px}.series-grid{grid-template-columns:1fr 1fr;gap:24px}.column-body{font-size:18px}.article-head h1{font-size:29px}.article-sidebar details{border-bottom:1px solid var(--line)}}
@media(max-width:450px){.series-grid{gap:24px 18px}.series-card h2{font-size:23px}.claim{font-size:17px}.column-body{line-height:1.95}.prev-next{gap:16px}h1{font-size:30px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}