:root{--ink:#111615;--muted:#6f7772;--line:rgba(17,22,21,.14);--green:#183d36;--gold:#9a7435;--soft:#ebe4d7;--serif:"Songti SC","Noto Serif SC",Georgia,serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",sans-serif;background:linear-gradient(180deg,#fbf8f1,#f6f1e8,#e9e1d3)}.wrap{width:min(1180px,calc(100% - 44px));margin:auto}.hero{padding:42px 0 34px}.hero h1{margin:14px 0;font:700 clamp(3.2rem,7vw,6.3rem)/1 var(--serif)}.lead{max-width:880px;color:#3f4a46;line-height:1.9}.layout{display:grid;grid-template-columns:238px 1fr;gap:38px}.toc{position:sticky;top:94px;align-self:start;padding:20px;background:#fffdf8;border:1px solid var(--line)}.toc a{display:block;padding:8px 0;color:inherit;text-decoration:none;border-bottom:1px solid var(--line);font-size:.86rem}.section{scroll-margin-top:94px;margin-bottom:18px;padding:30px;background:#fffdf8c7;border:1px solid var(--line)}h2{margin-top:0;font:700 1.9rem var(--serif)}h3{font:700 1.1rem var(--serif)}p,li{line-height:1.85;color:#45504c}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.fact,.card,.metric,.rel{padding:16px;background:var(--soft)}.cards,.metrics,.swot,.rels,.compare{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.metric b{font:700 1.7rem var(--serif);color:var(--green)}.timeline{border-left:2px solid var(--gold);margin-left:8px}.event{position:relative;padding:0 0 22px 24px}.event:before{content:"";position:absolute;left:-7px;top:6px;width:12px;height:12px;border-radius:50%;background:var(--gold)}.event b{display:block;color:var(--gold)}.flow{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}.step{padding:18px 12px;text-align:center;background:var(--green);color:#fff;min-height:90px;display:grid;place-items:center}.swot article{padding:20px;border:1px solid var(--line);background:#fff}.swot b{color:var(--gold)}.ai{background:linear-gradient(135deg,#fffaf0,#f0e6d3)}.quote{padding:24px;border-left:5px solid var(--gold);background:var(--green);color:#fff;font:700 1.25rem/1.7 var(--serif)}.source{padding:12px 0;border-bottom:1px solid var(--line)}@media(max-width:900px){.layout{grid-template-columns:1fr}.toc{position:static}.flow{grid-template-columns:1fr}.grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:620px){.wrap{width:min(100% - 28px,1180px)}.grid,.cards,.metrics,.swot,.rels,.compare{grid-template-columns:1fr}.section{padding:22px}}