:root{--bg:#F7F9FF;--surface:#fff;--soft:#EEF2FF;--title:#18203A;--text:#27324A;--muted:#55627A;--aux:#74809A;--blue:#2563EB;--blue2:#60A5FA;--blue3:#1D4ED8;--purple:#7C3AED;--purple2:#A78BFA;--purple3:#5B21B6;--border:rgba(99,102,241,.16);--shadow:0 14px 36px rgba(37,46,86,.08);--radius:14px;--footer:#171B36}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.78 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;overflow-x:hidden}body.locked{overflow:hidden}a{color:inherit;text-decoration:none}img{display:block;max-width:100%;height:auto}button,input{font:inherit}.wrap{width:min(1180px,calc(100% - 32px));margin:auto}.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--border)}.brandbar{height:68px;display:grid;grid-template-columns:auto 1fr 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var(--border);border-radius:var(--radius)}.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.topic{padding:18px}.editor-list{display:grid;gap:12px}.editor-item{display:grid;grid-template-columns:40px 1fr auto;align-items:center;gap:14px;padding:16px 0;border-bottom:1px solid var(--border)}.editor-item:last-child{border-bottom:0}.editor-item span:first-child{width:34px;height:34px;border-radius:10px;background:var(--soft);color:var(--purple);display:grid;place-items:center;font-weight:800}.timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.timeline article{padding:18px;border-left:3px solid var(--blue);background:#fff;border-radius:0 12px 12px 0}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.step{padding:18px}.step 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@media(max-width:420px){.wrap,.content-wrap{width:min(100% - 32px,1180px)}.brand-fallback strong{font-size:15px}.brand-fallback small{font-size:9px}.top-actions{gap:6px}.icon-btn{min-width:44px}.footer-links{grid-template-columns:1fr 1fr}.card,.article-box{padding:18px}.hero h1,.page-hero h1{font-size:28px}}