:root{--paper:#f7f7f4;--ink:#1c211d;--muted:#727971;--line:#daddd7;--accent:#bd4d37;--green:#315d4b;--white:#fff;--shadow:0 18px 45px rgba(31,36,31,.09)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,"PingFang SC","Microsoft YaHei",sans-serif;letter-spacing:0}button,input,select{font:inherit;letter-spacing:0}button{cursor:pointer}.topbar{height:76px;padding:0 clamp(20px,5vw,72px);display:flex;align-items:center;border-bottom:1px solid var(--line);background:rgba(247,247,244,.96);position:sticky;top:0;z-index:10}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);min-width:230px}.brand-mark{width:36px;height:36px;background:var(--ink);color:#fff;display:grid;place-items:center;font-family:Georgia,serif;font-size:21px}.brand b{display:block;font-size:17px}.brand 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span{position:absolute;bottom:14px;left:14px;background:rgba(255,255,255,.92);padding:7px 10px;font-size:11px}.color-overview,.matched-color{padding:34px}.color-overview>p:first-child,.matched-color>p:first-child,.alternatives>span{font-size:11px;color:var(--muted);margin:0}.color-overview h3{font:400 35px Georgia,"Songti SC",serif;margin:16px 0 30px}.metrics{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:16px 0;margin-bottom:22px}.metrics span{font-size:10px;color:var(--muted);border-right:1px solid var(--line);padding-left:12px}.metrics span:first-child{padding-left:0}.metrics span:last-child{border:0}.metrics b{display:block;color:var(--ink);font-size:16px;margin-bottom:4px}.color-overview>p:last-child{font-size:12px;color:var(--muted);line-height:1.7}.target-row{display:flex;gap:18px;align-items:center;margin:23px 0 40px}.large-swatch{width:68px;height:68px;box-shadow:inset 0 0 0 1px 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