:root{--ink:#17251f;--muted:#657169;--paper:#f6f4ee;--white:#fff;--green:#0f5b3a;--green2:#18794e;--gold:#d29a46;--line:#dde3de;--shadow:0 14px 40px rgba(23,37,31,.09);font-family:"Microsoft YaHei","PingFang SC",system-ui,sans-serif;color:var(--ink);background:var(--paper)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper)}a{color:inherit;text-decoration:none}button{font:inherit}.shell{width:min(100%,680px);margin:auto;background:var(--white);min-height:100vh;box-shadow:0 0 60px rgba(23,37,31,.08)}.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;padding:12px 18px;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid rgba(221,227,222,.85)}.brand{display:flex;align-items:center;gap:10px}.brand-mark{display:grid;place-items:center;width:40px;height:40px;border-radius:13px;background:var(--green);color:#fff;font:800 18px Georgia}.brand 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8px}.contact-row{display:flex;gap:12px;padding:15px 0;border-bottom:1px solid var(--line)}.contact-row:last-of-type{border-bottom:0}.contact-icon{display:grid;place-items:center;flex:none;width:38px;height:38px;border-radius:12px;background:var(--green);color:#fff}.contact-row b{display:block;margin-bottom:4px}.contact-row span{display:block;color:var(--muted);font-size:13px;line-height:1.5}.contact-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:18px}.qr-placeholder{display:grid;place-items:center;min-height:140px;margin-top:16px;border:1px dashed #9eaaa2;border-radius:16px;color:var(--muted);font-size:13px;text-align:center;background:#fff}.footer{padding:25px 18px 94px;text-align:center;color:var(--muted);font-size:11px;background:#f0f2ef}.bottom-nav{position:fixed;z-index:18;bottom:0;left:50%;transform:translateX(-50%);display:grid;grid-template-columns:repeat(4,1fr);width:min(100%,680px);padding:8px 8px 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