:root{--ink:#10241c;--ink-soft:#4a6157;--brand:#0b6b45;--brand-soft:#e6f4ec;--line:#dce7e0;--bg:#f7faf8;--card:#fff;--radius:14px}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;line-height:1.7}.page{max-width:860px;margin:0 auto;padding:0 16px 48px}.topbar{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:12px;padding:16px 0;display:flex}.brand{color:var(--ink);align-items:center;gap:8px;font-size:18px;font-weight:700;text-decoration:none;display:inline-flex}.brand-mark{font-size:20px}.topnav{gap:16px;display:flex}.topnav a{color:var(--ink-soft);font-size:15px;text-decoration:none}.topnav a:hover{color:var(--brand)}h1{margin:24px 0 12px;font-size:26px;line-height:1.35}h2{margin:32px 0 10px;font-size:19px}h3{margin:18px 0 6px;font-size:16px}p{margin:8px 0}.direct-answer{background:var(--brand-soft);border-left:4px solid var(--brand);color:var(--ink);border-radius:8px;padding:12px 14px;font-size:16px}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);margin:16px 0;padding:18px}.scanner-drop{border:2px dashed var(--line);border-radius:var(--radius);text-align:center;flex-direction:column;align-items:center;gap:10px;padding:22px 16px;display:flex}.scanner-preview{border-radius:10px;max-width:100%;max-height:320px;margin:0 auto;display:block}button{font:inherit}.btn{background:var(--brand);color:#fff;cursor:pointer;border:none;border-radius:10px;padding:10px 18px;font-size:16px;display:inline-block}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-ghost{color:var(--brand);border:1px solid var(--brand);background:0 0}.hint{color:var(--ink-soft);font-size:14px}.err{color:#b3261e;font-size:15px}.result-grid{grid-template-columns:1fr 1fr;gap:10px;margin-top:8px;display:grid}.result-grid div{background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:10px 12px}.result-grid dt{color:var(--ink-soft);margin:0;font-size:13px}.result-grid dd{margin:2px 0 0;font-size:15px}.badge{background:var(--brand-soft);color:var(--brand);border-radius:999px;padding:2px 10px;font-size:13px;display:inline-block}.badge-warn{color:#8a5a12;background:#fdf1e3}details{border-bottom:1px solid var(--line);padding:10px 0}summary{cursor:pointer;font-weight:600}table{border-collapse:collapse;width:100%;font-size:15px}th,td{text-align:left;border-bottom:1px solid var(--line);padding:10px 8px}.footer{border-top:1px solid var(--line);color:var(--ink-soft);margin-top:40px;padding-top:16px;font-size:13px}.footer-links{flex-wrap:wrap;gap:14px;display:flex}.footer-links a{color:var(--ink-soft)}.legal section{margin-bottom:18px}@media (width<=480px){h1{font-size:22px}.result-grid{grid-template-columns:1fr}.page{padding:0 14px 40px}}