:root{--bg:#f5f6f8;--card:#fff;--text:#16181d;--muted:#6b7280;--border:#e4e6eb;--brand:#201747;--express:#201747;--local:#c2410c;--accent:#2b6cb0;--warn-bg:#fff8e6;--warn-border:#f0d18a;--radius:12px}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--text);margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Segoe UI,Roboto,sans-serif;font-size:15px;line-height:1.5}.shell{max-width:1080px;margin:0 auto;padding:24px 16px 64px}.header{text-align:center;margin-bottom:20px}.header h1{letter-spacing:.5px;margin:0 0 6px;font-size:22px}.header p{color:var(--muted);margin:0;font-size:13px}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:16px;padding:18px;box-shadow:0 1px 2px 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