:root{--bg:#f6f8fb;--surface:#fff;--surface-2:#eef1f6;--border:#dde2ea;--text:#1a2030;--text-dim:#606a7b;--accent:#2f6fed;--accent-dim:#aac4f7;--danger:#d93a3f;--ok:#128a5b}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;margin:0;padding:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Noto Sans TC,sans-serif}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:1080px;margin:0 auto;padding:24px 20px 64px}.topbar{border-bottom:1px solid var(--border);background:var(--surface);justify-content:space-between;align-items:center;padding:14px 20px;display:flex}.topbar .brand{letter-spacing:.3px;font-size:16px;font-weight:700}.topbar .brand small{color:var(--text-dim);margin-left:8px;font-weight:400}.btn{border:1px solid var(--border);background:var(--surface-2);color:var(--text);cursor:pointer;border-radius:8px;align-items:center;gap:6px;padding:9px 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