.redeem-app{--surface:#fff;--ink:#182b43;--sub:#62738a;--line:#e1e8f0;--soft:#f4f7fb;--blue:#2563eb;min-height:100vh;color:var(--ink);background:#f7f9fc;font-size:16px}.redeem-app.night{--surface:#142133;--ink:#edf3ff;--sub:#a7b7cc;--line:#2a3a50;--soft:#1b2b41;--blue:#669bff;background:#0b1523}.topbar{border-bottom:1px solid var(--line);background:var(--surface);justify-content:space-between;align-items:center;gap:16px;height:78px;padding:0 max(24px,50% - 550px);display:flex}.brand{color:var(--ink);align-items:center;gap:12px;text-decoration:none;display:flex}.brand>span{color:#fff;background:#2563eb;border-radius:10px;place-items:center;width:36px;height:36px;font-weight:700;display:grid}.brand strong{font-size:18px}.toolbar{gap:16px;display:flex}.toolbar button{color:var(--sub);cursor:pointer;align-items:center;gap:7px;padding:8px;font-size:14px;display:flex}.workspace{max-width:1000px;margin:auto;padding:38px 24px 24px}.intro{text-align:center}.eyebrow{letter-spacing:2px;color:var(--blue);font-size:12px;font-weight:650}.intro h1{letter-spacing:-.8px;margin:10px 0;font-size:32px;font-weight:700}.intro p{color:var(--sub);font-size:15px}.steps{grid-template-columns:repeat(3,1fr);gap:22px;margin:32px 0;list-style:none;display:grid}.steps li{align-items:flex-start;gap:12px;display:flex}.steps li>span{color:#2563eb;background:#e9efff;border-radius:50%;flex-shrink:0;place-items:center;width:32px;height:32px;font-size:14px;font-weight:700;display:grid}.steps .active>span{color:#fff;background:#2563eb}.steps h2{margin:2px 0 5px;font-size:15px;font-weight:600}.steps p{color:var(--sub);font-size:13px;line-height:1.6}.redemption-tabs{max-width:690px;margin:auto}.tabbar{border:1px solid var(--line);grid-template-columns:repeat(3,1fr);background:var(--soft)!important;width:100%!important;height:48px!important;padding:4px!important;display:grid!important}.tabbar [role=tab]{color:var(--sub);cursor:pointer;gap:8px;font-size:14px}.tabbar [role=tab][data-state=active]{background:var(--surface);color:var(--blue);box-shadow:0 1px 4px #132c5010}.exchange-card{background:var(--surface);border:1px solid var(--line);border-radius:16px;margin-top:10px;padding:30px;box-shadow:0 10px 35px #15325a06}.card-heading{align-items:center;gap:14px;margin-bottom:28px;display:flex}.gpt-mark{border:1px solid var(--line);background:var(--soft);border-radius:12px;place-items:center;min-width:44px;height:44px;font-size:13px;font-weight:750;display:grid}.card-heading h2{font-size:20px;font-weight:650}.card-heading p{color:var(--sub);margin-top:4px;font-size:14px}.exchange-card label{color:var(--ink);margin-bottom:10px;font-size:14px;line-height:1.6}.exchange-card input{background:var(--surface);border:1px solid var(--line);height:48px;color:var(--ink);border-radius:9px;margin-top:8px;font-size:16px}.hint{color:var(--sub);margin:9px 0 15px;font-size:13px;line-height:1.7}.primary-button{color:#fff;cursor:pointer;background:#2563eb;border-radius:9px;width:100%;height:46px;margin-top:12px;font-size:15px}.primary-button:hover{background:#1d4ed8}.primary-button:disabled{opacity:.45;cursor:not-allowed}.text-button{color:var(--sub);cursor:pointer;justify-content:center;align-items:center;gap:7px;margin:19px auto 0;font-size:14px;display:flex}.help-box{background:var(--soft);border:1px solid var(--line);border-radius:10px;margin:16px 0;padding:17px;font-size:14px;line-height:1.8}.help-box h3{margin-bottom:10px;font-size:15px;font-weight:650}.help-box ol{padding-left:21px;list-style:decimal}.help-box li{margin:10px 0}.verified{color:#19764b;background:#edf9f2;border:1px solid #ccebd9;border-radius:9px;align-items:center;gap:8px;margin-bottom:17px;padding:13px;font-size:14px;display:flex}.session-actions{flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:14px;display:flex}.session-actions a{color:var(--blue);align-items:center;gap:7px;display:flex}.session-actions button{color:var(--sub);cursor:pointer}.copy-line{flex-wrap:wrap;align-items:center;gap:12px;margin-top:9px;display:flex}.copy-line code{overflow-wrap:anywhere;font-size:12px}.copy-line button{color:var(--blue);cursor:pointer;align-items:center;gap:6px;display:flex}.privacy{color:#735622;background:#fff8e9;border:1px solid #f1dfb9;border-radius:9px;align-items:flex-start;gap:9px;margin:18px 0;padding:13px;font-size:13px;line-height:1.8;display:flex}.privacy svg{flex-shrink:0;margin-top:3px}.notice,.error{color:#9b422a;background:#fff2ed;border-radius:8px;margin:14px 0;padding:12px;font-size:14px;line-height:1.8}.exchange-card textarea{background:var(--surface);border:1px solid var(--line);width:100%;color:var(--ink);resize:vertical;border-radius:9px;margin-top:8px;padding:13px;font-size:14px;line-height:1.7}.exchange-card textarea:focus,.exchange-card input:focus{outline-offset:2px;outline:2px solid #8bb4ff}.exchange-card textarea:disabled{background:var(--soft);cursor:not-allowed}.consent{align-items:flex-start;gap:10px;margin:18px 0;display:flex}.consent [role=checkbox]{flex-shrink:0;margin-top:4px}.consent label{color:var(--sub);margin:0;font-size:13px;font-weight:400}.status-box{background:var(--soft);border:1px solid var(--line);border-radius:10px;align-items:flex-start;gap:10px;margin-top:20px;padding:16px;font-size:14px;line-height:1.7;display:flex}.status-box svg{color:var(--blue);flex-shrink:0;margin-top:3px}.status-box p{color:var(--sub);margin-top:3px}.workspace footer{color:var(--sub);flex-wrap:wrap;justify-content:space-between;gap:15px;max-width:690px;margin:25px auto;font-size:12px;display:flex}.night .privacy{color:#efd59e;background:#30291c;border-color:#554524}.night .verified{color:#9bdcbc;background:#143326;border-color:#23563c}@media (max-width:640px){.topbar{height:66px;padding:0 18px}.brand strong{font-size:16px}.toolbar{gap:3px}.toolbar button span{display:none}.workspace{padding:26px 16px}.intro h1{font-size:26px}.steps{gap:12px;margin:24px 0}.steps li{flex-direction:column;gap:5px}.steps p{display:none}.steps h2{font-size:13px}.exchange-card{padding:22px 18px}.card-heading p{font-size:13px}.tabbar [role=tab]{gap:5px;font-size:13px}.workspace footer{text-align:center;justify-content:center}.copy-line code{font-size:11px}}