:root{--ink:#10243e;--muted:#65758b;--line:#d9e1e9;--paper:#fff;--canvas:#f4f7f9;--green:#087443;--green-dark:#075f39;--blue:#1769aa;--danger:#b93838;--shadow:0 18px 45px rgba(22,43,65,.08)}
.row-actions{display:flex;align-items:center;gap:12px}
*{box-sizing:border-box}body{margin:0;min-height:100vh;background:var(--canvas);color:var(--ink);font-family:Inter,"Segoe UI","Microsoft YaHei",sans-serif;letter-spacing:0}button,input,textarea{font:inherit;letter-spacing:0}button,a{transition:background .18s,border-color .18s,opacity .18s}button:disabled{opacity:.55;cursor:not-allowed}.site-header{width:min(1040px,calc(100% - 40px));height:108px;margin:auto;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:13px;color:inherit;text-decoration:none}.brand-icon{width:42px;height:42px;display:grid;place-items:center;background:var(--ink);color:#fff;border-radius:7px;font-weight:800;font-size:22px}.brand strong{display:block;font-size:24px;line-height:1.15}.brand small{display:block;color:var(--muted);margin-top:5px}.icon-link,.icon-button{width:40px;height:40px;border:1px solid var(--line);border-radius:7px;background:#fff;color:var(--ink);display:grid;place-items:center;text-decoration:none;font-size:19px;cursor:pointer}.back-link{color:var(--blue);text-decoration:none;font-weight:600}.redeem-shell,.admin-shell{width:min(1040px,calc(100% - 40px));margin:12px auto 60px}.redeem-panel,.login-panel,.admin-section{background:var(--paper);border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow)}.redeem-panel{padding:34px 38px}.section-title{display:flex;gap:18px;align-items:flex-start;margin-bottom:28px}.step,.eyebrow{font-size:12px;font-weight:800;color:var(--green);letter-spacing:1.2px}.step{width:34px;padding-top:7px;border-top:2px solid var(--green)}h1,h2,h3,p{margin-top:0}.section-title h1{font-size:22px;margin-bottom:7px}.section-title p,.section-heading p,.login-panel p,.dialog-head p{color:var(--muted);margin-bottom:0}.field-label{display:block;font-weight:700;margin:0 0 9px}textarea,input{width:100%;border:1px solid #cbd6e1;border-radius:7px;background:#fff;color:var(--ink);outline:none}textarea{resize:vertical;padding:16px;line-height:1.7}input{height:44px;padding:0 13px}textarea:focus,input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(23,105,170,.1)}.field-foot{display:flex;justify-content:space-between;color:var(--muted);font-size:13px;margin:9px 0 20px}.primary,.secondary,.ghost{border:0;border-radius:7px;cursor:pointer;font-weight:700}.primary{min-height:44px;padding:0 20px;background:var(--green);color:#fff}.primary:hover{background:var(--green-dark)}.redeem-panel>.primary{display:inline-flex;align-items:center;gap:10px}.download-icon{font-size:22px}.secondary,.ghost{height:38px;padding:0 14px;border:1px solid var(--line);background:#fff;color:var(--ink)}.trust-strip{display:grid;grid-template-columns:repeat(3,1fr);margin-top:18px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.trust-strip div{padding:20px 22px}.trust-strip div+div{border-left:1px solid var(--line)}.trust-strip strong,.trust-strip span{display:block}.trust-strip span{font-size:13px;color:var(--muted);margin-top:5px}.status{margin-top:16px;border-radius:6px;padding:11px 13px;background:#fff0f0;color:#a42e2e;border:1px solid #f1cccc;font-size:14px}.status.success{background:#ebf8f0;color:#08683c;border-color:#bce4cd}.status.loading{background:#eef5fb;color:#205f91;border-color:#cadfec}footer{width:min(1040px,calc(100% - 40px));margin:0 auto 28px;color:#91a0b0;font-size:12px}.login-panel{width:min(460px,100%);margin:60px auto;padding:36px}.login-panel h1{margin:9px 0}.login-panel input{margin:0 0 15px}.dashboard-head{display:flex;justify-content:space-between;align-items:end;margin:12px 0 20px}.dashboard-head h1{font-size:30px;margin:5px 0 0}.metrics{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:8px;background:#fff;margin-bottom:18px}.metrics div{padding:20px 22px}.metrics div+div{border-left:1px solid var(--line)}.metrics span,.metrics strong{display:block}.metrics span{font-size:13px;color:var(--muted)}.metrics strong{font-size:27px;margin-top:5px}.admin-section{padding:25px;margin-bottom:18px}.section-heading,.dialog-head,.generated>div,.command-row{display:flex;align-items:center;justify-content:space-between}.section-heading h2,.dialog-head h2{font-size:18px;margin-bottom:5px}.upload-grid{display:grid;grid-template-columns:1fr 280px;gap:18px}.upload-zone{min-height:120px;border:1px dashed #a9b8c7;border-radius:7px;display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;background:#fafcfd}.upload-zone:hover{border-color:var(--blue);background:#f6faff}.upload-mark{font-size:25px;color:var(--blue)}.upload-zone small{color:var(--muted);margin-top:6px}.quantity-control{border-left:1px solid var(--line);padding-left:18px;display:grid;grid-template-columns:1fr 90px;gap:9px;align-content:center}.quantity-control label{grid-column:1/-1;font-weight:700}.quantity-control button{grid-column:1/-1}.generated{margin-top:18px;border-top:1px solid var(--line);padding-top:18px}.generated h3{font-size:14px;margin:0}.generated textarea{margin-top:12px;font-family:Consolas,monospace;font-size:13px}.command-row{gap:8px}.table-wrap{overflow-x:auto;margin-top:17px}table{width:100%;border-collapse:collapse;min-width:680px}th,td{text-align:left;padding:13px 12px;border-bottom:1px solid #e8edf2;font-size:14px}th{color:var(--muted);font-size:12px;text-transform:uppercase}td strong,td small{display:block}td small{color:var(--muted);margin-top:4px}.badge{display:inline-block;padding:3px 8px;border-radius:4px;background:#eef2f5;font-size:12px}.badge.available{background:#e8f6ee;color:#087443}.badge.used{background:#eef2f5;color:#65758b}.badge.revoked{background:#fff0f0;color:#a42e2e}.table-action,.danger-link{border:0;background:none;cursor:pointer;padding:0;font-weight:700}.table-action{color:var(--blue)}.danger-link{color:var(--danger)}.empty{text-align:center;color:var(--muted);padding:36px}.eyebrow{display:block}dialog{width:min(820px,calc(100% - 32px));max-height:82vh;border:1px solid var(--line);border-radius:8px;padding:25px;color:var(--ink);box-shadow:0 24px 80px rgba(10,28,46,.25)}dialog::backdrop{background:rgba(16,36,62,.38)}.generate-row{display:grid;grid-template-columns:120px 1fr;gap:10px;margin:20px 0}.compact{max-height:340px}.compact table{min-width:620px}code{font-family:Consolas,monospace}.dialog-head .icon-button{font-size:24px}body:has(dialog[open]){overflow:hidden}
@media(max-width:700px){.site-header,.redeem-shell,.admin-shell,footer{width:min(100% - 24px,1040px)}.site-header{height:88px}.brand strong{font-size:19px}.brand small{font-size:11px}.brand-icon{width:36px;height:36px}.redeem-shell{margin-top:5px}.redeem-panel{padding:24px 18px}.section-title{gap:12px}.field-foot{align-items:flex-start;gap:5px;flex-direction:column}.redeem-panel>.primary{width:100%;justify-content:center}.trust-strip{grid-template-columns:1fr}.trust-strip div+div{border-left:0;border-top:1px solid var(--line)}.metrics{grid-template-columns:repeat(2,1fr)}.metrics div:nth-child(3){border-left:0;border-top:1px solid var(--line)}.metrics div:nth-child(4){border-top:1px solid var(--line)}.upload-grid{grid-template-columns:1fr}.quantity-control{border-left:0;border-top:1px solid var(--line);padding:16px 0 0}.admin-section{padding:18px}.generated>div{align-items:flex-start;gap:12px;flex-direction:column}.dashboard-head h1{font-size:25px}.back-link{font-size:13px}}