:root{color-scheme:dark;--bg:#080e12;--panel:#101c23;--line:#263840;--cyan:#59eddd;--muted:#98afb9}*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 90% 0,#153332 0,transparent 46%),var(--bg);font:15px/1.5 system-ui,sans-serif;color:#ecf5f7}a{color:var(--cyan);text-decoration:none}header{border-bottom:1px solid var(--line);padding:22px max(24px,calc((100vw - 1180px)/2));display:flex;justify-content:space-between;align-items:center}.brand{letter-spacing:.2em;font-weight:900}.brand span{color:var(--cyan)}main{max-width:1180px;margin:auto;padding:42px 24px}h1{font-size:clamp(30px,4vw,46px);letter-spacing:-.04em;margin:6px 0}h2{font-size:19px;margin:0 0 22px}p{color:var(--muted)}.eyebrow{text-transform:uppercase;letter-spacing:.18em;color:var(--cyan);font-size:11px;font-weight:800}.layout{display:grid;grid-template-columns:400px 1fr;gap:24px;margin-top:30px}.card{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:26px}label{display:block;font-size:12px;font-weight:650;color:#c7d8df;margin:16px 0 7px}input,select,button{font:inherit;border-radius:9px}input,select{width:100%;padding:12px;color:#fff;background:#0a141a;border:1px solid #36505c}input:focus,select:focus{outline:2px solid var(--cyan);outline-offset:2px}.pair{display:grid;grid-template-columns:1fr 1fr;gap:14px}button,.button{cursor:pointer;background:var(--cyan);border:0;padding:12px 17px;color:#06221c;font-weight:750;display:inline-block}.secondary{background:transparent;color:#d4e9ee;border:1px solid #3c5662}button:disabled{opacity:.45;cursor:wait}.wide{width:100%;margin-top:22px}.code{display:flex;gap:8px}.code input{min-width:0;font-family:monospace;letter-spacing:.07em}.hint{font-size:12px;margin:8px 0}.preview{margin-top:22px;padding:18px;border-radius:12px;background:#132e2c;border:1px dashed #3a8074}.preview strong{display:block;font-size:27px;color:var(--cyan)}.stats{display:flex;gap:30px;padding:18px 0;border-bottom:1px solid var(--line);margin-bottom:20px}.stats b{font-size:26px;display:block}.stats span{color:var(--muted);font-size:12px}.coupon{padding:18px 0;border-bottom:1px solid var(--line)}.coupon strong{font-family:monospace;font-size:17px}.top{display:flex;justify-content:space-between;align-items:center;gap:15px}.badge{font-size:11px;padding:4px 9px;border-radius:30px;color:var(--cyan);background:#183731}.coupon p{font-size:13px;margin:8px 0 12px}.actions{display:flex;gap:8px}.actions button{font-size:12px;padding:7px 12px}.status{padding:14px;border:1px solid var(--line);border-radius:9px;margin:20px 0;white-space:pre-line}.error{border-color:#c06666;color:#ffbebe}.hidden,[hidden]{display:none!important}footer{margin-top:25px;color:var(--muted);font-size:12px}.redeem{max-width:520px;margin:30px auto}.redeem h1{font-size:36px}@media(max-width:860px){.layout{grid-template-columns:1fr}header{padding:18px 22px}main{padding:26px 18px}.card{padding:22px}}