:root{font-family:Inter,Segoe UI,Arial,sans-serif;color:#132d3f;background:#f3f6f8;font-size:16px;--ink:#102c40;--muted:#647787;--line:#dce5eb;--green:#c1ee7a}*{box-sizing:border-box}body{margin:0}button,input,textarea,select{font:inherit}button,a,input,select,textarea{outline-offset:4px}button,.button{border:0;background:var(--ink);color:white;padding:12px 18px;border-radius:8px;cursor:pointer;font-weight:600;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:8px}button:hover,.button:hover{filter:brightness(1.13)}button:disabled{opacity:.5;cursor:wait}.secondary{background:white;color:var(--ink);border:1px solid var(--line)}.danger{background:#fff0ed;color:#b13628}.small{font-size:14px;padding:8px 11px}a{color:#176283}h1,h2,h3,p{margin-top:0}h1{font-size:32px;letter-spacing:-1px;margin-bottom:10px}h2{font-size:21px}h3{font-size:17px}p{line-height:1.65;color:var(--muted)}.shell{display:grid;grid-template-columns:240px 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header{display:flex;justify-content:space-between;align-items:center;padding-bottom:30px}.registration{display:grid;grid-template-columns:.8fr 1fr;gap:45px;align-items:start;margin-top:30px}.eventintro{background:var(--ink);color:white;border-radius:16px;padding:40px;position:sticky;top:30px;min-height:460px}.eventintro h1{font-size:40px;margin:30px 0}.eventintro p{color:#bacbd6;white-space:pre-line}.eventintro .eyebrow{color:var(--green)}.eventintro hr{border:0;border-top:1px solid #365164;margin:30px 0}.eventintro .detail{margin:20px 0;color:#d7e3e9}.login{max-width:440px;margin:10vh auto;padding:30px}.login .brand{margin-bottom:40px}.scanbox{background:#102c40;border-radius:12px;padding:30px;min-height:260px;display:grid;place-items:center;color:#d3e1e9;text-align:center;margin-bottom:20px}#reader{width:100%;background:white;color:#102c40;border-radius:8px;overflow:hidden}.qr{width:240px;max-width:100%;display:block;margin:20px 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.event-banner{max-width:1180px;margin:0 auto 22px;border-radius:18px;overflow:hidden;background:#eef2f3;box-shadow:0 8px 30px rgba(0,0,0,.06)}
.event-banner img{display:block;width:100%;max-height:360px;object-fit:cover}
.banner-editor{margin:22px 0;padding:18px;border:1px solid var(--line);border-radius:14px;background:#fafbfa}
.banner-preview{display:block;width:100%;max-width:760px;max-height:260px;object-fit:cover;border-radius:10px;border:1px solid var(--line);margin:12px 0}
.banner-empty{padding:18px;border:1px dashed var(--line);border-radius:10px;color:#6b7280}
@media(max-width:700px){.event-banner{margin-bottom:14px;border-radius:12px}.event-banner img{max-height:220px}}
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