:root{--bg:#f4f8ff;--ink:#1d2a44;--blue:#2f6fed;--green:#1fa971;--red:#d64545;--card:#fff}
*{box-sizing:border-box}
body{margin:0;font-family:"Segoe UI",system-ui,Arial,sans-serif;background:var(--bg);color:var(--ink);font-size:18px;line-height:1.45}
.top{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;background:var(--blue);padding:12px 20px}
.top a,.top button.link{color:#fff;text-decoration:none;margin-left:14px;font-size:16px}
.brand{font-weight:700;font-size:20px;margin-left:0!important}
main{max-width:860px;margin:24px auto;padding:0 16px}
footer{text-align:center;color:#667;font-size:13px;padding:24px}
footer .disclaimer{max-width:760px;margin:0 auto;line-height:1.5}
.card{background:var(--card);border-radius:14px;padding:20px;margin:14px 0;box-shadow:0 2px 8px #0001}
.narrow{max-width:480px;margin:30px auto}
.small{font-size:14px;color:#556}
label{display:block;margin:12px 0;font-weight:600}
input,select{display:block;width:100%;padding:10px;margin-top:4px;font-size:17px;border:2px solid #cdd7ee;border-radius:10px;font-family:inherit;background:#fff}
.btn{display:inline-block;background:var(--blue);color:#fff;border:0;border-radius:10px;padding:12px 22px;font-size:18px;cursor:pointer;text-decoration:none;margin-top:8px}
.btn.alt{background:#fff;color:var(--blue);border:2px solid var(--blue)}
.btn.green{background:var(--green)}
button.link{background:none;border:0;cursor:pointer;font:inherit;color:var(--blue);text-decoration:underline}
.danger{color:var(--red)!important}
.inline{display:inline}
.flash{padding:12px 16px;border-radius:10px;margin-bottom:12px}
.flash.ok{background:#dff6ea}
.flash.err{background:#fde3e3}
.badge{background:#e8edf7;border-radius:20px;padding:4px 12px;font-size:14px}
table.t{width:100%;border-collapse:collapse;font-size:16px}
table.t td,table.t th{border-bottom:1px solid #e3e8f4;padding:8px 6px;text-align:left;vertical-align:middle}
.qrbox{display:inline-block;padding:10px;background:#fff;border:2px solid #cdd7ee;border-radius:12px;margin:8px auto}
.qrbox svg{width:230px;height:230px;display:block}
.qrbox.dead{opacity:.25}
.paircode{font-family:Consolas,monospace;font-size:30px;font-weight:700;letter-spacing:4px;background:#e8edf7;border-radius:10px;padding:4px 14px}
.rules{background:#fffbea;border:2px solid #f0b429;border-radius:12px;padding:6px 18px 10px;margin:16px 0;font-size:15px}
.rules h2{margin:10px 0 4px;font-size:17px}
.rules ul{margin:4px 0 0;padding-left:20px}
.rules li{margin:6px 0}
.about{background:#f1ecfb;border:2px solid #d9cdf3;font-size:15px}
.about h2{margin:0 0 6px;font-size:18px;color:#4b2a8a}
code{font-size:14px}