:root{--bg: #f4f6fb;--card: #ffffff;--text: #111827;--muted: #6b7280;--line: #e5e7eb;--blue: #2f6bff;--blue-2: #6d5cff;--green: #16a34a;--danger: #dc2626;--shadow: 0 18px 40px rgba(17, 24, 39, .08);font-family:Inter,Segoe UI,Helvetica,Arial,sans-serif;color:var(--text);background:var(--bg)}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:linear-gradient(180deg,#f8faff,#eef2f8)}a{color:var(--blue);text-decoration:none}button,input,select{font:inherit}.shell{max-width:1080px;margin:0 auto;padding:24px 20px 48px}.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:28px}.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:var(--text)}.brand-mark{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--blue),var(--blue-2));display:grid;place-items:center;color:#fff;font-size:14px}.nav-links{display:flex;gap:14px;flex-wrap:wrap}.nav-links a{color:var(--muted);font-weight:600;font-size:14px}.nav-links a:hover{color:var(--text)}.hero{background:var(--card);border:1px solid var(--line);border-radius:24px;padding:40px 32px;box-shadow:var(--shadow);margin-bottom:24px}.hero h1{margin:0 0 12px;font-size:clamp(28px,5vw,42px);letter-spacing:-.03em}.hero p{margin:0 0 22px;color:var(--muted);max-width:560px;line-height:1.55}.cta-row{display:flex;gap:12px;flex-wrap:wrap}.btn{border:0;border-radius:999px;padding:12px 20px;font-weight:700;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn-primary{background:linear-gradient(90deg,var(--blue),var(--blue-2));color:#fff;box-shadow:0 10px 24px #2f6bff47}.btn-secondary{background:#fff;color:var(--text);border:1px solid var(--line)}.btn-danger{background:var(--danger);color:#fff}.btn:disabled{opacity:.55;cursor:not-allowed}.card{background:var(--card);border:1px solid 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8px;border-bottom:1px solid var(--line)}th{color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.04em}.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:11px;font-weight:700}.badge.unused{background:#dcfce7;color:#166534}.badge.reserved{background:#fef3c7;color:#92400e}.badge.used{background:#e5e7eb;color:#374151}.badge.revoked,.badge.banned{background:#fee2e2;color:#991b1b}.faq{margin-top:28px}.faq details{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px 16px;margin-bottom:10px}.faq summary{font-weight:700;cursor:pointer}.faq p{color:var(--muted);margin:8px 0 0}.login-box{max-width:380px;margin:80px auto}html[data-theme=dark]{--bg: #0f1218;--card: #1a2030;--text: #eef2ff;--muted: #94a3b8;--line: #2a3344;--shadow: 0 18px 40px rgba(0, 0, 0, .45)}html[data-theme=dark] body{background:linear-gradient(180deg,#151a24,#0f1218)}html[data-theme=dark] .btn-secondary,html[data-theme=dark] .form input,html[data-theme=dark] .form select{background:#222a3a;color:var(--text);border-color:var(--line)}html[data-theme=dark] .stat{background:#222a3a}html[data-theme=dark] .admin-side button.active,html[data-theme=dark] .admin-side button:hover,html[data-theme=dark] .code-box{background:#26204a;color:#c4b5fd}.site-footer{margin-top:48px;padding-top:28px;border-top:1px solid var(--line)}.site-footer-inner{display:grid;grid-template-columns:1.2fr 1.8fr;gap:28px}.site-footer-brand p{color:var(--muted);font-size:14px;line-height:1.55;max-width:320px;margin:12px 0 0}.site-footer-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.site-footer-cols h3{margin:0 0 10px;font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}.site-footer-cols a{display:block;color:var(--text);font-size:14px;font-weight:600;margin-bottom:8px}.site-footer-cols a:hover{color:var(--blue)}.site-footer-bottom{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:24px;padding-top:16px;border-top:1px solid var(--line);color:var(--muted);font-size:12px}.nav-links a.active{color:var(--text)}@media(max-width:800px){.site-footer-inner,.site-footer-cols{grid-template-columns:1fr}}