:root { color-scheme: light; }
* { box-sizing: border-box; }
body { font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; margin: 0; background: #f4f6f8; color: #1c2733; line-height: 1.5; }
a { color: #0b5cab; }
header.top { background: #12324f; color: #fff; padding: 14px 18px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
header.top a { color: #fff; text-decoration: none; font-weight: 600; }
header.top nav a { margin-left: 14px; font-weight: 500; }
main { max-width: 980px; margin: 0 auto; padding: 18px; }
.card { background: #fff; border: 1px solid #dde3e8; border-radius: 12px; padding: 18px; margin-bottom: 16px; }
.hero { background: #12324f; color: #fff; border-radius: 12px; padding: 28px 22px; margin-bottom: 16px; }
.hero h1 { margin: 0 0 8px; font-size: 30px; }
.hero p { margin: 0 0 16px; opacity: .92; }
.btn { display: inline-block; background: #0b5cab; color: #fff; border: 0; border-radius: 10px; padding: 12px 20px; font-size: 16px; cursor: pointer; text-decoration: none; }
.btn.big { font-size: 20px; padding: 18px 30px; border-radius: 14px; }
.btn.secondary { background: #e8eef3; color: #12324f; }
.btn.danger { background: #a33a3a; }
.btn:disabled { opacity: .55; cursor: default; }
label { display: block; font-weight: 600; margin: 10px 0 4px; }
input, select, textarea { width: 100%; padding: 11px; font-size: 16px; border: 1px solid #c3ccd4; border-radius: 8px; }
textarea { min-height: 70px; }
.row { display: flex; gap: 12px; flex-wrap: wrap; }
.row > * { flex: 1 1 200px; }
table { width: 100%; border-collapse: collapse; font-size: 15px; }
th, td { text-align: left; padding: 8px; border-bottom: 1px solid #e6ebef; vertical-align: top; }
.badge { display: inline-block; padding: 2px 9px; border-radius: 20px; font-size: 13px; background: #e8eef3; }
.badge.ok { background: #d9ead3; }
.badge.warn { background: #fce5cd; }
.badge.bad { background: #f4cccc; }
.muted { color: #5b6b7a; font-size: 14px; }
.error { color: #a33a3a; font-weight: 600; }
.success { color: #2e7d32; font-weight: 600; }
.hidden { display: none !important; }
#join-wrap { width: 100%; height: 78vh; min-height: 480px; background: #111; border-radius: 12px; overflow: hidden; }
.notice { background: #fff8e1; border: 1px solid #f0d98c; border-radius: 10px; padding: 12px 14px; margin-bottom: 16px; }
@media (max-width: 640px) { .hero h1 { font-size: 24px; } table { font-size: 14px; } }