:root {
  --bg: #0b0b10;
  --card: #14141c;
  --line: #2a2a36;
  --text: #eceaf3;
  --muted: #8a8699;
  --pink: #ff5e8a;
  --purple: #c084fc;
  --gold: #f0c36a;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
.nav {
  position: sticky; top: 0; z-index: 30;
  display: flex; align-items: center; gap: 18px;
  padding: 12px 22px;
  background: rgba(12,10,16,.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.nav-logo {
  font-weight: 800; letter-spacing: 1px; font-size: 18px;
  background: linear-gradient(90deg, var(--pink), var(--purple));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.nav-links { display: flex; gap: 8px; flex: 1; }
.nav-links a {
  padding: 8px 14px; border-radius: 999px; color: var(--muted); font-size: 14px;
}
.nav-links a.active, .nav-links a:hover { background: #1b1b24; color: #fff; }
.nav-right { display: flex; align-items: center; gap: 10px; margin-left: auto; }
.badge {
  font-size: 12px; padding: 3px 8px; border-radius: 999px;
  background: #1e1e28; color: var(--gold);
}
.btn {
  border: none; cursor: pointer; border-radius: 999px;
  padding: 8px 16px; font-weight: 600; font-size: 13px; color: #fff;
}
.btn-pay {
  background: linear-gradient(90deg, #ffb347, #ff5e8a);
  box-shadow: 0 6px 16px rgba(255,94,138,.28);
}
.btn-ghost { background: #1b1b24; color: #ddd; }
.btn-primary { background: linear-gradient(90deg, var(--pink), var(--purple)); }
.modal {
  position: fixed; inset: 0; z-index: 80; background: rgba(0,0,0,.72);
  display: none; align-items: center; justify-content: center; padding: 20px;
}
.modal.show { display: flex; }
.modal-card {
  width: min(720px, 100%); background: #15151e; border: 1px solid var(--line);
  border-radius: 18px; padding: 22px; max-height: 90vh; overflow: auto;
}
.modal-card h3 { margin-bottom: 14px; }
.field { width: 100%; margin: 8px 0; padding: 10px 12px; border-radius: 10px;
  border: 1px solid var(--line); background: #0f0f16; color: #fff; }
.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; }
.plan {
  border: 1px solid var(--line); border-radius: 14px; padding: 14px; background: #101018;
}
.cs-box { text-align: center; margin: 8px 0 12px; }
.cs-box img { width: 180px; height: 180px; border-radius: 12px; background: #fff; padding: 6px; }
.cs-qq { font-size: 18px; font-weight: 700; margin: 10px 0 4px; }
.hidden { display: none !important; }
.plan:hover { border-color: var(--pink); }
.plan .price { font-size: 22px; font-weight: 800; margin: 8px 0 4px; }
.plan .hint { color: var(--muted); font-size: 12px; }
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: #222; color: #fff; padding: 10px 16px; border-radius: 10px;
  z-index: 90; display: none;
}
.toast.show { display: block; }
.wrap { max-width: 1100px; margin: 0 auto; padding: 20px 18px 70px; }