:root {
  --bg: #070d1a;
  --bg2: #0f1b33;
  --card: rgba(20, 34, 58, .82);
  --line: rgba(148, 163, 184, .18);
  --text: #e8eef8;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --accent2: #22d3ee;
  --vip: #fbbf24;
  --ok: #4ade80;
  --bad: #f87171;
  --shadow: 0 24px 60px rgba(0, 0, 0, .35);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(900px 500px at 10% -10%, rgba(56, 189, 248, .18), transparent 60%),
    radial-gradient(700px 420px at 90% 0%, rgba(34, 211, 238, .12), transparent 55%),
    linear-gradient(180deg, var(--bg), var(--bg2));
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent2); }
.site-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(7, 13, 26, .75);
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand small { display: block; color: var(--muted); font-size: 12px; }
.logo {
  width: 42px; height: 42px; border-radius: 12px;
  display: grid; place-items: center; font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #082f49;
}
.nav { display: flex; gap: 8px; flex-wrap: wrap; }
.nav a {
  padding: 8px 14px; border-radius: 999px; color: var(--muted);
  border: 1px solid transparent;
}
.nav a.active, .nav a:hover {
  color: var(--text); border-color: var(--line); background: rgba(255,255,255,.04);
}
.site-main { max-width: 1120px; margin: 0 auto; padding: 28px 20px 60px; }
.hero {
  display: grid; grid-template-columns: 1.2fr .8fr; gap: 24px; align-items: center;
  margin-bottom: 36px;
}
.hero-card, .panel, .feature, .form-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--shadow);
}
.hero-card { padding: 28px; }
.hero h1 { font-size: clamp(28px, 4vw, 44px); line-height: 1.1; margin: 0 0 12px; }
.hero p { color: var(--muted); font-size: 17px; line-height: 1.6; }
.badges { display: flex; gap: 8px; flex-wrap: wrap; margin: 16px 0; }
.badge {
  padding: 6px 12px; border-radius: 999px; font-size: 12px; font-weight: 700;
  border: 1px solid var(--line); background: rgba(255,255,255,.03);
}
.badge.vip { color: #fde68a; border-color: rgba(251,191,36,.35); }
.cta { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 20px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 18px; border-radius: 12px; font-weight: 700; border: none; cursor: pointer;
}
button:disabled,
.btn:disabled {
  opacity: .45;
  cursor: not-allowed;
  pointer-events: none;
}
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--line); }
.preview { padding: 20px; }
.preview .mock {
  border-radius: 16px; border: 1px solid var(--line); padding: 16px;
  background: linear-gradient(180deg, rgba(8,16,32,.9), rgba(12,24,44,.9));
}
.mock .row { display: flex; justify-content: space-between; margin: 10px 0; font-size: 14px; }
.mock .bar { height: 8px; border-radius: 999px; background: rgba(255,255,255,.08); overflow: hidden; }
.mock .bar > i { display: block; height: 100%; background: linear-gradient(90deg, var(--accent), var(--ok)); width: 72%; }
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 28px 0; }
.feature { padding: 18px; }
.feature h3 { margin: 0 0 8px; font-size: 16px; }
.feature p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.5; }
.panel { padding: 22px; margin-top: 20px; }
.form-card { padding: 24px; max-width: 520px; margin: 0 auto; }
label { display: grid; gap: 6px; margin: 12px 0; color: var(--muted); font-size: 14px; }
input, select, textarea {
  width: 100%; padding: 10px 12px; border-radius: 10px;
  border: 1px solid var(--line); background: rgba(8, 16, 32, .9); color: var(--text);
}
.alert { padding: 12px 14px; border-radius: 12px; margin-bottom: 14px; border: 1px solid var(--line); }
.alert.ok { border-color: rgba(74,222,128,.35); color: #bbf7d0; }
.alert.bad { border-color: rgba(248,113,113,.35); color: #fecaca; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.site-foot { text-align: center; color: var(--muted); padding: 24px; font-size: 13px; }
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 16px; }
.stat { padding: 16px; border-radius: 14px; border: 1px solid var(--line); background: rgba(255,255,255,.03); }
.stat strong { display: block; font-size: 24px; }
.stat span { color: var(--muted); font-size: 12px; }
.muted { color: var(--muted); font-size: 14px; line-height: 1.5; }
.form-grid { max-width: 520px; }
.edition-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin: 16px 0 8px;
}
.edition {
  padding: 16px 18px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.03);
}
.edition.recommend {
  border-color: rgba(56, 189, 248, .45);
  box-shadow: 0 0 0 1px rgba(56,189,248,.1);
}
.edition h3 { margin: 0 0 6px; font-size: 18px; }
.edition .size { color: var(--accent); font-weight: 700; font-size: 13px; margin-bottom: 10px; }
.edition ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}
.edition li { margin: 4px 0; }
.edition .tip {
  margin: 12px 0 0;
  font-size: 13px;
  color: var(--text);
  opacity: .9;
}
.countdown-box {
  display: flex; align-items: baseline; gap: 8px;
  margin: 12px 0 8px; font-size: 14px;
}
#cd-num {
  font-size: 42px; font-weight: 800; color: var(--accent);
  line-height: 1; font-variant-numeric: tabular-nums;
}
.cd-bar {
  height: 8px; border-radius: 999px; background: rgba(255,255,255,.08);
  overflow: hidden; margin-bottom: 8px;
}
.cd-bar > i {
  display: block; height: 100%; width: 0;
  background: linear-gradient(90deg, var(--accent), var(--ok));
  transition: width .35s linear;
}
.ad-panel {
  margin-top: 22px; padding: 18px 20px;
  border-radius: 16px; border: 1px solid var(--line);
  background: rgba(255,255,255,.03);
}
.ad-panel h2 { margin: 0 0 12px; font-size: 16px; }
.ad-slot { margin-bottom: 14px; }
.ad-slot:last-child { margin-bottom: 0; }
.ad-title { font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.ad-body { overflow: auto; }
.ad-body img { max-width: 100%; height: auto; border-radius: 10px; }
.ad-body a { color: var(--accent); }
.pay-card {
  max-width: 640px; margin: 20px auto 0; padding: 22px;
  border-radius: 20px; border: 1px solid rgba(251,191,36,.35);
  background: linear-gradient(160deg, rgba(251,191,36,.08), rgba(20,34,58,.9));
  box-shadow: var(--shadow);
}
.pay-card h2 { margin: 8px 0 10px; font-size: 20px; }
.pay-qr-wrap {
  margin: 16px auto 8px; text-align: center;
  max-width: 300px; padding: 14px;
  border-radius: 16px; background: #fff;
  box-shadow: 0 8px 24px rgba(0,0,0,.25);
}
.pay-qr { display: block; width: 100%; height: auto; border-radius: 8px; }
.pay-qr-hint { margin: 10px 0 0; font-size: 12px; color: #475569; line-height: 1.4; }
.pay-alias { font-weight: 500; color: var(--muted); font-size: 13px; }
.pay-manual { margin: 14px 0 0; font-size: 13px; }
.pay-card .pay-row a { color: #93c5fd; }
.pay-grid { display: grid; gap: 10px; margin-top: 14px; }
.pay-row {
  display: flex; justify-content: space-between; align-items: flex-start; gap: 12px;
  padding: 10px 12px; border-radius: 12px; border: 1px solid var(--line);
  background: rgba(0,0,0,.18); font-size: 14px;
}
.pay-row > span { color: var(--muted); flex-shrink: 0; }
.pay-row strong { text-align: right; word-break: break-all; }
.pay-val { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.pay-copy { padding: 6px 10px !important; font-size: 12px !important; }
@media (max-width: 600px) {
  .pay-row { flex-direction: column; }
  .pay-row strong, .pay-val { text-align: left; justify-content: flex-start; }
}
.gate-steps { list-style: none; margin: 22px 0 0; padding: 0; display: grid; gap: 14px; }
.gate-steps > li {
  padding: 16px 18px; border-radius: 16px; border: 1px solid var(--line);
  background: rgba(255,255,255,.03);
}
.gate-steps > li.current { border-color: rgba(56, 189, 248, .45); box-shadow: 0 0 0 1px rgba(56,189,248,.12); }
.gate-steps > li.done { border-color: rgba(74, 222, 128, .35); }
.gate-steps > li.locked { opacity: .72; }
.gate-steps > li strong { display: block; margin-bottom: 6px; }
@media (max-width: 900px) {
  .hero, .features, .stat-grid, .grid2, .edition-grid { grid-template-columns: 1fr; }
  .site-top { flex-direction: column; align-items: flex-start; }
}