:root {
  --bg: #0e1117;
  --bg-soft: #151a23;
  --card: #ffffff;
  --text: #16181d;
  --text-soft: #6b7280;
  --accent: #4f6ef7;
  --accent-soft: #eef2ff;
  --radius: 18px;
  font-synthesis: none;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 15% -10%, #26314a 0%, transparent 60%),
    radial-gradient(900px 500px at 95% 105%, #1d2b3f 0%, transparent 55%),
    var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  -webkit-font-smoothing: antialiased;
}

.page {
  width: 100%;
  max-width: 720px;
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: clamp(28px, 6vw, 56px);
  box-shadow:
    0 1px 2px rgba(0, 0, 0, .06),
    0 24px 60px -20px rgba(0, 0, 0, .55);
  animation: rise .7s cubic-bezier(.2, .7, .3, 1) both;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: none; }
}

.badge {
  display: inline-block;
  font-size: 11px;
  letter-spacing: .18em;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 6px 12px;
  border-radius: 999px;
}

.title {
  margin: 20px 0 0;
  font-size: clamp(24px, 5.2vw, 40px);
  line-height: 1.15;
  letter-spacing: -.02em;
  word-break: break-word;
}

.dot { color: var(--accent); }

.subtitle {
  margin: 16px 0 0;
  font-size: clamp(15px, 2.2vw, 18px);
  color: var(--text);
}

.hint {
  margin: 8px 0 0;
  font-size: 14px;
  color: var(--text-soft);
}

.divider {
  height: 1px;
  background: linear-gradient(90deg, var(--accent-soft), rgba(0, 0, 0, .06), transparent);
  margin: 28px 0 18px;
}

.meta {
  margin: 0;
  font-size: 12.5px;
  color: var(--text-soft);
  letter-spacing: .02em;
}

@media (prefers-reduced-motion: reduce) {
  .card { animation: none; }
}