:root {
  --bg: #f7f7f4;
  --fg: #1b2430;
  --muted: #8b8b87;
  --line: #e3e3de;
  --accent: #2b3a4d;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body { height: 100%; }

body {
  background:
    radial-gradient(120% 90% at 70% 0%, #ffffff 0%, var(--bg) 55%) no-repeat,
    var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(1.5rem, 5vw, 3rem);
}

.page {
  width: 100%;
  max-width: 660px;
  min-height: 62vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 4rem;
}

/* Brand */
.brand {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  animation: rise 0.8s cubic-bezier(0.2, 0.6, 0.2, 1) both;
}

.brand-mark {
  width: 2.75rem;
  height: 2.75rem;
  display: block;
  filter: drop-shadow(0 6px 16px rgba(23, 23, 26, 0.14));
}

.brand-name {
  font-size: 1.02rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* Hero —— 居中,层次分明的三段 */
.hero {
  text-align: center;
  animation: rise 0.8s 0.15s cubic-bezier(0.2, 0.6, 0.2, 1) both;
}

.eyebrow {
  font-size: 0.72rem;
  letter-spacing: 0.34em;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 1.8rem;
}

.title {
  font-size: clamp(2.1rem, 6.4vw, 3.4rem);
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.18;
  text-wrap: balance;
  margin-bottom: 1.1rem;
}

.title-en {
  font-family: Georgia, "Times New Roman", "Songti SC", serif;
  font-style: italic;
  font-size: clamp(1rem, 2.4vw, 1.2rem);
  color: var(--muted);
  letter-spacing: 0.03em;
  margin-bottom: 2.4rem;
}

.subtitle {
  display: inline-block;
  font-size: clamp(1rem, 2.2vw, 1.12rem);
  color: var(--fg);
  letter-spacing: 0.04em;
  padding-top: 1.7rem;
  border-top: 1px solid var(--line);
}

/* Footer */
.footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.9rem;
  font-size: 0.82rem;
  color: var(--muted);
  animation: rise 0.8s 0.3s cubic-bezier(0.2, 0.6, 0.2, 1) both;
}

.domain { font-weight: 600; color: var(--fg); letter-spacing: 0.02em; }

.divider { width: 1px; height: 0.85rem; background: var(--line); }

@keyframes rise {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .brand, .hero, .footer { animation: none; }
}