/* 蓝鲸生态 landing - 暗夜风格 */
:root {
  --bg: #0b1220;
  --surface: #131a2c;
  --surface-2: #1a2238;
  --line: #2a3556;
  --text: #e8ecf5;
  --text-dim: #98a3b9;
  --accent: #7c3aed;
  --accent-2: #4f46e5;
  --live: #10b981;
  --planned: #fbbf24;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  background: radial-gradient(ellipse at top, #1a2238 0%, var(--bg) 60%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 64px 24px 40px;
}

header {
  text-align: center;
  margin-bottom: 48px;
}
header h1 {
  font-size: 36px;
  margin: 0 0 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.logo { -webkit-text-fill-color: initial; }
.subtitle {
  color: var(--text-dim);
  margin: 0;
  font-size: 15px;
  letter-spacing: 0.5px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px 22px 22px;
  display: flex;
  flex-direction: column;
  transition: transform 0.18s ease, border-color 0.18s ease;
}
.card:hover { transform: translateY(-2px); border-color: var(--accent); }
.card.planned { opacity: 0.85; }

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 8px;
}
.card-head h2 {
  margin: 0;
  font-size: 19px;
  font-weight: 600;
}
.badge {
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 999px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.badge.live   { background: rgba(16,185,129,0.15); color: var(--live); border: 1px solid rgba(16,185,129,0.4); }
.badge.planned{ background: rgba(251,191,36,0.12); color: var(--planned); border: 1px solid rgba(251,191,36,0.4); }

.desc {
  font-size: 13.5px;
  color: var(--text-dim);
  line-height: 1.55;
  margin: 0 0 16px;
  flex-grow: 1;
}

.actions {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}
.btn {
  flex: 1;
  text-align: center;
  padding: 9px 12px;
  border-radius: 8px;
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 500;
  transition: background 0.15s ease;
}
.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
}
.btn.primary:hover { filter: brightness(1.1); }
.btn.ghost {
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--line);
}
.btn.ghost:hover { border-color: var(--accent); }
.btn.disabled {
  background: var(--surface-2);
  color: var(--text-dim);
  cursor: not-allowed;
  pointer-events: none;
}

.qr {
  border-top: 1px dashed var(--line);
  padding-top: 14px;
  text-align: center;
}
.qr img {
  width: 110px;
  height: 110px;
  border-radius: 8px;
  background: white;
  padding: 6px;
}
.qr small {
  display: block;
  margin-top: 6px;
  color: var(--text-dim);
  font-size: 11.5px;
}
.qr.placeholder .qr-skel {
  width: 110px;
  height: 110px;
  margin: 0 auto;
  border-radius: 8px;
  background: repeating-linear-gradient(45deg, var(--surface-2), var(--surface-2) 6px, var(--surface) 6px, var(--surface) 12px);
  opacity: 0.5;
}

footer {
  margin-top: 56px;
  text-align: center;
  color: var(--text-dim);
  font-size: 12.5px;
  line-height: 1.8;
}
footer .meta { color: #5b6584; font-size: 11.5px; }

/* 介绍页特定 */
article.intro {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 32px 36px;
}
article.intro h1 { margin-top: 0; font-size: 28px; }
article.intro h2 { font-size: 19px; margin-top: 28px; color: var(--accent); }
article.intro h3 { font-size: 15px; margin-top: 20px; color: var(--text); }
article.intro p { line-height: 1.7; color: var(--text-dim); }
article.intro ul, article.intro ol { line-height: 1.7; color: var(--text-dim); }
article.intro a.back { color: var(--accent); text-decoration: none; font-size: 13px; }
article.intro a.back:hover { text-decoration: underline; }
article.intro table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
  font-size: 13.5px;
}
article.intro th, article.intro td {
  text-align: left;
  padding: 8px 12px;
  border-bottom: 1px solid var(--line);
}
article.intro th { color: var(--text); font-weight: 600; }
article.intro td { color: var(--text-dim); }