/* 子站壳页样式（托管在主站，子站 HTML 引用） */
:root {
  --sat-bg: #f1f5f9;
  --sat-ink: #0f172a;
  --sat-muted: #64748b;
  --sat-line: #e2e8f0;
  --sat-card: #ffffff;
  --sat-accent: #0f766e;
  --sat-accent-2: #115e59;
  --sat-soft: #ecfdf5;
}

body.site-satellite {
  font-family: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(1200px 500px at 10% -10%, #ccfbf1 0%, transparent 55%),
    radial-gradient(900px 400px at 100% 0%, #e0f2fe 0%, transparent 50%),
    var(--sat-bg);
  color: var(--sat-ink);
  line-height: 1.65;
  min-height: 100vh;
  margin: 0;
}

body.site-satellite a {
  color: inherit;
  text-decoration: none;
}

.sat-wrap {
  width: min(1040px, calc(100% - 32px));
  margin: 0 auto;
}

.sat-topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.86);
  border-bottom: 1px solid var(--sat-line);
}

.sat-topbar .sat-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 58px;
  gap: 16px;
}

.sat-logo {
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.02em;
}

.sat-logo span {
  color: var(--sat-accent);
}

.sat-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  font-size: 14px;
}

.sat-nav a {
  color: var(--sat-muted);
}

.sat-nav a.active,
.sat-nav a:hover {
  color: var(--sat-accent-2);
}

.sat-hero {
  padding: 48px 0 20px;
}

.sat-eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--sat-accent);
  font-weight: 700;
  margin-bottom: 10px;
}

.sat-hero h1 {
  font-size: clamp(28px, 5vw, 42px);
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin: 0 0 12px;
}

.sat-lead {
  max-width: 36em;
  color: var(--sat-muted);
  font-size: 16px;
  margin: 0;
}

.sat-block {
  background: var(--sat-card);
  border: 1px solid var(--sat-line);
  border-radius: 16px;
  padding: 22px;
  margin: 18px 0;
}

.sat-block h2 {
  font-size: 18px;
  margin: 0 0 6px;
}

.sat-hint {
  color: var(--sat-muted);
  font-size: 13px;
  margin: 0 0 16px;
}

.sat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}

.sat-tile {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px;
  border-radius: 12px;
  border: 1px solid var(--sat-line);
  background: #fff;
  transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}

.sat-tile:hover {
  border-color: #99f6e4;
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(15, 118, 110, 0.08);
  text-decoration: none;
}

.sat-tile strong {
  font-size: 15px;
}

.sat-tile span {
  font-size: 12px;
  color: var(--sat-muted);
}

.sat-tile.soft {
  background: var(--sat-soft);
  border-color: #a7f3d0;
}

.sat-foot {
  margin-top: 40px;
  padding: 28px 0 40px;
  border-top: 1px solid var(--sat-line);
  color: var(--sat-muted);
  font-size: 13px;
}

.sat-foot p {
  margin: 0 0 8px;
}

@media (max-width: 640px) {
  .sat-hero {
    padding-top: 28px;
  }
  .sat-nav {
    font-size: 13px;
  }
}