:root {
  --bg-primary: #081526;
  --bg-secondary: #102742;
  --surface-strong: rgba(10, 24, 43, 0.8);
  --surface-soft: rgba(255, 255, 255, 0.1);
  --surface-card: rgba(255, 255, 255, 0.12);
  --line-soft: rgba(255, 255, 255, 0.14);
  --text-primary: #f3f7fc;
  --text-secondary: rgba(243, 247, 252, 0.76);
  --text-muted: rgba(243, 247, 252, 0.56);
  --accent: #6db6ff;
  --accent-strong: #99ceff;
  --shadow-soft: 0 18px 50px rgba(0, 0, 0, 0.18);
  --shadow-card: 0 20px 40px rgba(8, 21, 38, 0.22);
  --radius-large: 28px;
  --radius-medium: 20px;
  --radius-small: 14px;
  --drawer-width: 286px;
  --transition-base: 0.3s ease;
  --font-sans: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

body {
  font-family: var(--font-sans);
  color: var(--text-primary);
  background:
    radial-gradient(circle at top right, rgba(109, 182, 255, 0.22), transparent 28%),
    linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.09);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--accent-strong);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.ghost-button {
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  transition:
    transform var(--transition-base),
    background var(--transition-base),
    border-color var(--transition-base);
}

.ghost-button:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(153, 206, 255, 0.38);
}