:root {
  --color-primary: #6366f1;
  --color-primary-hover: #818cf8;
  --color-primary-light: rgba(99, 102, 241, 0.16);
  --color-primary-muted: rgba(99, 102, 241, 0.32);

  --color-accent: #22d3ee;
  --color-accent-muted: rgba(34, 211, 238, 0.16);
  --color-green: #34d399;
  --color-green-muted: rgba(52, 211, 153, 0.16);

  /* 深灰紫第二档：更接近客户端设置页 */
  --color-bg: #1e2232;
  --color-bg-deep: #181b28;
  --color-bg-elevated: #282e3f;
  --color-bg-glass: rgba(255, 255, 255, 0.08);
  --color-border: rgba(255, 255, 255, 0.12);
  --color-border-strong: rgba(255, 255, 255, 0.2);

  --color-text: #f2f4f8;
  --color-text-secondary: #c2c9dc;
  --color-text-muted: #939bb3;

  --color-success: #34d399;
  --color-success-bg: rgba(52, 211, 153, 0.16);
  --color-error: #f87171;
  --color-error-bg: rgba(248, 113, 113, 0.16);

  --gradient-brand: linear-gradient(120deg, #6366f1 0%, #8b5cf6 50%, #22d3ee 100%);
  --gradient-text: linear-gradient(135deg, #f2f4f8 20%, #a5b4fc 55%, #22d3ee 100%);
  --gradient-border: linear-gradient(135deg, rgba(99, 102, 241, 0.5), rgba(34, 211, 238, 0.32));

  --glow-primary: 0 0 24px rgba(99, 102, 241, 0.22);
  --glow-accent: 0 0 18px rgba(34, 211, 238, 0.16);
  --glow-green: 0 0 18px rgba(52, 211, 153, 0.16);

  --font-sans: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-pill: 999px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.12);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.16);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.2);

  --content-max: 1120px;
  --page-x: clamp(1.25rem, 4vw, 2rem);
  --header-h: 64px;

  --transition: 0.2s ease;
  --transition-fast: 0.15s ease;
  --transition-slow: 0.35s ease;

  --motion-duration: 0.55s;
  --motion-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --motion-stagger: 70ms;
}