:root {
  --rf-color-brand: #ff8f1c;
  --rf-color-brand-hover: #e97800;
  --rf-color-brand-soft: rgba(255, 143, 28, 0.12);
  --rf-color-page: #ffffff;
  --rf-color-surface: #ffffff;
  --rf-color-surface-muted: #f2f2f2;
  --rf-color-surface-dark: #252525;
  --rf-color-dark: #2f2e2e;
  --rf-color-footer: #303030;
  --rf-color-video: #191919;
  --rf-color-text: #2f2e2e;
  --rf-color-text-secondary: #605e5e;
  --rf-color-text-muted: #8b8a8a;
  --rf-color-text-inverse: #ffffff;
  --rf-color-border: rgba(47, 46, 46, 0.16);
  --rf-color-border-strong: rgba(47, 46, 46, 0.34);
  --rf-color-overlay: rgba(0, 0, 0, 0.38);
  --rf-color-focus: rgba(255, 143, 28, 0.38);
  --rf-font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --rf-font-size-body: 16px;
  --rf-font-size-small: 14px;
  --rf-font-size-eyebrow: 12px;
  --rf-font-size-h1: clamp(2.5rem, 4.3vw, 3.75rem);
  --rf-font-size-h2: clamp(2rem, 3.2vw, 2.625rem);
  --rf-font-size-h3: 1.25rem;
  --rf-line-height-body: 1.72;
  --rf-line-height-heading: 1.16;
  --rf-container-brand: 1080px;
  --rf-container-wide: 1180px;
  --rf-page-gutter: 32px;
  --rf-section-space: clamp(5.5rem, 8.5vw, 8rem);
  --rf-space-1: 4px;
  --rf-space-2: 8px;
  --rf-space-3: 12px;
  --rf-space-4: 16px;
  --rf-space-5: 24px;
  --rf-space-6: 32px;
  --rf-space-7: 48px;
  --rf-space-8: 64px;
  --rf-header-height: 69px;
  --rf-radius-small: 4px;
  --rf-radius-card: 12px;
  --rf-radius-button: 22px;
  --rf-radius-pill: 999px;
  --rf-shadow-focus: 0 0 0 3px var(--rf-color-focus);
  --rf-shadow-card: 0 18px 46px rgba(0, 0, 0, 0.1);
  --rf-motion-fast: 180ms;
  --rf-motion-normal: 280ms;
  --rf-motion-slow: 420ms;
  --rf-ease-standard: cubic-bezier(0.2, 0, 0, 1);
}