:root {
  --font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  --fs-base: 16px;
  --fs-h1: 2rem;
  --fs-h2: 1.5rem;
  --fs-stat: 2rem;
  --color-primary: #059669;
  --color-accent: #D97706;
  --color-bg: #F0FDF4;
  --color-bg-card: #FFFFFF;
  --color-text: #1F2937;
  --color-text-secondary: #6B7280;
  --color-border: #D1FAE5;
  --theme-shadow: 0 4px 20px rgba(0,0,0,0.06);
  --safe-area-bottom: env(safe-area-inset-bottom, 0px);
  --contact-footer-h: 72px;
  --bottom-nav-h: 44px;
}

[data-theme="community"] { --color-primary: #059669; --color-accent: #D97706; --color-bg: #F0FDF4; }
[data-theme="eco"] { --color-primary: #16A34A; --color-accent: #84CC16; --color-bg: #ECFDF5; }
[data-theme="education"] { --color-primary: #2563EB; --color-accent: #F59E0B; --color-bg: #EFF6FF; }
[data-theme="health"] { --color-primary: #DC2626; --color-accent: #F97316; --color-bg: #FEF2F2; }
[data-theme="youth"] { --color-primary: #7C3AED; --color-accent: #EC4899; --color-bg: #F5F3FF; }
[data-theme="premium"] { --color-primary: #1E293B; --color-accent: #D97706; --color-bg: #F8FAFC; }

[data-font="large"] { --fs-base: 20px; --fs-h1: 2.25rem; }
[data-font="xlarge"] { --fs-base: 24px; --fs-h1: 2.5rem; }