:root {
    --brand-blue: #3b82f6;
    --brand-blue-light: #60a5fa;
    --brand-green: #10b981;
    --brand-green-light: #34d399;
    --brand-gradient: linear-gradient(135deg, #3b82f6 0%, #10b981 100%);
    --brand-gradient-soft: linear-gradient(135deg, rgba(59,130,246,0.08) 0%, rgba(16,185,129,0.08) 100%);

    --text-main: #0f172a;
    --text-sub: #64748b;
    --text-muted: #94a3b8;
    --bg-page: #fafbfc;
    --bg-white: #ffffff;
    --bg-subtle: #f1f5f9;
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;

    --shadow-xs: 0 1px 2px rgba(15,23,42,0.04);
    --shadow-sm: 0 2px 8px rgba(15,23,42,0.06);
    --shadow-md: 0 8px 24px rgba(15,23,42,0.08);
    --shadow-lg: 0 16px 48px rgba(15,23,42,0.1);
    --shadow-hover: 0 20px 40px rgba(59,130,246,0.12);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    --header-height: 72px;
    --container-max: 1200px;
    --section-pad: clamp(64px, 8vw, 96px);

    --font-sans: 'Plus Jakarta Sans', 'Noto Sans TC', -apple-system, sans-serif;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}