/* ===== CSS 变量 ===== */
:root {
    --primary: #4f46e5;
    --primary-light: #6366f1;
    --secondary: #7c3aed;
    --accent: #06b6d4;
    --accent-light: #22d3ee;
    --dark: #0c0e1a;
    --darker: #060810;
    --surface: #111427;
    --card: #151a30;
    --light: #f1f5f9;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --success: #10b981;
    --gradient-main: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #a855f7 100%);
    --gradient-accent: linear-gradient(135deg, #4f46e5 0%, #06b6d4 100%);
    --gradient-hero: linear-gradient(160deg, #060810 0%, #0c0e1a 40%, #111427 70%, #0a0e25 100%);
    --shadow-glow: 0 0 40px rgba(79, 70, 229, 0.15);
}