:root {
            --bg-dark: #08090D;
            --bg-card: #12141C;
            --bg-light: #F8FAFC;
            --gradient-main: linear-gradient(135deg, #4F46E5 0%, #A855F7 100%);
            --text-white: #FFFFFF;
            --text-gray-light: #CBD5E1; 
            --text-dark: #1E293B;
            --text-dark-muted: #475569;
            --mint: #10B981;
            --gold: #F59E0B;
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        :focus-visible { outline: 2px solid #A855F7; outline-offset: 4px; border-radius: 4px; }
        body { font-family: 'Inter', -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif; background: var(--bg-dark); color: var(--text-white); line-height: 1.6; overflow-x: hidden; -webkit-font-smoothing: antialiased; }
        a { text-decoration: none; color: inherit; }
        ul, ol { list-style: none; }
        
        .container { max-width: 1280px; margin: 0 auto; padding: 0 32px; }
        .text-gradient { background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .bg-subtle { background: rgba(255, 255, 255, 0.03); }
        .pt-0 { padding-top: 0 !important; }
        
        .btn { padding: 14px 32px; border-radius: 8px; font-size: 16px; font-weight: 700; transition: all 0.3s ease; cursor: pointer; display: inline-block; text-align: center; border: none; }
        .btn-primary { background: var(--gradient-main); color: #fff; box-shadow: 0 4px 20px rgba(100, 80, 255, 0.4); }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 24px rgba(100, 80, 255, 0.6); }
        .btn-secondary { background: rgba(255,255,255,0.1); color: #fff; border: 1px solid rgba(255,255,255,0.2); }
        .btn-secondary:hover { background: rgba(255,255,255,0.15); border-color: rgba(255,255,255,0.4); }
        .btn-block { display: block; width: 100%; padding: 12px 0; font-size: 15px; border-radius: 8px; }
        .btn-outline-dark { background: transparent; color: var(--text-dark); border: 1px solid #E2E8F0; }
        .btn-outline-dark:hover { background: #F1F5F9; border-color: #CBD5E1; }

        /* 公用头部与底部样式 */
        .navbar { background: rgba(8, 9, 13, 0.95); backdrop-filter: blur(12px); position: sticky; top: 0; z-index: 100; border-bottom: 1px solid rgba(255,255,255,0.1); }
        .navbar::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 2px; background: var(--gradient-main); opacity: 0.8; }
        .nav-inner { display: flex; justify-content: space-between; align-items: center; height: 72px; position: relative; }
        .logo { display: flex; align-items: center; }
        .logo img { height: 32px; width: auto; object-fit: contain; }
        .nav-links { display: flex; gap: 32px; font-size: 15px; font-weight: 500; color: var(--text-gray-light); }
        .nav-links a:hover, .nav-links a.active { color: #fff; }
        .nav-right { display: flex; align-items: center; }
        .nav-btn { background: var(--gradient-main); color: #fff; padding: 8px 24px; border-radius: 6px; font-size: 14px; font-weight: 700; transition: all 0.3s; border: none; cursor: pointer; display: inline-block; }
        .nav-btn:hover { box-shadow: 0 0 15px rgba(100, 80, 255, 0.5); transform: translateY(-1px); }
        .menu-toggle { display: none; cursor: pointer; flex-direction: column; justify-content: space-between; width: 24px; height: 18px; z-index: 101; background: transparent; border: none; }
        .menu-toggle span { display: block; width: 100%; height: 2px; background-color: #fff; transition: all 0.3s ease; }
        .menu-toggle.active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
        .menu-toggle.active span:nth-child(2) { opacity: 0; }
        .menu-toggle.active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
        .mobile-only { display: none; }
        
        footer { background: #050508; padding: 40px 0; border-top: 1px solid rgba(255,255,255,0.1); text-align: center; color: var(--text-gray-light); font-size: 14px; }
        .footer-links { display: flex; justify-content: center; gap: 24px; margin-bottom: 20px; }
        .footer-links a { color: #fff; }
        .footer-links a:hover { color: #A855F7; }

        @media (max-width: 992px) {
            .menu-toggle { display: flex; }
            .nav-right { display: none; }
            .nav-links { position: absolute; top: 72px; left: 0; width: 100%; background: rgba(8, 9, 13, 0.98); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(255,255,255,0.1); flex-direction: column; align-items: center; gap: 0; padding: 20px 0; transform: translateY(-100%); opacity: 0; pointer-events: none; transition: all 0.3s ease; z-index: 99; }
            .nav-links.active { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .nav-links li { width: 100%; }
            .nav-links a { display: block; width: 100%; text-align: center; padding: 16px 0; font-size: 16px; color: #fff; }
            .nav-links a:hover, .nav-links a.active { background: rgba(255,255,255,0.1); }
            .mobile-only { display: block; margin-top: 10px; width: 80% !important; margin-left: auto; margin-right: auto; }
        }