/* roulang page: index */
:root {
            --bg-deep: #070B19;
            --bg-section: #0B132B;
            --primary-blue: #1C64F2;
            --cyan-accent: #00F2FE;
            --sport-green: #10B981;
            --text-main: #FFFFFF;
            --text-sub: #94A3B8;
        }

        body {
            background-color: var(--bg-deep);
            color: var(--text-main);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            overflow-x: hidden;
        }

        .glass-card {
            background: rgba(15, 23, 42, 0.7);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .glass-card:hover {
            border-color: rgba(0, 242, 254, 0.35);
            box-shadow: 0 12px 30px -10px rgba(0, 242, 254, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.2);
            transform: translateY(-3px);
        }

        .glow-btn {
            background: linear-gradient(135deg, #1C64F2 0%, #00F2FE 100%);
            box-shadow: 0 0 20px rgba(0, 242, 254, 0.35);
            transition: all 0.25s ease;
        }

        .glow-btn:hover {
            box-shadow: 0 0 32px rgba(0, 242, 254, 0.65);
            transform: translateY(-2px);
        }

        .glow-btn:active {
            transform: translateY(0);
        }

        .glow-border-alert {
            border: 1px solid rgba(245, 158, 11, 0.35);
            box-shadow: 0 0 15px rgba(245, 158, 11, 0.08);
        }

        .glow-border-alert:hover {
            border-color: rgba(245, 158, 11, 0.75);
            box-shadow: 0 0 25px rgba(245, 158, 11, 0.2);
        }

        .pulse-beacon {
            position: relative;
        }

        .pulse-beacon::after {
            content: '';
            position: absolute;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            background-color: inherit;
            border-radius: inherit;
            animation: pulse-ring 2s cubic-bezier(0.24, 0, 0.38, 1) infinite;
        }

        @keyframes pulse-ring {
            0% { transform: scale(0.95); opacity: 0.8; }
            50% { transform: scale(1.8); opacity: 0; }
            100% { transform: scale(1.8); opacity: 0; }
        }

        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease-out, opacity 0.3s ease;
            opacity: 0;
        }

        .faq-content.open {
            max-height: 250px;
            opacity: 1;
        }