:root {
            --redbull-red: #db0a40;
            --redbull-blue: #0e1e45;
            --redbull-yellow: #ffdd00;
            --redbull-light: #f8f9fa;
            --redbull-dark: #212529;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            color: var(--redbull-dark);
            overflow-x: hidden;
            line-height: 1.7;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            color: var(--redbull-blue);
        }
        .bg-redbull-blue {
            background-color: var(--redbull-blue) !important;
        }
        .bg-redbull-red {
            background-color: var(--redbull-red) !important;
        }
        .text-redbull-yellow {
            color: var(--redbull-yellow) !important;
        }
        .navbar-brand img {
            height: 40px;
            transition: transform 0.3s;
        }
        .navbar-brand img:hover {
            transform: scale(1.05);
        }
        .navbar-nav .nav-link {
            font-weight: 600;
            padding: 0.5rem 1.2rem !important;
            color: var(--redbull-blue);
            border-radius: 4px;
            transition: all 0.3s;
        }
        .navbar-nav .nav-link:hover, .navbar-nav .nav-link.active {
            background-color: var(--redbull-red);
            color: white !important;
        }
        .hero-section {
            background: linear-gradient(rgba(14, 30, 69, 0.85), rgba(219, 10, 64, 0.8)), url('https://images.unsplash.com/photo-1518611012118-696072aa579a?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') center/cover no-repeat;
            color: white;
            padding: 10rem 0;
        }
        .hero-title {
            font-size: 3.8rem;
            font-weight: 800;
            text-shadow: 2px 2px 8px rgba(0,0,0,0.5);
            margin-bottom: 1.5rem;
        }
        .btn-redbull {
            background-color: var(--redbull-red);
            color: white;
            padding: 0.8rem 2.2rem;
            font-weight: 700;
            border-radius: 50px;
            border: none;
            transition: all 0.3s;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .btn-redbull:hover {
            background-color: var(--redbull-yellow);
            color: var(--redbull-blue);
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.2);
        }
        .section-padding {
            padding: 6rem 0;
        }
        .section-title {
            position: relative;
            margin-bottom: 3.5rem;
            padding-bottom: 1rem;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background-color: var(--redbull-red);
        }
        .card-product {
            border: none;
            border-radius: 12px;
            overflow: hidden;
            transition: transform 0.4s, box-shadow 0.4s;
            height: 100%;
        }
        .card-product:hover {
            transform: translateY(-15px);
            box-shadow: 0 20px 30px rgba(0,0,0,0.15);
        }
        .card-product img {
            height: 250px;
            object-fit: cover;
            transition: transform 0.5s;
        }
        .card-product:hover img {
            transform: scale(1.05);
        }
        .card-product .card-body {
            padding: 1.8rem;
        }
        .icon-feature {
            font-size: 3rem;
            color: var(--redbull-red);
            margin-bottom: 1.5rem;
        }
        .event-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0,0,0,0.08);
            height: 100%;
            transition: transform 0.3s;
        }
        .event-card:hover {
            transform: scale(1.03);
        }
        .event-date {
            background-color: var(--redbull-blue);
            color: white;
            padding: 1rem;
            text-align: center;
            font-weight: bold;
            font-size: 1.2rem;
        }
        .flink {
            display: inline-block;
            background-color: #f1f3f5;
            color: var(--redbull-blue);
            padding: 0.6rem 1.5rem;
            margin: 0.5rem;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s;
            border: 1px solid #dee2e6;
        }
        .flink:hover {
            background-color: var(--redbull-red);
            color: white;
            transform: translateY(-3px);
            border-color: var(--redbull-red);
        }
        footer a {
            color: #adb5bd;
            text-decoration: none;
            transition: color 0.3s;
        }
        footer a:hover {
            color: var(--redbull-yellow);
        }
        .social-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background-color: rgba(255,255,255,0.1);
            border-radius: 50%;
            margin-right: 0.8rem;
            transition: all 0.3s;
        }
        .social-icon:hover {
            background-color: var(--redbull-red);
            transform: rotate(15deg);
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background-color: var(--redbull-red);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.4s;
        }
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background-color: var(--redbull-blue);
            color: var(--redbull-yellow);
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.5rem;
            }
            .section-padding {
                padding: 3rem 0;
            }
            .navbar-nav .nav-link {
                padding: 0.5rem 1rem !important;
                text-align: center;
            }
        }