:root {
            --primary-color: #1e3a8a;
            --secondary-color: #dc2626;
            --accent-color: #f59e0b;
            --dark-color: #0f172a;
            --light-color: #f8fafc;
            --text-color: #334155;
            --border-radius: 8px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: var(--text-color);
            line-height: 1.6;
            overflow-x: hidden;
            background-color: #f1f5f9;
        }
        .navbar-custom {
            background: linear-gradient(135deg, var(--dark-color) 0%, var(--primary-color) 100%);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            padding: 0.8rem 0;
            transition: var(--transition);
        }
        .navbar-custom .navbar-brand {
            font-weight: 700;
            font-size: 1.5rem;
            color: white;
            display: flex;
            align-items: center;
        }
        .navbar-custom .navbar-brand i {
            color: var(--accent-color);
            margin-right: 10px;
        }
        .navbar-custom .nav-link {
            color: rgba(255, 255, 255, 0.9);
            font-weight: 500;
            margin: 0 8px;
            padding: 8px 16px !important;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .navbar-custom .nav-link:hover,
        .navbar-custom .nav-link.active {
            background-color: rgba(255, 255, 255, 0.15);
            color: white;
            transform: translateY(-2px);
        }
        .hero-section {
            background: linear-gradient(rgba(15, 23, 42, 0.85), rgba(30, 58, 138, 0.9)), 
                        url('https://images.unsplash.com/photo-1575361204480-aadea25e6e68?ixlib=rb-4.0.3&auto=format&fit=crop&w=2071&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 100px 0;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, transparent 20%, rgba(0, 0, 0, 0.2) 70%);
            top: -50%;
            left: -50%;
            animation: pulse 15s infinite alternate;
        }
        @keyframes pulse {
            0% { transform: scale(0.95); opacity: 0.5; }
            100% { transform: scale(1.05); opacity: 0.8; }
        }
        .hero-title {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
        }
        .hero-subtitle {
            font-size: 1.3rem;
            margin-bottom: 2rem;
            opacity: 0.9;
        }
        .cta-button {
            background: linear-gradient(to right, var(--secondary-color), var(--accent-color));
            color: white;
            border: none;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.1rem;
            transition: var(--transition);
            box-shadow: 0 6px 20px rgba(220, 38, 38, 0.3);
        }
        .cta-button:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(220, 38, 38, 0.4);
        }
        .feature-card {
            background: white;
            border-radius: var(--border-radius);
            padding: 2rem;
            height: 100%;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: var(--transition);
            border-top: 4px solid transparent;
            display: flex;
            flex-direction: column;
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
            border-top-color: var(--secondary-color);
        }
        .feature-icon {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            background: linear-gradient(135deg, #e0f2fe 0%, #dbeafe 100%);
            width: 70px;
            height: 70px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .feature-card h3 {
            color: var(--dark-color);
            margin-bottom: 1rem;
            font-weight: 700;
        }
        .prediction-section {
            background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
            padding: 80px 0;
        }
        .match-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            transition: var(--transition);
        }
        .match-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
        }
        .team-logo {
            width: 80px;
            height: 80px;
            object-fit: contain;
            filter: drop-shadow(0 4px 8px rgba(0,0,0,0.2));
        }
        .vs-badge {
            background: var(--accent-color);
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
        }
        .prediction-result {
            background: linear-gradient(to right, var(--primary-color), #1e40af);
            color: white;
            padding: 15px;
            border-radius: 0 0 12px 12px;
        }
        .progress-custom {
            height: 10px;
            border-radius: 5px;
            background-color: #e2e8f0;
            overflow: hidden;
        }
        .progress-custom .progress-bar {
            background: linear-gradient(to right, #10b981, #3b82f6);
        }
        .live-badge {
            background: var(--secondary-color);
            color: white;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            animation: pulse-red 2s infinite;
        }
        @keyframes pulse-red {
            0% { box-shadow: 0 0 0 0 rgba(220, 38, 38, 0.7); }
            70% { box-shadow: 0 0 0 10px rgba(220, 38, 38, 0); }
            100% { box-shadow: 0 0 0 0 rgba(220, 38, 38, 0); }
        }
        .score-card {
            background: white;
            border-left: 4px solid var(--secondary-color);
            padding: 1rem;
            margin-bottom: 1rem;
            border-radius: var(--border-radius);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
        }
        .score-card:hover {
            background: #fef2f2;
            transform: translateX(5px);
        }
        .friendlink {
            background: var(--light-color);
            padding: 60px 0;
        }
        .flink {
            display: inline-flex;
            align-items: center;
            background: white;
            padding: 12px 24px;
            border-radius: var(--border-radius);
            margin: 8px;
            color: var(--dark-color);
            text-decoration: none;
            font-weight: 500;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            transition: var(--transition);
            border: 1px solid #e2e8f0;
        }
        .flink:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
            color: var(--primary-color);
            border-color: var(--primary-color);
        }
        .flink i {
            margin-right: 10px;
            font-size: 1.2rem;
        }
        .footer {
            background: var(--dark-color);
            color: white;
            padding: 60px 0 30px;
        }
        .footer h5 {
            color: white;
            margin-bottom: 1.5rem;
            font-weight: 600;
        }
        .footer a {
            color: #cbd5e1;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer a:hover {
            color: white;
            padding-left: 5px;
        }
        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 20px;
            margin-top: 40px;
            font-size: 0.9rem;
            color: #94a3b8;
        }
        @media (max-width: 992px) {
            .hero-title {
                font-size: 2.8rem;
            }
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.2rem;
            }
            .hero-section {
                padding: 70px 0;
            }
        }
        @media (max-width: 576px) {
            .hero-title {
                font-size: 1.8rem;
            }
            .navbar-custom .navbar-brand {
                font-size: 1.2rem;
            }
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 50px;
            text-align: center;
            font-weight: 800;
            color: var(--dark-color);
        }
        .section-title::after {
            content: '';
            position: absolute;
            width: 80px;
            height: 4px;
            background: linear-gradient(to right, var(--secondary-color), var(--accent-color));
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            border-radius: 2px;
        }
        .text-gradient {
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }