* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: "League Spartan", sans-serif;
            background-color: #f5f5f5;
        }

        
        header {
            background-color: #3a3a3a;
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }

        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 40px;
            height: 60px;
        }

       
        .logo img {
            height: 40px;
            width: auto;
        }

        
        .hamburger {
            display: none;
            align-items: center;
            gap: 8px;
            cursor: pointer;
            padding: 5px 10px;
            background-color: transparent;
            border: none;
        }

        .hamburger-icon {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .hamburger-icon span {
            width: 22px;
            height: 2px;
            background-color: white;
            transition: 0.3s;
            border-radius: 2px;
        }

       
        .hamburger.active .hamburger-icon span:nth-child(1) {
            transform: rotate(-45deg) translate(-5px, 5px);
        }

        .hamburger.active .hamburger-icon span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active .hamburger-icon span:nth-child(3) {
            transform: rotate(45deg) translate(-5px, -5px);
        }

        
        .nav-center {
            display: flex;
            gap: 45px;
            list-style: none;
        }

        .nav-center li {
            position: relative;
        }

        .nav-center li a {
            color: white;
            text-decoration: none;
            font-size: 15px;
            font-weight: 500;
            transition: color 0.3s ease;
            position: relative;
            cursor: pointer;
        }

        .nav-center li a:hover {
            color: #e0e0e0;
        }

        .nav-center li a::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: white;
            transition: width 0.3s ease;
        }

        .nav-center li a:hover::after {
            width: 100%;
        }

        
        .dropdown-menu {
            position: absolute;
            top: 100%;
            left: 0;
            background-color: #2d2d2d;
            min-width: 200px;
            box-shadow: 0 8px 16px rgba(0,0,0,0.3);
            border-radius: 0 0 8px 8px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-10px);
            transition: all 0.3s ease;
            margin-top: 20px;
            z-index: 1000;
        }

        .nav-center li:hover .dropdown-menu {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .dropdown-menu a {
            display: block;
            padding: 12px 20px;
            color: white;
            text-decoration: none;
            font-size: 14px;
            font-weight: 400;
            transition: background-color 0.3s ease, padding-left 0.3s ease;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }

        .dropdown-menu a:last-child {
            border-bottom: none;
            border-radius: 0 0 8px 8px;
        }

        .dropdown-menu a:hover {
            background-color: #404040;
            padding-left: 25px;
        }

        .dropdown-menu a::after {
            display: none;
        }

        
        .nav-right {
            display: flex;
            gap: 35px;
            align-items: center;
        }

        .nav-right a {
            color: white;
            text-decoration: none;
            font-size: 15px;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: color 0.3s ease;
        }

        .nav-right a:hover {
            color: #e0e0e0;
        }

        
        .hero-banner {
           
            background-image: url('../../Speed/byd.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            background-color: #d4e4f7;
            min-height: 900px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }

       
        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            z-index: 10;
        }

        .cta-btn {
            padding: 14px 40px;
            border-radius: 30px;
            font-size: 13px;
            font-weight: bold;
            text-transform: uppercase;
            letter-spacing: 1px;
            cursor: pointer;
            border: none;
            transition: all 0.3s ease;
        }

        .cta-btn-primary {
            background-color: #3a3a3a;
            color: white;
        }

        .cta-btn-primary:hover {
            background-color: #2a2a2a;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.3);
        }

        .cta-btn-secondary {
            background-color: #4d4d4d;
            color: white;
        }

        .cta-btn-secondary:hover {
            background-color: #3d3d3d;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.3);
        }

       
        .earth-section {
            
            background-image: url('../../Speed/byd-banner.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            background-color: #0a0a0a;
            height: 450px;
            width:100%;
            padding: 100px 50px;
            text-align: center;
            position: relative;
            color: white;
        }

        .earth-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, rgba(0,20,40,0.7) 0%, rgba(10,30,50,0.5) 50%, rgba(0,0,0,0.8) 100%);
        }

        .earth-content {
            position: relative;
            z-index: 1;
        }

        .earth-section h2 {
            font-size: 52px;
            font-weight: 300;
            margin-bottom: 20px;
            letter-spacing: 2px;
        }

        .earth-section p {
            font-size: 22px;
            font-weight: 300;
            letter-spacing: 1px;
        }

        
        .contact-section {
            background-color: #f5f5f5;
            padding: 40px 50px;
            text-align: center;
           
        }

        .contact-info {
            max-width: 1400px;
            margin: 0 auto;
        }

        .contact-info p {
            font-size: 18px;
            color: #333;
            margin-bottom: 10px;
            line-height: 1.6;
        }

        .contact-info strong {
            font-weight: bold;
        }

        
        .footer {
            background-color: #f5f5f5;
            padding: 30px 50px 20px;
        }

        .footer-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1400px;
            margin: 0 auto;
            padding-bottom: 25px;
            border-bottom: 1px solid #ddd;
        }

        .footer-links {
            display: flex;
            gap: 35px;
            list-style: none;
        }

        .footer-links a {
            color: #333;
            text-decoration: none;
            font-size: 15px;
            font-weight: 500;
            transition: color 0.3s ease;
        }

        .footer-links a:hover {
            color: #0066cc;
        }

        .social-section {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .social-section span {
            font-size: 15px;
            font-weight: 600;
            color: #333;
        }

        .social-icons {
            display: flex;
            gap: 15px;
        }

        .social-icon {
            width: 38px;
            height: 38px;
            border: 2px solid #333;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            color: #333;
            font-size: 18px;
            transition: all 0.3s ease;
        }

        .social-icon:hover {
            background-color: #333;
            color: white;
            transform: translateY(-3px);
        }

        .footer-bottom {
            text-align: center;
            max-width: 1400px;
            margin: 0 auto;
            padding-top: 20px;
        }

        .footer-bottom p {
            font-size: 14px;
            color: #666;
            margin-bottom: 8px;
        }

        .footer-bottom a {
            color: #666;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footer-bottom a:hover {
            color: #333;
            text-decoration: underline;
        }

        @media (max-width: 1024px) {
            .nav-center {
                gap: 30px;
            }

            .nav-right {
                gap: 25px;
            }

            .navbar {
                padding: 0 25px;
            }
        }

       
        @media (max-width: 768px) {
            
            .hamburger {
                display: flex;
                order: 4; 
            }

            .navbar {
                padding: 12px 20px;
                height: auto;
                position: relative;
            }

            .logo {
                order: 1;
            }

            .logo img {
                height: 30px;
            }

           
            .nav-right {
                order: 2;
                gap: 12px;
                flex: 1;
                justify-content: flex-end;
                margin-right: 12px;
            }

            .nav-right a {
                font-size: 12px;
                display: flex;
                align-items: center;
                gap: 5px;
            }

            .nav-right a span {
                display: inline;
            }

            
            .nav-right a:first-child::before {
                content: '';
                font-size: 14px;
            }

            .nav-right a:last-child::before {
                content: '';
                font-size: 14px;
            }

          
            .nav-center {
                position: fixed;
                top: 0;
                left: -100%;
                width: 85%;
                max-width: 320px;
                height: 100vh;
                background-color: #2d2d2d;
                flex-direction: column;
                gap: 0;
                padding: 80px 0 20px 0;
                transition: left 0.3s ease;
                overflow-y: auto;
                box-shadow: 2px 0 15px rgba(0,0,0,0.5);
                z-index: 9999;
            }

            .nav-center.active {
                left: 0;
            }

            .nav-center li {
                width: 100%;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }

            .nav-center li a {
                display: block;
                padding: 16px 25px;
                font-size: 15px;
                font-weight: 500;
            }

            .nav-center li a::after {
                display: none;
            }

            
            .dropdown-menu {
                position: static;
                opacity: 1;
                visibility: visible;
                transform: none;
                margin: 0;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.3s ease;
                box-shadow: none;
                border-radius: 0;
            }

            .nav-center li:hover .dropdown-menu {
                max-height: none;
            }

            .nav-center li.dropdown-active .dropdown-menu {
                max-height: 500px;
            }

            .dropdown-menu a {
                padding: 14px 40px;
                font-size: 14px;
                background-color: #1a1a1a;
            }

            .dropdown-menu a:hover {
                padding-left: 45px;
                background-color: #252525;
            }

            
            .nav-center::before {
                content: '×';
                position: absolute;
                top: 15px;
                right: 20px;
                font-size: 40px;
                color: white;
                cursor: pointer;
                z-index: 10000;
            }

            
            .hero-banner {
               
                background-image: url('../../Speed/BYD-POSTER.webp');
                min-height: 500px;
                padding: 20px;
            }

            .cta-buttons {
                flex-direction: column;
                align-items: center;
                gap: 15px;
            }

            .cta-btn {
                width: 90%;
                max-width: 280px;
                padding: 12px 30px;
                font-size: 12px;
            }

          
            .earth-section {
               
                background-image: url('../../Speed/BYD-POSTER-1.webp');
                height: 350px;
               
                padding: 60px 30px;
            }

            .earth-section h2 {
                font-size: 28px;
                line-height: 1.3;
            }

            .earth-section p {
                font-size: 16px;
            }

          
            .contact-section {
                padding: 30px 20px;
                
            }

            .contact-info p {
                font-size: 13px;
                line-height: 1.8;
            }

           
            .footer {
                padding: 25px 20px 15px;
            }

            .footer-top {
                flex-direction: column;
                gap: 25px;
                padding-bottom: 20px;
            }

            .footer-links {
                flex-wrap: wrap;
                justify-content: center;
                gap: 15px;
            }

            .footer-links a {
                font-size: 13px;
            }

            .social-section {
                flex-direction: column;
                gap: 15px;
            }

            .social-icon {
                width: 36px;
                height: 36px;
                font-size: 16px;
            }

            .footer-bottom p {
                font-size: 13px;
            }
        }

        
        @media (max-width: 480px) {
            .navbar {
                padding: 12px 15px;
            }

            .logo img {
                height: 35px;
            }

            .nav-center {
                width: 85%;
            }

            .nav-right a {
                font-size: 12px;
            }

            
            .hero-banner {
                min-height: 400px;
                padding: 15px;
            }

            .cta-btn {
                width: 100%;
                max-width: 250px;
                padding: 12px 25px;
                font-size: 11px;
            }

            
            .earth-section {
                height: 250px;
                padding: 40px 20px;
            }

            .earth-section h2 {
                font-size: 22px;
                line-height: 1.4;
                margin-bottom: 15px;
            }

            .earth-section p {
                font-size: 14px;
            }

           
            .contact-section {
                padding: 25px 15px;
              
            }

            .contact-info p {
                font-size: 11px;
                line-height: 1.7;
                margin-bottom: 12px;
            }

           
            .footer {
                padding: 20px 15px 12px;
            }

            .footer-top {
                gap: 20px;
                padding-bottom: 15px;
            }

            .footer-links {
                gap: 12px;
            }

            .footer-links a {
                font-size: 12px;
            }

            .social-section span {
                font-size: 14px;
            }

            .social-icon {
                width: 34px;
                height: 34px;
                font-size: 15px;
            }

            .social-icons {
                gap: 12px;
            }

            .footer-bottom {
                padding-top: 15px;
            }

            .footer-bottom p {
                font-size: 11px;
                margin-bottom: 6px;
            }
        }