/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #ffffff;
    background: #0f0f0f;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(15, 15, 15, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
    width: 100%;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-image {
    width: 40px;
    height: 40px;
    object-fit: contain;
    border-radius: 8px;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.nav-logo h2 {
    color: #00ff88;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 2px;
}

.nav-logo span {
    color: #888;
    font-size: 12px;
    font-weight: 400;
    letter-spacing: 1px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-link {
    text-decoration: none;
    color: #ffffff;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    padding: 10px 0;
}

.nav-link:hover,
.nav-link.active {
    color: #00ff88;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #00ff88, #00cc6a);
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: #ffffff;
    margin: 3px 0;
    transition: 0.3s;
}

/* Breadcrumb */
.breadcrumb {
    padding: 120px 0 40px;
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.breadcrumb-content {
    display: flex;
    align-items: center;
}

.breadcrumb-nav {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
}

.breadcrumb-link {
    color: #b0b0b0;
    text-decoration: none;
    transition: color 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.breadcrumb-link:hover {
    color: #00ff88;
}

.breadcrumb-nav i {
    font-size: 12px;
    color: #666;
}

.breadcrumb-current {
    color: #00ff88;
    font-weight: 500;
}

/* Hero Section */
.hero {
    padding: 80px 0;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #0f0f0f 0%, #1a1a1a 50%, #0f0f0f 100%);
    min-height: 60vh;
    display: flex;
    align-items: center;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.floating-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(45deg, rgba(0, 255, 136, 0.1), rgba(0, 204, 106, 0.05));
    animation: float 6s ease-in-out infinite;
}

.shape-1 {
    width: 200px;
    height: 200px;
    top: 20%;
    right: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 150px;
    height: 150px;
    bottom: 20%;
    left: 5%;
    animation-delay: 2s;
}

.shape-3 {
    width: 100px;
    height: 100px;
    top: 60%;
    left: 50%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    z-index: 1;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 24px;
    line-height: 1.2;
}

.title-line {
    display: block;
    background: linear-gradient(135deg, #ffffff 0%, #00ff88 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: #b0b0b0;
    margin-bottom: 40px;
    line-height: 1.8;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 40px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: #00ff88;
    margin-bottom: 8px;
}

.stat-label {
    color: #b0b0b0;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #ffffff 0%, #00ff88 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.1rem;
    color: #b0b0b0;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Categories Section */
.categories-section {
    padding: 120px 0;
    background: rgba(255, 255, 255, 0.02);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    width: 100%;
}

.category-card {
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 40px;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
}

.category-card:hover {
    transform: translateY(-10px);
    border-color: #00ff88;
    box-shadow: 0 20px 40px rgba(0, 255, 136, 0.15);
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 136, 0.1), transparent);
    transition: left 0.5s ease;
}

.category-card:hover::before {
    left: 100%;
}

.category-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.05), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none; /* 添加这行，确保overlay不会阻止点击事件 */
    z-index: 1; /* 确保层级低于内容 */
}

.category-card:hover .category-overlay {
    opacity: 1;
}

.category-content {
    position: relative;
    z-index: 2; /* 确保内容在overlay之上 */
}

.category-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #00ff88, #00cc6a);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    transition: all 0.3s ease;
}

.category-card:hover .category-icon {
    transform: scale(1.1);
}

.category-icon i {
    font-size: 40px;
    color: #000000;
}

.category-content h3 {
    font-size: 1.5rem;
    color: #ffffff;
    margin-bottom: 12px;
    font-weight: 600;
}

.category-content p {
    color: #b0b0b0;
    margin-bottom: 20px;
    line-height: 1.6;
}

.category-list {
    list-style: none;
    margin-bottom: 24px;
}

.category-list li {
    color: #cccccc;
    margin-bottom: 8px;
    padding-left: 20px;
    position: relative;
    font-size: 0.9rem;
}

.category-list li::before {
    content: '•';
    color: #00ff88;
    position: absolute;
    left: 0;
    font-weight: bold;
}

.category-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #00ff88;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    margin-top: 20px;
    position: relative;
    z-index: 3; /* 确保链接在最上层 */
}

.category-link:hover {
    transform: translateX(5px);
}

.category-link i {
    transition: transform 0.3s ease;
}

.category-link:hover i {
    transform: translateX(3px);
}

/* Engine Parts Special Styling */
.engine-parts {
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.1), rgba(255, 255, 255, 0.02));
}

.engine-parts .category-icon {
    background: linear-gradient(135deg, #00ff88, #00cc6a);
    box-shadow: 0 10px 30px rgba(0, 255, 136, 0.3);
}

.brake-parts .category-icon {
    background: linear-gradient(135deg, #ff6b6b, #ee5a52);
}

.transmission-parts .category-icon {
    background: linear-gradient(135deg, #4ecdc4, #44a08d);
}

.suspension-parts .category-icon {
    background: linear-gradient(135deg, #45b7d1, #3498db);
}

.electrical-parts .category-icon {
    background: linear-gradient(135deg, #f39c12, #e67e22);
}

.filters-parts .category-icon {
    background: linear-gradient(135deg, #9b59b6, #8e44ad);
}

/* Brands Section */
.brands-section {
    padding: 120px 0;
    background: #0f0f0f;
}

.brands-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 30px;
    margin-top: 60px;
    width: 100%;
}

.brand-card {
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.brand-card:hover {
    transform: translateY(-5px);
    border-color: #00ff88;
    box-shadow: 0 15px 30px rgba(0, 255, 136, 0.1);
}

.brand-logo {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #ffffff, #f0f0f0);
    border-radius: 50%;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    color: #333;
    transition: all 0.3s ease;
}

.brand-card:hover .brand-logo {
    transform: scale(1.1);
    background: linear-gradient(135deg, #00ff88, #00cc6a);
    color: #000;
}

.brand-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 8px;
}

.brand-description {
    font-size: 0.9rem;
    color: #b0b0b0;
    line-height: 1.4;
}

/* Quality Standards Section */
.quality-section {
    padding: 120px 0;
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.05), rgba(255, 255, 255, 0.02));
    position: relative;
    overflow: hidden;
}

.quality-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(0,255,136,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
    z-index: 0;
}

.quality-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 60px;
    position: relative;
    z-index: 1;
    width: 100%;
}

.quality-card {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    padding: 40px;
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

.quality-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 136, 0.1), transparent);
    transition: left 0.6s ease;
}

.quality-card:hover::before {
    left: 100%;
}

.quality-card:hover {
    transform: translateY(-15px) scale(1.02);
    border-color: #00ff88;
    box-shadow: 0 25px 50px rgba(0, 255, 136, 0.2);
    background: rgba(255, 255, 255, 0.05);
}

.quality-icon {
    width: 90px;
    height: 90px;
    background: linear-gradient(135deg, #00ff88, #00cc6a);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 30px;
    transition: all 0.4s ease;
    position: relative;
    z-index: 2;
    box-shadow: 0 10px 30px rgba(0, 255, 136, 0.3);
}

.quality-card:hover .quality-icon {
    transform: scale(1.15) rotate(5deg);
    box-shadow: 0 15px 40px rgba(0, 255, 136, 0.4);
}

.quality-icon i {
    font-size: 42px;
    color: #000000;
    transition: all 0.3s ease;
}

.quality-card:hover .quality-icon i {
    transform: scale(1.1);
}

.quality-content {
    display: flex;
    flex-direction: column;
    gap: 4rem;
    width: 100%;
}

.quality-certifications {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: center;
    width: 100%;
}

.cert-card {
    flex: 0 1 calc(50% - 1rem);
    min-width: 280px;
    max-width: 400px;
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 2rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: all 0.3s ease;
    cursor: pointer;
}

.cert-card:hover {
    transform: translateY(-5px);
    border-color: #00ff88;
    box-shadow: 0 15px 30px rgba(0, 255, 136, 0.15);
    background: rgba(255, 255, 255, 0.05);
}

.cert-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #00ff88, #00cc6a);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #000000;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.cert-card:hover .cert-icon {
    transform: scale(1.1);
    box-shadow: 0 10px 20px rgba(0, 255, 136, 0.3);
}

.cert-info {
    flex: 1;
}

.cert-info h3 {
    color: #ffffff;
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.cert-info p {
    color: #b0b0b0;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.cert-year {
    color: #00ff88;
    font-size: 0.8rem;
    font-weight: 500;
}

.quality-features {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: center;
    width: 100%;
}

.feature-card {
    flex: 0 1 calc(50% - 1rem);
    min-width: 280px;
    max-width: 400px;
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: #00ff88;
    box-shadow: 0 15px 30px rgba(0, 255, 136, 0.15);
    background: rgba(255, 255, 255, 0.05);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #00ff88, #00cc6a);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: #000000;
    margin: 0 auto 1.5rem;
    transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
    box-shadow: 0 10px 20px rgba(0, 255, 136, 0.3);
}

.feature-card h4 {
    color: #ffffff;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.feature-card p {
    color: #b0b0b0;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Vehicle Compatibility Section */
.compatibility-section {
    padding: 120px 0;
    background: #0f0f0f;
}

.compatibility-content {
    width: 100%;
}

.vehicle-categories {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.vehicle-tab {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.5rem 2rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 120px;
}

.vehicle-tab:hover,
.vehicle-tab.active {
    background: rgba(0, 255, 136, 0.1);
    border-color: #00ff88;
    transform: translateY(-5px);
}

.vehicle-tab i {
    font-size: 2rem;
    color: #00ff88;
}

.vehicle-tab span {
    color: #ffffff;
    font-weight: 500;
    font-size: 0.9rem;
}

.vehicle-content {
    width: 100%;
}

.vehicle-panel {
    display: none;
}

.vehicle-panel.active {
    display: block;
}

.vehicle-brands {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    width: 100%;
}

.brand-group {
    width: 100%;
}

.brand-group h4 {
    color: #ffffff;
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    text-align: center;
    background: linear-gradient(135deg, #ffffff, #00ff88);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.brand-list {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: center;
    width: 100%;
}

.brand-item {
    flex: 0 1 calc(50% - 1rem);
    min-width: 280px;
    max-width: 400px;
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 2rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: all 0.3s ease;
    cursor: pointer;
}

.brand-item:hover {
    transform: translateY(-5px);
    border-color: #00ff88;
    box-shadow: 0 15px 30px rgba(0, 255, 136, 0.15);
    background: rgba(255, 255, 255, 0.05);
}

.brand-item i {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #00ff88, #00cc6a);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #000000;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.brand-item:hover i {
    transform: scale(1.1);
    box-shadow: 0 10px 20px rgba(0, 255, 136, 0.3);
}

.brand-details {
    flex: 1;
}

.brand-details h5 {
    color: #ffffff;
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.brand-details p {
    color: #b0b0b0;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.parts-count {
    color: #00ff88;
    font-size: 0.8rem;
    font-weight: 500;
    background: rgba(0, 255, 136, 0.1);
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    display: inline-block;
    border: 1px solid rgba(0, 255, 136, 0.2);
}

/* CTA Section */
.cta-section {
    padding: 120px 0;
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.1), rgba(255, 255, 255, 0.02));
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 24px;
    background: linear-gradient(135deg, #ffffff 0%, #00ff88 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-subtitle {
    font-size: 1.1rem;
    color: #b0b0b0;
    margin-bottom: 40px;
    line-height: 1.6;
}

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

.btn-primary {
    background: linear-gradient(135deg, #00ff88, #00cc6a);
    color: #000000;
    padding: 16px 32px;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 255, 136, 0.3);
}

.btn-secondary {
    background: transparent;
    color: #ffffff;
    padding: 16px 32px;
    border: 2px solid #00ff88;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-secondary:hover {
    background: #00ff88;
    color: #000000;
    transform: translateY(-2px);
}

/* Footer */
.footer {
    background: #0a0a0a;
    padding: 60px 0 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    color: #ffffff;
    font-size: 1.2rem;
    margin-bottom: 20px;
    font-weight: 600;
}

.footer-section p,
.footer-section li {
    color: #b0b0b0;
    line-height: 1.6;
    margin-bottom: 8px;
}

.footer-section ul {
    list-style: none;
}

.footer-section a {
    color: #b0b0b0;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #00ff88;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: #00ff88;
    color: #000000;
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    text-align: center;
    color: #666;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .nav-container {
        padding: 0 15px;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: rgba(15, 15, 15, 0.95);
        backdrop-filter: blur(10px);
        flex-direction: column;
        justify-content: start;
        align-items: center;
        padding-top: 50px;
        transition: left 0.3s ease;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-logo {
        gap: 8px;
    }
    
    .logo-image {
        width: 32px;
        height: 32px;
    }
    
    .nav-logo h2 {
        font-size: 20px;
    }
    
    .nav-logo span {
        font-size: 10px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 30px;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .brands-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 20px;
    }
    
    .quality-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .quality-certifications {
        flex-direction: column;
        align-items: center;
    }
    
    .cert-card {
        flex: 1 1 100%;
        max-width: 100%;
        min-width: auto;
    }
    
    .quality-features {
        flex-direction: column;
        align-items: center;
    }
    
    .feature-card {
        flex: 1 1 100%;
        max-width: 100%;
        min-width: auto;
    }
    
    .compatibility-section .vehicle-categories {
        flex-direction: column;
        align-items: center;
    }
    
    .compatibility-section .vehicle-tab {
        min-width: auto;
        width: 80%;
        padding: 1rem 1.5rem;
    }
    
    .compatibility-section .vehicle-panel {
        margin-top: 20px;
    }
    
    .compatibility-section .vehicle-brands {
        flex-direction: column;
        align-items: center;
    }
    
    .compatibility-section .brand-group {
        width: 100%;
    }
    
    .compatibility-section .brand-group h4 {
        font-size: 1.2rem;
        margin-bottom: 1rem;
    }
    
    .compatibility-section .brand-list {
        flex-direction: column;
        align-items: center;
    }
    
    .compatibility-section .brand-item {
        flex: 1 1 100%;
        max-width: 100%;
        min-width: auto;
        padding: 1.5rem;
    }
    
    .compatibility-section .brand-item i {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .compatibility-section .brand-details h5 {
        font-size: 1rem;
    }
    
    .compatibility-section .parts-count {
        font-size: 0.7rem;
        padding: 0.2rem 0.6rem;
    }
    
    .vehicles-grid {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
        gap: 20px;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }
    
    .nav-container {
        padding: 0 10px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .category-card,
    .quality-card {
        padding: 25px;
    }
    
    .cert-card,
    .feature-card {
        padding: 1.5rem;
    }
    
    .brand-card,
    .vehicle-category {
        padding: 20px;
    }
    
    .compatibility-section .vehicle-tab {
        width: 100%;
        padding: 1rem;
        flex-direction: row;
        gap: 0.5rem;
    }
    
    .compatibility-section .vehicle-tab i {
        font-size: 1.5rem;
    }
    
    .compatibility-section .vehicle-tab span {
        font-size: 0.8rem;
    }
    
    .compatibility-section .brand-item {
        padding: 1rem;
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .compatibility-section .brand-item i {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .compatibility-section .brand-details h5 {
        font-size: 1rem;
    }
    
    .compatibility-section .brand-details p {
        font-size: 0.8rem;
    }
    
    .compatibility-section .parts-count {
        font-size: 0.7rem;
        padding: 0.2rem 0.6rem;
    }
    
    .cta-title {
        font-size: 1.8rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
}