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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

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

.navbar {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.3);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, #3b82f6 0%, #f59e0b 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.logo-icon::before {
    content: '';
    position: absolute;
    top: 0;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, rgba(255,255,255,0.1) 0%, transparent 50%);
    transform: rotate(45deg);
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: #fff;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu li a {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    transition: opacity 0.3s ease;
}

.nav-menu li a:hover {
    opacity: 0.8;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: #1d4ed8;
    padding: 20px;
    z-index: 999;
}

.mobile-menu ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.mobile-menu ul li a {
    color: #fff;
    text-decoration: none;
    font-size: 18px;
}

.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    color: #fff;
}

.hero-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 60px;
}

.hero-text {
    flex: 1;
}

.hero-text h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-text p {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 40px;
    text-decoration: none;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary {
    background: #fff;
    color: #3b82f6;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.3);
}

.btn-secondary {
    border: 2px solid #fff;
    color: #fff;
    background: transparent;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.phone-mockup {
    width: 320px;
    height: 640px;
    background: #1a1a1a;
    border-radius: 40px;
    padding: 14px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: #fff;
    border-radius: 32px;
    overflow: hidden;
}

.app-homepage {
    height: 100%;
    background: #f5f5f5;
    border-radius: 32px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.app-status-bar {
    height: 40px;
    background: #1d4ed8;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 16px;
    color: #fff;
    font-size: 13px;
    font-weight: 600;
}

.app-search-bar {
    background: #fff;
    margin: 8px 14px;
    padding: 10px 14px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}

.search-icon {
    width: 18px;
    height: 18px;
    border: 2px solid #999;
    border-radius: 50%;
    position: relative;
}

.search-icon::after {
    content: '';
    position: absolute;
    width: 8px;
    height: 2px;
    background: #999;
    transform: rotate(45deg);
    right: -5px;
    bottom: -1px;
}

.search-placeholder {
    color: #999;
    font-size: 13px;
}

.app-banner {
    margin: 0 14px 10px;
    height: 120px;
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    border-radius: 14px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    overflow: hidden;
}

.app-banner::before {
    content: '';
    position: absolute;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    top: -20px;
    right: -20px;
}

.app-banner::after {
    content: '';
    position: absolute;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.15);
    bottom: 10px;
    left: 20px;
}

.banner-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    z-index: 1;
}

.banner-icon {
    width: 48px;
    height: 48px;
    background: rgba(255,255,255,0.2);
    border-radius: 12px;
    position: relative;
}

.banner-icon::before {
    content: '';
    position: absolute;
    width: 24px;
    height: 24px;
    background: #fff;
    border-radius: 4px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.banner-icon::after {
    content: '';
    position: absolute;
    width: 8px;
    height: 8px;
    background: #3b82f6;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.banner-text {
    font-size: 16px;
    font-weight: 600;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.banner-dots {
    position: absolute;
    bottom: 10px;
    display: flex;
    gap: 6px;
}

.dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
}

.dot.active {
    background: #fff;
    width: 16px;
    border-radius: 3px;
}

.app-nav-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    padding: 0 14px 12px;
}

.nav-item {
    background: #fff;
    padding: 14px 6px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 2px 6px rgba(0,0,0,0.04);
}

.nav-icon {
    width: 36px;
    height: 36px;
    margin: 0 auto 4px;
    border-radius: 10px;
    position: relative;
}

.search-icon-bg {
    background: #dbeafe;
}

.search-icon-bg::before {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    border: 2px solid #3b82f6;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.search-icon-bg::after {
    content: '';
    position: absolute;
    width: 8px;
    height: 2px;
    background: #3b82f6;
    transform: rotate(45deg);
    right: 8px;
    bottom: 10px;
}

.car-icon-bg {
    background: #fef3c7;
}

.car-icon-bg::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 10px;
    background: #f59e0b;
    border-radius: 8px 8px 0 0;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
}

.car-icon-bg::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 6px;
    background: #f59e0b;
    border-radius: 0 0 4px 4px;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%);
}

.tag-icon-bg {
    background: #fce7f3;
}

.tag-icon-bg::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 16px;
    background: #ec4899;
    border-radius: 4px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-15deg);
}

.tag-icon-bg::after {
    content: '';
    position: absolute;
    width: 6px;
    height: 6px;
    background: #ec4899;
    border-radius: 50%;
    top: 10px;
    right: 8px;
}

.cart-icon-bg {
    background: #dcfce7;
}

.cart-icon-bg::before {
    content: '';
    position: absolute;
    width: 22px;
    height: 14px;
    border: 2px solid #22c55e;
    border-radius: 4px 4px 0 0;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
}

.cart-icon-bg::after {
    content: '';
    position: absolute;
    width: 8px;
    height: 8px;
    border: 2px solid #22c55e;
    border-radius: 50%;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%);
}

.nav-text {
    font-size: 11px;
    color: #333;
}

.app-product-section {
    padding: 0 14px;
    flex: 1;
    overflow: hidden;
}

.section-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.title-text {
    font-size: 15px;
    font-weight: 600;
    color: #333;
}

.title-more {
    font-size: 11px;
    color: #999;
}

.product-list {
    display: flex;
    gap: 10px;
}

.product-card {
    flex: 1;
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 6px rgba(0,0,0,0.04);
}

.product-image {
    height: 80px;
    position: relative;
    background: #f8fafc;
}

.brake-pad {
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
}

.brake-pad::before {
    content: '';
    position: absolute;
    width: 40px;
    height: 30px;
    background: #64748b;
    border-radius: 4px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.brake-pad::after {
    content: '';
    position: absolute;
    width: 12px;
    height: 20px;
    background: #94a3b8;
    border-radius: 2px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.filter {
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
}

.filter::before {
    content: '';
    position: absolute;
    width: 32px;
    height: 32px;
    border: 3px solid #64748b;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.filter::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid #94a3b8;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.product-info {
    padding: 8px;
}

.product-name {
    display: block;
    font-size: 12px;
    color: #333;
    margin-bottom: 3px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.product-price {
    font-size: 13px;
    font-weight: 600;
    color: #ef4444;
}

.features {
    padding: 80px 0;
    background: #fff;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 36px;
    font-weight: 700;
    color: #333;
    margin-bottom: 15px;
}

.section-header p {
    font-size: 18px;
    color: #666;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: #f8fafc;
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 20px;
    border-radius: 14px;
    position: relative;
}

.search-icon-lg {
    background: #dbeafe;
}

.search-icon-lg::before {
    content: '';
    position: absolute;
    width: 24px;
    height: 24px;
    border: 3px solid #3b82f6;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.search-icon-lg::after {
    content: '';
    position: absolute;
    width: 12px;
    height: 3px;
    background: #3b82f6;
    transform: rotate(45deg);
    right: 12px;
    bottom: 14px;
}

.car-icon-lg {
    background: #fef3c7;
}

.car-icon-lg::before {
    content: '';
    position: absolute;
    width: 30px;
    height: 15px;
    background: #f59e0b;
    border-radius: 12px 12px 0 0;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
}

.car-icon-lg::after {
    content: '';
    position: absolute;
    width: 36px;
    height: 10px;
    background: #f59e0b;
    border-radius: 0 0 6px 6px;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
}

.tag-icon-lg {
    background: #fce7f3;
}

.tag-icon-lg::before {
    content: '';
    position: absolute;
    width: 30px;
    height: 24px;
    background: #ec4899;
    border-radius: 6px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-15deg);
}

.tag-icon-lg::after {
    content: '';
    position: absolute;
    width: 10px;
    height: 10px;
    background: #ec4899;
    border-radius: 50%;
    top: 14px;
    right: 12px;
}

.box-icon-lg {
    background: #d1fae5;
}

.box-icon-lg::before {
    content: '';
    position: absolute;
    width: 32px;
    height: 20px;
    background: #10b981;
    border-radius: 4px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.box-icon-lg::after {
    content: '';
    position: absolute;
    width: 28px;
    height: 8px;
    background: #059669;
    border-radius: 0 0 4px 4px;
    top: 32px;
    left: 50%;
    transform: translateX(-50%);
}

.chat-icon-lg {
    background: #ede9fe;
}

.chat-icon-lg::before {
    content: '';
    position: absolute;
    width: 36px;
    height: 28px;
    background: #8b5cf6;
    border-radius: 14px 14px 4px 14px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.chat-icon-lg::after {
    content: '';
    position: absolute;
    width: 14px;
    height: 14px;
    background: #a78bfa;
    border-radius: 50% 50% 50% 0;
    bottom: 10px;
    right: 12px;
}

.chart-icon-lg {
    background: #fed7aa;
}

.chart-icon-lg::before {
    content: '';
    position: absolute;
    width: 6px;
    height: 28px;
    background: #f97316;
    border-radius: 3px;
    top: 14px;
    left: 14px;
}

.chart-icon-lg::after {
    content: '';
    position: absolute;
    width: 12px;
    height: 36px;
    background: #fb923c;
    border-radius: 6px;
    bottom: 10px;
    right: 14px;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: #333;
    margin-bottom: 15px;
}

.feature-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

.download {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.download-content {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 80px;
}

.download-card {
    text-align: center;
}

.qr-code {
    width: 200px;
    height: 200px;
    background: #fff;
    border-radius: 20px;
    padding: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
}

.qr-inner {
    width: 100%;
    height: 100%;
    background: #fff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.qr-pattern {
    width: 150px;
    height: 150px;
    background: repeating-linear-gradient(
        0deg,
        #333 0px,
        #333 2px,
        #fff 2px,
        #fff 4px
    );
    border-radius: 8px;
}

.download-card p {
    font-size: 18px;
    font-weight: 600;
    color: #333;
    margin-bottom: 5px;
}

.small-text {
    font-size: 14px;
    color: #666 !important;
    font-weight: 400 !important;
}

.app-stores {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.store-btn {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px 40px;
    background: #fff;
    border-radius: 16px;
    text-decoration: none;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.store-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.15);
}

.store-icon {
    font-size: 40px;
}

.store-info {
    display: flex;
    flex-direction: column;
}

.store-label {
    font-size: 12px;
    color: #999;
}

.store-name {
    font-size: 18px;
    font-weight: 600;
    color: #333;
}

.about {
    padding: 80px 0;
    background: #fff;
}

.about-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

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

.about-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 20px;
    border-radius: 14px;
    position: relative;
}

.building-icon {
    background: #dbeafe;
}

.building-icon::before {
    content: '';
    position: absolute;
    width: 36px;
    height: 30px;
    background: #3b82f6;
    border-radius: 6px 6px 0 0;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
}

.building-icon::after {
    content: '';
    position: absolute;
    width: 44px;
    height: 10px;
    background: #1d4ed8;
    border-radius: 0 0 8px 8px;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
}

.target-icon {
    background: #fef3c7;
}

.target-icon::before {
    content: '';
    position: absolute;
    width: 36px;
    height: 36px;
    border: 4px solid #f59e0b;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.target-icon::after {
    content: '';
    position: absolute;
    width: 12px;
    height: 12px;
    background: #ef4444;
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.phone-icon {
    background: #d1fae5;
}

.phone-icon::before {
    content: '';
    position: absolute;
    width: 24px;
    height: 36px;
    background: #10b981;
    border-radius: 12px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.phone-icon::after {
    content: '';
    position: absolute;
    width: 10px;
    height: 4px;
    background: #059669;
    border-radius: 2px;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
}

.about-item h3 {
    font-size: 20px;
    font-weight: 600;
    color: #333;
    margin-bottom: 15px;
}

.about-item p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

.footer {
    background: #1e293b;
    color: #fff;
    padding: 40px 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-logo .logo-icon {
    width: 36px;
    height: 36px;
    font-size: 20px;
}

.footer-logo .logo-text {
    font-size: 20px;
}

.footer-links {
    display: flex;
    gap: 30px;
}

.footer-links a {
    color: #94a3b8;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

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

.footer-copyright {
    text-align: right;
}

.footer-copyright p {
    font-size: 12px;
    color: #64748b;
    margin-bottom: 5px;
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero-content {
        flex-direction: column;
        text-align: center;
        gap: 40px;
    }

    .hero-text h1 {
        font-size: 32px;
    }

    .hero-buttons {
        justify-content: center;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .download-content {
        flex-direction: column;
        gap: 40px;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }

    .footer-copyright {
        text-align: center;
    }
}