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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

header {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    padding: 15px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

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

.logo-icon {
    font-size: 28px;
}

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

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

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

.nav-links a:hover {
    color: #00d4ff;
}

.download-btn a {
    background: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
    color: #fff;
    padding: 10px 25px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: bold;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.download-btn a:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 212, 255, 0.4);
}

.hero-section {
    padding: 150px 20px 100px;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    display: flex;
    max-width: 1200px;
    margin: 0 auto;
    align-items: center;
    gap: 60px;
}

.hero-content {
    flex: 1;
}

.hero-content h1 {
    font-size: 48px;
    color: #fff;
    margin-bottom: 10px;
}

.hero-content h2 {
    font-size: 32px;
    color: #00d4ff;
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 18px;
    color: #ccc;
    margin-bottom: 30px;
    line-height: 1.8;
}

.hero-features {
    display: flex;
    gap: 30px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
    padding: 10px 20px;
    border-radius: 20px;
}

.feature-icon {
    font-size: 20px;
}

.cta-buttons {
    display: flex;
    gap: 20px;
}

.primary-btn, .secondary-btn {
    padding: 15px 35px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    font-size: 16px;
    transition: all 0.3s ease;
}

.primary-btn {
    background: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
    color: #fff;
}

.primary-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 212, 255, 0.4);
}

.secondary-btn {
    background: transparent;
    color: #fff;
    border: 2px solid #00d4ff;
}

.secondary-btn:hover {
    background: rgba(0, 212, 255, 0.1);
}

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

.phone-mockup {
    background: linear-gradient(135deg, #333 0%, #555 100%);
    width: 280px;
    height: 560px;
    border-radius: 40px;
    padding: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.phone-screen {
    background: #0f3460;
    width: 100%;
    height: 100%;
    border-radius: 30px;
    overflow: hidden;
}

.app-header {
    background: rgba(0, 212, 255, 0.2);
    padding: 15px 20px;
    color: #00d4ff;
    font-weight: bold;
    font-size: 18px;
}

.app-content {
    padding: 20px;
}

.price-card {
    background: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 15px;
    margin-bottom: 20px;
}

.price-label {
    color: #ccc;
    font-size: 14px;
    display: block;
}

.price-value {
    color: #fff;
    font-size: 28px;
    font-weight: bold;
    display: block;
}

.price-change {
    color: #00ff00;
    font-size: 16px;
}

.market-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.market-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 15px;
    border-radius: 10px;
    color: #fff;
    text-align: center;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 36px;
    color: #1a1a2e;
    margin-bottom: 15px;
}

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

.product-section {
    padding: 80px 20px;
    background: #fff;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.product-card {
    background: #f8f9fa;
    padding: 35px;
    border-radius: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.product-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.product-card h3 {
    font-size: 24px;
    color: #1a1a2e;
    margin-bottom: 15px;
}

.product-card p {
    font-size: 16px;
    color: #666;
    margin-bottom: 20px;
}

.product-features {
    list-style: none;
}

.product-features li {
    padding: 8px 0;
    color: #444;
    position: relative;
    padding-left: 20px;
}

.product-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #00d4ff;
}

.app-download-section {
    max-width: 600px;
    margin: 60px auto 0;
    text-align: center;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    padding: 50px;
    border-radius: 30px;
}

.app-download-section h3 {
    font-size: 32px;
    color: #fff;
    margin-bottom: 15px;
}

.app-download-section p {
    font-size: 18px;
    color: #00d4ff;
    margin-bottom: 30px;
}

.download-options {
    display: flex;
    justify-content: center;
    gap: 40px;
}

.download-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

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

.download-item span:nth-child(2) {
    color: #fff;
    font-size: 16px;
}

.download-link {
    background: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
    color: #fff;
    padding: 10px 30px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: bold;
    transition: transform 0.3s ease;
}

.download-link:hover {
    transform: translateY(-2px);
}

.news-section {
    padding: 80px 20px;
    background: #f5f5f5;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.news-card {
    background: #fff;
    padding: 30px;
    border-radius: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.news-category {
    background: #00d4ff;
    color: #fff;
    padding: 5px 15px;
    border-radius: 15px;
    font-size: 14px;
    display: inline-block;
    margin-bottom: 15px;
}

.news-card h3 {
    font-size: 20px;
    color: #1a1a2e;
    margin-bottom: 15px;
    line-height: 1.5;
}

.news-card p {
    font-size: 16px;
    color: #666;
    margin-bottom: 20px;
    line-height: 1.7;
}

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

.news-date {
    color: #999;
    font-size: 14px;
}

.news-read {
    color: #00d4ff;
    font-size: 14px;
    text-decoration: none;
}

.news-read:hover {
    text-decoration: underline;
}

.about-section {
    padding: 80px 20px;
    background: #fff;
}

.about-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.about-text h3 {
    font-size: 28px;
    color: #1a1a2e;
    margin-bottom: 20px;
}

.about-text p {
    font-size: 16px;
    color: #666;
    margin-bottom: 15px;
    line-height: 1.8;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.stat-item {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    padding: 30px;
    border-radius: 20px;
    text-align: center;
}

.stat-number {
    font-size: 36px;
    color: #00d4ff;
    font-weight: bold;
    display: block;
}

.stat-label {
    font-size: 16px;
    color: #fff;
}

.about-features {
    max-width: 1200px;
    margin: 0 auto;
}

.about-features h3 {
    font-size: 28px;
    color: #1a1a2e;
    text-align: center;
    margin-bottom: 40px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-box {
    background: #f8f9fa;
    padding: 35px;
    border-radius: 20px;
    text-align: center;
    transition: transform 0.3s ease;
}

.feature-box:hover {
    transform: translateY(-5px);
}

.feature-box .feature-icon {
    font-size: 40px;
    margin-bottom: 20px;
}

.feature-box h4 {
    font-size: 20px;
    color: #1a1a2e;
    margin-bottom: 15px;
}

.feature-box p {
    font-size: 16px;
    color: #666;
    line-height: 1.6;
}

.contact-section {
    padding: 80px 20px;
    background: #f5f5f5;
}

.contact-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    background: #fff;
    padding: 25px;
    border-radius: 15px;
}

.contact-icon {
    font-size: 36px;
}

.contact-detail h4 {
    font-size: 20px;
    color: #1a1a2e;
    margin-bottom: 5px;
}

.contact-detail p {
    font-size: 16px;
    color: #666;
}

.contact-form {
    background: #fff;
    padding: 40px;
    border-radius: 20px;
}

.contact-form h3 {
    font-size: 24px;
    color: #1a1a2e;
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 16px;
    color: #333;
    margin-bottom: 10px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid #ddd;
    border-radius: 10px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #00d4ff;
}

.form-group textarea {
    height: 150px;
    resize: none;
}

.submit-btn {
    background: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
    color: #fff;
    padding: 15px 40px;
    border: none;
    border-radius: 25px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.3s ease;
    width: 100%;
}

.submit-btn:hover {
    transform: translateY(-2px);
}

footer {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    padding: 60px 20px 30px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 18px;
    color: #fff;
    margin-bottom: 20px;
}

.footer-section p {
    font-size: 14px;
    color: #ccc;
    margin-bottom: 20px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

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

.footer-links a:hover {
    color: #00d4ff;
}

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

.social-links span {
    color: #ccc;
    font-size: 14px;
    cursor: pointer;
    transition: color 0.3s ease;
}

.social-links span:hover {
    color: #00d4ff;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: #999;
    font-size: 14px;
    margin-bottom: 5px;
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-section {
        flex-direction: column;
        text-align: center;
        padding: 120px 20px 60px;
    }
    
    .hero-content h1 {
        font-size: 32px;
    }
    
    .hero-content h2 {
        font-size: 24px;
    }
    
    .hero-features {
        justify-content: center;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .download-options {
        flex-direction: column;
    }
    
    .section-header h2 {
        font-size: 28px;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 28px;
    }
    
    .hero-content h2 {
        font-size: 20px;
    }
    
    .hero-content p {
        font-size: 16px;
    }
    
    .feature-item {
        padding: 8px 15px;
        font-size: 14px;
    }
    
    .phone-mockup {
        width: 220px;
        height: 440px;
        padding: 15px;
    }
    
    .product-card, .news-card, .feature-box {
        padding: 25px;
    }
    
    .app-download-section {
        padding: 30px 20px;
    }
}