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

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

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

header {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: white;
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

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

.logo h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 5px;
}

.logo p {
    font-size: 14px;
    opacity: 0.8;
}

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

nav ul li a {
    color: white;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: color 0.3s ease;
}

nav ul li a:hover {
    color: #00d4ff;
}

.hero {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.hero h2 {
    font-size: 42px;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero p {
    font-size: 18px;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.9;
}

.features {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.feature {
    background: rgba(255, 255, 255, 0.1);
    padding: 30px;
    border-radius: 15px;
    transition: transform 0.3s ease, background 0.3s ease;
}

.feature:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
}

.feature .emoji {
    font-size: 40px;
    margin-bottom: 15px;
    display: block;
}

.feature h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.feature p {
    font-size: 14px;
    opacity: 0.8;
}

.cta-btn {
    background: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
    color: white;
    border: none;
    padding: 15px 40px;
    font-size: 18px;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.cta-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.4);
}

.products {
    padding: 80px 0;
    background: white;
}

.products h2 {
    font-size: 36px;
    text-align: center;
    margin-bottom: 10px;
    color: #1a1a2e;
}

.subtitle {
    text-align: center;
    color: #666;
    font-size: 16px;
    margin-bottom: 50px;
}

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

.product-card {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 15px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #e0e0e0;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.product-icon {
    font-size: 45px;
    margin-bottom: 20px;
    display: block;
}

.product-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: #1a1a2e;
}

.product-card p {
    font-size: 14px;
    color: #666;
    margin-bottom: 20px;
}

.product-card ul {
    list-style: none;
}

.product-card ul li {
    padding: 8px 0;
    font-size: 14px;
    color: #555;
    border-bottom: 1px dashed #ddd;
}

.product-card ul li:last-child {
    border-bottom: none;
}

.news {
    padding: 80px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
}

.news h2 {
    font-size: 36px;
    text-align: center;
    margin-bottom: 10px;
    color: #1a1a2e;
}

.news-list {
    max-width: 900px;
    margin: 0 auto;
}

.news-item {
    background: white;
    padding: 30px;
    margin-bottom: 20px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.news-item:hover {
    transform: translateX(10px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.news-date {
    font-size: 14px;
    color: #999;
    margin-bottom: 10px;
    display: block;
}

.news-item h3 {
    font-size: 20px;
    margin-bottom: 15px;
}

.news-item h3 a {
    color: #1a1a2e;
    text-decoration: none;
    transition: color 0.3s ease;
}

.news-item h3 a:hover {
    color: #0099cc;
}

.news-item p {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
}

.about {
    padding: 80px 0;
    background: white;
}

.about h2 {
    font-size: 36px;
    text-align: center;
    margin-bottom: 10px;
    color: #1a1a2e;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 50px;
}

.about-text h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #1a1a2e;
}

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

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.stat-item {
    background: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    color: white;
}

.stat-value {
    font-size: 36px;
    font-weight: 700;
    display: block;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 14px;
    opacity: 0.9;
}

.mission-vision {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.mission, .vision {
    background: #f8f9fa;
    padding: 40px;
    border-radius: 15px;
    text-align: center;
}

.mission .icon, .vision .icon {
    font-size: 45px;
    margin-bottom: 20px;
    display: block;
}

.mission h3, .vision h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: #1a1a2e;
}

.mission p, .vision p {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
}

.contact {
    padding: 80px 0;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: white;
}

.contact h2 {
    font-size: 36px;
    text-align: center;
    margin-bottom: 10px;
}

.contact .subtitle {
    color: rgba(255, 255, 255, 0.7);
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-bottom: 50px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
}

.contact-icon {
    font-size: 35px;
}

.contact-item h4 {
    font-size: 18px;
    margin-bottom: 5px;
}

.contact-item p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 15px;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.1);
    padding: 40px;
    border-radius: 15px;
}

.contact-form h3 {
    font-size: 22px;
    margin-bottom: 30px;
    text-align: center;
}

.contact-form input, .contact-form textarea {
    width: 100%;
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.05);
    color: white;
    font-size: 15px;
    outline: none;
    transition: border-color 0.3s ease;
}

.contact-form input:focus, .contact-form textarea:focus {
    border-color: #00d4ff;
}

.contact-form input::placeholder, .contact-form textarea::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.contact-form button {
    width: 100%;
    background: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
    color: white;
    border: none;
    padding: 15px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.contact-form button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 212, 255, 0.3);
}

footer {
    background: #0f0f1a;
    color: white;
    padding: 60px 0 30px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.footer-links h4 {
    font-size: 18px;
    margin-bottom: 20px;
    color: #00d4ff;
}

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

.footer-links ul li {
    margin-bottom: 10px;
}

.footer-links ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 5px;
}

@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        gap: 20px;
    }

    nav ul {
        gap: 15px;
    }

    .hero h2 {
        font-size: 28px;
    }

    .features {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

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

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

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

    .mission-vision {
        grid-template-columns: 1fr;
    }

    .contact-info {
        flex-direction: column;
        gap: 30px;
        align-items: center;
    }

    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .features {
        grid-template-columns: 1fr;
    }

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

    .footer-links {
        grid-template-columns: 1fr;
    }
}