* {
    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: #f5f7fa;
}

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

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

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

.logo {
    display: flex;
    align-items: center;
    color: #fff;
}

.logo-icon {
    font-size: 28px;
    margin-right: 10px;
}

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

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

nav ul li {
    margin-left: 30px;
}

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

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

.header-actions {
    display: flex;
    gap: 15px;
}

.btn-primary,
.btn-secondary {
    padding: 8px 20px;
    border: none;
    border-radius: 5px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 212, 255, 0.3);
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border: 1px solid #fff;
}

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

.hero {
    padding: 150px 0 80px;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: #fff;
}

.hero-content {
    text-align: center;
    margin-bottom: 60px;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: bold;
}

.hero-subtitle {
    font-size: 24px;
    margin-bottom: 20px;
    color: #00d4ff;
}

.hero-desc {
    font-size: 18px;
    max-width: 800px;
    margin: 0 auto 40px;
    color: rgba(255, 255, 255, 0.8);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 80px;
    margin-bottom: 50px;
}

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

.stat-value {
    display: block;
    font-size: 40px;
    font-weight: bold;
    color: #00d4ff;
}

.stat-label {
    display: block;
    font-size: 16px;
    margin-top: 5px;
    color: rgba(255, 255, 255, 0.7);
}

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

.btn-large {
    padding: 15px 40px;
    font-size: 18px;
    border-radius: 8px;
}

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

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

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

.feature-card {
    background: rgba(255, 255, 255, 0.1);
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    min-width: 250px;
    backdrop-filter: blur(10px);
}

.feature-icon {
    font-size: 40px;
    margin-bottom: 15px;
}

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

.feature-card p {
    color: rgba(255, 255, 255, 0.7);
}

.section-header {
    text-align: center;
    padding: 60px 0 40px;
}

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

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

.products {
    padding: 40px 0 80px;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.product-card {
    background: #fff;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s, box-shadow 0.3s;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

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

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

.product-card p {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.8;
}

.product-card ul {
    list-style: none;
    margin-bottom: 25px;
}

.product-card ul li {
    padding: 8px 0;
    color: #444;
}

.news {
    padding: 40px 0 80px;
    background: #f8f9fa;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 30px;
}

.news-card {
    background: #fff;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s;
}

.news-card:hover {
    transform: translateY(-5px);
}

.news-tag {
    display: inline-block;
    padding: 5px 15px;
    background: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
    color: #fff;
    border-radius: 20px;
    font-size: 12px;
    margin-bottom: 15px;
}

.news-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #1a1a2e;
    line-height: 1.4;
}

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

.news-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid #eee;
}

.news-time {
    font-size: 13px;
    color: #999;
}

.news-category {
    font-size: 13px;
    color: #00d4ff;
}

.about {
    padding: 40px 0 80px;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 50px;
    margin-bottom: 60px;
}

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

.about-text p {
    font-size: 16px;
    color: #666;
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-values {
    display: flex;
    gap: 30px;
    margin-top: 40px;
}

.value-item {
    text-align: center;
    padding: 25px;
    background: #f8f9fa;
    border-radius: 10px;
    flex: 1;
}

.value-icon {
    font-size: 35px;
    margin-bottom: 15px;
}

.value-item h4 {
    margin-bottom: 10px;
    color: #1a1a2e;
}

.value-item p {
    margin: 0;
    font-size: 14px;
}

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

.about-stat {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    color: #fff;
}

.about-stat-value {
    display: block;
    font-size: 45px;
    font-weight: bold;
    color: #00d4ff;
}

.about-stat-label {
    display: block;
    font-size: 16px;
    margin-top: 10px;
    color: rgba(255, 255, 255, 0.8);
}

.about-team h3 {
    font-size: 26px;
    margin-bottom: 30px;
    text-align: center;
    color: #1a1a2e;
}

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

.team-card {
    background: #fff;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.05);
    text-align: center;
}

.team-icon {
    font-size: 50px;
    margin-bottom: 15px;
}

.team-card h4 {
    font-size: 18px;
    margin-bottom: 5px;
    color: #1a1a2e;
}

.team-card p {
    font-size: 14px;
    color: #666;
    margin: 5px 0;
}

.contact {
    padding: 40px 0 80px;
    background: #f8f9fa;
}

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

.contact-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    background: #fff;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.05);
}

.contact-icon {
    font-size: 30px;
}

.contact-item h4 {
    margin-bottom: 8px;
    color: #1a1a2e;
}

.contact-item p {
    color: #666;
    font-size: 14px;
    margin: 3px 0;
}

.contact-form {
    background: #fff;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.contact-form h3 {
    font-size: 22px;
    margin-bottom: 30px;
    color: #1a1a2e;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 15px;
    transition: border-color 0.3s;
}

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

.contact-form textarea {
    resize: none;
}

.social-links {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #ddd;
}

.social-links h3 {
    margin-bottom: 20px;
    color: #1a1a2e;
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: 25px;
}

.social-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fff;
    border-radius: 50%;
    font-size: 25px;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s, box-shadow 0.3s;
}

.social-icon:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

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

.footer-content {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    margin-bottom: 20px;
    font-size: 16px;
    color: #00d4ff;
}

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

.footer-section ul li {
    margin-bottom: 12px;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s;
}

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

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    margin-top: 15px;
    line-height: 1.8;
}

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

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
    margin-bottom: 5px;
}

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

    nav ul li {
        margin-left: 20px;
        margin-right: 20px;
    }

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

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

    .hero-features {
        flex-direction: column;
        gap: 20px;
    }

    .feature-card {
        min-width: auto;
    }

    .products-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }

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

    .about-values {
        flex-direction: column;
    }

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

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

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

    .contact-info {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }
}