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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 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;
    gap: 10px;
}

.logo-icon {
    font-size: 32px;
    color: #f7931a;
}

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

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

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

.nav a:hover,
.nav a.active {
    color: #f7931a;
}

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

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary {
    background: linear-gradient(135deg, #f7931a 0%, #ff6b35 100%);
    color: #fff;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(247, 147, 26, 0.4);
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border: 1px solid #f7931a;
}

.btn-secondary:hover {
    background: rgba(247, 147, 26, 0.1);
}

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

.btn-gradient {
    background: linear-gradient(135deg, #f7931a 0%, #ff6b35 100%);
    color: #fff;
}

.btn-outline {
    background: transparent;
    color: #f7931a;
    border: 2px solid #f7931a;
}

.btn-outline:hover {
    background: #f7931a;
    color: #fff;
}

.btn-full {
    width: 100%;
}

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

.hero-content {
    text-align: center;
    margin-bottom: 80px;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    line-height: 1.3;
}

.highlight {
    color: #f7931a;
}

.hero-desc {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.9;
}

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

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

.stat-value {
    display: block;
    font-size: 36px;
    font-weight: bold;
    color: #f7931a;
}

.stat-label {
    font-size: 14px;
    opacity: 0.8;
}

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

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

.feature-card {
    background: rgba(255, 255, 255, 0.1);
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    backdrop-filter: blur(10px);
    transition: transform 0.3s, background 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.15);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.feature-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
}

.feature-card p {
    font-size: 14px;
    opacity: 0.8;
    line-height: 1.6;
}

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

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

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

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

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

.product-card {
    background: #f8f9fa;
    padding: 35px;
    border-radius: 15px;
    text-align: center;
    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: 48px;
    margin-bottom: 20px;
}

.product-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #1a1a2e;
}

.product-card p {
    font-size: 14px;
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.product-features {
    list-style: none;
    margin-bottom: 25px;
    text-align: left;
}

.product-features li {
    padding: 8px 0;
    font-size: 14px;
    color: #555;
}

.btn-product {
    background: linear-gradient(135deg, #f7931a 0%, #ff6b35 100%);
    color: #fff;
    padding: 12px 30px;
}

.news {
    padding: 80px 0;
    background: #f5f7fa;
}

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

.news-card {
    background: #fff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s, box-shadow 0.3s;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}

.news-card.featured {
    grid-column: span 2;
    display: flex;
}

.news-image {
    width: 200px;
    height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    background: linear-gradient(135deg, #f7931a 0%, #ff6b35 100%);
}

.news-card.featured .news-image {
    width: 300px;
    height: 100%;
}

.news-content {
    padding: 25px;
}

.news-category {
    display: inline-block;
    padding: 5px 15px;
    background: rgba(247, 147, 26, 0.1);
    color: #f7931a;
    border-radius: 20px;
    font-size: 12px;
    margin-bottom: 15px;
}

.news-card h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: #1a1a2e;
    line-height: 1.4;
}

.news-card.featured h3 {
    font-size: 24px;
}

.news-card p {
    font-size: 14px;
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.news-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #999;
    font-size: 13px;
}

.news-time {
    display: flex;
    align-items: center;
    gap: 5px;
}

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

.about-content {
    display: flex;
    gap: 60px;
    margin-bottom: 60px;
}

.about-text {
    flex: 1;
}

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

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

.stat-number {
    display: block;
    font-size: 32px;
    font-weight: bold;
    color: #f7931a;
}

.stat-text {
    font-size: 14px;
    color: #666;
}

.about-image {
    width: 400px;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    border-radius: 15px;
}

.about-icon {
    font-size: 80px;
}

.values {
    margin-top: 60px;
}

.values h3 {
    font-size: 24px;
    text-align: center;
    margin-bottom: 40px;
    color: #1a1a2e;
}

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

.value-card {
    text-align: center;
    padding: 30px;
    background: #f8f9fa;
    border-radius: 15px;
}

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

.value-card h4 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #1a1a2e;
}

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

.contact {
    padding: 80px 0;
    background: #f5f7fa;
}

.contact-content {
    display: flex;
    gap: 60px;
}

.contact-info {
    flex: 1;
}

.contact-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    padding: 20px;
    background: #fff;
    border-radius: 10px;
}

.contact-icon {
    font-size: 36px;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(247, 147, 26, 0.1);
    border-radius: 12px;
}

.contact-details h4 {
    font-size: 18px;
    margin-bottom: 8px;
    color: #1a1a2e;
}

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

.contact-form {
    flex: 1;
    background: #fff;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

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

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 10px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #f7931a;
}

.form-group textarea {
    resize: vertical;
}

.footer {
    background: #1a1a2e;
    color: #fff;
    padding: 60px 0;
}

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

.footer-section h4 {
    font-size: 18px;
    margin-bottom: 20px;
    color: #f7931a;
}

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

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

.footer-section a {
    color: #999;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.footer-section a:hover {
    color: #f7931a;
}

.footer-section p {
    color: #999;
    font-size: 14px;
    line-height: 1.6;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: #666;
    font-size: 14px;
}

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

.footer-links a {
    color: #666;
    text-decoration: none;
    font-size: 14px;
}

.footer-links a:hover {
    color: #f7931a;
}

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

    .nav ul {
        gap: 15px;
    }

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

    .hero-desc {
        font-size: 16px;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 30px;
    }

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

    .products-grid {
        grid-template-columns: repeat(1, 1fr);
    }

    .news-grid {
        grid-template-columns: repeat(1, 1fr);
    }

    .news-card.featured {
        grid-column: span 1;
        flex-direction: column;
    }

    .news-card.featured .news-image {
        width: 100%;
        height: 200px;
    }

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

    .about-image {
        width: 100%;
    }

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

    .contact-content {
        flex-direction: column;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: 15px;
    }
}

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

    .values-grid {
        grid-template-columns: repeat(1, 1fr);
    }

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