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

body {
    font-family: "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.8;
    color: #333;
    background: #f5f5f5;
}

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

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

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

.logo {
    font-size: 28px;
    font-weight: bold;
    color: #f7931a;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo span {
    color: #fff;
}

.nav {
    display: flex;
    gap: 35px;
}

.nav a {
    color: #e0e0e0;
    text-decoration: none;
    font-size: 16px;
    transition: color 0.3s;
    padding: 8px 0;
    position: relative;
}

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

.nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #f7931a;
    transition: width 0.3s;
}

.nav a:hover::after {
    width: 100%;
}

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

.hero::before {
    content: '₿';
    position: absolute;
    font-size: 400px;
    opacity: 0.05;
    right: -50px;
    top: 50%;
    transform: translateY(-50%);
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    color: #f7931a;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero p {
    font-size: 20px;
    max-width: 800px;
    margin: 0 auto 30px;
    color: #ccc;
}

.hero-btn {
    display: inline-block;
    background: linear-gradient(135deg, #f7931a 0%, #ff9500 100%);
    color: #fff;
    padding: 15px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-size: 18px;
    font-weight: bold;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 4px 15px rgba(247,147,26,0.4);
}

.hero-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(247,147,26,0.5);
}

.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    color: #1a1a2e;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(135deg, #f7931a 0%, #ff9500 100%);
    margin: 15px auto 0;
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    font-size: 18px;
    color: #666;
    margin-top: -30px;
    margin-bottom: 50px;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.feature-card {
    background: #fff;
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 30px rgba(0,0,0,0.08);
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.12);
}

.feature-icon {
    font-size: 60px;
    margin-bottom: 20px;
}

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

.feature-card p {
    color: #666;
    font-size: 15px;
}

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

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

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

.product-img {
    height: 220px;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 80px;
}

.product-content {
    padding: 30px;
}

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

.product-content p {
    color: #666;
    font-size: 15px;
    margin-bottom: 20px;
}

.product-tag {
    display: inline-block;
    background: linear-gradient(135deg, #f7931a 0%, #ff9500 100%);
    color: #fff;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 13px;
}

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

.news-item {
    background: #fff;
    padding: 30px;
    border-radius: 15px;
    margin-bottom: 25px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.06);
    transition: transform 0.3s, box-shadow 0.3s;
}

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

.news-date {
    color: #f7931a;
    font-size: 14px;
    margin-bottom: 10px;
    font-weight: bold;
}

.news-item h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: #1a1a2e;
    transition: color 0.3s;
}

.news-item:hover h3 {
    color: #f7931a;
}

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

.read-more {
    display: inline-block;
    color: #f7931a;
    text-decoration: none;
    margin-top: 15px;
    font-weight: bold;
    transition: color 0.3s;
}

.read-more:hover {
    color: #ff9500;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h3 {
    font-size: 28px;
    margin-bottom: 25px;
    color: #1a1a2e;
}

.about-text p {
    color: #666;
    font-size: 16px;
    margin-bottom: 20px;
    line-height: 2;
}

.about-image {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    border-radius: 20px;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 120px;
}

.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 80px;
}

.stat-item {
    text-align: center;
    background: #fff;
    padding: 40px 20px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.06);
}

.stat-number {
    font-size: 48px;
    font-weight: bold;
    color: #f7931a;
    margin-bottom: 10px;
}

.stat-label {
    color: #666;
    font-size: 16px;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.contact-card {
    background: #fff;
    padding: 40px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.06);
}

.contact-icon {
    font-size: 50px;
    margin-bottom: 20px;
}

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

.contact-card p {
    color: #666;
    font-size: 15px;
}

.contact-form {
    background: #fff;
    padding: 50px;
    border-radius: 15px;
    box-shadow: 0 5px 30px rgba(0,0,0,0.08);
    max-width: 700px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    color: #1a1a2e;
    font-weight: bold;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 16px;
    font-family: inherit;
    transition: border-color 0.3s;
}

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

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.submit-btn {
    width: 100%;
    background: linear-gradient(135deg, #f7931a 0%, #ff9500 100%);
    color: #fff;
    padding: 18px;
    border: none;
    border-radius: 10px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 4px 15px rgba(247,147,26,0.3);
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(247,147,26,0.4);
}

.footer {
    background: #1a1a2e;
    color: #fff;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 20px;
    margin-bottom: 25px;
    color: #f7931a;
}

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

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

.footer-section ul li a {
    color: #aaa;
    text-decoration: none;
    transition: color 0.3s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #333;
    color: #888;
    font-size: 14px;
}

.breadcrumb {
    background: #e8e8e8;
    padding: 15px 0;
    font-size: 14px;
}

.breadcrumb a {
    color: #666;
    text-decoration: none;
}

.breadcrumb a:hover {
    color: #f7931a;
}

.breadcrumb span {
    margin: 0 10px;
    color: #999;
}

.page-header {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    padding: 60px 0;
    text-align: center;
    color: #fff;
}

.page-header h1 {
    font-size: 42px;
    margin-bottom: 15px;
    color: #f7931a;
}

.page-header p {
    font-size: 18px;
    color: #aaa;
}

.advantages {
    background: #fff;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.advantage-item {
    text-align: center;
    padding: 30px;
}

.advantage-icon {
    font-size: 50px;
    margin-bottom: 20px;
}

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

.advantage-item p {
    color: #666;
    font-size: 15px;
}

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

.highlight-section .section-title {
    color: #fff;
}

.highlight-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.highlight-text h3 {
    font-size: 28px;
    margin-bottom: 25px;
    color: #f7931a;
}

.highlight-text p {
    color: #ccc;
    font-size: 16px;
    line-height: 2;
    margin-bottom: 20px;
}

.highlight-image {
    font-size: 150px;
    text-align: center;
}

.mobile-menu {
    display: none;
}

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

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

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

    .section-title {
        font-size: 28px;
    }

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

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

    .contact-form {
        padding: 30px;
    }

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