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

body {
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
    line-height: 1.8;
    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: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

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

.logo {
    font-size: 28px;
    font-weight: bold;
    color: #f0b90b;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo span {
    font-size: 32px;
}

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

nav ul li a {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    padding: 8px 16px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

nav ul li a:hover {
    background: #f0b90b;
    color: #1a1a2e;
}

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

.banner::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(240,185,11,0.1)" stroke-width="0.5"/></svg>');
    background-size: 200px 200px;
    opacity: 0.5;
}

.banner h1 {
    font-size: 48px;
    margin-bottom: 20px;
    color: #f0b90b;
    position: relative;
}

.banner p {
    font-size: 20px;
    max-width: 800px;
    margin: 0 auto 30px;
    position: relative;
}

.download-btn {
    display: inline-block;
    background: linear-gradient(135deg, #f0b90b 0%, #f5a623 100%);
    color: #1a1a2e;
    padding: 16px 48px;
    border-radius: 50px;
    font-size: 18px;
    font-weight: bold;
    text-decoration: none;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
}

.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(240,185,11,0.4);
}

.section {
    padding: 60px 0;
}

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

.section-title::after {
    content: "";
    display: block;
    width: 80px;
    height: 4px;
    background: #f0b90b;
    margin: 15px auto 0;
    border-radius: 2px;
}

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

.feature-card {
    background: #fff;
    padding: 40px 30px;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    text-align: center;
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
}

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

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

.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: 12px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s ease;
}

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

.product-img {
    height: 200px;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 80px;
}

.product-info {
    padding: 25px;
}

.product-info h3 {
    font-size: 20px;
    color: #1a1a2e;
    margin-bottom: 10px;
}

.product-info p {
    color: #666;
    font-size: 14px;
    margin-bottom: 15px;
}

.product-link {
    color: #f0b90b;
    text-decoration: none;
    font-weight: bold;
}

.news-list {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.news-item {
    padding: 30px;
    border-bottom: 1px solid #eee;
    transition: background 0.3s ease;
}

.news-item:hover {
    background: #f8f9fa;
}

.news-item:last-child {
    border-bottom: none;
}

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

.news-item h3 {
    font-size: 20px;
    color: #1a1a2e;
    margin-bottom: 10px;
}

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

.news-item h3 a:hover {
    color: #f0b90b;
}

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

.contact-section {
    background: #fff;
    border-radius: 12px;
    padding: 50px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 8px;
}

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

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

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

.contact-form {
    display: grid;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 16px;
    color: #1a1a2e;
    font-weight: bold;
}

.form-group input,
.form-group textarea {
    padding: 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #f0b90b;
}

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

.submit-btn {
    background: linear-gradient(135deg, #f0b90b 0%, #f5a623 100%);
    color: #1a1a2e;
    padding: 16px 48px;
    border: none;
    border-radius: 50px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(240,185,11,0.4);
}

footer {
    background: #1a1a2e;
    color: #fff;
    padding: 50px 0 20px;
    margin-top: 60px;
}

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

.footer-section h4 {
    font-size: 20px;
    color: #f0b90b;
    margin-bottom: 20px;
}

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

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

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

.footer-section ul li a:hover {
    color: #f0b90b;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #333;
    color: #888;
    font-size: 14px;
}

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

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    text-align: center;
}

.stat-item {
    padding: 30px;
}

.stat-number {
    font-size: 48px;
    font-weight: bold;
    color: #f0b90b;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 18px;
    color: #ccc;
}

.about-content {
    background: #fff;
    border-radius: 12px;
    padding: 50px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.about-content h2 {
    font-size: 28px;
    color: #1a1a2e;
    margin-bottom: 20px;
}

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

.about-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.about-feature {
    padding: 30px;
    background: #f8f9fa;
    border-radius: 12px;
}

.about-feature h4 {
    font-size: 20px;
    color: #1a1a2e;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

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

.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: #f0b90b;
}

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

.breadcrumb {
    padding: 15px 0;
    background: #fff;
    border-bottom: 1px solid #eee;
}

.breadcrumb ul {
    display: flex;
    list-style: none;
    gap: 10px;
    font-size: 14px;
}

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

.breadcrumb ul li a:hover {
    color: #f0b90b;
}

.breadcrumb ul li::after {
    content: " /";
    color: #999;
}

.breadcrumb ul li:last-child::after {
    content: "";
}

.page-content {
    padding: 60px 0;
}

.advantages {
    background: #fff;
    border-radius: 12px;
    padding: 50px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.advantages h2 {
    font-size: 28px;
    color: #1a1a2e;
    text-align: center;
    margin-bottom: 40px;
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.advantage-item {
    display: flex;
    gap: 20px;
    padding: 25px;
    background: #f8f9fa;
    border-radius: 12px;
    transition: transform 0.3s ease;
}

.advantage-item:hover {
    transform: translateX(10px);
}

.advantage-icon {
    font-size: 40px;
    flex-shrink: 0;
}

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

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

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

    nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }

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

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

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

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

    .contact-section {
        padding: 30px 20px;
    }

    .about-content {
        padding: 30px 20px;
    }

    .advantages {
        padding: 30px 20px;
    }
}

.crypto-prices {
    background: #fff;
    padding: 40px 0;
    border-bottom: 1px solid #eee;
}

.prices-grid {
    display: flex;
    justify-content: center;
    gap: 50px;
    flex-wrap: wrap;
}

.price-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 25px;
    background: #f8f9fa;
    border-radius: 50px;
}

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

.price-info {
    display: flex;
    flex-direction: column;
}

.price-name {
    font-size: 14px;
    color: #999;
}

.price-value {
    font-size: 18px;
    font-weight: bold;
    color: #1a1a2e;
}

.price-up {
    color: #52c41a;
}

.price-down {
    color: #ff4d4f;
}

.testimonials {
    background: #fff;
    padding: 60px 0;
}

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

.testimonial-card {
    padding: 40px;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    border-radius: 12px;
    color: #fff;
}

.testimonial-text {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 20px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.author-avatar {
    font-size: 40px;
}

.author-info {
    display: flex;
    flex-direction: column;
}

.author-name {
    font-size: 18px;
    font-weight: bold;
    color: #f0b90b;
}

.author-title {
    font-size: 14px;
    color: #ccc;
}

.how-to-use {
    background: #fff;
    border-radius: 12px;
    padding: 50px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.how-to-use h2 {
    font-size: 28px;
    color: #1a1a2e;
    text-align: center;
    margin-bottom: 40px;
}

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

.step-item {
    text-align: center;
    padding: 30px;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #f0b90b 0%, #f5a623 100%);
    color: #1a1a2e;
    font-size: 24px;
    font-weight: bold;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

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

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

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

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

.guarantee-item {
    text-align: center;
    padding: 40px 30px;
    background: rgba(255,255,255,0.1);
    border-radius: 12px;
    border: 1px solid rgba(240,185,11,0.3);
}

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

.guarantee-item h4 {
    font-size: 22px;
    color: #f0b90b;
    margin-bottom: 15px;
}

.guarantee-item p {
    color: #ccc;
    font-size: 15px;
}

.faq-section {
    background: #fff;
    border-radius: 12px;
    padding: 50px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.faq-section h2 {
    font-size: 28px;
    color: #1a1a2e;
    text-align: center;
    margin-bottom: 40px;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid #eee;
    padding: 25px 0;
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-question {
    font-size: 18px;
    color: #1a1a2e;
    font-weight: bold;
    margin-bottom: 15px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.faq-question span {
    color: #f0b90b;
}

.faq-answer {
    color: #666;
    font-size: 15px;
    line-height: 1.8;
    padding-left: 30px;
}

.partner-section {
    background: #f8f9fa;
    padding: 60px 0;
}

.partner-section h2 {
    font-size: 28px;
    color: #1a1a2e;
    text-align: center;
    margin-bottom: 40px;
}

.partners-grid {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 40px;
}

.partner-item {
    padding: 20px 40px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    font-size: 24px;
    color: #1a1a2e;
}