/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #ffffff;
    background: #1a1a1a;
    overflow-x: hidden;
    padding-top: 45px;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
}
.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.nav-logo h2 {
    color: #FFD700;
    font-weight: 700;
    font-size: 1.8rem;
}

.nav-logo img {
    height: 48px;
    width: auto;
    display: block;
}

.nav-menu {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #ffffff;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #FFD700;
}

/* 语言切换器 */
.language-switcher {
    position: relative;
}

.language-dropdown {
    position: relative;
}

.language-btn {
    background: transparent;
    border: 1px solid #333;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: #ffffff;
    transition: all 0.3s ease;
}

.language-btn:hover {
    border-color: #FFD700;
    color: #FFD700;
}

.language-btn i {
    font-size: 0.8rem;
}

.language-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: #2d2d2d;
    border: 1px solid #333;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    list-style: none;
    padding: 0.5rem 0;
    margin: 0.5rem 0 0 0;
    min-width: 120px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
}

.language-dropdown:hover .language-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-menu li {
    margin: 0;
}

.language-menu a {
    display: block;
    padding: 0.5rem 1rem;
    color: #ffffff;
    text-decoration: none;
    transition: background 0.3s ease;
    font-size: 0.9rem;
}

.language-menu a:hover {
    background: #333;
    color: #FFD700;
}

.language-menu a.active {
    background: #FFD700;
    color: #000000;
}

.btn-primary {
    background: linear-gradient(135deg, #FFD700, #FFA500);
    color: #000000;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(255, 107, 53, 0.3);
}



.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: #ffffff;
    margin: 3px 0;
    transition: 0.3s;
}

/* 英雄区域 */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
    color: white;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-graphic {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #FFD700, #FFA500);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    animation: float 6s ease-in-out infinite;
}

.hero-graphic i {
    color: #000;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* 通用部分样式 */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    color: #ffffff;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: #cccccc;
    margin-bottom: 3rem;
}

/* 关于我们 */
.about {
    padding: 80px 0;
    background: #1a1a1a;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #FFD700;
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    display: flex;
    align-items: center;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-year {
    background: #FFD700;
    color: #000000;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 600;
    min-width: 80px;
    text-align: center;
    z-index: 2;
}

.timeline-content {
    background: #2d2d2d;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    margin: 0 2rem;
    flex: 1;
    color: #ffffff;
}

.timeline-content h3 {
    color: #FFD700;
    margin-bottom: 0.5rem;
}

/* 团队部分 */
.team {
    padding: 80px 0;
    background: #2d2d2d;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.team-member {
    background: #1a1a1a;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    text-align: center;
    transition: transform 0.3s ease;
    color: #ffffff;
}

.team-member:hover {
    transform: translateY(-5px);
}

.member-avatar {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #FFD700, #FFA500);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 2rem;
    color: #000000;
    overflow: hidden;
}

.avatar-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.member-title {
    color: #FFD700;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.member-desc {
    color: #cccccc;
    font-size: 0.9rem;
}

/* 安全部分 */
.security {
    padding: 80px 0;
    background: #1a1a1a;
}

.security-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.security-text h3 {
    color: #FFD700;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.security-text p {
    margin-bottom: 2rem;
    color: #cccccc;
    line-height: 1.7;
}

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

.security-feature {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: #2d2d2d;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    color: #ffffff;
}

.security-feature i {
    color: #FFD700;
    font-size: 1.2rem;
}

.certificate-card {
    background: #2d2d2d;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    text-align: center;
    color: #ffffff;
}

.certificate-card i {
    font-size: 3rem;
    color: #FFD700;
    margin-bottom: 1rem;
}

.certificate-card h4 {
    color: #FFD700;
    margin-bottom: 1rem;
}





/* 学院部分 */
.academy {
    padding: 80px 0;
    background: #1a1a1a;
}

.academy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.academy-card {
    background: #2d2d2d;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
}

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

.card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #FFD700, #FFA500);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    font-size: 1.5rem;
    color: #000000;
}

.academy-card h3 {
    color: #ffffff;
    margin-bottom: 0.5rem;
}

.academy-card p {
    color: #cccccc;
    margin-bottom: 1rem;
}

.card-link {
    color: #FFD700;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.card-link:hover {
    color: #FFA500;
}

/* 联系我们 */
.contact {
    padding: 80px 0;
    background: #1a1a1a;
}

/* 联系信息卡片 */
.contact-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-bottom: 4rem;
}

.contact-card {
    background: #2d2d2d;
    border-radius: 16px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid #333;
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(255, 107, 53, 0.2);
    border-color: #FFD700;
}

.card-header {
    background: linear-gradient(135deg, #FFD700, #FFA500);
    color: #000000;
    padding: 1.5rem;
    text-align: center;
}

.card-header h3 {
    margin: 0.5rem 0 0 0;
    font-size: 1.2rem;
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: #000000;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.5rem;
    color: #FFD700;
}

.card-content {
    padding: 1.5rem;
    text-align: center;
    color: #ffffff;
}

.email {
    color: #FFD700;
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    word-break: break-all;
}

.response-time {
    color: #cccccc;
    font-size: 0.9rem;
    display: block;
    margin-bottom: 1rem;
}

.btn-copy {
    background: #1a1a1a;
    border: 1px solid #333;
    color: #ffffff;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-copy:hover {
    background: #FFD700;
    color: #000000;
    border-color: #FFD700;
}

.btn-copy.copied {
    background: #059669;
    color: white;
    border-color: #059669;
}

/* 联系底部区域 */
.contact-bottom {
    display: block;
}

.social-section {
    background: #2d2d2d;
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
}

.social-section h3 {
    color: #ffffff;
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
}

.social-section p {
    color: #cccccc;
    margin-bottom: 2rem;
}



.social-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background: #1a1a1a;
    border-radius: 8px;
    text-decoration: none;
    color: #ffffff;
    transition: all 0.3s ease;
    border: 1px solid #333;
}

.social-link:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
    border-color: #FFD700;
    background: #2a2a2a;
}

/* 为不同社交媒体添加特殊颜色 */

/* Instagram */
.social-link[href*="instagram"]:hover,
.social-link:has(.fa-instagram):hover {
    background: linear-gradient(135deg, #e4405f, #c13584);
    color: white;
    border-color: #e4405f;
    box-shadow: 0 8px 25px rgba(228, 64, 95, 0.3);
}

/* Facebook */
.social-link[href*="facebook"]:hover,
.social-link:has(.fa-facebook):hover {
    background: linear-gradient(135deg, #1877f2, #0d6efd);
    color: white;
    border-color: #1877f2;
    box-shadow: 0 8px 25px rgba(24, 119, 242, 0.3);
}

/* Discord */
.social-link[href*="discord"]:hover,
.social-link:has(.fa-discord):hover {
    background: linear-gradient(135deg, #5865f2, #4752c4);
    color: white;
    border-color: #5865f2;
    box-shadow: 0 8px 25px rgba(88, 101, 242, 0.3);
}

/* YouTube */
.social-link[href*="youtube"]:hover,
.social-link:has(.fa-youtube):hover {
    background: linear-gradient(135deg, #ff0000, #cc0000);
    color: white;
    border-color: #ff0000;
    box-shadow: 0 8px 25px rgba(255, 0, 0, 0.3);
}

/* TikTok */
.social-link[href*="tiktok"]:hover,
.social-link:has(.fa-tiktok):hover {
    background: linear-gradient(135deg, #000000, #25f4ee);
    color: white;
    border-color: #25f4ee;
    box-shadow: 0 8px 25px rgba(37, 244, 238, 0.3);
}

/* Twitter/X */
.social-link[href*="x.com"]:hover,
.social-link[href*="twitter"]:hover,
.social-link:has(.fa-x-twitter):hover {
    background: linear-gradient(135deg, #000000, #1da1f2);
    color: white;
    border-color: #1da1f2;
    box-shadow: 0 8px 25px rgba(29, 161, 242, 0.3);
}

/* Telegram */
.social-link[href*="telegram"]:hover,
.social-link[href*="t.me"]:hover,
.social-link:has(.fa-telegram):hover {
    background: linear-gradient(135deg, #0088cc, #0077b3);
    color: white;
    border-color: #0088cc;
    box-shadow: 0 8px 25px rgba(0, 136, 204, 0.3);
}

/* Medium */
.social-link[href*="medium"]:hover,
.social-link:has(.fa-medium):hover {
    background: linear-gradient(135deg, #000000, #333333);
    color: white;
    border-color: #000000;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

/* Luffa Group (users icon) */
.social-link[href*="luffa"]:hover,
.social-link:has(.fa-users):hover {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border-color: #667eea;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

/* 通用悬停效果增强 */
.social-link:hover i {
    transform: scale(1.1);
    transition: transform 0.3s ease;
}

.social-link:hover span {
    font-weight: 600;
    transition: font-weight 0.3s ease;
}

/* 页脚 */
.footer {
    background: #1f2937;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: #f9fafb;
}

.footer-section p {
    color: #d1d5db;
    margin-bottom: 1rem;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #d1d5db;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #FFD700;
}

/* Footer法律条款两列布局 */
.footer-legal-links ul {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem 1rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-legal-links ul li {
    margin: 0;
}

.footer-legal-links ul li a {
    display: block;
    padding: 0.25rem 0;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

/* 下载区域样式 */
.download-section {
    margin-top: 1rem;
}

.download-image {
    max-width: 200px;
    height: auto;
    border-radius: 8px;
    transition: transform 0.3s ease;
}

.download-image:hover {
    transform: scale(1.05);
}

.footer-social {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: #374151;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-social a:hover {
    background: #FFD700;
    color: #000000;
    transform: translateY(-2px) scale(1.1);
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.4);
    transition: all 0.3s ease;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 2rem;
    text-align: center;
    color: #9ca3af;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: #1a1a1a;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.3);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        flex-direction: row !important;
    }

    .timeline-content {
        margin-left: 3rem;
        margin-right: 0;
    }

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

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

    /* 移动端法律条款单列显示 */
    .footer-legal-links ul {
        grid-template-columns: 1fr;
        gap: 0.25rem;
    }





    .social-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }

    .social-link span {
        font-size: 0.9rem;
    }
    

    


    .language-btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
    }

    .language-btn .current-lang {
        display: none;
    }
    

}

/* 文章列表页样式 */
.articles-header {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    padding: 6rem 0 4rem 0;
    text-align: center;
    color: white;
    margin-top: -45px;
}

.page-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #FFD700, #FFA500);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-subtitle {
    font-size: 1.2rem;
    color: #cccccc;
    margin-bottom: 3rem;
}

.article-filters {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 25px;
}

.filter-btn {
    background: transparent;
    border: 2px solid #FFD700;
    color: #FFD700;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.filter-btn:hover,
.filter-btn.active {
    background: #FFD700;
    color: #000000;
}

.articles-list {
    padding: 4rem 0;
    background: #1a1a1a;
    position: relative;
    z-index: 1;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
    position: relative;
    z-index: 1;
}

.article-card {
    background: #2d2d2d;
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.3s ease;
    border: 1px solid #333;
    position: relative;
    z-index: 1;
}

.article-card:hover {
    transform: translateY(-5px);
    border-color: #FFD700;
}

.article-image {
    position: relative;
    height: 60px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding: 0 1rem;
}

.article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.article-card:hover .article-image img {
    transform: scale(1.05);
}

.article-category {
    position: static;
    background: #FFD700;
    color: #000000;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
}

.article-content {
    padding: 1rem;
    color: #ffffff;
}

.article-actions {
    margin-top: 0.75rem;
    text-align: center;
}

.article-actions .btn-primary {
    padding: 0.4rem 1.2rem;
    font-size: 0.85rem;
    border-radius: 6px;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75rem;
    font-size: 0.85rem;
    color: #cccccc;
}

.article-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    line-height: 1.3;
}

.article-title a {
    color: #ffffff;
    text-decoration: none;
    transition: color 0.3s ease;
}

.article-title a:hover {
    color: #FFD700;
}

.article-excerpt {
    color: #cccccc;
    line-height: 1.5;
    margin-bottom: 0.75rem;
    font-size: 0.9rem;
}

.article-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    background: #2d2d2d;
    color: #ffffff;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid #333;
}

/* 分页样式 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}

.page-btn {
    background: #2d2d2d;
    border: 1px solid #333;
    color: #ffffff;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.page-btn:hover:not(:disabled),
.page-btn.active {
    background: #FFD700;
    color: #000000;
    border-color: #FFD700;
}

.page-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.page-numbers {
    display: flex;
    gap: 0.25rem;
}

/* 文章详情页样式 */
.article-detail {
    padding: 4rem 0;
    background: #1a1a1a;
}

/* 返回按钮样式 */
.article-back-btn {
    display: inline-block;
    margin-right: 1rem;
}

.btn-back {
    background: transparent;
    border: 1px solid #333;
    color: #ffffff;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn-back:hover {
    border-color: #FFD700;
    color: #FFD700;
    transform: translateY(-2px);
}

.btn-back i {
    font-size: 0.8rem;
}

/* 文章标题和返回按钮的布局 */
.article-title-container {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.article-title {
    margin: 0;
    flex: 1;
}

.article-content {
    background: #2d2d2d;
    border-radius: 12px;
    padding: 3rem;
    margin-bottom: 3rem;
}

.article-header {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #333;
}

.article-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.article-category {
    background: #FFD700;
    color: #000000;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-weight: 500;
}

.article-date {
    color: #cccccc;
}

.article-title {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: #ffffff;
}

.article-author {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #cccccc;
    font-size: 0.9rem;
}

.article-body {
    line-height: 1.8;
    color: #ffffff;
    font-size: 1.1rem;
}

.article-body h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 2rem 0 1rem 0;
    color: #ffffff;
}

.article-body p {
    margin-bottom: 1.5rem;
}

.article-body ul {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

.article-body li {
    margin-bottom: 0.5rem;
}

.article-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid #333;
}

.article-share {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.share-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: #1a1a1a;
    color: #ffffff;
    border-radius: 50%;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 1px solid #333;
}

.share-btn:hover {
    background: #FFD700;
    color: #000000;
    transform: translateY(-2px);
}

/* 相关文章样式 */
.related-articles {
    background: #2d2d2d;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    border: 1px solid #333;
}

.related-articles h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #ffffff;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.related-article {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    border-radius: 8px;
    transition: background 0.3s ease;
}

.related-article:hover {
    background: #1a1a1a;
}

.related-image {
    width: 80px;
    height: 80px;
    border-radius: 8px;
    overflow: hidden;
    flex-shrink: 0;
}

.related-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.related-content {
    flex: 1;
}

.related-content h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.related-content h4 a {
    color: #ffffff;
    text-decoration: none;
    transition: color 0.3s ease;
}

.related-content h4 a:hover {
    color: #FFD700;
}

.related-content p {
    color: #cccccc;
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 0.5rem;
}

.related-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.8rem;
    color: #999;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .page-title {
        font-size: 2rem;
    }
    
    .article-filters {
        gap: 0.5rem;
    }
    
    .filter-btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
    }
    
    .article-content {
        padding: 2rem;
    }
    
    .article-title {
        font-size: 1.8rem;
    }
    
    .article-footer {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .related-grid {
        grid-template-columns: 1fr;
    }
    
    .related-article {
        flex-direction: column;
    }
    
    .related-image {
        width: 100%;
        height: 150px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        padding: 100px 0 60px;
    }

    .hero-title {
        font-size: 1.8rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

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

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

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

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

    .social-link {
        padding: 0.75rem;
        transition: all 0.3s ease;
    }

    .social-link:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
    }

    .social-link span {
        font-size: 0.85rem;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #1a1a1a;
}

::-webkit-scrollbar-thumb {
    background: #FFD700;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #FFA500;
}

/* Document categories styles */
.document-categories {
    background: #1a1a1a;
    padding: 40px 0;
    border-bottom: 1px solid #333;
}

.category-navigation {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.primary-categories {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
}

.secondary-categories {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
    padding-top: 20px;
    border-top: 1px solid #333;
}

.primary-category-btn,
.secondary-category-btn {
    background: #2d2d2d;
    border: 2px solid #333;
    color: #cccccc;
    padding: 12px 20px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 500;
}

.primary-category-btn:hover,
.secondary-category-btn:hover {
    background: #FFD700;
    border-color: #FFD700;
    color: #000000;
    transform: translateY(-2px);
}

.primary-category-btn.active,
.secondary-category-btn.active {
    background: #FFD700;
    border-color: #FFD700;
    color: #000000;
}

.primary-category-btn i,
.secondary-category-btn i {
    font-size: 1rem;
}

/* Breadcrumb styles */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 30px;
    padding: 15px 0;
    border-bottom: 1px solid #333;
}

.breadcrumb-item {
    color: #cccccc;
    text-decoration: none;
    font-size: 0.9rem;
}

.breadcrumb-item:hover {
    color: #FFD700;
}

.breadcrumb i {
    color: #666;
    font-size: 0.8rem;
}

/* No articles styles */
.no-articles {
    text-align: center;
    padding: 60px 20px;
    color: #cccccc;
}

.no-articles i {
    font-size: 4rem;
    color: #666;
    margin-bottom: 20px;
}

.no-articles h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: #ffffff;
}

.no-articles p {
    font-size: 1rem;
    color: #999;
}

/* Error message styles */
.error-message {
    text-align: center;
    padding: 60px 20px;
    color: #cccccc;
}

.error-message i {
    font-size: 4rem;
    color: #FFD700;
    margin-bottom: 20px;
}

.error-message h2 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: #ffffff;
}

.error-message p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    color: #999;
}

.error-message .btn-primary {
    background: #FFD700;
    color: #000000;
    padding: 12px 30px;
    border-radius: 8px;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s ease;
}

.error-message .btn-primary:hover {
    background: #ff8c42;
    transform: translateY(-2px);
}

/* Related articles styles */
.related-articles {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid #333;
}

.related-articles h3 {
    font-size: 1.8rem;
    margin-bottom: 30px;
    color: #ffffff;
}

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

.related-article-card {
    background: #2d2d2d;
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid #333;
}

.related-article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(255, 107, 53, 0.2);
    border-color: #FFD700;
}

.related-article-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.related-article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.related-article-card:hover .related-article-image img {
    transform: scale(1.05);
}

.related-article-content {
    padding: 20px;
}

.related-article-title {
    font-size: 1.1rem;
    margin-bottom: 10px;
    line-height: 1.4;
}

.related-article-title a {
    color: #ffffff;
    text-decoration: none;
    transition: color 0.3s ease;
}

.related-article-title a:hover {
    color: #FFD700;
}

.related-article-meta {
    display: flex;
    gap: 15px;
    margin-bottom: 10px;
    font-size: 0.8rem;
    color: #999;
}

.related-article-excerpt {
    color: #cccccc;
    font-size: 0.9rem;
    line-height: 1.5;
}

.no-related {
    text-align: center;
    color: #999;
    font-style: italic;
    padding: 40px 20px;
}

/* Document responsive styles */
@media (max-width: 768px) {
    .primary-categories,
    .secondary-categories {
        gap: 10px;
    }
    
    .primary-category-btn,
    .secondary-category-btn {
        padding: 10px 15px;
        font-size: 0.8rem;
    }
    
    .related-grid {
        grid-template-columns: 1fr;
    }
    
    .breadcrumb {
        flex-wrap: wrap;
        gap: 5px;
    }
    
    .breadcrumb-item {
        font-size: 0.8rem;
    }
}

/* 产品服务页面样式 */
.products-section {
    padding: 60px 0;
    background: #1a1a1a;
}

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

.product-card {
    background: #2d2d2d;
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #333;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(255, 107, 53, 0.2);
    border-color: #FFD700;
}

.product-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, #FFD700, #ff8c42);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.product-icon i {
    font-size: 2rem;
    color: #000000;
}

.product-card h3 {
    color: #ffffff;
    font-size: 1.5rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.product-card p {
    color: #cccccc;
    margin-bottom: 20px;
    line-height: 1.6;
}

.product-features {
    list-style: none;
    padding: 0;
    margin-bottom: 25px;
    text-align: left;
}

.product-features li {
    color: #cccccc;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
}

.product-features i {
    color: #FFD700;
    margin-right: 10px;
    font-size: 0.9rem;
}

.product-btn {
    background: linear-gradient(45deg, #FFD700, #ff8c42);
    color: #000000;
    padding: 12px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-block;
}

.product-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 107, 53, 0.3);
}

/* 支持中心页面样式 */
.support-section {
    padding: 60px 0;
    background: #1a1a1a;
}

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

.support-card {
    background: #2d2d2d;
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #333;
}

.support-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(255, 107, 53, 0.2);
    border-color: #FFD700;
}

.support-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, #FFD700, #ff8c42);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.support-icon i {
    font-size: 2rem;
    color: #000000;
}

.support-card h3 {
    color: #ffffff;
    font-size: 1.5rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.support-card p {
    color: #cccccc;
    margin-bottom: 20px;
    line-height: 1.6;
}

.support-features {
    list-style: none;
    padding: 0;
    margin-bottom: 25px;
    text-align: left;
}

.support-features li {
    color: #cccccc;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
}

.support-features i {
    color: #FFD700;
    margin-right: 10px;
    font-size: 0.9rem;
}

.support-btn {
    background: linear-gradient(45deg, #FFD700, #ff8c42);
    color: #000000;
    padding: 12px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-block;
}

.support-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 107, 53, 0.3);
}

/* 法律条款页面样式 */
.legal-section {
    padding: 60px 0;
    background: #1a1a1a;
}

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

.legal-card {
    background: #2d2d2d;
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #333;
}

.legal-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(255, 107, 53, 0.2);
    border-color: #FFD700;
}

.legal-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, #FFD700, #ff8c42);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.legal-icon i {
    font-size: 2rem;
    color: #000000;
}

.legal-card h3 {
    color: #ffffff;
    font-size: 1.5rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.legal-card p {
    color: #cccccc;
    margin-bottom: 20px;
    line-height: 1.6;
}

.legal-features {
    list-style: none;
    padding: 0;
    margin-bottom: 25px;
    text-align: left;
}

.legal-features li {
    color: #cccccc;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
}

.legal-features i {
    color: #FFD700;
    margin-right: 10px;
    font-size: 0.9rem;
}

.legal-btn {
    background: linear-gradient(45deg, #FFD700, #ff8c42);
    color: #000000;
    padding: 12px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-block;
}

.legal-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 107, 53, 0.3);
}

/* 社交媒体页面样式 */
.social-section {
    padding: 60px 0;
    background: #1a1a1a;
}

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

.social-card {
    background: #2d2d2d;
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #333;
}

.social-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(255, 215, 0, 0.3);
    border-color: #FFD700;
    background: #333333;
}

.social-card:hover .social-icon {
    transform: scale(1.1);
    box-shadow: 0 8px 25px rgba(255, 215, 0, 0.4);
    transition: all 0.3s ease;
}

.social-card:hover .social-icon i {
    transform: scale(1.1);
    transition: transform 0.3s ease;
}

.social-card:hover h3 {
    color: #FFD700;
    transition: color 0.3s ease;
}

.social-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, #FFD700, #ff8c42);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    transition: all 0.3s ease;
}

.social-icon i {
    font-size: 2rem;
    color: #000000;
    transition: transform 0.3s ease;
}

.social-card h3 {
    color: #ffffff;
    font-size: 1.5rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.social-card p {
    color: #cccccc;
    margin-bottom: 20px;
    line-height: 1.6;
}

.social-btn {
    background: linear-gradient(45deg, #FFD700, #ff8c42);
    color: #000000;
    padding: 12px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-block;
}

.social-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 215, 0, 0.4);
    background: linear-gradient(45deg, #ff8c42, #FFD700);
}

/* 页面头部样式 */
.page-header {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    padding: 80px 0;
    text-align: center;
    border-bottom: 1px solid #333;
}

.page-title {
    color: #ffffff;
    font-size: 3rem;
    margin-bottom: 15px;
    font-weight: 700;
}

.page-subtitle {
    color: #cccccc;
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}