/* 全局样式 */
:root {
    --primary-color: #042a83;
    --secondary-color: #53627f;
    --accent-color: #fcc800;
    --dark-color: #394356;
    --light-color: #f8f9fa;
    --gray-color: #e9ecef;
    --text-color: #333333;
    --text-light: #6c757d;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-color);
}

a {
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--primary-color);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
    text-align: center;
}

.btn:hover {
    background-color: #031d5e;
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-secondary {
    background-color: var(--secondary-color);
}

.btn-secondary:hover {
    background-color: #455169;
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary {
    background-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: #fcc800;
}

section {
    padding: 60px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--dark-color);
}

.section-description {
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
}

/* 导航栏样式 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: white;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.header.sticky {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

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

.logo img {
    height: 40px;
    margin-right: 10px;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-list {
    display: flex;
    align-items: center;
}

.nav-item {
    margin: 0 15px;
}

.nav-link {
    font-weight: 500;
    position: relative;
    padding: 5px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-btn {
    margin-left: 15px;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    cursor: pointer;
    z-index: 1001;
    position: relative;
}

.mobile-menu-toggle span {
    display: block;
    height: 3px;
    width: 100%;
    background-color: var(--primary-color);
    border-radius: 3px;
    transition: var(--transition);
    position: absolute;
}

.mobile-menu-toggle span:nth-child(1) {
    top: 0;
}

.mobile-menu-toggle span:nth-child(2) {
    top: 9px;
}

.mobile-menu-toggle span:nth-child(3) {
    top: 18px;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

/* 下拉菜单样式 */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
}

.dropdown-toggle i {
    margin-left: 5px;
    transition: var(--transition);
}

.dropdown.active .dropdown-toggle i {
    transform: rotate(180deg);
}

.dropdown-content {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 180px;
    background-color: white;
    border-radius: 5px;
    box-shadow: var(--shadow);
    padding: 10px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    z-index: 100;
}

.dropdown.active .dropdown-content {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    padding: 8px 20px;
    display: block;
    white-space: nowrap;
}

.dropdown-item:hover {
    background-color: rgba(4, 42, 131, 0.1);
    color: var(--primary-color);
}

/* 英雄区/轮播图样式 */
.hero-section {
    padding-top: 100px;
    background-color: #f8f9fa;
}

.slider-container {
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(4, 42, 131, 0.1);
}

.slider {
    position: relative;
    height: 400px;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
    display: flex;
    align-items: center;
    padding: 0 10%;
    background-size: cover;
    background-position: center;
}

.slide.current {
    opacity: 1;
    z-index: 1;
}

.slide-content {
    max-width: 50%;
    color: white;
    text-shadow: 1px 1px 10px rgba(0, 0, 0, 0.5);
}

.slide-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 15px;
}

.slide-description {
    margin-bottom: 20px;
}

.slider-buttons {
    position: absolute;
    bottom: 20px;
    right: 20px;
    z-index: 100;
    display: flex;
}

.prev-btn, .next-btn {
    width: 40px;
    height: 40px;
    background-color: var(--accent-color);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 5px;
    cursor: pointer;
    transition: var(--transition);
    color: var(--dark-color);
}

.prev-btn:hover, .next-btn:hover {
    background-color: #e3b400;
}

.slider-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    z-index: 100;
}

.dot {
    width: 12px;
    height: 12px;
    background-color: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    margin: 0 5px;
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background-color: var(--accent-color);
}

/* 热门作品区样式 */
.trending-section {
    background-color: #f8f9fa;
}

.trending-categories {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
}

.tab-header {
    padding: 10px 20px;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: var(--transition);
    font-weight: 500;
}

.tab-header.active {
    border-bottom-color: var(--primary-color);
    color: var(--primary-color);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.5s forwards;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.product-card {
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    transform: translateY(20px);
    opacity: 0;
    border: 1px solid rgba(4, 42, 131, 0.1);
}

.product-card.fade-in {
    transform: translateY(0);
    opacity: 1;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

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

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.product-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    background-color: var(--accent-color);
    color: var(--dark-color);
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.product-details {
    padding: 20px;
}

.product-title {
    font-weight: 600;
    margin-bottom: 5px;
    transition: var(--transition);
}

.product-creator {
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 10px;
}

.product-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-light);
    font-size: 14px;
}

.product-price {
    font-weight: 700;
    color: var(--primary-color);
}

.more-btn-container {
    text-align: center;
    margin-top: 40px;
}

/* 作品分类区样式 */
.categories-section {
    background-color: #f8f9fa;
    padding: 40px 0;
}

.categories-section .section-header {
    margin-bottom: 25px;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.category-card {
    position: relative;
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: row;
    align-items: center;
    padding: 15px;
    height: 100%;
    text-align: left;
}

.category-card:hover {
    transform: translateY(-2px);
    border-left: none;
    border-bottom: 2px solid var(--primary-color);
}

.category-card:hover .category-title {
    white-space: normal;
    overflow: visible;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    height: auto;
}

.category-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-right: 15px;
    transition: var(--transition);
    width: 50px;
    height: 50px;
    min-width: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(4, 42, 131, 0.1);
    border-radius: 50%;
}

.category-card:hover .category-icon {
    transform: scale(1.1);
    color: var(--accent-color);
}

.category-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
}

.category-title {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 5px;
    color: var(--dark-color);
    transition: var(--transition);
}

.category-card:hover .category-title {
    color: var(--primary-color);
}

.category-count {
    font-size: 12px;
    color: var(--text-light);
    background-color: var(--gray-color);
    padding: 3px 8px;
    border-radius: 15px;
    font-weight: 500;
}

/* 会员特权区样式 */
.benefits-section {
    background-color: #f8f9fa;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.benefit-card {
    background-color: white;
    border-radius: 10px;
    box-shadow: var(--shadow);
    padding: 30px;
    text-align: center;
    transition: var(--transition);
    transform: translateY(20px);
    opacity: 0;
    border: 1px solid rgba(4, 42, 131, 0.1);
}

.benefit-card.fade-in {
    transform: translateY(0);
    opacity: 1;
}

.benefit-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.benefit-icon {
    width: 60px;
    height: 60px;
    background-color: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--dark-color);
    font-size: 24px;
    transition: var(--transition);
}

.benefit-card:hover .benefit-icon {
    transform: scale(1.1);
}

.benefit-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--dark-color);
}

.benefit-description {
    color: var(--text-light);
    line-height: 1.5;
}

/* 社区功能区样式 */
.community-section {
    background-color: white;
}

.community-container {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}

.community-image {
    flex: 1;
    min-width: 300px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid rgba(4, 42, 131, 0.1);
}

.community-features {
    flex: 1;
    min-width: 300px;
    padding: 0 30px;
    display: flex;
    flex-direction: column;
}

.community-feature {
    display: flex;
    align-items: flex-start;
    margin-bottom: 30px;
    transform: translateX(30px);
    opacity: 0;
    transition: var(--transition);
}

.community-feature.slide-right {
    transform: translateX(0);
    opacity: 1;
}

.feature-icon {
    min-width: 50px;
    height: 50px;
    background-color: var(--secondary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    color: white;
    font-size: 20px;
}

.feature-content h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
}

.feature-content p {
    color: var(--text-light);
}

/* 常见问题区样式 */
.faq-section {
    background-color: #f8f9fa;
}

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

.faq-item {
    border-bottom: 1px solid var(--gray-color);
    margin-bottom: 10px;
}

.faq-question {
    padding: 15px 0;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--primary-color);
}

.faq-question i {
    transition: var(--transition);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    color: var(--text-light);
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 0 0 15px;
}

.faq-item.active .faq-question {
    color: var(--primary-color);
}

/* 订阅区样式 */
.newsletter-section {
    background-color: var(--primary-color);
    background-image: linear-gradient(135deg, var(--primary-color) 0%, #031d5e 100%);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
    padding: 70px 0;
    box-shadow: inset 0 5px 15px rgba(0, 0, 0, 0.1), inset 0 -5px 15px rgba(0, 0, 0, 0.1);
}

.newsletter-section::before {
    content: '';
    position: absolute;
    top: -50px;
    right: -50px;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background-color: rgba(252, 200, 0, 0.1);
    z-index: 1;
}

.newsletter-section::after {
    content: '';
    position: absolute;
    bottom: -80px;
    left: -80px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background-color: rgba(252, 200, 0, 0.05);
    z-index: 1;
}

.newsletter-section .container {
    position: relative;
    z-index: 5;
}

.newsletter-section .section-title {
    color: white;
    font-weight: 700;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    margin-bottom: 15px;
}

.newsletter-section .section-description {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    max-width: 700px;
    margin: 0 auto 20px;
    font-size: 17px;
}

.newsletter-form {
    max-width: 600px;
    margin: 30px auto 0;
    display: flex;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    border-radius: 5px;
    position: relative;
    z-index: 10;
}

.newsletter-input {
    flex-grow: 1;
    padding: 16px 20px;
    border: none;
    border-radius: 5px 0 0 5px;
    font-size: 16px;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
}

.newsletter-btn {
    background-color: var(--accent-color);
    color: var(--dark-color);
    font-weight: 700;
    border: none;
    border-radius: 0 5px 5px 0;
    padding: 0 30px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.newsletter-btn:hover {
    background-color: #e3b400;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* 页脚样式 */
.footer {
    background-color: var(--dark-color);
    color: white;
    padding: 40px 0 20px;
}

.footer-top {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
    flex: 0 0 250px;
    margin-bottom: 20px;
}

.footer-logo img {
    height: 40px;
    margin-bottom: 10px;
}

.footer-logo p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.4;
}

.footer-links {
    flex: 1;
    display: flex;
    justify-content: space-around;
    max-width: 500px;
}

.footer-links-group {
    display: flex;
    flex-direction: column;
}

.footer-social {
    flex: 0 0 200px;
    margin-bottom: 20px;
}

.footer-social p {
    margin-bottom: 15px;
    font-weight: 500;
}

.footer-link {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 10px;
    transition: var(--transition);
    font-size: 14px;
}

.footer-link:hover {
    color: var(--primary-color);
    transform: translateX(3px);
}

.social-links {
    display: flex;
}

.social-link {
    width: 36px;
    height: 36px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 10px;
    transition: var(--transition);
    color: white;
    font-size: 16px;
}

.social-link:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 13px;
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式样式 */
@media (max-width: 992px) {
    .section-title {
        font-size: 28px;
    }
    
    .hero-section {
        padding-top: 80px;
    }
    
    .slider {
        height: 350px;
    }
    
    .slide-content {
        max-width: 70%;
    }
    
    .slide-title {
        font-size: 28px;
    }
    
    .community-container {
        flex-direction: column;
    }
    
    .community-image, .community-features {
        width: 100%;
    }
    
    .community-image {
        margin-bottom: 30px;
    }
    
    .benefit-icon {
        width: 55px;
        height: 55px;
        font-size: 22px;
    }
    
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .category-icon {
        font-size: 1.8rem;
        width: 45px;
        height: 45px;
        min-width: 45px;
    }
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-list {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background-color: white;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        padding: 80px 30px 30px;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
        transition: right 0.3s ease;
        z-index: 1000;
    }
    
    .nav-list.active {
        right: 0;
    }
    
    .nav-item.nav-btn {
        margin: 20px 0;
    }
    
    .nav-item.nav-btn .btn {
        display: block;
        width: 100%;
        padding: 12px 20px;
        text-align: center;
        font-size: 16px;
    }
    
    .dropdown-content {
        position: static;
        box-shadow: none;
        padding-left: 20px;
        margin-top: 10px;
        display: none;
        opacity: 1;
        visibility: visible;
        transform: none;
    }
    
    .dropdown.active .dropdown-content {
        display: block;
    }
    
    .slider {
        height: 300px;
    }
    
    .slide-content {
        max-width: 90%;
    }
    
    .slide-title {
        font-size: 24px;
    }
    
    .product-grid, .category-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
    
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .newsletter-input {
        border-radius: 5px;
        margin-bottom: 10px;
    }
    
    .newsletter-btn {
        border-radius: 5px;
        padding: 15px;
    }
    
    .benefit-icon {
        width: 50px;
        height: 50px;
        font-size: 20px;
        margin-bottom: 15px;
    }
    
    .benefit-title {
        font-size: 18px;
    }
    
    .category-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 6px;
    }
    
    .category-card {
        padding: 8px 5px;
        flex-direction: column;
        text-align: center;
        align-items: center;
    }
    
    .category-icon {
        margin-right: 0;
        margin-bottom: 8px;
        font-size: 1.5rem;
        width: 40px;
        height: 40px;
        min-width: auto;
    }
    
    .category-content {
        align-items: center;
    }
    
    .category-title {
        font-size: 13px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        width: 100%;
        text-align: center;
    }
    
    .category-count {
        margin-top: 2px;
    }
    
    .footer-top {
        flex-direction: column;
    }
    
    .footer-logo, .footer-links, .footer-social {
        flex: 0 0 100%;
        max-width: 100%;
        margin-bottom: 25px;
    }
    
    .footer-links {
        justify-content: space-between;
    }
    
    .community-features {
        display: flex;
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: space-between;
        padding: 0;
    }
    
    .community-feature {
        width: calc(50% - 10px);
        margin-bottom: 20px;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .feature-icon {
        margin-right: 0;
        margin-bottom: 15px;
    }
    
    .feature-content {
        width: 100%;
    }
    
    .feature-content h3 {
        font-size: 16px;
        margin-bottom: 5px;
    }
    
    .feature-content p {
        font-size: 14px;
        line-height: 1.4;
    }
    
    .category-card:hover {
        transform: translateY(-2px);
        border-left: none;
        border-bottom: 2px solid var(--primary-color);
    }
    
    .category-card:hover .category-title {
        white-space: normal;
        overflow: visible;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        height: auto;
    }
}

@media (max-width: 576px) {
    section {
        padding: 40px 0;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .slider {
        height: 250px;
    }
    
    .slide-title {
        font-size: 20px;
    }
    
    .product-grid, .category-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .benefit-card {
        padding: 20px 15px;
    }
    
    .benefit-icon {
        width: 45px;
        height: 45px;
        font-size: 18px;
        margin-bottom: 10px;
    }
    
    .benefit-title {
        font-size: 16px;
        margin-bottom: 5px;
    }
    
    .benefit-description {
        font-size: 14px;
    }
    
    .category-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 6px;
    }
    
    .category-card {
        padding: 8px 4px;
        margin-bottom: 0;
        border-radius: 6px;
    }
    
    .category-icon {
        font-size: 1.2rem;
        width: 32px;
        height: 32px;
        margin-bottom: 5px;
    }
    
    .category-title {
        font-size: 12px;
        margin-bottom: 1px;
    }
    
    .category-count {
        font-size: 9px;
        padding: 1px 4px;
        border-radius: 8px;
    }
    
    .footer {
        padding: 30px 0 15px;
    }
    
    .footer-links {
        flex-direction: column;
    }
    
    .footer-links-group {
        margin-bottom: 15px;
    }
    
    .footer-link {
        margin-bottom: 8px;
    }
    
    .social-link {
        width: 32px;
        height: 32px;
    }
    
    .community-feature {
        width: calc(50% - 8px);
        margin-bottom: 16px;
    }
    
    .feature-icon {
        width: 45px;
        /* height: 45px; */
        font-size: 18px;
        margin-bottom: 10px;
    }
    
    .feature-content h3 {
        font-size: 15px;
        margin-bottom: 3px;
    }
    
    .feature-content p {
        font-size: 13px;
        line-height: 1.3;
    }
}

/* 移动设备适配增强 */
@media (max-width: 480px) {
    .category-card {
        padding: 8px 4px;
        margin-bottom: 0;
        border-radius: 6px;
    }
    
    .category-icon {
        font-size: 1.2rem;
        width: 32px;
        height: 32px;
        margin-bottom: 5px;
    }
    
    .category-title {
        font-size: 12px;
        margin-bottom: 1px;
    }
    
    .category-count {
        font-size: 9px;
        padding: 1px 4px;
        border-radius: 8px;
    }
    
    .section-header {
        margin-bottom: 20px;
    }
    
    .section-title {
        font-size: 20px;
    }
    
    .section-description {
        font-size: 13px;
    }
}

/* 处理超小屏幕设备 */
@media (max-width: 320px) {
    .category-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 4px;
    }
    
    .category-card {
        padding: 5px 2px;
    }
    
    .category-icon {
        font-size: 1rem;
        width: 24px;
        height: 24px;
        margin-bottom: 3px;
    }
    
    .category-title {
        font-size: 10px;
        margin-bottom: 0;
    }
    
    .category-count {
        font-size: 8px;
        padding: 0 3px;
    }
}

/* 优化分类区域在移动设备上的滚动性能 */
@media (max-width: 768px) {
    .categories-section {
        padding: 30px 0;
        overflow-x: hidden;
    }
    
    .category-grid {
        will-change: transform;
        -webkit-overflow-scrolling: touch;
    }
    
    .category-card {
        -webkit-tap-highlight-color: transparent;
        will-change: transform;
    }
}

/* 处理触摸设备的悬停状态 */
@media (hover: none) {
    .category-card:hover {
        transform: none;
        box-shadow: var(--shadow);
        border-left: none;
        border-bottom: none;
    }
    
    .category-card:active {
        transform: scale(0.98);
        background-color: rgba(4, 42, 131, 0.05);
    }
    
    .category-icon {
        transition: transform 0.2s ease;
    }
    
    .category-card:active .category-icon {
        transform: scale(1.1);
    }
}

/* 友情链接样式 */
.friend-links {
    padding: 20px 0;
    margin-top: 20px;
}

.friend-links-title {
    font-size: 16px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 15px;
    text-align: center;
}

.friend-links-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
}

.friend-link {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    transition: color 0.3s ease;
    text-decoration: none;
}

.friend-link:hover {
    color: #fff;
    text-decoration: underline;
}

/* 适配移动端的友情链接 */
@media (max-width: 768px) {
    .friend-links-container {
        gap: 10px;
    }
    
    .friend-link {
        font-size: 12px;
    }
}