/* 全局样式 */
:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --bg-gradient: linear-gradient(135deg, #6c757d 0%, #495057 100%);
}

body {
    background-color: #f8f9fa;
    color: #333;
}

/* 导航栏样式 */
.navbar {
    background: rgba(33, 37, 41, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    padding: 0.75rem 0;
    background: rgba(33, 37, 41, 0.98);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.4rem;
    color: white !important;
    position: relative;
}

.navbar-brand::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.navbar-brand:hover::after {
    width: 100%;
}

.navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.85) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: 50px;
    transition: all 0.3s ease;
}

.navbar-nav .nav-link:hover {
    color: white !important;
    background: rgba(255, 255, 255, 0.1);
}

.navbar-nav .nav-link.active {
    color: white !important;
    background: var(--primary-color);
}

.navbar-nav .nav-link i {
    margin-right: 0.4rem;
    font-size: 1.1rem;
    vertical-align: -2px;
}

/* 导航栏下拉菜单 */
.navbar .dropdown-menu {
    background: rgba(33, 37, 41, 0.95);
    backdrop-filter: blur(10px);
    border: none;
    border-radius: 10px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
    padding: 0.5rem;
    margin-top: 0.5rem;
}

.navbar .dropdown-item {
    color: rgba(255, 255, 255, 0.85);
    padding: 0.6rem 1rem;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.navbar .dropdown-item:hover,
.navbar .dropdown-item:focus {
    color: white;
    background: rgba(255, 255, 255, 0.1);
}

.navbar .dropdown-item.active {
    color: white;
    background: var(--primary-color);
}

/* 导航栏搜索框 */
.navbar .search-form {
    position: relative;
}

.navbar .search-form .form-control {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: white;
    padding-left: 1rem;
    padding-right: 3rem;
    border-radius: 50px;
    width: 200px;
    transition: all 0.3s ease;
}

.navbar .search-form .form-control:focus {
    background: rgba(255, 255, 255, 0.15);
    width: 300px;
    box-shadow: none;
}

.navbar .search-form .form-control::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.navbar .search-form .btn {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.8);
    padding: 0 1rem;
    transition: all 0.3s ease;
}

.navbar .search-form .btn:hover {
    color: white;
    transform: scale(1.1);
}

/* 响应式调整 */
@media (max-width: 991.98px) {
    .navbar-collapse {
        background: rgba(33, 37, 41, 0.98);
        padding: 1rem;
        border-radius: 10px;
        margin-top: 0.5rem;
    }
    
    .navbar .search-form {
        margin-top: 1rem;
    }
    
    .navbar .search-form .form-control,
    .navbar .search-form .form-control:focus {
        width: 100%;
    }
    
    .navbar-nav .nav-link {
        padding: 0.75rem 1rem !important;
    }
}

/* 卡片样式 */
.card {
    border: none;
    box-shadow: 0 2px 4px rgba(0,0,0,.05);
    transition: transform 0.2s;
}

.card:hover {
    transform: translateY(-2px);
}

.card-header {
    background: white;
    border-bottom: 2px solid #f8f9fa;
}

.card-title {
    color: var(--secondary-color);
    margin-bottom: 0;
}

/* 应用列表样式 */
.app-card {
    background: rgba(255, 255, 255, 0.98);
    border: none;
    border-radius: 15px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    overflow: hidden;
}

.app-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.1);
}

.card-img-wrapper {
    position: relative;
    padding-top: 75%;
    overflow: hidden;
    background: #f8f9fa;
}

.card-img-wrapper img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.app-card:hover .card-img-wrapper img {
    transform: scale(1.05);
}

.card-img-overlay {
    background: linear-gradient(to top, 
        rgba(0, 0, 0, 0.8) 0%,
        rgba(0, 0, 0, 0) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.app-card:hover .card-img-overlay {
    opacity: 1;
}

.app-card .badge {
    font-weight: 500;
    padding: 0.5em 0.8em;
}

.app-card .card-title {
    font-size: 1.1rem;
    line-height: 1.4;
    margin-bottom: 0.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.app-card .card-text {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.app-card .btn-group {
    opacity: 0.9;
    transition: opacity 0.3s ease;
}

.app-card:hover .btn-group {
    opacity: 1;
}

.app-card .btn {
    padding: 0.5rem 1rem;
    font-weight: 500;
}

/* 应用详情页样式优化 */
.app-header {
    background: linear-gradient(135deg, #4e73df 0%, #224abe 100%);
    color: white;
    padding: 4rem 0;
    margin-bottom: 3rem;
    position: relative;
    overflow: hidden;
}

/* 添加背景动效 */
.app-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    animation: backgroundMove 30s linear infinite;
}

@keyframes backgroundMove {
    0% { background-position: 0 0; }
    100% { background-position: 100px 100px; }
}

.app-icon {
    width: 128px;
    height: 128px;
    object-fit: cover;
    border-radius: 24px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
    transition: transform 0.3s ease;
    background: white;
    padding: 4px;
}

.app-icon:hover {
    transform: translateY(-5px);
}

/* 应用信息展示样式优化 */
.app-info-section {
    position: relative;
    z-index: 1;
    margin-top: -60px;
}

.app-info-card {
    background: rgba(255, 255, 255, 0.98);
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    padding: 2.5rem;
    height: 100%;
    transition: transform 0.3s ease;
}

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

/* 应用基本信息 */
.app-meta {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.app-meta-info h1 {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: #2d3436;
}

.app-meta-info .version {
    display: inline-flex;
    align-items: center;
    background: rgba(var(--primary-rgb), 0.1);
    color: var(--primary-color);
    padding: 0.35rem 1rem;
    border-radius: 100px;
    font-weight: 500;
    font-size: 0.9rem;
}

/* 应用统计信息 */
.app-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: rgba(var(--primary-rgb), 0.03);
    border-radius: 15px;
    transition: all 0.3s ease;
}

.stat-item:hover {
    background: rgba(var(--primary-rgb), 0.06);
    transform: translateY(-3px);
}

.stat-item i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2d3436;
    margin-bottom: 0.25rem;
}

.stat-label {
    color: #636e72;
    font-size: 0.9rem;
}

/* 应用描述 */
.app-description {
    position: relative;
    padding: 2rem;
    background: #f8f9fa;
    border-radius: 15px;
    margin: 2rem 0;
}

.app-description::before {
    content: '"';
    position: absolute;
    top: -20px;
    left: 20px;
    font-size: 5rem;
    color: var(--primary-color);
    opacity: 0.1;
    font-family: serif;
}

/* 系统要求 */
.requirements-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.requirements-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 0;
    padding: 0;
}

.requirements-list li {
    display: flex;
    align-items: center;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 10px;
    font-size: 0.95rem;
}

.requirements-list li i {
    margin-right: 0.75rem;
    color: var(--primary-color);
    font-size: 1.2rem;
}

/* 下载区域 */
.download-section {
    text-align: center;
    padding: 3rem;
    background: linear-gradient(135deg, rgba(var(--primary-rgb), 0.05) 0%, rgba(var(--primary-rgb), 0.1) 100%);
    border-radius: 20px;
    margin: 2rem 0;
}

.download-info {
    max-width: 600px;
    margin: 0 auto 2rem;
}

.download-btn-lg {
    padding: 1.25rem 3rem;
    font-size: 1.25rem;
    border-radius: 100px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    box-shadow: 0 5px 20px rgba(var(--primary-rgb), 0.3);
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 1rem;
}

.download-btn-lg:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(var(--primary-rgb), 0.4);
    color: white;
    background: linear-gradient(90deg, var(--secondary-color), var(--primary-color));
}

.download-btn-lg i {
    font-size: 1.5rem;
}

/* 相关应用卡片 */
.related-app {
    display: flex;
    align-items: center;
    padding: 1rem;
    background: white;
    border-radius: 12px;
    margin-bottom: 1rem;
    transition: all 0.3s ease;
}

.related-app:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.related-app img {
    width: 64px;
    height: 64px;
    border-radius: 12px;
    margin-right: 1rem;
    object-fit: cover;
}

.related-app-info {
    flex: 1;
}

.related-app-info h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.related-app-info .downloads {
    font-size: 0.875rem;
    color: #636e72;
}

/* 评论区样式 */
.comment {
    background: white;
    border-radius: 15px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 2px 12px rgba(0,0,0,0.04);
    transition: transform 0.3s ease;
}

.comment:hover {
    transform: translateY(-2px);
}

.comment-header {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.comment-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    margin-right: 1rem;
    background: #f8f9fa;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary-color);
}

.comment-meta {
    flex: 1;
}

.comment-author {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.comment-date {
    font-size: 0.875rem;
    color: #6c757d;
}

.comment-content {
    color: #444;
    line-height: 1.6;
}

/* 评论表单样式 */
.comment-form {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}

.comment-form .form-control {
    border-radius: 8px;
    padding: 0.75rem 1rem;
    border: 1px solid rgba(0,0,0,0.1);
}

.comment-form .form-control:focus {
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.1);
}

/* 评分和评论样式 */
.rating {
    display: inline-flex;
    flex-direction: row-reverse;
    gap: 3px;
}

.rating input {
    display: none;
}

.rating label {
    color: #ddd;
    font-size: 1.5rem;
    cursor: pointer;
}

.rating input:checked ~ label,
.rating:not(:checked) label:hover,
.rating:not(:checked) label:hover ~ label {
    color: #ffc107;
}

.rating-display {
    color: #ffc107;
    letter-spacing: 2px;
}

.rating-display .star {
    opacity: 0.3;
    transition: all 0.3s ease;
}

.rating-display .star.filled {
    opacity: 1;
}

.rating-display .star {
    font-size: 0.9rem;
}

.rating-display small {
    font-size: 0.8rem;
    vertical-align: 1px;
}

/* 按钮样式 */
.btn {
    padding: 0.5rem 1.5rem;
    font-weight: 500;
}

.btn-primary {
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border: none;
    box-shadow: 0 4px 15px rgba(0, 132, 255, 0.2);
}

.btn-primary:hover {
    background: linear-gradient(90deg, var(--secondary-color), var(--primary-color));
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 132, 255, 0.3);
}

/* 分页样式 */
.pagination {
    gap: 0.5rem;
}

.pagination .page-link {
    border: none;
    border-radius: 8px;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.pagination .page-link:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
    color: var(--primary-color);
}

.pagination .page-item.active .page-link {
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    color: white;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(0, 132, 255, 0.2);
}

/* 标签和徽章样式 */
.badge {
    padding: 0.5em 1em;
    font-weight: 500;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .app-header {
        padding: 20px 0;
    }
    
    .app-icon {
        width: 96px;
        height: 96px;
        margin-bottom: 1rem;
    }
    
    .download-btn {
        width: 100%;
        margin-top: 1rem;
    }
}

/* 首页头部样式优化 */
.hero-section {
    background: linear-gradient(135deg, #4e73df 0%, #224abe 100%);
    position: relative;
    overflow: hidden;
    padding: 6rem 0;
}

/* 添加动态波浪效果 */
.hero-section::before,
.hero-section::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 120px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='%23ffffff' fill-opacity='0.1' d='M0,128L48,144C96,160,192,192,288,186.7C384,181,480,139,576,138.7C672,139,768,181,864,181.3C960,181,1056,139,1152,122.7C1248,107,1344,117,1392,122.7L1440,128L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z'%3E%3C/path%3E%3C/svg%3E");
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    animation: wave 10s linear infinite;
}

.hero-section::after {
    height: 100px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='%23ffffff' fill-opacity='0.1' d='M0,64L48,80C96,96,192,128,288,128C384,128,480,96,576,90.7C672,85,768,107,864,128C960,149,1056,171,1152,165.3C1248,160,1344,128,1392,112L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z'%3E%3C/path%3E%3C/svg%3E");
    animation: wave 15s linear infinite reverse;
}

@keyframes wave {
    0% { background-position-x: 0; }
    100% { background-position-x: 1440px; }
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
    animation: fadeInDown 1s ease;
}

.hero-description {
    font-size: 1.35rem;
    opacity: 0.95;
    max-width: 700px;
    margin: 0 auto 2.5rem;
    text-shadow: 0 1px 2px rgba(0,0,0,0.1);
    animation: fadeInUp 1s ease 0.3s both;
}

/* 搜索框样式优化 */
.search-wrapper {
    max-width: 700px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px);
    border-radius: 100px;
    padding: 0.75rem;
    box-shadow: 
        0 4px 24px -1px rgba(0, 0, 0, 0.2),
        inset 0 0 0 1px rgba(255, 255, 255, 0.15);
    animation: fadeIn 1s ease 0.6s both;
}

.search-wrapper .input-group {
    background: transparent;
    border-radius: 100px;
    overflow: hidden;
}

.search-wrapper .form-control {
    border: none;
    background: transparent;
    color: white;
    height: 50px;
    padding: 0 2rem;
    font-size: 1.2rem;
}

.search-wrapper .form-control::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.search-wrapper .form-control:focus {
    box-shadow: none;
}

.search-wrapper .btn {
    border: none;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border-radius: 50px;
    padding: 0.75rem 2.5rem;
    margin: 0 0.25rem;
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
}

.search-wrapper .btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.search-wrapper .btn i {
    font-size: 1.2rem;
    margin-right: 0.5rem;
    vertical-align: -2px;
}

/* 热门搜索标签 */
.search-tags {
    margin-top: 2rem;
    animation: fadeIn 1s ease 0.9s both;
}

.search-tags .badge {
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    margin: 0.25rem;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.search-tags .badge:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

/* 搜索建议下拉框 */
.search-suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    margin-top: 0.5rem;
    padding: 0.5rem;
    box-shadow: 0 4px 24px -1px rgba(0, 0, 0, 0.1);
    display: none;
}

.search-suggestions.show {
    display: block;
    animation: fadeInDown 0.3s ease;
}

.search-suggestion-item {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.search-suggestion-item:hover {
    background: rgba(0, 0, 0, 0.05);
}

.search-suggestion-item i {
    margin-right: 0.75rem;
    color: var(--primary-color);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .hero-section {
        padding: 3rem 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .search-wrapper {
        margin: 0 1rem;
    }
}

/* 页脚样式优化 */
.footer {
    position: relative;
    background: linear-gradient(to bottom, #1a1c23 0%, #121418 100%);
    color: #fff;
    padding: 5rem 0 2rem;
    margin-top: 6rem;
}

/* 添加渐变分隔线 */
.footer::before {
    content: '';
    position: absolute;
    top: -3px;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(to right,
        var(--primary-color),
        var(--success-color),
        var(--primary-color)
    );
}

/* 标题样式 */
.footer-title {
    color: #fff;
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 1.75rem;
    position: relative;
    padding-bottom: 1rem;
}

.footer-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 50px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
}

/* 链接列表样式 */
.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    position: relative;
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 0;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-links a::before {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 1px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.footer-links a:hover {
    color: white;
    transform: translateX(10px);
}

.footer-links a:hover::before {
    width: 100%;
}

/* 联系信息样式 */
.footer-contact {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 2rem;
}

.footer-contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.footer-contact-item:last-child {
    margin-bottom: 0;
}

.footer-contact-item i {
    width: 35px;
    height: 35px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
    color: var(--primary-color);
}

/* 页脚底部样式 */
.footer-bottom {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom-links {
    margin-bottom: 1rem;
}

.footer-bottom-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    margin: 0 1rem;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

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

.footer-copyright {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

/* 社交媒体图标 */
.footer-social {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.footer-social a:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-5px) rotate(360deg);
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* 分类导航样式 */
.category-card {
    background: rgba(255, 255, 255, 0.98);
    border: none;
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.1);
}

.category-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    transition: transform 0.3s ease;
}

.category-card:hover i {
    transform: scale(1.1);
}

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

.app-card {
    animation: slideInUp 0.6s ease backwards;
}

.app-card:nth-child(2) { animation-delay: 0.1s; }
.app-card:nth-child(3) { animation-delay: 0.2s; }
.app-card:nth-child(4) { animation-delay: 0.3s; }

/* 页脚响应式优化 */
@media (max-width: 991.98px) {
    .footer {
        padding: 4rem 0 2rem;
    }
    
    .footer-contact {
        margin-top: 2rem;
    }
    
    .footer-bottom-links a {
        display: inline-block;
        margin: 0.5rem;
    }
}

@media (max-width: 767.98px) {
    .footer {
        padding: 3rem 0 1.5rem;
        text-align: center;
    }
    
    .footer-title::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .footer-links a {
        justify-content: center;
    }
    
    .footer-social {
        justify-content: center;
    }
    
    .footer-contact {
        text-align: left;
    }
    
    .footer-contact-item {
        padding: 1rem;
        border-radius: 10px;
        background: rgba(255, 255, 255, 0.02);
        margin-bottom: 0.5rem;
    }
}

/* 页脚动画效果 */
.footer [class*="col-"] {
    opacity: 0;
    transform: translateY(20px);
    animation: footerFadeIn 0.6s ease forwards;
}

.footer [class*="col-"]:nth-child(2) { animation-delay: 0.2s; }
.footer [class*="col-"]:nth-child(3) { animation-delay: 0.4s; }
.footer [class*="col-"]:nth-child(4) { animation-delay: 0.6s; }

@keyframes footerFadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 页脚链接图标动画 */
.footer-links a i {
    transition: transform 0.3s ease;
}

.footer-links a:hover i {
    transform: translateX(5px);
}

/* 页脚波浪效果 */
.footer-wave {
    position: absolute;
    top: -70px;
    left: 0;
    width: 100%;
    height: 70px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='%231a1c23' d='M0,96L48,112C96,128,192,160,288,186.7C384,213,480,235,576,213.3C672,192,768,128,864,128C960,128,1056,192,1152,213.3C1248,235,1344,213,1392,202.7L1440,192L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z'%3E%3C/path%3E%3C/svg%3E");
    background-size: cover;
    background-position: center;
}

/* 页脚联系方式悬停效果 */
.footer-contact-item {
    transition: all 0.3s ease;
}

.footer-contact-item:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: translateX(5px);
}