/* 现代化导航系统样式 */

/* 全局页面布局 */
body {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

.page-container {
    background: transparent;
    min-height: 100vh;
}

/* 现代化头部导航栏 */
.modern-navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar-container {
    max-width: 100%;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.navbar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    gap: 2rem;
}

/* Logo区域 */
.navbar-brand-section {
    flex-shrink: 0;
}

.modern-navbar-brand {
    text-decoration: none;
    transition: transform 0.3s ease;
}

.modern-navbar-brand:hover {
    transform: scale(1.02);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.brand-logo {
    height: 45px;
    width: 45px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.brand-logo:hover {
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    transform: translateY(-1px);
}

.brand-text {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.brand-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2c3e50;
    line-height: 1;
    letter-spacing: 0.3px;
}

.brand-subtitle {
    font-size: 0.75rem;
    color: #667eea;
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

/* 搜索区域 */
.navbar-search-section {
    flex: 1;
    max-width: 500px;
    margin: 0 2rem;
}

.modern-search-form {
    width: 100%;
}

.search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.9);
    border: 2px solid rgba(102, 126, 234, 0.1);
    border-radius: 25px;
    padding: 0.5rem 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.search-input-wrapper:focus-within {
    border-color: #667eea;
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.15);
    transform: translateY(-1px);
}

.search-icon {
    color: #6c757d;
    font-size: 1.1rem;
    margin-right: 0.8rem;
    transition: color 0.3s ease;
}

.search-input-wrapper:focus-within .search-icon {
    color: #667eea;
}

.search-input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font-size: 1rem;
    color: #2c3e50;
    padding: 0.3rem 0;
}

.search-input::placeholder {
    color: #9ca3af;
    font-weight: 400;
}

.search-btn {
    background: linear-gradient(135deg, #667eea, #764ba2);
    border: none;
    border-radius: 50%;
    width: 35px;
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: all 0.3s ease;
    margin-left: 0.5rem;
}

.search-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

/* 用户操作区域 */
.navbar-user-section {
    flex-shrink: 0;
}

.user-nav {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* 用户下拉菜单 */
.user-dropdown {
    position: relative;
}

.user-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.9);
    border: 2px solid rgba(102, 126, 234, 0.1);
    border-radius: 20px;
    padding: 0.5rem 1rem;
    color: #2c3e50;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
}

.user-btn:hover {
    border-color: #667eea;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.15);
    transform: translateY(-1px);
}

.user-avatar i {
    font-size: 1.3rem;
    color: #667eea;
}

.user-name {
    font-size: 0.9rem;
    max-width: 100px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.dropdown-arrow {
    font-size: 0.8rem;
    transition: transform 0.3s ease;
}

.user-dropdown.show .dropdown-arrow {
    transform: rotate(180deg);
}

/* 现代化下拉菜单 */
.modern-dropdown {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
    padding: 0.5rem 0;
    margin-top: 0.5rem;
    min-width: 180px;
}

.modern-dropdown .dropdown-item {
    padding: 0.7rem 1.2rem;
    color: #2c3e50;
    font-weight: 500;
    transition: all 0.3s ease;
    border-radius: 8px;
    margin: 0 0.5rem;
}

.modern-dropdown .dropdown-item:hover {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    transform: translateX(3px);
}

.modern-dropdown .dropdown-item i {
    width: 16px;
    text-align: center;
}

/* 认证按钮 */
.auth-buttons {
    display: flex;
    gap: 0.5rem;
}

.auth-btn {
    padding: 0.5rem 1.2rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.login-btn {
    background: rgba(255, 255, 255, 0.9);
    color: #667eea;
    border: 2px solid rgba(102, 126, 234, 0.2);
}

.login-btn:hover {
    background: #667eea;
    color: white;
    border-color: #667eea;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.register-btn {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: 2px solid transparent;
}

.register-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
    color: white;
}

/* 帮助按钮 */
.docs-btn {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.9);
    color: #6c757d;
    border: 2px solid rgba(108, 117, 125, 0.1);
    border-radius: 20px;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.docs-btn:hover {
    color: #495057;
    border-color: #6c757d;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(108, 117, 125, 0.15);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.9);
    border: 2px solid rgba(102, 126, 234, 0.1);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.mobile-menu-btn:hover {
    border-color: #667eea;
    transform: scale(1.05);
}

.hamburger-line {
    width: 20px;
    height: 2px;
    background: #667eea;
    margin: 2px 0;
    transition: all 0.3s ease;
    border-radius: 1px;
}

/* 移动端侧边栏搜索和用户区域样式 */
.mobile-sidebar-search {
    display: none;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid rgba(102, 126, 234, 0.1);
    margin-bottom: 1rem;
}

.mobile-search-wrapper {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.9);
    border: 2px solid rgba(102, 126, 234, 0.1);
    border-radius: 20px;
    padding: 0.5rem 1rem;
    transition: all 0.3s ease;
}

.mobile-search-wrapper:focus-within {
    border-color: #667eea;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.15);
}

.mobile-search-wrapper .search-icon {
    color: #6c757d;
    font-size: 1rem;
    margin-right: 0.8rem;
}

.mobile-search-wrapper input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font-size: 1rem;
    color: #2c3e50;
    padding: 0.3rem 0;
}

.mobile-search-wrapper input::placeholder {
    color: #9ca3af;
}

.search-submit-btn {
    background: linear-gradient(135deg, #667eea, #764ba2);
    border: none;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin-left: 0.5rem;
    transition: all 0.3s ease;
}

.search-submit-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.mobile-sidebar-user {
    display: none;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid rgba(102, 126, 234, 0.1);
    margin-bottom: 1rem;
}

.mobile-user-info {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 1rem;
    padding: 0.8rem;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.05));
    border-radius: 12px;
    border: 1px solid rgba(102, 126, 234, 0.2);
}

.mobile-user-avatar i {
    font-size: 2rem;
    color: #667eea;
}

.mobile-user-name {
    font-weight: 600;
    color: #2c3e50;
    font-size: 1rem;
}

.mobile-user-actions {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.mobile-action-btn {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.8rem 1rem;
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(102, 126, 234, 0.1);
    border-radius: 10px;
    color: #495057;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.mobile-action-btn:hover {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border-color: transparent;
    transform: translateX(3px);
}

.mobile-action-btn.logout-btn:hover {
    background: linear-gradient(135deg, #dc3545, #c82333);
}

.mobile-action-btn i {
    width: 20px;
    text-align: center;
    font-size: 1.1rem;
}

.mobile-auth-section {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.mobile-auth-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    border-radius: 20px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.mobile-auth-btn.login-btn {
    background: rgba(255, 255, 255, 0.9);
    color: #667eea;
    border: 2px solid rgba(102, 126, 234, 0.2);
}

.mobile-auth-btn.login-btn:hover {
    background: #667eea;
    color: white;
    border-color: #667eea;
}

.mobile-auth-btn.register-btn {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: 2px solid transparent;
}

.mobile-auth-btn.register-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
    color: white;
}

/* 主布局容器 */
.main-wrapper {
    display: flex;
    min-height: calc(100vh - 70px);
    background: transparent;
}

/* 现代化侧边栏 */
.modern-sidebar {
    width: 280px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-right: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.08);
    position: sticky;
    top: 70px;
    height: calc(100vh - 70px);
    overflow-y: auto;
    transition: all 0.3s ease;
}

.sidebar-content {
    padding: 1.5rem 0;
    height: 100%;
}

/* 导航区域 */
.sidebar-nav {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.nav-section {
    margin-bottom: 2rem;
}

.nav-section:last-child {
    margin-top: auto;
    margin-bottom: 1rem;
}

/* 区域标题 */
.section-header {
    padding: 0 1.5rem 1rem;
}

.section-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: #6c757d;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 0;
    display: flex;
    align-items: center;
}

.section-title i {
    color: #667eea;
    font-size: 1rem;
}

/* 导航列表 */
.nav-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-item {
    margin-bottom: 0.3rem;
}

/* 导航链接 */
.nav-link {
    display: flex;
    align-items: center;
    padding: 0.8rem 1.5rem;
    color: #495057;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    border-radius: 0 25px 25px 0;
    margin-right: 1rem;
}

.nav-link:hover {
    color: #667eea;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.05));
    transform: translateX(5px);
}

.nav-link.active {
    color: #667eea;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.15), rgba(118, 75, 162, 0.1));
    font-weight: 600;
    transform: translateX(8px);
}

.nav-link.active .nav-indicator {
    opacity: 1;
    transform: scaleY(1);
}

/* 导航图标 */
.nav-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: rgba(102, 126, 234, 0.1);
    margin-right: 1rem;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.nav-icon i {
    font-size: 1.1rem;
    color: #667eea;
    transition: all 0.3s ease;
}

.nav-link:hover .nav-icon {
    background: linear-gradient(135deg, #667eea, #764ba2);
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.nav-link:hover .nav-icon i {
    color: white;
    transform: scale(1.1);
}

.nav-link.active .nav-icon {
    background: linear-gradient(135deg, #667eea, #764ba2);
    box-shadow: 0 6px 16px rgba(102, 126, 234, 0.4);
}

.nav-link.active .nav-icon i {
    color: white;
}

/* 导航文字 */
.nav-text {
    flex: 1;
    font-size: 0.95rem;
    letter-spacing: 0.3px;
}

/* 激活指示器 */
.nav-indicator {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%) scaleY(0);
    width: 4px;
    height: 60%;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 0 2px 2px 0;
    opacity: 0;
    transition: all 0.3s ease;
}

/* 分类链接特殊样式 */
.category-link .nav-icon {
    background: rgba(108, 117, 125, 0.1);
}

.category-link .nav-icon i {
    color: #6c757d;
}

.category-link:hover .nav-icon {
    background: linear-gradient(135deg, #667eea, #764ba2);
}

.category-link:hover .nav-icon i {
    color: white;
}

/* 全平台支持现代化样式 */
.platform-support-modern {
    margin: 0 1.5rem;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(118, 75, 162, 0.03));
    border: 1px solid rgba(102, 126, 234, 0.1);
    border-radius: 16px;
    padding: 1.2rem;
    transition: all 0.3s ease;
}

.platform-support-modern:hover {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.08), rgba(118, 75, 162, 0.05));
    border-color: rgba(102, 126, 234, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.15);
}

.platform-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: #495057;
    font-weight: 600;
    font-size: 0.9rem;
}

.platform-header i {
    color: #667eea;
    font-size: 1.1rem;
}

.platform-grid {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.platform-row {
    display: flex;
    justify-content: space-around;
    gap: 0.5rem;
}

.platform-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
    padding: 0.5rem 0.3rem;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(102, 126, 234, 0.1);
    transition: all 0.3s ease;
    flex: 1;
    min-width: 0;
    cursor: default;
}

.platform-item:hover {
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.platform-item i {
    font-size: 1rem;
    color: #6c757d;
    transition: all 0.3s ease;
}

.platform-item:hover i {
    color: white;
    transform: scale(1.1);
}

.platform-item span {
    font-size: 0.65rem;
    font-weight: 500;
    color: #6c757d;
    text-align: center;
    line-height: 1;
    transition: color 0.3s ease;
}

.platform-item:hover span {
    color: white;
}

/* 主内容区域 */
.main-content {
    flex: 1;
    background: transparent;
    padding: 2rem;
    overflow-x: hidden;
}

.main-content .container-fluid {
    max-width: 100%;
    padding: 0;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .navbar-content {
        gap: 1rem;
    }

    .navbar-search-section {
        max-width: 400px;
        margin: 0 1rem;
    }

    .modern-sidebar {
        width: 260px;
    }

    .main-content {
        padding: 1.5rem;
    }
}

@media (max-width: 992px) {
    .navbar-search-section {
        max-width: 300px;
        margin: 0 0.5rem;
    }

    .brand-text {
        display: none;
    }

    .user-name {
        display: none;
    }

    .docs-btn span {
        display: none;
    }

    .modern-sidebar {
        width: 240px;
    }

    .nav-link {
        padding: 0.7rem 1rem;
        margin-right: 0.5rem;
    }

    .nav-icon {
        width: 35px;
        height: 35px;
        margin-right: 0.8rem;
    }

    .platform-support-modern {
        margin: 0 1rem;
        padding: 1rem;
    }
}

@media (max-width: 768px) {
    .navbar-content {
        height: 60px;
        padding: 0 1rem;
    }

    .navbar-search-section {
        display: none;
    }

    .user-nav {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .main-wrapper {
        position: relative;
        min-height: calc(100vh - 60px);
    }

    .modern-sidebar {
        position: fixed;
        top: 60px;
        left: -280px;
        width: 280px;
        height: calc(100vh - 60px);
        z-index: 999;
        transition: left 0.3s ease;
        border-right: 1px solid rgba(255, 255, 255, 0.2);
        box-shadow: 4px 0 20px rgba(0, 0, 0, 0.15);
    }

    .modern-sidebar.show {
        left: 0;
    }

    .sidebar-overlay {
        position: fixed;
        top: 60px;
        left: 0;
        width: 100%;
        height: calc(100vh - 60px);
        background: rgba(0, 0, 0, 0.5);
        z-index: 998;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

    .sidebar-overlay.show {
        opacity: 1;
        visibility: visible;
    }

    .sidebar-content {
        padding: 0;
    }

    .mobile-sidebar-search {
        display: block;
    }

    .mobile-sidebar-user {
        display: block;
    }

    .nav-section {
        margin-bottom: 1rem;
    }

    .nav-link {
        padding: 0.6rem 1rem;
        margin-right: 0;
        border-radius: 0;
    }

    .nav-link:hover,
    .nav-link.active {
        transform: none;
    }

    .nav-indicator {
        display: none;
    }

    .platform-support-modern {
        margin: 0 1rem;
        padding: 0.8rem;
    }

    .platform-grid {
        gap: 0.6rem;
    }

    .platform-row {
        gap: 0.3rem;
    }

    .platform-item {
        padding: 0.4rem 0.2rem;
    }

    .platform-item i {
        font-size: 0.9rem;
    }

    .platform-item span {
        font-size: 0.6rem;
    }

    .main-content {
        padding: 1rem;
        width: 100%;
    }

    /* 移动端菜单按钮样式调整 */
    .mobile-menu-btn {
        position: relative;
        z-index: 1001;
    }

    .mobile-menu-btn.active .hamburger-line:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .mobile-menu-btn.active .hamburger-line:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-btn.active .hamburger-line:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
}

@media (max-width: 480px) {
    .navbar-container {
        padding: 0 1rem;
    }

    .navbar-content {
        height: 55px;
    }

    .brand-logo {
        height: 35px;
        width: 35px;
    }

    .brand-name {
        font-size: 1.2rem;
    }

    .main-wrapper {
        min-height: calc(100vh - 55px);
    }

    .modern-sidebar {
        top: 55px;
        height: calc(100vh - 55px);
    }

    .sidebar-content {
        padding: 0.8rem 0;
    }

    .section-title {
        font-size: 0.8rem;
    }

    .nav-link {
        padding: 0.5rem 0.8rem;
        font-size: 0.9rem;
    }

    .nav-icon {
        width: 30px;
        height: 30px;
        margin-right: 0.6rem;
    }

    .nav-icon i {
        font-size: 1rem;
    }

    .platform-support-modern {
        margin: 0 0.8rem;
        padding: 0.6rem;
    }

    .platform-header {
        font-size: 0.8rem;
        margin-bottom: 0.8rem;
    }

    .platform-grid {
        gap: 0.5rem;
    }

    .platform-item {
        padding: 0.3rem 0.1rem;
    }

    .platform-item i {
        font-size: 0.8rem;
    }

    .platform-item span {
        font-size: 0.55rem;
    }

    .main-content {
        padding: 0.8rem;
    }
}

/* 滚动条样式 */
.modern-sidebar::-webkit-scrollbar {
    width: 6px;
}

.modern-sidebar::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
}

.modern-sidebar::-webkit-scrollbar-thumb {
    background: rgba(102, 126, 234, 0.3);
    border-radius: 3px;
}

.modern-sidebar::-webkit-scrollbar-thumb:hover {
    background: rgba(102, 126, 234, 0.5);
}

/* 动画效果 */
@keyframes slideInLeft {
    from {
        transform: translateX(-100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

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

.modern-sidebar {
    animation: slideInLeft 0.3s ease-out;
}

.nav-item {
    animation: fadeInUp 0.3s ease-out;
    animation-fill-mode: both;
}

.nav-item:nth-child(1) { animation-delay: 0.1s; }
.nav-item:nth-child(2) { animation-delay: 0.15s; }
.nav-item:nth-child(3) { animation-delay: 0.2s; }
.nav-item:nth-child(4) { animation-delay: 0.25s; }
.nav-item:nth-child(5) { animation-delay: 0.3s; }
.nav-item:nth-child(6) { animation-delay: 0.35s; }
.nav-item:nth-child(7) { animation-delay: 0.4s; }
.nav-item:nth-child(8) { animation-delay: 0.45s; }

/* Footer已移除 */