/*
Theme Name: 暗影花园导航主题
Theme URI: https://shadowgarden.com
Author: NaviTech Team
Author URI: https://shadowgarden.com
Description: 暗影花园导航主题 - 一个功能丰富的WordPress导航网站主题，采用深色顶栏+浅色主体设计，支持暗色模式切换、AJAX筛选、网站收藏、提交、SEO优化、评论系统、帮助中心、网站公告、友情链接、详情跳转页等功能。
Version: 7.0.5
Requires at least: 5.0
Tested up to: 6.4
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: navitech-minimal
*/

/* ========================================
   CSS Variables - Theme Configuration
======================================== */
:root {
    /* Colors - Light Theme (Default) */
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f8fafc;
    --color-bg-tertiary: #f1f5f9;
    --color-text: #0f172a;
    --color-text-secondary: #475569;
    --color-text-tertiary: #94a3b8;
    --color-border: rgba(0, 0, 0, 0.06);
    --color-border-light: rgba(0, 0, 0, 0.03);
    
    /* Header - Dark Style */
    --header-bg: #0a0a0a;
    --header-text: #ffffff;
    --header-text-secondary: #a1a1aa;
    --header-border: rgba(255, 255, 255, 0.08);
    
    /* Accent Colors - 青蓝渐变 */
    --color-primary: #3B82F6;
    --color-accent: #10B981;
    --color-gradient: linear-gradient(135deg, #3B82F6, #10B981);
    --color-warning: #F59E0B;
    --color-danger: #EF4444;
    --color-info: #06B6D4;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    
    /* Border Radius */
    --radius-xs: 4px;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;
    --radius-2xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 200ms ease;
    --transition-slow: 300ms ease;
    
    /* Z-index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;
}

/* Dark Theme */
[data-theme="dark"] {
    --color-bg-primary: #0a0a0a;
    --color-bg-secondary: #141414;
    --color-bg-tertiary: #1f1f1f;
    --color-text: #ffffff;
    --color-text-secondary: #a1a1aa;
    --color-text-tertiary: #71717a;
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-light: rgba(255, 255, 255, 0.04);
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
}

/* ========================================
   Base Styles
======================================== */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-tap-highlight-color: transparent;
}

body {
    margin: 0;
    font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    background-color: var(--color-bg-primary);
    color: var(--color-text);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* 性能优化：减少重绘 */
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
    /* 图片加载优化 */
    content-visibility: auto;
}

/* GPU加速优化 - 为动画元素启用硬件加速 */
.site-card, 
.carousel-item,
.modal,
.dropdown-menu,
.toast,
.favorite-btn,
.like-btn,
.back-to-top,
.quick-link-card {
    will-change: transform;
    transform: translateZ(0);
    backface-visibility: hidden;
}

/* 减少动画元素的重绘 */
.site-card-inner,
.carousel-card,
.modal-content {
    contain: layout style paint;
}

/* ========================================
   Container
======================================== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
}

/* ========================================
   Typography
======================================== */
h1, h2, h3, h4, h5, h6 {
    margin: 0;
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-text);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.875rem; }

p {
    margin: 0 0 1rem;
}

/* ========================================
   Main Content Area
======================================== */
.main-content {
    padding-top: 20px;
    min-height: calc(100vh - 200px);
}

@media (max-width: 640px) {
    .main-content {
        padding-top: 15px;
    }
}

/* ========================================
   Site Cards Grid
======================================== */
.sites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.25rem;
    padding: 1.5rem 0;
    align-items: stretch;
    grid-auto-rows: 1fr;
}

.site-card {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    overflow: hidden;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
    cursor: pointer;
    position: relative;
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 140px;
}

.site-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 60%, rgba(59, 130, 246, 0.03));
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.site-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(59, 130, 246, 0.2);
}

.site-card:hover::after {
    opacity: 1;
}

.site-card-inner {
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.site-card-header {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
}

.site-icon-wrapper {
    flex-shrink: 0;
}

.site-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    object-fit: cover;
}

.site-icon-placeholder {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, #06b6d4 0%, #3b82f6 50%, #8b5cf6 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    color: #fff;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.25);
}

.site-icon-placeholder i {
    font-size: 1.25rem;
    opacity: 0.95;
}

.site-info {
    flex: 1;
    min-width: 0;
}

.site-title {
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

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

.site-description {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.site-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1rem;
    margin-top: auto;
    border-top: 1px solid var(--color-border-light);
}

.click-count {
    font-size: 0.8rem;
    color: var(--color-text-tertiary);
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.click-count i {
    font-size: 0.75rem;
}

.site-actions {
    display: flex;
    gap: 0.5rem;
}

.action-btn {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    background: var(--color-bg-tertiary);
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.action-btn:hover {
    background: var(--color-bg-primary);
    color: var(--color-text);
}

.favorite-btn.active {
    color: var(--color-danger);
}

.favorite-btn:hover {
    color: var(--color-danger);
}

/* ========================================
   Pagination - 淡蓝简约风格
======================================== */
.pagination-wrapper {
    width: 100%;
    padding: 36px 0 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    clear: both;
}

.pagination-container {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    flex-wrap: nowrap;
    justify-content: center;
}

.pagination-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 14px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    background: #e8f4fc;
    color: #333;
    transition: all 0.2s ease;
    text-decoration: none;
    user-select: none;
    -webkit-user-select: none;
    white-space: nowrap;
    flex-shrink: 0;
    box-sizing: border-box;
}

.pagination-btn:hover:not(.active):not(:disabled) {
    background: #d0e8f7;
    color: #111;
}

.pagination-btn:active:not(:disabled) {
    transform: scale(0.96);
}

.pagination-btn.active {
    background: #3b82f6;
    color: #fff;
    font-weight: 600;
}

.pagination-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.pagination-btn.prev,
.pagination-btn.next {
    gap: 5px;
}

.pagination-btn.prev i,
.pagination-btn.next i {
    font-size: 10px;
}

.pagination-dots {
    padding: 0 6px;
    color: #666;
    user-select: none;
    font-size: 13px;
    background: transparent;
}

.pagination-stats {
    font-size: 12px;
    color: #555;
    text-align: center;
    letter-spacing: 0.3px;
}

.pagination-stats strong {
    color: #333;
    font-weight: 600;
}

/* 暗色模式 */
[data-theme="dark"] .pagination-btn {
    background: #1e3a5f;
    color: #c5d9ed;
}

[data-theme="dark"] .pagination-btn:hover:not(.active):not(:disabled) {
    background: #2a4a6f;
    color: #e0effa;
}

[data-theme="dark"] .pagination-btn.active {
    background: #3b82f6;
    color: #fff;
}

[data-theme="dark"] .pagination-dots {
    color: #7aa3c7;
}

[data-theme="dark"] .pagination-stats {
    color: #7aa3c7;
}

[data-theme="dark"] .pagination-stats strong {
    color: #c5d9ed;
}

/* 移动端简化 */
@media (max-width: 640px) {
    .pagination-btn.prev span,
    .pagination-btn.next span {
        display: none;
    }
    
    .pagination-btn.prev,
    .pagination-btn.next {
        min-width: 36px;
        padding: 0;
    }
    
    .pagination-btn.prev i,
    .pagination-btn.next i {
        font-size: 12px;
    }
    
    .pagination-stats {
        font-size: 11px;
    }
}

/* ========================================
   Hero Section
======================================== */
.hero-section {
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-tertiary) 100%);
    padding: 3rem 0;
    border-bottom: 1px solid var(--color-border);
    text-align: center;
}

.hero-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin: 0;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 1.5rem;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

/* ========================================
   Filter Bar
======================================== */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 1rem;
}

.filter-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.filter-btn {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    opacity: 0.85;
}

.filter-btn.active {
    color: var(--color-primary);
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--color-primary);
}

.sort-select {
    margin-left: auto;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    font-size: 0.875rem;
    cursor: pointer;
}

/* ========================================
   高级筛选面板
======================================== */
.sites-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.section-title-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* 高级筛选按钮 */
.advanced-filter-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.advanced-filter-btn:hover {
    background: var(--color-bg-tertiary);
    color: var(--color-text);
}

.advanced-filter-btn.active {
    color: var(--color-primary);
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--color-primary);
}

/* 高级筛选面板 */
.advanced-filter-panel {
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    margin-bottom: 1rem;
    box-shadow: var(--shadow-md);
    overflow: hidden;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.filter-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
}

.filter-panel-header h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
}

.filter-panel-header h3 i {
    color: var(--color-primary);
}

.filter-panel-close {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    background: transparent;
    border: none;
    color: var(--color-text-tertiary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.filter-panel-close:hover {
    background: var(--color-bg-tertiary);
    color: var(--color-text);
}

.filter-panel-body {
    padding: 1.25rem;
}

.filter-group {
    margin-bottom: 1.25rem;
}

.filter-group:last-child {
    margin-bottom: 0;
}

.filter-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 0.75rem;
}

.filter-label i {
    color: var(--color-primary);
    font-size: 0.8rem;
}

/* 标签容器 */
.filter-tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.loading-tags {
    color: var(--color-text-tertiary);
    font-size: 0.85rem;
}

.filter-tag-btn {
    padding: 0.4rem 0.75rem;
    border-radius: var(--radius-full);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.filter-tag-btn:hover {
    opacity: 0.85;
}

.filter-tag-btn.selected {
    color: #fff;
    border-color: var(--tag-color, var(--color-primary));
    background: var(--tag-color, var(--color-primary));
}

.filter-tag-btn .tag-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--tag-color, var(--color-primary));
}

.filter-tag-btn.selected .tag-dot {
    background: #fff;
}

/* 复选框 */
.filter-checkboxes {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.filter-checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.filter-checkbox input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--color-primary);
    cursor: pointer;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

/* 范围输入 */
.filter-range-inputs {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.filter-input {
    width: 120px;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    font-size: 0.875rem;
}

.filter-input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.range-separator {
    color: var(--color-text-tertiary);
}

/* 面板底部 */
.filter-panel-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
}

.filter-btn-reset,
.filter-btn-apply {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn-reset {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
}

.filter-btn-reset:hover {
    background: var(--color-bg-tertiary);
    color: var(--color-text);
}

.filter-btn-apply {
    background: var(--color-primary);
    border: none;
    color: #fff;
}

.filter-btn-apply:hover {
    opacity: 0.9;
}

/* 筛选状态提示栏 */
.filter-status-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(139, 92, 246, 0.08));
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    margin-bottom: 1rem;
    margin-top: 0.5rem;
}

.filter-status-content {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.filter-status-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-primary);
}

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

.filter-status-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0.6rem;
    background: rgba(59, 130, 246, 0.15);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--color-primary);
    font-weight: 500;
}

.filter-status-tag.tag-filter {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
}

.filter-status-tag.global-tag {
    background: rgba(139, 92, 246, 0.15);
    color: #8b5cf6;
    font-weight: 600;
}

.filter-status-clear {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.4rem 0.75rem;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-sm);
    color: #ef4444;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.filter-status-clear:hover {
    background: rgba(239, 68, 68, 0.2);
}

/* 网站卡片标签 */
.site-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin-top: 0.5rem;
}

.site-tag {
    padding: 0.15rem 0.5rem;
    border-radius: var(--radius-xs);
    font-size: 0.7rem;
    font-weight: 500;
}

/* 精选徽章 */
.featured-badge {
    color: #8B5CF6;
    margin-right: 0.25rem;
}

/* 分类筛选布局 - v6.0.4 重构 */
.filter-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.filter-row-main {
    padding-bottom: 0.5rem;
    border-bottom: 1px dashed var(--color-border);
}

.filter-row-parents {
    padding-top: 0.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

/* 父级分类按钮样式 */
.filter-parent-btn {
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-parent-btn:hover {
    opacity: 0.85;
}

.filter-parent-btn.active {
    color: var(--color-primary);
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--color-primary);
}

.filter-parent-btn.expanded {
    color: var(--color-primary);
    background: rgba(59, 130, 246, 0.15);
    border-color: var(--color-primary);
}

.filter-arrow {
    font-size: 0.65rem;
    transition: transform 0.2s ease;
    opacity: 0.6;
    margin-left: 0.25rem;
}

.filter-parent-btn.expanded .filter-arrow {
    transform: rotate(180deg);
}

/* 子级分类容器 - 新的一行展开 */
.filter-row-children {
    padding: 0.75rem;
    margin-top: 0.5rem;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-primary);
}

.filter-child-btn {
    padding: 0.35rem 0.75rem;
    font-size: 0.85rem;
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.filter-child-btn:hover {
    opacity: 0.85;
    background: var(--color-bg-tertiary);
}

.filter-child-btn.active {
    color: var(--color-primary);
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--color-primary);
}

/* ========================================
   分类筛选系统 v7.0 - 无限层级支持
======================================== */
.filter-nav-v7 {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    padding: 1rem 1.25rem;
    margin-bottom: 1rem;
    border: 1px solid var(--color-border);
}

.filter-row-primary {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding-bottom: 0.75rem;
}

.filter-row-secondary {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding-top: 0.75rem;
    border-top: 1px dashed var(--color-border);
}

/* 可展开的分类按钮 */
.filter-expandable {
    font-weight: 500;
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-expandable:hover {
    background: var(--color-bg-tertiary);
    border-color: var(--color-primary);
    color: var(--color-text);
}

.filter-expandable.expanded {
    color: #fff;
    background: linear-gradient(135deg, #3B82F6, #6366F1);
    border-color: transparent;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

.filter-expandable .btn-text {
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.filter-expandable .expand-icon {
    font-size: 0.65rem;
    transition: transform 0.2s ease;
    opacity: 0.7;
}

.filter-expandable.expanded .expand-icon {
    transform: rotate(180deg);
    opacity: 1;
}

/* 子分类容器 v7 */
.filter-row-children {
    padding: 0.75rem 1rem;
    margin-top: 0.75rem;
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-primary);
    animation: slideDown 0.25s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 面包屑导航 */
.filter-breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.35rem;
    padding-bottom: 0.75rem;
    margin-bottom: 0.75rem;
    border-bottom: 1px dashed var(--color-border);
    font-size: 0.8rem;
}

.breadcrumb-item {
    color: var(--color-primary);
    cursor: pointer;
    transition: opacity var(--transition-fast);
}

.breadcrumb-item:hover {
    opacity: 0.8;
    text-decoration: underline;
}

.breadcrumb-sep {
    color: var(--color-text-tertiary);
    font-size: 0.65rem;
    opacity: 0.5;
}

.breadcrumb-current {
    color: var(--color-text-secondary);
    font-weight: 500;
}

/* 子分类列表 */
.filter-children-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

/* 子分类按钮样式 */
.filter-child-btn {
    padding: 0.4rem 0.85rem;
    font-size: 0.85rem;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.filter-child-btn:hover {
    background: var(--color-bg-tertiary);
    border-color: var(--color-primary);
    color: var(--color-text);
    transform: translateY(-1px);
}

.filter-child-btn.active {
    color: #fff;
    background: linear-gradient(135deg, #3B82F6, #6366F1);
    border-color: transparent;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.25);
}

/* 有子分类的子分类按钮 */
.filter-child-btn.has-children {
    padding-right: 0.65rem;
}

.filter-child-btn .child-arrow {
    font-size: 0.6rem;
    opacity: 0.6;
    margin-left: 0.15rem;
}

.filter-child-btn.has-children:hover .child-arrow {
    opacity: 1;
}

/* 深层分类样式递进 */
.filter-children-list .filter-children-list {
    margin-top: 0.5rem;
    padding-top: 0.5rem;
    border-top: 1px dashed var(--color-border);
}

/* ========================================
   Legal Pages
======================================== */
.legal-hero {
    background: linear-gradient(135deg, var(--color-bg-secondary), var(--color-bg-tertiary));
    padding: 4rem 0 3rem;
    text-align: center;
    border-bottom: 1px solid var(--color-border);
}

.legal-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.legal-title i {
    color: var(--color-accent);
}

.legal-update {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.legal-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 3rem 0;
}

.legal-section {
    margin-bottom: 2.5rem;
}

.legal-section h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--color-border);
}

.legal-section h3 {
    font-size: 1rem;
    font-weight: 600;
    margin: 1.5rem 0 0.75rem;
    color: var(--color-text);
}

.legal-section p {
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.legal-section ul {
    margin: 1rem 0;
    padding-left: 1.5rem;
}

.legal-section li {
    margin-bottom: 0.5rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.legal-section li strong {
    color: var(--color-text);
}

.contact-info {
    background: var(--color-bg-secondary);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.contact-info p {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.contact-info p:last-child {
    margin-bottom: 0;
}

.contact-info i {
    color: var(--color-accent);
    width: 20px;
    text-align: center;
}

/* ========================================
   Footer
======================================== */
.site-footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    margin-top: 3rem;
}

.footer-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    padding: 3rem 0;
    border-bottom: 1px solid var(--color-border);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-logo {
    width: 40px;
    height: 40px;
    color: var(--color-accent);
}

.footer-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text);
}

.footer-tagline {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.footer-nav {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-nav-group h4 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-text);
}

.footer-nav-group a {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    padding: 0.35rem 0;
    transition: color var(--transition-fast);
}

.footer-nav-group a:hover {
    color: var(--color-text);
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.5rem 0;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    text-align: center;
    gap: 0.75rem;
}

.friend-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}

.friend-links-label {
    color: var(--color-text-tertiary);
}

.friend-links a {
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

.friend-links a:not(:last-child)::after {
    content: '|';
    margin-left: 0.5rem;
    color: var(--color-border);
}

.copyright {
    color: var(--color-text-tertiary);
}

.powered-by a {
    color: var(--color-text-secondary);
    text-decoration: underline;
}

.powered-by a:hover {
    color: var(--color-text);
}

@media (max-width: 768px) {
    .footer-main {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-nav {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
}

/* ========================================
   Utility Classes
======================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.hidden { display: none !important; }
.visible { display: block !important; }

/* ========================================
   Animations
======================================== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.animate-fadeIn {
    animation: fadeIn 0.3s ease;
}

.animate-slideUp {
    animation: slideUp 0.3s ease;
}

.animate-pulse {
    animation: pulse 2s infinite;
}

/* ========================================
   Responsive Adjustments
======================================== */
@media (max-width: 1024px) {
    .sites-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
}

@media (max-width: 768px) {
    h1 { font-size: 1.5rem; }
    h2 { font-size: 1.25rem; }
    
    .hero-section {
        padding: 2rem 0;
    }
    
    .hero-title {
        font-size: 1.5rem;
    }
    
    .hero-stats {
        gap: 1rem;
    }
    
    .sites-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .filter-bar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .sort-select {
        margin-left: 0;
        width: 100%;
    }
    
    /* 移动端分类筛选 */
    .filter-row-parents {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    .filter-parent-btn {
        width: auto;
    }
    
    .filter-row-children {
        flex-direction: row;
        flex-wrap: wrap;
    }
    
    .filter-child-btn {
        flex: 0 0 auto;
    }
    
    /* 移动端高级筛选面板 */
    .sites-section-header {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }
    
    .header-actions {
        display: flex;
        gap: 0.5rem;
    }
    
    .header-actions .sort-select {
        flex: 1;
    }
    
    .advanced-filter-btn {
        flex-shrink: 0;
    }
    
    .advanced-filter-btn span {
        display: none;
    }
    
    .advanced-filter-panel {
        margin: 0 -1rem 1rem;
        border-radius: 0;
        border-left: none;
        border-right: none;
    }
    
    .filter-panel-header {
        padding: 0.75rem 1rem;
    }
    
    .filter-panel-body {
        padding: 1rem;
    }
    
    .filter-range-inputs {
        flex-wrap: wrap;
    }
    
    .filter-input {
        flex: 1;
        min-width: 80px;
    }
    
    .filter-panel-footer {
        padding: 0.75rem 1rem;
    }
    
    .filter-btn-reset,
    .filter-btn-apply {
        flex: 1;
        justify-content: center;
    }
}

/* ========================================
   Print Styles
======================================== */
@media print {
    .site-header,
    .site-footer,
    .modal-overlay,
    .mobile-nav {
        display: none !important;
    }
    
    .main-content {
        padding-top: 0;
    }
    
    body {
        background: #fff;
        color: #000;
    }
}

/* ========================================
   Enhanced Animations
======================================== */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-15px); }
    60% { transform: translateY(-8px); }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes rubberBand {
    0% { transform: scale(1); }
    30% { transform: scaleX(1.25) scaleY(0.75); }
    40% { transform: scaleX(0.75) scaleY(1.25); }
    50% { transform: scaleX(1.15) scaleY(0.85); }
    65% { transform: scaleX(0.95) scaleY(1.05); }
    75% { transform: scaleX(1.05) scaleY(0.95); }
    100% { transform: scale(1); }
}

@keyframes heartBeat {
    0% { transform: scale(1); }
    14% { transform: scale(1.3); }
    28% { transform: scale(1); }
    42% { transform: scale(1.3); }
    70% { transform: scale(1); }
}

@keyframes flash {
    0%, 50%, 100% { opacity: 1; }
    25%, 75% { opacity: 0; }
}

@keyframes swing {
    20% { transform: rotate(15deg); }
    40% { transform: rotate(-10deg); }
    60% { transform: rotate(5deg); }
    80% { transform: rotate(-5deg); }
    100% { transform: rotate(0deg); }
}

@keyframes wobble {
    0% { transform: translateX(0%); }
    15% { transform: translateX(-25%) rotate(-5deg); }
    30% { transform: translateX(20%) rotate(3deg); }
    45% { transform: translateX(-15%) rotate(-3deg); }
    60% { transform: translateX(10%) rotate(2deg); }
    75% { transform: translateX(-5%) rotate(-1deg); }
    100% { transform: translateX(0%); }
}

@keyframes jello {
    0%, 11.1%, 100% { transform: none; }
    22.2% { transform: skewX(-12.5deg) skewY(-12.5deg); }
    33.3% { transform: skewX(6.25deg) skewY(6.25deg); }
    44.4% { transform: skewX(-3.125deg) skewY(-3.125deg); }
    55.5% { transform: skewX(1.5625deg) skewY(1.5625deg); }
    66.6% { transform: skewX(-0.78125deg) skewY(-0.78125deg); }
    77.7% { transform: skewX(0.390625deg) skewY(0.390625deg); }
    88.8% { transform: skewX(-0.1953125deg) skewY(-0.1953125deg); }
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes ripple {
    0% {
        transform: scale(0);
        opacity: 1;
    }
    100% {
        transform: scale(4);
        opacity: 0;
    }
}

/* Animation Classes */
.animate-float { animation: float 3s ease-in-out infinite; }
.animate-shake { animation: shake 0.5s ease-in-out; }
.animate-bounce { animation: bounce 1s ease infinite; }
.animate-spin { animation: spin 1s linear infinite; }
.animate-rubberBand { animation: rubberBand 1s ease; }
.animate-heartBeat { animation: heartBeat 1.5s ease-in-out infinite; }
.animate-flash { animation: flash 1s ease; }
.animate-swing { animation: swing 1s ease; }
.animate-wobble { animation: wobble 1s ease; }
.animate-jello { animation: jello 0.9s ease; }

/* Hover Animations */
.hover-bounce:hover { animation: bounce 0.5s ease; }
.hover-shake:hover { animation: shake 0.5s ease; }
.hover-rubberBand:hover { animation: rubberBand 0.5s ease; }
.hover-swing:hover { animation: swing 0.5s ease; }
.hover-wobble:hover { animation: wobble 0.5s ease; }
.hover-jello:hover { animation: jello 0.5s ease; }
.hover-heartBeat:hover { animation: heartBeat 0.5s ease; }

/* Staggered Animation Delays */
.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; }
.stagger-6 { animation-delay: 0.6s; }
.stagger-7 { animation-delay: 0.7s; }
.stagger-8 { animation-delay: 0.8s; }

/* Card Animations */
.site-card {
    animation: slideUp 0.4s ease backwards;
    transition: all var(--transition-normal);
}

.site-card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

.site-card:nth-child(1) { animation-delay: 0.05s; }
.site-card:nth-child(2) { animation-delay: 0.1s; }
.site-card:nth-child(3) { animation-delay: 0.15s; }
.site-card:nth-child(4) { animation-delay: 0.2s; }
.site-card:nth-child(5) { animation-delay: 0.25s; }
.site-card:nth-child(6) { animation-delay: 0.3s; }
.site-card:nth-child(7) { animation-delay: 0.35s; }
.site-card:nth-child(8) { animation-delay: 0.4s; }

/* Quick Action Card Animations */
.quick-action-card {
    position: relative;
    overflow: hidden;
}

.quick-action-card::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(59, 130, 246, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.quick-action-card:hover::before {
    width: 300px;
    height: 300px;
}

.quick-action-card:hover .quick-action-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.35);
}

.quick-action-icon {
    transition: all var(--transition-normal);
}

/* Hero Animations */
.hero-title {
    animation: fadeIn 0.6s ease, slideUp 0.6s ease;
}

.hero-subtitle {
    animation: fadeIn 0.6s ease 0.2s backwards, slideUp 0.6s ease 0.2s backwards;
}

.hero-stats {
    animation: fadeIn 0.6s ease 0.4s backwards;
}

.stat-item {
    animation: slideUp 0.4s ease backwards;
}

.stat-item:nth-child(1) { animation-delay: 0.5s; }
.stat-item:nth-child(2) { animation-delay: 0.6s; }
.stat-item:nth-child(3) { animation-delay: 0.7s; }

.stat-number {
    transition: transform var(--transition-normal);
}

.stat-item:hover .stat-number {
    transform: scale(1.1);
    color: var(--color-primary);
}

/* Filter Button Animations */
.filter-btn {
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.filter-btn::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-gradient);
    transition: all var(--transition-normal);
    transform: translateX(-50%);
}

.filter-btn:hover::after,
.filter-btn.active::after {
    width: 80%;
}

/* Active state hover - just opacity change */
.filter-btn.active:hover {
    opacity: 0.85;
}

/* ============================================
   Favorite Button Animation - 优化版
   ============================================ */
.favorite-btn {
    transition: all 0.25s ease;
    position: relative;
    color: var(--color-text-secondary);
}

.favorite-btn:hover {
    color: #EF4444;
}

.favorite-btn.active {
    color: #EF4444 !important;
}

.favorite-btn.active i {
    animation: heartBeat 0.4s ease;
}

/* 收藏按钮激活动画 */
.favorite-btn.animating {
    animation: favoritePop 0.5s ease;
    color: #EF4444 !important;
}

@keyframes favoritePop {
    0% { transform: scale(1); }
    30% { transform: scale(1.2); }
    60% { transform: scale(0.95); }
    100% { transform: scale(1); }
}

/* 粒子爆发效果 */
.favorite-particle {
    position: absolute;
    width: 6px;
    height: 6px;
    background: #EF4444;
    border-radius: 50%;
    pointer-events: none;
    animation: particleExplode 0.5s ease-out forwards;
}

@keyframes particleExplode {
    0% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 1;
    }
    100% {
        transform: translate(var(--tx), var(--ty)) scale(0);
        opacity: 0;
    }
}

/* ============================================
   Like Button Animation - 优化版
   ============================================ */
.like-btn {
    transition: all 0.25s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    position: relative;
    color: var(--color-text-secondary);
}

.like-btn:hover {
    color: #3B82F6;
}

.like-btn.active {
    color: #3B82F6 !important;
}

.like-btn .like-count {
    font-size: 0.75rem;
    font-weight: 600;
    transition: all 0.25s ease;
}

.like-btn.active .like-count {
    color: #3B82F6;
    font-weight: 700;
}

/* 点赞按钮激活动画 */
.like-btn.animating {
    animation: likePop 0.5s ease;
    color: #3B82F6 !important;
}

@keyframes likePop {
    0% { transform: scale(1); }
    30% { transform: scale(1.2); }
    60% { transform: scale(0.95); }
    100% { transform: scale(1); }
}

/* 点赞粒子效果 */
.like-particle {
    position: absolute;
    width: 7px;
    height: 7px;
    background: #3B82F6;
    border-radius: 50%;
    pointer-events: none;
    animation: particleExplode 0.6s ease-out forwards;
}

/* 心跳动画优化 */
@keyframes heartBeat {
    0% { transform: scale(1); }
    14% { transform: scale(1.3); }
    28% { transform: scale(1); }
    42% { transform: scale(1.3); }
    70% { transform: scale(1); }
}

/* 按钮波纹效果 */
.action-btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255,255,255,0.3) 0%, transparent 70%);
    transform: translate(-50%, -50%) scale(0);
    border-radius: 50%;
    opacity: 0;
    pointer-events: none;
}

.action-btn.ripple::after {
    animation: rippleEffect 0.6s ease-out;
}

@keyframes rippleEffect {
    0% {
        transform: translate(-50%, -50%) scale(0);
        opacity: 1;
    }
    100% {
        transform: translate(-50%, -50%) scale(2.5);
        opacity: 0;
    }
}

/* Visit Button Animation */
.visit-btn:hover {
    transform: translateX(3px);
}

/* Loading Animation */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, var(--color-bg-tertiary) 25%, var(--color-bg-secondary) 50%, var(--color-bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

/* Ripple Effect */
.ripple {
    position: relative;
    overflow: hidden;
}

.ripple-effect {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    animation: ripple 0.6s linear;
    pointer-events: none;
}

/* Modal Animations */
.modal-overlay {
    animation: fadeIn 0.2s ease;
}

.modal-content {
    animation: slideUp 0.3s ease;
}

/* Toast Notification Animation */
.toast {
    animation: slideUp 0.3s ease, fadeIn 0.3s ease;
}

.toast.hide {
    animation: slideDown 0.3s ease forwards;
}

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

/* Scroll Indicator */
.scroll-indicator {
    animation: float 2s ease-in-out infinite;
}

/* Icon Rotate on Hover */
.icon-rotate-hover:hover i {
    transform: rotate(360deg);
    transition: transform 0.5s ease;
}

/* Gradient Text Animation */
.gradient-text-animated {
    background: linear-gradient(270deg, var(--color-primary), var(--color-accent), var(--color-primary));
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 3s ease infinite;
}

/* Glow Effect */
.glow {
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
}

.glow:hover {
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.5);
}

/* Neon Effect */
.neon-text {
    text-shadow: 
        0 0 5px var(--color-primary),
        0 0 10px var(--color-primary),
        0 0 20px var(--color-primary),
        0 0 40px var(--color-primary);
}

/* Typing Animation */
.typing {
    overflow: hidden;
    border-right: 2px solid var(--color-primary);
    white-space: nowrap;
    animation: typing 3s steps(40) infinite, blink 0.75s step-end infinite;
}

@keyframes typing {
    from { width: 0; }
    to { width: 100%; }
}

@keyframes blink {
    from, to { border-color: transparent; }
    50% { border-color: var(--color-primary); }
}

/* Parallax Effect Helper */
.parallax {
    transition: transform 0.1s ease-out;
}

/* 3D Card Effect */
.card-3d {
    perspective: 1000px;
}

.card-3d-inner {
    transition: transform 0.6s;
    transform-style: preserve-3d;
}

.card-3d:hover .card-3d-inner {
    transform: rotateY(10deg) rotateX(5deg);
}

/* Floating Action Button */
.fab {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--color-gradient);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    z-index: var(--z-fixed);
}

.fab:hover {
    transform: scale(1.1) rotate(90deg);
    box-shadow: var(--shadow-xl);
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: var(--z-fixed);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--color-primary);
    color: #fff;
    transform: translateY(-3px);
}

/* Confetti Animation */
@keyframes confetti-fall {
    0% {
        transform: translateY(-100vh) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) rotate(720deg);
        opacity: 0;
    }
}

.confetti {
    position: fixed;
    width: 10px;
    height: 10px;
    top: -10px;
    animation: confetti-fall 3s linear forwards;
    z-index: 9999;
}

/* Page Transition */
.page-transition-enter {
    opacity: 0;
    transform: translateY(20px);
}

.page-transition-enter-active {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.3s ease;
}

.page-transition-exit {
    opacity: 1;
}

.page-transition-exit-active {
    opacity: 0;
    transition: opacity 0.3s ease;
}


/* ========================================
   Header Styles
======================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: var(--header-bg);
    border-bottom: 1px solid var(--header-border);
    z-index: var(--z-fixed);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.header-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

/* Logo Styles with Animation */
.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--header-text);
    flex-shrink: 0;
    transition: all var(--transition-normal);
}

.logo:hover {
    transform: scale(1.02);
}

.logo-icon {
    width: 36px;
    height: 36px;
    position: relative;
    animation: logoFloat 3s ease-in-out infinite;
}

.logo-icon svg {
    width: 100%;
    height: 100%;
    color: var(--color-accent);
    filter: drop-shadow(0 0 8px rgba(16, 185, 129, 0.4));
    transition: all var(--transition-normal);
}

.logo:hover .logo-icon svg {
    color: var(--color-primary);
    filter: drop-shadow(0 0 12px rgba(59, 130, 246, 0.6));
    transform: rotate(180deg);
}

.logo-icon::before {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    opacity: 0;
    z-index: -1;
    transition: all var(--transition-normal);
    animation: logoPulse 2s ease-in-out infinite;
}

.logo:hover .logo-icon::before {
    opacity: 0.3;
    inset: -8px;
}

@keyframes logoFloat {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    25% { transform: translateY(-2px) rotate(2deg); }
    75% { transform: translateY(2px) rotate(-2deg); }
}

@keyframes logoPulse {
    0%, 100% { transform: scale(1); opacity: 0; }
    50% { transform: scale(1.2); opacity: 0.2; }
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-title {
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    background: linear-gradient(135deg, #fff 0%, #a1a1aa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: all var(--transition-normal);
}

.logo:hover .logo-title {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-primary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
}

.logo-subtitle {
    font-size: 0.65rem;
    color: var(--header-text-secondary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    opacity: 0.7;
    transition: all var(--transition-normal);
}

.logo:hover .logo-subtitle {
    opacity: 1;
    color: var(--color-accent);
}

/* Navigation Styles */
.main-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex: 1;
    justify-content: center;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    color: var(--header-text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--header-text);
    background: rgba(255, 255, 255, 0.1);
}

.nav-link.active::before {
    opacity: 0.15;
}

.nav-link i {
    font-size: 0.9rem;
    position: relative;
    z-index: 1;
}

.nav-link span {
    position: relative;
    z-index: 1;
}

/* Dropdown */
.nav-dropdown {
    position: relative;
}

.dropdown-toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
}

.dropdown-arrow {
    font-size: 0.65rem;
    margin-left: 0.25rem;
    transition: transform var(--transition-fast);
}

.nav-dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    min-width: 180px;
    background: var(--header-bg);
    border: 1px solid var(--header-border);
    border-radius: var(--radius-lg);
    padding: 0.5rem;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-xl);
}

.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 0.875rem;
    color: var(--header-text-secondary);
    font-size: 0.875rem;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--header-text);
}

.dropdown-item i {
    width: 16px;
    text-align: center;
    color: var(--color-accent);
}

.dropdown-divider {
    height: 1px;
    background: var(--header-border);
    margin: 0.5rem 0;
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* Search Box */
.search-box {
    position: relative;
}

.search-box form {
    display: flex;
    align-items: center;
    position: relative;
}

.search-box input {
    width: 180px;
    padding: 0.5rem 0.75rem 0.5rem 2.5rem;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--header-border);
    border-radius: var(--radius-full);
    color: var(--header-text);
    font-size: 0.85rem;
    transition: all var(--transition-fast);
}

.search-box input::placeholder {
    color: var(--header-text-secondary);
    opacity: 0.7;
}

.search-box input:focus {
    outline: none;
    width: 240px;
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.search-box button {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--header-text-secondary);
    cursor: pointer;
    transition: color var(--transition-fast);
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    z-index: 1;
}

.search-box button:hover {
    color: var(--color-accent);
}

/* 确保输入框文字不会和图标重叠 */
.search-box input {
    padding-left: 2.5rem;
}

/* Theme Toggle - 更显眼的样式 */
.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(139, 92, 246, 0.2));
    border: 2px solid rgba(59, 130, 246, 0.4);
    color: var(--header-text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.2);
}

.theme-toggle:hover {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.3), rgba(139, 92, 246, 0.3));
    border-color: var(--color-primary);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
    transform: scale(1.05);
}

.theme-toggle i {
    position: absolute;
    font-size: 1rem;
    transition: all var(--transition-normal);
}

#theme-icon-sun {
    opacity: 0;
    transform: rotate(-180deg) scale(0);
}

#theme-icon-moon {
    opacity: 1;
    transform: rotate(0) scale(1);
}

[data-theme="dark"] #theme-icon-sun {
    opacity: 1;
    transform: rotate(0) scale(1);
}

[data-theme="dark"] #theme-icon-moon {
    opacity: 0;
    transform: rotate(180deg) scale(0);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--header-border);
    cursor: pointer;
    position: relative;
}

.hamburger {
    width: 18px;
    height: 2px;
    background: var(--header-text);
    position: relative;
    transition: all var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: inherit;
    transition: all var(--transition-fast);
}

.hamburger::before { top: -6px; }
.hamburger::after { top: 6px; }

.mobile-menu-toggle.active .hamburger {
    background: transparent;
}

.mobile-menu-toggle.active .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.mobile-menu-toggle.active .hamburger::after {
    top: 0;
    transform: rotate(-45deg);
}

/* Mobile Navigation */
.mobile-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--header-bg);
    padding: 1.5rem;
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
    z-index: calc(var(--z-fixed) - 1);
    overflow-y: auto;
}

.mobile-nav.active {
    transform: translateX(0);
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    color: var(--header-text-secondary);
    font-size: 1rem;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.mobile-nav-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--header-text);
}

.mobile-nav-link i {
    width: 20px;
    text-align: center;
    color: var(--color-accent);
}

.mobile-nav-divider {
    height: 1px;
    background: var(--header-border);
    margin: 1rem 0;
}

/* Responsive Header */
@media (max-width: 1024px) {
    .main-nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .search-box {
        display: none;
    }
}

@media (max-width: 640px) {
    .site-header {
        height: 56px;
    }
    
    .header-inner {
        padding: 0 1rem;
    }
    
    .logo-icon {
        width: 32px;
        height: 32px;
    }
    
    .logo-title {
        font-size: 0.9rem;
    }
    
    .logo-subtitle {
        font-size: 0.55rem;
    }
    
    .mobile-nav {
        top: 56px;
    }
}

/* ========================================
   Floating Navigation (Draggable)
======================================== */
.floating-category-nav {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: var(--z-fixed);
    transition: none;
}

.floating-category-nav.dragging {
    transition: none !important;
}

.floating-nav-toggle {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border: none;
    color: #fff;
    font-size: 1.25rem;
    cursor: grab;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
    transition: all var(--transition-normal);
    touch-action: none;
}

.floating-nav-toggle:active {
    cursor: grabbing;
    transform: scale(1.1);
}

.floating-nav-toggle:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 25px rgba(59, 130, 246, 0.5);
}

.floating-nav-content {
    position: absolute;
    bottom: 60px;
    right: 0;
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-xl);
    min-width: 120px;
}

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

.floating-nav-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 0.875rem;
    color: var(--color-text);
    font-size: 0.85rem;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.floating-nav-item:hover {
    background: var(--color-bg-secondary);
    color: var(--color-primary);
}

.floating-nav-item i {
    color: var(--color-accent);
    width: 16px;
    text-align: center;
}

/* Position indicator */
.floating-position {
    position: absolute;
    bottom: 55px;
    right: 0;
    background: rgba(0, 0, 0, 0.8);
    color: #fff;
    font-size: 0.7rem;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    white-space: nowrap;
    opacity: 0;
    transition: opacity var(--transition-fast);
    pointer-events: none;
}

.floating-category-nav.dragging .floating-position {
    opacity: 1;
}

/* ========================================
   Custom Fonts Settings
======================================== */
.font-system { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; }
.font-inter { font-family: 'Inter', sans-serif; }
.font-noto { font-family: 'Noto Sans SC', sans-serif; }
.font-roboto { font-family: 'Roboto', sans-serif; }
.font-poppins { font-family: 'Poppins', sans-serif; }
.font-montserrat { font-family: 'Montserrat', sans-serif; }
.font-lato { font-family: 'Lato', sans-serif; }
.font-opensans { font-family: 'Open Sans', sans-serif; }
.font-source { font-family: 'Source Sans Pro', sans-serif; }
.font-raleway { font-family: 'Raleway', sans-serif; }

/* ========================================
   Utility Classes
======================================== */
/* 彻底隐藏tech-item元素，优先级最高 */
.tech-item {
    display: none !important; /* 隐藏元素，不占页面空间 */
    visibility: hidden !important; /* 双重保障，避免残留 */
}

/* 若元素用flex布局仍有残留，补充： */
.tech-item {
    flex: none !important; /* 取消flex布局 */
    width: 0 !important;
    height: 0 !important;
    margin: 0 !important;
    padding: 0 !important;
}

/* ========================================
   Mobile Optimization - 手机版全局优化
======================================== */
@media (max-width: 768px) {
    /* 容器适配 */
    .container {
        padding-left: 12px;
        padding-right: 12px;
    }
    
    /* 页脚优化 */
    .site-footer {
        padding: 1.5rem 0;
    }
    
    .footer-main {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
    
    .footer-brand {
        align-items: center;
    }
    
    .footer-nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }
    
    .footer-nav-group {
        min-width: 120px;
        text-align: center;
    }
    
    .footer-nav-group h4 {
        font-size: 0.875rem;
    }
    
    .footer-nav-group a {
        font-size: 0.75rem;
    }
    
    /* 头部导航 */
    .header-inner {
        padding: 0 12px;
    }
    
    .nav-links {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    /* 回到顶部按钮 */
    .back-to-top {
        width: 36px;
        height: 36px;
        right: 12px;
        bottom: 80px;
        font-size: 0.875rem;
    }
    
    /* 弹窗适配 */
    .modal-content {
        width: 95%;
        max-height: 85vh;
        margin: 0 auto;
    }
    
    /* 网站卡片通用 */
    .site-card {
        border-radius: var(--radius-sm);
    }
    
    .site-card-inner {
        padding: 0.625rem;
    }
    
    /* 按钮 */
    .btn {
        padding: 0.5rem 0.875rem;
        font-size: 0.8rem;
    }
    
    /* 搜索相关 */
    .search-form {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .container {
        padding-left: 8px;
        padding-right: 8px;
    }
    
    .footer-nav-group {
        min-width: 100px;
    }
    
    .back-to-top {
        width: 32px;
        height: 32px;
        bottom: 70px;
    }
}

/* ========================================
   移动端触摸修复
======================================== */
@media (hover: none) and (pointer: coarse) {
    /* 禁用移动端的 hover 效果，避免触摸后样式残留 */
    .site-card:hover,
    .site-card:active,
    .quick-link-card:hover,
    .quick-link-card:active,
    .function-entry-card:hover,
    .function-entry-card:active,
    .carousel-card:hover,
    .carousel-card:active,
    .btn:hover,
    .btn:active,
    .action-btn:hover,
    .action-btn:active,
    .favorite-btn:hover,
    .favorite-btn:active,
    .like-btn:hover,
    .like-btn:active {
        transform: none;
        box-shadow: inherit;
    }
    
    /* 仅保留点击时的视觉反馈 */
    .site-card.tapped,
    .quick-link-card.tapped,
    .function-entry-card.tapped,
    .carousel-card.tapped {
        opacity: 0.8;
        transform: scale(0.98);
        transition: opacity 0.1s, transform 0.1s;
    }
    
    .btn.tapped,
    .action-btn.tapped,
    .favorite-btn.tapped,
    .like-btn.tapped {
        opacity: 0.7;
        transform: scale(0.95);
        transition: opacity 0.1s, transform 0.1s;
    }
    
    /* 筛选按钮触摸反馈 */
    .filter-btn.tapped,
    .filter-parent-btn.tapped,
    .filter-child-btn.tapped {
        opacity: 0.7;
        transform: scale(0.95);
        transition: opacity 0.1s, transform 0.1s;
    }
    
    /* 筛选按钮禁用hover效果 */
    .filter-btn:hover,
    .filter-parent-btn:hover,
    .filter-child-btn:hover {
        opacity: 1;
        transform: none;
    }
    
    /* 网站卡片选中状态 */
    .site-card:focus,
    .site-card:focus-within {
        outline: none;
    }
}
    /* 网站卡片选中状态 */
    .site-card:focus,
    .site-card:focus-within {
        outline: none;
    }
}

/* ========================================
   移动端全面优化 v7.0
======================================== */
@media (max-width: 768px) {
    /* ========== 主内容区域 ========== */
    .main-content {
        padding-top: 12px;
    }
    
    /* ========== Hero区域优化 ========== */
    .hero-section-centered {
        padding: 1rem 0 0.75rem;
    }
    
    .hero-brand {
        margin-bottom: 0.75rem;
    }
    
    .hero-logo {
        width: 36px;
        height: 36px;
        margin-bottom: 0.5rem;
    }
    
    .hero-title {
        font-size: 1.25rem;
        margin-bottom: 0.15rem;
    }
    
    .hero-subtitle {
        font-size: 0.75rem;
    }
    
    /* 搜索框 */
    .centered-search {
        margin-bottom: 0.75rem;
    }
    
    .search-form-large .search-input-wrapper {
        height: 42px;
    }
    
    .search-form-large input {
        font-size: 0.9rem;
        padding: 0 0.75rem;
    }
    
    .search-btn {
        padding: 0 1rem;
        font-size: 0.85rem;
    }
    
    /* 搜索引擎按钮 */
    .home-search-engines {
        gap: 0.4rem;
        margin-top: 0.6rem;
    }
    
    .home-engine-btn {
        padding: 0.35rem 0.6rem;
        font-size: 0.7rem;
        border-radius: 16px;
    }
    
    .home-engine-btn i {
        font-size: 0.8rem;
    }
    
    .home-engine-btn span {
        display: none; /* 手机端只显示图标 */
    }
    
    /* 统计数字 */
    .hero-stats-inline {
        gap: 0.75rem;
        padding: 0.5rem 0;
    }
    
    .stat-item {
        padding: 0.4rem 0.6rem;
    }
    
    .stat-item .stat-number {
        font-size: 1rem;
    }
    
    .stat-item .stat-label {
        font-size: 0.65rem;
    }
    
    /* ========== 快捷操作区优化 ========== */
    .quick-actions-compact {
        padding: 0.5rem 0;
    }
    
    .quick-actions-grid {
        display: grid;
        grid-template-columns: repeat(6, 1fr);
        gap: 0.4rem;
    }
    
    .quick-action-card {
        flex-direction: column;
        align-items: center;
        justify-content: center;
        padding: 0.5rem 0.25rem;
        min-height: auto;
    }
    
    .quick-action-icon {
        width: 32px;
        height: 32px;
        border-radius: 10px;
        margin-bottom: 0.25rem;
    }
    
    .quick-action-icon i {
        font-size: 0.9rem;
    }
    
    .quick-action-label {
        font-size: 0.65rem;
        text-align: center;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        max-width: 100%;
    }
    
    /* ========== 站长精选区优化 ========== */
    .featured-carousel-section {
        padding: 0.5rem 0;
    }
    
    .section-header-centered {
        margin-bottom: 0.5rem;
        padding: 0 0.25rem;
    }
    
    .section-title {
        font-size: 0.9rem;
    }
    
    .section-title i {
        font-size: 0.8rem;
    }
    
    .collapse-toggle {
        width: 24px;
        height: 24px;
        border-radius: 6px;
    }
    
    .carousel-controls {
        gap: 0.25rem;
    }
    
    .carousel-btn {
        width: 28px;
        height: 28px;
        border-radius: 8px;
    }
    
    .carousel-btn i {
        font-size: 0.7rem;
    }
    
    .carousel-wrapper {
        padding: 0.25rem 0;
    }
    
    .carousel-item {
        min-width: 140px;
        padding: 0 0.3rem;
    }
    
    .carousel-card {
        padding: 0.75rem 0.5rem;
        border-radius: 10px;
    }
    
    .carousel-icon {
        width: 36px;
        height: 36px;
        border-radius: 8px;
        margin-bottom: 0.4rem;
    }
    
    .carousel-icon img {
        width: 28px;
        height: 28px;
    }
    
    .carousel-info h4 {
        font-size: 0.75rem;
        margin-bottom: 0.15rem;
    }
    
    .carousel-info p {
        font-size: 0.65rem;
        display: -webkit-box;
        -webkit-line-clamp: 1;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    
    .carousel-badge {
        top: 6px;
        right: 6px;
        font-size: 0.6rem;
        padding: 2px 4px;
    }
    
    /* ========== 分类筛选区优化 - 横向滚动布局 ========== */
    .main-sites-section {
        padding-top: 0.5rem;
    }
    
    .sites-section-header {
        margin-bottom: 0.5rem;
        padding: 0 0.25rem;
    }
    
    .filter-nav-v7 {
        padding: 0;
        margin-bottom: 0.5rem;
        border-radius: 0;
        background: transparent;
        border: none;
    }
    
    /* 分类行 - 横向滚动 */
    .filter-row-primary,
    .filter-row-secondary {
        display: flex !important;
        flex-wrap: nowrap !important;
        overflow-x: auto !important;
        overflow-y: hidden !important;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none !important;
        -ms-overflow-style: none !important;
        gap: 0.5rem !important;
        padding: 0.5rem 0.75rem;
        margin: 0;
    }
    
    .filter-row-primary::-webkit-scrollbar,
    .filter-row-secondary::-webkit-scrollbar {
        display: none;
    }
    
    .filter-row-primary {
        border-bottom: 1px solid var(--color-border);
        padding-bottom: 0.6rem;
    }
    
    .filter-row-secondary {
        padding-top: 0.6rem;
        border-bottom: 1px solid var(--color-border);
        padding-bottom: 0.6rem;
    }
    
    /* 分类按钮 - 紧凑样式 */
    .filter-btn {
        flex-shrink: 0;
        padding: 0.5rem 0.85rem;
        font-size: 0.8rem;
        border-radius: 20px;
        white-space: nowrap;
        background: var(--color-bg-primary);
        border: 1px solid var(--color-border);
        color: var(--color-text-secondary);
        transition: all 0.2s ease;
    }
    
    .filter-btn i {
        font-size: 0.7rem;
        margin-right: 0.25rem;
    }
    
    .filter-btn.active {
        background: linear-gradient(135deg, #3B82F6, #6366F1);
        color: #fff;
        border-color: transparent;
        box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
    }
    
    /* 可展开按钮 */
    .filter-expandable {
        flex-shrink: 0;
        padding: 0.5rem 0.85rem;
        font-size: 0.8rem;
        border-radius: 20px;
        white-space: nowrap;
        background: var(--color-bg-primary);
        border: 1px solid var(--color-border);
        color: var(--color-text-secondary);
    }
    
    .filter-expandable .btn-text {
        max-width: none;
    }
    
    .filter-expandable .expand-icon {
        font-size: 0.6rem;
        margin-left: 0.25rem;
    }
    
    .filter-expandable.expanded {
        background: linear-gradient(135deg, #3B82F6, #6366F1);
        color: #fff;
        border-color: transparent;
        box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
    }
    
    /* 子分类容器 - 横向滚动 */
    .filter-row-children {
        display: flex !important;
        flex-direction: column;
        padding: 0 !important;
        margin: 0 !important;
        background: var(--color-bg-secondary);
        border: none !important;
        border-bottom: 1px solid var(--color-border) !important;
        border-radius: 0 !important;
        border-left: none !important;
    }
    
    /* 面包屑 - 横向滚动 */
    .filter-breadcrumb {
        display: flex !important;
        flex-wrap: nowrap !important;
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none !important;
        -ms-overflow-style: none !important;
        gap: 0.25rem;
        padding: 0.5rem 0.75rem;
        margin: 0 !important;
        font-size: 0.7rem;
        border-bottom: 1px dashed var(--color-border);
    }
    
    .filter-breadcrumb::-webkit-scrollbar {
        display: none;
    }
    
    .breadcrumb-item,
    .breadcrumb-current {
        white-space: nowrap;
    }
    
    /* 子分类列表 - 横向滚动 */
    .filter-children-list {
        display: flex !important;
        flex-wrap: nowrap !important;
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none !important;
        -ms-overflow-style: none !important;
        gap: 0.5rem !important;
        padding: 0.6rem 0.75rem;
    }
    
    .filter-children-list::-webkit-scrollbar {
        display: none;
    }
    
    /* 子分类按钮 */
    .filter-child-btn {
        flex-shrink: 0;
        padding: 0.45rem 0.85rem;
        font-size: 0.8rem;
        border-radius: 18px;
        white-space: nowrap;
        background: var(--color-bg-primary);
        border: 1px solid var(--color-border);
        color: var(--color-text-secondary);
    }
    
    .filter-child-btn .child-arrow {
        font-size: 0.55rem;
        margin-left: 0.2rem;
    }
    
    .filter-child-btn.active {
        background: linear-gradient(135deg, #3B82F6, #6366F1);
        color: #fff;
        border-color: transparent;
        box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
    }
    
    /* 排序下拉框 */
    .sort-select {
        padding: 0.35rem 0.6rem;
        font-size: 0.75rem;
        border-radius: 8px;
    }
    
    /* ========== 网站卡片优化 ========== */
    .sites-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.6rem;
        padding: 0.6rem 0;
    }
    
    .site-card {
        border-radius: 12px;
        min-height: 110px;
    }
    
    .site-card-inner {
        padding: 0.75rem;
    }
    
    .site-card-header {
        gap: 0.6rem;
        margin-bottom: 0.6rem;
    }
    
    .site-icon {
        width: 40px;
        height: 40px;
        border-radius: 8px;
    }
    
    .site-icon-placeholder {
        width: 40px;
        height: 40px;
        border-radius: 8px;
        font-size: 1rem;
    }
    
    .site-title {
        font-size: 0.85rem;
        margin-bottom: 0.15rem;
    }
    
    .site-title .featured-badge,
    .site-title .recommended-badge {
        font-size: 0.55rem;
        padding: 1px 3px;
        margin-right: 2px;
    }
    
    .site-description {
        font-size: 0.7rem;
        -webkit-line-clamp: 2;
    }
    
    /* 标签 */
    .site-tags {
        margin-top: 0.3rem;
        gap: 0.25rem;
    }
    
    .site-tag {
        font-size: 0.6rem;
        padding: 2px 6px;
        border-radius: 4px;
    }
    
    /* 底部操作区 */
    .site-card-footer {
        padding-top: 0.5rem;
    }
    
    .click-count {
        font-size: 0.7rem;
    }
    
    .click-count i {
        font-size: 0.65rem;
    }
    
    .action-btn {
        width: 28px;
        height: 28px;
        border-radius: 8px;
    }
    
    .action-btn i {
        font-size: 0.75rem;
    }
    
    .like-count {
        font-size: 0.65rem;
    }
    
    /* ========== 分页优化 ========== */
    .pagination-wrapper {
        padding: 1.5rem 0 1rem;
    }
    
    .pagination-container {
        gap: 3px;
    }
    
    .pagination-btn {
        min-width: 32px;
        height: 32px;
        padding: 0 10px;
        font-size: 0.8rem;
        border-radius: 6px;
    }
    
    .pagination-btn.prev,
    .pagination-btn.next {
        padding: 0 8px;
    }
    
    .pagination-btn span {
        display: none;
    }
    
    .pagination-stats {
        font-size: 0.75rem;
    }
    
    /* ========== 功能入口区优化 ========== */
    .function-entries {
        padding: 0.5rem 0;
    }
    
    .function-entries-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }
    
    .function-entry-card {
        padding: 0.75rem;
        border-radius: 12px;
    }
    
    .function-entry-icon {
        width: 36px;
        height: 36px;
        border-radius: 10px;
        margin-right: 0.6rem;
    }
    
    .function-entry-icon i {
        font-size: 1rem;
    }
    
    .function-entry-info h3 {
        font-size: 0.85rem;
        margin-bottom: 0.1rem;
    }
    
    .function-entry-info p {
        font-size: 0.7rem;
    }
    
    /* ========== 空状态 ========== */
    .empty-state {
        padding: 2rem 1rem;
    }
    
    .empty-state i {
        font-size: 2rem;
        margin-bottom: 0.75rem;
    }
    
    .empty-state p {
        font-size: 0.85rem;
    }
}

/* ========== 超小屏幕优化 (≤480px) ========== */
@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }
    
    /* 快捷操作区 - 更紧凑 */
    .quick-actions-grid {
        grid-template-columns: repeat(6, 1fr);
        gap: 0.3rem;
    }
    
    .quick-action-icon {
        width: 28px;
        height: 28px;
        border-radius: 8px;
    }
    
    .quick-action-label {
        font-size: 0.6rem;
    }
    
    /* 网站卡片 - 单列布局 */
    .sites-grid {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    
    .site-card {
        border-radius: 10px;
    }
    
    /* 站长精选 - 滑动优化 */
    .carousel-item {
        min-width: 130px;
    }
    
    .carousel-card {
        padding: 0.6rem 0.4rem;
    }
    
    .carousel-icon {
        width: 32px;
        height: 32px;
    }
    
    .carousel-info h4 {
        font-size: 0.7rem;
    }
    
    .carousel-info p {
        display: none;
    }
    
    /* 功能入口 - 单列 */
    .function-entries-grid {
        grid-template-columns: 1fr;
    }
    
    .function-entry-card {
        padding: 0.6rem;
    }
    
    .function-entry-icon {
        width: 32px;
        height: 32px;
        margin-right: 0.5rem;
    }
    
    .function-entry-info h3 {
        font-size: 0.8rem;
    }
    
    .function-entry-info p {
        font-size: 0.65rem;
    }
}

/* ========== 分类筛选折叠展开动画优化 ========== */
@media (max-width: 768px) {
    .filter-row-children {
        animation: slideDownMobile 0.2s ease;
    }
    
    @keyframes slideDownMobile {
        from {
            opacity: 0;
            transform: translateY(-6px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    /* 搜索建议标签优化 */
    .search-suggestions {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.3rem;
        padding: 0.4rem 0;
    }
    
    .suggestion-label {
        font-size: 0.65rem;
        width: 100%;
        text-align: center;
        margin-bottom: 0.2rem;
    }
    
    .suggestion-tag {
        font-size: 0.65rem;
        padding: 0.2rem 0.5rem;
        border-radius: 10px;
    }
}

/* ========== 横屏模式优化 ========== */
@media (max-width: 896px) and (orientation: landscape) {
    .hero-section-centered {
        padding: 0.5rem 0;
    }
    
    .hero-brand {
        margin-bottom: 0.4rem;
    }
    
    .quick-actions-compact {
        padding: 0.3rem 0;
    }
    
    .featured-carousel-section {
        padding: 0.3rem 0;
    }
    
    .carousel-item {
        min-width: 120px;
    }
    
    .sites-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.4rem;
    }
}

/* ========================================
   手机端分类横向滚动 - 最高优先级
======================================== */
@media screen and (max-width: 768px) {
    /* 强制横向滚动 - 使用body下完整路径选择器 */
    body .filter-nav-v7 .filter-row-primary,
    body .filter-nav-v7 .filter-row-secondary,
    body #filter-nav-v7 .filter-row-primary,
    body #filter-nav-v7 .filter-row-secondary {
        display: -webkit-box !important;
        display: -ms-flexbox !important;
        display: flex !important;
        -webkit-box-orient: horizontal !important;
        -webkit-box-direction: normal !important;
        -ms-flex-direction: row !important;
        flex-direction: row !important;
        -ms-flex-wrap: nowrap !important;
        flex-wrap: nowrap !important;
        overflow-x: auto !important;
        overflow-y: hidden !important;
        -webkit-overflow-scrolling: touch !important;
        scrollbar-width: none !important;
        -ms-overflow-style: none !important;
        white-space: nowrap !important;
    }
    
    body .filter-nav-v7 .filter-row-primary::-webkit-scrollbar,
    body .filter-nav-v7 .filter-row-secondary::-webkit-scrollbar,
    body #filter-nav-v7 .filter-row-primary::-webkit-scrollbar,
    body #filter-nav-v7 .filter-row-secondary::-webkit-scrollbar {
        display: none !important;
        width: 0 !important;
        height: 0 !important;
    }
    
    /* 分类按钮 - 防止压缩 */
    body .filter-nav-v7 .filter-btn,
    body .filter-nav-v7 .filter-expandable,
    body #filter-nav-v7 .filter-btn,
    body #filter-nav-v7 .filter-expandable {
        -ms-flex-negative: 0 !important;
        flex-shrink: 0 !important;
        white-space: nowrap !important;
    }
    
    /* 子分类列表横向滚动 */
    body .filter-nav-v7 .filter-children-list,
    body #filter-nav-v7 .filter-children-list,
    #filter-children-list {
        display: -webkit-box !important;
        display: -ms-flexbox !important;
        display: flex !important;
        -webkit-box-orient: horizontal !important;
        -webkit-box-direction: normal !important;
        -ms-flex-direction: row !important;
        flex-direction: row !important;
        -ms-flex-wrap: nowrap !important;
        flex-wrap: nowrap !important;
        overflow-x: auto !important;
        overflow-y: hidden !important;
        -webkit-overflow-scrolling: touch !important;
        scrollbar-width: none !important;
        -ms-overflow-style: none !important;
        white-space: nowrap !important;
    }
    
    body .filter-nav-v7 .filter-children-list::-webkit-scrollbar,
    body #filter-nav-v7 .filter-children-list::-webkit-scrollbar,
    #filter-children-list::-webkit-scrollbar {
        display: none !important;
    }
    
    /* 子分类按钮 - 防止压缩 */
    body .filter-nav-v7 .filter-child-btn,
    body #filter-nav-v7 .filter-child-btn {
        -ms-flex-negative: 0 !important;
        flex-shrink: 0 !important;
        white-space: nowrap !important;
    }
}