:root {
    /* 暗色主题变量 - 优化的色彩系统 */
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;
    --bg-header: rgba(0, 0, 0, 0.95);
    --bg-card: #1e1e1e;
    --bg-overlay: rgba(0, 0, 0, 0.8);

    /* 文字颜色 - 增强对比度 */
    --text-primary: #ffffff;
    --text-secondary: #e0e0e0;
    --text-tertiary: #b0b0b0;
    --text-muted: #808080;

    /* 主色调 - 龙珠橙色系 */
    --text-accent: #ff6b00;
    --text-accent-hover: #ff8533;
    --text-accent-light: rgba(255, 107, 0, 0.15);
    --text-accent-dark: #e55a00;

    /* 辅助色彩 */
    --color-success: #4caf50;
    --color-warning: #ff9800;
    --color-error: #f44336;
    --color-info: #2196f3;

    /* 边框颜色 - 更细腻的层次 */
    --border-primary: #333333;
    --border-secondary: #404040;
    --border-accent: var(--text-accent);

    /* 字体系统 */
    --font-family-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    --font-family-display: 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;

    /* 字体大小 */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;

    /* 行高 */
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* 字重 */
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* 间距变量 - 更精细的控制 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* 圆角变量 - 更现代的设计 */
    --radius-xs: 2px;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;

    /* 阴影变量 */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.3);

    /* 过渡变量 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-theme: 0.4s cubic-bezier(0.4, 0, 0.2, 1);

    /* Z-index层级 */
    --z-overlay: 1000;
    --z-modal: 1001;
    --z-tooltip: 2000;

    /* 主题切换动画 */
    --theme-transition: all var(--transition-theme);
}

:root[data-theme='light'] {
    /* 亮色主题变量 - 优化的色彩系统 */
    --bg-primary: #fafafa;
    --bg-secondary: #f5f5f5;
    --bg-tertiary: #eeeeee;
    --bg-header: rgba(255, 255, 255, 0.95);
    --bg-card: #ffffff;
    --bg-overlay: rgba(255, 255, 255, 0.9);

    /* 文字颜色 - 增强可读性 */
    --text-primary: #1a1a1a;
    --text-secondary: #424242;
    --text-tertiary: #616161;
    --text-muted: #9e9e9e;

    /* 主色调保持一致 */
    --text-accent: #ff6b00;
    --text-accent-hover: #e55a00;
    --text-accent-light: rgba(255, 107, 0, 0.08);
    --text-accent-dark: #cc4400;

    /* 辅助色彩 */
    --color-success: #388e3c;
    --color-warning: #f57c00;
    --color-error: #d32f2f;
    --color-info: #1976d2;

    /* 边框颜色 */
    --border-primary: #e0e0e0;
    --border-secondary: #f0f0f0;
    --border-accent: var(--text-accent);

    /* 亮色主题阴影 - 更柔和 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
}

:root[data-theme='auto'] {
    /* 自动主题将通过JavaScript动态设置 */
}

/* 主题切换动画 */
.theme-transitioning * {
    transition: background-color var(--transition-theme),
                color var(--transition-theme),
                border-color var(--transition-theme),
                box-shadow var(--transition-theme) !important;
}

/* 排除不需要主题动画的元素 */
.theme-transitioning *:where(img, video, iframe, canvas, svg, path, .card img) {
    transition: none !important;
}

/* 主题切换时的特殊效果 */
.theme-transitioning {
    overflow: hidden;
}

.theme-transitioning::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, transparent 0%, rgba(255, 107, 0, 0.1) 50%, transparent 100%);
    pointer-events: none;
    z-index: 9999;
    opacity: 0;
    animation: themeTransition var(--transition-theme) ease-out;
}

@keyframes themeTransition {
    0% { opacity: 0; transform: scale(0); }
    50% { opacity: 1; transform: scale(1.2); }
    100% { opacity: 0; transform: scale(2); }
}

/* 通用样式类 */
.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

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

.shadow-hover:hover {
    box-shadow: var(--shadow-md);
}

/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    /* 移动端优化 */
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    /* 页面加载状态 */
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
    /* 背景纹理 */
    background-image:
        radial-gradient(circle at 25% 25%, rgba(255, 107, 0, 0.02) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(255, 107, 0, 0.02) 0%, transparent 50%);
}

body.page-loading {
    opacity: 0;
}

body.page-loaded {
    opacity: 1;
}

/* 页面加载时隐藏内容 */
.page-loading .page-header,
.page-loading header,
.page-loading .gallery-section {
    opacity: 0;
    transform: translateY(30px);
}

/* 页面加载完成后的入场动画 */
.animate-in {
    animation: fadeInUp 0.8s ease-out forwards;
}

/* 触摸设备优化 */
.touch-device {
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
}

/* 移动设备特定样式 */
.mobile-device {
    /* 防止横屏时字体缩放 */
    -webkit-text-size-adjust: 100%;
}

/* 移动端滚动条隐藏 */
@media (max-width: 768px) {
    ::-webkit-scrollbar {
        display: none;
    }

    body {
        -ms-overflow-style: none;
        scrollbar-width: none;
    }
}

/* 头部样式 - 增强视觉层次 */
header {
    background: linear-gradient(135deg, var(--bg-header) 0%, rgba(255, 107, 0, 0.02) 100%);
    border-bottom: 1px solid var(--border-primary);
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    animation: slideInFromLeft 0.6s ease-out;
}

nav {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    color: var(--text-accent);
    font-family: var(--font-family-display);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    text-decoration: none;
    transition: all var(--transition-fast);
    animation: bounceIn 1s ease-out 0.3s both;
    position: relative;
    letter-spacing: -0.02em;
}

.logo::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--text-accent), var(--text-accent-hover));
    transition: width var(--transition-normal);
}

.logo:hover {
    transform: scale(1.05);
    animation: float 2s ease-in-out infinite;
    text-shadow: 0 0 20px rgba(255, 107, 0, 0.3);
}

.logo:hover::after {
    width: 100%;
}

.nav-links {
    animation: slideInFromRight 0.8s ease-out 0.2s both;
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
}

.nav-links a:hover {
    color: var(--text-accent);
    background-color: var(--bg-secondary);
}

/* 移动端头部优化 */
@media (max-width: 768px) {
    header {
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .logo {
        font-size: 1.3rem;
    }

    .nav-links {
        gap: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    header {
        padding: var(--spacing-xs);
    }

    .logo {
        font-size: 1.2rem;
    }
}

/* 按钮基础样式 */
.btn {
    border: none;
    cursor: pointer;
    font-size: 1rem;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    font-family: inherit;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.theme-toggle {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    color: var(--text-primary);
    font-size: var(--font-size-xl);
    padding: var(--spacing-sm);
    border: 2px solid var(--border-accent);
    border-radius: var(--radius-full);
    min-width: 48px;
    min-height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.theme-toggle::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--text-accent-light);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.theme-toggle:hover {
    color: var(--text-accent);
    transform: scale(1.05);
    border-color: var(--text-accent);
    box-shadow: var(--shadow-sm);
}

.theme-toggle:hover::before {
    opacity: 1;
}

.theme-toggle:active {
    transform: scale(0.95);
    background-color: var(--text-accent);
    color: white;
}

/* 主题切换动画效果 */
.theme-toggle.switching {
    animation: themeSwitch 0.6s ease-in-out;
}

@keyframes themeSwitch {
    0% { transform: scale(1) rotate(0deg); }
    25% { transform: scale(1.1) rotate(90deg); }
    50% { transform: scale(1.2) rotate(180deg); }
    75% { transform: scale(1.1) rotate(270deg); }
    100% { transform: scale(1) rotate(360deg); }
}

/* 主题选择器下拉菜单 */
.theme-selector {
    position: relative;
    display: inline-block;
}

.theme-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 150px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: var(--z-tooltip);
    margin-top: var(--spacing-xs);
}

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

.theme-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    font-size: 0.9rem;
}

.theme-option:hover {
    background-color: var(--text-accent-light);
    color: var(--text-accent);
}

.theme-option.active {
    background-color: var(--text-accent);
    color: white;
}

.theme-option-icon {
    font-size: 1rem;
    width: 20px;
    text-align: center;
}

.theme-option-text {
    flex: 1;
}

/* 主题切换指示器 */
.theme-indicator {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    z-index: calc(var(--z-tooltip) + 1);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.theme-indicator.active {
    opacity: 1;
    visibility: visible;
}

.theme-indicator-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-primary);
}

.theme-indicator-icon {
    font-size: 1.5rem;
    animation: pulse 1s ease-in-out infinite;
}

.theme-indicator-text {
    font-size: 1rem;
    font-weight: 500;
}

/* 移动端主题切换按钮优化 */
@media (max-width: 768px) {
    .theme-toggle {
        font-size: 1.1rem;
        min-width: 40px;
        min-height: 40px;
        padding: var(--spacing-xs);
    }
}

@media (max-width: 480px) {
    .theme-toggle {
        font-size: 1rem;
        min-width: 36px;
        min-height: 36px;
    }
}

/* 主内容区域 */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

/* 页面头部 - 增强视觉冲击力 */
.page-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    padding: var(--spacing-2xl) var(--spacing-md);
    position: relative;
    animation: slideInFromLeft 0.8s ease-out;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, transparent, var(--text-accent), transparent);
    border-radius: var(--radius-full);
}

.page-header h1 {
    background: linear-gradient(135deg, var(--text-accent) 0%, var(--text-accent-hover) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-lg);
    font-family: var(--font-family-display);
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    letter-spacing: -0.02em;
    animation: fadeInUp 1s ease-out 0.2s both;
    position: relative;
}

.page-header h1::after {
    content: '✨';
    position: absolute;
    top: -10px;
    right: -30px;
    font-size: var(--font-size-lg);
    animation: pulse 2s ease-in-out infinite;
}

.page-description {
    color: var(--text-secondary);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    max-width: 700px;
    margin: 0 auto;
    line-height: var(--line-height-relaxed);
    animation: fadeInUp 1s ease-out 0.4s both;
    position: relative;
    padding: var(--spacing-md);
    background: var(--bg-overlay);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-primary);
}

/* 画廊区域 */
.gallery-section {
    margin-top: var(--spacing-lg);
}

/* 响应式主内容区域 */
@media (min-width: 1400px) {
    main {
        max-width: 1400px;
        padding: var(--spacing-xl);
    }

    .page-header h1 {
        font-size: 3rem;
    }

    .page-description {
        font-size: 1.2rem;
        max-width: 700px;
    }
}

@media (min-width: 992px) and (max-width: 1399px) {
    main {
        padding: var(--spacing-lg);
    }
}

@media (min-width: 768px) and (max-width: 991px) {
    main {
        padding: var(--spacing-md);
    }

    .page-header h1 {
        font-size: 2.2rem;
    }

    .page-description {
        font-size: 1.05rem;
    }
}

@media (min-width: 576px) and (max-width: 767px) {
    main {
        padding: var(--spacing-sm);
    }

    .page-header h1 {
        font-size: 2rem;
        margin-bottom: var(--spacing-sm);
    }

    .page-description {
        font-size: 1rem;
        padding: 0 var(--spacing-xs);
    }
}

@media (max-width: 575px) {
    main {
        padding: var(--spacing-xs);
    }

    .page-header {
        margin-bottom: var(--spacing-lg);
    }

    .page-header h1 {
        font-size: 1.8rem;
        margin-bottom: var(--spacing-xs);
        line-height: 1.2;
    }

    .page-description {
        font-size: 0.95rem;
        padding: 0;
        line-height: 1.5;
    }
}

@media (max-width: 359px) {
    .page-header h1 {
        font-size: 1.6rem;
    }

    .page-description {
        font-size: 0.9rem;
    }
}

/* 图片画廊 */
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    padding: var(--spacing-md);
}

/* 降级支持：如果不支持Grid，使用Flexbox */
@supports not (display: grid) {
    .gallery {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
    }

    .gallery .card {
        width: 280px;
        margin: calc(var(--spacing-lg) / 2);
        flex-shrink: 0;
    }
}

/* 超大屏幕优化 (1920px+) */
@media (min-width: 1920px) {
    .gallery {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
        gap: var(--spacing-xl);
        padding: var(--spacing-lg);
    }
}

/* 大屏幕优化 (1400px-1919px) */
@media (min-width: 1400px) and (max-width: 1919px) {
    .gallery {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: var(--spacing-lg);
    }
}

/* 中等屏幕优化 (1200px-1399px) */
@media (min-width: 1200px) and (max-width: 1399px) {
    .gallery {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: var(--spacing-lg);
    }
}

/* 小屏幕优化 (992px-1199px) */
@media (min-width: 992px) and (max-width: 1199px) {
    .gallery {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: var(--spacing-md);
        padding: var(--spacing-md);
    }
}

/* 平板横屏优化 (768px-991px) */
@media (min-width: 768px) and (max-width: 991px) {
    .gallery {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
        gap: var(--spacing-md);
        padding: var(--spacing-sm);
    }
}

/* 平板竖屏和大手机优化 (576px-767px) */
@media (min-width: 576px) and (max-width: 767px) {
    .gallery {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: var(--spacing-sm);
        padding: var(--spacing-sm);
    }
}

/* 手机横屏优化 (480px-575px) */
@media (min-width: 480px) and (max-width: 575px) {
    .gallery {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
        padding: var(--spacing-xs);
    }
}

/* 小手机优化 (320px-479px) */
@media (max-width: 479px) {
    .gallery {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xs);
        padding: var(--spacing-xs);
    }
}

/* 极小屏幕优化 (最小320px) */
@media (max-width: 359px) {
    .gallery {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
        padding: var(--spacing-xs);
    }
}

/* 图片卡片样式 - 现代化设计 */
.card {
    background: linear-gradient(145deg, var(--bg-card) 0%, rgba(255, 107, 0, 0.02) 100%);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    position: relative;
    cursor: pointer;
    /* 添加硬件加速 */
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
    will-change: transform, box-shadow;
    transition: all var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-md);
    /* 移动端触摸优化 */
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    /* 增强视觉层次 */
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 107, 0, 0.1), rgba(255, 133, 51, 0.05));
    opacity: 0;
    transition: opacity var(--transition-normal);
    z-index: 1;
    pointer-events: none;
}

/* 桌面端悬停效果 */
@media (hover: hover) and (pointer: fine) {
    .card:hover {
        transform: translateY(-8px) scale(1.02);
        box-shadow: var(--shadow-lg);
    }

    .card:hover::before {
        opacity: 1;
    }

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

    .card:hover .card-overlay {
        transform: translateY(0);
    }
}

/* 移动端触摸效果 */
@media (hover: none) and (pointer: coarse) {
    .card:active {
        transform: scale(0.98);
        transition: all 0.1s ease;
    }

    /* 移动端始终显示图片信息 */
    .card-overlay {
        transform: translateY(0);
        background: linear-gradient(transparent, rgba(0, 0, 0, 0.6));
    }
}

/* 通用点击效果 */
.card:active {
    transform: translateY(-4px) scale(1.01);
    transition: all 0.1s ease;
}

.card.loaded {
    animation: bounceIn 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.card.loading {
    animation: pulse 2s ease-in-out infinite;
}

/* 图片渐进式加载效果 */
.card img {
    opacity: 0;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.card img.loaded {
    opacity: 1;
    animation: zoomIn 0.6s ease-out;
}

.card img.error {
    opacity: 0.5;
    filter: grayscale(100%);
}

.card img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    transition: all var(--transition-normal) ease;
    display: block;
}

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

/* 响应式图片高度 */
@media (min-width: 1920px) {
    .card img,
    .image-placeholder {
        height: 320px;
    }
}

@media (min-width: 1400px) and (max-width: 1919px) {
    .card img,
    .image-placeholder {
        height: 300px;
    }
}

@media (min-width: 768px) and (max-width: 991px) {
    .card img,
    .image-placeholder {
        height: 250px;
    }
}

@media (min-width: 576px) and (max-width: 767px) {
    .card img,
    .image-placeholder {
        height: 220px;
    }
}

@media (min-width: 480px) and (max-width: 575px) {
    .card img,
    .image-placeholder {
        height: 200px;
    }
}

@media (max-width: 479px) {
    .card img,
    .image-placeholder {
        height: 180px;
    }
}

@media (max-width: 359px) {
    .card img,
    .image-placeholder {
        height: 250px;
    }
}

/* 图片信息覆盖层 - 增强设计 */
.card-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(
        transparent 0%,
        rgba(0, 0, 0, 0.4) 30%,
        rgba(0, 0, 0, 0.8) 100%
    );
    color: white;
    padding: var(--spacing-lg) var(--spacing-md) var(--spacing-md);
    transform: translateY(100%);
    transition: all var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 2;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.card:hover .card-overlay {
    transform: translateY(0);
}

.card-title {
    font-family: var(--font-family-display);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    margin: 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    letter-spacing: 0.02em;
    position: relative;
}

.card-title::before {
    content: '🐉';
    margin-right: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

/* 卡片装饰元素 */
.card::after {
    content: '';
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    width: 8px;
    height: 8px;
    background: var(--text-accent);
    border-radius: var(--radius-full);
    opacity: 0;
    transform: scale(0);
    transition: all var(--transition-fast);
}

.card:hover::after {
    opacity: 1;
    transform: scale(1);
}

/* 改进的图片占位符 */
.image-placeholder {
    width: 100%;
    height: 280px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
    color: var(--text-secondary);
    font-size: 0.9rem;
    position: relative;
    overflow: hidden;
}

.image-placeholder::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    animation: shimmer 2s infinite;
}

.image-placeholder-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
    opacity: 0.6;
}

.image-placeholder-text {
    font-size: 0.8rem;
    opacity: 0.8;
}

.image-placeholder.error {
    background: linear-gradient(135deg, #ff4444, #cc3333);
    color: white;
}

.image-placeholder.error .image-placeholder-icon {
    opacity: 1;
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes cardFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%) translateY(-100%) rotate(45deg);
    }
    100% {
        transform: translateX(100%) translateY(100%) rotate(45deg);
    }
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
        -webkit-transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
        -webkit-transform: rotate(360deg);
    }
}

@-webkit-keyframes spin {
    0% { -webkit-transform: rotate(0deg); }
    100% { -webkit-transform: rotate(360deg); }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

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

@keyframes spinPulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.7;
    }
}

@keyframes bounceIn {
    0% {
        transform: scale(0.3) translateY(-50px);
        opacity: 0;
    }
    50% {
        transform: scale(1.05) translateY(-10px);
        opacity: 0.8;
    }
    70% {
        transform: scale(0.95) translateY(0);
        opacity: 0.9;
    }
    100% {
        transform: scale(1) translateY(0);
        opacity: 1;
    }
}

@keyframes slideInFromLeft {
    from {
        transform: translateX(-100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideInFromRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes zoomIn {
    from {
        transform: scale(0.8);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.pagination-info {
    text-align: center;
    margin-top: 1rem;
    color: var(--text-primary);
    font-size: 0.9rem;
    opacity: 0.8;
}

.load-more-container {
    text-align: center;
    margin-top: var(--spacing-lg);
    padding: 0 var(--spacing-sm);
}

.load-more-btn {
    background: linear-gradient(135deg, var(--text-accent) 0%, var(--text-accent-hover) 100%);
    color: white;
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--radius-full);
    font-family: var(--font-family-display);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    box-shadow: var(--shadow-lg);
    min-height: 56px;
    min-width: 160px;
    transition: all var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    position: relative;
    overflow: hidden;
    letter-spacing: 0.02em;
}

.load-more-btn:hover:not(:disabled) {
    background-color: var(--text-accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.load-more-btn:active {
    transform: translateY(0) scale(0.98);
}

.load-more-btn.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.load-more-btn.loading::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid white;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.load-more-btn.loading::after {
    content: '加载中...';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 0.9rem;
    margin-top: 15px;
}

/* 移动端加载按钮优化 */
@media (max-width: 768px) {
    .load-more-container {
        margin-top: var(--spacing-md);
        padding: 0 var(--spacing-xs);
    }

    .load-more-btn {
        font-size: 1rem;
        padding: var(--spacing-sm) var(--spacing-md);
        min-width: 140px;
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    .load-more-btn {
        font-size: 0.95rem;
        padding: var(--spacing-xs) var(--spacing-sm);
        min-height: 44px;
    }
}

/* 图片放大遮罩层 */
.overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    z-index: var(--z-overlay);
    cursor: pointer;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    opacity: 0;
    transition: opacity var(--transition-normal) ease;
}

.overlay.active {
    opacity: 1;
}

/* 放大的图片样式 */
.enlarged-image {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.8);
    max-width: 95vw;
    max-height: 95vh;
    object-fit: contain;
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8);
    z-index: var(--z-modal);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: zoom-out;
}

.enlarged-image.active {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
}

/* 图片放大时的关闭按钮 */
.image-close-btn {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    z-index: calc(var(--z-modal) + 1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    opacity: 0;
    transform: scale(0.8);
}

.image-close-btn.active {
    opacity: 1;
    transform: scale(1);
}

.image-close-btn:hover {
    background-color: rgba(255, 107, 0, 0.8);
    transform: scale(1.1);
}

/* 图片信息面板 */
.image-info-panel {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(100%);
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    z-index: calc(var(--z-modal) + 1);
    transition: transform var(--transition-normal) ease;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.image-info-panel.active {
    transform: translateX(-50%) translateY(0);
}

.image-info-title {
    font-size: 1rem;
    font-weight: 500;
    margin: 0;
}

/* 移动端图片预览优化 */
@media (max-width: 768px) {
    .overlay {
        background-color: rgba(0, 0, 0, 0.95);
    }

    .enlarged-image {
        max-width: 95vw;
        max-height: 85vh;
        border-radius: var(--radius-sm);
        cursor: default;
    }

    .image-close-btn {
        top: env(safe-area-inset-top, 10px);
        right: 10px;
        width: 44px;
        height: 44px;
        font-size: 1.2rem;
        background-color: rgba(0, 0, 0, 0.8);
    }

    .image-info-panel {
        bottom: env(safe-area-inset-bottom, 10px);
        left: 10px;
        right: 10px;
        transform: translateY(100%);
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .image-info-panel.active {
        transform: translateY(0);
    }

    .image-info-title {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .enlarged-image {
        max-width: 98vw;
        max-height: 80vh;
    }

    .image-close-btn {
        width: 40px;
        height: 40px;
        font-size: 1.1rem;
        top: env(safe-area-inset-top, 5px);
        right: 5px;
    }

    .image-info-panel {
        bottom: env(safe-area-inset-bottom, 5px);
        left: 5px;
        right: 5px;
    }

    .image-info-title {
        font-size: 0.85rem;
    }
}

/* 横屏模式优化 */
@media (max-width: 768px) and (orientation: landscape) {
    .enlarged-image {
        max-height: 90vh;
    }

    .image-info-panel {
        bottom: 5px;
        padding: var(--spacing-xs);
    }

    .image-close-btn {
        top: 5px;
    }
}

/* 支持安全区域的设备 */
@supports (padding: max(0px)) {
    @media (max-width: 768px) {
        .image-close-btn {
            top: max(env(safe-area-inset-top), 10px);
        }

        .image-info-panel {
            bottom: max(env(safe-area-inset-bottom), 10px);
            padding-left: max(env(safe-area-inset-left), var(--spacing-sm));
            padding-right: max(env(safe-area-inset-right), var(--spacing-sm));
        }
    }
}

/* 性能优化 */
.gallery {
    /* 启用硬件加速 */
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
    /* 优化重绘性能 */
    contain: layout style paint;
}

/* 移动端性能优化 */
@media (max-width: 768px) {
    .card {
        /* 减少移动端的复杂动画 */
        will-change: transform;
    }

    .card::before {
        /* 移动端禁用复杂的渐变覆盖 */
        display: none;
    }

    /* 优化移动端滚动性能 */
    .gallery {
        -webkit-overflow-scrolling: touch;
        overscroll-behavior: contain;
    }
}

/* 减少动画的媒体查询 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .card:hover {
        transform: none;
    }

    .enlarged-image {
        transition: none;
    }
}

/* 高级视觉效果 */
.glass-effect {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* 文字发光效果 */
.glow-text {
    text-shadow: 0 0 10px var(--text-accent), 0 0 20px var(--text-accent), 0 0 30px var(--text-accent);
}

/* 渐变边框效果 */
.gradient-border {
    position: relative;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
}

.gradient-border::before {
    content: '';
    position: absolute;
    inset: 0;
    padding: 2px;
    background: linear-gradient(45deg, var(--text-accent), var(--text-accent-hover), var(--text-accent));
    border-radius: inherit;
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
}

/* 悬停时的磁性效果 */
.magnetic-hover {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.magnetic-hover:hover {
    transform: translate3d(var(--mouse-x, 0), var(--mouse-y, 0), 0);
}

/* 视差滚动效果 */
.parallax-element {
    transform: translateZ(0);
    will-change: transform;
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
    :root {
        --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.5);
        --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.6);
        --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.7);
    }

    .card {
        border: 2px solid var(--text-secondary);
    }

    .logo {
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
    }
}

/* 打印样式优化 */
@media print {
    * {
        background: transparent !important;
        color: black !important;
        box-shadow: none !important;
        text-shadow: none !important;
    }

    .theme-toggle,
    .back-to-top,
    .scroll-indicator,
    .decorative-orb {
        display: none !important;
    }

    .card {
        break-inside: avoid;
        margin-bottom: 1rem;
    }

    .page-header h1 {
        color: black !important;
        -webkit-text-fill-color: black !important;
    }
}

/* 加载指示器 */
.loading-indicator {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
    animation: fadeInUp 0.5s ease-out;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    position: relative;
    margin-bottom: var(--spacing-md);
}

.loading-spinner::before,
.loading-spinner::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    animation: spinPulse 2s ease-in-out infinite;
}

.loading-spinner::before {
    width: 100%;
    height: 100%;
    border: 3px solid var(--text-accent);
    border-top-color: transparent;
    animation: spin 1s linear infinite;
}

.loading-spinner::after {
    width: 70%;
    height: 70%;
    top: 15%;
    left: 15%;
    border: 2px solid var(--text-accent);
    opacity: 0.3;
    animation: spin 1.5s linear infinite reverse;
}

.loading-text {
    font-size: 1rem;
    font-weight: 500;
    opacity: 0.9;
    animation: pulse 2s ease-in-out infinite;
}

/* 骨架屏效果 */
.skeleton-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
    animation: fadeInUp 0.6s ease-out;
}

.skeleton-image {
    width: 100%;
    height: 280px;
    background: linear-gradient(90deg,
        var(--bg-secondary) 25%,
        var(--bg-tertiary) 50%,
        var(--bg-secondary) 75%);
    background-size: 200% 100%;
    animation: shimmerWave 2s infinite;
    position: relative;
}

.skeleton-image::before {
    content: '🖼️';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2rem;
    opacity: 0.3;
    animation: pulse 2s ease-in-out infinite;
}

.skeleton-content {
    padding: var(--spacing-sm);
}

.skeleton-title {
    height: 16px;
    background: linear-gradient(90deg,
        var(--bg-secondary) 25%,
        var(--bg-tertiary) 50%,
        var(--bg-secondary) 75%);
    background-size: 200% 100%;
    animation: shimmerWave 2s infinite;
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-xs);
}

.skeleton-text {
    height: 12px;
    background: linear-gradient(90deg,
        var(--bg-secondary) 25%,
        var(--bg-tertiary) 50%,
        var(--bg-secondary) 75%);
    background-size: 200% 100%;
    animation: shimmerWave 2s infinite;
    border-radius: var(--radius-sm);
    width: 70%;
}

/* 页面加载骨架屏 */
.page-skeleton {
    animation: fadeIn 0.3s ease-out;
}

.page-skeleton .gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    padding: var(--spacing-md);
}

/* 响应式骨架屏 */
@media (max-width: 768px) {
    .skeleton-image {
        height: 220px;
    }

    .page-skeleton .gallery {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .skeleton-image {
        height: 180px;
    }

    .page-skeleton .gallery {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-xs);
    }
}

/* 消息提示基础样式 */
.message {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-tooltip);
    font-size: 0.9rem;
    animation: slideIn var(--transition-normal);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    max-width: 300px;
}

/* 错误提示样式 */
.error-message {
    @extend .message;
    background-color: #ff4444;
    color: white;
}

.error-icon {
    font-size: 1.2rem;
}

/* 成功提示样式 */
.success-message {
    @extend .message;
    background-color: #4caf50;
    color: white;
}

.success-icon {
    font-size: 1.2rem;
}

/* 由于CSS不支持@extend，我们需要重复样式 */
.error-message,
.success-message {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-tooltip);
    font-size: 0.9rem;
    animation: slideIn var(--transition-normal);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    max-width: 300px;
}

.error-message {
    background-color: #ff4444;
    color: white;
}

.success-message {
    background-color: #4caf50;
    color: white;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* 响应式消息提示 */
@media (max-width: 768px) {
    .error-message,
    .success-message {
        top: 10px;
        right: 10px;
        left: 10px;
        max-width: none;
        font-size: 0.8rem;
    }
}

/* 微交互动画 */
.card {
    /* 添加卡片入场动画 */
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* 按钮点击波纹效果 */
.btn, .load-more-btn, .theme-toggle {
    position: relative;
    overflow: hidden;
}

.btn::after, .load-more-btn::after, .theme-toggle::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active::after, .load-more-btn:active::after, .theme-toggle:active::after {
    width: 300px;
    height: 300px;
}

/* 滚动指示器 */
.scroll-indicator {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--text-accent), var(--text-accent-hover));
    transform-origin: left;
    transform: scaleX(0);
    z-index: 9999;
    transition: transform 0.1s ease-out;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--text-accent);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-normal);
    z-index: 100;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--text-accent-hover);
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(255, 107, 0, 0.3);
}

.back-to-top:active {
    transform: translateY(-2px);
}

/* 装饰性元素 */
.decorative-orb {
    position: fixed;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 107, 0, 0.1) 0%, transparent 70%);
    pointer-events: none;
    z-index: -1;
    animation: float 6s ease-in-out infinite;
}

.decorative-orb:nth-child(1) {
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.decorative-orb:nth-child(2) {
    top: 60%;
    right: 10%;
    animation-delay: 2s;
}

.decorative-orb:nth-child(3) {
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

/* 页面分隔线 */
.section-divider {
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-primary), transparent);
    margin: var(--spacing-3xl) 0;
    position: relative;
}

.section-divider::before {
    content: '⭐';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--bg-primary);
    padding: 0 var(--spacing-md);
    color: var(--text-accent);
    font-size: var(--font-size-lg);
}

/* 页脚样式 - 增强设计 */
.site-footer {
    background: linear-gradient(135deg, var(--bg-header) 0%, rgba(255, 107, 0, 0.02) 100%);
    border-top: 2px solid var(--border-accent);
    margin-top: var(--spacing-3xl);
    padding: var(--spacing-2xl) 0;
    animation: slideInFromLeft 1s ease-out 0.8s both;
    position: relative;
    overflow: hidden;
}

.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--text-accent), var(--text-accent-hover), var(--text-accent));
    background-size: 200% 100%;
    animation: shimmerWave 3s infinite;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    text-align: center;
    position: relative;
}

.footer-text {
    color: var(--text-secondary);
    font-family: var(--font-family-display);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    margin: 0;
    line-height: var(--line-height-relaxed);
    position: relative;
}

.footer-text::before {
    content: '🐲';
    margin-right: var(--spacing-sm);
    font-size: var(--font-size-lg);
}

.beian-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    display: inline-block;
    position: relative;
}

.beian-link:hover {
    color: var(--text-accent);
    background: var(--text-accent-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.beian-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--text-accent);
    transition: all var(--transition-fast);
    transform: translateX(-50%);
}

.beian-link:hover::after {
    width: 80%;
}

/* 页脚响应式设计 */
@media (min-width: 1400px) {
    .site-footer {
        margin-top: calc(var(--spacing-xl) * 2);
        padding: var(--spacing-lg) 0;
    }

    .footer-text {
        font-size: 1rem;
    }
}

@media (min-width: 768px) and (max-width: 1399px) {
    .site-footer {
        margin-top: var(--spacing-xl);
        padding: var(--spacing-md) 0;
    }
}

@media (min-width: 576px) and (max-width: 767px) {
    .site-footer {
        margin-top: var(--spacing-lg);
        padding: var(--spacing-sm) 0;
    }

    .footer-content {
        padding: 0 var(--spacing-sm);
    }

    .footer-text {
        font-size: 0.85rem;
    }
}

@media (max-width: 575px) {
    .site-footer {
        margin-top: var(--spacing-md);
        padding: var(--spacing-xs) 0;
        /* 为移动端添加安全区域支持 */
        padding-bottom: max(var(--spacing-xs), env(safe-area-inset-bottom));
    }

    .footer-content {
        padding: 0 var(--spacing-xs);
    }

    .footer-text {
        font-size: 0.8rem;
        line-height: 1.4;
    }

    .beian-link {
        display: inline-block;
        padding: var(--spacing-xs);
        margin: calc(var(--spacing-xs) * -1);
        border-radius: var(--radius-sm);
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
}