/* TOPREEL GLOBAL 官网样式 */

/* ===== 基础重置和变量 ===== */
:root {
    /* 现代美感配色方案 */
    --primary-color: #6366f1;        /* 现代紫色 - 科技感 */
    --primary-dark: #4f46e5;         /* 深紫色 */
    --primary-light: #a5b4fc;        /* 浅紫色 */
    --secondary-color: #f59e0b;       /* 温暖橙色 - 创意感 */
    --secondary-light: #fbbf24;      /* 浅橙色 */
    --accent-color: #10b981;         /* 现代绿色 - 成功感 */
    --accent-light: #34d399;         /* 浅绿色 */
    
    /* 中性色调 */
    --text-dark: #1f2937;            /* 深灰蓝 */
    --text-medium: #6b7280;          /* 中灰 */
    --text-light: #9ca3af;           /* 浅灰 */
    --bg-white: #ffffff;             /* 纯白 */
    --bg-light: #f9fafb;             /* 极浅灰 */
    --bg-card: #ffffff;              /* 卡片背景 */
    --bg-dark: #111827;              /* 深色背景 */
    
    /* 渐变色 */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-secondary: linear-gradient(135deg, #f59e0b 0%, #f97316 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --gradient-hero: linear-gradient(135deg, rgba(99, 102, 241, 0.9) 0%, rgba(139, 92, 246, 0.8) 100%);
    
    /* 阴影色调 */
    --shadow-color: rgba(99, 102, 241, 0.1);
    --shadow-color-dark: rgba(99, 102, 241, 0.2);
    
    /* 字体变量 */
    --font-primary: 'Roboto', 'Microsoft YaHei', sans-serif;
    --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;
    
    /* 间距变量 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    
    /* 阴影变量 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* 边框圆角 */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    
    /* 过渡动画 */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
    
    /* 容器最大宽度 */
    --container-max-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

/* 容器 */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* 通用按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 500;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-normal);
    white-space: nowrap;
    min-height: 44px; /* 触摸友好 */
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--bg-white);
    border-color: var(--primary-color);
    box-shadow: 0 4px 14px var(--shadow-color);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #7c3aed 100%);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px var(--shadow-color-dark);
}

.btn-secondary {
    background: var(--gradient-secondary);
    color: var(--bg-white);
    border-color: var(--secondary-color);
    box-shadow: 0 4px 14px rgba(245, 158, 11, 0.2);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #ea580c 0%, var(--secondary-color) 100%);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(245, 158, 11, 0.3);
}

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

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--bg-white);
    transform: translateY(-2px);
}

/* 章节标题样式 */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-4xl);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 6px;
    box-shadow: 0 2px 8px var(--shadow-color);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-medium);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== 导航栏 ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(20px);
    border-bottom: 2px solid rgba(99, 102, 241, 0.2);
    transition: all var(--transition-normal);
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.15);
    color: #1f2937 !important;
}

.navbar {
    padding: var(--spacing-md) 0;
}

.nav-container {
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.nav-logo {
    display: flex !important;
    align-items: center !important;
    gap: var(--spacing-sm);
    text-decoration: none;
}

.logo-img {
    height: 40px;
    width: auto;
}

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

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 900;
    color: #000000 !important;
    text-shadow: 
        0 0 2px rgba(255, 255, 255, 0.8),
        0 2px 6px rgba(0, 0, 0, 0.6),
        1px 1px 0px rgba(255, 255, 255, 0.5),
        -1px -1px 0px rgba(255, 255, 255, 0.5);
    letter-spacing: 0.8px;
}

.nav-menu {
    display: flex !important;
    list-style: none;
    gap: var(--spacing-xl);
    margin: 0;
    visibility: visible !important;
    opacity: 1 !important;
    transform: translateY(0) !important;
    position: static !important;
    background: transparent;
    width: auto;
    height: auto;
    flex-direction: row !important;
    padding: 0;
    box-shadow: none;
    z-index: auto;
    top: auto !important;
    left: auto !important;
}

.nav-item {
    position: relative;
}

.nav-link {
    color: #111827 !important;
    text-decoration: none;
    font-weight: 700;
    padding: var(--spacing-sm) 0;
    transition: color var(--transition-normal);
    position: relative;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.nav-link:hover {
    color: var(--primary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width var(--transition-normal);
}

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

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

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--bg-white);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    list-style: none;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
}

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

.dropdown-menu li {
    margin: 0;
}

.dropdown-menu a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-dark);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

.dropdown-menu a:hover {
    background: var(--bg-light);
    color: var(--primary-color);
}

/* 语言切换 */
.language-switcher {
    display: flex;
    gap: var(--spacing-xs);
    background: rgba(99, 102, 241, 0.15);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xs);
    border: 1px solid rgba(99, 102, 241, 0.3);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.1);
}

.lang-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    border: none;
    background: transparent !important;
    color: var(--primary-color) !important;
    font-size: var(--font-size-sm);
    font-weight: 700;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.lang-btn.active,
.lang-btn:hover {
    background: var(--primary-color) !important;
    color: var(--bg-white) !important;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

/* 汉堡菜单 */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.hamburger .bar {
    width: 25px;
    height: 3px;
    background: var(--text-dark) !important;
    margin: 3px 0;
    transition: var(--transition-normal);
    border-radius: 2px;
}

/* 汉堡菜单动画 */
.hamburger.active .bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active .bar:nth-child(2) {
    opacity: 0;
}

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

/* ===== Hero 区域 ===== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    background: linear-gradient(135deg, 
        var(--primary-color) 0%, 
        var(--accent-color) 50%, 
        var(--secondary-color) 100%);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
}

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

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-hero);
    z-index: -1;
}

.hero-content {
    text-align: center;
    color: var(--bg-white);
    z-index: 1;
    max-width: 800px;
    padding: 0 var(--spacing-md);
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-2xl);
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 0.4s both;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border: 2px solid var(--bg-white);
    border-top: none;
    border-left: none;
    transform: rotate(45deg);
}

/* ===== 关于我们 ===== */
.about {
    padding: var(--spacing-4xl) 0;
    background: var(--bg-white);
}

.about-content {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-4xl);
}

.about-text {
    max-width: 800px;
    text-align: center;
}

.about-text h3 {
    font-size: var(--font-size-3xl);
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
    font-weight: 700;
}

.about-text p {
    font-size: var(--font-size-lg);
    line-height: 1.8;
    color: var(--text-medium);
    margin-bottom: var(--spacing-xl);
}

.about-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.feature-item {
    text-align: center;
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    background: var(--bg-light);
    transition: transform var(--transition-normal);
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
}

.feature-item h4 {
    font-size: var(--font-size-lg);
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.feature-item p {
    font-size: var(--font-size-sm);
    color: var(--text-medium);
    margin: 0;
}



/* 数据统计 */
.stats-section {
    background: var(--gradient-primary);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-3xl);
    color: var(--bg-white);
    box-shadow: 0 20px 40px var(--shadow-color);
    position: relative;
    overflow: hidden;
}

.stats-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    pointer-events: none;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-xl);
}

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

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--secondary-color);
}

.stat-label {
    font-size: var(--font-size-base);
    opacity: 0.9;
}

.stat-unit {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--secondary-color);
}

/* ===== 核心业务 ===== */
.services {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(135deg, var(--bg-light) 0%, rgba(99, 102, 241, 0.02) 100%);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.service-card {
    background: var(--bg-card);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-2xl);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(99, 102, 241, 0.1);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
}

.service-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.15);
    border-color: var(--primary-light);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    box-shadow: 0 8px 20px var(--shadow-color);
}

.service-icon img {
    width: 40px;
    height: 40px;
    filter: brightness(0) invert(1);
}

.service-card h3 {
    font-size: var(--font-size-2xl);
    color: #111827;
    margin-bottom: var(--spacing-md);
    font-weight: 700;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.service-card p {
    font-size: var(--font-size-base);
    color: #374151;
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
    font-weight: 500;
}

.service-features {
    list-style: none;
    margin-bottom: var(--spacing-xl);
}

.service-features li {
    padding: var(--spacing-sm) 0;
    color: #1f2937;
    position: relative;
    padding-left: var(--spacing-lg);
    font-weight: 500;
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: var(--spacing-sm);
    color: var(--accent-color);
    font-weight: bold;
    font-size: 1.1em;
}

.service-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: color var(--transition-normal);
    text-shadow: 0 1px 2px rgba(99, 102, 241, 0.1);
}

.service-link:hover {
    color: var(--primary-dark);
    text-shadow: 0 2px 4px rgba(99, 102, 241, 0.2);
}

.service-link::after {
    content: '→';
    transition: transform var(--transition-normal);
}

.service-link:hover::after {
    transform: translateX(5px);
}

/* ===== 作品展示 ===== */
.portfolio {
    padding: var(--spacing-4xl) 0 var(--spacing-5xl) 0;
    background: var(--bg-white);
}

.portfolio-filters {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-3xl);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 2px solid var(--primary-color);
    background: transparent;
    color: var(--primary-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    font-weight: 500;
    transition: all var(--transition-normal);
}

.filter-btn.active,
.filter-btn:hover {
    background: var(--primary-color);
    color: var(--bg-white);
}

/* 竖屏作品展示网格 */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
    overflow: hidden;
}

/* 默认只显示两排作品 */
.portfolio-grid.collapsed {
    max-height: 720px; /* 两排作品的精确高度 */
    transition: max-height 0.5s ease-out;
}

/* 使用更精确的方式：只显示前8个作品项 */
.portfolio-grid.collapsed .portfolio-item:nth-child(n+9) {
    display: none;
}

.portfolio-grid.expanded {
    max-height: none; /* 移除高度限制，让内容完全展开 */
    transition: max-height 0.5s ease-out;
    padding-bottom: 100px; /* 增加底部内边距，确保最后一排完全可见 */
}

/* 渐变遮罩效果，在折叠状态下显示 */
.portfolio-grid.collapsed::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(transparent, var(--bg-white));
    pointer-events: none;
    z-index: 1;
}

.portfolio-grid.expanded::after {
    display: none;
}

.portfolio-item {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    aspect-ratio: 9/16; /* 竖屏比例 */
    height: 320px; /* 固定高度作为备用 */
    background: var(--bg-white);
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
}

/* 强制确保作品项及其子元素始终可见 */
.portfolio-item,
.portfolio-item *,
.portfolio-item img,
.portfolio-item .portfolio-image,
.portfolio-item .portfolio-status,
.portfolio-item .portfolio-info-card {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
}

.portfolio-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.portfolio-image {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

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

.portfolio-item:hover .portfolio-image img {
    transform: scale(1.1);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.95), rgba(139, 92, 246, 0.85));
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: all var(--transition-normal);
    color: var(--bg-white);
    text-align: center;
    padding: var(--spacing-xl);
    backdrop-filter: blur(10px);
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-info h4 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-md);
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.portfolio-info p {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
    font-weight: 500;
}

.portfolio-stats {
    font-size: var(--font-size-base);
    opacity: 0.9;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.2);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(5px);
}

/* 作品状态标签 */
.portfolio-status {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: white;
    z-index: 2;
}

.status-completed {
    background: #10B981;
}

.status-ongoing {
    background: #F59E0B;
}

.status-upcoming {
    background: #6366F1;
}

/* 作品信息区域 */
.portfolio-info-card {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    padding: var(--spacing-xl) var(--spacing-md) var(--spacing-md);
    color: white;
    transform: translateY(0); /* 默认显示 */
    opacity: 1; /* 默认可见 */
    transition: all var(--transition-normal);
}

.portfolio-item:hover .portfolio-info-card {
    transform: translateY(-5px); /* 悬浮时稍微上移 */
    opacity: 1;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.9)); /* 悬浮时背景更深 */
}

.portfolio-info-card h4 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin: 0 0 var(--spacing-xs) 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.portfolio-info-card p {
    font-size: var(--font-size-sm);
    margin: 0 0 var(--spacing-sm) 0;
    opacity: 0.9;
    line-height: 1.4;
}

.portfolio-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-xs);
    opacity: 0.8;
}

.portfolio-views {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.portfolio-episodes {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}



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

/* ===== APP下载 ===== */
.app-download {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(135deg, var(--bg-light), var(--bg-white));
}

.app-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
    margin-bottom: var(--spacing-4xl);
}

.app-info .section-title {
    text-align: left;
    margin-bottom: var(--spacing-lg);
}

.app-info .section-title::after {
    left: 0;
    transform: none;
}

.app-info .section-subtitle {
    text-align: left;
    margin-bottom: var(--spacing-2xl);
}

.app-features {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.app-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.app-feature:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(10px);
}

.app-feature .feature-icon {
    font-size: var(--font-size-3xl);
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    flex-shrink: 0;
    box-shadow: 0 6px 15px var(--shadow-color);
}

.feature-content h4 {
    font-size: var(--font-size-lg);
    color: var(--text-dark);
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.feature-content p {
    font-size: var(--font-size-base);
    color: var(--text-medium);
    margin: 0;
}

.app-download-buttons {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--text-dark);
    color: var(--bg-white);
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    min-width: 160px;
}

.download-btn:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.download-btn img {
    width: 24px;
    height: 24px;
}

.download-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.download-label {
    font-size: var(--font-size-xs);
    opacity: 0.8;
}

.download-store {
    font-size: var(--font-size-base);
    font-weight: 600;
}



.app-mockup {
    text-align: center;
    position: relative;
}

.app-showcase {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-2xl);
    position: relative;
}

/* 手机框架样式 */
.phone-frame {
    width: 280px;
    height: 560px;
    background: linear-gradient(145deg, #f0f0f3, #cacaca);
    border-radius: 35px;
    padding: 8px;
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.15),
        inset 0 2px 4px rgba(255, 255, 255, 0.3);
    position: relative;
    transition: all var(--transition-normal);
}

.phone-frame:hover {
    transform: translateY(-10px) rotateY(5deg);
    box-shadow: 
        0 30px 60px rgba(0, 0, 0, 0.2),
        inset 0 2px 4px rgba(255, 255, 255, 0.3);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 28px;
    overflow: hidden;
    position: relative;
}

.screen-content {
    padding: var(--spacing-lg);
    height: 100%;
    display: flex;
    flex-direction: column;
    color: white;
}

/* 状态栏 */
.status-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.status-icons {
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
}

.signal, .battery {
    opacity: 0.9;
}

/* APP界面 */
.app-interface {
    flex: 0 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    text-align: center;
    padding-top: var(--spacing-lg);
}

.app-logo-circle {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
    animation: float 3s ease-in-out infinite;
}



.app-name {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin: 0 0 var(--spacing-xs) 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.app-tagline {
    font-size: var(--font-size-sm);
    opacity: 0.9;
    margin: 0 0 var(--spacing-lg) 0;
}

.app-buttons {
    display: flex;
    gap: var(--spacing-lg);
}

.app-btn {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.app-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.btn-icon {
    font-size: var(--font-size-base);
}

/* 开发状态覆盖层 - 整合在手机屏幕内 */
.development-overlay {
    flex: 1;
    display: flex;
    align-items: flex-end;
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.dev-status-container {
    width: 100%;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(15px);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    text-align: center;
}

.status-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.rocket-icon {
    font-size: var(--font-size-lg);
    animation: rocket-bounce 2s ease-in-out infinite;
}

.status-text {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.dev-description {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.9);
    margin: 0 0 var(--spacing-lg) 0;
    line-height: 1.4;
}

.progress-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.progress-bar-inline {
    flex: 1;
    height: 6px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill-inline {
    width: 85%;
    height: 100%;
    background: linear-gradient(90deg, var(--accent-color), var(--secondary-color));
    border-radius: var(--radius-full);
    animation: progress-glow 2s ease-in-out infinite alternate;
}

.progress-percentage {
    font-size: var(--font-size-sm);
    color: white;
    font-weight: 600;
    min-width: 35px;
}

.launch-date-inline {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.date-label {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
}

.date-value {
    font-size: var(--font-size-base);
    color: var(--accent-color);
    font-weight: 700;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* 动画效果 */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

@keyframes rocket-bounce {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-5px) rotate(5deg); }
}

@keyframes progress-glow {
    0% { box-shadow: 0 0 5px rgba(99, 102, 241, 0.3); }
    100% { box-shadow: 0 0 20px rgba(99, 102, 241, 0.6); }
}



/* ===== 分销合作 ===== */
.partnership {
    padding: var(--spacing-4xl) 0;
    background: var(--bg-light);
}

.partnership-content > * {
    margin-bottom: var(--spacing-4xl);
}

/* 分销优势 */
.advantage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.advantage-item {
    background: var(--bg-white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.advantage-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.advantage-icon {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-lg);
}

.advantage-item h4 {
    font-size: var(--font-size-xl);
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.advantage-item p {
    font-size: var(--font-size-base);
    color: var(--text-medium);
}

/* 代理商类型 */
.reseller-types h3 {
    font-size: var(--font-size-2xl);
    color: var(--text-dark);
    margin-bottom: var(--spacing-xl);
    text-align: center;
    font-weight: 600;
}

.types-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.type-card {
    background: var(--bg-white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.type-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-success);
}

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

.type-icon {
    font-size: var(--font-size-3xl);
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.type-card h4 {
    font-size: var(--font-size-xl);
    color: var(--text-dark);
    margin-bottom: var(--spacing-lg);
    text-align: center;
    font-weight: 600;
}

.type-features {
    list-style: none;
    margin-bottom: var(--spacing-lg);
}

.type-features li {
    padding: var(--spacing-sm) 0;
    color: var(--text-medium);
    position: relative;
    padding-left: var(--spacing-lg);
}

.type-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

.type-commission {
    text-align: center;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--accent-color);
    background: rgba(76, 175, 80, 0.1);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
}



/* ===== 新闻动态 ===== */
.news {
    padding: var(--spacing-4xl) 0;
    background: var(--bg-white);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

.news-item {
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.news-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.news-item.featured {
    grid-column: span 2;
}

.news-image {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
}

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

.news-item:hover .news-image img {
    transform: scale(1.05);
}

.news-category {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    background: var(--primary-color);
    color: var(--bg-white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.news-content {
    padding: var(--spacing-xl);
}

.news-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--text-light);
}

.news-title {
    font-size: var(--font-size-lg);
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
    line-height: 1.4;
}

.news-excerpt {
    font-size: var(--font-size-base);
    color: var(--text-medium);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.news-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: color var(--transition-normal);
}

.news-link:hover {
    color: var(--secondary-color);
}

.news-link::after {
    content: '→';
    transition: transform var(--transition-normal);
}

.news-link:hover::after {
    transform: translateX(5px);
}

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



/* ===== 联系我们 ===== */
.contact {
    padding: var(--spacing-4xl) 0;
    background: var(--bg-white);
}

.contact-content {
    margin-bottom: var(--spacing-3xl);
}

/* 联系信息卡片网格 */
.contact-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

.contact-card {
    background: var(--bg-white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-2xl);
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.1);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(99, 102, 241, 0.15);
}

.contact-card-icon {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-lg);
    display: inline-block;
    padding: var(--spacing-lg);
    background: var(--gradient-primary);
    border-radius: 50%;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.3);
}

.contact-card h4 {
    font-size: var(--font-size-lg);
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.contact-card p {
    font-size: var(--font-size-base);
    color: var(--text-medium);
    margin: 0;
    line-height: 1.6;
}

/* 联系方式说明 */
.contact-description {
    background: var(--gradient-primary);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-3xl);
    color: white;
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.contact-desc-content h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-lg);
    font-weight: 700;
}

.contact-desc-content p {
    font-size: var(--font-size-lg);
    line-height: 1.8;
    margin-bottom: var(--spacing-2xl);
    opacity: 0.9;
}

.contact-features {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2xl);
    flex-wrap: wrap;
}

.contact-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-base);
    font-weight: 500;
}

.feature-icon {
    font-size: var(--font-size-lg);
}





.contact-map {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.map-container {
    width: 100%;
    height: 400px;
}

.map-container iframe {
    border-radius: var(--radius-xl);
}

/* ===== 页脚 ===== */
.footer {
    background: var(--bg-dark);
    color: var(--bg-white);
    padding: var(--spacing-4xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-lg);
    font-weight: 600;
    color: var(--secondary-color);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.footer-logo-img {
    height: 40px;
    width: auto;
}

.footer-logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--secondary-color);
}

.footer-description {
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-lg);
}



.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color var(--transition-normal);
}

.footer-links a:hover {
    color: var(--secondary-color);
}





.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.footer-copyright {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.6);
}

.footer-legal {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-legal a {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: color var(--transition-normal);
}

.footer-legal a:hover {
    color: var(--secondary-color);
}

/* ===== 下载弹窗 ===== */
.download-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    z-index: 10000;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s ease-out;
}

.download-modal-content {
    background: var(--bg-white);
    border-radius: var(--radius-2xl);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 400px;
    width: 90%;
    max-height: 90vh;
    overflow: hidden;
    animation: slideIn 0.3s ease-out;
}

.download-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xl);
    border-bottom: 1px solid rgba(99, 102, 241, 0.1);
    background: var(--gradient-primary);
    color: var(--bg-white);
}

.download-modal-header h3 {
    margin: 0;
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.download-modal-close {
    background: none;
    border: none;
    color: var(--bg-white);
    font-size: var(--font-size-2xl);
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.download-modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.download-modal-body {
    padding: var(--spacing-xl);
    text-align: center;
}

.download-modal-body p {
    margin-bottom: var(--spacing-md);
    color: var(--text-medium);
    font-size: var(--font-size-base);
    line-height: 1.6;
}

.download-modal-body p:last-child {
    margin-bottom: 0;
    color: var(--primary-color);
    font-weight: 600;
}

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

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-30px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* ===== 返回顶部按钮 ===== */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--bg-white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    opacity: 0;
    visibility: hidden;
    z-index: 1000;
}

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

.back-to-top:hover {
    background: var(--secondary-color);
    color: var(--text-dark);
    transform: translateY(-2px);
}

/* ===== 加载动画 ===== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-white);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity var(--transition-slow);
}

.loading-overlay.hidden {
    opacity: 0;
    visibility: hidden;
}

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

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--bg-light);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-lg);
}

.loading-spinner p {
    font-size: var(--font-size-base);
    color: var(--text-medium);
}

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) translateX(-50%);
    }
    40% {
        transform: translateY(-10px) translateX(-50%);
    }
    60% {
        transform: translateY(-5px) translateX(-50%);
    }
}

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



/* ===== 响应式设计 ===== */

/* 平板端 */
@media (max-width: 1199px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    

    
    .app-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .news-item.featured {
        grid-column: span 1;
    }
}

/* 桌面端强制重置导航菜单位置 */
@media (min-width: 1200px) {
    .nav-menu {
        transform: none !important;
        position: static !important;
        top: auto !important;
        left: auto !important;
        width: auto !important;
        flex-direction: row !important;
        padding: 0 !important;
        box-shadow: none !important;
        z-index: auto !important;
    }
}

/* 移动端 - 侧滑菜单设计 */
@media (max-width: 1199px) {
    .nav-menu {
        position: fixed !important;
        top: 0 !important;
        right: -100% !important;
        width: 280px !important;
        height: 100vh !important;
        background: linear-gradient(135deg, var(--bg-white) 0%, #f8fafc 100%) !important;
        flex-direction: column !important;
        padding: var(--spacing-4xl) var(--spacing-xl) var(--spacing-xl) !important;
        box-shadow: -5px 0 25px rgba(0, 0, 0, 0.15) !important;
        transform: translateX(0) !important;
        transition: right 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94) !important;
        z-index: 999 !important;
        gap: 0 !important;
        display: flex !important;
        overflow-y: auto !important;
        backdrop-filter: blur(20px) !important;
    }
    
    .nav-menu.active {
        right: 0 !important;
    }
    
    .hamburger {
        display: flex;
        z-index: 1001;
        position: relative;
    }
    
    /* 移动端菜单遮罩 */
    .nav-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 998;
        backdrop-filter: blur(2px);
    }
    
    .nav-overlay.active {
        opacity: 1;
        visibility: visible;
    }
    
    .nav-item {
        margin-bottom: var(--spacing-xs);
        width: 100%;
    }
    
    .nav-link {
        font-size: var(--font-size-lg) !important;
        font-weight: 600 !important;
        padding: var(--spacing-lg) var(--spacing-md) !important;
        display: flex !important;
        align-items: center !important;
        text-align: left !important;
        border-radius: var(--radius-lg) !important;
        width: 100% !important;
        color: var(--text-dark) !important;
        background: transparent !important;
        transition: all 0.3s ease !important;
        border: none !important;
        position: relative !important;
        overflow: hidden !important;
    }
    
    .nav-link:hover,
    .nav-link:active {
        background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%) !important;
        color: white !important;
        transform: translateX(5px) !important;
        box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3) !important;
    }
    
    .nav-link::before {
        content: '';
        position: absolute;
        left: 0;
        top: 0;
        height: 100%;
        width: 4px;
        background: var(--primary-color);
        transform: scaleY(0);
        transition: transform 0.3s ease;
        border-radius: 0 4px 4px 0;
    }
    
    .nav-link:hover::before {
        transform: scaleY(1);
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: var(--bg-light);
        margin-top: var(--spacing-md);
    }
    
    .language-switcher {
        margin-top: var(--spacing-lg);
        justify-content: center;
    }
    
    .logo-text {
        font-size: var(--font-size-lg);
    }
    
    .nav-container {
        padding: 0 var(--spacing-sm);
    }
}

/* 移动端 */
@media (max-width: 767px) {
    :root {
        --font-size-5xl: 2rem;
        --font-size-4xl: 1.75rem;
        --font-size-3xl: 1.5rem;
        --font-size-2xl: 1.25rem;
        --spacing-4xl: 3rem;
        --spacing-3xl: 2rem;
        --spacing-2xl: 1.5rem;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    /* 移动端特有样式 */
    
    /* Hero区域移动端 */
    .hero {
        height: 70vh;
        min-height: 500px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 250px;
    }
    
    /* 统计数据移动端 */
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
    
    /* 服务卡片移动端 */
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    /* 作品展示移动端 */
    .portfolio-filters {
        gap: var(--spacing-sm);
    }
    
    .filter-btn {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
    
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
        max-width: none;
    }
    
    .portfolio-item {
        aspect-ratio: 9/16;
    }
    
    .portfolio-info-card {
        padding: var(--spacing-lg) var(--spacing-sm) var(--spacing-sm);
    }
    
    .portfolio-info-card h4 {
        font-size: var(--font-size-base);
    }
    
    .portfolio-info-card p {
        font-size: var(--font-size-xs);
    }
    
    /* APP下载移动端 */
    .app-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        text-align: center;
    }
    
    .app-download-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .download-btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
    
    /* 手机框架移动端 */
    .phone-frame {
        width: 240px;
        height: 480px;
        transform: scale(0.9);
    }
    
    .phone-frame:hover {
        transform: scale(0.9) translateY(-5px);
    }
    
    .app-logo-circle {
        width: 50px;
        height: 50px;
    }
    
    .app-name {
        font-size: var(--font-size-lg);
    }
    
    .app-btn {
        width: 40px;
        height: 40px;
    }
    
    .dev-status-container {
        padding: var(--spacing-md);
    }
    
    .app-showcase {
        gap: var(--spacing-lg);
    }
    
    /* 分销合作移动端 */
    .advantage-grid {
        grid-template-columns: 1fr;
    }
    
    .types-grid {
        grid-template-columns: 1fr;
    }
    
    .process-steps {
        flex-direction: column;
    }
    
    .step-arrow {
        transform: rotate(90deg);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    /* 新闻网格移动端 */
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    /* 联系页面移动端 */
    .contact-cards {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .contact-card {
        padding: var(--spacing-xl);
    }
    
    .contact-card-icon {
        width: 60px;
        height: 60px;
        font-size: var(--font-size-2xl);
    }
    
    .contact-description {
        padding: var(--spacing-2xl);
    }
    
    .contact-features {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    /* 页脚移动端 */
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    /* 返回顶部按钮移动端 */
    .back-to-top {
        bottom: var(--spacing-lg);
        right: var(--spacing-lg);
        width: 45px;
        height: 45px;
    }
}

/* 超小屏幕 */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .section-title {
        font-size: var(--font-size-3xl);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .logo-text {
        font-size: var(--font-size-md);
        letter-spacing: 0.5px;
    }
    
    .nav-container {
        padding: 0 var(--spacing-xs);
    }
    
    .language-switcher {
        transform: scale(0.9);
    }
    
    .hamburger {
        padding: var(--spacing-xs);
    }
    
    .nav-menu {
        padding: var(--spacing-lg);
    }

}

/* 高分辨率屏幕优化 */
@media (min-width: 1400px) {
    .container {
        max-width: 1400px;
    }
    
    .hero-title {
        font-size: 4rem;
    }
    
    .section-title {
        font-size: 3rem;
    }
}

/* 打印样式 */
@media print {
    .header,
    .back-to-top,
    .loading-overlay {
        display: none;
    }
    
    .hero {
        height: auto;
        min-height: auto;
        padding: var(--spacing-2xl) 0;
    }
    
    .hero-background {
        animation: none;
        background: var(--gradient-primary);
    }
    
    .hero-content {
        color: var(--text-dark);
    }
    
    * {
        box-shadow: none !important;
    }
}

/* 无障碍访问 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 深色模式支持 - 禁用自动深色模式 */
@media (prefers-color-scheme: dark) {
    /* 保持浅色主题，不应用深色模式变量 */
    :root {
        /* 强制保持浅色主题 */
        --bg-white: #ffffff !important;
        --bg-light: #f9fafb !important;
        --text-dark: #1f2937 !important;
        --text-medium: #6b7280 !important;
        --text-light: #999999;
    }
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #000080;
        --secondary-color: #ffff00;
        --text-dark: #000000;
        --bg-white: #ffffff;
    }
}

/* ===== 模态弹窗基础样式 ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal-overlay.show {
    display: flex;
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: translateY(50px) scale(0.9);
    transition: all var(--transition-normal);
    max-height: 90vh;
    overflow: hidden;
}

.modal-overlay.show .modal-content {
    transform: translateY(0) scale(1);
}

/* ===== 法律文档模态弹窗 ===== */
.legal-modal {
    max-width: 800px;
    max-height: 80vh;
    width: 90%;
}

.legal-modal .modal-header {
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.legal-modal .modal-header h2 {
    margin: 0;
    color: var(--text-dark);
    font-size: var(--font-size-2xl);
    font-weight: 700;
}

.legal-modal .modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--text-medium);
    cursor: pointer;
    padding: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all var(--transition-normal);
}

.legal-modal .modal-close:hover {
    background: var(--bg-light);
    color: var(--text-dark);
}

.legal-modal .modal-body {
    padding: var(--spacing-xl);
    overflow-y: auto;
    max-height: 60vh;
}

.legal-modal .modal-body h3 {
    color: var(--primary-color);
    font-size: var(--font-size-xl);
    margin: var(--spacing-xl) 0 var(--spacing-md) 0;
    font-weight: 600;
}

.legal-modal .modal-body h3:first-child {
    margin-top: 0;
}

.legal-modal .modal-body p {
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
    color: var(--text-dark);
}

.legal-modal .modal-body ul {
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-xl);
}

.legal-modal .modal-body li {
    margin-bottom: var(--spacing-xs);
    line-height: 1.6;
    color: var(--text-dark);
}

.legal-modal .modal-body strong {
    color: var(--primary-color);
    font-weight: 600;
}