/* ========================================
   全局变量和基础样式
   ======================================== */
:root {
    /* 深蓝科技感配色 */
    --primary-dark: #0a192f;        /* 深蓝背景 */
    --primary-light: #112240;       /* 卡片背景 */
    --accent-color: #64ffda;        /* 强调色（青绿） */
    
    /* 优化后的文字颜色 - 提高对比度 */
    --text-primary: #e6f1ff;        /* 主文字色（更亮） */
    --text-secondary: #a8b2d1;      /* 次要文字色（更亮） */
    --white: #ffffff;               /* 纯白色文字 */
    
    /* Glassmorphism 毛玻璃效果 - 白色半透明 */
    --glass-bg: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.18);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    
    /* 侧边栏宽度 */
    --sidebar-width: 250px;
    
    /* 间距系统 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* 过渡动画 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s ease;
}

/* 重置和基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
                 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
                 sans-serif, 'Microsoft YaHei', '微软雅黑';
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--primary-dark);
    overflow-x: hidden;
}

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--primary-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-color);
    opacity: 0.8;
}

/* ========================================
   工具类
   ======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* 非全屏section的容器需要避开侧边栏，但在剩余空间内居中 */
.section:not(.section-fullscreen) .container {
    margin-left: calc(var(--sidebar-width) + (100% - var(--sidebar-width) - 1200px) / 2);
    margin-right: auto;
    max-width: 1200px;
}

/* 当屏幕较小时，简化为只避开侧边栏 */
@media (max-width: 1450px) {
    .section:not(.section-fullscreen) .container {
        margin-left: var(--sidebar-width);
        margin-right: var(--spacing-md);
    }
}

.section {
    padding: var(--spacing-xl) 0;
    position: relative;
}

.section-title {
    font-size: 2rem;
    color: var(--white);
    text-align: center;
    margin-bottom: var(--spacing-sm);
    position: relative;
}

.about-section .section-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    text-align: center;
    color: var(--text-primary);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    font-weight: 500;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.4);
}

/* Glassmorphism 毛玻璃效果 */
.glass-effect {
    background: var(--glass-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
    transition: all var(--transition-normal);
}

/* 毛玻璃卡片内的文字优化 */
.glass-effect h2,
.glass-effect h3,
.glass-effect p,
.glass-effect li,
.glass-effect span {
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.glass-effect:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(100, 255, 218, 0.15);
}

/* 动画类 */
.fade-in-up {
    animation: fadeInUp 0.8s ease-out;
}

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

/* ========================================
   左侧导航栏
   ======================================== */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    /* 添加黑色半透明背景和毛玻璃模糊效果 */
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.3);
    transition: transform var(--transition-normal);
}

.sidebar-content {
    text-align: center;
    padding: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 100%;
    width: 100%;
}

.name {
    color: var(--white);
    font-size: 1.8rem;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.title {
    color: var(--text-secondary);
    font-size: 1rem;
    letter-spacing: 1px;
}

.nav-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    width: 100%;
}

.nav-menu li {
    margin: 0;
    padding: 0;
    width: 100%;
}

.nav-link {
    display: block;
    padding: var(--spacing-md) var(--spacing-lg);
    padding-left: calc(var(--spacing-lg) - 4px);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 0;
    border-left: 4px solid transparent;
    width: 100%;
    box-sizing: border-box;
    text-align: center;
}

.nav-link:not(.active):hover {
    transition: background-color 0.3s ease, color 0.3s ease, border-left-color 0.3s ease;
}

.nav-link .text {
    font-size: 1.15rem;
    font-weight: 500;
}

.nav-link:hover {
    background: rgba(100, 255, 218, 0.2);
    color: var(--accent-color);
    border-left-color: var(--accent-color);
}

.nav-link.active {
    background: rgba(100, 255, 218, 0.2) !important;
    color: var(--accent-color) !important;
    border-left-color: var(--accent-color) !important;
    transition: none !important;
    -webkit-transition: none !important;
    -moz-transition: none !important;
    -o-transition: none !important;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    padding: 0 var(--spacing-lg);
}

.social-icon {
    font-size: 1.5rem;
    color: var(--text-secondary);
    transition: all var(--transition-normal);
}

.social-icon:hover {
    color: var(--accent-color);
    transform: scale(1.2);
}

/* ========================================
   Hero Section (全屏动态背景)
   ======================================== */
.hero-section {
    height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    /* 移除 overflow: hidden 以允许内容正常流动，背景已固定 */
}

.background-slider {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    /* 确保背景在最底层 */
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    /* 移除 background-attachment: fixed，因为父容器已是 fixed */
    opacity: 0;
    transition: opacity 2s ease-in-out;
    /* 图片加载优化 */
    will-change: opacity;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}

.slide.active {
    opacity: 1;
}

.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, 
                rgba(10, 25, 47, 0.9) 0%, 
                rgba(17, 34, 64, 0.8) 100%);
    z-index: -1;
    pointer-events: none; /* 允许点击穿透遮罩层，虽然它在最底层通常不影响，但作为好习惯 */
}

.hero-content {
    text-align: center;
    z-index: 1;
    padding: var(--spacing-md);
}

.hero-title {
    font-size: 4rem;
    color: var(--white);
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 0 20px rgba(100, 255, 218, 0.5);
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.hero-tags {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.tag {
    background: rgba(100, 255, 218, 0.1);
    color: var(--accent-color);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 20px;
    border: 1px solid var(--accent-color);
    font-size: 0.9rem;
}

.cta-button {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: transparent;
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
    border-radius: 4px;
    font-size: 1.1rem;
    text-decoration: none;
    transition: all var(--transition-normal);
    cursor: pointer;
}

.cta-button:hover {
    background: rgba(100, 255, 218, 0.1);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(100, 255, 218, 0.3);
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--text-secondary);
}

.mouse {
    display: block;
    width: 20px;
    height: 35px;
    border: 2px solid var(--text-secondary);
    border-radius: 15px;
    margin: 0 auto var(--spacing-xs);
    position: relative;
}

.mouse::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 8px;
    background: var(--accent-color);
    border-radius: 2px;
    animation: scroll 1.5s infinite;
}

@keyframes scroll {
    0%, 100% { opacity: 0; transform: translateX(-50%) translateY(0); }
    50% { opacity: 1; transform: translateX(-50%) translateY(10px); }
}

.scroll-indicator p {
    font-size: 0.9rem;
}

/* ========================================
   关于我部分
   ======================================== */
.about-section {
    padding: var(--spacing-lg) 0;
}

/* 关于我 - 毛玻璃容器整体缩放至90% */
.about-text.glass-effect {
    transform: scale(0.9);
    transform-origin: center top;
}

.about-text {
    padding: var(--spacing-lg);
}

.intro-text {
    font-size: 1.25rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
    color: var(--white);
    font-weight: 500;
}

.about-text p {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    font-size: 1.1rem;
    line-height: 1.7;
}

.skills {
    margin: var(--spacing-lg) 0;
}

.skills h3 {
    color: var(--white);
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.skill-tag {
    background: rgba(100, 255, 218, 0.1);
    color: var(--accent-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 15px;
    border: 1px solid var(--accent-color);
    font-size: 0.9rem;
    transition: all var(--transition-normal);
}

.skill-tag:hover {
    background: rgba(100, 255, 218, 0.2);
    transform: translateY(-2px);
}

/* ========================================
   荣誉与经历（新样式）
   ======================================== */
.achievements {
    margin: var(--spacing-md) 0;
}

.achievements h3 {
    color: var(--white);
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
    position: relative;
    padding-left: var(--spacing-md);
}

.achievements h3::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 70%;
    background: var(--accent-color);
    border-radius: 2px;
}

/* 简化版奖项认证样式 */
.achievement-simple {
    margin-bottom: var(--spacing-sm);
    padding: var(--spacing-xs) 0;
    line-height: 1.7;
}

.achievement-label {
    color: var(--accent-color);
    font-weight: bold;
    font-size: 1rem;
}

.achievement-text {
    color: var(--text-primary);
    font-size: 1rem;
}

.experience-list {
    margin-top: var(--spacing-sm);
}

.experience-list h4 {
    color: var(--accent-color);
    font-size: 1.05rem;
    margin-bottom: var(--spacing-xs);
}

.experience-list ul {
    list-style: none;
    padding: 0;
}

.experience-list li {
    display: flex;
    align-items: flex-start;
    padding: var(--spacing-xs) 0;
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 0.95rem;
}

.exp-marker {
    color: var(--accent-color);
    font-weight: bold;
    margin-right: var(--spacing-sm);
    flex-shrink: 0;
    min-width: 18px;
    font-size: 0.95rem;
}

.exp-text {
    flex: 1;
}

.exp-text.future {
    color: var(--text-secondary);
    font-style: italic;
}

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

.stat-item {
    text-align: center;
    padding: var(--spacing-md);
    background: rgba(100, 255, 218, 0.05);
    border-radius: 12px;
    border: 1px solid var(--glass-border);
}

.stat-number {
    display: block;
    font-size: 2.3rem;
    color: var(--accent-color);
    font-weight: bold;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* ========================================
   核心业务部分
   ======================================== */
.services-section {
    /* 移除背景色，让固定背景可见 */
}

.services-section.section-fullscreen {
    min-height: auto;
    padding: var(--spacing-xl) 0;
}

.container-fullwidth {
    width: 100%;
    max-width: 100%;
    padding: 0;
}

.services-section .section-title {
    padding: 0 var(--spacing-md) var(--spacing-lg) var(--sidebar-width);
    font-size: 2rem;
    text-align: center;
    color: var(--white);
    margin: 0;
}

.services-grid-new {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
    width: calc(100% - var(--spacing-lg));
    margin-left: auto;
    margin-right: auto;
    aspect-ratio: 16/9;
    max-height: 75vh;
    padding-left: var(--sidebar-width);
    padding-right: var(--spacing-md);
}

.service-item-new {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
    cursor: pointer;
    background-size: cover;
    background-position: center;
    border-radius: 8px;
}

.service-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.7));
    display: flex;
    align-items: flex-end;
    padding: 2rem;
    transition: background 0.3s ease;
}

.service-item-new:hover .service-overlay {
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.8));
}

.service-number {
    position: absolute;
    left: 2rem;
    bottom: 2rem;
    font-size: 4rem;
    font-weight: bold;
    color: rgba(255, 255, 255, 0.9);
    font-family: 'Georgia', serif;
    opacity: 0.8;
    z-index: 1;
}

.service-content {
    position: absolute;
    left: calc(2rem + 80px);
    bottom: 2rem;
    z-index: 2;
}

.service-en {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 5px;
    font-weight: 500;
}

.service-cn {
    font-size: 1.5rem;
    color: var(--white);
    font-weight: bold;
    margin: 0;
}

/* ========================================
   案例展示部分
   ======================================== */
.portfolio-section {
    min-height: auto;
    padding: var(--spacing-xl) 0;
}

.portfolio-section.section-fullscreen {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 0;
    position: relative;
}

.portfolio-section .container-fullwidth {
    width: 100%;
    max-width: 100%;
    padding: 0;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.portfolio-section .section-title {
    padding: 1rem var(--spacing-md) 0.5rem var(--sidebar-width);
    font-size: 2rem;
    text-align: center;
    color: var(--white);
    margin: 0;
    flex-shrink: 0;
}

.portfolio-section .section-subtitle {
    text-align: center;
    color: var(--text-primary);
    margin-bottom: 14px;
    flex-shrink: 0;
    padding-left: var(--sidebar-width);
    padding-right: var(--spacing-md);
    font-size: 1.25rem;
    font-weight: 500;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.4);
}

/* ========================================
   案例展示 - 新布局（参考核心业务风格）
   ======================================== */
.portfolio-section {
    min-height: auto;
    padding: var(--spacing-md) 0;
    margin-bottom: 200px; /* 增大与下一个section的间距到200px */
}

.portfolio-grid-new {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
    width: calc(100% - var(--spacing-lg));
    margin: 0 auto;
    padding: 0;
    padding-left: var(--sidebar-width);
    padding-right: var(--spacing-md);
    aspect-ratio: 16/10;
    max-height: 75vh;
}

.portfolio-item-new {
    position: relative;
    overflow: hidden;
    cursor: pointer;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    border-radius: 10px;
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.25);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.portfolio-item-new:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.portfolio-overlay-new {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.85));
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--spacing-md);
    transition: background 0.3s ease;
}

.portfolio-item-new:hover .portfolio-overlay-new {
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.9));
}

.portfolio-number {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    font-size: 2.5rem;
    font-weight: bold;
    color: rgba(255, 255, 255, 0.9);
    font-family: 'Georgia', serif;
    opacity: 0.8;
}

.portfolio-content-new {
    z-index: 2;
}

.portfolio-content-new h3 {
    color: var(--white);
    font-size: 1rem;
    margin-bottom: 5px;
    line-height: 1.35;
}

.portfolio-content-new p {
    color: var(--text-primary);
    font-size: 0.75rem;
    margin-bottom: 7px;
    line-height: 1.45;
}

.portfolio-tags-new {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}

.portfolio-tags-new span {
    background: rgba(100, 255, 218, 0.15);
    color: var(--accent-color);
    padding: 3px 9px;
    border-radius: 9px;
    border: 1px solid var(--accent-color);
    font-size: 0.75rem;
    transition: all var(--transition-normal);
}

.portfolio-item-new:hover .portfolio-tags-new span {
    background: rgba(100, 255, 218, 0.25);
}

/* ========================================
   视频播放按钮和弹窗
   ======================================== */
.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 48px;
    height: 48px;
    background: rgba(100, 255, 218, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--primary-dark);
    opacity: 0.85;
    transition: opacity var(--transition-normal), transform var(--transition-normal);
    z-index: 3;
    cursor: pointer;
    box-shadow: 0 4px 18px rgba(100, 255, 218, 0.4);
}

.portfolio-item-new:hover .play-button {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.1);
}

.video-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 10000;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.video-modal.active {
    display: flex;
    opacity: 1;
}

.modal-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    width: 100%;
}

.modal-content video {
    width: 100%;
    height: auto;
    max-height: 80vh;
    border-radius: 8px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.close-btn {
    position: absolute;
    top: -50px;
    right: 0;
    font-size: 2.5rem;
    color: white;
    cursor: pointer;
    transition: color var(--transition-normal);
    line-height: 1;
}

.close-btn:hover {
    color: var(--accent-color);
}

/* 移动端视频弹窗适配 */
@media (max-width: 768px) {
    .play-button {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
        opacity: 0.8;
    }
    
    .video-modal {
        padding: 0;
    }
    
    .modal-content {
        max-width: 100%;
        max-height: 100%;
    }
    
    .modal-content video {
        width: 100%;
        height: 100vh;
        object-fit: contain;
        border-radius: 0;
    }
    
    /* 移动端关闭按钮优化 - 更明显可见 */
    .close-btn {
        position: fixed !important; /* 固定在视口，不随内容滚动 */
        top: 15px !important;
        right: 15px !important;
        font-size: 2.2rem !important;
        background: rgba(0, 0, 0, 0.7) !important; /* 加深背景，更明显 */
        width: 48px !important;
        height: 48px !important;
        border-radius: 50% !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        z-index: 10001 !important; /* 确保在最上层 */
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5) !important; /* 添加阴影增强立体感 */
        backdrop-filter: blur(5px); /* 毛玻璃效果 */
        -webkit-backdrop-filter: blur(5px); /* Safari兼容 */
    }
}

/* 横屏模式优化 */
@media (orientation: landscape) and (max-height: 500px) {
    .modal-content video {
        max-height: 90vh;
    }
}

/* ========================================
   联系方式部分 - 新布局
   ======================================== */
.contact-section {
    /* 移除背景色，让固定背景可见 */
    padding: var(--spacing-xl) 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

/* 联系我页面整体右移100px */
.contact-section .container {
    margin-left: calc(var(--sidebar-width) + (100% - var(--sidebar-width) - 1200px) / 2 + 100px) !important;
}

/* 移动端统一的section样式和布局调整 */
@media (max-width: 768px) {
    /* 移除额外的100px偏移,避免溢出 */
    .contact-section .container {
        margin-left: auto !important;
        margin-right: auto !important;
    }
    
    /* 统一所有section标题的内边距 */
    .services-section .section-title,
    .portfolio-section .section-title,
    .portfolio-section .section-subtitle,
    .contact-section .section-title,
    .contact-section .section-subtitle {
        padding-left: var(--spacing-md);
        padding-right: var(--spacing-md);
    }
    
    /* 统一所有section的padding */
    .services-section.section-fullscreen,
    .portfolio-section,
    .contact-section {
        padding: var(--spacing-md) 0 !important;
    }
    
}

.contact-section .section-title {
    padding: 1rem var(--spacing-md) 0.5rem var(--spacing-md);
    font-size: 2rem;
    text-align: center;
    color: var(--white);
    margin: 0;
}

.contact-section .section-subtitle {
    text-align: center;
    color: var(--text-primary);
    margin-bottom: 14px;
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
    font-size: 1.25rem;
    font-weight: 500;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.4);
}

/* 联系我 - 毛玻璃容器整体缩放至108% (0.9 * 1.2 = 1.08) */
.contact-left.glass-effect,
.contact-right.glass-effect {
    transform: scale(1.08);
    transform-origin: center top;
}

.contact-content-new {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

/* 左侧：微信二维码 */
.contact-left {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.wechat-qr-container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.wechat-qr-large {
    width: 240px;
    height: 240px;
    border-radius: 12px;
    border: 3px solid var(--accent-color);
    box-shadow: 0 8px 32px rgba(100, 255, 218, 0.2);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.wechat-qr-large:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 40px rgba(100, 255, 218, 0.3);
}

.qr-tip {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 1.3rem;
    font-weight: 600;
    text-align: center;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.4);
}

/* 右侧：社交媒体账号列表 */
.contact-right {
    padding: var(--spacing-md);
}

.contact-right h3 {
    color: var(--white);
    font-size: 1.3rem;
    margin-bottom: var(--spacing-xs);
}

.social-intro {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.5;
}

.social-accounts-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.social-account-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(100, 255, 218, 0.05);
    border-radius: 8px;
    border: 1px solid rgba(100, 255, 218, 0.1);
    transition: all var(--transition-normal);
}

.social-account-item:hover {
    background: rgba(100, 255, 218, 0.1);
    border-color: var(--accent-color);
}

.account-info {
    display: flex;
    flex-direction: column;
    flex: 1;
}

.platform-name {
    color: var(--white);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 2px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    gap: 8px;
}

.platform-name i {
    font-size: 1.3rem;
    color: var(--accent-color);
    min-width: 24px;
    text-align: center;
}

.account-name {
    color: var(--accent-color);
    font-size: 0.9rem;
    font-family: 'Courier New', monospace;
}

/* ========================================
   页脚
   ======================================== */
.footer {
    /* 移除背景色，让固定背景可见 */
    padding: var(--spacing-sm) 0;
    border-top: 1px solid var(--glass-border);
}

.footer-content {
    text-align: center;
    color: var(--text-secondary);
}

.icp-info {
    margin: var(--spacing-xs) 0;
    font-size: 0.95rem;
}

.icp-info a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-normal);
}

.icp-info a:hover {
    color: var(--accent-color);
}

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

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    margin: 0 var(--spacing-sm);
    transition: color var(--transition-normal);
}

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

/* ========================================
   响应式设计
   ======================================== */

/* 平板设备 */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    /* 移动端移除侧边栏相关的margin，恢复正常居中 */
    .section:not(.section-fullscreen) .container {
        margin-left: auto;
        margin-right: auto;
    }
    
    .services-section .section-title,
    .portfolio-section .section-title,
    .portfolio-section .section-subtitle,
    .contact-section .section-title,
    .contact-section .section-subtitle {
        padding-left: var(--spacing-md);
        padding-right: var(--spacing-md);
    }
    
    .contact-content-new {
        grid-template-columns: 1fr;
    }
    
    /* 核心业务新布局响应式 */
    .services-grid-new {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
        margin-top: var(--spacing-md);
        padding-left: 0;
        width: calc(100% - var(--spacing-md));
        aspect-ratio: auto;
        max-height: none;
    }
    
    .service-item-new {
        aspect-ratio: 16/9;
        min-height: 250px;
    }
    
    .service-number {
        font-size: 3rem;
        left: 1.5rem;
        bottom: 1.5rem;
    }
    
    .service-content {
        left: calc(1.5rem + 60px);
        bottom: 1.5rem;
    }
    
    .service-en {
        font-size: 0.75rem;
    }
    
    .service-cn {
        font-size: 1.2rem;
    }
    
    .stats {
        grid-template-columns: 1fr;
    }
    
    /* 案例展示新布局响应式 */
    .portfolio-grid-new {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
        width: calc(100% - var(--spacing-md));
        padding-left: 0;
    }
    
    .portfolio-item-new {
        aspect-ratio: 16/10;
        min-height: 200px;
    }
    
    .portfolio-number {
        font-size: 2.2rem;
        top: var(--spacing-sm);
        left: var(--spacing-sm);
    }
    
    .portfolio-content-new h3 {
        font-size: 1rem;
    }
    
    .portfolio-content-new p {
        font-size: 0.8rem;
    }
    
    /* 联系方式新布局响应式 */
    .contact-left,
    .contact-right {
        padding: var(--spacing-md);
    }
    
    .wechat-qr-large {
        width: 240px;
        height: 240px;
    }
    
    .social-account-item {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}

/* 手机设备 */
@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-tags {
        display: none;
    }
    
    .section {
        padding: var(--spacing-lg) 0;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
}

/* ========================================
   打印样式优化
   ======================================== */
@media print {
    .sidebar,
    .scroll-indicator,
    .cta-button {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .glass-effect {
        background: white;
        border: 1px solid #ccc;
    }
}