/* CSS变量定义 */
:root {
    /* 品牌颜色 */
    --primary-color: #1a73e8;
    --primary-dark: #1557b0;
    --secondary-color: #4285f4;
    --text-color: #333333;
    --text-light: #666666;
    --text-lighter: #999999;
    --white-color: #ffffff;
    --light-gray: #f5f5f5;
    --medium-gray: #e0e0e0;
    --dark-gray: #333333;
    --border-color: var(--medium-gray);
    
    /* 字体设置 */
    --font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;
    --font-size-2xl: 32px;
    --font-size-3xl: 48px;
    --font-size-5xl: 64px;
    --font-size-6xl: 72px;
    
    /* 间距设置 */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-2xl: 64px;
    --spacing-3xl: 96px;
    
    /* 边框和阴影 */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 16px;
    --border-radius-xl: 20px;
    --border-radius-2xl: 24px;
    --border-radius-3xl: 28px;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 12px 32px rgba(0, 0, 0, 0.2);
    
    /* 过渡动画 */
    --transition: all 0.3s ease;
    --transition-fast: all 0.2s ease;
}

/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

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

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition);
    outline: none;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white-color);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: var(--white-color);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

/* 标题样式 */
.section-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.section-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-light);
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* 发展历程现代化标题样式 */
.timeline .section-header {
    text-align: center;
    margin-bottom: 80px;
    position: relative;
    z-index: 3;
}

.timeline .section-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 20px;
    position: relative;
    letter-spacing: -0.5px;
}

.timeline .section-title::after {
    display: none;
}

.timeline .section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    font-weight: 400;
    margin-bottom: 0;
    position: relative;
    z-index: 2;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

/* 导航栏样式 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: transparent;
    backdrop-filter: none;
    box-shadow: none;
    z-index: 1000;
    transition: var(--transition);
}

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

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

.navbar-brand .logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    text-decoration: none;
    color: var(--dark-gray);
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.navbar-brand .logo i {
    color: var(--primary-color);
    font-size: var(--font-size-2xl);
}

.logo-image {
    height: 40px;
    width: auto;
    object-fit: contain;
    transition: var(--transition);
}

.navbar-menu {
    flex: 1;
    text-align: center;
}

.nav-list {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    list-style: none;
}

.nav-item .nav-link {
    color: var(--text-color);
    text-decoration: none;
    font-size: var(--font-size-base);
    font-weight: 500;
    padding: var(--spacing-xs) 0;
    position: relative;
    transition: var(--transition);
}

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

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

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

.navbar-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: var(--font-size-2xl);
    color: var(--text-color);
    cursor: pointer;
    transition: var(--transition);
}

/* 移动端菜单 */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    height: 100vh;
    background-color: var(--white-color);
    box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
    z-index: 1001;
    transition: var(--transition);
    overflow-y: auto;
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--medium-gray);
}

.mobile-menu-header .logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    text-decoration: none;
    color: var(--dark-gray);
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.mobile-menu-header .logo i {
    color: var(--primary-color);
    font-size: var(--font-size-2xl);
}

.mobile-menu-close {
    background: none;
    border: none;
    font-size: var(--font-size-2xl);
    color: var(--text-color);
    cursor: pointer;
    transition: var(--transition);
}

.mobile-menu-close:hover {
    color: var(--primary-color);
}

.mobile-nav-list {
    list-style: none;
    padding: var(--spacing-md);
}

.mobile-nav-item {
    margin-bottom: var(--spacing-md);
}

.mobile-nav-link {
    display: block;
    padding: var(--spacing-sm);
    color: var(--text-color);
    text-decoration: none;
    font-size: var(--font-size-lg);
    font-weight: 500;
    transition: var(--transition);
    border-radius: var(--border-radius-sm);
}

.mobile-nav-link:hover {
    background-color: var(--light-gray);
    color: var(--primary-color);
}

.mobile-menu-actions {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

/* 菜单打开时的背景遮罩 */
body.menu-open {
    overflow: hidden;
}

body.menu-open::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
}

/* 视频横幅区域 */
.video-banner {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 宽高比 */
    height: 0;
    overflow: hidden;
}

.video-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    object-fit: cover;
}

.video-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
    text-align: center;
    color: white;
    width: 80%;
    max-width: 800px;
}

.video-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.video-content .btn {
    font-size: var(--font-size-lg);
    padding: var(--spacing-sm) var(--spacing-xl);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

/* 横幅区域 */
.banner {
    background: #b31515;
    color: var(--white-color);
    padding: 160px 0 120px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

/* 放大缩小动画 */
@keyframes waveAnimation {
    0% { transform: scale(1); opacity: 1; }
    33% { transform: scale(4) translateY(-30px); opacity: 1; }
    66% { transform: scale(0.8) translateY(15px); opacity: 1; }
    100% { transform: scale(1); opacity: 1; }
}

/* 应用波浪动画到标题 - 仅加载时显示一次 */
.banner-title {
    animation: waveAnimation 3s ease-in-out 1 forwards;
    display: inline-block;
    transform-origin: center center;
    text-align: center;
    margin: 0 auto;
    max-width: 100%;
    position: relative;
    z-index: 2;
}

/* 背景装饰容器 */
.banner-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

/* 年份背景文字容器 */
.banner-years {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    opacity: 0.05;
    font-size: 8rem;
    font-weight: 900;
    color: #000000;
    z-index: 1;
    pointer-events: none;
    overflow: hidden;
}

/* 业务板块Logo背景容器 */
.banner-logos {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.15;
    z-index: 2;
    pointer-events: none;
    overflow: hidden;
}

/* Logo项样式 */
.logo-item {
    position: absolute;
    transform: rotate(var(--rotate, 0deg)) scale(var(--scale, 1));
    animation: logoFloat 15s ease-in-out infinite alternate;
    filter: grayscale(100%);
    opacity: 0.8;
    transition: all 0.3s ease;
}

/* Logo图片样式 */
.bg-logo {
    width: 150px;
    height: auto;
    max-height: 150px;
    object-fit: contain;
}

/* Logo浮动动画 */
@keyframes logoFloat {
    0% {
        transform: rotate(var(--rotate, 0deg)) scale(var(--scale, 1));
    }
    100% {
        transform: rotate(calc(var(--rotate, 0deg) + 10deg)) scale(calc(var(--scale, 1) * 1.1));
    }
}

/* Logo项延迟动画 */
.logo-item:nth-child(1) { animation-delay: 0s; }
.logo-item:nth-child(2) { animation-delay: 2s; }
.logo-item:nth-child(3) { animation-delay: 4s; }
.logo-item:nth-child(4) { animation-delay: 6s; }
.logo-item:nth-child(5) { animation-delay: 8s; }
.logo-item:nth-child(6) { animation-delay: 10s; }

/* 响应式调整Logo大小 */
@media (max-width: 1200px) {
    .bg-logo {
        width: 120px;
        max-height: 120px;
    }
    .banner-logos {
        opacity: 0.06;
    }
}

@media (max-width: 768px) {
    .bg-logo {
        width: 80px;
        max-height: 80px;
    }
    .banner-logos {
        opacity: 0.04;
    }
}

@media (max-width: 480px) {
    .bg-logo {
        width: 50px;
        max-height: 50px;
    }
    .banner-logos {
        opacity: 0.03;
    }
}

/* 单个年份文字样式 */
.year-text {
    margin: 0;
    line-height: 1;
    white-space: nowrap;
    transition: all 0.3s ease;
    transform: rotate(var(--rotate, 0deg)) translateY(var(--translate-y, 0px));
    animation: float 10s ease-in-out infinite;
}

/* 为不同年份添加随机旋转和位移 */
.year-text:nth-child(1) { --rotate: -5deg; --translate-y: -20px; }
.year-text:nth-child(2) { --rotate: 3deg; --translate-y: 15px; }
.year-text:nth-child(3) { --rotate: -2deg; --translate-y: -10px; }
.year-text:nth-child(4) { --rotate: 5deg; --translate-y: 20px; }
.year-text:nth-child(5) { --rotate: -3deg; --translate-y: -5px; }
.year-text:nth-child(6) { --rotate: 2deg; --translate-y: 10px; }
.year-text:nth-child(7) { --rotate: -4deg; --translate-y: -15px; }
.year-text:nth-child(8) { --rotate: 1deg; --translate-y: 25px; }
.year-text:nth-child(9) { --rotate: -6deg; --translate-y: -25px; }
.year-text:nth-child(10) { --rotate: 4deg; --translate-y: 5px; }
.year-text:nth-child(11) { --rotate: -1deg; --translate-y: -10px; }
.year-text:nth-child(12) { --rotate: 6deg; --translate-y: 15px; }
.year-text:nth-child(13) { --rotate: -4deg; --translate-y: -20px; }
.year-text:nth-child(14) { --rotate: 3deg; --translate-y: 10px; }

/* 添加浮动动画 */
@keyframes float {
    0%, 100% { transform: rotate(var(--rotate, 0deg)) translateY(var(--translate-y, 0px)) translateX(0px); }
    33% { transform: rotate(var(--rotate, 0deg)) translateY(calc(var(--translate-y, 0px) - 10px)) translateX(5px); }
    66% { transform: rotate(var(--rotate, 0deg)) translateY(calc(var(--translate-y, 0px) + 10px)) translateX(-5px); }
}

/* 响应式调整年份大小 */
@media (max-width: 1200px) {
    .banner-years {
        font-size: 6rem;
        opacity: 0.04;
    }
}

@media (max-width: 768px) {
    .banner-years {
        font-size: 4rem;
        opacity: 0.03;
    }
}

@media (max-width: 480px) {
    .banner-years {
        font-size: 2.5rem;
        opacity: 0.02;
        flex-direction: row;
        justify-content: space-around;
    }
}

/* 修改横幅区域按钮颜色 */
.banner .btn-primary {
    background-color: #ffffff;
    color: #b31515;
    border: 2px solid #ffffff;
}

.banner .btn-primary:hover {
    background-color: transparent;
    color: #ffffff;
}

.banner .btn-secondary {
    background-color: transparent;
    color: #ffffff;
    border: 2px solid #ffffff;
}

.banner .btn-secondary:hover {
    background-color: #ffffff;
    color: #b31515;
}

.banner-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.banner-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.banner-subtitle {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-2xl);
    opacity: 0.9;
    line-height: 1.5;
}

.banner-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* 关于我们 */
.about {
    padding: 120px 0;
    background-color: var(--white-color);
    position: relative;
    overflow: hidden;
}

/* 背景装饰 */
.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    clip-path: polygon(0 0, 100% 0, 100% 80%, 0 100%);
    opacity: 0.05;
    z-index: 0;
}

.about .container {
    position: relative;
    z-index: 1;
}

/* 核心介绍卡片 */
.about-card {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 250, 252, 0.98) 100%);
    border-radius: var(--border-radius-2xl);
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.05), 0 4px 15px rgba(0, 0, 0, 0.02);
    transition: all 0.45s cubic-bezier(0.4, 0, 0.2, 1) ease;
    border: 1px solid rgba(255, 255, 255, 0.8);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(15px);
}

.about-card::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 50%, #185abc 100%);
    border-radius: var(--border-radius-2xl);
    z-index: -1;
    opacity: 0;
    transition: opacity 0.5s ease, transform 0.5s ease;
    transform: scale(0.98);
}

.about-card::after {
    content: '';
    position: absolute;
    top: -30%;
    right: -30%;
    width: 160%;
    height: 160%;
    background: radial-gradient(circle at center, rgba(26, 115, 232, 0.1) 0%, rgba(66, 133, 244, 0.07) 40%, transparent 100%);
    z-index: 0;
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1) ease;
    transform: rotate(-15deg) scale(1);
    opacity: 0.8;
}

.about-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12), 0 10px 25px rgba(26, 115, 232, 0.1);
}

.about-card:hover::before {
    opacity: 0.7;
    transform: scale(1);
}

.about-card:hover::after {
    transform: scale(1.2) rotate(0deg);
    opacity: 0.5;
}

.about-intro {
    background: linear-gradient(135deg, rgba(26, 115, 232, 0.05) 0%, rgba(66, 133, 244, 0.05) 100%);
    border-left: none;
}

.about-card-content {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.about-icon {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white-color);
    box-shadow: 0 8px 25px rgba(26, 115, 232, 0.2);
    transition: all 0.45s cubic-bezier(0.4, 0, 0.2, 1) ease;
}

.about-card:hover .about-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 12px 35px rgba(26, 115, 232, 0.35);
}

.about-description {
    flex: 1;
    color: var(--text-light);
    line-height: 1.9;
    font-size: var(--font-size-md);
    margin: 0;
    position: relative;
    z-index: 1;
    transition: all 0.45s cubic-bezier(0.4, 0, 0.2, 1) ease;
    font-weight: 400;
}

/* 优化核心介绍卡片的响应式布局 */
@media (max-width: 768px) {
    .about-card-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .about-icon {
        margin-bottom: var(--spacing-lg);
    }
}

/* 使命愿景网格 */
.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-3xl);
}

.about-mission {
    background: linear-gradient(135deg, rgba(26, 115, 232, 0.05) 0%, rgba(66, 133, 244, 0.05) 100%);
}

.about-vision {
    background: linear-gradient(135deg, rgba(66, 133, 244, 0.05) 0%, rgba(26, 115, 232, 0.05) 100%);
}

.about-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.about-card-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--dark-gray);
    margin: 0;
    transition: all 0.45s cubic-bezier(0.4, 0, 0.2, 1) ease;
}

.about-card:hover .about-card-title {
    color: var(--primary-color);
}

.about-card-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white-color);
    box-shadow: 0 8px 25px rgba(26, 115, 232, 0.2);
    transition: all 0.45s cubic-bezier(0.4, 0, 0.2, 1) ease;
}

.about-card:hover .about-card-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 12px 35px rgba(26, 115, 232, 0.35);
}

.about-card-text {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 1;
    transition: all 0.45s cubic-bezier(0.4, 0, 0.2, 1) ease;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-card-description {
    color: var(--text-light);
    line-height: 1.9;
    margin: 0;
    position: relative;
    z-index: 1;
    transition: all 0.45s cubic-bezier(0.4, 0, 0.2, 1) ease;
    font-size: var(--font-size-md);
    font-weight: 400;
}



/* 发展历程科技感动画 */
@keyframes gridMove {
    0% { background-position: 0 0, 0 0, center center, 20% 80%, 80% 20%; }
    100% { background-position: 50px 50px, 50px 50px, center center, 30% 70%, 70% 30%; }
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.5; transform: scaleX(1); }
    50% { opacity: 1; transform: scaleX(1.05); }
}

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

@keyframes titleGlow {
    0%, 100% { text-shadow: 0 0 20px rgba(0, 202, 176, 0.5); }
    50% { text-shadow: 0 0 30px rgba(0, 202, 176, 0.8), 0 0 40px rgba(0, 202, 176, 0.4); }
}

/* 新增动画关键帧 */
@keyframes backgroundPulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

@keyframes lineSlide {
    0% {
        transform: translateX(-100%);
        opacity: 0;
    }
    20% {
        opacity: 1;
    }
    80% {
        opacity: 1;
    }
    100% {
        transform: translateX(100%);
        opacity: 0;
    }
}

@keyframes iconPulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 40px rgba(0, 202, 176, 0.6), inset 0 0 20px rgba(255, 255, 255, 0.2), 0 0 0 2px rgba(0, 202, 176, 0.3);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 0 60px rgba(0, 202, 176, 0.8), inset 0 0 20px rgba(255, 255, 255, 0.3), 0 0 0 3px rgba(0, 202, 176, 0.5);
    }
}

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

@keyframes gridFloat {
    0%, 100% {
        transform: translateY(0px) translateX(0px);
    }
    25% {
        transform: translateY(-5px) translateX(5px);
    }
    50% {
        transform: translateY(5px) translateX(-5px);
    }
    75% {
        transform: translateY(-3px) translateX(3px);
    }
}

@keyframes scrollbarPulse {
    0%, 100% {
        opacity: 0.8;
        transform: scaleY(1);
    }
    50% {
        opacity: 1;
        transform: scaleY(1.2);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .about {
        padding: 80px 0;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .about-card {
        padding: var(--spacing-xl);
    }
    
    .about-card-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .about-icon {
        margin-bottom: var(--spacing-lg);
    }
    
    .about-card-header {
        flex-direction: column;
        gap: var(--spacing-lg);
        text-align: center;
    }
    

    
    
    
    
    
    
    
    
    
    
    
}

@media (max-width: 576px) {
}

@media (max-width: 480px) {
    .about {
        padding: 60px 0;
    }
    
    .about-card {
        padding: var(--spacing-lg);
    }
}

/* 发展历程样式 - 多图轮播设计 */
.timeline {
    padding: var(--spacing-xl) 0 var(--spacing-xl);
    background-color: var(--light-gray);
    position: relative;
    overflow: hidden;
}

.timeline .container {
    position: relative;
    z-index: 2;
}

/* 多图轮播容器 - 改为左右布局，与其他版块宽度一致 */
.timeline-carousel {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: row; /* 改为左右布局 */
    gap: var(--spacing-md);
    background-color: var(--light-gray);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    height: auto;
    min-height: 500px;
}

/* 主轮播区域 - 占据65%宽度，非宽屏，放在右侧，垂直居中 */
.carousel-main {
    flex: 0 0 calc(75% - 0.5rem); /* 左右布局中，主轮播区域占据75%宽度减去gap，确保总宽度不超过100% */
    margin-bottom: 0;
    order: 1; /* 调整顺序，放在左侧 */
    display: flex;
    align-items: center;
    justify-content: center;
    height: auto;
    min-height: 450px;
    position: relative;
    z-index: 1;
    overflow: hidden;
}

.main-carousel-container {
    position: relative;
    overflow: hidden;
    background: transparent;
    border-radius: var(--border-radius-lg);
    width: 100%;
    height: 100%;
    z-index: 3;
}

.main-slide-content {
    background-color: var(--white-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    margin: 0;
    max-width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
    position: relative;
    z-index: 4; /* 确保主轮播内容在最上层 */
    overflow: hidden;
}

.main-carousel-track {
    display: flex;
    transition: transform 0.4s cubic-bezier(0.4, 0.0, 0.2, 1);
    will-change: transform;
}

.main-carousel-slide {
    flex: 0 0 100%;
    width: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.main-carousel-slide.active {
    opacity: 1;
    visibility: visible;
}

.main-slide-year {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.main-slide-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.main-slide-description {
    font-size: var(--font-size-base);
    color: var(--text-light);
    line-height: 1.5;
    margin-bottom: var(--spacing-md);
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.main-slide-image {
    width: 100%;
    max-width: 100%;
    aspect-ratio: 16/9;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    margin-top: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
}

.main-slide-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* 副轮播区域 - 占据30%宽度，放在左侧 */
.carousel-thumbnails {
    flex: 0 0 calc(25% - 0.5rem); /* 左右布局中，副轮播区域占据25%宽度减去gap，确保总宽度不超过100% */
    position: relative;
    order: 2; /* 调整顺序，放在右侧 */
    z-index: 2;
    overflow: visible;
    display: flex;
    align-items: center;
    justify-content: center;
    height: auto;
    min-height: 450px;
    max-height: 600px; /* 限制最大高度，与左侧保持一致 */
}

.thumbnail-carousel-container {
    position: relative;
    overflow-y: hidden; /* 移除垂直滚动条 */
    overflow-x: hidden;
    border-radius: var(--border-radius-md);
    background: var(--white-color);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-md) var(--spacing-sm);
    height: 100%; /* 调整高度为100%，适应父容器 */
    width: 100%;
    min-height: 450px;
    max-height: calc(100% - var(--spacing-md)); /* 限制最大高度，减去内边距 */
}

/* 自定义垂直滚动条样式 */
.thumbnail-carousel-container::-webkit-scrollbar {
    width: 6px;
}

.thumbnail-carousel-container::-webkit-scrollbar-track {
    background: var(--light-gray);
    border-radius: 3px;
}

.thumbnail-carousel-container::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 3px;
}

.thumbnail-carousel-container::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

.thumbnail-carousel-track {
    display: flex;
    flex-direction: column; /* 改为垂直排列 */
    transition: transform 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
    will-change: transform;
    gap: var(--spacing-sm);
}

.thumbnail-carousel-slide {
    flex: 0 0 auto;
    width: 100%;
    margin-right: 0;
    margin-bottom: var(--spacing-xs);
    cursor: pointer;
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    transition: var(--transition);
    opacity: 0.7;
    transform: scale(0.95);
}

.thumbnail-carousel-slide:last-child {
    margin-bottom: 0;
}

.thumbnail-carousel-slide.active {
    opacity: 1;
    transform: translateX(5px) scale(1); /* 恢复 translateX，适应垂直排列 */
    box-shadow: 0 0 0 2px var(--primary-color);
}

.thumbnail-carousel-slide:hover {
    opacity: 1;
    transform: translateX(5px) scale(1.05); /* 恢复 translateX，适应垂直排列 */
}

.thumbnail-slide-content {
    padding: var(--spacing-xs);
    text-align: center;
}

.thumbnail-slide-year {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.thumbnail-slide-title {
    font-size: var(--font-size-xs);
    color: var(--text-color);
    margin-bottom: var(--spacing-xs);
    line-height: 1.4;
    font-weight: 500;
}

.thumbnail-slide-image {
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: var(--border-radius-sm);
    overflow: hidden;
}

.thumbnail-slide-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* 主轮播控制按钮 - 隐藏 */
.carousel-controls {
    display: none;
}

/* 副轮播控制按钮样式 */
.thumbnail-carousel-controls {
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    z-index: 15;
    pointer-events: none;
}

.carousel-btn-up {
    position: absolute;
    top: var(--spacing-md);
    right: 50%;
    transform: translateX(50%);
    pointer-events: auto;
    background-color: var(--primary-color);
    color: var(--white-color);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.carousel-btn-down {
    position: absolute;
    bottom: var(--spacing-md);
    right: 50%;
    transform: translateX(50%);
    pointer-events: auto;
    background-color: var(--primary-color);
    color: var(--white-color);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.carousel-btn-up:hover,
.carousel-btn-down:hover {
    background-color: var(--primary-dark);
    transform: translateX(50%) translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.carousel-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    color: var(--primary-color);
    font-size: var(--font-size-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    pointer-events: auto;
    transform: none;
}

.carousel-btn:hover {
    background: var(--primary-color);
    color: var(--white-color);
    transform: scale(1.1);
}

.carousel-btn:active {
    transform: scale(0.95);
}

/* 副轮播容器样式调整 */
.carousel-thumbnails {
    position: relative;
    padding-right: 0; /* 按钮现在在内部，移除右侧边距 */
}

/* 确保副轮播容器为相对定位，以便控制按钮能正确定位 */
.thumbnail-carousel-container {
    position: relative;
}

/* 垂直时间轴容器 - 新布局 */
.timeline-vertical {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    padding: var(--spacing-2xl) 0;
}

/* 时间轴主线 */
.timeline-vertical::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, 
        var(--primary-color) 0%, 
        var(--secondary-color) 30%, 
        #667eea 50%, 
        var(--secondary-color) 70%, 
        var(--primary-color) 100%);
    background-size: 100% 200%;
    animation: waveLine 3s ease-in-out infinite;
    transform: translateX(-50%);
    border-radius: 2px;
    z-index: 1;
}

/* 时间轴节点 */
.timeline-node {
    position: relative;
    margin-bottom: var(--spacing-3xl);
    display: flex;
    align-items: center;
    min-height: 120px;
}

.timeline-node:nth-child(odd) {
    flex-direction: row;
}

.timeline-node:nth-child(even) {
    flex-direction: row-reverse;
}

/* 时间点 */
.timeline-point {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    background: var(--white-color);
    border: 4px solid var(--primary-color);
    border-radius: 50%;
    z-index: 2;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.timeline-node:hover .timeline-point {
    transform: translate(-50%, -50%) scale(1.2);
    box-shadow: var(--shadow-lg);
    border-color: #667eea;
}

/* 时间轴内容卡片 */
.timeline-content {
    width: 45%;
    background: var(--white-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--medium-gray);
    position: relative;
    transition: var(--transition);
}

.timeline-node:nth-child(odd) .timeline-content {
    margin-right: auto;
    margin-left: 0;
}

.timeline-node:nth-child(even) .timeline-content {
    margin-left: auto;
    margin-right: 0;
}

.timeline-node:hover .timeline-content {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

/* 时间轴内容装饰波浪线 */
.timeline-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, 
        var(--primary-color) 0%, 
        var(--secondary-color) 25%, 
        #667eea 50%, 
        var(--secondary-color) 75%, 
        var(--primary-color) 100%);
    background-size: 200% 100%;
    animation: waveLine 3s ease-in-out infinite;
    border-radius: var(--border-radius-sm) var(--border-radius-sm) 0 0;
}

/* 时间轴内容底部装饰 */
.timeline-content::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 15%;
    right: 15%;
    height: 2px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        var(--primary-color) 30%, 
        #667eea 50%, 
        var(--primary-color) 70%, 
        transparent 100%);
    opacity: 0.6;
    border-radius: 1px;
}

/* 波浪线条动画 */
@keyframes waveLine {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

/* 侧边波浪动画 */
@keyframes waveSide {
    0%, 100% {
        background-position: 0% 0%;
    }
    50% {
        background-position: 0% 100%;
    }
}



/* 时间轴标题样式 */
.timeline-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: var(--spacing-sm);
    position: relative;
}

.timeline-title::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 40px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), #667eea);
    border-radius: 1px;
}

/* 时间轴描述 */
.timeline-description {
    font-size: var(--font-size-base);
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

/* 时间轴图片 */
.timeline-image {
    margin-bottom: var(--spacing-md);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: var(--transition);
    background-color: var(--light-gray);
}

.timeline-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
    border-radius: var(--border-radius-md);
}

/* 时间线年份 */
.timeline-year {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: var(--spacing-sm);
    text-align: center;
    position: relative;
}

.timeline-year::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 2px;
    background-color: var(--primary-color);
    border-radius: 1px;
}

/* 月份文字 - 霓虹效果 */
/* 时间线月份 */
.timeline-month {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-color);
    text-align: center;
    margin-bottom: var(--spacing-sm);
    position: relative;
    display: inline-block;
    padding: 0.375rem 0.75rem;
    border-radius: var(--border-radius-md);
    transition: var(--transition);
}



/* 时间线月份悬浮效果 */
.timeline-item:hover .timeline-month {
    color: var(--primary-color);
    background-color: var(--primary-light);
}

/* 激活状态样式 */
.timeline-item--active .timeline-month {
    color: var(--primary-color);
    background-color: var(--primary-light);
    font-weight: 700;
}

/* 文字发光动画 */


.timeline-year::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 2px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 1px;
}

/* 激活状态装饰线效果 */
.timeline-item--active .timeline-year::after {
    width: 60px;
    height: 3px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #667eea 100%);
    animation: lineGlow 1.5s ease-in-out infinite alternate;
    box-shadow: 0 0 10px rgba(102, 126, 234, 0.6);
}

/* 装饰线发光动画 */
@keyframes lineGlow {
    0% {
        opacity: 0.8;
        transform: translateX(-50%) scaleX(1);
    }
    100% {
        opacity: 1;
        transform: translateX(-50%) scaleX(1.2);
    }
}

/* 发展历程响应式设计 */
@media (max-width: 1200px) {
    .timeline-vertical {
        max-width: 800px;
        padding: var(--spacing-xl) 0;
    }
    
    .timeline-content {
        width: 48%;
        padding: var(--spacing-md);
    }
    
    .timeline-node {
        min-height: 100px;
        margin-bottom: var(--spacing-2xl);
    }
    
    .timeline-point {
        width: 16px;
        height: 16px;
        border-width: 3px;
    }
}

@media (max-width: 992px) {
    .timeline-item {
        width: 150px;
    }
    
    .timeline-item--active {
        width: 180px;
    }
    
    .timeline-navigation {
        padding: 0 40px; /* 进一步调整导航按钮padding */
    }
    
    .timeline-container {
        left: 40px; /* 调整容器位置 */
        right: 40px;
        max-width: calc(100vw - 240px); /* 调整容器宽度 */
    }
    
    .timeline-navigation::before,
    .timeline-navigation::after {
        width: calc((100% - 180px) / 2);
    }
    
    .timeline-image {
        height: 120px;
    }
    
    .timeline-year {
        font-size: 22px;
    }
    
    .timeline-month {
        font-size: 13px;
    }
}

@media (max-width: 768px) {
    .timeline {
        padding: 80px 0 60px;
    }
    
    .timeline-navigation {
        display: none;
    }
    
    .timeline-container {
        overflow-x: auto;
        overflow-y: hidden;
        scroll-behavior: smooth;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        padding: 80px 20px 40px;
        justify-content: flex-start;
        gap: 16px;
        background: 
            linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 255, 255, 0.9) 100%);
        backdrop-filter: blur(25px) saturate(180%);
        border-radius: 24px;
        margin: 0 20px;
    }
    
    .timeline-container::-webkit-scrollbar {
        display: none;
    }
    
    .timeline-item {
        width: 200px;
        height: 380px;
        opacity: 1;
        transform: translateY(0) scale(1);
        border-radius: 24px;
    }
    
    .timeline-item--active {
        width: 220px;
        height: 400px;
        transform: translateY(0) scale(1.05);
    }
    
    /* 移动端隐藏侧边波浪线 */
    .timeline-item::before,
    .timeline-item::after {
        display: none;
    }
    
    .timeline-image {
        height: 150px;
        border-radius: 16px;
    }
    
    /* 优化标题响应式 */
    .timeline .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .timeline .section-subtitle {
        font-size: var(--font-size-base);
    }
    
    .timeline-year {
        font-size: 22px;
    }
    
    .timeline-month {
        font-size: 14px;
    }
}

@media (max-width: 576px) {
    .timeline-item {
        width: 140px;
    }
    
    .timeline-item--active {
        width: 140px;
    }
    
    .timeline-image {
        height: 100px;
        margin-bottom: 10px;
    }
    
    .timeline-year {
        font-size: 18px;
    }
    
    .timeline-month {
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    .timeline-item {
        width: 120px;
    }
    
    .timeline-item--active {
        width: 120px;
    }
    
    .timeline-image {
        height: 90px;
    }
    
    .timeline-year {
        font-size: 16px;
    }
    
    .timeline-month {
        font-size: 11px;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .timeline-item:active {
        transform: translateY(-2px);
    }
    
    .timeline-item--active:active {
        transform: scale(1.02) translateY(-2px);
    }
}

/* 业务板块 */
.business {
    padding: 120px 0;
    background-color: var(--light-gray);
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.business-card {
    background-color: var(--white-color);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    text-align: center;
}

.business-card-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.business-card-link:hover {
    color: inherit;
    text-decoration: none;
}

.business-card-link:hover .business-card {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.business-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.business-icon {
    width: 150px;
    height: 93px;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-sm);
    overflow: hidden;
    transition: var(--transition);
    background-color: rgba(0, 0, 0, 0.05);
}

/* OMO即时商业 - 橙色背景 */
.business-grid > :nth-child(1) .business-icon {
    background-color: rgba(252, 105, 0, 0.1);
}

/* 灵活用工 - 化工色背景 */
.business-grid > :nth-child(2) .business-icon {
    background-color: rgba(179, 21, 21, 0.1);
}

/* 媒介宣发 - 深蓝背景 */
.business-grid > :nth-child(3) .business-icon {
    background-color: rgba(4, 36, 73, 0.1);
}

/* 无人配送 - 默认蓝色背景 */
.business-grid > :nth-child(4) .business-icon {
    background-color: rgba(26, 115, 232, 0.1);
}

/* 克兰杜拉 - 黑色背景 */
.business-grid > :nth-child(5) .business-icon {
    background-color: rgba(0, 0, 0, 0.1);
}

/* 蟠果会 - 绿色背景 */
.business-grid > :nth-child(6) .business-icon {
    background-color: rgba(75, 228, 36, 0.1);
}

.business-card:hover .business-icon {
    transform: scale(1.05);
}

.business-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.business-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

/* OMO即时商业 - 橙色 */
.business-grid > :nth-child(1) .business-title {
    color: #ff6a00;
}

/* 灵活用工 - 化工色（红色） */
.business-grid > :nth-child(2) .business-title {
    color: #b31515;
}

/* 媒介宣发 - 深蓝 */
.business-grid > :nth-child(3) .business-title {
    color: #1565C0;
}

/* 无人配送 - 保持默认蓝色 */
.business-grid > :nth-child(4) .business-title {
    color: var(--primary-color);
}

/* 克兰杜拉 - 黑色 */
.business-grid > :nth-child(5) .business-title {
    color: #000000;
}

/* 蟠果会 - 绿色 */
.business-grid > :nth-child(6) .business-title {
    color: #2E7D32;
}

.business-description {
    color: var(--text-light);
    line-height: 1.6;
}

/* 技术创新 */
.technology {
    padding: 120px 0;
    background-color: var(--white-color);
}

.technology-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.technology-heading {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-md);
}

.technology-text {
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.technology-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.feature-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    padding: var(--spacing-md);
    background-color: var(--light-gray);
    border-radius: var(--border-radius-lg);
    transition: var(--transition);
}

.feature-item:hover {
    background-color: #e8f8f5;
    transform: translateX(5px);
}

.feature-item i {
    font-size: var(--font-size-xl);
    color: var(--primary-color);
    margin-top: 2px;
    flex-shrink: 0;
}

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

.feature-content p {
    color: var(--text-light);
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

.technology-image {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    transition: var(--transition);
}

.technology-right:hover .technology-image {
    transform: scale(1.02);
}

/* 技术内容面板 */
.technology-right {
    position: relative;
}

.tech-content-panel {
    display: none;
    animation: fadeIn 0.5s ease-in-out;
}

.tech-content-panel.active {
    display: block;
}

.tech-content {
    margin-top: 0;
    padding: var(--spacing-lg);
    background-color: var(--white-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.tech-content h3 {
    color: var(--dark-gray);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-xl);
}

.tech-content p {
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

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

.tech-content li {
    padding: var(--spacing-xs) 0;
    color: var(--text-light);
    position: relative;
    padding-left: var(--spacing-lg);
}

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

/* 功能项激活状态 */
.feature-item.active {
    background-color: #e8f8f5;
    transform: translateX(5px);
}

/* 淡入动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 新闻动态 */
.news {
    padding: 120px 0;
    background-color: var(--light-gray);
}

.news-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.news-card {
    display: flex;
    background-color: var(--white-color);
    overflow: hidden;
    transition: var(--transition);
}

.news-card:hover {
    transform: none;
}

.news-image {
    flex: 0 0 300px;
}

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

.news-card:hover .news-image img {
    transform: none;
}

.news-content {
    padding: var(--spacing-md);
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.news-date {
    font-size: var(--font-size-sm);
    color: var(--text-lighter);
    margin-bottom: var(--spacing-xs);
}

.news-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.news-excerpt {
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.news-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--primary-color);
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
}

.news-link:hover {
    color: var(--primary-dark);
    gap: var(--spacing-sm);
}

/* 联系我们 */
.contact {
    padding: 120px 0;
    background-color: var(--white-color);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    padding: var(--spacing-md);
    background-color: var(--light-gray);
    border-radius: var(--border-radius-lg);
    transition: var(--transition);
}

.contact-item:hover {
    background-color: #e8f8f5;
    transform: translateX(5px);
}

.contact-item i {
    font-size: var(--font-size-xl);
    color: var(--primary-color);
    margin-top: 2px;
    flex-shrink: 0;
}

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

.contact-text p {
    color: var(--text-light);
    line-height: 1.5;
}

.contact-form {
    background-color: var(--light-gray);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    border: 1px solid var(--medium-gray);
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 202, 176, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

/* 页脚 */
.footer {
    background-color: white;
    color: var(--text-color);
    padding: 80px 0 40px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    justify-items: center;
    text-align: center;
}

.footer-logo .logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    text-decoration: none;
    color: var(--text-color);
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    justify-content: center;
    width: 100%;
}

.footer-logo {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.footer-logo .logo i,
.footer-logo .logo img {
    color: var(--primary-color);
    font-size: var(--font-size-2xl);
    height: 36px;
    width: auto;
    object-fit: contain;
}

.footer-description {
    color: var(--text-light);
    font-size: var(--font-size-sm);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

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

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

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

.footer-links ul li a {
    color: var(--text-light);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: var(--transition);
}

.footer-links ul li a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--medium-gray);
    color: var(--text-light);
    font-size: var(--font-size-sm);
}

.footer-bottom a {
    color: var(--text-light);
    text-decoration: none;
    transition: none;
}

.footer-bottom a:hover {
    color: var(--text-light);
    text-decoration: none;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--white-color);
    border: none;
    border-radius: 50%;
    font-size: var(--font-size-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    z-index: 999;
}

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

.back-to-top:hover {
    background-color: var(--primary-dark);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

.fade-in-left {
    animation: fadeInLeft 0.6s ease forwards;
}

.fade-in-right {
    animation: fadeInRight 0.6s ease forwards;
}

.pulse {
    animation: pulse 2s infinite;
}

/* 轮播响应式设计 */
@media (max-width: 992px) {
    .timeline-carousel {
        padding-top: 0; /* 移除上边距 */
        padding-bottom: var(--spacing-lg);
    }
    
    .main-slide-content {
        padding: var(--spacing-lg);
    }
    
    .main-slide-title {
        font-size: var(--font-size-2xl);
    }
    
    .main-slide-description {
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-lg);
    }
    
    .thumbnail-carousel-slide {
        flex: 0 0 120px;
        width: 120px;
    }
    
    .thumbnail-slide-image {
        height: 50px;
    }
}

@media (max-width: 768px) {
    .timeline-carousel {
        padding-top: 0; /* 移除上边距 */
        padding-bottom: var(--spacing-md);
    }
    
    .main-slide-content {
        padding: var(--spacing-md);
    }
    
    .main-slide-year {
        font-size: var(--font-size-xl);
    }
    
    .main-slide-title {
        font-size: var(--font-size-xl);
    }
    
    .main-slide-description {
        font-size: var(--font-size-sm);
        margin-bottom: var(--spacing-md);
    }
    
    .carousel-controls {
        position: static;
        transform: none;
        justify-content: center;
        margin-top: var(--spacing-md);
        gap: var(--spacing-md);
    }
    
    .carousel-btn {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-base);
    }
    
    .thumbnail-carousel-container {
        padding: var(--spacing-xs);
    }
    
    .thumbnail-carousel-slide {
        flex: 0 0 100px;
        width: 100px;
        margin-right: var(--spacing-xs);
    }
    
    .thumbnail-slide-year {
        font-size: var(--font-size-xs);
    }
    
    .thumbnail-slide-title {
        font-size: 10px;
    }
    
    .thumbnail-slide-image {
        height: 40px;
    }
}

@media (max-width: 576px) {
    .timeline-carousel {
        padding-top: 0; /* 移除上边距 */
        padding-bottom: var(--spacing-sm);
    }
    
    .main-slide-content {
        padding: var(--spacing-sm);
    }
    
    .main-slide-year {
        font-size: var(--font-size-lg);
    }
    
    .main-slide-title {
        font-size: var(--font-size-lg);
    }
    
    .main-slide-description {
        font-size: var(--font-size-sm);
        line-height: 1.5;
    }
    
    .thumbnail-carousel-slide {
        flex: 0 0 90px;
        width: 90px;
    }
    
    .thumbnail-slide-image {
        height: 35px;
    }
    
    .thumbnail-slide-year {
        font-size: 10px;
        margin-bottom: 2px;
    }
    
    .thumbnail-slide-title {
        font-size: 9px;
        margin-bottom: 2px;
    }
}

@media (max-width: 480px) {
    .timeline-carousel {
        padding-top: 0; /* 移除上边距 */
        padding-bottom: var(--spacing-xs);
    }
    
    .main-slide-content {
        padding: var(--spacing-xs);
    }
    
    .main-slide-year {
        font-size: var(--font-size-base);
    }
    
    .main-slide-title {
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-xs);
    }
    
    .main-slide-description {
        font-size: 12px;
        margin-bottom: var(--spacing-sm);
    }
    
    .thumbnail-carousel-slide {
        flex: 0 0 80px;
        width: 80px;
    }
    
    .thumbnail-slide-image {
        height: 30px;
    }
    
    .thumbnail-slide-year {
        font-size: 9px;
    }
    
    .thumbnail-slide-title {
        font-size: 8px;
    }
}

/* 响应式设计 */
@media (max-width: 1024px) {
    :root {
        --font-size-3xl: 40px;
        --font-size-2xl: 28px;
    }
    
    .about-content,
    .technology-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .about-stats {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: var(--spacing-xl);
    }
    
    .technology-right {
        order: -1;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-xl);
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-3xl: 32px;
        --font-size-2xl: 24px;
        --font-size-xl: 20px;
    }
    
    .navbar-menu,
    .navbar-actions {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .banner {
        padding: 120px 0 80px;
    }
    
    .banner-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .about,
    .business,
    .technology,
    .news,
    .contact {
        padding: 80px 0;
    }
    
    .about-card {
        padding: var(--spacing-xl);
    }
    
    .about-card-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .about-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xl);
    }
    
    .business-grid,
    .news-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-3xl: 28px;
        --font-size-2xl: 22px;
        --font-size-6xl: 48px;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .banner-title {
        font-size: 28px;
    }
    
    .banner-subtitle {
        font-size: var(--font-size-base);
    }
    
    .btn-lg {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--font-size-base);
    }
    
    .about {
        padding: 60px 0;
    }
    
    .about-card {
        padding: var(--spacing-lg);
        margin-bottom: var(--spacing-xl);
    }
    
    .about-icon {
        width: 60px;
        height: 60px;
    }
    
    .about-grid {
        gap: var(--spacing-xl);
    }
    
    .about-stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .stat-card {
        padding: var(--spacing-xl);
        min-height: 160px;
    }
    
    .about-content,
    .technology-content,
    .contact-content {
        gap: var(--spacing-lg);
    }
    
    .business-card,
    .contact-form {
        padding: var(--spacing-lg);
    }
}