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

:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #f5576c;
    --text-color: #333;
    --light-gray: #f5f5f5;
    --border-color: #e0e0e0;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: #fff;
    scroll-behavior: smooth;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 顶部导航 */
.header {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(102, 126, 234, 0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo img {
    height: 50px;
}

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

.logo h1 {
    font-size: 24px;
    color: var(--primary-color);
    font-weight: 600;
}

.nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav a {
    text-decoration: none;
    color: var(--text-color);
    font-size: 16px;
    padding: 8px 15px;
    border-radius: 5px;
    transition: all 0.3s;
}

.nav a:hover,
.nav a.active {
    color: white;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
}

/* 轮播图 */
.banner {
    margin-top: -1px;
}

.banner-swiper {
    height: 500px;
}

.banner-item {
    height: 500px;
    display: flex;
    align-items: center;
    padding: 60px 0;
}

.banner-content {
    color: white;
    text-align: center;
}

.banner-content h2 {
    font-size: 48px;
    margin-bottom: 20px;
    animation: fadeInUp 0.8s;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3);
}

.banner-content p {
    font-size: 20px;
    margin-bottom: 30px;
    animation: fadeInUp 1s;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.3);
}

.btn-primary {
    display: inline-block;
    padding: 15px 40px;
    background: white;
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 30px;
    font-size: 18px;
    font-weight: 600;
    transition: all 0.3s;
    animation: fadeInUp 1.2s;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
    background: linear-gradient(135deg, white, rgba(102, 126, 234, 0.1));
}

.btn-outline {
    display: inline-block;
    padding: 12px 35px;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.btn-outline::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: left 0.3s;
    z-index: -1;
}

.btn-outline:hover {
    color: white;
    border-color: var(--secondary-color);
}

.btn-outline:hover::before {
    left: 0;
}

/* 区块标题 */
.section-title {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.section-title h2 {
    font-size: 36px;
    color: var(--text-color);
    margin-bottom: 10px;
    position: relative;
    display: inline-block;
    font-weight: 700;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.05);
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.section-title p {
    font-size: 16px;
    color: #888;
    margin-top: 20px;
    font-weight: 400;
}
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.section-title p {
    font-size: 18px;
    color: #666;
    margin-top: 15px;
}

/* 公司简介 */
.intro {
    padding: 80px 0;
    background: linear-gradient(rgba(102, 126, 234, 0.05), rgba(118, 75, 162, 0.05)), 
                url('https://images.unsplash.com/photo-1504307651254-35680f356dfd?w=1920&q=80') center/cover fixed;
    position: relative;
}

.intro::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(245, 247, 250, 0.95) 100%);
    z-index: 0;
}

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

.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.intro-text h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.intro-text p {
    font-size: 16px;
    line-height: 1.8;
    color: #666;
    margin-bottom: 20px;
}

.intro-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin: 40px 0;
}

.stat-item {
    text-align: center;
    padding: 20px;
    background: rgba(245, 245, 245, 0.8);
    border-radius: 10px;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.5);
    transition: all 0.3s;
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.15);
    background: rgba(245, 245, 245, 0.95);
}

.stat-item h4 {
    font-size: 32px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.stat-item p {
    font-size: 14px;
    color: #666;
}

.image-placeholder {
    background: #f0f0f0;
    border-radius: 10px;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.image-placeholder::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent 30%, rgba(255,255,255,0.1) 50%, transparent 70%);
    animation: shine 3s infinite;
}

@keyframes shine {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* 核心服务 */
.services {
    padding: 80px 0;
    background: linear-gradient(rgba(79, 172, 254, 0.06), rgba(0, 242, 254, 0.06)), 
                url('https://images.unsplash.com/photo-1590496793907-03de6c2a9249?w=1920&q=80') center/cover fixed;
    position: relative;
}

.services::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(245, 247, 250, 0.97) 0%, rgba(255, 255, 255, 0.97) 100%);
    z-index: 0;
}

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

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background: rgba(255, 255, 255, 0.95);
    padding: 40px 30px;
    border-radius: 10px;
    text-align: center;
    transition: all 0.3s;
    backdrop-filter: blur(10px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.15);
    background: rgba(255, 255, 255, 0.98);
}

.service-icon {
    margin: 0 auto 20px;
    width: 80px;
    height: 80px;
}

.service-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--text-color);
}

.service-card p {
    font-size: 15px;
    color: #666;
    line-height: 1.6;
    margin-bottom: 20px;
}

.learn-more {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

/* 工程案例 */
.cases {
    padding: 80px 0;
    background: linear-gradient(rgba(102, 126, 234, 0.04), rgba(79, 172, 254, 0.04)), 
                url('https://images.unsplash.com/photo-1541888946425-d81bb19240f5?w=1920&q=80') center/cover fixed;
    position: relative;
}

.cases::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.98) 0%, rgba(248, 250, 252, 0.98) 100%);
    z-index: 0;
}

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

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.case-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    transition: all 0.3s;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.case-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.2);
}

.case-image {
    height: 250px;
    overflow: hidden;
}

.case-image .image-placeholder {
    height: 100%;
    border-radius: 0;
}

.case-info {
    padding: 25px;
}

.case-info h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--text-color);
}

.case-info p {
    font-size: 14px;
    color: #666;
    margin-bottom: 10px;
}

.case-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

/* 技术优势 */
.advantages {
    padding: 80px 0;
    background: linear-gradient(rgba(118, 75, 162, 0.92), rgba(102, 126, 234, 0.92)), 
                url('https://images.unsplash.com/photo-1565191999001-551c187427bb?w=1920&q=80') center/cover fixed;
    position: relative;
}

.advantages .section-title h2,
.advantages .section-title p {
    color: white;
}

.advantages::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.85) 0%, rgba(118, 75, 162, 0.85) 50%, rgba(79, 172, 254, 0.85) 100%);
    z-index: 0;
}

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

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.advantage-item {
    background: rgba(255, 255, 255, 0.95);
    padding: 40px;
    border-radius: 10px;
    position: relative;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(102, 126, 234, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.advantage-number {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 72px;
    font-weight: 700;
    color: rgba(102, 126, 234, 0.1);
}

.advantage-item h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.advantage-item p {
    font-size: 16px;
    color: #666;
    line-height: 1.8;
}

/* 新闻动态 */
.news {
    padding: 80px 0;
    background: linear-gradient(rgba(245, 87, 108, 0.05), rgba(240, 147, 251, 0.05)), 
                url('https://images.unsplash.com/photo-1504384308090-c894fdcc538d?w=1920&q=80') center/cover fixed;
    position: relative;
}

.news::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.97) 0%, rgba(250, 252, 255, 0.97) 100%);
    z-index: 0;
}

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

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.news-card {
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(224, 224, 224, 0.5);
    border-radius: 10px;
    padding: 30px;
    transition: all 0.3s;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.news-card:hover {
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.15);
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.98);
}

.news-date {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.news-date .day {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-color);
}

.news-date .month {
    font-size: 14px;
    color: #666;
}

.news-content h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--text-color);
}

.news-content p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
    margin-bottom: 15px;
}

.news-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

/* 合作伙伴 */
.partners {
    padding: 80px 0;
    background: linear-gradient(rgba(240, 147, 251, 0.08), rgba(245, 87, 108, 0.08)), 
                url('https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?w=1920&q=80') center/cover fixed;
    position: relative;
}

.partners::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to right, rgba(255, 255, 255, 0.96) 0%, rgba(250, 250, 255, 0.96) 100%);
    z-index: 0;
}

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

.partners-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.partner-item {
    background: rgba(255, 255, 255, 0.9);
    padding: 40px 20px;
    border-radius: 10px;
    text-align: center;
    font-size: 18px;
    font-weight: 600;
    color: #666;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.4);
    transition: all 0.3s;
}

.partner-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.12);
    background: rgba(255, 255, 255, 0.95);
}

/* 页脚 */
.footer {
    background: linear-gradient(135deg, rgba(44, 62, 80, 0.95), rgba(52, 73, 94, 0.95)), 
                url('https://images.unsplash.com/photo-1497366216548-37526070297c?w=1920&q=80') center/cover;
    color: white;
    padding: 60px 0 20px;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(44, 62, 80, 0.92) 0%, rgba(52, 73, 94, 0.92) 100%);
    z-index: 0;
}

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

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 20px;
    margin-bottom: 20px;
}

.footer-section p {
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 10px;
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: #bbb;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid #444;
    padding-top: 20px;
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: #999;
}

/* 页面Banner */
.page-banner {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.9) 0%, rgba(118, 75, 162, 0.9) 100%), 
                url('https://images.unsplash.com/photo-1486312338219-ce68d2c6f44d?w=1920&q=80') center/cover;
    padding: 80px 0;
    text-align: center;
    color: white;
    position: relative;
}

.page-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.85) 0%, rgba(118, 75, 162, 0.88) 100%);
    z-index: 0;
}

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

.page-banner h1 {
    font-size: 48px;
    margin-bottom: 10px;
    text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);
}

.page-banner p {
    font-size: 20px;
    opacity: 0.9;
    text-shadow: 1px 1px 6px rgba(0, 0, 0, 0.3);
}

/* 面包屑导航 */
.breadcrumb {
    padding: 20px 0;
    background: linear-gradient(135deg, rgba(245, 245, 245, 0.8), rgba(250, 250, 250, 0.8));
    font-size: 14px;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(224, 224, 224, 0.5);
}

.breadcrumb a {
    color: #666;
    text-decoration: none;
}

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

/* 文本居中 */
.text-center {
    text-align: center;
}

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

/* 添加渐变动画 */
@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* 添加光晕效果动画 */
@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(102, 126, 234, 0.3);
    }
    50% {
        box-shadow: 0 0 30px rgba(102, 126, 234, 0.5);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .intro-content,
    .services-grid,
    .cases-grid,
    .advantages-grid,
    .news-grid,
    .partners-grid,
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .banner-content h2 {
        font-size: 32px;
    }
    
    .intro-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 联系页面样式 */
.contact-info {
    padding: 60px 0;
    background: linear-gradient(rgba(102, 126, 234, 0.04), rgba(118, 75, 162, 0.04)), 
                url('https://images.unsplash.com/photo-1497366811353-6870744d04b2?w=1920&q=80') center/cover fixed;
    position: relative;
}

.contact-info::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.96) 0%, rgba(248, 250, 252, 0.96) 100%);
    z-index: 0;
}

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

.contact-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.contact-card {
    text-align: center;
    padding: 40px 20px;
    background: rgba(245, 245, 245, 0.85);
    border-radius: 10px;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.5);
    transition: all 0.3s;
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.12);
    background: rgba(245, 245, 245, 0.95);
}

.contact-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.contact-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
}

.contact-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
}

.contact-form-section {
    padding: 60px 0;
    background: linear-gradient(rgba(79, 172, 254, 0.05), rgba(0, 242, 254, 0.05)), 
                url('https://images.unsplash.com/photo-1423666639041-f56000c27a9a?w=1920&q=80') center/cover fixed;
    position: relative;
}

.contact-form-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(245, 247, 250, 0.96) 0%, rgba(255, 255, 255, 0.96) 100%);
    z-index: 0;
}

.contact-form-section .container {
    position: relative;
    z-index: 1;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
}

.form-intro h2 {
    font-size: 32px;
    margin-bottom: 20px;
}

.contact-form {
    background: rgba(255, 255, 255, 0.95);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

.required {
    color: red;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 14px;
    font-family: inherit;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.submit-btn {
    width: 100%;
    padding: 15px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

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

/* CTA 行动号召区块 */
.cta-section {
    padding: 80px 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.95) 0%, rgba(118, 75, 162, 0.95) 100%),
                url('https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?w=1920&q=80') center/cover fixed;
    position: relative;
    text-align: center;
    color: white;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.92) 0%, rgba(118, 75, 162, 0.92) 100%);
    z-index: 0;
}

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

.cta-section h2 {
    font-size: 42px;
    margin-bottom: 20px;
    font-weight: 700;
    text-shadow: 2px 2px 8px rgba(0,0,0,0.2);
}

.cta-section p {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.95;
    font-weight: 400;
    text-shadow: 1px 1px 4px rgba(0,0,0,0.15);
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.cta-section .btn-primary {
    background: white;
    color: var(--primary-color);
    font-weight: 600;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.cta-section .btn-primary:hover {
    background: rgba(255, 255, 255, 0.95);
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.25);
}

.cta-section .btn-outline {
    border-color: white;
    color: white;
    font-weight: 600;
}

.cta-section .btn-outline::before {
    background: rgba(255, 255, 255, 0.15);
}

.cta-section .btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: white;
    color: white;
}

.branches {
    padding: 60px 0;
    background: linear-gradient(rgba(240, 147, 251, 0.04), rgba(245, 87, 108, 0.04)), 
                url('https://images.unsplash.com/photo-1497366754035-f200968a6e72?w=1920&q=80') center/cover fixed;
    position: relative;
}

.branches::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to right, rgba(255, 255, 255, 0.97) 0%, rgba(250, 252, 255, 0.97) 100%);
    z-index: 0;
}

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

.branches-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.branch-card {
    padding: 30px;
    background: rgba(245, 245, 245, 0.85);
    border-radius: 10px;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.5);
    transition: all 0.3s;
}

.branch-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.12);
    background: rgba(245, 245, 245, 0.95);
}

.branch-card h3 {
    font-size: 20px;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.branch-card hr {
    margin: 15px 0;
    border: none;
    border-top: 1px solid var(--border-color);
}

@media (max-width: 768px) {
    .contact-grid,
    .contact-content,
    .branches-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   栏目页专用样式（关于我们、服务项目等）
   ======================================== */

/* 关于我们页面 */
.about-detail {
    padding: 80px 0;
    background: linear-gradient(rgba(102, 126, 234, 0.04), rgba(118, 75, 162, 0.04)), 
                url('https://images.unsplash.com/photo-1504307651254-35680f356dfd?w=1920&q=80') center/cover fixed;
    position: relative;
}

.about-detail::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.97) 0%, rgba(248, 250, 252, 0.97) 100%);
    z-index: 0;
}

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

.company-intro,
.company-culture,
.company-strength,
.company-history {
    margin-bottom: 80px;
}

.company-intro h2,
.company-culture h2,
.company-strength h2,
.company-history h2 {
    font-size: 32px;
    color: var(--text-color);
    margin-bottom: 40px;
    padding-left: 20px;
    border-left: 5px solid var(--primary-color);
}

.intro-content-flex {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: start;
}

.intro-text-detail {
    line-height: 1.8;
}

.intro-text-detail p {
    font-size: 16px;
    color: #666;
    margin-bottom: 20px;
    text-align: justify;
}

.intro-image-detail {
    position: sticky;
    top: 100px;
}

/* 企业文化卡片 */
.culture-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.culture-item {
    background: rgba(255, 255, 255, 0.9);
    padding: 40px;
    border-radius: 10px;
    backdrop-filter: blur(10px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-left: 4px solid var(--primary-color);
    transition: all 0.3s;
}

.culture-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.15);
    background: rgba(255, 255, 255, 0.95);
}

.culture-item h3 {
    font-size: 22px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.culture-item p {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
}

/* 企业实力标签页 */
.strength-tabs {
    background: rgba(255, 255, 255, 0.9);
    padding: 40px;
    border-radius: 10px;
    backdrop-filter: blur(10px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.tab-buttons {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 12px 30px;
    border: 2px solid var(--primary-color);
    background: transparent;
    color: var(--primary-color);
    border-radius: 25px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.tab-btn:hover {
    background: rgba(102, 126, 234, 0.1);
}

.tab-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-color: transparent;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
    animation: fadeInUp 0.5s;
}

.strength-list {
    list-style: none;
    padding: 0;
}

.strength-list li {
    padding: 15px 20px;
    margin-bottom: 10px;
    background: rgba(245, 247, 250, 0.8);
    border-radius: 8px;
    font-size: 16px;
    color: #666;
    border-left: 3px solid var(--primary-color);
    transition: all 0.3s;
}

.strength-list li:hover {
    background: rgba(102, 126, 234, 0.1);
    transform: translateX(5px);
}

/* 发展历程 */
.timeline {
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
    padding: 25px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 10px;
    backdrop-filter: blur(10px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.5);
    transition: all 0.3s;
}

.timeline-item:hover {
    transform: translateX(10px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.15);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -47px;
    top: 30px;
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: var(--primary-color);
    border: 3px solid white;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.3);
}

.timeline-year {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.timeline-content {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
}

/* 服务详情页 */
.services-detail {
    padding: 60px 0;
    background: linear-gradient(rgba(79, 172, 254, 0.02), rgba(0, 242, 254, 0.02)), 
                url('https://images.unsplash.com/photo-1590496793907-03de6c2a9249?w=1920&q=80') center/cover fixed;
    position: relative;
}

.services-detail::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.97) 0%, rgba(250, 252, 255, 0.97) 100%);
    z-index: 0;
}

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

.service-detail {
    margin-bottom: 80px;
    background: rgba(255, 255, 255, 0.98);
    padding: 50px;
    border-radius: 15px;
    backdrop-filter: blur(15px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.9);
    transition: all 0.3s;
}

.service-detail:hover {
    box-shadow: 0 15px 50px rgba(102, 126, 234, 0.12);
    transform: translateY(-3px);
}

.service-header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 2px solid var(--light-gray);
}

.service-header h2 {
    font-size: 36px;
    color: #1a1a1a;
    margin-bottom: 15px;
    font-weight: 700;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.08);
}

.service-header p {
    font-size: 18px;
    color: #666;
    font-weight: 500;
}

.service-content-flex {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 50px;
    align-items: start;
}

.service-content-flex.reverse {
    grid-template-columns: 1fr 1.2fr;
}

.service-content-flex.reverse .service-text {
    order: 2;
}

.service-content-flex.reverse .service-image {
    order: 1;
}

.service-text h3 {
    font-size: 24px;
    color: #1a1a1a;
    margin-top: 30px;
    margin-bottom: 15px;
    font-weight: 700;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.06);
}

.service-text h3:first-child {
    margin-top: 0;
}

.service-text p {
    font-size: 16px;
    color: #2d2d2d;
    line-height: 1.95;
    margin-bottom: 20px;
    text-align: justify;
    font-weight: 500;
    text-shadow: 0.5px 0.5px 1px rgba(0,0,0,0.03);
}

.feature-list {
    list-style: none;
    padding-left: 0;
    margin: 20px 0;
}

.feature-list li {
    padding: 12px 0;
    padding-left: 25px;
    position: relative;
    font-size: 16px;
    color: #2d2d2d;
    line-height: 1.85;
    font-weight: 500;
    text-shadow: 0.5px 0.5px 1px rgba(0,0,0,0.03);
}

.feature-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
    font-size: 18px;
}

.feature-list li strong {
    color: #1a1a1a;
    font-weight: 700;
}

.service-image {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.epc-service {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.08) 0%, rgba(118, 75, 162, 0.08) 100%);
    padding: 60px 50px;
    border-radius: 15px;
    margin-top: 40px;
}

.epc-service h2 {
    font-size: 36px;
    color: #1a1a1a;
    text-align: center;
    margin-bottom: 15px;
    font-weight: 700;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.08);
}

.epc-service .subtitle {
    font-size: 18px;
    color: #555;
    text-align: center;
    margin-bottom: 30px;
    font-weight: 500;
}

.epc-content p {
    font-size: 16px;
    color: #2d2d2d;
    line-height: 1.95;
    margin-bottom: 40px;
    text-align: justify;
    font-weight: 500;
    text-shadow: 0.5px 0.5px 1px rgba(0,0,0,0.03);
}

.epc-advantages h3,
.epc-process h3 {
    font-size: 26px;
    color: #1a1a1a;
    margin-bottom: 30px;
    margin-top: 40px;
    font-weight: 700;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.06);
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
    margin-bottom: 40px;
}

.advantage-box {
    background: rgba(255, 255, 255, 0.98);
    padding: 30px;
    border-radius: 10px;
    border-left: 4px solid var(--primary-color);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    backdrop-filter: blur(10px);
}

.advantage-box h4 {
    font-size: 28px;
    color: var(--primary-color);
    margin-bottom: 15px;
    font-weight: 700;
}

.advantage-box p {
    font-size: 16px;
    color: #2d2d2d;
    line-height: 1.85;
    font-weight: 500;
    text-shadow: 0.5px 0.5px 1px rgba(0,0,0,0.03);
}

.process-steps {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
}

.step {
    background: rgba(255, 255, 255, 0.98);
    padding: 25px 20px;
    border-radius: 10px;
    text-align: center;
    flex: 1;
    min-width: 120px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    backdrop-filter: blur(10px);
}

.step-num {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    font-size: 20px;
    font-weight: 700;
    box-shadow: 0 4px 10px rgba(102, 126, 234, 0.3);
}

.step h4 {
    font-size: 18px;
    color: #1a1a1a;
    margin-bottom: 10px;
    font-weight: 700;
}

.step p {
    font-size: 14px;
    color: #555;
    line-height: 1.7;
    font-weight: 500;
}

.step-arrow {
    font-size: 28px;
    color: var(--primary-color);
    font-weight: 700;
}

.service-section {
    margin-bottom: 60px;
}

.service-section h2 {
    font-size: 32px;
    color: var(--text-color);
    margin-bottom: 30px;
    padding-left: 20px;
    border-left: 5px solid var(--primary-color);
}

.service-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.service-list-item {
    background: rgba(255, 255, 255, 0.9);
    padding: 30px;
    border-radius: 10px;
    backdrop-filter: blur(10px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.5);
    transition: all 0.3s;
}

.service-list-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.15);
}

.service-list-item h3 {
    font-size: 20px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.service-list-item p,
.service-list-item ul {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
}

.service-list-item ul {
    list-style: none;
    padding-left: 0;
}

.service-list-item ul li {
    padding: 8px 0;
    padding-left: 20px;
    position: relative;
}

.service-list-item ul li::before {
    content: '●';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* 案例列表页 */
.cases-filter {
    padding: 40px 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--light-gray);
}

.filter-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 12px 30px;
    border: 2px solid var(--primary-color);
    background: transparent;
    color: var(--primary-color);
    border-radius: 25px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
    transform: translateY(-2px);
}

.cases-list {
    padding: 60px 0;
    background: linear-gradient(rgba(102, 126, 234, 0.02), rgba(79, 172, 254, 0.02)), 
                url('https://images.unsplash.com/photo-1541888946425-d81bb19240f5?w=1920&q=80') center/cover fixed;
    position: relative;
}

.cases-list::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.97) 0%, rgba(250, 252, 255, 0.97) 100%);
    z-index: 0;
}

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

.case-detail-card {
    margin-bottom: 60px;
    background: rgba(255, 255, 255, 0.98);
    padding: 50px;
    border-radius: 15px;
    backdrop-filter: blur(15px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.9);
    transition: all 0.3s;
}

.case-detail-card:hover {
    box-shadow: 0 15px 50px rgba(102, 126, 234, 0.12);
    transform: translateY(-3px);
}

.case-detail-header {
    margin-bottom: 30px;
}

.case-detail-header h2 {
    font-size: 32px;
    color: #1a1a1a;
    margin-bottom: 15px;
    font-weight: 700;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.08);
}

.case-tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.case-tags .tag {
    display: inline-block;
    padding: 6px 18px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    box-shadow: 0 3px 10px rgba(102, 126, 234, 0.25);
}

.case-detail-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.case-detail-image {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.case-detail-info h3 {
    font-size: 22px;
    color: #1a1a1a;
    margin-top: 25px;
    margin-bottom: 15px;
    font-weight: 700;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.06);
}

.case-detail-info h3:first-child {
    margin-top: 0;
}

.case-detail-info p {
    font-size: 16px;
    color: #2d2d2d;
    line-height: 1.95;
    margin-bottom: 20px;
    text-align: justify;
    font-weight: 500;
    text-shadow: 0.5px 0.5px 1px rgba(0,0,0,0.03);
}

.info-list {
    list-style: none;
    padding-left: 0;
    margin: 20px 0;
}

.info-list li {
    padding: 10px 0;
    font-size: 16px;
    color: #2d2d2d;
    line-height: 1.85;
    border-bottom: 1px dashed var(--light-gray);
    font-weight: 500;
    text-shadow: 0.5px 0.5px 1px rgba(0,0,0,0.03);
}

.info-list li:last-child {
    border-bottom: none;
}

.info-list li strong {
    color: #1a1a1a;
    font-weight: 700;
    min-width: 120px;
    display: inline-block;
}

.case-summary {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.08) 0%, rgba(118, 75, 162, 0.08) 100%);
    padding: 50px;
    border-radius: 15px;
    margin-top: 40px;
}

.case-summary h2 {
    font-size: 32px;
    color: #1a1a1a;
    text-align: center;
    margin-bottom: 40px;
    font-weight: 700;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.08);
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.summary-item {
    background: rgba(255, 255, 255, 0.98);
    padding: 30px 25px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    backdrop-filter: blur(10px);
    transition: all 0.3s;
}

.summary-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.15);
}

.summary-item h3 {
    font-size: 20px;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-weight: 700;
}

.summary-item p {
    font-size: 15px;
    color: #555;
    line-height: 1.7;
    font-weight: 500;
}

.case-gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin: 40px 0;
}

.case-gallery img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s;
}

.case-gallery img:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.2);
}

/* 技术优势页 */
.tech-intro {
    padding: 60px 0;
    background: linear-gradient(rgba(118, 75, 162, 0.02), rgba(102, 126, 234, 0.02)), 
                url('https://images.unsplash.com/photo-1565191999001-551c187427bb?w=1920&q=80') center/cover fixed;
    position: relative;
}

.tech-intro::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.97) 0%, rgba(250, 252, 255, 0.97) 100%);
    z-index: 0;
}

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

.tech-intro-content {
    max-width: 900px;
    margin: 0 auto;
}

.tech-intro-content p {
    font-size: 16px;
    color: #2d2d2d;
    line-height: 1.95;
    margin-bottom: 20px;
    text-align: justify;
    font-weight: 500;
    text-shadow: 0.5px 0.5px 1px rgba(0,0,0,0.03);
}

.tech-fields {
    padding: 60px 0;
    background: linear-gradient(rgba(118, 75, 162, 0.02), rgba(102, 126, 234, 0.02)), 
                url('https://images.unsplash.com/photo-1565191999001-551c187427bb?w=1920&q=80') center/cover fixed;
    position: relative;
}

.tech-fields::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.97) 0%, rgba(250, 252, 255, 0.97) 100%);
    z-index: 0;
}

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

.tech-field {
    margin-bottom: 60px;
    background: rgba(255, 255, 255, 0.98);
    padding: 50px;
    border-radius: 15px;
    backdrop-filter: blur(15px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.9);
    transition: all 0.3s;
}

.tech-field:hover {
    box-shadow: 0 15px 50px rgba(102, 126, 234, 0.12);
    transform: translateY(-3px);
}

.field-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 40px;
    padding-bottom: 25px;
    border-bottom: 2px solid var(--light-gray);
}

.field-icon {
    width: 70px;
    height: 70px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
}

.field-header h2 {
    font-size: 32px;
    color: #1a1a1a;
    margin: 0;
    font-weight: 700;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.08);
}

.field-content h3 {
    font-size: 26px;
    color: #1a1a1a;
    margin-top: 30px;
    margin-bottom: 25px;
    font-weight: 700;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.06);
}

.field-content h3:first-child {
    margin-top: 0;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
    margin: 30px 0;
}

.tech-item {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(250, 252, 255, 0.98) 100%);
    padding: 30px;
    border-radius: 10px;
    border-left: 4px solid var(--primary-color);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    backdrop-filter: blur(10px);
    transition: all 0.3s;
}

.tech-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.12);
}

.tech-item h4 {
    font-size: 20px;
    color: var(--primary-color);
    margin-bottom: 15px;
    font-weight: 700;
}

.tech-item p {
    font-size: 15px;
    color: #2d2d2d;
    line-height: 1.85;
    margin-bottom: 15px;
    font-weight: 500;
    text-shadow: 0.5px 0.5px 1px rgba(0,0,0,0.03);
}

.tech-features {
    list-style: none;
    padding-left: 0;
    margin: 15px 0 0 0;
}

.tech-features li {
    padding: 8px 0;
    font-size: 15px;
    color: #2d2d2d;
    line-height: 1.75;
    font-weight: 500;
    text-shadow: 0.5px 0.5px 1px rgba(0,0,0,0.03);
}

.achievement-list {
    list-style: none;
    padding-left: 0;
    margin: 20px 0;
}

.achievement-list li {
    padding: 12px 0;
    padding-left: 30px;
    position: relative;
    font-size: 16px;
    color: #2d2d2d;
    line-height: 1.85;
    border-bottom: 1px dashed var(--light-gray);
    font-weight: 500;
    text-shadow: 0.5px 0.5px 1px rgba(0,0,0,0.03);
}

.achievement-list li:last-child {
    border-bottom: none;
}

.achievement-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
    font-size: 20px;
}

.indicator-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    margin: 30px 0;
}

.indicator-item {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.10) 0%, rgba(118, 75, 162, 0.10) 100%);
    padding: 30px 20px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    backdrop-filter: blur(10px);
}

.indicator-item h4 {
    font-size: 16px;
    color: #555;
    margin-bottom: 15px;
    font-weight: 600;
}

.indicator-value {
    font-size: 28px;
    color: var(--primary-color);
    font-weight: 700;
    margin-bottom: 10px;
}

.indicator-standard {
    font-size: 14px;
    color: #666;
    font-weight: 500;
}

.tech-achievements {
    padding: 60px 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.08) 0%, rgba(118, 75, 162, 0.08) 100%);
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.achievement-card {
    background: rgba(255, 255, 255, 0.98);
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
    backdrop-filter: blur(10px);
    transition: all 0.3s;
}

.achievement-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.15);
}

.achievement-card h3 {
    font-size: 42px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 15px;
    font-weight: 700;
}

.achievement-card p {
    font-size: 18px;
    color: #1a1a1a;
    margin-bottom: 10px;
    font-weight: 600;
}

.achievement-card span {
    font-size: 14px;
    color: #666;
    font-weight: 500;
}

.tech-cooperation {
    padding: 60px 0;
    background: rgba(255, 255, 255, 0.98);
}

.cooperation-content {
    margin-top: 40px;
}

.cooperation-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
    margin-bottom: 40px;
}

.cooperation-item {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.07) 0%, rgba(118, 75, 162, 0.07) 100%);
    padding: 30px;
    border-radius: 10px;
    border-left: 4px solid var(--primary-color);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s;
}

.cooperation-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.12);
}

.cooperation-item h3 {
    font-size: 20px;
    color: #1a1a1a;
    margin-bottom: 12px;
    font-weight: 700;
}

.cooperation-item p {
    font-size: 15px;
    color: #555;
    line-height: 1.7;
    font-weight: 500;
}

.cooperation-desc {
    background: rgba(255, 255, 255, 0.98);
    padding: 35px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.cooperation-desc p {
    font-size: 16px;
    color: #2d2d2d;
    line-height: 1.95;
    text-align: justify;
    font-weight: 500;
    text-shadow: 0.5px 0.5px 1px rgba(0,0,0,0.03);
}

.tech-feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin: 40px 0;
}

.tech-feature-item {
    background: rgba(255, 255, 255, 0.9);
    padding: 35px;
    border-radius: 10px;
    backdrop-filter: blur(10px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-top: 4px solid var(--primary-color);
    transition: all 0.3s;
}

.tech-feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.15);
}

.tech-feature-item h3 {
    font-size: 22px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.tech-feature-item p {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
}

/* 新闻列表页 */
.news-categories {
    padding: 40px 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--light-gray);
    position: sticky;
    top: 80px;
    z-index: 100;
}

.category-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.category-btn {
    padding: 12px 30px;
    border: 2px solid var(--primary-color);
    background: transparent;
    color: var(--primary-color);
    border-radius: 25px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s;
}

.category-btn:hover,
.category-btn.active {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
    transform: translateY(-2px);
}

.news-list-section {
    padding: 60px 0;
    background: linear-gradient(rgba(245, 87, 108, 0.02), rgba(240, 147, 251, 0.02)), 
                url('https://images.unsplash.com/photo-1504384308090-c894fdcc538d?w=1920&q=80') center/cover fixed;
    position: relative;
    min-height: 80vh;
}

.news-list-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.97) 0%, rgba(250, 252, 255, 0.97) 100%);
    z-index: 0;
}

.news-list-section .container {
    position: relative;
    z-index: 1;
}

.news-list {
    display: grid;
    gap: 40px;
}

.news-article {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 30px;
    background: rgba(255, 255, 255, 0.98);
    padding: 40px;
    border-radius: 15px;
    backdrop-filter: blur(15px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.9);
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.news-article:hover {
    box-shadow: 0 15px 45px rgba(102, 126, 234, 0.12);
    transform: translateY(-5px);
}

.news-article::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
    opacity: 0;
    transition: opacity 0.3s;
}

.news-article:hover::before {
    opacity: 1;
}

.news-article-date {
    text-align: center;
    padding: 20px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border-radius: 10px;
    min-height: 120px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border: 2px solid rgba(102, 126, 234, 0.2);
}

.date-day {
    display: block;
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: 8px;
}

.date-month {
    display: block;
    font-size: 14px;
    color: #666;
    font-weight: 600;
}

.news-article-content {
    flex: 1;
}

.news-article-content h2 {
    font-size: 26px;
    color: #1a1a1a;
    margin-bottom: 15px;
    line-height: 1.4;
    font-weight: 700;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.05);
    transition: color 0.3s;
}

.news-article:hover .news-article-content h2 {
    color: var(--primary-color);
}

.news-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px dashed var(--light-gray);
}

.news-category {
    display: inline-flex;
    align-items: center;
    padding: 4px 15px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 15px;
    font-size: 13px;
    font-weight: 600;
}

.news-author {
    font-size: 14px;
    color: #888;
    display: flex;
    align-items: center;
}

.news-excerpt {
    margin-bottom: 20px;
}

.news-excerpt p {
    font-size: 16px;
    color: #2d2d2d;
    line-height: 1.9;
    text-align: justify;
    font-weight: 500;
    text-shadow: 0.5px 0.5px 1px rgba(0,0,0,0.03);
}

.news-full-content {
    display: none;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 2px solid var(--light-gray);
}

.news-full-content.show {
    display: block;
}

.news-full-content h3 {
    font-size: 22px;
    color: #1a1a1a;
    margin-top: 30px;
    margin-bottom: 15px;
    font-weight: 700;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.06);
}

.news-full-content h3:first-child {
    margin-top: 0;
}

.news-full-content p {
    font-size: 16px;
    color: #2d2d2d;
    line-height: 1.9;
    margin-bottom: 20px;
    text-align: justify;
    font-weight: 500;
    text-shadow: 0.5px 0.5px 1px rgba(0,0,0,0.03);
}

.news-full-content ul {
    list-style: none;
    padding-left: 0;
    margin: 20px 0;
}

.news-full-content ul li {
    padding: 10px 0;
    padding-left: 25px;
    position: relative;
    font-size: 16px;
    color: #2d2d2d;
    line-height: 1.85;
    font-weight: 500;
    text-shadow: 0.5px 0.5px 1px rgba(0,0,0,0.03);
}

.news-full-content ul li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
    font-size: 18px;
}

.news-full-content ul li strong {
    color: #1a1a1a;
    font-weight: 700;
}

.read-more-btn {
    padding: 10px 30px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 25px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.read-more-btn:hover {
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
    transform: translateY(-2px);
}

.read-more-btn.expanded {
    background: linear-gradient(135deg, #888, #666);
}

.read-more-btn.expanded::after {
    content: ' ▲';
}

.read-more-btn:not(.expanded)::after {
    content: ' ▼';
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 60px;
    padding-top: 40px;
    border-top: 2px solid var(--light-gray);
}

.page-btn {
    padding: 10px 20px;
    border: 2px solid var(--primary-color);
    background: transparent;
    color: var(--primary-color);
    border-radius: 8px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 600;
    transition: all 0.3s;
    min-width: 50px;
}

.page-btn:hover,
.page-btn.active {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.page-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* 新闻详情页 */
.news-detail {
    padding: 80px 0;
    background: linear-gradient(rgba(245, 87, 108, 0.04), rgba(240, 147, 251, 0.04)), 
                url('https://images.unsplash.com/photo-1504384308090-c894fdcc538d?w=1920&q=80') center/cover fixed;
    position: relative;
}

.news-detail::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(250, 252, 255, 0.98) 100%);
    z-index: 0;
}

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

.news-article {
    max-width: 900px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.95);
    padding: 60px;
    border-radius: 10px;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.news-article h1 {
    font-size: 36px;
    color: var(--text-color);
    margin-bottom: 20px;
    line-height: 1.4;
}

.news-meta {
    color: #999;
    font-size: 14px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--light-gray);
}

.news-content {
    font-size: 16px;
    color: #666;
    line-height: 2;
}

.news-content p {
    margin-bottom: 20px;
    text-align: justify;
}

.news-content h2,
.news-content h3 {
    color: var(--text-color);
    margin: 30px 0 20px;
}

.news-content img {
    width: 100%;
    border-radius: 10px;
    margin: 30px 0;
}

/* 响应式优化 - 栏目页 */
@media (max-width: 768px) {
    .intro-content-flex,
    .culture-grid,
    .service-content-flex,
    .service-content-flex.reverse,
    .case-detail-content,
    .tech-grid,
    .advantage-grid,
    .indicator-grid,
    .achievements-grid,
    .summary-grid,
    .cooperation-list {
        grid-template-columns: 1fr !important;
    }
    
    .service-content-flex.reverse .service-text,
    .service-content-flex.reverse .service-image {
        order: 0;
    }
    
    .tab-buttons {
        flex-direction: column;
    }
    
    .tab-btn {
        width: 100%;
    }
    
    .timeline {
        padding-left: 30px;
    }
    
    .timeline-item::before {
        left: -37px;
    }
    
    .news-article,
    .service-detail,
    .case-detail-card,
    .tech-field,
    .epc-service,
    .case-summary {
        padding: 30px 20px;
    }
    
    .service-header h2,
    .case-detail-header h2,
    .field-header h2,
    .epc-service h2,
    .case-summary h2 {
        font-size: 26px;
    }
    
    .field-header {
        flex-direction: column;
        text-align: center;
    }
    
    .process-steps {
        flex-direction: column;
    }
    
    .step-arrow {
        transform: rotate(90deg);
    }
    
    .about-detail,
    .services-detail,
    .cases-list,
    .tech-intro,
    .tech-fields {
        padding: 40px 0;
    }
    
    /* 新闻页移动端适配 */
    .news-categories {
        top: 60px;
        padding: 20px 0;
    }
    
    .category-buttons {
        gap: 10px;
    }
    
    .category-btn {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    .news-list-section {
        padding: 40px 0;
    }
    
    .news-article {
        grid-template-columns: 1fr;
        padding: 25px 20px;
        gap: 20px;
    }
    
    .news-article-date {
        min-height: auto;
        padding: 15px;
        width: 100%;
        flex-direction: row;
        justify-content: center;
        gap: 15px;
    }
    
    .date-day {
        font-size: 36px;
        margin-bottom: 0;
    }
    
    .date-month {
        font-size: 13px;
        align-self: flex-end;
        padding-bottom: 5px;
    }
    
    .news-article-content h2 {
        font-size: 22px;
    }
    
    .news-meta {
        flex-direction: column;
        gap: 10px;
    }
    
    .pagination {
        margin-top: 40px;
        padding-top: 30px;
        flex-wrap: wrap;
    }
    
    .page-btn {
        padding: 8px 15px;
        font-size: 14px;
        min-width: 40px;
    }
    
    .cta-section {
        padding: 60px 0;
    }
    
    .cta-section h2 {
        font-size: 32px;
    }
    
    .cta-section p {
        font-size: 18px;
    }
}