/* ============================================
   北京恒科博达信息技术有限公司 企业官网
   主样式表 - Main Stylesheet
   风格：简约大气
   ============================================ */

/* ===== 基础重置 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: "Microsoft YaHei", "微软雅黑", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    font-size: 14px;
    color: #333;
    line-height: 1.8;
    background: #fff;
    overflow-x: hidden;
}
a { text-decoration: none; color: #333; transition: all .3s ease; }
a:hover { color: #1a6ec7; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
.container { width: 1200px; max-width: 100%; margin: 0 auto; padding: 0 15px; }

/* ===== 主题色 ===== */
:root {
    --primary: #1a6ec7;
    --primary-dark: #155a9e;
    --primary-light: #e8f2fc;
    --accent: #f5a623;
    --text-dark: #2c3e50;
    --text-gray: #777;
    --bg-gray: #f5f7fa;
    --bg-light: #fafbfc;
    --border: #e5e8ed;
}

/* ===== 顶部工具栏 ===== */
.top-bar {
    background: #1a2a3a;
    color: #b0c4de;
    font-size: 12px;
    padding: 6px 0;
}
.top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.top-bar-left span { margin-right: 20px; }
.top-bar-left i, .top-bar-right i { margin-right: 4px; color: var(--primary); }

/* ===== 导航 ===== */
.header {
    background: #fff;
    box-shadow: 0 2px 12px rgba(0,0,0,.06);
    position: sticky;
    top: 0;
    z-index: 999;
    transition: box-shadow .3s;
}
.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}
.logo a { display: flex; align-items: center; }
.logo-text { display: flex; flex-direction: column; }
.logo-zh {
    font-size: 26px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 2px;
}
.logo-en {
    font-size: 11px;
    color: var(--text-gray);
    letter-spacing: 3px;
    text-transform: uppercase;
}
.nav ul { display: flex; }
.nav ul li { position: relative; padding: 0 18px; }
.nav ul li a {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 15px;
    color: var(--text-dark);
    padding: 30px 0;
    font-weight: 500;
}
.nav ul li a span {
    font-size: 11px;
    color: #aaa;
    text-transform: uppercase;
    margin-top: 2px;
}
.nav ul li::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 3px;
    background: var(--primary);
    transition: all .3s;
    transform: translateX(-50%);
}
.nav ul li.active::after,
.nav ul li:hover::after { width: 70%; }
.nav ul li.active a { color: var(--primary); }
.nav ul li:hover a { color: var(--primary); }

/* ===== 移动端菜单 ===== */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}
.mobile-toggle span {
    width: 26px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: .3s;
}

/* ===== 通用标题 ===== */
.section { padding: 70px 0; }
.section-gray { background: var(--bg-gray); }
.section-title {
    text-align: center;
    margin-bottom: 50px;
}
.section-title h2 {
    font-size: 32px;
    color: var(--text-dark);
    font-weight: 700;
    margin-bottom: 8px;
}
.section-title h2 span { color: var(--primary); }
.section-title p {
    font-size: 14px;
    color: var(--text-gray);
    text-transform: uppercase;
    letter-spacing: 2px;
}
.section-title .line {
    width: 50px;
    height: 3px;
    background: var(--primary);
    margin: 12px auto 0;
    border-radius: 2px;
}

/* ===== 首页Banner ===== */
.banner {
    position: relative;
    height: 520px;
    overflow: hidden;
    background: linear-gradient(135deg, #0d3a6b 0%, #1a6ec7 100%);
}
.banner-slides { position: relative; width: 100%; height: 100%; }
.banner-slide {
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    display: flex;
    align-items: center;
}
.banner-slide.active { opacity: 1; }
.banner-slide:nth-child(1) { background: linear-gradient(135deg, #0d3a6b 0%, #1a6ec7 60%, #2d8fd4 100%); }
.banner-slide:nth-child(2) { background: linear-gradient(135deg, #1a2a3a 0%, #155a9e 60%, #1a6ec7 100%); }
.banner-slide:nth-child(3) { background: linear-gradient(135deg, #0d2e5a 0%, #1a5ca8 60%, #2d7fd4 100%); }
.banner-slide .container { color: #fff; }
.banner-slide h1 {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.4;
    opacity: 0;
    transform: translateY(30px);
    transition: all .8s .3s;
}
.banner-slide.active h1 { opacity: 1; transform: translateY(0); }
.banner-slide .banner-subtitle {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.6;
    opacity: 0;
    transform: translateY(30px);
    transition: all .8s .5s;
}
.banner-slide.active .banner-subtitle { opacity: .7; transform: translateY(0); }
.banner-slide .banner-desc {
    font-size: 16px;
    margin-bottom: 35px;
    max-width: 600px;
    opacity: 0;
    transform: translateY(30px);
    transition: all .8s .7s;
}
.banner-slide.active .banner-desc { opacity: .8; transform: translateY(0); }
.banner-slide .banner-btn {
    display: inline-block;
    padding: 12px 36px;
    background: var(--accent);
    color: #fff;
    font-size: 15px;
    border-radius: 30px;
    font-weight: 500;
    opacity: 0;
    transform: translateY(30px);
    transition: all .8s .9s;
}
.banner-slide.active .banner-btn { opacity: 1; transform: translateY(0); }
.banner-slide .banner-btn:hover {
    background: #fff;
    color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0,0,0,.2);
}

/* Banner装饰圆 */
.banner::before {
    content: '';
    position: absolute;
    right: -100px;
    top: -100px;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: rgba(255,255,255,.05);
}
.banner::after {
    content: '';
    position: absolute;
    right: 50px;
    bottom: -150px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: rgba(255,255,255,.03);
}

/* Banner圆点 */
.banner-dots {
    position: absolute;
    bottom: 25px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}
.banner-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,.4);
    cursor: pointer;
    transition: .3s;
}
.banner-dot.active { background: #fff; width: 30px; border-radius: 6px; }

/* ===== 数据统计 ===== */
.stats-bar {
    background: var(--primary);
    padding: 40px 0;
    color: #fff;
}
.stats-bar .container {
    display: flex;
    justify-content: space-around;
}
.stat-item { text-align: center; }
.stat-item .stat-num {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 5px;
}
.stat-item .stat-num span { font-size: 20px; }
.stat-item .stat-label {
    font-size: 14px;
    opacity: .8;
}

/* ===== 服务卡片 ===== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}
.service-card {
    background: #fff;
    border-radius: 10px;
    padding: 35px 25px;
    text-align: center;
    border: 1px solid var(--border);
    transition: all .4s;
    position: relative;
    overflow: hidden;
}
.service-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary);
    transform: scaleX(0);
    transition: transform .4s;
}
.service-card:hover {
    box-shadow: 0 12px 35px rgba(26,110,199,.12);
    transform: translateY(-8px);
    border-color: transparent;
}
.service-card:hover::before { transform: scaleX(1); }
.service-card .service-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    color: var(--primary);
    transition: all .4s;
}
.service-card:hover .service-icon {
    background: var(--primary);
    color: #fff;
    transform: rotateY(180deg);
}
.service-card h3 {
    font-size: 18px;
    color: var(--text-dark);
    margin-bottom: 8px;
}
.service-card .service-en {
    font-size: 12px;
    color: #aaa;
    text-transform: uppercase;
    margin-bottom: 15px;
}
.service-card p {
    font-size: 13px;
    color: var(--text-gray);
    line-height: 1.7;
}
.service-card .service-more {
    display: inline-block;
    margin-top: 18px;
    font-size: 13px;
    color: var(--primary);
    font-weight: 500;
}
.service-card .service-more i { margin-left: 4px; transition: .3s; }
.service-card:hover .service-more i { margin-left: 8px; }

/* ===== 关于我们简介 ===== */
.about-intro {
    display: flex;
    align-items: center;
    gap: 50px;
}
.about-intro-text { flex: 1; }
.about-intro-text h2 {
    font-size: 28px;
    color: var(--text-dark);
    margin-bottom: 8px;
}
.about-intro-text .en-title {
    font-size: 14px;
    color: #aaa;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 20px;
}
.about-intro-text .divider {
    width: 60px;
    height: 3px;
    background: var(--primary);
    margin-bottom: 25px;
}
.about-intro-text p {
    color: var(--text-gray);
    margin-bottom: 16px;
    line-height: 2;
}
.about-intro-text .about-tags {
    display: flex;
    gap: 15px;
    margin: 25px 0;
    flex-wrap: wrap;
}
.about-intro-text .about-tags span {
    padding: 6px 18px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
}
.about-intro-text .btn {
    display: inline-block;
    padding: 10px 30px;
    background: var(--primary);
    color: #fff;
    border-radius: 25px;
    font-size: 14px;
}
.about-intro-text .btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(26,110,199,.3);
}
.about-intro-image {
    flex: 0 0 45%;
    position: relative;
}
.about-intro-image .img-box {
    width: 100%;
    height: 380px;
    background: linear-gradient(135deg, #1a6ec7, #0d3a6b);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 80px;
    position: relative;
    overflow: hidden;
}
.about-intro-image .img-box::before {
    content: '';
    position: absolute;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: rgba(255,255,255,.1);
    top: -50px;
    right: -50px;
}
.about-intro-image .img-box::after {
    content: '';
    position: absolute;
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: rgba(255,255,255,.08);
    bottom: -30px;
    left: -30px;
}
.about-intro-image .img-box i {
    position: relative;
    z-index: 1;
}
.about-intro-image .img-badge {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: #fff;
    padding: 20px 30px;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,.1);
    text-align: center;
}
.about-intro-image .img-badge .num {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary);
}
.about-intro-image .img-badge .label {
    font-size: 13px;
    color: var(--text-gray);
}

/* ===== 产品列表 ===== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.product-card {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all .4s;
}
.product-card:hover {
    box-shadow: 0 12px 35px rgba(0,0,0,.1);
    transform: translateY(-5px);
}
.product-card .product-image {
    width: 100%;
    height: 220px;
    background: linear-gradient(135deg, #e8f2fc, #d0e4f7);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 60px;
    color: var(--primary);
    position: relative;
    overflow: hidden;
}
.product-card .product-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(26,110,199,.1), rgba(45,143,212,.2));
}
.product-card .product-image i { z-index: 1; }
.product-card .product-body { padding: 22px; }
.product-card .product-category {
    display: inline-block;
    font-size: 12px;
    color: var(--primary);
    background: var(--primary-light);
    padding: 3px 12px;
    border-radius: 12px;
    margin-bottom: 10px;
}
.product-card h3 {
    font-size: 18px;
    color: var(--text-dark);
    margin-bottom: 8px;
}
.product-card p {
    font-size: 13px;
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: 15px;
}
.product-card .product-link {
    font-size: 13px;
    color: var(--primary);
    font-weight: 500;
}
.product-card .product-link i { margin-left: 4px; transition: .3s; }
.product-card:hover .product-link i { margin-left: 8px; }

/* ===== 新闻列表 ===== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.news-card {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all .4s;
}
.news-card:hover {
    box-shadow: 0 12px 35px rgba(0,0,0,.08);
    transform: translateY(-3px);
}
.news-card .news-image {
    width: 100%;
    height: 180px;
    background: linear-gradient(135deg, #1a6ec7, #2d8fd4);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 50px;
    color: rgba(255,255,255,.4);
    position: relative;
}
.news-card .news-date {
    position: absolute;
    top: 15px;
    left: 15px;
    background: rgba(255,255,255,.95);
    padding: 8px 15px;
    border-radius: 6px;
    text-align: center;
}
.news-card .news-date .day {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
}
.news-card .news-date .month {
    font-size: 12px;
    color: var(--text-gray);
}
.news-card .news-body { padding: 20px; }
.news-card h3 {
    font-size: 16px;
    color: var(--text-dark);
    margin-bottom: 10px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-card p {
    font-size: 13px;
    color: var(--text-gray);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-card .news-more {
    display: block;
    margin-top: 15px;
    font-size: 13px;
    color: var(--primary);
}

/* ===== 合作伙伴 ===== */
.partners-bar {
    background: #fff;
    padding: 40px 0;
}
.partners-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
}
.partner-item {
    height: 70px;
    background: var(--bg-gray);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: var(--text-gray);
    font-weight: 500;
    transition: all .3s;
    border: 1px solid var(--border);
}
.partner-item:hover {
    background: var(--primary-light);
    color: var(--primary);
    border-color: var(--primary);
}

/* ===== 页面Banner ===== */
.page-banner {
    height: 240px;
    background: linear-gradient(135deg, #0d3a6b 0%, #1a6ec7 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}
.page-banner::before {
    content: '';
    position: absolute;
    right: -50px;
    top: -50px;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: rgba(255,255,255,.05);
}
.page-banner::after {
    content: '';
    position: absolute;
    left: 10%;
    bottom: -80px;
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background: rgba(255,255,255,.03);
}
.page-banner h1 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 10px;
    position: relative;
    z-index: 1;
}
.page-banner p {
    font-size: 14px;
    opacity: .7;
    text-transform: uppercase;
    letter-spacing: 3px;
    position: relative;
    z-index: 1;
}

/* ===== 面包屑 ===== */
.breadcrumb {
    background: var(--bg-gray);
    padding: 15px 0;
    font-size: 13px;
    color: var(--text-gray);
}
.breadcrumb a { color: var(--text-gray); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb i { margin: 0 8px; font-size: 10px; }
.breadcrumb .current { color: var(--primary); }

/* ===== 关于我们详情页 ===== */
.about-section {
    display: flex;
    gap: 50px;
    align-items: flex-start;
}
.about-section-text { flex: 1; }
.about-section-text h2 {
    font-size: 24px;
    color: var(--text-dark);
    margin-bottom: 15px;
}
.about-section-text p {
    color: var(--text-gray);
    line-height: 2;
    margin-bottom: 15px;
}
.about-image-box {
    flex: 0 0 40%;
    height: 320px;
    background: linear-gradient(135deg, #1a6ec7, #0d3a6b);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 70px;
    color: rgba(255,255,255,.3);
}

/* 发展历程 */
.timeline {
    position: relative;
    padding: 20px 0;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    width: 2px;
    height: 100%;
    background: var(--border);
    transform: translateX(-50%);
}
.timeline-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 40px;
    position: relative;
}
.timeline-item:nth-child(odd) { flex-direction: row-reverse; }
.timeline-item .timeline-content {
    flex: 0 0 45%;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px 25px;
    box-shadow: 0 4px 15px rgba(0,0,0,.05);
}
.timeline-item .timeline-year {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: #fff;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    z-index: 1;
}
.timeline-content h4 {
    font-size: 16px;
    color: var(--text-dark);
    margin-bottom: 8px;
}
.timeline-content p {
    font-size: 13px;
    color: var(--text-gray);
    line-height: 1.7;
}

/* 企业文化 */
.culture-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.culture-card {
    text-align: center;
    padding: 40px 25px;
    background: var(--bg-gray);
    border-radius: 10px;
    transition: .3s;
}
.culture-card:hover {
    background: var(--primary);
    color: #fff;
}
.culture-card:hover h3, .culture-card:hover p { color: #fff; }
.culture-card .culture-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}
.culture-card:hover .culture-icon { background: rgba(255,255,255,.2); }
.culture-card h3 {
    font-size: 18px;
    color: var(--text-dark);
    margin-bottom: 10px;
}
.culture-card p {
    font-size: 13px;
    color: var(--text-gray);
}

/* 团队结构 */
.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}
.team-card {
    text-align: center;
    padding: 30px 20px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 10px;
    transition: .3s;
}
.team-card:hover {
    box-shadow: 0 8px 25px rgba(0,0,0,.08);
    transform: translateY(-5px);
}
.team-card .team-avatar {
    width: 80px;
    height: 80px;
    margin: 0 auto 15px;
    border-radius: 50%;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: var(--primary);
}
.team-card h4 { font-size: 16px; color: var(--text-dark); margin-bottom: 5px; }
.team-card p { font-size: 13px; color: var(--text-gray); }

/* ===== 服务列表页 ===== */
.service-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}
.service-list-item {
    display: flex;
    gap: 20px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 30px;
    transition: .3s;
}
.service-list-item:hover {
    box-shadow: 0 8px 25px rgba(0,0,0,.08);
    border-color: var(--primary);
}
.service-list-item .service-list-icon {
    flex: 0 0 60px;
    height: 60px;
    border-radius: 10px;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--primary);
}
.service-list-item .service-list-body h3 {
    font-size: 18px;
    color: var(--text-dark);
    margin-bottom: 8px;
}
.service-list-item .service-list-body .service-list-en {
    font-size: 12px;
    color: #aaa;
    text-transform: uppercase;
    margin-bottom: 10px;
}
.service-list-item .service-list-body p {
    font-size: 13px;
    color: var(--text-gray);
    line-height: 1.8;
}
.service-list-item .service-list-body .service-features {
    margin-top: 12px;
}
.service-list-item .service-list-body .service-features li {
    font-size: 13px;
    color: var(--text-gray);
    padding: 4px 0;
    padding-left: 18px;
    position: relative;
}
.service-list-item .service-list-body .service-features li::before {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    color: var(--primary);
    font-size: 11px;
}

/* ===== 解决方案 ===== */
.solution-list .solution-item {
    display: flex;
    align-items: center;
    gap: 40px;
    margin-bottom: 50px;
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--border);
}
.solution-list .solution-item:nth-child(even) { flex-direction: row-reverse; }
.solution-image {
    flex: 0 0 45%;
    height: 280px;
    background: linear-gradient(135deg, #1a6ec7, #0d3a6b);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 60px;
    color: rgba(255,255,255,.3);
}
.solution-body { flex: 1; padding: 30px; }
.solution-body .solution-tag {
    display: inline-block;
    font-size: 12px;
    color: #fff;
    background: var(--primary);
    padding: 3px 12px;
    border-radius: 12px;
    margin-bottom: 12px;
}
.solution-body h3 {
    font-size: 22px;
    color: var(--text-dark);
    margin-bottom: 12px;
}
.solution-body p {
    font-size: 14px;
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 15px;
}
.solution-body .solution-points li {
    font-size: 13px;
    color: var(--text-gray);
    padding: 6px 0;
    padding-left: 22px;
    position: relative;
}
.solution-body .solution-points li::before {
    content: '\f138';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    color: var(--primary);
}

/* ===== 新闻列表页 ===== */
.news-list-page .news-item {
    display: flex;
    gap: 25px;
    padding: 25px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 10px;
    margin-bottom: 20px;
    transition: .3s;
}
.news-list-page .news-item:hover {
    box-shadow: 0 6px 20px rgba(0,0,0,.06);
    border-color: var(--primary);
}
.news-list-page .news-item .news-thumb {
    flex: 0 0 200px;
    height: 130px;
    background: linear-gradient(135deg, #1a6ec7, #2d8fd4);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    color: rgba(255,255,255,.3);
}
.news-list-page .news-item .news-info { flex: 1; }
.news-list-page .news-item .news-info h3 {
    font-size: 18px;
    color: var(--text-dark);
    margin-bottom: 8px;
}
.news-list-page .news-item .news-info .news-meta {
    font-size: 12px;
    color: #aaa;
    margin-bottom: 10px;
}
.news-list-page .news-item .news-info .news-meta span { margin-right: 20px; }
.news-list-page .news-item .news-info p {
    font-size: 13px;
    color: var(--text-gray);
    line-height: 1.7;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 40px;
}
.pagination a {
    min-width: 38px;
    height: 38px;
    line-height: 38px;
    text-align: center;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    color: var(--text-dark);
    padding: 0 12px;
}
.pagination a:hover, .pagination a.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* ===== 新闻详情 ===== */
.news-detail {
    background: #fff;
    border-radius: 10px;
    padding: 40px;
    border: 1px solid var(--border);
}
.news-detail h1 {
    font-size: 26px;
    color: var(--text-dark);
    margin-bottom: 15px;
    line-height: 1.5;
}
.news-detail .news-detail-meta {
    font-size: 13px;
    color: #aaa;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 25px;
}
.news-detail .news-detail-meta span { margin-right: 25px; }
.news-detail .news-detail-content {
    font-size: 15px;
    line-height: 2;
    color: var(--text-dark);
}
.news-detail .news-detail-content p { margin-bottom: 18px; }
.news-back {
    margin-top: 30px;
    text-align: center;
}
.news-back a {
    display: inline-block;
    padding: 10px 30px;
    background: var(--bg-gray);
    border-radius: 25px;
    font-size: 14px;
    color: var(--text-gray);
}
.news-back a:hover { background: var(--primary); color: #fff; }

/* ===== 联系我们 ===== */
.contact-section {
    display: flex;
    gap: 40px;
}
.contact-info { flex: 1; }
.contact-info h2 {
    font-size: 24px;
    color: var(--text-dark);
    margin-bottom: 8px;
}
.contact-info .en-title {
    font-size: 13px;
    color: #aaa;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 20px;
}
.contact-info .divider {
    width: 50px;
    height: 3px;
    background: var(--primary);
    margin-bottom: 25px;
}
.contact-info .contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 18px 0;
    border-bottom: 1px solid var(--border);
}
.contact-info .contact-list .contact-icon {
    flex: 0 0 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--primary);
}
.contact-info .contact-list .contact-text h4 {
    font-size: 14px;
    color: var(--text-gray);
    margin-bottom: 4px;
}
.contact-info .contact-list .contact-text p {
    font-size: 16px;
    color: var(--text-dark);
    font-weight: 500;
}
.contact-form { flex: 0 0 45%; }
.contact-form .form-box {
    background: var(--bg-gray);
    border-radius: 10px;
    padding: 35px 30px;
}
.contact-form h3 {
    font-size: 20px;
    color: var(--text-dark);
    margin-bottom: 25px;
}
.form-group { margin-bottom: 20px; }
.form-group label {
    display: block;
    font-size: 13px;
    color: var(--text-dark);
    margin-bottom: 6px;
    font-weight: 500;
}
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    background: #fff;
    transition: .3s;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(26,110,199,.1);
}
.form-group textarea { resize: vertical; min-height: 100px; }
.btn-submit {
    width: 100%;
    padding: 12px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: .3s;
}
.btn-submit:hover {
    background: var(--primary-dark);
    box-shadow: 0 5px 20px rgba(26,110,199,.3);
}

/* 地图 */
.map-section {
    margin-top: 40px;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--border);
}
.map-section .map-placeholder {
    height: 350px;
    background: linear-gradient(135deg, #e8f2fc, #d0e4f7);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    color: var(--primary);
}
.map-section .map-placeholder i {
    font-size: 50px;
    margin-bottom: 10px;
}
.map-section .map-placeholder p {
    font-size: 16px;
    color: var(--text-dark);
}

/* ===== 页脚 ===== */
.footer {
    background: #1a2a3a;
    color: #b0c4de;
    padding: 60px 0 0;
    font-size: 14px;
}
.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-about .footer-logo {
    font-size: 22px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 15px;
}
.footer-about .footer-logo span {
    display: block;
    font-size: 12px;
    color: #4a7ba8;
    letter-spacing: 2px;
    margin-top: 4px;
}
.footer-about p {
    font-size: 13px;
    line-height: 1.8;
    margin-bottom: 20px;
}
.footer-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,.08);
    color: #b0c4de;
    margin-right: 10px;
    font-size: 16px;
}
.footer-social a:hover {
    background: var(--primary);
    color: #fff;
}
.footer-col h4 {
    color: #fff;
    font-size: 16px;
    margin-bottom: 20px;
}
.footer-col ul li {
    margin-bottom: 10px;
}
.footer-col ul li a {
    color: #b0c4de;
    font-size: 13px;
}
.footer-col ul li a:hover { color: #fff; padding-left: 5px; }
.footer-contact ul li {
    display: flex;
    gap: 12px;
    margin-bottom: 15px;
    font-size: 13px;
}
.footer-contact ul li i { color: var(--primary); margin-top: 4px; }
.footer-bottom {
    text-align: center;
    padding: 20px 0;
    font-size: 12px;
    color: #6a8aaa;
}

/* ===== 返回顶部 ===== */
.back-to-top {
    position: fixed;
    right: 30px;
    bottom: 30px;
    width: 45px;
    height: 45px;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: .3s;
    z-index: 99;
    font-size: 18px;
}
.back-to-top.show { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--primary-dark); transform: translateY(-3px); }

/* ===== 后台管理样式 ===== */
.admin-body { background: #f0f2f5; }
.admin-header {
    background: #1a2a3a;
    color: #fff;
    height: 60px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 30px;
    position: sticky;
    top: 0;
    z-index: 100;
}
.admin-header .admin-logo { font-size: 18px; font-weight: 600; }
.admin-header .admin-logo span { color: var(--primary); }
.admin-header .admin-user { display: flex; align-items: center; gap: 15px; font-size: 14px; }
.admin-header .admin-user a { color: #b0c4de; font-size: 13px; }
.admin-header .admin-user a:hover { color: #fff; }

.admin-container { display: flex; min-height: calc(100vh - 60px); }
.admin-sidebar {
    width: 200px;
    background: #fff;
    border-right: 1px solid var(--border);
    padding: 20px 0;
    flex-shrink: 0;
}
.admin-sidebar ul li a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 25px;
    font-size: 14px;
    color: var(--text-dark);
    transition: .3s;
    border-left: 3px solid transparent;
}
.admin-sidebar ul li a:hover,
.admin-sidebar ul li a.active {
    background: var(--primary-light);
    color: var(--primary);
    border-left-color: var(--primary);
}
.admin-sidebar ul li a i { font-size: 16px; width: 20px; }

.admin-content {
    flex: 1;
    padding: 25px 30px;
    overflow-y: auto;
}
.admin-page-title {
    font-size: 20px;
    color: var(--text-dark);
    margin-bottom: 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.admin-page-title .btn-add {
    padding: 8px 20px;
    background: var(--primary);
    color: #fff;
    border-radius: 6px;
    font-size: 14px;
}
.admin-page-title .btn-add:hover { background: var(--primary-dark); }

.admin-table {
    width: 100%;
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,.04);
}
.admin-table table { width: 100%; border-collapse: collapse; }
.admin-table th {
    background: var(--bg-gray);
    padding: 12px 15px;
    text-align: left;
    font-size: 13px;
    color: var(--text-dark);
    font-weight: 600;
    border-bottom: 1px solid var(--border);
}
.admin-table td {
    padding: 12px 15px;
    font-size: 13px;
    color: var(--text-gray);
    border-bottom: 1px solid var(--border);
}
.admin-table tr:hover td { background: var(--bg-light); }
.admin-table .action-btns a {
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 12px;
    margin-right: 5px;
}
.admin-table .btn-edit { background: var(--primary-light); color: var(--primary); }
.admin-table .btn-edit:hover { background: var(--primary); color: #fff; }
.admin-table .btn-del { background: #fff0f0; color: #e74c3c; }
.admin-table .btn-del:hover { background: #e74c3c; color: #fff; }

/* 登录页 */
.admin-login-box {
    width: 380px;
    margin: 80px auto;
    background: #fff;
    border-radius: 12px;
    padding: 40px 35px;
    box-shadow: 0 10px 40px rgba(0,0,0,.08);
}
.admin-login-box h2 {
    text-align: center;
    font-size: 24px;
    color: var(--text-dark);
    margin-bottom: 30px;
}
.admin-login-box .form-group { margin-bottom: 20px; }
.admin-login-box .btn-login {
    width: 100%;
    padding: 12px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 15px;
    cursor: pointer;
    transition: .3s;
}
.admin-login-box .btn-login:hover { background: var(--primary-dark); }

/* 后台表单 */
.admin-form {
    background: #fff;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 2px 8px rgba(0,0,0,.04);
}
.admin-form .form-group { margin-bottom: 20px; }
.admin-form .form-group label {
    display: block;
    font-size: 14px;
    color: var(--text-dark);
    margin-bottom: 8px;
    font-weight: 500;
}
.admin-form .form-group input,
.admin-form .form-group textarea,
.admin-form .form-group select {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
}
.admin-form .form-group textarea { min-height: 150px; resize: vertical; }
.admin-form .form-group input:focus,
.admin-form .form-group textarea:focus { outline: none; border-color: var(--primary); }
.admin-form .btn-group {
    display: flex;
    gap: 15px;
    margin-top: 25px;
}
.admin-form .btn-save {
    padding: 10px 30px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
}
.admin-form .btn-save:hover { background: var(--primary-dark); }
.admin-form .btn-cancel {
    padding: 10px 30px;
    background: var(--bg-gray);
    color: var(--text-dark);
    border: none;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
}

/* 仪表盘卡片 */
.dashboard-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}
.dash-card {
    background: #fff;
    border-radius: 8px;
    padding: 25px;
    display: flex;
    align-items: center;
    gap: 18px;
    box-shadow: 0 2px 8px rgba(0,0,0,.04);
}
.dash-card .dash-icon {
    width: 55px;
    height: 55px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #fff;
}
.dash-card:nth-child(1) .dash-icon { background: linear-gradient(135deg, #1a6ec7, #2d8fd4); }
.dash-card:nth-child(2) .dash-icon { background: linear-gradient(135deg, #f5a623, #ff8c42); }
.dash-card:nth-child(3) .dash-icon { background: linear-gradient(135deg, #27ae60, #2ecc71); }
.dash-card:nth-child(4) .dash-icon { background: linear-gradient(135deg, #e74c3c, #ff6b6b); }
.dash-card .dash-info h3 { font-size: 28px; color: var(--text-dark); font-weight: 700; }
.dash-card .dash-info p { font-size: 13px; color: var(--text-gray); }

/* ===== 响应式 ===== */
@media (max-width: 1200px) {
    .container { width: 100%; }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid { grid-template-columns: repeat(2, 1fr); }
    .partners-grid { grid-template-columns: repeat(3, 1fr); }
    .team-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .top-bar { display: none; }
    .header .container { height: 60px; }
    .logo-zh { font-size: 20px; }
    .nav {
        position: fixed;
        top: 60px;
        left: 0;
        width: 100%;
        background: #fff;
        max-height: 0;
        overflow: hidden;
        transition: .3s;
        box-shadow: 0 4px 15px rgba(0,0,0,.1);
    }
    .nav.open { max-height: 500px; }
    .nav ul { flex-direction: column; }
    .nav ul li { padding: 0; border-bottom: 1px solid var(--border); }
    .nav ul li a { padding: 15px 25px; flex-direction: row; gap: 8px; }
    .nav ul li a span { font-size: 12px; }
    .nav ul li::after { display: none; }
    .mobile-toggle { display: flex; }
    .banner { height: 350px; }
    .banner-slide h1 { font-size: 26px; }
    .banner-slide .banner-subtitle { font-size: 16px; }
    .banner-slide .banner-desc { font-size: 14px; }
    .section { padding: 40px 0; }
    .section-title h2 { font-size: 24px; }
    .about-intro { flex-direction: column; }
    .about-intro-image { flex: 1; width: 100%; }
    .about-intro-image .img-box { height: 250px; }
    .services-grid,
    .products-grid,
    .news-grid { grid-template-columns: 1fr; }
    .culture-grid { grid-template-columns: 1fr; }
    .contact-section { flex-direction: column; }
    .contact-form { flex: 1; width: 100%; }
    .footer-top { grid-template-columns: 1fr; }
    .page-banner { height: 180px; }
    .page-banner h1 { font-size: 26px; }
    .dashboard-cards { grid-template-columns: repeat(2, 1fr); }
    .admin-sidebar { display: none; }
    .stats-bar .container { flex-wrap: wrap; gap: 20px; }
    .stat-item .stat-num { font-size: 30px; }
    .about-intro-text h2 { font-size: 22px; }
    .timeline::before { left: 20px; }
    .timeline-item { flex-direction: row !important; padding-left: 50px; }
    .timeline-item .timeline-content { flex: 1; }
    .timeline-item .timeline-year { left: 20px; }
    .solution-list .solution-item { flex-direction: column !important; }
    .solution-image { flex: 1; width: 100%; height: 200px; }
    .news-list-page .news-item { flex-direction: column; }
    .news-list-page .news-item .news-thumb { flex: 1; width: 100%; height: 160px; }
}