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

body {
    font-family: 'Microsoft YaHei', 'SimHei', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

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

/* 顶部导航栏 */
.header {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.logo h1 {
    font-size: 1.8rem;
    margin-bottom: 0.2rem;
}

.logo-subtitle {
    font-size: 0.8rem;
    letter-spacing: 2px;
    opacity: 0.9;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    font-size: 1rem;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 5px;
}

.nav-menu a:hover,
.nav-menu a.active {
    background: rgba(255,255,255,0.2);
}

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

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    min-width: 220px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    border-radius: 5px;
    margin-top: 0.5rem;
    list-style: none;
}

.dropdown:hover .dropdown-menu {
    display: block;
}

.dropdown-menu li {
    border-bottom: 1px solid #eee;
}

.dropdown-menu li:last-child {
    border-bottom: none;
}

.dropdown-menu a {
    color: #333;
    display: block;
    padding: 0.8rem 1.2rem;
    font-size: 0.95rem;
}

.dropdown-menu a:hover {
    background: #f0f0f0;
}

/* 英雄区 */
.hero {
    position: relative;
    height: 600px;
    background: url('images/building_04.jpg') center/cover no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-align: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(30, 60, 114, 0.85), rgba(42, 82, 152, 0.75));
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    padding: 0 20px;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn {
    padding: 0.9rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-size: 1rem;
    font-weight: bold;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-primary {
    background: #ff6b35;
    color: white;
}

.btn-primary:hover {
    background: #ff5722;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 107, 53, 0.4);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #1e3c72;
}

/* 通用区块样式 */
section {
    padding: 4rem 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #1e3c72;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: #555;
    margin-bottom: 2.5rem;
}

/* 业务矩阵 */
.solution-matrix {
    background: linear-gradient(135deg, rgba(30, 60, 114, 0.06), rgba(42, 82, 152, 0.04));
}

.solution-matrix .section-title {
    color: #1e3c72;
}

.matrix-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}

.matrix-card {
    background: #fff;
    border-radius: 16px;
    padding: 2rem 1.8rem;
    box-shadow: 0 15px 40px rgba(30, 60, 114, 0.12);
    border: 1px solid rgba(30, 60, 114, 0.12);
}

.matrix-card h3 {
    font-size: 1.4rem;
    margin-bottom: 0.6rem;
    color: #1e3c72;
}

.matrix-card p {
    color: #55637a;
    margin-bottom: 1rem;
}

.matrix-card ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    color: #445266;
}

.matrix-card ul li::before {
    content: "✔";
    color: #ff6b35;
    margin-right: 0.5rem;
}

/* 标杆案例 */
.case-highlights {
    background: #fff;
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.case-card {
    background: linear-gradient(160deg, rgba(30, 60, 114, 0.09), rgba(255, 107, 53, 0.09));
    border-radius: 16px;
    padding: 2rem 1.8rem;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(30, 60, 114, 0.15);
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.case-tag {
    align-self: flex-start;
    padding: 0.3rem 0.8rem;
    border-radius: 999px;
    background: rgba(255, 107, 53, 0.15);
    color: #ff6b35;
    font-size: 0.85rem;
    font-weight: 600;
}

.case-card h3 {
    font-size: 1.3rem;
    color: #1e3c72;
}

.case-card ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    color: #445266;
    line-height: 1.6;
}

.case-card ul li::before {
    content: "•";
    color: #ff6b35;
    margin-right: 0.5rem;
}

/* 合规体系 */
.compliance-roadmap {
    background: linear-gradient(135deg, rgba(42, 82, 152, 0.08), rgba(30, 60, 114, 0.04));
}

.roadmap-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.roadmap-card {
    background: #fff;
    border-radius: 16px;
    padding: 2rem 1.8rem;
    border: 1px solid rgba(30, 60, 114, 0.12);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.roadmap-year {
    font-size: 0.9rem;
    color: #ff6b35;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.roadmap-card h3 {
    font-size: 1.2rem;
    color: #1e3c72;
}

.roadmap-card p {
    color: #4b5970;
    line-height: 1.65;
}

.roadmap-meta {
    font-size: 0.9rem;
    color: #2a5298;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 3rem;
}

/* 业务概览 */
.business-overview {
    background: white;
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.business-card {
    background: #f8f9fa;
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.business-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.business-image {
    width: 100%;
    height: 220px;
    overflow: hidden;
}

.business-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.business-card:hover .business-image img {
    transform: scale(1.1);
}

.business-card h3 {
    font-size: 1.5rem;
    margin: 1.5rem 1.5rem 1rem;
    color: #1e3c72;
}

.business-card p {
    margin: 0 1.5rem 1rem;
    color: #666;
    line-height: 1.8;
}

.business-link {
    display: inline-block;
    margin: 0 1.5rem 1.5rem;
    color: #ff6b35;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
}

.business-link:hover {
    color: #ff5722;
    transform: translateX(5px);
}

/* 特色产品 */
.featured-products {
    background: #f0f4f8;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.product-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.product-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-card h3 {
    font-size: 1.2rem;
    margin: 1rem 1rem 0.5rem;
    color: #1e3c72;
}

.product-card p {
    margin: 0 1rem 1rem;
    color: #666;
    font-size: 0.95rem;
}

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

/* 公司优势 */
.advantages {
    background: white;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.advantage-item {
    text-align: center;
    padding: 2rem;
    background: #f8f9fa;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.advantage-item:hover {
    background: #e9ecef;
    transform: translateY(-5px);
}

.advantage-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.advantage-item h3 {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
    color: #1e3c72;
}

.advantage-item p {
    color: #666;
    line-height: 1.8;
}

/* 新闻动态 */
.news {
    background: #f0f4f8;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.news-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.news-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

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

.news-content {
    padding: 1.5rem;
}

.news-date {
    color: #999;
    font-size: 0.9rem;
}

.news-content h3 {
    font-size: 1.2rem;
    margin: 0.5rem 0;
    color: #1e3c72;
}

.news-content p {
    color: #666;
    margin: 0.8rem 0;
    line-height: 1.8;
}

.news-link {
    color: #ff6b35;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
}

.news-link:hover {
    color: #ff5722;
}

/* 底部信息 */
.footer {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: white;
    padding: 3rem 0 1rem;
}

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

.footer-column h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.footer-column h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.footer-column p {
    margin-bottom: 0.5rem;
    opacity: 0.9;
}

.footer-slogan {
    font-style: italic;
    margin-top: 1rem;
}

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

.footer-column ul li {
    margin-bottom: 0.5rem;
}

.footer-column ul li a {
    color: white;
    text-decoration: none;
    opacity: 0.9;
    transition: all 0.3s ease;
}

.footer-column ul li a:hover {
    opacity: 1;
    padding-left: 5px;
}

.contact-info li {
    opacity: 0.9;
    margin-bottom: 0.8rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.2);
    opacity: 0.8;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .business-grid,
    .products-grid,
    .advantages-grid,
    .news-grid,
    .matrix-grid,
    .case-grid,
    .roadmap-grid {
        grid-template-columns: 1fr;
    }
}