/* ========================================   水利设备网站 - 简洁大气设计   配色方案：深蓝 #0f4c81 | 浅蓝 #4a90e2 | 白色 #ffffff | 浅灰 #f8f9fa   ======================================== */

/* 基础重置 */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.7;
    color: #333;
    background-color: #f8f9fa;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul, ol {
    list-style: none;
}

/* 容器 */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========================================   头部区域 - 简洁商务风格   ======================================== */
.header {
    background: #fff;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    border-bottom: 1px solid #e9ecef;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
}

.logo img {
    max-height: 50px;
}

.logo .mobile {
    display: none;
}

.header-contact .phone-link {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #0f4c81;
    font-size: 1.1rem;
    font-weight: 600;
    padding: 10px 20px;
    background: #f8f9fa;
    border-radius: 30px;
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.header-contact .phone-link:hover {
    background: #0f4c81;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(15, 76, 129, 0.2);
}

.phone-icon {
    font-size: 1.2rem;
}

/* ========================================   导航栏 - 简洁大气   ======================================== */
.navbar {
    background: #0f4c81;
    position: sticky;
    top: 82px;
    z-index: 1002;
}

.nav-menu {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

.nav-menu li {
    position: relative;
}

.nav-menu a {
    display: block;
    padding: 14px 24px;
    color: #fff;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    position: relative;
}

.nav-menu a:hover {
    background: rgba(255,255,255,0.1);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: #4a90e2;
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-menu a:hover::after {
    width: 60%;
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    background: #0f4c81;
    border: 1px solid rgba(255,255,255,0.2);
    cursor: pointer;
    padding: 10px;
    border-radius: 6px;
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1003;
    transition: all 0.3s ease;
}

.menu-toggle:hover {
    background: rgba(74, 144, 226, 0.9);
}

.menu-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: #fff;
    margin: 4px 0;
    transition: all 0.3s ease;
}

/* ========================================   面包屑导航   ======================================== */
.breadcrumb {
    background: #fff;
    padding: 12px 0;
    border-bottom: 1px solid #e9ecef;
}

.breadcrumb p {
    color: #6c757d;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.breadcrumb .breadcrumb-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.breadcrumb .breadcrumb-list li {
    display: flex;
    align-items: center;
    color: #6c757d;
    font-size: 0.9rem;
}

.breadcrumb .breadcrumb-list li:not(:last-child)::after {
    content: '>';
    margin-left: 8px;
    color: #adb5bd;
}

.breadcrumb .breadcrumb-list a {
    color: #0f4c81;
    font-weight: 500;
    text-decoration: none;
}

.breadcrumb .breadcrumb-list a:hover {
    color: #4a90e2;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.breadcrumb a {
    color: #0f4c81;
    font-weight: 500;
}

.breadcrumb a:hover {
    color: #4a90e2;
}

/* ========================================   首页横幅 - 简洁大气   ======================================== */
.hero-section {
    background: linear-gradient(135deg, #0f4c81 0%, #1a5a96 100%);
    color: #fff;
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="0.5"/></svg>');
    background-size: 80px 80px;
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 2.2rem;
    font-weight: 700;
    line-height: 1.4;
    max-width: 900px;
    margin: 0 auto 20px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.hero-subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 700px;
    margin: 0 auto 30px;
    font-weight: 300;
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    min-width: 120px;
    backdrop-filter: blur(10px);
}

.feature-icon {
    font-size: 1.5rem;
}

.feature-text {
    font-size: 0.9rem;
    font-weight: 500;
}

.hero-btn {
    display: inline-block;
    padding: 14px 36px;
    background: #4a90e2;
    color: #fff;
    border-radius: 30px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(74, 144, 226, 0.4);
}

.hero-btn:hover {
    background: #357abd;
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(74, 144, 226, 0.5);
}

/* ========================================   关于我们 - 专业形象展示   ======================================== */
.about-section {
    padding: 60px 0;
    background: #fff;
}

.about-content {
    display: flex;
    gap: 40px;
    align-items: flex-start;
}

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

.about-image img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.about-image .mobile {
    display: none;
}

.about-text {
    flex: 1;
}

.about-text p {
    font-size: 1rem;
    line-height: 1.8;
    color: #333;
    margin-bottom: 20px;
    text-indent: 2em;
    text-align: justify;
}

@media (max-width: 768px) {
    .about-section {
        padding: 40px 0;
    }
    
    .about-content {
        flex-direction: column;
        gap: 20px;
    }
    
    .about-image {
        flex: 1;
        max-width: 200px;
        margin: 0 auto;
    }
    
    .about-image .pc {
        display: none;
    }
    
    .about-image .mobile {
        display: block;
    }
    
    .about-text p {
        font-size: 0.9rem;
        line-height: 1.7;
        margin-bottom: 15px;
    }
}

/* ========================================   区块标题 - 简洁大气   ======================================== */
.section-header {
    text-align: left;
    margin-bottom: 45px;
    padding-bottom: 15px;
    border-bottom: 2px solid #e9ecef;
    position: relative;
}

.section-header::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 60px;
    height: 2px;
    background: #4a90e2;
}

.section-title {
    font-size: 1.6rem;
    font-weight: 600;
    color: #0f4c81;
    margin-bottom: 10px;
}

/* ========================================   钩子引导 - 吸引用户   ======================================== */
.hook-section {
    padding: 60px 0;
    background: #f8f9fa;
    border-top: 1px solid #e9ecef;
    border-bottom: 1px solid #e9ecef;
}

.hook-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.hook-content p {
    font-size: 1.1rem;
    color: #495057;
    margin-bottom: 30px;
    line-height: 1.7;
}

.hook-content ul {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.hook-content li {
    background: #fff;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
    position: relative;
    overflow: hidden;
}

.hook-content li::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, #4a90e2 0%, #357abd 100%);
}

.hook-content li:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(15, 76, 129, 0.15);
    border-color: #4a90e2;
}

.hook-content li::after {
    content: '✓';
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 1.2rem;
    color: #4a90e2;
    font-weight: bold;
    opacity: 0.7;
}

/* ========================================   产品适用场景 - 卡片式设计   ======================================== */
.application-scenarios {
    padding: 70px 0;
    background: #fff;
}

.scenarios-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.scenario-item {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
    position: relative;
    overflow: hidden;
}

.scenario-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #0f4c81 0%, #1a5a96 100%);
}

.scenario-item:hover {
    transform: translateY(-6px);
    box-shadow: 0 10px 30px rgba(15, 76, 129, 0.12);
    border-color: #0f4c81;
}

.scenario-item h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: #0f4c81;
    margin-bottom: 15px;
    line-height: 1.4;
}

.scenario-item p {
    font-size: 0.95rem;
    line-height: 1.7;
    color: #495057;
    margin: 0;
}

/* 转化语样式 */
.conversion-text {
    margin-top: 40px;
    padding: 30px 35px;
    background: #f8f9fa;
    border-radius: 12px;
    border: 1px solid #e9ecef;
    text-align: center;
    box-shadow: 0 6px 20px rgba(15, 76, 129, 0.1);
    position: relative;
    overflow: hidden;
}

.conversion-text::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #0f4c81 0%, #4a90e2 100%);
}

.conversion-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #0f4c81;
    margin: 0 0 25px;
    font-weight: 500;
}

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

.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 30px;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: all 0.6s ease;
    z-index: -1;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, #0f4c81 0%, #1a5a96 100%);
    color: #fff;
    box-shadow: 0 4px 15px rgba(15, 76, 129, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(15, 76, 129, 0.4);
}

.btn-secondary {
    background: linear-gradient(135deg, #4a90e2 0%, #357abd 100%);
    color: #fff;
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.3);
}

.btn-secondary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(74, 144, 226, 0.4);
}

/* ========================================   公司优势   ======================================== */
.company-advantages {
    padding: 70px 0;
    background: #f8f9fa;
    border-top: 1px solid #e9ecef;
}

.advantages-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.advantage-item {
    background: #fff;
    padding: 35px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.advantage-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #0f4c81 0%, #4a90e2 100%);
}

.advantage-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(15, 76, 129, 0.15);
    border-color: #4a90e2;
}

.advantage-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
    display: block;
    color: #4a90e2;
}

.advantage-item h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #0f4c81;
    margin-bottom: 15px;
    line-height: 1.4;
}

.advantage-item p {
    font-size: 0.95rem;
    line-height: 1.7;
    color: #495057;
    margin: 0;
}

/* 专题标题摘要 */
.topic-summary {
    margin-top: 20px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.topic-summary p {
    margin: 0;
    color: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
    line-height: 1.6;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .conversion-buttons {
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }
    
    .btn {
        width: 100%;
        max-width: 250px;
    }
    
    .advantages-content {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .advantage-item {
        padding: 25px;
    }
    
    .company-advantages {
        padding: 50px 0;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .application-scenarios {
        padding: 50px 0;
    }
    
    .scenarios-content {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .scenario-item {
        padding: 25px;
    }
    
    .conversion-text {
        margin-top: 30px;
        padding: 20px;
    }
    
    .conversion-text p {
        font-size: 0.95rem;
    }
    
    .section-title {
        font-size: 1.4rem;
        text-align: center;
    }
}

.section-subtitle {
    color: #6c757d;
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ========================================   公司介绍区域   ======================================== */
.about-section {
    padding: 70px 0;
    background: #fff;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 50px;
    align-items: start;
}

.about-image {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(15, 76, 129, 0.15);
}

.about-image img {
    width: 100%;
    height: auto;
    transition: transform 0.5s ease;
}

.about-image:hover img {
    transform: scale(1.03);
}

.about-text h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #0f4c81;
    margin-bottom: 18px;
    line-height: 1.5;
}

.about-text p {
    margin-bottom: 16px;
    line-height: 1.8;
    color: #495057;
    font-size: 0.95rem;
}

/* ========================================   产品区域 - 卡片式设计   ======================================== */
.products-section {
    padding: 70px 0;
    background: #f8f9fa;
}

.category-block {
    margin-bottom: 60px;
}

.category-header {
    text-align: left;
    margin-bottom: 30px;
    padding-bottom: 12px;
    border-bottom: 1px solid #e9ecef;
    position: relative;
}

.category-header::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 50px;
    height: 2px;
    background: #4a90e2;
}

.category-header h2 {
    font-size: 1.4rem;
    font-weight: 600;
    color: #0f4c81;
    margin-bottom: 8px;
}

.category-header p {
    color: #6c757d;
    font-size: 0.9rem;
    line-height: 1.6;
    text-indent: 2em;
    text-align: justify;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
    gap: 24px;
}

.product-card {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 30px rgba(15, 76, 129, 0.15);
    border-color: #4a90e2;
}

.product-image {
    display: block;
    overflow: hidden;
    aspect-ratio: 4/3;
    position: relative;
}

.product-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 60%, rgba(15,76,129,0.1) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.product-card:hover .product-image::after {
    opacity: 1;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.product-card:hover .product-image img {
    transform: scale(1.08);
}

.product-info {
    padding: 18px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* 针对pc.htm中的产品卡片结构 */
.product-card h3.product-title {
    padding: 18px;
    margin: 0;
    flex: 1;
    display: flex;
    align-items: center;
}

.product-title {
    font-size: 1rem;
    font-weight: 500;
    line-height: 1.5;
    transition: all 0.3s ease;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.product-title a {
    color: #0f4c81;
    display: block;
    transition: all 0.3s ease;
    padding: 0 10px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.product-title a:hover {
    color: #4a90e2;
    transform: translateY(-2px);
}

/* 针对pc.htm中的产品卡片结构 */
.product-card h3.product-title {
    padding: 18px;
    margin: 0;
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

/* 手机端适配 */
@media (max-width: 768px) {
    .product-title {
        font-size: 0.95rem;
        line-height: 1.4;
    }
    
    .product-card h3.product-title {
        padding: 15px;
    }
    
    .product-title a {
        padding: 0 8px;
    }
}

.product-desc {
    color: #6c757d;
    font-size: 0.85rem;
    margin-bottom: 12px;
    line-height: 1.5;
}

.product-btn {
    display: inline-block;
    padding: 8px 16px;
    background: #0f4c81;
    color: #fff;
    border-radius: 5px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.product-btn:hover {
    background: #4a90e2;
    color: #fff;
}

/* ========================================   页面标题区   ======================================== */
.page-header {
    background: linear-gradient(135deg, #0f4c81 0%, #1a5a96 100%);
    color: #fff;
    padding: 60px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="0.5"/></svg>');
    background-size: 80px 80px;
    opacity: 0.5;
    z-index: 1;
}

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

.page-header h1 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 15px;
    line-height: 1.4;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
    letter-spacing: 0.3px;
}

.page-header p {
    max-width: 750px;
    margin: 0 auto;
    opacity: 0.95;
    font-size: 0.95rem;
    font-weight: 300;
    line-height: 1.8;
    letter-spacing: 0.2px;
    margin-top: 10px;
}

.topic-content-section {
    padding: 40px 0;
    background: #fff;
}

.topic-content-section .topic-content {
    max-width: 900px;
    margin: 0 auto;
    font-size: 1rem;
    line-height: 1.9;
    color: #495057;
}

.topic-content-section .topic-content p {
    margin-bottom: 15px;
    text-indent: 2em;
}

.topic-content-section .topic-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 15px 0;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.topic-content-section .topic-content h2,
.topic-content-section .topic-content h3 {
    color: #0f4c81;
    margin: 25px 0 15px;
    padding-left: 15px;
    border-left: 4px solid #4a90e2;
}

.topic-content-section .topic-content ul,
.topic-content-section .topic-content ol {
    margin: 15px 0;
    padding-left: 2em;
}

.topic-content-section .topic-content li {
    margin-bottom: 8px;
}

/* ========================================   热门标签   ======================================== */
.hot-products {
    padding: 35px 0;
    background: #fff;
    border-bottom: 1px solid #e9ecef;
}

.hot-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.hot-tag {
    display: inline-block;
    padding: 8px 18px;
    background: #f8f9fa;
    border-radius: 20px;
    color: #0f4c81;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.hot-tag:hover {
    background: #0f4c81;
    color: #fff;
    border-color: #0f4c81;
    transform: translateY(-2px);
}

/* ========================================   产品列表区域   ======================================== */
.products-list-section {
    padding: 50px 0;
    background: #f8f9fa;
}

/* ========================================   产品详情页   ======================================== */
.product-detail-section {
    padding: 50px 0;
    background: #fff;
}

.product-detail-grid,
.product-detail-header {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
    margin-bottom: 50px;
}

.product-info h1 {
    font-size: 1.6rem;
    font-weight: 600;
    color: #0f4c81;
    margin-bottom: 15px;
    line-height: 1.4;
}

.product-meta {
    display: flex;
    gap: 20px;
    color: #6c757d;
    font-size: 0.9rem;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #e9ecef;
}

.product-summary {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 25px;
    border-left: 3px solid #4a90e2;
    font-size: 0.95rem;
    line-height: 1.7;
    color: #495057;
}

.contact-cta {
    margin-top: 20px;
}

.contact-cta .phone-number {
    font-size: 1.1rem;
    color: #0f4c81;
    margin-bottom: 15px;
    font-weight: 600;
}

.contact-cta .phone-number a {
    color: #4a90e2;
}

/* 产品详情页联系方式 */
.product-contact {
    margin-top: 25px;
}

.contact-row {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 15px;
}

.phone-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    background: linear-gradient(135deg, #0f4c81 0%, #1a5a96 100%);
    color: #fff;
    padding: 15px 25px;
    border-radius: 10px;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(15, 76, 129, 0.3);
    flex: 1;
}

.phone-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(15, 76, 129, 0.4);
}

.phone-btn .icon {
    font-size: 1.8rem;
}

.phone-btn .text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.phone-btn .label {
    font-size: 0.8rem;
    opacity: 0.9;
}

.phone-btn .number {
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.qr-code-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    background: #fff;
    padding: 10px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    border: 1px solid #e9ecef;
}

.qr-code-box .qr-img {
    width: 70px;
    height: 70px;
    border-radius: 4px;
}

.qr-code-box .qr-text {
    font-size: 0.7rem;
    color: #6c757d;
    white-space: nowrap;
}

.quote-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: linear-gradient(135deg, #4a90e2 0%, #357abd 100%);
    color: #fff;
    padding: 12px 25px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.3);
}

.quote-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(74, 144, 226, 0.4);
}

.quote-btn .icon {
    font-size: 1.2rem;
}

.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 6px;
    font-weight: 500;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 0.95rem;
}

.btn-primary {
    background: #4a90e2;
    color: #fff;
    font-weight: 600;
}

.btn-primary:hover {
    background: #357abd;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.4);
}

.product-image-main {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(15, 76, 129, 0.15);
}

.product-image-main img {
    width: 100%;
    height: auto;
}

/* ========================================   内容标签页   ======================================== */
.content-tabs,
.section-tabs {
    display: flex;
    border-bottom: 2px solid #e9ecef;
    margin-bottom: 30px;
}

.tab {
    padding: 14px 28px;
    background: transparent;
    cursor: pointer;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    font-weight: 500;
    color: #6c757d;
    transition: all 0.3s ease;
    font-size: 0.95rem;
}

.tab.active {
    color: #0f4c81;
    border-bottom-color: #4a90e2;
}

.tab:hover {
    color: #0f4c81;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.pro,
.product-intro-content {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

/* ========================================   转化区域   ======================================== */
.conversion-section {
    padding: 60px 0;
    background: #f8f9fa;
    border-top: 1px solid #e9ecef;
    border-bottom: 1px solid #e9ecef;
}

.pro h3,
.product-intro-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #0f4c81;
    margin-bottom: 15px;
    line-height: 1.5;
}

.pro p,
.product-intro-content p {
    font-size: 0.95rem;
    line-height: 1.8;
    color: #495057;
    margin-bottom: 18px;
    text-indent: 2em;
    text-align: justify;
}

.product-intro-content p:last-child {
    margin-bottom: 0;
}

/* ========================================   产品推荐   ======================================== */
.product-recommend {
    padding: 60px 0;
    background: #f8f9fa;
}

.product-recommend .section-title {
    text-align: center;
    margin-bottom: 40px;
}

/* ========================================   产品完整描述   ======================================== */
.product-full-desc {
    padding: 60px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-top: 1px solid #e9ecef;
}

.product-full-desc .container {
    max-width: 1000px;
}

.product-full-desc h2 {
    font-size: 1.4rem;
    font-weight: 600;
    color: #0f4c81;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 2px solid #e9ecef;
    position: relative;
    line-height: 1.5;
}

.product-full-desc h2::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 60px;
    height: 2px;
    background: #4a90e2;
}

.product-full-desc p {
    font-size: 0.95rem;
    line-height: 1.8;
    color: #495057;
    margin-bottom: 20px;
}

.product-full-desc p:last-child {
    margin-bottom: 0;
}

/* ========================================   公司简介   ======================================== */
.company-intro {
    background: #fff;
    padding: 50px 0;
    border-top: 1px solid #e9ecef;
    border-bottom: 1px solid #e9ecef;
}

.company-intro p {
    line-height: 1.8;
    color: #495057;
    font-size: 0.95rem;
    max-width: 1000px;
    margin: 0 auto;
}

/* ========================================   分类详情   ======================================== */
.category-detail {
    padding: 60px 0;
    background: #f8f9fa;
    border-top: 1px solid #e9ecef;
}

.category-detail .container {
    max-width: 1000px;
}

.category-detail h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #0f4c81;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid #e9ecef;
    position: relative;
}

.category-detail h2::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 60px;
    height: 2px;
    background: #4a90e2;
}

.category-content {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    line-height: 1.8;
    color: #495057;
    font-size: 0.95rem;
}

.category-content p {
    margin-bottom: 18px;
}

.category-content h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #0f4c81;
    margin: 25px 0 15px;
}

.category-content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #212529;
    margin: 20px 0 12px;
}

.category-content ul,
.category-content ol {
    margin-bottom: 18px;
    padding-left: 20px;
}

.category-content ul li {
    list-style: disc;
    margin-bottom: 8px;
}

.category-content ol li {
    list-style: decimal;
    margin-bottom: 8px;
}

/* ========================================   新闻列表   ======================================== */
.news-list-section {
    padding: 50px 0;
    background: #f8f9fa;
}

.news-list {
    max-width: 900px;
    margin: 0 auto;
}

.news-item {
    background: #fff;
    border-radius: 10px;
    padding: 25px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    display: flex;
    gap: 20px;
    border: 1px solid #e9ecef;
}

.news-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(15, 76, 129, 0.1);
    border-color: #4a90e2;
}

.news-image {
    flex: 0 0 180px;
    border-radius: 6px;
    overflow: hidden;
}

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

.news-content {
    flex: 1;
}

.news-title {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.news-title a {
    color: #0f4c81;
}

.news-title a:hover {
    color: #4a90e2;
}

.news-meta {
    color: #6c757d;
    font-size: 0.85rem;
    margin-bottom: 10px;
}

.news-excerpt {
    color: #495057;
    line-height: 1.6;
    font-size: 0.9rem;
}

.read-more {
    display: inline-block;
    color: #0f4c81;
    font-weight: 500;
    margin-top: 10px;
    font-size: 0.9rem;
}

.read-more:hover {
    color: #4a90e2;
}

/* ========================================   新闻详情   ======================================== */
.news-detail-section {
    padding: 50px 0;
    background: #f8f9fa;
}

.news-article {
    background: #fff;
    border-radius: 10px;
    padding: 40px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.08);
    max-width: 900px;
    margin: 0 auto;
}

.news-header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 25px;
    border-bottom: 1px solid #e9ecef;
}

.news-header h1 {
    font-size: 1.6rem;
    font-weight: 600;
    color: #0f4c81;
    margin-bottom: 15px;
    line-height: 1.4;
}

.news-contact-bar {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin: 25px 0;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 3px solid #4a90e2;
}

.contact-phone,
.contact-quote {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.contact-phone {
    background: #0f4c81;
    color: #fff;
}

.contact-phone:hover {
    background: #1a5a96;
    transform: translateY(-2px);
}

.contact-quote {
    background: #4a90e2;
    color: #fff;
}

.contact-quote:hover {
    background: #357abd;
    transform: translateY(-2px);
}

.news-body {
    line-height: 1.8;
    color: #495057;
    font-size: 0.95rem;
}

.news-body p {
    margin-bottom: 18px;
}

/* ========================================   分页   ======================================== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.pagination a,
.pagination span {
    display: inline-block;
    padding: 10px 16px;
    background: #fff;
    border: 1px solid #e9ecef;
    border-radius: 6px;
    color: #6c757d;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.pagination a:hover,
.pagination .current {
    background: #0f4c81;
    color: #fff;
    border-color: #0f4c81;
}

/* ========================================   页脚 - 简洁商务风格   ======================================== */
.footer {
    background: #0f4c81;
    color: #fff;
}

.footer-marquee {
    background: #1a5a96;
    padding: 12px 0;
    color: #e9ecef;
    font-size: 0.9rem;
}

.footer-marquee a {
    color: #4a90e2;
    margin: 0 6px;
}

.footer-marquee a:hover {
    color: #fff;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 50px;
    padding: 50px 0;
}

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

/* ========================================   专题页面样式 - ts.htm   ======================================== */

/* 专题内容 */
.topic-content {
    padding: 40px 0;
    background-color: #f9f9f9;
}

.topic-content h1 {
    text-align: center;
    color: red;
    font-size: 24px;
    margin-bottom: 30px;
}

.topic-content .topic-desc {
    font-size: 16px;
    line-height: 1.8;
    color: #333;
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* 专题产品列表 */
.subcategory-products {
    padding: 40px 0;
}

.subcategory-products .category-block {
    margin-bottom: 40px;
}

.subcategory-products .category-header {
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid #e0e0e0;
}

.subcategory-products .category-header h3 {
    font-size: 20px;
    color: #333;
    margin-bottom: 10px;
}

.subcategory-products .category-header p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

.subcategory-products .products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
}

.subcategory-products .product-card {
    background-color: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.subcategory-products .product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.subcategory-products .product-image {
    display: block;
    height: 180px;
    overflow: hidden;
}

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

.subcategory-products .product-card:hover .product-image img {
    transform: scale(1.05);
}

.subcategory-products .product-title {
    padding: 15px;
    font-size: 14px;
    font-weight: 600;
}

.subcategory-products .product-title a {
    color: #333;
    text-decoration: none;
    transition: color 0.3s ease;
}

.subcategory-products .product-title a:hover {
    color: #0f4c81;
}

/* 排序容器 */
#class-container {
    display: none;
}

#sorted-class-container {
    display: block;
}

.footer-column h4 {
    margin-bottom: 18px;
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
    position: relative;
    padding-bottom: 10px;
}

.footer-column h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 35px;
    height: 2px;
    background: #4a90e2;
}

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

.footer-column li a {
    color: #adb5bd;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.footer-column li a:hover {
    color: #4a90e2;
    padding-left: 5px;
}

.footer-contact h4 {
    margin-bottom: 18px;
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
    position: relative;
    padding-bottom: 10px;
}

.footer-contact h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 35px;
    height: 2px;
    background: #4a90e2;
}

.qr-code img {
    max-width: 110px;
    border-radius: 6px;
    border: 2px solid rgba(255,255,255,0.1);
}

.contact-info p {
    margin-bottom: 10px;
    color: #adb5bd;
    font-size: 0.9rem;
}

.contact-info strong {
    color: #4a90e2;
}

.footer-bottom {
    background: #0a3a64;
    padding: 25px 0;
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-bottom p {
    color: #6c757d;
    font-size: 0.9rem;
}

.footer-bottom a {
    color: #4a90e2;
}

.footer-bottom a:hover {
    color: #fff;
}

/* ========================================   页脚站内链接   ======================================== */
.footer-site-links {
    margin-bottom: 20px;
    padding: 10px 0;
    border-bottom: 1px solid #eee;
}

.footer-site-links a {
    margin: 0 6px;
}

/* ========================================   响应式设计   ======================================== */
@media (max-width: 1200px) {
    .container {
        max-width: 960px;
    }
    
    .about-content {
        gap: 40px;
    }
    
    .product-detail-grid,
    .product-detail-header {
        gap: 40px;
    }
}

@media (max-width: 992px) {
    .container {
        max-width: 720px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .about-image {
        max-width: 500px;
        margin: 0 auto;
    }
    
    .product-detail-grid,
    .product-detail-header {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
    
    .news-item {
        flex-direction: column;
    }
    
    .news-image {
        flex: 0 0 auto;
        max-height: 200px;
    }
}

@media (max-width: 768px) {
    .container {
        max-width: 100%;
        padding: 0 16px;
    }
    
    .header-container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
        padding: 8px 0;
    }
    
    .logo .pc {
        display: none;
    }
    
    .logo .mobile {
        display: block;
        max-height: 32px;
    }
    
    .header-contact {
        flex: 1;
        min-width: 0;
    }
    
    .header-contact .phone-link {
        padding: 6px 12px;
        font-size: 0.75rem;
        gap: 6px;
        max-width: 160px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    .phone-icon {
        font-size: 0.9rem;
    }
    
    .menu-toggle {
        display: block;
        position: fixed;
        right: 16px;
        top: 16px;
        padding: 8px;
        z-index: 1003;
        margin-left: 8px;
    }
    
    .menu-toggle span {
        width: 20px;
        height: 2px;
        margin: 4px 0;
    }
    
    /* 面包屑导航手机端优化 */
    .breadcrumb {
        padding: 10px 0;
    }
    
    .breadcrumb p {
        font-size: 0.8rem;
        flex-wrap: wrap;
        gap: 6px;
    }
    
    .breadcrumb a {
        white-space: nowrap;
    }
    
    .nav-menu {
        display: none;
        position: fixed;
        top: 0;
        right: 0;
        width: 80%;
        height: 100vh;
        background: #0f4c81;
        flex-direction: column;
        box-shadow: -5px 0 20px rgba(0,0,0,0.1);
        z-index: 1000;
        padding-top: 60px;
    }
    
    .nav-menu.active {
    display: flex;
    animation: slideInRight 0.3s ease;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
    }
    to {
        transform: translateX(0);
    }
}

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

.nav-menu a {
    padding: 14px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    font-size: 0.95rem;
    color: #fff;
}

.nav-menu a:hover {
    background: rgba(255,255,255,0.1);
    color: #4a90e2;
}
    
    .hero-section {
        padding: 60px 0;
    }
    
    .hero-title {
        font-size: 1.5rem;
    }
    
    .hero-features {
        gap: 15px;
    }
    
    .feature-item {
        min-width: 100px;
        padding: 10px;
    }
    
    .feature-icon {
        font-size: 1.2rem;
    }
    
    .feature-text {
        font-size: 0.8rem;
    }
    
    .section-title {
        font-size: 1.4rem;
    }
    
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
        gap: 16px;
    }
    
    .page-header h1 {
        font-size: 1.5rem;
    }
    
    .news-article {
        padding: 25px;
    }
    
    .news-contact-bar {
        flex-direction: column;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .footer-column h4 {
        font-size: 0.9rem;
    }
    
    .footer-column li a {
        font-size: 0.85rem;
    }
    
    .footer-content {
        padding: 30px 0;
    }
    
    .footer-bottom {
        padding: 20px 0;
    }
    
    .footer-bottom p {
        font-size: 0.8rem;
    }
}

/* ========================================   首页英雄横幅   ======================================== */
.hero-section {
    padding: 120px 0;
    background-color: #1a365d;
    text-align: center;
}

.hero-title {
    font-size: 40px;
    color: white;
    margin-bottom: 25px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.hero-subtitle {
    font-size: 20px;
    color: #e2e8f0;
    margin-bottom: 40px;
}

.hero-btn {
    display: inline-block;
    padding: 15px 40px;
    background-color: #3182ce;
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-size: 18px;
    font-weight: 600;
    transition: background-color 0.3s ease;
}

.hero-btn:hover {
    background-color: #2c5282;
}

/* ========================================   产品版块   ======================================== */
.product-section {
    padding: 100px 0;
}

.product-section:nth-child(odd) {
    background-color: #f8fafc;
}

.product-section:nth-child(even) {
    background-color: #ffffff;
}

.product-section .section-header {
    text-align: center;
    margin-bottom: 60px;
}

.product-section .section-title {
    font-size: 32px;
    color: #1a202c;
    margin-bottom: 20px;
}

.product-section .section-subtitle {
    font-size: 18px;
    color: #4a5568;
    max-width: 800px;
    margin: 0 auto;
}

.product-section .products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.product-section .product-card {
    background-color: #ffffff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.product-section:nth-child(even) .product-card {
    background-color: #f8fafc;
}

.product-section .product-image {
    display: block;
    height: 220px;
    overflow: hidden;
}

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

.product-section .product-title {
    padding: 25px;
    font-size: 18px;
    font-weight: 600;
}

.product-section .product-title a {
    color: #1a202c;
    text-decoration: none;
}

/* ========================================   应用场景版块   ======================================== */
.application-scenarios {
    padding: 100px 0;
    background-color: #ffffff;
}

.application-scenarios .section-header {
    text-align: center;
    margin-bottom: 60px;
}

.application-scenarios .section-title {
    font-size: 32px;
    color: #1a202c;
    margin-bottom: 20px;
}

.application-scenarios .section-subtitle {
    font-size: 18px;
    color: #4a5568;
}

.application-scenarios .scenarios-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.application-scenarios .scenario-item {
    background-color: #f8fafc;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.application-scenarios .scenario-item h3 {
    font-size: 20px;
    color: #1a202c;
    margin-bottom: 20px;
}

.application-scenarios .scenario-item p {
    font-size: 16px;
    line-height: 1.6;
    color: #4a5568;
}

/* ========================================   销售地区版块   ======================================== */
.sales-regions {
    padding: 100px 0;
    background-color: #f8fafc;
}

.sales-regions .section-header {
    text-align: center;
    margin-bottom: 60px;
}

.sales-regions .section-title {
    font-size: 32px;
    color: #1a202c;
    margin-bottom: 20px;
}

.sales-regions .section-subtitle {
    font-size: 18px;
    color: #4a5568;
}

.sales-regions .regions-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.sales-regions .region-item {
    background-color: #ffffff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    text-align: center;
}

.sales-regions .region-item h3 {
    font-size: 20px;
    color: #1a202c;
    margin-bottom: 15px;
}

.sales-regions .region-item p {
    font-size: 14px;
    line-height: 1.6;
    color: #4a5568;
}

/* ========================================   响应式设计   ======================================== */
@media (max-width: 768px) {
    .hero-section {
        padding: 80px 0;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-btn {
        padding: 12px 30px;
        font-size: 16px;
    }
    
    .product-section {
        padding: 60px 0;
    }
    
    .product-section .section-title {
        font-size: 24px;
    }
    
    .product-section .section-subtitle {
        font-size: 16px;
    }
    
    .product-section .products-grid {
        gap: 20px;
    }
    
    .application-scenarios {
        padding: 60px 0;
    }
    
    .application-scenarios .section-title {
        font-size: 24px;
    }
    
    .application-scenarios .scenarios-content {
        gap: 20px;
    }
    
    .application-scenarios .scenario-item {
        padding: 25px;
    }
    
    .sales-regions {
        padding: 60px 0;
    }
    
    .sales-regions .section-title {
        font-size: 24px;
    }
    
    .sales-regions .regions-content {
        gap: 20px;
    }
    
    .sales-regions .region-item {
        padding: 20px;
    }
}

/* ========================================   SEO链接区域   ======================================== */
.seo-links {
    padding: 50px 0;
    background: #f8f9fa;
    border-top: 1px solid #e9ecef;
}

.seo-links-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.seo-links-column h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #0f4c81;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e9ecef;
}

.seo-links-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.seo-links-column li {
    margin-bottom: 8px;
}

.seo-links-column a {
    color: #495057;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    display: inline-block;
}

.seo-links-column a:hover {
    color: #0f4c81;
    padding-left: 5px;
}

@media (max-width: 768px) {
    .seo-links {
        padding: 40px 0;
    }
    
    .seo-links-content {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .seo-links-column h3 {
        font-size: 1rem;
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.8s ease-out forwards;
}

/* ========================================   滚动条美化   ======================================== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #0f4c81;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #1a5a96;
}