/* css/style.css */
/* 全局样式 */
:root {
    --primary: #1a5276;
    --primary-light: #2d6a9f;
    --accent: #f0ad4e;
    --dark: #333;
    --light-bg: #f8f9fa;
    --border-color: #e0e0e0;
}

* {
    box-sizing: border-box;
}

body {
    font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    color: #333;
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--primary);
    transition: color 0.2s;
}

a:hover {
    color: var(--primary-light);
    text-decoration: none;
}

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

/* 顶部信息栏 */
.top-bar {
    background: #1a3c5e;
    color: #fff;
    padding: 8px 0;
    font-size: 13px;
}

.top-bar-text {
    color: rgba(255, 255, 255, 0.9);
}

.top-bar-text i {
    margin-right: 4px;
    color: var(--accent);
}

/* 导航栏 */
.navbar {
    border-bottom: 2px solid var(--primary);
    padding: 8px 0;
}

.navbar-brand {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary) !important;
}

.brand-icon {
    color: var(--accent);
    margin-right: 6px;
    font-size: 1.5rem;
    vertical-align: middle;
}

.brand-text {
    vertical-align: middle;
}

.navbar-nav .nav-link {
    color: #333 !important;
    font-weight: 500;
    padding: 8px 14px !important;
    font-size: 15px;
    transition: color 0.2s;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-item.active .nav-link {
    color: var(--primary) !important;
    border-bottom: 2px solid var(--accent);
}

.navbar-toggler {
    border: none;
    padding: 6px 10px;
}

/* Banner轮播 */
.carousel-item {
    height: 420px;
}

.carousel-img {
    height: 100%;
    display: flex;
    align-items: center;
}

.carousel-overlay {
    width: 100%;
    padding: 40px 0;
}

.carousel-title {
    color: #fff;
    font-size: 2.5rem;
    font-weight: 700;
    text-shadow: 1px 2px 4px rgba(0, 0, 0, 0.3);
}

.carousel-desc {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.2rem;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.2);
}

.carousel-control-prev-icon,
.carousel-control-next-icon {
    background-color: rgba(0, 0, 0, 0.4);
    border-radius: 50%;
    padding: 18px;
}

/* 通用区块 */
.section-padding {
    padding: 60px 0;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
}

.section-subtitle {
    color: #777;
    font-size: 1.05rem;
}

.section-divider {
    width: 60px;
    height: 3px;
    background: var(--accent);
    margin: 12px auto 0;
}

/* 产品分类卡片 */
.product-cat-card {
    display: block;
    text-align: center;
    padding: 20px 10px;
    border-radius: 8px;
    background: #fff;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
    color: #333;
    text-decoration: none;
}

.product-cat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
    border-color: var(--primary);
    color: var(--primary);
    text-decoration: none;
}

.cat-icon-wrap {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 10px;
}

.cat-name {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0;
}

/* 优势卡片 */
.advantage-card {
    padding: 25px 15px;
    background: #fff;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}

.advantage-card:hover {
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.adv-icon {
    margin-bottom: 12px;
}

/* 产品卡片 */
.product-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}

.product-card:hover {
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.product-info {
    padding: 12px;
}

.product-section-title {
    font-size: 1.3rem;
    font-weight: 700;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--accent);
    margin-bottom: 20px;
}

/* 侧边栏 */
.product-sidebar {
    background: #fff;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    padding: 15px;
    position: sticky;
    top: 90px;
}

.sidebar-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary);
}

.sidebar-nav {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-nav li {
    margin-bottom: 2px;
}

.sidebar-nav li a {
    display: block;
    padding: 8px 12px;
    color: #555;
    border-radius: 4px;
    font-size: 14px;
    transition: all 0.2s;
}

.sidebar-nav li a:hover,
.sidebar-nav li a.active {
    background: #e3f2fd;
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
}

/* 服务卡片 */
.service-card {
    transition: all 0.3s;
    border: 1px solid var(--border-color);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

/* 案例卡片 */
.case-card {
    transition: all 0.3s;
    border: 1px solid var(--border-color);
}

.case-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

/* 新闻卡片 */
.news-card {
    transition: all 0.3s;
    border: 1px solid var(--border-color);
}

.news-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.news-card h5 {
    font-size: 1rem;
    line-height: 1.5;
}

.news-card h5 a {
    color: #333;
}

.news-card h5 a:hover {
    color: var(--primary);
}

/* 联系信息 */
.contact-info-item {
    overflow: hidden;
}

.contact-info-item i {
    margin-top: 3px;
}

/* 联系表单 */
.contact-form input,
.contact-form textarea {
    border-radius: 6px;
    border: 1px solid #ddd;
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 0.2rem rgba(26, 82, 118, 0.15);
}

/* 页面Banner */
.page-banner h1 {
    font-size: 2.2rem;
    font-weight: 700;
}

/* 站点地图 */
.sitemap-cat {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary);
    border-bottom: 2px solid var(--accent);
    padding-bottom: 6px;
    margin-bottom: 10px;
}

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

.sitemap-list li {
    margin-bottom: 6px;
}

.sitemap-list li a {
    color: #555;
    font-size: 14px;
}

.sitemap-list li a:hover {
    color: var(--primary);
}

/* 页脚 */
.site-footer {
    background: #1a1f25;
    color: #ccc;
    padding: 40px 0 20px;
    font-size: 14px;
}

.footer-title {
    color: #fff;
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 15px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--accent);
    display: inline-block;
}

.footer-text {
    color: #aaa;
    line-height: 1.8;
}

.footer-links {
    list-style: none;
    padding: 0;
    columns: 2;
}

.footer-links li {
    margin-bottom: 6px;
}

.footer-links li a {
    color: #aaa;
    font-size: 13px;
    transition: color 0.2s;
}

.footer-links li a:hover {
    color: var(--accent);
    text-decoration: none;
}

.footer-divider {
    border-color: rgba(255, 255, 255, 0.1);
    margin: 20px 0;
}

.copyright {
    color: #888;
    font-size: 12px;
    margin-bottom: 0;
}

.beian-link {
    color: #888;
}

.beian-link:hover {
    color: #aaa;
}

/* 响应式 */
@media (max-width: 991px) {
    .carousel-item {
        height: 300px;
    }
    .carousel-title {
        font-size: 1.8rem;
    }
    .carousel-desc {
        font-size: 1rem;
    }
    .section-title {
        font-size: 1.6rem;
    }
    .section-padding {
        padding: 40px 0;
    }
    .page-banner h1 {
        font-size: 1.6rem;
    }
}

@media (max-width: 767px) {
    .carousel-item {
        height: 240px;
    }
    .carousel-title {
        font-size: 1.4rem;
    }
    .carousel-desc {
        font-size: 0.9rem;
    }
    .navbar-brand {
        font-size: 1.1rem;
    }
    .brand-icon {
        font-size: 1.2rem;
    }
    .product-cat-card {
        padding: 14px 8px;
    }
    .cat-icon-wrap {
        width: 60px;
        height: 60px;
    }
    .cat-icon-wrap .fa-3x {
        font-size: 1.8rem;
    }
    .cat-name {
        font-size: 0.8rem;
    }
    .section-title {
        font-size: 1.4rem;
    }
    .page-banner h1 {
        font-size: 1.4rem;
    }
    .product-sidebar {
        position: static;
        margin-bottom: 20px;
    }
}

@media (max-width: 480px) {
    .carousel-item {
        height: 200px;
    }
    .carousel-title {
        font-size: 1.2rem;
    }
    .carousel-desc {
        font-size: 0.8rem;
    }
    .section-padding {
        padding: 30px 0;
    }
    .contact-info-item i.fa-2x {
        font-size: 1.4rem;
    }
}