/* ========== 全局重置 ========== */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;color:#333;line-height:1.6;font-size:15px;background:#fff}
a{text-decoration:none;color:inherit;transition:color .3s}
img{max-width:100%;display:block}
ul{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.center{text-align:center}
.mt-30{margin-top:30px}
.mt-40{margin-top:40px}
.mt-50{margin-top:50px}
.empty-tip{text-align:center;color:#999;padding:40px;width:100%}

/* ========== 顶部信息栏 ========== */
.top-bar{background:#f5f7fa;font-size:13px;color:#666;border-bottom:1px solid #eee}
.top-bar-inner{display:flex;justify-content:space-between;align-items:center;height:36px}
.top-phone{color:#1890ff;font-weight:bold}

/* ========== 头部导航 ========== */
.site-header{background:#fff;box-shadow:0 2px 8px rgba(0,0,0,.06);position:sticky;top:0;z-index:100}
.header-inner{display:flex;justify-content:space-between;align-items:center;height:70px}
.logo img{max-height:50px}
.logo-text{font-size:22px;font-weight:bold;color:#1890ff}
.main-nav{display:flex;gap:8px}
.main-nav a{padding:8px 16px;color:#333;font-size:15px;border-radius:4px;position:relative}
.main-nav a:hover,.main-nav a.active{color:#1890ff}
.main-nav a.active::after{content:'';position:absolute;bottom:-2px;left:50%;transform:translateX(-50%);width:24px;height:3px;background:#1890ff;border-radius:2px}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:#333;transition:.3s}

/* ========== 轮播Banner ========== */
.banner-slider{position:relative;height:480px;overflow:hidden;background:linear-gradient(135deg,#1a3a6c 0%,#2d6cb5 50%,#4a9eff 100%)}
.banner-slide{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;align-items:center;opacity:0;transition:opacity .8s;background-size:cover;background-position:center}
.banner-slide.active{opacity:1}
.banner-slide::before{content:'';position:absolute;inset:0;background:rgba(0,0,0,.35)}
.banner-content{position:relative;z-index:2;color:#fff;max-width:600px}
.banner-content h1{font-size:42px;margin-bottom:16px;font-weight:bold;line-height:1.3}
.banner-content p{font-size:18px;margin-bottom:28px;opacity:.9}
.banner-dots{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:3}
.banner-dots span{width:12px;height:12px;border-radius:50%;background:rgba(255,255,255,.4);cursor:pointer;transition:.3s}
.banner-dots span.active{background:#fff;width:32px;border-radius:6px}

/* ========== 按钮 ========== */
.btn{display:inline-block;padding:10px 28px;border-radius:4px;font-size:15px;cursor:pointer;border:none;transition:all .3s;text-align:center}
.btn-primary{background:#1890ff;color:#fff}
.btn-primary:hover{background:#40a9ff;transform:translateY(-2px);box-shadow:0 4px 12px rgba(24,144,255,.3)}
.btn-outline{background:transparent;color:#1890ff;border:2px solid #1890ff}
.btn-outline:hover{background:#1890ff;color:#fff}
.btn-lg{padding:14px 40px;font-size:17px}

/* ========== 通用区块 ========== */
.section{padding:70px 0}
.section-gray{background:#f7f9fc}
.section-title{font-size:30px;font-weight:bold;margin-bottom:12px;color:#222}
.section-title.center{text-align:center}
.section-sub{color:#888;font-size:15px;margin-bottom:40px}
.section-sub.center{text-align:center}

/* ========== 关于我们 ========== */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.about-text .section-title{margin-bottom:20px}
.about-desc{color:#666;line-height:1.9;margin-bottom:24px;font-size:15px}
.about-stats{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.about-stats-full{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-item{background:linear-gradient(135deg,#f0f7ff,#e6f0ff);padding:28px 20px;border-radius:10px;text-align:center}
.stat-num{display:block;font-size:36px;font-weight:bold;color:#1890ff;margin-bottom:6px}
.stat-label{color:#666;font-size:14px}

/* ========== 卡片网格 ========== */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:#fff;border-radius:10px;overflow:hidden;box-shadow:0 2px 12px rgba(0,0,0,.06);transition:all .3s;display:block}
.card:hover{transform:translateY(-6px);box-shadow:0 8px 24px rgba(0,0,0,.12)}
.card-img{height:200px;overflow:hidden;background:#f0f0f0;position:relative}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.card:hover .card-img img{transform:scale(1.08)}
.img-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;color:#bbb;background:linear-gradient(135deg,#f5f7fa,#e8ecf1);font-size:14px}
.img-placeholder.large{height:400px}
.card-body{padding:20px}
.card-body h3{font-size:18px;margin-bottom:10px;color:#222}
.card-body p{color:#888;font-size:14px;line-height:1.7}
.more-link{display:inline-block;margin-top:12px;color:#1890ff;font-size:14px}

/* ========== 新闻列表 ========== */
.news-list{display:flex;flex-direction:column;gap:1px;background:#eef2f7;border-radius:10px;overflow:hidden}
.news-item{display:flex;gap:20px;padding:24px;background:#fff;transition:background .3s;align-items:flex-start}
.news-item:hover{background:#f7faff}
.news-date{flex-shrink:0;width:70px;text-align:center;background:linear-gradient(135deg,#1890ff,#4a9eff);color:#fff;border-radius:8px;padding:12px 8px}
.news-date .day{display:block;font-size:26px;font-weight:bold;line-height:1}
.news-date .ym{display:block;font-size:12px;margin-top:4px;opacity:.9}
.news-info{flex:1}
.news-info h3{font-size:18px;margin-bottom:8px;color:#222}
.news-info p{color:#888;font-size:14px;line-height:1.7}

/* ========== CTA ========== */
.cta-section{background:linear-gradient(135deg,#1a3a6c,#2d6cb5);padding:60px 0;color:#fff;text-align:center}
.cta-inner h2{font-size:30px;margin-bottom:12px}
.cta-inner p{font-size:16px;opacity:.9;margin-bottom:24px}
.cta-inner .btn-primary{background:#fff;color:#1890ff}
.cta-inner .btn-primary:hover{background:#f0f0f0}

/* ========== 页脚 ========== */
.site-footer{background:#1a1f2e;color:#aaa;padding-top:50px}
.footer-inner{display:grid;grid-template-columns:2fr 1fr 1.5fr 1fr;gap:40px;padding-bottom:40px}
.footer-col h3{color:#fff;font-size:20px;margin-bottom:16px}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:16px}
.footer-col p{font-size:14px;line-height:1.8}
.footer-col ul li{margin-bottom:10px;font-size:14px}
.footer-col ul li a:hover{color:#1890ff}
.contact-list li{margin-bottom:10px}
.qrcode{width:110px;height:110px;border-radius:6px;background:#fff;padding:4px}
.footer-bottom{border-top:1px solid #2a3040;padding:20px 0;font-size:13px;text-align:center}
.footer-bottom a{color:#aaa}
.footer-bottom a:hover{color:#1890ff}

/* ========== 内页Banner ========== */
.page-banner{background:linear-gradient(135deg,#1a3a6c,#2d6cb5);color:#fff;padding:50px 0;text-align:center}
.page-banner h1{font-size:32px;margin-bottom:8px}
.page-banner p{opacity:.85;font-size:15px}

/* ========== 面包屑 ========== */
.breadcrumb{font-size:14px;color:#888;margin-bottom:24px}
.breadcrumb a{color:#1890ff}
.breadcrumb span{color:#333}

/* ========== 详情页 ========== */
.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;margin-bottom:30px}
.detail-image{border-radius:10px;overflow:hidden;background:#f0f0f0}
.detail-image img{width:100%;height:100%;object-fit:cover;min-height:350px}
.detail-info h1{font-size:28px;margin-bottom:16px;color:#222}
.detail-meta{display:flex;gap:20px;color:#888;font-size:14px;margin-bottom:20px;padding-bottom:16px;border-bottom:1px solid #eee}
.detail-desc{color:#666;line-height:1.9;margin-bottom:24px;font-size:15px}
.detail-contact{background:#f7f9fc;padding:20px;border-radius:8px;margin-top:20px}
.detail-contact p{margin-bottom:12px;font-size:15px}
.detail-contact strong{color:#1890ff;font-size:18px}
.article-content h2{font-size:22px;margin-bottom:16px;padding-left:12px;border-left:4px solid #1890ff;color:#222}
.article-content p{color:#555;line-height:1.9;margin-bottom:14px}
.detail-content{line-height:1.9;color:#555}
.detail-content img{max-width:100%;border-radius:6px;margin:10px 0}

/* ========== 文章详情 ========== */
.article-detail{max-width:900px;margin:0 auto}
.article-detail h1{font-size:28px;margin-bottom:16px;color:#222;line-height:1.4}
.article-meta{display:flex;gap:20px;color:#999;font-size:14px;padding-bottom:16px;border-bottom:1px solid #eee;margin-bottom:24px}
.article-image{margin-bottom:24px;border-radius:8px;overflow:hidden}
.article-image img{width:100%}
.article-content-body{line-height:2;color:#444;font-size:16px}
.article-content-body p{margin-bottom:16px}
.article-content-body img{max-width:100%;border-radius:6px;margin:10px 0}
.article-content-body h2,.article-content-body h3{margin:24px 0 12px;color:#222}
.article-nav{display:flex;justify-content:space-between;max-width:900px;margin:0 auto;padding:20px 0;border-top:1px solid #eee}
.article-nav a,.article-nav span{color:#666;font-size:14px;max-width:45%}
.article-nav a:hover{color:#1890ff}
.article-nav .next{text-align:right}

/* ========== 联系我们 ========== */
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:40px}
.contact-info h2,.contact-form-wrap h2{font-size:24px;margin-bottom:24px;color:#222}
.contact-detail li{padding:14px 0;border-bottom:1px solid #f0f0f0;font-size:15px;color:#555}
.contact-detail li strong{color:#333;min-width:90px;display:inline-block}
.contact-form{background:#f7f9fc;padding:30px;border-radius:10px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-group{margin-bottom:18px}
.form-group label{display:block;margin-bottom:6px;color:#555;font-size:14px;font-weight:500}
.form-group input,.form-group textarea{width:100%;padding:10px 14px;border:1px solid #ddd;border-radius:6px;font-size:14px;transition:border .3s;font-family:inherit}
.form-group input:focus,.form-group textarea:focus{outline:none;border-color:#1890ff;box-shadow:0 0 0 3px rgba(24,144,255,.1)}
.alert{padding:12px 16px;border-radius:6px;margin-bottom:16px;font-size:14px}
.alert.success{background:#f6ffed;border:1px solid #b7eb8f;color:#389e0d}
.alert.error{background:#fff2f0;border:1px solid #ffccc7;color:#cf1322}

/* ========== 响应式 ========== */
@media(max-width:992px){
    .about-grid,.detail-grid,.contact-grid{grid-template-columns:1fr}
    .card-grid{grid-template-columns:repeat(2,1fr)}
    .footer-inner{grid-template-columns:1fr 1fr}
    .about-stats-full{grid-template-columns:repeat(2,1fr)}
    .banner-slider{height:380px}
    .banner-content h1{font-size:32px}
}
@media(max-width:768px){
    .top-bar{display:none}
    .nav-toggle{display:flex}
    .main-nav{position:fixed;top:70px;left:0;right:0;background:#fff;flex-direction:column;padding:10px 20px;box-shadow:0 4px 12px rgba(0,0,0,.1);transform:translateY(-150%);transition:transform .3s;gap:0}
    .main-nav.open{transform:translateY(0)}
    .main-nav a{padding:14px 0;border-bottom:1px solid #f0f0f0}
    .main-nav a.active::after{display:none}
    .card-grid{grid-template-columns:1fr}
    .footer-inner{grid-template-columns:1fr;gap:30px}
    .about-stats{grid-template-columns:1fr 1fr}
    .section{padding:50px 0}
    .section-title{font-size:24px}
    .banner-slider{height:300px}
    .banner-content h1{font-size:24px}
    .banner-content p{font-size:15px}
    .form-row{grid-template-columns:1fr}
    .news-item{flex-direction:column;gap:12px}
    .news-date{width:100%;display:flex;align-items:center;justify-content:center;gap:10px;padding:8px}
    .article-nav{flex-direction:column;gap:10px}
    .article-nav .next{text-align:left}
}