/* ===== 江禾实业 · 商务风主题 style.css（配色对齐参考站 lyjhsy.cn）===== */
:root{
  --blue:#02a8e4; --blue-d:#0185c3; --blue-l:#e6f7fd;
  --red:#d6031a; --ink:#333; --gray:#888; --line:#e5e5e5; --bg:#f5f7fa;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"Microsoft YaHei","PingFang SC",sans-serif;color:var(--ink);font-size:14px;background:#fff;line-height:1.7}
a{color:inherit;text-decoration:none} img{max-width:100%;display:block}
.wrap{width:1200px;max-width:94%;margin:0 auto}
.clearfix::after{content:"";display:block;clear:both}

/* 顶部条 */
.topbar{background:#f7f9fa;color:#7b8794;font-size:13px;border-bottom:1px solid #eef1f3}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;height:38px}
.topbar a{color:#7b8794}
.topbar b{color:var(--blue)}

/* 头部导航 */
.header{background:#fff;box-shadow:0 2px 8px rgba(0,0,0,.06);position:sticky;top:0;z-index:99}
.header .wrap{display:flex;align-items:center;justify-content:space-between;height:84px;gap:20px}
.logo{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.logo img{height:52px;width:auto}
.logo .txt{white-space:nowrap}
.logo .txt b{display:block;font-size:21px;color:var(--blue-d);letter-spacing:1px;white-space:nowrap;line-height:1.25}
.logo .txt span{display:block;font-size:11px;color:var(--gray);letter-spacing:1.5px;white-space:nowrap}
.nav{flex:1 1 auto}
.nav ul{display:flex;list-style:none;gap:2px;justify-content:center}
.nav>ul>li{position:relative}
.nav>ul>li>a{display:block;padding:30px 12px;font-size:15px;color:#333;transition:.2s;white-space:nowrap}
.nav>ul>li>a:hover,.nav>ul>li.active>a{color:var(--blue);background:var(--blue-l)}
.nav>ul>li>ul{position:absolute;top:84px;left:0;min-width:150px;background:#fff;
  box-shadow:0 6px 16px rgba(0,0,0,.12);display:none;z-index:9}
.nav>ul>li:hover>ul{display:block}
.nav>ul>li>ul li a{display:block;padding:11px 18px;font-size:14px;border-bottom:1px solid #f0f0f0}
.nav>ul>li>ul li a:hover{background:var(--blue-l);color:var(--blue)}
.header .tel{display:flex;align-items:center;gap:8px;color:var(--red);font-weight:700;font-size:18px}
.header .tel i{font-size:20px}

/* 横幅轮播 */
.banner{position:relative;height:480px;overflow:hidden}
.banner .slide{position:absolute;inset:0;opacity:0;transition:opacity 1s}
.banner .slide.active{opacity:1}
.banner .slide img{width:100%;height:480px;object-fit:cover}
.banner .slide::after{content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(100deg,rgba(2,168,228,.9) 0%,rgba(2,168,228,.6) 40%,rgba(1,133,195,.18) 68%,rgba(1,133,195,0) 100%)}
.banner .cap{position:absolute;left:0;right:0;top:50%;transform:translateY(-50%);text-align:center;color:#fff;z-index:2;
  text-shadow:0 2px 10px rgba(0,0,0,.3)}
.banner .cap h2{font-size:44px;letter-spacing:5px}
.banner .cap p{font-size:19px;margin-top:16px;letter-spacing:2px}
.banner .dots{position:absolute;bottom:18px;left:0;right:0;text-align:center;z-index:3}
.banner .dots span{display:inline-block;width:12px;height:12px;border-radius:50%;background:rgba(255,255,255,.6);margin:0 5px;cursor:pointer}
.banner .dots span.on{background:var(--blue)}

/* 通用区块 */
.section{padding:60px 0}
.section.gray{background:var(--bg)}
.sec-h{text-align:center;margin-bottom:40px}
.sec-h h2{font-size:30px;color:var(--blue-d);position:relative;display:inline-block;padding-bottom:14px}
.sec-h h2::after{content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);width:60px;height:3px;background:var(--blue)}
.sec-h p{color:var(--gray);margin-top:10px;font-size:15px}

/* 公司简介 */
.about{display:flex;gap:40px;align-items:center}
.about .pic{flex:0 0 46%}
.about .pic img{border-radius:6px;width:100%}
.about .txt h3{font-size:24px;color:var(--blue-d);margin-bottom:16px}
.about .txt p{margin-bottom:12px;text-indent:2em;color:#555}
.about .txt .more{display:inline-block;margin-top:10px;padding:10px 26px;background:var(--blue);color:#fff;border-radius:4px}

/* 产品网格 */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.prod-card{background:#fff;border:1px solid var(--line);border-radius:6px;overflow:hidden;transition:.25s}
.prod-card:hover{box-shadow:0 10px 24px rgba(2,168,228,.2);transform:translateY(-4px)}
.prod-card .ph{height:200px;overflow:hidden}
.prod-card .ph img{width:100%;height:100%;object-fit:cover;transition:.4s}
.prod-card:hover .ph img{transform:scale(1.08)}
.prod-card .info{padding:18px}
.prod-card .info h4{font-size:17px;color:var(--blue-d);margin-bottom:8px}
.prod-card .info p{color:var(--gray);font-size:13px;height:42px;overflow:hidden}
.prod-card .info .btn{display:inline-block;margin-top:12px;padding:7px 18px;border:1px solid var(--blue);color:var(--blue);border-radius:3px;font-size:13px}
.prod-card .info .btn:hover{background:var(--blue);color:#fff}

/* 优势 */
.adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.adv-item{padding:30px 16px;background:#fff;border-radius:6px}
.adv-item .ic{width:64px;height:64px;line-height:64px;margin:0 auto 14px;border-radius:50%;background:var(--blue-l);color:var(--blue);font-size:28px}
.adv-item h4{font-size:17px;color:var(--blue-d);margin-bottom:8px}
.adv-item p{color:var(--gray);font-size:13px}

/* 新闻列表 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:#fff;border:1px solid var(--line);border-radius:6px;overflow:hidden;transition:.25s}
.news-card:hover{box-shadow:0 10px 24px rgba(0,0,0,.1)}
.news-card .ph{height:190px;overflow:hidden}
.news-card .ph img{width:100%;height:100%;object-fit:cover}
.news-card .info{padding:18px}
.news-card .info .date{color:var(--red);font-size:13px}
.news-card .info h4{font-size:16px;margin:8px 0;color:#333;height:46px;overflow:hidden}
.news-card .info p{color:var(--gray);font-size:13px;height:40px;overflow:hidden}

/* 列表页 */
.page-banner{height:260px;background:linear-gradient(120deg,var(--blue),var(--blue-d));display:flex;align-items:center;justify-content:center;color:#fff;text-align:center}
.page-banner h1{font-size:34px;letter-spacing:3px}
.page-banner p{margin-top:10px;opacity:.85}
.crumbs{padding:16px 0;color:var(--gray);font-size:13px;border-bottom:1px solid var(--line)}
.crumbs a{color:var(--gray)}
.list-wrap{padding:40px 0}
.sidebar{float:left;width:240px}
.sidebar .title{background:var(--blue);color:#fff;padding:14px 18px;font-size:17px}
.sidebar ul{list-style:none;border:1px solid var(--line);border-top:none}
.sidebar ul li a{display:block;padding:13px 18px;border-bottom:1px solid #f0f0f0;color:#555}
.sidebar ul li a:hover,.sidebar ul li.on a{background:var(--blue-l);color:var(--blue);border-left:3px solid var(--blue)}
.main-col{float:right;width:880px}
.prod-list{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.news-list{display:grid;grid-template-columns:1fr;gap:18px}
.news-row{display:flex;gap:18px;background:#fff;border:1px solid var(--line);border-radius:6px;overflow:hidden;padding:14px}
.news-row .ph{width:200px;height:130px;flex:0 0 200px;overflow:hidden}
.news-row .ph img{width:100%;height:100%;object-fit:cover}
.news-row .tx h4{font-size:17px;margin-bottom:8px}
.news-row .tx .date{color:var(--red);font-size:13px;margin-bottom:8px}
.news-row .tx p{color:var(--gray);font-size:13px;height:42px;overflow:hidden}
.pager{text-align:center;margin:30px 0}
.pager a,.pager span{display:inline-block;padding:7px 14px;margin:0 3px;border:1px solid var(--line);border-radius:3px;color:#555}
.pager a:hover,.pager span{background:var(--blue);color:#fff;border-color:var(--blue)}

/* 详情页 */
.detail{padding:40px 0}
.detail h1{font-size:26px;color:var(--blue-d);text-align:center;margin-bottom:10px}
.detail .meta{text-align:center;color:var(--gray);font-size:13px;margin-bottom:24px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.detail .content{font-size:15px;color:#555;line-height:2}
.detail .content img{max-width:100%;margin:14px 0}
.detail .content p{margin-bottom:14px;text-indent:2em}

/* 案例 */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.case-card{overflow:hidden;border-radius:6px;position:relative}
.case-card img{width:100%;height:240px;object-fit:cover}
.case-card .mask{position:absolute;inset:0;background:rgba(1,133,195,.8);color:#fff;display:flex;align-items:center;justify-content:center;opacity:0;transition:.3s;flex-direction:column}
.case-card:hover .mask{opacity:1}
.case-card .mask b{font-size:18px}

/* 联系/留言 */
.contact-box{display:flex;gap:40px}
.contact-info{flex:1;background:var(--blue-l);padding:30px;border-radius:6px}
.contact-info h3{color:var(--blue-d);margin-bottom:18px}
.contact-info p{margin-bottom:12px;font-size:15px}
.contact-form{flex:1}
.contact-form input,.contact-form textarea{width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:4px;margin-bottom:14px;font-size:14px}
.contact-form button{background:var(--blue);color:#fff;border:none;padding:12px 36px;border-radius:4px;cursor:pointer;font-size:15px}
.contact-form button:hover{background:var(--blue-d)}

/* 页脚 */
.footer{background:#12303f;color:#a9c4d1;padding:46px 0 22px;margin-top:40px}
.footer .wrap{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}
.footer .f-col h4{color:#fff;font-size:17px;margin-bottom:16px;border-left:3px solid var(--blue);padding-left:10px}
.footer .f-col p{margin-bottom:8px;font-size:14px}
.footer .f-col a{color:#a9c4d1}
.footer .copy{text-align:center;border-top:1px solid #23485a;margin-top:30px;padding-top:18px;font-size:13px;color:#7f9dab}

@media(max-width:768px){
  .wrap{width:94%}.nav{display:none}.about{flex-direction:column}
  .prod-grid,.adv-grid,.news-grid,.case-grid{grid-template-columns:1fr 1fr}
  .sidebar,.main-col{float:none;width:100%}.prod-list,.news-list{grid-template-columns:1fr}
  .banner{height:300px}.banner .slide img{height:300px}.banner .cap h2{font-size:26px}
  .contact-box{flex-direction:column}
}