/*
Theme Name: 隆胜四海 Longsheng Sihai
Theme URI: https://longshengsihai.com
Description: 有机硅产品官网主题：品牌色 + 首页大图 + 产品中心 + 微信咨询悬浮按钮。
Version: 2.0
Author: 小乐乐
Text Domain: lsdh
*/

:root{
  --brand:#0E5C8A;      /* 主色 深蓝 */
  --brand-dark:#0A476C;
  --orange:#F5A623;     /* 强调 橙 */
  --teal:#16A2A2;       /* 辅助 青 */
  --ink:#222;
  --muted:#6a7785;
  --line:#e6edf3;
  --bg:#f5f8fb;
  --radius:12px;
  --maxw:1180px;
  --shadow:0 6px 22px rgba(14,92,138,.10);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);
  background:#fff;
  line-height:1.75;
}
a{color:var(--brand);text-decoration:none;transition:.2s}
a:hover{color:var(--orange)}
img{max-width:100%;height:auto}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* ===== 顶部导航 ===== */
.site-header{
  background:var(--brand);
  color:#fff;
  position:sticky;top:0;z-index:50;
  box-shadow:0 2px 12px rgba(0,0,0,.15);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{color:#fff;font-size:22px;font-weight:800;letter-spacing:1px;white-space:nowrap}
.brand span{color:var(--orange);font-weight:500;font-size:15px;margin-left:8px}
.site-nav .nav-menu{list-style:none;display:flex;gap:28px;margin:0;padding:0}
.site-nav .nav-menu a{color:#fff;font-size:15px;padding:6px 0;position:relative}
.site-nav .nav-menu a:hover{color:var(--orange)}
.site-nav .nav-menu li.current-menu-item>a{color:var(--orange)}
.menu-toggle{display:none;background:none;border:0;color:#fff;font-size:26px;cursor:pointer}

/* ===== 首页大图 Hero ===== */
.hero{
  background:linear-gradient(120deg,var(--brand) 0%,var(--brand-dark) 60%,#073654 100%);
  color:#fff;padding:78px 0 88px;position:relative;overflow:hidden;
}
.hero::after{
  content:"";position:absolute;right:-80px;top:-60px;width:380px;height:380px;
  background:radial-gradient(circle,rgba(245,166,35,.28),transparent 65%);border-radius:50%;
}
.hero .container{position:relative;z-index:2}
.hero h1{font-size:42px;line-height:1.25;margin:0 0 16px;font-weight:800}
.hero p{font-size:18px;color:#d7e6f1;max-width:620px;margin:0 0 30px}
.hero .hero-btns{display:flex;gap:16px;flex-wrap:wrap}
.hero .btn{font-size:16px;padding:13px 30px}
.btn{
  display:inline-block;background:var(--orange);color:#fff;
  border-radius:30px;font-weight:700;transition:.2s;
}
.btn:hover{background:var(--brand);color:#fff}
.btn-ghost{background:transparent;border:2px solid #fff;color:#fff}
.btn-ghost:hover{background:#fff;color:var(--brand)}

/* ===== 核心优势 ===== */
.advantages{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin:-46px auto 0;position:relative;z-index:5}
.adv-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 20px;box-shadow:var(--shadow);text-align:center}
.adv-card .ico{font-size:30px;line-height:1}
.adv-card h4{margin:12px 0 6px;font-size:17px;color:var(--brand)}
.adv-card p{margin:0;font-size:13.5px;color:var(--muted)}

/* ===== 通用区块 ===== */
.section{padding:64px 0}
.section-title{text-align:center;font-size:30px;margin:0 0 8px;color:var(--brand)}
.section-sub{text-align:center;color:var(--muted);margin:0 0 36px;font-size:15px}

/* ===== 产品分类标签 ===== */
.cat-nav{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:0 0 32px}
.cat-chip{display:inline-block;padding:8px 20px;border:1px solid var(--line);border-radius:30px;background:#fff;color:var(--brand);font-size:14px;font-weight:600;transition:.2s}
.cat-chip:hover,.cat-chip.active{background:var(--brand);color:#fff;border-color:var(--brand)}

/* ===== 产品网格 ===== */
.product-grid{display:grid;gap:22px;grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}
.product-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  display:flex;flex-direction:column;text-decoration:none;transition:.2s;box-shadow:0 2px 8px rgba(0,0,0,.04);
}
.product-card:hover{box-shadow:var(--shadow);transform:translateY(-4px);border-color:var(--brand)}
.pcard-img{height:170px;background:linear-gradient(135deg,var(--brand),var(--teal));display:flex;align-items:center;justify-content:center;color:#fff;font-size:46px;font-weight:800}
.pcard-img img{width:100%;height:100%;object-fit:cover}
.pcard-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:6px;flex:1}
.product-card h3{margin:0;font-size:18px;color:var(--brand)}
.product-card p{margin:0;color:var(--muted);font-size:14px;flex:1}
.product-card .card-more{margin-top:6px;color:var(--teal);font-size:14px;font-weight:700}

/* 资讯卡片 */
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  display:flex;flex-direction:column;text-decoration:none;transition:.2s;
}
.news-card:hover{box-shadow:var(--shadow);transform:translateY(-4px);border-color:var(--brand)}
.news-card .nbody{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px;flex:1}
.news-card .ndate{color:var(--teal);font-size:13px;font-weight:600}
.news-card h3{margin:0;font-size:17px;color:var(--ink);line-height:1.5}
.news-card p{margin:0;color:var(--muted);font-size:14px;flex:1}

/* ===== 产品详情页 ===== */
.site-main{padding:48px 0}
.breadcrumb{color:var(--muted);font-size:14px;margin-bottom:16px}
.breadcrumb a{color:var(--brand)}
.detail-head{display:flex;gap:30px;align-items:flex-start;flex-wrap:wrap}
.detail-thumb{flex:0 0 320px;max-width:320px;height:260px;border-radius:var(--radius);background:linear-gradient(135deg,var(--brand),var(--teal));display:flex;align-items:center;justify-content:center;color:#fff;font-size:60px;font-weight:800;overflow:hidden}
.detail-thumb img{width:100%;height:100%;object-fit:cover}
.detail-info{flex:1;min-width:280px}
.detail-info h1{color:var(--brand);margin:0 0 8px;font-size:30px}
.detail-info .lead{color:var(--muted);font-size:16px;margin:0 0 18px}
.product-meta{margin:30px 0;display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
.meta-block{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px}
.meta-block h4{margin:0 0 10px;color:var(--brand);font-size:16px}
.meta-block p{margin:0;color:var(--ink)}
.article-body{font-size:16px;color:var(--ink)}
.article-body h2,.article-body h3{color:var(--brand)}
.cta-band{background:linear-gradient(120deg,var(--brand),var(--brand-dark));color:#fff;border-radius:var(--radius);padding:30px 34px;margin:36px 0;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px}
.cta-band h3{margin:0;font-size:21px}
.cta-band p{margin:4px 0 0;color:#d7e6f1}

/* ===== 微信咨询悬浮按钮 ===== */
.chat-fab{
  position:fixed;right:22px;bottom:26px;z-index:99;
  width:60px;height:60px;border-radius:50%;
  background:var(--teal);color:#fff;border:0;cursor:pointer;
  box-shadow:0 6px 18px rgba(22,162,162,.5);
  font-size:13px;line-height:1.25;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.chat-fab:hover{background:var(--brand)}
.chat-modal{
  position:fixed;right:22px;bottom:98px;z-index:99;
  background:#fff;border:1px solid var(--line);border-radius:14px;
  box-shadow:0 12px 40px rgba(0,0,0,.2);
  padding:18px;text-align:center;width:220px;display:none;
}
.chat-modal.open{display:block}
.chat-modal img{width:172px;height:172px;object-fit:contain;border:1px solid var(--line);border-radius:8px}
.chat-modal p{margin:10px 0 0;font-size:13px;color:var(--muted)}
.chat-modal .wxid{color:var(--brand);font-weight:700;font-size:15px}

/* ===== 产品归档：左侧竖导航 + 右侧列表 ===== */
.archive-layout{display:flex;gap:30px;align-items:flex-start}
.cat-sidebar{flex:0 0 220px;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.cat-sidebar h3{margin:0 0 12px;color:var(--brand);font-size:17px}
.cat-sidebar ul{list-style:none;margin:0;padding:0}
.cat-sidebar li a{display:block;padding:9px 12px;border-radius:8px;color:var(--ink);font-size:15px}
.cat-sidebar li a:hover,.cat-sidebar li a.active{background:var(--brand);color:#fff}
.archive-main{flex:1;min-width:0}

/* ===== 文章详情/列表 ===== */
.post-wrap{display:flex;gap:34px;align-items:flex-start}
.post-main{flex:1;min-width:0}
.post-main h1{color:var(--brand);margin:0 0 8px;font-size:30px}
.post-meta{color:var(--muted);font-size:14px;margin-bottom:22px}
.post-body{font-size:16px;color:var(--ink)}
.post-body h2,.post-body h3{color:var(--brand)}
.post-side{flex:0 0 280px;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.post-side h4{margin:0 0 12px;color:var(--brand);font-size:16px}
.post-side ul{list-style:none;margin:0;padding:0}
.post-side li{padding:8px 0;border-top:1px solid var(--line)}
.post-side li:first-child{border-top:0}
.post-side a{color:var(--ink);font-size:14px}
.post-side a:hover{color:var(--brand)}

/* ===== 底部 ===== */
.site-footer{background:var(--brand-dark);color:#cfe0ec;padding:40px 0 26px;margin-top:50px;font-size:14px}
.footer-inner{display:flex;flex-wrap:wrap;justify-content:space-between;gap:24px}
.footer-inner .col{flex:1;min-width:200px}
.footer-inner .col h5{color:#fff;margin:0 0 12px;font-size:16px}
.footer-inner .col p{margin:0 0 6px}
.footer-inner .col a{color:#cfe0ec}
.footer-menu{list-style:none;margin:0;padding:0}
.footer-menu li{padding:4px 0}
.footer-menu a{color:#cfe0ec}
.footer-bottom{text-align:center;padding-top:18px;margin-top:18px;border-top:1px solid rgba(255,255,255,.12);color:#8fb3c9;font-size:13px}

/* ===== 响应式 ===== */
@media(max-width:900px){
  .advantages{grid-template-columns:repeat(2,1fr)}
  .hero h1{font-size:32px}
}
@media(max-width:768px){
  .menu-toggle{display:block}
  .site-nav{position:absolute;top:66px;left:0;right:0;background:var(--brand);display:none}
  .site-nav.open .nav-menu{flex-direction:column;gap:0;padding:8px 20px 16px}
  .site-nav.open .nav-menu li{padding:11px 0;border-top:1px solid rgba(255,255,255,.14)}
  .archive-layout{flex-direction:column}
  .cat-sidebar{flex:none;width:100%}
  .post-wrap{flex-direction:column}
  .post-side{width:100%;flex:none}
  .detail-thumb{flex:none;width:100%;max-width:100%}
}


/* ===== 新增：首页改版样式 ===== */

/* Hero搜索框 */
.hero-search{max-width:580px;margin:24px 0 12px;display:flex;background:#fff;border-radius:8px;overflow:hidden;box-shadow:0 4px 16px rgba(0,0,0,.2)}
.hero-search input{flex:1;border:0;padding:15px 18px;font-size:14px;color:#333;outline:none;background:transparent}
.hero-search input::placeholder{color:#a0aec0}
.hero-search button{background:var(--brand);color:#fff;border:0;padding:0 32px;font-size:15px;font-weight:700;cursor:pointer;white-space:nowrap;transition:.2s}
.hero-search button:hover{background:var(--orange)}
.hero-hot{font-size:12px;color:rgba(255,255,255,.7);margin-bottom:20px}
.hero-sub{font-size:14px!important;color:#d7e6f1!important;max-width:640px!important;margin:0 0 10px!important}

/* 信任条 */
.trust-bar{background:var(--bg);border-bottom:1px solid var(--line);padding:18px 0}
.trust-bar .container{display:flex;justify-content:center;gap:48px;flex-wrap:wrap}
.trust-item{text-align:center}
.trust-num{font-size:20px;font-weight:800;color:var(--brand);line-height:1.2}
.trust-label{font-size:13px;color:var(--muted);margin-top:4px}

/* 产品分类卡片 */
.cat-cards{display:flex;gap:14px;flex-wrap:wrap;justify-content:center;margin-bottom:36px}
.cat-card{flex:1 1 200px;max-width:240px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;box-sizing:border-box;border-top:3px solid var(--teal);transition:.2s;display:block;color:var(--ink)}
.cat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-top-color:var(--orange)}
.cat-card.cat-primary{border-top-color:var(--brand)}
.cat-card .cat-name{font-size:15px;font-weight:700;color:var(--ink)}
.cat-card .cat-desc{font-size:12px;color:var(--muted);margin-top:6px;line-height:1.6}

/* 旗舰产品推荐 */
.flagship-grid{display:flex;gap:16px;flex-wrap:wrap;justify-content:center}
.flagship-card{flex:1 1 240px;max-width:280px;background:#fff;border-radius:12px;overflow:hidden;box-shadow:var(--shadow);transition:.2s}
.flagship-card:hover{transform:translateY(-4px);box-shadow:0 10px 30px rgba(0,0,0,.12)}
.flagship-card .fcard-img{height:140px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px;font-weight:600;text-align:center;padding:0 16px}
.flagship-card .fcard-body{padding:16px}
.flagship-card .fcard-tag{font-size:12px;font-weight:600;color:var(--brand)}
.flagship-card .fcard-desc{font-size:13px;color:#4a5568;margin-top:8px;line-height:1.7}
.flagship-card .fcard-btns{display:flex;gap:8px;margin-top:14px}
.flagship-card .fcard-btn{flex:1;text-align:center;padding:8px;border-radius:5px;font-size:13px;font-weight:600;cursor:pointer;transition:.2s;text-decoration:none;display:block}
.flagship-card .fcard-btn.primary{background:var(--brand);color:#fff}
.flagship-card .fcard-btn.primary:hover{background:var(--orange)}
.flagship-card .fcard-btn.ghost{border:1px solid var(--brand);color:var(--brand)}
.flagship-card .fcard-btn.ghost:hover{background:var(--brand);color:#fff}
.fgrad-1{background:linear-gradient(135deg,#0E5C8A,#4299E1)}
.fgrad-2{background:linear-gradient(135deg,#16A2A2,#4FD1C5)}
.fgrad-3{background:linear-gradient(135deg,#6B46C1,#9F7AEA)}
.fgrad-4{background:linear-gradient(135deg,#C05621,#ED8936)}

/* 行业应用 */
.industry-grid{display:flex;gap:12px;flex-wrap:wrap;justify-content:center;max-width:900px;margin:0 auto}
.industry-item{flex:1 1 120px;max-width:140px;text-align:center;padding:20px 10px;background:#fff;border-radius:12px;border:1px solid var(--line);transition:.2s}
.industry-item:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--orange)}
.industry-item .ind-ico{font-size:28px;line-height:1}
.industry-item .ind-name{font-size:13px;font-weight:600;color:#2d3748;margin-top:8px}

/* 实力+询盘区 */
.cta-section{background:linear-gradient(135deg,var(--brand-dark),var(--brand));color:#fff;padding:48px 0}
.cta-section .container{display:flex;gap:32px;flex-wrap:wrap;align-items:flex-start}
.cta-left{flex:1 1 280px;min-width:0}
.cta-left h3{font-size:22px;font-weight:700;margin:0 0 14px;color:#fff}
.cta-left ul{list-style:none;padding:0;margin:0;font-size:14px;line-height:2.2;opacity:.9}
.cta-left li::before{content:"\2713  ";color:var(--orange);font-weight:700}
.cta-right{flex:1 1 300px;min-width:0;background:#fff;border-radius:12px;padding:24px;color:var(--ink)}
.cta-right h3{font-size:18px;font-weight:700;color:var(--brand);margin:0 0 16px}
.cta-right .form-input{width:100%;border:1px solid #cbd5e0;border-radius:6px;padding:10px 12px;font-size:13px;margin-bottom:10px;box-sizing:border-box;outline:none}
.cta-right .form-input:focus{border-color:var(--brand)}
.cta-right .form-submit{width:100%;background:var(--brand);color:#fff;border:0;padding:12px;border-radius:6px;font-size:14px;font-weight:700;cursor:pointer;transition:.2s}
.cta-right .form-submit:hover{background:var(--orange)}

/* 在线接待悬浮面板 */
.contact-panel{position:fixed;bottom:24px;right:24px;width:264px;background:#fff;border-radius:14px;box-shadow:0 8px 30px rgba(0,0,0,.22);overflow:hidden;z-index:999;display:none}
.contact-panel.open{display:block}
.contact-panel .cp-header{background:linear-gradient(135deg,var(--brand),var(--teal));color:#fff;padding:13px 16px;font-size:14px;font-weight:700;display:flex;align-items:center;gap:8px}
.contact-panel .cp-body{padding:14px 16px;font-size:13px;color:#4a5568;line-height:2.1}
.contact-panel .cp-body a{color:var(--brand);font-weight:600}
.contact-panel .cp-btns{padding:0 16px 14px;display:flex;gap:8px}
.contact-panel .cp-btn{flex:1;text-align:center;padding:10px;border-radius:6px;font-size:13px;font-weight:700;cursor:pointer;text-decoration:none;transition:.2s}
.contact-panel .cp-btn.wx{background:#07C160;color:#fff}
.contact-panel .cp-btn.wx:hover{background:#06ad56}
.contact-panel .cp-btn.tel{background:var(--brand);color:#fff}
.contact-panel .cp-btn.tel:hover{background:var(--orange)}
.chat-fab{background:linear-gradient(135deg,var(--brand),var(--teal))!important;color:#fff!important;border:0!important}

/* 移动端适配 */
@media(max-width:768px){
  .hero h1{font-size:28px}
  .hero p{font-size:15px}
  .hero-search{flex-direction:column}
  .hero-search button{padding:12px}
  .trust-bar .container{gap:24px}
  .trust-num{font-size:17px}
  .cat-card{flex:1 1 140px}
  .flagship-card{flex:1 1 100%}
  .industry-item{flex:1 1 80px}
  .contact-panel{width:calc(100% - 48px);right:24px;left:24px}
}
/* 资讯列表特色图像 */
.news-thumb-custom {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: 8px;
  background: #f0f4f5;
}
.news-thumb-custom a {
  display: block;
  width: 100%;
  height: 100%;
}
.news-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}
.news-thumb-custom:hover .news-thumb-img {
  transform: scale(1.05);
}
/* ========== 资讯列表特色图像 ========== */
.news-thumb-custom {
    width: 200px;
    height: 140px;
    flex-shrink: 0;
    border-radius: 8px;
    overflow: hidden;
    background: #0a1628;  /* 加这行：深色背景，匹配首图 */
}

.news-thumb-custom a {
    display: block;
    width: 100%;
    height: 100%;
}

.news-thumb-img {
    width: 100%;
    height: 100%;
    object-fit: contain;  /* 改这行：cover → contain，完整显示不裁切 */
    display: block;
}

/* 响应式：小屏幕图片占满宽度 */
@media (max-width: 768px) {
    .news-thumb-custom {
        width: 100%;
        height: 180px;
    }
}
/* ========== 产品列表页缩略图 - 完整显示不裁切 ========== */
.product-thumb {
    aspect-ratio: 1 / 1 !important;
    overflow: hidden;
    background: #f5f5f5;
}
.product-thumb img {
    width: 100% !important;
    height: 100% !important;
    object-fit: contain !important;
    display: block;
}