/* ===== JSEHS 前台样式 · 环保科技风 ===== */
:root{
  --green:#10b981; --blue:#0ea5e9; --dark:#0f172a;
  --ink:#1f2937; --muted:#64748b; --line:#e5e7eb; --bg:#f8fafc;
  --green-soft:#ecfdf5;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:#fff;line-height:1.7;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.btn{display:inline-block;background:linear-gradient(135deg,var(--green),var(--blue));color:#fff;padding:11px 26px;border-radius:999px;font-weight:600;transition:.2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(16,185,129,.3)}
.btn.outline{background:transparent;color:var(--green);border:1.5px solid var(--green)}
.btn.outline:hover{background:var(--green-soft);box-shadow:none}
.center{text-align:center;margin-top:28px}

/* ===== 导航 ===== */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:66px}
.logo{font-weight:800;font-size:22px;color:var(--green);letter-spacing:1px}
.main-nav>ul{display:flex;gap:4px;list-style:none}
.main-nav>ul>li{position:relative}
.main-nav>ul>li>a{display:flex;align-items:center;gap:4px;padding:10px 14px;border-radius:8px;font-weight:500;transition:.2s}
.main-nav>ul>li>a:hover{color:var(--green);background:var(--green-soft)}
.caret{font-size:10px;opacity:.6}
.sub{position:absolute;top:100%;left:0;min-width:210px;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 12px 32px rgba(0,0,0,.1);list-style:none;padding:8px;display:none}
.has-sub:hover .sub{display:block}
.sub li a{display:block;padding:8px 12px;border-radius:6px;font-size:14px;white-space:nowrap}
.sub li a:hover{background:var(--green-soft);color:var(--green)}
.nav-cta{background:linear-gradient(135deg,var(--green),var(--blue));color:#fff;padding:9px 18px;border-radius:999px;font-weight:600;font-size:14px}
.nav-toggle{display:none;background:none;border:none;font-size:26px;cursor:pointer;color:var(--ink)}

/* ===== Hero / 横幅 ===== */
.hero{position:relative;color:#fff;background:linear-gradient(135deg,#0f172a,#064e3b 60%,#065f46)}
.hero-slides{position:relative}
.slide{min-height:460px;display:flex;align-items:center;background-size:cover;background-position:center;animation:fade 1s}
@keyframes fade{from{opacity:0}to{opacity:1}}
.hero h1{font-size:42px;line-height:1.25;margin-bottom:14px;text-shadow:0 2px 12px rgba(0,0,0,.3)}
.hero p{font-size:18px;opacity:.92;margin-bottom:24px;max-width:640px}
.hero .btn{font-size:16px}

/* ===== 通用区块 ===== */
.section{padding:72px 0}
.section-alt{background:var(--bg)}
.section-title{text-align:center;font-size:30px;font-weight:800;margin-bottom:8px}
.section-title.left{text-align:left}
.section-sub{text-align:center;color:var(--muted);margin-bottom:40px}

/* ===== 业务卡片 ===== */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:28px;transition:.25s;display:block}
.card:hover{transform:translateY(-6px);border-color:var(--green);box-shadow:0 18px 40px rgba(16,185,129,.15)}
.card-icon{font-size:34px;margin-bottom:12px}
.card h3{font-size:18px;margin-bottom:8px;color:var(--ink)}
.card p{color:var(--muted);font-size:14px}

/* ===== 公司介绍 ===== */
.about{display:grid;grid-template-columns:1.4fr 1fr;gap:48px;align-items:center}
.about-text p{color:var(--muted);margin:16px 0 24px}
.about-stats{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.stat{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;text-align:center}
.stat b{display:block;font-size:26px;color:var(--green)}
.stat span{font-size:13px;color:var(--muted)}

/* ===== 新闻 ===== */
.news-list{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;transition:.2s;display:block}
.news-item:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(0,0,0,.08);border-color:var(--blue)}
.news-meta{font-size:12px;color:var(--muted);margin-bottom:8px}
.news-item h3{font-size:16px;margin-bottom:8px;line-height:1.5}
.news-item p{font-size:14px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ===== 合作伙伴 ===== */
.partners{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.partner{background:#fff;border:1px solid var(--line);border-radius:12px;height:90px;display:flex;align-items:center;justify-content:center;font-weight:600;color:var(--muted);transition:.2s}
.partner:hover{border-color:var(--green);color:var(--green)}

/* ===== 页脚 ===== */
.site-footer{background:var(--dark);color:#cbd5e1;padding:54px 0 0}
.footer-cols{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;padding-bottom:36px}
.f-col h4{color:#fff;font-size:16px;margin-bottom:14px}
.f-col ul{list-style:none}
.f-col li{margin-bottom:8px}
.f-col a{color:#cbd5e1;font-size:14px}
.f-col a:hover{color:var(--green)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0;text-align:center;font-size:13px;color:#94a3b8}
.footer-bottom a{color:#94a3b8}
.footer-bottom a:hover{color:var(--green)}

/* ===== 详情页通用 ===== */
.page-hero{background:linear-gradient(135deg,#0f172a,#064e3b);color:#fff;padding:56px 0}
.page-hero h1{font-size:32px;margin-bottom:8px}
.page-hero p{opacity:.85}
.detail{max-width:860px;margin:0 auto;padding:48px 20px}
.detail h2{font-size:22px;margin:28px 0 12px;color:var(--ink)}
.detail p{color:var(--muted);margin-bottom:14px}
.prose{color:var(--muted);line-height:1.9}

/* ===== 响应式 ===== */
@media(max-width:900px){
  .cards,.news-list{grid-template-columns:repeat(2,1fr)}
  .about{grid-template-columns:1fr;gap:28px}
  .partners{grid-template-columns:repeat(2,1fr)}
  .footer-cols{grid-template-columns:repeat(2,1fr)}
  .hero h1{font-size:32px}
}
@media(max-width:640px){
  .main-nav{position:absolute;top:66px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);max-height:0;overflow:hidden;transition:.3s}
  .main-nav.open{max-height:480px;overflow:auto}
  .main-nav>ul{flex-direction:column;padding:10px}
  .sub{position:static;box-shadow:none;border:none;display:block;padding-left:14px}
  .nav-toggle{display:block}
  .cards,.news-list,.partners{grid-template-columns:1fr}
  .hero h1{font-size:26px}
}

/* 表单与提示 */
.contact-form{display:flex;flex-direction:column;gap:14px;margin-top:10px}
.contact-form input,.contact-form textarea{padding:12px 14px;border:1px solid var(--line);border-radius:10px;font-size:15px;font-family:inherit}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:var(--green)}
.alert{padding:12px 16px;border-radius:10px;background:var(--green-soft);color:#047857;margin-bottom:18px;font-size:14px}
.alert:empty{display:none}

/* 联系我们：信息卡 + 表单 双栏布局 */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start;margin-bottom:36px}
.contact-cards{display:flex;flex-direction:column;gap:14px}
.c-card{display:flex;align-items:center;gap:14px;padding:16px 18px;border:1px solid var(--line);border-radius:14px;background:#fff;transition:border-color .2s,box-shadow .2s}
.c-card:hover{border-color:var(--green);box-shadow:0 6px 22px rgba(16,185,129,.12)}
.c-ico{width:44px;height:44px;flex:0 0 44px;display:flex;align-items:center;justify-content:center;font-size:22px;border-radius:12px;background:var(--green-soft)}
.c-txt{display:flex;flex-direction:column;line-height:1.5}
.c-label{font-size:12px;color:var(--muted)}
.c-val{font-size:16px;font-weight:600;color:var(--ink)}
.contact-form-box{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px}
.contact-form-box h3{margin:0 0 8px;font-size:18px}
.contact-map{margin-top:8px}
.contact-map h3{margin:0 0 14px;font-size:18px}
.map-embed{border-radius:14px;overflow:hidden;border:1px solid var(--line)}
.map-embed iframe{display:block;width:100%;height:360px;border:0}
@media (max-width:760px){.contact-grid{grid-template-columns:1fr}}

/* ===== 服务详情（对齐 ehscare：检测范围/项目/标准/案例/流程 + 侧栏） ===== */
.hero-badge{display:inline-block;margin-top:14px;padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);font-size:14px;backdrop-filter:blur(4px)}
.service-detail{display:grid;grid-template-columns:1fr 320px;gap:36px;align-items:start}
.sd-main{min-width:0}
.sd-block{margin-bottom:26px}
.sd-block h2{font-size:20px;color:var(--dark);margin-bottom:12px;padding-left:12px;border-left:4px solid var(--green)}
.sd-block .prose{color:var(--ink);white-space:pre-wrap}
.sd-block .prose p{margin-bottom:10px}
.process{list-style:none;counter-reset:step;display:flex;flex-wrap:wrap;gap:10px}
.process li{counter-increment:step;position:relative;flex:1 1 140px;background:var(--green-soft);border:1px solid #d1fae5;border-radius:10px;padding:14px 14px 14px 44px;font-size:14px;font-weight:600;color:#047857}
.process li::before{content:counter(step);position:absolute;left:12px;top:50%;transform:translateY(-50%);width:22px;height:22px;border-radius:50%;background:var(--green);color:#fff;font-size:12px;display:flex;align-items:center;justify-content:center}
.sd-side{position:sticky;top:86px;display:flex;flex-direction:column;gap:18px}
.side-card{background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:18px}
.side-card h3{font-size:16px;margin-bottom:10px;color:var(--dark)}
.side-card p{font-size:14px;color:var(--muted);margin-bottom:6px}
.side-card .btn{width:100%;text-align:center;margin-top:6px}
.side-card .adv{list-style:none}
.side-card .adv li{font-size:13px;color:var(--muted);padding:7px 0;border-bottom:1px dashed var(--line)}
.side-card .adv li:last-child{border-bottom:none}
.side-card .adv b{display:block;color:var(--ink);margin-bottom:2px}
@media(max-width:900px){
  .service-detail{grid-template-columns:1fr}
  .sd-side{position:static}
}

/* 下载中心 */
.dl-list{display:flex;flex-direction:column;gap:10px;margin:14px 0 28px}
.dl-item{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 18px;border:1px solid var(--line);border-radius:12px;background:#fff}
.dl-item:hover{border-color:var(--green)}
.dl-name{font-weight:600;color:var(--ink)}
.dl-soon{font-size:13px;color:var(--muted)}
/* 关于页公司照片 */
.company-photo{width:100%;border-radius:14px;margin-bottom:22px;border:1px solid var(--line)}