/* ===== 戴姆淇霖官网 全局样式 ===== */
:root{
  --c-primary:#185FA5;      /* 工业蓝 主色 */
  --c-dark:#042C53;          /* 深蓝 */
  --c-mid:#378ADD;           /* 中蓝 */
  --c-light:#E6F1FB;         /* 浅蓝底 */
  --c-lighter:#F4F9FE;
  --c-accent:#BA7517;        /* 强调橙(CTA) */
  --c-accent-light:#FAEEDA;
  --c-text:#1f2a36;
  --c-text-2:#5a6675;
  --c-text-3:#8a95a3;
  --c-border:#e3e8ee;
  --c-bg:#ffffff;
  --c-bg-2:#f6f8fb;
  --radius:10px;
  --shadow:0 2px 12px rgba(4,44,83,.06);
  --maxw:1200px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;max-width:100vw;overflow-x:hidden}
body{font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--c-text);background:var(--c-bg);line-height:1.7;font-size:15px;-webkit-font-smoothing:antialiased;max-width:100vw;overflow-x:hidden;-webkit-text-size-adjust:100%}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:64px 0}
.section-2{background:var(--c-bg-2)}
.txt-c{text-align:center}
.muted{color:var(--c-text-2)}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:2px;color:var(--c-primary);font-weight:600;text-transform:uppercase;margin-bottom:10px}
.h2{font-size:30px;font-weight:700;color:var(--c-dark);letter-spacing:.5px}
.h2 .sub{display:block;font-size:15px;font-weight:400;color:var(--c-text-2);margin-top:8px;letter-spacing:0}
.sec-head{margin-bottom:40px}
.sec-head .h2{display:inline-block}
.lead{color:var(--c-text-2);max-width:760px;margin:14px auto 0}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 30px;border-radius:8px;font-size:15px;font-weight:600;cursor:pointer;border:none;transition:.2s}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-dark)}
.btn-outline{background:transparent;color:var(--c-primary);border:1.5px solid var(--c-primary)}
.btn-outline:hover{background:var(--c-light)}
.btn-accent{background:var(--c-accent);color:#fff}
.btn-accent:hover{filter:brightness(1.08)}
.arrow::after{content:"→";margin-left:4px}

/* ===== 顶部公告条 ===== */
.topbar{background:var(--c-dark);color:#cfe2f3;font-size:13px}
.topbar .container{display:flex;justify-content:space-between;align-items:center;height:38px}
.topbar a{color:#cfe2f3}
.topbar .hot{color:#ffd27a;font-weight:600}

/* ===== 导航 ===== */
.header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--c-border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:12px}
.logo-mark{width:44px;height:44px;border-radius:9px;background:linear-gradient(135deg,var(--c-primary),var(--c-dark));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:18px;letter-spacing:1px}
.logo-text b{display:block;font-size:19px;color:var(--c-dark);letter-spacing:1px}
.logo-text span{display:block;font-size:11px;color:var(--c-text-3);letter-spacing:2px;text-transform:uppercase}
.menu{display:flex;gap:6px;align-items:center}
.menu a{padding:10px 16px;border-radius:8px;font-size:15px;color:var(--c-text);font-weight:500;transition:.15s}
.menu a:hover,.menu a.active{color:var(--c-primary);background:var(--c-light)}
.nav-cta{display:flex;align-items:center;gap:14px}
.nav-phone{font-size:14px;color:var(--c-text-2)}
.nav-phone b{color:var(--c-primary);font-size:18px;letter-spacing:.5px}

/* ===== Hero ===== */
.hero{position:relative;background:linear-gradient(120deg,#042C53 0%,#0C447C 55%,#185FA5 100%);color:#fff;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 20%,rgba(55,138,221,.35),transparent 45%)}
.hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;padding:70px 24px 80px}
.hero h1{font-size:42px;line-height:1.25;font-weight:800;letter-spacing:1px}
.hero h1 em{color:#7fc4ff;font-style:normal}
.hero p.tagline{font-size:17px;color:#cfe2f3;margin:20px 0 30px;max-width:560px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero .btn-primary{background:#fff;color:var(--c-dark)}
.hero .btn-outline{color:#fff;border-color:rgba(255,255,255,.5)}
.hero .btn-outline:hover{background:rgba(255,255,255,.12)}
.hero-stats{display:flex;gap:36px;margin-top:42px}
.hero-stats .n{font-size:30px;font-weight:800;color:#ffd27a}
.hero-stats .l{font-size:13px;color:#a9c6e8}
.hero-card{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.18);border-radius:16px;padding:26px;backdrop-filter:blur(4px)}
.hero-card h3{font-size:16px;margin-bottom:16px;color:#fff}
.hero-card .case-row{display:flex;align-items:center;gap:12px;padding:11px 0;border-bottom:1px dashed rgba(255,255,255,.16)}
.hero-card .case-row:last-child{border-bottom:none}
.hero-card .badge{flex:0 0 auto;width:30px;height:30px;border-radius:50%;background:rgba(127,196,255,.2);color:#7fc4ff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700}
.hero-card .case-row b{font-size:14px}
.hero-card .case-row span{font-size:12px;color:#a9c6e8;display:block}

/* ===== 产品概览 ===== */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.prod-card{background:#fff;border:1px solid var(--c-border);border-radius:var(--radius);overflow:hidden;transition:.2s;cursor:pointer;display:flex;flex-direction:column}
.prod-card:hover{border-color:var(--c-mid);box-shadow:var(--shadow);transform:translateY(-3px)}
.prod-card .pic{height:160px;background:var(--c-light);background-position:center;background-repeat:no-repeat;background-size:contain;display:flex;align-items:center;justify-content:center;color:var(--c-primary);font-size:14px;font-weight:600;text-align:center;padding:0 14px}
.prod-card h3{font-size:16px;color:var(--c-dark);margin:14px 16px 6px}
.prod-card p{font-size:13px;color:var(--c-text-2);line-height:1.6;margin:0 16px}
.prod-card .more{display:inline-block;margin:10px 16px 16px;font-size:13px;color:var(--c-primary);font-weight:600}

/* ===== 核心优势 ===== */
.adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.adv-item{text-align:center;padding:30px 18px}
.adv-num{font-size:13px;color:var(--c-primary);font-weight:700;letter-spacing:2px}
.adv-item h3{font-size:17px;color:var(--c-dark);margin:12px 0 10px}
.adv-item p{font-size:13.5px;color:var(--c-text-2)}

/* ===== 工程案例 ===== */
.case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.case-card{border-radius:var(--radius);overflow:hidden;border:1px solid var(--c-border);background:#fff;transition:.2s}
.case-card:hover{box-shadow:var(--shadow)}
.case-thumb{height:200px;background:linear-gradient(135deg,#0C447C,#185FA5);position:relative;display:flex;align-items:flex-end;padding:18px}
.case-thumb.c2{background:linear-gradient(135deg,#27500A,#639922)}
.case-thumb.c3{background:linear-gradient(135deg,#412402,#854F0B)}
.case-thumb.c4{background:linear-gradient(135deg,#3C3489,#534AB7)}
.case-thumb .tag{position:absolute;top:14px;left:14px;background:rgba(255,255,255,.92);color:var(--c-dark);font-size:12px;font-weight:700;padding:4px 12px;border-radius:20px}
.case-thumb .img-ph{color:rgba(255,255,255,.85);font-size:14px;width:100%;height:100%}
.case-body{padding:20px}
.case-body h3{font-size:17px;color:var(--c-dark);margin-bottom:8px}
.case-body p{font-size:13.5px;color:var(--c-text-2)}

/* ===== 信任条 ===== */
.trust-band{background:var(--c-dark);color:#fff;padding:46px 0}
.trust-band .container{display:flex;justify-content:space-around;flex-wrap:wrap;gap:20px;text-align:center}
.trust-item .n{font-size:34px;font-weight:800;color:#ffd27a}
.trust-item .l{font-size:14px;color:#a9c6e8;margin-top:4px}

/* ===== 询盘CTA ===== */
.cta-band{background:linear-gradient(120deg,var(--c-primary),var(--c-dark));color:#fff;text-align:center;padding:56px 0}
.cta-band h2{font-size:28px;font-weight:700;margin-bottom:12px}
.cta-band p{color:#cfe2f3;margin-bottom:24px}

/* ===== 页脚 ===== */
.footer{background:#06243f;color:#9fb6cf;padding:54px 0 0}
.footer .container{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:36px}
.footer h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer li{font-size:13.5px;line-height:2.1}
.footer .brand-line{font-size:13.5px;line-height:1.9;color:#9fb6cf}
.footer .contact-line b{color:#ffd27a;font-size:18px;display:block;margin-top:6px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:40px;padding:18px 0;text-align:center;font-size:12.5px;color:#6f8aa8}

/* ===== 二级页通用 ===== */
.page-hero{background:linear-gradient(120deg,#042C53,#0C447C);color:#fff;padding:54px 0}
.page-hero h1{font-size:32px;font-weight:700}
.page-hero .crumb{font-size:13px;color:#a9c6e8;margin-top:10px}
.breadcrumb{font-size:13px;color:var(--c-text-3);padding:18px 0}
.breadcrumb a:hover{color:var(--c-primary)}

/* 产品列表 */
.cat-tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:30px}
.cat-tabs a{padding:8px 18px;border-radius:20px;background:var(--c-bg-2);font-size:14px;color:var(--c-text-2);border:1px solid var(--c-border)}
.cat-tabs a.on,.cat-tabs a:hover{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}
.prod-list{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.prod-tile{border:1px solid var(--c-border);border-radius:var(--radius);overflow:hidden;background:#fff;transition:.2s}
.prod-tile:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.prod-tile .ph{height:170px;background:linear-gradient(135deg,var(--c-light),#d6e8f7);display:flex;align-items:center;justify-content:center;color:var(--c-primary);font-size:15px;font-weight:600}
.prod-tile .info{padding:16px}
.prod-tile .info h3{font-size:15.5px;color:var(--c-dark)}
.prod-tile .info .meta{font-size:12.5px;color:var(--c-text-3);margin-top:6px}
.prod-tile .info .price{font-size:13px;color:var(--c-accent);font-weight:700;margin-top:8px}

/* 产品详情 */
.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.detail-gallery .main-img{height:380px;background:linear-gradient(135deg,var(--c-light),#cfe2f7);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:var(--c-primary);font-size:18px;font-weight:600}
.detail-thumbs{display:flex;gap:10px;margin-top:12px}
.detail-thumbs .t{width:80px;height:80px;border-radius:8px;background:var(--c-bg-2);border:1px solid var(--c-border)}
.detail-thumbs .t.on{border-color:var(--c-primary)}
.detail-info h1{font-size:26px;color:var(--c-dark)}
.detail-info .sku{font-size:13px;color:var(--c-text-3);margin:8px 0 18px}
.spec-table{width:100%;border-collapse:collapse;margin:18px 0}
.spec-table th,.spec-table td{border:1px solid var(--c-border);padding:11px 14px;font-size:14px;text-align:left}
.spec-table th{background:var(--c-light);color:var(--c-dark);font-weight:600;width:34%}

/* 关于我们 */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:center}
.about-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:26px}
.about-stats .box{background:var(--c-light);border-radius:var(--radius);padding:20px}
.about-stats .n{font-size:28px;font-weight:800;color:var(--c-primary)}
.about-stats .l{font-size:13px;color:var(--c-text-2)}
.timeline{position:relative;padding-left:28px}
.timeline::before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;background:var(--c-border)}
.tl-item{position:relative;padding-bottom:26px}
.tl-item::before{content:"";position:absolute;left:-26px;top:6px;width:12px;height:12px;border-radius:50%;background:var(--c-primary);border:2px solid #fff;box-shadow:0 0 0 2px var(--c-primary)}
.tl-item h4{font-size:15px;color:var(--c-dark)}
.tl-item span{font-size:13px;color:var(--c-primary);font-weight:600}
.tl-item p{font-size:13.5px;color:var(--c-text-2);margin-top:4px}

/* 联系我们 */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.contact-card{background:var(--c-bg-2);border-radius:var(--radius);padding:30px}
.contact-card h3{font-size:17px;color:var(--c-dark);margin-bottom:16px}
.contact-card .row{display:flex;gap:14px;padding:12px 0;border-bottom:1px solid var(--c-border)}
.contact-card .row:last-child{border:none}
.contact-card .ico{width:38px;height:38px;border-radius:8px;background:var(--c-light);color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-size:18px;flex:0 0 auto}
.contact-card .row b{display:block;font-size:14px;color:var(--c-dark)}
.contact-card .row span{font-size:13.5px;color:var(--c-text-2)}
.form-field{margin-bottom:16px}
.form-field label{display:block;font-size:13px;color:var(--c-text-2);margin-bottom:6px}
.form-field input,.form-field textarea,.form-field select{width:100%;padding:11px 14px;border:1px solid var(--c-border);border-radius:8px;font-size:14px;font-family:inherit}
.form-field input:focus,.form-field textarea:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 3px var(--c-light)}
.map-ph{height:260px;background:linear-gradient(135deg,#eef3f8,#dbe6f0);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:var(--c-text-3);font-size:14px;margin-top:20px}

/* ===== 管理后台 ===== */
.admin-body{background:#eef2f7;font-family:"PingFang SC","Microsoft YaHei",sans-serif}
.admin-layout{display:grid;grid-template-columns:220px 1fr;min-height:100vh}
.admin-side{background:#0C447C;color:#cfe2f3;padding:0;position:sticky;top:0;height:100vh;overflow-y:auto}
.admin-side .brand{padding:20px 22px;border-bottom:1px solid rgba(255,255,255,.1);color:#fff}
.admin-side .brand b{font-size:16px;display:block}
.admin-side .brand span{font-size:11px;color:#7fc4ff}
.admin-side .nav-grp{padding:14px 0}
.admin-side .nav-grp-title{font-size:11px;color:#6f8aa8;padding:6px 22px;letter-spacing:1px;text-transform:uppercase}
.admin-side a{display:flex;align-items:center;gap:10px;padding:10px 22px;font-size:14px;color:#cfe2f3}
.admin-side a.on,.admin-side a:hover{background:rgba(255,255,255,.08);color:#fff;border-left:3px solid #7fc4ff;padding-left:19px}
.admin-main{padding:0}
.admin-top{background:#fff;height:58px;display:flex;align-items:center;justify-content:space-between;padding:0 26px;border-bottom:1px solid var(--c-border);position:sticky;top:0;z-index:10}
.admin-top .crumb{font-size:14px;color:var(--c-text-2)}
.admin-top .crumb b{color:var(--c-dark)}
.admin-top .uinfo{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--c-text-2)}
.admin-top .avatar{width:34px;height:34px;border-radius:50%;background:var(--c-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:600}
.admin-content{padding:26px}
.kpi-row{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:24px}
.kpi-card{background:#fff;border-radius:10px;padding:20px;border:1px solid var(--c-border)}
.kpi-card .l{font-size:13px;color:var(--c-text-2)}
.kpi-card .v{font-size:28px;font-weight:800;color:var(--c-dark);margin-top:6px}
.kpi-card .d{font-size:12px;margin-top:4px}
.kpi-card .d.up{color:#3B6D11}
.kpi-card .d.down{color:#A32D2D}
.kpi-card .ico{float:right;width:40px;height:40px;border-radius:8px;background:var(--c-light);color:var(--c-primary);display:flex;align-items:center;justify-content:center;font-size:20px}
.panel{background:#fff;border-radius:10px;border:1px solid var(--c-border);margin-bottom:22px}
.panel-head{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid var(--c-border)}
.panel-head h3{font-size:15px;color:var(--c-dark)}
.panel-body{padding:20px}
.admin-table{width:100%;border-collapse:collapse;font-size:13.5px}
.admin-table th{background:var(--c-bg-2);color:var(--c-text-2);text-align:left;padding:11px 14px;font-weight:600;font-size:13px}
.admin-table td{padding:11px 14px;border-bottom:1px solid var(--c-border)}
.admin-table tr:hover td{background:#fafcff}
.tag-pill{display:inline-block;padding:3px 10px;border-radius:12px;font-size:12px;font-weight:600}
.tag-green{background:#EAF3DE;color:#3B6D11}
.tag-blue{background:var(--c-light);color:var(--c-primary)}
.tag-amber{background:var(--c-accent-light);color:var(--c-accent)}
.tag-gray{background:#f1efe8;color:#5F5E5A}
.chart-bars{display:flex;align-items:flex-end;gap:14px;height:180px;padding-top:10px}
.chart-bars .bar{flex:1;background:linear-gradient(var(--c-mid),var(--c-primary));border-radius:6px 6px 0 0;position:relative;min-height:8px}
.chart-bars .bar span{position:absolute;bottom:-22px;left:0;right:0;text-align:center;font-size:11px;color:var(--c-text-3)}
.chart-bars .bar em{position:absolute;top:-20px;left:0;right:0;text-align:center;font-size:11px;color:var(--c-dark);font-style:normal;font-weight:600}
.admin-grid-2{display:grid;grid-template-columns:1.5fr 1fr;gap:22px}

/* 响应式 */
@media(max-width:980px){
  .hero .container,.prod-grid,.adv-grid,.case-grid,.about-grid,.contact-grid,.detail-grid,.admin-grid-2{grid-template-columns:1fr}
  .prod-list{grid-template-columns:repeat(2,1fr)}
  .kpi-row{grid-template-columns:repeat(2,1fr)}
  .footer .container{grid-template-columns:1fr 1fr}
  .menu{display:none}
  .admin-layout{grid-template-columns:1fr}
  .admin-side{position:fixed;left:-220px;z-index:100}
}
@media(max-width:600px){
  .prod-list{grid-template-columns:1fr}
  .hero h1{font-size:30px}
}
/* ===== 汉堡菜单按钮 ===== */
.menu-toggle{display:none;align-items:center;justify-content:center;width:42px;height:42px;border-radius:8px;border:1.5px solid var(--c-border);background:#fff;cursor:pointer;flex-shrink:0;position:relative;z-index:60}
.menu-toggle span{display:block;width:20px;height:2px;background:var(--c-dark);border-radius:2px;position:relative;transition:.25s}
.menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;width:20px;height:2px;background:var(--c-dark);border-radius:2px;left:0;transition:.25s}
.menu-toggle span::before{top:-6px}
.menu-toggle span::after{top:6px}
.menu-toggle.active span{background:transparent}
.menu-toggle.active span::before{transform:rotate(45deg);top:0}
.menu-toggle.active span::after{transform:rotate(-45deg);top:0}

/* ===== 移动端导航面板 ===== */
.mobile-nav{display:none!important;position:fixed;inset:0;z-index:55;background:rgba(4,44,83,.4);backdrop-filter:blur(4px);opacity:0;transition:opacity .25s;visibility:hidden;pointer-events:none}
.mobile-nav.show{display:block!important;opacity:1;visibility:visible;pointer-events:none}
.mobile-nav .panel{position:absolute;top:0;right:0;width:min(300px,85vw);height:100vh;background:#fff;box-shadow:-8px 0 30px rgba(0,0,0,.15);transform:translateX(100%);transition:transform .3s ease;padding:24px 0;overflow-y:auto}
.mobile-nav.show .panel{transform:translateX(0);pointer-events:auto}
.mobile-nav .panel-header{padding:0 22px 18px;border-bottom:1px solid var(--c-border);margin-bottom:12px}
.mobile-nav .panel-header b{font-size:17px;color:var(--c-dark)}
.mobile-nav .panel-header span{font-size:12px;color:var(--c-text-3)}
.mobile-nav a{display:flex;align-items:center;padding:14px 22px;font-size:15.5px;color:var(--c-text);font-weight:500;transition:.15s;border-left:3px solid transparent}
.mobile-nav a:hover,.mobile-nav a.on{color:var(--c-primary);background:var(--c-light);border-left-color:var(--c-primary)}
.mobile-nav .m-phone{margin:20px 22px;padding:16px;background:var(--c-light);border-radius:10px;text-align:center}
.mobile-nav .m-phone b{font-size:22px;color:var(--c-primary);display:block;margin-top:4px}
.mobile-nav .m-cta{margin:0 22px 24px}
.mobile-nav .m-cta .btn{width:100%;justify-content:center}
.nav-overlay{position:fixed;inset:0;z-index:54;display:none}
.nav-overlay.show{display:block}

/* ===== 响应式：平板及以下 (≤980px) ===== */
@media(max-width:980px){
  /* 汉堡按钮显示 */
  .menu-toggle{display:flex}
  /* 导航区：隐藏桌面菜单和右侧CTA，显示汉堡 */
  .menu{display:none!important}
  .nav-cta{display:none!important}
  .topbar{display:none!important}
  .nav-cta{display:none!important;visibility:hidden;height:0;padding:0;margin:0;overflow:hidden;position:absolute;left:-9999px}
  .header{max-width:100vw;overflow-x:hidden;position:relative}
  .nav{max-width:100vw;overflow-x:hidden;position:relative}
  /* 布局折叠 */
  .hero .container,.prod-grid,.adv-grid,.case-grid,.about-grid,.contact-grid,.detail-grid,.admin-grid-2{grid-template-columns:1fr}
  .prod-list{grid-template-columns:repeat(2,1fr)}
  .kpi-row{grid-template-columns:repeat(2,1fr)}
  .footer .container{grid-template-columns:1fr 1fr}
  .admin-layout{grid-template-columns:1fr}
  .admin-side{position:fixed;left:-220px;z-index:100}
  /* 顶部公告条：允许换行 + 缩小字号防溢出 */
  .topbar .container{flex-wrap:wrap;height:auto;padding:8px 24px;gap:4px;justify-content:center;text-align:center;font-size:12px}
  .topbar .hot{display:block;margin-top:2px}
  /* Hero 数据栏：换行 */
  .hero-stats{flex-wrap:wrap;gap:20px;justify-content:center}
  .hero-stats>div{text-align:center;min-width:80px}
  /* Hero 卡片：平板及以下隐藏（太宽，推挤内容） */
  .hero-card{display:none}
  /* 产品卡片 */
  .prod-card{padding:18px}
  /* CTA 区域 */
  .cta-band{padding:40px 0}
  .cta-band h2{font-size:22px}
  /* 页脚 */
  .footer{padding:36px 0 0}
  .footer .container{gap:24px}
  /* 二级页 hero */
  .page-hero{padding:40px 0}
  .page-hero h1{font-size:26px}
  /* 联系页表单 */
  .contact-grid{gap:24px}
  /* 产品详情 */
  .detail-gallery .main-img{height:280px}
  /* 关于我们 */
  .about-grid{gap:30px}
  .about-stats{grid-template-columns:repeat(2,1fr)}
}

/* ===== 响应式：手机 (≤600px) ===== */
@media(max-width:600px){
  body{-webkit-text-size-adjust:100%}
  html,body{overflow-x:hidden}
  .section{padding:44px 0}
  .container{padding:0 16px}
  .h2{font-size:24px}
  .sec-head{margin-bottom:28px}
  /* 导航高度缩减 */
  .nav{height:58px}
  .logo-mark{width:38px;height:38px;font-size:15px}
  .logo-text b{font-size:16px}
  .logo-text span{font-size:10px}
  /* Hero */
  .hero .container{padding:44px 16px 56px}
  .hero h1{font-size:28px;line-height:1.3}
  .hero p.tagline{font-size:15px;margin:16px 0 24px}
  .hero-cta{flex-direction:column}
  .hero-cta .btn{width:100%;justify-content:center}
  .hero-stats{gap:16px;margin-top:28px}
  .hero-stats .n{font-size:24px}
  /* 隐藏 Hero 右侧卡片（手机上太占空间） */
  .hero-card{display:none}
  /* 产品网格：单列或保持2列 */
  .prod-grid{grid-template-columns:1fr 1fr;gap:12px}
  .prod-card{padding:14px}
  .prod-ico{width:40px;height:40px;font-size:20px}
  .prod-card h3{font-size:14px}
  .prod-card p{display:none} /* 手机端隐藏描述，更紧凑 */
  .prod-card .more{font-size:12px}
  /* 优势 */
  .adv-grid{grid-template-columns:1fr 1fr;gap:14px}
  .adv-item{padding:20px 14px}
  .adv-item h3{font-size:15px}
  /* 案例 */
  .case-grid{grid-template-columns:1fr;gap:16px}
  .case-thumb{height:160px}
  .case-body{padding:16px}
  .case-body h3{font-size:15px}
  /* 信任条 */
  .trust-band{padding:32px 0}
  .trust-item .n{font-size:26px}
  /* CTA */
  .cta-band{padding:36px 0}
  .cta-band h2{font-size:20px}
  .cta-band p{font-size:14px}
  /* 页脚：单列 */
  .footer .container{grid-template-columns:1fr;gap:28px;text-align:center}
  .footer li{text-align:center}
  .footer-bottom{font-size:11.5px;padding:14px 0}
  /* 产品列表 */
  .prod-list{grid-template-columns:1fr}
  .cat-tabs{gap:8px}
  .cat-tabs a{padding:7px 14px;font-size:13px}
  /* 产品详情 */
  .detail-grid{gap:24px}
  .detail-gallery .main-img{height:220px}
  .detail-thumbs .t{width:60px;height:60px}
  .detail-info h1{font-size:21px}
  .spec-table th,.spec-table td{padding:8px 10px;font-size:13px}
  /* 关于 */
  .about-grid{grid-template-columns:1fr;gap:24px}
  .about-stats{grid-template-columns:1fr 1fr;gap:12px}
  .about-stats .n{font-size:24px}
  /* 联系 */
  .contact-grid{grid-template-columns:1fr}
  .contact-card{padding:20px}
  .map-ph{height:200px}
  /* 按钮：保证触控区域 */
  .btn{min-height:44px;padding:12px 24px;font-size:14px}
  /* 面包屑 */
  .breadcrumb{font-size:12.5px;padding:14px 0}
  /* 管理后台 KPI */
  .kpi-row{grid-template-columns:1fr 1fr;gap:12px}
  .admin-grid-2{grid-template-columns:1fr}
  .admin-content{padding:16px}
  .admin-top{padding:0 14px}
}

/* ===== 响应式：超小屏 (≤380px) ===== */
@media(max-width:380px){
  .hero h1{font-size:24px}
  .prod-grid{grid-template-columns:1fr}
  .adv-grid{grid-template-columns:1fr}
  .trust-band .container{flex-direction:column;gap:16px}
}
/* ===== 全局溢出安全网（微信字体缩放适配）===== */
html,body{max-width:100vw;overflow-x:hidden;overflow-y:auto}
.topbar,.nav,.header,.hero,.container{max-width:100vw;overflow-x:hidden}
.hero p.tagline{word-break:break-word;overflow-wrap:break-word}
.hero-stats{max-width:100%;overflow:hidden}
/* 确保移动端导航面板完全隐藏 */
.mobile-nav:not(.show){display:none!important;visibility:hidden!important;pointer-events:none!important}
/* 20260824 case page taller thumbs */
.case-grid.case-lg .case-thumb{height:320px}
.case-grid.case-lg .case-thumb .img-ph{background-size:cover;background-position:center}
@media(max-width:980px){.case-grid.case-lg .case-thumb{height:260px}}
@media(max-width:600px){.case-grid.case-lg .case-thumb{height:220px}}
.logo-img{height:50px;width:auto;display:block}
@media(max-width:980px){.logo-img{height:42px}}