*{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.75;font-size:15.5px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block;object-fit:cover}
h1,h2,h3,h4{line-height:1.28;font-weight:700;letter-spacing:-.2px}
svg{flex:0 0 auto}
button{font-family:inherit}
.wrap{max-width:1220px;margin:0 auto;padding:0 24px}
.sec{padding:80px 0}
.sec-soft{background:var(--soft-bg)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;font-size:15px;font-weight:600;border-radius:var(--r);border:1px solid transparent;padding:12px 26px;transition:.18s;cursor:pointer;font-family:inherit;line-height:1.4}
.btn-pill{background:var(--brand);color:#fff;border-radius:999px;padding:10px 24px;font-size:14.5px}
.btn-pill:hover{background:var(--brand-d)}
.btn-solid{background:var(--brand);color:#fff}
.btn-solid:hover{background:var(--brand-d)}
.btn-line{border-color:var(--line-strong);color:var(--ink);background:var(--bg)}
.btn-line:hover{border-color:var(--brand);color:var(--brand)}
.btn-white{background:#fff;color:var(--brand);font-weight:700}
.btn-white:hover{opacity:.9}

/* 导航 */
.hd{background:var(--hd-bg);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:60}
.hd-in{display:flex;align-items:center;justify-content:space-between;gap:22px;height:82px}
.logo{display:flex;align-items:center;gap:12px}
.logo-mark{width:44px;height:44px;border-radius:var(--r);background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:22px;letter-spacing:-1px}
.logo-txt b{display:block;font-size:22px;letter-spacing:4px;line-height:1.2;color:var(--ink);font-weight:800}
.logo-txt i{display:block;font-style:normal;font-size:10.5px;color:var(--sub);letter-spacing:.9px;margin-top:2px}
.nav{display:flex;gap:2px}
.nav a{padding:9px 14px;font-size:15.5px;color:var(--nav-fg);border-radius:var(--r);position:relative}
.nav a:hover{color:var(--brand)}
.nav a.on{color:var(--brand);font-weight:700}
.nav a.on::after{content:"";position:absolute;left:14px;right:14px;bottom:-3px;height:2px;background:var(--brand);border-radius:2px}
.hd-right{display:flex;align-items:center;gap:14px}
.hd-tel{font-size:15px;color:var(--sub);letter-spacing:.6px}

/* 首屏 */
.hero{background:var(--hero-bg);padding:66px 0 72px;overflow:hidden}
.hero-in{display:grid;grid-template-columns:1.02fr 1fr;gap:56px;align-items:center}
.eyebrow{display:flex;align-items:center;gap:10px;font-size:13px;letter-spacing:1.8px;color:var(--brand);font-weight:700;margin-bottom:20px}
.eyebrow i{display:block;width:26px;height:2px;background:var(--brand)}
.hero h1{font-size:var(--h1);line-height:1.24;margin-bottom:18px;letter-spacing:-.6px}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero .lead{font-size:16px;color:var(--sub);max-width:540px;margin-bottom:26px}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:34px}
.feats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;border-top:1px solid var(--line);padding-top:22px}
.feats b{display:block;font-size:15.5px;margin-bottom:4px}
.feats span{font-size:13px;color:var(--sub);line-height:1.6;display:block}
.hero-pic{position:relative}
.hero-pic img{width:100%;height:440px;border-radius:var(--r-lg)}
.badge{position:absolute;left:-14px;bottom:24px;background:var(--brand);color:#fff;border-radius:var(--r);padding:11px 19px;text-align:center;line-height:1.15;box-shadow:0 10px 24px rgba(0,0,0,.16)}
.badge b{display:block;font-size:26px}
.badge span{font-size:11.5px;letter-spacing:1.2px;opacity:.92}
.dimcard{position:absolute;right:16px;bottom:16px;background:rgba(255,255,255,.95);border-radius:var(--r);padding:9px 15px;font-size:12.5px;font-weight:600;color:var(--ink);line-height:1.5;box-shadow:0 6px 18px rgba(0,0,0,.10)}
.dimcard small{display:block;font-size:11px;color:var(--sub);font-weight:400}
.dimline{position:absolute;left:22%;right:22%;top:52%;height:1px;background:rgba(255,255,255,.9);box-shadow:0 0 6px rgba(0,0,0,.25)}
.dimline::before,.dimline::after{content:"";position:absolute;top:-6px;width:1px;height:13px;background:rgba(255,255,255,.9)}
.dimline::before{left:0}
.dimline::after{right:0}
.dimline span{position:absolute;top:-27px;left:50%;transform:translateX(-50%);font-size:12px;color:#fff;background:rgba(0,0,0,.42);padding:2px 9px;border-radius:4px;letter-spacing:.6px;white-space:nowrap}

/* ===== 品类选择（放大版） ===== */
.pick-h{font-size:32px;margin-bottom:10px;letter-spacing:-.5px}
.pick-sub{color:var(--sub);font-size:15.5px;margin-bottom:34px}
.tabs{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:40px}
.tab{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:30px 20px 28px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:15px;font-size:20px;font-weight:700;color:var(--ink);transition:.18s;cursor:pointer;text-align:center;min-height:178px}
.tab svg{color:var(--brand);opacity:.92}
.tab span{letter-spacing:.6px}
.tab small{font-size:13px;font-weight:400;color:var(--sub);line-height:1.5;letter-spacing:.2px}
.tab:hover{border-color:var(--line-strong);transform:translateY(-3px);box-shadow:0 10px 24px rgba(0,0,0,.07)}
.tab.on{border-color:var(--brand);box-shadow:inset 0 0 0 1px var(--brand),0 10px 26px rgba(0,0,0,.08)}
.tab.on small{color:var(--brand)}
.tab.on::before{content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:64px;height:3px;background:var(--brand);border-radius:0 0 3px 3px}
.tab-extra{border-style:dashed;background:transparent}
.tab-extra svg{color:var(--sub);opacity:.75}
.tab-extra:hover{border-color:var(--brand)}
.tab-extra:hover svg{color:var(--brand);opacity:1}

/* 规格条（随品类变化） */
.specbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:20px 22px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);margin-bottom:26px}
.specbar-l{font-size:14px;color:var(--sub);margin-right:6px;font-weight:600;white-space:nowrap}
.spec{border:1px solid var(--line);border-radius:6px;padding:9px 18px;font-size:15px;font-weight:600;color:var(--ink);position:relative;transition:.18s;cursor:pointer;background:var(--soft2)}
.spec:hover{border-color:var(--brand);color:var(--brand)}
.spec.hot{border-color:var(--brand);color:var(--brand);background:#fff}
.spec.hot::after{content:"现货";position:absolute;top:-9px;right:-7px;font-size:10px;background:var(--brand);color:#fff;border-radius:3px;padding:1px 6px;letter-spacing:.5px;font-weight:600}

/* 横滑产品条 */
.rail-wrap{position:relative}
.rail{display:flex;gap:20px;overflow-x:auto;padding:4px 2px 16px;scroll-snap-type:x proximity;scrollbar-width:none;-ms-overflow-style:none;cursor:grab}
.rail::-webkit-scrollbar{display:none}
.rail.dragging{cursor:grabbing;scroll-snap-type:none}
.rail.dragging *{pointer-events:none}
.rcard{flex:0 0 310px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;display:flex;flex-direction:column;scroll-snap-align:start;transition:.2s}
.rcard:hover{border-color:var(--brand);transform:translateY(-3px);box-shadow:0 12px 26px rgba(0,0,0,.07)}
.rcard .ph{height:202px;overflow:hidden;background:var(--soft2)}
.rcard .ph img{width:100%;height:100%;transition:.4s;pointer-events:none}
.rcard:hover .ph img{transform:scale(1.04)}
.rcard .pb{padding:18px 18px 20px;flex:1;display:flex;flex-direction:column}
.rcard h3{font-size:17px;margin-bottom:8px}
.rcard h3 i{font-style:normal;font-size:11px;font-weight:600;color:#fff;background:var(--brand);border-radius:3px;padding:2px 7px;margin-left:7px;vertical-align:2px}
.rcard p{font-size:13.5px;color:var(--sub);flex:1;line-height:1.68}
.rcard .pz{display:flex;gap:6px;flex-wrap:wrap;margin-top:15px}
.rcard .pz span{font-size:12px;color:var(--sub);border:1px solid var(--line);border-radius:4px;padding:2px 9px}
.rail-btn{position:absolute;top:42%;transform:translateY(-50%);width:46px;height:46px;border-radius:50%;background:#fff;border:1px solid var(--line-strong);box-shadow:0 6px 18px rgba(0,0,0,.12);display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:5;color:var(--ink);transition:.18s}
.rail-btn:hover{background:var(--brand);border-color:var(--brand);color:#fff}
.rail-btn.prev{left:-19px}
.rail-btn.next{right:-19px}
.rail-btn[hidden]{display:none}
.rail-count{font-size:13px;color:var(--sub);margin-left:auto;white-space:nowrap}

/* 区块标题 */
.sec-top{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:34px;flex-wrap:wrap}
.sec-top h2{font-size:30px;margin-bottom:9px;letter-spacing:-.5px}
.sec-top p{color:var(--sub);font-size:15px}
.more{font-size:15px;font-weight:700;color:var(--brand);white-space:nowrap}

/* 优势 */
.adv{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.adv .it{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:28px 24px}
.adv .ic{width:44px;height:44px;border-radius:var(--r);background:var(--soft-bg);color:var(--brand);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.adv b{display:block;font-size:17px;margin-bottom:8px}
.adv p{font-size:13.5px;color:var(--sub);line-height:1.72}

/* 安装案例 */
.case{padding:0 0 80px}
.case-box{position:relative;border-radius:var(--r-lg);overflow:hidden;height:420px}
.case-box img{width:100%;height:100%}
.case-ov{position:absolute;inset:0;background:linear-gradient(90deg,rgba(9,22,26,.78) 0%,rgba(9,22,26,.46) 46%,rgba(9,22,26,.06) 100%);display:flex;flex-direction:column;justify-content:center;padding:0 64px;color:#fff}
.case-eyebrow{font-size:11.5px;letter-spacing:3px;opacity:.8;margin-bottom:14px;font-weight:600}
.case-ov h2{font-size:32px;margin-bottom:12px}
.case-ov p{font-size:15px;opacity:.86;margin-bottom:24px;max-width:430px}

/* 文章卡 */
.agrid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.acard{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;display:flex;flex-direction:column;transition:.2s}
.acard:hover{border-color:var(--brand);transform:translateY(-3px);box-shadow:0 12px 26px rgba(0,0,0,.07)}
.acard .ph{height:175px;overflow:hidden}
.acard .ph img{width:100%;height:100%;transition:.4s}
.acard:hover .ph img{transform:scale(1.04)}
.acard .pb{padding:18px 18px 20px;flex:1;display:flex;flex-direction:column}
.acard h3{font-size:16.5px;margin-bottom:8px;line-height:1.5}
.acard p{font-size:13px;color:var(--sub);line-height:1.68;flex:1;margin-bottom:12px}
.acard .dt{font-size:12px;color:var(--sub);opacity:.72}

/* 合作对象 + 城市 */
.chan{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:44px}
.chan .it{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 22px;text-align:center}
.chan b{display:block;font-size:16.5px;margin-bottom:8px;color:var(--brand)}
.chan p{font-size:13px;color:var(--sub);line-height:1.72}
.cities-hd{font-size:15.5px;font-weight:700;margin-bottom:16px;display:flex;align-items:center;gap:10px}
.cities-hd::before{content:"";width:3px;height:16px;background:var(--brand);border-radius:2px}
.cities{display:grid;grid-template-columns:repeat(6,1fr);gap:10px}
.city{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:13px 8px;text-align:center;font-size:15px;font-weight:600;transition:.18s}
.city small{display:block;font-size:11.5px;color:var(--sub);font-weight:400;margin-top:2px}
.city:hover{border-color:var(--brand);color:var(--brand)}

/* 询价 */
.cta{background:var(--cta-bg);color:#fff;padding:76px 0}
.cta-in{display:grid;grid-template-columns:1fr 1.02fr;gap:56px;align-items:center}
.cta-txt h2{font-size:32px;margin-bottom:12px}
.cta-txt>p{color:var(--cta-sub);font-size:15px;margin-bottom:20px;max-width:440px}
.cta-txt ul{list-style:none;display:grid;gap:10px;margin-bottom:26px}
.cta-txt li{font-size:14.5px;color:var(--cta-sub)}
.cta-txt li::before{content:"— ";color:var(--cta-mark);font-weight:700}
form{background:#fff;border-radius:var(--r-lg);padding:28px;color:var(--ink)}
form .fr{margin-bottom:14px}
form label{display:block;font-size:13px;color:var(--sub);margin-bottom:6px;font-weight:600}
form input,form select,form textarea{width:100%;border:1px solid var(--line);border-radius:var(--r);padding:12px 14px;font-size:14.5px;font-family:inherit;background:var(--input-bg);color:var(--ink)}
form input:focus,form select:focus,form textarea:focus{outline:none;border-color:var(--brand)}
form .two{display:grid;grid-template-columns:1fr 1fr;gap:12px}
form button{width:100%;border:0;background:var(--brand);color:#fff;font-weight:700;font-size:16px;padding:15px;border-radius:var(--r);cursor:pointer;font-family:inherit;transition:.18s}
form button:hover{background:var(--brand-d)}
form .tip{font-size:12.5px;color:var(--sub);text-align:center;margin-top:10px}

/* 页脚 */
footer{background:var(--ft-bg);color:var(--ft-fg);border-top:1px solid var(--ft-line);padding:48px 0 0;font-size:14px}
.f-in{display:grid;grid-template-columns:1.6fr 1.1fr;gap:36px;padding-bottom:32px}
footer .logo-txt b{color:var(--ft-strong)}
footer .logo-txt i{color:var(--ft-fg)}
.f-links{display:flex;gap:22px;flex-wrap:wrap;margin:16px 0 14px}
.f-links a:hover{color:var(--brand)}
.f-slogan{font-size:13px;color:var(--ft-fg);opacity:.8;letter-spacing:.6px}
.f-r{text-align:right;display:grid;gap:7px;font-size:13.5px;align-content:start}
.f-r b{color:var(--ft-strong)}
footer .bar{border-top:1px solid var(--ft-line);padding:18px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px}

@media(max-width:1100px){
  .tabs{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:1000px){
  .hero-in,.cta-in,.f-in{grid-template-columns:1fr}
  .pgrid,.adv,.agrid{grid-template-columns:repeat(2,1fr)}
  .chan{grid-template-columns:repeat(2,1fr)}
  .cities{grid-template-columns:repeat(3,1fr)}
  nav.nav{display:none}
  .f-r{text-align:left}
  .case-ov{padding:0 28px}
  .case-ov h2{font-size:24px}
  .rail-btn{display:none}
}
@media(max-width:640px){
  .tabs{grid-template-columns:repeat(2,1fr);gap:12px}
  .tab{min-height:0;padding:20px 12px;font-size:17px;gap:10px}
  .tab svg{width:44px;height:44px}
  .adv,.agrid{grid-template-columns:1fr}
}

/* ===== 风格E：蓝白品牌风 ===== */
:root{
  --font:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",sans-serif;
  --brand:#1B4F9C; --brand-d:#15407F;
  --ink:#16233A; --sub:#64748B; --nav-fg:#33445C;
  --bg:#fff; --soft-bg:#EEF4FC; --soft2:#F5F8FD;
  --line:#E1E9F4; --line-strong:#BFCEE4;
  --r:8px; --r-lg:12px;
  --h1:47px;
  --hd-bg:#fff;
  --hero-bg:linear-gradient(180deg,#E4EFFC 0%,#F3F8FE 62%,#FFFFFF 100%);
  --cta-bg:#123C7A; --cta-sub:#BDD3F0; --cta-mark:#7FB2F0;
  --input-bg:#F6F9FD;
  --ft-bg:#0E3568; --ft-fg:#A8C1E0; --ft-strong:#fff; --ft-line:rgba(255,255,255,.13);
}
.t-E .hero h1{letter-spacing:-.8px}
.t-E .hero .lead{padding-left:14px;border-left:2px solid var(--brand)}
.t-E .hero-en{margin-top:34px;font-size:11px;letter-spacing:2.6px;color:var(--sub);opacity:.85;text-transform:uppercase}
.t-E .logo-mark{border-radius:50%}
.t-E .sec-soft{border-radius:0}

/* ---------- 首页首屏图片：后台「广告管理 → pid=1」可换；无广告时用 skin/img/hero.jpg ---------- */
.hero-pic img{width:100%;height:440px;object-fit:cover;border-radius:var(--r-lg)}

/* ---------- 品类卡图标：栏目上传图片则用图片，否则用内置图标 ---------- */
.tab-img{width:64px;height:64px;object-fit:contain;margin-bottom:2px}
.tab-ic{display:block;width:64px;height:64px;background-repeat:no-repeat;background-position:center;background-size:contain}
.tabs > *:nth-child(1) .tab-ic{background-image:url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2032%2032'%20fill='none'%20stroke='%231B4F9C'%20stroke-width='1.7'%20stroke-linecap='round'%20stroke-linejoin='round'%20width='64'%20height='64'%3E%3Crect%20x='5'%20y='7'%20width='22'%20height='16'%20rx='2'/%3E%3Cpath%20d='M5%2014h22'/%3E%3Cpath%20d='M13%2014v9M19%2014v9'/%3E%3Cpath%20d='M9%2027h14'/%3E%3C/svg%3E")}
.tabs > *:nth-child(2) .tab-ic{background-image:url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2032%2032'%20fill='none'%20stroke='%231B4F9C'%20stroke-width='1.7'%20stroke-linecap='round'%20stroke-linejoin='round'%20width='64'%20height='64'%3E%3Crect%20x='5'%20y='5'%20width='22'%20height='15'%20rx='2'/%3E%3Cpath%20d='M10%2012h12'/%3E%3Cpath%20d='M16%2020v7M11%2027h10'/%3E%3C/svg%3E")}
.tabs > *:nth-child(3) .tab-ic{background-image:url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2032%2032'%20fill='none'%20stroke='%231B4F9C'%20stroke-width='1.7'%20stroke-linecap='round'%20stroke-linejoin='round'%20width='64'%20height='64'%3E%3Cpath%20d='M4%2013h24c0%207.5-5.4%2011.5-12%2011.5S4%2020.5%204%2013z'/%3E%3Cpath%20d='M16%205v8'/%3E%3Cpath%20d='M13%205h6'/%3E%3C/svg%3E")}
.tabs > *:nth-child(4) .tab-ic{background-image:url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2032%2032'%20fill='none'%20stroke='%231B4F9C'%20stroke-width='1.7'%20stroke-linecap='round'%20stroke-linejoin='round'%20width='64'%20height='64'%3E%3Cpath%20d='M10%205h9v8h-9z'/%3E%3Cpath%20d='M6%2013h19c0%207.6-4.3%2012-9.5%2012S6%2020.6%206%2013z'/%3E%3Cpath%20d='M8%2029h15'/%3E%3C/svg%3E")}
.tabs > *:nth-child(5) .tab-ic{background-image:url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2032%2032'%20fill='none'%20stroke='%231B4F9C'%20stroke-width='1.7'%20stroke-linecap='round'%20stroke-linejoin='round'%20width='64'%20height='64'%3E%3Cpath%20d='M9%204h14v9H9z'/%3E%3Cpath%20d='M11%2013h10c0%208.4-2.4%2013-5%2013s-5-4.6-5-13z'/%3E%3Cpath%20d='M12%2029h8'/%3E%3C/svg%3E")}
.tabs > *:nth-child(6) .tab-ic{background-image:url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2032%2032'%20fill='none'%20stroke='%231B4F9C'%20stroke-width='1.7'%20stroke-linecap='round'%20stroke-linejoin='round'%20width='64'%20height='64'%3E%3Cpath%20d='M3%2019h26v6H3z'/%3E%3Cellipse%20cx='16'%20cy='18'%20rx='8.5'%20ry='4'/%3E%3Cpath%20d='M3%2019c0-2.6%205.8-4%2013-4s13%201.4%2013%204'/%3E%3C/svg%3E")}
.tabs > *:nth-child(7) .tab-ic{background-image:url("data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2032%2032'%20fill='none'%20stroke='%231B4F9C'%20stroke-width='1.7'%20stroke-linecap='round'%20stroke-linejoin='round'%20width='64'%20height='64'%3E%3Cpath%20d='M5%2021h22v6H5z'/%3E%3Cpath%20d='M16%2021V9'/%3E%3Cpath%20d='M11%205h10'/%3E%3Cpath%20d='M9%2027v2M23%2027v2'/%3E%3C/svg%3E")}
.tab small{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.tab .cnt{font-size:11.5px;color:var(--brand);font-weight:600;margin-top:2px}

/* ---------- 首页收尾与暗色区按钮 ---------- */
.pick-more{text-align:center;margin-top:30px}
.cta-btns2{display:flex;flex-direction:column;gap:14px;justify-content:center}
.cta-btns2 .btn{text-align:center}
.case-box img{width:100%;height:420px;object-fit:cover}

/* ---------- 移动端菜单按钮（窄屏才出现） ---------- */
.nav-toggle{display:none;background:transparent;border:1px solid var(--line-strong);border-radius:var(--r);color:var(--ink);font-size:18px;line-height:1;padding:8px 12px;cursor:pointer}
@media(max-width:960px){
  .nav-toggle{display:block}
  .nav{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;padding:6px 0;box-shadow:0 12px 24px rgba(0,0,0,.08);z-index:60}
  .nav.open{display:flex}
  .nav a{padding:12px 20px;border-bottom:1px solid var(--soft2)}
  .hd-in{position:relative}
  .hd-tel{display:none}
}

/* ---------- 首页产品条：易优循环输出的卡片 ---------- */
.rcard .pb h3 i{font-style:normal;font-size:11px;font-weight:600;color:var(--brand);background:var(--soft-bg);border:1px solid var(--line-strong);border-radius:20px;padding:2px 8px;margin-left:6px;vertical-align:2px;white-space:nowrap}

/* ====================== 内页 ====================== */
.crumb{background:var(--soft2);border-bottom:1px solid var(--line);font-size:13.5px;color:var(--sub);padding:14px 0}
.crumb a{color:var(--sub)}.crumb a:hover{color:var(--brand)}
.page-hd{background:var(--soft-bg);padding:46px 0;text-align:center;border-bottom:1px solid var(--line)}
.page-hd h1{font-size:33px;margin-bottom:10px;letter-spacing:-.5px}
.page-hd p{color:var(--sub);font-size:15px;max-width:700px;margin:0 auto;line-height:1.8}
.cols{display:grid;grid-template-columns:252px 1fr;gap:34px;align-items:start}
.side{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;position:sticky;top:100px}
.side-h{background:var(--brand);color:#fff;font-size:16px;font-weight:700;padding:16px 20px;letter-spacing:.5px}
.side a{display:block;padding:13px 20px;font-size:14.5px;color:var(--nav-fg);border-bottom:1px solid var(--line);transition:.16s}
.side a:last-child{border-bottom:0}
.side a:hover{background:var(--soft2);color:var(--brand);padding-left:24px}
.side a.on{color:var(--brand);font-weight:700;background:var(--soft-bg);border-left:3px solid var(--brand)}
.sbox{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;margin-top:18px;text-align:center}
.sbox b{display:block;font-size:15px;margin-bottom:6px}
.sbox p{font-size:13px;color:var(--sub);margin-bottom:12px;line-height:1.7}
.pgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.ptile{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;display:flex;flex-direction:column;transition:.2s}
.ptile:hover{border-color:var(--brand);transform:translateY(-3px);box-shadow:0 12px 26px rgba(0,0,0,.07)}
.ptile .ph{height:210px;overflow:hidden;background:var(--soft2)}
.ptile .ph img{width:100%;height:100%;object-fit:cover;transition:.4s}
.ptile:hover .ph img{transform:scale(1.04)}
.ptile .pb{padding:18px;flex:1;display:flex;flex-direction:column}
.ptile h3{font-size:16.5px;margin-bottom:8px;line-height:1.5}
.ptile p{font-size:13px;color:var(--sub);line-height:1.68;flex:1;margin-bottom:12px}
.ptile .pr{font-size:15px;font-weight:700;color:var(--brand)}
.pager{display:flex;justify-content:center;gap:8px;margin-top:38px;flex-wrap:wrap}
.pager a,.pager span{min-width:40px;text-align:center;padding:9px 13px;border:1px solid var(--line);border-radius:var(--r);font-size:14px;background:#fff;display:inline-block}
.pager a:hover{border-color:var(--brand);color:var(--brand)}
.rich{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:34px 38px;font-size:15.5px;line-height:1.95;color:#2b3a4f}
.rich h2,.rich h3{margin:26px 0 12px;color:var(--ink)}
.rich h2{font-size:21px}.rich h3{font-size:18px}
.rich p{margin-bottom:14px}
.rich img{max-width:100%;height:auto;border-radius:var(--r);margin:14px 0}
.rich ul,.rich ol{margin:12px 0 14px 22px}
.rich li{margin:6px 0}
.rich table{width:100%;border-collapse:collapse;margin:16px 0;font-size:14.5px}
.rich th,.rich td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.rich th{background:var(--soft2);font-weight:700}
.art-hd{padding:36px 0 0}
.art-hd h1{font-size:29px;margin-bottom:14px;line-height:1.42}
.art-meta{font-size:13.5px;color:var(--sub);display:flex;gap:18px;flex-wrap:wrap;padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:24px}
.art-nav{display:flex;justify-content:space-between;gap:20px;margin-top:26px;font-size:14.5px;flex-wrap:wrap}
.art-nav a{color:var(--sub)}.art-nav a:hover{color:var(--brand)}
.rel-hd{font-size:20px;margin:44px 0 20px;display:flex;align-items:center;gap:10px}
.rel-hd::before{content:"";width:4px;height:18px;background:var(--brand);border-radius:2px}
.pro-detail{display:grid;grid-template-columns:1.05fr 1fr;gap:44px;align-items:start;margin-bottom:44px}
.pro-photo{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:22px}
.pro-photo img{width:100%;border-radius:var(--r)}
.pro-thumbs{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap}
.pro-thumbs img{width:76px;height:76px;object-fit:cover;border:1px solid var(--line);border-radius:var(--r);cursor:pointer}
.pro-info h1{font-size:27px;margin-bottom:14px;line-height:1.35}
.pro-desc{font-size:15px;color:var(--sub);line-height:1.85;margin-bottom:20px}
.pro-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}
.pro-tags span{font-size:12.5px;color:var(--brand);background:var(--soft-bg);border:1px solid var(--line-strong);border-radius:20px;padding:4px 11px}
.tbl{width:100%;border-collapse:collapse;margin-bottom:22px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden}
.tbl td{border-bottom:1px solid var(--line);padding:13px 16px;font-size:14.5px}
.tbl tr:last-child td{border-bottom:0}
.tbl td:first-child{width:112px;color:var(--sub);background:var(--soft2);font-weight:600}
.empty{text-align:center;color:var(--sub);padding:70px 0;font-size:15px}
.telbox{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:8px}
.telbox a{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.25);border-radius:var(--r-lg);padding:20px;text-align:center;transition:.18s}
.telbox a:hover{background:rgba(255,255,255,.18)}
.telbox b{display:block;font-size:18px;margin-bottom:6px}
.telbox span{font-size:12.5px;color:var(--cta-sub)}
.contact-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:36px;align-items:start}
.contact-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:22px 24px;margin-bottom:16px}
.contact-item b{display:block;font-size:13px;color:var(--sub);font-weight:600;margin-bottom:6px;letter-spacing:.5px}
.contact-item p{font-size:17px;font-weight:700;color:var(--ink);line-height:1.6}
.contact-item p.sm{font-size:15px;font-weight:600}
/* 图集模型（安装案例）：案例网格 + 点击看大图 */
.gal{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:6px}
.gal a{display:block;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:#fff;aspect-ratio:4/3;position:relative}
.gal img{width:100%;height:100%;object-fit:cover;transition:.4s;cursor:zoom-in;display:block}
.gal a:hover img{transform:scale(1.05)}
.gal a .cap{position:absolute;left:0;right:0;bottom:0;padding:26px 16px 12px;color:#fff;font-size:14px;font-weight:600;background:linear-gradient(transparent,rgba(8,18,32,.72));opacity:0;transition:.25s}
.gal a:hover .cap{opacity:1}
.case-lead{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px 30px;margin-bottom:24px;font-size:15px;line-height:1.9;color:#2b3a4f}
.case-lead h2{font-size:19px;margin-bottom:10px;color:var(--ink)}
.lightbox{position:fixed;inset:0;background:rgba(8,18,32,.92);display:none;align-items:center;justify-content:center;z-index:999;padding:30px}
.lightbox.on{display:flex}
.lightbox img{max-width:92vw;max-height:86vh;border-radius:var(--r-lg);box-shadow:0 24px 70px rgba(0,0,0,.55)}
.lightbox .x{position:absolute;top:20px;right:32px;color:#fff;font-size:36px;line-height:1;cursor:pointer;opacity:.75}
.lightbox .x:hover{opacity:1}
@media(max-width:1000px){.gal{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.gal{grid-template-columns:1fr}.case-lead{padding:20px 18px}}
/* 询价表单（后台 → 表单管理，字段后台可改） */
.qform{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:28px}
.qform h3{font-size:19px;margin-bottom:6px}
.qform .tip2{font-size:13px;color:var(--sub);margin-bottom:18px}
.qform .fr{margin-bottom:14px}
.qform label{display:block;font-size:13px;color:var(--sub);margin-bottom:6px;font-weight:600}
.qform input[type=text],.qform input[type=tel],.qform select,.qform textarea{width:100%;background:var(--input-bg);border:1px solid var(--line-strong);border-radius:var(--r);padding:11px 13px;font-size:14.5px;color:var(--ink);font-family:var(--font)}
.qform textarea{resize:vertical}
.qform select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32' fill='none' stroke='%2364748B' stroke-width='2'%3E%3Cpath d='M8 13l8 8 8-8'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;background-size:16px}
.qform .two{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.qform button{width:100%;background:var(--brand);color:#fff;border:0;border-radius:var(--r);padding:13px;font-size:16px;font-weight:700;cursor:pointer;font-family:var(--font);transition:.18s}
.qform button:hover{background:var(--brand-d)}
.qform .tip{font-size:12.5px;color:var(--sub);text-align:center;margin-top:10px}

@media(max-width:1000px){
  .cols{grid-template-columns:1fr}
  .side{position:static}
  .pgrid{grid-template-columns:repeat(2,1fr)}
  .pro-detail{grid-template-columns:1fr;gap:26px}
  .telbox{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
}
@media(max-width:640px){
  .pgrid{grid-template-columns:1fr}
  .rich{padding:22px 18px}
  .page-hd h1{font-size:25px}
  .qform .two{grid-template-columns:1fr}
}