/*
Theme Name: IVY Piping Systems
Theme URI: https://ivypipe.com
Author: IVY STEAM
Author URI: https://ivypipe.com
Description: Custom B2B theme for IVY PIPING SYSTEMS — plastic pipe and fitting export site. Product systems, case studies, news and inquiry pipeline. No page builder, no external dependencies.
Version: 0.3.1
Requires at least: 6.2
Requires PHP: 8.0
License: Proprietary
Text Domain: ivysteam
Tags: business, custom-menu, custom-logo, featured-images
*/

/* ============================================================
   0. 基座
   ============================================================ */
*,*::before,*::after{box-sizing:border-box}
:root{
  --ink:#0E1F26;          /* 近黑：正文标题与深色区块 */
  --ink-2:#16323E;        /* 次深：下拉、分层 */
  --line:#DCE2E5;         /* 发丝线 */
  --line-d:rgba(255,255,255,.16);
  --gray:#F2F4F5;
  --muted:#5C6A72;
  --body:#28353B;
  --teal:#169BBA;         /* 品牌色 */
  --teal-d:#0E7C96;
  --teal-deep:#0C3A47;
  --white:#fff;

  --sans:"Helvetica Neue",Helvetica,Arial,"Segoe UI",Roboto,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --wrap:1360px;
  --gut:clamp(20px,4vw,56px);
  --h1:clamp(38px,5.6vw,76px);
  --h2:clamp(28px,3.5vw,52px);
  --lede:clamp(18px,1.55vw,24px);
  --sec-y:clamp(56px,7.2vw,112px);
}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--sans);color:var(--body);background:var(--white);
  font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
p{margin:0}
ul,ol{margin:0;padding:0}
li{list-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.025em;line-height:1.04}
h1{font-size:var(--h1)}
h2{font-size:var(--h2)}
h3{font-size:21px;line-height:1.2;letter-spacing:-.015em}
h4{font-size:15px}
::selection{background:var(--teal);color:#fff}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}
.wrap-n{max-width:1000px;margin:0 auto;padding:0 var(--gut)}

/* 文章元信息（替代原来的小标签，不抢标题） */
.post-meta{margin-top:18px;font-size:13px;color:var(--muted);letter-spacing:.02em}

/* ============================================================
   1. 按钮
   ============================================================ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:54px;padding:0 30px;border-radius:2px;border:1.5px solid transparent;
  font-family:inherit;font-size:13.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  cursor:pointer;transition:background .18s,color .18s,border-color .18s;white-space:nowrap;
}
.btn svg{width:16px;height:16px;flex:none}
.btn-primary{background:var(--teal);color:#fff}
.btn-primary:hover{background:var(--teal-d)}
.btn-ink{background:var(--ink);color:#fff}
.btn-ink:hover{background:#000}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{background:#E9EFF1}
.btn-ghost{border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{background:var(--ink);border-color:var(--ink);color:#fff}
.btn-ghost-light{border-color:rgba(255,255,255,.55);color:#fff}
.btn-ghost-light:hover{background:#fff;border-color:#fff;color:var(--ink)}
.btn-sm{height:44px;padding:0 20px;font-size:12px;letter-spacing:.07em}
.btn-block{width:100%}
.link-more{
  display:inline-flex;align-items:center;gap:9px;font-size:12.5px;font-weight:700;
  letter-spacing:.12em;text-transform:uppercase;color:var(--ink);
  border-bottom:2px solid var(--teal);padding-bottom:7px;transition:color .18s;
}
.link-more:hover{color:var(--teal-d)}
.link-more svg{width:15px;height:15px}

/* ============================================================
   2. 页头（单行深色 + 全大写导航）
   ============================================================ */
.site-header{
  position:sticky;top:0;z-index:80;background:var(--ink);
  border-bottom:1px solid rgba(255,255,255,.1);
}
body.admin-bar .site-header{top:32px}
.hd-in{
  max-width:var(--wrap);margin:0 auto;padding:0 var(--gut);
  height:82px;display:flex;align-items:center;gap:clamp(20px,3vw,48px);
}
.hd-logo{display:flex;align-items:center;flex:none}
.hd-logo img{height:34px;width:auto}
.nav{display:flex;align-items:center;gap:clamp(14px,2.1vw,32px);margin-left:auto}
.nav>li{position:relative;display:flex}
.nav>li>a{
  display:inline-flex;align-items:center;gap:7px;height:82px;
  font-size:12.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  color:rgba(255,255,255,.82);transition:color .16s;white-space:nowrap;
}
.nav>li>a:hover,.nav>li.current-menu-item>a{color:#fff}
.caret{width:5px;height:5px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:rotate(45deg) translate(-1px,-1px);opacity:.7}
.has-mega{position:static}
.mega{
  position:absolute;top:100%;left:0;right:0;background:var(--ink-2);
  border-top:1px solid rgba(255,255,255,.08);
  padding:34px var(--gut) 38px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:6px 40px;
  opacity:0;visibility:hidden;transform:translateY(-6px);transition:.18s;
}
.has-mega:hover .mega,.has-mega:focus-within .mega{opacity:1;visibility:visible;transform:none}
.mega a{
  display:block;padding:10px 0;font-size:14px;color:rgba(255,255,255,.78);
  border-bottom:1px solid rgba(255,255,255,.07);transition:padding .16s,color .16s;
}
.mega a:hover{color:#fff;padding-left:8px}
.mega .mega-foot{grid-column:1/-1;border:0;margin-top:16px;padding:0}
.mega .mega-foot a{display:inline-block;color:#6FD3E8;border:0;font-weight:700;font-size:12.5px;letter-spacing:.1em;text-transform:uppercase;padding:0}
.hd-act{display:flex;align-items:center;gap:16px;flex:none;margin-left:8px}
.hd-tel{font-size:12.5px;font-weight:700;letter-spacing:.06em;color:rgba(255,255,255,.85);display:inline-flex;align-items:center;gap:8px}
.hd-tel svg{width:15px;height:15px;fill:#25D366}
.hd-tel:hover{color:#fff}
.burger{display:none;width:46px;height:46px;border:1px solid rgba(255,255,255,.28);background:none;cursor:pointer;align-items:center;justify-content:center;margin-left:auto}
.burger span{display:block;width:20px;height:2px;background:#fff;position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:20px;height:2px;background:#fff}
.burger span::before{top:-6px}.burger span::after{top:6px}

/* ============================================================
   3. 首屏（满幅大图 + 左下大字）
   ============================================================ */
.hero{position:relative;background:var(--ink);overflow:hidden}
.hero-bg{position:absolute;inset:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;object-position:center 42%}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,31,38,.62) 0%,rgba(14,31,38,.30) 26%,rgba(14,31,38,.72) 62%,rgba(14,31,38,.94) 100%);
}
.hero-in{
  position:relative;z-index:2;max-width:var(--wrap);margin:0 auto;
  padding:clamp(90px,15vh,190px) var(--gut) clamp(44px,6vw,72px);
  min-height:min(84vh,880px);display:flex;flex-direction:column;justify-content:flex-end;
}
.hero-in h1{color:#fff;max-width:16em;font-size:var(--h1);text-wrap:balance}
.hero-lede{
  margin-top:26px;max-width:600px;color:rgba(255,255,255,.9);
  font-size:var(--lede);line-height:1.45;font-weight:400;
}
.hero-cta{display:flex;gap:14px;margin-top:38px;flex-wrap:wrap}

/* 首屏下方的数字条：独立深色带，保证在任何照片上都读得清 */
.stats-bar{background:var(--ink);border-top:1px solid rgba(255,255,255,.1)}
.hero-meta{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  padding:30px 0 32px;
}
.hero-meta span{
  display:block;padding-left:24px;border-left:1px solid rgba(255,255,255,.14);
  color:rgba(255,255,255,.58);font-size:12px;letter-spacing:.03em;
}
.hero-meta span:first-child{padding-left:0;border-left:0}
.hero-meta b{display:block;color:#fff;font-size:clamp(22px,2.1vw,30px);letter-spacing:-.02em;line-height:1.1;margin-bottom:7px;font-weight:700}

/* ============================================================
   4. 常规区块
   ============================================================ */
.sec{padding:var(--sec-y) 0}
.sec-tint{background:var(--gray)}
.sec-ink{background:var(--ink);color:rgba(255,255,255,.78)}
.sec-ink h2,.sec-ink h3{color:#fff}
.sec-teal{background:var(--teal);color:#fff}
.sec-teal h2{color:#fff}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:clamp(24px,4vw,64px);margin-bottom:clamp(34px,4.4vw,60px);flex-wrap:wrap}
.sec-head>div{max-width:900px}
.sec-title{font-size:var(--h2);text-wrap:balance}
.sec-sub{margin-top:20px;max-width:600px;color:var(--muted);font-size:17px;line-height:1.6}
.sec-ink .sec-sub{color:rgba(255,255,255,.62)}
.lede{font-size:var(--lede);line-height:1.42;color:var(--ink);max-width:900px;letter-spacing:-.01em}
.rule{height:1px;background:var(--line);border:0;margin:0}
.sec-ink .rule,.sec-teal .rule{background:var(--line-d)}

/* 满幅色块 lede 条 */
.band{background:var(--teal);color:#fff;padding:clamp(30px,3.6vw,46px) 0}
.band p{margin:0;font-size:clamp(19px,1.9vw,28px);line-height:1.35;font-weight:400;max-width:1180px;letter-spacing:-.012em}
.band.ink{background:var(--ink)}

/* ============================================================
   5. 产品系统瓷砖
   ============================================================ */
.sys-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(10px,1.1vw,16px)}
.tile{
  position:relative;display:block;overflow:hidden;background:var(--ink);
  aspect-ratio:4/3;min-height:240px;
}
.tile img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.2,.7,.3,1);opacity:.92}
.tile::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(14,31,38,0) 30%,rgba(14,31,38,.86) 100%)}
.tile-b{position:absolute;inset:auto 0 0 0;z-index:2;padding:26px 26px 24px;max-width:calc(100% - 70px)}
.tile h3{color:#fff;font-size:clamp(20px,1.7vw,26px);line-height:1.15;letter-spacing:-.02em}
.tile p{margin-top:9px;color:rgba(255,255,255,.72);font-size:13.5px;line-height:1.45;max-width:30em}
.tile:hover img{transform:scale(1.045)}
.arrow-sq{
  position:absolute;right:0;bottom:0;z-index:3;width:56px;height:56px;
  background:var(--teal);display:flex;align-items:center;justify-content:center;transition:background .18s;
}
.arrow-sq svg{width:18px;height:18px;color:#fff;transition:color .18s}
.tile:hover .arrow-sq{background:#fff}
.tile:hover .arrow-sq svg{color:var(--ink)}
.tile-cta{background:var(--teal-deep);display:flex;flex-direction:column;justify-content:flex-end;padding:26px;aspect-ratio:4/3;min-height:240px}
.tile-cta::after{display:none}
.tile-cta h3{color:#fff}
.tile-cta p{margin-top:10px;color:rgba(255,255,255,.72);font-size:13.5px;line-height:1.45}
.tile-cta .arrow-sq{background:#fff}
.tile-cta .arrow-sq svg{color:var(--ink)}
.tile-cta:hover .arrow-sq{background:var(--teal)}
.tile-cta:hover .arrow-sq svg{color:#fff}
/* 7 个系统 + 1 张 CTA 卡：桌面端让 CTA 跨 2 列，最后一行正好填满 */
@media (min-width:1025px){
  .sys-grid .tile-cta{grid-column:span 2;aspect-ratio:auto;min-height:0}
  .sys-grid .tile-cta .tile-b{position:static;max-width:none;padding:0}
}

/* ============================================================
   6. 四条差异化（深底）
   ============================================================ */
.why{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line-d)}
.why-i{padding:36px 26px 0;border-left:1px solid var(--line-d)}
.why-i:first-child{border-left:0;padding-left:0}
.why-i h3{font-size:20px;margin-bottom:12px;letter-spacing:-.015em}
.why-i p{font-size:14.5px;line-height:1.6;color:rgba(255,255,255,.62)}

/* ============================================================
   7. 产品卡片
   ============================================================ */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(16px,2vw,30px)}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(14px,1.6vw,24px)}
.card{display:block;background:#fff;border:1px solid var(--line);transition:border-color .2s}
.card:hover{border-color:var(--ink)}
.card-img{aspect-ratio:4/3;background:var(--gray);overflow:hidden}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.2,.7,.3,1)}
.card:hover .card-img img{transform:scale(1.04)}
.card-b{padding:20px 20px 22px}
.card-tag{display:inline-block;font-size:10.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--teal-d);margin-bottom:10px}
.card h3{font-size:19px;line-height:1.2}
.card p{margin-top:9px;font-size:13.5px;color:var(--muted);line-height:1.5}
.card-arrow{display:inline-flex;align-items:center;gap:8px;margin-top:16px;font-size:11.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--ink)}
.card-arrow svg{width:14px;height:14px;transition:transform .2s}
.card:hover .card-arrow svg{transform:translateX(4px)}
.card-cta{background:var(--ink);border-color:var(--ink);display:flex;flex-direction:column;justify-content:flex-end;padding:26px;min-height:100%}
.card-cta h3{color:#fff}
.card-cta p{color:rgba(255,255,255,.66);font-size:13.5px;margin-top:10px}
.card-cta .card-arrow{color:#6FD3E8}

/* ============================================================
   8. 工厂能力
   ============================================================ */
.cap{display:grid;grid-template-columns:1.15fr 1fr;gap:clamp(28px,4.6vw,72px);align-items:center}
.cap-img{position:relative}
.cap-img img{width:100%;aspect-ratio:4/3;object-fit:cover}
.cap-badge{
  position:absolute;left:0;bottom:0;background:var(--teal);color:#fff;
  padding:16px 22px;font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;line-height:1.5;
}
.cap-badge b{display:block;font-size:26px;letter-spacing:-.02em;margin-bottom:2px}
.cap h2{margin-bottom:22px}
.cap-list{margin-top:28px;border-top:1px solid var(--line)}
.cap-list li{display:flex;gap:14px;padding:15px 0;border-bottom:1px solid var(--line);font-size:15px;color:var(--body);list-style:none}
.cap-list svg{width:18px;height:18px;color:var(--teal);flex:none;margin-top:2px}
.sec-ink .cap-list{border-color:var(--line-d)}
.sec-ink .cap-list li{border-color:var(--line-d);color:rgba(255,255,255,.8)}

/* ============================================================
   9. 案例卡片
   ============================================================ */
.case-card{display:block;background:#fff;border-top:2px solid var(--ink);padding-top:0}
.case-img{aspect-ratio:3/2;overflow:hidden;background:var(--gray);margin-top:2px}
.case-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.2,.7,.3,1)}
.case-card:hover .case-img img{transform:scale(1.04)}
.case-b{padding:20px 0 0}
.case-meta{font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--teal-d);margin-bottom:12px}
.case-card h3{font-size:22px;line-height:1.18}
.case-card p{margin-top:10px;font-size:14px;color:var(--muted);line-height:1.55}
.case-card:hover h3{color:var(--teal-d)}

/* ============================================================
   10. 证言 / 认证 / 新闻
   ============================================================ */
.quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(16px,2.4vw,40px)}
.q{border-top:2px solid #fff;padding-top:22px}
.q p{font-size:19px;line-height:1.5;color:#fff;letter-spacing:-.01em}
.q-who{margin-top:20px;font-size:13px;color:rgba(255,255,255,.6)}
.q-who b{display:block;color:#fff;font-size:14px;margin-bottom:2px}

.certs{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}
.cert{padding:26px 22px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.cert b{display:block;font-size:17px;color:var(--ink);letter-spacing:-.01em}
.cert span{display:block;margin-top:7px;font-size:12.5px;color:var(--muted);line-height:1.5}

.news-date{font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:12px}
.post-card{border-top:2px solid var(--ink);padding-top:0;display:block}
.post-card .case-img{aspect-ratio:16/10}
.post-card h3{font-size:21px}

/* ============================================================
   11. 询盘：浅底 + 深色工单卡（与页脚深底拉开层级）
   ============================================================ */
.inq-sec{background:#E8EDEF;border-top:1px solid var(--line)}
.inq{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,80px);align-items:start}
.inq h2{color:var(--ink);margin-bottom:22px}
.inq>div>p{color:var(--muted);font-size:16.5px;line-height:1.6;max-width:520px}
.inq-contact{margin-top:34px;display:flex;flex-direction:column;gap:0;border-top:1px solid var(--line)}
.inq-contact li{
  display:flex;gap:16px;align-items:baseline;list-style:none;
  font-size:14px;color:var(--body);padding:15px 0;border-bottom:1px solid var(--line);
}
.inq-contact b{
  flex:none;min-width:78px;font-size:11px;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--teal-d);
}
.inq-contact a{color:var(--ink);border-bottom:1px solid rgba(14,31,38,.22);transition:color .18s,border-color .18s}
.inq-contact a:hover{color:var(--teal-d);border-color:var(--teal)}

/* 深色工单卡：降级占位与 CF7 真实表单共用同一视觉 */
.form,.ivy-form .wpcf7 form{
  /* 表单配色变量：深色卡内切换，裸表单（如 prose 里直接贴 CF7）默认浅色 */
  --f-bg:rgba(255,255,255,.05);--f-bd:rgba(255,255,255,.18);--f-fg:#fff;
  --f-ph:rgba(255,255,255,.34);--f-lb:rgba(255,255,255,.55);--f-bg-f:rgba(255,255,255,.09);
  position:relative;background:var(--ink);color:#fff;
  padding:clamp(24px,2.6vw,38px);
}
.form::before,.ivy-form .wpcf7 form::before{
  content:"";position:absolute;left:0;top:0;height:3px;width:44px;background:var(--teal);
  transition:width .45s cubic-bezier(.2,.7,.3,1);
}
.form:hover::before,.ivy-form .wpcf7 form:hover::before,
.form:focus-within::before,.ivy-form .wpcf7 form:focus-within::before{width:100%}

.ivy-form .wpcf7{margin:0}
.ivy-form .wpcf7 p:empty{display:none}
.f-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.f-field{margin-bottom:16px}
.f-field label{
  display:block;font-size:11px;font-weight:700;letter-spacing:.13em;text-transform:uppercase;
  color:var(--f-lb,var(--muted));margin-bottom:8px;transition:color .18s;
}
.f-field label i{color:var(--teal);font-style:normal}
.f-field:focus-within label{color:var(--teal)}
.f-field input,.f-field select,.f-field textarea,.f-field .wpcf7-form-control{
  width:100%;border:1px solid var(--f-bd,var(--line));background:var(--f-bg,#fff);border-radius:2px;
  padding:14px 15px;font-family:inherit;font-size:15px;color:var(--f-fg,var(--ink));
  transition:border-color .18s,background .18s,box-shadow .18s;
}
.f-field textarea{min-height:120px;resize:vertical;line-height:1.55}
.f-field input:focus,.f-field select:focus,.f-field textarea:focus{
  outline:0;border-color:var(--teal);background:var(--f-bg-f,#fff);box-shadow:0 0 0 3px rgba(22,155,186,.18);
}
.f-field input::placeholder,.f-field textarea::placeholder{color:var(--f-ph,#A7B2B8)}
.f-note{margin-top:14px;font-size:12px;color:rgba(255,255,255,.58);line-height:1.5}

/* 提交：实心青 → 悬停反白，按下位移 1px */
.wpcf7-submit{
  width:100%;height:54px;margin-top:4px;border:1.5px solid var(--teal);border-radius:2px;
  background:var(--teal);color:#fff;font-family:var(--sans);font-size:13.5px;font-weight:700;
  letter-spacing:.08em;text-transform:uppercase;cursor:pointer;
  transition:background .18s,color .18s,border-color .18s,transform .1s;
}
.wpcf7-submit:hover{background:#fff;border-color:#fff;color:var(--ink)}
.wpcf7-submit:active{transform:translateY(1px)}
.wpcf7 form.submitting .wpcf7-submit{opacity:.5;cursor:wait}

/* CF7 校验与返回提示 */
.wpcf7-not-valid-tip{font-size:12px;color:#FF9C8A;margin-top:7px}
.wpcf7 form .wpcf7-response-output{
  margin:16px 0 0;padding:12px 14px;border:1px solid rgba(255,255,255,.18);
  font-size:13px;line-height:1.5;color:rgba(255,255,255,.8);
}
.wpcf7 form.invalid .wpcf7-response-output,
.wpcf7 form.unaccepted .wpcf7-response-output,
.wpcf7 form.failed .wpcf7-response-output{border-color:#FF9C8A;color:#FF9C8A}
.wpcf7 form.sent .wpcf7-response-output{border-color:var(--teal);color:#8FE3F4}

/* 正文里裸贴的 CF7：变量回落到浅色，另收一下按钮宽度与提示文字颜色 */
.prose .wpcf7 form .wpcf7-submit{max-width:280px}
.prose .wpcf7 form .wpcf7-response-output{color:var(--body);border-color:var(--line)}

/* 表单卡的轻量入场（滚动驱动，不支持则静止） */
@supports (animation-timeline:view()){
  .form,.ivy-form .wpcf7 form{
    animation:ivy-rise linear both;animation-timeline:view();animation-range:entry 2% cover 26%;
  }
  @keyframes ivy-rise{from{opacity:.001;transform:translateY(22px)}to{opacity:1;transform:none}}
}

/* ============================================================
   12. 页脚（比询盘区更深 + 顶部青线，链接悬停滑出短横）
   ============================================================ */
.footer{background:#0A171C;color:rgba(255,255,255,.6);border-top:3px solid var(--teal);padding:clamp(48px,6vw,80px) 0 0}
.f-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:clamp(26px,4vw,56px);padding-bottom:clamp(34px,4vw,52px)}
.f-grid>div>img{height:32px;width:auto;margin-bottom:20px}
.f-grid p{font-size:13.5px;line-height:1.65;max-width:34em}
.f-grid h4{font-size:10.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:rgba(255,255,255,.4);margin-bottom:18px}
.f-grid a{
  position:relative;display:block;font-size:14px;padding:6px 0;color:rgba(255,255,255,.76);
  transition:color .18s,padding-left .22s cubic-bezier(.2,.7,.3,1);
}
.f-grid a::before{
  content:"";position:absolute;left:0;top:50%;width:0;height:1px;background:var(--teal);
  transition:width .22s cubic-bezier(.2,.7,.3,1);
}
.f-grid a:hover{color:#fff;padding-left:20px}
.f-grid a:hover::before{width:13px}
.f-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0 26px;
  display:flex;justify-content:space-between;gap:20px;font-size:12px;color:rgba(255,255,255,.42);flex-wrap:wrap;
}
.f-bottom a{transition:color .18s}
.f-bottom a:hover{color:var(--teal)}

/* 手机底部固定条 */
.mbar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:70;background:var(--ink);border-top:1px solid rgba(255,255,255,.14)}
.mbar a{flex:1;text-align:center;padding:15px 6px;font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:#fff;border-left:1px solid rgba(255,255,255,.14)}
.mbar a:first-child{border-left:0}
.mbar a:last-child{background:var(--teal)}

/* ============================================================
   13. 内页头 / 面包屑 / 分页 / 标签
   ============================================================ */
.page-hero{background:var(--ink);color:rgba(255,255,255,.72);padding:clamp(48px,7vw,86px) 0 clamp(40px,5vw,64px);position:relative;overflow:hidden}
.page-hero .wrap{position:relative;z-index:2}
.page-hero h1{color:#fff;font-size:clamp(32px,4.4vw,60px);max-width:20em}
.page-hero p{margin-top:18px;max-width:640px;font-size:17px;line-height:1.6;color:rgba(255,255,255,.66)}
.page-hero .eyebrow{color:#6FD3E8}

.crumb{max-width:var(--wrap);margin:0 auto;padding:16px var(--gut);font-size:12px;color:var(--muted);letter-spacing:.02em}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--teal-d)}
.crumb span{margin:0 8px;color:#BFC8CD}

.pager{display:flex;gap:8px;margin-top:clamp(36px,5vw,60px);flex-wrap:wrap}
.pager a,.pager span{
  min-width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);font-size:13px;font-weight:700;color:var(--ink);padding:0 14px;
}
.pager span.current{background:var(--ink);color:#fff;border-color:var(--ink)}
.pager a:hover{border-color:var(--ink)}

.tags{display:flex;gap:8px;flex-wrap:wrap}
.tag{
  display:inline-flex;align-items:center;height:38px;padding:0 16px;border:1px solid var(--line);
  font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--ink);
}
.tag:hover{border-color:var(--ink)}
.tag.on{background:var(--ink);color:#fff;border-color:var(--ink)}

.empty-state{border:1px solid var(--line);padding:clamp(28px,4vw,48px);max-width:760px}
.empty-state h2{font-size:26px;margin-bottom:14px}
.empty-state p{color:var(--muted);font-size:15.5px;line-height:1.6;max-width:46em}
.empty-state .btn{margin-top:26px}

/* ============================================================
   14. 产品详情
   ============================================================ */
.pd{display:grid;grid-template-columns:1.08fr 1fr;gap:clamp(28px,4.4vw,72px);padding:clamp(28px,4vw,52px) 0 clamp(40px,5vw,64px);align-items:start}
.pd-main{background:var(--gray);aspect-ratio:1/1;overflow:hidden}
.pd-main img{width:100%;height:100%;object-fit:cover}
.pd-thumbs{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:8px}
.pd-thumb{aspect-ratio:1/1;background:var(--gray);overflow:hidden;cursor:pointer;border:2px solid transparent}
.pd-thumb.active{border-color:var(--ink)}
.pd-thumb img{width:100%;height:100%;object-fit:cover}
.pd h1{font-size:clamp(30px,3.6vw,48px);margin-top:6px;text-wrap:balance}
.pd-sub{margin-top:16px;font-size:16px;color:var(--muted);line-height:1.55}
.kv{width:100%;border-collapse:collapse;margin-top:30px;border-top:1px solid var(--line)}
.kv td{padding:12px 0;border-bottom:1px solid var(--line);font-size:14px;vertical-align:top}
.kv td:first-child{color:var(--muted);width:42%;font-size:11px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;padding-top:15px}
.kv td:last-child{color:var(--ink);font-weight:500}
.pd-cta{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
.pd-trust{display:flex;gap:18px;flex-wrap:wrap;margin-top:22px;font-size:12.5px;color:var(--muted)}
.pd-trust span::before{content:"—";color:var(--teal);margin-right:6px}

/* 规格表：表头吸顶 + 首列 sticky + 横滑 */
.spec-block{margin:clamp(40px,5vw,72px) 0}
.spec-head{display:flex;align-items:baseline;justify-content:space-between;gap:20px;margin-bottom:20px;border-bottom:1px solid var(--line);padding-bottom:16px}
.spec-head h2{font-size:clamp(22px,2.2vw,32px)}
.spec-count{font-size:11.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.spec-wrap{
  overflow:auto;max-height:min(74vh,760px);border:1px solid var(--line);
  -webkit-overflow-scrolling:touch;
}
.spec-wrap:focus{outline:2px solid var(--teal);outline-offset:2px}
.spec{width:100%;border-collapse:separate;border-spacing:0;font-size:14px;font-variant-numeric:tabular-nums}
.spec thead th{
  position:sticky;top:0;z-index:3;background:var(--ink);color:#fff;
  font-size:11.5px;font-weight:700;letter-spacing:.09em;text-transform:uppercase;
  text-align:right;padding:14px 18px;white-space:nowrap;border-left:1px solid rgba(255,255,255,.12);
}
.spec thead th:first-child{text-align:left;border-left:0;z-index:5;left:0}
.spec tbody th,.spec tbody td{padding:12px 18px;border-bottom:1px solid var(--line);text-align:right;white-space:nowrap;background:#fff}
.spec tbody th{
  position:sticky;left:0;z-index:2;text-align:left;font-weight:700;color:var(--ink);
  border-right:1px solid var(--line);background:#fff;font-size:14px;
}
.spec tbody tr:nth-child(even) td{background:#FAFBFB}
.spec tbody tr:hover td{background:#EFF6F8}
.spec-na{color:#BFC8CD}
.spec-note{margin-top:14px;font-size:12.5px;color:var(--muted);line-height:1.6;max-width:70em}

/* 正文 */
.prose{max-width:820px}
.prose h2{font-size:clamp(24px,2.4vw,34px);margin:44px 0 16px}
.prose h3{font-size:21px;margin:32px 0 12px}
.prose p{margin:0 0 18px;font-size:17px;line-height:1.72;color:var(--body)}
.prose ul,.prose ol{margin:0 0 20px;padding-left:22px}
.prose li{list-style:disc;margin-bottom:9px;line-height:1.65}
.prose ol li{list-style:decimal}
.prose a{color:var(--teal-d);border-bottom:1px solid rgba(22,155,186,.35)}
.prose a:hover{border-color:var(--teal-d)}
.prose img{margin:26px 0;width:100%}
.prose blockquote{margin:26px 0;padding:4px 0 4px 22px;border-left:3px solid var(--teal);font-size:19px;line-height:1.5;color:var(--ink)}
.prose table{width:100%;border-collapse:collapse;margin:26px 0;font-size:14px}
.prose th,.prose td{border:1px solid var(--line);padding:11px 14px;text-align:left}
.prose th{background:var(--gray);font-size:12px;text-transform:uppercase;letter-spacing:.08em}
.prose code{background:var(--gray);padding:2px 6px;font-size:14px;border-radius:2px}

/* 特性 / 标准 / 装柜 */
.feat{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line)}
.feat-i{padding:26px 26px 26px 0;border-bottom:1px solid var(--line)}
.feat-i:nth-child(3n+2){padding-left:26px;border-left:1px solid var(--line)}
.feat-i:nth-child(3n){padding-left:26px;border-left:1px solid var(--line)}
.feat-i b{display:block;font-size:17px;color:var(--ink);margin-bottom:8px;letter-spacing:-.01em}
.feat-i span{font-size:14px;color:var(--muted);line-height:1.6}

.tbl-simple{width:100%;border-collapse:collapse;font-size:14px;margin-top:8px}
.tbl-simple th{
  background:var(--ink);color:#fff;font-size:11.5px;font-weight:700;letter-spacing:.09em;
  text-transform:uppercase;text-align:left;padding:13px 16px;
}
.tbl-simple td{padding:13px 16px;border-bottom:1px solid var(--line);vertical-align:top}
.tbl-simple tr:nth-child(even) td{background:#FAFBFB}

/* ============================================================
   15. 案例详情
   ============================================================ */
.case-hero{padding:clamp(26px,4vw,48px) 0 clamp(30px,4vw,44px)}
.case-hero h1{font-size:clamp(30px,4vw,56px);max-width:18em;margin-top:8px;text-wrap:balance}
.case-hero .meta{display:flex;gap:26px;flex-wrap:wrap;margin-top:24px;font-size:13.5px;color:var(--muted)}
.case-hero .meta b{display:block;font-size:10.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:#9AA6AC;margin-bottom:4px}
.case-facts{display:grid;grid-template-columns:repeat(6,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line);margin-top:clamp(28px,4vw,44px)}
.case-facts>div{padding:18px 16px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.case-facts span{display:block;font-size:10.5px;font-weight:700;letter-spacing:.13em;text-transform:uppercase;color:#9AA6AC;margin-bottom:6px}
.case-facts b{font-size:15px;color:var(--ink);font-weight:700;letter-spacing:-.01em}
.case-cover img{width:100%;aspect-ratio:21/9;object-fit:cover}
.case-quote{border-left:3px solid var(--teal);padding:6px 0 6px clamp(20px,3vw,34px);margin:clamp(32px,4vw,52px) 0}
.case-quote p{font-size:clamp(19px,2vw,27px);line-height:1.45;color:var(--ink);letter-spacing:-.015em}
.case-quote cite{display:block;margin-top:18px;font-style:normal;font-size:13px;color:var(--muted)}
.case-quote cite b{color:var(--ink);display:block;font-size:14px;margin-bottom:2px}

/* ============================================================
   16. 新闻列表 / 文章
   ============================================================ */
.post-list{border-top:1px solid var(--line)}
.post-row{display:grid;grid-template-columns:180px 1fr;gap:clamp(18px,3vw,44px);padding:clamp(22px,3vw,34px) 0;border-bottom:1px solid var(--line);align-items:start;border-bottom-width:1px}
.post-row time{font-size:11.5px;font-weight:700;letter-spacing:.13em;text-transform:uppercase;color:var(--muted)}
.post-row h2{font-size:clamp(20px,2vw,28px);line-height:1.2;letter-spacing:-.02em}
.post-row p{margin-top:10px;font-size:14.5px;color:var(--muted);line-height:1.6;max-width:60em}
.post-row:hover h2{color:var(--teal-d)}
.article-head{padding:clamp(30px,4vw,54px) 0 0}
.article-head h1{font-size:clamp(30px,3.8vw,52px);max-width:20em;text-wrap:balance}
.article-meta{display:flex;gap:16px;align-items:center;margin-top:22px;font-size:12px;color:var(--muted);letter-spacing:.04em;flex-wrap:wrap}
.article-meta span::before{content:"·";margin-right:12px;color:#C6CFD3}
.article-meta span:first-child::before{display:none}

/* ============================================================
   17. WordPress 基础
   ============================================================ */
.screen-reader-text{border:0;clip:rect(1px,1px,1px,1px);clip-path:inset(50%);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px;word-wrap:normal!important}
.screen-reader-text:focus{background:#fff;clip:auto;clip-path:none;color:var(--ink);display:block;font-size:14px;height:auto;left:16px;padding:14px 20px;top:16px;width:auto;z-index:100000;box-shadow:0 6px 20px rgba(0,0,0,.15)}
.alignleft{float:left;margin:0 24px 18px 0}
.alignright{float:right;margin:0 0 18px 24px}
.aligncenter{margin:24px auto;display:block}
.wp-caption{max-width:100%}
.wp-caption-text{font-size:12.5px;color:var(--muted);margin-top:8px}
.entry-content::after{content:"";display:table;clear:both}

/* ============================================================
   18. 响应式
   ============================================================ */
@media (max-width:1180px){
  .f-grid{grid-template-columns:1.6fr 1fr 1fr}
  .f-grid>div:last-child{grid-column:1/-1;padding-top:26px;border-top:1px solid rgba(255,255,255,.12)}
}
@media (max-width:1024px){
  .hd-in{height:72px}
  .nav{gap:18px}
  .nav>li>a{height:72px;font-size:11.5px}
  .hd-tel{display:none}
  .mega{grid-template-columns:repeat(2,1fr);padding:24px var(--gut)}
  .sys-grid{grid-template-columns:repeat(2,1fr)}
  .why{grid-template-columns:repeat(2,1fr)}
  .why-i:nth-child(odd){border-left:0;padding-left:0}
  .why-i:nth-child(n+3){border-top:1px solid var(--line-d);margin-top:34px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .certs{grid-template-columns:repeat(2,1fr)}
  .cap{grid-template-columns:1fr}
  .pd{grid-template-columns:1fr}
  .pd-main{aspect-ratio:4/3}
  .inq{grid-template-columns:1fr}
  .case-facts{grid-template-columns:repeat(3,1fr)}
  .feat{grid-template-columns:repeat(2,1fr)}
  .feat-i:nth-child(3n+2),.feat-i:nth-child(3n){padding-left:0;border-left:0}
  .feat-i:nth-child(even){padding-left:24px;border-left:1px solid var(--line)}
  .hero-meta{grid-template-columns:repeat(2,1fr);gap:22px 0}
  .hero-meta span:nth-child(3){padding-left:0;border-left:0}
  .hero-in{min-height:auto;padding-top:clamp(80px,14vh,150px)}
}
@media (max-width:760px){
  body{font-size:16px}
  .burger{display:flex}
  .hd-act{display:none}
  .hd-logo img{height:28px}
  .nav{
    position:fixed;inset:72px 0 0 0;background:var(--ink);flex-direction:column;
    align-items:stretch;gap:0;padding:8px var(--gut) 40px;overflow:auto;margin:0;
    transform:translateX(-100%);transition:transform .25s;z-index:75;
  }
  .nav.open{transform:none}
  .nav>li{display:block;border-bottom:1px solid rgba(255,255,255,.1)}
  .nav>li>a{height:auto;padding:18px 0;font-size:14px}
  .mega{
    position:static;opacity:1;visibility:visible;transform:none;display:block;
    background:none;padding:0 0 14px;border:0;
  }
  .mega a{padding:11px 0;border-bottom:1px solid rgba(255,255,255,.06);font-size:13.5px}
  .mega .mega-foot{margin-top:10px}
  .sys-grid,.grid-3,.grid-4,.why,.quotes,.certs,.feat{grid-template-columns:1fr}
  .why-i{padding-left:0!important;border-left:0!important;border-top:1px solid var(--line-d);margin-top:26px}
  .why-i:first-child{border-top:0;margin-top:0}
  .feat-i{padding-left:0!important;border-left:0!important}
  .tile,.tile-cta{aspect-ratio:3/2}
  .hero-in h1{font-size:clamp(32px,9vw,44px)}
  .hero-cta .btn{flex:1 1 100%}
  .hero-meta{grid-template-columns:1fr 1fr}
  .sec-head{flex-direction:column;align-items:flex-start}
  .case-facts{grid-template-columns:repeat(2,1fr)}
  .f-grid{grid-template-columns:1fr}
  .f-grid>div:last-child{border-top:0;padding-top:0}
  .f-bottom{flex-direction:column;gap:8px}
  .post-row{grid-template-columns:1fr;gap:8px}
  .f-row{grid-template-columns:1fr}
  .mbar{display:flex}
  body{padding-bottom:52px}
  .spec-wrap{max-height:none}
  .spec thead th,.spec tbody th,.spec tbody td{padding:11px 13px;font-size:13px}
  .case-cover img{aspect-ratio:4/3}
  .inq h2{font-size:26px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}