/* ==========================================================================
   携航机械商行 XIEHANG MACHINERY · 多语言 PHP 站点样式
   设计体系沿用已确认的 header 设计：--brand:#1E5AA8 / --accent:#E8790A / 背景 #F6F8FB / 文字 --ink:#17233B
   ========================================================================== */
:root{
  --bg:#F6F8FB;
  --bg2:#FFFFFF;
  --ink:#17233B;
  --sub:#5B6B82;
  --brand:#1E5AA8;
  --brand2:#2F7BD8;
  --line:#E4EAF2;
  --soft:#EEF3FB;
  --accent:#E8790A;
}
*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.6;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.container{max-width:1180px;margin:0 auto;padding:0 24px}
[hidden]{display:none!important}

/* 锚点定位（配合吸顶透明顶栏） */
[id]{scroll-margin-top:90px}

/* ===== 顶栏（透明底 · 品牌左右横排） ===== */
.topbar{
  position:sticky;top:0;z-index:80;
  background:var(--bg);
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:76px}
.brand{display:flex;align-items:center;gap:12px}
.brand-logo{height:44px;width:auto;display:block;object-fit:contain}
.brand-text{display:flex;flex-direction:column;align-items:flex-start;gap:2px;line-height:1.05;justify-content:center}
.brand-cn{font-size:19px;font-weight:700;letter-spacing:2px;white-space:nowrap}
.brand-en{font-size:13px;letter-spacing:1px;color:var(--sub);white-space:nowrap;font-weight:600}

/* 一级导航：IBM 风格，带子菜单的项 */
.nav{display:flex;align-items:center;gap:2px}
.nav-item{
  position:relative;
  padding:8px 12px;font-size:14px;color:var(--ink);font-weight:500;
  border-radius:8px;cursor:pointer;white-space:nowrap;
  display:flex;align-items:center;gap:6px;
}
.nav-item a{display:block;color:inherit}
.nav-item:hover{color:var(--brand);background:var(--soft)}
.nav-item .caret{font-size:10px;opacity:.7;transition:transform .2s}
.nav-item:hover .caret{transform:rotate(180deg)}
.nav-item.active{color:var(--brand)}
.nav-item.active a{color:var(--brand)}

/* Mega 面板：IBM 结构（左侧分类 + 右侧内容 + 底部按钮） */
.mega-panel{
  position:absolute;left:50%;top:100%;transform:translateX(-50%) translateY(8px);
  background:#fff;border:1px solid var(--line);border-radius:14px;
  box-shadow:0 24px 60px rgba(20,40,90,.12);
  width:940px;max-width:92vw;padding:18px;z-index:90;
  opacity:0;visibility:hidden;transition:opacity .18s,visibility .18s,transform .18s;
}
.nav-item:hover .mega-panel,.nav-item.open .mega-panel{
  opacity:1;visibility:visible;transform:translateX(-50%) translateY(4px);
}
.mega-panel::before{
  content:'';position:absolute;left:0;right:0;top:-16px;height:16px;
}
.mega-grid{display:grid;grid-template-columns:212px 1fr;gap:16px}
.mega-cats{border-right:1px solid var(--line);padding-right:12px;display:flex;flex-direction:column;gap:1px;max-height:none;overflow:visible}
.mega-cat{
  text-align:left;padding:8px 10px;border-radius:8px;font-size:13.5px;color:var(--ink);
  cursor:pointer;border:none;background:none;font-family:inherit;font-weight:500;flex:none;
  white-space:normal;overflow-wrap:anywhere;word-break:normal;line-height:1.35;min-width:0;
}
.mega-cat:hover{background:var(--soft);color:var(--brand)}
.mega-cat.active{background:var(--soft);color:var(--brand);font-weight:600}
.mega-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:2px;align-content:start}
.mega-body{display:flex;flex-direction:column;min-width:0;max-height:none;overflow:visible}
.mega-link{
  display:block;padding:8px 10px;border-radius:8px;font-size:13.5px;color:var(--ink);
  cursor:pointer;line-height:1.4;min-width:0;white-space:normal;overflow-wrap:anywhere;word-break:normal;
}
.mega-link:hover{background:var(--soft);color:var(--brand)}
.mega-more{
  margin-top:14px;padding-top:14px;border-top:1px solid var(--line);
  text-align:left;
}
.mega-more .btn{
  display:flex !important;align-items:center;justify-content:center;text-align:center;
  width:100%;color:#fff !important;background:var(--brand);box-shadow:none;
}
.mega-more .btn:hover{background:#1A4F95;color:#fff !important}

/* 顶部工具区：语言 + 汉堡 */
.top-tools{display:flex;align-items:center;gap:12px}
.lang{display:flex;align-items:center;gap:6px;padding:6px 14px;border:1px solid var(--line);border-radius:8px;font-size:13px;color:var(--sub);cursor:pointer;background:#fff;font-family:inherit}
.lang:hover{border-color:var(--brand);color:var(--brand)}
.lang .caret{margin-left:2px;font-size:10px}
.lang-list{display:none;position:absolute;right:0;top:calc(100% + 8px);background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 16px 40px rgba(20,40,90,.08);min-width:150px;padding:6px;z-index:70}
.lang-wrap{position:relative}
.lang-wrap.open .lang-list{display:block}
.lang-list a{display:block;padding:8px 12px;font-size:13px;color:var(--ink);border-radius:6px;cursor:pointer}
.lang-list a:hover{background:var(--soft);color:var(--brand)}
.lang-list a.active{color:var(--brand);font-weight:600}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 24px;border-radius:10px;font-size:14px;font-weight:600;cursor:pointer;border:1px solid transparent;transition:all .25s}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 22px rgba(30,90,168,.25)}
.btn-primary:hover{background:#1A4F95;transform:translateY(-2px)}
.btn-sm{padding:8px 18px;font-size:13px;border-radius:8px}
.btn:hover{transform:translateY(-2px)}

/* ===== Hero（首页）轮播 ===== */
.hero{
  position:relative;min-height:70vh;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:110px 24px 80px;overflow:hidden;
  background:linear-gradient(180deg,#0b1630 0%,#13244a 100%);
}
.hero-slides,.hero-slide{position:absolute;inset:0}
.hero-slide{opacity:0;transition:opacity 1.1s ease;z-index:0}
.hero-slide.is-active{opacity:1;z-index:1}
.hero-slide img{width:100%;height:100%;object-fit:cover;object-position:center;display:block}
.hero-slide video{width:100%;height:100%;object-fit:cover;object-position:center;display:block;background:#0b1630}
.hero-slide.is-active img{animation:heroKen 7s ease-out forwards}
@keyframes heroKen{from{transform:scale(1)}to{transform:scale(1.08)}}
.hero-shade{position:absolute;inset:0;z-index:2;
  background:linear-gradient(180deg,rgba(7,18,46,.55) 0%,rgba(7,18,46,.22) 42%,rgba(6,15,38,.90) 100%);}
.hero-inner{position:relative;z-index:3;max-width:920px;color:#fff}
.hero-inner .eyebrow{color:#ffd9a8}
.hero-inner .eyebrow::before,.hero-inner .eyebrow::after{background:rgba(249,115,22,.6)}
.hero-inner h1{font-size:clamp(30px,4.6vw,52px);font-weight:700;letter-spacing:1px;line-height:1.3;color:#fff;max-width:900px;margin:0 auto;text-shadow:0 2px 18px rgba(0,0,0,.35)}
.hero-inner h1 em{font-style:normal;color:#fbbf24}
.hero-inner .hero-sub{max-width:720px;margin:24px auto 0;font-size:16px;line-height:1.9;color:#dbe3f0}
.hero-inner .hero-cta{display:flex;gap:14px;margin-top:38px;flex-wrap:wrap;justify-content:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:4px;color:var(--brand);font-weight:600;margin-bottom:26px}
.eyebrow::before,.eyebrow::after{content:"";width:34px;height:1px;background:var(--brand2);opacity:.5}
.hero-nav{position:absolute;top:50%;transform:translateY(-50%);z-index:4;width:46px;height:46px;border-radius:50%;border:1px solid rgba(255,255,255,.4);background:rgba(6,15,38,.30);color:#fff;font-size:22px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:.2s}
.hero-nav:hover{background:var(--brand);border-color:var(--brand)}
.hero-nav.prev{left:18px}.hero-nav.next{right:18px}
.hero-dots{position:absolute;left:0;right:0;bottom:16px;z-index:4;display:flex;gap:9px;justify-content:center}
.hero-dots .dot{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.45);cursor:pointer;transition:.25s}
.hero-dots .dot.active{background:var(--brand);width:26px;border-radius:6px}

/* ===== 内页首屏（分类页 / 内容页共用） ===== */
.page-hero{
  position:relative;
  padding:8px 0 19px;text-align:left;overflow:hidden;
  background:
    radial-gradient(1100px 480px at 16% 8%, rgba(47,123,216,.10), transparent 60%),
    radial-gradient(900px 420px at 84% 92%, rgba(32,128,192,.08), transparent 60%),
    linear-gradient(180deg,#F6F8FB 0%,#EEF3FB 100%);
}
.page-hero h1{font-size:clamp(24px,3.4vw,38px);font-weight:700;letter-spacing:1px;line-height:1.3;margin-top:18px}
.page-hero-sub{margin:14px 0 0;font-size:15px;color:var(--sub);line-height:1.9;max-width:none;width:100%}
.cat-count{display:inline-block;margin-top:14px;padding:4px 14px;background:#fff;border:1px solid var(--line);border-radius:999px;font-size:13px;color:var(--sub)}

/* 面包屑（方案 C：箭头引导 + 左对齐） */
.breadcrumb{display:flex;align-items:center;justify-content:flex-start;flex-wrap:wrap;gap:7px;font-size:13px;color:var(--sub)}
.breadcrumb .bc-home{display:inline-flex;align-items:center;gap:6px;color:var(--sub);text-decoration:none;transition:color .2s;font-weight:500}
.breadcrumb .bc-home .bc-ico{width:14px;height:14px;stroke:var(--brand2);flex:none}
.breadcrumb .bc-home:hover{color:var(--brand)}
.breadcrumb .bc-arr{color:var(--brand2);font-size:12px;font-weight:700;opacity:.75}
.breadcrumb .bc-link{color:var(--sub);text-decoration:none;position:relative;padding:3px 0;transition:color .2s}
.breadcrumb .bc-link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--accent);transition:width .25s;border-radius:2px}
.breadcrumb .bc-link:hover{color:var(--brand)}
.breadcrumb .bc-link:hover::after{width:100%}
.breadcrumb .bc-cur{color:var(--brand);font-weight:700;padding:3px 8px;background:var(--soft);border-radius:6px}

/* ===== 通用 section ===== */
.section{padding:72px 0}
.section-head{text-align:center;margin-bottom:40px}
.section-kicker{font-size:13px;letter-spacing:3px;color:var(--brand);font-weight:600;margin-bottom:10px}
.section-title{font-size:clamp(22px,3.2vw,36px);font-weight:700;color:var(--ink)}
.section-desc{max-width:680px;margin:12px auto 0;color:var(--sub);font-size:15px}

/* ===== 法律条款页（服务条款 / 隐私条款） ===== */
.legal{padding:24px 0 64px}
.legal-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:40px 46px;margin-top:20px}
.legal-updated{display:inline-block;font-size:13px;color:var(--sub);background:#EEF3FB;border-radius:999px;padding:5px 14px;margin-bottom:22px}
.legal-card h2{font-size:19px;font-weight:700;color:var(--brand);margin:32px 0 14px;padding-left:14px;border-left:4px solid var(--accent);line-height:1.4}
.legal-card h2:first-child{margin-top:0}
.legal-card p{color:var(--sub);font-size:14.5px;line-height:1.95;margin-bottom:12px}
.legal-card ul{list-style:none;margin:0 0 14px;padding:0}
.legal-card ul li{position:relative;padding-left:22px;color:var(--sub);font-size:14.5px;line-height:1.9;margin-bottom:9px}
.legal-card ul li::before{content:"•";position:absolute;left:5px;color:var(--accent);font-weight:700;font-size:16px}
.legal-card a{color:var(--brand);text-decoration:underline}
.grid{display:grid;gap:20px}
.g-3{grid-template-columns:repeat(3,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;transition:all .25s}
.card:hover{transform:translateY(-4px);box-shadow:0 16px 40px rgba(20,40,90,.08);border-color:var(--brand2)}
.card h3{font-size:17px;font-weight:700;margin-bottom:8px;display:flex;align-items:center;gap:10px}
.card p{color:var(--sub);font-size:14px}
.card .card-link{margin-top:14px;display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--brand)}
.card .card-link:hover{color:var(--accent)}

/* ===== 分类页产品卡片 ===== */
.product-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.product-card{
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;
  display:flex;flex-direction:column;gap:10px;transition:all .25s;
}
.product-card:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(20,40,90,.08);border-color:var(--brand2)}
.product-card h3{font-size:15.5px;font-weight:600;line-height:1.5;color:var(--ink)}
.product-tip{font-size:12.5px;color:var(--sub);flex:1}
.product-card .btn{align-self:flex-start}

/* 分类间导航（上/返回/下） */
.cat-nav{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap;margin-top:20px;padding-top:20px;border-top:1px solid var(--line)}
.section-catnav{padding:0 0 20px}
.cat-nav .btn{border:1px solid var(--line);background:#fff;color:var(--ink)}
.cat-nav .btn:hover{border-color:var(--brand);color:var(--brand)}
.cat-nav .btn-primary{border-color:transparent;background:var(--brand);color:#fff}
.cat-nav .btn-primary:hover{color:#fff}

/* ===== 产品总览页 ===== */
.cat-block{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px;margin-bottom:20px}
.cat-block-head{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:14px}
.cat-block-head h2{font-size:20px;font-weight:700}
.cat-block-head h2 a:hover{color:var(--brand)}
.cat-pills{display:flex;flex-wrap:wrap;gap:8px}
.cat-pills a{
  display:inline-flex;padding:7px 14px;border:1px solid var(--line);border-radius:8px;
  font-size:13px;color:var(--ink);background:var(--bg);
}
.cat-pills a:hover{border-color:var(--brand);color:var(--brand);background:var(--soft)}

/* ===== 底部 CTA 条 ===== */
.cta-strip{
  background:linear-gradient(120deg,#1E5AA8 0%,#2F7BD8 100%);
  border-radius:18px;color:#fff;text-align:center;
  padding:44px 28px;margin:8px 0 0;
}
.cta-strip h2{font-size:clamp(20px,2.8vw,30px);font-weight:700;margin-bottom:12px}
.cta-strip p{font-size:14.5px;opacity:.92;max-width:640px;margin:0 auto 22px}
.cta-strip .btn-primary{background:#fff;color:var(--brand);box-shadow:none}
.cta-strip .btn-primary:hover{background:#F6F8FB}

/* ===== 内容页排版（about / equip / cases） ===== */
.prose{max-width:860px;margin:0 auto}
.prose h2{font-size:24px;font-weight:700;margin:44px 0 14px;color:var(--ink)}
.prose p{color:var(--sub);font-size:15px;line-height:1.95;margin-bottom:14px}
.prose ul{list-style:disc;padding-left:22px;color:var(--sub);font-size:15px;line-height:2}
.prose ul li{margin-bottom:4px}
.prose .lead{font-size:16px;color:var(--ink)}
.feature-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;max-width:900px;margin:34px auto 0}
.feature-grid .card h3{color:var(--brand)}
.equip-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;max-width:860px;margin:30px auto 0}
.equip-item{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:6px 12px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:13px 18px;cursor:pointer;transition:border-color .2s,box-shadow .2s}
.equip-item:hover{border-color:var(--brand2);box-shadow:0 8px 22px rgba(20,40,90,.07)}
.equip-item::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent)}
.equip-name{font-size:14.5px;font-weight:500}
.equip-toggle{display:inline-flex;align-items:center;gap:4px;color:var(--sub);font-size:10px;font-weight:500;white-space:nowrap;cursor:pointer;justify-self:end}
.equip-toggle .et-arrow{color:var(--brand2);display:inline-block;transition:transform .25s;font-size:12px}
.equip-item.open .equip-toggle .et-arrow{transform:rotate(180deg)}
.equip-detail{grid-column:1 / -1;margin-top:6px;padding-top:10px;border-top:1px dashed var(--line)}
.equip-detail img{max-width:100%;height:auto;border-radius:10px;display:block}
.case-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;max-width:1000px;margin:34px auto 0}
.case-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px}
.case-card .tag{display:inline-block;font-size:11.5px;letter-spacing:1px;color:var(--brand);background:var(--soft);border-radius:999px;padding:3px 10px;margin-bottom:10px}
.case-card h3{font-size:15.5px;font-weight:700;margin-bottom:8px}
.case-card p{font-size:13.5px;color:var(--sub);line-height:1.8}
.case-more{display:inline-flex;align-items:center;gap:6px;margin-top:14px;padding:8px 22px;background:var(--brand);color:#fff;border:none;border-radius:8px;font-size:13px;font-weight:600;cursor:pointer;font-family:inherit;transition:background .2s}
.case-more:hover,.case-more.active{background:var(--brand2)}
.case-more .cm-arrow{font-size:10px;transition:transform .25s}
.case-more.active .cm-arrow{transform:rotate(180deg)}
.case-detail{grid-column:1 / -1;margin-top:16px}
.case-detail[hidden]{display:none}
.case-detail-inner{background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px;overflow:hidden;animation:fadeUp .25s ease}
.case-detail-inner img{display:block;width:100%;height:auto;border-radius:8px}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* ===== 联系页 ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:34px;max-width:980px;margin:0 auto}
.info-list{display:flex;flex-direction:column;gap:16px}
.info-item{display:flex;gap:14px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 20px}
.info-item .ico{font-size:20px;line-height:1.4;color:var(--brand)}
.info-item .lab{font-size:12px;color:var(--sub);letter-spacing:1px;margin-bottom:2px}
.info-item .val{font-size:14.5px;font-weight:600}
.form-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px}
.form-card h2{font-size:18px;font-weight:700;margin-bottom:16px}
.form-row{margin-bottom:14px}
.form-row label{display:block;font-size:13px;color:var(--sub);margin-bottom:6px}
.form-row input,.form-row textarea{
  width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:9px;
  font-size:14px;font-family:inherit;color:var(--ink);background:var(--bg);
}
.form-row input:focus,.form-row textarea:focus{outline:none;border-color:var(--brand);background:#fff}
.form-note{font-size:12px;color:var(--sub);margin-top:10px}

/* ===== Footer ===== */
.footer{background:#0F1B33;color:#C7D2E4;padding:28px 0 24px}
.footer-main{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:30px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px}
.footer ul li{margin-bottom:9px;font-size:13px}
.footer a{font-size:13px;color:#C7D2E4}
.footer a:hover{color:#fff}
.footer-brand .ft-cn{font-size:20px;font-weight:700;color:#fff;letter-spacing:2px}
.footer-brand .ft-en{font-size:11px;letter-spacing:2px;color:#7E90AC;margin-bottom:12px}
.footer-brand p{font-size:13px;line-height:1.8;color:#A9B8CE;max-width:360px}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;padding-top:20px;flex-wrap:wrap;gap:12px}
.footer-bottom .copy{font-size:13px;color:#7E90AC}
.footer-links{display:inline-flex;align-items:center;gap:10px}
.footer-bottom a.copy{color:#9FB3CC;transition:color .2s}
.footer-bottom a.copy:hover{color:#fff}

/* ===== 手机端汉堡菜单 ===== */
.menu-btn{display:none;align-items:center;justify-content:center;width:40px;height:40px;background:transparent;border:1px solid var(--line);border-radius:8px;cursor:pointer;flex:none}
.menu-btn svg{width:22px;height:22px;stroke:var(--ink)}
.menu-btn:hover{border-color:var(--brand)}
.mobile-menu{position:fixed;inset:0;z-index:120;display:none}
.mobile-menu.open{display:block}
.mobile-menu .mm-mask{position:absolute;inset:0;background:rgba(9,20,40,.5)}
.mobile-menu .mm-panel{position:absolute;top:0;right:0;bottom:0;width:min(88vw,380px);background:#fff;display:flex;flex-direction:column;box-shadow:-12px 0 40px rgba(9,20,40,.18);transform:translateX(100%);transition:transform .3s ease}
.mobile-menu.open .mm-panel{transform:translateX(0)}
.mm-head{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-bottom:1px solid var(--line);flex:none}
.mm-brand{display:flex;align-items:center;gap:10px}
.mm-brand img{height:38px;width:auto}
.mm-brand-text{display:flex;flex-direction:column;line-height:1.2}
.mm-cn{font-size:15px;font-weight:700;letter-spacing:1px;color:var(--ink)}
.mm-en{font-size:10px;letter-spacing:1px;color:var(--sub);font-weight:600}
.mm-en{font-size:9px;letter-spacing:1px;color:var(--sub)}
.mm-close{background:none;border:none;cursor:pointer;width:40px;height:40px;display:flex;align-items:center;justify-content:center}
.mm-close svg{width:22px;height:22px;stroke:var(--ink)}
.mm-links{flex:1;overflow-y:auto;padding:10px 12px 24px;display:flex;flex-direction:column;gap:2px}
.mm-links a,.mm-parent{display:flex;align-items:center;justify-content:space-between;width:100%;box-sizing:border-box;padding:13px 14px;font-size:15px;font-weight:600;color:var(--ink);border-radius:10px;background:transparent;border:none;font-family:inherit;text-align:left;cursor:pointer;gap:8px}
.mm-links a:hover,.mm-parent:hover{background:var(--soft);color:var(--brand)}
.mm-group.open>.mm-parent .caret{transform:rotate(180deg)}
.mm-sub{display:none;padding-left:6px}
.mm-group.open>.mm-sub{display:block}
.mm-sub a{padding:11px 18px;font-size:14px;font-weight:500;color:var(--sub);border-radius:8px}
.mm-sub .mm-parent{font-size:14px;font-weight:600;color:var(--ink);padding:11px 18px}
.mm-parent .caret{font-size:11px;color:var(--sub);transition:transform .25s;flex:none}
.mm-sub a:hover{color:var(--brand);background:var(--soft)}
.mm-lang{flex:none;border-top:1px solid var(--line);padding:12px 14px}
.mm-lang-title{font-size:12px;color:var(--sub);margin-bottom:8px}
.mm-lang-list{display:flex;flex-wrap:wrap;gap:6px}
.mm-lang-list a{display:inline-flex;padding:7px 12px;font-size:13px;border:1px solid var(--line);border-radius:8px;color:var(--ink);cursor:pointer;font-weight:500}
.mm-lang-list a.active{color:#fff;background:var(--brand);border-color:var(--brand)}
.mm-lang-list a:hover{border-color:var(--brand);color:var(--brand)}

/* ===== 响应式 ===== */
@media(max-width:980px){
  .menu-btn{display:flex;width:40px;height:40px}
  .nav{display:none}
  .topbar-inner{padding:10px 14px 10px 24px}
  .lang{height:40px;padding:0 14px}
  .lang-list{position:fixed;right:14px;top:64px}
  .g-3{grid-template-columns:1fr}
  .footer-main{grid-template-columns:1fr;gap:0}
  .ft-col{border-bottom:1px solid rgba(255,255,255,.12);padding:4px 0}
  .ft-col h4{cursor:pointer;margin-bottom:2px;position:relative;padding-right:24px}
  .ft-col h4::after{content:"+";position:absolute;right:2px;top:-1px;color:#9FB3CC;font-size:17px;font-weight:600;transition:transform .2s}
  .ft-col.open h4::after{content:"−"}
  .ft-col ul{display:none;padding-bottom:12px}
  .ft-col.open ul{display:block}
  .footer-brand{border-bottom:1px solid rgba(255,255,255,.12);padding-bottom:16px;margin-bottom:4px}
  .product-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .case-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .equip-list{grid-template-columns:1fr}
}
@media(max-width:640px){
  .topbar-inner{padding:10px 14px 10px 16px;gap:8px}
  .brand-logo{height:36px}
  .brand-cn{font-size:16px;letter-spacing:1px}
  .brand-en{font-size:11px;letter-spacing:1px}
  .lang{padding:0 12px;height:40px}
  .menu-btn{width:40px;height:40px}
  .hero-inner h1{font-size:21px;line-height:1.35;white-space:normal}
  .hero-inner .hero-sub{font-size:14px}
  .hero-nav{width:34px;height:34px;font-size:16px}
  .hero-nav.prev{left:10px}.hero-nav.next{right:10px}
  .hero{padding-left:18px;padding-right:18px}
  .product-grid{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr}
  .page-hero{padding:6px 0 15px}
  .cat-nav{flex-direction:column}
  .cat-nav .btn{width:100%}
}

/* ===== 询价提交结果提示 ===== */
.alert{
  border:1px solid var(--line);
  border-radius:8px;
  padding:14px 18px;
  font-size:15px;
  line-height:1.6;
}
.alert-success{
  background:#EAF6EE;
  border-color:#BFE3CE;
  color:#1F7A3D;
}
.alert-error{
  background:#FDF0EE;
  border-color:#F4C9C2;
  color:#B3402A;
}

/* ===== 分类页产品切换标签（promo-tabs）：点击切换，其余产品内容隐藏，图片不加载 ===== */
/* 按钮条上下留白对称：上方 padding-top 与 promo-section 的 padding-top 一致，保证按钮到上下两条横线距离相同 */
.promo-tabs-wrap{padding:20px 0 0}
.promo-tabs{display:flex;flex-wrap:wrap;gap:10px}
.promo-tab{
  padding:9px 20px;border:1px solid var(--brand);border-radius:8px;
  background:var(--brand);color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:all .2s;line-height:1.4;
  box-shadow:0 4px 12px rgba(30,90,168,.16);
}
.promo-tab:hover{background:#184d90;border-color:#184d90;color:#fff}
.promo-tab.active{background:var(--accent);border-color:var(--accent);box-shadow:0 4px 14px rgba(232,121,10,.26)}
.promo-block.promo-hidden{display:none}
@media(max-width:640px){
  .promo-tab{padding:8px 13px;font-size:13px}
  .promo-tabs{gap:8px}
}

/* ===== 油炸机系列图文板块（fryer_promo.php）· 前两块左右正反，第三块图片全宽文字在下方 ===== */
.promo-section{padding:20px 0 0}
.promo-block{
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:28px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;margin-bottom:26px;
  scroll-margin-top:110px;transition:all .25s;
}
.promo-block:hover{box-shadow:0 16px 40px rgba(20,40,90,.08);border-color:var(--brand2)}
.promo-media{overflow:hidden;border-radius:14px;background:#F0F3F8}
.promo-media img{width:auto;height:auto;min-height:0;object-fit:contain;max-width:100%;max-height:none;display:block;margin:0 auto}
.promo-body h3{font-size:clamp(20px,2.6vw,26px);font-weight:700;color:var(--brand);margin-bottom:2px}
.promo-sub{color:var(--sub);font-size:13px;letter-spacing:1px;margin-bottom:14px}
.promo-label{
  display:inline-block;background:var(--brand);color:#fff;font-size:12px;font-weight:600;
  padding:3px 12px;border-radius:20px;margin:10px 0 8px;
}
.promo-body p{color:var(--sub);font-size:14.5px;line-height:1.9;margin-bottom:10px}
/* 咨询报价按钮 · LOGO 橙色 */
.promo-btn{margin-top:8px;background:var(--accent);box-shadow:0 8px 22px rgba(232,121,10,.28)}
.promo-btn:hover{background:#cf6808;color:#fff;transform:translateY(-2px)}
/* 咨询报价 + 查看更多明细 按钮行 */
.promo-actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:8px}
.promo-actions .promo-btn{margin-top:0}
/* 查看更多明细按钮 · 页面蓝色实底白字 */
.promo-more{background:var(--brand);border:1px solid var(--brand);color:#fff;box-shadow:none;padding:10px 20px;border-radius:10px;font-size:14px;font-weight:600;cursor:pointer;transition:all .25s;display:inline-flex;align-items:center;gap:7px;line-height:1.4}
.promo-more:hover{background:#184d90;border-color:#184d90;color:#fff}
.promo-more .pm-arrow{font-size:19px;line-height:1;transition:transform .2s;display:inline-block;vertical-align:middle}
.promo-more[aria-expanded="true"]{background:#1A4F95;border-color:#1A4F95}
.promo-more[aria-expanded="true"] .pm-arrow{transform:rotate(180deg)}
/* 折叠的“更多明细”区 */
/* 明细框全宽：锁定图片与文字在首行，明细框横跨全宽置于下方，避免图片被挤到明细下方 */
.promo-block:not(.promo-block-stacked) .promo-media,
.promo-block:not(.promo-block-stacked) .promo-body{grid-row:1}
.promo-block:not(.promo-block-stacked) .promo-detail{grid-row:2}
.promo-detail{grid-column:1 / -1;margin:14px 0 0;padding:16px 18px;background:#F6F8FB;border:1px solid var(--line);border-radius:12px}
.promo-detail .promo-label{margin:0 0 6px}
.promo-detail p{color:var(--sub);font-size:14px;line-height:1.9;margin-bottom:8px}
.promo-detail p:last-child{margin-bottom:0}
.promo-detail .promo-scope{margin:0 0 4px;padding:0;list-style:none}
.promo-detail .promo-scope li{color:var(--sub);font-size:14px;line-height:1.9;margin-bottom:4px}
.promo-detail .promo-adv{margin:0;padding:0;list-style:none}
.promo-detail .promo-adv li{color:var(--sub);font-size:14px;line-height:1.9;margin-bottom:4px;padding-left:18px;position:relative}
.promo-detail .promo-adv li::before{content:"◆";color:var(--accent);position:absolute;left:0;top:0;font-size:11px}
/* 明细区技术参数表格 */
.promo-spec-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin-top:2px;max-width:100%}
.promo-spec{width:100%;border-collapse:collapse;font-size:13px;min-width:640px;margin:0}
.promo-spec th,.promo-spec td{border:1px solid #dbe3ef;padding:8px 10px;text-align:center;white-space:nowrap;background:#fff}
.promo-spec thead th{background:var(--brand);color:#fff;font-weight:600}
.promo-spec .spec-param{background:#eef3fb;color:var(--ink);font-weight:600;text-align:left;white-space:nowrap}
/* 适用范围下的食物小图 */
.promo-food{margin:8px 0 0}
.promo-food img{max-width:100%;height:auto;border-radius:12px;display:block}
/* 优点 / 适用范围 列表 */
.promo-adv,.promo-scope{list-style:none;margin:0 0 10px;padding:0}
.promo-adv li,.promo-scope li{color:var(--sub);font-size:14px;line-height:1.9;margin-bottom:4px}
.promo-adv li{padding-left:18px;position:relative}
.promo-adv li::before{content:"◆";color:var(--accent);position:absolute;left:0;top:0;font-size:11px}
.promo-scope li{padding-left:0}
.promo-flow-label{font-weight:700;color:var(--ink);font-size:14px;margin-top:6px}
.promo-flow-label2{color:var(--sub);font-size:13.5px;margin:4px 0 8px;line-height:1.7}
.promo-flow-label3{font-weight:600;color:var(--ink);font-size:13.5px;margin:10px 0 6px}
.promo-flow-steps{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-bottom:6px}
.flow-step{background:#EEF3FA;border:1px solid #D9E4F2;color:var(--ink);font-size:13px;padding:5px 10px;border-radius:8px;white-space:normal}
.flow-arrow{color:var(--accent);font-weight:700}
/* 第二块：图片在右（正反结构） */
.promo-block-rev .promo-media{order:2}
/* 第三块（薯条生产线）：单列，图片全宽，文字在下方 */
.promo-block-stacked{grid-template-columns:1fr;gap:20px;padding:20px}
.promo-block-stacked .promo-media img{height:auto;min-height:0;object-fit:contain}
/* 通栏模块（软包装流水线）：单列，标题下图片占满模块内宽 */
.promo-block-wide{grid-template-columns:1fr;gap:20px;padding:20px}
.promo-block-wide .promo-media-wide{overflow:hidden;border-radius:14px;background:#F0F3F8}
.promo-block-wide .promo-media-wide img{width:100%;height:auto;min-height:0;object-fit:contain;display:block}
/* 展开明细时：图片全宽置顶于简介上方、明细全宽于下方（收起后恢复原左右正反结构） */
.promo-block.promo-open{grid-template-columns:minmax(0,1fr);gap:18px}
.promo-block.promo-open .promo-media,
.promo-block.promo-open .promo-body{grid-row:auto}
.promo-block.promo-open .promo-media{order:-1;min-width:0}
.promo-block.promo-open .promo-media img{width:auto;height:auto;min-height:0;object-fit:contain;max-width:100%;max-height:none;margin:0 auto}
.promo-block.promo-open .promo-detail{grid-row:auto;min-width:0}
@media(max-width:760px){
  .promo-block{grid-template-columns:1fr;padding:16px;gap:18px}
  .promo-block .promo-media{order:-1} /* 手机端：无论桌面图在左/右，图片始终显示在文字上方 */
  .promo-media img{width:100%;height:auto;min-height:0;max-width:100%;object-fit:contain;max-height:none} /* 图片自动等比缩放，不溢出方框、不裁剪 */
  .promo-block.promo-open .promo-media img{width:100%;max-width:100%;margin:0 auto} /* 手机端：展开时图片全宽置顶，等比不放大超出容器 */
  .promo-block-stacked .promo-media img{height:auto;min-height:0;max-height:none}
  .promo-block-wide .promo-media-wide img{height:auto;min-height:0;max-height:none}
  .promo-flow-steps{gap:4px}
}

/* ===== 首页客户 LOGO 墙（客户案例模块） ===== */
.customer-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:18px;margin-top:6px}
.customer-item{background:#fff;border:1px solid var(--line);border-radius:12px;display:flex;align-items:center;justify-content:center;padding:16px;min-height:100px}
.customer-item img{max-width:100%;max-height:70px;width:auto;height:auto;object-fit:contain}
@media(max-width:980px){.customer-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:640px){.customer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}