/* ============================================================
   Yuehua Blinds 全站样式（首页 + 全局组件）
   依据 Yuehua_Design_Spec §1/§3.6/§3.7/§3.8/§5/§15/§16/§17
   ============================================================ */

/* ---------- 设计变量 ---------- */
:root{
  --primary:#2C3E50;
  --primary-dark:#1A252F;
  --primary-light:#3D566E;
  --accent:#5B8DB8;
  --accent-dark:#4A7AA3;
  --accent-light:#7BA5C9;
  --white:#FFFFFF;
  --bg-soft:#FAFBFC;
  --line:#E1E8ED;
  --line-soft:#EEF2F5;
  --text:#2C3E50;
  --text2:#6B7C8D;
  --text3:#7F8C8D;
  --footer-bg:#10222B;
  --whatsapp:#25D366;
  --badge-blue:#2F6FB0;
  --sh1:0 1px 2px rgba(0,0,0,.04), 0 2px 10px rgba(0,0,0,.06);
  --sh2:0 4px 14px rgba(0,0,0,.12);
  --radius:8px;
  --radius-card:4px;
  --col:900px; /* 文章页内容列宽（2026-10-20 统一变量，方案B） */
  --font:"Segoe UI", Arial, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  --header-h:72px;
}

/* ---------- Reset / Base ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
html,body{overflow-x:clip;max-width:100%;}
body{margin:0;font-family:var(--font);color:var(--text);background:var(--white);
     -webkit-font-smoothing:antialiased;line-height:1.5;}
h1,h2,h3,h4,p,figure{margin:0;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button{font-family:inherit;}
ul{margin:0;padding:0;list-style:none;}
.site-main{min-height:60vh;}
.container{max-width:1280px;margin:0 auto;padding:0 40px;}
.nowrap{white-space:nowrap;}
[hidden]{display:none !important;}
body.scroll-lock{overflow:hidden;}

/* ---------- 按钮体系 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
     border-radius:var(--radius);font-weight:700;border:1px solid transparent;
     cursor:pointer;transition:background .18s,border-color .18s,color .18s,transform .18s;
     text-align:center;line-height:1.2;}
.btn-dark{background:var(--primary-dark);color:#fff;border-color:var(--primary-dark);}
.btn-dark:hover{background:var(--primary-light);border-color:var(--primary-light);}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary);}
.btn-primary:hover{background:var(--primary-light);border-color:var(--primary-light);}
.btn-outline{background:#fff;color:var(--text);border-color:var(--line);}
.btn-outline:hover{background:#F4F7FA;border-color:var(--accent);color:var(--accent);}
.btn-light{background:#fff;color:var(--primary-dark);border-color:#fff;}
.btn-light:hover{background:#F0F3F6;}
.btn-sm{height:36px;padding:0 18px;font-size:13px;}
.btn:disabled,.btn.disabled{background:#EDF1F4;color:#A9B6C0;border-color:#EDF1F4;cursor:not-allowed;}

/* ============================================================
   Header
   ============================================================ */
.site-header{position:-webkit-sticky;position:sticky;top:0;z-index:80;background:#fff;
             border-bottom:1px solid var(--line);height:var(--header-h);}
.header-inner{height:100%;max-width:1280px;margin:0 auto;padding:0 40px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:20px;}
.header-logo{flex-shrink:0;display:flex;align-items:center;justify-self:start;}
.header-logo img{max-height:40px;max-width:200px;width:auto;height:auto;object-fit:contain;}

.main-nav{display:flex;align-items:center;gap:26px;justify-self:center;}
.nav-item{position:static;}
.nav-link{font-size:15px;font-weight:500;color:var(--text2);padding:25px 0;
          position:relative;transition:color .18s;display:inline-flex;align-items:center;}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:18px;height:2px;
                 background:var(--accent);transform:scaleX(0);transition:transform .18s;}
.nav-link:hover{color:var(--accent);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--text);font-weight:600;}

/* 下拉指示小三角（Products / Knowledge） */
.nav-caret{width:9px;height:9px;margin-left:5px;flex-shrink:0;
           color:var(--text2);opacity:.65;transition:transform .2s,opacity .2s;}
.nav-item.has-dropdown:hover .nav-caret{transform:rotate(180deg);opacity:1;}
.nav-link.active .nav-caret{color:var(--text);opacity:1;}

/* 桌面下拉 */
.nav-item{position:relative;}
.nav-dropdown{position:absolute;top:100%;left:0;min-width:236px;background:#fff;
              border:1px solid var(--line);border-radius:var(--radius);
              box-shadow:0 12px 32px rgba(16,34,43,.14);padding:8px;
              max-height:calc(100dvh - 80px);overflow-y:auto;
              opacity:0;visibility:hidden;transform:translateY(6px);transition:.18s;}
.nav-item:hover .nav-dropdown{opacity:1;visibility:visible;transform:translateY(0);}
.nav-dropdown a{display:flex;justify-content:space-between;align-items:center;gap:12px;
                padding:9px 12px;border-radius:6px;font-size:14px;color:var(--text);}
.nav-dropdown a:hover{background:var(--bg-soft);}
.dropdown-count{color:var(--text2);font-size:12px;}
.dropdown-all{border-top:1px solid var(--line);border-radius:0 0 6px 6px;
              margin-top:4px;font-weight:600;justify-content:flex-start !important;}

/* Header 右侧 */
.header-actions{display:flex;align-items:center;gap:14px;flex-shrink:0;justify-self:end;}
.lang-switch{position:relative;}
.lang-current{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
              padding:8px 12px;font-size:13px;font-weight:700;cursor:pointer;color:var(--text);}
.lang-dropdown{position:absolute;top:calc(100% + 6px);right:0;min-width:158px;background:#fff;
               border:1px solid var(--line);border-radius:var(--radius);
               box-shadow:var(--sh2);padding:6px;display:none;z-index:85;}
.lang-switch.open .lang-dropdown{display:block;}
.lang-dropdown a{display:flex;align-items:center;justify-content:space-between;gap:10px;
                 padding:9px 12px;border-radius:6px;font-size:14px;color:var(--text);}
.lang-dropdown a .lang-ck{width:16px;height:16px;stroke:var(--accent-dark);fill:none;
                 stroke-width:2;opacity:0;flex-shrink:0;}
.lang-dropdown a.active{color:var(--accent-dark);font-weight:700;}
.lang-dropdown a.active .lang-ck{opacity:1;}
.lang-dropdown a:hover{background:var(--bg-soft);}

.cart-link{position:relative;width:40px;height:40px;border:1px solid var(--line);
          border-radius:var(--radius);display:flex;align-items:center;justify-content:center;
          color:var(--text);transition:.18s;}
.cart-link:hover{border-color:var(--accent);color:var(--accent);}
.cart-badge{position:absolute;top:-7px;right:-7px;background:var(--badge-blue);color:#fff;
            font-size:11px;font-weight:700;min-width:18px;height:18px;border-radius:9px;
            display:flex;align-items:center;justify-content:center;padding:0 4px;}
.header-quote{background:var(--primary-dark);color:#fff;border-radius:var(--radius);
              padding:11px 18px;font-size:14px;font-weight:700;}
.header-quote:hover{background:var(--primary-light);color:#fff;}
.quote-short{display:none;}
.hamburger{display:none;}

/* ============================================================
   Header 中间宽度适配（折叠展开 / 小平板，§D 定稿 2026-10-04）
   置于 ≤760 主块之前：≤760 时由主块（logo 130 等）胜出；761-840 才用本块
   ============================================================ */
@media (max-width:840px){
  .site-header{height:60px;}
  .header-inner{padding:0 24px;gap:10px;display:flex;grid-template-columns:none;}
  .header-logo img{max-height:28px;max-width:160px;}
  .header-logo{min-width:0;flex:0 1 auto;}
  .main-nav{display:none;}
  .header-actions{gap:8px;margin-left:auto;}
  .header-quote{display:none;}
  .hamburger{display:flex;flex-direction:column;justify-content:center;align-items:flex-end;
             gap:4px;width:36px;height:36px;background:none;border:none;cursor:pointer;}
  .hamburger span{display:block;width:19px;height:2px;background:var(--text);border-radius:1px;}
}
@media (min-width:841px) and (max-width:1023px){
  .main-nav{gap:14px;}
  .header-logo img{max-width:160px;}
  .header-quote{display:none;}
  .nav-link{white-space:nowrap;}
}

/* ============================================================
   移动抽屉
   ============================================================ */
.drawer-overlay{position:fixed;inset:0;background:rgba(0,0,0,.42);z-index:90;
                opacity:0;transition:opacity .26s;}
.drawer-overlay.open{opacity:1;}
.drawer{position:fixed;top:0;right:0;bottom:0;width:78%;max-width:330px;background:#fff;
        z-index:100;transform:translateX(102%);transition:transform .26s ease;
        padding:72px 26px 26px;box-shadow:-6px 0 20px rgba(0,0,0,.12);overflow-y:auto;}
.drawer.open{transform:translateX(0);}
.drawer-close{position:absolute;top:12px;right:12px;width:36px;height:36px;
              border-radius:var(--radius);color:var(--text2);background:#fff;border:none;
              display:flex;align-items:center;justify-content:center;}
.drawer-close:hover{background:var(--bg-soft);color:var(--text);}
.drawer-nav{display:flex;flex-direction:column;gap:2px;}
.drawer-nav>a,.drawer-parent{padding:13px 8px;font-size:16px;font-weight:600;color:var(--text);
                             text-align:left;background:none;border:none;width:100%;
                             display:flex;justify-content:space-between;align-items:center;cursor:pointer;}
.drawer-parent{font-family:inherit;}
.drawer-arrow{width:10px;height:10px;border-right:2px solid var(--text2);
              border-bottom:2px solid var(--text2);transform:rotate(45deg);transition:.2s;}
.drawer-group.open .drawer-arrow{transform:rotate(-135deg);}
.drawer-sub{display:none;flex-direction:column;padding-left:14px;}
.drawer-group.open .drawer-sub{display:flex;}
.drawer-sub a{padding:11px 8px;font-size:14px;color:var(--text2);}
.drawer-sub a:hover{color:var(--accent);}

/* ============================================================
   Splash
   ============================================================ */
/* ===== Splash 开场动画（严格对齐定稿 demo v2：absolute 布局 + 渐变遮罩 + clamp 自适应） ===== */
.splash{position:fixed;inset:0;z-index:1000;overflow:hidden;background:#14120f;opacity:1;transition:opacity .8s ease;font-family:"Helvetica Neue",Helvetica,Arial,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;}
.splash-media{position:absolute;inset:0;z-index:1;display:flex;align-items:center;justify-content:center;}
.splash-video{width:100%;height:100%;object-fit:cover;display:block;opacity:0;transition:opacity .5s ease;}
/* B：视频就绪并播放后淡入显示（加载中/网络卡时透明，露出背景图兜底） */
.splash-video.is-playing{opacity:1;}
/* A：隐藏浏览器原生视频控件/大播放按钮（网络卡顿时不显示圆形播放键） */
.splash-video::-webkit-media-controls,
.splash-video::-webkit-media-controls-enclosure,
.splash-video::-webkit-media-controls-panel,
.splash-video::-webkit-media-controls-start-playback-button,
.splash-video::-webkit-media-controls-play-button,
.splash-video::-webkit-media-controls-overlay-play-button{
  display:none !important;}
.splash-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;}
.splash-bg-portrait{display:none;}
@media (orientation:portrait){
  .splash-bg-landscape{display:none;}
  .splash-bg-portrait{display:block;}
}
/* 桌面遮罩：左深右浅暖炭灰渐变 + 底部压暗（demo .scrim） */
.splash-scrim{position:absolute;inset:0;z-index:2;background:linear-gradient(100deg,rgba(47,45,42,.92) 0%,rgba(47,45,42,.72) 26%,rgba(47,45,42,.38) 52%,rgba(47,45,42,.10) 74%,rgba(47,45,42,0) 90%);}
.splash-scrim::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(47,45,42,.22) 0%,rgba(47,45,42,0) 18%,rgba(47,45,42,0) 78%,rgba(20,18,15,.42) 100%);}
/* 品牌（左上，demo #brand） */
.splash-brand{position:absolute;top:clamp(24px,3.6vh,52px);left:clamp(48px,7vw,120px);z-index:3;line-height:1;}
.splash-logo{height:clamp(26px,3.2vh,44px);width:auto;max-width:min(46vw,420px);object-fit:contain;display:block;filter:drop-shadow(0 2px 8px rgba(0,0,0,.35));}
/* 文字块（左侧垂直居中，demo #text-block） */
.splash-text{position:absolute;top:45%;left:clamp(48px,7vw,120px);transform:translateY(-50%);z-index:3;width:clamp(380px,46vw,760px);color:#fff;text-align:left;}
.splash-title{font-size:clamp(40px,4.8vw,76px);font-weight:600;line-height:1.12;letter-spacing:.01em;text-shadow:0 2px 18px rgba(0,0,0,.28);margin:0;}
.splash-title .ph{white-space:nowrap;}
.splash-title .sep{white-space:normal;}
.splash-sub{margin-top:clamp(18px,2.6vh,34px);}
.splash-sub1,.splash-sub2{font-size:clamp(17px,1.55vw,24px);font-weight:400;line-height:1.55;color:rgba(255,255,255,.86);text-shadow:0 1px 12px rgba(0,0,0,.25);margin:0;}
.splash-sub2{margin-top:6px;}
/* CTA：长度随文案自适应（不改字号间距，demo #cta） */
.splash-cta{margin-top:clamp(30px,4.4vh,56px);display:inline-flex;align-items:center;padding:15px 40px;border:1.5px solid rgba(255,255,255,.9);border-radius:999px;color:#fff;font-size:clamp(15px,1.25vw,19px);font-weight:500;letter-spacing:.04em;background:transparent;cursor:pointer;white-space:nowrap;transition:background .25s ease,color .25s ease,border-color .25s ease;}
.splash-cta:hover{background:#fff;color:#2f2d2a;border-color:#fff;}
/* 静音开关（右上，demo #sound；双图标 class 切换） */
.splash-sound{position:absolute;top:clamp(24px,3.6vh,52px);right:clamp(28px,4vw,64px);z-index:3;width:52px;height:52px;border-radius:50%;border:1.5px solid rgba(255,255,255,.85);background:rgba(20,18,15,.25);display:flex;align-items:center;justify-content:center;cursor:pointer;padding:0;transition:background .25s ease;}
.splash-sound:hover{background:rgba(255,255,255,.18);}
.splash-sound svg{width:22px;height:22px;fill:#fff;display:block;}
.splash-sound .splash-mute-icon{display:none;}
.splash-sound.muted .splash-wave-icon{display:none;}
.splash-sound.muted .splash-mute-icon{display:block;}
/* 滚动箭头（仅移动端显示，demo #arrows） */
.splash-arrows{position:absolute;bottom:calc(env(safe-area-inset-bottom,0px) + 20px);left:0;right:0;display:none;flex-direction:column;align-items:center;justify-content:flex-end;z-index:3;cursor:pointer;}
.splash-arrows svg{width:clamp(20px,5.5vw,28px);height:auto;fill:rgba(255,255,255,.70);margin:-3px 0;}
.splash-arrows .splash-a2{width:clamp(24px,6.5vw,32px);fill:rgba(255,255,255,.95);}
.splash-arrows .bob{animation:bob 1.6s ease-in-out infinite;}
.splash-arrows .splash-a1{animation-delay:0s;}
.splash-arrows .splash-a2{animation-delay:.18s;}
.splash-arrows .splash-a3{animation-delay:.36s;}
@keyframes bob{0%,100%{transform:translateY(0);}50%{transform:translateY(-6px);}}
.splash.fade-out{opacity:0;pointer-events:none;}
/* 移动端 / 竖屏：居中排版 + 顶部/底部双渐变 + 底部箭头（demo Mobile v2） */
@media (orientation:portrait),(max-width:760px){
  .splash-scrim{background:linear-gradient(180deg,rgba(20,18,15,.46) 0%,rgba(20,18,15,0) 24%),linear-gradient(180deg,rgba(47,45,42,0) 36%,rgba(47,45,42,.30) 58%,rgba(35,32,27,.62) 76%,rgba(20,18,15,.90) 100%);}
  .splash-scrim::after{background:none;}
  .splash-brand{top:calc(env(safe-area-inset-top,0px) + 20px);left:clamp(20px,6.5vw,30px);}
  .splash-logo{height:clamp(20px,4.5vw,32px);max-width:60vw;filter:drop-shadow(0 2px 10px rgba(20,18,15,.5));}
  .splash-text{left:clamp(24px,7vw,34px);right:clamp(24px,7vw,34px);width:auto;top:56%;text-align:left;}
  .splash-title{font-size:clamp(32px,8.5vw,46px);line-height:1.12;letter-spacing:.01em;text-shadow:0 2px 16px rgba(20,18,15,.45),0 1px 4px rgba(20,18,15,.35);}
  .splash-sub{margin-top:20px;}
  .splash-sub1,.splash-sub2{font-size:clamp(15px,3.7vw,20px);color:rgba(255,255,255,.88);text-shadow:0 1px 10px rgba(20,18,15,.40);}
  .splash-cta{margin-top:30px;padding:14px 38px;font-size:15px;letter-spacing:.02em;}
  .splash-sound{top:calc(env(safe-area-inset-top,0px) + 14px);right:clamp(18px,5.5vw,26px);background:rgba(30,27,23,.38);border:1.5px solid rgba(255,255,255,.55);}
  .splash-sound:active{background:rgba(255,255,255,.22);}
  .splash-arrows{display:flex;}
}

/* ============================================================
   Hero
   ============================================================ */
.hero{padding:56px 0 64px;}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:56px;align-items:stretch;}
.hero-lt{display:flex;flex-direction:column;justify-content:center;}
.badge{display:inline-flex;align-items:center;gap:10px;font-size:14px;font-weight:700;
       letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:16px;}
.badge::before{content:"";width:26px;height:2px;background:var(--accent);}
.iconbadge{display:inline-flex;align-items:center;gap:9px;color:var(--primary);
       font-size:14px;font-weight:600;letter-spacing:.01em;margin-bottom:16px;}
.iconbadge svg{width:19px;height:19px;stroke:var(--accent-dark);fill:none;
       stroke-width:1.7;flex-shrink:0;}
.hero h1{font-size:clamp(24px,6vw,42px);font-weight:800;line-height:1.14;letter-spacing:-.015em;
         color:var(--text);margin-bottom:16px;}
.hero-sub{font-size:16px;color:var(--text2);line-height:1.75;max-width:520px;margin-bottom:26px;}
.hero-btns{display:flex;gap:14px;margin-bottom:34px;flex-wrap:wrap;}
.hero-btns .btn{padding:13px 26px;font-size:15px;}
.hero-btns .btn-dark{font-weight:700;}
.hero-btns .btn-outline{font-weight:600;}
.hero-stats{display:flex;gap:36px;border-top:1px solid var(--line);padding-top:22px;flex-wrap:wrap;}
.stat{display:flex;flex-direction:column;}
.stat-num{font-size:24px;font-weight:800;color:var(--text);}
.stat-label{font-size:13px;color:var(--text2);}
.hero-rt{display:flex;gap:16px;align-items:stretch;}
.hero-col{flex:1.1;display:flex;flex-direction:column;gap:16px;min-width:0;}
.hero-im{flex:1;border-radius:6px;overflow:hidden;background:var(--bg-soft);
         position:relative;min-height:0;}
.hero-big{flex:1;border-radius:6px;overflow:hidden;background:var(--bg-soft);position:relative;}
.hero-rt img{width:100%;height:100%;object-fit:cover;position:relative;z-index:1;}

/* ---------- 图片容器 / 占位 ---------- */
.ratio-169{aspect-ratio:16/9;position:relative;overflow:hidden;background:var(--bg-soft);}
.ratio-169>img{width:100%;height:100%;object-fit:cover;position:relative;z-index:1;}
.img-ph-icon{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
             color:#C3CDD6;background:#F1F4F7;}
.protect-layer{position:absolute;inset:0;z-index:2;}

/* ============================================================
   通用区块头
   ============================================================ */
.home-section{padding:64px 0;}
.section-soft{background:var(--bg-soft);}
.sec-head{margin-bottom:40px;}
.sec-head h2{font-size:34px;font-weight:800;letter-spacing:-.01em;color:var(--text);}
.sec-head p{font-size:16px;color:var(--text2);line-height:1.7;max-width:720px;margin-top:12px;}
.sec-head-center{text-align:center;}
.sec-head-center p{margin-left:auto;margin-right:auto;}

/* ============================================================
   分类区 / 精选区 卡片网格
   ============================================================ */
.card-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;}
.cat-card,.feat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
                     box-shadow:var(--sh1);overflow:hidden;display:block;
                     transition:transform .18s,box-shadow .18s,border-color .18s;}
.cat-card:hover,.feat-card:hover{transform:translateY(-1px);box-shadow:var(--sh2);
                                  border-color:var(--accent);}
.card-im{background:var(--bg-soft);}
.card-bd{padding:14px 16px 16px;}
.cat-name{font-size:16px;font-weight:700;line-height:1.4;min-height:44.8px;color:var(--text);
          display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-meta{font-size:13px;color:var(--text2);display:block;margin-top:6px;}
.product-code{font-size:13px;font-weight:700;color:var(--accent);display:block;margin-bottom:3px;}
.product-name{font-size:15px;font-weight:600;line-height:1.4;min-height:42px;color:var(--text);
              display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* ============================================================
   四大优势
   ============================================================ */
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.why-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
          padding:28px 24px;box-shadow:var(--sh1);}
.why-icon{display:block;width:34px;height:34px;margin-bottom:16px;color:var(--accent);}
.why-icon svg{width:34px;height:34px;stroke:currentColor;stroke-width:1.4;fill:none;}
.why-card h3{font-size:17px;font-weight:700;margin-bottom:8px;color:var(--text);}
.why-card p{font-size:14px;color:var(--text2);line-height:1.65;}

/* ============================================================
   知识库
   ============================================================ */
.kb-list{display:flex;flex-direction:column;gap:18px;}
.kb-card{display:flex;gap:22px;background:#fff;border:1px solid var(--line);
         border-radius:var(--radius-card);box-shadow:var(--sh1);overflow:hidden;
         transition:transform .18s,box-shadow .18s,border-color .18s;}
.kb-card:hover{transform:translateY(-1px);box-shadow:var(--sh2);border-color:var(--accent);}
.kb-im{flex:0 0 250px;width:250px;align-self:stretch;background:var(--bg-soft);}
.kb-im.ratio-169{aspect-ratio:auto;}
.kb-im>img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;}
.kb-bd{padding:18px 22px 18px 0;display:flex;flex-direction:column;justify-content:center;min-width:0;flex:1;}
.kb-bd h3{font-size:18px;font-weight:700;line-height:1.4;margin-bottom:8px;color:var(--text);}
.kb-bd p{font-size:14px;color:var(--text2);line-height:1.7;
         display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.kb-view-all{margin-top:28px;text-align:center;}
.kb-view-all .btn{padding:12px 26px;font-size:14px;}

/* ============================================================
   信任条
   ============================================================ */
.trust-bar{background:#fff;}
.trust-inner{display:flex;max-width:980px;margin:0 auto;padding:20px 24px;}
.trust-seg{flex:1;display:flex;gap:12px;align-items:center;padding:0 24px;
           border-right:1px solid var(--line);min-width:0;}
.trust-seg:first-child{padding-left:0;}
.trust-seg:last-child{border-right:none;padding-right:0;}
.trust-icon{flex-shrink:0;width:24px;height:24px;color:var(--accent);}
.trust-icon svg{width:24px;height:24px;stroke:currentColor;stroke-width:1.6;fill:none;}
.trust-text{display:flex;flex-direction:column;min-width:0;}
.trust-t{font-size:13.5px;font-weight:600;color:var(--text);letter-spacing:.2px;white-space:nowrap;}
.trust-s{font-size:11.5px;font-weight:400;color:var(--text2);margin-top:2px;white-space:normal;line-height:1.45;}
/* About 页服务信任条（2026-10-16：OEM/ODM 单卡，同 Home 信任卡样式） */
.about-trust{margin-bottom:24px;}
.about-trust .trust-seg{justify-content:center;border-right:none;padding-left:0;padding-right:0;}

/* ============================================================
   CTA
   ============================================================ */
.home-cta{background:var(--primary-dark);padding:72px 0;}
.cta-inner{text-align:center;color:#fff;}
.cta-inner h2{font-size:32px;font-weight:800;margin-bottom:12px;color:#fff;}
.cta-inner p{font-size:16px;color:rgba(255,255,255,.78);line-height:1.7;
             max-width:640px;margin:0 auto 30px;}
.cta-inner .btn{padding:14px 32px;font-size:15px;}

/* ============================================================
   Footer
   ============================================================ */
.site-footer{background:var(--footer-bg);color:rgba(255,255,255,.72);}
.footer-grid{max-width:1280px;margin:0 auto;padding:56px 40px 0;
             display:grid;grid-template-columns:1.2fr 1fr 1.3fr;gap:56px;}
.footer-logo{display:flex;align-items:center;width:170px;height:54px;margin-bottom:18px;}
.footer-logo img{max-width:170px;max-height:54px;width:auto;height:auto;
                 object-fit:contain;filter:brightness(0) invert(1);}
.footer-desc{font-size:14px;color:rgba(255,255,255,.72);line-height:1.75;margin-bottom:20px;}
.footer-social{display:flex;gap:6px;margin-top:20px;flex-wrap:wrap;}
.footer-social a{transition:opacity .18s;}
.footer-social img{width:21px;height:21px;border-radius:5px;object-fit:cover;}
.footer-social a:hover{opacity:.85;}
.footer-title{font-size:18px;font-weight:700;color:#fff;margin-bottom:20px;}
.footer-links{text-align:center;}
.footer-links nav{display:flex;flex-direction:column;gap:12px;align-items:center;}
.footer-links a{font-size:14px;color:rgba(255,255,255,.72);transition:color .18s;}
.footer-links a:hover{color:#fff;}
.footer-contact{text-align:right;}
.footer-contact .footer-title{text-align:right;}
.contact-lines{display:flex;flex-direction:column;gap:10px;align-items:flex-end;}
.contact-lines p{font-size:14px;color:rgba(255,255,255,.78);line-height:1.6;text-align:right;}
.contact-email{color:var(--accent-light);}
.contact-email:hover{color:#fff;}
.footer-qr{display:flex;justify-content:flex-end;gap:10px;margin-top:20px;}
.qr-box{width:56px;height:56px;background:#fff;border:1px solid rgba(255,255,255,.25);
        border-radius:4px;padding:4px;}
.qr-box img{width:100%;height:100%;object-fit:contain;}
.whatsapp-bar{display:none;}
.footer-bottom{max-width:1280px;margin:0 auto;padding:22px 40px 26px;
               display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;}
.footer-copyright{font-size:13px;color:rgba(255,255,255,.6);}
.footer-legal{display:flex;gap:22px;flex-wrap:wrap;}
.footer-legal a{font-size:13px;color:rgba(255,255,255,.72);transition:color .18s;}
.footer-legal a:hover{color:#fff;}

/* ============================================================
   WhatsApp 直聊（形态由 布局 × 主指针 决定）
   ============================================================ */
.whatsapp-fab{display:none;}
/* 手机：移动布局 + 触摸 → Footer 内整条绿色按钮 */
@media (max-width:760px) and (pointer:coarse){
  .whatsapp-bar{display:flex;align-items:center;justify-content:center;gap:10px;
                background:var(--whatsapp);color:#fff;border-radius:var(--radius);
                padding:13px;margin-top:24px;font-size:14px;font-weight:700;}
  .whatsapp-bar-icon{width:22px;height:22px;background:#fff;border-radius:4px;
                     display:flex;align-items:center;justify-content:center;flex-shrink:0;}
  .whatsapp-bar-icon img{width:20px;height:20px;object-fit:contain;}
}
/* iPad：桌面布局 + 触摸 → 右下 FAB */
@media (min-width:761px) and (pointer:coarse){
  .whatsapp-fab{display:flex;align-items:center;justify-content:center;
                position:fixed;bottom:calc(24px + env(safe-area-inset-bottom));right:24px;width:58px;height:58px;
                border-radius:50%;background:var(--whatsapp);z-index:90;
                box-shadow:0 10px 24px rgba(37,211,102,.55);transition:transform .18s,bottom .3s;}
  .whatsapp-fab img{width:32px;height:32px;object-fit:contain;}
  .whatsapp-fab:hover{transform:scale(1.06);}
  .whatsapp-fab.shifted{bottom:calc(var(--banner-h, 70px) + 24px + env(safe-area-inset-bottom));}
  #back-to-top{bottom:calc(94px + env(safe-area-inset-bottom));}
  #back-to-top.banner-up{bottom:calc(var(--banner-h, 130px) + 94px + env(safe-area-inset-bottom));}
}

/* ============================================================
   Cookie 横幅
   ============================================================ */
.cookie-banner{position:fixed;left:0;right:0;bottom:0;z-index:90;
               background:rgba(255,255,255,.98);border-top:1px solid var(--line);
               box-shadow:0 -4px 16px rgba(16,34,43,.08);
               padding-bottom:env(safe-area-inset-bottom);
               transform:translateY(100%);transition:transform .45s ease;}
.cookie-banner.show{transform:translateY(0);}
.cookie-banner-inner{max-width:1280px;margin:0 auto;padding:16px 24px;
                     display:flex;align-items:center;justify-content:space-between;gap:24px;}
.cookie-text{font-size:14px;color:var(--text);line-height:1.7;max-width:720px;}
.cookie-banner-buttons{display:flex;gap:10px;flex-shrink:0;}

/* ============================================================
   Cookie 设置弹窗
   ============================================================ */
.modal-overlay{position:fixed;inset:0;z-index:120;background:rgba(16,34,43,.5);
               display:flex;align-items:center;justify-content:center;padding:20px;}
.modal{background:#fff;border-radius:var(--radius-card);
       box-shadow:0 12px 40px rgba(16,34,43,.18);max-width:520px;width:100%;
       max-height:90vh;max-height:90dvh;overflow-y:auto;}
.modal-header{padding:20px 24px 12px;border-bottom:1px solid var(--line);
              display:flex;justify-content:space-between;align-items:center;gap:12px;}
.modal-header h3{font-size:16px;font-weight:700;color:var(--text);}
.modal-close{width:28px;height:28px;border:1px solid var(--line);border-radius:var(--radius-card);
             display:flex;align-items:center;justify-content:center;
             color:var(--text2);background:#fff;cursor:pointer;transition:.18s;flex-shrink:0;}
.modal-close:hover{color:var(--text);border-color:var(--text);}
.modal-body{padding:18px 24px 22px;}
.cookie-modal-desc{font-size:13px;color:var(--text2);line-height:1.7;margin-bottom:16px;}
.cookie-cat{display:flex;justify-content:space-between;align-items:center;gap:16px;
            border:1px solid var(--line);border-radius:var(--radius-card);
            padding:14px 16px;margin-bottom:12px;}
.cookie-cat-info{min-width:0;}
.cookie-cat-name{font-size:14px;color:var(--text);display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.cookie-always{font-size:11px;color:var(--accent);text-transform:uppercase;letter-spacing:.04em;}
.cookie-cat-info p{font-size:12.5px;color:var(--text2);line-height:1.6;margin-top:5px;}
.modal-footer{padding:14px 24px;border-top:1px solid var(--line);
              background:#F7F9FB;display:flex;justify-content:flex-end;}
.modal-footer .btn{height:38px;padding:0 24px;}

/* ---------------- 404 弹窗（规范§九：极简居中，用户 2026-10-02 选方案 A） ---------------- */
.e404-overlay{position:fixed;inset:0;z-index:120;background:rgba(26,37,47,.45);
              display:flex;align-items:center;justify-content:center;padding:20px;}
/* 独立 404 页（2026-10-16 SEO/GEO 阶段 0：真 404 + 独立页面，替代弹窗方案；倒计时/按钮复用 e404-card 内样式） */
.e404-page{display:flex;align-items:center;justify-content:center;min-height:56vh;padding:72px 20px;}
.e404-card{background:#fff;border-radius:6px;max-width:520px;width:100%;
           padding:52px 64px;text-align:center;}
.e404-num{font-size:104px;font-weight:100;line-height:1;letter-spacing:2px;color:#1A252F;}
.e404-title{font-size:17px;font-weight:600;color:#1A252F;margin-top:16px;}
.e404-desc{font-size:13px;color:#6B7C8D;line-height:1.7;margin-top:10px;}
.e404-btn{display:inline-flex;align-items:center;justify-content:center;height:46px;padding:0 36px;
          background:#1A252F;color:#fff;border-radius:4px;font-weight:600;margin-top:26px;
          text-decoration:none;transition:background .2s;}
.e404-btn:hover{background:#2C3E50;}
.e404-count{font-size:12.5px;color:#6B7C8D;margin-top:16px;}
@media (max-width:760px){
  .e404-card{padding:44px 26px;}
  .e404-num{font-size:96px;}
  .e404-title{font-size:16px;}
  .e404-desc{font-size:12.5px;}
  .e404-btn{width:100%;}
}


/* 开关 */
.switch{position:relative;display:inline-block;width:42px;height:23px;flex-shrink:0;}
.switch input{opacity:0;width:0;height:0;}
.switch-slider{position:absolute;inset:0;background:#D5DEE6;border-radius:23px;transition:.2s;}
.switch-slider::before{content:"";position:absolute;width:17px;height:17px;left:3px;top:3px;
                       background:#fff;border-radius:50%;box-shadow:0 1px 3px rgba(0,0,0,.2);transition:.2s;}
.switch input:checked + .switch-slider{background:var(--primary);}
.switch input:checked + .switch-slider::before{transform:translateX(19px);}
.switch input:disabled + .switch-slider{opacity:.55;}

/* ============================================================
   返回顶部 / Toast
   ============================================================ */
.back-to-top{position:fixed;bottom:calc(24px + env(safe-area-inset-bottom));right:24px;width:44px;height:44px;
             border-radius:50%;background:var(--primary-dark);color:#fff;border:none;
             display:flex;align-items:center;justify-content:center;
             opacity:0;visibility:hidden;transition:opacity .25s,visibility .25s,bottom .3s;z-index:80;
             cursor:pointer;}
.back-to-top.show{opacity:.65;visibility:visible;}
.back-to-top:hover{opacity:1;background:var(--primary-light);}
.back-to-top.banner-up{bottom:calc(var(--banner-h, 130px) + 24px + env(safe-area-inset-bottom));}
.toast{position:fixed;bottom:calc(96px + env(safe-area-inset-bottom));left:50%;transform:translateX(-50%);
       background:var(--primary-dark);color:#fff;font-size:13px;
       padding:10px 22px;border-radius:var(--radius);z-index:140;}

/* ============================================================
   产品列表页（§14「AV1 细线轻抬」定稿）
   ============================================================ */
.products-page{padding-top:40px;padding-bottom:80px;}

/* 面包屑（§8.1 全站组件：12.5px 次级灰、分隔符 ›、hover 节点主色 600 +
   其余节点与分隔符透明度 45%；当前级 600 深蓝灰不可点） */
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;
            font-size:12.5px;color:var(--text2);margin-bottom:34px;}
.breadcrumb a{color:var(--text2);transition:color .15s,opacity .15s,font-weight .15s;}
.crumb-sep{color:var(--text2);opacity:.65;transition:opacity .15s;}
.crumb-current{color:var(--text);font-weight:600;}
.breadcrumb:hover a:not(:hover),.breadcrumb:hover .crumb-sep{opacity:.45;}
.breadcrumb a:hover{color:var(--primary);font-weight:600;opacity:1;}

/* 标题 / 描述 / 细线（§14.2） */
.page-title{font-size:32px;font-weight:700;color:var(--text);line-height:1.25;}
.page-desc{font-size:16px;color:var(--text2);margin-top:12px;max-width:760px;line-height:1.6;}
.page-divider{border:none;border-top:1px solid var(--line);margin:16px 0 26px;}
.page-divider.no-desc{margin-top:28px;}

/* 分类胶囊（§14.4：直角 3px、1px 细边框、白底；hover 边框主色；选中主色实底白字） */
.cat-pills{display:flex;flex-wrap:wrap;gap:12px;}
.pill-spacer{flex:1;}
.pill{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;
      background:#fff;border:1px solid var(--line);border-radius:3px;
      font-size:14px;font-weight:600;color:var(--text);
      transition:background .15s,border-color .15s,color .15s;}
.pill:hover{border-color:var(--primary);}
.pill.active{background:var(--primary);border-color:var(--primary);color:#fff;}
.pill-count{font-size:12px;font-weight:400;color:var(--text2);}
.pill.active .pill-count{color:rgba(255,255,255,.75);}

/* 移动端分类筛选（§14.8：按钮 + 底部抽屉；桌面隐藏） */
.filter-btn-wrap{display:none;}
.filter-drawer{position:fixed;inset:0;z-index:110;}
.filter-backdrop{position:absolute;inset:0;background:rgba(16,34,43,.4);opacity:0;transition:opacity .2s;}
.filter-drawer.open .filter-backdrop{opacity:1;}
.filter-panel{position:absolute;left:0;right:0;bottom:0;background:#fff;
              border-radius:12px 12px 0 0;max-height:75vh;max-height:75dvh;overflow:auto;
              padding:18px 20px calc(30px + env(safe-area-inset-bottom));box-shadow:0 -4px 20px rgba(0,0,0,.12);
              transform:translateY(100%);transition:transform .22s ease;}
.filter-drawer.open .filter-panel{transform:translateY(0);}
.filter-panel-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:10px;
                   border-bottom:1px solid var(--line-soft);margin-bottom:6px;}
.filter-panel-title{font-size:15px;font-weight:700;color:var(--text);}
.filter-close{width:32px;height:32px;display:inline-flex;align-items:center;justify-content:center;
              background:none;border:none;color:var(--text2);cursor:pointer;border-radius:3px;}
.filter-close:hover{background:var(--bg-soft);color:var(--text);}
.filter-list{display:flex;flex-direction:column;}
.filter-opt{display:flex;align-items:center;justify-content:space-between;padding:13px 4px;
            border-bottom:1px solid var(--line-soft);font-size:14px;font-weight:600;color:var(--text);}
.filter-opt:last-child{border-bottom:none;}
.filter-opt.active{color:var(--primary);}
.filter-count{font-size:12px;font-weight:400;color:var(--text2);}

/* 计数行 */
.result-count{font-size:14px;color:var(--text2);margin:24px 0 24px;}

/* 产品网格（§14.5：min 卡宽 200px + gap 26px 自适应列；一页 = 列数×3，JS 分页） */
.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:26px;}
.grid-empty{grid-column:1/-1;font-size:15px;color:var(--text2);padding:20px 0 40px;}

/* 产品卡（§14.6：白底直角 4px 细边框 + 恒定轻阴影；hover 阴影加深 + 边框主色 + 上浮 1px） */
.p-card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
        box-shadow:var(--sh1);overflow:hidden;
        transition:box-shadow .18s,border-color .18s,transform .18s;}
.p-card:hover{box-shadow:var(--sh2);border-color:var(--primary);transform:translateY(-1px);}
.p-card .card-bd{padding:14px 16px 16px;}
.p-card .product-code{font-size:11px;font-weight:600;color:var(--accent);display:block;margin-bottom:6px;letter-spacing:.02em;}
.p-card .product-name{font-size:13.5px;font-weight:600;line-height:1.5;min-height:40.5px;color:var(--text);
                      display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden;}
.p-card .product-brief{font-size:12px;color:var(--text3);line-height:1.55;min-height:37.2px;margin-top:7px;
                       display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden;}
.p-card.hidden{display:none !important;}

/* 分页（§14.5：按钮 36×36、gap 8、当前页主色实底、首末禁用） */
.pager{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:36px;}
.pager-btn{min-width:36px;height:36px;padding:0 10px;background:#fff;border:1px solid var(--line);
           border-radius:3px;font-size:13px;font-weight:600;color:var(--text);cursor:pointer;
           transition:background .15s,border-color .15s,color .15s;}
.pager-btn:hover:not(:disabled){border-color:var(--primary);color:var(--primary);}
.pager-btn:disabled{opacity:.4;cursor:not-allowed;}
.pager-pages{display:flex;align-items:center;gap:8px;}
.pager-num{min-width:36px;height:36px;padding:0 4px;background:#fff;border:1px solid var(--line);
           border-radius:3px;font-size:13px;font-weight:600;color:var(--text);cursor:pointer;
           transition:background .15s,border-color .15s,color .15s;}
.pager-num:hover{background:#F4F7FA;border-color:var(--primary);color:var(--primary);}
.pager-num.active{background:var(--primary);border-color:var(--primary);color:#fff;}
.pager-mobile{font-size:13px;font-weight:600;color:var(--text2);padding:0 6px;white-space:nowrap;}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1200px){
  .card-grid{grid-template-columns:repeat(4,1fr);}
  .why-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:900px){
  .card-grid{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:760px){
  .container{padding-left:24px;padding-right:24px;}
  .site-header{height:60px;}
  .header-inner{padding:0 24px;gap:10px;display:flex;grid-template-columns:none;}
  .header-logo img{max-height:28px;max-width:130px;}
  .main-nav{display:none;}
  .header-actions{gap:8px;margin-left:auto;}
  .header-quote{display:none;}
  .lang-current{height:36px;padding:0 10px;font-size:13px;display:inline-flex;align-items:center;}
  .cart-link{width:36px;height:36px;}
  .hamburger{display:flex;flex-direction:column;justify-content:center;align-items:flex-end;
             gap:4px;width:36px;height:36px;background:none;border:none;cursor:pointer;}
  .hamburger span{display:block;width:19px;height:2px;background:var(--text);border-radius:1px;}

  .hero{padding:36px 0 48px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-rt{display:none;}
  .hero-badge-icon{display:none;}
  .hero h1{font-size:clamp(24px,6vw,32px);}
  /* hero 双按钮移动端：上下排、等宽 260px、左对齐留白（6 语言宽度一致，不顶满） */
  .hero-btns{flex-direction:column;align-items:flex-start;gap:12px;width:fit-content;max-width:100%;}
  .hero-btns .btn{width:260px;max-width:100%;min-height:48px;padding:13px 20px;}
  .hero-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:20px 16px;}
  .home-section{padding:48px 0;}
  .sec-head{margin-bottom:30px;}
  .sec-head h2{font-size:27px;}
  .sec-head p{font-size:15px;}

  .card-grid{grid-template-columns:repeat(2,1fr);gap:14px;}
  .why-grid{grid-template-columns:repeat(2,1fr);gap:14px;}
  .why-card{padding:22px 18px;}

  .kb-card{flex-direction:column;gap:0;}
  .kb-im{flex:none;width:100%;aspect-ratio:16/9;}
  .kb-im.ratio-169{aspect-ratio:16/9;}
  .kb-bd{padding:18px;}

  .trust-inner{flex-direction:column;padding:14px 0;gap:0;}
  .trust-seg{border-right:none;padding:10px 0;border-bottom:1px solid #F0F3F6;}
  .trust-seg:last-child{border-bottom:none;}
  .trust-t,.trust-s{white-space:normal;}

  .footer-grid{grid-template-columns:1fr;gap:36px;padding:44px 24px 0;}
  .footer-links{text-align:left;}
  .footer-links nav{align-items:flex-start;}
  .footer-contact,.footer-contact .footer-title{text-align:left;}
  .contact-lines{align-items:flex-start;}
  .contact-lines p{text-align:left;}
  .footer-qr{display:none;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;padding:20px 24px;}
  .footer-legal{gap:16px;}
  .back-to-top{right:24px;}

  /* iOS 字体渲染更宽：关键文本元素防溢出兜底 */
  h1,h2,h3,h4,h5,h6,p,a,span,label,button,td,li,input,textarea,select{overflow-wrap:break-word;word-break:break-word;}

  .cookie-banner-inner{flex-direction:column;align-items:stretch;gap:12px;padding:14px 16px;}
  .cookie-text{font-size:13px;max-width:none;}
  .cookie-banner-buttons{justify-content:space-between;}
  .cookie-banner-buttons .btn{flex:1;height:38px;}

  /* 产品列表页移动端（§14.7/§14.8：2 列固定、卡紧凑、三件套分页不换行、无 brief、
     分类筛选 = 按钮 + 底部抽屉） */
  .products-page{padding-top:24px;padding-bottom:80px;}
  .breadcrumb{margin-bottom:14px;gap:6px;font-size:12.5px;}
  .page-title{font-size:26px;}
  .page-desc{font-size:15px;margin-top:8px;}
  .page-divider{margin:6px 0 18px;}
  .page-divider.no-desc{margin-top:14px;}
  .cat-pills{display:none;}
  .filter-btn-wrap{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
  .filter-btn{display:flex;align-items:center;justify-content:space-between;flex:1;min-width:0;
              padding:11px 14px;background:#fff;border:1px solid var(--line);border-radius:3px;
              font-size:14px;font-weight:600;color:var(--text);cursor:pointer;}
  .filter-spacer{flex:1;}
  .filter-caret{display:inline-flex;color:var(--text2);}
  .result-count{margin:0 0 12px;font-size:13px;}
  .product-grid{grid-template-columns:repeat(2,1fr);gap:12px;}
  .p-card .product-code{margin-bottom:4px;}
  .p-card .product-name{font-size:13px;min-height:33.35px;}
  .p-card .product-brief{display:none;}
  .pager{margin-top:26px;}
}

/* ============================================================
   §20 产品详情页（桌面定稿 + §20.13 移动方案 B）
   ============================================================ */
.pd-page{max-width:1120px;padding-top:26px;padding-bottom:64px;}
.pd-main{display:flex;gap:52px;align-items:flex-start;margin-top:0;}
.pd-gallery{flex:1.05;min-width:0;}
.pd-info{flex:1;min-width:0;}

/* ---- 主屏 / 缩略图（§20.4） ---- */
.pd-stage{position:relative;border:1px solid var(--line);border-radius:6px;background:#F7F9FB;overflow:hidden;}
.pd-media{position:relative;aspect-ratio:16/9;width:100%;display:none;align-items:center;justify-content:center;background:#F7F9FB;}
.pd-media.active{display:flex;}
.pd-media.pd-empty{color:#C8D0D9;}
.pd-img{width:100%;height:100%;object-fit:cover;display:block;}
.pd-video-el{width:100%;height:100%;object-fit:contain;display:block;background:#000;}
.pd-video-tag{position:absolute;top:10px;left:10px;z-index:3;font-size:11px;font-weight:700;letter-spacing:.5px;
  color:#fff;background:rgba(16,34,43,.42);padding:3px 8px;border-radius:3px;}
.pd-play{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);z-index:4;width:58px;height:58px;
  border:none;border-radius:50%;background:rgba(16,34,43,.42);color:#fff;display:flex;align-items:center;
  justify-content:center;cursor:pointer;transition:background .2s;}
.pd-play:hover{background:rgba(16,34,43,.62);}
.pd-video.playing .pd-play{opacity:0;pointer-events:none;}
/* 视频控制条：默认 0.35 → hover 1.0（§20.4） */
.pd-vctrl{position:absolute;left:0;right:0;bottom:0;z-index:5;display:flex;align-items:center;gap:8px;
  padding:8px 10px;background:linear-gradient(transparent,rgba(16,34,43,.55));opacity:.35;transition:opacity .25s;}
.pd-video:hover .pd-vctrl,.pd-video.playing .pd-vctrl{opacity:1;}
.pd-vctrl button{background:none;border:none;color:#fff;width:26px;height:26px;display:flex;align-items:center;
  justify-content:center;cursor:pointer;padding:0;}
.vc-range{flex:1;min-width:40px;height:3px;appearance:none;-webkit-appearance:none;background:rgba(255,255,255,.45);
  border-radius:2px;outline:none;cursor:pointer;}
.vc-range::-webkit-slider-thumb{appearance:none;-webkit-appearance:none;width:11px;height:11px;border-radius:50%;
  background:#fff;border:none;cursor:pointer;}
.vc-range::-moz-range-thumb{width:11px;height:11px;border-radius:50%;background:#fff;border:none;cursor:pointer;}
.vc-time{color:#fff;font-size:11px;font-variant-numeric:tabular-nums;white-space:nowrap;}

/* ---- 缩略图行（§20.4） ---- */
.pd-thumbs{display:flex;gap:10px;margin-top:12px;overflow-x:auto;padding-bottom:4px;scroll-snap-type:x mandatory;touch-action:pan-x;/* pan-x：只声明横向滚动手势，点击缩略图不被误判为滚动 */}
.pd-thumbs::-webkit-scrollbar{height:6px;}
.pd-thumbs::-webkit-scrollbar-track{background:transparent;}
.pd-thumbs::-webkit-scrollbar-thumb{background:#C8D0D9;border-radius:3px;}
.pd-thumb{position:relative;flex-shrink:0;width:74px;height:52px;border:1px solid var(--line);border-radius:4px;
  overflow:hidden;padding:0;cursor:pointer;background:#F7F9FB;scroll-snap-align:center;}
.pd-thumb img{width:100%;height:100%;object-fit:cover;display:block;}
.pd-thumb-ph{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:#C8D0D9;}
.pd-thumb-video{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:rgba(16,34,43,.42);color:#fff;z-index:2;}
.pd-thumb.active{border-color:var(--badge-blue);border-width:1px;}
.pd-dots{display:none;}

/* ---- 产品简介（§20.5） ---- */
.pd-brief{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);}
.pd-brief h3{font-size:12px;font-weight:700;color:#1A252F;text-transform:uppercase;letter-spacing:.7px;margin:0 0 8px;}
.pd-brief p{font-size:13.5px;color:var(--text);line-height:1.8;margin:0;}

/* ---- 亮点（§20.6） ---- */
.pd-hl{list-style:none;margin:14px 0 0;padding:0;display:flex;flex-direction:column;gap:6px;}
.pd-hl li{display:flex;align-items:flex-start;gap:8px;font-size:13.5px;line-height:1.6;color:var(--text);}
.hl-ic{flex-shrink:0;width:18px;height:18px;border-radius:50%;background:rgba(47,111,176,.12);
  display:flex;align-items:center;justify-content:center;color:#2F6FB0;margin-top:2px;}

/* ---- 右栏信息区（§20.7） ---- */
.pd-name{font-size:26px;font-weight:700;color:#1A252F;line-height:1.3;margin:0;}
.pd-code{font-size:13px;color:#6B7C8D;letter-spacing:.4px;margin-top:8px;}
.pd-actions{display:flex;gap:14px;margin-top:24px;}
.pd-addcart{height:48px;padding:0 24px;border:1.5px solid var(--primary);border-radius:4px;background:#fff;
  color:var(--primary);font-size:14px;font-weight:600;cursor:pointer;transition:all .18s;}
.pd-addcart:hover{background:var(--primary);color:#fff;}
.pd-addcart.added{border-color:#2F6FB0;color:#2F6FB0;background:rgba(47,111,176,.08);}
.pd-quote{height:48px;padding:0 28px;border-radius:4px;background:var(--primary);color:#fff;
  font-size:14px;font-weight:600;display:inline-flex;align-items:center;justify-content:center;
  text-decoration:none;transition:background .18s;}
.pd-quote:hover{background:var(--primary-dark);color:#fff;}

/* ---- 参数区（§20.8：行式列表） ---- */
.pd-specs{margin-top:34px;}
.pd-specs h3{font-size:12px;font-weight:700;color:#1A252F;text-transform:uppercase;letter-spacing:.7px;margin:0 0 12px;}
.pd-specs h3 + .spec-rows{margin-top:12px;}
.pd-specs h3:not(:first-child){margin-top:30px;}
.spec-rows{display:flex;flex-direction:column;}
.spec-row{display:flex;align-items:center;gap:12px;padding:11px 0;border-bottom:1px solid #EEF1F5;font-size:13.5px;}
.spec-ic{flex-shrink:0;width:22px;height:22px;display:flex;align-items:center;justify-content:center;color:#6B7C8D;}
.spec-label{flex-shrink:0;width:140px;color:#6B7C8D;}
.spec-value{font-weight:600;color:var(--text);}

/* ---- FAQ（§20.9：全宽左右顶齐） ---- */
.pd-faq{margin-top:52px;max-width:1120px;}
.pd-faq h2{font-size:17px;font-weight:700;color:#1A252F;margin:0 0 14px;}
.faq-list{display:flex;flex-direction:column;gap:10px;}
.faq-item{border:1px solid var(--line);border-radius:6px;overflow:hidden;background:#fff;}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:15px 18px;
  background:none;border:none;font-size:14px;font-weight:600;color:var(--text);cursor:pointer;text-align:left;}
.faq-arrow{color:#6B7C8D;font-size:16px;transition:transform .2s;flex-shrink:0;}
.faq-item.open .faq-arrow{transform:rotate(90deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;}
.faq-a-in{padding:0 18px 15px;font-size:13.5px;color:#6B7C8D;line-height:1.75;}

/* ---- 相关产品（§20.10） ---- */
.pd-related{margin-top:52px;}
.pd-related h2{font-size:17px;font-weight:700;color:#1A252F;margin:0 0 16px;}
.pd-related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.pd-related .p-card{border-radius:var(--radius-card);overflow:hidden;}
.pd-related .p-card-img{aspect-ratio:16/9;overflow:hidden;position:relative;background:#F7F9FB;}
.pd-related .p-card-img img{width:100%;height:100%;object-fit:cover;display:block;}
.pd-related .p-card-body{padding:12px 14px 14px;}
.pd-related .product-name{font-size:13.5px;font-weight:600;line-height:1.4;min-height:38px;color:#1A252F;}
.pd-related .product-code{font-size:11.5px;font-weight:600;color:#6B7C8D;letter-spacing:.3px;margin-top:5px;display:block;}

/* ---- 灯箱（§8.4） ---- */
.lightbox{position:fixed;inset:0;z-index:1000;background:rgba(16,34,43,.72);display:flex;align-items:center;
  justify-content:center;padding:5vh 6vw;}
.lightbox[hidden]{display:none;}
.lb-body{max-width:92vw;max-height:88vh;max-height:88dvh;display:flex;align-items:center;justify-content:center;}
.lb-body img{max-width:92vw;max-height:88vh;max-height:88dvh;object-fit:contain;display:block;}
.lb-body video{max-width:92vw;max-height:88vh;max-height:88dvh;display:block;background:#000;}
.lb-close,.lb-prev,.lb-next{position:absolute;z-index:1001;background:none;border:none;color:#fff;
  display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:.55;transition:opacity .15s;}
.lb-close:hover,.lb-prev:hover,.lb-next:hover{opacity:1;}
.lb-close{top:20px;right:24px;width:44px;height:44px;}
.lb-prev{left:20px;top:50%;transform:translateY(-50%);width:48px;height:48px;}
.lb-next{right:20px;top:50%;transform:translateY(-50%);width:48px;height:48px;}
.lb-body video::-webkit-media-controls{opacity:1;}

/* ---- 移动底部操作条（§20.13 方案 B） ---- */
.pd-mobile-bar{display:none;}

@media (max-width:760px){
  /* 页面自身留白收紧 */
  .pd-page{padding-top:24px;padding-bottom:84px;}

  /* 主图区：横滑 + 主图下方单行横滑缩略图（§20.13 方案 A 定稿，指示点移除） */
  .pd-stage{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;border:none;border-radius:0;background:#fff;}
  .pd-media{display:flex;flex-shrink:0;width:100%;scroll-snap-align:start;}
  .pd-thumbs{display:flex;gap:8px;margin:12px 0 0;scrollbar-width:none;}
  .pd-thumbs::-webkit-scrollbar{display:none;}
  .pd-thumb{width:64px;height:48px;border:2px solid transparent;border-radius:5px;}
  .pd-thumb.active{border-color:#2F6FB0;}
  .pd-dots{display:none;}

  /* 信息区顺序（§20.13）：名称 → 编号 → 简介 → 亮点 → 参数 → FAQ → 相关 */
  .pd-main{flex-direction:column;gap:0;margin-top:0;}
  .pd-gallery{padding:0;}
  .pd-info{padding:0 16px;margin-top:16px;}
  .pd-name{font-size:22px;}
  .pd-code{font-size:12px;margin-top:6px;}
  .pd-actions{display:none;}            /* 桌面按钮移动隐藏（用底部操作条） */
  .pd-brief{margin-top:16px;padding-top:14px;}
  .pd-brief h3{font-size:11px;}
  .pd-brief p{font-size:13px;line-height:1.75;}
  .pd-hl{margin-top:12px;gap:5px;}
  .pd-hl li{font-size:13px;line-height:1.55;gap:7px;}
  .hl-ic{width:17px;height:17px;}
  .pd-specs{margin-top:26px;}
  .pd-specs h3{font-size:11px;margin-bottom:10px;}
  .pd-specs h3 + .spec-rows{margin-top:2px;}
  .pd-specs h3:not(:first-child){margin-top:24px;}
  .spec-row{padding:10px 0;font-size:12.5px;gap:10px;}
  .spec-ic{width:20px;height:20px;}
  .spec-ic svg{width:17px;height:17px;}
  .spec-label{width:120px;font-size:12.5px;}

  .pd-faq{margin-top:36px;padding:0 16px;}
  .pd-faq h2{font-size:16px;}
  .faq-q{font-size:13.5px;padding:14px 16px;}
  .faq-a-in{font-size:13px;line-height:1.7;padding:0 16px 13px;}

  .pd-related{margin-top:36px;padding:0 0 20px;}
  .pd-related h2{font-size:16px;}
  .pd-related-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;}
  .pd-related .product-name{font-size:13px;min-height:36px;}
  .pd-related .product-code{font-size:11px;}

  /* 底部固定操作条（§20.13）：滚动到 Footer 时自动隐藏，避免遮挡 Cookie settings / Privacy / Terms */
  .pd-mobile-bar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:900;
    padding:12px 16px;padding-bottom:calc(12px + env(safe-area-inset-bottom));background:#fff;border-top:1px solid var(--line);gap:10px;
    transform:translateY(0);transition:transform .3s ease;}
  .pd-mobile-bar.hide{transform:translateY(110%);}
  .pd-mobile-bar .pd-addcart,.pd-mobile-bar .pd-quote{flex:1;height:46px;font-size:13.5px;
    justify-content:center;text-align:center;display:inline-flex;align-items:center;padding:0 10px;}

  /* 产品页（有操作条）时返回顶部按钮上移避开 */
  body.has-mobile-bar #back-to-top{bottom:calc(94px + env(safe-area-inset-bottom));}

  /* toast 上移避开操作条 */
  .toast{bottom:calc(96px + env(safe-area-inset-bottom));}
}
/* ============================================================
   知识库页（§12）：列表 / 分类 / 文章详情 / FAQ
   ============================================================ */

/* ---- 面包屑行 + 返回按钮（§12.6） ---- */
.kb-head-row{display:flex;align-items:center;justify-content:space-between;gap:16px;
             margin:0 0 34px;flex-wrap:wrap;}
.kb-head-row .breadcrumb{margin:0;}
.kb-back{flex-shrink:0;font-size:13px;font-weight:600;color:var(--accent);
         padding:7px 14px;border:1px solid var(--line);border-radius:var(--radius);
         transition:border-color .15s,color .15s;}
.kb-back:hover{border-color:var(--accent);color:var(--accent-dark);}

/* ---- 分类导航网格（§12.4：列数 JS 实时算 = 容器宽 ÷ 150px） ---- */
.kb-nav{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));
        gap:14px;margin-top:26px;max-height:none;overflow:hidden;}
.kb-nav-card{position:relative;display:flex;flex-direction:column;align-items:flex-start;gap:10px;
             min-height:118px;padding:14px;background:var(--white);
             border:1px solid var(--line);border-radius:var(--radius-card);
             transition:border-color .15s,box-shadow .15s,transform .15s;}
.kb-nav-card:hover{transform:translateY(-1px);box-shadow:var(--sh1);border-color:var(--accent);}
.kb-nav-all{border-style:dashed;background:var(--bg-soft);color:var(--text);}
.kb-nav-all svg{color:var(--accent);}
.kb-nav-faq{border-style:dashed;border-color:var(--badge-blue);background:#F4F8FC;color:var(--text);}
.kb-nav-faq svg{color:var(--badge-blue);}
.kb-nav-empty{background:var(--bg-soft);color:var(--text3);cursor:not-allowed;pointer-events:none;}
.kb-nav-name{font-size:14px;font-weight:600;color:var(--text);line-height:1.4;}
.kb-nav-empty .kb-nav-name{color:var(--text3);}
.kb-nav-count{font-size:12px;color:var(--text2);}
.kb-nav-empty .kb-nav-count{color:var(--text3);}
.kb-cover-block{width:100%;aspect-ratio:16/7;border-radius:3px;overflow:hidden;
                display:flex;align-items:center;justify-content:center;}
.kb-cover-block span{font-size:26px;font-weight:700;color:rgba(255,255,255,.92);}
.kb-cover-img{width:100%;aspect-ratio:16/7;border-radius:3px;overflow:hidden;position:relative;
              background:var(--bg-soft);}
.kb-cover-img img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;}
.kb-nav-more{margin:18px auto 0;display:block;font-size:13px;font-weight:600;color:var(--accent);
             background:none;border:none;cursor:pointer;padding:8px 16px;}
.kb-nav-more:hover{color:var(--accent-dark);text-decoration:underline;}

/* ---- 工具栏：计数 + 排序（§12.5） ---- */
.kb-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;
            margin:30px 0 22px;flex-wrap:wrap;}
.kb-toolbar .result-count{margin:0;}
.kb-sort{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text2);}
.kb-sort select{font-family:inherit;font-size:13px;color:var(--text);
                padding:7px 30px 7px 12px;border:1px solid var(--line);border-radius:var(--radius);
                background:var(--white);cursor:pointer;appearance:none;
                background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' width='12' height='12' fill='none' stroke='%236B7C8D' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
                background-repeat:no-repeat;background-position:right 10px center;}
.kb-sort select:hover{border-color:var(--accent);}

/* ---- 文章卡片网格（§12.5：每页 12） ---- */
.kb-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.a-card{display:flex;flex-direction:column;background:var(--white);
        border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
        transition:border-color .15s,box-shadow .18s,transform .18s;}
.a-card:hover{transform:translateY(-1px);box-shadow:var(--sh2);border-color:var(--accent);}
.a-card .card-bd{display:flex;flex-direction:column;gap:8px;padding:14px 16px 16px;min-width:0;}
.a-cat{font-size:11px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--accent);}
.a-title{font-size:15.5px;font-weight:700;color:var(--text);line-height:1.45;
         display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.a-excerpt{font-size:13px;color:var(--text2);line-height:1.6;
           display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.a-meta{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text3);margin-top:2px;}
.a-dot{color:var(--text3);}

/* ---- 分页（§12.5：服务端每页 12） ---- */
.kb-pager{display:flex;align-items:center;justify-content:center;gap:14px;margin:36px 0 10px;}
.kb-pager .pager-btn{display:inline-flex;align-items:center;min-width:36px;height:36px;padding:0 14px;
                     background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
                     font-size:13px;color:var(--text);cursor:pointer;
                     transition:border-color .15s,color .15s;}
.kb-pager .pager-btn:hover{border-color:var(--accent);color:var(--accent);}
.kb-pager .pager-btn.is-disabled{opacity:.4;cursor:not-allowed;}
.pager-pages{display:flex;gap:6px;}
.pager-num{min-width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;
           border:1px solid var(--line);border-radius:var(--radius);font-size:13px;color:var(--text);
           transition:border-color .15s,color .15s,background .15s;}
.pager-num:hover{border-color:var(--accent);color:var(--accent);}
.pager-num.active{background:var(--primary);border-color:var(--primary);color:var(--white);}

/* ---- 文章详情（§12.6-12.7） ---- */
.article-page{padding-top:6px;padding-bottom:72px;}
.article-body{max-width:var(--col);margin:0 auto;}
.article-title{font-size:30px;font-weight:700;color:var(--text);line-height:1.3;margin:0 0 12px;}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:6px;
              font-size:13px;color:var(--text2);margin-bottom:24px;}
.article-cover{margin-bottom:28px;border-radius:var(--radius-card);overflow:hidden;position:relative;
               aspect-ratio:16/8;background:var(--bg-soft);}
.article-cover .kb-cover-img{aspect-ratio:16/8;}
.article-content{font-size:15px;color:var(--text);line-height:1.85;}
.article-content h2{font-size:21px;font-weight:700;color:var(--text);margin:34px 0 12px;line-height:1.4;}
.article-content h3{font-size:17px;font-weight:700;color:var(--text);margin:26px 0 10px;line-height:1.4;}
.article-content p{margin:0 0 16px;}
.article-content strong{font-weight:700;color:var(--text);}
.article-content ul,.article-content ol{margin:0 0 16px;padding-left:22px;}
.article-content li{margin-bottom:6px;}
.article-content a{color:var(--accent);text-decoration:underline;}
.article-content table{border-collapse:collapse;width:100%;margin:0 0 16px;font-size:13.5px;}
.article-content th,.article-content td{border:1px solid var(--line);padding:8px 10px;text-align:left;}
.article-content th{background:var(--bg-soft);font-weight:600;}
.article-content img{border-radius:var(--radius-card);margin:6px 0 16px;}

/* ---- 文章页区块标题 / FAQ / 相关 / 其他 ---- */
.section-title{font-size:17px;font-weight:700;color:var(--text);margin:0 0 16px;}
.article-faqs,.article-related,.article-more{margin-top:52px;max-width:var(--col);margin-left:auto;margin-right:auto;}
.article-faqs .faq-acc{display:flex;flex-direction:column;gap:10px;}
.faq-chev{color:var(--text2);flex-shrink:0;transition:transform .2s;}
.faq-item.open .faq-chev{transform:rotate(180deg);}
.related-grid-4{grid-template-columns:repeat(4,1fr);}

/* ---- 文章页四区块统一 900px 对齐 + 精细断点（2026-10-14） ---- */
.article-page .kb-head-row{max-width:var(--col);margin-left:auto;margin-right:auto;}
@media (max-width:900px){
  .related-grid-4{grid-template-columns:repeat(2,1fr);gap:12px;}
  .article-more .kb-grid{grid-template-columns:repeat(2,1fr);gap:14px;}
}
@media (max-width:560px){
  .article-more .kb-grid{grid-template-columns:1fr;gap:12px;}
}

/* ---- FAQ 页（§12.10） ---- */
.faq-page{padding-top:6px;padding-bottom:72px;}
.faq-search{position:relative;max-width:520px;margin:24px 0 18px;}
.faq-search svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--text3);}
.faq-search input{width:100%;font-family:inherit;font-size:14px;color:var(--text);
                  padding:11px 16px 11px 42px;border:1px solid var(--line);border-radius:var(--radius);
                  background:var(--white);outline:none;transition:border-color .15s,box-shadow .15s;}
.faq-search input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(91,141,184,.15);}
.faq-pills{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px;}
.faq-pills .pill{cursor:pointer;}
.faq-acc-full{display:flex;flex-direction:column;gap:10px;max-width:900px;}
.faq-acc-full .faq-a-in p{font-size:13.5px;color:var(--text2);line-height:1.75;margin:0;}
.faq-empty{font-size:14px;color:var(--text2);padding:20px 0;}

/* ---- 移动端（≤760px） ---- */
@media (max-width:760px){
  .container{padding-left:24px;padding-right:24px;}
  .kb-nav{gap:10px;}
  .kb-nav-card{min-height:104px;padding:12px;}
  .kb-cover-block span{font-size:22px;}
  .kb-grid{grid-template-columns:1fr;gap:14px;}
  .kb-head-row{margin-top:18px;}
  .kb-back{padding:6px 12px;font-size:12px;}
  .article-title{font-size:22px;}
  .kb-head-row{margin:0 0 14px;}
  .article-content h2{font-size:18px;margin-top:26px;}
  .article-content h3{font-size:16px;}
  .article-faqs,.article-related,.article-more{margin-top:40px;}
  .article-page{padding-top:24px;padding-bottom:48px;}
  .related-grid-4{grid-template-columns:repeat(2,1fr);gap:12px;}
  .faq-search{margin-top:18px;}
  .faq-page{padding-top:24px;padding-bottom:48px;}
  .kb-pager{flex-wrap:wrap;gap:10px;}
}

/* ============================================================
   Knowledge 三布局（§12 2026-10-04 定稿：A 杂志主推 / B 阅读长廊 / C 分类主题墙）
   后台 setting knowledge_layout 切换（A/B/C，默认 A）。
   设计语言：图片仅作背景氛围（深色渐变压底、白字压图），不承载信息；
   6 语言适配：德语长词防溢出（overflow-wrap/word-break + line-clamp + min-width:0）。
   ============================================================ */
.knowledge-page{padding-bottom:72px;}
.kb-pills-row{display:flex;flex-wrap:wrap;align-items:flex-start;gap:8px;margin-bottom:18px;}
.kb-pills{display:flex;flex-wrap:wrap;gap:8px;}
.kb-pill{display:inline-flex;align-items:center;gap:5px;border:1px solid var(--line);background:var(--bg-soft);
         border-radius:20px;padding:7px 15px;font-size:13px;color:var(--text);font-weight:500;
         transition:all .15s;cursor:pointer;min-width:0;overflow-wrap:anywhere;word-break:break-word;line-height:1.4;}
.kb-pill b{font-weight:600;overflow-wrap:anywhere;word-break:break-word;}
.kb-pill small{color:var(--text3);font-weight:400;margin-left:2px;}
.kb-pill:hover{border-color:var(--accent);}
.kb-pill.on{background:var(--primary);border-color:var(--primary);color:#fff;}
.kb-pill.on small{color:#B9C6D2;}
.kb-pill.more{color:var(--accent);border-color:#B8D3E8;background:#F2F8FD;font-weight:600;white-space:nowrap;}
@media (min-width:761px){.kb-more-btn{display:none;}}  /* 桌面端胶囊全显示，无需"查看全部"按钮 */

/* ---- 布局 A：杂志主推 ---- */
.kb-la-hero{position:relative;border-radius:14px;overflow:hidden;min-height:340px;
            background-color:var(--primary-dark);background-size:cover;background-position:center;
            display:flex;align-items:flex-end;padding:28px;color:#fff;margin-bottom:24px;}
.kb-la-hero .kb-hcat{display:inline-block;font-size:11px;font-weight:700;letter-spacing:1px;
                     text-transform:uppercase;background:rgba(255,255,255,.16);
                     border:1px solid rgba(255,255,255,.38);padding:4px 11px;border-radius:14px;margin-bottom:12px;
                     overflow-wrap:anywhere;word-break:break-word;}
.kb-la-hero h3{font-size:26px;font-weight:700;line-height:1.3;max-width:760px;margin-bottom:8px;
               overflow-wrap:anywhere;word-break:break-word;}
.kb-la-hero p{font-size:14px;color:rgba(255,255,255,.88);max-width:640px;
              display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
              margin-bottom:10px;overflow-wrap:anywhere;word-break:break-word;}
.kb-la-hero .kb-hmeta{font-size:12px;color:rgba(255,255,255,.8);}
.kb-sec-label{font-size:12px;font-weight:700;color:var(--text3);letter-spacing:1px;text-transform:uppercase;
              margin:22px 0 12px;overflow-wrap:anywhere;word-break:break-word;}
.kb-la-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.kb-la-card{position:relative;border-radius:12px;overflow:hidden;background-color:var(--primary);
            background-size:cover;background-position:center;display:flex;flex-direction:column;
            justify-content:flex-end;padding:16px;color:#fff;min-height:230px;min-width:0;
            transition:transform .15s,box-shadow .15s;}
.kb-la-card:hover{transform:translateY(-3px);box-shadow:0 8px 20px rgba(16,34,43,.25);}
.kb-la-card .kb-tcat{display:inline-block;align-self:flex-start;font-size:10px;font-weight:700;
                     letter-spacing:.8px;text-transform:uppercase;background:rgba(255,255,255,.16);
                     border:1px solid rgba(255,255,255,.35);padding:3px 9px;border-radius:12px;margin-bottom:10px;
                     overflow-wrap:anywhere;word-break:break-word;max-width:100%;}
.kb-la-card .kb-ttitle{font-size:16px;font-weight:700;line-height:1.35;
                       display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
                       overflow-wrap:anywhere;word-break:break-word;}
.kb-la-card .kb-tmeta{display:flex;flex-wrap:wrap;gap:12px;font-size:11px;color:rgba(255,255,255,.82);margin-top:8px;}

/* ---- 布局 B：阅读长廊 ---- */
.kb-lb-feed{display:flex;flex-direction:column;gap:16px;}
.kb-lb-card{display:flex;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;
            transition:box-shadow .15s;min-height:190px;min-width:0;}
.kb-lb-card:hover{box-shadow:0 6px 18px rgba(16,34,43,.14);}
.kb-lb-pic{width:42%;flex-shrink:0;position:relative;background-color:var(--primary-dark);
           background-size:cover;background-position:center;min-height:190px;}
.kb-lb-pic::after{content:'';position:absolute;inset:0;
                  background:linear-gradient(90deg,rgba(255,255,255,0) 40%,#fff 100%);}
.kb-lb-cat{position:absolute;top:14px;left:14px;z-index:2;font-size:10px;font-weight:700;
           letter-spacing:.8px;text-transform:uppercase;background:var(--primary);color:#fff;
           padding:4px 10px;border-radius:12px;overflow-wrap:anywhere;word-break:break-word;max-width:calc(100% - 28px);}
.kb-lb-body{position:relative;z-index:1;margin-left:-46px;background:transparent;
            padding:20px 24px 20px 46px;display:flex;flex-direction:column;gap:8px;
            justify-content:center;min-width:0;flex:1;}
.kb-lb-title{font-size:19px;font-weight:700;line-height:1.4;color:var(--text);
             display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
             overflow-wrap:anywhere;word-break:break-word;}
.kb-lb-excerpt{font-size:13px;color:var(--text2);display:-webkit-box;-webkit-line-clamp:2;
               -webkit-box-orient:vertical;overflow:hidden;overflow-wrap:anywhere;word-break:break-word;}
.kb-lb-meta{font-size:12px;color:var(--text3);display:flex;flex-wrap:wrap;gap:14px;margin-top:2px;}

/* ---- 布局 C：分类主题墙 ---- */
.kb-lc-ctx{display:flex;align-items:center;gap:12px;margin-bottom:18px;flex-wrap:wrap;}
.kb-lc-back{flex-shrink:0;border:1px solid var(--line);background:#fff;border-radius:6px;
            padding:7px 14px;font-size:13px;color:var(--text);font-weight:600;}
.kb-lc-back:hover{border-color:var(--accent);color:var(--accent-dark);}
.kb-lc-ctitle{font-size:18px;font-weight:700;color:var(--text);
              overflow-wrap:anywhere;word-break:break-word;min-width:0;}
.kb-lc-wall{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;}
.kb-lc-cat{position:relative;border-radius:12px;overflow:hidden;background-color:var(--primary);
           background-size:cover;background-position:center;min-height:150px;display:flex;
           align-items:flex-end;padding:14px;color:#fff;min-width:0;
           transition:transform .15s,box-shadow .15s;}
.kb-lc-cat:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(16,34,43,.2);}
.kb-lc-cat .kb-cname{font-size:15px;font-weight:700;line-height:1.3;
                     overflow-wrap:anywhere;word-break:break-word;}
.kb-lc-cat .kb-cdesc{font-size:11px;color:rgba(255,255,255,.82);display:-webkit-box;-webkit-line-clamp:1;
                     -webkit-box-orient:vertical;overflow:hidden;margin-top:3px;
                     overflow-wrap:anywhere;word-break:break-word;}
.kb-lc-cat .kb-ccnt{position:absolute;top:10px;right:10px;font-size:10px;font-weight:700;
                    background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.3);
                    padding:2px 8px;border-radius:10px;}
.kb-lc-cat.soon{background:var(--bg-soft);border:1px dashed var(--line);color:var(--text3);
                display:flex;flex-direction:column;justify-content:flex-end;min-height:150px;cursor:default;}
.kb-lc-cat.soon:hover{transform:none;box-shadow:none;}
.kb-lc-cat.soon .kb-cname{color:var(--text3);}
.kb-lc-cat.soon .kb-soon-tag{font-size:10px;font-weight:700;letter-spacing:.8px;text-transform:uppercase;
                             color:var(--accent);margin-bottom:4px;}

/* ---- 三布局移动端（≤760px，全站布局断点） ---- */
@media (max-width:760px){
  .knowledge-page{padding-top:24px;padding-bottom:48px;}
  .kb-pills{max-height:76px;overflow:hidden;}  /* 首帧即 2 排收起（胶囊行高固定 34px，2 排=76px）；不依赖 JS，杜绝加载闪烁 */
  .kb-pills.expanded{max-height:none;overflow:visible;}
  .kb-la-hero{min-height:250px;padding:20px;}
  .kb-la-hero h3{font-size:21px;}
  .kb-la-grid{grid-template-columns:1fr;gap:14px;}
  .kb-la-card{min-height:200px;}
  .kb-lb-card{flex-direction:column;position:relative;}
  .kb-lb-pic{width:100%;min-height:240px;}
  .kb-lb-pic::after{background:linear-gradient(180deg,rgba(16,34,43,.06) 25%,rgba(16,34,43,.60) 60%,rgba(16,34,43,.95) 100%);}
  .kb-lb-cat{top:12px;left:12px;}
  .kb-lb-body{position:absolute;left:0;right:0;bottom:0;z-index:1;margin-left:0;
              padding:16px 18px;background:transparent;}
  .kb-lb-title{color:#fff;font-size:18px;}
  .kb-lb-excerpt{color:rgba(255,255,255,.9);}
  .kb-lb-meta{color:rgba(255,255,255,.78);}
  .kb-lc-wall{grid-template-columns:repeat(2,1fr);gap:12px;}
  .kb-lc-ctx{margin-bottom:14px;}
}

/* ============ 询价页（§9，2026-10-04 落地） ============ */
.inquiry-page{padding-bottom:88px;}
.inquiry-page .page-title{margin-bottom:6px;}
.inquiry-layout{display:grid;grid-template-columns:55% 45%;gap:36px;align-items:start;margin-top:28px;}
.inquiry-left{display:flex;flex-direction:column;gap:24px;min-width:0;}
.inquiry-right{display:flex;flex-direction:column;min-width:0;}
.inqu-section-title{font-size:17px;font-weight:700;color:var(--text);margin-bottom:14px;}

/* ---- 产品搜索区（§9.3） ---- */
.inqu-search{position:relative;}
.inqu-search-box{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:10px;
                 padding:0 14px;background:#fff;transition:border-color .18s,box-shadow .18s;}
.inqu-search-box:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(91,141,184,.14);}
.inqu-search-box svg{color:var(--text3);flex:none;}
.inqu-search-input{flex:1;min-width:0;height:46px;border:0;outline:0;background:transparent;font-size:14px;color:var(--text);}
.inqu-results{position:absolute;top:calc(100% + 6px);left:0;right:0;z-index:60;background:#fff;border:1px solid var(--line);
               border-radius:12px;box-shadow:0 12px 32px rgba(26,37,47,.14);max-height:320px;overflow:auto;}
.inqu-result-row{display:flex;align-items:center;gap:12px;padding:10px 14px;cursor:pointer;}
.inqu-result-row:hover{background:#F4F7FA;}
.inqu-result-row img{width:44px;height:44px;object-fit:cover;border-radius:8px;background:#EDF1F4;flex:none;}
/* 无主图产品优雅降级（2026-10-05）：灰色占位块，不裂图 */
.inqu-result-row .inqu-thumb-ph{width:44px;height:44px;border-radius:8px;background:#EDF1F4;flex:none;}
.inqu-result-info{flex:1;min-width:0;}
.inqu-result-name{font-size:14px;font-weight:600;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.inqu-result-code{font-size:12px;color:var(--text3);}
.inqu-result-add{flex:none;height:30px;padding:0 12px;font-size:12.5px;}
.inqu-result-add.added{background:#E8F6EE;color:#1E8449;border-color:#1E8449;cursor:not-allowed;}
.inqu-search-note{padding:16px;font-size:13px;color:var(--text3);text-align:center;}

/* ---- 询价车列表（§9.4） ---- */
.inqu-cart{border:1px solid var(--line);border-radius:14px;padding:18px 20px 16px;background:#fff;}
.inqu-cart-list{display:flex;flex-direction:column;gap:12px;}
.inqu-cart-row{display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:#FAFBFC;}
.inqu-cart-row img{width:48px;height:48px;object-fit:cover;border-radius:8px;background:#EDF1F4;flex:none;}
.inqu-cart-row .inqu-thumb-ph{width:48px;height:48px;border-radius:8px;background:#EDF1F4;flex:none;}
.inqu-cart-info{flex:1;min-width:0;}
.inqu-cart-name{font-size:14px;font-weight:600;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.inqu-cart-code{font-size:12px;color:var(--text3);}
.inqu-cart-qty{display:flex;align-items:center;gap:7px;flex:none;}
.inqu-cart-qty label{font-size:12px;color:var(--text3);}
.inqu-cart-del{flex:none;width:32px;height:32px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--text3);
               display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:color .18s,border-color .18s;}
.inqu-cart-del:hover{color:#C0392B;border-color:#C0392B;}
.inqu-cart-empty{font-size:13.5px;color:var(--text3);padding:22px 0;text-align:center;}
.inqu-clear-btn{margin-top:16px;width:100%;}

/* ---- 询价信息表单（§9.5） ---- */
.inqu-form{border:1px solid var(--line);border-radius:14px;padding:20px 22px 22px;background:#fff;min-width:0;}
.form-field{margin-bottom:16px;}
.form-field label{display:block;font-size:13px;font-weight:600;color:var(--text);margin-bottom:7px;}
.form-field label em{color:#C0392B;font-style:normal;}
.form-field input,.form-field textarea{width:100%;height:44px;border:1px solid var(--line);border-radius:10px;padding:0 13px;
                                        font-size:14px;color:var(--text);outline:0;background:#fff;transition:border-color .18s,box-shadow .18s;}
.form-field textarea{height:auto;padding:11px 13px;resize:vertical;line-height:1.6;}
.form-field input:focus,.form-field textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(91,141,184,.14);}
.form-field input.invalid,.form-field textarea.invalid{border-color:#C0392B;}
.country-suggest{position:relative;margin-top:6px;}
.country-suggest-list{position:absolute;top:0;left:0;right:0;z-index:60;background:#fff;border:1px solid var(--line);
                       border-radius:10px;box-shadow:0 10px 28px rgba(26,37,47,.14);max-height:230px;overflow:auto;}
.country-suggest-item{padding:9px 14px;font-size:13.5px;color:var(--text);cursor:pointer;}
.country-suggest-item:hover{background:#F4F7FA;}
.inqu-error{font-size:13px;color:#C0392B;margin:0 0 14px;line-height:1.5;}
.inqu-submit{width:100%;height:48px;font-size:15px;}

/* ---- 加入询价车浮窗（§9.2） ---- */
.inqu-add-prod{display:flex;gap:14px;align-items:center;margin-bottom:16px;}
.inqu-add-prod img{width:76px;height:76px;object-fit:cover;border-radius:10px;background:#EDF1F4;}
.inqu-add-name{font-size:15px;font-weight:700;color:var(--text);margin-bottom:3px;}
.inqu-add-code{font-size:13px;color:var(--text3);}

/* ---- 成功弹窗（§9.6 方案 A） ---- */
.inquiry-success-modal{width:320px;padding:0 28px 24px;text-align:center;}
.inquiry-success-modal .modal-close{position:absolute;top:14px;right:14px;margin:0;}
.inquiry-success-modal .modal-body{display:none;}
.inquiry-success-modal .modal-footer{display:none;}
.inquiry-success-modal .modal-header{display:none;}
.success-icon{width:52px;height:52px;border:2px solid #27AE60;border-radius:50%;display:flex;align-items:center;justify-content:center;margin:32px auto 14px;}
.success-title{font-size:18px;font-weight:700;color:#1A252F;margin:0 0 8px;}
.success-desc{font-size:13px;color:#6B7C8D;line-height:1.7;margin:0;}
.success-countdown{font-size:11px;color:#B0BCC7;margin:14px 0 0;}

@media (max-width:760px){
  .inquiry-page{padding-top:24px;padding-bottom:64px;}
  .inquiry-layout{grid-template-columns:1fr;gap:28px;margin-top:20px;}
  .inquiry-success-modal{width:auto;margin:0 20px;}
}

/* ============================================================
   全站移动防溢出铁律（WebKit / iOS Safari 真机根因修复）
   根因：grid/flex item 默认 min-width:auto；WebKit 对 flex:1 /
   width:100% 的表单控件 intrinsic 最小尺寸做循环解析，取值为
   包含块宽度，把 grid 轨道撑大出界（Chromium 同宽度不溢出，
   headless 扫描因此无法发现，真机多机型出界）。
   修复：移动布局下布局容器直接子项显式 min-width:0；容器统一
   overflow-wrap 兜底长词/长 URL。
   ============================================================ */
@media (max-width:840px){
  .hero-grid>*,.card-grid>*,.why-grid>*,.footer-grid>*,.product-grid>*,
  .pd-related-grid>*,.kb-grid>*,.related-grid-4>*,.kb-la-grid>*,
  .kb-lc-wall>*,.inquiry-layout>*{min-width:0;}
  .footer-logo{width:100%;max-width:100%;}
  .footer-logo img{max-width:100%;}
  .hero-grid,.card-grid,.why-grid,.footer-grid,.product-grid,
  .pd-related-grid,.kb-grid,.related-grid-4,.kb-la-grid,
  .kb-lc-wall,.inquiry-layout{overflow-wrap:break-word;}
}

/* ============================================================
   移动端（含 iPad mini 761-840 窄平板竖屏）顶部间距统一
   （2026-10-05 用户实测：iPad mini 768 不命中 ≤760 移动块，
   inquiry/faq 面包屑贴 header；"所有移动端"口径应一致）
   六页面包屑距 header 统一 24px；≤760 移动块已声明同值，
   此块补齐 761-840 区间（iPad mini 768、iPad 10.2 834 等），
   值相同、先后声明不冲突；≥841 桌面维持原状。
   ============================================================ */
@media (max-width:840px){
  .products-page,.pd-page,.article-page,.faq-page,.inquiry-page,.knowledge-page,.legal-page{padding-top:24px;}
}

/* ============================================================
   数量步进器（§9.x 2026-10-05：自定义 [−][+] 步长100；iOS Safari
   不显示原生 number spinner，改三件套；inputmode=numeric 弹数字键盘）
   置于文件末尾：覆盖 .form-field input / 旧 cart 行 input 等页面级规则
   ============================================================ */
.stepper{display:inline-flex;align-items:center;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff;}
.stepper .stepper-btn{width:44px;height:44px;min-width:44px;border:none;background:#F5F8FA;color:var(--text);
                      font-size:20px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;
                      transition:background .15s;padding:0;}
.stepper .stepper-btn:active{background:#E4EBF0;}
.stepper .stepper-btn:disabled{opacity:.35;cursor:not-allowed;background:#F5F8FA;}
.stepper input{width:76px;min-width:0;border:none;text-align:center;font-size:15px;font-weight:600;color:var(--text);
               height:44px;padding:0;background:#fff;outline:0;
               -moz-appearance:textfield;appearance:textfield;}
.stepper input::-webkit-outer-spin-button,.stepper input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0;}
.stepper-sm .stepper-btn{width:40px;height:40px;min-width:40px;font-size:18px;}
.stepper-sm input{width:64px;height:40px;font-size:14px;}

/* ============================================================
   Contact 联系页（§13 定稿 2026-10-05 方案3视觉落地，认证背书模块
   用户否决移除）：全白无卡片 + 大留白；左栏联系方式细线分隔
   （顶线 #D8E0E6、行间 #E9EEF2）；右栏两块以主色短上边线
   （#2C3E50）区隔，标题英文大写小号；双按钮跟随全站 btn 体系；
   6 语言防乱：数据（联系信息）不随语言变、UI 文案走字典
   ============================================================ */
.contact-page{max-width:1140px;margin:0 auto;padding-top:40px;}
.contact-wrap{display:grid;grid-template-columns:1.1fr 1fr;gap:64px;align-items:start;padding:0 0 56px;}
.contact-title{font-size:clamp(26px,3.2vw,36px);font-weight:800;color:var(--text);line-height:1.2;margin:0 0 14px;}
.contact-sub{font-size:15px;color:var(--text2);line-height:1.7;margin:0 0 32px;max-width:540px;}
.contact-card{border-top:1px solid #D8E0E6;}
.contact-line{display:flex;gap:18px;padding:20px 2px;border-bottom:1px solid #E9EEF2;align-items:flex-start;}
.contact-ic{color:#2C3E50;flex-shrink:0;margin-top:2px;display:inline-flex;}
.contact-line-body{display:flex;flex-direction:column;gap:3px;min-width:0;}
.contact-label{font-size:11px;text-transform:uppercase;letter-spacing:.8px;color:#9AA8B4;font-weight:700;}
.contact-value{font-size:15px;color:var(--text);line-height:1.6;margin-top:4px;word-break:break-word;overflow-wrap:anywhere;}
.contact-email{color:#5B8DB8;font-weight:700;text-decoration:none;}
.contact-email:hover{text-decoration:underline;}
.contact-right{display:flex;flex-direction:column;gap:26px;}
.contact-resp{border-top:1px solid #2C3E50;padding-top:22px;}
.contact-resp h2{font-size:14px;text-transform:uppercase;letter-spacing:.8px;color:var(--text);font-weight:800;margin:0 0 12px;}
.contact-resp p{font-size:14.5px;color:#4A5A68;line-height:1.8;margin:0;}
.contact-next{border-top:1px solid #2C3E50;padding-top:22px;}
.contact-next h2{font-size:14px;text-transform:uppercase;letter-spacing:.8px;color:var(--text);font-weight:800;margin:0 0 18px;}
.contact-actions{display:flex;gap:12px;margin:0 0 18px;}
.contact-actions .btn{flex:1;justify-content:center;text-align:center;font-weight:700;font-size:15px;padding:14px 22px;}
.contact-faq{font-size:13.5px;color:var(--text2);line-height:1.7;margin:0;}
.contact-faq a{color:#5B8DB8;font-weight:700;text-decoration:none;}
.contact-faq a:hover{text-decoration:underline;}
/* 移动端（≤760）：单列堆叠 */
@media (max-width:760px){
  .contact-page{padding-top:24px;}
  .contact-wrap{grid-template-columns:1fr;gap:30px;padding:0 0 48px;}
  .contact-actions{flex-direction:column;}
  .contact-actions .btn{width:100%;}
}
/* iPad mini 761-840 窄平板竖屏（§D3：≤840 移动间距口径，入口距 header 统一 24px） */
@media (max-width:840px){
  .contact-page{padding-top:24px;}
}

/* ============================================================
   全站面包屑起始位置统一（§D3 2026-10-05 用户实测：faq 78 / knowledge 98 /
   inquiry 72 / 产品详情 122 与 products-contact 112 不一致 → 统一 112）
   桌面 ≥841：顶部间距 40px（距 header 112px），与 products/contact 对齐；
   knowledge 多出的 26px 来自 .kb-head-row margin，一并清零；
   pd 页历史 margin 24 改为 0（由 padding-top 统一承担）。
   移动 ≤840：1228 行已统一 padding-top 24px，此处补 kb-head-row 清零
   ============================================================ */
@media (min-width:841px){
  .faq-page,.knowledge-page,.inquiry-page,.pd-page,.article-page{padding-top:40px;}
  .kb-head-row{margin-top:0;align-items:flex-start;}
}
@media (max-width:840px){
  .kb-head-row{margin-top:0;align-items:flex-start;}
}

/* ============================================================
   About 页（§10，2026-10-05 实现）
   区块：横幅+H1+简介 / 左文右六图 / 全球客户地图 / 统计 / 视频 / CTA
   与全站体系一致：container 1280、section-soft 浅灰、btn 体系、hero-stats 复用
   ============================================================ */
.about-page{padding-top:40px;padding-bottom:72px;}
.about-hero{text-align:center;margin-bottom:56px;}
.about-banner-wrap{position:relative;width:100%;aspect-ratio:16/5;overflow:hidden;border-radius:14px;margin-bottom:36px;background:#F1F4F7;box-shadow:0 14px 40px rgba(26,37,47,.18);}
.about-banner-wrap img{width:100%;height:100%;object-fit:cover;display:block;}
.about-banner-ov{position:absolute;inset:0;background:linear-gradient(180deg,rgba(16,34,43,.06) 0%,rgba(16,34,43,.42) 55%,rgba(16,34,43,.82) 100%);display:flex;align-items:flex-end;text-align:left;}
.about-banner-cap{padding:44px 48px;max-width:820px;}
.about-banner-rule{display:block;width:52px;height:3px;background:#FFFFFF;border-radius:2px;margin-bottom:18px;}
.about-banner-cap .about-title{color:#fff;font-size:44px;letter-spacing:.5px;text-shadow:0 2px 18px rgba(0,0,0,.4);margin:0 0 12px;}
.about-banner-cap .about-sub{color:rgba(255,255,255,.92);text-shadow:0 1px 10px rgba(0,0,0,.35);max-width:660px;margin:0;font-size:16px;line-height:1.75;}
.about-title{font-size:34px;font-weight:700;margin:0 0 14px;color:#1B2834;}
.about-sub{max-width:780px;margin:0 auto;color:#5B6B77;font-size:15px;line-height:1.75;}
.about-main{display:grid;grid-template-columns:1.05fr 1fr;gap:54px;align-items:start;margin-bottom:64px;}
.about-text-block{margin-bottom:34px;padding-bottom:34px;border-bottom:1px solid var(--line);}
.about-text-block:last-child{border-bottom:0;padding-bottom:0;margin-bottom:0;}
.about-text-block h2{font-size:24px;font-weight:600;margin:0 0 14px;color:#1B2834;letter-spacing:.2px;}
.about-text-block h2::after{content:"";display:block;width:28px;height:2px;background:var(--accent);border-radius:2px;margin-top:12px;}
.about-text-block p{margin:0;color:#4A5A68;font-size:15px;line-height:1.95;}
.about-photos{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.about-photo{border-radius:12px;overflow:hidden;background:#F1F4F7;}
.about-photo img{width:100%;height:100%;object-fit:cover;display:block;}
.about-map-section{text-align:center;margin-bottom:64px;}
.about-map-card{background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:0 8px 28px rgba(26,37,47,.08);max-width:980px;margin:0 auto;padding:40px 28px 30px;}
.about-map-rule{display:inline-block;width:52px;height:3px;background:var(--accent);border-radius:2px;margin-bottom:14px;}
.about-map-card>h2{font-size:26px;font-weight:700;margin:0 0 8px;color:#1B2834;}
.about-map-summary{color:#5B6B77;font-size:14.5px;margin:0 0 22px;}
.about-map-wrap{max-width:920px;margin:0 auto 6px;position:relative;}
.about-map-wrap svg{width:100%;height:auto;display:block;}
.map-tip{position:absolute;z-index:60;background:#fff;border:1px solid var(--accent);border-radius:8px;padding:6px 12px;font-size:12.5px;color:#1B2834;box-shadow:0 4px 14px rgba(26,37,47,.10);pointer-events:none;white-space:nowrap;}
.about-map-stat{color:#3D4F5D;font-size:13.5px;margin:0 0 26px;}
.about-map-details{max-width:920px;margin:0 auto;text-align:left;}
.about-map-details summary{cursor:pointer;font-size:13.5px;color:#2C3E50;display:inline-block;margin-bottom:10px;}
.about-map-details summary:hover{color:#5B8DB8;}
.about-map-tags{display:flex;flex-wrap:wrap;gap:8px;}
.about-map-tag{background:#F1F4F7;color:#3D4F5D;border-radius:999px;padding:5px 12px;font-size:12.5px;}
.about-map-tag .tag-count{color:var(--accent);font-weight:600;}
.about-map-missing{color:#9AA7B1;font-size:14px;}
.about-stats{margin-bottom:64px;}
.about-stats .hero-stats{justify-content:space-between;text-align:center;max-width:min(980px,100%);margin:0 auto;gap:clamp(28px,4vw,56px);}
.about-stats .hero-stats .stat{flex:0 0 auto;}
.about-stats .stat-num{font-size:clamp(28px,3.2vw,40px);}
.about-stats .stat-label{font-size:clamp(13px,1.1vw,15px);}
.about-video-section{max-width:920px;margin:0 auto 64px;}
.about-video{border-radius:14px;overflow:hidden;background:#F1F4F7;}
.about-video video{width:100%;height:100%;display:block;object-fit:cover;}
.about-cta{background:#F4F7FA;border:1px solid var(--line);border-radius:16px;max-width:920px;margin:0 auto 64px;padding:66px 24px 60px;text-align:center;}
.about-cta h2{font-size:30px;font-weight:700;margin:0 0 14px;color:#1B2834;letter-spacing:.3px;}
.about-cta-text{margin:0 auto 32px;color:#5B6B77;font-size:15px;line-height:1.85;max-width:580px;}
.about-cta .btn{min-width:220px;height:52px;padding:0 46px;font-size:14.5px;letter-spacing:.4px;border-radius:8px;}
@media (max-width:840px){
  .about-page{padding-top:24px;padding-bottom:48px;}
  .about-hero{margin-bottom:40px;}
  .about-banner-wrap{height:250px;aspect-ratio:auto;border-radius:10px;margin-bottom:26px;}
  .about-banner-cap{padding:22px 24px;}
  .about-banner-rule{margin-bottom:12px;}
  .about-banner-cap .about-title{font-size:27px;}
  .about-banner-cap .about-sub{font-size:14px;}
  .about-title{font-size:26px;}
  .about-sub{font-size:14px;}
  .about-main{grid-template-columns:1fr;gap:34px;margin-bottom:44px;}
  .about-text-block h2{font-size:21px;}
  .about-photos{gap:10px;}
  .about-map-section{margin-bottom:44px;}
  .about-map-card{padding:28px 16px 22px;border-radius:14px;}
  .about-map-card>h2{font-size:21px;}
  .about-map-details summary{font-size:13px;}
  .about-map-tag{font-size:12px;padding:4px 10px;}
  /* 移动端：默认只显示 2 行胶囊，展开后显示全部 */
  .about-map-details:not([open]) .about-map-tags{max-height:70px;overflow:hidden;}
  .about-stats{margin-bottom:44px;}
  .about-video-section{margin-bottom:44px;}
  .about-cta{margin-bottom:44px;padding:46px 16px;border-radius:14px;}
  .about-cta h2{font-size:24px;}
  .about-cta-text{font-size:14px;line-height:1.75;}
  .about-cta .btn{min-width:0;width:100%;max-width:320px;}
}

/* ===== 首页主标题：词组化自适应断行（2026-10-06 定稿）
 * 词组 <span class="ph"> 内部 nowrap 锁死不拆，词组间由浏览器按可用宽度自动断行，
 * 适配任意分辨率；德语复合词较长，移动端单独缩小字号。 ===== */
.hero-title .ph{white-space:nowrap;}
html[lang="de"] .hero h1{font-size:clamp(20px,5vw,40px);}
/* ============ 法律页 Privacy / Terms（§I.11 2026-10-07） ============ */
.legal-page { max-width: 980px; padding-top: 40px; padding-bottom: 72px; }
.legal-header { margin: 0 0 28px; }
.legal-title {
  font-size: clamp(26px, 3.2vw, 40px);
  font-weight: 700;
  color: var(--ink, #10222b);
  line-height: 1.2;
}
.legal-content {
  max-width: 780px;
  font-size: 15.5px;
  line-height: 1.85;
  color: #334155;
}
.legal-content .legal-meta {
  font-size: 14px;
  color: #64748b;
  margin: 0 0 20px;
}
.legal-content h2 {
  font-size: 21px;
  font-weight: 700;
  color: var(--ink, #10222b);
  margin: 36px 0 12px;
  padding-top: 6px;
}
.legal-content h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink, #10222b);
  margin: 24px 0 10px;
}
.legal-content p { margin: 0 0 14px; }
.legal-content ul { margin: 0 0 16px; padding-left: 22px; }
.legal-content li { margin-bottom: 6px; }
.legal-content strong { color: #10222b; font-weight: 700; }
.legal-content hr {
  border: none;
  border-top: 1px solid #e2e8f0;
  margin: 26px 0;
}
.legal-table {
  width: 100%;
  border-collapse: collapse;
  margin: 8px 0 20px;
  font-size: 14.5px;
}
.legal-table th, .legal-table td {
  border: 1px solid #dbe3ea;
  padding: 9px 12px;
  text-align: left;
}
.legal-table th { background: #f4f7f9; color: #10222b; font-weight: 700; }
.legal-content a { color: var(--accent, #1d6fb8); text-decoration: underline; }

@media (max-width: 760px) {
  .legal-header { margin: 0 0 20px; }
  .legal-content { font-size: 15px; }
  .legal-table { font-size: 13.5px; }
  .legal-table th, .legal-table td { padding: 7px 8px; }
}

/* ============ 分享工具条（2026-10-18，§分享方案 P0+P1） ============ */
.share-bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:18px 0 0;}
.article-body .share-bar{margin-bottom:18px;} /* 文章页标题下分享条：下间距=上间距18px（2026-10-20） */
.share-cap{font-size:13px;font-weight:600;color:var(--text2);margin-right:2px;}
.share-icons{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.share-div{width:1px;height:26px;background:var(--line);margin:0 2px;}
.sbtn{width:42px;height:42px;border:1px solid #dde3ea;border-radius:10px;background:#f4f7fa;
      display:inline-flex;align-items:center;justify-content:center;cursor:pointer;
      color:#3D566E;transition:background .18s,border-color .18s,color .18s,transform .18s;}
.sbtn svg{width:20px;height:20px;display:block;}
.sbtn:hover{background:var(--accent);border-color:var(--accent);color:#fff;transform:translateY(-1px);}
.linkbtn{display:inline-flex;align-items:center;gap:8px;height:42px;padding:0 16px;
         border:1px solid #dde3ea;border-radius:10px;background:#fff;color:#3D566E;
         font-size:13px;font-weight:600;cursor:pointer;transition:border-color .18s,color .18s;}
.linkbtn svg{width:17px;height:17px;display:block;}
.linkbtn:hover{border-color:var(--accent);color:var(--accent);}
.share-mobile{display:none;flex:1;}
.m-share{display:inline-flex;align-items:center;justify-content:center;gap:8px;flex:1;
         height:46px;background:var(--accent);color:#fff;border:none;border-radius:11px;
         font-size:14px;font-weight:600;cursor:pointer;
         box-shadow:0 4px 14px rgba(91,141,184,.28);transition:background .18s;}
.m-share svg{width:18px;height:18px;display:block;}
.m-share:hover{background:var(--accent-dark);}
.m-copy{display:inline-flex;align-items:center;justify-content:center;gap:7px;height:46px;padding:0 16px;
        background:#fff;border:1px solid #dde3ea;border-radius:11px;color:#3D566E;
        font-size:13px;font-weight:600;cursor:pointer;transition:border-color .18s,color .18s;}
.m-copy svg{width:16px;height:16px;display:block;}
.m-copy:hover{border-color:var(--accent);color:var(--accent);}
.share-page-btn{display:inline-flex;align-items:center;gap:7px;height:40px;padding:0 14px;
                background:#fff;border:1px solid var(--line);border-radius:3px;color:var(--text);
                font-size:12.5px;font-weight:600;cursor:pointer;margin-left:auto;
                transition:border-color .18s,color .18s;}
.share-page-btn svg{width:16px;height:16px;display:block;}
.share-page-btn:hover{border-color:var(--accent);color:var(--accent);}
.share-end{max-width:var(--col);margin:34px auto 0;padding-top:22px;border-top:1px solid var(--line);} /* 方案A：文末分享条对齐正文列宽 */

/* 2026-10-20 产品列表页：文末分享条与产品网格同宽（跟随容器，自适应各屏） */
.products-page .share-end{max-width:none;}
.share-end-cap{font-size:12.5px;font-weight:600;color:var(--text2);margin-bottom:10px;}

@media (max-width: 767px) {
  .share-cap,.share-icons{display:none;}
  .share-mobile{display:flex;gap:10px;}
  .share-bar{margin:14px 0 0;}
  .article-body .share-bar{margin-bottom:14px;} /* 移动端：下间距=上间距14px */
  .share-end{margin-top:26px;padding-top:18px;}
}