:root{
  --blue:#0A6CBF;          /* 品牌主色 明亮海蓝（gmmma 风提亮，原深蓝） */
  --blue-2:#F2902B;        /* 点缀转化色 明快橙（原 #E07520 哑光橙提亮） */
  --blue-3:#2CB1B5;        /* 青绿点缀（取自 gmmma #2cb1b5） */
  --yellow:#FBB933;        /* 暖黄点缀（取自 gmmma #fbb933） */
  --red:#C6020A;           /* 强调红（取自 gmmma #c6020a） */
  --green:#27B36B;         /* 成功绿（原 #369962 提亮） */
  --warn:#D14A4A;         /* 警示红 */
  --ink:#15212E;           /* 大标题 深墨蓝黑 */
  --text:#3A4654;          /* 正文内容（原 #444 提亮一档） */
  --muted:#7A8794;         /* 辅助小字/区县标签（原 #808893 提亮） */
  --bg:#FBFCFE;            /* 页面全局背景 近纯白（原 #F6F7F8 提亮） */
  --card:#FFFFFF;          /* 板块/案例卡片底色 纯白（原 #EAECEF 提亮） */
  --nav:#0A6CBF;           /* 导航/页脚 明亮蓝（原深海灰蓝，大幅提亮） */
  --line:#E8EEF3;          /* 分割线 亮灰蓝（原 #E2E5E9） */
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--text);line-height:1.7;background:var(--bg)}
a{color:inherit;text-decoration:none}
.container{width:100%;max-width:1080px;margin:0 auto;padding:0 18px}
.muted{color:var(--muted)}

/* ===== header ===== */
.site-header{position:sticky;top:0;z-index:50;background:var(--nav);border-bottom:1px solid rgba(255,255,255,.08)}
.nav-wrap{display:flex;align-items:center;height:62px;gap:18px}
.logo{font-weight:800;font-size:19px;color:#fff;white-space:nowrap}
.main-nav{display:flex;gap:8px;flex:1}
.main-nav a{color:#fff;font-size:15px;padding:6px 12px;transition:color .2s}
.main-nav a:hover{color:var(--blue-2)}
.nav-phone{color:#fff;background:var(--blue-2);padding:7px 14px;border-radius:6px;font-weight:700;white-space:nowrap;transition:background .2s}
.nav-phone:hover{background:#d97a1e}
.nav-toggle{display:none;background:none;border:none;font-size:22px;cursor:pointer;color:#fff}

/* ===== hero - 厂房地坪实景图 + 深蓝压暗层，白色文字无花哨彩底 ===== */
.hero{position:relative;overflow:hidden;color:#fff;padding:74px 0 100px;z-index:1;
  background-color:var(--blue);
  background-image:linear-gradient(rgba(10,108,191,.78),rgba(10,40,70,.82)), url('/assets/factory.jpg');
  background-size:cover;background-position:center;background-repeat:no-repeat;
}
.hero::before{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(180deg,transparent 55%,rgba(10,40,70,.5));
}
.hero .container{position:relative;z-index:2}
.hero h1{font-size:34px;margin-bottom:14px;letter-spacing:1px;text-shadow:0 2px 16px rgba(0,0,0,.35)}
.hero-sub{font-size:19px;font-weight:600;color:#fff;text-shadow:0 1px 8px rgba(0,0,0,.3)}
.hero-sub2{font-size:15px;color:rgba(255,255,255,.92);margin-top:6px;text-shadow:0 1px 8px rgba(0,0,0,.28)}
.hero-btns{margin-top:26px;display:flex;gap:14px;flex-wrap:wrap}
.btn{padding:12px 24px;border-radius:8px;font-weight:700;font-size:15px;display:inline-block;transition:all .2s}
.btn-primary{background:var(--blue-2);color:#fff;box-shadow:0 6px 20px rgba(0,0,0,.2)}
.btn-primary:hover{background:#d97a1e;color:#fff;box-shadow:0 8px 24px rgba(240,144,43,.4)}
.btn-ghost{border:2px solid #fff;color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.18)}

/* ===== sub-nav 导航栏 ===== */
.sub-nav{background:#fff;position:sticky;top:62px;z-index:40;border-bottom:1px solid var(--line)}
.sub-nav .container{display:flex;align-items:center;gap:0}
.sub-nav a{color:var(--ink);padding:14px 22px;font-size:15px;white-space:nowrap;border-bottom:3px solid transparent;transition:.2s;font-weight:600}
.sub-nav a:hover,.sub-nav a.active{color:var(--blue);border-bottom-color:var(--blue)}

/* ===== sections ===== */
.section{padding:72px 0 76px;position:relative;z-index:1;background:#fff;scroll-margin-top:70px}
.section-alt{background:#EEF3F8;position:relative;z-index:1}
/* ===== 首页板块：大面积色块上下分隔 =====
   手法：亮蓝渐变深色块作视觉锚点（应用案例 / 联系我们），浅色块交替，
   板块边界一清二楚。纯 CSS 渐变，不引图、不耗流量、GEO 安全。 */
#products{background:#FFFFFF}
#cases{background:linear-gradient(180deg,#0A6CBF 0%,#1289E8 50%,#0A6CBF 100%)}
#knowledge{background:#FFF3E0}
#faq{background:#FFFFFF}
#about{background:#E9F2FC}
#network{background:#FFF3E0}
#contact{background:linear-gradient(180deg,#0A6CBF 0%,#1289E8 45%,#0A5CA8 100%)}
/* 深色块：微弱斜纹质感（纯 CSS，零流量），内容层抬升避免被纹理遮挡 */
#cases::before,#contact::before{content:"";position:absolute;inset:0;pointer-events:none;background:repeating-linear-gradient(45deg,transparent 0,transparent 60px,rgba(255,255,255,.04) 60px,rgba(255,255,255,.04) 120px)}
#cases>*,#contact>*{position:relative;z-index:1}
/* 深色块内文字反白，保证可读性 */
#cases .sec-title,#contact .sec-title{color:#fff}
#cases .sec-title::after,#contact .sec-title::after{background:#FBB933}
#cases .sec-desc,#contact .sec-desc{color:rgba(255,255,255,.92)}
#cases .sec-more a,#contact .sec-more a{border-color:#fff;color:#fff}
#cases .sec-more a:hover,#contact .sec-more a:hover{background:#fff;color:#0A6CBF}
#contact .contact-cta-text{color:rgba(255,255,255,.92)}
#contact .cb-badge{background:rgba(255,255,255,.94)}
#contact .wechat-id{color:#FBB933}
#contact .contact-qr-left{border-top-color:rgba(255,255,255,.35)}
.sec-title{font-size:30px;color:var(--blue);text-align:center;margin-bottom:10px;font-weight:700}
.sec-title::after{content:"";display:block;width:52px;height:3px;background:var(--blue);margin:12px auto 0;border-radius:2px}
.sec-desc{text-align:center;color:var(--muted);margin-bottom:32px;max-width:820px;margin-left:auto;margin-right:auto}
.sec-more{text-align:center;margin-top:30px}
.sec-more a{display:inline-block;padding:11px 30px;border:2px solid var(--blue);border-radius:6px;color:var(--blue);font-weight:600;font-size:15px;transition:all .2s}
.sec-more a:hover{background:var(--blue);color:#fff}

/* ===== products ===== */
.product-scroll{overflow:hidden;position:relative}
.product-scroll-track{display:flex;gap:24px;padding:4px 0;transition:none}
.product-scroll:hover .product-scroll-track{animation:slideLeft 15s ease-in-out forwards}
@keyframes slideLeft{
  0%{transform:translateX(0)}
  100%{transform:translateX(calc(-1*(100% + 24px)))}
}
.product-card{flex:0 0 calc(25% - 18px);border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--card);transition:.2s;display:block;text-decoration:none;color:inherit}
.product-card:hover{box-shadow:0 8px 24px rgba(10,108,191,.12);transform:translateY(-3px)}
.card-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.card{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--card);transition:.2s}
.card:hover{box-shadow:0 8px 24px rgba(10,108,191,.12);transform:translateY(-3px)}
.card-img{width:100%;height:160px;object-fit:cover;display:block}
.case-img{width:100%;height:150px;object-fit:cover;display:flex;align-items:center;justify-content:center;background:var(--card);color:var(--muted);font-size:14px}
.card-body{padding:16px}
.tag{display:inline-block;background:#E6F1FB;color:var(--blue);font-size:12px;padding:2px 10px;border-radius:20px;margin-bottom:8px}
.card-body h3{font-size:17px;margin-bottom:6px;color:var(--blue)}
.spec{color:var(--muted);font-size:13px;margin-bottom:6px}
.card-text{color:var(--muted);font-size:14px}

/* ===== cases ===== */
.case-list{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.case-item{display:flex;gap:22px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px}
.case-img{width:120px;min-width:120px;height:90px;border-radius:8px}
.case-body h3{font-size:16px;margin-bottom:6px;color:var(--blue)}
.case-body p{font-size:14px;color:var(--muted)}
.case-no{display:inline-block;font-size:12px;font-weight:700;color:#fff;background:var(--red);padding:2px 8px;border-radius:6px;margin-bottom:6px}
.cd-no{display:inline-block;font-size:13px;font-weight:700;color:#fff;background:var(--red);padding:3px 12px;border-radius:8px;margin-bottom:12px}

/* ===== about ===== */
.about-intro{font-size:16px;margin-bottom:18px;text-align:center;max-width:820px;margin-left:auto;margin-right:auto;color:var(--text)}
.home-def{display:flex;gap:12px;align-items:flex-start;background:#F2F8FE;border:1px solid #C9E2F7;border-left:4px solid var(--blue);border-radius:10px;padding:14px 18px;margin:0 auto 18px;max-width:820px}
.home-def-tag{flex:0 0 auto;background:var(--blue);color:#fff;font-size:12px;font-weight:700;padding:3px 10px;border-radius:6px;margin-top:3px;letter-spacing:1px}
.home-def-text{margin:0;font-size:15px;line-height:1.8;color:#0A6CBF;font-weight:600}
.city-def{background:#F2F8FE;border:1px solid #C9E2F7;border-left:4px solid var(--blue);border-radius:10px;padding:13px 16px;margin:0 0 14px;font-size:15px;line-height:1.8;color:#0A6CBF;font-weight:600}
.about-points{list-style:none;display:grid;grid-template-columns:repeat(2,1fr);gap:12px;max-width:780px;margin:0 auto}
.about-points li{background:var(--card);padding:12px 16px;border-radius:8px;border-left:3px solid var(--blue);font-size:15px;color:var(--text)}

/* ===== knowledge/news ===== */
.news-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.news-item{background:#fff;border:1px solid var(--line);border-radius:10px;padding:16px}
.news-meta{display:flex;gap:10px;align-items:center;font-size:12px;color:var(--muted);margin-bottom:6px}
.news-cat{background:#E6F1FB;color:var(--blue);padding:2px 8px;border-radius:4px}
.news-item h3{font-size:16px;color:var(--blue);margin-bottom:6px}
.news-item h3 a{color:var(--blue);text-decoration:none}
.news-item h3 a:hover{text-decoration:underline;color:var(--orange)}
.news-item p{font-size:14px;color:var(--muted)}
/* 知识库列表页 */
.news-list-full{max-width:800px;margin:0 auto}
.news-item-full{background:#fff;border:1px solid var(--line);border-radius:10px;padding:24px 28px;margin-bottom:20px}
.news-item-full h2{font-size:20px;color:var(--ink);margin-bottom:12px;line-height:1.4}
.news-body{font-size:15px;color:var(--text);line-height:1.8}

/* ===== knowledge base expand/collapse (pure CSS checkbox) ===== */
.kb-toggle{position:absolute;left:-9999px;width:1px;height:1px;opacity:0;pointer-events:none;margin:0;padding:0}
.news-summary{font-size:14px;color:var(--muted);line-height:1.7;margin-bottom:12px}
.btn-kb-expand{display:inline-block;padding:12px 32px;font-size:16px;color:#fff;background:#F2902B;border-radius:6px;cursor:pointer;font-weight:bold;transition:background .2s;letter-spacing:1px;border:none;text-decoration:none;user-select:none}
.btn-kb-expand:hover{background:#d97a1e}
.btn-kb-collapse{display:none;padding:10px 28px;font-size:15px;color:#fff;background:#808893;border-radius:6px;cursor:pointer;font-weight:bold;margin-top:16px;transition:background .2s;letter-spacing:1px;border:none;text-decoration:none;user-select:none}
.btn-kb-collapse:hover{background:#7A8794}
.news-body-full{display:none;font-size:15px;color:var(--text);line-height:1.8;margin-top:16px;border-top:1px solid var(--line);padding-top:18px}
.kb-toggle:checked ~ .btn-kb-expand{display:none}
.kb-toggle:checked ~ .btn-kb-collapse{display:inline-block}
.kb-toggle:checked ~ .news-body-full{display:block}

/* ===== faq ===== */
.faq-list{max-width:820px;margin:0 auto}
.faq-item{border:1px solid var(--line);border-radius:8px;padding:12px 16px;margin-bottom:10px;background:#fff}
.faq-item summary{cursor:pointer;font-weight:600;color:var(--blue)}
.faq-item p{padding-top:10px;color:var(--muted);font-size:14px}
.btn-faq-more{display:block;margin:16px auto 0;padding:10px 36px;border:1px solid var(--blue);border-radius:8px;background:#fff;color:var(--blue);font-size:14px;font-weight:600;cursor:pointer;transition:all .2s}
.btn-faq-more:hover{background:var(--blue);color:#fff}

/* ===== contact ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:stretch}
.contact-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px;box-shadow:0 4px 18px rgba(10,108,191,.06)}
.contact-card-title{font-size:18px;color:var(--blue);margin-bottom:18px;display:flex;align-items:center;gap:10px;font-weight:700}
.cc-icon{width:34px;height:34px;background:var(--blue);color:#fff;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:17px}
.contact-list{list-style:none;display:flex;flex-direction:column;gap:13px}
.contact-list li{display:flex;flex-direction:column;gap:3px;padding-bottom:12px;border-bottom:1px dashed var(--line)}
.contact-list li:last-child{border-bottom:none;padding-bottom:0}
.ci-label{font-size:12.5px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.04em}
.ci-value{font-size:15.5px;color:var(--ink);font-weight:600}
.ci-phone{color:var(--blue);font-size:18px}
.contact-actions{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap}
.ca-btn{flex:1;min-width:120px;text-align:center;padding:11px 14px;border-radius:8px;color:#fff;font-weight:700;font-size:14px;transition:all .2s}
.ca-btn:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(0,0,0,.18)}
.ca-tel{background:linear-gradient(180deg,#2ECC71,#27AE60)}
.ca-map{background:linear-gradient(180deg,#2D8CF0,#0A6CBF)}
.contact-cta-card{display:flex;flex-direction:column}
.contact-cta-text{color:var(--muted);font-size:14.5px;line-height:1.7;margin-bottom:16px}
.contact-badges{display:flex;flex-direction:column;gap:10px;margin-bottom:20px}
.cb-badge{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text);font-weight:600;background:#F6F7F8;padding:10px 14px;border-radius:8px;border-left:3px solid var(--blue-2)}
.cb-dot{width:7px;height:7px;background:var(--blue-2);border-radius:50%}
.btn-block{display:block;width:100%;text-align:center;margin-bottom:18px}
.wechat-id{font-size:13px;color:var(--blue);font-weight:600;margin-top:4px}
.contact-qr-left{margin-top:20px;padding-top:16px;border-top:1px dashed var(--line);text-align:center}
.contact-qr-left img{width:120px;height:120px;border-radius:10px;border:2px dashed var(--blue);object-fit:contain;background:#fff}

/* ===== footer ===== */
.site-footer{background:var(--nav);color:#d6dee6;padding:40px 0 22px;margin-top:20px;position:relative;overflow:hidden;z-index:2}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--blue)}
.foot-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.foot-col h4{color:#fff;margin-bottom:12px;font-size:16px}
.foot-col p{font-size:14px;margin-bottom:6px;color:#d6dee6}
.foot-col .muted{max-height:130px;overflow:hidden;display:-webkit-box;-webkit-line-clamp:6;-webkit-box-orient:vertical;color:#b9c3cc}
.foot-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:26px;padding-top:16px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;font-size:13px;color:#9fabb5}
.foot-bottom a{color:var(--blue-2)}

/* ===== 下拉菜单 ===== */
.nav-drop{position:relative}
.nav-drop > a{border-bottom:3px solid transparent !important}
.nav-drop .drop-menu{display:none;position:absolute;top:100%;left:0;min-width:180px;background:#fff;border-radius:0 0 8px 8px;box-shadow:0 8px 24px rgba(0,0,0,.15);z-index:100;padding:8px 0;flex-direction:column;gap:0;border:1px solid var(--line)}
.nav-drop:hover .drop-menu{display:flex}
.drop-menu a{padding:10px 20px;font-size:14px;color:var(--ink);border:none;white-space:nowrap;text-align:left}
.drop-menu a:hover{background:var(--bg);color:var(--blue)}

/* ===== 带图产品下拉菜单 ===== */
.drop-menu-products{min-width:320px;padding:12px;gap:6px!important}
.drop-item-with-img{display:flex!important;align-items:center;gap:12px;padding:8px 12px!important;border-radius:6px;transition:all .2s}
.drop-item-with-img img{width:56px;height:42px;object-fit:cover;border-radius:4px;border:1px solid var(--line);flex-shrink:0;background:var(--bg)}
.drop-item-with-img span{font-size:14px;font-weight:600;color:var(--ink)}
.drop-item-with-img:hover{background:rgba(10,108,191,.06)!important;color:var(--blue)!important}
.drop-item-with-img:hover img{border-color:var(--blue);box-shadow:0 2px 8px rgba(10,108,191,.18)}

/* ===== 产品详情页 ===== */
.product-detail{padding:40px 0;position:relative;z-index:1}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:18px}
.breadcrumb a{color:var(--blue)}
.breadcrumb a:hover{text-decoration:underline}
.pd-title{font-size:32px;font-weight:800;margin:0 0 14px;color:var(--ink)}
.pd-meta{display:flex;gap:16px;align-items:center;flex-wrap:wrap;margin-bottom:16px}
.pd-cat{background:var(--blue);color:#fff;padding:4px 14px;border-radius:20px;font-size:13px;font-weight:600}
.pd-spec{color:var(--muted);font-size:15px}
.pd-desc{font-size:16px;line-height:1.85;color:var(--text);max-width:820px;margin-bottom:36px}
.pd-def{display:flex;gap:12px;align-items:flex-start;background:#F2F8FE;border:1px solid #C9E2F7;border-left:4px solid var(--blue);border-radius:10px;padding:14px 18px;margin:0 0 16px;max-width:860px}
.pd-def-tag{flex:0 0 auto;background:var(--blue);color:#fff;font-size:12px;font-weight:700;padding:3px 10px;border-radius:6px;margin-top:3px;letter-spacing:1px}
.pd-def-text{margin:0;font-size:16px;line-height:1.85;color:#0A6CBF;font-weight:600}
.pd-gallery-title{text-align:left;margin:0 0 18px}
.pd-gallery-title::after{margin:10px 0 0}
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px}
.gallery-link{display:block;position:relative;overflow:hidden;border-radius:8px;border:1px solid var(--line);transition:transform .2s,box-shadow .2s,border-color .2s;cursor:pointer}
.gallery-link:hover{transform:translateY(-4px);box-shadow:0 8px 20px rgba(10,108,191,.16);border-color:var(--blue)}
.gallery-link img{width:100%;height:170px;object-fit:cover;display:block;background:var(--bg)}
/* 图片灯箱（纯 CSS 复选框+标签，零 JS/零锚点，任何浏览器 100% 可用） */
.lb-toggle{position:absolute;left:-9999px;width:1px;height:1px;opacity:0;pointer-events:none;margin:0;padding:0}
.lb-overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100%;z-index:99999;background:rgba(21,28,38,.92);align-items:center;justify-content:center;padding:24px;box-sizing:border-box}
.lb-toggle:checked + .lb-overlay{display:flex}
.lb-bg-close{position:fixed;top:0;left:0;width:100%;height:100%;z-index:1;cursor:pointer}
.lb-content{position:relative;z-index:2;display:flex;flex-direction:column;align-items:center}
.lb-img{max-width:92vw;max-height:86vh;border-radius:6px;box-shadow:0 10px 50px rgba(0,0,0,.6);background:#fff;display:block}
.lb-close{display:inline-block;margin-top:16px;padding:10px 28px;font-size:18px;color:#fff;background:#F2902B;border-radius:6px;text-decoration:none;cursor:pointer;font-weight:bold;letter-spacing:2px;z-index:3;transition:background .15s}
.lb-close:hover{background:#c9631a}
.pd-empty{color:var(--muted);padding:48px;text-align:center;background:var(--bg);border-radius:10px;margin-bottom:24px}
.pd-cta{margin-top:36px;display:flex;gap:12px;flex-wrap:wrap}
@media(max-width:520px){
  .pd-title{font-size:24px}
  .gallery{grid-template-columns:repeat(2,1fr);gap:10px}
  .gallery-link img{height:120px}
}

/* ===== responsive ===== */
@media(max-width:860px){
  .main-nav{display:none;position:absolute;top:62px;left:0;right:0;background:var(--nav);flex-direction:column;padding:10px 18px;border-bottom:1px solid rgba(255,255,255,.08)}
  .main-nav.open{display:flex}
  .nav-toggle{display:block}
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .product-card{flex:0 0 calc(50% - 10px);min-width:200px}
  .case-list,.news-list,.about-points,.contact-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .hero h1{font-size:26px}
  .sub-nav .container{overflow-x:auto;-webkit-overflow-scrolling:touch}
  .sub-nav a{padding:12px 16px;font-size:14px}
}
@media(max-width:520px){
  .card-grid{grid-template-columns:1fr}
  .product-card{flex:0 0 85%}
}

/* ===== 左侧悬浮栏：留言板 + 微信 ===== */
.float-sidebar{position:fixed;left:0;top:50%;transform:translateY(-50%);z-index:999;display:flex;flex-direction:column;gap:0}
.float-item{display:flex;align-items:center;cursor:pointer;background:var(--blue-2);color:#fff;padding:10px 14px;border-radius:0 8px 8px 0;font-size:14px;font-weight:600;transition:all .25s;box-shadow:2px 2px 12px rgba(240,144,43,.3);writing-mode:vertical-lr;text-orientation:mixed;letter-spacing:2px}
.float-item:nth-child(2){background:var(--blue);margin-top:6px;box-shadow:2px 2px 12px rgba(10,108,191,.3)}
.float-item:hover{padding-left:20px;padding-right:18px}
.float-item .float-icon{font-size:18px;margin-bottom:4px;display:block}
.float-item .float-label{font-size:13px}

/* ===== 悬浮面板 ===== */
.float-panel{position:fixed;left:56px;top:50%;transform:translateY(-50%) scale(.9);background:#fff;border-radius:12px;box-shadow:0 12px 40px rgba(0,0,0,.2);z-index:998;width:300px;opacity:0;pointer-events:none;transition:all .3s ease;overflow:hidden;border:1px solid var(--line)}
.float-panel.show{opacity:1;pointer-events:auto;transform:translateY(-50%) scale(1)}
.panel-head{background:var(--blue);color:#fff;padding:14px 16px;font-size:15px;font-weight:700;display:flex;justify-content:space-between;align-items:center}
.panel-close{cursor:pointer;font-size:22px;line-height:1;opacity:.8;transition:.2s}
.panel-close:hover{opacity:1}

/* ===== 留言表单 ===== */
.msg-form{padding:16px;display:flex;flex-direction:column;gap:10px}
.msg-form input,.msg-form textarea{border:1.5px solid var(--line);border-radius:8px;padding:10px 12px;font-size:14px;outline:none;transition:border-color .2s;font-family:inherit;color:var(--ink);background:#fff}
.msg-form input:focus,.msg-form textarea:focus{border-color:var(--blue)}
.msg-form textarea{resize:vertical;min-height:64px}
.msg-submit{background:var(--blue-2);color:#fff;border:none;padding:11px;border-radius:8px;font-size:15px;font-weight:700;cursor:pointer;transition:all .2s}
.msg-submit:hover{box-shadow:0 4px 16px rgba(240,144,43,.35);transform:translateY(-1px);background:#d97a1e}

/* ===== 微信二维码 ===== */
.qr-wrap{text-align:center;padding:24px 16px}
.qr-placeholder{width:140px;height:140px;margin:0 auto 12px;background:#E6F1FB;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:48px;border:2px dashed var(--blue)}
.qr-img{width:140px;height:140px;margin:0 auto 12px;display:block;border-radius:12px;border:2px dashed var(--blue);object-fit:contain;background:#fff}
.qr-wrap p{color:var(--ink);font-size:14px;margin-bottom:4px}
.panel-tip{font-size:12px!important;color:var(--muted)!important;padding:0 16px 14px!important;text-align:center!important;margin:0!important}
.panel-tip a{color:var(--blue);font-weight:600}

/* ===== 悬浮面板快捷按钮 ===== */
.panel-actions{display:flex;flex-direction:column;gap:8px;padding:14px 16px 0}
.pa-btn{display:block;text-align:center;text-decoration:none;border-radius:8px;padding:11px 12px;font-size:14px;font-weight:700;color:#fff;transition:all .2s}
.pa-btn:hover{transform:translateY(-1px);box-shadow:0 4px 14px rgba(0,0,0,.18)}
.pa-tel{background:linear-gradient(180deg,#2ECC71,#27AE60)}
.pa-map{background:linear-gradient(180deg,#2D8CF0,#0A6CBF)}
.msg-form select{border:1.5px solid var(--line);border-radius:8px;padding:10px 12px;font-size:14px;outline:none;transition:border-color .2s;font-family:inherit;color:var(--ink);background:#fff;cursor:pointer}
.msg-form select:focus{border-color:var(--blue)}

/* ===== 首页联系我们二维码 ===== */
.contact-qr{margin-top:18px;padding-top:16px;border-top:1px dashed var(--line);text-align:center}
.contact-qr img{width:140px;height:140px;border-radius:12px;border:2px dashed var(--blue);object-fit:contain;background:#fff}
.contact-qr p{margin-top:8px;font-size:13px;color:var(--muted)}

/* ===== 侧边栏联系我们二维码 ===== */
.left-wechat-qr{margin-top:12px;padding-top:12px;border-top:1px dashed #ddd;text-align:center}
.left-wechat-qr p{font-size:13px;color:#7A8794;margin-bottom:8px}
.left-wechat-qr img{width:140px;height:140px;border-radius:8px;border:1px dashed #ccc;display:block;margin:0 auto}

/* ===== 移动端悬浮栏 ===== */
@media(max-width:768px){
  .float-sidebar{top:auto;bottom:0;left:0;right:0;transform:none;flex-direction:row;justify-content:center;background:#fff;border-top:1px solid var(--line);padding:6px 0;border-radius:12px 12px 0 0;box-shadow:0 -4px 20px rgba(0,0,0,.1)}
  .float-item{writing-mode:horizontal-tb;border-radius:8px;padding:8px 18px;flex-direction:row;gap:4px}
  .float-item:nth-child(2){margin-top:0;margin-left:6px}
  .float-item .float-icon{margin-bottom:0;margin-right:2px}
  .float-panel{left:50%;top:auto;bottom:70px;transform:translateX(-50%) scale(.9);width:88vw;max-width:340px}
  .float-panel.show{transform:translateX(-50%) scale(1)}
}

/* ===== 城市标签（全国服务网络/产品/案例页共用） ===== */
.city-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.city-tags a{display:inline-block;padding:6px 14px;border:1px solid var(--line);border-radius:20px;color:var(--blue);font-size:13px;text-decoration:none;background:#fff;transition:all .2s}
.city-tags a:hover{background:var(--blue);color:#fff;border-color:var(--blue)}
.rel-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.rel-list a{display:inline-block;padding:6px 14px;border:1px solid var(--line);border-radius:20px;color:var(--blue);font-size:13px;text-decoration:none;background:#fff;transition:all .2s}
.rel-list a:hover{background:var(--blue);color:#fff;border-color:var(--blue)}

/* ===== 材料独立 GEO 页（materials.php） ===== */
.mat-alias{font-size:16px;color:var(--muted);font-weight:400}
.mat-price{font-size:16px;line-height:1.9;max-width:880px;margin:4px 0 6px}
.mat-table{width:100%;max-width:760px;border-collapse:collapse;margin:8px 0 4px}
.mat-table th,.mat-table td{border:1px solid var(--line);padding:10px 14px;font-size:15px;text-align:left}
.mat-table th{background:var(--blue);color:#fff;font-weight:600}
.mat-table td:first-child{background:#F2F8FE;font-weight:600;color:var(--blue);width:30%}
.mat-steps{counter-reset:step;list-style:none;padding:0;max-width:760px;margin:8px 0}
.mat-steps li{position:relative;padding:10px 14px 10px 48px;background:#fff;border:1px solid var(--line);border-radius:8px;margin-bottom:10px;font-size:15px;line-height:1.7}
.mat-steps li::before{counter-increment:step;content:counter(step);position:absolute;left:12px;top:50%;transform:translateY(-50%);width:26px;height:26px;background:var(--blue);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}
.mat-faq{margin-top:8px;max-width:880px}
.mat-faq-item{border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin-bottom:10px;background:#fff}
.mat-faq-q{margin:0 0 4px;color:var(--blue);font-size:16px}
.mat-faq-a{margin:0;color:var(--text);font-size:15px;line-height:1.8}
.mat-belongs{margin:10px 0 18px;padding:10px 14px;background:#F2F7FC;border-left:4px solid var(--blue);border-radius:0 8px 8px 0;color:#2A4D6E;font-size:15px;line-height:1.8}
.mat-kit{margin:8px 0 6px;padding:18px;background:#F7F9FB;border:1px solid var(--line);border-radius:12px}
.kit-list{display:flex;flex-wrap:wrap;gap:12px;margin-top:12px}
.kit-item{flex:1 1 180px;text-decoration:none;border:1px solid var(--line);border-radius:10px;padding:14px 16px;background:#fff;transition:.2s;display:flex;flex-direction:column;gap:4px}
.kit-item:hover{border-color:var(--blue);box-shadow:0 4px 14px rgba(10,108,191,.12);transform:translateY(-2px)}
.kit-name{font-size:16px;font-weight:700;color:var(--blue)}
.kit-role{font-size:13px;color:var(--muted)}

/* ===== 2026-09-01 微交互增强：纯CSS，零图片零请求，几乎不耗流量 ===== */

/* 1. 滚动入场：默认内容完整可见（爬虫/无JS 可读），JS 就绪后才启用"隐藏->淡入" */
.js-anim .reveal{opacity:0;transform:translateY(24px);transition:opacity .62s cubic-bezier(.22,.61,.36,1),transform .62s cubic-bezier(.22,.61,.36,1)}
.js-anim .reveal.is-in{opacity:1;transform:none}
.js-anim .reveal[data-d="1"]{transition-delay:.07s}
.js-anim .reveal[data-d="2"]{transition-delay:.14s}
.js-anim .reveal[data-d="3"]{transition-delay:.21s}
.js-anim .reveal[data-d="4"]{transition-delay:.28s}
.js-anim .reveal[data-d="5"]{transition-delay:.35s}

/* 2. 卡片悬停强化（原为 -3px/0.2s，感知太弱，改为 -6px + 图片微放大） */
.product-card,.case-item,.card,.news-item,.city-card,.knowledge-item{transition:transform .3s cubic-bezier(.22,.61,.36,1),box-shadow .3s ease,border-color .3s ease}
.product-card:hover,.case-item:hover,.card:hover,.news-item:hover,.city-card:hover,.knowledge-item:hover{transform:translateY(-6px);box-shadow:0 14px 30px rgba(10,108,191,.16);border-color:#c9d8e8}
.product-card:hover .card-img,.case-item:hover .case-img,.card:hover .card-img{transform:scale(1.05)}
.card-img,.case-img{transition:transform .45s cubic-bezier(.22,.61,.36,1)}

/* 3. 导航滚动后加深（导航本身已是 sticky，这里只加视觉变化，不动定位） */
.site-header{transition:box-shadow .3s ease,background-color .3s ease}
.site-header.is-stuck{box-shadow:0 3px 16px rgba(10,108,191,.22)}

/* 4. 按钮 / 电话 CTA 微交互 */
.btn,.btn-primary,.btn-ghost,.nav-phone{transition:transform .24s cubic-bezier(.22,.61,.36,1),box-shadow .24s ease,background-color .24s ease}
.btn:hover,.btn-primary:hover,.nav-phone:hover{transform:translateY(-2px)}
.btn-primary:hover{box-shadow:0 10px 22px rgba(240,144,43,.30)}
.btn-ghost:hover{transform:translateY(-2px)}

/* ===== 图片水印：底部居中、淡淡品牌标识 =====
   字体：马善政楷书（Google Fonts 开源字体，SIL OFL 授权，免费可商用）
   仅取「拓维新材料」5 字做子集，3.1 KB，加载一次即永久缓存，几乎不耗流量
   楷书笔画偏细，故字号与不透明度较默认略调高一档，确保"淡但看得清"
   纯前端叠加，不改动服务器原图；无JS/爬虫环境读到的仍是原始HTML，不影响GEO收录 */
@font-face{font-family:'TWMark';src:url('/assets/fonts/wm-mashanzheng.woff2') format('woff2');
  font-display:swap;font-weight:400;font-style:normal}
.wm-box{position:relative;overflow:hidden;line-height:0;vertical-align:top}
.wm-box>img{display:block;max-width:100%}
.wm-box::after{content:"拓维新材料";position:absolute;left:50%;bottom:5px;transform:translateX(-50%);
  font-family:'TWMark',"STKaiti","KaiTi",serif;
  font-size:14px;font-weight:400;color:rgba(255,255,255,.75);letter-spacing:2px;white-space:nowrap;
  text-shadow:0 1px 4px rgba(0,0,0,.6);pointer-events:none;z-index:2;line-height:1.5}
.wm-box.wm-sm::after{font-size:11px;letter-spacing:1px;bottom:3px}
/* 首屏大图（其他页面 hero 背景图）同样叠加水印 */
.hero::after{content:"拓维新材料";position:absolute;left:50%;bottom:12px;transform:translateX(-50%);
  font-family:'TWMark',"STKaiti","KaiTi",serif;
  font-size:15px;font-weight:400;color:rgba(255,255,255,.62);letter-spacing:3px;white-space:nowrap;
  text-shadow:0 1px 4px rgba(0,0,0,.6);pointer-events:none;z-index:3}

/* 5. 尊重系统"减少动画"偏好（无障碍） */
@media (prefers-reduced-motion: reduce){
  .js-anim .reveal{opacity:1!important;transform:none!important;transition:none!important}
  *{animation-duration:.01ms!important;transition-duration:.01ms!important}
}