/* ==========================================================================
   Janus Filtration — 站点级组件样式 / Site Components
   依赖 design-system.css 的令牌
   ========================================================================== */

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:200;
  background:rgba(255,255,255,.90);backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--line);}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px;gap:20px;}
.logo{display:flex;align-items:center;gap:11px;flex:none;}
.logo .mark{width:36px;height:36px;flex:none;border-radius:9px;
  background:linear-gradient(135deg,var(--primary) 0%,var(--accent) 100%);
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(194,65,12,.28);}
.logo .mark svg{width:20px;height:20px;stroke:#fff;fill:none;stroke-width:1.9;
  stroke-linecap:round;stroke-linejoin:round;}
.logo .txt{line-height:1.16;}
.logo .txt b{display:block;font-size:17px;font-weight:700;letter-spacing:.2px;}
.logo .txt span{display:block;font-size:9.5px;letter-spacing:2.4px;color:var(--mute);
  text-transform:uppercase;}
.nav-links{display:flex;gap:30px;align-items:center;}
.nav-links a{font-size:14.5px;color:var(--sub);font-weight:500;position:relative;padding:4px 0;}
.nav-links a:hover{color:var(--primary);}
.nav-links a[aria-current="page"]{color:var(--primary);font-weight:600;}
.nav-links a[aria-current="page"]::after{content:'';position:absolute;left:0;right:0;bottom:-2px;
  height:2px;border-radius:1px;background:linear-gradient(90deg,var(--primary),var(--accent));}
.nav-right{display:flex;align-items:center;gap:14px;flex:none;}

/* 语言切换 */
.lang-sw{display:flex;border:1px solid var(--line);border-radius:7px;overflow:hidden;
  background:var(--bg-3);}
.lang-sw button{background:transparent;border:none;cursor:pointer;padding:7px 12px;
  font-size:12.5px;font-weight:600;color:var(--mute);transition:all .18s;letter-spacing:.4px;}
.lang-sw button:hover{color:var(--primary);}
.lang-sw button.on{background:var(--primary);color:#fff;}
.nav .btn{padding:11px 22px;font-size:14px;}

/* 汉堡 */
.burger{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:8px;
  background:#fff;cursor:pointer;flex-direction:column;gap:5px;align-items:center;justify-content:center;}
.burger i{display:block;width:18px;height:2px;background:var(--ink);border-radius:1px;transition:all .2s;}

/* ---------- 页头横幅（内页）---------- */
.page-hero{padding:76px 0 60px;background:
  linear-gradient(180deg,var(--tint) 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);}
.page-hero h1{font-size:clamp(28px,4.2vw,44px);font-weight:700;letter-spacing:-.6px;line-height:1.24;
  max-width:820px;}
.page-hero p{color:var(--sub);font-size:16.5px;margin-top:16px;max-width:700px;}
.crumb{font-size:12.5px;color:var(--mute);margin-bottom:16px;letter-spacing:.3px;}
.crumb a:hover{color:var(--primary);}
.crumb i{font-style:normal;margin:0 8px;opacity:.6;}

/* ---------- 首页 Hero ---------- */
.hero{position:relative;padding:110px 0 96px;color:#fff;overflow:hidden;
  background:
    radial-gradient(1100px 520px at 82% 8%,rgba(245,158,11,.20) 0%,rgba(245,158,11,0) 62%),
    radial-gradient(900px 460px at 8% 96%,rgba(194,65,12,.26) 0%,rgba(194,65,12,0) 60%),
    linear-gradient(140deg,#141A20 0%,#1F2933 46%,#2A3745 100%);}
.hero::after{content:'';position:absolute;inset:0;opacity:.16;pointer-events:none;
  background-image:
    repeating-linear-gradient(0deg,rgba(255,255,255,.5) 0 1px,transparent 1px 46px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.5) 0 1px,transparent 1px 46px);}
.hero .wrap{position:relative;z-index:1;}
.hero-inner{max-width:840px;}
.hero .tag{display:inline-flex;align-items:center;gap:9px;padding:7px 16px;border-radius:30px;
  background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.22);
  font-size:12.5px;letter-spacing:1.4px;text-transform:uppercase;color:#F3D9C4;margin-bottom:26px;}
.hero .tag::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--accent);}
.hero h1{font-size:clamp(31px,4.9vw,56px);font-weight:700;line-height:1.2;letter-spacing:-1px;}
.hero h1 em{font-style:normal;
  background:linear-gradient(100deg,var(--accent) 0%,#FBBF24 55%,var(--accent) 100%);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.hero .lead{font-size:clamp(15.5px,1.6vw,18px);color:#C7D1DA;margin:24px 0 36px;max-width:700px;
  line-height:1.85;}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;margin-top:72px;
  padding-top:38px;border-top:1px solid rgba(255,255,255,.16);}
.hero-stats .st b{display:block;font-size:clamp(26px,3.4vw,40px);font-weight:700;line-height:1.1;
  color:#fff;letter-spacing:-.5px;}
.hero-stats .st b i{font-style:normal;font-size:.52em;font-weight:600;color:var(--accent);margin-left:3px;}
.hero-stats .st span{display:block;color:#93A2B0;font-size:13px;margin-top:7px;line-height:1.6;}

/* ---------- 通用卡片网格 ---------- */
.grid{display:grid;gap:22px;}
.g2{grid-template-columns:repeat(2,1fr);}
.g3{grid-template-columns:repeat(3,1fr);}
.g4{grid-template-columns:repeat(4,1fr);}

.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 26px;transition:all .25s;}
.card:hover{transform:translateY(-4px);border-color:#E8C9B4;box-shadow:var(--shadow-md);}
.card .ico{width:46px;height:46px;border-radius:11px;background:var(--tint);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;}
.card .ico svg{width:23px;height:23px;stroke:var(--primary);fill:none;stroke-width:1.7;
  stroke-linecap:round;stroke-linejoin:round;}
.card h3{font-size:17.5px;font-weight:700;margin-bottom:10px;line-height:1.45;}
.card p{color:var(--sub);font-size:14.5px;}
.card .more{margin-top:16px;font-size:13.5px;font-weight:600;color:var(--primary);
  display:inline-flex;align-items:center;gap:6px;}
.card:hover .more{gap:10px;}

/* ---------- 产品分类（带标签）---------- */
.cat{border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden;
  transition:all .25s;}
.cat:hover{box-shadow:var(--shadow-md);border-color:#E8C9B4;}
.cat-head{padding:24px 26px 18px;border-bottom:1px solid var(--line);background:var(--bg-3);
  display:flex;align-items:flex-start;gap:14px;}
.cat-head .ico{width:42px;height:42px;border-radius:10px;background:var(--tint);flex:none;
  display:flex;align-items:center;justify-content:center;}
.cat-head .ico svg{width:21px;height:21px;stroke:var(--primary);fill:none;stroke-width:1.7;
  stroke-linecap:round;stroke-linejoin:round;}
.cat-head h3{font-size:17px;font-weight:700;line-height:1.4;}
.cat-head p{color:var(--sub);font-size:13.5px;margin-top:5px;}
.cat-body{padding:8px 26px 24px;}
.cat-body ul{list-style:none;}
.cat-body li{display:flex;gap:10px;align-items:flex-start;padding:9px 0;
  border-bottom:1px dashed var(--line);font-size:14.5px;color:var(--steel-2);}
.cat-body li:last-child{border-bottom:none;}
.cat-body li::before{content:'';flex:none;width:6px;height:6px;border-radius:1px;margin-top:8px;
  background:linear-gradient(135deg,var(--primary),var(--accent));transform:rotate(45deg);}

/* ---------- 规格表 ---------- */
.spec-table{width:100%;border-collapse:collapse;font-size:14.5px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;}
.spec-table th,.spec-table td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line);
  vertical-align:top;}
.spec-table thead th{background:var(--steel);color:#fff;font-weight:600;font-size:13.5px;
  letter-spacing:.4px;border-bottom:none;}
.spec-table tbody tr:nth-child(even){background:var(--bg-3);}
.spec-table tbody tr:last-child td{border-bottom:none;}
.spec-table td:first-child{font-weight:600;color:var(--steel);white-space:nowrap;width:34%;}

/* ---------- 行业方案（图文交替）---------- */
.ind{display:grid;grid-template-columns:0.85fr 1.15fr;gap:48px;align-items:center;
  padding:40px 0;border-bottom:1px solid var(--line);}
.ind:last-of-type{border-bottom:none;}
.ind.rev .ind-img{order:2;}
.ind-img{position:relative;border-radius:var(--radius-lg);overflow:hidden;
  min-height:270px;background:var(--steel);}
.ind-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  transition:transform .5s ease;}
.ind:hover .ind-img img{transform:scale(1.04);}
.ind-img .veil{position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(20,26,32,.05) 40%,rgba(20,26,32,.72) 100%);}
.ind-img .cap{position:absolute;left:0;right:0;bottom:0;z-index:1;padding:18px 22px;
  display:flex;align-items:flex-end;justify-content:space-between;gap:12px;}
.ind-img .cap span{color:#E8EDF2;font-size:12.5px;letter-spacing:1.6px;
  text-transform:uppercase;font-weight:600;}
.ind-img .cap em{font-style:normal;color:#C9D4DE;font-size:11.5px;letter-spacing:.4px;}
.ind-body h3{font-size:22px;font-weight:700;margin-bottom:14px;line-height:1.4;}
.ind-body>p{color:var(--sub);font-size:15px;margin-bottom:18px;}
.ind-body ul{list-style:none;display:grid;gap:10px;}
.ind-body li{display:flex;gap:11px;font-size:14.5px;color:var(--steel-2);}
.ind-body li::before{content:'';flex:none;width:16px;height:16px;border-radius:50%;
  margin-top:5px;background:var(--tint);
  background-image:linear-gradient(135deg,var(--primary),var(--accent));
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M5 13l4 4L19 7' fill='none' stroke='%23000' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/11px no-repeat;
  mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M5 13l4 4L19 7' fill='none' stroke='%23000' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/11px no-repeat;}
.ind-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:20px;}
.ind-tags span{padding:5px 13px;border-radius:20px;background:var(--tint);color:var(--primary-dk);
  font-size:12.5px;font-weight:600;border:1px solid #F3D7C2;}

/* ---------- 能力/优势列表 ---------- */
.ability{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;}
.ability-body p{color:var(--sub);font-size:15.5px;}
.ability-body p+p{margin-top:14px;}
.ab-list{list-style:none;display:grid;gap:14px;}
.ab-list li{display:flex;gap:14px;padding:18px 20px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);transition:all .22s;}
.ab-list li:hover{border-color:#E8C9B4;box-shadow:var(--shadow);}
.ab-list .n{flex:none;width:30px;height:30px;border-radius:8px;
  background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;
  font-size:13.5px;font-weight:700;display:flex;align-items:center;justify-content:center;}
.ab-list b{display:block;font-size:15.5px;margin-bottom:4px;}
.ab-list span{color:var(--sub);font-size:14px;}

/* ---------- 数据条 ---------- */
.figures{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.fig{text-align:center;padding:30px 18px;border-radius:var(--radius);background:#fff;
  border:1px solid var(--line);}
.fig b{display:block;font-size:clamp(24px,3vw,34px);font-weight:700;color:var(--primary);
  line-height:1.15;letter-spacing:-.5px;}
.fig span{display:block;color:var(--sub);font-size:13.5px;margin-top:9px;line-height:1.65;}

/* ---------- 关于页：信息表 ---------- */
.facts{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:8px 26px;
  box-shadow:var(--shadow);}
.fact{display:flex;justify-content:space-between;gap:20px;padding:15px 0;
  border-bottom:1px solid var(--line);}
.fact:last-child{border-bottom:none;}
.fact dt{color:var(--sub);font-size:14px;flex:none;}
.fact dd{text-align:right;font-weight:600;font-size:14.5px;min-width:0;overflow-wrap:anywhere;}

/* ---------- 时间轴 ---------- */
.tl{position:relative;padding-left:34px;}
.tl::before{content:'';position:absolute;left:7px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(180deg,var(--primary),var(--accent),var(--line));}
.tl-item{position:relative;padding-bottom:30px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{content:'';position:absolute;left:-33px;top:5px;width:16px;height:16px;
  border-radius:50%;background:#fff;border:3px solid var(--primary);box-shadow:0 0 0 4px var(--tint);}
.tl-item b{display:block;font-size:17px;color:var(--primary);font-weight:700;margin-bottom:6px;
  letter-spacing:.3px;}
.tl-item p{color:var(--sub);font-size:14.5px;}

/* ---------- 询盘 CTA 区块 ---------- */
.cta-band{background:linear-gradient(135deg,var(--primary) 0%,#D97706 55%,var(--accent) 100%);
  color:#fff;padding:64px 0;}
.cta-band .cta-in{display:grid;grid-template-columns:1.3fr 1fr;gap:44px;align-items:center;}
.cta-band h2{font-size:clamp(24px,3.2vw,34px);font-weight:700;line-height:1.32;letter-spacing:-.4px;}
.cta-band p{margin-top:16px;color:rgba(255,255,255,.92);font-size:15.5px;max-width:620px;}
.cta-actions{display:flex;flex-direction:column;gap:12px;}
.cta-actions .btn{justify-content:center;}
.cta-actions .btn-w{background:#fff;color:var(--primary);}
.cta-actions .btn-w:hover{background:#FFF7F0;transform:translateY(-2px);}

/* ---------- 联系页 ---------- */
.ct-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.ct-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;
  text-align:center;}
.ct-card .ico{width:50px;height:50px;border-radius:13px;background:var(--tint);margin:0 auto 16px;
  display:flex;align-items:center;justify-content:center;}
.ct-card .ico svg{width:24px;height:24px;stroke:var(--primary);fill:none;stroke-width:1.7;
  stroke-linecap:round;stroke-linejoin:round;}
.ct-card b{display:block;font-size:16px;margin-bottom:9px;}
.ct-card p{color:var(--sub);font-size:14.5px;line-height:1.9;overflow-wrap:anywhere;}
.ct-main{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;}
.map-box{border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);
  background:var(--bg-2);min-height:340px;display:flex;align-items:center;justify-content:center;
  text-align:center;padding:30px;}
.map-box .inner{max-width:320px;}
.map-box svg{width:44px;height:44px;stroke:var(--primary);fill:none;stroke-width:1.5;
  stroke-linecap:round;stroke-linejoin:round;margin:0 auto 16px;}
.map-box b{display:block;font-size:15.5px;margin-bottom:8px;}
.map-box p{color:var(--sub);font-size:13.5px;line-height:1.85;}

/* ---------- 表单提示 ---------- */
.note{background:var(--tint);border:1px solid #F3D7C2;border-radius:var(--radius);
  padding:18px 22px;font-size:13.5px;color:var(--primary-dk);line-height:1.8;}
.form-ok{display:none;margin-top:16px;padding:14px 18px;border-radius:9px;
  background:#ECFDF5;border:1px solid #A7F3D0;color:#065F46;font-size:14px;}
.form-ok.show{display:block;}

/* ---------- 产品实拍图库 ---------- */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.g-item{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  background:var(--bg-2);aspect-ratio:4/3;transition:all .25s;}
.g-item img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease;}
.g-item:hover{box-shadow:var(--shadow-md);border-color:#E8C9B4;}
.g-item:hover img{transform:scale(1.05);}
.g-item figcaption{position:absolute;left:0;right:0;bottom:0;padding:26px 16px 12px;
  background:linear-gradient(180deg,transparent,rgba(20,26,32,.78));
  color:#fff;font-size:13px;font-weight:600;letter-spacing:.3px;}

/* ---------- 页脚（覆盖 design-system 精调）---------- */
footer{padding:56px 0 28px;}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:22px;}
}
@media (max-width:900px){
  .nav-links{position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;
    align-items:flex-start;gap:0;padding:10px 24px 20px;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-md);display:none;}
  .nav-links.open{display:flex;}
  .nav-links a{width:100%;padding:13px 0;border-bottom:1px solid var(--line);font-size:15px;}
  .nav-links a:last-child{border-bottom:none;}
  .burger{display:flex;}
  .nav .btn{display:none;}
  .g3,.g4{grid-template-columns:repeat(2,1fr);}
  .gallery{grid-template-columns:repeat(2,1fr);}
  .ind,.ability,.ct-main,.cta-band .cta-in{grid-template-columns:1fr;}
  .ind.rev .ind-img{order:0;}
  .ct-cards{grid-template-columns:1fr;}
  .figures{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:760px){
  .nav{height:64px;}
  .nav-links{top:64px;}
  .logo .mark{width:33px;height:33px;}
  .logo .txt b{font-size:15.5px;}
  .logo .txt span{font-size:9px;letter-spacing:1.8px;}
  .hero{padding:76px 0 66px;}
  .hero-stats{grid-template-columns:1fr 1fr;gap:20px;margin-top:48px;padding-top:30px;}
  .g2,.g3,.g4{grid-template-columns:1fr;}
  .gallery{grid-template-columns:1fr;}
  .figures{grid-template-columns:1fr 1fr;}
  .fact{flex-direction:column;gap:5px;}
  .fact dd{text-align:left;}
  .spec-table th,.spec-table td{padding:12px 14px;font-size:13.5px;}
  .spec-table td:first-child{white-space:normal;width:auto;}
  .cta-band{padding:48px 0;}
  .lang-sw button{padding:6px 10px;font-size:12px;}
}
@media (max-width:420px){
  .hero-stats{grid-template-columns:1fr;}
  .figures{grid-template-columns:1fr;}
}

/* ---- 产品区块实拍图条 / Section photo strips ---- */
.sec-photos{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:26px 0 8px;}
.sp-item{margin:0;border-radius:10px;overflow:hidden;background:#fff;border:1px solid var(--line,#e5e7eb);box-shadow:0 1px 3px rgba(31,41,51,.06);}
.sp-item img{display:block;width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .5s ease;}
.sp-item:hover img{transform:scale(1.05);}
.sp-item figcaption{padding:8px 12px;font-size:13px;color:#4b5563;border-top:1px solid #f0f1f3;}
@media (max-width:760px){.sec-photos{grid-template-columns:repeat(2,1fr);gap:10px;margin-top:18px;}}
@media (max-width:420px){.sec-photos{grid-template-columns:1fr;}}