/* ========== 设计系统 ========== */
:root{
  --c-ink:#0A2540;
  --c-blue:#1565C0;
  --c-blue-2:#0E5BAA;
  --c-cyan:#00B4D8;
  --c-cyan-2:#22D3EE;
  --c-orange:#FF6B35;
  --c-orange-2:#F25C20;
  --c-bg:#FFFFFF;
  --c-bg-2:#F6F9FC;
  --c-bg-3:#EFF4FA;
  --c-line:#E2E8F0;
  --c-line-2:#CBD5E1;
  --c-text:#1E293B;
  --c-text-2:#475569;
  --c-text-3:#64748B;
  --c-text-4:#94A3B8;
  --c-success:#10B981;
  --shadow-sm:0 1px 2px rgba(10,37,64,.04), 0 1px 3px rgba(10,37,64,.06);
  --shadow-md:0 4px 12px rgba(10,37,64,.06), 0 8px 24px rgba(10,37,64,.06);
  --shadow-lg:0 16px 48px rgba(10,37,64,.12);
  --radius-sm:4px;
  --radius-md:8px;
  --radius-lg:16px;
  --radius-xl:24px;
  --container:1280px;
  --nav-h:80px;
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
  --font-mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font);
  font-size:15px;
  line-height:1.7;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .25s var(--ease)}
a:hover{color:var(--c-blue)}
button{font-family:inherit;cursor:pointer;border:0;background:transparent}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{font-weight:800;line-height:1.25;color:var(--c-ink);letter-spacing:-.01em}
h1{font-size:clamp(32px,4.6vw,56px);font-weight:900;letter-spacing:-.02em}
h2{font-size:clamp(26px,3vw,38px)}
h3{font-size:clamp(20px,1.6vw,24px)}
h4{font-size:18px}
p{color:var(--c-text-2)}

/* ========== 通用布局 ========== */
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.row{display:flex;flex-wrap:wrap;gap:24px}
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-6{grid-template-columns:repeat(6,1fr)}
.section{padding:96px 0;position:relative}
.section-sm{padding:64px 0}
.section-tight{padding:48px 0}
.section-title{text-align:center;margin-bottom:64px;position:relative}
.section-title .eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.3em;
  color:var(--c-blue);
  text-transform:uppercase;
  font-weight:700;
  margin-bottom:16px;
  position:relative;
  padding-left:48px;
}
.section-title .eyebrow::before{
  content:"";
  position:absolute;left:0;top:50%;
  width:36px;height:2px;background:var(--c-blue);
  transform:translateY(-50%);
}
.section-title h2{margin-bottom:16px}
.section-title .lead{color:var(--c-text-3);max-width:720px;margin:0 auto}
.section-title.left{text-align:left}
.section-title.left .lead{margin:0}

/* ========== 按钮 ========== */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 28px;
  font-size:15px;font-weight:600;
  border-radius:var(--radius-sm);
  transition:all .3s var(--ease);
  white-space:nowrap;
  border:1px solid transparent;
  letter-spacing:.02em;
}
.btn-primary{background:var(--c-blue);color:#fff}
.btn-primary:hover{background:var(--c-blue-2);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-orange{background:var(--c-orange);color:#fff}
.btn-orange:hover{background:var(--c-orange-2);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.btn-line{background:transparent;color:var(--c-blue);border-color:var(--c-blue)}
.btn-line:hover{background:var(--c-blue);color:#fff}
.btn-sm{padding:10px 18px;font-size:13px}
.btn-lg{padding:18px 36px;font-size:16px}

/* ========== 顶部导航 ========== */
.topbar{
  position:fixed;inset:0 0 auto 0;z-index:100;
  height:var(--nav-h);
  display:flex;align-items:center;
  background:linear-gradient(180deg,rgba(10,37,64,.7) 0%,rgba(10,37,64,0) 100%);
  transition:background .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease);
  border-bottom:1px solid transparent;
}
.topbar.solid{
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:0 1px 0 rgba(10,37,64,.06),0 6px 20px rgba(10,37,64,.04);
  border-bottom-color:rgba(10,37,64,.06);
}
.topbar.solid .nav-link,
.topbar.solid .nav-logo-text,
.topbar.solid .nav-logo-sub,
.topbar.solid .nav-tel-text{color:var(--c-ink)}
.topbar.solid .nav-link:hover,
.topbar.solid .nav-link.active{color:var(--c-blue)}
.topbar.solid .nav-link::after{background:var(--c-blue)}
.topbar.solid .nav-divider{background:linear-gradient(180deg,transparent,var(--c-line-2),transparent)}
.topbar.solid .nav-tel-cta{background:linear-gradient(135deg,var(--c-blue) 0%,var(--c-blue-2) 100%);color:#fff;box-shadow:0 6px 16px rgba(21,101,192,.25)}
.topbar.solid .nav-tel-cta:hover{box-shadow:0 8px 20px rgba(21,101,192,.35);transform:translateY(-1px)}
.topbar.solid .nav-logo-mark{box-shadow:0 4px 12px rgba(21,101,192,.25)}
.topbar-inner{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;
  gap:32px;
}

/* ===== LOGO ===== */
.nav-logo{
  display:flex;align-items:center;gap:14px;line-height:1;
  flex:none;min-width:0;
}
.nav-logo-mark{
  width:44px;height:44px;border-radius:10px;
  background:linear-gradient(135deg,var(--c-cyan) 0%,var(--c-blue) 100%);
  display:grid;place-items:center;color:#fff;font-weight:900;font-size:22px;
  box-shadow:0 6px 18px rgba(21,101,192,.35);
  letter-spacing:-.05em;
  position:relative;flex:none;
}
.nav-logo-mark::after{
  content:"";position:absolute;inset:auto 0 -3px 0;height:2px;
  background:linear-gradient(90deg,var(--c-cyan),transparent);
  border-radius:2px;opacity:.6;
}
.nav-logo-text-group{display:flex;flex-direction:column;gap:2px;min-width:0}
.nav-logo-text{
  font-size:20px;font-weight:900;color:#fff;letter-spacing:.06em;
  white-space:nowrap;line-height:1.1;
  text-shadow:0 1px 2px rgba(0,0,0,.1);
}
.nav-logo-sub{
  font-size:11px;font-weight:500;color:rgba(255,255,255,.78);letter-spacing:.18em;
  white-space:nowrap;line-height:1.2;
  text-transform:uppercase;
}
.nav-divider{
  width:1px;height:32px;
  background:linear-gradient(180deg,transparent,rgba(255,255,255,.45),transparent);
  margin:0 4px;flex:none;
}

/* ===== 菜单 ===== */
.nav-list{
  display:flex;align-items:center;gap:4px;flex:1;justify-content:center;
  min-width:0;
}
.nav-link{
  position:relative;display:block;padding:12px 18px;
  font-size:15.5px;font-weight:600;color:#fff;
  letter-spacing:.04em;
  border-radius:8px;
  transition:color .25s var(--ease),background-color .25s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:4px;
  width:0;height:2px;background:#fff;
  transform:translateX(-50%);
  transition:width .3s var(--ease);
  border-radius:2px;
}
.nav-link:hover,.nav-link.active{color:#fff;background:rgba(255,255,255,.08)}
.nav-link:hover::after,.nav-link.active::after{width:20px}
.nav-link.active{background:rgba(255,255,255,.14)}

/* ===== 右侧电话 CTA ===== */
.nav-right{display:flex;align-items:center;gap:16px;flex:none}
.nav-tel-cta{
  display:flex;align-items:center;gap:10px;
  padding:10px 18px;
  border-radius:999px;
  background:rgba(255,255,255,.14);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
  border:1px solid rgba(255,255,255,.25);
  color:#fff;font-weight:700;
  transition:all .3s var(--ease);
  white-space:nowrap;
}
.nav-tel-cta:hover{
  background:rgba(255,255,255,.22);
  border-color:rgba(255,255,255,.4);
  transform:translateY(-1px);
}
.nav-tel-cta svg{flex:none}
.nav-tel-text{
  display:flex;flex-direction:column;gap:0;line-height:1.15;
  font-size:13px;font-weight:600;color:#fff;letter-spacing:.02em;
}
.nav-tel-text strong{font-size:16px;font-weight:800;letter-spacing:.03em}

.nav-tel{display:none}/* 兼容保留 */
.nav-burger{display:none;width:40px;height:40px;align-items:center;justify-content:center;color:#fff;border-radius:8px}
.nav-burger:hover{background:rgba(255,255,255,.1)}
.nav-burger span{position:relative;width:22px;height:2px;background:currentColor;display:block;border-radius:2px}
.nav-burger span::before,.nav-burger span::after{content:"";position:absolute;left:0;width:22px;height:2px;background:currentColor;border-radius:2px}
.nav-burger span::before{top:-7px}
.nav-burger span::after{top:7px}

@media (max-width:1280px){
  .nav-list{gap:0}
  .nav-link{padding:12px 14px;font-size:15px}
  .nav-logo-text{font-size:19px}
  .nav-logo-sub{font-size:10.5px;letter-spacing:.14em}
  .nav-tel-cta{padding:9px 14px}
  .nav-tel-text strong{font-size:15px}
}
@media (max-width:1024px){
  .nav-list{position:fixed;inset:var(--nav-h) 0 auto 0;background:#fff;flex-direction:column;padding:16px 24px;gap:0;box-shadow:var(--shadow-md);transform:translateY(-12px);opacity:0;pointer-events:none;transition:all .3s var(--ease);align-items:stretch}
  .nav-list.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav-list .nav-link{color:var(--c-ink);padding:14px 12px;border-bottom:1px solid var(--c-line);width:100%;text-align:left;border-radius:0;background:transparent!important}
  .nav-list .nav-link::after{display:none}
  .nav-burger{display:flex}
  .nav-tel-cta{display:none}
  .topbar.solid .nav-burger{color:var(--c-ink);background:transparent}
  .nav-divider{display:none}
  .nav-logo-text{font-size:18px;text-shadow:none}
  .nav-logo-sub{font-size:10px}
}

/* ========== 顶部公告条 ========== */
.announce{
  background:var(--c-ink);color:rgba(255,255,255,.85);
  font-size:12px;letter-spacing:.05em;
  padding:8px 0;
  display:flex;align-items:center;gap:16px;
}
.announce .dot{
  width:6px;height:6px;border-radius:50%;background:var(--c-cyan);
  box-shadow:0 0 0 4px rgba(34,211,238,.18);
  flex:none;
}
.announce .marquee{flex:1 1 0;min-width:0;width:0;overflow:hidden;white-space:nowrap;max-width:100%}
.announce .marquee span{display:inline-block;animation:marquee 30s linear infinite;padding-left:100%}
@keyframes marquee{0%{transform:translateX(0)}100%{transform:translateX(-100%)}}

/* ========== Hero/Banner 集成 ========== */
.hero{
  position:relative;
  min-height:100vh;
  color:#fff;
  overflow:hidden;
  isolation:isolate;
}
.hero-bg{
  position:absolute;inset:0;z-index:-2;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(0,180,216,.25) 0%, transparent 60%),
    radial-gradient(ellipse 100% 80% at 0% 100%, rgba(21,101,192,.4) 0%, transparent 50%),
    linear-gradient(135deg,#04142B 0%,#0A2540 50%,#0E3A6E 100%);
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 60% 80% at 50% 40%,#000 30%,transparent 80%);
}
.hero-slides{position:absolute;inset:0;z-index:-1;overflow:hidden}
.hero-slide{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  opacity:0;transition:opacity 1.2s var(--ease);
}
.hero-slide::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(4,20,43,.85) 0%,rgba(10,37,64,.55) 50%,rgba(14,90,170,.3) 100%);
}
.hero-slide.active{opacity:1}
.hero-waves{
  position:absolute;left:0;right:0;bottom:-1px;height:120px;z-index:1;pointer-events:none;
}
.hero-inner{
  position:relative;z-index:2;
  min-height:100vh;
  display:flex;align-items:center;
  padding:calc(var(--nav-h) + 64px) 0 120px;
}
.hero-grid{
  display:grid;grid-template-columns:1.1fr .9fr;gap:64px;align-items:center;width:100%;
}
.hero-content{max-width:640px}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:12px;
  font-size:12px;letter-spacing:.4em;text-transform:uppercase;
  color:var(--c-cyan-2);
  font-weight:700;
  margin-bottom:24px;
  padding:8px 16px;
  background:rgba(0,180,216,.08);
  border:1px solid rgba(0,180,216,.25);
  border-radius:40px;
}
.hero-eyebrow::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--c-cyan);
  box-shadow:0 0 0 4px rgba(0,180,216,.25);
}
.hero-tags{
  display:flex;flex-wrap:wrap;gap:10px;
  margin-bottom:32px;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 14px;
  font-size:13px;font-weight:600;
  color:#fff;
  background:rgba(0,180,216,.12);
  border:1px solid rgba(0,180,216,.35);
  border-radius:40px;
  letter-spacing:.04em;
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
  transition:all .3s var(--ease);
}
.hero-tag svg{flex:none;color:var(--c-cyan-2)}
.hero-tag:hover{
  background:rgba(0,180,216,.25);
  border-color:rgba(0,180,216,.6);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:0 6px 16px rgba(0,180,216,.2);
}
@media (max-width:768px){
  .hero-tags{gap:8px;margin-bottom:24px}
  .hero-tag{font-size:12px;padding:7px 12px}
}
.hero h1{
  color:#fff;font-size:clamp(36px,5.4vw,64px);
  line-height:1.1;letter-spacing:-.025em;font-weight:900;
  margin-bottom:24px;
}
.hero h1 .accent{
  background:linear-gradient(120deg,var(--c-cyan-2) 0%,#fff 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{
  font-size:clamp(15px,1.3vw,18px);
  color:rgba(255,255,255,.78);
  line-height:1.8;
  margin-bottom:40px;
  max-width:560px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:48px}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
  padding-top:32px;border-top:1px solid rgba(255,255,255,.12);
  max-width:560px;
}
.hero-stat .num{
  font-size:clamp(28px,2.6vw,40px);font-weight:900;
  font-family:var(--font-mono);
  background:linear-gradient(180deg,#fff 0%,rgba(255,255,255,.7) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  line-height:1;
  margin-bottom:8px;
}
.hero-stat .lbl{font-size:12px;color:rgba(255,255,255,.6);letter-spacing:.1em}

.hero-visual{
  position:relative;
  aspect-ratio:1/1.05;
  border-radius:var(--radius-xl);
  overflow:hidden;
  border:1px solid rgba(255,255,255,.1);
  background:rgba(255,255,255,.04);
  backdrop-filter:blur(8px);
  box-shadow:0 30px 80px rgba(0,0,0,.4);
}
.hero-visual::before{
  content:"";position:absolute;inset:0;
  background:url("https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=industrial%20water%20treatment%20plant%20stainless%20steel%20RO%20reverse%20osmosis%20system%20in%20modern%20factory%20soft%20cinematic%20light%20ultra%20realistic%20engineering%20photography&image_size=portrait_4_3") center/cover;
  opacity:.85;
}
.hero-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 50%,rgba(4,20,43,.7) 100%);
}
.hero-visual .visual-meta{
  position:absolute;left:24px;right:24px;bottom:24px;
  display:flex;align-items:flex-end;justify-content:space-between;gap:16px;z-index:1;
}
.hero-visual .visual-tag{
  font-size:11px;letter-spacing:.3em;color:var(--c-cyan-2);text-transform:uppercase;font-weight:700;
}
.hero-visual .visual-title{
  font-size:16px;font-weight:600;color:#fff;line-height:1.4;margin-top:6px;max-width:240px;
}
.hero-visual .visual-stat{
  background:rgba(255,255,255,.95);color:var(--c-ink);
  padding:12px 18px;border-radius:var(--radius-md);min-width:120px;
}
.hero-visual .visual-stat .v{font-size:22px;font-weight:900;font-family:var(--font-mono);line-height:1;color:var(--c-blue)}
.hero-visual .visual-stat .k{font-size:11px;color:var(--c-text-3);margin-top:4px;letter-spacing:.05em}

.hero-decor{
  position:absolute;z-index:1;pointer-events:none;color:rgba(255,255,255,.18);
}
.hero-decor.d1{top:30%;left:5%;width:120px}
.hero-decor.d2{top:55%;right:8%;width:80px}
.hero-decor svg{width:100%;height:auto}

.hero-thumbs{
  position:absolute;right:32px;top:50%;transform:translateY(-50%);z-index:3;
  display:flex;flex-direction:column;gap:12px;
}
.hero-thumb{
  width:64px;height:48px;border-radius:6px;
  background-size:cover;background-position:center;
  border:2px solid transparent;cursor:pointer;opacity:.5;
  transition:all .3s var(--ease);
}
.hero-thumb.active{opacity:1;border-color:var(--c-cyan-2);transform:scale(1.05)}
.hero-arrow{
  position:absolute;top:50%;transform:translateY(-50%);z-index:3;
  width:48px;height:48px;border-radius:50%;
  display:grid;place-items:center;
  background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.2);
  backdrop-filter:blur(8px);
  transition:all .3s var(--ease);
}
.hero-arrow:hover{background:rgba(255,255,255,.2);color:#fff}
.hero-arrow.prev{left:24px}
.hero-arrow.next{right:24px}

@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:48px}
  .hero-visual{aspect-ratio:16/10;max-width:560px;margin:0 auto;width:100%}
  .hero-thumbs,.hero-arrow{display:none}
}
@media (max-width:640px){
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:20px}
  .hero-cta .btn{width:100%;justify-content:center}
}

/* ========== Sub-Banner (子页面头部) ========== */
.subhero{
  position:relative;
  padding:calc(var(--nav-h) + 96px) 0 80px;
  color:#fff;
  background:
    linear-gradient(120deg,rgba(4,20,43,.85) 0%,rgba(10,37,64,.6) 100%),
    url("https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=water%20treatment%20facility%20engineering%20macro%20detail%20stainless%20steel%20pipes%20blue%20water%20ultra%20realistic%20industrial%20photography&image_size=landscape_16_9") center/cover;
  overflow:hidden;
}
.subhero::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:48px 48px;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 50%,#000 30%,transparent 80%);
}
.subhero-inner{position:relative;z-index:2}
.subhero h1{color:#fff;font-size:clamp(32px,4.4vw,52px);max-width:880px;margin-bottom:20px}
.subhero .lead{color:rgba(255,255,255,.78);max-width:680px;font-size:17px}
.breadcrumb{
  display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.6);margin-bottom:24px;
}
.breadcrumb a{color:rgba(255,255,255,.7)}
.breadcrumb a:hover{color:#fff}
.breadcrumb svg{opacity:.6}
.breadcrumb .current{color:var(--c-cyan-2)}

/* ========== 产品分类矩阵 ========== */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media (max-width:1024px){.cat-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.cat-grid{grid-template-columns:1fr}}
.cat-card{
  position:relative;display:block;overflow:hidden;
  border-radius:var(--radius-lg);
  background:#fff;border:1px solid var(--c-line);
  transition:all .4s var(--ease);
}
.cat-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.cat-card .pic{
  position:relative;aspect-ratio:16/10;overflow:hidden;
  background:linear-gradient(135deg,var(--c-bg-3) 0%,var(--c-bg-2) 100%);
}
.cat-card .pic img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .8s var(--ease);
}
.cat-card:hover .pic img{transform:scale(1.06)}
.cat-card .pic::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(10,37,64,.65) 100%);
}
.cat-card .badge{
  position:absolute;top:16px;left:16px;z-index:1;
  font-size:11px;letter-spacing:.2em;font-weight:700;
  padding:6px 12px;border-radius:40px;
  background:rgba(0,180,216,.9);color:#fff;
  text-transform:uppercase;
}
.cat-card .body{padding:28px}
.cat-card h3{margin-bottom:12px;display:flex;align-items:center;gap:12px}
.cat-card h3 .num{font-family:var(--font-mono);font-size:14px;color:var(--c-cyan);font-weight:700}
.cat-card .body p{font-size:14px;color:var(--c-text-3);margin-bottom:20px;min-height:48px}
.cat-card .more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:var(--c-blue);
  letter-spacing:.05em;
}
.cat-card .more svg{transition:transform .3s var(--ease)}
.cat-card:hover .more svg{transform:translateX(4px)}

/* ========== 数据区 ========== */
.stats-band{
  background:
    linear-gradient(135deg,rgba(10,37,64,.95) 0%,rgba(14,90,170,.9) 100%),
    url("https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=water%20treatment%20plant%20night%20industrial%20lights%20stainless%20steel%20tank%20blue%20cinematic&image_size=landscape_16_9") center/cover;
  color:#fff;padding:80px 0;position:relative;overflow:hidden;
}
.stats-band::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:48px 48px;
}
.stats-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
}
@media (max-width:768px){.stats-grid{grid-template-columns:repeat(2,1fr)}}
.stat-item{text-align:center;padding:0 12px;position:relative}
.stat-item:not(:last-child)::after{
  content:"";position:absolute;right:-12px;top:20%;bottom:20%;
  width:1px;background:rgba(255,255,255,.12);
}
@media (max-width:768px){.stat-item:nth-child(2)::after{display:none}}
.stat-item .num{
  font-size:clamp(40px,4vw,56px);font-weight:900;
  font-family:var(--font-mono);line-height:1;
  background:linear-gradient(180deg,#fff 0%,var(--c-cyan-2) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  margin-bottom:8px;letter-spacing:-.02em;
}
.stat-item .lbl{font-size:14px;color:rgba(255,255,255,.78);letter-spacing:.1em}
.stat-item .sub{font-size:12px;color:rgba(255,255,255,.5);margin-top:6px}

/* ========== 优势区 ========== */
.advantage-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--c-line);border-radius:var(--radius-lg);overflow:hidden;background:#fff}
.adv-item{padding:40px 32px;position:relative;border-right:1px solid var(--c-line);border-bottom:1px solid var(--c-line);transition:all .35s var(--ease)}
.adv-item:hover{background:var(--c-bg-2)}
.adv-item:nth-child(4n){border-right:0}
.adv-item:nth-last-child(-n+4){border-bottom:0}
.adv-item .ic{
  width:56px;height:56px;border-radius:var(--radius-md);
  display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(0,180,216,.12) 0%,rgba(21,101,192,.12) 100%);
  color:var(--c-blue);
  margin-bottom:20px;
}
.adv-item h4{margin-bottom:12px;font-size:18px}
.adv-item p{font-size:14px;color:var(--c-text-3)}
@media (max-width:1024px){
  .advantage-grid{grid-template-columns:repeat(2,1fr)}
  .adv-item{width:50%}
  .adv-item:nth-child(2n){border-right:0}
  .adv-item:nth-child(4n){border-right:0}
  .adv-item:nth-child(odd){border-right:1px solid var(--c-line)}
  .adv-item:nth-last-child(-n+4){border-bottom:1px solid var(--c-line)}
  .adv-item:nth-last-child(-n+2){border-bottom:0}
}
@media (max-width:560px){
  .advantage-grid{grid-template-columns:repeat(2,1fr);border-radius:var(--radius-md)}
  .adv-item{width:auto;padding:24px 18px}
  .adv-item .ic{width:44px;height:44px;margin-bottom:14px}
  .adv-item .ic svg{width:22px;height:22px}
  .adv-item h4{font-size:15px;margin-bottom:8px;line-height:1.4}
  .adv-item p{font-size:12.5px;line-height:1.65}
}

/* ========== 行业方案 ========== */
.industry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media (max-width:1024px){.industry-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.industry-grid{grid-template-columns:1fr}}
.industry-card{
  position:relative;display:block;overflow:hidden;
  aspect-ratio:4/5;border-radius:var(--radius-lg);
  background:#000;color:#fff;
}
.industry-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.7;transition:transform .8s var(--ease),opacity .4s var(--ease)}
.industry-card:hover img{transform:scale(1.08);opacity:.55}
.industry-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 30%,rgba(4,20,43,.9) 100%);
}
.industry-card .body{
  position:absolute;left:0;right:0;bottom:0;z-index:1;padding:24px;
}
.industry-card h4{color:#fff;font-size:18px;margin-bottom:6px}
.industry-card .meta{font-size:12px;color:rgba(255,255,255,.7);letter-spacing:.1em}

/* ========== 案例 ========== */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media (max-width:1024px){.case-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.case-grid{grid-template-columns:1fr}}
.case-card{
  display:block;border-radius:var(--radius-lg);overflow:hidden;
  background:#fff;border:1px solid var(--c-line);
  transition:all .35s var(--ease);
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:transparent}
.case-card .pic{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--c-bg-3)}
.case-card .pic img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.case-card:hover .pic img{transform:scale(1.06)}
.case-card .tag{
  position:absolute;top:14px;left:14px;z-index:1;
  background:rgba(21,101,192,.92);color:#fff;
  font-size:11px;letter-spacing:.1em;font-weight:600;
  padding:5px 10px;border-radius:3px;
}
.case-card .body{padding:22px 24px 24px}
.case-card h4{font-size:16px;margin-bottom:8px;line-height:1.4}
.case-card .body p{font-size:13px;color:var(--c-text-3);margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.case-card .meta{display:flex;align-items:center;gap:12px;font-size:12px;color:var(--c-text-4)}
.case-card .meta svg{color:var(--c-cyan)}

/* ========== FAQ ========== */
.faq-list{max-width:920px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-md);
  overflow:hidden;transition:all .25s var(--ease);
}
.faq-item:hover{border-color:var(--c-line-2)}
.faq-item.open{border-color:var(--c-blue);box-shadow:var(--shadow-sm)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:20px 24px;text-align:left;
  font-size:15px;font-weight:600;color:var(--c-ink);
}
.faq-q .q-tag{
  flex:none;width:28px;height:28px;border-radius:6px;
  background:var(--c-bg-3);color:var(--c-blue);
  display:grid;place-items:center;font-weight:800;font-size:13px;
  margin-right:4px;transition:all .3s var(--ease);
}
.faq-item.open .q-tag{background:var(--c-blue);color:#fff}
.faq-q .ic{
  flex:none;width:24px;height:24px;border-radius:50%;
  background:var(--c-bg-2);color:var(--c-text-2);
  display:grid;place-items:center;
  transition:all .3s var(--ease);
}
.faq-item.open .faq-q .ic{background:var(--c-blue);color:#fff;transform:rotate(45deg)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .4s var(--ease);
}
.faq-a-inner{padding:0 24px 24px 64px;color:var(--c-text-2);font-size:14.5px;line-height:1.85}

/* ========== 联系信息卡片 ========== */
.contact-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:48px}
@media (max-width:1024px){.contact-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.contact-grid{grid-template-columns:1fr}}
.contact-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-md);
  padding:28px 24px;transition:all .3s var(--ease);position:relative;overflow:hidden;
}
.contact-card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--c-blue);
  transform:scaleY(0);transform-origin:bottom;transition:transform .35s var(--ease);
}
.contact-card:hover{box-shadow:var(--shadow-md);border-color:transparent}
.contact-card:hover::before{transform:scaleY(1);transform-origin:top}
.contact-card .ic{
  width:48px;height:48px;border-radius:10px;
  background:linear-gradient(135deg,var(--c-cyan) 0%,var(--c-blue) 100%);
  color:#fff;display:grid;place-items:center;margin-bottom:16px;
}
.contact-card .lbl{font-size:12px;color:var(--c-text-3);letter-spacing:.15em;text-transform:uppercase;margin-bottom:8px}
.contact-card .val{font-size:18px;font-weight:700;color:var(--c-ink);word-break:break-all;line-height:1.4}
.contact-card .val.mono{font-family:var(--font-mono);font-weight:600;letter-spacing:.02em}
.contact-card .sub{font-size:12px;color:var(--c-text-4);margin-top:8px}

.qr-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:840px;margin:0 auto}
@media (max-width:640px){.qr-grid{grid-template-columns:1fr}}
.qr-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-md);padding:24px;text-align:center;transition:all .3s var(--ease)}
.qr-card:hover{box-shadow:var(--shadow-md);border-color:transparent}
.qr-card img{width:160px;height:160px;margin:0 auto 16px;border-radius:8px;object-fit:cover;background:var(--c-bg-2)}
.qr-card .name{font-size:15px;font-weight:700;color:var(--c-ink);margin-bottom:4px}
.qr-card .tip{font-size:12px;color:var(--c-text-3)}

/* ====== 服务网络 / 分部联系 / 售后 / 投诉 ====== */
.hotline-band{
  position:relative;
  margin:24px 0 48px;
  padding:36px 28px;
  background:linear-gradient(135deg,var(--c-cyan) 0%,var(--c-blue) 100%);
  color:#fff;
  border-radius:var(--radius-lg);
  text-align:center;
  overflow:hidden;
  box-shadow:0 18px 40px -16px rgba(0, 136, 188, .35);
}
.hotline-band::before,
.hotline-band::after{
  content:"";position:absolute;border-radius:50%;background:rgba(255,255,255,.08);pointer-events:none;
}
.hotline-band::before{width:240px;height:240px;right:-80px;top:-100px}
.hotline-band::after{width:180px;height:180px;left:-60px;bottom:-80px}
.hotline-eyebrow{
  font-size:12px;letter-spacing:.18em;font-weight:600;opacity:.85;
  display:inline-block;padding-bottom:10px;border-bottom:1px dashed rgba(255,255,255,.35);
}
.hotline-num{
  display:inline-flex;align-items:center;gap:14px;
  margin:18px 0 10px;
  font-family:var(--font-mono);
  font-size:46px;font-weight:800;letter-spacing:.04em;
  color:#fff;text-decoration:none;
  transition:transform .3s var(--ease);
}
.hotline-num:hover{transform:scale(1.04);color:#fff}
.hotline-num svg{flex-shrink:0;opacity:.95}
.hotline-tip{font-size:13px;opacity:.85;position:relative;z-index:1}
@media (max-width:560px){
  .hotline-num{font-size:34px;gap:10px}
  .hotline-band{padding:28px 18px}
}

.office-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:20px;
  margin-bottom:32px;
}
@media (max-width:1024px){.office-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.office-grid{grid-template-columns:1fr}}
.office-card{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--radius-md);
  padding:24px 22px;
  position:relative;
  transition:all .3s var(--ease);
  display:flex;flex-direction:column;gap:14px;
  overflow:hidden;
}
.office-card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--c-blue);
  transform:scaleY(0);transform-origin:bottom;transition:transform .35s var(--ease);
}
.office-card:hover{border-color:transparent;box-shadow:var(--shadow-md);transform:translateY(-2px)}
.office-card:hover::before{transform:scaleY(1);transform-origin:top}
.office-card.office-head{
  background:linear-gradient(135deg,#F0FAFF 0%,#E6F3FB 100%);
  border-color:rgba(0, 136, 188, .25);
}
.office-card.office-head::before{background:linear-gradient(180deg,var(--c-cyan),var(--c-blue))}
.office-region{
  font-size:16px;font-weight:700;color:var(--c-ink);line-height:1.4;
}
.office-region span{
  display:block;font-size:10.5px;letter-spacing:.18em;font-weight:600;
  color:var(--c-blue);margin-top:4px;opacity:.7;
}
.office-person{
  display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;
  padding-top:10px;border-top:1px dashed var(--c-line);
}
.office-name{font-size:20px;font-weight:700;color:var(--c-ink);font-family:var(--font-mono);letter-spacing:.04em}
.office-role{font-size:12px;color:var(--c-text-3);padding:2px 8px;background:var(--c-bg-2);border-radius:4px}
.office-phones{display:flex;flex-direction:column;gap:8px;margin-top:auto}
.office-phone{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);
  font-size:15px;font-weight:600;color:var(--c-ink);
  text-decoration:none;
  transition:color .2s var(--ease);
}
.office-phone:hover{color:var(--c-blue)}
.office-phone svg{flex-shrink:0;color:var(--c-blue)}

.service-band{
  display:grid;grid-template-columns:1fr 1fr;gap:20px;
  margin-top:16px;
}
@media (max-width:640px){.service-band{grid-template-columns:1fr}}
.service-card{
  display:flex;align-items:center;gap:16px;
  padding:22px 24px;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--radius-md);
  position:relative;overflow:hidden;
  transition:all .3s var(--ease);
}
.service-card:hover{box-shadow:var(--shadow-md);border-color:transparent;transform:translateY(-2px)}
.service-ic{
  width:48px;height:48px;border-radius:10px;
  display:grid;place-items:center;color:#fff;flex-shrink:0;
}
.service-engineer .service-ic{background:linear-gradient(135deg,#22C55E,#16A34A)}
.service-complaint .service-ic{background:linear-gradient(135deg,#F97316,#EA580C)}
.service-info{flex:1;min-width:0}
.service-label{font-size:12px;color:var(--c-text-3);letter-spacing:.05em;margin-bottom:4px}
.service-name{font-size:20px;font-weight:700;color:var(--c-ink);font-family:var(--font-mono);letter-spacing:.04em}
.service-phone{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-mono);
  font-size:16px;font-weight:600;
  color:var(--c-blue);text-decoration:none;
  padding:8px 14px;border-radius:8px;
  background:rgba(0, 136, 188, .08);
  transition:all .25s var(--ease);
  flex-shrink:0;
}
.service-phone:hover{background:var(--c-blue);color:#fff}
.service-phone:hover svg{color:#fff}
.service-phone svg{color:var(--c-blue);transition:color .2s}

/* ========== 表单 ========== */
.form-wrap{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-lg);
  padding:40px;box-shadow:var(--shadow-sm);
}
.form-row{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-bottom:16px}
@media (max-width:640px){.form-row{grid-template-columns:1fr}}
.form-group label{display:block;font-size:13px;font-weight:600;color:var(--c-ink);margin-bottom:6px}
.form-group label .req{color:var(--c-orange)}
.form-control{
  width:100%;padding:12px 16px;
  font-family:inherit;font-size:14px;
  background:var(--c-bg-2);border:1px solid var(--c-line);
  border-radius:var(--radius-sm);color:var(--c-ink);
  transition:all .2s var(--ease);
}
.form-control:focus{outline:0;border-color:var(--c-blue);background:#fff;box-shadow:0 0 0 3px rgba(21,101,192,.12)}
textarea.form-control{min-height:120px;resize:vertical}
.form-tip{font-size:12px;color:var(--c-text-3);margin-top:8px}

/* ========== 城市分站 ========== */
.city-cloud{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.city-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 18px;font-size:14px;font-weight:500;
  color:var(--c-ink);background:#fff;border:1px solid var(--c-line);
  border-radius:40px;transition:all .25s var(--ease);
}
.city-tag:hover{background:var(--c-blue);color:#fff;border-color:var(--c-blue);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.city-tag .arrow{opacity:0;transition:all .25s var(--ease);transform:translateX(-4px)}
.city-tag:hover .arrow{opacity:1;transform:translateX(0)}

/* ========== 子站友链 ========== */
.sister-grid{display:flex;flex-wrap:nowrap;gap:12px;align-items:stretch}
@media (max-width:1024px){.sister-grid{flex-wrap:wrap}}
@media (max-width:640px){.sister-grid{flex-wrap:wrap}}
.sister-card{
  flex:1 1 0;min-width:0;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  padding:20px 8px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-md);
  font-size:14.5px;font-weight:600;color:var(--c-ink);text-align:center;
  transition:all .25s var(--ease);
}
.sister-card::before{
  content:"";display:block;width:24px;height:2px;
  background:linear-gradient(90deg,var(--c-cyan),var(--c-blue));
  border-radius:2px;opacity:.5;
  transition:width .3s var(--ease),opacity .3s var(--ease);
}
.sister-card:hover{border-color:var(--c-blue);color:var(--c-blue);box-shadow:var(--shadow-sm);transform:translateY(-2px)}
.sister-card:hover::before{width:40px;opacity:1}

/* ========== 文章列表 ========== */
.news-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:32px}
@media (max-width:1024px){.news-grid{grid-template-columns:1fr}}
.news-feature{position:relative;display:block;border-radius:var(--radius-lg);overflow:hidden;aspect-ratio:16/10;background:#000}
.news-feature img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.85;transition:opacity .4s var(--ease),transform .8s var(--ease)}
.news-feature:hover img{transform:scale(1.04);opacity:.75}
.news-feature::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(4,20,43,.92) 100%)}
.news-feature .body{position:absolute;left:0;right:0;bottom:0;z-index:1;padding:32px}
.news-feature .tag{display:inline-block;background:var(--c-cyan);color:#fff;font-size:11px;letter-spacing:.1em;font-weight:600;padding:4px 10px;border-radius:3px;margin-bottom:12px}
.news-feature h3{color:#fff;font-size:24px;margin-bottom:12px;line-height:1.4}
.news-feature p{color:rgba(255,255,255,.78);font-size:14px}
.news-feature .meta{margin-top:16px;display:flex;gap:16px;font-size:12px;color:rgba(255,255,255,.6)}
.news-list{display:flex;flex-direction:column;gap:8px}
.news-item{
  display:block;padding:18px 20px;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-md);
  transition:all .25s var(--ease);
}
.news-item:hover{border-color:var(--c-blue);transform:translateX(4px)}
.news-item h4{font-size:15px;margin-bottom:8px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-item .meta{display:flex;align-items:center;gap:12px;font-size:12px;color:var(--c-text-4)}
.news-item .meta .tag{color:var(--c-blue);font-weight:600}

/* ========== 资质时间轴 ========== */
.timeline{position:relative;max-width:880px;margin:0 auto;padding:20px 0 0 0}
.timeline::before{content:"";position:absolute;left:80px;top:0;bottom:0;width:2px;background:linear-gradient(180deg,var(--c-cyan) 0%,var(--c-blue) 50%,var(--c-ink) 100%)}
.tl-item{display:grid;grid-template-columns:80px 1fr;gap:32px;margin-bottom:32px;position:relative}
.tl-year{
  font-family:var(--font-mono);font-size:22px;font-weight:800;color:var(--c-blue);
  text-align:right;letter-spacing:-.02em;padding-top:4px;
}
.tl-year::after{
  content:"";position:absolute;left:72px;top:14px;
  width:18px;height:18px;border-radius:50%;background:#fff;
  border:4px solid var(--c-blue);
  box-shadow:0 0 0 4px rgba(21,101,192,.15);
}
.tl-body{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-md);
  padding:20px 24px;
}
.tl-body h4{margin-bottom:6px}
.tl-body p{font-size:14px;color:var(--c-text-3)}
@media (max-width:640px){
  .timeline::before{left:20px}
  .tl-item{grid-template-columns:1fr;gap:8px}
  .tl-year{text-align:left;padding-left:36px;padding-top:0}
  .tl-year::after{left:12px;top:6px}
  .tl-body{margin-left:0}
}

/* ========== 证书资质 ========== */
.cert-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
@media (max-width:1024px){.cert-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:560px){.cert-grid{grid-template-columns:repeat(2,1fr)}}
.cert-card{
  aspect-ratio:3/4;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-md);
  overflow:hidden;transition:all .3s var(--ease);
  display:flex;flex-direction:column;
}
.cert-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:transparent}
.cert-card img{flex:1;object-fit:cover;min-height:0}
.cert-card .body{padding:12px;text-align:center;font-size:12px;color:var(--c-text-2);font-weight:600}

/* ========== 灯箱 ========== */
.lightbox{
  position:fixed;inset:0;z-index:200;
  background:rgba(4,20,43,.92);
  display:none;align-items:center;justify-content:center;
  padding:40px;cursor:zoom-out;
}
.lightbox.open{display:flex;animation:lb-in .3s var(--ease)}
@keyframes lb-in{from{opacity:0}to{opacity:1}}
.lightbox img{max-width:92%;max-height:88vh;border-radius:var(--radius-md);box-shadow:0 30px 80px rgba(0,0,0,.5);cursor:default}
.lightbox-close{
  position:absolute;top:24px;right:24px;
  width:48px;height:48px;border-radius:50%;
  background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.2);
  display:grid;place-items:center;cursor:pointer;
  transition:all .25s var(--ease);
}
.lightbox-close:hover{background:rgba(255,255,255,.2)}
.lightbox-caption{
  position:absolute;left:0;right:0;bottom:32px;text-align:center;color:rgba(255,255,255,.8);font-size:14px;
}

/* ========== 标签页 ========== */
.tabs{
  display:flex;flex-wrap:wrap;gap:8px;justify-content:center;
  background:#fff;border:1px solid var(--c-line);border-radius:60px;
  padding:6px;max-width:920px;margin:0 auto 48px;
  box-shadow:var(--shadow-sm);
}
.tab{
  padding:12px 24px;border-radius:40px;
  font-size:14px;font-weight:600;color:var(--c-text-2);
  transition:all .25s var(--ease);
  white-space:nowrap;
}
.tab:hover{color:var(--c-ink)}
.tab.active{background:var(--c-blue);color:#fff;box-shadow:0 4px 12px rgba(21,101,192,.25)}
.tab-count{font-size:12px;opacity:.7;margin-left:4px}

.tab-panel{display:none}
.tab-panel.active{display:block;animation:tab-in .4s var(--ease)}
@keyframes tab-in{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

/* ========== 产品网格 ========== */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
@media (max-width:1024px){.prod-grid{grid-template-columns:repeat(3,1fr)}}
@media (max-width:768px){.prod-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:480px){.prod-grid{grid-template-columns:1fr}}
.prod-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-md);
  overflow:hidden;transition:all .3s var(--ease);
  cursor:zoom-in;
}
.prod-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--c-blue)}
.prod-card .pic{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--c-bg-3)}
.prod-card .pic img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.prod-card:hover .pic img{transform:scale(1.06)}
.prod-card .body{padding:18px 20px 20px;flex:1;display:flex;flex-direction:column}
.prod-card .cat{font-size:11px;letter-spacing:.15em;color:var(--c-cyan);font-weight:700;text-transform:uppercase;margin-bottom:8px}
.prod-card h4{font-size:15px;line-height:1.5;margin-bottom:10px;flex:1}
.prod-card .desc{font-size:13px;color:var(--c-text-3);line-height:1.65;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:14px}
.prod-card .actions{display:flex;gap:8px;margin-top:auto}
.prod-card .actions a{
  flex:1;display:inline-flex;align-items:center;justify-content:center;gap:4px;
  font-size:12px;font-weight:600;padding:8px 12px;
  border-radius:var(--radius-sm);transition:all .2s var(--ease);
}
.prod-card .actions .inquire{background:var(--c-blue);color:#fff}
.prod-card .actions .inquire:hover{background:var(--c-blue-2);color:#fff}
.prod-card .actions .detail{background:var(--c-bg-2);color:var(--c-text-2)}
.prod-card .actions .detail:hover{background:var(--c-ink);color:#fff}

/* ========== 关于页-工厂实景 ========== */
.factory-grid{display:grid;grid-template-columns:2fr 1fr 1fr;grid-template-rows:1fr 1fr;gap:16px;height:560px}
@media (max-width:768px){.factory-grid{grid-template-columns:1fr;height:auto}}
.factory-grid > div{position:relative;overflow:hidden;border-radius:var(--radius-md);background:#000}
.factory-grid > div img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .8s var(--ease)}
.factory-grid > div:hover img{transform:scale(1.05)}
.factory-grid > div::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(4,20,43,.6) 100%)}
.factory-grid > div .lbl{position:absolute;left:16px;bottom:16px;z-index:1;color:#fff;font-weight:600;font-size:14px}
.factory-grid .big{grid-row:1/3}

/* ========== 内容文字段 ========== */
.prose{max-width:880px;margin:0 auto}
.prose p{margin-bottom:18px;line-height:1.95;font-size:15.5px}
.prose h3{margin:40px 0 16px;padding-left:16px;border-left:4px solid var(--c-blue);font-size:22px}
.prose h4{margin:28px 0 12px;font-size:18px;color:var(--c-ink)}
.prose ul,.prose ol{margin:0 0 18px 24px;color:var(--c-text-2)}
.prose ul li,.prose ol li{margin-bottom:8px;line-height:1.85;list-style:disc}
.prose ol li{list-style:decimal}
.prose strong{color:var(--c-ink)}

/* ========== 分页 ========== */
.pagination{display:flex;justify-content:center;gap:8px;margin-top:48px;flex-wrap:wrap}
.pagination a,.pagination span{
  min-width:40px;height:40px;padding:0 12px;border-radius:var(--radius-sm);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:600;border:1px solid var(--c-line);
  background:#fff;color:var(--c-text-2);
  transition:all .2s var(--ease);
}
.pagination a:hover{border-color:var(--c-blue);color:var(--c-blue)}
.pagination .active{background:var(--c-blue);border-color:var(--c-blue);color:#fff}
.pagination .gap{border:0;background:transparent}

/* ========== Footer ========== */
.footer{
  background:#04142B;color:rgba(255,255,255,.7);
  padding:80px 0 0;font-size:14px;position:relative;overflow:hidden;
}
.footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent 0%,var(--c-cyan) 50%,transparent 100%);
}
.footer::after{
  content:"";position:absolute;top:0;left:0;right:0;height:120px;
  background:radial-gradient(ellipse 60% 100% at 50% 0%,rgba(0,180,216,.15) 0%,transparent 80%);
  pointer-events:none;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr 1fr;gap:48px;
  position:relative;z-index:1;padding-bottom:48px;
}
@media (max-width:1024px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr;gap:24px}}
.footer .brand{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.footer .brand .mark{
  width:40px;height:40px;border-radius:8px;
  background:linear-gradient(135deg,var(--c-cyan) 0%,var(--c-blue) 100%);
  display:grid;place-items:center;color:#fff;font-weight:900;font-size:18px;
}
.footer .brand .text{font-size:18px;font-weight:900;color:#fff;letter-spacing:.04em}
.footer .desc{font-size:13px;line-height:1.85;max-width:320px}
.footer-col h5{color:#fff;font-size:14px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:20px;font-weight:700}
.footer-col ul li{margin-bottom:10px}
.footer-col a{color:rgba(255,255,255,.6);font-size:13.5px;transition:all .2s var(--ease)}
.footer-col a:hover{color:var(--c-cyan-2)}
.footer-col .line{display:flex;align-items:flex-start;gap:8px;margin-bottom:12px;font-size:13px}
.footer-col .line svg{flex:none;color:var(--c-cyan-2);margin-top:3px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:24px 0;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  font-size:12.5px;color:rgba(255,255,255,.5);position:relative;z-index:1;
}
.footer-bottom a{color:rgba(255,255,255,.5)}
.footer-bottom a:hover{color:#fff}
.footer-bottom .links{display:flex;gap:16px;flex-wrap:wrap}

/* ========== 工具类 ========== */
.text-center{text-align:center}
.mt-32{margin-top:32px}
.mt-48{margin-top:48px}
.mb-32{margin-bottom:32px}
.relative{position:relative}
.bg-light{background:var(--c-bg-2)}
.bg-dark{background:#04142B;color:#fff}
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:translateY(0)}

/* ========== 装饰 ========== */
.wave-bg{position:absolute;left:0;right:0;bottom:-1px;height:80px;color:#fff;pointer-events:none;z-index:1}
.wave-bg svg{width:100%;height:100%}
.deco-circle{
  position:absolute;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,rgba(0,180,216,.15) 0%,transparent 70%);
  pointer-events:none;
}

/* ========== 减少动效 ========== */
@media (prefers-reduced-motion: reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
  html{scroll-behavior:auto}
}

/* ========== 文章详情页 ========== */
.article-page{
  max-width:880px;margin:0 auto;
  padding:64px 24px 96px;
}
.article-cover{
  width:100%;aspect-ratio:16/9;border-radius:var(--radius-lg);
  overflow:hidden;background:#000;margin-bottom:32px;position:relative;
}
.article-cover img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:16px;
  margin-bottom:16px;font-size:13px;color:var(--c-text-3);
}
.article-meta .tag{
  display:inline-block;background:var(--c-cyan);color:#fff;
  font-size:11px;letter-spacing:.1em;font-weight:600;
  padding:4px 10px;border-radius:3px;
}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--c-text-4);display:inline-block}
.article-title{
  font-size:clamp(28px,3.6vw,42px);line-height:1.3;
  color:var(--c-ink);font-weight:900;letter-spacing:-.02em;
  margin-bottom:20px;
}
.article-summary{
  font-size:17px;line-height:1.85;color:var(--c-text-2);
  padding:20px 24px;background:var(--c-bg-2);border-left:4px solid var(--c-blue);
  border-radius:0 var(--radius-md) var(--radius-md) 0;margin-bottom:40px;
}
.article-body{
  font-size:16px;line-height:1.95;color:var(--c-text);
}
.article-body p{margin-bottom:20px;color:var(--c-text)}
.article-body h2{
  font-size:clamp(22px,2.4vw,28px);font-weight:800;
  color:var(--c-ink);margin:40px 0 16px;
  padding-left:16px;border-left:4px solid var(--c-blue);line-height:1.4;
}
.article-body h3{
  font-size:clamp(18px,1.8vw,22px);font-weight:700;
  color:var(--c-ink);margin:32px 0 14px;line-height:1.5;
}
.article-body ul,.article-body ol{
  margin:0 0 20px 0;padding-left:24px;
}
.article-body ul li,.article-body ol li{
  list-style:disc;color:var(--c-text);
  margin-bottom:8px;line-height:1.85;
}
.article-body ol li{list-style:decimal}
.article-body strong{color:var(--c-ink);font-weight:700}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;
  background:var(--c-bg-2);border-left:4px solid var(--c-cyan);
  border-radius:0 var(--radius-md) var(--radius-md) 0;
  color:var(--c-text-2);font-style:normal;
}
.article-body table{
  width:100%;border-collapse:collapse;margin:20px 0;font-size:14px;
}
.article-body th,.article-body td{
  border:1px solid var(--c-line);padding:10px 14px;text-align:left;
}
.article-body th{background:var(--c-bg-2);font-weight:700;color:var(--c-ink)}
.article-cta{
  margin:48px 0;padding:32px 28px;
  background:linear-gradient(135deg,var(--c-cyan) 0%,var(--c-blue) 100%);
  color:#fff;border-radius:var(--radius-lg);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
  box-shadow:0 18px 40px -16px rgba(0, 136, 188, .35);
}
.article-cta-info{flex:1;min-width:220px}
.article-cta-info h4{color:#fff;font-size:20px;margin-bottom:8px}
.article-cta-info p{color:rgba(255,255,255,.85);font-size:14px;margin:0}
.article-cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.article-cta-actions a{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 20px;border-radius:var(--radius-sm);
  font-size:14px;font-weight:700;white-space:nowrap;
  transition:all .25s var(--ease);
}
.article-cta-actions .btn-white{background:#fff;color:var(--c-blue)}
.article-cta-actions .btn-white:hover{background:var(--c-bg-2);transform:translateY(-1px);color:var(--c-blue-2)}
.article-cta-actions .btn-line-w{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.6)}
.article-cta-actions .btn-line-w:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.article-nav{
  display:grid;grid-template-columns:1fr 1fr;gap:16px;
  margin-top:48px;padding-top:32px;border-top:1px solid var(--c-line);
}
.article-nav .nav-item{
  display:block;padding:18px 20px;
  background:var(--c-bg-2);border:1px solid var(--c-line);border-radius:var(--radius-md);
  transition:all .25s var(--ease);
}
.article-nav .nav-item:hover{border-color:var(--c-blue);background:#fff;transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.article-nav .nav-item .lbl{
  display:flex;align-items:center;gap:6px;
  font-size:12px;color:var(--c-text-3);margin-bottom:6px;letter-spacing:.05em;
}
.article-nav .nav-item .t{font-size:14px;font-weight:600;color:var(--c-ink);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.article-nav .nav-item.next{text-align:right}
.article-nav .nav-item.next .lbl{justify-content:flex-end}
.article-nav .nav-item.disabled{opacity:.4;pointer-events:none}
.related-articles{margin-top:64px;padding-top:48px;border-top:1px solid var(--c-line)}
.related-articles h3{font-size:22px;margin-bottom:24px;color:var(--c-ink);display:flex;align-items:center;gap:10px}
.related-articles h3::before{content:"";display:inline-block;width:4px;height:22px;background:linear-gradient(180deg,var(--c-cyan),var(--c-blue));border-radius:2px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media (max-width:768px){.related-grid{grid-template-columns:1fr}}
.related-card{
  display:block;padding:18px 20px;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-md);
  transition:all .25s var(--ease);
}
.related-card:hover{border-color:var(--c-blue);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.related-card .tag{font-size:11px;color:var(--c-blue);font-weight:600;letter-spacing:.05em;margin-bottom:8px;display:block}
.related-card h4{font-size:15px;line-height:1.55;color:var(--c-ink);font-weight:700;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-card .date{font-size:12px;color:var(--c-text-4)}
@media (max-width:640px){
  .article-nav{grid-template-columns:1fr}
  .article-cta{flex-direction:column;align-items:flex-start}
  .article-title{font-size:26px}
  .article-body{font-size:15px;line-height:1.85}
}