/* ============================================================
   立坤环保机械 — 工业奢华风格主样式
   ============================================================ */

/* ---------- CSS 变量 ---------- */
:root {
  --primary:        #1565c0;   /* 科技蓝 */
  --primary-light:  #2f8fd6;
  --primary-dark:   #0d3f7a;
  --accent:         #2e9e5b;   /* 环保绿 */
  --accent-light:   #4fb477;
  --accent-dark:    #1f7a43;
  --dark:           #0a1f38;   /* 深海军蓝（暗色带：英雄区/页头图）*/
  --bg:             #f4f8fc;   /* 页面浅底 */
  --surface:        #ffffff;
  --surface2:       #eaf2fb;
  --text:           #1b2c3e;
  --text-muted:     #5d748c;
  --border:         rgba(21,101,192,.14);
  --white:          #ffffff;
  --shadow-accent:  0 8px 40px rgba(46,158,91,.14);
  --shadow-dark:    0 8px 40px rgba(10,31,56,.16);
  --shadow-blue:    0 8px 40px rgba(21,101,192,.12);
  --radius:         8px;
  --radius-lg:      16px;
  --transition:     .3s cubic-bezier(.4,0,.2,1);
  --font-main:      'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
  --font-en:        'Barlow','Arial',sans-serif;
  --header-h:       80px;
}

/* ---------- 重置 ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-main);background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{cursor:pointer;border:none;outline:none;background:none;font-family:inherit}

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--surface)}
::-webkit-scrollbar-thumb{background:var(--accent);border-radius:3px}

/* ============================================================
   排版
   ============================================================ */
.section-label{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-en);font-size:.72rem;font-weight:700;letter-spacing:.2em;
  text-transform:uppercase;color:var(--accent);
  margin-bottom:12px;
}
.section-label::before{content:'';width:24px;height:2px;background:var(--accent)}

.section-title{
  font-size:clamp(1.8rem,3vw,2.8rem);font-weight:700;
  line-height:1.2;color:var(--text);
  margin-bottom:.6em;
}
.section-title span{color:var(--accent)}

.section-desc{
  font-size:1rem;color:var(--text-muted);max-width:600px;line-height:1.8;
}

/* ============================================================
   容器
   ============================================================ */
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 24px}
.section{padding:100px 0}
.section-alt{background:var(--surface)}

/* ============================================================
   按钮
   ============================================================ */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 32px;border-radius:var(--radius);
  font-size:.95rem;font-weight:600;letter-spacing:.04em;
  transition:var(--transition);
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-light));
  color:var(--white);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(46,158,91,.4)}
.btn-outline{
  border:1.5px solid var(--accent);color:var(--accent);
}
.btn-outline:hover{background:var(--accent);color:var(--white);transform:translateY(-2px)}
.btn svg{width:18px;height:18px;flex-shrink:0}

/* ============================================================
   导航栏
   ============================================================ */
.header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  height:var(--header-h);
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border-bottom:1px solid var(--border);
  transition:var(--transition);
}
.header.scrolled{background:rgba(255,255,255,.98);box-shadow:var(--shadow-blue)}
.nav-container{display:flex;align-items:center;justify-content:space-between;height:100%}

.logo{display:flex;align-items:center;gap:12px;text-decoration:none}
.logo img{height:44px;width:auto}
.logo-text{display:flex;flex-direction:column;line-height:1.2}
.logo-main{font-size:.85rem;font-weight:700;color:var(--text);letter-spacing:.06em}
.logo-sub{font-size:.6rem;color:var(--accent);letter-spacing:.12em;text-transform:uppercase}

.nav-list{display:flex;align-items:center;gap:32px;list-style:none;margin:0;padding:0}
.nav-list a{
  font-size:.88rem;font-weight:500;color:var(--text-muted);
  position:relative;padding-bottom:4px;transition:var(--transition);text-decoration:none;
}
.nav-list a::after{
  content:'';position:absolute;bottom:0;left:0;width:0;height:2px;
  background:var(--accent);transition:var(--transition);
}
.nav-list a:hover,.nav-list a.active{color:var(--primary)}
.nav-list a:hover::after,.nav-list a.active::after{width:100%}

.nav-phone a{
  display:flex;align-items:center;gap:6px;
  font-size:.88rem;font-weight:600;color:var(--accent);text-decoration:none;
  padding:8px 16px;border:1px solid rgba(46,158,91,.25);border-radius:50px;
  transition:var(--transition);
}
.nav-phone a:hover{background:rgba(46,158,91,.1);border-color:var(--accent)}

.menu-toggle{display:none;flex-direction:column;gap:5px;padding:4px;background:none;border:none;cursor:pointer}
.menu-toggle span{width:24px;height:2px;background:var(--text);transition:var(--transition);display:block}

/* ============================================================
   英雄区 (首页)
   ============================================================ */
.hero{
  min-height:100vh;display:flex;align-items:center;
  position:relative;overflow:hidden;
  background:var(--dark);
  padding-top:var(--header-h);
}
.hero-bg{
  position:absolute;inset:0;
  background:url('../images/banner2.jpg') center/cover no-repeat;
  filter:brightness(.55);
  transform:scale(1.05);
  transition:transform 8s ease;
}
.hero:hover .hero-bg{transform:scale(1)}
.hero-overlay{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(10,31,56,.75) 0%,rgba(10,31,56,.45) 50%,rgba(10,31,56,.2) 100%);
}
.hero-grid-lines{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(46,158,91,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(46,158,91,.04) 1px,transparent 1px);
  background-size:80px 80px;
}
.hero .container{justify-content:flex-start}
.hero-content{position:relative;z-index:1;max-width:640px;text-align:left;margin:0;padding-left:48px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(46,158,91,.12);border:1px solid var(--border);
  border-radius:100px;padding:6px 16px;
  font-size:.75rem;color:var(--accent);letter-spacing:.1em;text-transform:uppercase;
  margin-bottom:32px;
}
.hero-badge::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--accent);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}

.hero-title{
  font-size:clamp(2.4rem,5vw,4.2rem);font-weight:800;
  line-height:1.1;color:var(--white);margin-bottom:24px;
}
.hero-title .highlight{
  color:var(--accent);
  background:linear-gradient(135deg,var(--accent),var(--accent-light));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
}
.hero-subtitle{font-size:1.1rem;color:#b8c8da;margin-bottom:40px;line-height:1.8}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:60px}
.hero-stats{display:flex;gap:40px;flex-wrap:wrap}
.hero-stat{text-align:center}
.hero-stat .num{
  display:block;font-size:2.4rem;font-weight:800;
  background:linear-gradient(135deg,var(--accent),var(--accent-light));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  line-height:1;
}
.hero-stat .label{font-size:.78rem;color:#9fb3c8;letter-spacing:.05em;margin-top:4px}
.hero-scroll{
  position:absolute;bottom:40px;left:50%;transform:translateX(-50%);
  display:flex;flex-direction:column;align-items:center;gap:8px;
  color:#9fb3c8;font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;
}
.hero-scroll-line{width:1px;height:40px;background:linear-gradient(to bottom,var(--accent),transparent);animation:scrollLine 2s infinite}
@keyframes scrollLine{0%{opacity:0;transform:scaleY(0)}50%{opacity:1}100%{opacity:0;transform:translateY(20px)}}

/* ============================================================
   核心优势
   ============================================================ */
.advantages{background:var(--surface)}
.advantages-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px;margin-top:60px}
.adv-card{
  background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:36px 28px;position:relative;overflow:hidden;
  transition:var(--transition);
}
.adv-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--accent),var(--accent-light));
  transform:scaleX(0);transform-origin:left;transition:var(--transition);
}
.adv-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-accent);border-color:rgba(46,158,91,.35)}
.adv-card:hover::before{transform:scaleX(1)}
.adv-icon{
  width:56px;height:56px;border-radius:var(--radius);
  background:rgba(46,158,91,.1);border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:20px;
}
.adv-icon svg{width:26px;height:26px;stroke:var(--accent)}
.adv-card h3{font-size:1.1rem;font-weight:700;color:var(--text);margin-bottom:10px}
.adv-card p{font-size:.88rem;color:var(--text-muted);line-height:1.7}
.adv-num{
  position:absolute;right:24px;bottom:20px;
  font-family:var(--font-en);font-size:3.5rem;font-weight:800;
  color:rgba(46,158,91,.06);line-height:1;
}

/* ============================================================
   产品展示（首页）
   ============================================================ */
.products-section{background:var(--surface2)}
.section-header{display:flex;flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:48px}
.section-badge{
  display:inline-block;font-size:.75rem;font-weight:700;letter-spacing:.12em;
  text-transform:uppercase;color:var(--accent);
  background:rgba(46,158,91,.08);border:1px solid rgba(46,158,91,.2);
  padding:4px 14px;border-radius:50px;
}
.section-header h2{font-size:clamp(1.6rem,3vw,2.4rem);font-weight:800;color:var(--text);line-height:1.3}
.section-header .section-desc{color:var(--text-muted);font-size:.95rem}
.prod-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px}
.prod-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  overflow:hidden;transition:var(--transition);cursor:pointer;
}
.prod-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-accent);border-color:rgba(46,158,91,.4)}
.prod-img{position:relative;height:220px;overflow:hidden}
.prod-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.prod-card:hover .prod-img img{transform:scale(1.08)}
.prod-tag{
  position:absolute;top:16px;left:16px;
  background:rgba(10,31,56,.85);border:1px solid var(--accent);
  color:var(--accent);font-size:.7rem;font-weight:600;letter-spacing:.08em;
  padding:4px 12px;border-radius:100px;
}
.prod-info{padding:24px}
.prod-info h3{font-size:1.1rem;font-weight:700;color:var(--text);margin-bottom:8px}
.prod-info p{font-size:.85rem;color:var(--text-muted);line-height:1.7;margin-bottom:16px}
.prod-specs{display:flex;gap:16px;flex-wrap:wrap}
.prod-spec{font-size:.75rem;color:var(--accent);background:rgba(46,158,91,.08);padding:4px 10px;border-radius:4px}
.prod-arrow{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 24px;border-top:1px solid var(--border);
  color:var(--text-muted);font-size:.83rem;transition:var(--transition);
}
.prod-card:hover .prod-arrow{color:var(--accent)}
.prod-arrow svg{width:16px;height:16px}

/* ============================================================
   应用领域
   ============================================================ */
.applications{background:var(--surface)}
.app-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-top:60px}
.app-item{
  background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius);
  padding:28px 16px;text-align:center;transition:var(--transition);
}
.app-item:hover{border-color:var(--accent);transform:translateY(-4px);box-shadow:var(--shadow-accent)}
.app-item svg{width:32px;height:32px;stroke:var(--accent);margin:0 auto 14px}
.app-item p{font-size:.85rem;color:var(--text-muted)}

/* ============================================================
   公司介绍横幅
   ============================================================ */
.company-intro{position:relative;overflow:hidden;padding:100px 0}
.company-intro-bg{position:absolute;inset:0;background:url('../images/banner2.jpg') center/cover no-repeat;filter:brightness(.2)}
.company-intro-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(10,31,56,.9) 0%,rgba(10,31,56,.6) 100%)}
.company-intro-content{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.company-intro-text .section-desc{max-width:100%}
.company-intro-list{margin-top:24px;display:flex;flex-direction:column;gap:12px}
.company-intro-list li{display:flex;align-items:center;gap:10px;font-size:.9rem;color:#dbe6f2}
.company-intro-list li::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--accent);flex-shrink:0}
.company-cert{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.cert-item{
  background:rgba(255,255,255,.06);border:1px solid var(--border);
  border-radius:var(--radius);padding:20px;
}
.cert-item .cert-num{font-size:2rem;font-weight:800;color:var(--accent);line-height:1}
.cert-item .cert-label{font-size:.78rem;color:#9fb3c8;margin-top:4px}
.company-intro .section-desc{color:#c2d2e2}
.company-intro-text .section-desc{color:#c2d2e2}

/* ============================================================
   CTA 横幅
   ============================================================ */
.cta-section{
  padding:100px 24px;position:relative;overflow:hidden;
  background:linear-gradient(135deg,#0a1f38 0%,#0d3f7a 50%,#0a1f38 100%);
}
.cta-section::before{
  content:'';position:absolute;top:-30%;right:-10%;width:600px;height:600px;
  background:radial-gradient(circle,rgba(46,158,91,.18) 0%,transparent 65%);
  border-radius:50%;
}
.cta-section::after{
  content:'';position:absolute;bottom:-40%;left:-15%;width:500px;height:500px;
  background:radial-gradient(circle,rgba(21,101,192,.15) 0%,transparent 65%);
  border-radius:50%;
}
.cta-section .container{position:relative;z-index:1;text-align:center;max-width:720px}
.cta-section h2{
  font-size:clamp(1.8rem,3.5vw,2.8rem);font-weight:800;
  color:#fff;margin-bottom:16px;line-height:1.3;
}
.cta-section p{font-size:1.05rem;color:rgba(255,255,255,.7);margin-bottom:40px;line-height:1.8}
.cta-actions{display:flex;justify-content:center;gap:20px;flex-wrap:wrap}
.cta-actions .btn{
  padding:16px 36px;border-radius:50px;font-size:1rem;font-weight:600;
  letter-spacing:.03em;transition:var(--transition);
}
.btn-cta-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-light));
  color:#fff;box-shadow:0 8px 30px rgba(46,158,91,.35);
}
.btn-cta-primary:hover{transform:translateY(-3px);box-shadow:0 12px 40px rgba(46,158,91,.5)}
.btn-cta-outline{
  border:2px solid rgba(255,255,255,.35);color:#fff;background:rgba(255,255,255,.05);
  backdrop-filter:blur(4px);
}
.btn-cta-outline:hover{border-color:#fff;background:rgba(255,255,255,.12);transform:translateY(-3px)}

/* ============================================================
   页脚
   ============================================================ */
.footer{background:var(--surface);border-top:1px solid var(--border);padding:80px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:60px;margin-bottom:60px}
.footer-brand .logo{margin-bottom:20px}
.footer-brand p{font-size:.85rem;color:var(--text-muted);line-height:1.8;max-width:280px}
.footer-col h4{font-size:.9rem;font-weight:700;color:var(--text);margin-bottom:20px;letter-spacing:.05em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col ul a{font-size:.83rem;color:var(--text-muted);transition:var(--transition)}
.footer-col ul a:hover{color:var(--accent)}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact li{display:flex;gap:10px;font-size:.83rem;color:var(--text-muted);align-items:flex-start}
.footer-contact li svg{width:16px;height:16px;stroke:var(--accent);flex-shrink:0;margin-top:2px}
.footer-bottom{
  border-top:1px solid var(--border);padding:24px 0;
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-size:.78rem;color:var(--text-muted);
}
.footer-icp a{color:var(--text-muted);transition:var(--transition)}
.footer-icp a:hover{color:var(--accent)}

/* ============================================================
   页面 Banner（内页顶部）
   ============================================================ */
.page-banner{
  position:relative;height:320px;display:flex;align-items:center;
  margin-top:var(--header-h);overflow:hidden;
  background:url('../images/banner2.jpg') center/cover no-repeat;
}
.page-banner::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(10,31,56,.82) 0%,rgba(10,31,56,.6) 100%);
}
.page-banner .container{position:relative;z-index:1}
.page-banner h1{font-size:clamp(2rem,4vw,3.2rem);font-weight:800;color:var(--white);margin-bottom:12px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:.83rem;color:#c2d2e2}
.breadcrumb a{color:var(--accent)}
.breadcrumb span{color:#aebfd0}

/* ============================================================
   关于我们页面
   ============================================================ */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.about-img-wrap{position:relative}
.about-img-main{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-dark)}
.about-img-main img{width:100%;height:400px;object-fit:cover}
.about-img-badge{
  position:absolute;bottom:-24px;right:-24px;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  border:2px solid var(--accent);border-radius:var(--radius);
  padding:20px 24px;text-align:center;
  box-shadow:var(--shadow-accent);
}
.about-img-badge .big{font-size:2.4rem;font-weight:800;color:var(--accent);line-height:1}
.about-img-badge .small{font-size:.78rem;color:rgba(255,255,255,.85);margin-top:4px}

.about-text .section-desc{max-width:100%;margin-bottom:32px}
.about-features{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:36px}
.about-feat{
  background:var(--surface2);border:1px solid var(--border);
  border-radius:var(--radius);padding:16px;display:flex;align-items:flex-start;gap:12px;
}
.about-feat svg{width:22px;height:22px;stroke:var(--accent);flex-shrink:0;margin-top:2px}
.about-feat div h4{font-size:.88rem;font-weight:700;color:var(--text);margin-bottom:4px}
.about-feat div p{font-size:.78rem;color:var(--text-muted)}

/* 时间轴 */
.timeline{position:relative;padding-left:40px}
.timeline::before{content:'';position:absolute;left:12px;top:0;bottom:0;width:2px;background:linear-gradient(to bottom,var(--accent),transparent)}
.timeline-item{position:relative;padding-bottom:36px}
.timeline-dot{
  position:absolute;left:-34px;top:4px;
  width:12px;height:12px;border-radius:50%;
  background:var(--accent);border:2px solid var(--dark);
  box-shadow:0 0 0 4px rgba(46,158,91,.2);
}
.timeline-item h4{font-size:.95rem;font-weight:700;color:var(--text);margin-bottom:4px}
.timeline-item .year{font-size:.78rem;color:var(--accent);margin-bottom:8px}
.timeline-item p{font-size:.83rem;color:var(--text-muted);line-height:1.7}

/* 企业文化 */
.culture-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:24px;margin-top:60px}
.culture-card{
  background:var(--surface2);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:36px 28px;text-align:center;
  transition:var(--transition);position:relative;overflow:hidden;
}
.culture-card::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(46,158,91,.06),transparent);
  opacity:0;transition:var(--transition);
}
.culture-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-accent)}
.culture-card:hover::after{opacity:1}
.culture-card svg{width:48px;height:48px;stroke:var(--accent);margin:0 auto 20px}
.culture-card h3{font-size:1.05rem;font-weight:700;color:var(--text);margin-bottom:10px}
.culture-card p{font-size:.83rem;color:var(--text-muted);line-height:1.7}

/* 资质证书 */
.certs-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-top:60px}
.cert-card{
  background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;text-align:center;transition:var(--transition);
}
.cert-card:hover{border-color:var(--accent);box-shadow:var(--shadow-accent)}
.cert-icon{width:56px;height:56px;margin:0 auto 16px;border-radius:50%;background:rgba(46,158,91,.1);display:flex;align-items:center;justify-content:center}
.cert-icon svg{width:28px;height:28px;stroke:var(--accent)}
.cert-card h4{font-size:.9rem;font-weight:700;color:var(--text);margin-bottom:4px}
.cert-card p{font-size:.78rem;color:var(--text-muted)}

/* ============================================================
   产品页面
   ============================================================ */
.products-page .section{padding:80px 0}

/* 筛选标签 */
.filter-bar{display:flex;align-items:center;gap:12px;margin-bottom:50px;flex-wrap:wrap}
.filter-btn{
  padding:9px 22px;border-radius:100px;
  font-size:.83rem;font-weight:600;color:var(--text-muted);
  background:var(--surface2);border:1px solid var(--border);
  transition:var(--transition);
}
.filter-btn:hover,.filter-btn.active{
  background:var(--accent);color:var(--white);border-color:var(--accent);
}

/* 产品详情卡 */
.product-detail-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  overflow:hidden;margin-bottom:32px;
  transition:var(--transition);
}
.product-detail-card:hover{border-color:rgba(46,158,91,.4);box-shadow:var(--shadow-accent)}
.product-detail-inner{display:grid;grid-template-columns:320px 1fr;min-height:360px}
.product-detail-img{position:relative;overflow:hidden}
.product-detail-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.product-detail-card:hover .product-detail-img img{transform:scale(1.06)}
.product-detail-body{padding:36px 40px;display:flex;flex-direction:column;justify-content:space-between}
.product-detail-body h3{font-size:1.4rem;font-weight:700;color:var(--text);margin-bottom:10px}
.product-model{font-family:var(--font-en);font-size:.78rem;color:var(--accent);letter-spacing:.12em;margin-bottom:16px}
.product-detail-body p{font-size:.88rem;color:var(--text-muted);line-height:1.8;margin-bottom:24px}
.param-table{width:100%;border-collapse:collapse;margin-top:16px}
.param-table th{font-size:.72rem;color:var(--accent);text-align:left;padding:8px 12px;border-bottom:1px solid var(--border);font-weight:600;letter-spacing:.05em}
.param-table td{font-size:.78rem;color:var(--text);padding:8px 12px;border-bottom:1px solid rgba(255,255,255,.04)}
.param-table tr:hover td{background:rgba(46,158,91,.04)}
.product-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.product-tag{font-size:.72rem;color:var(--accent);background:rgba(46,158,91,.08);border:1px solid rgba(46,158,91,.2);padding:4px 12px;border-radius:100px}

/* 选型指南 */
.selection-guide{background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius-lg);padding:48px}
.selection-steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:24px;margin-top:40px}
.step-card{text-align:center;padding:24px;position:relative}
.step-num{
  width:48px;height:48px;border-radius:50%;
  background:rgba(46,158,91,.1);border:2px solid var(--accent);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-en);font-size:1.2rem;font-weight:800;color:var(--accent);
  margin:0 auto 16px;
}
.step-card h4{font-size:.95rem;font-weight:700;color:var(--text);margin-bottom:8px}
.step-card p{font-size:.83rem;color:var(--text-muted)}
.step-arrow{position:absolute;right:-12px;top:50%;transform:translateY(-50%);color:var(--accent);font-size:1.4rem}

/* ============================================================
   维护保养页面
   ============================================================ */
/* 内容页 Hero（博客、维护保养等） */
.page-hero{
  position:relative;margin-top:var(--header-h);
  background:url('../images/banner2.jpg') center/cover no-repeat;
  overflow:hidden;
}
.page-hero::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,rgba(10,31,56,.88) 0%,rgba(21,101,192,.75) 50%,rgba(46,158,91,.55) 100%);
}
.page-hero::after{
  content:'';position:absolute;bottom:0;left:0;right:0;height:120px;
  background:linear-gradient(to top,var(--bg),transparent);
}
.page-hero .container{
  position:relative;z-index:1;text-align:center;padding:90px 0 70px;
}
.page-hero nav{display:inline-flex;align-items:center;gap:8px;font-size:.85rem;color:rgba(255,255,255,.6);margin-bottom:16px}
.page-hero nav a{color:rgba(255,255,255,.75);text-decoration:none;transition:.2s}
.page-hero nav a:hover{color:#fff}
.page-hero h1{
  font-size:clamp(2rem,5vw,3.4rem);font-weight:800;color:#fff;
  margin-bottom:14px;line-height:1.15;letter-spacing:-.02em;
}
.page-hero h1::after{
  content:'';display:block;width:60px;height:3px;background:var(--accent);
  margin:16px auto 0;border-radius:2px;
}
.page-hero .hero-desc{
  font-size:1.05rem;color:rgba(255,255,255,.78);
  max-width:520px;margin:0 auto;line-height:1.7;
}
/* 装饰圆环 */
.page-hero .deco-circle{
  position:absolute;border-radius:50%;border:1px solid rgba(255,255,255,.08);
  pointer-events:none;
}
/* 文章页 meta 信息 */
.page-hero #postMeta{
  display:flex;gap:16px;flex-wrap:wrap;font-size:.9rem;color:rgba(255,255,255,.65);
  margin-top:14px;justify-content:center;
}
.page-hero #postMeta span{display:inline-flex;align-items:center;gap:5px}

.maint-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px;margin-top:60px}
.maint-card{
  background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:36px 28px;transition:var(--transition);
}
.maint-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-accent);border-color:rgba(46,158,91,.35)}
.maint-card-header{display:flex;align-items:center;gap:14px;margin-bottom:24px}
.maint-icon{
  width:52px;height:52px;border-radius:var(--radius);flex-shrink:0;
  background:rgba(46,158,91,.1);border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;
}
.maint-icon svg{width:24px;height:24px;stroke:var(--accent)}
.maint-card-header h3{font-size:1.05rem;font-weight:700;color:var(--text)}

.maint-list{display:flex;flex-direction:column;gap:10px}
.maint-list li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:.85rem;color:var(--text-muted);line-height:1.6;
}
.maint-list li::before{
  content:'';width:6px;height:6px;border-radius:50%;
  background:var(--accent);flex-shrink:0;margin-top:6px;
}

/* 保养周期表 */
.schedule-table{width:100%;border-collapse:collapse;margin-top:40px}
.schedule-table thead th{
  background:var(--primary);color:var(--accent);
  font-size:.78rem;font-weight:600;letter-spacing:.05em;text-transform:uppercase;
  padding:14px 16px;text-align:left;border-bottom:2px solid var(--accent);
}
.schedule-table tbody td{
  padding:12px 16px;font-size:.83rem;color:var(--text);
  border-bottom:1px solid var(--border);
  transition:var(--transition);
}
.schedule-table tbody tr:hover td{background:rgba(46,158,91,.04)}
.freq-badge{
  display:inline-block;font-size:.7rem;font-weight:700;
  padding:3px 10px;border-radius:100px;
}
.freq-daily{background:rgba(46,158,91,.15);color:var(--accent)}
.freq-weekly{background:rgba(46,158,91,.4);color:#4fb477}
.freq-monthly{background:rgba(37,99,235,.15);color:#93c5fd}
.freq-annual{background:rgba(239,68,68,.1);color:#fca5a5}

/* 故障排查 */
.trouble-table{width:100%;border-collapse:collapse}
.trouble-table th{
  background:var(--surface2);color:var(--text);font-size:.83rem;
  padding:14px 16px;text-align:left;border-bottom:2px solid var(--border);
}
.trouble-table td{
  padding:12px 16px;font-size:.83rem;color:var(--text-muted);
  border-bottom:1px solid var(--border);vertical-align:top;line-height:1.6;
}
.trouble-table tr:hover td{background:rgba(46,158,91,.04)}

/* ============================================================
   联系页面
   ============================================================ */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
.contact-info-cards{display:flex;flex-direction:column;gap:20px}
.contact-card{
  background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:24px 28px;display:flex;align-items:flex-start;gap:18px;
  transition:var(--transition);
}
.contact-card:hover{border-color:var(--accent);box-shadow:var(--shadow-accent)}
.contact-card-icon{
  width:48px;height:48px;border-radius:var(--radius);flex-shrink:0;
  background:rgba(46,158,91,.1);display:flex;align-items:center;justify-content:center;
}
.contact-card-icon svg{width:22px;height:22px;stroke:var(--accent)}
.contact-card h4{font-size:.9rem;font-weight:700;color:var(--text);margin-bottom:6px}
.contact-card p,.contact-card a{font-size:.85rem;color:var(--text-muted);line-height:1.7}
.contact-card a:hover{color:var(--accent)}

/* 联系表单 */
.contact-form-wrap{
  background:var(--surface2);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:40px;
}
.contact-form-wrap h3{font-size:1.2rem;font-weight:700;color:var(--text);margin-bottom:8px}
.contact-form-wrap > p{font-size:.85rem;color:var(--text-muted);margin-bottom:30px}
.form-group{margin-bottom:20px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-group label{display:block;font-size:.8rem;font-weight:600;color:var(--text-muted);margin-bottom:8px;letter-spacing:.04em}
.form-group input,.form-group select,.form-group textarea{
  width:100%;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:12px 16px;
  color:var(--text);font-size:.88rem;font-family:inherit;
  transition:var(--transition);
}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{
  outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(46,158,91,.12);
}
.form-group input::placeholder,.form-group textarea::placeholder{color:var(--text-muted);opacity:.6}
.form-group select option{background:var(--surface);color:var(--text)}
.form-group textarea{resize:vertical;min-height:120px}
.form-submit{width:100%;margin-top:8px}

/* ============================================================
   FAQ / 手风琴
   ============================================================ */
.faq-list{display:flex;flex-direction:column;gap:12px;margin-top:40px}
.faq-item{
  background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;transition:var(--transition);
}
.faq-item.open{border-color:rgba(46,158,91,.4)}
.faq-question{
  width:100%;display:flex;align-items:center;justify-content:space-between;
  padding:20px 24px;text-align:left;
  font-size:.95rem;font-weight:600;color:var(--text);
  cursor:pointer;transition:var(--transition);
}
.faq-question:hover{color:var(--accent)}
.faq-question svg{width:20px;height:20px;stroke:var(--accent);flex-shrink:0;transition:var(--transition)}
.faq-item.open .faq-question svg{transform:rotate(180deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease}
.faq-answer-inner{padding:0 24px 20px;font-size:.88rem;color:var(--text-muted);line-height:1.8}
.faq-item.open .faq-answer{max-height:400px}

/* ============================================================
   动画入场
   ============================================================ */
.fade-up{opacity:0;transform:translateY(30px);transition:opacity .6s ease,transform .6s ease}
.fade-up.visible{opacity:1;transform:translateY(0)}
.fade-in{opacity:0;transition:opacity .6s ease}
.fade-in.visible{opacity:1}
.stagger .fade-up:nth-child(1){transition-delay:.05s}
.stagger .fade-up:nth-child(2){transition-delay:.15s}
.stagger .fade-up:nth-child(3){transition-delay:.25s}
.stagger .fade-up:nth-child(4){transition-delay:.35s}
.stagger .fade-up:nth-child(5){transition-delay:.45s}
.stagger .fade-up:nth-child(6){transition-delay:.55s}

/* ============================================================
   响应式
   ============================================================ */
@media(max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .company-intro-content{grid-template-columns:1fr;gap:40px}
  .about-grid{grid-template-columns:1fr;gap:48px}
  .about-img-badge{right:0;bottom:-16px}
  .contact-grid{grid-template-columns:1fr}
  .product-detail-inner{grid-template-columns:1fr}
  .product-detail-img{height:260px}
}
@media(max-width:768px){
  :root{--header-h:64px}
  .nav-list{display:none;position:fixed;top:var(--header-h);left:0;right:0;bottom:0;flex-direction:column;align-items:center;justify-content:center;gap:32px;background:rgba(10,31,56,.97);backdrop-filter:blur(20px);padding:0}
  .nav-list a{color:#c7d6e6}
  .nav-list a:hover,.nav-list a.active{color:var(--white)}
  .nav-list.open{display:flex}
  .menu-toggle{display:flex}
  .nav-phone{display:none}
  .section{padding:70px 0}
  .hero-stats{gap:24px}
  .footer-grid{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .about-features{grid-template-columns:1fr}
  .selection-steps .step-arrow{display:none}
  .page-banner{height:280px}
}
@media(max-width:480px){
  .hero-actions{flex-direction:column}
  .btn{justify-content:center}
  .cta-actions{flex-direction:column;align-items:center}
  .adv-card,.maint-card{padding:24px 20px}
}

/* ============================================================
   博客 / 行业资讯
   ============================================================ */
.blog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px}
.blog-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  overflow:hidden;transition:all .3s;
}
.blog-card:hover{border-color:rgba(46,158,91,.35);transform:translateY(-4px);box-shadow:var(--shadow-accent)}
.blog-card-emoji{
  font-size:2.8rem;padding:32px 24px 16px;text-align:center;
  background:linear-gradient(135deg,rgba(46,158,91,.06),rgba(46,158,91,.02));
}
.blog-card-body{padding:20px 24px 24px}
.blog-card-meta{display:flex;align-items:center;gap:10px;font-size:.78rem;color:var(--text-muted)}
.blog-cat-tag{
  padding:2px 10px;border-radius:12px;font-size:.72rem;font-weight:600;
  background:rgba(46,158,91,.1);color:var(--accent);
}
.blog-read-more{
  font-size:.85rem;font-weight:600;color:var(--accent);transition:var(--transition);
  display:inline-flex;align-items:center;gap:4px;
}
.blog-read-more:hover{color:var(--accent-light);gap:8px}

/* 文章正文 */
.post-content h1{font-size:1.8rem;font-weight:800;margin:32px 0 16px;color:var(--text)}
.post-content h2{font-size:1.4rem;font-weight:700;margin:28px 0 14px;color:var(--text);padding-bottom:8px;border-bottom:1px solid var(--border)}
.post-content h3{font-size:1.15rem;font-weight:700;margin:24px 0 10px;color:var(--accent)}
.post-content p{margin-bottom:14px;line-height:1.8;color:var(--text)}
.post-content ul{margin-bottom:14px;padding-left:20px}
.post-content ul li{list-style:disc;margin-bottom:6px;color:var(--text);line-height:1.7}
.post-content ol li{list-style:decimal;margin-bottom:6px;color:var(--text);line-height:1.7}
.post-content blockquote{
  margin:16px 0;padding:14px 20px;border-left:3px solid var(--accent);
  background:rgba(46,158,91,.06);border-radius:0 var(--radius) var(--radius) 0;
  font-style:italic;color:var(--text-muted);line-height:1.7;
}
.post-content strong{color:var(--accent);font-weight:700}
.post-content code{background:var(--surface2);padding:2px 6px;border-radius:4px;font-size:.88rem;color:var(--accent)}
.post-content hr{border:none;border-top:1px solid var(--border);margin:28px 0}
.post-content table{width:100%;border-collapse:collapse;margin:16px 0;font-size:.88rem}
.post-content td,.post-content th{padding:10px 14px;border:1px solid var(--border);text-align:left}
.post-content th{background:var(--surface2);font-weight:600;color:var(--accent)}

@media(max-width:640px){
  .blog-grid{grid-template-columns:1fr}
}

/* ============================================================
   新版页面组件（校正后）
   ============================================================ */

/* Hero 标签 */
.hero-tags{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:24px}
.hero-tag{
  display:flex;align-items:center;gap:6px;padding:8px 18px;
  background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.25);
  border-radius:50px;font-size:.85rem;color:var(--white);backdrop-filter:blur(6px);
}
.tag-icon{font-size:1.1rem}

/* 优势卡片网格 */
.adv-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
.adv-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:32px 28px;transition:all .3s;
}
.adv-card:hover{border-color:rgba(46,158,91,.3);transform:translateY(-3px);box-shadow:var(--shadow-accent)}
.adv-icon{font-size:2.2rem;margin-bottom:14px}
.adv-card h3{font-size:1.1rem;font-weight:700;margin-bottom:8px;color:var(--text)}
.adv-card p{font-size:.9rem;color:var(--text);line-height:1.7}

/* 产品网格（新版2列） */
.prod-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(360px,1fr));gap:32px;margin-bottom:36px}
.prod-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  overflow:hidden;transition:all .3s;
}
.prod-card:hover{border-color:rgba(46,158,91,.35);transform:translateY(-4px);box-shadow:var(--shadow-accent)}
.prod-img{position:relative;aspect-ratio:1/1;height:auto;overflow:hidden;background:#fff}
.prod-img img{width:100%;height:100%;object-fit:contain;object-position:center;display:block}
.prod-body{padding:20px 24px 28px}
.prod-model{
  display:inline-block;padding:3px 12px;border-radius:12px;font-size:.75rem;font-weight:700;
  background:rgba(46,158,91,.1);color:var(--accent);margin-bottom:8px;
}
.prod-body h3{font-size:1.15rem;font-weight:700;margin-bottom:8px;color:var(--text)}
.prod-body p{font-size:.88rem;color:var(--text);line-height:1.6;margin-bottom:12px}
.prod-specs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.prod-specs span{padding:4px 12px;background:var(--surface2);border-radius:6px;font-size:.78rem;color:var(--text-muted)}
.prod-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}
.prod-tags span{padding:2px 10px;border-radius:4px;font-size:.72rem;background:rgba(46,158,91,.06);color:var(--accent)}
.prod-link{font-size:.85rem;font-weight:600;color:var(--accent)}
.prod-link:hover{color:var(--accent-light)}
.section-cta{text-align:center;margin-top:24px}
.section-cta p{margin-bottom:16px;color:var(--text-muted)}

/* 产品详情（参数表页） */
.prod-nav{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.prod-nav-item{
  padding:10px 24px;border:1px solid var(--border);border-radius:50px;font-size:.9rem;
  color:var(--text-muted);transition:all .3s;text-decoration:none;
}
.prod-nav-item:hover,.prod-nav-item.active{background:rgba(46,158,91,.1);border-color:var(--accent);color:var(--accent)}
.prod-detail{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start;margin-top:32px}
.prod-detail-img{background:rgba(46,158,91,.04);border-radius:var(--radius-lg);overflow:hidden}
.prod-detail-img img{width:100%;object-fit:contain;padding:20px}
.prod-detail-info p{font-size:.95rem;line-height:1.8;color:var(--text);margin-bottom:20px}
.prod-highlights{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:16px}
.highlight{padding:12px 16px;background:var(--surface2);border-radius:var(--radius);border:1px solid var(--border)}
.highlight strong{display:block;font-size:.75rem;color:var(--text-muted);margin-bottom:4px}
.highlight span{font-size:.95rem;font-weight:600;color:var(--text)}
.prod-apps{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.prod-apps span{padding:3px 10px;border-radius:4px;font-size:.75rem;background:rgba(46,158,91,.06);color:var(--accent)}

/* 参数表 */
.table-title{font-size:1.1rem;font-weight:700;margin:36px 0 16px;text-align:center;color:var(--text)}
.table-wrap{overflow-x:auto;margin-bottom:16px}
.param-table{width:100%;border-collapse:collapse;font-size:.88rem}
.param-table th,.param-table td{padding:10px 14px;border:1px solid var(--border);text-align:center}
.param-table th{background:var(--surface2);font-weight:600;color:var(--accent);white-space:nowrap}
.param-table td{color:var(--text)}
.param-table tbody tr:hover{background:rgba(46,158,91,.04)}
.table-note{text-align:center;font-size:.8rem;color:var(--text-muted)}

/* 定制服务卡片 */
.custom-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:20px}
.custom-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:28px 24px;transition:all .3s;text-align:center;
}
.custom-card:hover{border-color:rgba(46,158,91,.3);transform:translateY(-3px)}
.custom-icon{font-size:2rem;display:block;margin-bottom:12px}
.custom-card h3{font-size:1rem;font-weight:700;margin-bottom:8px;color:var(--text)}
.custom-card p{font-size:.85rem;color:var(--text);line-height:1.6}

/* 关于我们 layout */
.about-layout{display:grid;grid-template-columns:1fr 280px;gap:40px;align-items:start}
.about-main blockquote{
  margin:24px 0;padding:18px 24px;border-left:3px solid var(--accent);
  background:rgba(46,158,91,.06);border-radius:0 var(--radius) var(--radius) 0;
  font-style:italic;color:var(--accent);line-height:1.7;font-size:1rem;
}
.about-sidebar .sidebar-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:24px;position:sticky;top:100px;
}
.sidebar-card h4{font-size:.95rem;font-weight:700;margin-bottom:12px;color:var(--accent)}
.sidebar-card p{font-size:.85rem;line-height:1.8;color:var(--text)}
.sidebar-card a{color:var(--accent)}

/* 关于我们简介区 */
.about-brief{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.about-brief-text h2{font-size:1.6rem;font-weight:800;margin-bottom:16px;color:var(--text)}
.about-brief-text p{font-size:.95rem;line-height:1.8;color:var(--text);margin-bottom:14px}
.about-brief-contact{margin:20px 0;display:flex;flex-direction:column;gap:8px}
.brief-contact-item{display:flex;align-items:center;gap:8px;font-size:.9rem;color:var(--text)}
.brief-contact-item a{color:var(--accent);font-weight:600}
.about-brief-img{border-radius:var(--radius-lg);overflow:hidden}
.about-brief-img img{width:100%;height:auto;display:block}

/* 价值观卡片 */
.values-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:24px}
.value-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:28px 24px;transition:all .3s;
}
.value-card:hover{border-color:rgba(46,158,91,.3);transform:translateY(-3px)}
.value-num{font-size:2rem;font-weight:800;color:rgba(46,158,91,.3);margin-bottom:8px;line-height:1}
.value-card h3{font-size:1.05rem;font-weight:700;margin-bottom:8px;color:var(--text)}
.value-card p{font-size:.88rem;color:var(--text);line-height:1.7}

/* 章丘优势卡片 */
.origin-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.origin-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:28px 24px;text-align:center;transition:all .3s;
}
.origin-card:hover{border-color:rgba(46,158,91,.3);transform:translateY(-3px)}
.origin-icon{font-size:2.5rem;display:block;margin-bottom:12px}
.origin-card h3{font-size:1.05rem;font-weight:700;margin-bottom:8px;color:var(--text)}
.origin-card p{font-size:.88rem;color:var(--text);line-height:1.7}

/* 服务承诺 */
.service-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:24px}
.service-item{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:28px 24px;text-align:center;transition:all .3s;
}
.service-item:hover{border-color:rgba(46,158,91,.3);transform:translateY(-3px)}
.service-icon{font-size:2rem;display:block;margin-bottom:12px}
.service-item h3{font-size:1rem;font-weight:700;margin-bottom:8px;color:var(--text)}
.service-item p{font-size:.85rem;color:var(--text);line-height:1.6}

/* 选型步骤 */
.steps-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:24px}
.step-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:28px 24px;transition:all .3s;
}
.step-card:hover{border-color:rgba(46,158,91,.3);transform:translateY(-3px)}
.step-num{font-size:2rem;font-weight:800;color:rgba(46,158,91,.3);margin-bottom:8px;line-height:1}
.step-card h3{font-size:1rem;font-weight:700;margin-bottom:8px;color:var(--text)}
.step-card p{font-size:.88rem;color:var(--text);line-height:1.7}

/* 联系信息卡片 */
.contact-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:24px}
.contact-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:36px 24px;text-align:center;transition:all .3s;position:relative;overflow:hidden;
  display:block;
}
.contact-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  transform:scaleX(0);transform-origin:left;transition:transform .3s;
}
.contact-card:hover{border-color:rgba(21,101,192,.25);transform:translateY(-4px);box-shadow:0 12px 40px rgba(21,101,192,.1)}
.contact-card:hover::before{transform:scaleX(1)}
.contact-card-icon{
  width:56px;height:56px;border-radius:50%;margin:0 auto 16px;
  background:linear-gradient(135deg,rgba(21,101,192,.1),rgba(46,158,91,.1));
  display:flex;align-items:center;justify-content:center;font-size:1.6rem;
}
.contact-card h3{font-size:1rem;font-weight:700;margin-bottom:10px;color:var(--text)}
.contact-card-main{font-size:1.15rem;font-weight:700;color:var(--primary);margin-bottom:6px;word-break:break-all}
.contact-card-main a{color:var(--primary)}
.contact-card-sub{font-size:.82rem;color:var(--text-muted);line-height:1.6}

/* 表单 */
.contact-form{
  max-width:680px;margin:0 auto;
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:40px;
  box-shadow:0 4px 30px rgba(21,101,192,.06);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:.88rem;font-weight:600;color:var(--text);margin-bottom:6px}
.form-group input,.form-group select,.form-group textarea{
  width:100%;padding:12px 16px;border:1.5px solid var(--border);border-radius:var(--radius);
  background:var(--bg);color:var(--text);font-size:.9rem;transition:all .3s;
  font-family:inherit;
}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(21,101,192,.1);
  background:var(--surface);
}
.form-group select option{background:var(--surface);color:var(--text)}
.btn-full{width:100%;justify-content:center;padding:16px;font-size:1rem}
.form-note{text-align:center;margin-top:16px;font-size:.82rem;color:var(--text-muted)}
.form-note a{color:var(--primary);font-weight:600}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:800px;margin:0 auto}
.faq-item{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;transition:all .3s;
}
.faq-item:hover{border-color:rgba(21,101,192,.2)}
.faq-q{
  padding:18px 24px;font-size:.95rem;font-weight:600;color:var(--text);
  cursor:pointer;display:flex;justify-content:space-between;align-items:center;
  transition:color .3s;
}
.faq-q:hover{color:var(--primary)}
.faq-q::after{content:'+';font-size:1.3rem;color:var(--accent);font-weight:400;transition:transform .3s}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .4s ease,padding .4s ease;
  padding:0 24px;font-size:.88rem;color:var(--text-muted);line-height:1.8;
}
.faq-item.open .faq-a{max-height:300px;padding:0 24px 18px}

/* 应用领域网格 */
.app-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:12px}
.app-item{
  display:flex;align-items:center;gap:8px;padding:14px 16px;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  font-size:.88rem;color:var(--text);transition:all .3s;
}
.app-item:hover{border-color:rgba(46,158,91,.3);color:var(--accent)}
.app-icon{font-size:1.2rem}

/* 响应式 */
@media(max-width:900px){
  .prod-detail{grid-template-columns:1fr}
  .about-layout{grid-template-columns:1fr}
  .about-brief{grid-template-columns:1fr}
  .about-brief-img{order:-1}
}
@media(max-width:640px){
  .adv-grid,.prod-grid,.values-grid,.origin-grid,.service-grid,
  .steps-grid,.contact-cards,.custom-grid,.app-grid{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .prod-highlights{grid-template-columns:1fr}
  .hero-tag{font-size:.78rem;padding:6px 14px}
}