/* ==========================================================================
   扬州华凯机械有限公司 · 中文官网样式
   配色：深墨绿主色系（依据 2026-09-01 设计稿）
   ========================================================================== */

/* ---------- 变量 ---------- */
:root{
  --c-primary:#0E6B5C;
  --c-primary-d:#0A4F44;
  --c-primary-l:#12806E;
  --c-accent:#1A9D87;
  --c-tint:#EAF4F1;
  --c-tint-2:#F3F9F7;
  --c-bg:#FFFFFF;
  --c-bg-soft:#F5F7F6;
  --c-line:#E3E9E7;
  --c-text:#22302D;
  --c-text-2:#5A6B67;
  --c-text-3:#8A9995;
  --c-warm:#E8862E;
  --c-white:#FFFFFF;

  --r-sm:6px;
  --r:10px;
  --r-lg:16px;
  --r-pill:999px;

  --sh-1:0 2px 10px rgba(14,107,92,.06);
  --sh-2:0 10px 30px rgba(14,107,92,.10);
  --sh-3:0 18px 50px rgba(10,79,68,.16);

  --maxw:1200px;
  --header-h:76px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans CN","Noto Sans CJK SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease);}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font:inherit;cursor:pointer;border:0;background:none;}
input,textarea,select{font:inherit;color:inherit;}
table{border-collapse:collapse;width:100%;}
figure{margin:0;}

/* ---------- 布局工具 ---------- */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section--soft{background:var(--c-bg-soft);}
.section--tint{background:var(--c-tint-2);}
.section--dark{background:var(--c-primary-d);color:#fff;}
.section--tight{padding:56px 0;}
.text-center{text-align:center;}
.mb-0{margin-bottom:0!important;}

/* ---------- 区块标题 ---------- */
.sec-head{max-width:780px;margin:0 auto 48px;text-align:center;}
.sec-head--left{margin-left:0;text-align:left;}
.eyebrow{
  display:inline-block;
  font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--c-primary);margin-bottom:14px;
}
.eyebrow::before{content:"";display:inline-block;width:22px;height:2px;background:var(--c-accent);vertical-align:middle;margin-right:10px;transform:translateY(-2px);}
.eyebrow--light{color:var(--c-accent);}
.sec-title{font-size:34px;color:var(--c-text);}
.sec-sub{margin-top:16px;font-size:16px;color:var(--c-text-2);}
.section--dark .sec-title{color:#fff;}
.section--dark .sec-sub{color:rgba(255,255,255,.75);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:all .25s var(--ease);
}
.btn-primary{background:var(--c-primary);color:#fff;box-shadow:0 6px 18px rgba(14,107,92,.22);}
.btn-primary:hover{background:var(--c-primary-d);transform:translateY(-2px);box-shadow:0 10px 26px rgba(14,107,92,.30);}
.btn-outline{border:1.5px solid var(--c-primary);color:var(--c-primary);background:transparent;}
.btn-outline:hover{background:var(--c-primary);color:#fff;}
.btn-ghost-light{border:1.5px solid rgba(255,255,255,.5);color:#fff;}
.btn-ghost-light:hover{background:#fff;color:var(--c-primary-d);border-color:#fff;}
.btn-light{background:#fff;color:var(--c-primary-d);box-shadow:0 6px 18px rgba(0,0,0,.12);}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(0,0,0,.18);}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-lg{padding:17px 36px;font-size:16px;}
.btn-arrow::after{content:"→";font-weight:400;transition:transform .25s var(--ease);}
.btn-arrow:hover::after{transform:translateX(4px);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .3s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 4px 24px rgba(14,107,92,.08);}
.header-inner{display:flex;align-items:center;gap:28px;height:var(--header-h);}
.logo{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.logo img{height:42px;width:auto;}
.logo-txt{display:flex;flex-direction:column;line-height:1.15;}
.logo-txt b{font-size:18px;font-weight:800;color:var(--c-primary-d);letter-spacing:.02em;}
.logo-txt span{font-size:9.5px;letter-spacing:.13em;color:var(--c-text-3);font-weight:600;text-transform:uppercase;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.main-nav a{
  position:relative;padding:9px 14px;border-radius:var(--r-sm);
  font-size:15px;font-weight:500;color:var(--c-text);white-space:nowrap;
}
.main-nav a:hover{color:var(--c-primary);background:var(--c-tint);}
.main-nav a.active{color:var(--c-primary);font-weight:700;}
.main-nav a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--c-primary);border-radius:2px;
}
.header-cta{flex-shrink:0;}
.nav-toggle{display:none;width:44px;height:44px;border-radius:8px;margin-left:auto;position:relative;}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:11px;width:22px;height:2px;background:var(--c-text);border-radius:2px;
  transition:transform .25s var(--ease),opacity .2s;
}
.nav-toggle span{top:21px;}
.nav-toggle span::before{content:"";top:-7px;left:0;}
.nav-toggle span::after{content:"";top:7px;left:0;}
.nav-toggle.is-open span{background:transparent;}
.nav-toggle.is-open span::before{transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span::after{transform:translateY(-7px) rotate(-45deg);}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(900px 520px at 88% 8%,rgba(26,157,135,.13),transparent 62%),
    linear-gradient(160deg,#FFFFFF 0%,#F3F9F7 58%,#EAF4F1 100%);
  padding:76px 0 84px;
}
.hero::after{
  content:"";position:absolute;right:-140px;top:-140px;width:520px;height:520px;
  border-radius:50%;background:radial-gradient(circle,rgba(14,107,92,.09),transparent 68%);pointer-events:none;
}
.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center;position:relative;z-index:1;}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;
  padding:8px 16px;border-radius:var(--r-pill);
  background:rgba(14,107,92,.09);border:1px solid rgba(14,107,92,.18);
  font-size:13px;font-weight:600;color:var(--c-primary-d);margin-bottom:22px;
}
.hero-badge svg{flex-shrink:0;}
.hero h1{font-size:50px;line-height:1.18;color:var(--c-primary-d);letter-spacing:-.02em;}
.hero h1 em{font-style:normal;color:var(--c-primary);position:relative;}
.hero h1 em::after{
  content:"";position:absolute;left:0;right:0;bottom:6px;height:10px;
  background:rgba(26,157,135,.18);z-index:-1;border-radius:3px;
}
.hero-desc{margin-top:22px;font-size:17px;line-height:1.85;color:var(--c-text-2);max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero-media{position:relative;}
.hero-media img{
  width:100%;border-radius:var(--r-lg);box-shadow:var(--sh-3);object-fit:cover;aspect-ratio:4/3;
}
.hero-media::before{
  content:"";position:absolute;inset:18px -18px -18px 18px;border-radius:var(--r-lg);
  border:2px solid rgba(14,107,92,.18);z-index:-1;
}
.hero-tag{
  position:absolute;left:-14px;bottom:26px;
  background:#fff;border-radius:var(--r);box-shadow:var(--sh-2);
  padding:14px 20px;display:flex;align-items:center;gap:12px;
}
.hero-tag b{display:block;font-size:22px;color:var(--c-primary);line-height:1;}
.hero-tag span{font-size:12.5px;color:var(--c-text-2);}

/* ---------- 信任条 ---------- */
.trustbar{background:var(--c-primary-d);color:#fff;}
.trustbar ul{display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;padding:18px 0;}
.trustbar li{display:flex;align-items:center;gap:9px;font-size:14.5px;color:rgba(255,255,255,.92);}
.trustbar li::before{content:"★";color:var(--c-accent);font-size:13px;}

/* ---------- 数据条 ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0;}
.stat{padding:14px 24px;text-align:center;border-right:1px solid var(--c-line);}
.stat:last-child{border-right:0;}
.stat b{display:block;font-size:44px;font-weight:800;color:var(--c-primary);line-height:1.1;letter-spacing:-.02em;}
.stat b small{font-size:20px;font-weight:700;margin-left:2px;}
.stat span{display:block;margin-top:8px;font-size:14.5px;color:var(--c-text-2);}

/* ---------- 卡片网格 ---------- */
.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);}

.card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r);
  overflow:hidden;transition:all .3s var(--ease);display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-5px);box-shadow:var(--sh-2);border-color:rgba(14,107,92,.25);}
.card-media{position:relative;aspect-ratio:4/3;background:var(--c-bg-soft);overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.card:hover .card-media img{transform:scale(1.05);}
.card-media .badge{
  position:absolute;left:12px;top:12px;z-index:2;
  background:rgba(10,79,68,.86);color:#fff;font-size:12px;font-weight:600;
  padding:5px 11px;border-radius:var(--r-pill);backdrop-filter:blur(4px);
}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;}
.card-body h3{font-size:18.5px;color:var(--c-text);margin-bottom:8px;}
.card-body .model{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.04em;
  color:var(--c-primary);background:var(--c-tint);padding:3px 9px;border-radius:4px;
  margin-bottom:12px;align-self:flex-start;
}
.card-body p{font-size:14.5px;color:var(--c-text-2);line-height:1.75;flex:1;}
.card-body .spec-list{margin-top:14px;padding-top:14px;border-top:1px dashed var(--c-line);}
.card-body .spec-list li{display:flex;justify-content:space-between;gap:10px;font-size:13.5px;color:var(--c-text-2);padding:3px 0;}
.card-body .spec-list li b{color:var(--c-text);font-weight:600;}

/* ---------- 应用领域标签 ---------- */
.pill-list{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;}
.pill{
  display:inline-flex;align-items:center;gap:9px;
  padding:13px 22px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--c-line);
  font-size:15px;font-weight:500;color:var(--c-text);
  transition:all .25s var(--ease);
}
.pill::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--c-accent);flex-shrink:0;}
.pill:hover{border-color:var(--c-primary);color:var(--c-primary);box-shadow:var(--sh-1);transform:translateY(-2px);}
.section--dark .pill{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.16);color:rgba(255,255,255,.92);}

/* ---------- 页面头部（内页 banner） ---------- */
.page-hero{
  position:relative;padding:72px 0 68px;overflow:hidden;
  background:
    radial-gradient(760px 420px at 82% 0%,rgba(26,157,135,.16),transparent 66%),
    linear-gradient(155deg,#0A4F44 0%,#0E6B5C 62%,#12806E 100%);
  color:#fff;
}
.page-hero::before{
  content:"";position:absolute;right:-90px;bottom:-120px;width:420px;height:420px;border-radius:50%;
  border:60px solid rgba(255,255,255,.045);
}
.page-hero .eyebrow{color:rgba(255,255,255,.65);}
.page-hero .eyebrow::before{background:var(--c-accent);}
.page-hero h1{font-size:42px;color:#fff;letter-spacing:-.02em;}
.page-hero p{margin-top:16px;font-size:16.5px;color:rgba(255,255,255,.82);max-width:720px;}
.breadcrumb{margin-top:26px;font-size:13.5px;color:rgba(255,255,255,.6);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb span{margin:0 8px;opacity:.5;}

/* ---------- 公司故事 / 两栏图文 ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.split--reverse .split-media{order:2;}
.split-media{position:relative;}
.split-media img{width:100%;border-radius:var(--r-lg);box-shadow:var(--sh-2);object-fit:cover;}
.split-media .float-card{
  position:absolute;right:-18px;bottom:-18px;background:#fff;border-radius:var(--r);
  box-shadow:var(--sh-2);padding:20px 24px;max-width:220px;
}
.split-media .float-card b{display:block;font-size:32px;color:var(--c-primary);line-height:1.1;}
.split-media .float-card span{font-size:13px;color:var(--c-text-2);}
.split-body h2{font-size:31px;color:var(--c-text);}
.split-body p{margin-top:18px;font-size:16px;color:var(--c-text-2);line-height:1.9;}
.ticks{margin-top:26px;display:grid;gap:12px;}
.ticks li{display:flex;gap:11px;align-items:flex-start;font-size:15.5px;color:var(--c-text);}
.ticks li::before{
  content:"";flex-shrink:0;width:20px;height:20px;margin-top:4px;border-radius:50%;
  background:var(--c-tint) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230E6B5C' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center/13px no-repeat;
}

/* ---------- 优势卡 ---------- */
.adv-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r);
  padding:32px 28px;transition:all .3s var(--ease);height:100%;
}
.adv-card:hover{transform:translateY(-5px);box-shadow:var(--sh-2);border-color:rgba(14,107,92,.25);}
.adv-icon{
  width:52px;height:52px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--c-primary),var(--c-accent));margin-bottom:20px;
}
.adv-icon svg{width:26px;height:26px;stroke:#fff;}
.adv-card h3{font-size:18.5px;margin-bottom:10px;}
.adv-card p{font-size:14.8px;color:var(--c-text-2);line-height:1.8;}

/* ---------- 客户 logo ---------- */
.client-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;align-items:center;}
.client-logo{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r);
  padding:24px;display:flex;align-items:center;justify-content:center;min-height:104px;
  transition:all .3s var(--ease);filter:grayscale(1);opacity:.72;
}
.client-logo:hover{filter:none;opacity:1;box-shadow:var(--sh-1);transform:translateY(-3px);}
.client-logo img{max-height:52px;width:auto;object-fit:contain;}

/* ---------- 工艺流程 ---------- */
.flow{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;counter-reset:flow;}
.flow-item{position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--r);padding:30px 22px 26px;}
.flow-item::before{
  counter-increment:flow;content:"0" counter(flow);
  position:absolute;top:-16px;left:22px;
  width:40px;height:40px;border-radius:50%;
  background:var(--c-primary);color:#fff;font-size:15px;font-weight:700;
  display:flex;align-items:center;justify-content:center;box-shadow:0 6px 16px rgba(14,107,92,.28);
}
.flow-item h4{margin-top:14px;font-size:16.5px;}
.flow-item p{margin-top:9px;font-size:14px;color:var(--c-text-2);line-height:1.75;}

/* ---------- 图库 ---------- */
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.gallery figure{position:relative;border-radius:var(--r);overflow:hidden;aspect-ratio:4/3;background:var(--c-bg-soft);}
.gallery img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.gallery figure:hover img{transform:scale(1.06);}
.gallery figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:26px 16px 13px;
  background:linear-gradient(transparent,rgba(10,79,68,.82));color:#fff;font-size:13.5px;font-weight:500;
}
.gallery--wide{grid-template-columns:repeat(2,1fr);}

/* ---------- 视频 ---------- */
.video-box{position:relative;width:100%;padding-bottom:56.25%;border-radius:var(--r-lg);overflow:hidden;background:#0A4F44;box-shadow:var(--sh-3);}
.video-box iframe{position:absolute;inset:0;width:100%;height:100%;border:0;}
.video-box iframe,.video-box img{width:100%;height:100%;border:0;object-fit:cover;display:block;}
.video-cover{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;cursor:pointer;background-size:cover;background-position:center;}
.video-cover::after{content:"";position:absolute;inset:0;background:rgba(10,79,68,.34);transition:background .3s;}
.video-cover:hover::after{background:rgba(10,79,68,.18);}
.play-btn{
  position:relative;z-index:2;width:82px;height:82px;border-radius:50%;
  background:rgba(255,255,255,.94);display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 34px rgba(0,0,0,.3);transition:transform .3s var(--ease);
}
.video-cover:hover .play-btn{transform:scale(1.08);}
.play-btn::before{content:"";border-left:20px solid var(--c-primary);border-top:12px solid transparent;border-bottom:12px solid transparent;margin-left:6px;}

/* ---------- 双视频并列 ---------- */
.video-grid-2{display:flex;gap:20px;max-width:1100px;margin:0 auto;flex-wrap:wrap;}
.video-grid-2 .video-box{flex:1 1 360px;margin:0;}
@media (max-width:680px){.video-grid-2{gap:14px;}.video-grid-2 .video-box{flex:1 1 100%;}}


/* ---------- 证书网格 ---------- */
.cert-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r);overflow:hidden;
  transition:all .3s var(--ease);display:flex;flex-direction:column;
}
.cert-card:hover{transform:translateY(-5px);box-shadow:var(--sh-2);}
.cert-card .cert-img{aspect-ratio:4/3;background:#fff;padding:20px;display:flex;align-items:center;justify-content:center;border-bottom:1px solid var(--c-line);}
.cert-card .cert-img img{max-width:100%;max-height:100%;object-fit:contain;}
.cert-card .cert-body{padding:20px 20px 22px;flex:1;}
.cert-card h3{font-size:16.5px;margin-bottom:7px;}
.cert-card p{font-size:13.8px;color:var(--c-text-2);line-height:1.7;}
.patent-box{
  display:grid;grid-template-columns:auto 1fr;gap:36px;align-items:center;
  background:#fff;border:1px solid var(--c-line);border-left:4px solid var(--c-primary);
  border-radius:var(--r);padding:34px 38px;box-shadow:var(--sh-1);
}
.patent-box img{width:210px;border-radius:var(--r-sm);box-shadow:var(--sh-1);}
.patent-box h3{font-size:22px;margin-bottom:10px;}
.patent-box .patent-no{
  display:inline-block;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:15px;font-weight:700;color:var(--c-primary);
  background:var(--c-tint);padding:5px 13px;border-radius:var(--r-sm);margin-bottom:14px;letter-spacing:.02em;
}
.patent-box p{font-size:15px;color:var(--c-text-2);line-height:1.85;}

/* ---------- 产品页：筛选 + 表格 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:44px;}
.filter-btn{
  padding:11px 24px;border-radius:var(--r-pill);border:1px solid var(--c-line);
  background:#fff;font-size:14.5px;font-weight:500;color:var(--c-text-2);transition:all .25s var(--ease);
}
.filter-btn:hover{border-color:var(--c-primary);color:var(--c-primary);}
.filter-btn.active{background:var(--c-primary);border-color:var(--c-primary);color:#fff;font-weight:600;box-shadow:0 6px 18px rgba(14,107,92,.22);}

.table-wrap{overflow-x:auto;border:1px solid var(--c-line);border-radius:var(--r);background:#fff;}
table.spec-table{min-width:760px;font-size:14.5px;}
table.spec-table thead th{
  background:var(--c-primary-d);color:#fff;font-weight:600;font-size:14px;
  padding:15px 18px;text-align:left;white-space:nowrap;
}
table.spec-table tbody td{padding:14px 18px;border-bottom:1px solid var(--c-line);color:var(--c-text-2);}
table.spec-table tbody tr:last-child td{border-bottom:0;}
table.spec-table tbody tr:hover td{background:var(--c-tint-2);}
table.spec-table tbody td b{color:var(--c-text);font-weight:700;}
table.spec-table .tag{display:inline-block;font-size:12.5px;font-weight:600;color:var(--c-primary);background:var(--c-tint);padding:3px 10px;border-radius:var(--r-pill);}

/* ---------- FAQ 折叠 ---------- */
.faq-list{max-width:900px;margin:0 auto;display:grid;gap:14px;}
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:var(--r);overflow:hidden;transition:all .3s var(--ease);}
.faq-item.is-open{border-color:rgba(14,107,92,.35);box-shadow:var(--sh-2);}
.faq-q{
  width:100%;display:flex;align-items:flex-start;gap:16px;text-align:left;
  padding:22px 26px;font-size:16.5px;font-weight:600;color:var(--c-text);line-height:1.6;
}
.faq-q .idx{
  flex-shrink:0;width:28px;height:28px;border-radius:8px;background:var(--c-tint);color:var(--c-primary);
  font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:1px;
}
.faq-item.is-open .faq-q .idx{background:var(--c-primary);color:#fff;}
.faq-q .q-text{flex:1;}
.faq-q .chev{
  flex-shrink:0;width:22px;height:22px;margin-top:3px;position:relative;transition:transform .3s var(--ease);
}
.faq-q .chev::before,.faq-q .chev::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-primary);border-radius:2px;transform:translate(-50%,-50%);
}
.faq-q .chev::before{width:14px;height:2px;}
.faq-q .chev::after{width:2px;height:14px;transition:opacity .25s;}
.faq-item.is-open .chev::after{opacity:0;}
.faq-item.is-open .chev{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .38s var(--ease);}
.faq-a-inner{padding:0 26px 24px 70px;font-size:15px;color:var(--c-text-2);line-height:1.9;}

/* ---------- 联系页 ---------- */
.contact-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.contact-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r);
  padding:30px 26px;text-align:center;transition:all .3s var(--ease);
}
.contact-card:hover{transform:translateY(-5px);box-shadow:var(--sh-2);border-color:rgba(14,107,92,.25);}
.contact-card .cc-icon{
  width:54px;height:54px;margin:0 auto 18px;border-radius:15px;
  background:var(--c-tint);display:flex;align-items:center;justify-content:center;
}
.contact-card .cc-icon svg{width:25px;height:25px;stroke:var(--c-primary);}
.contact-card h3{font-size:13px;letter-spacing:.14em;color:var(--c-text-3);font-weight:700;text-transform:uppercase;}
.contact-card .cc-main{margin-top:12px;font-size:17px;font-weight:700;color:var(--c-text);line-height:1.6;word-break:break-all;}
.contact-card .cc-main a:hover{color:var(--c-primary);}
.contact-card .cc-note{margin-top:8px;font-size:13.5px;color:var(--c-text-3);}

.contact-main{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:start;}
.form-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);padding:38px 36px;box-shadow:var(--sh-1);}
.form-card h3{font-size:23px;margin-bottom:8px;}
.form-card .form-hint{font-size:14.5px;color:var(--c-text-2);margin-bottom:26px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{margin-bottom:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--c-text);margin-bottom:8px;}
.field label .req{color:#D64545;margin-left:3px;}
.field input,.field textarea,.field select{
  width:100%;padding:13px 15px;border:1px solid var(--c-line);border-radius:var(--r-sm);
  background:#FBFCFC;font-size:15px;transition:all .2s var(--ease);
}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:0;border-color:var(--c-primary);background:#fff;box-shadow:0 0 0 3px rgba(14,107,92,.10);
}
.field textarea{resize:vertical;min-height:118px;line-height:1.7;}
.form-note{font-size:13px;color:var(--c-text-3);margin-top:6px;}
.form-card .btn{width:100%;margin-top:8px;}

.map-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);}
.map-card .map-head{padding:24px 26px 20px;}
.map-card .map-head h3{font-size:19px;margin-bottom:8px;}
.map-card .map-head p{font-size:14.5px;color:var(--c-text-2);line-height:1.75;}
#baidu-map,#map-fallback{width:100%;height:340px;background:var(--c-bg-soft);display:block;border:0;}
.map-actions{padding:20px 26px 24px;display:flex;flex-wrap:wrap;gap:12px;}
.map-actions .btn{flex:1;min-width:150px;}

/* ---------- CTA ---------- */
.cta{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:linear-gradient(135deg,#0A4F44,#12806E);color:#fff;
  padding:56px 60px;display:grid;grid-template-columns:1fr auto;gap:36px;align-items:center;
}
.cta::before{
  content:"";position:absolute;right:-70px;top:-70px;width:280px;height:280px;border-radius:50%;
  border:44px solid rgba(255,255,255,.06);
}
.cta h2{font-size:29px;color:#fff;}
.cta p{margin-top:12px;font-size:15.5px;color:rgba(255,255,255,.8);max-width:640px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:1;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-primary-d);color:rgba(255,255,255,.78);padding:64px 0 0;font-size:14.5px;}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr 1.2fr;gap:48px;padding-bottom:44px;}
.footer-brand .f-logo{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand .f-logo .f-mark{
  width:44px;height:44px;border-radius:12px;background:#fff;display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:800;color:var(--c-primary-d);letter-spacing:-.03em;
}
.footer-brand .f-logo b{display:block;font-size:18px;color:#fff;line-height:1.25;}
.footer-brand .f-logo span{font-size:9.5px;letter-spacing:.14em;color:rgba(255,255,255,.5);text-transform:uppercase;}
.footer-brand p{line-height:1.9;max-width:340px;color:rgba(255,255,255,.66);}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:18px;font-weight:700;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a:hover{color:#fff;}
.footer-contact li{display:flex;gap:10px;line-height:1.7;align-items:flex-start;color:rgba(255,255,255,.72);}
.footer-contact li b{color:rgba(255,255,255,.9);font-weight:600;}
.footer-contact svg{flex-shrink:0;margin-top:5px;opacity:.7;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px 26px;align-items:center;justify-content:space-between;
  font-size:13.5px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.65);}
.footer-bottom a:hover{color:#fff;}
.footer-bottom .legal{display:flex;flex-wrap:wrap;gap:20px;align-items:center;}
.beian-item{display:inline-flex;align-items:center;gap:6px;}
.beian-item img{height:16px;width:16px;object-fit:contain;border-radius:2px;}

/* ---------- 页脚上方浮动咨询条 ---------- */
.back-top{
  position:fixed;right:26px;bottom:26px;z-index:900;
  width:46px;height:46px;border-radius:12px;background:var(--c-primary);color:#fff;
  display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-2);
  opacity:0;visibility:hidden;transform:translateY(10px);transition:all .3s var(--ease);
}
.back-top.is-show{opacity:1;visibility:visible;transform:none;}
.back-top:hover{background:var(--c-primary-d);}

/* ---------- 滚动入场动画 ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
.reveal[data-delay="1"]{transition-delay:.08s;}
.reveal[data-delay="2"]{transition-delay:.16s;}
.reveal[data-delay="3"]{transition-delay:.24s;}
.reveal[data-delay="4"]{transition-delay:.32s;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  html{scroll-behavior:auto;}
}

/* ---------- 面包屑内页锚点偏移 ---------- */
:target{scroll-margin-top:100px;}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width:1080px){
  .hero h1{font-size:42px;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .flow{grid-template-columns:repeat(3,1fr);}
  .gallery{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .patent-box{grid-template-columns:1fr;gap:24px;}
  .patent-box img{width:180px;}
}

@media (max-width:960px){
  .main-nav{
    position:fixed;left:0;right:0;top:var(--header-h);
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--c-line);
    padding:10px 16px 20px;box-shadow:0 16px 40px rgba(10,79,68,.12);
    transform:translateY(-12px);opacity:0;visibility:hidden;transition:all .28s var(--ease);
    max-height:calc(100vh - var(--header-h));overflow-y:auto;
  }
  .main-nav.is-open{transform:none;opacity:1;visibility:visible;}
  .main-nav a{padding:14px 12px;border-bottom:1px solid var(--c-line);border-radius:0;font-size:16px;}
  .main-nav a.active::after{display:none;}
  .main-nav a.active{background:var(--c-tint);}
  .nav-toggle{display:block;}
  .header-cta{display:none;}

  .hero{padding:56px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero h1{font-size:36px;}
  .hero-desc{font-size:16px;}
  .hero-media::before{display:none;}
  .hero-tag{left:16px;bottom:16px;}

  .trustbar ul{justify-content:flex-start;gap:12px 26px;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .stat{border-right:0;border-bottom:1px solid var(--c-line);padding:20px 16px;}
  .stat:nth-child(odd){border-right:1px solid var(--c-line);}
  .stat:nth-last-child(-n+2){border-bottom:0;}
  .stat b{font-size:36px;}

  .section{padding:64px 0;}
  .sec-title{font-size:27px;}
  .page-hero h1{font-size:32px;}
  .page-hero{padding:56px 0 52px;}

  .split{grid-template-columns:1fr;gap:36px;}
  .split--reverse .split-media{order:0;}
  .split-media .float-card{right:16px;bottom:-16px;padding:16px 18px;}
  .split-body h2{font-size:25px;}

  .grid-3,.grid-2{grid-template-columns:1fr;}
  .client-grid{grid-template-columns:repeat(2,1fr);}
  .flow{grid-template-columns:1fr 1fr;}
  .contact-cards{grid-template-columns:1fr;}
  .contact-main{grid-template-columns:1fr;}
  .cta{grid-template-columns:1fr;padding:40px 32px;gap:26px;}
  .cta h2{font-size:24px;}
  .form-card{padding:28px 22px;}
  .footer-grid{grid-template-columns:1fr;gap:34px;}
  .faq-a-inner{padding-left:26px;}
}

@media (max-width:560px){
  .container{padding:0 18px;}
  .hero h1{font-size:29px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .sec-title{font-size:23px;}
  .page-hero h1{font-size:27px;}
  .grid-4,.client-grid,.flow,.gallery{grid-template-columns:1fr;}
  .gallery--wide{grid-template-columns:1fr;}
  .form-row{grid-template-columns:1fr;}
  .stat b{font-size:32px;}
  .stats{grid-template-columns:1fr;}
  .stat{border-right:0!important;}
  .stat:nth-last-child(-n+2){border-bottom:1px solid var(--c-line);}
  .stat:last-child{border-bottom:0;}
  .pill{padding:11px 16px;font-size:14px;}
  .video-box{padding-bottom:75%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .back-top{right:14px;bottom:14px;}
}

/* ---------- 产品中心：型号参数小标题 ---------- */
.spec-caption{
  font-size:19px;font-weight:700;color:var(--c-text);line-height:1.3;
  margin:56px 0 20px;padding-left:14px;border-left:4px solid var(--c-primary);
}

/* ---------- 联系方式：售后服务微信 ---------- */
.wechat-card{
  display:grid;grid-template-columns:1.25fr .75fr;gap:44px;align-items:center;
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:46px 48px;box-shadow:var(--sh-1);
}
.wechat-body h2{font-size:26px;margin:10px 0 14px;}
.wechat-body p{font-size:15.5px;color:var(--c-text-2);line-height:1.85;}
.wechat-body p b{color:var(--c-primary);}
.wechat-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.wechat-qr{display:flex;flex-direction:column;align-items:center;gap:12px;}
.wechat-qr img{
  width:100%;max-width:230px;padding:10px;background:#fff;
  border:1px solid var(--c-line);border-radius:var(--r);box-shadow:var(--sh-1);
}
.wechat-qr span{font-size:13.5px;color:var(--c-text-3);letter-spacing:.04em;}
@media (max-width:900px){
  .wechat-card{grid-template-columns:1fr;padding:30px 22px;gap:26px;}
  .wechat-qr img{max-width:200px;}
}