/* ============================================================
   广东深中水环保有限公司 企业官网样式
   简约大气 · 商务蓝 + 生态绿 · 浅色主题
   ============================================================ */
:root{
  --primary:#0d6dad;
  --primary-dark:#0a4e80;
  --primary-deep:#0b3a63;
  --primary-light:#eaf3fa;
  --accent:#17a57e;
  --accent-light:#e7f6f1;
  --dark:#0e2a47;
  --text:#33404e;
  --muted:#6d7b8c;
  --border:#e5ebf1;
  --bg-soft:#f5f8fb;
  --white:#ffffff;
  --radius:10px;
  --shadow-sm:0 2px 8px rgba(13,80,130,.06);
  --shadow-md:0 8px 24px rgba(13,80,130,.10);
  --shadow-lg:0 16px 40px rgba(13,80,130,.14);
  --font:"PingFang SC","Microsoft YaHei","Helvetica Neue",Helvetica,Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--text);background:var(--white);font-size:15px;line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s}
ul{list-style:none}
h1,h2,h3,h4{color:var(--primary-deep);line-height:1.35;font-weight:700}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
::selection{background:var(--primary);color:#fff}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:6px;font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;transition:all .25s cubic-bezier(.16,1,.3,1);line-height:1.4}
.btn:active{transform:scale(.98)}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-outline{border-color:rgba(255,255,255,.65);color:#fff}
.btn-outline:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}
.btn-ghost{border-color:var(--primary);color:var(--primary)}
.btn-ghost:hover{background:var(--primary);color:#fff}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#0f8a68;transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-sm{padding:8px 18px;font-size:14px}
.btn-lg{padding:14px 36px;font-size:16px}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--primary-deep);color:#cfe2f2;font-size:13px}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;height:38px}
.topbar-item{display:inline-flex;align-items:center;gap:6px}
.topbar-right{display:flex;gap:24px}
.topbar svg{opacity:.85}

/* ---------- 头部导航 ---------- */
.header{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;transition:box-shadow .3s}
.header.scrolled{box-shadow:var(--shadow-sm)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:76px}
.logo{display:flex;align-items:center;gap:12px}
.logo img{height:44px;width:auto}
.logo-text{display:flex;flex-direction:column;line-height:1.25}
.logo-text strong{font-size:20px;color:var(--primary-deep);letter-spacing:1px;font-weight:800}
.logo-text small{font-size:11px;color:var(--muted);letter-spacing:.5px}
.nav{display:flex;gap:6px}
.nav a{padding:10px 16px;font-size:15px;font-weight:600;color:var(--text);border-radius:6px;position:relative}
.nav a:hover{color:var(--primary)}
.nav a.active{color:var(--primary)}
.nav a.active::after{content:"";position:absolute;left:16px;right:16px;bottom:4px;height:3px;border-radius:2px;background:var(--primary)}
.header-actions{display:flex;align-items:center;gap:14px}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.nav-toggle span{width:24px;height:2px;background:var(--primary-deep);border-radius:2px;transition:.3s}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-mask{position:fixed;inset:0;background:rgba(10,30,50,.5);z-index:98;opacity:0;pointer-events:none;transition:opacity .3s}
.mobile-mask.show{opacity:1;pointer-events:auto}

/* ---------- Hero 轮播 ---------- */
.hero{position:relative;overflow:hidden;min-height:560px;display:flex;align-items:center}
.hero-slide{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;transition:opacity .8s ease;display:flex;align-items:center}
.hero-slide.active{opacity:1}
.hero-slide::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(10,32,58,.82) 0%,rgba(10,44,78,.62) 45%,rgba(10,44,78,.18) 100%)}
.hero-content{position:relative;z-index:2;max-width:640px;padding:40px 0}
.hero-kicker{display:inline-flex;align-items:center;gap:8px;color:#9fd4f2;font-size:14px;letter-spacing:2px;margin-bottom:18px;text-transform:uppercase}
.hero-kicker::before{content:"";width:36px;height:2px;background:var(--accent)}
.hero-content h1{color:#fff;font-size:44px;line-height:1.3;font-weight:800;letter-spacing:1px;margin-bottom:18px}
.hero-content p{color:#d7e6f3;font-size:17px;margin-bottom:32px;max-width:520px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-dots{position:absolute;bottom:34px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:3}
.hero-dots button{width:12px;height:12px;border-radius:50%;border:0;background:rgba(255,255,255,.4);cursor:pointer;transition:.3s}
.hero-dots button.active{background:#fff;transform:scale(1.2)}

/* ---------- 通用区块 ---------- */
.section{padding:84px 0}
.section-soft{background:var(--bg-soft)}
.section-head{text-align:center;max-width:680px;margin:0 auto 52px}
.section-tag{display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-size:14px;font-weight:600;letter-spacing:2px;margin-bottom:14px}
.section-tag::before,.section-tag::after{content:"";width:24px;height:1px;background:var(--primary)}
.section-head h2{font-size:34px;font-weight:800;margin-bottom:14px;letter-spacing:1px}
.section-head p{color:var(--muted);font-size:15px}

/* 面包屑 */
.page-banner{position:relative;background:linear-gradient(120deg,var(--primary-deep) 0%,var(--primary) 100%);padding:72px 0 60px;color:#fff;overflow:hidden}
.page-banner::after{content:"";position:absolute;right:-80px;top:-80px;width:340px;height:340px;border-radius:50%;background:rgba(255,255,255,.06)}
.page-banner h1{color:#fff;font-size:36px;margin-bottom:10px;letter-spacing:2px}
.page-banner p{color:#c8dfef;max-width:720px;font-size:15px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:#9fc4dd;margin-top:14px;flex-wrap:wrap}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{opacity:.6}

/* ---------- 首页：主营业务 ---------- */
.biz-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.biz-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:34px 26px;text-align:center;transition:all .3s cubic-bezier(.16,1,.3,1);position:relative;overflow:hidden}
.biz-card::before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:linear-gradient(90deg,var(--primary),var(--accent));opacity:0;transition:.3s}
.biz-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:transparent}
.biz-card:hover::before{opacity:1}
.biz-icon{width:72px;height:72px;margin:0 auto 20px;border-radius:18px;background:var(--primary-light);display:flex;align-items:center;justify-content:center}
.biz-card:nth-child(2) .biz-icon{background:var(--accent-light)}
.biz-card:nth-child(3) .biz-icon{background:#fdf0e6}
.biz-card:nth-child(4) .biz-icon{background:#eee9fb}
.biz-icon svg{width:36px;height:36px;color:var(--primary)}
.biz-card:nth-child(2) .biz-icon svg{color:var(--accent)}
.biz-card:nth-child(3) .biz-icon svg{color:#e08a3c}
.biz-card:nth-child(4) .biz-icon svg{color:#7a5cd6}
.biz-card h3{font-size:18px;margin-bottom:12px}
.biz-card p{font-size:14px;color:var(--muted)}
.biz-card .biz-more{display:inline-flex;align-items:center;gap:6px;margin-top:16px;color:var(--primary);font-size:14px;font-weight:600}
.biz-card .biz-more svg{transition:transform .3s}
.biz-card:hover .biz-more svg{transform:translateX(4px)}

/* ---------- 首页：关于摘要 ---------- */
.about-split{display:grid;grid-template-columns:1.05fr 1fr;gap:60px;align-items:center}
.about-split .section-head{text-align:left;margin:0 0 26px}
.about-split .section-tag::before{display:none}
.about-split .section-tag::after{content:"";width:24px;height:1px;background:var(--primary)}
.about-text p{color:var(--muted);margin-bottom:16px}
.about-points{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:26px 0}
.about-points li{display:flex;align-items:center;gap:10px;font-size:14px;font-weight:600;color:var(--text)}
.about-points svg{width:20px;height:20px;color:var(--accent);flex-shrink:0}
.about-img{position:relative}
.about-img img{border-radius:16px;box-shadow:var(--shadow-lg);width:100%}
.about-img::before{content:"";position:absolute;inset:-18px 18px 18px -18px;border:3px solid var(--primary-light);border-radius:16px;z-index:-1}
.about-badge{position:absolute;right:-14px;bottom:26px;background:var(--primary);color:#fff;border-radius:14px;padding:18px 22px;text-align:center;box-shadow:var(--shadow-lg)}
.about-badge strong{display:block;font-size:30px;font-weight:800;line-height:1.1}
.about-badge span{font-size:12px;opacity:.9}

/* ---------- 首页：产品分类 ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.cat-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:26px 22px;display:flex;gap:16px;align-items:center;transition:all .3s}
.cat-card:hover{border-color:var(--primary);transform:translateY(-4px);box-shadow:var(--shadow-md)}
.cat-num{width:52px;height:52px;border-radius:14px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:800;flex-shrink:0}
.cat-card h3{font-size:16px;margin-bottom:4px}
.cat-card p{font-size:13px;color:var(--muted);line-height:1.5}

/* ---------- 产品卡片 ---------- */
.products-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.product-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:all .3s cubic-bezier(.16,1,.3,1);display:flex;flex-direction:column}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:transparent}
.product-thumb{aspect-ratio:4/3;overflow:hidden;position:relative;background:var(--bg-soft)}
.product-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.16,1,.3,1)}
.product-card:hover .product-thumb img{transform:scale(1.06)}
.product-tags{position:absolute;top:12px;left:12px;display:flex;gap:6px}
.tag{font-size:11px;padding:3px 10px;border-radius:20px;color:#fff;font-weight:600}
.tag-hot{background:#e8553c}
.tag-new{background:var(--accent)}
.product-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.product-body h3{font-size:16px;margin-bottom:8px;line-height:1.45}
.product-body h3 a:hover{color:var(--primary)}
.product-meta{font-size:13px;color:var(--muted);margin-bottom:10px;display:flex;gap:14px;flex-wrap:wrap}
.product-meta span{display:inline-flex;align-items:center;gap:5px}
.product-summary{font-size:13.5px;color:var(--muted);line-height:1.6;margin-bottom:14px;flex:1}
.product-foot{display:flex;justify-content:space-between;align-items:center;border-top:1px dashed var(--border);padding-top:14px}
.product-brand{font-size:12.5px;color:var(--primary);font-weight:600;background:var(--primary-light);padding:3px 10px;border-radius:20px}
.product-more{font-size:13px;color:var(--muted);font-weight:600}
.product-card:hover .product-more{color:var(--primary)}

/* 分页 */
.pagination{display:flex;justify-content:center;gap:8px;margin-top:46px}
.page-link{min-width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--border);border-radius:8px;padding:0 14px;font-size:14px;color:var(--text);background:#fff;transition:.2s}
.page-link:hover{border-color:var(--primary);color:var(--primary)}
.page-link.active{background:var(--primary);border-color:var(--primary);color:#fff}
.page-link.disabled{opacity:.45;cursor:not-allowed}

/* ---------- 首页：数据统计 ---------- */
.stats{background:linear-gradient(120deg,var(--primary-deep),var(--primary));color:#fff;position:relative;overflow:hidden}
.stats::before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;border:1px solid rgba(255,255,255,.12);right:-120px;top:-140px}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative;z-index:1}
.stat-item{text-align:center;padding:10px}
.stat-item strong{display:block;font-size:42px;font-weight:800;line-height:1.2}
.stat-item span{font-size:14px;color:#bcd7ec}
.stat-item + .stat-item{border-left:1px solid rgba(255,255,255,.16)}

/* ---------- 首页：品牌合作 ---------- */
.brand-strip{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:8px}
.brand-item{border:1px solid var(--border);border-radius:8px;padding:14px 24px;font-size:16px;font-weight:700;color:#5b6a7b;background:#fff;transition:.3s;letter-spacing:1px}
.brand-item:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-3px);box-shadow:var(--shadow-sm)}

/* ---------- 首页：新闻 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:all .3s}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.news-thumb{aspect-ratio:16/9;overflow:hidden}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.news-card:hover .news-thumb img{transform:scale(1.06)}
.news-body{padding:20px}
.news-date{font-size:12px;color:var(--muted);margin-bottom:8px;display:flex;gap:10px;align-items:center}
.news-date .dot{width:4px;height:4px;border-radius:50%;background:var(--accent)}
.news-body h3{font-size:16px;line-height:1.5;margin-bottom:10px}
.news-body h3 a:hover{color:var(--primary)}
.news-body p{font-size:13.5px;color:var(--muted);line-height:1.65}

/* ---------- 服务页 ---------- */
.service-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.service-card{display:flex;gap:22px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:30px;transition:all .3s}
.service-card:hover{box-shadow:var(--shadow-md);border-color:transparent;transform:translateY(-4px)}
.service-icon{width:64px;height:64px;border-radius:16px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.service-icon svg{width:32px;height:32px}
.service-card h3{font-size:19px;margin-bottom:10px}
.service-card p{color:var(--muted);font-size:14px;margin-bottom:14px}
.service-more{color:var(--primary);font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:6px}
.service-more svg{transition:transform .3s}
.service-card:hover .service-more svg{transform:translateX(4px)}

/* ---------- 列表页布局 ---------- */
.list-layout{display:grid;grid-template-columns:270px 1fr;gap:30px;align-items:start}
.sidebar{position:sticky;top:100px}
.sidebar-box{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;margin-bottom:20px}
.sidebar-title{background:var(--primary);color:#fff;padding:14px 20px;font-size:16px;font-weight:700;display:flex;align-items:center;gap:8px}
.sidebar-title svg{width:18px;height:18px}
.sidebar-links a{display:flex;justify-content:space-between;align-items:center;padding:12px 20px;font-size:14px;color:var(--text);border-bottom:1px solid #f1f5f9;transition:.2s}
.sidebar-links a:last-child{border-bottom:0}
.sidebar-links a:hover,.sidebar-links a.active{background:var(--primary-light);color:var(--primary);padding-left:26px}
.sidebar-contact{padding:20px;background:linear-gradient(140deg,var(--primary-deep),var(--primary));color:#fff}
.sidebar-contact h4{color:#fff;font-size:16px;margin-bottom:12px}
.sidebar-contact p{font-size:13px;color:#cfe2f2;margin-bottom:8px;line-height:1.6}
.sidebar-contact .tel{font-size:20px;font-weight:800;color:#fff}

/* ---------- 产品详情 ---------- */
.product-detail{display:grid;grid-template-columns:440px 1fr;gap:46px;align-items:start}
.detail-img{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;position:sticky;top:100px}
.detail-img img{width:100%}
.detail-info h1{font-size:28px;margin-bottom:14px}
.detail-brand{display:inline-block;background:var(--primary-light);color:var(--primary);padding:4px 14px;border-radius:20px;font-size:13px;font-weight:600;margin-bottom:16px}
.detail-meta{background:var(--bg-soft);border-radius:var(--radius);padding:18px 20px;margin:18px 0;font-size:14px}
.detail-meta li{display:flex;gap:10px;padding:6px 0;color:var(--muted)}
.detail-meta li strong{color:var(--text);min-width:70px;font-weight:600}
.detail-summary{color:var(--muted);line-height:1.8;margin-bottom:24px}
.detail-contact{display:flex;gap:14px;flex-wrap:wrap}
.rich-content{padding:34px 0 10px}
.rich-content h2,.rich-content h3{margin:26px 0 12px;font-size:20px;position:relative;padding-left:14px}
.rich-content h2::before,.rich-content h3::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--primary)}
.rich-content p{margin:12px 0;color:var(--text);line-height:1.9}
.rich-content ul{margin:12px 0;padding-left:4px}
.rich-content ul li{padding:6px 0 6px 24px;position:relative;color:var(--text)}
.rich-content ul li::before{content:"";position:absolute;left:4px;top:15px;width:7px;height:7px;border-radius:50%;background:var(--accent)}
.rich-block{background:var(--bg-soft);border-radius:var(--radius);padding:24px 26px;margin:22px 0}
.rich-block h4{font-size:16px;margin-bottom:10px;color:var(--primary-deep)}
.rich-block pre,.rich-block p{white-space:pre-line;font-size:14px;color:var(--text);line-height:1.9;margin:0}
.related-title{font-size:22px;margin-bottom:24px;position:relative;padding-left:14px}
.related-title::before{content:"";position:absolute;left:0;top:4px;bottom:4px;width:4px;border-radius:2px;background:var(--primary)}

/* ---------- 关于我们 ---------- */
.about-mission{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.mission-card{text-align:center;padding:36px 26px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);transition:.3s}
.mission-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.mission-card .mi{width:64px;height:64px;margin:0 auto 18px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:26px;font-weight:800;color:#fff}
.mission-card:nth-child(1) .mi{background:var(--primary)}
.mission-card:nth-child(2) .mi{background:var(--accent)}
.mission-card:nth-child(3) .mi{background:#e08a3c}
.mission-card h3{font-size:17px;margin-bottom:10px}
.mission-card p{font-size:13.5px;color:var(--muted);line-height:1.7}
.timeline{position:relative;max-width:860px;margin:0 auto}
.timeline::before{content:"";position:absolute;left:50%;top:0;bottom:0;width:2px;background:var(--border);transform:translateX(-50%)}
.tl-item{position:relative;width:50%;padding:0 44px 40px}
.tl-item:nth-child(odd){left:0;text-align:right}
.tl-item:nth-child(even){left:50%}
.tl-item::before{content:"";position:absolute;top:6px;width:14px;height:14px;border-radius:50%;background:var(--primary);border:3px solid #fff;box-shadow:0 0 0 3px var(--primary-light)}
.tl-item:nth-child(odd)::before{right:-7px}
.tl-item:nth-child(even)::before{left:-7px}
.tl-year{font-size:13px;color:var(--primary);font-weight:700;letter-spacing:1px}
.tl-item h4{font-size:16px;margin:6px 0 8px}
.tl-item p{font-size:13.5px;color:var(--muted)}

/* ---------- 联系我们 ---------- */
.contact-grid{display:grid;grid-template-columns:420px 1fr;gap:34px;align-items:start}
.contact-cards{display:flex;flex-direction:column;gap:16px}
.contact-card{display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px;transition:.3s}
.contact-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px)}
.contact-ico{width:48px;height:48px;border-radius:12px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.contact-ico svg{width:24px;height:24px}
.contact-card h4{font-size:15px;margin-bottom:4px}
.contact-card p{font-size:14px;color:var(--muted);line-height:1.6}
.form-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:30px}
.form-card h3{font-size:20px;margin-bottom:20px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:13.5px;font-weight:600;margin-bottom:7px;color:var(--text)}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:11px 14px;border:1px solid var(--border);border-radius:8px;font-size:14px;font-family:var(--font);color:var(--text);background:#fff;transition:border-color .2s,box-shadow .2s;outline:none}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(13,109,173,.12)}
.form-group textarea{min-height:120px;resize:vertical}
.form-tip{font-size:12px;color:var(--muted);margin-top:6px}
.form-msg{padding:12px 16px;border-radius:8px;font-size:14px;margin-bottom:16px;display:none}
.form-msg.ok{display:block;background:var(--accent-light);color:#0f7a5c;border:1px solid #b9e8d8}
.form-msg.err{display:block;background:#fdeeee;color:#c0392b;border:1px solid #f3c1c1}

/* ---------- 新闻详情 ---------- */
.article{padding:36px 0}
.article-head{text-align:center;max-width:800px;margin:0 auto 34px}
.article-head h1{font-size:30px;margin-bottom:14px}
.article-meta{display:flex;justify-content:center;gap:20px;color:var(--muted);font-size:13px;flex-wrap:wrap}
.article-body{max-width:800px;margin:0 auto;font-size:15.5px;line-height:2}
.article-body p{margin:14px 0}
.article-body h2,.article-body h3{margin:28px 0 12px}
.article-body ul{margin:14px 0;padding-left:8px}
.article-body ul li{position:relative;padding-left:22px;margin:8px 0}
.article-body ul li::before{content:"";position:absolute;left:2px;top:12px;width:7px;height:7px;border-radius:50%;background:var(--primary)}
.article-tags{max-width:800px;margin:26px auto 0}
.article-nav{display:flex;justify-content:space-between;gap:20px;max-width:800px;margin:30px auto 0;padding-top:22px;border-top:1px solid var(--border);font-size:14px}

/* ---------- 页脚 ---------- */
.footer{background:var(--dark);color:#a8bdce;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding:64px 20px 44px}
.footer-col h4{color:#fff;font-size:17px;margin-bottom:20px;position:relative;padding-bottom:12px}
.footer-col h4::after{content:"";position:absolute;left:0;bottom:0;width:30px;height:2px;background:var(--accent)}
.footer-logo img{height:40px;margin-bottom:16px}
.footer-desc{font-size:13.5px;line-height:1.8;margin-top:12px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px;transition:.2s}
.footer-col ul a:hover{color:#fff;padding-left:4px}
.footer-contact li{font-size:14px;line-height:1.7;margin-bottom:8px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.09);padding:18px 0}
.footer-bottom-inner{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px}
.footer-bottom a:hover{color:#fff}

/* ---------- 回到顶部 ---------- */
.backtop{position:fixed;right:24px;bottom:28px;width:46px;height:46px;border-radius:12px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:var(--shadow-md);opacity:0;pointer-events:none;transition:.3s;z-index:90}
.backtop.show{opacity:1;pointer-events:auto}
.backtop:hover{background:var(--primary-dark);transform:translateY(-3px)}

/* ---------- 动画 ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.16,1,.3,1),transform .7s cubic-bezier(.16,1,.3,1)}
.reveal.in{opacity:1;transform:none}
@keyframes fadeUp{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}
.hero-content{animation:fadeUp .9s cubic-bezier(.16,1,.3,1) both}

/* ---------- 404 ---------- */
.error-page{text-align:center;padding:110px 20px}
.error-page .code{font-size:110px;font-weight:800;color:var(--primary-light);line-height:1}
.error-page h1{font-size:26px;margin:18px 0 10px}
.error-page p{color:var(--muted);margin-bottom:28px}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .biz-grid{grid-template-columns:repeat(2,1fr)}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .products-grid{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .product-detail{grid-template-columns:1fr;gap:30px}
  .detail-img{position:static}
  .list-layout{grid-template-columns:1fr}
  .sidebar{position:static}
}
@media (max-width:768px){
  .section{padding:60px 0}
  .topbar-mail{display:none}
  .header-inner{height:64px}
  .nav{position:fixed;top:0;right:-280px;width:280px;height:100vh;background:#fff;flex-direction:column;padding:76px 26px 30px;box-shadow:-10px 0 30px rgba(10,30,50,.12);transition:right .35s cubic-bezier(.16,1,.3,1);z-index:99}
  .nav.open{right:0}
  .nav a{padding:13px 8px;font-size:16px;border-bottom:1px solid #f1f5f9;border-radius:0}
  .nav a.active::after{display:none}
  .nav a.active{color:var(--primary);padding-left:12px}
  .nav-toggle{display:flex}
  .hero{min-height:480px}
  .hero-content h1{font-size:30px}
  .hero-content p{font-size:15px}
  .section-head h2{font-size:27px}
  .biz-grid,.cat-grid,.news-grid{grid-template-columns:1fr 1fr}
  .products-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:26px}
  .stat-item + .stat-item{border-left:0}
  .stat-item strong{font-size:34px}
  .about-split{grid-template-columns:1fr;gap:40px}
  .service-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .about-mission{grid-template-columns:1fr}
  .timeline::before{left:8px}
  .tl-item{width:100%;padding:0 0 34px 40px;text-align:left}
  .tl-item:nth-child(odd){left:0;text-align:left}
  .tl-item:nth-child(even){left:0}
  .tl-item::before{left:2px!important;right:auto!important}
  .brand-item{padding:10px 16px;font-size:14px}
}
@media (max-width:480px){
  .biz-grid,.cat-grid,.news-grid{grid-template-columns:1fr}
  .products-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .topbar-right{display:none}
  .topbar-inner{justify-content:center}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}