/* ============ 设计基准：宽度 2500px，桌面优先，移动端逐级适配 ============ */
:root{
  --blue:#2b7de9; --blue-dark:#0f3a66; --blue-deep:#0a2a4d;
  --teal:#0e9f8a; --teal-dark:#087a6a;
  --ink:#12314f; --muted:#5a7289; --line:#e6eef6;
  --bg-soft:#f4f9fd; --white:#ffffff;
  --radius:18px; --shadow:0 18px 46px rgba(18,49,79,.10);
  --container:2500px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--ink); background:var(--white); line-height:1.6;
  -webkit-font-smoothing:antialiased; overflow-x:hidden;
}
img{display:block;max-width:100%}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.wrap{max-width:var(--container);margin:0 auto;padding-left:clamp(20px,2.6vw,70px);padding-right:clamp(20px,2.6vw,70px)}

/* ============ 顶部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(255,255,255,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:90px}
.logo{display:flex;align-items:center;gap:14px;font-weight:800;font-size:26px;color:var(--blue-dark);letter-spacing:1px}
.logo .logo-mark{width:48px;height:48px;border-radius:12px;background:linear-gradient(135deg,var(--blue),var(--teal));display:flex;align-items:center;justify-content:center;flex:none}
.logo .logo-mark svg{width:28px;height:28px}
.main-nav{display:flex;align-items:center;gap:clamp(20px,2.6vw,56px)}
.main-nav a{position:relative;font-size:19px;color:var(--ink);font-weight:500;padding:8px 2px;transition:color .25s}
.main-nav a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:3px;border-radius:2px;background:var(--blue);transition:width .25s}
.main-nav a:hover,.main-nav a.active{color:var(--blue)}
.main-nav a:hover::after,.main-nav a.active::after{width:100%}
.nav-toggle{display:none;flex-direction:column;gap:6px;background:none;border:none;cursor:pointer;padding:10px}
.nav-toggle span{width:30px;height:3px;border-radius:2px;background:var(--blue-dark);transition:.3s}

/* ============ 全屏 Banner 轮播 (Swiper) ============ */
.hero-swiper{position:relative;width:100%;height:100vh;min-height:640px;max-height:1200px}
.hero-swiper .swiper-slide{position:relative;overflow:hidden;background:var(--blue-dark)}
.hero-swiper .swiper-slide img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-swiper .swiper-slide::after{content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(10,42,77,.86) 0%,rgba(10,42,77,.45) 48%,rgba(10,42,77,.15) 100%)}
.hero-content{position:absolute;z-index:5;top:50%;transform:translateY(-50%);left:clamp(24px,7vw,200px);right:clamp(24px,7vw,200px);max-width:1500px}
.hero-tag{display:inline-flex;align-items:center;gap:10px;color:#bfe0ff;letter-spacing:4px;font-size:17px;text-transform:uppercase;margin-bottom:26px}
.hero-tag::before{content:"";width:44px;height:2px;background:var(--teal)}
.hero-en{font-size:clamp(56px,6.4vw,168px);font-weight:900;letter-spacing:6px;color:#fff;line-height:1;text-transform:uppercase;opacity:.18}
.hero-cn{font-size:clamp(30px,2.8vw,64px);font-weight:800;color:#fff;margin-top:-8px;letter-spacing:2px}
.hero-sub{font-size:clamp(16px,1.2vw,26px);color:#d7e8fb;margin-top:18px;max-width:820px}
.hero-core{margin-top:30px;font-size:clamp(15px,1vw,21px);color:#bfe0ff;letter-spacing:1px}
.hero-core strong{color:#fff;font-weight:700}
.hero-cta{display:inline-flex;align-items:center;gap:12px;margin-top:40px;padding:18px 44px;background:var(--teal);color:#fff;font-size:19px;font-weight:600;border-radius:50px;transition:.3s}
.hero-cta:hover{background:var(--teal-dark);transform:translateY(-2px)}
/* 轮播控件 */
.hero-swiper .swiper-button-prev,.hero-swiper .swiper-button-next{
  width:62px;height:62px;border-radius:50%;background:rgba(255,255,255,.14);backdrop-filter:blur(4px);
  color:#fff;border:1px solid rgba(255,255,255,.35);transition:.3s}
.hero-swiper .swiper-button-prev:hover,.hero-swiper .swiper-button-next:hover{background:var(--teal)}
.hero-swiper .swiper-button-prev::after,.hero-swiper .swiper-button-next::after{font-size:22px;font-weight:900}
.hero-swiper .swiper-pagination-bullet{width:12px;height:12px;background:#fff;opacity:.5}
.hero-swiper .swiper-pagination-bullet-active{opacity:1;width:30px;border-radius:6px;background:var(--teal)}
.hero-scroll{position:absolute;z-index:5;left:50%;bottom:30px;transform:translateX(-50%);color:#fff;font-size:14px;letter-spacing:2px;opacity:.8}
.hero-scroll::before{content:"";display:block;width:24px;height:40px;margin:0 auto 8px;border:2px solid #fff;border-radius:12px}

/* ============ 服务优势 ============ */
.advantages{padding:clamp(50px,5vw,96px) 0;background:#fff}
.adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(16px,1.6vw,34px)}
.adv-item{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(24px,2.2vw,46px);transition:.35s;position:relative;overflow:hidden}
.adv-item::before{content:"";position:absolute;top:0;left:0;right:0;height:5px;background:linear-gradient(90deg,var(--blue),var(--teal));opacity:0;transition:.35s}
.adv-item:hover{transform:translateY(-8px);box-shadow:var(--shadow);border-color:transparent}
.adv-item:hover::before{opacity:1}
.adv-icon{width:76px;height:76px;border-radius:18px;background:linear-gradient(135deg,#e3f0ff,#d8f7f2);display:flex;align-items:center;justify-content:center;margin-bottom:24px}
.adv-icon svg{width:40px;height:40px;stroke:var(--blue)}
.adv-item h3{font-size:clamp(20px,1.4vw,30px);margin-bottom:14px;color:var(--blue-dark)}
.adv-item p{font-size:clamp(14px,1vw,20px);color:var(--muted)}

/* ============ 产品服务 ============ */
.products{padding:clamp(50px,5vw,100px) 0;background:var(--bg-soft)}
.section-head{text-align:center;margin-bottom:clamp(30px,3vw,56px)}
.section-head .en{font-size:clamp(16px,1.3vw,26px);letter-spacing:6px;text-transform:uppercase;color:var(--blue);font-weight:600}
.section-head h2{font-size:clamp(30px,3vw,58px);color:var(--blue-dark);margin-top:6px;font-weight:800;letter-spacing:1px}
.section-head .bar{width:64px;height:4px;border-radius:2px;background:var(--teal);margin:18px auto 0}
.cat-tabs{display:flex;justify-content:center;flex-wrap:wrap;gap:clamp(10px,1vw,18px);margin-bottom:clamp(28px,3vw,44px)}
.cat-tab{padding:14px 34px;border:1px solid #c9ddf2;border-radius:40px;background:#fff;font-size:18px;color:var(--ink);cursor:pointer;transition:.25s}
.cat-tab:hover{border-color:var(--blue);color:var(--blue)}
.cat-tab.active{background:var(--blue);color:#fff;border-color:var(--blue)}
.product-swiper{position:relative;padding:10px 0 14px}
.product-swiper .swiper-slide{height:auto}
.prod-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;height:100%}
.prod-card .imgbox{position:relative;height:clamp(240px,22vw,520px);overflow:hidden}
.prod-card .imgbox img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.prod-card:hover .imgbox img{transform:scale(1.06)}
.prod-card .imgbox .badge{position:absolute;top:20px;left:20px;background:rgba(10,42,77,.82);color:#fff;padding:8px 18px;border-radius:30px;font-size:15px;letter-spacing:1px}
.prod-card .body{padding:clamp(20px,1.8vw,34px);display:flex;flex-direction:column;flex:1}
.prod-card .body h4{font-size:clamp(20px,1.5vw,30px);color:var(--blue-dark);margin-bottom:6px}
.prod-card .body .sub{color:var(--teal);font-size:15px;letter-spacing:.5px;margin-bottom:14px}
.prod-card .body p{color:var(--muted);font-size:clamp(14px,1vw,19px);line-height:1.7}
.product-swiper .swiper-button-prev,.product-swiper .swiper-button-next{width:54px;height:54px;border-radius:50%;background:#fff;box-shadow:0 8px 24px rgba(18,49,79,.14);color:var(--blue);top:42%}
.product-swiper .swiper-button-prev::after,.product-swiper .swiper-button-next::after{font-size:20px;font-weight:800}
.product-swiper .swiper-pagination-bullet{background:var(--blue);opacity:.35}
.product-swiper .swiper-pagination-bullet-active{opacity:1}

/* ============ 公司介绍 ============ */
.about{position:relative;padding:clamp(60px,6vw,120px) 0;background:
  radial-gradient(900px 500px at 12% 8%,rgba(255,255,255,.12),transparent 60%),
  radial-gradient(800px 500px at 88% 92%,rgba(255,255,255,.10),transparent 60%),
  linear-gradient(135deg,#0a6d5f,#0e9f8a 55%,#0b7d6c);color:#eafaf6;overflow:hidden}
.about .water{position:absolute;right:-4%;top:50%;transform:translateY(-50%);font-size:clamp(120px,16vw,360px);font-weight:900;color:rgba(255,255,255,.06);letter-spacing:8px;white-space:nowrap;pointer-events:none}
.about-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr 1fr;gap:clamp(28px,4vw,80px);align-items:center}
.about-lead{font-size:clamp(24px,2.4vw,46px);font-weight:800;line-height:1.35;margin-bottom:26px}
.about-lead em{font-style:normal;color:#ffe9a8}
.about-desc{font-size:clamp(15px,1.15vw,21px);line-height:1.9;color:#d9f3ec;max-width:760px}
.about-label{display:inline-block;font-size:15px;letter-spacing:5px;text-transform:uppercase;color:#9ef0e0;margin-top:30px}
.about-box{background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.25);border-radius:var(--radius);padding:clamp(24px,2.4vw,44px);backdrop-filter:blur(4px)}
.about-box h4{font-size:clamp(20px,1.6vw,30px);margin-bottom:16px}
.about-box p{font-size:clamp(14px,1.05vw,20px);line-height:1.9;color:#e5f7f2}
.about-btn{display:inline-flex;align-items:center;gap:12px;margin-top:36px;padding:17px 44px;background:#fff;color:var(--teal-dark);font-weight:700;font-size:19px;border-radius:50px;transition:.3s}
.about-btn:hover{background:#ffe9a8;transform:translateY(-2px)}

/* ============ 解决方案 ============ */
.solution{padding:clamp(50px,5vw,100px) 0;background:#fff}
.sol-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:clamp(18px,1.8vw,34px)}
.sol-card{position:relative;border-radius:var(--radius);overflow:hidden;min-height:clamp(220px,20vw,460px);display:flex;align-items:flex-end;box-shadow:var(--shadow)}
.sol-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s}
.sol-card:hover img{transform:scale(1.06)}
.sol-card .ov{position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(10,42,77,.88) 100%)}
.sol-card .txt{position:relative;z-index:2;padding:clamp(20px,2vw,40px)}
.sol-card .txt h4{font-size:clamp(22px,1.7vw,34px);color:#fff;margin-bottom:6px}
.sol-card .txt .cat{color:#bcd8f5;font-size:clamp(13px,.95vw,18px);margin-bottom:8px;letter-spacing:.5px}
.sol-card .more{color:var(--teal);font-size:16px;font-weight:600;display:inline-flex;align-items:center;gap:8px}
.sol-grid.sol4{grid-template-columns:repeat(4,1fr);margin-top:clamp(18px,1.8vw,34px)}
.sol-card.small{min-height:clamp(200px,17vw,380px)}
.sol-card.small .txt{padding:clamp(16px,1.5vw,30px)}
.sol-card.small .txt h4{font-size:clamp(18px,1.3vw,26px)}

/* ============ 新闻资讯 ============ */
.news{padding:clamp(50px,5vw,100px) 0;background:var(--bg-soft)}
.news-grid{display:grid;grid-template-columns:1fr 1.35fr;gap:clamp(24px,3vw,60px)}
.news-feature{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column}
.news-feature .imgbox{height:clamp(220px,20vw,440px);overflow:hidden}
.news-feature .imgbox img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.news-feature:hover .imgbox img{transform:scale(1.05)}
.news-feature .body{padding:clamp(20px,2vw,36px);display:flex;flex-direction:column;flex:1}
.news-feature .date{color:var(--teal);font-size:15px;letter-spacing:1px}
.news-feature h4{font-size:clamp(20px,1.6vw,32px);margin:12px 0;color:var(--blue-dark);line-height:1.4}
.news-feature p{color:var(--muted);font-size:clamp(14px,1.05vw,19px);flex:1}
.news-feature .read{color:var(--blue);font-weight:600;margin-top:18px;font-size:17px;display:inline-flex;align-items:center;gap:8px}
.news-list{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:clamp(18px,1.6vw,28px) clamp(18px,1.6vw,34px)}
.news-row{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:clamp(16px,1.4vw,26px) 6px;border-bottom:1px dashed var(--line);cursor:pointer;transition:.25s}
.news-row:last-child{border-bottom:none}
.news-row:hover{background:#f6fbff;padding-left:14px}
.news-row h5{font-size:clamp(15px,1.15vw,22px);color:var(--ink);font-weight:500;flex:1}
.news-row .d{color:var(--muted);font-size:15px;flex:none;white-space:nowrap}
.more-btn{display:block;width:max-content;margin:clamp(26px,3vw,40px) auto 0;padding:16px 46px;border:2px solid var(--blue);color:var(--blue);border-radius:50px;font-size:18px;font-weight:600;transition:.25s}
.more-btn:hover{background:var(--blue);color:#fff}

/* ============ 联系我们 ============ */
.contact{position:relative;padding:clamp(60px,6vw,110px) 0;color:#fff;background:
  linear-gradient(rgba(10,42,77,.92),rgba(10,42,77,.94)),var(--blue-dark)}
.contact .wrap{position:relative;z-index:2}
.contact-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:clamp(30px,4vw,70px);align-items:start}
.contact-head .en{font-size:16px;letter-spacing:6px;text-transform:uppercase;color:var(--teal);font-weight:600}
.contact-head h2{font-size:clamp(28px,2.8vw,52px);margin:8px 0 10px;font-weight:800}
.contact-head p{color:#bcd8f5;font-size:16px}
.contact-list{margin-top:32px}
.contact-item{display:flex;gap:18px;align-items:flex-start;padding:16px 0;border-bottom:1px solid rgba(255,255,255,.12)}
.contact-item .ic{width:46px;height:46px;flex:none;border-radius:12px;background:rgba(255,255,255,.1);display:flex;align-items:center;justify-content:center}
.contact-item .ic svg{width:24px;height:24px;stroke:#9ef0e0}
.contact-item .lb{font-size:13px;color:#9bb6d2;letter-spacing:1px}
.contact-item .val{font-size:18px;margin-top:2px}
.map-frame{margin-top:26px;border-radius:var(--radius);overflow:hidden;height:clamp(180px,16vw,340px);border:1px solid rgba(255,255,255,.2);position:relative;background:#122e4d}
.map-frame img{width:100%;height:100%;object-fit:cover;opacity:.55}
.map-frame .pin{position:absolute;left:50%;top:50%;transform:translate(-50%,-100%);color:#ff6b6b;font-size:40px;text-shadow:0 2px 8px rgba(0,0,0,.4)}
.contact-form{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:var(--radius);padding:clamp(24px,2.4vw,46px);backdrop-filter:blur(4px)}
.contact-form h4{font-size:clamp(20px,1.6vw,30px);margin-bottom:26px}
.field{margin-bottom:22px}
.field label{display:block;font-size:15px;color:#cfe3f7;margin-bottom:10px}
.field label b{color:#ff7a7a}
.field .in{display:flex;align-items:center;gap:14px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.2);border-radius:12px;padding:0 16px}
.field input,.field textarea{width:100%;background:none;border:none;outline:none;color:#fff;font-size:17px;padding:16px 0;font-family:inherit}
.field input::placeholder,.field textarea::placeholder{color:#7f9bb9}
.field .count{flex:none;color:#7f9bb9;font-size:13px}
.field textarea{resize:vertical;min-height:120px}
.submit-btn{width:100%;padding:18px;background:linear-gradient(90deg,var(--blue),var(--teal));border:none;border-radius:14px;color:#fff;font-size:19px;font-weight:700;cursor:pointer;transition:.3s}
.submit-btn:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(46,125,233,.4)}

/* ============ 页脚 ============ */
.site-footer{background:var(--blue-deep);color:#9bb6d2;padding:34px 0;text-align:center;font-size:15px;letter-spacing:.5px}
.site-footer .wrap{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px}
.site-footer a{color:#cfe3f7}

/* ============ 轻提示 toast ============ */
#toast{position:fixed;left:50%;bottom:56px;transform:translateX(-50%) translateY(20px);z-index:3000;
  background:rgba(10,42,77,.94);color:#fff;padding:14px 34px;border-radius:40px;font-size:16px;
  box-shadow:0 12px 34px rgba(18,49,79,.3);opacity:0;pointer-events:none;transition:.3s;white-space:nowrap}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ============ 视图容器 ============ */
.view{display:none}
.view.is-active{display:block}

/* ============ 内页横幅 ============ */
.page-banner{position:relative;height:clamp(340px,44vw,720px);min-height:360px;display:flex;align-items:flex-end;
  background-size:cover;background-position:center;color:#fff}
.pb-ov{position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,42,77,.55),rgba(10,42,77,.82))}
.page-banner .wrap{position:relative;z-index:2;width:100%}
.pb-inner{padding:clamp(30px,4vw,70px) 0}
.pb-en{font-size:clamp(15px,1.2vw,22px);letter-spacing:6px;text-transform:uppercase;color:var(--teal);font-weight:600}
.pb-inner h1{font-size:clamp(34px,4vw,72px);font-weight:800;margin:10px 0 12px;letter-spacing:2px}
.pb-inner p{font-size:clamp(15px,1.15vw,22px);color:#cfe3f7}
.breadcrumb{margin-top:26px;display:flex;gap:10px;align-items:center;font-size:16px;color:#9fbad6}
.breadcrumb a{color:#dcebfa;transition:.2s}
.breadcrumb a:hover{color:#fff}
.breadcrumb em{font-style:normal;color:var(--teal)}

/* ============ 关于我们 ============ */
.ab-intro{padding:clamp(50px,5vw,100px) 0;background:#fff}
.ab-intro-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:clamp(30px,4vw,80px);align-items:center}
.ab-intro-img{position:relative}
.ab-intro-img img{width:100%;height:clamp(300px,34vw,640px);object-fit:cover;border-radius:var(--radius);box-shadow:var(--shadow)}
.ab-exp{position:absolute;right:-22px;bottom:34px;background:linear-gradient(135deg,var(--blue),var(--teal));color:#fff;
  width:clamp(120px,11vw,200px);height:clamp(120px,11vw,200px);border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;box-shadow:var(--shadow)}
.ab-exp b{font-size:clamp(30px,3vw,52px);font-weight:900}
.ab-exp span{font-size:clamp(12px,.9vw,16px);opacity:.9}
.ab-intro-txt .en-tag{font-size:15px;letter-spacing:4px;text-transform:uppercase;color:var(--blue);font-weight:600}
.ab-intro-txt h2{font-size:clamp(26px,2.6vw,46px);color:var(--blue-dark);margin:14px 0 22px;line-height:1.35;font-weight:800}
.ab-intro-txt p{color:var(--muted);font-size:clamp(14px,1.05vw,19px);line-height:1.9;margin-bottom:16px}
.ab-points{margin-top:10px;display:grid;gap:12px}
.ab-points li{display:flex;align-items:center;gap:12px;font-size:clamp(15px,1.05vw,20px);color:var(--ink);font-weight:500}
.ab-points li::before{content:"";width:22px;height:22px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--teal));
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z' fill='white'/%3E%3C/svg%3E") center/contain no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z' fill='white'/%3E%3C/svg%3E") center/contain no-repeat}

.ab-stats{padding:clamp(40px,4vw,70px) 0;background:linear-gradient(120deg,var(--blue-deep),var(--blue-dark))}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(16px,2vw,40px)}
.stat{text-align:center;color:#fff;position:relative}
.stat:not(:last-child)::after{content:"";position:absolute;right:0;top:20%;bottom:20%;width:1px;background:rgba(255,255,255,.15)}
.stat b{font-size:clamp(36px,4.2vw,80px);font-weight:900;color:#fff}
.stat b::after{content:"+";color:var(--teal)}
.stat span{display:block;font-size:clamp(14px,1.1vw,20px);color:#a9c6e2;margin-top:6px}

.ab-mission{padding:clamp(50px,5vw,100px) 0;background:var(--bg-soft)}
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(18px,2vw,36px)}
.value-card{background:#fff;border-radius:var(--radius);padding:clamp(28px,2.8vw,52px);text-align:center;box-shadow:var(--shadow);border:1px solid var(--line);transition:.35s}
.value-card:hover{transform:translateY(-8px);border-color:transparent}
.vc-ic{width:84px;height:84px;margin:0 auto 22px;border-radius:22px;background:linear-gradient(135deg,#e3f0ff,#d8f7f2);display:flex;align-items:center;justify-content:center}
.vc-ic svg{width:44px;height:44px;stroke:var(--blue)}
.value-card h3{font-size:clamp(22px,1.7vw,32px);color:var(--blue-dark);margin-bottom:12px}
.value-card p{color:var(--muted);font-size:clamp(14px,1.05vw,19px)}

.ab-history{padding:clamp(50px,5vw,100px) 0;background:#fff}
.timeline{position:relative;max-width:1200px;margin:0 auto;padding-left:60px}
.timeline::before{content:"";position:absolute;left:22px;top:0;bottom:0;width:3px;border-radius:2px;background:linear-gradient(var(--blue),var(--teal))}
.tl-item{position:relative;padding:0 0 clamp(30px,3vw,48px) 0;display:grid;grid-template-columns:140px 1fr;gap:clamp(20px,2vw,44px)}
.tl-item:last-child{padding-bottom:0}
.tl-dot{position:absolute;left:-36px;top:8px;transform:translateX(-50%);width:20px;height:20px;border-radius:50%;background:#fff;border:5px solid var(--blue);box-shadow:0 0 0 6px rgba(46,125,233,.18)}
.tl-year{font-size:clamp(22px,2vw,34px);font-weight:800;color:var(--blue);line-height:1}
.tl-card{background:var(--bg-soft);border:1px solid var(--line);border-radius:14px;padding:clamp(18px,1.8vw,28px);transition:.3s}
.tl-card:hover{box-shadow:var(--shadow)}
.tl-card h4{font-size:clamp(18px,1.4vw,26px);color:var(--blue-dark);margin-bottom:8px}
.tl-card p{color:var(--muted);font-size:clamp(14px,1vw,18px)}

.ab-cert{padding:clamp(50px,5vw,100px) 0;background:var(--bg-soft)}
.cert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(16px,2vw,32px)}
.cert-card{background:#fff;border-radius:var(--radius);padding:clamp(26px,2.6vw,46px);text-align:center;box-shadow:var(--shadow);border:1px solid var(--line)}
.cert-ic{width:70px;height:70px;margin:0 auto 18px;border-radius:18px;background:linear-gradient(135deg,var(--blue),var(--teal));display:flex;align-items:center;justify-content:center}
.cert-ic svg{width:38px;height:38px;stroke:#fff}
.cert-card h4{font-size:clamp(20px,1.5vw,28px);color:var(--blue-dark);margin-bottom:8px}
.cert-card p{color:var(--muted);font-size:clamp(14px,1vw,18px)}

.cta-strip{background:linear-gradient(120deg,var(--blue-deep),var(--blue-dark));color:#fff;padding:clamp(40px,4vw,60px) 0}
.cta-strip .wrap{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.cta-strip h3{font-size:clamp(22px,2.2vw,40px);font-weight:800}
.cta-strip p{color:#a9c6e2;font-size:clamp(14px,1.05vw,19px);margin-top:8px}
.cta-strip-btn{display:inline-flex;align-items:center;gap:10px;padding:17px 46px;background:var(--teal);color:#fff;font-size:18px;font-weight:700;border-radius:50px;transition:.3s;white-space:nowrap}
.cta-strip-btn:hover{background:#0c8a77;transform:translateY(-2px)}

/* ============ 产品中心列表 ============ */
.pc-page,.news-page{padding:clamp(40px,4vw,80px) 0;background:#fff}
.pc-tabs{display:flex;justify-content:center;flex-wrap:wrap;gap:clamp(10px,1vw,18px);margin-bottom:clamp(28px,3vw,44px)}
.pc-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(18px,2vw,34px)}
.pc-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.35s;display:flex;flex-direction:column}
.pc-item:hover{transform:translateY(-8px);border-color:transparent}
.pc-item .imgbox{position:relative;height:clamp(220px,20vw,420px);overflow:hidden}
.pc-item .imgbox img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.pc-item:hover .imgbox img{transform:scale(1.07)}
.pc-item .imgbox .badge{position:absolute;top:18px;left:18px;background:rgba(10,42,77,.82);color:#fff;padding:7px 16px;border-radius:30px;font-size:14px}
.pc-item .body{padding:clamp(18px,1.6vw,28px);display:flex;flex-direction:column;flex:1}
.pc-item .body h4{font-size:clamp(18px,1.4vw,26px);color:var(--blue-dark);margin-bottom:6px}
.pc-item .body .sub{color:var(--teal);font-size:14px;margin-bottom:12px}
.pc-item .body p{color:var(--muted);font-size:clamp(13px,.95vw,17px);flex:1}
.pc-item .body .go{color:var(--blue);font-weight:600;font-size:16px;margin-top:14px;display:inline-flex;align-items:center;gap:8px}

/* ============ 产品详情 ============ */
.pd-page{padding:clamp(40px,4vw,80px) 0;background:var(--bg-soft)}
.pd-layout{display:grid;grid-template-columns:1fr 1.2fr;gap:clamp(28px,4vw,70px);align-items:start}
.pd-gallery .main{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);height:clamp(280px,32vw,620px)}
.pd-gallery .main img{width:100%;height:100%;object-fit:cover}
.pd-gallery .main .badge{position:absolute;top:20px;left:20px;background:var(--teal);color:#fff;padding:8px 20px;border-radius:30px;font-size:15px;z-index:2}
.pd-thumbs{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:14px}
.pd-thumbs img{width:100%;height:clamp(80px,8vw,150px);object-fit:cover;border-radius:12px;cursor:pointer;border:3px solid transparent;opacity:.75;transition:.3s}
.pd-thumbs img.on,.pd-thumbs img:hover{border-color:var(--blue);opacity:1}
.pd-info{background:#fff;border-radius:var(--radius);padding:clamp(24px,2.4vw,44px);box-shadow:var(--shadow)}
.pd-info h2{font-size:clamp(26px,2.6vw,46px);color:var(--blue-dark);margin:10px 0 6px}
.pd-info .sub{color:var(--teal);font-size:clamp(15px,1.1vw,20px);margin-bottom:14px}
.pd-info .pdesc{color:var(--muted);font-size:clamp(14px,1.05vw,19px);line-height:1.9;border-bottom:1px dashed var(--line);padding-bottom:20px;margin-bottom:20px}
.pd-tags{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.pd-tag{background:var(--bg-soft);border:1px solid var(--line);border-radius:10px;padding:12px 16px;font-size:clamp(13px,1vw,17px);color:var(--ink)}
.pd-tag b{color:var(--blue-dark)}
.pd-actions{display:flex;gap:14px;margin-top:26px;flex-wrap:wrap}
.pd-btn{display:inline-flex;align-items:center;gap:10px;padding:16px 38px;border-radius:50px;font-size:17px;font-weight:700;transition:.3s}
.pd-btn.solid{background:linear-gradient(90deg,var(--blue),var(--teal));color:#fff}
.pd-btn.solid:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(46,125,233,.4)}
.pd-btn.ghost{border:2px solid var(--blue);color:var(--blue)}
.pd-btn.ghost:hover{background:var(--blue);color:#fff}
.pd-spec{background:#fff;border-radius:var(--radius);padding:clamp(24px,2.4vw,44px);box-shadow:var(--shadow);margin-top:clamp(26px,3vw,44px)}
.pd-spec h3,.pd-desc h3{font-size:clamp(20px,1.7vw,30px);color:var(--blue-dark);margin-bottom:20px;position:relative;padding-left:18px}
.pd-spec h3::before,.pd-desc h3::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:6px;border-radius:3px;background:linear-gradient(var(--blue),var(--teal))}
.spec-table{width:100%;border-collapse:collapse;table-layout:fixed}
.spec-table th,.spec-table td{padding:15px 18px;text-align:left;font-size:clamp(14px,1vw,18px);border-bottom:1px solid var(--line)}
.spec-table th{width:26%;background:var(--bg-soft);color:var(--blue-dark);font-weight:600}
.spec-table tr:last-child th,.spec-table tr:last-child td{border-bottom:none}
.spec-table td{color:var(--muted)}
.pd-desc{background:#fff;border-radius:var(--radius);padding:clamp(24px,2.4vw,44px);box-shadow:var(--shadow);margin-top:clamp(26px,3vw,44px)}
.pd-desc p{color:var(--muted);font-size:clamp(14px,1.05vw,19px);line-height:2;margin-bottom:14px}
.pd-desc h4{color:var(--blue-dark);font-size:clamp(18px,1.4vw,24px);margin:20px 0 10px}
.pd-desc ul{list-style:none;display:grid;gap:10px}
.pd-desc li{position:relative;padding-left:26px;color:var(--muted);font-size:clamp(14px,1.05vw,19px);line-height:1.8}
.pd-desc li::before{content:"";position:absolute;left:0;top:12px;width:16px;height:16px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--teal));
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z' fill='white'/%3E%3C/svg%3E") center/contain no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z' fill='white'/%3E%3C/svg%3E") center/contain no-repeat}
.pd-related{margin-top:clamp(30px,3.5vw,54px)}
.pd-related h3{font-size:clamp(20px,1.7vw,30px);color:var(--blue-dark);margin-bottom:22px;position:relative;padding-left:18px}
.pd-related h3::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:6px;border-radius:3px;background:linear-gradient(var(--blue),var(--teal))}
.pd-rel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(16px,2vw,28px)}

/* ============ 新闻列表 ============ */
.np-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(18px,2vw,34px)}
.np-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.35s;display:flex;flex-direction:column;cursor:pointer}
.np-card:hover{transform:translateY(-8px);border-color:transparent}
.np-card .imgbox{height:clamp(200px,18vw,360px);overflow:hidden;position:relative}
.np-card .imgbox img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.np-card:hover .imgbox img{transform:scale(1.07)}
.np-card .imgbox .cat-tag{position:absolute;top:16px;left:16px;background:var(--teal);color:#fff;padding:6px 14px;border-radius:26px;font-size:13px}
.np-card .body{padding:clamp(18px,1.7vw,28px);display:flex;flex-direction:column;flex:1}
.np-card .date{color:var(--muted);font-size:14px;display:flex;align-items:center;gap:8px}
.np-card .date::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--teal)}
.np-card h4{font-size:clamp(17px,1.3vw,24px);color:var(--blue-dark);margin:12px 0 10px;line-height:1.5;flex:1}
.np-card p{color:var(--muted);font-size:clamp(13px,.95vw,17px);line-height:1.7}
.np-pager{display:flex;justify-content:center;gap:10px;margin-top:clamp(30px,3vw,46px)}
.np-pager button{min-width:46px;height:46px;border:1px solid #c9ddf2;background:#fff;border-radius:10px;color:var(--ink);font-size:16px;cursor:pointer;transition:.25s}
.np-pager button:hover{border-color:var(--blue);color:var(--blue)}
.np-pager button.on{background:var(--blue);color:#fff;border-color:var(--blue)}
.np-pager button:disabled{opacity:.4;cursor:not-allowed}
.empty{grid-column:1/-1;text-align:center;color:var(--muted);font-size:18px;padding:60px 0}

/* ============ 新闻详情 ============ */
.nd-page{padding:clamp(40px,4vw,80px) 0;background:var(--bg-soft)}
.nd-layout{display:grid;grid-template-columns:1fr 340px;gap:clamp(24px,3vw,46px);align-items:start}
.nd-main{background:#fff;border-radius:var(--radius);padding:clamp(24px,3vw,52px);box-shadow:var(--shadow)}
.nd-main h1{font-size:clamp(24px,2.6vw,44px);color:var(--blue-dark);line-height:1.4;margin-bottom:18px}
.nd-meta{display:flex;gap:22px;flex-wrap:wrap;align-items:center;color:var(--muted);font-size:15px;padding-bottom:22px;border-bottom:1px solid var(--line);margin-bottom:24px}
.nd-meta span{display:flex;align-items:center;gap:8px}
.nd-cover{width:100%;height:clamp(220px,26vw,520px);object-fit:cover;border-radius:14px;margin-bottom:26px}
.nd-main p{color:var(--muted);font-size:clamp(15px,1.1vw,20px);line-height:2;margin-bottom:18px}
.nd-main h3{color:var(--blue-dark);font-size:clamp(19px,1.5vw,26px);margin:26px 0 14px}
.nd-pager{display:flex;justify-content:space-between;gap:16px;margin-top:34px;padding-top:24px;border-top:1px solid var(--line);font-size:15px}
.nd-pager a{color:var(--blue);display:flex;align-items:center;gap:8px;transition:.2s}
.nd-pager a:hover{color:var(--teal)}
.nd-side{display:grid;gap:24px}
.nd-widget{background:#fff;border-radius:var(--radius);padding:clamp(20px,2vw,30px);box-shadow:var(--shadow)}
.nd-widget h4{font-size:clamp(18px,1.4vw,24px);color:var(--blue-dark);margin-bottom:18px;position:relative;padding-left:16px}
.nd-widget h4::before{content:"";position:absolute;left:0;top:4px;bottom:4px;width:5px;border-radius:3px;background:linear-gradient(var(--blue),var(--teal))}
.nd-latest{display:grid;gap:4px}
.nd-latest .nd-row{padding:13px 6px;border-bottom:1px dashed var(--line);cursor:pointer;transition:.2s}
.nd-latest .nd-row:last-child{border-bottom:none}
.nd-latest .nd-row:hover{background:#f6fbff}
.nd-latest .nd-row h5{font-size:15px;color:var(--ink);line-height:1.5;font-weight:500}
.nd-latest .nd-row .d{color:var(--muted);font-size:13px;margin-top:4px}
.nd-widget p{color:var(--muted);font-size:15px;line-height:1.8;margin-bottom:16px}
.nd-more{display:inline-flex;align-items:center;gap:8px;color:var(--blue);font-weight:600;font-size:16px}

/* ============ 联系方式页 ============ */
.ct-page{padding:clamp(40px,4vw,80px) 0;background:#fff}
.ct-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(16px,2vw,30px);margin-bottom:clamp(30px,3.5vw,52px)}
.ct-card{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(22px,2.2vw,38px);text-align:center;transition:.3s}
.ct-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.ct-ic{width:66px;height:66px;margin:0 auto 16px;border-radius:18px;background:linear-gradient(135deg,var(--blue),var(--teal));display:flex;align-items:center;justify-content:center}
.ct-ic svg{width:34px;height:34px;stroke:#fff}
.ct-lb{display:block;color:var(--muted);font-size:14px;letter-spacing:1px;margin-bottom:6px}
.ct-card h4{font-size:clamp(15px,1.15vw,20px);color:var(--blue-dark)}
.ct-main{display:grid;grid-template-columns:1.15fr 1fr;gap:clamp(24px,3vw,46px);align-items:stretch}
.ct-map{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);min-height:420px}
.ct-map img{width:100%;height:100%;min-height:420px;object-fit:cover}
.ct-map-tag{position:absolute;top:20px;left:20px;background:rgba(10,42,77,.85);color:#fff;padding:9px 20px;border-radius:30px;font-size:15px;z-index:2}
.map-pin{position:absolute;left:50%;top:50%;transform:translate(-50%,-100%);color:#ff6b6b;font-size:44px;text-shadow:0 2px 10px rgba(0,0,0,.4)}
.ct-form{background:linear-gradient(160deg,var(--blue-dark),var(--blue-deep));border-radius:var(--radius);padding:clamp(26px,2.6vw,44px);color:#fff;box-shadow:var(--shadow)}
.ct-form h3{font-size:clamp(22px,2vw,32px);margin-bottom:6px}
.ct-form>p{color:#a9c6e2;font-size:15px;margin-bottom:24px}
.ct-frow{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.ct-form .field label{color:#cfe3f7}
.ct-form .in{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.2)}
.ct-form input,.ct-form textarea{color:#fff}
.ct-form .c-msg-count{display:block;text-align:right;color:#7f9bb9;font-size:13px;margin-top:6px}
.ct-form .count{color:#7f9bb9;font-size:13px}

/* ============ 响应式：平板 / 手机 ============ */
@media (max-width:1180px){
  .adv-grid{grid-template-columns:repeat(2,1fr)}
  .sol-grid.sol4{grid-template-columns:repeat(2,1fr)}
  .about-grid{grid-template-columns:1fr;gap:30px}
  .news-grid{grid-template-columns:1fr;gap:30px}
  .contact-grid{grid-template-columns:1fr;gap:34px}
  .ab-intro-grid{grid-template-columns:1fr;gap:36px}
  .value-grid{grid-template-columns:1fr 1fr}
  .cert-grid{grid-template-columns:repeat(2,1fr)}
  .pc-grid,.pd-rel-grid{grid-template-columns:repeat(2,1fr)}
  .np-grid{grid-template-columns:repeat(2,1fr)}
  .ct-cards{grid-template-columns:repeat(2,1fr)}
  .ct-main{grid-template-columns:1fr}
  .pd-layout{grid-template-columns:1fr;gap:28px}
  .nd-layout{grid-template-columns:1fr}
}
@media (max-width:900px){
  .main-nav{position:fixed;top:90px;right:0;background:#fff;flex-direction:column;align-items:flex-start;
    width:min(78vw,360px);height:calc(100vh - 90px);padding:30px 34px;gap:6px;box-shadow:-8px 0 30px rgba(18,49,79,.14);
    transform:translateX(100%);transition:transform .35s}
  .main-nav.open{transform:translateX(0)}
  .main-nav a{font-size:22px;padding:14px 0;width:100%;border-bottom:1px solid var(--line)}
  .nav-toggle{display:flex}
}
@media (max-width:680px){
  .site-header .wrap{height:72px}
  .logo{font-size:20px;gap:10px}
  .logo .logo-mark{width:40px;height:40px}
  .adv-grid{grid-template-columns:1fr}
  .sol-grid,.sol-grid.sol4{grid-template-columns:1fr}
  .hero-cta{padding:15px 34px;font-size:17px}
  .cat-tab{padding:11px 22px;font-size:15px}
  .product-swiper .swiper-button-prev,.product-swiper .swiper-button-next{display:none}
  .hero-swiper .swiper-button-prev,.hero-swiper .swiper-button-next{width:46px;height:46px}
  .hero-swiper .swiper-button-prev::after,.hero-swiper .swiper-button-next::after{font-size:16px}
  .ab-exp{right:6px;bottom:20px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:24px}
  .stat:nth-child(2)::after{display:none}
  .stat{padding:12px 0}
  .value-grid{grid-template-columns:1fr}
  .cert-grid{grid-template-columns:1fr}
  .timeline{grid-template-columns:1fr;padding-left:44px}
  .tl-item{grid-template-columns:1fr;gap:10px}
  .tl-year{font-size:22px}
  .pc-grid,.pd-rel-grid{grid-template-columns:1fr}
  .np-grid{grid-template-columns:1fr}
  .ct-cards{grid-template-columns:1fr}
  .ct-frow{grid-template-columns:1fr}
  .pd-tags{grid-template-columns:1fr}
  .cta-strip .wrap{justify-content:center;text-align:center}
}