:root{
  --blue-900:#00205b;
  --blue-800:#003087;
  --blue-600:#0055b8;
  --blue-500:#0072ce;
  --blue-100:#e6f0fa;
  --blue-50:#f2f7fc;
  --ink:#1a2332;
  --gray-700:#4a5568;
  --gray-500:#718096;
  --gray-200:#e2e8f0;
  --gray-100:#f5f7fa;
  --white:#ffffff;
  --accent:#00a3e0;
  --max:1200px;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--white);line-height:1.7;font-size:16px;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
ul{list-style:none;}
.container{max-width:var(--max);margin:0 auto;padding:0 24px;}

/* ===== Top utility bar ===== */
.topbar{background:var(--blue-900);color:#cfe0f5;font-size:13px;}
.topbar .container{display:flex;justify-content:space-between;align-items:center;height:36px;}
.topbar a{color:#cfe0f5;transition:color .2s;}
.topbar a:hover{color:#fff;}
.topbar .links{display:flex;gap:20px;}
.topbar .phone{display:flex;align-items:center;gap:6px;}

/* ===== Header / Nav ===== */
.header{background:var(--white);border-bottom:1px solid var(--gray-200);position:sticky;top:0;z-index:100;box-shadow:0 1px 8px rgba(0,32,91,.06);}
.header .container{display:flex;align-items:center;justify-content:space-between;height:76px;}
.logo{display:flex;align-items:center;gap:12px;}
.logo-mark{width:44px;height:44px;flex:none;}
.logo-text{line-height:1.25;}
.logo-text .cn{font-size:17.5px;font-weight:700;color:var(--blue-800);letter-spacing:.5px;white-space:nowrap;}
.logo-text .en{font-size:9.5px;color:var(--gray-500);letter-spacing:.2px;white-space:nowrap;}
.nav{display:flex;align-items:center;gap:0;}
.nav>li>a{display:block;padding:26px 13px;font-size:15px;font-weight:500;color:var(--ink);border-bottom:3px solid transparent;transition:all .2s;white-space:nowrap;}
.nav>li>a:hover,.nav>li>a.active{color:var(--blue-600);border-bottom-color:var(--blue-600);}
.nav-cta{margin-left:10px;}
.nav-cta .btn{white-space:nowrap;padding:9px 18px;}
@media (max-width:1150px){.logo-text .en{display:none;}.nav>li>a{padding:26px 10px;font-size:14.5px;}}
.btn{display:inline-block;padding:10px 24px;border-radius:4px;font-size:14.5px;font-weight:600;cursor:pointer;transition:all .2s;border:none;}
.btn-primary{background:var(--blue-600);color:#fff;}
.btn-primary:hover{background:var(--blue-800);}
.btn-outline{border:1.5px solid #fff;color:#fff;background:transparent;}
.btn-outline:hover{background:rgba(255,255,255,.15);}
.hamburger{display:none;background:none;border:none;cursor:pointer;padding:8px;}
.hamburger span{display:block;width:24px;height:2.5px;background:var(--blue-800);margin:5px 0;border-radius:2px;transition:.3s;}

/* ===== Hero carousel (首页) ===== */
.hero{position:relative;overflow:hidden;color:#fff;}
.slides{display:flex;transition:transform .6s ease;}
.slide{min-width:100%;min-height:480px;display:flex;align-items:center;position:relative;padding:70px 0;}
.slide-1{background:linear-gradient(115deg,#00205b 0%,#003087 45%,#0055b8 100%);}
.slide-2{background:linear-gradient(115deg,#001a4d 0%,#00318f 55%,#0072ce 100%);}
.slide-3{background:linear-gradient(115deg,#002b6b 0%,#004aa5 50%,#00a3e0 100%);}
.slide::after{content:"";position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='400' height='400' viewBox='0 0 400 400'%3E%3Cg fill='none' stroke='rgba(255,255,255,0.06)' stroke-width='1.5'%3E%3Ccircle cx='200' cy='200' r='80'/%3E%3Ccircle cx='200' cy='200' r='140'/%3E%3Ccircle cx='200' cy='200' r='190'/%3E%3C/g%3E%3C/svg%3E") right -60px center no-repeat;pointer-events:none;}
.slide .container{position:relative;z-index:2;}
.slide .eyebrow{font-size:14px;letter-spacing:3px;color:#8fc4f0;font-weight:600;margin-bottom:14px;}
.slide h1,.slide h2{font-size:40px;font-weight:700;line-height:1.35;margin-bottom:18px;max-width:640px;}
.slide p{font-size:17px;color:#d5e5f7;max-width:560px;margin-bottom:30px;}
.slide .actions{display:flex;gap:14px;flex-wrap:wrap;}
.hero-dots{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:5;}
.hero-dots button{width:34px;height:4px;border-radius:2px;border:none;background:rgba(255,255,255,.35);cursor:pointer;transition:background .3s;}
.hero-dots button.on{background:#fff;}
.hero-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:5;background:rgba(255,255,255,.12);border:none;color:#fff;width:44px;height:44px;border-radius:50%;font-size:20px;cursor:pointer;transition:background .2s;}
.hero-arrow:hover{background:rgba(255,255,255,.28);}
.hero-arrow.prev{left:18px;}
.hero-arrow.next{right:18px;}

/* ===== 内页顶部横幅 ===== */
.page-hero{background:linear-gradient(115deg,var(--blue-900) 0%,var(--blue-800) 50%,var(--blue-600) 100%);color:#fff;padding:56px 0 48px;position:relative;overflow:hidden;}
.page-hero::after{content:"";position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='400' height='400' viewBox='0 0 400 400'%3E%3Cg fill='none' stroke='rgba(255,255,255,0.06)' stroke-width='1.5'%3E%3Ccircle cx='200' cy='200' r='80'/%3E%3Ccircle cx='200' cy='200' r='140'/%3E%3Ccircle cx='200' cy='200' r='190'/%3E%3C/g%3E%3C/svg%3E") right -60px center no-repeat;pointer-events:none;}
.page-hero .container{position:relative;z-index:2;}
.page-hero h1{font-size:32px;font-weight:700;margin-bottom:8px;}
.page-hero .sub{color:#c9ddf5;font-size:16px;max-width:680px;}
.crumb{font-size:13.5px;color:#9fc2e8;margin-bottom:14px;}
.crumb a{color:#cfe0f5;}
.crumb a:hover{color:#fff;text-decoration:underline;}
.crumb span{margin:0 6px;color:#6f97c9;}

/* ===== Section base ===== */
.section{padding:76px 0;}
.section-alt{background:var(--gray-100);}
.section-head{text-align:center;max-width:720px;margin:0 auto 48px;}
.section-head .kicker{font-size:13.5px;letter-spacing:3px;color:var(--blue-500);font-weight:700;margin-bottom:10px;}
.section-head h2{font-size:32px;color:var(--blue-900);font-weight:700;margin-bottom:14px;}
.section-head p{color:var(--gray-700);font-size:16px;}

/* ===== Cards ===== */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.card{background:#fff;border:1px solid var(--gray-200);border-radius:8px;overflow:hidden;transition:all .25s;display:flex;flex-direction:column;}
.card:hover{transform:translateY(-6px);box-shadow:0 14px 34px rgba(0,48,135,.14);border-color:var(--blue-500);}
.card-visual{height:150px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--blue-50),var(--blue-100));}
.card-visual svg{width:72px;height:72px;}
.card-body{padding:22px 22px 26px;flex:1;display:flex;flex-direction:column;}
.card-body h3{font-size:18px;color:var(--blue-900);margin-bottom:10px;font-weight:700;}
.card-body p{font-size:14px;color:var(--gray-700);flex:1;margin-bottom:16px;}
.card-link{font-size:14px;font-weight:600;color:var(--blue-600);}
.card-link::after{content:" →";transition:margin .2s;}
.card:hover .card-link::after{margin-left:4px;}

/* ===== 行业卡片 ===== */
.industry{position:relative;border-radius:8px;overflow:hidden;color:#fff;padding:150px 28px 28px;min-height:260px;display:flex;flex-direction:column;justify-content:flex-end;transition:transform .25s;}
.industry:hover{transform:translateY(-6px);}
.ind-pharma{background:linear-gradient(160deg,#003087 10%,#0072ce 90%);}
.ind-chem{background:linear-gradient(160deg,#00205b 10%,#0055b8 90%);}
.ind-bio{background:linear-gradient(160deg,#004aa5 10%,#00a3e0 90%);}
.industry h3{font-size:21px;margin-bottom:8px;font-weight:700;}
.industry p{font-size:14px;color:#d5e5f7;}
.industry .icon{position:absolute;top:26px;left:28px;width:52px;height:52px;opacity:.95;}

/* ===== 品牌 ===== */
.brands{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.brand{background:#fff;border:1px solid var(--gray-200);border-radius:8px;padding:30px 24px;text-align:center;transition:all .25s;}
.brand:hover{box-shadow:0 10px 26px rgba(0,48,135,.12);border-color:var(--blue-500);}
.brand .name{font-size:20px;font-weight:800;color:var(--blue-800);letter-spacing:1px;margin-bottom:6px;}
.brand .from{font-size:13px;color:var(--gray-500);margin-bottom:10px;}
.brand p{font-size:13.5px;color:var(--gray-700);}

/* ===== 关于 ===== */
.about-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;}
.about-text h2{font-size:30px;color:var(--blue-900);margin-bottom:8px;}
.about-text .kicker{font-size:13.5px;letter-spacing:3px;color:var(--blue-500);font-weight:700;margin-bottom:10px;}
.about-text p{color:var(--gray-700);margin-bottom:16px;}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:28px;}
.stat{background:var(--blue-50);border-radius:8px;padding:20px 16px;text-align:center;}
.stat .num{font-size:30px;font-weight:800;color:var(--blue-600);line-height:1.2;}
.stat .num span{font-size:16px;font-weight:600;}
.stat .label{font-size:13.5px;color:var(--gray-700);margin-top:4px;}
.about-visual{background:linear-gradient(150deg,var(--blue-800),var(--blue-500));border-radius:10px;min-height:360px;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;}
.about-visual svg{width:64%;height:auto;}

/* ===== 服务 ===== */
.services{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.service{text-align:center;padding:34px 22px;background:#fff;border-radius:8px;border:1px solid var(--gray-200);transition:all .25s;}
.service:hover{box-shadow:0 10px 26px rgba(0,48,135,.12);}
.service .ico{width:58px;height:58px;margin:0 auto 16px;background:var(--blue-100);border-radius:50%;display:flex;align-items:center;justify-content:center;}
.service .ico svg{width:30px;height:30px;}
.service h3{font-size:17px;color:var(--blue-900);margin-bottom:8px;}
.service p{font-size:13.5px;color:var(--gray-700);}

/* ===== 服务流程 ===== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step;}
.step{background:#fff;border:1px solid var(--gray-200);border-radius:8px;padding:26px 22px;position:relative;}
.step .no{width:36px;height:36px;border-radius:50%;background:var(--blue-600);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;margin-bottom:14px;font-size:16px;}
.step h3{font-size:16.5px;color:var(--blue-900);margin-bottom:6px;}
.step p{font-size:13.5px;color:var(--gray-700);}

/* ===== 新闻 ===== */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news{background:#fff;border:1px solid var(--gray-200);border-radius:8px;padding:26px;transition:all .25s;}
.news:hover{box-shadow:0 10px 26px rgba(0,48,135,.12);border-color:var(--blue-500);}
.news .date{font-size:13px;color:var(--blue-500);font-weight:600;margin-bottom:10px;}
.news h3{font-size:17px;color:var(--ink);margin-bottom:10px;line-height:1.5;}
.news p{font-size:14px;color:var(--gray-700);}
.news-article{background:#fff;border:1px solid var(--gray-200);border-radius:8px;padding:32px 34px;margin-bottom:24px;}
.news-article .date{font-size:13px;color:var(--blue-500);font-weight:600;margin-bottom:8px;}
.news-article h2{font-size:21px;color:var(--blue-900);margin-bottom:12px;}
.news-article p{color:var(--gray-700);font-size:15px;}

/* ===== CTA band ===== */
.cta-band{background:linear-gradient(115deg,var(--blue-900),var(--blue-600));color:#fff;padding:56px 0;text-align:center;}
.cta-band h2{font-size:28px;margin-bottom:12px;}
.cta-band p{color:#d5e5f7;margin-bottom:26px;font-size:16px;}

/* ===== 联系 ===== */
.contact-wrap{display:grid;grid-template-columns:1fr 1fr;gap:48px;}
.contact-info h3{font-size:20px;color:var(--blue-900);margin-bottom:18px;}
.contact-item{display:flex;gap:14px;margin-bottom:20px;align-items:flex-start;}
.contact-item .ico{width:42px;height:42px;flex:none;background:var(--blue-100);border-radius:8px;display:flex;align-items:center;justify-content:center;}
.contact-item .ico svg{width:22px;height:22px;}
.contact-item .label{font-size:13px;color:var(--gray-500);}
.contact-item .val{font-size:16px;font-weight:600;color:var(--ink);}
.contact-map{background:linear-gradient(150deg,var(--blue-50),var(--blue-100));border:1px solid var(--gray-200);border-radius:10px;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px;text-align:center;color:var(--gray-700);}
.contact-map svg{width:64px;height:64px;margin-bottom:14px;}
.contact-map .addr{font-weight:600;color:var(--blue-900);font-size:16px;margin-bottom:6px;}

/* ===== 产品详情页 ===== */
.detail-wrap{display:grid;grid-template-columns:1fr 330px;gap:44px;align-items:start;}
.detail-main>h2{font-size:23px;color:var(--blue-900);margin:34px 0 14px;padding-left:14px;border-left:4px solid var(--blue-600);line-height:1.4;}
.detail-main>h2:first-child{margin-top:0;}
.detail-main p{color:var(--gray-700);margin-bottom:14px;}
.features{margin:6px 0 10px;}
.features li{position:relative;padding:7px 0 7px 28px;color:var(--gray-700);}
.features li::before{content:"";position:absolute;left:4px;top:15px;width:8px;height:8px;border-radius:50%;background:var(--blue-500);}
.detail-visual{height:220px;border-radius:8px;background:linear-gradient(135deg,var(--blue-50),var(--blue-100));display:flex;align-items:center;justify-content:center;margin-bottom:28px;}
.detail-visual svg{width:110px;height:110px;}
.side-card{background:var(--blue-50);border:1px solid var(--gray-200);border-radius:8px;padding:26px;position:sticky;top:100px;}
.side-card h3{font-size:17px;color:var(--blue-900);margin-bottom:14px;}
.side-card p{font-size:14px;color:var(--gray-700);margin-bottom:10px;}
.side-card .tel{font-size:20px;font-weight:800;color:var(--blue-600);margin:6px 0 16px;}
.side-card .btn{display:block;text-align:center;}
.side-links{margin-top:22px;padding-top:18px;border-top:1px solid var(--gray-200);}
.side-links h4{font-size:14.5px;color:var(--blue-900);margin-bottom:10px;}
.side-links li{margin-bottom:8px;}
.side-links a{font-size:14px;color:var(--gray-700);}
.side-links a:hover{color:var(--blue-600);}
.side-links a.cur{color:var(--blue-600);font-weight:600;}

/* ===== 页脚 ===== */
.footer{background:var(--blue-900);color:#a9c2e2;font-size:14px;}
.footer-main{padding:56px 0 40px;display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px;}
.footer h4{color:#fff;font-size:15.5px;margin-bottom:18px;font-weight:600;}
.footer .flogo{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer .flogo .cn{color:#fff;font-weight:700;font-size:17px;}
.footer p{margin-bottom:8px;}
.footer ul li{margin-bottom:10px;}
.footer a:hover{color:#fff;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:18px 0;font-size:13px;}
.footer-bottom .container{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;}
.footer-bottom a:hover{color:#fff;}

/* ===== 回到顶部 ===== */
#toTop{position:fixed;right:26px;bottom:26px;width:44px;height:44px;border-radius:50%;background:var(--blue-600);color:#fff;border:none;font-size:18px;cursor:pointer;opacity:0;pointer-events:none;transition:opacity .3s;z-index:90;box-shadow:0 6px 18px rgba(0,48,135,.35);}
#toTop.show{opacity:1;pointer-events:auto;}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .grid-4,.brands,.services,.steps{grid-template-columns:repeat(2,1fr);}
  .grid-3,.news-grid{grid-template-columns:1fr 1fr;}
  .grid-2,.about-wrap,.contact-wrap,.detail-wrap{grid-template-columns:1fr;}
  .side-card{position:static;}
  .footer-main{grid-template-columns:1fr 1fr;}
  .slide h1,.slide h2{font-size:32px;}
}
@media (max-width:720px){
  .nav{display:none;position:absolute;top:76px;left:0;right:0;background:#fff;flex-direction:column;gap:0;box-shadow:0 12px 24px rgba(0,32,91,.12);padding:8px 0 16px;}
  .nav.open{display:flex;}
  .nav>li{width:100%;}
  .nav>li>a{padding:14px 24px;border-bottom:none;}
  .nav-cta{margin:10px 24px 0;}
  .hamburger{display:block;}
  .topbar .links{display:none;}
  .grid-4,.grid-3,.grid-2,.brands,.services,.news-grid,.steps{grid-template-columns:1fr;}
  .footer-main{grid-template-columns:1fr;}
  .slide h1,.slide h2{font-size:26px;}
  .slide{min-height:420px;}
  .stats{grid-template-columns:repeat(3,1fr);gap:10px;}
  .section{padding:56px 0;}
  .hero-arrow{display:none;}
  .page-hero h1{font-size:26px;}
}