:root{--blue:#145da0;--blue-d:#0e3a66;--cyan:#00a8c8;--ink:#1d3b55;--gray:#5a7893;--line:#dce8f2;--bg:#f4f8fb;--accent:#f0a828;--radius:14px;--shadow:0 8px 28px rgba(14,58,102,.09)}
*{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:#fff;line-height:1.75;font-size:16px}
a{color:var(--blue);text-decoration:none}
img,svg{max-width:100%}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.center{text-align:center}
h1,h2,h3,h4{color:var(--blue-d);line-height:1.35}

/* header */
.site-header{position:sticky;top:0;z-index:100;background:#fff;box-shadow:0 1px 0 var(--line)}
.h-top{background:var(--blue-d);color:#cfe2f3;font-size:13px}
.h-top-in{display:flex;justify-content:space-between;padding:6px 24px;max-width:1200px;margin:0 auto;flex-wrap:wrap;gap:4px}
.h-main{display:flex;align-items:center;justify-content:space-between;padding:12px 24px;max-width:1200px;margin:0 auto}
.logo{display:flex;align-items:center;gap:10px}
.logo-img{height:46px;width:auto}
.f-logo{height:54px;width:auto;margin-bottom:10px;filter:drop-shadow(0 2px 6px rgba(0,0,0,.35))}
.logo-mark{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:10px;background:linear-gradient(135deg,var(--blue),var(--cyan));color:#fff;font-weight:800;font-size:22px}
.logo-txt b{font-size:22px;color:var(--blue-d);letter-spacing:.5px;display:block;line-height:1.1}
.logo-txt i{font-style:normal;font-size:12px;color:var(--gray)}
.main-nav>ul{display:flex;list-style:none;gap:6px}
.main-nav>ul>li>a{display:block;padding:10px 18px;border-radius:10px;color:var(--ink);font-weight:600;font-size:16px;transition:.2s}
.main-nav>ul>li>a:hover,.main-nav>ul>li>a.active{background:var(--bg);color:var(--blue)}
.main-nav>ul>li{position:relative}
.dropdown{display:none;position:absolute;top:100%;left:50%;transform:translateX(-50%);background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid var(--line);padding:20px;min-width:560px}
.dropdown.wide{min-width:880px;max-width:96vw}
.main-nav li:hover .dropdown{display:block;animation:fadeIn .18s ease}
@keyframes fadeIn{from{opacity:0;transform:translate(-50%,6px)}to{opacity:1;transform:translate(-50%,0)}}
.dd-cols{display:flex;gap:24px}
.dd-col{min-width:150px;max-width:230px}
.dd-col h5{font-size:15px;margin-bottom:8px}
.dd-col a{display:block;padding:5px 0;font-size:13.5px;color:var(--gray);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.dd-col a:hover{color:var(--blue)}
.dd-col .dd-more{color:var(--cyan);font-weight:600}
.dd-note{font-size:12.5px;color:var(--gray)}
.menu-btn{display:none;background:none;border:0;cursor:pointer;padding:8px}
.menu-btn span{display:block;width:24px;height:3px;background:var(--blue-d);margin:5px 0;border-radius:2px;transition:.25s}
.mobile-menu{display:none;background:#fff;border-top:1px solid var(--line);padding:12px 24px 24px;max-height:70vh;overflow:auto}
.mobile-menu a{display:block;padding:10px 4px;font-weight:600;border-bottom:1px solid var(--line)}
.mobile-menu details summary{padding:12px 4px;font-weight:700;cursor:pointer;list-style:none}
.mobile-menu details[open] summary{color:var(--blue)}
.m-sub{padding-left:14px}
.m-sub a{font-weight:400;font-size:14px;color:var(--gray);border-bottom:1px dashed var(--line)}
.m-contact{padding:14px 4px;color:var(--gray);font-size:14px}

/* hero */
.hero{position:relative;height:520px;overflow:hidden}
.hero-slide{position:absolute;inset:0;display:flex;align-items:center;opacity:0;transition:opacity .8s ease;color:#fff}
.hero-slide.active{opacity:1}
.hero-slide.g1{background:linear-gradient(115deg,#0e3a66 0%,#145da0 45%,#00a8c8 100%)}
.hero-slide.g2{background:linear-gradient(115deg,#0d3b4e 0%,#0f7d8c 50%,#3aa98f 100%)}
.hero-slide.g3{background:linear-gradient(115deg,#233246 0%,#3d5a80 50%,#6b90c0 100%)}
.hero-in{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:60px;padding-bottom:40px}
.hero-txt h1{color:#fff;font-size:42px;margin-bottom:16px;max-width:640px}
.hero-txt p{font-size:18px;color:#e3f1fa;max-width:560px;margin-bottom:28px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.hero-art-wrap{max-width:44%;display:flex;justify-content:flex-end}
.hero-dots{position:absolute;bottom:22px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:5}
.hero-dots .dot{width:34px;height:5px;border-radius:3px;background:rgba(255,255,255,.4);cursor:pointer;transition:.25s}
.hero-dots .dot.on{background:#fff;width:52px}

/* buttons */
.btn{display:inline-block;padding:13px 30px;border-radius:999px;background:var(--blue);color:#fff;font-weight:600;transition:.25s;border:1.5px solid var(--blue)}
.btn:hover{background:var(--blue-d);transform:translateY(-2px);box-shadow:0 8px 20px rgba(20,93,160,.35)}
.btn-light{background:#fff;color:var(--blue);border-color:#fff}
.btn-light:hover{background:#f2f9ff;color:var(--blue-d)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-ghost2{background:#fff;color:var(--blue);border-color:var(--line)}
.btn-ghost2:hover{border-color:var(--blue)}

/* stats */
.stats{background:var(--blue-d);color:#fff}
.stats-in{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;text-align:center;padding-top:34px;padding-bottom:34px}
.stats b{font-size:44px;display:block;font-family:Georgia,serif;color:#9fdcf0}
.stats span{color:#cfe2f3;font-size:14.5px}

/* sections */
.sec{padding:72px 0}
.sec-alt{background:var(--bg)}
.sec-head{margin-bottom:44px}
.sec-head h2{font-size:32px}
.sec-head p{color:var(--gray);margin-top:6px}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.25s}
.card:hover{box-shadow:var(--shadow);transform:translateY(-4px);border-color:#bcd8ee}
.adv h3{font-size:19px;margin:10px 0 8px}
.adv p{color:var(--gray);font-size:14.5px}
.adv-ico{font-size:30px}

/* kit cards */
.kit-card{display:flex;flex-direction:column;padding:14px}
.kit-pic{background:linear-gradient(160deg,#f6fafd,#eaf2f9);border-radius:10px;display:flex;justify-content:center;padding:8px}
.kit-card:hover .kit-pic svg{transform:scale(1.04)}
.kit-pic svg{transition:.3s}
.kit-info h4{font-size:16px;margin:12px 0 2px}
.kit-info p{color:var(--gray);font-size:13px;margin-bottom:8px}
.tag{display:inline-block;font-size:12px;padding:2px 10px;border-radius:999px;background:#e2f1fa;color:var(--blue);font-weight:600}

/* service cards */
.svc-head{display:flex;gap:14px;align-items:flex-start;margin-bottom:10px}
.svc-ico{font-size:30px;width:54px;height:54px;display:flex;align-items:center;justify-content:center;background:var(--bg);border-radius:12px;flex-shrink:0}
.svc-card h3 a{color:var(--blue-d)}
.svc-card p.svc-tag{color:var(--cyan);font-size:13.5px;font-weight:600;margin-bottom:8px}
.svc-card .svc-desc{color:var(--gray);font-size:14.5px;margin-bottom:12px}
.svc-links{display:flex;flex-wrap:wrap;gap:8px}
.svc-links a{font-size:13px;background:var(--bg);border-radius:8px;padding:5px 11px;color:var(--ink)}
.svc-links a:hover{background:var(--blue);color:#fff}
.svc-links .more{background:none;color:var(--cyan);font-weight:700}
.svc-item{display:flex;flex-direction:column;gap:8px}
.svc-item p{color:var(--gray);font-size:14px}
.svc-item .more{color:var(--cyan);font-weight:700;font-size:14px;margin-top:auto}
.svc-item-head{display:flex;gap:12px;align-items:flex-start}

/* chips */
.chips{display:flex;flex-wrap:wrap;gap:14px}
.chip{background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 20px;transition:.2s}
.chip:hover{border-color:var(--blue);box-shadow:var(--shadow)}
.chip b{display:block;color:var(--blue-d)}
.chip span{font-size:12.5px;color:var(--gray)}

/* mod groups & chips */
.mod-group{margin-bottom:36px}
.mod-group h3{display:flex;align-items:center;gap:14px;margin-bottom:16px;flex-wrap:wrap}
.mod-group h3 b{color:#fff;font-size:15px;padding:4px 14px;border-radius:8px}
.mod-group h3 span{color:var(--gray);font-size:14px;font-weight:400}
.mod-chips{display:flex;flex-wrap:wrap;gap:10px}
.mod-chip{position:relative;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:10px;padding:9px 16px;min-width:150px;transition:.2s}
.mod-chip:hover{border-color:var(--blue);box-shadow:var(--shadow);transform:translateY(-2px)}
.mod-chip b{color:var(--ink);font-size:15px}
.mod-chip span{font-size:11.5px;color:var(--gray);white-space:nowrap}
.mod-chip i{position:absolute;top:-8px;right:-6px;font-style:normal;background:var(--accent);color:#fff;font-size:11px;padding:1px 8px;border-radius:999px;font-weight:700}
.mod-chip.k{border-left:4px solid var(--accent)}
.mod-chip.r{border-left:4px solid var(--cyan)}
.mod-chip.d{border-left:4px solid #b0c4d6}
.legend{margin:18px 0 30px;color:var(--gray);font-size:14px;display:flex;gap:18px;flex-wrap:wrap;align-items:center}
.legend .mod-chip{min-width:0;padding:4px 14px}

/* page hero & crumbs */
.page-hero{padding:64px 0 48px;color:#fff}
.page-hero h1{color:#fff;font-size:38px}
.page-hero p{color:#e3f1fa;margin-top:8px}
.ph-products{background:linear-gradient(115deg,#0e3a66,#145da0 55%,#00a8c8)}
.ph-omics{background:linear-gradient(115deg,#0d3b4e,#0f7d8c 55%,#3aa98f)}
.ph-support{background:linear-gradient(115deg,#233246,#3d5a80 55%,#6b90c0)}
.ph-about{background:linear-gradient(115deg,#4a3b12,#8a6a1d 55%,#c78f1d)}
.crumbs{margin:22px auto;font-size:14px;color:var(--gray)}
.crumbs a{color:var(--gray)}
.crumbs a:hover{color:var(--blue)}
.crumbs span{margin:0 8px;color:#b8cbdc}
.crumbs em{font-style:normal;color:var(--blue-d);font-weight:600}

/* content pages */
.lead{font-size:17px;color:var(--ink);background:#fff;border-left:4px solid var(--cyan);padding:18px 24px;border-radius:0 var(--radius) var(--radius) 0;margin-bottom:8px}
.lead p{margin:0}
.content h2.ct{font-size:25px;margin:44px 0 16px;padding-bottom:10px;border-bottom:2px solid var(--line)}
.two-col{display:grid;grid-template-columns:250px 1fr;gap:36px;align-items:start}
.side{background:var(--bg);border-radius:var(--radius);padding:22px;position:sticky;top:130px}
.side h4{margin-bottom:10px;font-size:15px}
.side-link{display:block;padding:7px 0;color:var(--gray);font-size:14px;border-bottom:1px dashed var(--line)}
.side-link:hover{color:var(--blue)}
.side-note{font-size:13.5px;color:var(--gray);line-height:1.7}
.adv-ul{list-style:none;display:grid;gap:10px}
.adv-ul li{background:var(--bg);border-radius:10px;padding:12px 18px;font-size:15px}
.wf{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 10px;overflow-x:auto}
.flow-img{width:100%;height:auto;display:block;border-radius:8px}
.platform-pic{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin:26px 0 8px;text-align:center}
.platform-pic img{max-width:100%;height:auto}
.stat-band{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;text-align:center;background:var(--blue-d);border-radius:var(--radius);padding:30px 20px;margin:30px 0}
.stat-band b{font-size:40px;display:block;font-family:Georgia,serif;color:#9fdcf0}
.stat-band span{color:#cfe2f3;font-size:14px}
.f-sitemap{color:#9fdcf0}
.sm-sec{margin-bottom:34px}
.sm-sec h3{font-size:20px;border-left:4px solid var(--cyan);padding-left:12px;margin-bottom:12px}
.sm-sec h3 em{font-style:normal;font-size:13px;color:var(--gray);margin-left:10px}
.sm-sec ul{list-style:none}
.sm-item{display:flex;justify-content:space-between;gap:14px;padding:7px 12px;border-bottom:1px dashed var(--line);font-size:15px}
.sm-item span{color:#9ab0c2;font-size:12.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sm-item.d1{padding-left:28px}.sm-item.d2{padding-left:48px}.sm-item.d3{padding-left:68px}
.wf svg{min-width:760px;display:block;margin:0 auto}
.apps{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.app-item{background:#fff;border:1px solid var(--line);border-left:4px solid var(--cyan);border-radius:10px;padding:13px 18px;font-size:14.5px}
.tbl{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius)}
table{width:100%;border-collapse:collapse;font-size:14.5px;background:#fff}
th,td{padding:12px 18px;text-align:left;border-bottom:1px solid var(--line)}
thead th{background:var(--blue-d);color:#fff;font-weight:600}
tbody tr:hover{background:#f6fafd}
table.kv th{width:180px;background:var(--bg);color:var(--blue-d);font-weight:600;white-space:nowrap}
.ref{font-size:14px;color:var(--gray);margin-bottom:10px;line-height:1.7}
.note{font-size:13.5px;color:var(--gray);margin-top:10px}
.mod-kit,.ptm-callout,.contact-card{display:flex;justify-content:space-between;align-items:center;gap:20px;background:linear-gradient(115deg,var(--blue-d),var(--blue));color:#fff;border-radius:var(--radius);padding:26px 30px;margin-top:30px;flex-wrap:wrap}
.mod-kit h3,.ptm-callout h3,.contact-card h3{color:#fff;margin-bottom:6px}
.mod-kit p,.ptm-callout p,.contact-card p{color:#dbeefd;font-size:14.5px}
.mod-group .grid4{margin-top:4px}

/* PDP */
.pdp{padding:36px 0 8px}
.pdp-main{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.pdp-pic{background:linear-gradient(160deg,#f6fafd,#e6f0f8);border:1px solid var(--line);border-radius:var(--radius);padding:18px;display:flex;justify-content:center}
.crumb-tag{display:inline-block;font-size:13px;font-weight:700;padding:3px 12px;border-radius:999px;margin-bottom:12px}
.pdp-info h1{font-size:30px;margin-bottom:4px}
.pdp-info .en{color:var(--gray);font-size:15px;margin-bottom:18px}
.pdp-ul{list-style:none;margin-bottom:22px;display:grid;gap:8px}
.pdp-ul li{padding-left:26px;position:relative;color:var(--ink)}
.pdp-ul li::before{content:"✓";position:absolute;left:0;color:var(--cyan);font-weight:800}
.pdp-cta{display:flex;gap:14px;margin-bottom:14px;flex-wrap:wrap}
.pdp-cat{font-size:14px;color:var(--gray)}
.steps-wrap{display:grid;gap:14px}
.step{display:flex;gap:16px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 20px}
.step-no{flex-shrink:0;width:34px;height:34px;border-radius:50%;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800}
.step h4{margin-bottom:4px}
.step p{color:var(--gray);font-size:14.5px}
.notes{padding-left:20px;color:var(--gray);font-size:14.5px;display:grid;gap:8px}

/* science support */
.flow-steps{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin:26px 0 10px}
.fstep{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 10px;text-align:center}
.fstep b{display:block;font-size:22px;color:var(--cyan);font-family:Georgia,serif}
.fstep span{font-size:13.5px;color:var(--ink);font-weight:600}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden}
.faq summary{padding:16px 22px;cursor:pointer;font-weight:700;list-style:none;position:relative}
.faq summary::after{content:"+";position:absolute;right:20px;top:12px;font-size:22px;color:var(--cyan)}
.faq details[open] summary::after{content:"−"}
.faq details p{padding:0 22px 16px;color:var(--gray);font-size:14.5px}

/* home coop */
.coop-home{display:grid;grid-template-columns:1.15fr 1fr;gap:40px;align-items:center}
.coop-home h2{font-size:30px;margin-bottom:14px}
.coop-home p{color:var(--gray)}
.coop-home ul{list-style:none;margin:18px 0 26px;display:grid;gap:10px;color:var(--ink)}
.coop-art{display:flex;justify-content:center}

/* cta */
.cta-band{background:linear-gradient(115deg,var(--blue-d),var(--blue) 60%,var(--cyan));color:#fff;padding:56px 0}
.cta-in{display:flex;justify-content:space-between;align-items:center;gap:26px;flex-wrap:wrap}
.cta-band h3{color:#fff;font-size:26px;margin-bottom:6px}
.cta-band p{color:#dbeefd}

/* footer */
.site-footer{background:var(--blue-d);color:#bcd6ea;margin-top:auto}
.f-top{display:grid;grid-template-columns:300px 1fr;gap:40px;padding-top:52px;padding-bottom:36px}
.f-brand b{color:#fff;font-size:22px;display:block;margin:8px 0 10px}
.f-brand p{font-size:13.5px;color:#9dbdd8}
.f-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.f-group h5{color:#fff;margin-bottom:10px;font-size:14.5px}
.f-group p{margin:4px 0}
.f-group a{color:#9dbdd8;font-size:13.5px}
.f-group a:hover{color:#fff}
.f-bottom{border-top:1px solid rgba(255,255,255,.12)}
.f-bottom-in{display:flex;justify-content:space-between;padding:16px 24px;font-size:12.5px;color:#7fa5c4;flex-wrap:wrap;gap:6px;max-width:1200px;margin:0 auto}

/* reveal */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* responsive */
@media(max-width:1024px){
.hero-txt h1{font-size:32px}
.grid4{grid-template-columns:repeat(2,1fr)}
.grid3{grid-template-columns:repeat(2,1fr)}
.f-cols{grid-template-columns:repeat(2,1fr)}
.flow-steps{grid-template-columns:repeat(3,1fr)}
.two-col{grid-template-columns:1fr}
.side{position:static}
.pdp-main{grid-template-columns:1fr}
}
@media(max-width:768px){
.main-nav{display:none}
.menu-btn{display:block}
.mobile-menu.open{display:block;animation:fadeIn .2s}
.hero{height:460px}
.hero-in{flex-direction:column;align-items:flex-start}
.hero-art-wrap{display:none}
.grid2,.grid3,.grid4,.stats-in,.f-top,.coop-home{grid-template-columns:1fr}
.stat-band{grid-template-columns:repeat(2,1fr)}
.apps{grid-template-columns:1fr}
.hero-txt h1{font-size:28px}
.dropdown{display:none!important}
}