*{box-sizing:border-box;margin:0;padding:0}
:root{--brand:#2eafbb;--brand-dark:#13848e;--ink:#333;--muted:#eee;--paper:#fff}
html{scroll-behavior:smooth;background:var(--paper)}
body{font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;font-size:14px;color:var(--ink);background:var(--paper);line-height:1.6}
a{color:inherit;text-decoration:none;transition:color .25s,background-color .25s}
a:hover{color:var(--brand)}
img{display:block;max-width:100%}
button{font:inherit}
.container{width:min(1200px,calc(100% - 40px));margin-inline:auto}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.topbar{height:31px;background:var(--muted);border-bottom:1px solid #ccc}
.topbar-inner{height:30px;display:flex;align-items:center;justify-content:flex-end;gap:20px}
.contact-item{display:flex;align-items:center;gap:7px;line-height:1}
.contact-item img{width:18px;height:18px;object-fit:contain}
.site-header{height:110px;background:var(--paper)}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between}
.logo{display:block;width:360px;max-width:46%}
.logo img{width:100%;height:auto}
.main-nav{align-self:flex-start;display:flex;justify-content:flex-end;margin-top:20px}
.main-nav a{min-width:88px;height:52px;padding:0 12px;display:flex;align-items:center;justify-content:center;border-bottom:2px solid var(--paper);font-size:15px;line-height:52px;white-space:nowrap}
.main-nav a:last-child{min-width:168px}
.main-nav a:hover,.main-nav a.active{color:var(--paper);background:var(--brand)}
.menu-button{display:none;width:44px;height:42px;border:0;background:transparent;cursor:pointer}
.menu-button>span:not(.sr-only){display:block;width:25px;height:2px;margin:6px auto;background:var(--ink)}
.hero{position:relative;height:480px;overflow:hidden;background:var(--muted)}
.slides,.slide{position:absolute;inset:0}
.slide{opacity:0;background-position:center top;background-repeat:no-repeat;background-size:auto 480px;transition:opacity .7s ease}
.slide.active{opacity:1}
.slider-dots{position:absolute;z-index:2;left:50%;bottom:12px;display:flex;gap:10px;transform:translateX(-50%)}
.dot{width:18px;height:18px;border:0;background:transparent url('../images/dot.png') no-repeat center;cursor:pointer}
.dot.active{background-image:url('../images/dot-active.png')}
.section{padding:58px 0 70px}
.section-heading{text-align:center}
.section-heading h1,.section-heading h2{font-size:24px;font-weight:400;line-height:56px}
.title-line{height:22px;background:url('../images/title-line.png') no-repeat center top}
.section-heading p{min-height:48px;padding-top:9px;line-height:30px}
.science-heading{padding-bottom:25px;border-bottom:1px solid #d9d9d9}
.news-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 44px}
.news-item{display:grid;grid-template-columns:190px minmax(0,1fr);gap:22px;padding:28px 0;border-bottom:1px solid #e2e2e2}
.news-image{display:block;height:132px;overflow:hidden;background:var(--muted)}
.news-image img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.news-item:hover .news-image img{transform:scale(1.04)}
.news-content time{display:block;margin-bottom:8px;color:#888;font-size:14px}
.news-content h3{font-size:18px;font-weight:500;line-height:1.5}
.news-content h3 a:hover{color:var(--brand)}
.news-content p{display:-webkit-box;overflow:hidden;margin-top:8px;color:#666;line-height:1.7;-webkit-box-orient:vertical;-webkit-line-clamp:2}
.read-more{display:inline-block;margin-top:10px;color:var(--brand);font-size:14px}
.about-section{min-height:540px;background:var(--muted) url('../images/about-bg.jpg') no-repeat center top;background-size:auto 540px}
.about-grid{display:grid;grid-template-columns:minmax(0,850px) 220px;justify-content:space-between;gap:80px}
.section-heading.compact{padding-top:58px}
.section-heading.compact p{padding-top:9px}
.about-copy{margin-top:25px;line-height:30px;letter-spacing:1px}
.about-section address{margin-top:25px;font-style:normal;line-height:30px;letter-spacing:1px}
.about-section address strong{font-family:Verdana,Arial,sans-serif}
.product-heading{padding-bottom:25px;border-bottom:1px solid #d9d9d9}
.product-grid{display:grid;grid-template-columns:repeat(4,280px);justify-content:space-between;gap:15px 26px;padding-top:20px}
.product-card{display:block;height:255px;border:1px solid var(--muted);background:var(--paper);text-align:center}
.product-image{height:218px;display:flex;align-items:center;justify-content:center;overflow:hidden;background:var(--paper)}
.product-image img{width:100%;height:100%;object-fit:contain}
.product-name{height:35px;display:block;overflow:hidden;background:var(--muted);line-height:35px;white-space:nowrap;text-overflow:ellipsis}
.site-footer{min-height:110px;display:flex;align-items:center;background:var(--brand-dark);color:var(--paper);text-align:center}
.site-footer .container{padding:23px 0}
.site-footer p{line-height:30px}
.site-footer a{color:var(--paper)}
@media (max-width:1000px){
  .site-header{height:auto;min-height:90px}
  .header-inner{min-height:90px;flex-wrap:wrap}
  .logo{width:300px;max-width:75%}
  .menu-button{display:block}
  .main-nav{width:100%;min-width:0;max-height:0;overflow:hidden;flex-direction:column;margin:0;transition:max-height .3s ease}
  .main-nav.open{max-height:360px;padding-bottom:16px}
  .main-nav a{width:100%;height:48px;border-bottom:1px solid var(--muted)}
.news-list{grid-template-columns:1fr}
.news-item{grid-template-columns:220px minmax(0,1fr)}
.about-grid{grid-template-columns:1fr 300px;gap:40px}
  .product-grid{grid-template-columns:repeat(2,minmax(0,280px));justify-content:center}
}
@media (max-width:640px){
  .container{width:min(100% - 28px,1200px)}
  .topbar-inner{justify-content:center}
  .site-header,.header-inner{min-height:82px}
  .logo{width:260px}
  .hero{height:260px}
  .slide{background-size:auto 260px}
  .section{padding:38px 0 46px}
  .section-heading h1,.section-heading h2{line-height:48px}
  .section-heading p{padding:10px 16px 0}
.science-heading{padding-bottom:18px}
.news-item{grid-template-columns:112px minmax(0,1fr);gap:14px;padding:20px 0}
.news-image{height:92px}
.news-content time{margin-bottom:4px;font-size:14px}
.news-content h3{font-size:16px}
.news-content p{display:none}
.read-more{margin-top:7px}
  .about-section{background-size:auto 100%;padding-bottom:42px}
  .about-grid{grid-template-columns:1fr;gap:0}
  .section-heading.compact{padding-top:36px}
  .about-copy,.about-section address{margin-top:16px}
  .product-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 10px}
  .product-card{height:auto}
  .product-image{height:auto;aspect-ratio:1.2}
  .product-name{font-size:14px;padding:0 6px}
  .site-footer{font-size:14px}
}
@media (max-width:380px){
  .logo{width:230px}
  .topbar-inner{gap:10px}
  .hero{height:220px}
  .slide{background-size:auto 220px}
  .product-grid{grid-template-columns:1fr}
}
/* Inner pages */
.page-banner{padding:55px 0;background:var(--brand-dark);color:var(--paper);text-align:center}
.page-banner h1{font-size:30px;font-weight:400;line-height:1.4}
.page-banner p{margin-top:8px;color:rgba(255,255,255,.82);font-size:15px}
.breadcrumb{display:flex;align-items:center;gap:10px;min-height:54px;border-bottom:1px solid #e5e5e5;color:#777}
.breadcrumb a:hover{color:var(--brand)}
.inner-section{padding:48px 0 70px}
.filter-bar{display:flex;align-items:center;gap:28px;padding:16px 20px;background:#f3f3f3}
.filter-links{display:flex;flex-wrap:wrap;gap:8px}
.filter-button{padding:7px 17px;border:0;background:var(--paper);color:var(--ink);cursor:pointer}
.filter-button:hover,.filter-button.active{background:var(--brand);color:var(--paper)}
.listing-grid{padding-top:32px}
.product-card[hidden]{display:none}
.pagination{display:flex;justify-content:center;gap:8px;margin-top:35px}
.pagination a{min-width:38px;padding:7px 12px;border:1px solid #ddd;text-align:center}
.pagination a:hover,.pagination a.active{border-color:var(--brand);background:var(--brand);color:var(--paper)}
.product-detail{display:grid;grid-template-columns:minmax(0,520px) 1fr;gap:58px;align-items:center}
.detail-image{height:430px;display:flex;align-items:center;justify-content:center;border:1px solid #e5e5e5;background:var(--paper)}
.detail-image img{width:100%;height:100%;object-fit:contain}
.detail-summary h1{margin:12px 0 16px;font-size:28px;font-weight:500;line-height:1.45}
.detail-tag{display:inline-block;padding:5px 13px;background:var(--brand);color:var(--paper)}
.detail-intro{color:#666;line-height:1.9}
.detail-meta{margin-top:25px;border-top:1px solid #e5e5e5}
.detail-meta div{display:grid;grid-template-columns:90px 1fr;padding:12px 0;border-bottom:1px solid #e5e5e5}
.detail-meta dt{color:#777}.detail-meta dd{margin:0}
.consult-button,.submit-button{display:inline-block;margin-top:25px;padding:11px 30px;border:0;background:var(--brand);color:var(--paper);cursor:pointer}
.consult-button:hover,.submit-button:hover{background:var(--brand-dark);color:var(--paper)}
.detail-article{margin-top:55px}
.detail-article>h2{padding-bottom:13px;border-bottom:2px solid var(--brand);font-size:22px;font-weight:500}
.detail-table>div{display:grid;grid-template-columns:120px 1fr;padding:20px;border-bottom:1px solid #e5e5e5}
.medical-note{margin-top:24px;padding:17px 20px;background:#f3f3f3;color:#666}
.content-layout{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:52px}
.article-row{display:grid;grid-template-columns:240px minmax(0,1fr);gap:26px;padding:0 0 30px;margin-bottom:30px;border-bottom:1px solid #e5e5e5}
.article-thumb{height:158px;overflow:hidden}.article-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s}.article-row:hover img{transform:scale(1.04)}
.article-row time{color:#888}.article-row h2{margin:7px 0;font-size:20px;font-weight:500}.article-row p{color:#666;line-height:1.8}
.side-panel{align-self:start;border-top:2px solid var(--brand)}
.side-panel>h2{padding:18px 15px;background:#f3f3f3;font-size:19px;font-weight:500}
.side-panel>a{display:block;padding:13px 15px;border-bottom:1px solid #e5e5e5}.side-panel>a.active,.side-panel>a:hover{color:var(--brand)}
.side-contact{margin-top:28px;padding:22px;background:var(--brand-dark);color:var(--paper)}.side-contact strong{font-size:18px}.side-contact p{margin:8px 0}.side-contact a{color:var(--paper);font-size:20px}
.article-detail{max-width:900px}.article-detail>header{text-align:center}.article-detail>header h1{font-size:30px;font-weight:500}.article-meta{display:flex;justify-content:center;gap:28px;margin-top:13px;color:#888}
.article-cover{width:100%;max-height:460px;margin-top:32px;object-fit:cover}.article-body{padding-top:25px;font-size:16px;line-height:2}.article-body p{margin:13px 0}.article-body h2{margin-top:28px;font-size:21px;font-weight:500;color:var(--brand-dark)}.article-body blockquote{margin-top:26px;padding:18px 22px;border-left:4px solid var(--brand);background:#f3f3f3;color:#666}
.article-nav{display:flex;justify-content:space-between;margin-top:38px;padding-top:20px;border-top:1px solid #e5e5e5}
.about-page{display:grid;grid-template-columns:1fr 1fr;gap:58px;align-items:center}.about-visual{height:420px;overflow:hidden}.about-visual img{width:100%;height:100%;object-fit:cover}.eyebrow{color:var(--brand);font-family:Arial,sans-serif;letter-spacing:2px}.about-text h1,.contact-card h1{margin:8px 0 20px;font-size:28px;font-weight:500;line-height:1.5}.about-text p{margin-top:13px;color:#666;line-height:2}
.values-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:55px}.values-grid article{padding:28px;border-top:3px solid var(--brand);background:#f3f3f3}.values-grid span{color:var(--brand);font-size:25px}.values-grid h2{margin:8px 0;font-size:19px;font-weight:500}.values-grid p{color:#666}
.contact-layout{display:grid;grid-template-columns:380px 1fr;gap:65px}.contact-card>p{color:#666;line-height:1.8}.contact-card dl{margin-top:25px}.contact-card dl div{padding:14px 0;border-bottom:1px solid #e5e5e5}.contact-card dt{color:#888}.contact-card dd{margin:4px 0 0;font-size:16px}.contact-tip{margin-top:24px;padding:16px;background:#f3f3f3;color:#666}
.feedback-form{padding:35px;background:#f3f3f3}.feedback-form h2{font-size:24px;font-weight:500}.feedback-form>p{margin:6px 0 24px;color:#666}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.feedback-form label{display:block;margin-bottom:18px}.feedback-form label>span{display:block;margin-bottom:6px}.feedback-form input,.feedback-form select,.feedback-form textarea{width:100%;padding:11px 12px;border:1px solid #ccc;border-radius:0;background:var(--paper);font:inherit}.feedback-form textarea{resize:vertical}.feedback-form .consent{display:flex;align-items:flex-start;gap:9px}.feedback-form .consent input{width:auto;margin-top:5px}.feedback-form .consent span{margin:0;color:#666}.form-status{min-height:24px;margin-top:14px!important;color:var(--brand-dark)!important}
@media (max-width:1000px){.product-detail{grid-template-columns:1fr 1fr;gap:32px}.content-layout{grid-template-columns:1fr}.side-panel{display:none}.contact-layout{grid-template-columns:300px 1fr;gap:35px}}
@media (max-width:640px){.page-banner{padding:38px 0}.page-banner h1{font-size:25px}.inner-section{padding:32px 0 48px}.filter-bar{align-items:flex-start;flex-direction:column;gap:12px}.product-detail,.about-page,.contact-layout{grid-template-columns:1fr}.detail-image{height:310px}.detail-summary h1{font-size:23px}.detail-table>div{grid-template-columns:1fr;gap:7px}.article-row{grid-template-columns:112px 1fr;gap:14px}.article-thumb{height:92px}.article-row h2{font-size:16px}.article-row p{display:none}.article-detail>header h1{font-size:24px}.article-meta{flex-direction:column;gap:2px}.article-cover{margin-top:22px}.article-body{font-size:15px}.article-nav{align-items:flex-start;flex-direction:column;gap:12px}.about-visual{height:280px}.values-grid{grid-template-columns:1fr;margin-top:35px}.contact-layout{gap:35px}.form-grid{grid-template-columns:1fr}.feedback-form{padding:24px 18px}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.slide,.main-nav,a{transition:none}}