:root{--ink:#14202a;--muted:#60717b;--teal:#16b89f;--teal-dark:#078c7a;--soft:#f1f7f6;--line:#dce7e5;--white:#fff}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:Arial,"Microsoft YaHei",sans-serif;background:#fff;line-height:1.6}a{color:inherit;text-decoration:none}.container{width:min(1180px,calc(100% - 40px));margin:auto}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line)}.nav-wrap{min-height:72px;display:flex;align-items:center;justify-content:space-between}.brand{font-weight:800;letter-spacing:2px;font-size:20px}.nav-links{display:flex;gap:28px;font-size:13px;font-weight:700}.nav-links a:hover{color:var(--teal-dark)}.menu-toggle{display:none;background:none;border:0;font-size:26px}.hero{background:linear-gradient(115deg,#0d3340,#137b75);color:#fff;padding:92px 0 100px}.hero-inner{max-width:820px;margin-left:max(20px,calc((100vw - 1180px)/2))}.eyebrow{font-size:12px;letter-spacing:2px;font-weight:800;color:var(--teal-dark);margin:0 0 12px}.hero .eyebrow{color:#7df1dc}.hero h1{font-size:clamp(2.2rem,5vw,4.4rem);line-height:1.08;margin:0 0 24px}.hero-copy{font-size:19px;max-width:660px;color:#e4f4f1}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}.button{display:inline-block;border:0;border-radius:5px;background:var(--teal);color:#fff;padding:13px 22px;font-weight:800;cursor:pointer}.button:hover{background:var(--teal-dark)}.button-light{background:#fff;color:#14766e}.section{padding:78px 0}.soft{background:var(--soft)}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}.section h2{font-size:clamp(1.8rem,3vw,2.8rem);line-height:1.15;margin:0 0 18px}.section p{color:var(--muted)}.feature-list{display:grid;gap:14px}.feature-list div{border-left:4px solid var(--teal);padding:15px 18px;background:#f7fbfa}.feature-list b,.feature-list span{display:block}.feature-list span{color:var(--muted);font-size:14px}.trend-section{background:#fff}.section-intro{max-width:800px}.product-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-top:34px}.product-card{border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff;display:flex;flex-direction:column;min-width:0}.product-image{width:100%;aspect-ratio:1/1;object-fit:cover;background:#f3f6f5;display:flex;align-items:center;justify-content:center;text-align:center;color:#71837f;font-size:13px;padding:20px}.product-image img{width:100%;height:100%;object-fit:cover}.product-body{padding:17px;display:flex;flex-direction:column;flex:1}.product-body h3{font-size:16px;line-height:1.35;margin:0 0 9px}.sku{color:var(--teal-dark);font-weight:800;font-size:13px;margin-bottom:10px}.spec-list{list-style:none;padding:0;margin:0 0 10px;color:var(--muted);font-size:12px;line-height:1.55}.spec-list li{margin:2px 0}.spec-list b{color:var(--ink)}.verification-note{font-size:11px;color:#8b5c00;background:#fff7e6;border-left:3px solid #e7ae36;padding:7px;margin:0 0 12px}.card-link{margin-top:auto;color:var(--teal-dark);font-weight:800;font-size:13px}.steps{display:grid;gap:12px}.steps div{display:flex;align-items:center;gap:16px;border-bottom:1px solid var(--line);padding:14px 0}.steps strong{color:var(--teal);font-size:24px}.rfq{background:#0d3340;color:#fff}.rfq-box{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px;align-items:start}.rfq form{display:grid;gap:14px}.rfq label{font-size:13px;font-weight:700}.rfq input,.rfq textarea{display:block;width:100%;margin-top:5px;padding:12px;border-radius:4px;border:1px solid #bfd1d0;font:inherit}.footer{background:#071d25;color:#d9efec;padding:25px 0}.footer .container{display:flex;gap:24px;align-items:center;flex-wrap:wrap;font-size:13px}.footer a{color:#7df1dc}@media(max-width:900px){.product-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media(max-width:680px){.container{width:min(100% - 28px,560px)}.nav-links{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;padding:18px 14px;border-bottom:1px solid var(--line);flex-direction:column;gap:14px}.nav-links.open{display:flex}.menu-toggle{display:block}.hero{padding:64px 0 72px}.hero-inner{margin:auto}.hero-copy{font-size:16px}.two-col,.rfq-box{grid-template-columns:1fr;gap:30px}.section{padding:55px 0}.product-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.product-body{padding:12px}.product-body h3{font-size:14px}.product-image{aspect-ratio:1/1}.button{width:100%;text-align:center}}@media(max-width:390px){.product-grid{grid-template-columns:1fr}}