*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,Helvetica,sans-serif;color:#0b2233;background:#fff}a{color:inherit;text-decoration:none}header{height:76px;display:flex;align-items:center;justify-content:space-between;padding:0 5vw;border-bottom:1px solid #e4eaee;position:sticky;top:0;background:#fff;z-index:20}.brand{font-size:30px;font-weight:900;letter-spacing:1px}.brand:after{content:"";display:inline-block;width:34px;height:5px;background:#08aeb7;margin-left:7px}nav{display:flex;align-items:center;gap:28px;font-size:13px;font-weight:800}nav .quote,.primary{background:#08aeb7;color:white;padding:16px 20px}.menu{display:none}.hero{min-height:610px;background:linear-gradient(90deg,rgba(4,23,34,.88),rgba(4,23,34,.15)),url('assets/hydronex-hero.png') center/cover;display:flex;align-items:center;padding:7vw;color:white}.hero-copy{max-width:700px}.hero span,.intro>b,.section-title b,.band b,.service>b,.quote-sec b{color:#08c6d0;font-weight:900;letter-spacing:2px}.hero h1{font-size:72px;line-height:.95;margin:18px 0}.hero p{font-size:20px;line-height:1.6;max-width:620px}.hero a{display:inline-block;margin-top:15px;background:#08aeb7;padding:17px 24px;font-weight:800}.intro,main,.service,.detail{padding:70px 5vw}.intro h2,.section-title h2,.band h2,.service h2,.quote-sec h2,.contact h2{font-size:42px;margin:8px 0 30px}.cats{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.cat{border:1px solid #dfe7eb;padding:25px;border-top:4px solid #08aeb7}.cat h3{margin:0 0 10px}.cat p{color:#64747f;line-height:1.6}.section-title{display:flex;justify-content:space-between;align-items:end}.section-title input{width:320px;padding:14px;border:1px solid #cfd9df}.filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:30px}.filters button{padding:11px 15px;border:1px solid #d6e0e5;background:white;font-weight:700;cursor:pointer}.filters button.active{background:#0b2233;color:white}.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}.card{border:1px solid #e0e7eb;background:white}.pic{display:block;height:250px;background:#f3f5f6;overflow:hidden}.pic img{width:100%;height:100%;object-fit:contain;transition:.3s}.card:hover .pic img{transform:scale(1.04)}.cb{padding:20px}.cb small,.product-hero small{color:#08aeb7;font-weight:800}.cb h3{font-size:20px;margin:8px 0}.cb h3 em{display:block;font-style:normal;font-size:14px;font-weight:500;color:#667782;margin-top:5px}.specs{display:grid;grid-template-columns:repeat(3,1fr);gap:5px;border-top:1px solid #e6ecef;padding-top:14px;margin:14px 0}.specs span{font-size:10px;color:#71808a}.specs b{display:block;color:#0b2233;font-size:12px;margin-top:4px}.more{font-size:12px;font-weight:900}.band{background:#071f2c;color:white;display:grid;grid-template-columns:1fr 1fr;align-items:center;padding:60px 7vw;gap:40px}.band img{width:100%;max-height:440px;object-fit:contain}.band p,.service p{line-height:1.7}.service>div{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.service article{border:1px solid #dce5e9;padding:28px}.service strong{font-size:38px;color:#08aeb7}.quote-sec{background:#edf3f5;padding:70px 7vw;display:grid;grid-template-columns:1fr 1fr;gap:60px}.quote-sec form{display:grid;grid-template-columns:1fr 1fr;gap:12px}.quote-sec input,.quote-sec textarea{padding:15px;border:1px solid #cdd8dd;background:white}.quote-sec textarea{grid-column:1/-1;min-height:110px}.quote-sec button{grid-column:1/-1;padding:16px;background:#08aeb7;color:white;border:0;font-weight:900}.contact{text-align:center;padding:55px}.contact p{font-size:20px}footer{background:#061722;color:#d4e0e5;padding:45px 6vw;display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px}footer b{color:white}.crumb{padding:25px 6vw;color:#6d7b84;font-size:13px}.product-hero{display:grid;grid-template-columns:1.1fr 1fr;gap:60px;align-items:center;padding:40px 7vw 70px}.product-image{background:#f2f5f6;padding:30px}.product-image img{width:100%;height:500px;object-fit:contain}.product-hero h1{font-size:60px;margin:8px 0}.product-hero h2{font-size:27px;margin:0 0 18px}.product-hero p{line-height:1.7;color:#526570;margin-bottom:30px}.detail{max-width:1180px;margin:auto}.detail>h2{font-size:34px;border-left:5px solid #08aeb7;padding-left:15px;margin-top:60px}.display{display:grid;grid-template-columns:1fr 1fr;gap:18px}.display img{width:100%;height:420px;object-fit:contain;background:#f3f5f6}table{border-collapse:collapse;width:100%;font-size:15px}th,td{padding:16px;border:1px solid #dce5e9;text-align:left}th{width:45%;background:#f2f6f7}.features{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.features article{background:#f2f6f7;padding:25px}.features b{color:#08aeb7;font-size:30px}@media(max-width:900px){nav{display:none;position:absolute;top:76px;left:0;right:0;background:white;padding:20px;flex-direction:column}nav.open{display:flex}.menu{display:block}.hero h1{font-size:48px}.grid{grid-template-columns:repeat(2,1fr)}.cats,.service>div{grid-template-columns:1fr 1fr}.band,.quote-sec,.product-hero{grid-template-columns:1fr}.product-image img{height:360px}.section-title{align-items:start;flex-direction:column}.section-title input{width:100%;margin-bottom:20px}}@media(max-width:560px){.grid,.cats,.service>div,.display{grid-template-columns:1fr}.hero{min-height:520px}.hero h1{font-size:40px}.pic{height:280px}.quote-sec form{grid-template-columns:1fr}.quote-sec input,.quote-sec textarea,.quote-sec button{grid-column:1}.product-hero h1{font-size:46px}footer{grid-template-columns:1fr}}/* Entire product card is interactive */
.card{cursor:pointer;position:relative}
.card:focus-within{outline:3px solid #11b8bf;outline-offset:2px}
.card:hover{transform:translateY(-3px)}

/* Hengwang-inspired catalog navigation rebuild */
.navdrop{position:relative}.mega{display:none;position:absolute;top:28px;left:-20px;background:#fff;border-top:3px solid #08aeb7;box-shadow:0 12px 28px rgba(0,0,0,.14);min-width:230px;padding:12px;z-index:50}.mega a{display:block;padding:10px 12px;font-size:12px}.mega.wide{min-width:330px}.navdrop:hover .mega{display:block}.cat{display:block;color:inherit;transition:.2s}.cat span{font-size:10px;letter-spacing:1.5px;color:#08aeb7;font-weight:800}.cat strong{font-size:11px}.cat:hover{border-color:#08aeb7;transform:translateY(-2px)}.card[data-href]{transition:transform .2s,box-shadow .2s}.card[data-href]:hover{box-shadow:0 12px 30px rgba(10,35,50,.10)}@media(max-width:900px){.navdrop{width:100%;text-align:center}.mega,.mega.wide{position:static;display:block;box-shadow:none;border:0;min-width:0;padding:4px}.mega a{padding:7px}}
.spec-note{margin:.75rem 0 2rem;color:#667085;font-size:.9rem;line-height:1.55}

/* Product-detail trust and conversion elements */
.trustline{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 22px}.trustline span{border:1px solid #d7e4e8;background:#f6fafb;padding:8px 11px;font-size:11px;font-weight:800;letter-spacing:.4px}.parameter-cta{margin:14px 0 34px}.parameter-cta a{display:inline-block;background:#0b2233;color:#fff;padding:13px 18px;font-size:12px;font-weight:900;letter-spacing:.4px}.parameter-cta a:hover{background:#08aeb7}

/* Mobile production polish — 2026-09-24 */
.hero{background-image:linear-gradient(90deg,rgba(4,23,34,.90),rgba(4,23,34,.18)),url('assets/hydronex-excavator-black.png');background-position:center center}
.menu{border:0;border-radius:999px;background:#eef2f3;color:#087f88;font-size:20px;line-height:1;padding:10px 14px;cursor:pointer}
@media(max-width:900px){
 header{height:68px;padding:0 22px}
 .brand{font-size:26px;letter-spacing:.5px}
 .brand:after{width:26px;height:4px;margin-left:6px}
 nav{top:68px;max-height:calc(100vh - 68px);overflow:auto;border-top:1px solid #e4eaee;box-shadow:0 14px 30px rgba(5,28,40,.12);gap:0;align-items:stretch;text-align:left;padding:10px 22px 20px}
 nav>a,.navdrop>a{display:block;padding:13px 4px;border-bottom:1px solid #edf1f3}
 nav .quote{margin-top:10px;text-align:center;border:0}
 .navdrop{text-align:left}
 .mega,.mega.wide{display:none!important}
 .hero{min-height:500px;padding:62px 24px 52px;background-position:58% center;align-items:flex-end}
 .hero-copy{max-width:520px}
 .hero h1{font-size:48px;line-height:.98;margin:12px 0 14px;letter-spacing:-1px}
 .hero p{font-size:17px;line-height:1.45;margin:0 0 16px;max-width:480px}
 .hero a{margin-top:4px;padding:15px 20px}
 .intro,main,.service,.detail{padding:48px 22px}
 .intro h2,.section-title h2,.band h2,.service h2,.quote-sec h2,.contact h2{font-size:34px;margin-bottom:22px}
}
@media(max-width:560px){
 header{height:64px;padding:0 18px}
 .brand{font-size:24px}
 .brand:after{width:22px}
 nav{top:64px;max-height:calc(100vh - 64px);padding-left:18px;padding-right:18px}
 .hero{min-height:430px;padding:44px 20px 38px;background-position:61% center}
 .hero-copy span{font-size:12px;letter-spacing:1.6px}
 .hero h1{font-size:39px;line-height:.98;margin:10px 0 13px}
 .hero p{font-size:16px;line-height:1.42}
 .hero a{font-size:14px;padding:14px 18px}
 .intro,main,.service,.detail{padding:42px 18px}
 .intro h2,.section-title h2,.band h2,.service h2,.quote-sec h2,.contact h2{font-size:30px}
 .pic{height:235px}
 .filters{overflow-x:auto;flex-wrap:nowrap;padding-bottom:6px;-webkit-overflow-scrolling:touch}
 .filters button{white-space:nowrap}
 .quote-sec{padding:48px 18px;gap:28px}
 .contact{padding:42px 18px}
 .product-hero{padding:26px 18px 45px;gap:26px}
 .product-image{padding:16px}
 .product-image img{height:300px}
 .product-hero h1{font-size:40px}
}
/* HYDRONEX unified product-card typography */
.card .cb small{display:block;color:#08aeb7;font-size:15px;font-weight:800;line-height:1.25;margin-bottom:10px}
.card .cb h3{font-size:30px;line-height:1.05;font-weight:900;letter-spacing:-.4px;margin:0 0 12px;color:#0b2233}
.card .cb h3 em{display:block;font-size:17px;line-height:1.35;font-weight:500;color:#667782;margin-top:10px;letter-spacing:0}
.card .specs{margin-top:18px;padding-top:17px}
.card .specs span{font-size:11px;line-height:1.25}
.card .specs b{font-size:14px;line-height:1.25}
.card .more{display:inline-block;margin-top:6px;font-size:14px;font-weight:900}
@media(max-width:560px){.card .cb{padding:22px}.card .cb small{font-size:15px}.card .cb h3{font-size:31px}.card .cb h3 em{font-size:18px}.card .specs span{font-size:12px}.card .specs b{font-size:15px}.card .more{font-size:15px}}

.attachment-showcase{max-width:1200px;margin:20px auto 70px;padding:42px 36px;border-top:4px solid #13b7bd;background:#f7fafb}.attachment-showcase> b{color:#13b7bd;letter-spacing:.16em}.attachment-showcase h2{font-size:clamp(28px,4vw,48px);margin:10px 0 28px}.attachment-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:20px 0 28px}.attachment-grid article{border:1px solid #dbe4e8;background:#fff;padding:22px;min-height:130px}.attachment-grid article b{display:block;color:#0a2535;font-size:20px;margin-bottom:10px}.attachment-grid article p{margin:0;color:#657985;line-height:1.55}@media(max-width:760px){.attachment-grid{grid-template-columns:1fr 1fr}.attachment-showcase{margin:10px 20px 45px;padding:28px 20px}}@media(max-width:460px){.attachment-grid{grid-template-columns:1fr}}
.attachment-grid article img{width:100%;aspect-ratio:4/3;object-fit:contain;background:#f7f9fa;margin:0 0 14px;display:block}.visual-attachments{margin-top:24px}.visual-attachments article{background:#fff;border:1px solid #dfe7ea;padding:14px}.visual-attachments article b{display:block;font-size:18px;color:#000}