:root{--ink:#294568;--ink2:#365f7b;--primary:#294568;--blue:#226eb3;--copper:#c07a45;--copper2:#dda273;--mint:#dceaf4;--paper:#f6f8fa;--white:#fff;--text:#29343d;--muted:#687782;--line:#dce4ea;--radius:6px;--shadow:0 22px 58px rgba(41,69,104,.12)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;padding-top:78px;color:var(--text);background:var(--paper);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.75}a{text-decoration:none;color:inherit}h1,h2,h3{letter-spacing:-.035em}#mainNav{height:78px;background:rgba(16,33,31,.96);border-bottom:1px solid rgba(255,255,255,.08);transition:.3s}#mainNav.scrolled{box-shadow:0 10px 32px rgba(0,0,0,.18)}.navbar-brand{display:flex;align-items:center;gap:12px;color:#fff}.navbar-brand:hover{color:#fff}.brand-mark{width:42px;height:42px;display:grid;place-items:center;border:1px solid var(--copper2);color:var(--copper2);font-family:Georgia,serif;font-weight:700}.brand-copy{display:flex;flex-direction:column;line-height:1.1}.brand-copy b{font-size:18px;letter-spacing:.08em}.brand-copy small{font-size:8px;letter-spacing:.2em;color:#aab8b5;margin-top:5px}.navbar-toggler{border-color:rgba(255,255,255,.2)}.navbar-toggler-icon{filter:invert(1)}#mainNav .nav-link{color:#d7dfdc;font-size:14px;padding:12px 15px}#mainNav .nav-link:hover,#mainNav .nav-link.active{color:var(--copper2)}.nav-cta,.btn-copper{display:inline-flex;justify-content:center;align-items:center;background:var(--copper);color:#fff;padding:12px 22px;border:1px solid var(--copper);font-weight:700;transition:.25s}.nav-cta:hover,.btn-copper:hover{background:var(--copper2);border-color:var(--copper2);color:var(--ink);transform:translateY(-2px)}.eyebrow{font-size:11px;letter-spacing:.23em;font-weight:800;color:var(--copper2)}.eyebrow.dark{color:#a85c29}.hero{position:relative;min-height:680px;padding:118px 0 88px;background:var(--ink);color:#fff;overflow:hidden}.hero:after{content:"";position:absolute;width:520px;height:520px;border:1px solid rgba(184,215,202,.16);border-radius:50%;right:-100px;top:80px;box-shadow:0 0 0 100px rgba(184,215,202,.025),0 0 0 200px rgba(184,215,202,.02)}.hero-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);background-size:80px 80px;mask-image:linear-gradient(to right,#000,transparent)}.hero .container{position:relative;z-index:2}.hero h1{font-size:clamp(48px,6.2vw,88px);line-height:1.05;font-weight:800;margin:24px 0}.hero h1 em{font-family:Georgia,"Songti SC",serif;font-weight:400;color:var(--mint)}.hero-intro{max-width:760px;font-size:18px;color:#c9d3d0}.hero-actions{display:flex;gap:16px;margin-top:36px}.btn-ghost{display:inline-flex;align-items:center;gap:14px;color:#fff;border-bottom:1px solid #647672;padding:12px 4px}.btn-ghost:hover{color:var(--copper2);border-color:var(--copper2)}.hero-proof{border-top:1px solid #58706a;padding-top:20px;position:relative;z-index:2}.hero-proof span{font-size:12px;color:var(--copper2)}.hero-proof strong{display:block;margin:8px 0;font-size:19px}.hero-proof p{font-size:13px;color:#9fb0ac}.trust-strip{background:#172b28;color:#fff;border-top:1px solid #314642}.trust-strip .container{min-height:78px;display:flex;align-items:center;gap:32px;flex-wrap:wrap}.trust-strip span{color:#859793;font-size:12px}.trust-strip b{font-size:13px;letter-spacing:.04em}.section-space{padding:110px 0}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:50px}.section-heading h2,.faq-section h2{font-size:clamp(34px,4vw,54px);font-weight:800;color:var(--ink);margin:10px 0 0}.section-heading>p{max-width:450px;color:var(--muted);margin:0}.direction-card{display:block;position:relative;min-height:490px;padding:34px;background:#fff;border:1px solid var(--line);overflow:hidden;transition:.35s}.direction-card:hover{transform:translateY(-8px);box-shadow:var(--shadow);color:inherit}.direction-card:after{content:"";position:absolute;left:0;bottom:0;width:100%;height:5px;background:var(--copper)}.direction-card.alloy:after{background:#628c80}.direction-card.clean:after{background:#486e88}.direction-card .num{font-size:12px;color:#88918f}.chem-symbol{width:86px;height:86px;display:grid;place-items:center;margin:46px 0 32px;border:1px solid #e2c7b0;color:var(--copper);font:42px Georgia,serif}.alloy .chem-symbol{color:#587e73;border-color:#bed4cd}.clean .chem-symbol{color:#486e88;border-color:#bfd0db}.direction-card h3{font-size:27px;color:var(--ink);font-weight:800}.direction-card p{color:var(--muted);font-size:14px}.direction-card ul{padding-left:18px;font-size:13px}.card-link{position:absolute;bottom:28px;font-weight:700;font-size:13px;color:var(--ink)}.process-section{padding:110px 0;background:var(--ink);color:#fff}.section-heading.light h2{color:#fff}.section-heading.light p{color:#a9b8b4}.process-flow{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid #405650}.process-flow>div{padding:34px 30px;border-right:1px solid #405650}.process-flow b{color:var(--copper2);font:26px Georgia,serif}.process-flow h3{font-size:20px;margin:35px 0 12px}.process-flow p{font-size:13px;color:#9fada9}.text-link{font-weight:700;color:#a85c29}.material-grid{display:grid;grid-template-columns:repeat(2,1fr);border-top:1px solid #c8ceca}.material-item{position:relative;padding:30px 50px 30px 0;border-bottom:1px solid #c8ceca;display:grid;grid-template-columns:50px 1fr 1.3fr;align-items:center;gap:22px;transition:.25s}.material-item:nth-child(odd){border-right:1px solid #c8ceca;margin-right:28px}.material-item:hover{padding-left:15px;color:var(--copper)}.material-item span{font:18px Georgia;color:#a85c29}.material-item h3{font-size:20px;color:var(--ink);margin:0}.material-item p{font-size:13px;color:var(--muted);margin:0}.material-item i{position:absolute;right:15px;font-style:normal}.faq-section{padding:100px 0;background:#e7e9e3}.faq-section p{color:var(--muted)}.accordion-item{background:transparent;border-color:#c6ccc7}.accordion-button{background:transparent!important;box-shadow:none!important;color:var(--ink)!important;font-weight:700;font-size:18px;padding:25px 0}.accordion-body{padding:0 40px 25px 0;color:var(--muted)}.final-cta{padding:120px 0;text-align:center;background:linear-gradient(115deg,#19332f,#10211f);color:#fff}.final-cta h2{font-size:clamp(36px,5vw,64px);font-weight:800;margin:18px 0}.final-cta p{color:#b8c5c1;margin-bottom:30px}.page-header{padding:88px 0 50px;background:var(--ink);color:#fff}.page-header h1{font-size:clamp(36px,5vw,58px)}.page-header p{color:#b2c0bc}.breadcrumb a{color:var(--copper2)}.breadcrumb-item.active{color:#aebbb8}.category-sidebar,.product-card,.article-card,.contact-info-card{background:#fff;border:1px solid var(--line)!important;border-radius:0!important;box-shadow:none!important}.category-sidebar .card-header{background:var(--ink);color:#fff}.category-sidebar .list-group-item.active{background:#d9e5df;color:var(--ink);border-color:#d9e5df}.product-card,.article-card{height:100%;transition:.3s}.product-card:hover,.article-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)!important}.product-img-wrap{height:220px;background:linear-gradient(135deg,#dfe5e0,#f4f1ea);overflow:hidden}.product-img-wrap img{width:100%;height:100%;object-fit:cover}.product-card .card-body,.article-card .card-body{padding:24px}.card-text{color:var(--muted);font-size:14px}.btn-primary{background:var(--ink);border-color:var(--ink);border-radius:0}.btn-primary:hover{background:var(--copper);border-color:var(--copper)}.btn-outline-primary{border-color:var(--ink);color:var(--ink);border-radius:0}.btn-outline-primary:hover{background:var(--ink);border-color:var(--ink)}.rich-content{font-size:16px;line-height:1.95}.rich-content h2,.rich-content h3{color:var(--ink);margin-top:32px}.rich-content img{max-width:100%;height:auto}.site-footer{padding:90px 0 0;background:#0b1715;color:#9ead9f}.footer-lead{display:flex;align-items:end;justify-content:space-between;padding-bottom:60px;border-bottom:1px solid #2b3a37}.footer-lead h2{color:#fff;font-size:38px;margin:12px 0 0}.footer-grid{padding:55px 0}.footer-grid h3{font-size:13px;letter-spacing:.08em;color:#fff;margin-bottom:18px}.footer-grid a,.footer-grid span{display:block;color:#9ead9f;font-size:13px;margin-bottom:9px}.footer-grid a:hover{color:var(--copper2)}.footer-grid p{max-width:390px;font-size:14px;margin-top:22px}.footer-bottom{border-top:1px solid #24322f;padding:22px 0;display:flex;justify-content:space-between;font-size:12px}.footer-bottom a{color:#9ead9f}.float-inquiry{position:fixed;right:20px;bottom:20px;z-index:1000;display:flex;gap:8px}.float-inquiry a{width:58px;height:58px;background:var(--copper);color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:11px;box-shadow:0 8px 24px rgba(0,0,0,.2)}.float-inquiry i{font-size:17px}.fade-up{opacity:0;transform:translateY(20px);transition:.55s}.fade-up.visible{opacity:1;transform:none}
@media(max-width:991px){body{padding-top:68px}#mainNav{height:68px}.navbar-collapse{background:var(--ink);padding:20px;margin:10px -12px}.hero{min-height:auto;padding:90px 0 70px}.hero-proof{margin-top:55px}.section-space,.process-section,.faq-section{padding:75px 0}.section-heading{display:block}.section-heading>p{margin-top:18px}.process-flow{grid-template-columns:repeat(2,1fr)}.material-grid{grid-template-columns:1fr}.material-item:nth-child(odd){border-right:0;margin-right:0}.footer-lead{display:block}.footer-lead .btn-copper{margin-top:25px}}
@media(max-width:576px){.hero h1{font-size:43px}.hero-actions{flex-direction:column;align-items:flex-start}.process-flow{grid-template-columns:1fr}.process-flow>div{border-right:0;border-bottom:1px solid #405650}.material-item{grid-template-columns:38px 1fr;padding-right:35px}.material-item p{grid-column:2}.section-heading h2,.faq-section h2{font-size:36px}.footer-bottom{flex-direction:column;gap:8px}.float-inquiry{right:12px;bottom:12px}.float-inquiry a{width:50px;height:50px}}
.solution-table{background:#fff;border:1px solid var(--line)}.solution-table th{background:var(--ink);color:#fff;padding:18px;white-space:nowrap}.solution-table td{padding:22px 18px;border-color:var(--line);vertical-align:top;min-width:180px}.solution-table td:first-child{color:var(--ink)}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}.fade-up{opacity:1;transform:none}}

/* 2026 blue-grey industrial technology palette */
#mainNav{background:rgba(41,69,104,.98);border-bottom-color:rgba(255,255,255,.14)}
.hero{background-image:linear-gradient(90deg,rgba(25,47,70,.82) 0%,rgba(31,57,82,.66) 42%,rgba(41,69,104,.18) 76%,rgba(41,69,104,.06) 100%),url("../images/hero-metal-finishing-v1.png");background-size:cover;background-position:center center;background-repeat:no-repeat}
.hero:after{display:none}.hero-grid{opacity:.16}
.hero-intro{color:#d8e5ee}.hero-proof{border-top-color:#7391a8}.hero-proof p{color:#bfd0dc}
.trust-strip{background:#eaf2f8;color:var(--ink);border-top-color:#d5e2ec}
.trust-strip span{color:#738696}.trust-strip b{color:#334b60}
.process-section{background:#315675}.process-flow{border-top-color:#7895ab}.process-flow>div{border-right-color:#7895ab}.process-flow p{color:#d7e3eb}
.faq-section{background:#eef3f7}
.final-cta{background:linear-gradient(135deg,#f4f7fa,#e7eff5);color:var(--ink);border-top:1px solid #d8e3ec}
.final-cta h2{color:var(--ink)}.final-cta p{color:var(--muted)}.final-cta .eyebrow{color:var(--blue)}
.page-header{background:linear-gradient(120deg,#315d82,#447da5)}
.site-footer{background:#294568;color:#d1dce5}.footer-lead{border-bottom-color:#536b87}.footer-grid a,.footer-grid span,.footer-bottom a{color:#d1dce5}.footer-bottom{border-top-color:#4d6580}
.nav-cta,.btn-copper,.float-inquiry a{background:var(--blue);border-color:var(--blue)}
.nav-cta:hover,.btn-copper:hover{background:#3181c8;border-color:#3181c8;color:#fff}
.btn-primary{background:var(--blue);border-color:var(--blue)}.btn-primary:hover{background:#185b98;border-color:#185b98}
.btn-outline-primary{border-color:var(--blue);color:var(--blue)}.btn-outline-primary:hover{background:var(--blue);border-color:var(--blue);color:#fff}
.category-sidebar .list-group-item.active{background:#e3eef7;color:var(--ink);border-color:#e3eef7}
.product-img-wrap{background:linear-gradient(135deg,#e4edf4,#f7f9fb)}

/* Contact and specification cards */
.contact-info-card{height:100%;min-height:190px;padding:28px 20px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;overflow-wrap:anywhere}
.contact-info-card .ci-icon{width:52px;height:52px;margin-left:auto;margin-right:auto;border-radius:50%;display:grid;place-items:center;background:#e8f1f8;color:var(--blue);font-size:22px}
.contact-info-card h3,.contact-info-card h5{width:100%;margin:0 0 10px;color:var(--ink);font-weight:700;text-align:center}
.contact-info-card p{width:100%;margin:0;color:var(--muted);text-align:center;line-height:1.65}
@media(max-width:576px){.contact-info-card{min-height:170px;padding:24px 18px}}

/* Backend-managed homepage carousel and stronger brand presence */
body{padding-top:92px}#mainNav{height:92px}
.brand-mark{width:54px;height:54px;font-size:20px}.brand-copy b{font-size:24px;letter-spacing:.11em;line-height:1}.brand-copy small{font-size:11px;letter-spacing:.22em;margin-top:8px;font-weight:600;color:#c6d4df}
.hero-carousel{padding:0;background:none}.hero-carousel .carousel-inner,.hero-carousel .carousel-item{min-height:680px}.hero-slide{position:relative;min-height:680px;padding:118px 0 88px;display:flex;align-items:center;overflow:hidden;color:#fff}
.hero-bg-image{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center}.hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(24,45,67,.88) 0%,rgba(31,57,82,.7) 43%,rgba(41,69,104,.2) 78%,rgba(41,69,104,.08) 100%)}
.hero-slide .container{position:relative;z-index:2}.hero-carousel .carousel-control-prev,.hero-carousel .carousel-control-next{width:6%;z-index:3}.hero-carousel .carousel-indicators{z-index:3;margin-bottom:24px}.hero-carousel .carousel-indicators button{width:34px;height:3px;border:0}
@media(max-width:991px){body{padding-top:78px}#mainNav{height:78px}.brand-mark{width:46px;height:46px;font-size:17px}.brand-copy b{font-size:20px}.brand-copy small{font-size:9px;margin-top:5px}.hero-carousel .carousel-inner,.hero-carousel .carousel-item,.hero-slide{min-height:620px}.hero-slide{padding:90px 0 70px}.hero-bg-image{object-position:62% center}.hero-overlay{background:linear-gradient(90deg,rgba(24,45,67,.92),rgba(31,57,82,.76) 70%,rgba(41,69,104,.48))}}