:root{--brand:#0AA5A5;--brand-600:#087A7A;--brand-700:#123B42;--brand-050:#EEF9F8;--accent:#90C641;--accent-600:#597F1E;--focus-ring:#087A7A;--signal:#496F27;--signal-050:#F3F8E9;--ink:#1D2B2E;--ink-2:#36494D;--muted:#5B6D70;--line:#D8E5E4;--line-2:#B9CFCC;--bg:#ffffff;--bg-alt:#F6F8F7;--bg-dark:#123B42;--radius-sm:8px;--radius:12px;--radius-lg:18px;--shadow-sm:0 1px 2px rgba(18,59,66,.06), 0 1px 3px rgba(18,59,66,.08);--shadow:0 10px 30px rgba(18,59,66,.10);--shadow-lg:0 20px 48px rgba(18,59,66,.16);--maxw:1200px;--nav-maxw:1440px;--content-w:900px;--header-h:72px}*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{font-family:segoe ui,Arial,helvetica neue,pingfang sc,microsoft yahei,sans-serif;font-size:18px;line-height:1.8;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}a{color:var(--brand-600);text-decoration:none;transition:color .2s ease}a:hover{color:var(--brand-700)}img{max-width:100%;height:auto;display:block}:focus-visible{outline:3px solid var(--focus-ring);outline-offset:3px;border-radius:4px;box-shadow:0 0 0 6px #fff}section[id],[id]{scroll-margin-top:calc(var(--header-h) + 16px)}.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}h1,h2,h3,h4{color:var(--ink);font-weight:700;line-height:1.2;letter-spacing:-.01em}h1{font-size:clamp(2.1rem,1.2rem + 3.6vw,3.4rem)}h2{font-size:clamp(1.6rem,1.1rem + 2.2vw,2.15rem)}h3{font-size:clamp(1.25rem,1rem + 1vw,1.5rem)}h4{font-size:1.125rem}p{margin:0 0 1.1rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 30px;border-radius:var(--radius-sm);font-weight:600;font-size:1rem;cursor:pointer;border:2px solid transparent;transition:all .22s 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small{display:block;font-size:.68rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}.nav-menu{display:flex;list-style:none;gap:4px;margin-left:auto;align-items:center}.nav-item{position:relative}.nav-item>a,.nav-item-has-children>a{display:inline-flex;align-items:center;gap:6px;padding:10px 9px;border-radius:8px;color:var(--ink-2);font-weight:600;font-size:.88rem}.nav-item>a:hover,.nav-item-has-children>a:hover{background:var(--brand-050);color:var(--brand-600)}.nav-item>a::after{content:"";display:block;height:2px;width:0;margin-top:2px;background:var(--brand);transition:width .2s ease}.nav-item:hover>a::after{width:18px}.nav-submenu{display:block;position:absolute;top:calc(100% + 6px);left:0;min-width:220px;padding:8px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);opacity:0;visibility:hidden;transform:translateY(6px);transition:all .18s ease;z-index:50}.nav-item:hover 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clamp(40px,5vw,72px)}.hero-container{max-width:var(--maxw)}.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.8rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--brand-700);background:var(--brand-050);padding:6px 14px;border-radius:999px;margin-bottom:18px}.hero-title{font-size:clamp(2.2rem,1.2rem + 3.8vw,3.5rem);max-width:18ch;margin-bottom:18px}.hero-description{font-size:clamp(1.05rem,1rem + .4vw,1.3rem);color:var(--muted);max-width:60ch;margin:0 auto 28px}.hero-cta{display:flex;gap:14px;flex-wrap:wrap}.section-hero .hero-description{margin-left:0;margin-right:0}.section-hero .hero-cta{justify-content:flex-start}.hero-media{margin-top:36px;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg)}.hero-media img{width:100%;object-fit:cover}.breadcrumb{margin-bottom:18px;font-size:.85rem;color:var(--muted)}.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:6px}.breadcrumb li{display:inline-flex;align-items:center;gap:6px}.breadcrumb a{color:var(--muted)}.breadcrumb a:hover{color:var(--brand-600)}.breadcrumb .sep{color:var(--line-2)}.breadcrumb [aria-current=page]{color:var(--ink-2);font-weight:600}.landing-page>.section:nth-child(even){background:var(--bg-alt)}.section{padding:clamp(56px,7vw,96px)0}.section-title{text-align:center;margin-bottom:10px}.section-lead,.section-description{text-align:center;color:var(--muted);max-width:64ch;margin:0 auto 44px;font-size:1.1rem}.section-kicker{margin:0 0 10px;color:var(--signal);text-align:center;font-size:1rem;font-weight:800;letter-spacing:.13em;text-transform:uppercase}.section-action{display:flex;justify-content:center;margin-top:34px}.text-link{display:inline-flex;gap:8px;align-items:center;font-weight:700}.text-link span{color:var(--accent-600);transition:transform .2s ease}.text-link:hover span{transform:translateX(3px)}.factor-grid,.application-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.factor-card,.application-card,.solution-card,.preview-card{min-width:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm)}.factor-card{border-top:3px solid var(--accent)}.factor-number,.system-index{display:inline-block;margin-bottom:18px;color:var(--accent-600);font-size:.78rem;font-weight:800;letter-spacing:.12em}.factor-card h3,.application-card h3,.solution-card h3,.preview-card h3{margin-bottom:10px}.factor-card p,.application-card p,.solution-card p,.preview-card p{color:var(--muted);font-size:1rem;margin:0}.application-card{position:relative;padding-top:68px;overflow:hidden}.application-mark{position:absolute;top:22px;left:26px;display:inline-grid;place-items:center;min-width:34px;height:30px;padding:0 8px;border-radius:7px;background:var(--brand-050);color:var(--brand);font-size:.72rem;font-weight:800}.section-split-heading{display:grid;grid-template-columns:minmax(0,.9fr)minmax(320px,1.1fr);align-items:end;gap:48px;margin-bottom:44px}.section-split-heading .section-kicker,.section-split-heading .section-title,.section-split-heading .section-description{text-align:left}.section-split-heading .section-description{margin:0}.system-map{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;list-style:none;padding:0;margin:0}.system-node{position:relative;padding:26px 26px 26px 28px;border:1px solid var(--line);background:#fff}.system-node:first-child{border-radius:var(--radius)0 0 var(--radius)}.system-node:last-child{border-radius:0 var(--radius)var(--radius)0}.system-node+.system-node{border-left:0}.system-node:not(:last-child)::after{content:"";position:absolute;z-index:2;top:50%;right:-7px;width:12px;height:12px;border-top:2px solid var(--accent);border-right:2px solid var(--accent);background:#fff;transform:translateY(-50%)rotate(45deg)}.system-node h3{font-size:1.08rem;margin-bottom:9px}.system-node p{color:var(--muted);font-size:1rem;margin:0}.engineering-boundary{display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:start;max-width:980px;margin:30px auto 0;padding:20px 22px;border-radius:var(--radius);border:1px solid rgba(144,198,65,.32);background:var(--signal-050)}.engineering-boundary strong{color:var(--signal);white-space:nowrap}.engineering-boundary p{color:var(--ink-2);margin:0;font-size:1rem}.solution-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.solution-card{border-top:3px solid var(--brand)}.solution-card-accent{border-top-color:var(--signal)}.solution-label,.preview-type{color:var(--signal)!important;font-size:1rem!important;font-weight:800;letter-spacing:.1em;text-transform:uppercase;margin-bottom:13px!important}.preview-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.preview-card{display:flex;flex-direction:column;align-items:flex-start}.preview-card h3 a{color:var(--ink)}.preview-card h3 a:hover{color:var(--brand-600)}.preview-card>p:not(.preview-type){margin-bottom:18px}.preview-card .text-link{margin-top:auto}.prose h2,.article-content h2{margin:56px 0 18px;padding-top:36px;border-top:1px solid var(--line);scroll-margin-top:calc(var(--header-h) + 16px)}.prose h2:first-of-type,.article-content h2:first-of-type{border-top:none;padding-top:8px;margin-top:8px}.prose h3,.article-content h3{margin:32px 0 12px}.prose h2+p,.article-content h2+p{margin-top:0}.article{padding:0 0 clamp(40px,5vw,64px)}.article-body{max-width:var(--content-w);margin:0 auto;padding:0 24px}.prose{color:var(--ink-2);font-size:1.0625rem;line-height:1.85}.prose p{margin:0 0 1.15rem}.prose ul,.prose ol{margin:0 0 1.2rem 1.3rem}.prose li{margin:0 0 .5rem}.prose li::marker{color:var(--brand)}.prose strong{color:var(--ink);font-weight:700}.prose a{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}.prose blockquote{border-left:4px solid var(--brand);padding:6px 0 6px 22px;margin:1.4rem 0;color:var(--muted);font-style:italic;background:var(--bg-alt);border-radius:0 8px 8px 0}.article-footer{max-width:var(--content-w);margin:40px auto 0;padding:24px;border-top:1px solid var(--line)}.article-tags{display:flex;flex-wrap:wrap;gap:8px}.tag{background:var(--bg-alt);color:var(--ink-2);padding:5px 14px;border-radius:999px;font-size:.8rem;font-weight:500;border:1px solid var(--line)}.img-figure{margin:32px auto;max-width:100%;text-align:center}.img-figure img{width:100%;max-width:980px;margin:0 auto;border-radius:var(--radius);box-shadow:var(--shadow);background:var(--bg-alt)}.img-figure figcaption{margin-top:12px;font-size:.88rem;color:var(--muted);border-top:1px solid var(--line);padding-top:10px;display:inline-block}.table-wrap{overflow-x:auto;margin:28px 0;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm)}.table-wrap table{width:100%;border-collapse:collapse;font-size:.95rem;background:#fff}.table-wrap table th,.table-wrap table td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line)}.table-wrap table thead th{background:var(--brand-700);color:#fff;font-weight:700;letter-spacing:.01em;position:sticky;top:0}.table-wrap table thead th:first-child{border-top-left-radius:var(--radius)}.table-wrap table thead th:last-child{border-top-right-radius:var(--radius)}.table-wrap table tbody tr{transition:background .15s ease}.table-wrap table tbody tr:nth-child(even){background:var(--bg-alt)}.table-wrap table tbody tr:hover{background:var(--brand-050)}.table-wrap table tbody td{color:var(--ink-2)}.table-wrap table tbody tr:last-child td{border-bottom:none}.faq-accordion{max-width:880px;margin:0 auto;display:grid;gap:14px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:border-color .2s ease,box-shadow .2s ease}.faq-item:hover{border-color:var(--line-2)}.faq-open{border-color:var(--brand);box-shadow:var(--shadow)}.faq-question{width:100%;padding:20px 22px;background:0 0;border:none;text-align:left;font-size:1.05rem;font-weight:600;color:var(--ink);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px}.faq-icon{flex:none;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:var(--brand-050);color:var(--brand-600);font-size:1.3rem;line-height:1;transition:transform .3s ease,background .2s ease}.faq-open .faq-icon{transform:rotate(45deg);background:var(--brand-600);color:#fff}.faq-answer{max-height:0;overflow:hidden;transition:max-height .35s ease}.faq-open .faq-answer{max-height:1200px}.faq-answer p{padding:0 22px 22px;color:var(--muted);margin:0}.faq-placeholder{text-align:center;color:var(--muted)}.faq-shortcode{margin:28px auto}.rfq-form{max-width:720px;margin:0 auto}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}.form-group{margin-bottom:18px}.form-group label{display:block;margin-bottom:6px;font-weight:600;font-size:.9rem;color:var(--ink-2)}.form-group input,.form-group textarea,.form-group select{width:100%;padding:12px 14px;border:1px solid var(--line-2);border-radius:var(--radius-sm);font-size:1rem;font-family:inherit;color:var(--ink);background:#fff;transition:border-color .2s,box-shadow .2s}.form-group input:focus,.form-group textarea:focus,.form-group select:focus{border-color:var(--brand);outline:none;box-shadow:0 0 0 3px var(--brand-050)}.btn-submit{width:100%;margin-top:6px}.rfq-fallback{max-width:720px;margin:0 auto;text-align:center;background:var(--bg-alt);border:1px dashed var(--line-2);border-radius:var(--radius);padding:36px 28px}.rfq-fallback p{color:var(--ink-2);margin-bottom:18px;font-size:1.02rem}.rfq-fallback .btn-ghost,.contact-actions .btn-ghost{background:0 0;color:var(--brand-600);border-color:var(--brand-600)}.rfq-fallback .btn-ghost:hover,.contact-actions .btn-ghost:hover{background:var(--brand-700);color:#fff;border-color:var(--brand-700)}.cta-band{background:var(--bg-dark);color:#fff;padding:clamp(48px,6vw,72px)0;position:relative;overflow:hidden}.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(700px 300px at 90% 0%,rgba(10,165,165,.34),transparent 60%),radial-gradient(600px 300px at 0% 100%,rgba(144,198,65,.22),transparent 55%)}.cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}.cta-title{color:#fff;font-size:clamp(1.6rem,1.2rem + 1.6vw,2.2rem);margin-bottom:10px}.cta-sub{color:rgba(255,255,255,.78);margin:0;max-width:56ch;font-size:1.05rem}.cta-action{flex:none}.capabilities-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:22px}.capability-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;text-align:left;box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .2s,border-color .2s}.capability-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--line-2)}.capability-card h3{font-size:1.1rem;margin-bottom:8px;color:var(--brand-600)}.capability-card p{color:var(--muted);font-size:.95rem;margin:0}.equipment-list{margin-top:28px}.equipment-list ul{list-style:none;display:flex;flex-wrap:wrap;gap:10px;justify-content:center;padding:0;margin:0}.equipment-list li{background:var(--brand-050);color:var(--brand-600);padding:7px 16px;border-radius:999px;font-size:.85rem;font-weight:600}.process-flow{display:flex;align-items:stretch;justify-content:center;flex-wrap:wrap;gap:10px}.process-step{display:flex;flex-direction:column;align-items:center;gap:10px;flex:1 1 120px;max-width:160px}.step-number{width:48px;height:48px;border-radius:50%;background:var(--brand-600);color:#fff;display:grid;place-items:center;font-weight:800;box-shadow:var(--shadow-sm)}.step-name{font-size:.9rem;text-align:center;color:var(--ink-2);font-weight:500}.process-arrow{color:var(--line-2);font-size:1.6rem;align-self:center}.spec-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}.spec-item{display:flex;justify-content:space-between;gap:12px;padding:16px 18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}.spec-label{font-weight:600;color:var(--ink-2)}.spec-value{color:var(--brand-600);font-weight:600}.materials-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:22px}.material-card{border:1px solid var(--line);border-radius:var(--radius);padding:24px;background:#fff;box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .2s}.material-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.material-card h3{color:var(--brand-600);margin-bottom:12px}.material-grades{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}.grade-badge{background:var(--brand-050);color:var(--brand-600);padding:5px 12px;border-radius:999px;font-size:.82rem;font-weight:600}.alloy-info{font-size:.82rem;color:var(--muted)}.industries-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:22px}.industry-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .2s}.industry-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.industry-card h3{margin-bottom:8px;color:var(--brand-600)}.industry-applications{list-style:none;margin:12px 0 0;padding:0}.industry-applications li{padding:5px 0;font-size:.9rem;color:var(--muted);border-bottom:1px dashed var(--line)}.industry-applications li:last-child{border-bottom:none}.industry-applications li::before{content:"▸ ";color:var(--accent)}.certs-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:22px}.cert-card{border:1px solid var(--line);border-radius:var(--radius);padding:26px;text-align:center;background:#fff;box-shadow:var(--shadow-sm)}.cert-card h3{font-size:1.4rem;color:var(--brand-600);margin-bottom:8px}.cert-link{font-size:.88rem;font-weight:600}.section-content .prose,.section-content .article-content{max-width:var(--content-w);margin:0 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