:root{--ink:#171b21;--muted:#606873;--line:#d9dde2;--paper:#f4f5f6;--accent:#f15a24;--gutter:clamp(24px,5.55vw,96px)}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:88px}body{margin:0;background:#fff;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;font-size:17px;line-height:1.85;-webkit-font-smoothing:antialiased}body:has(dialog[open]){overflow:hidden}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit;cursor:pointer}button,a{-webkit-tap-highlight-color:transparent}button{background:none;border:0}img{display:block;max-width:100%}svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.5;flex-shrink:0}h1,h2,h3,p,figure,dl,dd{margin:0}h1,h2,h3{font-weight:600;letter-spacing:-.035em}h1{font-size:clamp(44px,4.4vw,68px);line-height:1.25}h1 span{white-space:nowrap}h2{font-size:clamp(30px,3vw,46px);line-height:1.35}h3{font-size:24px;line-height:1.5}p{color:var(--muted)}p+p{margin-top:18px}.wrap{width:100%;max-width:1600px;margin:auto;padding-left:var(--gutter);padding-right:var(--gutter)}.skip-link{position:absolute;top:-100px;left:20px;background:var(--ink);color:white;z-index:20;padding:12px}.skip-link:focus{top:10px}:focus-visible{outline:2px solid var(--accent);outline-offset:5px}[hidden]{display:none!important}.site-header{border-bottom:1px solid var(--line)}.header-inner{height:88px;display:flex;align-items:center;justify-content:space-between;gap:32px}.brand img{width:238px;height:auto}.site-header nav{display:flex;align-items:center;gap:36px;font-size:15px;font-weight:500}.site-header nav a:hover{color:var(--accent)}.language{border-left:1px solid var(--line);padding-left:32px}.menu-toggle{display:none}.hero-grid{display:grid;grid-template-columns:43% 57%;align-items:center;min-height:620px;padding:34px 0 18px}.hero-copy{position:relative;z-index:1;padding:40px 0}.hero-copy p{max-width:475px;font-size:20px;line-height:1.8;margin-top:28px}.hero-media{margin-left:-3%;margin-right:-28px}.hero-media img{width:100%;height:auto;max-height:660px;object-fit:contain}.hero-actions{display:flex;gap:30px;align-items:center;margin-top:42px}.button{display:inline-flex;gap:22px;align-items:center;justify-content:center;padding:15px 26px;min-height:52px;background:var(--accent);color:white;font-size:16px;font-weight:500;border:1px solid var(--accent);line-height:1.4;transition:background .18s}.button:hover{background:#d9440f;border-color:#d9440f}.text-link{display:inline-flex;align-items:center;gap:14px;border-bottom:1px solid var(--accent);padding:10px 0;font-size:16px;font-weight:500}.text-link svg{color:var(--accent)}.text-link:hover{color:var(--accent)}.product-facts{border-top:1px solid #aab0b7;display:grid;grid-template-columns:repeat(3,1fr);padding:32px 0 36px}.product-facts>div{display:flex;flex-direction:column;align-items:center;justify-content:center;border-right:1px solid var(--line)}.product-facts>div:last-child{border:0}.product-facts dt{order:2;color:var(--muted);font-size:14px;margin-top:3px}.product-facts dd{font-size:28px;font-weight:600;line-height:1.4;letter-spacing:-.02em}.product-facts small{font-size:21px}.section-nav{position:sticky;top:0;z-index:10;background:#f4f5f6f5;border-top:1px solid #eee;border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.section-nav .wrap{display:flex;justify-content:space-between}.section-nav a{display:block;text-align:center;font-size:15px;padding:21px 20px 18px;flex:1;border-bottom:3px solid transparent;white-space:nowrap}.section-nav a[aria-current]{border-color:var(--accent);color:var(--accent)}.section-nav a:hover{color:var(--accent)}.section{padding:100px 0}.section-heading{margin-bottom:42px}.section-heading>p{font-size:20px;line-height:1.7;margin-top:18px}.engineering{background:var(--paper)}.engineering-grid{display:grid;grid-template-columns:minmax(0,1.9fr) minmax(0,1fr);gap:56px;align-items:start}.explorer{min-width:0}.explorer-stage{height:520px;display:flex;align-items:center;justify-content:center;background:#fff}.explorer-stage>img{width:100%;height:100%;object-fit:contain}.explorer-stage:has(iframe){height:540px}#model-mount{width:100%;height:100%}#model-mount iframe{width:100%;height:100%;border:0;display:block}.explorer-controls{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:22px}.view-switch{display:flex}.view-switch button{font-size:14px;padding:10px 17px;border:1px solid #c9ced4}.view-switch button+button{border-left:0}.view-switch button[aria-pressed=true]{background:var(--accent);color:#fff;border-color:var(--accent)}.outline{background:transparent;color:var(--accent);padding:11px 16px;min-height:44px;font-size:14px}.outline:hover{color:#fff}.explorer-links{display:flex;flex-wrap:wrap;gap:16px 26px;margin-top:18px}.quiet-link{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--muted)}.quiet-link svg{width:17px;height:17px}.quiet-link:hover{color:var(--accent)}.caption{font-size:13px;line-height:1.8;color:var(--muted);margin-top:18px}.design-reasons{list-style:none;padding:0;margin:10px 0 0}.design-reasons li{display:grid;grid-template-columns:52px 1fr;gap:20px;padding:26px 0 30px;border-bottom:1px solid #ccd1d6}.design-reasons li:first-child{padding-top:0}.design-reasons li:last-child{border-bottom:0}.reason-num{font-size:38px;line-height:1.3;color:var(--accent);font-variant-numeric:tabular-nums;font-weight:500}.design-reasons p{font-size:16px;line-height:1.9;margin-top:12px}.engineering>.wrap>.disclosure{margin-top:36px}.disclosure{border-top:1px solid var(--line)}.disclosure:last-child{border-bottom:1px solid var(--line)}.disclosure summary{display:flex;align-items:center;justify-content:space-between;gap:20px;list-style:none;cursor:pointer;font-size:20px;font-weight:500;line-height:1.5;padding:24px 0}.disclosure summary::-webkit-details-marker{display:none}.disclosure summary:hover{color:var(--accent)}.disclosure[open] .expand-icon{transform:rotate(45deg)}.expand-icon{transition:transform .15s}.disclosure-body{padding:0 0 32px;max-width:100%;}.disclosure-body>p{max-width:1050px}.disclosure-body h3{font-size:21px;margin-bottom:12px}.disclosure-body p+h3{margin-top:24px}.detail-split{display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:start}.text-columns{display:grid;grid-template-columns:1fr 1fr;gap:48px}.source-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin:24px 0}.source-figure{background:white;min-width:0;border:1px solid #e4e7ea;padding:18px}.source-figure a{display:block}.source-figure img{width:100%;height:270px;object-fit:contain}.source-figure figcaption{font-size:12px;line-height:1.7;color:var(--muted);margin-top:16px;padding-top:12px;border-top:1px solid #e4e7ea;display:flex;justify-content:space-between;gap:8px}.source-figure figcaption span{white-space:nowrap;color:var(--accent)}.protection{padding-top:72px;padding-bottom:88px}.protection h2{font-size:34px;margin-bottom:28px}.protection-list summary{font-size:18px}.research{border-top:1px solid var(--line);background:#fff}.research-tabs{display:flex;gap:36px;border-bottom:1px solid var(--line);margin-top:38px}.research-tabs button{font-size:18px;font-weight:500;line-height:1.5;padding:15px 6px 18px;border-bottom:2px solid transparent}.research-tabs [aria-selected=true]{color:var(--accent);border-color:var(--accent)}.study-panel{padding-top:40px;outline:none}.study-grid{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(0,1fr);gap:45px;min-height:350px}.study-grid h3{font-size:28px;margin-bottom:25px}.study-grid>div>p{max-width:670px}.study-insight{border-left:1px solid var(--line);padding:8px 0 0 45px}.metric-label{font-size:17px;color:var(--ink)}.metric{color:var(--accent);font-size:clamp(36px,4.1vw,62px);font-weight:600;line-height:1.3;letter-spacing:-.045em;white-space:nowrap;margin-top:20px}.metric small{font-size:.52em;font-weight:500;letter-spacing:0}.insight-text{font-size:21px;line-height:1.8;color:var(--ink);margin-top:28px}.conditions{font-size:15px;line-height:1.8;margin-top:26px}.study-panel>.disclosure{margin-top:32px}.study-panel>.disclosure summary{font-size:16px}.table-scroll{width:100%;overflow-x:auto}.data-table{border-collapse:collapse;width:100%;font-size:16px;line-height:1.6;text-align:left}.data-table th,.data-table td{padding:18px 24px;border-bottom:1px solid var(--line);vertical-align:top}.data-table th{font-weight:500;background:var(--paper)}.data-table td+td,.data-table th+th{border-left:1px solid #e8ebee}.oil-table th,.oil-table td{padding:18px 26px}.oil-table td{font-size:19px;font-variant-numeric:tabular-nums}.project{background:var(--paper)}.project-grid{display:grid;grid-template-columns:1fr 1.5fr;gap:72px;align-items:start}.project-intro{margin-top:30px;font-size:20px;line-height:1.9}.spec-table thead{position:absolute;width:1px;height:1px;clip-path:inset(50%);overflow:hidden}.spec-table{border-top:1px solid #b9c0c7}.spec-table td{padding:17px 20px}.spec-table td:first-child{width:32%;color:var(--ink);font-weight:500}.spec-table td:last-child{color:#4c5660}.project-docs{margin-top:60px}.project-docs>.disclosure>summary{font-size:22px;font-weight:600}.project-docs .table-scroll{margin:26px 0}.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px 56px}.contact-band{padding-top:72px;background:var(--ink);color:white}.contact-grid{display:grid;grid-template-columns:1.45fr 1fr;gap:70px;padding-bottom:64px}.contact-grid h2{font-size:36px;letter-spacing:-.03em}.contact-grid p{font-size:17px;color:#bfc5cc;margin:18px 0 28px}.contact-grid address{font-style:normal;border-left:1px solid #646970;padding-left:50px;display:flex;justify-content:center;flex-direction:column;gap:20px}.contact-grid address a{display:flex;align-items:center;justify-content:space-between;font-size:23px;letter-spacing:-.02em}.contact-grid address a:hover{color:#ff875c}.contact-band footer{padding:28px 0 32px;border-top:1px solid #596069;font-size:13px;display:flex;gap:30px;align-items:center;justify-content:space-between;color:#c9cdd2}.contact-band footer>a{font-size:15px;color:#fff;font-weight:600}.contact-band footer div{display:flex;gap:24px}.contact-band footer a:hover{color:#ff875c}dialog{padding:24px;border:0;width:min(1100px,94vw);max-height:92vh;overflow:auto;background:white;color:var(--ink)}dialog::backdrop{background:#101820d9}dialog .dialog-header{display:flex;align-items:center;justify-content:space-between;gap:22px;margin-bottom:18px}dialog .dialog-header p{color:var(--ink);font-size:16px}dialog #close-image{padding:6px;display:flex}dialog>img{height:auto;max-height:70vh;object-fit:contain;width:100%}#image-original{display:flex;align-items:center;gap:12px;color:var(--muted);font-size:14px;margin-top:16px}.zoom-image{cursor:zoom-in}
@media(min-width:1600px){.hero-grid{min-height:690px}}
@media(max-width:1150px){.site-header nav{gap:24px}.brand img{width:210px}.hero-grid{min-height:530px}.hero-copy p{font-size:18px}.hero-actions{gap:18px}.hero-actions .button{padding:14px 20px}.engineering-grid{gap:30px;grid-template-columns:1.65fr 1fr}.design-reasons li{gap:14px;grid-template-columns:42px 1fr}.design-reasons h3{font-size:22px}.design-reasons p{font-size:15px}.explorer-stage{height:460px}.study-insight{padding-left:30px}.study-grid{gap:30px}.contact-grid{gap:40px}.contact-grid address{padding-left:30px}.contact-grid address a{font-size:19px}}
@media(max-width:900px){:root{--gutter:32px}.header-inner{height:76px}.menu-toggle{display:flex;padding:10px}.site-header nav{display:none;position:absolute;top:76px;left:0;right:0;background:#fff;padding:20px 32px;border-bottom:1px solid var(--line);z-index:15;box-shadow:0 12px 18px #171b210d;gap:0}.site-header nav.is-open{display:flex;flex-direction:column;align-items:stretch}.site-header nav a{padding:12px 0}.language{border-left:0}.hero-grid{grid-template-columns:1fr;min-height:0;padding:0;gap:0}.hero-copy{padding:52px 0 10px}.hero-copy h1{font-size:54px}.hero-copy p{max-width:580px}.hero-actions{margin-top:28px}.hero-media{margin:0 auto;width:min(100%,660px)}.hero-media img{max-height:500px}.product-facts{padding:25px 0 30px}.product-facts dd{font-size:24px}.section{padding:72px 0}.section-heading h2{font-size:36px}.section-heading>p{font-size:18px}.engineering-grid{grid-template-columns:1fr}.explorer-stage{height:500px}.design-reasons{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.design-reasons li{display:block;padding:0;border:0}.reason-num{font-size:30px;display:block;margin-bottom:12px}.design-reasons h3{font-size:21px}.protection{padding:64px 0}.study-grid{grid-template-columns:1.2fr 1fr;gap:24px}.study-grid h3{font-size:24px}.study-insight{padding-left:24px}.metric{font-size:38px}.insight-text{font-size:18px}.data-table th,.data-table td{padding:15px 17px}.project-grid{grid-template-columns:1fr 1.4fr;gap:32px}.project h2{font-size:33px}.project-intro{font-size:17px}.contact-grid{grid-template-columns:1fr;gap:36px}.contact-grid address{border-left:0;border-top:1px solid #596069;padding:24px 0 0;max-width:430px}.contact-band footer{flex-wrap:wrap}.contact-grid h2{font-size:32px}}
@media(max-width:600px){:root{--gutter:22px}html{scroll-padding-top:72px}.brand img{width:204px}.header-inner{height:70px}.site-header nav{top:70px}.hero-copy{padding-top:38px}.hero-copy h1{font-size:38px;line-height:1.3}.hero-copy p{font-size:16px;line-height:1.85;margin-top:22px}.hero-actions{gap:22px;margin-top:26px;flex-wrap:wrap}.hero-actions .button{padding:13px 18px;min-height:48px;font-size:14px}.text-link{font-size:14px;gap:9px}.hero-media{margin-top:20px}.hero-media img{max-height:360px}.product-facts{padding:23px 0 26px}.product-facts dd{font-size:19px}.product-facts small{font-size:13px}.product-facts dt{font-size:11px;margin-top:5px}.section-nav .wrap{padding:0 12px}.section-nav a{font-size:12px;padding:17px 6px 14px}.section{padding:56px 0}.section-heading{margin-bottom:28px}.section-heading h2,h2{font-size:29px;line-height:1.45;letter-spacing:-.04em}.section-heading>p{font-size:16px;line-height:1.85;margin-top:14px}.engineering-grid{gap:32px}.explorer-stage{height:290px}.explorer-stage:has(iframe){height:460px}.explorer-controls{gap:12px;padding-top:18px}.view-switch button{font-size:13px;padding:9px 12px}.outline{padding:10px 12px;font-size:13px;gap:9px}.outline svg{width:18px}.explorer-links{gap:10px 20px}.quiet-link{font-size:12px}.caption{font-size:12px}.design-reasons{grid-template-columns:1fr;gap:0}.design-reasons li{display:grid;grid-template-columns:40px 1fr;gap:16px;padding:22px 0;border-bottom:1px solid var(--line)}.design-reasons li:first-child{padding-top:0}.design-reasons li:last-child{padding-bottom:0;border:0}.design-reasons h3{font-size:21px}.design-reasons p{font-size:15px;margin-top:7px}.reason-num{font-size:30px}.disclosure summary,.project-docs>.disclosure>summary{font-size:17px;padding:20px 0}.disclosure-body{font-size:15px}.disclosure-body h3{font-size:18px}.detail-split,.text-columns,.faq-grid{grid-template-columns:1fr;gap:24px}.source-grid{grid-template-columns:1fr;gap:20px}.source-figure img{height:240px}.source-figure figcaption{font-size:11px}.protection h2{font-size:26px;line-height:1.5;margin-bottom:24px}.research-tabs{gap:20px;margin-top:26px}.research-tabs button{font-size:15px;padding:12px 0 14px}.study-panel{padding-top:28px}.study-grid{grid-template-columns:1fr;gap:28px;min-height:0}.study-grid h3{font-size:23px;margin-bottom:20px}.data-table{font-size:14px}.data-table th,.data-table td{padding:14px 12px}.oil-table th{font-size:13px;white-space:nowrap}.oil-table td{font-size:18px}.study-insight{padding:25px 0 0;border-left:0;border-top:1px solid var(--line)}.metric-label{font-size:15px}.metric{font-size:48px;margin-top:14px}.insight-text{font-size:18px;margin-top:16px}.conditions{font-size:14px;margin-top:16px}.project-grid{grid-template-columns:1fr;gap:30px}.project h2{font-size:30px}.project-intro{font-size:16px;margin-top:20px}.spec-table td{font-size:14px;padding:16px 10px}.spec-table td:first-child{width:34%}.project-docs{margin-top:40px}.project-docs .data-table{min-width:480px}.contact-band{padding-top:48px}.contact-grid{padding-bottom:40px;gap:30px}.contact-grid h2{font-size:28px;line-height:1.5}.contact-grid p{font-size:15px;margin:16px 0 25px}.contact-grid address a{font-size:19px}.contact-band footer{gap:18px;padding:24px 0 28px}.contact-band footer div{gap:18px;font-size:12px;width:100%}.contact-band footer span{font-size:12px}.contact-band .button{font-size:15px}dialog{padding:16px}.dialog-header p{font-size:14px!important}.source-figure{padding:14px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important}}
/* Blend only the photograph's white matte into the engineering canvas. */
.explorer-stage{background:transparent}.explorer-stage>img{mix-blend-mode:darken}.explorer-stage:has(iframe){background:#fff}
.project{background:#fff;border-top:1px solid var(--line)}
@media(min-width:1151px){h1{font-size:clamp(64px,5vw,76px)}.hero-grid{min-height:660px}.hero-copy p{font-size:20px;max-width:510px}.product-facts{padding-top:34px;padding-bottom:38px}.product-facts dd{font-size:30px}}
@media(max-width:600px){.desktop-break{display:none}}