:root{--ink:#071a24;--ink2:#0a2531;--water:#0e7280;--blue:#1590a3;--acid:#d9ff3f;--paper:#f3f2ea;--white:#fff;--muted:#64757b;--line:rgba(7,26,36,.14);--radius:22px;--max:1240px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Microsoft YaHei","PingFang SC","Noto Sans SC",Arial,sans-serif;-webkit-font-smoothing:antialiased}img{max-width:100%;display:block}a{color:inherit;text-decoration:none}button{font:inherit}a:focus-visible,button:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--acid);outline-offset:4px}.skip-link{position:absolute;left:-9999px;top:10px;background:var(--acid);color:var(--ink);padding:10px 16px;z-index:100}.skip-link:focus{left:10px}.site-header{position:fixed;z-index:50;left:0;right:0;top:0;border-bottom:1px solid rgba(255,255,255,.12);background:rgba(7,26,36,.76);backdrop-filter:blur(18px);color:#fff}.nav-wrap{max-width:var(--max);height:78px;margin:auto;padding:0 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@media(max-width:640px){.nav-wrap{height:68px}.brand b{font-size:19px}.site-header.open nav{top:68px}.hero{padding-top:68px;min-height:980px}.hero-grid{padding-top:55px}.hero h1{font-size:56px}.hero-lead{font-size:15px}.hero-actions{align-items:flex-start;flex-direction:column;gap:8px}.hero-facts>div{min-width:0;flex:1}.hero-facts dt{font-size:25px}.hero-visual{height:380px;margin-top:10px}.hero-ring{width:300px;height:300px}.hero-visual img{width:105%}.float-label{font-size:10px}.label-one{right:0}.label-two{left:0}.section{padding:78px 20px}.section-head h2,.tech-copy h2,.faq h2,.about h2{font-size:41px}.product-grid{display:block}.product-card{margin-bottom:16px}.product-image{aspect-ratio:1.16}.case-grid{grid-template-columns:1fr}.case-grid article{min-height:210px}.tech-badge{right:-6px}.trust-links{flex-direction:column}.trust-links a{width:100%}.about{padding-left:20px;padding-right:20px}.faq{gap:42px}.closing h2{font-size:54px}footer{grid-template-columns:1fr}.footer-links{justify-content:flex-start}.copyright{grid-column:1}.answer-strip p{font-size:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
.hero-visual img{width:84%;object-fit:cover;mix-blend-mode:normal;clip-path:polygon(7% 0,100% 0,93% 100%,0 100%);filter:saturate(.9) drop-shadow(0 35px 34px rgba(0,0,0,.42));transform:rotate(-4deg)}
.hero-background{position:absolute;z-index:0;inset:0;width:100%;height:100%;object-fit:cover;object-position:center center}
.hero:before{z-index:1;background:linear-gradient(90deg,rgba(3,17,23,.96) 0%,rgba(3,17,23,.8) 29%,rgba(3,17,23,.22) 58%,rgba(3,17,23,.08) 100%)}
.hero-grid{z-index:2;grid-template-columns:1fr}.hero-copy{max-width:610px}.hero-visual{display:none}.waterline{z-index:3}
@media(max-width:980px){.hero{min-height:860px}.hero-grid{min-height:750px}.hero-background{object-position:63% center}.hero:before{background:linear-gradient(90deg,rgba(3,17,23,.96) 0%,rgba(3,17,23,.78) 50%,rgba(3,17,23,.24) 100%)}}
@media(max-width:640px){.hero{min-height:790px}.hero-grid{min-height:700px;align-items:flex-start}.hero-background{object-position:69% center}.hero:before{background:linear-gradient(180deg,rgba(3,17,23,.92) 0%,rgba(3,17,23,.7) 48%,rgba(3,17,23,.28) 100%)}.hero-copy{padding-top:45px}.hero-facts{margin-top:38px}}

/* Multi-page layouts */
.site-header nav a[aria-current="page"]{color:var(--acid)}
.page-hero{min-height:610px;padding:150px max(24px,calc((100vw - var(--max))/2)) 70px;background:var(--ink);color:#fff;display:grid;grid-template-columns:1fr .78fr;align-items:center;gap:8vw;overflow:hidden;position:relative}
.page-hero:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 35%,rgba(21,144,163,.28),transparent 34%);pointer-events:none}
.page-hero>div,.page-hero>img{position:relative;z-index:1}.page-hero h1{font-size:clamp(58px,7vw,96px);line-height:.96;letter-spacing:-.065em;margin:18px 0 28px}.page-hero h1 em{font-style:normal;color:var(--acid)}.page-hero>div>p:last-child{max-width:660px;color:#b5c7cc;line-height:1.85;font-size:17px}.page-hero>img{width:100%;aspect-ratio:1;object-fit:cover;clip-path:polygon(8% 0,100% 0,92% 100%,0 100%);filter:saturate(.8)}
.breadcrumb{font-size:11px;color:#7f969e;letter-spacing:.1em}.breadcrumb a{color:#cad7da}.product-page-hero>img{object-position:center}.tech-page-hero>img{object-position:center}.about-page-hero>img,.faq-page-hero>img{object-position:center}
.answer-cards{background:#fff}.selector-grid{display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}.selector-grid a{min-height:220px;padding:24px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);display:flex;flex-direction:column;transition:.2s}.selector-grid a:hover{background:var(--acid)}.selector-grid b{font-size:19px}.selector-grid span{margin-top:12px;font-size:12px;color:var(--muted);line-height:1.6}.selector-grid strong{margin-top:auto;font-size:12px}
.catalog{background:var(--paper)}.catalog-item{scroll-margin-top:78px;display:grid;grid-template-columns:1fr 1fr;min-height:690px}.catalog-item.reverse .catalog-image{order:2}.catalog-item.reverse .catalog-copy{order:1}.catalog-image{background:#e5e8e5;overflow:hidden}.catalog-image img{width:100%;height:100%;object-fit:cover}.catalog-copy{padding:80px max(35px,8vw);display:flex;flex-direction:column;justify-content:center}.catalog-copy h2{font-size:clamp(45px,5vw,70px);letter-spacing:-.055em;margin:0 0 10px}.catalog-lead{color:var(--muted);line-height:1.75;font-size:16px;margin:0 0 28px}.catalog-copy dl{margin:0}.catalog-copy dl>div{display:grid;grid-template-columns:110px 1fr;gap:16px;padding:12px 0;border-top:1px solid var(--line)}.catalog-copy dt{font-size:11px;color:#718188}.catalog-copy dd{margin:0;font-size:13px;font-weight:700}.fit{background:#fff;padding:17px 19px;font-size:12px;line-height:1.7;margin:28px 0 0}.flagship-row{background:#e8f0ee}
.direct-answer{max-width:1000px;margin:auto;text-align:center}.direct-answer .eyebrow{justify-content:center}.direct-answer h2{font-size:clamp(38px,5vw,65px);letter-spacing:-.05em;margin:0}.direct-answer>p:last-child{max-width:850px;margin:25px auto 0;color:var(--muted);line-height:1.9;font-size:17px}
.tech-modules{padding-top:20px;display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line)}.tech-modules article{background:var(--paper);padding:58px}.tech-modules article>span,.capability-grid article>span{font-size:11px;font-weight:900;color:var(--water)}.tech-modules h2{font-size:30px;margin:22px 0 12px}.tech-modules p,.tech-modules li{color:var(--muted);line-height:1.75;font-size:14px}.tech-modules ul{padding-left:18px}.safety-note,.patent-band{padding:85px max(24px,calc((100vw - var(--max))/2));background:var(--water);color:#fff;display:grid;grid-template-columns:1fr 1fr;gap:8vw;align-items:center}.safety-note h2,.patent-band h2{font-size:clamp(40px,5vw,66px);letter-spacing:-.055em;margin:0}.safety-note>div:last-child p,.patent-band p{color:#c6dcdf;line-height:1.8}.safety-note a{display:inline-block;margin-top:16px;color:var(--acid);font-weight:800;font-size:13px}
.brand-story{display:grid;grid-template-columns:.8fr 1.2fr;gap:10vw}.brand-story h2{font-size:clamp(40px,5vw,68px);letter-spacing:-.055em;margin:0}.brand-story>div:last-child{font-size:17px;color:var(--muted);line-height:1.9}.capability-grid{padding-top:20px;display:grid;grid-template-columns:1fr 1fr}.capability-grid article{padding:55px;border:1px solid var(--line);margin:-1px 0 0 -1px}.capability-grid h2{font-size:28px;margin:25px 0 12px}.capability-grid p{font-size:14px;color:var(--muted);line-height:1.75}.patent-band{background:var(--ink)}.patent-band .button{justify-self:end}.brand-values{background:#fff}.value-row{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line)}.value-row b{text-align:center;padding:40px 18px;border-right:1px solid var(--line);font-size:19px}.value-row b:last-child{border:0}
.faq-page{display:grid;grid-template-columns:300px 1fr;gap:8vw;align-items:start}.faq-page aside{position:sticky;top:120px}.faq-page aside h2{font-size:42px;letter-spacing:-.05em}.faq-page aside nav{display:flex;flex-direction:column;border-top:1px solid var(--line)}.faq-page aside nav a{padding:13px 0;border-bottom:1px solid var(--line);font-size:13px;color:var(--muted)}.faq-groups>section{scroll-margin-top:110px;margin-bottom:64px}.group-label{font-size:11px;letter-spacing:.15em;color:var(--water);font-weight:900;margin:0 0 12px}.faq-groups details p{max-width:760px}
@media(max-width:980px){.page-hero{grid-template-columns:1fr .8fr;min-height:590px;gap:40px}.page-hero h1{font-size:58px}.selector-grid{grid-template-columns:repeat(2,1fr)}.catalog-item{min-height:580px}.catalog-copy{padding:55px 35px}.tech-modules{grid-template-columns:1fr}.brand-story{grid-template-columns:1fr;gap:35px}.faq-page{grid-template-columns:1fr}.faq-page aside{position:static}.faq-page aside nav{flex-direction:row;flex-wrap:wrap;gap:10px;border:0}.faq-page aside nav a{border:1px solid var(--line);padding:8px 12px}.value-row{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.page-hero{min-height:auto;padding:120px 20px 60px;grid-template-columns:1fr}.page-hero h1{font-size:50px}.page-hero>div>p:last-child{font-size:14px}.page-hero>img{max-height:360px}.selector-grid{grid-template-columns:1fr}.selector-grid a{min-height:160px}.catalog-item,.catalog-item.reverse{display:flex;flex-direction:column;min-height:0}.catalog-item.reverse .catalog-image,.catalog-item.reverse .catalog-copy{order:initial}.catalog-image{height:390px}.catalog-copy{padding:55px 20px}.catalog-copy dl>div{grid-template-columns:86px 1fr}.tech-modules article,.capability-grid article{padding:38px 20px}.safety-note,.patent-band{grid-template-columns:1fr;padding:70px 20px}.capability-grid{grid-template-columns:1fr}.patent-band .button{justify-self:start}.value-row{grid-template-columns:1fr}.value-row b{border-right:0;border-bottom:1px solid var(--line)}.faq-page aside h2{font-size:38px}}

/* Image sizing: preserve product proportions and avoid accidental cropping */
.hero{min-height:720px}.hero-grid{min-height:640px}.hero-background{object-fit:cover;object-position:50% 54%}
.product-image{aspect-ratio:1;background:#eef0ed}.product-image img{object-fit:contain;object-position:center}
.page-hero{min-height:560px;grid-template-columns:minmax(0,1fr) minmax(300px,440px);gap:7vw}.page-hero>img{width:100%;max-width:420px;justify-self:end;aspect-ratio:1;object-fit:contain;object-position:center;clip-path:none;border-radius:18px;box-shadow:0 28px 70px rgba(0,0,0,.28)}
.catalog-item{grid-template-columns:minmax(360px,44%) 1fr;min-height:620px}.catalog-image{padding:44px;background:#e7eae6;display:grid;place-items:center}.catalog-image img{width:100%;height:auto;max-height:540px;aspect-ratio:1;object-fit:contain;object-position:center;border-radius:10px;box-shadow:0 22px 55px rgba(7,26,36,.1)}
.tech-visual{display:grid;place-items:center}.tech-visual img{width:100%;height:auto;aspect-ratio:1;object-fit:contain}
@media(max-width:980px){.hero{min-height:760px}.hero-grid{min-height:680px}.hero-background{object-position:62% 52%}.page-hero{grid-template-columns:minmax(0,1fr) 330px}.page-hero>img{max-width:330px}.catalog-item{grid-template-columns:42% 58%;min-height:560px}.catalog-image{padding:26px}}
@media(max-width:640px){.hero{min-height:710px}.hero-grid{min-height:630px}.hero-background{object-position:72% 52%}.page-hero{grid-template-columns:1fr;gap:34px}.page-hero>img{width:min(100%,320px);max-width:320px;justify-self:center}.catalog-item,.catalog-item.reverse{display:flex;flex-direction:column}.catalog-image{width:100%;height:auto;min-height:0;aspect-ratio:1;padding:22px}.catalog-image img{max-height:none}.product-image{aspect-ratio:1}}

/* Product detail pages */
.detail-hero{padding:128px max(24px,calc((100vw - var(--max))/2)) 70px;min-height:760px;background:#eef0ed;display:grid;grid-template-columns:minmax(420px,1fr) minmax(0,1fr);gap:7vw;align-items:center}.detail-photo{aspect-ratio:1;display:grid;place-items:center;background:#fff;border-radius:22px;overflow:hidden;box-shadow:0 30px 80px rgba(7,26,36,.1)}.detail-photo img{width:100%;height:100%;object-fit:contain}.detail-summary h1{font-size:clamp(56px,6vw,88px);letter-spacing:-.065em;line-height:1;margin:12px 0}.detail-position{font-size:16px;color:var(--water);font-weight:800;margin:0 0 24px}.detail-answer{font-size:16px;line-height:1.85;color:var(--muted);max-width:650px}.detail-answer b{display:block;color:var(--ink);font-size:18px;margin-bottom:4px}.key-stats{display:grid;grid-template-columns:repeat(3,1fr);margin:34px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.key-stats>div{padding:20px 12px 20px 0}.key-stats b,.key-stats span{display:block}.key-stats b{font-size:20px}.key-stats span{font-size:10px;color:var(--muted);margin-top:5px}.dark-button{background:var(--ink);color:#fff}.dark-button span{color:var(--acid)}
.detail-content{display:grid;grid-template-columns:.72fr 1.28fr;gap:9vw;align-items:start}.detail-content h2,.product-faq h2{font-size:clamp(40px,5vw,64px);letter-spacing:-.055em;margin:0 0 20px}.detail-content>div>p:last-child{color:var(--muted);line-height:1.8}.spec-list{margin:0;border-top:2px solid var(--ink)}.spec-list>div{display:grid;grid-template-columns:130px 1fr;gap:20px;padding:17px 0;border-bottom:1px solid var(--line)}.spec-list dt{font-size:11px;color:var(--muted)}.spec-list dd{margin:0;font-size:14px;font-weight:700;line-height:1.6}.detail-benefits{display:grid;grid-template-columns:repeat(3,1fr);background:var(--ink);color:#fff;padding:0 max(24px,calc((100vw - var(--max))/2))}.detail-benefits article{min-height:300px;padding:55px 38px;border-right:1px solid rgba(255,255,255,.14)}.detail-benefits article:first-child{border-left:1px solid rgba(255,255,255,.14)}.detail-benefits span{font-size:11px;color:var(--acid)}.detail-benefits h2{font-size:26px;margin:42px 0 12px}.detail-benefits p{font-size:13px;line-height:1.75;color:#a9bcc2}.product-faq{display:grid;grid-template-columns:.65fr 1.35fr;gap:8vw}.product-next{display:flex;justify-content:space-between;align-items:center;padding:38px max(24px,calc((100vw - var(--max))/2));background:var(--acid);font-weight:900}.product-next a:last-child{text-align:right}.product-next span{display:block;font-size:9px;font-weight:500;letter-spacing:.13em;margin-bottom:4px}
@media(max-width:980px){.detail-hero{grid-template-columns:42% 58%;gap:40px;min-height:680px}.detail-summary h1{font-size:58px}.detail-content{grid-template-columns:1fr;gap:35px}.product-faq{grid-template-columns:1fr;gap:35px}}
@media(max-width:640px){.detail-hero{padding:105px 20px 60px;display:flex;flex-direction:column;min-height:0}.detail-photo{width:100%}.detail-summary h1{font-size:50px}.key-stats b{font-size:16px}.detail-content{padding-left:20px;padding-right:20px}.spec-list>div{grid-template-columns:90px 1fr}.detail-benefits{grid-template-columns:1fr;padding:0}.detail-benefits article{min-height:220px;border-right:0;border-bottom:1px solid rgba(255,255,255,.14);padding:42px 20px}.detail-benefits article:first-child{border-left:0}.detail-benefits h2{margin-top:25px}.product-faq{padding-left:20px;padding-right:20px}.product-next{padding:28px 20px;font-size:12px;gap:20px}}
.fit a{display:block;margin-top:10px;color:var(--water);font-weight:900}

/* Technology page: consistent Chinese wrapping and calmer reading rhythm */
.technology-page{max-width:100%;overflow-x:clip}.technology-page .page-hero>div,.technology-page .direct-answer,.technology-page .tech-modules,.technology-page .tech-modules article,.technology-page .safety-note>div{min-width:0}.technology-page .direct-answer{width:100%;max-width:none;margin:0}.technology-page .tech-page-hero>img{width:100%;max-width:520px;height:auto;aspect-ratio:auto;object-fit:contain;object-position:center}.technology-page .page-hero>div>p:last-child{max-width:38em}.technology-page .direct-answer h2{width:100%;max-width:none;margin-inline:auto;line-height:1.14;letter-spacing:-.035em;writing-mode:horizontal-tb;text-orientation:mixed;white-space:normal;word-break:normal}.technology-page .direct-answer h2 .question-main,.technology-page .direct-answer h2 .question-tail{writing-mode:horizontal-tb;text-orientation:mixed}.technology-page .direct-answer>p:last-child{text-wrap:pretty}.technology-page .tech-modules{align-items:stretch}.technology-page .tech-modules article{display:flex;flex-direction:column}.technology-page .tech-modules h2{line-height:1.25;letter-spacing:-.025em;text-wrap:balance;word-break:normal;overflow-wrap:anywhere}.technology-page .tech-modules p{margin:0 0 17px;text-wrap:pretty}.technology-page .tech-modules ul{margin:0;padding-left:1.25em}.technology-page .tech-modules li+li{margin-top:5px}.technology-page .safety-note h2{line-height:1.12;letter-spacing:-.035em;text-wrap:balance}.technology-page .safety-note>div:last-child p{margin:0;text-wrap:pretty}
@media(max-width:640px){.technology-page .tech-page-hero,.technology-page .tech-modules,.technology-page .safety-note{width:100%;max-width:100%;grid-template-columns:minmax(0,1fr)}.technology-page .tech-page-hero>div,.technology-page .tech-modules article,.technology-page .safety-note>div{width:100%;max-width:100%}.technology-page .tech-page-hero h1{font-size:48px;line-height:1}.technology-page .tech-page-hero>div>p:last-child{max-width:100%;font-size:15px;line-height:1.85;overflow-wrap:anywhere}.technology-page .tech-page-hero>img{width:100%;max-width:100%;height:auto;aspect-ratio:auto;object-fit:contain}.technology-page .direct-answer{width:100%;max-width:100%;padding-top:72px;padding-bottom:72px}.technology-page .direct-answer h2{display:block;width:100%;max-width:100%;font-size:34px;line-height:1.18;letter-spacing:-.025em;writing-mode:horizontal-tb;white-space:normal}.technology-page .direct-answer h2 .question-main,.technology-page .direct-answer h2 .question-tail{display:block;width:100%;white-space:nowrap;writing-mode:horizontal-tb}.technology-page .direct-answer>p:last-child{text-align:left;font-size:15px;line-height:1.85;overflow-wrap:anywhere}.technology-page .tech-modules article{padding:36px 22px}.technology-page .tech-modules h2{font-size:26px;margin-top:18px}.technology-page .tech-modules p,.technology-page .tech-modules li{max-width:100%;font-size:14px;line-height:1.8;overflow-wrap:anywhere}.technology-page .safety-note{gap:26px}.technology-page .safety-note h2{font-size:38px}.technology-page .safety-note>div:last-child p{font-size:14px;line-height:1.85;overflow-wrap:anywhere}}

/* Keep the direct-answer question on one horizontal line in every browser. */
.technology-page .direct-answer h2{display:block!important;width:100%!important;max-width:none!important;font-size:clamp(22px,5vw,65px)!important;line-height:1.15!important;writing-mode:horizontal-tb!important;text-orientation:mixed!important;white-space:nowrap!important;word-break:keep-all!important}
@media(max-width:640px){.technology-page .direct-answer h2{font-size:clamp(22px,7vw,30px)!important;letter-spacing:-.02em!important}}

/* Keep the automatic-return explanation as a normal horizontal paragraph. */
.technology-page .direct-answer .return-answer{display:block!important;position:static!important;width:100%!important;min-width:0!important;max-width:900px!important;height:auto!important;margin:25px auto 0!important;writing-mode:horizontal-tb!important;-webkit-writing-mode:horizontal-tb!important;text-orientation:mixed!important;direction:ltr!important;white-space:normal!important;word-break:normal!important;overflow-wrap:break-word!important;text-align:left!important;columns:auto!important;transform:none!important}
@media(max-width:640px){.technology-page .direct-answer .return-answer{width:100%!important;max-width:100%!important;margin-top:22px!important;font-size:15px!important;line-height:1.85!important}}

/* FAQ layout: reset the intrinsic image height and keep narrow content contained. */
.faq-page-hero>div,.faq-page-hero>img,.faq-page>aside,.faq-groups{min-width:0}
.faq-page-hero>img{height:auto;aspect-ratio:1;object-fit:contain}
.faq-page summary{align-items:flex-start;overflow-wrap:anywhere;word-break:normal}
.faq-page summary span{flex:0 0 auto}
.faq-page details p{overflow-wrap:anywhere;word-break:normal}
@media(max-width:640px){.faq-page aside nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.faq-page aside nav a{width:100%;padding:10px 8px;text-align:center}.faq-page summary{font-size:15px;line-height:1.65}.faq-page details p{margin-right:0}}