@font-face{font-family:Manrope;src:url('assets/Manrope.ttf') format('truetype');font-style:normal;font-weight:200 800;font-display:swap}
:root{--paper:#f8f8f4;--ink:#153c37;--forest:#173e39;--brand:#438c82;--muted:#667974;--line:#d8e0da;--gutter:clamp(24px,5vw,104px);--ease:cubic-bezier(.22,.61,.36,1);font-family:Manrope,'Segoe UI',Arial,'Microsoft YaHei',sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:115px}body{margin:0}body.dialog-open{overflow:hidden}button,input,textarea,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit}a{color:inherit;text-decoration:none}button{border:0;background:none}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid #71b8ae;outline-offset:5px}button:disabled{cursor:default}svg{display:block}img{display:block;max-width:100%}.icon{width:20px;height:20px;stroke:currentColor;stroke-width:1.5;fill:none;flex-shrink:0}.icon-library{position:absolute;width:0;height:0;overflow:hidden}.skip-link{position:fixed;z-index:50;top:10px;left:10px;padding:12px;background:white;transform:translateY(-160%)}.skip-link:focus{transform:none}
.site-header{height:108px;padding:0 3.8vw 0 var(--gutter);display:flex;align-items:center;justify-content:space-between;gap:30px;position:sticky;top:0;z-index:20;background:var(--paper);transition:transform 360ms var(--ease),box-shadow 360ms var(--ease)}.site-header.is-hidden{transform:translateY(-102%)}.site-header.is-scrolled{box-shadow:0 1px 0 #153c3712}.brand{display:flex;align-items:center;gap:21px;flex-shrink:0}.brand img{width:57px;height:57px;object-fit:contain}.brand-type{display:flex;flex-direction:column;gap:4px}.brand-type strong{font-size:29px;letter-spacing:.045em;line-height:1.05;font-weight:800}.brand-type>span{font-size:11px;letter-spacing:.2em;font-weight:750}.desktop-nav{display:flex;align-items:center;gap:clamp(18px,2.05vw,36px);margin-left:auto}.desktop-nav a,.desktop-nav button,.language-toggle{font-size:13px;font-weight:750;white-space:nowrap}.desktop-nav a,.desktop-nav button{position:relative;padding:13px 0;text-transform:uppercase;letter-spacing:.012em}.desktop-nav a::after,.desktop-nav button::after{content:'';position:absolute;bottom:6px;left:0;right:0;height:1px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform 220ms var(--ease)}.desktop-nav a:hover::after,.desktop-nav button:hover::after{transform:scaleX(1)}.header-actions{display:flex;align-items:center;gap:27px}.language-toggle{padding:14px 0}.language-toggle span{opacity:.45;padding:0 3px}.quote-button{display:flex;align-items:center;gap:20px;padding:19px 26px;background:var(--brand);color:#fff;font-size:13px;font-weight:750;letter-spacing:.04em;text-transform:uppercase;white-space:nowrap;transition:background .25s}.quote-button:hover{background:#2f746a}.quote-button .icon{width:17px;height:17px}.menu-toggle{display:none}.mobile-menu[hidden]{display:none}
.hero{position:relative;isolation:isolate;background:radial-gradient(ellipse at 33% 5%,#224c46 0,transparent 63%),var(--forest);color:var(--paper);overflow:hidden}.hero-inner{display:grid;grid-template-columns:.83fr 1.17fr;gap:4.6vw;padding:28px 3.8vw 72px var(--gutter);max-width:2200px;margin:auto;align-items:center;min-height:clamp(650px,44.7vw,910px)}.hero-copy{position:relative;z-index:2;padding-bottom:20px}.eyebrow{margin:0;font-size:12px;font-weight:750;letter-spacing:.16em;text-transform:uppercase;line-height:1.7}.hero .eyebrow{white-space:nowrap;font-size:clamp(10px,.81vw,14px);letter-spacing:.16em}.copy-rule{width:160px;height:1px;background:#b4d2ca;margin:25px 0 33px}.hero h1{margin:0;font-size:clamp(66px,6.12vw,118px);letter-spacing:-.065em;font-weight:800;line-height:.95}.hero h1>span{display:block;white-space:nowrap}.hero-description{font-size:clamp(17px,1.49vw,26px);line-height:1.5;font-weight:400;letter-spacing:-.025em;margin:19px 0 38px;max-width:630px}.hero-actions{display:flex;gap:24px;align-items:stretch}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:23px;min-height:62px;padding:19px 27px;font-size:14px;line-height:1.35;font-weight:750;text-transform:uppercase;letter-spacing:.01em;transition:background 250ms,color 250ms,border-color 250ms}.button .icon{transition:transform 250ms var(--ease)}.button:hover .icon{transform:translate(2px,-2px)}.button-light{color:var(--ink);background:var(--paper);border:1px solid var(--paper)}.button-light:hover{background:#e4eeea}.button-light:hover .icon{transform:translateY(3px)}.button-outline{background:transparent;border:1px solid #c1d5cc;color:var(--paper)}.button-outline:hover{background:#ffffff0b;border-color:#fff}.button-green{background:var(--brand);color:white;border:1px solid var(--brand)}.button-green:hover{background:#2f746a}.hero-actions .button{white-space:nowrap;padding:20px 24px;flex:1}
.material-story{display:grid;grid-template-columns:1.05fr 1fr;grid-template-rows:1.78fr 1fr;gap:16px;height:clamp(560px,39.5vw,785px);min-width:0;align-self:start}.visual-tile{display:block;position:relative;padding:0;overflow:hidden;border-radius:23px;min-width:0;background:#a7c5bd;isolation:isolate}.visual-tile img{width:100%;height:100%;object-fit:cover;transition:transform 900ms var(--ease)}button.visual-tile:hover img{transform:scale(1.025)}.tile-fiber{grid-column:1;grid-row:1/3;margin-bottom:27px}.tile-tote{grid-column:2;grid-row:1}.tile-tote img{object-position:center 40%}.detail-pair{grid-column:2;grid-row:2;display:grid;grid-template-columns:1.05fr 1fr;gap:16px;min-height:0}.tile-detail img{object-position:68% 80%;filter:brightness(.69) saturate(.75)}.tile-caption{position:absolute;bottom:0;left:0;right:0;display:flex;align-items:center;justify-content:space-between;gap:15px;padding:54px 20px 20px;background:linear-gradient(transparent,#0e302ccd);color:#fff;font-size:14px;font-weight:650;opacity:0;transform:translateY(8px);transition:transform 350ms var(--ease),opacity 350ms}.visual-tile:hover .tile-caption,.visual-tile:focus-visible .tile-caption{opacity:1;transform:none}.hero-curve{position:absolute;bottom:-1px;left:0;width:100%;height:84px;fill:var(--paper);pointer-events:none;z-index:3}
.film-section{padding:0 var(--gutter);max-width:2200px;margin:0 auto 0}.section-cue{display:flex;align-items:center;flex-direction:column;width:max-content;margin:10px auto 76px;gap:11px;font-size:11px;font-weight:750;letter-spacing:.23em;text-transform:uppercase}.section-cue>span:first-child{height:25px;width:1px;background:var(--ink);transition:height 250ms}.section-cue:hover>span:first-child{height:33px}.film-intro{display:flex;justify-content:space-between;align-items:flex-end;gap:48px;max-width:1420px;margin:0 auto 44px}.film-intro .eyebrow{color:var(--brand);margin-bottom:20px}.film-intro h2{font-size:clamp(36px,3.3vw,64px);font-weight:600;line-height:1.12;letter-spacing:-.045em;margin:0}.film-intro>p{color:var(--muted);font-size:17px;line-height:1.8;margin:0 0 3px;max-width:330px}.film-preview{display:block;position:relative;width:100%;max-width:1420px;height:420px;overflow:hidden;border-radius:20px;margin:auto;padding:0;background:#dce8e0;text-align:left}.film-preview>img{height:100%;width:100%;object-fit:cover;object-position:50% 55%;transition:transform 1s var(--ease);opacity:.55}.film-preview:hover>img{transform:scale(1.025)}.film-word{position:absolute;top:50%;left:6%;transform:translateY(-50%);font-size:clamp(40px,5.8vw,98px);line-height:1;letter-spacing:-.065em;font-weight:800}.play-control{width:76px;height:76px;border-radius:50%;background:var(--paper);display:grid;place-items:center;position:absolute;top:50%;left:69%;transform:translate(-50%,-50%);transition:background 250ms,scale 250ms}.play-control svg{fill:var(--ink);width:25px;height:25px}.film-preview:hover .play-control{background:white;scale:1.06}.film-caption{position:absolute;left:6%;right:5%;bottom:28px;display:flex;justify-content:space-between;font-size:13px;font-weight:700;letter-spacing:.04em}.preview-note{display:flex;align-items:center;justify-content:space-between;gap:24px;font-size:12px;line-height:1.6;color:var(--muted);max-width:1420px;margin:27px auto 0;padding-bottom:34px}.preview-note a{display:flex;gap:12px;align-items:center;white-space:nowrap}.preview-note .icon{width:15px;height:15px}
dialog{border:0;border-radius:14px;padding:40px;background:var(--paper);color:var(--ink);max-height:calc(100dvh - 40px);overflow:auto;box-shadow:0 24px 100px #08201d33}dialog::backdrop{background:#071e1c9c}dialog[open]{animation:dialog-in 280ms var(--ease) both}.detail-dialog,.quote-dialog{width:min(620px,calc(100% - 32px))}.dialog-top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:27px}.dialog-top .eyebrow{color:var(--brand);font-size:11px}.icon-button{display:grid;place-items:center;width:40px;height:40px;border:1px solid var(--line);border-radius:50%}.icon-button:hover{background:#e5eee8}dialog h2{font-size:40px;line-height:1.15;letter-spacing:-.045em;margin:0 0 20px;font-weight:650}.dialog-intro{font-size:16px;line-height:1.7;color:var(--muted);margin:0 0 27px}.detail-list{border-top:1px solid var(--line)}.detail-item{display:flex;align-items:center;justify-content:space-between;padding:17px 0;border-bottom:1px solid var(--line);font-size:17px}.detail-item .icon{color:var(--brand);width:17px}.dialog-note{font-size:12px;color:var(--muted);line-height:1.65;margin:24px 0}.detail-dialog .button,.quote-dialog .button{width:100%}.quote-dialog label{display:flex;flex-direction:column;gap:9px;margin-bottom:18px;font-size:13px;font-weight:650}.quote-dialog input,.quote-dialog textarea,.quote-dialog select{padding:13px 14px;border:1px solid #b9c9c1;background:transparent;color:var(--ink);border-radius:3px;width:100%;font-size:16px;font-weight:400}.quote-dialog textarea{resize:vertical}.quote-dialog input::placeholder,.quote-dialog textarea::placeholder{color:#74857d}.form-result{padding:18px;background:#e3ece5;font-size:14px;line-height:1.7}.video-dialog{width:min(1100px,calc(100% - 32px));background:#12352f;color:white;padding:22px}.video-dialog .dialog-top{margin-bottom:18px}.video-dialog .icon-button{color:white}.video-dialog .icon-button:hover{background:#255248}.video-dialog video{display:block;width:100%;aspect-ratio:16/9;background:#09231f}.video-error{font-size:14px;text-align:center}
@keyframes enter{from{opacity:0;transform:translateY(17px)}to{opacity:1;transform:none}}@keyframes dialog-in{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}.enter{animation:enter 850ms var(--ease) both}.copy-rule{animation-delay:50ms}.hero h1{animation-delay:100ms}.hero-description{animation-delay:170ms}.hero-actions{animation-delay:240ms}.tile-fiber{animation-delay:100ms}.tile-tote{animation-delay:180ms}.detail-pair{animation-delay:240ms}.js .reveal{opacity:0;transform:translateY(22px);transition:opacity 750ms var(--ease),transform 750ms var(--ease)}.js .reveal.is-visible{opacity:1;transform:none}
@media(min-width:1850px){.site-header{height:120px}.desktop-nav a,.desktop-nav button,.language-toggle{font-size:14px}.quote-button{font-size:14px}.hero-inner{gap:5vw}.hero-copy{padding-bottom:10px}.hero-actions{max-width:620px}.hero-actions .button{padding:24px 28px}}
@media(max-width:1450px){.site-header{gap:25px;height:96px}.brand{gap:14px}.brand img{width:46px;height:46px}.brand-type strong{font-size:24px}.brand-type>span{font-size:9px}.desktop-nav{gap:20px}.desktop-nav a,.desktop-nav button,.language-toggle{font-size:12px}.header-actions{gap:20px}.quote-button{font-size:12px;padding:17px 20px;gap:14px}.hero-inner{gap:3.7vw;min-height:660px}.material-story{height:563px;gap:14px}.detail-pair{gap:14px}.hero h1{font-size:6.25vw}.hero .eyebrow{white-space:normal;max-width:450px}.hero-actions{gap:15px}.hero-actions .button{padding:18px;font-size:12px;gap:14px}.hero-description{font-size:19px}}
@media(max-width:1230px){.desktop-nav{display:none}.site-header{padding-right:var(--gutter)}.header-actions{margin-left:auto}.language-toggle{font-size:14px}.quote-button{font-size:13px}.menu-toggle{width:36px;height:40px;padding:9px 2px;display:flex;flex-direction:column;justify-content:center;gap:7px}.menu-toggle span{width:27px;height:1px;background:var(--ink);transition:transform 250ms}.menu-toggle[aria-expanded=true] span:first-child{transform:translateY(4px) rotate(45deg)}.menu-toggle[aria-expanded=true] span:last-child{transform:translateY(-4px) rotate(-45deg)}.mobile-menu{position:absolute;top:100%;left:0;right:0;background:var(--paper);padding:20px var(--gutter) 32px;border-top:1px solid var(--line);box-shadow:0 15px 20px #173e3910;display:flex;flex-direction:column;gap:0}.mobile-menu a,.mobile-menu button{display:block;text-align:left;padding:14px 0;border-bottom:1px solid var(--line);font-size:19px;font-weight:600}.hero-inner{grid-template-columns:.88fr 1.12fr;gap:30px;padding-top:26px}.hero h1{font-size:6.4vw}.hero-actions{flex-wrap:wrap;gap:12px}.hero-actions .button{flex:initial;min-height:54px;padding:16px 18px;font-size:12px}.hero-description{font-size:18px}.material-story{height:530px;gap:12px}.detail-pair{gap:12px}.visual-tile{border-radius:17px}}
@media(max-width:850px){.site-header{height:84px}.brand img{width:42px;height:42px}.brand-type strong{font-size:22px}.brand-type>span{font-size:8px}.header-actions{gap:20px}.quote-button{display:none}.hero-inner{grid-template-columns:1fr;gap:40px;padding:51px var(--gutter) 70px}.hero-copy{padding-bottom:0;max-width:660px}.hero .eyebrow{font-size:11px;white-space:normal;max-width:500px}.copy-rule{margin:22px 0 28px;width:90px}.hero h1{font-size:clamp(63px,10.6vw,88px);line-height:.97;letter-spacing:-.055em}.hero-description{font-size:19px;max-width:450px;margin:23px 0 29px}.hero-actions{gap:16px;flex-wrap:nowrap}.hero-actions .button{font-size:13px;padding:18px 22px;min-height:60px}.material-story{height:620px;max-height:80vw;gap:14px;grid-template-rows:1.65fr 1fr}.tile-fiber{margin-bottom:15px}.detail-pair{gap:14px}.hero-curve{height:50px}.section-cue{margin-top:6px;margin-bottom:54px}.film-intro{align-items:flex-start;gap:30px}.film-intro h2{font-size:39px}.film-intro>p{font-size:15px;max-width:225px}.film-preview{height:350px}.film-word{font-size:68px}.preview-note{align-items:flex-start}.preview-note>span{max-width:70%}}
@media(max-width:540px){:root{--gutter:23px}.site-header{height:77px;gap:12px}.brand{gap:10px}.brand img{width:37px;height:37px}.brand-type strong{font-size:20px;letter-spacing:.025em}.brand-type>span{font-size:7px;letter-spacing:.15em}.header-actions{gap:16px}.language-toggle{font-size:12px}.menu-toggle{width:24px;padding:0}.menu-toggle span{width:23px}.hero-inner{padding-top:38px;gap:33px}.hero .eyebrow{font-size:10px;letter-spacing:.12em;max-width:330px;line-height:1.8}.copy-rule{margin:19px 0 25px}.hero h1{font-size:clamp(48px,11.9vw,64px);letter-spacing:-.06em;line-height:1.02}.hero-description{font-size:16px;line-height:1.6;max-width:310px;margin:21px 0 26px}.hero-actions{gap:10px;flex-wrap:wrap}.hero-actions .button{font-size:10px;min-height:52px;padding:15px 13px;gap:13px;flex:1;justify-content:space-between}.hero-actions .icon{width:15px;height:15px}.material-story{height:400px;max-height:none;grid-template-columns:1.05fr 1fr;grid-template-rows:1.45fr 1fr;gap:10px}.visual-tile{border-radius:14px}.detail-pair{gap:10px}.tile-fiber{margin-bottom:19px}.tile-tote img{object-fit:cover;object-position:50% 50%}.tile-caption{display:none}.hero-curve{height:39px}.section-cue{margin-top:7px;margin-bottom:44px;font-size:10px}.film-intro{display:block;margin-bottom:29px}.film-intro h2{font-size:36px}.film-intro .eyebrow{font-size:11px;margin-bottom:14px}.film-intro>p{margin-top:23px;max-width:unset;font-size:16px}.film-preview{height:300px;border-radius:14px}.film-word{font-size:48px;top:42%;left:8%}.play-control{width:55px;height:55px;left:77%;top:62%}.play-control svg{width:19px;height:19px}.film-caption{font-size:11px;left:8%;bottom:24px}.preview-note{font-size:11px;gap:16px}.preview-note>span{max-width:65%}.preview-note a{gap:6px}dialog{padding:24px;border-radius:12px}.dialog-top{margin-bottom:22px}dialog h2{font-size:33px}.detail-item{font-size:16px}.video-dialog{padding:15px}.video-dialog .dialog-top{margin-bottom:12px}.dialog-top .eyebrow{font-size:10px}}
html[lang=zh-CN] .hero h1{letter-spacing:-.03em;font-size:clamp(66px,6vw,116px);line-height:1.08}html[lang=zh-CN] .hero h1>span:last-child{display:none}html[lang=zh-CN] .hero-description{max-width:530px;letter-spacing:0;line-height:1.75;font-size:21px}html[lang=zh-CN] .hero-actions .button{letter-spacing:.06em}html[lang=zh-CN] .desktop-nav button,html[lang=zh-CN] .desktop-nav a{font-size:14px}
@media(max-width:850px){html[lang=zh-CN] .hero h1{font-size:74px}html[lang=zh-CN] .hero-description{font-size:19px;max-width:490px}}@media(max-width:540px){html[lang=zh-CN] .hero h1{font-size:15vw}html[lang=zh-CN] .hero-description{font-size:16px;max-width:320px}html[lang=zh-CN] .hero-actions .button{font-size:12px}}
/* Final proportions follow the approved desktop composition. */
@media(min-width:1451px){.hero-inner{padding-bottom:40px}.material-story{height:clamp(590px,41.1vw,810px)}.hero h1{font-size:clamp(84px,6.35vw,118px);letter-spacing:-.055em}.desktop-nav a,.desktop-nav button,.language-toggle,.quote-button{font-size:14px}}
@media(min-width:851px) and (max-width:1450px){.desktop-nav a,.desktop-nav button,.language-toggle{font-size:14px}.quote-button{font-size:14px}.hero-actions .button{font-size:14px;white-space:normal}}
@media(min-width:1231px) and (max-width:1360px){.desktop-nav{gap:15px}.desktop-nav a,.desktop-nav button{font-size:12px}.brand-type strong{font-size:22px}.header-actions{gap:14px}.site-header{gap:18px}.quote-button{padding:17px 16px;font-size:12px}}
@media(max-width:850px){.hero-actions .button{font-size:14px}.hero .eyebrow{font-size:12px}.language-toggle{font-size:14px}}
@media(max-width:540px){.hero-actions{flex-wrap:nowrap}.hero-actions .button{font-size:12px;white-space:normal;line-height:1.45}.hero .eyebrow{font-size:11px}.hero-actions .button span{max-width:120px}.section-cue{font-size:12px}.preview-note{font-size:12px}.film-caption{font-size:12px}.brand-type>span{font-size:8px}.language-toggle{font-size:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}.js .reveal{opacity:1;transform:none}.enter{opacity:1;transform:none}}