:root{--paper:#f4f4f4;--ink:#000000;--muted:#5c5c5c;--line:#cccccc;--space:clamp(24px,3.2vw,64px);--ease:cubic-bezier(.16,1,.3,1);--font:'Saira',Arial,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:400 18px var(--font);-webkit-font-smoothing:antialiased}h1,h2,h3,p,figure{margin:0}h1,h2,h3{font-weight:400;letter-spacing:-.04em}p{line-height:1.5}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit;cursor:pointer}img{display:block;width:100%;height:auto}a,button,summary{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid currentColor;outline-offset:6px}::selection{color:white;background:var(--ink)}.skip-link{position:fixed;z-index:100;top:-100px;left:24px;padding:15px;background:white}.skip-link:focus{top:12px}.site-header{position:absolute;z-index:10;top:30px;left:var(--space)}.brand{display:inline-flex;gap:18px;align-items:center}.brand strong{font-family:'Geist',Arial,sans-serif;font-size:35px;font-weight:700;letter-spacing:-.045em;line-height:1}.brand>span{font-size:11px}
/* The static reading layout remains complete when animation is unavailable. */
.product-story{position:relative;padding:145px var(--space) 85px}.story-pin{position:relative}.hero-copy h1{font-size:clamp(78px,11.3vw,185px);line-height:.97;letter-spacing:-.045em}.line-mask{display:block;overflow:hidden;padding-bottom:.12em;margin-bottom:-.12em}.line-mask>span{display:block}.hero-description{font-size:23px;line-height:1.35;max-width:370px;margin-top:40px}.product-visual{position:relative;margin:0 0 60px 28%;height:580px}.story-poster{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;transition:opacity .35s}.product-visual .sequence-canvas{display:block;width:100%;height:100%;opacity:0;transition:opacity .35s}.product-visual.is-ready .sequence-canvas{opacity:1}.product-visual.is-ready .story-poster{opacity:0}.story-chapter{display:grid;grid-template-columns:.85fr 1.15fr;align-items:center;gap:5vw;margin:85px 0}.chapter-copy{min-width:0}.chapter-copy h2{font-size:clamp(52px,6.3vw,102px);line-height:1.025}.chapter-copy>p{font-size:21px;line-height:1.45;color:var(--muted);margin-top:28px;max-width:430px}.chapter-copy .workflow-line{font-size:19px;margin-top:18px;color:var(--ink)}.static-view{height:570px}.static-view img{height:100%;object-fit:contain}.agent-modes{margin-top:34px;max-width:430px}.agent-modes article{border-top:1px solid var(--line);padding:22px 0}.agent-modes h3{font-size:29px;line-height:1.15;margin-bottom:11px}.agent-modes p{font-size:18px;color:var(--muted);line-height:1.4}
/* One pinned product stage carries the entire introduction, assembly and agent story. */
.story-motion .product-story{height:900svh;min-height:5200px;padding:0;isolation:isolate}.story-motion .story-pin{position:sticky;top:0;height:100svh;overflow:hidden}.story-motion .hero-copy{position:absolute;top:139px;left:var(--space);right:var(--space);z-index:3;opacity:var(--hero-opacity,1);transform:translateY(var(--hero-y,0px));pointer-events:none;will-change:opacity,transform}.story-motion .hero-description{position:absolute;left:var(--space);bottom:54px;width:28%;max-width:355px;margin:0;z-index:3;font-size:22px;opacity:var(--hero-opacity,1);transform:translateY(var(--hero-y,0px));will-change:opacity,transform}.story-motion .product-visual{position:absolute;left:38%;top:0;width:64%;height:100%;margin:0;z-index:1;transform:translateY(var(--visual-y,16vh)) scale(var(--visual-scale,1.2));will-change:transform}.story-motion .story-chapter{position:absolute;top:50%;left:var(--space);width:35%;display:block;margin:0;z-index:3;transform:translateY(calc(-50% + var(--chapter-y,24px)));opacity:var(--chapter-opacity,0);pointer-events:none;will-change:opacity,transform}.story-motion .static-view{display:none}.story-motion .choice-chapter{width:36%}.story-motion .choice-chapter h2{font-size:clamp(54px,6vw,96px)}
.js:not(.motion-off) .line-mask>span{animation:title-enter 1.2s var(--ease) both}.js:not(.motion-off) .line-mask:nth-child(2)>span{animation-delay:.12s}@keyframes title-enter{from{transform:translateY(110%)}to{transform:translateY(0)}}
.section{padding:90px var(--space)}.faq{padding-top:90px;padding-bottom:90px;background:white}.faq-grid{display:grid;grid-template-columns:1fr 1.4fr;gap:8vw}.faq h2{font-size:clamp(40px,5vw,68px);line-height:1.05}.questions{border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line)}summary{display:flex;align-items:center;justify-content:space-between;gap:30px;cursor:pointer;list-style:none;padding:25px 0;font-size:19px;line-height:1.4}summary::-webkit-details-marker{display:none}summary>span[aria-hidden="true"]{font-size:24px;transition:transform .3s}details[open] summary>span[aria-hidden="true"]{transform:rotate(45deg)}details p{padding:0 35px 27px 0;font-size:16px;line-height:1.6;color:var(--muted)}footer{border-top:1px solid var(--line);padding:26px var(--space);display:flex;align-items:center;justify-content:space-between;gap:24px}footer p{font-size:13px;color:var(--muted)}#motion-toggle{font:13px var(--font);display:flex;gap:10px;align-items:center;background:none;border:0;padding:12px 0;color:var(--muted)}#motion-toggle span{font-size:15px}
[data-reveal]{opacity:1;transform:none}.js:not(.motion-off) [data-reveal]{opacity:0;transform:translateY(35px);transition:transform 1s var(--ease),opacity .85s}.js:not(.motion-off) [data-reveal].is-visible{opacity:1;transform:none}.motion-off{scroll-behavior:auto}.motion-off *,.motion-off *:before,.motion-off *:after{animation:none!important;transition:none!important}.motion-off .sequence-canvas{display:none}.motion-off .product-visual .story-poster{opacity:1}.motion-off [data-reveal]{opacity:1;transform:none}
@media(max-width:1050px){.chapter-copy h2{font-size:7vw}.chapter-copy>p{font-size:19px}.agent-modes h3{font-size:26px}.agent-modes p{font-size:17px}.story-motion .choice-chapter h2{font-size:6.6vw}.story-motion .story-chapter{width:37%}}
@media(max-width:760px){.site-header{top:27px;left:24px}.brand{gap:12px}.brand strong{font-size:31px}.brand>span{font-size:9px}.product-story{padding:114px 24px 55px}.hero-copy h1{font-size:clamp(56px,12.7vw,94px);line-height:1.01;letter-spacing:-.045em}.hero-description{font-size:21px;margin-top:26px}.product-visual{height:370px;margin:20px -18px 40px}.story-chapter{display:block;margin:60px 0}.chapter-copy h2{font-size:46px;line-height:1.04}.chapter-copy>p{font-size:18px;margin-top:20px;line-height:1.4}.chapter-copy .workflow-line{font-size:17px;margin-top:15px}.static-view{height:420px;margin:20px -18px 0}.agent-modes{margin-top:24px;max-width:500px}.agent-modes article{padding:18px 0}.agent-modes h3{font-size:26px;margin-bottom:9px}.agent-modes p{font-size:17px;max-width:450px}
.story-motion .product-story{height:900svh;min-height:4800px}.story-motion .hero-copy{left:24px;right:24px;top:114px}.story-motion .hero-description{left:24px;bottom:36px;width:calc(100% - 48px);font-size:20px;max-width:330px}.story-motion .product-visual{left:0;top:18%;width:100%;height:77%;margin:0;transform-origin:center;transform:translateY(var(--mobile-shift,0svh)) scale(var(--mobile-scale,1.05))}.story-motion .story-chapter{left:24px;top:40px;width:calc(100% - 48px);max-width:500px;transform:translateY(var(--chapter-y,24px))}.story-motion .chapter-copy h2,.story-motion .choice-chapter h2{font-size:clamp(40px,10.8vw,70px);line-height:1.04}.story-motion .chapter-copy h2 br{display:none}.story-motion .chapter-copy>p{font-size:18px;max-width:370px;line-height:1.35;margin-top:19px}.story-motion .choice-chapter .agent-modes{margin-top:22px;display:grid;grid-template-columns:1fr 1fr;gap:20px}.story-motion .choice-chapter .agent-modes article{padding-top:15px;padding-bottom:0}.story-motion .choice-chapter .agent-modes h3{font-size:22px}.story-motion .choice-chapter .agent-modes p{font-size:15px;line-height:1.4}.section{padding:60px 24px}.faq-grid{display:block}.faq h2{font-size:44px}.questions{margin-top:35px}summary{font-size:17px;padding:22px 0;gap:20px}details p{font-size:15px;padding-right:10px}footer{padding:24px}footer p{max-width:210px;font-size:12px}#motion-toggle{font-size:12px;flex:none}}
@media(max-width:360px){.hero-copy h1{font-size:51px}.story-motion .hero-description{font-size:18px;bottom:24px}.story-motion .chapter-copy h2,.story-motion .choice-chapter h2{font-size:36px}.story-motion .chapter-copy>p{font-size:16px}.story-motion .choice-chapter{top:28px}.story-motion .choice-chapter .agent-modes{gap:16px;margin-top:18px}.story-motion .choice-chapter .agent-modes h3{font-size:20px}.story-motion .choice-chapter .agent-modes p{font-size:14px}footer p{max-width:165px}}
@media(prefers-reduced-motion:reduce){html:not(.js){scroll-behavior:auto}html:not(.js) *{animation:none!important;transition:none!important}}

/* Existing ETT information follows the campaign's continuous product stage. */
:root{--surface:#fff;--font:'Saira','PingFang SC','Microsoft YaHei',Arial,sans-serif}
html.dark{--paper:#101010;--surface:#1b1b1b;--ink:#f4f4f4;--muted:#bcbcbc;--line:#484848;color-scheme:dark}
html{scroll-padding-top:32px}main section{scroll-margin-top:32px}.site-header{right:var(--space);display:flex;justify-content:space-between;align-items:center;gap:24px}.header-actions{display:flex;align-items:center;gap:10px}.header-actions nav{display:flex;gap:26px;margin-right:22px;font-size:14px}.header-actions a:hover{border-bottom:1px solid currentColor}.header-actions button{background:none;border:1px solid var(--line);border-radius:0;min-width:42px;min-height:38px;padding:5px 10px;font-size:13px}.header-actions button:hover{background:var(--surface)}#theme{font-size:20px;padding:2px 8px}.editorial{border-top:1px solid var(--line)}.editorial h2{font-size:clamp(46px,5.4vw,82px);line-height:1.06}.section-heading{display:grid;grid-template-columns:1.1fr 1fr;gap:8vw;align-items:start}.section-heading>p,.section-intro{font-size:21px;line-height:1.5;color:var(--muted);max-width:540px}.section-intro{margin-top:26px}.three-columns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:4vw;margin-top:70px}.three-columns article{border-top:1px solid var(--line);padding-top:26px}.three-columns h3,.principles h3{font-size:29px;line-height:1.15;margin-bottom:16px}.three-columns p,.principles p{font-size:18px;color:var(--muted);line-height:1.5}.two-columns{display:grid;grid-template-columns:1.1fr 1fr;gap:8vw}.connection-steps{counter-reset:steps;list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}.connection-steps li{counter-increment:steps;display:grid;grid-template-columns:40px 1fr;gap:18px;border-bottom:1px solid var(--line);padding:25px 0}.connection-steps li:before{content:counter(steps,decimal-leading-zero);font:14px 'Geist Mono',monospace;color:var(--muted);padding-top:7px}.connection-steps p{font-size:21px;line-height:1.4}.small-note{font-size:14px;color:var(--muted);line-height:1.6;margin-top:24px;max-width:670px}.use-cases{background:var(--surface)}.principles article{border-top:1px solid var(--line);padding:24px 0}.principles article:last-child{border-bottom:1px solid var(--line)}.boundary-labels{display:flex;gap:12px 24px;flex-wrap:wrap;margin-top:34px;max-width:440px}.boundary-labels span{font-size:14px;padding-bottom:6px;border-bottom:1px solid var(--line)}.model-note{border-top:1px solid var(--line);padding-top:24px;margin-top:48px;max-width:760px;color:var(--muted);font-size:16px;line-height:1.55}.faq{background:var(--surface)}.explore{padding-top:110px;padding-bottom:95px}.explore h2{font-size:clamp(48px,7vw,110px);max-width:1120px}.explore .section-intro{max-width:680px}.resource-links{display:flex;gap:24px 32px;flex-wrap:wrap;align-items:center;margin-top:38px}.resource-links a{font-size:17px;line-height:1.4;border-bottom:1px solid var(--line);padding:10px 0}.resource-links .primary-link{color:var(--paper);background:var(--ink);padding:15px 24px;border:1px solid var(--ink)}.resource-links a:hover{border-color:var(--ink)}.footer-actions{display:flex;align-items:center;gap:26px}.footer-actions a{font-size:13px;color:var(--muted)}.footer-actions a:hover{color:var(--ink)}
@media(max-width:760px){.site-header{right:24px;gap:12px}.header-actions nav{display:none}.header-actions{gap:7px}.header-actions button{min-width:38px;min-height:38px}.section-heading,.two-columns{grid-template-columns:1fr;gap:30px}.editorial h2{font-size:46px}.section-heading>p,.section-intro{font-size:18px;line-height:1.5}.three-columns{grid-template-columns:1fr;margin-top:40px;gap:30px}.three-columns h3,.principles h3{font-size:27px}.three-columns p,.principles p{font-size:17px}.connection-steps p{font-size:19px}.model-note{margin-top:30px;font-size:15px}.explore{padding-top:70px;padding-bottom:60px}.explore h2{font-size:48px}.resource-links{align-items:flex-start;flex-direction:column;gap:13px;margin-top:30px}.resource-links a{font-size:16px}.footer-actions{gap:12px 22px;flex-wrap:wrap}footer{align-items:flex-start;flex-direction:column;gap:14px}footer p{max-width:none}.footer-actions a{font-size:12px}html[data-locale="zh"] .brand>span{font-family:'Saira',Arial,sans-serif}html[data-locale="zh"].story-motion .chapter-copy h2{line-height:1.12}}
html[data-locale="zh"] h1,html[data-locale="zh"] h2,html[data-locale="zh"] h3{letter-spacing:-.025em}
@media(max-width:360px){.brand{gap:8px}.brand>span{font-size:8px}.header-actions button{min-width:34px;padding:4px 7px}.editorial h2{font-size:40px}.explore h2{font-size:42px}}

/* Presentation pages begin below the continuous product story. */
html.js{scroll-padding-top:0}
.presentation-slide{height:100svh;min-height:100svh;display:flex;align-items:center;padding:clamp(28px,7svh,72px) var(--space);scroll-margin-top:0}
.slide-content{width:100%;max-height:100%;overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:var(--line) transparent;padding:4px 0}
.slide-content:focus-visible{outline:1px solid var(--line);outline-offset:8px}
.presentation-slide .three-columns{margin-top:clamp(32px,6svh,64px)}
.presentation-slide .model-note{margin-top:32px}
.small-note,.model-note,footer p{color:var(--ink)}
@media(max-width:760px){.presentation-slide{padding:30px 24px}.presentation-slide .section-heading,.presentation-slide .two-columns{gap:24px}.presentation-slide .three-columns{margin-top:28px;gap:22px}.presentation-slide .three-columns article{padding-top:18px}.presentation-slide.editorial h2{font-size:40px}.presentation-slide .principles article{padding:18px 0}.presentation-slide .model-note{margin-top:24px}.presentation-slide .questions{margin-top:24px}.presentation-slide .resource-links{margin-top:24px}}

.presentation-slide.explore footer{padding:26px 0 0;margin-top:40px}

/* Native language selection stays readable in all seven locales. */
#language{font:13px var(--font);color:var(--ink);background:var(--paper);border:1px solid var(--line);border-radius:0;min-height:38px;width:124px;padding:5px 8px;cursor:pointer}
#language:focus-visible{outline:2px solid currentColor;outline-offset:6px}
#language option{background:var(--paper);color:var(--ink)}
:root{--font:'Saira','PingFang SC','Hiragino Sans','Apple SD Gothic Neo','Microsoft YaHei',Arial,sans-serif}
.section-heading>* ,.two-columns>* ,.faq-grid>*{min-width:0}
h1,h2,h3,p,summary,.resource-links a{overflow-wrap:anywhere}
html:is([lang="ja"],[lang="ko"]){line-break:strict}
html:is([lang="ja"],[lang="ko"]) h1,html:is([lang="ja"],[lang="ko"]) h2,html:is([lang="ja"],[lang="ko"]) h3{letter-spacing:-.025em;line-height:1.12}
@media(max-width:760px){#language{width:94px;font-size:12px}.header-actions{flex-shrink:0}.brand{flex-shrink:1}.brand>span{white-space:nowrap}.hero-copy h1{font-size:clamp(44px,12.7vw,94px)}html:is([lang="es"],[lang="fr"],[lang="de"]) .hero-copy h1{font-size:clamp(38px,10.6vw,80px)}html[lang="ko"] .hero-copy h1{font-size:clamp(38px,10.8vw,80px)}}
@media(max-width:360px){#language{width:82px}.brand>span{font-size:8px}}

/* Fixed navigation uses the same page destinations as wheel and keyboard input. */
.page-navigation{display:none;position:fixed;z-index:30;right:var(--space);bottom:max(18px,env(safe-area-inset-bottom));align-items:center;gap:2px;padding:4px;border:1px solid var(--line);border-radius:999px;background:var(--paper);box-shadow:0 4px 20px #0000000d}
.js .page-navigation{display:flex}
.page-navigation button{display:grid;place-items:center;width:44px;height:44px;border:0;border-radius:50%;background:transparent;font-size:25px;line-height:1}
.page-navigation button:hover:not(:disabled){background:var(--ink);color:var(--paper)}
.page-navigation button:disabled{opacity:.25;cursor:default}
.page-navigation button:focus-visible{outline-offset:1px}
#page-number{min-width:58px;text-align:center;font:12px 'Geist Mono',monospace;font-variant-numeric:tabular-nums;color:var(--muted)}
.presentation-slide{padding-bottom:max(92px,calc(78px + env(safe-area-inset-bottom)))}
@media(max-width:760px){.page-navigation{right:18px;bottom:max(12px,env(safe-area-inset-bottom))}.story-motion .hero-description{bottom:88px}.presentation-slide{padding-bottom:max(88px,calc(74px + env(safe-area-inset-bottom)))}}

.sequence-canvas{position:absolute;inset:0;pointer-events:none;object-fit:contain}