/* Visual layer: existing navigation, destinations and product logic stay intact. */
:root{--paper:#f6f5f1;--surface:#ffffff;--ink:#232b2c;--muted:#626c6b;--accent:#b64d2e;--line:#deded6}
html[data-theme=dark]{--paper:#191918;--surface:#252523;--ink:#ece9e2;--muted:#bdb8b0;--accent:#ed9d78;--line:#3b3b36}
body{ -webkit-font-smoothing:antialiased }
main h1,main h2,main h3{font-family:'Microsoft YaHei','PingFang SC',sans-serif!important;text-wrap:balance}
main p{text-wrap:pretty}
main>section{position:relative;padding-top:88px!important;padding-bottom:88px!important}
main>section>div{max-width:1200px!important}
main>section>div>header h2{font-size:clamp(30px,3.4vw,44px)!important;font-weight:600!important;line-height:1.35!important}
main>section>div>header>p:first-child{letter-spacing:1px!important;font-size:12px!important}
main article{transition:none;border-radius:16px!important}
main article:hover{filter:none;transform:none}
main article h3{font-size:20px!important;line-height:1.5}
main article ul{font-size:14px!important}
main article li{padding:7px 0!important}
.start-button,.tutorial-button{display:inline-flex!important;align-items:center;justify-content:center;min-height:48px;box-sizing:border-box;border-radius:10px!important;padding:14px 24px!important;font-size:15px!important;font-weight:700;text-decoration:none;transition:transform 180ms ease-out,background-color 180ms ease-out!important}
.start-button{background:#a54b32!important;color:#fff!important;border:1px solid transparent;box-shadow:0 5px 14px #a54b321a}
.start-button:hover{background:#893b27!important;transform:translateY(-2px)}
.tutorial-button{color:var(--ink)!important;background:var(--surface)!important;border:1px solid var(--line)!important}
.start-button:active,.tutorial-button:active{transform:scale(.98)}
.ambient{isolation:isolate;overflow:hidden;--ambient-state:paused}
.ambient::before,.ambient::after{content:'';position:absolute;z-index:-1;pointer-events:none;animation-play-state:var(--ambient-state)!important}
.ambient::before{width:900px;height:900px;right:-200px;top:-270px;border-radius:50%;background:repeating-radial-gradient(ellipse at center,transparent 0 48px,#be755a22 49px 50px,transparent 51px 80px);animation:field-drift 14s ease-in-out infinite alternate}
.ambient::after{width:650px;height:650px;left:-340px;bottom:-400px;border-radius:50%;background:radial-gradient(circle,#d9775766,transparent 68%);animation:field-drift 10s ease-in-out infinite alternate-reverse}
@keyframes field-drift{from{transform:translate3d(-36px,-16px,0) scale(.94)}to{transform:translate3d(52px,42px,0) scale(1.08)}}
main>.hero{padding-top:128px!important;padding-bottom:40px!important;background:#f3eee5!important;min-height:0!important;text-align:left!important}
.hero-layout{display:grid;grid-template-columns:1.25fr 1fr;gap:20px 36px;align-items:center}
.hero-copy{position:relative;z-index:2}
.hero-copy>p{font-size:13px!important;letter-spacing:1px!important;margin-bottom:24px!important}
.hero h1{font-size:clamp(36px,4.25vw,58px)!important;line-height:1.3!important;margin:0!important}
.hero-title-line{font-weight:700;white-space:nowrap}
.hero-products{justify-content:flex-start;color:var(--muted);font-size:16px;font-weight:500;gap:10px;margin-top:24px}
.hero-separator{color:#bcb1a5}
.hero-actions{margin-top:32px!important;justify-content:flex-start!important}
.hero-cards{grid-column:1/-1;max-width:none;width:100%;margin:12px 0 0;gap:24px}
.hero-card{background:#ffffffa6;border:1px solid #fff;border-radius:14px;padding:22px 28px;box-shadow:0 8px 32px #4a352305}
.hero-card h3{font-size:16px;margin-bottom:8px}
.hero-card p{font-size:14px;line-height:1.8}
.connection-scene{position:relative;height:400px;width:100%;max-width:460px;justify-self:center;isolation:isolate}
.connection-scene::before{content:'';position:absolute;inset:4%;border-radius:50%;background:radial-gradient(circle,#fff7ed 0%,#e5ccb9a6 45%,transparent 70%);z-index:-1}
.connection-core{position:absolute;left:50%;top:48%;transform:translate(-50%,-50%);width:112px;height:112px;border-radius:28px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;background:#fffdfa;color:#b64d2e;border:1px solid #fff;box-shadow:0 20px 48px #7f4c3220}
.connection-core img{width:40px;height:40px}.connection-core strong{font-size:18px;letter-spacing:-.5px}
.orbit{position:absolute;left:50%;top:48%;border:1px solid #b96f494a;border-radius:50%;animation:orbit-turn 12s linear infinite;animation-play-state:var(--ambient-state);box-sizing:border-box}
.orbit-one{width:240px;height:240px;margin:-120px 0 0 -120px}
.orbit-two{width:320px;height:320px;margin:-160px 0 0 -160px;animation-duration:18s;animation-direction:reverse;border-style:dashed;border-color:#927c6255}
.orbit-three{width:390px;height:390px;margin:-195px 0 0 -195px;animation-duration:26s;border-color:#b96f492b}
.orbit i{position:absolute;width:12px;height:12px;border-radius:50%;left:50%;top:-6px;background:#bc5635;box-shadow:0 0 0 6px #bc56351a}
.orbit-two i{background:#5f7b71;box-shadow:0 0 0 6px #5f7b711a}.orbit-three i{width:8px;height:8px;top:-4px;background:#b38a5a}
@keyframes orbit-turn{to{transform:rotate(360deg)}}
.connection-node{position:absolute;padding:13px 18px;border-radius:12px;border:1px solid #ffffffdd;background:#fffdfaeb;box-shadow:0 8px 24px #493d3010;z-index:2}
.connection-node b{display:block;font-size:14px;color:#333b38}.connection-node small{display:block;font-size:11px;color:#788079;margin-top:4px}
.node-web{top:26px;left:24px}.node-desktop{right:-4px;top:154px}.node-code{bottom:34px;left:32px}


#features{background:var(--surface)!important}
#features>div>header{margin-bottom:32px!important}
#features>div>div{display:grid!important;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px!important}
#features article{background:var(--paper)!important;padding:28px!important;border-color:var(--line)!important}
#features article>div:first-child{width:48px;height:48px;display:grid;place-items:center;border-radius:12px;background:#ead7ca66;color:var(--accent);font-size:24px!important}
.faq-section{background:var(--paper)!important}
.faq-section>div>header{max-width:none!important;text-align:left!important;margin-bottom:40px!important;display:flex;align-items:baseline;justify-content:space-between;gap:24px;flex-wrap:wrap}
.faq-section>div>header>p{order:2}
.faq-section>div>div:first-of-type{display:grid!important;grid-template-columns:1fr 1fr;gap:0 40px!important}
.faq-section article{background:transparent!important;border:0!important;border-top:1px solid var(--line)!important;border-radius:0!important;padding:28px 0!important}
.faq-section article>p:first-child{font-size:13px!important;margin-bottom:14px!important;color:var(--accent)!important}
.faq-section article h3{margin-bottom:12px!important;font-size:22px!important}
.faq-section article>p:last-child{font-size:15px!important;line-height:1.9!important}
.faq-section>div>div:last-child{text-align:left!important;margin-top:24px!important;padding-top:24px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:20px}
.scenario-section{background:#ede9e1!important}
.scenario-section>div>header{text-align:left!important;margin-left:0!important}
.scenario-section>div>div{display:grid!important;grid-template-columns:1.25fr 1fr;gap:24px!important;align-items:start}.scenario-section article:nth-child(even){transform:translateY(40px)}.scenario-section{padding-bottom:128px!important}
.scenario-section article{padding:32px!important;position:relative;overflow:hidden;background:var(--surface)!important;border:1px solid var(--line)}
.scenario-section article:first-child{background:#e4e8df!important}
.scenario-section article:last-child{background:#ece2d8!important}
.scenario-section article>div:first-child{position:absolute;right:28px;top:24px;color:var(--accent);font-size:36px!important;opacity:.65}
.scenario-section article h3{margin:0 0 8px!important}
.scenario-section article ul{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
.capability-section{background:#243432!important;color:#f7f5ee}
.capability-section::before{border-radius:50%;opacity:.22;right:auto;left:-480px;top:-200px;background:repeating-radial-gradient(circle,transparent 0 68px,#b7ccb966 69px 70px,transparent 71px 110px)}
.capability-section::after{background:radial-gradient(circle,#c7894366,transparent 68%);left:auto;right:-300px}
.capability-section>div{display:grid;grid-template-columns:300px 1fr;gap:64px;align-items:start}
.capability-section>div>header{text-align:left!important;margin:0!important;position:sticky;top:110px}
.capability-section>div>header h2{font-size:48px!important}
.capability-section>div>header>p:first-child{color:#dab499!important}
.capability-section>div>div{display:grid!important;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px!important}
.capability-section article{background:#ffffff06!important;border-radius:16px!important;padding:28px!important;border:1px solid #ffffff20}
.capability-section article:first-child{background:#ffffff0c!important}
.capability-section article>div:first-child{color:#dab499!important}
.capability-section article h3{margin-top:24px!important}
.advantage-section>div>header{text-align:left!important;margin-left:0!important}
.advantage-section>div>div{display:grid!important;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px!important}
.advantage-section article{padding:0!important;border:0!important;background:transparent!important}
.advantage-section article h3{margin-top:20px!important}
.advantage-section article>div:first-child{background:#ead7ca66!important;color:var(--accent);border-radius:12px!important}
.impact-section{background:#ede9e1!important}
.impact-section>div>div{display:grid!important;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px!important}
.impact-section article{padding:24px!important;border:1px solid var(--line)!important;background:var(--surface)!important}
.impact-section article>strong{font-size:32px!important;font-weight:400;color:#ab8a72!important}
.impact-section article h3{margin-top:16px!important}
.closing-section{text-align:center;background:#f3efe7}
.closing-content{margin:auto}
.eyebrow{font-size:13px;color:var(--accent)}
.closing-content h2{font-size:clamp(30px,4vw,48px);line-height:1.5;margin:20px 0;font-weight:600}
.closing-content>p:not(.eyebrow){font-size:15px;line-height:1.8;color:var(--muted)}
.closing-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:32px}
.design-icon{width:1em;height:1em;display:block}
.conversation-demo{margin-top:24px;padding-top:16px;border-top:1px solid #ffffff20}
.demo-caption{font-size:10px;color:#b6b8ad;display:block;margin-bottom:12px}
.demo-question{padding:9px 12px;background:#ffffff0d;border:1px solid #ffffff12;border-radius:8px 8px 0 8px;font-size:12px;color:#e5dfd2;line-height:1.7}
.demo-response{height:44px;padding-top:12px}
.demo-response i{display:block;width:90%;height:3px;margin:0 0 8px;background:#b8c6ad;border-radius:2px;transform-origin:left;animation:response-line 8s ease-out infinite;animation-play-state:var(--ambient-state)}
.demo-response i:nth-child(2){width:75%;animation-delay:.3s}
.demo-response i:nth-child(3){width:45%;animation-delay:.6s}
@keyframes response-line{0%,10%{transform:scaleX(0);opacity:0}30%,85%{transform:scaleX(1);opacity:.8}100%{transform:scaleX(1);opacity:0}}



.motion-paused *, .motion-paused *::before,.motion-paused *::after{animation-play-state:paused!important}
.motion-paused .reveal{animation:none!important}
.reveal{animation:content-arrive .65s cubic-bezier(.22,1,.36,1) both;animation-delay:var(--reveal-delay,0ms)}
@keyframes content-arrive{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}
html[data-theme=dark] main>.hero,html[data-theme=dark] .closing-section{background:#211e1b!important}
html[data-theme=dark] .hero-card{background:#252523cc;border-color:var(--line)}
html[data-theme=dark] .scenario-section article:first-child,html[data-theme=dark] .scenario-section article:last-child{background:#282c26!important}
html[data-theme=dark] .capability-section{background:#171d19!important}
html[data-theme=dark] .capability-section article{background:#ffffff04!important}
@media(max-width:1000px){.hero-layout{grid-template-columns:1fr}.hero-copy{text-align:center}.hero h1{font-size:52px!important}.hero-products,.hero-actions{justify-content:center!important}.connection-scene{height:360px;margin-top:16px;max-width:420px}.orbit-three{width:350px;height:350px;margin:-175px 0 0 -175px}.capability-section>div{grid-template-columns:1fr;gap:32px}.capability-section>div>header{position:static}.advantage-section>div>div,.impact-section>div>div{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:639px){main>section{padding-top:56px!important;padding-bottom:56px!important}main>.hero{padding-top:104px!important;padding-bottom:32px!important}.hero-layout{gap:16px}.hero-title-line{font-size:clamp(24px,7.5vw,44px)}.hero-products{font-size:12px;gap:6px;margin-top:20px}.hero-products>span:not(.hero-separator){padding:6px}.hero-actions{gap:10px!important}.hero-cards{gap:12px;margin:8px 0 0}.hero-card{padding:18px}.hero-card h3{font-size:16px}.hero-card p{font-size:14px}.connection-scene{height:300px;max-width:330px;margin-top:0}.connection-core{width:88px;height:88px;border-radius:22px}.connection-core img{width:30px;height:30px}.connection-core strong{font-size:15px}.orbit-one{width:170px;height:170px;margin:-85px 0 0 -85px}.orbit-two{width:240px;height:240px;margin:-120px 0 0 -120px}.orbit-three{width:290px;height:290px;margin:-145px 0 0 -145px}.connection-node{padding:9px 12px}.connection-node b{font-size:12px}.connection-node small{font-size:10px}.node-web{top:8px;left:4px}.node-desktop{right:0;top:125px}.node-code{bottom:14px;left:10px}#features>div>div,.scenario-section>div>div,.faq-section>div>div:first-of-type{grid-template-columns:1fr}#features article{padding:24px!important}.faq-section>div>header{margin-bottom:24px!important;gap:8px}.faq-section>div>header>p{order:0}.faq-section>div>div:last-child{align-items:flex-start;flex-direction:column}.scenario-section article{padding:24px!important;transform:none!important}.scenario-section article ul{grid-template-columns:1fr 1fr;font-size:13px!important}.capability-section>div>div{grid-template-columns:1fr}.capability-section article{padding:24px!important}.capability-section article ul{display:grid;grid-template-columns:1fr 1fr;gap:0 10px}.capability-section article h3{margin-top:16px!important}.capability-section>div>header h2{font-size:36px!important}.advantage-section>div>div,.impact-section>div>div{grid-template-columns:1fr}.advantage-section article{padding:24px 0!important;border-bottom:1px solid var(--line)!important}.advantage-section article ul{display:grid;grid-template-columns:1fr 1fr;gap:0 12px}.impact-section article{padding:24px!important}.impact-section article ul{display:grid;grid-template-columns:1fr 1fr}.closing-content h2{font-size:32px}.ambient::before{width:650px;height:650px;right:-300px;top:180px}.ambient::after{width:400px;height:400px;left:-200px;bottom:-200px}.reveal{animation-duration:.45s}}
html[data-theme=dark] .connection-scene::before{opacity:.15}
html[data-theme=dark] .connection-core,html[data-theme=dark] .connection-node{background:#2c302c;border-color:#626357;color:#ed9d78}
html[data-theme=dark] .connection-node b{color:#ece9e2}

@media(prefers-reduced-motion:reduce){.ambient::before,.ambient::after,.orbit,.reveal,.demo-response i{animation:none!important}.start-button,.tutorial-button{transition:none!important}.start-button:hover,.tutorial-button:hover{transform:none}}

html[data-theme=dark] .connection-node small{color:#bdb8b0}
.preview-header .nav-link.sign-in,.preview-header .console-link{box-sizing:border-box;background:transparent;border:0;color:var(--nav-ink);min-height:36px;padding:8px 16px;font-weight:600;white-space:nowrap;transition:color 180ms ease-out}
.preview-header .nav-link.sign-in:hover,.preview-header .console-link:hover{background:transparent;color:var(--accent)}
.preview-header .nav-link.sign-in:active,.preview-header .console-link:active{color:var(--accent)}
@media(max-width:639px){.preview-header.mobile-open .console-link,.preview-header.mobile-open .sign-in{min-height:44px;align-items:center;justify-content:center}}
.preview-header .header-menu>summary.icon-button{transition:color 180ms ease-out}
.preview-header .header-menu>summary.icon-button:hover{background:transparent;color:var(--accent)}
@media(prefers-reduced-motion:reduce){.preview-header .nav-link.sign-in,.preview-header .console-link,.preview-header .header-menu>summary.icon-button{transition:none}}