:root{--yellow:#ffce02;--ink:#20211e;--muted:#646760;--paper:#f7f8f5;--line:#dce0d6;--ease-out:cubic-bezier(.23,1,.32,1);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-synthesis:none;line-height:1.75;scroll-behavior:smooth;scroll-padding-top:104px}
*{box-sizing:border-box}body{margin:0;background:#fff}a{color:inherit;text-decoration:none}button,summary,a{-webkit-tap-highlight-color:transparent;touch-action:manipulation}button{font:inherit}img{max-width:100%;height:auto;display:block}figure,p,h1,h2,h3{margin:0}h1,h2,h3{line-height:1.25;letter-spacing:-.035em}p{color:var(--muted)}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #776000;outline-offset:5px}a,summary{transition:color 150ms ease,background-color 150ms ease}summary{cursor:pointer}summary::marker{color:#8b7000}.shell{width:min(1184px,calc(100% - 80px));margin-inline:auto}.skip-link{position:fixed;left:16px;top:-100px;z-index:100;background:var(--yellow);padding:12px}.skip-link:focus{top:12px}
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.97);border-bottom:1px solid transparent;transition:box-shadow 200ms ease}.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 4px 18px #20211e09}.header-inner{min-height:88px;display:flex;align-items:center;gap:48px}.brand{display:inline-block;flex:none}.brand img{width:154px;height:auto}.desktop-nav{display:flex;gap:28px;font-size:15px}.desktop-nav a{padding-block:12px}.header-actions{margin-left:auto;display:flex;align-items:center;gap:16px}.button{display:inline-flex;justify-content:center;align-items:center;min-height:54px;padding:13px 25px;background:var(--yellow);border:1px solid transparent;border-radius:7px;color:var(--ink);font-size:16px;font-weight:650;line-height:1.5;transition:background-color 150ms ease,box-shadow 150ms ease,transform 150ms var(--ease-out)}.button-small{min-height:44px;padding:10px 18px;font-size:14px}.button-dark{background:var(--ink);color:#fff}.button:active{transform:translateY(1px);transition-duration:0ms}[data-vac-download][aria-busy=true]{cursor:progress;box-shadow:inset 0 0 0 2px currentColor;opacity:.72}.mobile-menu{display:none}
.hero{background:var(--paper)}.hero-grid{min-height:604px;display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:64px;padding-block:54px}.hero-copy h1{font-size:64px;font-weight:750;line-height:1.16;letter-spacing:-.055em}.lead{font-size:18px;line-height:1.9;margin-top:28px;max-width:460px}.hero-action{margin-top:32px;display:flex;align-items:flex-start;flex-direction:column;gap:14px}.hero-action span{font-size:14px;color:var(--muted)}.hero-visual{justify-self:center;width:min(100%,480px)}.hero-visual img{width:100%;aspect-ratio:1;object-fit:contain;border-radius:12px}
.section{padding-top:96px}.section-heading{max-width:760px;margin-bottom:38px}.section-heading h2,.feature-row h2{font-size:38px}.section-heading p{font-size:17px;max-width:700px;margin-top:18px}.scene-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;align-items:start}.scene{background:var(--paper);border-radius:10px;padding:26px 23px}.scene-icon{width:72px;height:72px;object-fit:contain;margin-bottom:22px}.scene h3{font-size:20px;letter-spacing:-.02em}.scene p{font-size:15px;line-height:1.85;margin-top:14px;min-height:140px}.scene-examples{border-top:1px solid var(--line);margin-top:18px;padding-top:8px}.scene-examples summary{font-size:14px;padding:10px 0;min-height:44px}.scene-examples img{width:100%;margin-top:12px;object-fit:contain;border-radius:6px;background:#fff}
.features{padding-top:96px}.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center;margin-bottom:80px}.feature-row figure img{width:100%;border-radius:12px;aspect-ratio:490/360;object-fit:contain}.feature-row p{font-size:17px;line-height:1.9;margin:24px 0}.feature-row.reverse figure{order:2}.feature-row.reverse>div{order:1}.download-band{margin-block:32px 80px;padding:48px 56px;background:var(--yellow);border-radius:12px;display:flex;align-items:center;justify-content:space-between;gap:40px}.download-band h2{font-size:36px}.download-band p{color:#45402d;margin-top:16px}
.site-footer{background:var(--paper);border-top:1px solid var(--line)}.footer-top{display:grid;grid-template-columns:1.3fr .8fr .8fr 1fr;gap:32px;padding-block:48px}.footer-top h2{font-size:15px;letter-spacing:0;margin-bottom:12px}.footer-top a:not(.brand){display:block;min-height:36px;padding-block:6px;font-size:14px;overflow-wrap:anywhere}.footer-top p{font-size:14px;margin-top:12px}.footer-bottom{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);padding-block:20px;gap:24px;color:var(--muted);font-size:13px}.footer-bottom a{min-height:44px;display:flex;align-items:center}
.legal-main{padding-top:44px;padding-bottom:88px}.back-link{display:inline-flex;min-height:44px;align-items:center;text-decoration:underline;text-underline-offset:5px;font-size:14px}.legal-heading h1{font-size:44px;margin:16px 0 28px}.legal-tabs{display:flex;gap:24px;border-bottom:1px solid var(--line)}.legal-tabs a{padding:12px 0;min-height:48px;color:var(--muted)}.legal-tabs a[aria-current=page]{color:var(--ink);box-shadow:inset 0 -3px var(--yellow)}.legal-layout{display:grid;grid-template-columns:230px minmax(0,760px);gap:64px;margin-top:40px}.legal-layout aside{position:relative}.legal-toc{position:sticky;top:120px;padding:20px;background:var(--paper);border-radius:8px;font-size:14px}.legal-toc summary{font-weight:650;min-height:36px}.legal-toc nav{display:grid}.legal-toc a{padding:9px 0;min-height:40px;line-height:1.6;color:var(--muted)}.legal-content{font-size:16px;line-height:1.95;overflow-wrap:anywhere}.legal-content p{margin:0 0 22px;color:#44473f}.legal-content h2{font-size:24px;margin:36px 0 18px;scroll-margin-top:110px}.legal-content h2:first-child{margin-top:0}.legal-content a{color:#715b00;text-decoration:underline}
.vac-float .vac-chat{width:56px;height:56px}.vac-chat:active{transform:translateY(1px)}
@media(hover:hover) and (pointer:fine){.button:hover{background:#ebbc00;box-shadow:0 5px 16px #b28f0026}.button-dark:hover{background:#36372e}.desktop-nav a:hover,.footer-top a:hover,.footer-bottom a:hover,.back-link:hover,.legal-toc a:hover{color:#806500}.scene-examples summary:hover{color:#806500}.vac-chat:hover{box-shadow:0 5px 20px #20211e38}}
@media(max-width:1050px){.shell{width:calc(100% - 48px)}.header-inner{gap:28px}.desktop-nav{gap:20px}.hero-grid{gap:24px;min-height:520px}.hero-copy h1{font-size:50px}.lead{font-size:17px}.scene-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.scene p{min-height:84px}.feature-row{gap:40px}.feature-row h2{font-size:32px}.footer-top{gap:24px;grid-template-columns:1fr 1fr}.legal-layout{grid-template-columns:190px minmax(0,1fr);gap:32px}}
@media(max-width:700px){:root{scroll-padding-top:90px}.shell{width:calc(100% - 40px)}.header-inner{min-height:74px;gap:12px}.brand img{width:128px}.desktop-nav{display:none}.header-actions{gap:10px}.button-small{padding:10px 12px;font-size:12px;min-height:44px}.mobile-menu{display:block}.mobile-menu>summary{padding:10px 0;min-height:44px;font-size:13px}.mobile-menu>nav{position:absolute;left:20px;right:20px;top:calc(100% - 1px);background:#fff;border:1px solid var(--line);border-radius:0 0 10px 10px;box-shadow:0 12px 20px #20211e12;padding:12px 18px;display:grid}.mobile-menu nav a{padding:10px;min-height:44px}.hero-grid{display:flex;flex-direction:column;align-items:stretch;gap:28px;min-height:0;padding-block:36px}.hero-copy h1{font-size:40px;line-height:1.15}.lead{font-size:16px;margin-top:20px;max-width:100%}.hero-action{margin-top:24px;gap:10px}.hero-action .button{width:100%}.hero-action span{font-size:13px}.hero-visual{width:min(100%,330px);align-self:center}.hero-visual img{border-radius:8px}.section{padding-top:56px}.section-heading{margin-bottom:28px}.section-heading h2,.feature-row h2{font-size:30px}.section-heading p{font-size:16px}.scene-grid{gap:16px}.scene{padding:22px 20px}.scene-grid{grid-template-columns:1fr}.scene p{min-height:0;font-size:16px}.scene-icon{width:64px;height:64px;margin-bottom:16px}.scene-examples img{width:min(100%,240px);margin-inline:auto}.features{padding-top:56px}.feature-row{grid-template-columns:1fr;gap:26px;margin-bottom:52px}.feature-row.reverse figure,.feature-row.reverse>div{order:initial}.feature-row p{font-size:16px;margin:18px 0 22px}.feature-row .button{width:100%}.download-band{padding:32px 24px;display:block;margin-block:8px 48px}.download-band h2{font-size:29px}.download-band .button{margin-top:24px;width:100%}.footer-top{grid-template-columns:1fr 1fr;padding-block:32px;gap:28px 20px}.footer-top>div:first-child,.footer-top>div:last-child{grid-column:1/-1}.footer-bottom{align-items:flex-start;font-size:12px}.footer-bottom small{max-width:210px;padding-top:10px}.legal-main{padding-top:28px;padding-bottom:48px}.legal-heading h1{font-size:34px}.legal-tabs{gap:20px;font-size:14px}.legal-layout{grid-template-columns:1fr;gap:28px;margin-top:24px}.legal-toc{position:static;padding:16px}.legal-toc nav{grid-template-columns:1fr 1fr;gap:4px 16px}.legal-content h2{font-size:23px}.vac-float{right:16px!important;bottom:calc(16px + var(--vac-chat-bottom,0px))!important}}
@media(max-width:350px){.shell{width:calc(100% - 32px)}.brand img{width:108px}.header-actions{gap:8px}.header-inner{gap:8px}.button-small{font-size:11px;padding:10px}.hero-copy h1{font-size:37px}.legal-tabs{gap:16px}.footer-bottom small{max-width:165px}}
@media(prefers-reduced-motion:reduce){:root{scroll-behavior:auto}.button,.vac-chat{transform:none!important;transition-property:color,background-color,opacity,box-shadow}.site-header{transition:none}}