:root{--green:#006d57;--ink:#152e2a;--muted:#657671;--line:#dfe7e2;--paper:#f5f7f2;--lime:#daf08b}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.7 'Segoe UI','Microsoft YaHei',sans-serif}button,select{font:inherit}button,a,select{touch-action:manipulation}button{cursor:pointer}a{color:inherit;text-decoration:none}header{height:92px;display:flex;align-items:center;justify-content:space-between;padding:0 5%;border-bottom:1px solid var(--line)}.brand{display:flex;gap:13px;align-items:center}.brand>b{background:var(--green);color:white;border-radius:12px;padding:7px 13px;font-size:23px}.brand span{font-size:21px;font-weight:700;line-height:1.3}.brand small{display:block;font-size:10px;font-weight:400;letter-spacing:2px;margin-top:4px}nav{display:flex;gap:30px;align-items:center;font-size:13px}.pill{background:#e7eddf;padding:6px 13px;border-radius:20px;color:var(--green);font-size:11px}main{max-width:1540px;margin:auto;padding:0 5%}.hero{padding:72px 0 65px;display:grid;grid-template-columns:1.1fr 1fr;gap:8%;align-items:center}.eyebrow{font-size:10px;letter-spacing:2px;color:var(--green);font-weight:700}h1{font-size:clamp(38px,4.1vw,65px);line-height:1.25;letter-spacing:-2px;margin:22px 0}h1 span{color:var(--green)}.hero p{max-width:510px;color:var(--muted);font-size:16px;margin:0 0 28px}.primary{display:inline-flex;justify-content:space-between;align-items:center;gap:35px;background:var(--green);border:0;border-radius:7px;color:white;padding:14px 22px;font-weight:600}.primary:hover{background:#00533f}.hero-foot{display:flex;align-items:center;gap:15px;color:var(--muted);font-size:12px;margin-top:25px}.hero-foot i{height:3px;width:3px;background:#8d9c94;border-radius:50%}.product-map{background:#e4ebdf;border-radius:22px;padding:28px;position:relative;overflow:hidden;background-image:radial-gradient(#bfcebd 1px,transparent 1px);background-size:18px 18px}.map-label{font-size:10px;letter-spacing:2px;color:#6d806f}.device{margin:35px auto;background:#fff;padding:26px;border-radius:15px;width:82%;box-shadow:0 18px 40px #29483712;display:flex;flex-direction:column;align-items:center}.scan-mark{color:var(--green);font-size:64px;line-height:1.3}.device strong{font-size:17px}.device span,.map-note{font-size:11px;color:var(--muted)}.orbit{display:flex;justify-content:space-between;gap:8px}.orbit span{background:var(--paper);padding:8px 12px;border-radius:6px;font-size:11px}.map-note{margin-top:20px;text-align:center}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:20px}h2{font-size:29px;font-weight:600;letter-spacing:-1px;margin:10px 0 20px}.section-heading p{font-size:12px;color:var(--muted);margin-bottom:25px}#tabs{display:grid;grid-template-columns:repeat(6,1fr);gap:8px;margin:10px 0 18px}#tabs button{padding:15px 6px;background:transparent;border:1px solid var(--line);color:var(--muted);border-radius:8px;font-weight:600;font-size:13px}#tabs button[aria-selected=true]{background:var(--ink);color:white;border-color:var(--ink)}.demo{background:white;border:1px solid var(--line);border-radius:16px;display:grid;grid-template-columns:1fr 1.65fr .9fr;overflow:hidden;min-height:560px}.demo>aside,.stage{padding:28px}.demo>aside:first-child{background:#fafbf8;border-right:1px solid var(--line)}h3{font-size:21px;line-height:1.5;margin:12px 0}.demo p{color:var(--muted);font-size:13px}.demo label{display:block;font-size:11px;color:var(--muted);margin:28px 0 8px}select{padding:11px;width:100%;border:1px solid var(--line);border-radius:7px;background:white;color:var(--ink);font-size:12px}.record{margin-top:25px;display:flex;flex-direction:column;gap:5px}.record small,.next small,.boundary small{font-size:10px;color:var(--muted)}.record strong{font-size:13px}.record span{font-size:10px;color:#87948e}.text-button{background:none;border:0;color:var(--green);padding:0;margin-top:28px;font-size:12px}.stage-top{display:flex;justify-content:space-between;font-size:11px;color:var(--muted);gap:10px}.stage-top span:first-child{color:var(--green);background:#edf5eb;padding:5px 9px;border-radius:4px}#steps{display:flex;margin:22px 0 28px;gap:5px}#steps button{height:5px;flex:1;background:#e7ece7;border:0;border-radius:4px;padding:0}#steps button.active{background:var(--green)}#steps button.done{background:#a8c8a8}.action-card{background:var(--paper);padding:24px;border-radius:12px;min-height:325px}.action-card h3{font-size:25px}.facts{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:20px 0}.facts div{border-top:1px solid #dce4d9;padding-top:10px;display:flex;flex-direction:column}.facts small{font-size:10px;color:var(--muted)}.facts strong{font-size:14px}.action-card .primary{width:100%;font-size:13px}.nav-actions{display:flex;align-items:center;justify-content:space-between;margin-top:15px}.nav-actions button{background:none;border:0;color:var(--green);font-size:12px}.nav-actions span{font-size:10px;color:#8b9891}.nav-actions button:disabled{opacity:.3}.result{border-left:1px solid var(--line)}.result h3{font-size:16px}#evidence{margin:25px 0;min-height:100px}#evidence p{border-left:2px solid var(--lime);padding-left:12px;font-size:12px}.next{padding:15px;background:#edf2e9;border-radius:8px;display:flex;flex-direction:column;gap:5px}.next strong{font-size:13px}.boundary{border-top:1px solid var(--line);margin-top:25px;padding-top:17px}.boundary p{font-size:11px}.principles{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:35px;padding:75px 0}.principles p{font-size:12px;color:var(--muted)}.principles h2{font-size:25px}.principles h3{font-size:16px}.principles article b{font-size:11px;color:var(--green)}footer{border-top:1px solid var(--line);padding:30px 0 40px}footer b{font-size:24px}footer p{font-size:13px}footer small{font-size:10px;color:var(--muted)}button:focus-visible,a:focus-visible,select:focus-visible{outline:3px solid #8bad53;outline-offset:4px}@media(max-width:1050px){.demo{grid-template-columns:1fr 1.5fr}.result{grid-column:1/-1;border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;gap:5px 25px}.result .eyebrow,.result h3{grid-column:1/-1}#evidence{margin:5px}.boundary{margin:5px}.principles{grid-template-columns:1fr 1fr}}@media(max-width:680px){header{height:77px}nav a{display:none}.brand small{font-size:8px}.pill{font-size:9px}.hero{grid-template-columns:1fr;padding:40px 0;gap:30px}h1{font-size:43px}.product-map{padding:20px}.device{margin:20px auto}.section-heading{display:block}.section-heading p{margin-top:0}h2{font-size:24px}#tabs{grid-template-columns:repeat(3,1fr)}.demo{display:block}.demo>aside,.stage{padding:23px}.demo>aside:first-child{border-bottom:1px solid var(--line)}.record{margin-top:15px}.demo label{margin-top:15px}.result{display:block}.principles{gap:25px;padding:40px 0}.principles>div{grid-column:1/-1}.principles article:last-child{grid-column:1/-1}.hero p{font-size:14px}}
.demo{grid-template-columns:.78fr 1.08fr 1.12fr;min-height:850px}.demo>aside,.stage{padding:24px}.result{background:#edf2ed;display:block}.phone-label{display:flex;justify-content:space-between;align-items:center;gap:10px;margin:0 auto 16px;max-width:370px;font-size:12px;font-weight:600}.phone-label small{font-size:9px;color:#6b8175;font-weight:400}.phone{position:relative;width:100%;max-width:370px;margin:auto;border:7px solid #233c33;border-radius:38px;background:#f3faf7;overflow:hidden;box-shadow:0 20px 36px #17362a1a;height:700px;display:flex;flex-direction:column}.phone-status{background:#087f5b;color:white;display:flex;justify-content:space-between;padding:12px 23px 5px;font-size:10px}.mini-brand{background:linear-gradient(140deg,#056146,#087f5b 70%,#0a9666);color:white;padding:19px 18px 20px;position:relative;display:flex;flex-direction:column;gap:3px;flex-shrink:0}.mini-brand small{font-size:10px;opacity:.8}.mini-brand strong{font-size:16px;letter-spacing:-.5px}.mini-brand>span{font-size:9px;opacity:.8}.mini-capsule{position:absolute;right:12px;top:5px;font-size:12px;border:1px solid #ffffff65;border-radius:20px;padding:0 9px}.mini-title{background:white;padding:12px 16px;display:flex;gap:10px;align-items:center;border-bottom:1px solid #e1ebe4;flex-shrink:0}.mini-title span{font-size:20px;color:#087f5b;line-height:1}.mini-title b{font-size:14px}.mini-scroll{overflow-y:auto;flex:1;padding:12px;scrollbar-width:thin;scrollbar-color:#b1c9bb transparent}.mini-scroll .mcard{background:white;border:1px solid #e0ebe5;border-radius:12px;padding:14px;margin-bottom:12px;box-shadow:0 4px 13px #1d4e370a;font-size:12px}.mini-scroll h4{font-size:13px;color:#1d3027;margin:0 0 9px}.mini-scroll .mhero{padding:18px;border-radius:12px;color:white;background:linear-gradient(140deg,#056146,#087f5b,#0a9666);margin-bottom:12px}.mhero .mrow{border:0;color:inherit}.mhero h4{color:white;font-size:20px;margin:8px 0}.mhero small{font-size:10px;opacity:.9}.mini-scroll .mrow{display:flex;justify-content:space-between;gap:12px;border-bottom:1px solid #edf2ed;padding:7px 0;font-size:11px;align-items:center}.mini-scroll .mrow span{color:#718178}.mini-scroll .mrow b{font-weight:500;text-align:right;word-break:break-word}.mini-scroll .mrow:last-child{border:0}.mini-scroll button{width:100%;border:0;border-radius:8px;padding:11px 8px;background:#087f5b;color:white;font-size:12px;margin-top:9px;font-weight:500}.mini-scroll button.secondary{color:#087f5b;background:#e7f7f0;border:1px solid #d7ebde}.mini-scroll button.hot{outline:2px solid #b2d35c;outline-offset:3px;position:relative}.mini-scroll button.hot:after{content:'点击体验';position:absolute;right:8px;top:-12px;background:#daf08b;color:#244b2a;border-radius:4px;padding:1px 5px;font-size:9px}.mini-scroll input:not([type=checkbox]),.mini-scroll select,.mini-scroll textarea{width:100%;border:1px solid #dce8e0;padding:10px;border-radius:7px;background:#f8fbf9;color:#1d3027;font-size:11px;margin:4px 0 8px;resize:vertical}.mini-scroll label{margin:9px 0 2px;color:#708077;font-size:10px}.mini-scroll .muted{font-size:10px;color:#718178;line-height:1.6;margin:5px 0}.mini-scroll .notice{background:#e7f7f0;border-left:3px solid #087f5b;padding:10px;font-size:10px;margin-bottom:12px;color:#35614e}.mini-scroll details{background:white;border:1px solid #e0ebe5;border-radius:10px;margin-bottom:10px;padding:12px;font-size:11px}.mini-scroll summary{font-weight:600;font-size:12px;cursor:pointer}.mini-scroll .mgrid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.mini-scroll .mmetric{padding:8px 0;display:flex;flex-direction:column}.mini-scroll .mmetric strong{font-size:23px;color:#087f5b}.mini-scroll .mmetric small{font-size:10px;color:#718178}.mini-scroll .mtag{font-size:9px;background:#e7f7f0;color:#087f5b;padding:3px 6px;border-radius:8px}.mini-scroll .mhero .mtag{background:#ffffff25;color:white}.home-indicator{height:4px;width:90px;background:#243a30;border-radius:4px;align-self:center;margin:8px 0;flex-shrink:0}.phone-caption{font-size:10px;color:#61786a;text-align:center;max-width:370px;margin:14px auto 0}.source-note{font-size:10px;color:#647b6d;max-width:370px;margin:10px auto}.source-note summary{cursor:pointer}.source-note p{font-size:10px;overflow-wrap:anywhere}.handover-inline{margin-top:20px;display:grid;grid-template-columns:1fr;gap:10px}.handover-inline #evidence{min-height:0;margin:0}.handover-inline #evidence p{font-size:11px;margin:5px 0;border-left:2px solid #bad37d;padding-left:10px}.handover-inline .boundary{margin:0;padding-top:10px}.handover-inline .boundary p{font-size:10px}.stage .action-card{min-height:0;padding:22px}.stage .action-card h3{font-size:22px}.stage .action-card .primary{font-size:12px}.nav-actions span{max-width:125px;font-size:9px}.mini-toast{background:#17402fe8;color:#fff;padding:10px 15px;font-size:11px;border-radius:8px;position:absolute;bottom:30px;left:20px;right:20px;text-align:center;z-index:5}#miniDialog:not([hidden]){position:absolute;inset:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:8;padding:25px}.mini-modal{background:white;border-radius:15px;padding:23px;width:100%;font-size:12px}.mini-modal h4{margin:0 0 10px;font-size:15px}.mini-modal p{font-size:12px}.mini-modal button{padding:10px;border:0;border-radius:6px;background:#087f5b;color:white;margin:8px 4px 0 0}.mini-modal button:first-of-type{background:#edf2ed;color:#355344}@media(max-width:1150px){.demo{grid-template-columns:.8fr 1fr 1.1fr}.demo>aside,.stage{padding:17px}.phone{height:660px}.mini-brand strong{font-size:14px}.phone-label{display:block}.phone-label small{display:block}}@media(max-width:950px){.demo{grid-template-columns:1fr 1.1fr}.demo>aside:first-child{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr;gap:5px 25px}.demo>aside:first-child .eyebrow,.demo>aside:first-child h3,.demo>aside:first-child>p{grid-column:1/-1}.result{grid-column:auto;border-top:0}.phone{height:700px}.mini-brand strong{font-size:16px}}@media(max-width:680px){.demo{display:flex;flex-direction:column}.demo>aside:first-child{display:block}.result{order:2}.stage{order:1}.stage .facts{display:none}.stage .handover-inline{display:none}.phone{max-width:360px;height:720px}.phone-label{display:flex}.nav-actions{margin-bottom:5px}.result{padding:22px!important}.phone-caption{font-size:11px}}

/* Use the viewport for the workflow; give spare width to the middle column. */
main{max-width:none;padding-inline:clamp(18px,2vw,48px)}
.hero,.principles,footer{max-width:1420px;margin-inline:auto}
@media(min-width:1200px){
 .demo{grid-template-columns:clamp(280px,20vw,350px) minmax(0,1fr) clamp(400px,27vw,500px)}
 .demo>aside,.stage{padding:clamp(24px,1.7vw,36px)}
 .stage{min-width:0}
 .action-card{width:100%}
}
@media(max-width:680px){main{padding-inline:16px}}

#tabs{grid-template-columns:repeat(7,minmax(0,1fr))}.domain-link{margin-top:28px;padding-top:18px;border-top:1px solid var(--line)}.domain-link small{font-size:11px;font-weight:600;color:var(--green)}.domain-link p{font-size:12px;line-height:1.9}.mini-title>span{cursor:pointer}.mini-title>span:focus-visible{outline:2px solid var(--green)}@media(max-width:680px){#tabs{grid-template-columns:repeat(3,1fr)}}

/* Three viewport-sized sections with navigation aligned below the header. */
:root{--header-height:72px}
html{scroll-padding-top:var(--header-height);scroll-snap-type:y proximity}
header{position:sticky;top:0;z-index:30;height:var(--header-height);background:var(--paper)}
main{padding-inline:clamp(16px,2vw,48px)}
#home,#explore,.screen-bottom{height:calc(100dvh - var(--header-height));min-height:0;scroll-snap-align:start;scroll-margin-top:0}
#home{padding:32px 0;max-width:1420px;width:100%;margin:auto}
#explore{display:flex;flex-direction:column;padding:14px 0 18px;gap:12px}
#tabs{margin:0;flex-shrink:0}
#tabs button{padding:11px 6px}
.demo{flex:1;min-height:0;height:0}
.demo>aside:first-child,.stage{overflow-y:auto;scrollbar-width:thin}
.demo>aside,.stage{padding:clamp(18px,1.4vw,30px)}
.explore-heading{margin-bottom:24px;border-bottom:1px solid var(--line);padding-bottom:16px}
.explore-heading h2{font-size:clamp(20px,1.55vw,28px);line-height:1.5;margin:8px 0 0}
.result{display:flex;justify-content:center;align-items:center;min-height:0;overflow:hidden}
.phone{height:100%;max-height:800px;max-width:370px;margin:0 auto;flex:none;width:min(100%,calc((100dvh - 180px) * .53))}
.stage #steps{margin:16px 0 20px}.stage .action-card{padding:20px}.stage .handover-inline{margin-top:14px;gap:8px}.stage .boundary{padding-top:8px}.domain-link{margin-top:20px}.demo label{margin-top:20px}.record{margin-top:18px}
.screen-bottom{display:flex;flex-direction:column;justify-content:center;max-width:1420px;margin:auto;overflow:auto}
.screen-bottom .principles{padding:32px 0;align-items:start;width:100%;margin:0}
.screen-bottom footer{width:100%;margin:18px 0 0;padding:24px 0}
header nav a[aria-current=location]{color:var(--green);font-weight:700}
@media(max-width:950px){.demo{grid-template-columns:minmax(220px,.8fr) minmax(0,1fr) minmax(270px,1fr)}.demo>aside:first-child{display:block;grid-column:auto}.result{grid-column:auto}.phone{border-width:5px}.mini-brand strong{font-size:13px}}
@media(max-width:680px){:root{--header-height:66px}header{padding:0 16px}.brand span{font-size:17px}header nav{gap:12px}header nav a{display:inline;font-size:11px}.pill{display:none}#home{overflow-y:auto;gap:18px;padding:20px 0;grid-template-columns:1fr 1fr}h1{font-size:30px}.hero p{font-size:12px}.product-map{padding:12px}.orbit{flex-wrap:wrap}.device{width:100%;padding:12px}.device strong{font-size:12px}#explore{overflow-y:auto}.demo{display:grid;grid-template-columns:1fr;flex:none;height:auto;overflow:visible}.demo>aside:first-child,.stage{overflow:visible}.result{height:650px}.phone{width:100%;height:100%;max-width:330px}.screen-bottom{padding:20px 0;justify-content:flex-start}.screen-bottom .principles{grid-template-columns:1fr 1fr;gap:18px;padding:0}.explore-heading h2 br{display:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
/* Two independent stationary masks, each revealing one rotating spectrum. */
.brand-art{position:relative;width:100%;max-width:640px;aspect-ratio:1;justify-self:center;isolation:isolate}
.logo-fallback{position:absolute;inset:0;width:100%;height:100%;object-fit:contain}
.logo-mask,.logo-wordmark{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.logo-mask{visibility:hidden;mask-size:100% 100%;mask-repeat:no-repeat;-webkit-mask-size:100% 100%;-webkit-mask-repeat:no-repeat;overflow:hidden}
.logo-wordmark{visibility:hidden;object-fit:contain}
.logo-ready .logo-fallback{visibility:hidden}.logo-ready .logo-mask,.logo-ready .logo-wordmark{visibility:visible}
.rainbow-texture{position:absolute;inset:-21%;background:conic-gradient(oklch(72% .16 25),oklch(72% .16 60),oklch(72% .14 100),oklch(72% .16 145),oklch(72% .12 200),oklch(72% .14 255),oklch(72% .16 305),oklch(72% .16 350),oklch(72% .16 25));transform-origin:50% 50%;animation:spectral-turn 16.8s linear infinite;will-change:transform}
.blue-mask .rainbow-texture{animation-duration:25.2s;animation-direction:reverse;animation-delay:-8.4s}
@keyframes spectral-turn{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}
.logo-motion{position:absolute;right:12px;bottom:0;font-size:10px;background:transparent;border:1px solid var(--line);border-radius:18px;color:var(--muted);padding:4px 10px;opacity:0;transition:opacity .2s}
.brand-art:hover .logo-motion,.brand-art:focus-within .logo-motion{opacity:1}
.motion-paused .rainbow-texture{animation-play-state:paused}
@media(prefers-reduced-motion:reduce){.rainbow-texture{animation-play-state:paused}.logo-motion{display:none}}
@media(max-width:680px){.brand-art{min-width:0}.logo-motion{display:none}}

.login-entry{border:1px solid #b7cdc3;background:#e7eddf;color:#006d57;border-radius:20px;padding:7px 16px;font-size:12px;white-space:nowrap}
.login-qr{position:absolute;left:50%;top:43.2%;width:20%;aspect-ratio:1;transform:translate(-50%,-50%);background:white;padding:0;z-index:5;box-shadow:none}
.login-qr img{display:block;width:100%;height:100%;image-rendering:pixelated}
.login-qr[hidden],.login-help[hidden]{display:none}
.login-help{position:absolute;top:98%;left:0;right:0;text-align:center;color:#416257;font-size:11px;z-index:6}
.login-help p{font-size:11px;max-width:none;margin:0 0 6px}
.login-help button{font-size:10px;border:1px solid #cbd9d1;background:white;border-radius:5px;padding:4px 9px;margin:0 4px;color:#006d57}
@media(max-width:680px){header nav .login-entry{font-size:11px;padding:6px 9px}.login-help{font-size:10px}.login-help p{font-size:10px}}