:root{--ink:#163c51;--muted:#647480;--teal:#126eae;--mint:#e8f1f6;--line:#dce3e6;--paper:#ffffff;--white:#ffffff;--orange:#b56e34}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,"Microsoft YaHei","PingFang SC",sans-serif;-webkit-font-smoothing:antialiased}button,input{font:inherit}button,a,input{touch-action:manipulation}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #d18b37;outline-offset:4px}button:disabled{opacity:.35;cursor:default}button{color:inherit}a{color:inherit}svg{display:block}button svg{width:19px;height:19px;flex:none}p,h1,h2,h3{margin:0}button{border:0;background:none}main,.masthead,.footer{max-width:1480px;margin:auto;padding-left:52px;padding-right:52px}.masthead{height:86px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{text-decoration:none;font-size:29px;font-weight:850;letter-spacing:-1.5px;display:flex;align-items:baseline;gap:14px}.brand sup{font-size:10px;letter-spacing:0;position:relative;left:-12px;top:-12px}.brand span{font-size:11px;font-weight:500;letter-spacing:1.4px;color:var(--muted);margin-left:-14px}.mast-right{display:flex;gap:30px;align-items:center;font-size:12px}.prototype{display:flex;align-items:center;gap:7px;color:var(--muted)}.dot{width:6px;height:6px;background:var(--teal);border-radius:50%;display:inline-block}.intro{padding:37px 0 30px;display:flex;justify-content:space-between;gap:40px;align-items:flex-end}.eyebrow{font-size:10px;letter-spacing:2px;text-transform:uppercase;font-weight:650;color:var(--teal);display:flex;align-items:center;gap:10px}.eyebrow:before{content:"";width:25px;height:1px;background:var(--teal)}h1{font-size:clamp(35px,3.7vw,56px);line-height:1.06;letter-spacing:-2px;font-weight:520;margin-top:14px}h1 em{font-family:Georgia,"Times New Roman",serif;font-weight:400;color:var(--teal)}.intro-copy{max-width:345px;padding-bottom:3px}.intro-copy p{font-size:13px;line-height:1.9;color:var(--muted)}.intro-copy 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0;display:flex;justify-content:space-between;align-items:flex-start;gap:12px;z-index:1}.scene-heading{font-size:11px;color:var(--muted);line-height:1.5}.scene-heading strong{display:block;font-size:18px;color:var(--ink);font-weight:550;margin-top:3px;letter-spacing:-.3px}.toggle{border:1px solid #bdcec4;background:#ffffff6b;border-radius:20px;padding:7px 10px;display:flex;align-items:center;gap:6px;font-size:10px;white-space:nowrap}.toggle[aria-pressed="true"]{color:var(--teal);background:#ffffff}.toggle svg{width:14px;height:14px}#scene{width:100%;height:auto;min-height:240px;max-height:375px;flex:1;font-family:"Segoe UI","Microsoft YaHei",sans-serif}.annotation{transition:opacity .15s}.annotations-hidden .annotation{opacity:0}.scene-foot{margin:0 25px 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small{font-size:9px;letter-spacing:1.3px;color:var(--muted);text-transform:uppercase;display:block;margin-top:5px}.purpose{font-size:12px;color:var(--muted);line-height:1.8;margin-bottom:19px}.detail-row{display:grid;grid-template-columns:57px 1fr;gap:12px;margin:14px 0}.detail-label{font-size:12px;font-weight:600;padding-top:2px}.detail-label small{display:block;font-size:8px;letter-spacing:1.4px;color:var(--muted);font-weight:450;margin-top:4px}.detail-content{font-size:12px;line-height:1.8}.chips{display:flex;flex-wrap:wrap;gap:5px}.chip{border:1px solid #dce3dc;padding:3px 7px;border-radius:3px;font-size:10px;line-height:1.5;background:#f8f9f9}.resources{font-size:10px;line-height:1.8;color:var(--muted);margin-top:7px}.process-text{margin:0;padding:0;list-style:none;counter-reset:process}.process-text li{position:relative;padding-left:15px;margin:2px 0}.process-text 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4px);top:-5px;width:8px;height:8px;background:var(--ink);transform:rotate(45deg)}.afterword{border-top:1px solid var(--line);padding:27px 0 30px;display:grid;grid-template-columns:1.05fr 2fr;gap:50px}.afterword h3{font-size:19px;line-height:1.6;font-weight:500;letter-spacing:-.4px}.afterword h3 span{color:var(--teal)}.boundary{display:grid;grid-template-columns:1fr 1fr;gap:35px}.boundary h4{font-size:11px;font-weight:600;margin:0 0 7px}.boundary p{font-size:10px;color:var(--muted);line-height:1.9}.footer{padding-top:18px;padding-bottom:25px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;font-size:9px;color:var(--muted);line-height:1.7}.footer span:last-child{text-align:right}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.reduced-note{font-size:10px;color:var(--muted);margin-top:5px}.reduced-note:empty{display:none}noscript{display:block;padding:24px;font-size:14px}
@media(min-width:1550px){.intro{padding-top:45px;padding-bottom:36px}.details{padding:27px 32px}.detail-row{margin:19px 0}#scene{max-height:405px}.step{padding:16px 12px}.step-name{font-size:12px}}
@media(max-width:1100px){main,.masthead,.footer{padding-left:28px;padding-right:28px}.intro-copy{max-width:290px}.workbench{grid-template-columns:minmax(0,1.2fr) minmax(320px,1fr)}.details{padding:21px}.scene-top{padding-left:20px;padding-right:20px}.scene-foot,.transformation{margin-left:20px;margin-right:20px}.controls{gap:12px}.step{padding:12px 7px}.step-en{font-size:7px}.nav-controls button span{display:none}.afterword{gap:25px}}
@media(max-width:800px){.masthead{height:70px}.mast-right>a{display:none}.brand span{font-size:9px}.intro{padding:29px 0 25px;gap:20px}.intro-copy{max-width:230px}.intro-copy p{font-size:11px}.intro-copy strong{font-size:12px}h1{font-size:38px}.workbench{grid-template-columns:1fr}.visual{border-right:0;border-bottom:1px solid var(--line)}#scene{height:340px;max-height:none;min-height:0;flex:none}.details{min-height:0;padding:23px 25px;display:grid;grid-template-columns:1fr 1fr;gap:0 25px}.detail-title,.purpose,.check{grid-column:1/-1}.purpose{margin-bottom:5px}.detail-row{grid-template-columns:48px 1fr;margin:12px 0}.detail-row.output-row{grid-column:1/-1}.check{margin-top:5px}.steps{grid-template-columns:repeat(4,1fr);gap:8px}.step{padding:12px}.step-en{font-size:9px}.step-top{margin-bottom:8px}.step-name{font-size:12px}.afterword{grid-template-columns:1fr;gap:17px}.afterword h3 br{display:none}.afterword h3{font-size:17px}}
@media(max-width:520px){main,.masthead,.footer{padding-left:18px;padding-right:18px}.brand{font-size:26px}.brand span{display:none}.mast-right{font-size:10px}.intro{display:block}.intro h1{font-size:38px;letter-spacing:-1.4px}.intro-copy{max-width:none;margin-top:17px}.intro-copy strong{display:none}.intro-copy p{font-size:12px;max-width:320px}.route-note{font-size:9px}.explorer-top{padding:13px 15px;font-size:9px}.explorer-top .left{gap:7px}.pill{font-size:9px}.explorer-top .context{display:none}.scene-top{padding:17px 16px 0}.scene-heading strong{font-size:16px}.toggle{font-size:9px;padding:6px 8px}#scene{height:auto;aspect-ratio:680/365;width:100%;min-height:210px}.scene-foot{margin:0 16px 12px;align-items:flex-start;flex-direction:column;gap:5px}.scene-disclaimer{font-size:8px}.transformation{margin:0 16px;padding:12px 0;gap:5px}.state{gap:6px}.state svg{width:36px}.state strong{font-size:10px}.state small{font-size:8px}.details{padding:20px 17px;display:block}.detail-title h2{font-size:21px}.purpose{margin-bottom:15px}.detail-row{grid-template-columns:43px 1fr;gap:10px;margin:16px 0}.check{padding-top:11px}.controls{padding:13px 14px;flex-wrap:wrap;gap:12px}.play{padding:10px 12px;min-width:110px}.playback{order:3;flex-basis:100%;gap:10px}.progress-wrap label{font-size:9px}.nav-controls{margin-left:auto}.nav-controls button{padding:9px}.nav-controls button span{display:inline}.steps{margin:16px 0 25px;gap:6px}.step{padding:10px 8px}.step svg{width:20px;height:20px}.step-name{font-size:10px}.step-en{font-size:7px}.step-top{margin-bottom:9px}.boundary{grid-template-columns:1fr;gap:17px}.afterword{padding-top:22px}.footer{flex-direction:column;gap:6px;font-size:8px}.footer span:last-child{text-align:left}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
@media(max-width:800px){.explorer{display:flex;flex-direction:column}.explorer-top{order:0}.workbench{display:contents}.visual{order:1}.controls{order:2}.details{order:3;border-top:1px solid var(--line)}}
.steps{grid-template-columns:repeat(11,minmax(0,1fr))}.phase-controls{display:flex;flex-wrap:wrap;gap:6px;margin:0 25px 15px}.phase-controls[hidden]{display:none}.phase-controls button{padding:6px 9px;border:1px solid #bbd0c3;border-radius:4px;font-size:10px;background:#ffffff80}.phase-controls button[aria-current="step"]{background:var(--teal);color:white;border-color:var(--teal)}
@media(max-width:1100px){.steps{grid-template-columns:repeat(5,minmax(0,1fr))}}@media(max-width:520px){.steps{grid-template-columns:repeat(4,minmax(0,1fr))}.phase-controls{margin:0 16px 12px;gap:5px}.phase-controls button{font-size:9px;padding:6px 7px}}
.equipment-link{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 12px;margin-top:10px;border:1px solid #d4dfe5;border-radius:5px;background:#f3f6f8;color:#23536e;text-decoration:none}.equipment-link[hidden]{display:none}.equipment-link:not(.equipment-placeholder):hover{background:#e8f1f7;border-color:#7da8c5}.equipment-link small{display:block;font-size:9px;font-weight:400;color:#647480;margin-bottom:2px}.equipment-link strong{font-size:12px;font-weight:600}.equipment-link svg{width:17px;height:17px;flex:none}.equipment-placeholder{border-style:dashed;background:#f3f5f4}.equipment-placeholder>span:last-child{font-size:10px;color:#647480}
.intro h1{line-height:1.22;letter-spacing:-1px;font-weight:600}.intro h1 em{font-family:inherit;font-style:normal;font-weight:500}.mast-right a{text-decoration:none}.mast-right a:hover,.footer a:hover{color:var(--teal)}.mast-right .contact-link{padding:10px 14px;border:1px solid #b8c9d3;border-radius:5px;display:block}.project-cta{display:flex;align-items:center;justify-content:space-between;gap:24px;background:var(--ink);color:var(--white);padding:28px 32px;border-radius:10px;margin-bottom:30px}.project-cta h2{font-size:23px;font-weight:550}.project-cta p{font-size:12px;line-height:1.8;color:#d7e3ea;margin-top:8px}.project-cta a{flex:none;text-decoration:none;background:#e8f1f6;color:var(--ink);padding:13px 19px;border-radius:5px;font-size:13px}.footer nav{display:flex;gap:22px}.footer a{text-decoration:none}.skip-link{position:absolute;left:16px;top:-100px;z-index:10;background:white;padding:12px}.skip-link:focus{top:8px}.equipment-placeholder{border-style:solid}.step-name{font-size:12px}@media(max-width:520px){.project-cta{align-items:flex-start;flex-direction:column;padding:24px}.project-cta h2{font-size:21px}.mast-right .contact-link{padding:9px 11px}.step-name{font-size:10px}.intro h1{font-size:39px}.footer nav{gap:18px}}

/* Keep reference-heavy stages balanced, with readable checks below both columns. */
.compact-details .equipment-group{margin-top:8px;padding:2px 10px;border:1px solid #d4dfe5;border-radius:5px;background:#f3f6f8}
.compact-details .equipment-link{min-height:34px;margin:0;padding:6px 0;border:0;border-radius:0;background:transparent;gap:8px}
.compact-details .equipment-link small{display:none}
.compact-details .equipment-link strong{font-size:11px;line-height:1.5}
.compact-details .equipment-link svg{width:15px;height:15px}
.compact-details>.check{grid-column:1/-1;margin:0;padding:14px 25px;display:grid;grid-template-columns:76px minmax(0,1fr);gap:12px;background:#ffffff;font-size:11px;line-height:1.8}
.compact-details>.check strong{align-self:start;margin:0;white-space:nowrap}
.compact-details #quality{white-space:pre-line}
@media(min-width:801px){.compact-details .details{padding-top:21px;padding-bottom:16px}.compact-details .purpose{margin-bottom:12px}.compact-details .detail-row{margin:11px 0}.compact-details .transformation{margin-top:auto}}
@media(max-width:800px){.compact-details .equipment-link{min-height:44px}.compact-details>.check{order:4;padding:15px 25px}}
@media(max-width:520px){.compact-details>.check{display:block;padding:15px 17px}.compact-details>.check strong{display:flex;margin-bottom:5px}.compact-details #quality{display:block}}

/* TOPUX white / cool-grey palette and multilingual controls. */
.process-language{position:relative;font-size:12px;flex:none}.process-language summary{cursor:pointer;padding:10px;border:1px solid var(--line);border-radius:5px}.process-language nav{position:absolute;inset-inline-end:0;top:100%;z-index:20;background:#fff;border:1px solid var(--line);box-shadow:0 8px 20px #163c5115;min-width:140px;padding:6px}.process-language a{display:block;padding:9px 12px!important;white-space:nowrap}.process-language a[aria-current]{background:#eef3f6;font-weight:600}
html:not([lang="zh-CN"]) .intro h1{font-size:clamp(35px,4.8vw,65px);line-height:1.13;letter-spacing:-1.4px}
html:not([lang="zh-CN"]) .mast-right{flex-wrap:wrap;gap:15px}html:not([lang="zh-CN"]) .scene-title{line-height:1.4}html:not([lang="zh-CN"]) .step-name{font-size:11px;line-height:1.5;overflow-wrap:anywhere}
html:not([lang="zh-CN"]) .phase-label{min-height:35px;line-height:1.6}html:not([lang="zh-CN"]) .transformation{grid-template-columns:minmax(0,1fr) 25px minmax(0,1fr)}html:not([lang="zh-CN"]) .transformation strong{font-size:11px;overflow-wrap:anywhere}html:not([lang="zh-CN"]) .transformation svg{flex:none}
html:not([lang="zh-CN"]) .detail-row{grid-template-columns:76px minmax(0,1fr)}html:not([lang="zh-CN"]) .workbench{grid-template-columns:minmax(0,1.15fr) minmax(0,1fr)}html:not([lang="zh-CN"]) .details h2{font-size:25px;line-height:1.3}html:not([lang="zh-CN"]) .compact-details>.check{grid-template-columns:110px minmax(0,1fr)}html:not([lang="zh-CN"]) .compact-details>.check strong{white-space:normal}
[dir="rtl"] .detail-content,[dir="rtl"] .purpose{font-size:13px}[dir="rtl"] input[type="range"]{background:linear-gradient(to left,var(--teal) 0%,var(--teal) var(--progress,0%),#dce3e6 var(--progress,0%),#dce3e6 100%)}[dir="rtl"] .state-arrow{transform:scaleX(-1)}[dir="rtl"] .details,[dir="rtl"] .check{text-align:right}[dir="rtl"] .workbench{direction:rtl}[dir="rtl"] #scene{direction:ltr}[dir="rtl"] .process-text li{padding-left:0;padding-right:20px}[dir="rtl"] .process-text li:before{left:auto;right:0}[dir="rtl"] .output-text{border-left:0;border-right:2px solid #9bb8c9}[dir="rtl"] .process-language nav{text-align:right}[dir="rtl"] .project-cta svg,[dir="rtl"] #prev svg,[dir="rtl"] #next svg{transform:scaleX(-1)}
html[lang="hi"] body,html[lang="hi"] #scene{font-family:"Nirmala UI",Arial,sans-serif}
@media(max-width:1100px){html:not([lang="zh-CN"]) .workbench{grid-template-columns:1fr}html:not([lang="zh-CN"]) .visual{border-right:0}html:not([lang="zh-CN"]) .details{border-top:1px solid var(--line)}}
@media(max-width:800px){.mast{gap:15px}.mast-right{gap:10px;flex-wrap:wrap;justify-content:flex-end}.process-language{font-size:11px}html:not([lang="zh-CN"]) .compact-details>.check{display:block}html:not([lang="zh-CN"]) .compact-details>.check strong{display:flex;margin-bottom:7px}}
@media(max-width:520px){html:not([lang="zh-CN"]) .mast-right>a:not(.contact-link){display:none}.mast-right{gap:7px}html:not([lang="zh-CN"]) .detail-row{grid-template-columns:1fr;gap:6px}html:not([lang="zh-CN"]) .step-name{font-size:10px}.process-language summary{padding:8px}html:not([lang="zh-CN"]) .phase-controls button{font-size:10px;line-height:1.5}.transformation{gap:8px}html:not([lang="zh-CN"]) .transformation svg{width:40px}html:not([lang="zh-CN"]) .transformation .state{flex-direction:column;align-items:flex-start;gap:5px}html:not([lang="zh-CN"]) .transformation strong{overflow-wrap:normal;hyphens:auto}.project-cta a{white-space:normal}}