:root{--bg:#111923;--surface:#17222f;--surface-deep:#0d141d;--text:#edf2f7;--muted:#a5b4c5;--subtle:#8296ad;--line:#2b3c4f;--blue:#a8caff;--amber:#edc987;--green:#a0d7bc;--mono:Consolas,'SFMono-Regular',monospace;--sans:'Segoe UI','PingFang SC','Microsoft YaHei',system-ui,sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
button,a{touch-action:manipulation}
button:focus-visible,a:focus-visible{outline:2px solid var(--amber);outline-offset:5px}
[hidden]{display:none!important}
code,pre{font-family:var(--mono)}
::selection{background:var(--blue);color:var(--bg)}
.wrap{width:min(1280px,calc(100% - 72px));margin-inline:auto}
.skip-link{position:absolute;left:15px;top:-80px;z-index:10;padding:12px 18px;background:var(--blue);color:var(--bg)}.skip-link:focus{top:10px}
.site-header{height:70px;border-bottom:1px solid var(--line)}.header-inner{height:100%;display:flex;align-items:center;gap:35px}.brand{display:flex;align-items:center;gap:12px;font:600 18px var(--mono);white-space:nowrap}.brand-arrow{color:var(--blue);padding:0 2px}.brand-icon{display:block;position:relative;width:24px;height:27px;border:1px solid var(--blue);border-radius:2px}.brand-icon:after{content:'';position:absolute;right:-1px;top:-1px;border-bottom:7px solid var(--blue);border-right:7px solid var(--bg)}.brand-icon i{position:absolute;left:5px;right:5px;height:1px;background:var(--blue)}.brand-icon i:nth-child(1){top:10px}.brand-icon i:nth-child(2){top:15px}.brand-icon i:nth-child(3){top:20px;right:9px;background:var(--amber)}.site-header nav{margin-left:auto;display:flex;gap:30px;color:var(--muted);font-size:13px}.site-header nav a:hover,.site-header nav a.is-active{color:var(--blue)}.header-source{border:1px solid #405772;padding:9px 14px;font:12px var(--mono);white-space:nowrap}.header-source:hover{color:var(--bg);background:var(--blue);border-color:var(--blue)}
h1,h2,h3,p{margin-top:0}h1,h2{font-weight:750;line-height:1.15}h3{line-height:1.4}p{line-height:1.9}
.hero{position:relative;overflow:hidden}.hero-grid{position:absolute;inset:0;background:linear-gradient(#26364b55 1px,transparent 1px),linear-gradient(90deg,#26364b55 1px,transparent 1px);background-size:68px 68px;mask-image:linear-gradient(135deg,transparent 20%,#000 90%);pointer-events:none}.hero-inner{position:relative;padding-top:38px}.hero-kicker{display:flex;align-items:center;gap:17px;font:10px var(--mono);letter-spacing:.08em;color:var(--subtle)}.version{color:var(--blue);font:12px var(--mono);border:1px solid #425d80;padding:5px 9px;letter-spacing:0}.hero h1{font-size:clamp(56px,7vw,100px);margin:27px 0 22px;line-height:1.12;letter-spacing:-2px}.hero h1 em{color:var(--blue);font-style:normal}.hero-deck{display:flex;gap:40px;align-items:end;justify-content:space-between}.hero-deck p{color:var(--muted);max-width:675px;font-size:16px;line-height:1.8;margin:0}.hero-deck strong{color:var(--text)}.hero-actions{display:flex;gap:10px;flex:none}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:28px;padding:0 17px;height:46px;font-size:13px;font-weight:600;transition:transform .2s}.button:hover{transform:translateY(-2px)}.primary{background:var(--blue);color:var(--bg)}.secondary{border:1px solid #516986;background:#11192399;color:var(--text)}
.export-scene{display:grid;grid-template-columns:.9fr 130px 1.1fr;align-items:center;position:relative;margin-top:44px;min-width:0}.source-doc,.local-files{height:239px;border:1px solid #3c526d;background:var(--surface);position:relative;min-width:0;overflow:hidden}.scene-top{height:37px;display:flex;align-items:center;gap:8px;border-bottom:1px solid #31445a;padding:0 14px;font:9px var(--mono);letter-spacing:.04em;color:var(--subtle);white-space:nowrap}.tiny-dot{width:5px;height:5px;background:var(--blue);border-radius:50%}.tiny-dot.amber{background:var(--amber)}.scene-tag{margin-left:auto;color:var(--muted);letter-spacing:0}.doc-lines{position:relative;padding:17px 23px}.doc-caption{color:#8096b1;font-size:9px;display:block;margin-bottom:9px}.doc-lines strong{font-size:19px;display:block}.doc-heading{width:35px;height:3px;background:var(--blue);margin:12px 0}.doc-text-line{height:3px;margin-top:7px;width:90%;background:#4b5e76}.doc-text-line.short{width:62%}.doc-media{position:absolute;right:23px;top:21px;width:115px;height:80px;overflow:hidden;border:1px solid #486787;background:#263c53}.doc-media>span:last-child{position:absolute;right:7px;bottom:5px;font:8px var(--mono);color:var(--blue)}.media-mountain{position:absolute;top:36px;left:22px;width:70px;height:70px;background:#6589a9;transform:rotate(45deg)}.media-sun{width:13px;height:13px;position:absolute;top:17px;right:24px;background:var(--amber);border-radius:50%}.doc-lines .doc-text-line:last-child{margin-top:23px;width:83%}.export-route{text-align:center;font-family:var(--mono)}.route-caption{color:var(--blue);font-size:12px}.route-line{height:1px;background:#6183aa;margin:15px 0 13px;position:relative}.route-line i{position:absolute;width:7px;height:7px;top:-3px;background:var(--blue);animation:parcel 3s linear infinite}.route-line b{position:absolute;right:0;top:-11px;font-size:17px;color:var(--blue);font-weight:400}.route-sub{font-family:var(--sans);font-size:10px;color:var(--subtle)}@keyframes parcel{from{left:0;opacity:0}15%{opacity:1}85%{opacity:1}to{left:95%;opacity:0}}.file-tree{padding:19px 21px 12px}.tree-folder{display:flex;gap:9px;align-items:center;font:12px var(--mono);margin-bottom:13px}.tree-folder strong{font-weight:500}.folder-icon{width:15px;height:11px;background:var(--amber);position:relative;border-radius:1px}.folder-icon:before{content:'';position:absolute;left:0;top:-3px;width:6px;height:4px;background:var(--amber)}.tree-file{display:flex;align-items:center;gap:10px;height:33px;color:#c4d2e2;font:11px var(--mono);white-space:nowrap}.file-extension{font:8px var(--mono);width:26px;height:17px;display:grid;place-items:center;border:1px solid #617b9f;color:var(--blue);flex:none}.file-extension.img{color:var(--amber);border-color:#917957}.file-extension.json{color:var(--green);border-color:#4e7a68}.file-note{margin-left:auto;color:var(--subtle);font:10px var(--sans)}.file-status{border-top:1px solid #31445a;padding:10px 21px;display:flex;align-items:center;justify-content:space-between;color:var(--subtle);font-size:10px}.status-square{width:5px;height:5px;background:var(--green)}.hero-foot{display:flex;justify-content:space-between;gap:15px;color:var(--subtle);font:9px var(--mono);letter-spacing:.04em;margin:25px 0 31px}.hero-foot span:last-child{color:var(--blue)}
.section{padding:85px 0;border-top:1px solid var(--line);scroll-margin-top:20px}.section-label{display:flex;align-items:center;gap:20px;font:10px var(--mono);letter-spacing:.05em;color:var(--blue);margin-bottom:37px}.section-label i{height:1px;background:var(--line);flex:1}.label-note{color:var(--subtle);font:10px var(--sans);letter-spacing:0;white-space:nowrap}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:60px;margin-bottom:42px}.section h2{font-size:clamp(34px,4vw,56px);margin:0;letter-spacing:-1px}.section-heading p{max-width:380px;color:var(--muted);font-size:14px;margin:0}.section code:not(pre code){font:12px var(--mono);color:var(--blue)}.mode-tabs{display:grid;grid-template-columns:repeat(3,1fr);border-bottom:1px solid #3f5672}.mode-tabs button{position:relative;background:transparent;border:0;color:var(--muted);text-align:left;padding:22px 21px 23px;border-top:1px solid var(--line)}.mode-tabs button+button{border-left:1px solid var(--line)}.mode-tabs button[aria-selected=true]{background:var(--surface);color:var(--text)}.mode-tabs button[aria-selected=true]:after{content:'';position:absolute;bottom:-1px;left:0;right:0;height:2px;background:var(--blue)}.mode-tabs button>span{font:10px var(--mono);color:var(--subtle);display:block;margin-bottom:10px}.mode-tabs strong{font-size:18px;display:block;font-weight:600}.mode-tabs small{display:block;font-size:12px;color:var(--subtle);margin-top:6px}.mode-panel{display:grid;grid-template-columns:.82fr 1.18fr;gap:60px;padding:38px 0 0;align-items:start}.mode-copy h3{font-size:22px;margin:0 0 13px}.mode-copy p{color:var(--muted);font-size:14px;margin-bottom:14px}.mode-copy .mode-hint{font-size:12px;color:var(--subtle)}.text-link{color:var(--blue);display:inline-flex;gap:10px;align-items:center;border-bottom:1px solid #536d92;font-size:12px;padding-bottom:5px;white-space:nowrap}.text-link:hover{color:#d6e7ff}.code-box{background:var(--surface-deep);border:1px solid #30445e;min-width:0}.code-head{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:9px 15px;min-height:43px;border-bottom:1px solid #263950;color:var(--subtle);font:10px var(--mono)}.code-head button{background:transparent;border:1px solid #4c688e;color:var(--blue);font-size:11px;padding:5px 10px;min-width:54px;flex:none}.code-head button:hover{background:#223754}.code-box pre{margin:0;padding:19px 18px 22px;font-size:12px;line-height:1.85;overflow:auto;color:#c4d9f6}.prompt-box pre{white-space:pre-wrap;word-break:break-word;line-height:1.85;font-size:12px}.code-note{border-top:1px solid #263950;padding:13px 18px;margin:0;color:var(--subtle);font-size:11px;line-height:1.8}
.capability-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:45px}.capability-grid article{padding:26px 22px 29px 0;min-width:0}.capability-grid article+article{border-left:1px solid var(--line);padding-left:25px}.cap-number{display:block;font:10px var(--mono);color:var(--blue);margin-bottom:25px}.capability-grid h3{font-size:18px;margin-bottom:12px}.capability-grid p{color:var(--muted);font-size:12px;line-height:1.85;margin-bottom:20px}.capability-grid article>code{font-size:10px!important;color:var(--subtle)!important;overflow-wrap:anywhere}.format-table{margin-top:48px;overflow-x:auto}.table-title{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:20px}.table-title h3{font-size:18px;margin:0}.table-title>span{color:var(--subtle);font-size:10px}.format-table table{width:100%;border-collapse:collapse;text-align:left;font-size:12px;min-width:610px}.format-table th,.format-table td{padding:15px 16px;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.7}.format-table thead{background:var(--surface);font:10px var(--mono);color:var(--subtle)}.format-table th{font-weight:500}.format-table th:first-child{padding-left:13px;width:16%}.format-table td:nth-child(2){width:25%;color:var(--blue)}.format-table td:last-child{color:var(--muted)}
.access-heading{display:flex;gap:27px;align-items:start;margin-bottom:35px}.access-mark{font:38px var(--mono);width:61px;height:61px;border:1px solid #796845;color:var(--amber);display:grid;place-items:center;flex:none}.access-heading h2{margin-bottom:18px}.access-heading p{max-width:750px;color:var(--muted);font-size:14px;margin:0}.access-heading strong{color:var(--text)}.access-steps{display:grid;grid-template-columns:repeat(3,1fr);padding:0;list-style:none;border-top:1px solid #5e5542;border-bottom:1px solid #5e5542;margin:0}.access-steps li{padding:25px 25px 25px 0}.access-steps li+li{border-left:1px solid var(--line);padding-left:27px}.access-steps li>span{font:10px var(--mono);color:var(--amber);display:block;margin-bottom:16px}.access-steps h3{font-size:17px;margin-bottom:13px}.access-steps p{font-size:12px;color:var(--muted);margin-bottom:18px;line-height:1.85}.access-steps li>code{color:var(--amber)!important;font-size:11px!important}.identity-note{display:grid;grid-template-columns:1.18fr .82fr;gap:65px;margin-top:27px}.identity-note strong{color:var(--amber);font-size:14px;font-weight:600}.identity-note p{color:var(--subtle);font-size:12px;margin:10px 0 0;line-height:1.85}
.setup-grid{display:grid;grid-template-columns:1fr 1fr;gap:25px}.step-title{display:flex;align-items:baseline;gap:16px;margin-bottom:17px}.step-title span{font:10px var(--mono);color:var(--blue)}.step-title h3{margin:0;font-size:17px}.setup-note{color:var(--subtle);font-size:12px;margin:22px 0 0;line-height:1.9;max-width:1010px}.download-examples{margin-top:43px;border-top:1px solid var(--line);padding-top:25px}.examples-head{display:flex;align-items:center;gap:30px;justify-content:space-between;margin-bottom:20px}.examples-head h3{margin:0;font-size:18px}.example-tabs{display:flex;gap:4px}.example-tabs button{border:1px solid var(--line);color:var(--subtle);background:transparent;font-size:12px;padding:8px 18px}.example-tabs button[aria-selected=true]{border-color:var(--blue);color:var(--blue);background:#223754}.example-note{color:var(--subtle);font-size:12px;margin:14px 0 0;line-height:1.9}
.output-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:75px;align-items:start}.section-label.compact{margin-bottom:27px}.output p{color:var(--muted);font-size:13px;max-width:425px;margin:23px 0}.status-legend{display:flex;gap:16px;flex-wrap:wrap;font:10px var(--mono);color:var(--subtle)}.status-legend span{display:flex;align-items:center;gap:6px}.status-legend i{width:5px;height:5px;display:inline-block}.ok{background:var(--green)}.partial{background:var(--amber)}.failed{background:#e69595}.unsupported{background:var(--subtle)}.output .output-hint{font-size:11px;color:var(--subtle);margin-bottom:0}.archive-tree{border:1px solid #3d526e;background:var(--surface-deep);min-width:0}.archive-tree pre{margin:0;padding:25px 22px;font-size:12px;line-height:2;color:#a7bad0;overflow:auto}.archive-tree small{font-size:10px;color:var(--subtle)}.tree-root{color:var(--amber)}.tree-highlight{color:var(--blue)}
.version-section{border-top:1px solid var(--line);padding:39px 0}.version-layout{display:flex;align-items:center;gap:40px}.release-number{font:36px var(--mono);color:var(--blue);flex:none}.eyebrow{font:9px var(--mono);color:var(--subtle);letter-spacing:.04em}.version-layout h2{font-size:21px;margin:9px 0 8px;line-height:1.4}.version-layout p{color:var(--muted);font-size:12px;margin:0;max-width:640px}.version-layout>a{margin-left:auto;flex:none}
footer{border-top:1px solid var(--line);padding:39px 0 42px}.footer-inner{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:30px;align-items:start}.footer-brand{font:18px var(--mono);color:var(--blue)}footer p{font-size:11px;color:var(--subtle);margin:10px 0 0}.footer-links{display:flex;gap:20px;flex-wrap:wrap;font-size:11px}.footer-links a:hover{color:var(--blue)}.footer-credit{font:9px var(--mono);line-height:1.9;text-align:right;color:var(--subtle)}.copy-status{position:fixed;bottom:25px;left:50%;transform:translate(-50%,12px);opacity:0;pointer-events:none;color:var(--text);border:1px solid #536d92;background:#203149;padding:10px 18px;z-index:5;font-size:12px;transition:opacity .2s,transform .2s}.copy-status.visible{opacity:1;transform:translate(-50%,0)}
@media(max-width:1050px){.hero-deck{flex-direction:column;align-items:start;gap:22px}.mode-panel{gap:35px;grid-template-columns:.85fr 1.15fr}.export-scene{grid-template-columns:.9fr 90px 1.1fr}.file-tree{padding-inline:15px}.tree-file{font-size:10px;gap:6px}.file-note{display:none}.capability-grid{grid-template-columns:repeat(2,1fr)}.capability-grid article:nth-child(3){border-left:0;padding-left:0;border-top:1px solid var(--line)}.capability-grid article:nth-child(4){border-top:1px solid var(--line)}.capability-grid article{padding-right:28px}.output-layout{gap:35px}.version-layout{gap:25px}}
@media(max-width:760px){.wrap{width:calc(100% - 36px)}.site-header{height:59px}.brand{font-size:14px;gap:9px}.brand-icon{width:20px;height:23px}.brand-icon i:nth-child(1){top:8px}.brand-icon i:nth-child(2){top:12px}.brand-icon i:nth-child(3){top:16px}.site-header nav{display:none}.header-inner{gap:15px}.header-source{margin-left:auto;font-size:10px;padding:8px 10px}.hero-inner{padding-top:27px}.hero-kicker{font-size:8px;gap:10px}.version{font-size:10px}.hero h1{font-size:clamp(43px,9.5vw,67px);letter-spacing:-1px;margin:23px 0 18px}.hero-deck p{font-size:13px;line-height:1.85}.desktop-break{display:none}.hero-actions{gap:8px}.button{font-size:12px;height:42px;padding:0 13px;gap:19px}.export-scene{grid-template-columns:.8fr 30px 1.2fr;margin-top:30px}.source-doc,.local-files{height:176px}.scene-top{padding:0 8px;font-size:7px;height:29px;gap:5px;letter-spacing:0}.scene-top .scene-tag{display:none}.doc-lines{padding:15px 11px}.doc-caption{font-size:8px;margin-bottom:6px}.doc-lines strong{font-size:13px}.doc-heading{width:22px;margin:9px 0}.doc-text-line{margin-top:6px}.doc-media{position:relative;right:auto;top:auto;width:100%;height:36px;margin-top:10px}.media-mountain{width:39px;height:39px;top:19px;left:18px}.media-sun{width:7px;height:7px;top:7px;right:17px}.doc-media>span:last-child{font-size:6px}.doc-lines .doc-text-line:last-child{display:none}.route-caption,.route-sub{display:none}.file-tree{padding:17px 9px 8px}.tree-folder{font-size:9px;gap:6px;margin-bottom:10px;line-height:1.5}.folder-icon{width:12px;height:9px;flex:none}.tree-file{font-size:9px;gap:5px;height:26px;white-space:normal;overflow-wrap:anywhere}.file-extension{width:20px;height:15px;font-size:6px}.file-status{padding:7px 9px;font-size:8px}.hero-foot{font-size:7px;line-height:1.6;margin:20px 0 24px}.hero-foot span:last-child{max-width:140px;text-align:right}.section{padding:59px 0}.section-label{font-size:9px;gap:12px;margin-bottom:27px}.label-note{font-size:8px}.section-heading{display:block;margin-bottom:29px}.section h2{font-size:36px;letter-spacing:-.5px}.section-heading p{font-size:13px;margin-top:20px;max-width:100%}.mode-tabs button{padding:17px 10px}.mode-tabs strong{font-size:13px}.mode-tabs small{font-size:9px;line-height:1.6}.mode-tabs button>span{font-size:9px;margin-bottom:8px}.mode-panel{grid-template-columns:1fr;gap:24px;padding-top:27px}.mode-copy h3{font-size:20px}.mode-copy p{font-size:13px}.code-head{padding-inline:11px;font-size:9px;gap:10px}.code-box pre{padding:16px 13px;font-size:11px}.prompt-box pre{font-size:11px}.capability-grid{margin-top:30px}.capability-grid article{padding:22px 15px 23px 0}.capability-grid article+article{padding-left:17px}.capability-grid article:nth-child(3){padding-left:0}.cap-number{margin-bottom:18px}.capability-grid h3{font-size:16px}.capability-grid p{font-size:11px;margin-bottom:15px}.format-table{margin-top:30px}.table-title h3{font-size:15px}.table-title>span{display:none}.format-table th,.format-table td{padding:13px 12px}.access-heading{gap:15px;margin-bottom:27px}.access-mark{width:42px;height:42px;font-size:27px}.access-heading h2{font-size:32px;margin-bottom:14px}.access-heading p{font-size:12px}.access-steps{grid-template-columns:1fr}.access-steps li,.access-steps li+li{padding:22px 0;border-left:0;display:grid;grid-template-columns:30px 1fr;gap:0 15px}.access-steps li+li{border-top:1px solid var(--line)}.access-steps li>span{margin:5px 0 0;grid-row:1/4}.access-steps h3{font-size:16px;margin-bottom:9px}.access-steps p{font-size:12px;margin-bottom:11px}.identity-note{grid-template-columns:1fr;gap:23px}.setup-grid{grid-template-columns:1fr;gap:26px}.step-title h3{font-size:16px}.setup-note{font-size:11px}.download-examples{margin-top:31px}.examples-head{gap:15px}.examples-head h3{font-size:15px}.example-tabs button{padding:7px 12px;font-size:11px}.output-layout{grid-template-columns:1fr;gap:27px}.output p{max-width:100%;font-size:12px}.archive-tree pre{font-size:11px;padding:21px 14px}.archive-tree small{font-size:9px}.version-section{padding:29px 0}.version-layout{display:grid;grid-template-columns:1fr;gap:16px}.release-number{font-size:30px}.version-layout>a{margin:0;justify-self:start}.footer-inner{grid-template-columns:1fr 1fr;gap:25px}.footer-credit{grid-column:1/-1;text-align:left}.footer-links{gap:10px;flex-direction:column;align-items:end}.footer-brand{font-size:16px}footer p{font-size:10px}.copy-status{bottom:18px;max-width:90vw;white-space:nowrap;font-size:11px}}
@media(max-width:400px){.label-note{display:none}.hero-kicker{font-size:7px}.hero-foot span:first-child{max-width:170px}.file-tree{padding-inline:7px}.tree-file{font-size:8px}.tree-folder{font-size:8px}.file-status{font-size:7px}.scene-top{font-size:6px}.hero-actions .button{gap:15px}.access-heading{gap:10px}.access-heading h2{font-size:29px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.route-line i{animation:none}.button,.copy-status{transition:none}}