:root{--bg:#f7f6f2;--text:#14161f;--accent:#e5336d;--primary:#2640ff;--primary-dk:#1a2fc4;--surface:#ffffff;--muted:#3e4357;--line:#d9d8d0;--soft:#e9ecff;--mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;--hf:"Bricolage Grotesque",system-ui,sans-serif;--bf:"IBM Plex Sans",system-ui,sans-serif;--hh:64px}
.intro{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,340px);gap:24px;align-items:center;margin:16px 0}
.art-img{display:block;width:100%;height:auto;border:1.5px solid var(--text);border-radius:10px;background:#fff}
.wide-img{margin:12px 0 18px}
.foot-logo img{display:block;width:120px;height:auto}
@media (max-width:860px){.intro{grid-template-columns:1fr}}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:120px}
body{margin:0;background-color:var(--bg);background-image:radial-gradient(rgba(38,64,255,.14) 1px,transparent 1.2px);background-size:22px 22px;color:var(--text);font:16px/1.6 var(--bf);-webkit-font-smoothing:antialiased}
img,svg{max-width:100%}
a{color:var(--primary);text-underline-offset:3px}
a:hover{color:var(--primary-dk)}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:3px}
h1,h2,h3{font-family:var(--hf);line-height:1.12;margin:0 0 .5em;letter-spacing:-.015em}
h1{font-size:clamp(2rem,4.5vw,3.1rem);font-weight:700}
h2{font-size:clamp(1.4rem,2.6vw,1.9rem);font-weight:700}
h3{font-size:1.15rem;font-weight:600}
p{margin:0 0 1em}
.skip{position:absolute;left:-999px;top:0;background:var(--text);color:#fff;padding:.6em 1em;z-index:100}
.skip:focus{left:8px;top:8px}
.top{position:sticky;top:0;z-index:50;background:rgba(247,246,242,.94);backdrop-filter:blur(6px);border-bottom:1.5px solid var(--text)}
.top-in{display:flex;align-items:center;gap:16px;max-width:1440px;margin:auto;padding:8px 20px}
.logo{display:block;flex:none;width:176px}
.logo img{display:block;width:176px;height:auto}
.search{position:relative;flex:1;max-width:360px;margin-left:auto}
.statusbar{position:fixed;left:0;right:0;bottom:0;z-index:45;display:flex;flex-wrap:wrap;gap:6px 22px;padding:7px 20px;background:var(--text);color:#fff;font:.78rem var(--mono)}
.statusbar span:first-child:before{content:"";display:inline-block;width:9px;height:9px;margin-right:8px;background:var(--accent);transform:rotate(45deg)}
.sb-right{margin-left:auto;color:#d6daf5}
.has-bar .foot{margin-bottom:34px}
.preview-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin:26px 0 0;align-items:start}
.home-head{margin-bottom:6px}
.home-head h1{margin-bottom:.3em}
.panel-top{margin-top:8px;background-image:radial-gradient(rgba(38,64,255,.16) 1px,transparent 1.2px);background-size:16px 16px;background-color:var(--surface)}
.band{margin:22px 0 0}
.band img{display:block;width:100%;height:auto;border:1.5px solid var(--text);border-radius:10px;background:#fff}
.top .logo img{mix-blend-mode:multiply}
.preview-strip figure{margin:0;background:var(--surface);border:1.5px solid var(--text);border-radius:10px;overflow:hidden;position:relative}
.preview-strip img{display:block;width:100%;height:auto}
.preview-strip figcaption{padding:10px 14px;border-top:1.5px solid var(--text);font-size:.9rem}
.preview-strip figcaption a{font-weight:600}
.preview-strip figcaption b{font:600 .78rem var(--mono);color:#a8123f;margin-right:8px}
.sec{border-top:2px dotted var(--primary)}
.sec:before{content:"";position:absolute;left:0;top:-9px;width:14px;height:14px;background:linear-gradient(135deg,#fff 0 50%,var(--primary) 50% 100%);border:1.5px solid var(--text);transform:rotate(45deg) scale(.8)}
.sec:after{content:"";position:absolute;left:18px;top:-9px;width:14px;height:14px;background:linear-gradient(135deg,#fff 0 50%,var(--accent) 50% 100%);border:1.5px solid var(--text);transform:rotate(45deg) scale(.8)}
.hero-split{display:block}
.hero-split .hero-pic{margin:18px 0 0}
.hero-split .hero-pic img{display:block;width:100%;height:auto;border:0;background:transparent;mix-blend-mode:multiply}
.pv-row{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:28px;align-items:center;margin:28px 0 0}
.pv-row.flip{grid-template-columns:minmax(0,1fr) minmax(0,1.3fr)}
.pv-row.flip .pv-img{order:2}
.pv-img{margin:0}
.pv-img img{display:block;width:100%;height:auto;border-radius:6px;mix-blend-mode:multiply}
.pv-row.sm .pv-img img{max-width:360px;margin:auto}
.pv-txt h3{margin-bottom:.3em}
.pv-txt .mono{font:600 .8rem var(--mono);color:#a8123f}
.model-band{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:28px;align-items:center;margin-top:36px;padding-top:28px;border-top:2px dotted var(--primary)}
.model-band img{display:block;width:100%;height:auto;mix-blend-mode:multiply}
.model-band .strip{margin-top:0;grid-template-columns:1fr}
.model-band .strip>section+section{border-left:0;border-top:1.5px dashed var(--muted)}
@media (min-width:980px){.hero-split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:28px;align-items:center}.hero-split .hero-pic{margin:0}}
@media (max-width:760px){.pv-row,.pv-row.flip,.model-band{grid-template-columns:1fr}.pv-row.flip .pv-img{order:0}}
@media (max-width:900px){.preview-strip{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.preview-strip{grid-template-columns:1fr}.sb-right{display:none}}
.search input{width:100%;font:inherit;font-size:.92rem;padding:8px 12px 8px 34px;border:1.5px solid var(--text);background:var(--surface);border-radius:6px;color:var(--text)}
.search:before{content:"/";position:absolute;left:12px;top:7px;font-family:var(--mono);color:var(--muted)}
.results{position:absolute;left:0;right:0;top:calc(100% + 6px);background:var(--surface);border:1.5px solid var(--text);border-radius:6px;list-style:none;margin:0;padding:4px;box-shadow:4px 4px 0 rgba(91,43,214,.2)}
.results[hidden]{display:none}
.results a{display:block;padding:8px 10px;text-decoration:none;color:var(--text);border-radius:4px}
.results a:hover,.results a:focus{background:var(--soft)}
.results small{display:block;color:var(--muted)}
.menu-btn{display:none;font:inherit;font-weight:600;border:1.5px solid var(--text);background:var(--surface);padding:8px 12px;border-radius:6px;cursor:pointer;color:var(--text)}
.shell{display:grid;grid-template-columns:220px minmax(0,1fr) 210px;max-width:1440px;margin:auto}
.side{position:sticky;top:var(--hh);align-self:start;height:calc(100vh - var(--hh));overflow:auto;padding:24px 16px 24px 20px;border-right:1.5px solid var(--text);background:rgba(255,255,255,.55)}
.side h2{font:600 .95rem var(--hf);letter-spacing:0;text-transform:none;color:var(--text);margin:18px 0 6px;padding-bottom:5px;border-bottom:2px dotted var(--primary)}
.side h2:first-child{margin-top:0}
.side ul{list-style:none;margin:0;padding:0}
.side a{display:flex;gap:10px;align-items:baseline;padding:7px 10px;border-radius:6px;color:var(--text);text-decoration:none;font-weight:500;font-size:.95rem}
.side a i{display:none}
.side a:before{content:"";flex:none;width:11px;height:11px;margin-top:3px;background:linear-gradient(135deg,#fff 0 50%,var(--primary) 50% 100%);border:1.5px solid var(--text);transform:rotate(45deg) scale(.85)}
.side a[aria-current=page]:before{background:linear-gradient(135deg,#fff 0 50%,var(--accent) 50% 100%);border-color:#fff}
.side a:hover{background:var(--soft)}
.side a[aria-current=page]{background:var(--primary);color:#fff}
.side a[aria-current=page] i{color:#efe9ff}
.side ul ul{margin:2px 0 6px 18px;border-left:1.5px solid var(--line)}
.side ul ul a{font-size:.86rem;font-weight:400;padding:4px 10px}
.main{padding:36px clamp(18px,4vw,48px) 60px;min-width:0}
.rail{position:sticky;top:var(--hh);align-self:start;padding:36px 20px 20px 0;font-size:.88rem}
.rail h2{font:600 .95rem var(--hf);color:var(--text);margin:0 0 8px}
.rail ol{list-style:none;margin:0;padding:0 0 0 12px;border-left:1.5px solid var(--line)}
.rail a{display:block;padding:4px 0;color:var(--muted);text-decoration:none}
.rail a:hover{color:var(--primary)}
.crumb{font:.85rem var(--bf);color:var(--muted);margin-bottom:10px}
.lead{font-size:1.15rem;color:var(--muted);max-width:62ch}
.sec{padding-top:36px;margin-top:36px;border-top:1.5px solid var(--text);position:relative}
.sec>.num{display:inline-block;font:600 .82rem var(--mono);padding:2px 8px;border-radius:3px;margin-bottom:12px;letter-spacing:.06em;color:#fff;background:#a8123f}
.panel{background:var(--surface);border:1.5px solid var(--text);border-radius:10px;padding:22px;box-shadow:6px 6px 0 rgba(38,64,255,.16);margin:22px 0}
.cta-row{margin:18px 0 8px}
.pair{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 36px}
.sample{border:1.5px dashed var(--muted);border-radius:10px;padding:20px;margin:26px 0;background:rgba(255,255,255,.6)}
.sample .code{margin-bottom:0}
.panel-tag.alt{background:var(--accent);color:#14161f}
.board-wrap{overflow:auto;border-radius:8px;-webkit-overflow-scrolling:touch}
.board-note{display:none}
.panel>h2:first-child,.panel>h3:first-child{margin-top:0}
.panel-tag{display:inline-block;font:600 .8rem var(--mono);text-transform:lowercase;background:var(--text);color:#fff;padding:2px 8px;border-radius:3px;margin-bottom:10px}
label,.lbl{display:block;font-weight:600;font-size:.92rem;margin:0 0 6px}
input[type=text],input[type=email],textarea,select{width:100%;font:inherit;padding:10px 12px;border:1.5px solid var(--text);border-radius:6px;background:#fff;color:var(--text)}
textarea{min-height:110px;resize:vertical}
.row{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.field{margin-bottom:16px}
.hint{font-size:.85rem;color:var(--muted);margin:4px 0 0}
.btn{display:inline-block;font:600 .95rem var(--bf);padding:10px 18px;border-radius:6px;border:1.5px solid var(--text);background:var(--primary);color:#fff;cursor:pointer;text-decoration:none;box-shadow:3px 3px 0 var(--text)}
.btn:hover{background:var(--primary-dk);color:#fff}
.btn:active{transform:translate(2px,2px);box-shadow:1px 1px 0 var(--text)}
.btn.alt{background:var(--surface);color:var(--text)}
.btn.alt:hover{background:var(--soft);color:var(--text)}
.btn[disabled]{opacity:.6;cursor:wait}
.btn.sm{padding:5px 10px;font-size:.82rem;box-shadow:2px 2px 0 var(--text)}
.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:10px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{position:relative}
.chip input{position:absolute;opacity:0;inset:0;width:100%;height:100%;margin:0;cursor:pointer}
.chip span{display:inline-block;padding:5px 12px;border:1.5px solid var(--text);border-radius:99px;background:#fff;font-size:.88rem;font-weight:500}
.chip input:checked+span{background:var(--primary);color:#fff}
.chip input:focus-visible+span{outline:3px solid var(--accent);outline-offset:2px}
button.ex{font:inherit;font-size:.84rem;border:1.5px dashed var(--muted);background:transparent;border-radius:99px;padding:3px 11px;cursor:pointer;color:var(--text)}
button.ex:hover{border-color:var(--primary);color:var(--primary)}
.out{margin-top:16px}
.out:empty{display:none}
.out.err{color:#a00f3c;font-weight:600}
.code{position:relative;background:#101424;color:#e8ebff;border-radius:8px;border:1.5px solid var(--text);margin:16px 0}
.code pre{margin:0;padding:16px 16px 16px;overflow:auto;font:.86rem/1.6 var(--mono);white-space:pre-wrap;word-break:break-word}
.code .cap{display:flex;justify-content:space-between;align-items:center;padding:6px 8px 6px 14px;border-bottom:1px solid #2c3354;font:.78rem var(--mono);color:#aeb6e8}
.code .btn{background:#2640ff;color:#fff;border-color:#a9b5ff;box-shadow:none}
.out .code{margin:0}
.steps,.list{margin:0;padding-left:1.4em}
.steps li,.list li{margin-bottom:8px}
.tbl{width:100%;border-collapse:collapse}
.tbl td,.tbl th{border:1px solid var(--line);padding:8px;text-align:left;vertical-align:top}
.grid3{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px}
.card{background:var(--surface);border:1.5px solid var(--text);border-radius:10px;padding:18px;display:flex;flex-direction:column;gap:6px}
.card h3{margin:0}
.card p{color:var(--muted);margin:0 0 8px;flex:1}
.card .mono{font:600 .8rem var(--mono);color:#a8123f;text-transform:lowercase}
.num{text-transform:lowercase}
.hero-img{display:block;width:100%;height:auto;border:1.5px solid var(--text);border-radius:10px;background:#fff}
.cube-list{list-style:none;padding:0;margin:0}
.cube-list li{padding:6px 0 6px 26px;position:relative}
.cube-list li:before{content:"";position:absolute;left:4px;top:14px;width:10px;height:10px;background:var(--primary);border:1.5px solid var(--text);transform:rotate(45deg)}
.meter{height:12px;background:#e6e6ee;border-radius:99px;overflow:hidden;border:1.5px solid var(--text)}
.meter>div{height:100%;background:var(--primary);width:0;transition:width .3s}
.meter-lbl{display:flex;justify-content:space-between;font:.82rem var(--mono);margin-bottom:6px}
.pre-box{white-space:pre-wrap}
.two{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:22px;align-items:start}
.sticky{position:sticky;top:76px}
.crit{display:grid;grid-template-columns:90px 1fr 40px;gap:10px;align-items:center;font-size:.9rem;margin:6px 0}
.crit .meter{height:8px}
.tips{margin:12px 0 0;padding-left:1.2em;font-size:.92rem}
.board{width:100%;min-width:680px;background:#fff;border:1.5px solid var(--text);border-radius:8px;touch-action:none;display:block}
.board text{font-family:var(--bf)}
.tcard{cursor:grab}
.tcard:focus-visible{outline:none}
.tcard:focus-visible rect.bd{stroke:var(--accent);stroke-width:3}
.field-line{display:flex;gap:6px;align-items:center;margin:4px 0;font-size:.9rem}
.field-line input[type=text]{padding:5px 8px}
.field-line select{width:auto;padding:5px}
.field-line .btn{padding:3px 8px}
.ring{width:120px;height:120px;flex:none}
.ring text{font:700 22px var(--hf);fill:var(--text)}
.prog{display:flex;gap:20px;align-items:center;flex-wrap:wrap}
.chk-group h3{font:600 .95rem var(--hf);color:var(--muted);margin:18px 0 6px}
.chk{display:flex;gap:10px;align-items:flex-start;padding:6px 0;font-weight:400}
.chk input{width:20px;height:20px;margin-top:3px;accent-color:var(--primary);flex:none}
.art{padding-top:24px;margin-top:24px;border-top:1px dashed var(--muted)}
.gap-top{margin-top:20px}
.fs{border:0;padding:0;margin:0 0 16px;min-width:0}
.fs legend{padding:0}
.add{display:flex;gap:8px;margin-top:10px}
.add input{padding:6px 10px}
.hp-lbl{position:absolute;left:-9999px}
.tag-note{font:.82rem var(--mono);color:var(--muted)}
.foot{border-top:1.5px solid var(--text);background:var(--surface);padding:22px 20px}
.foot-in{max-width:1440px;margin:auto;display:flex;flex-wrap:wrap;gap:12px 28px;align-items:center;justify-content:space-between;font-size:.9rem}
.foot ul{display:flex;gap:18px;list-style:none;margin:0;padding:0;flex-wrap:wrap}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.ok{background:#e8f7ec;border:1.5px solid #1c7a3a;color:#0e4a21;padding:12px;border-radius:6px;margin-top:12px}
.ok:empty{display:none}
.notfound{font:700 6rem var(--hf);color:var(--primary);margin:0;line-height:1}
.legal h2{margin-top:1.6em;font-size:1.3rem}
.legal li{margin-bottom:4px}
.err-note{color:#a00f3c;font-weight:600}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px;align-items:center}
.textlink{font-weight:600;align-self:center}
.flow{list-style:none;margin:36px 0 0;padding:0;display:grid;grid-template-columns:minmax(0,1fr) 40px minmax(0,1fr);gap:0;align-items:stretch}
.flow>li:not(.arrow){background:var(--surface);border:1.5px solid var(--text);border-radius:10px;padding:20px}
.flow .arrow{display:flex;align-items:center;justify-content:center;font:700 1.8rem var(--mono);color:var(--accent)}
.flow .num,.strip .num{display:inline-block;font:600 .82rem var(--mono);padding:2px 8px;border-radius:3px;margin-bottom:12px;color:#fff;background:#a8123f}
.strip{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;margin-top:36px;border:1.5px solid var(--text);border-radius:10px;background:var(--surface)}
.strip>section{padding:20px}
.strip>section+section{border-left:1.5px dashed var(--muted)}
.wide .main{max-width:none}
.wide .two{grid-template-columns:minmax(0,1.1fr) minmax(0,1fr)}
.wide .sticky .code pre{max-height:60vh}
@media (min-width:861px){.shell.wide{grid-template-columns:minmax(0,1fr)}.wide .side,.wide .rail{display:none}.wide .main{padding-left:clamp(18px,4vw,56px);padding-right:clamp(18px,4vw,56px)}}
@media (max-width:980px){.hero-grid,.strip{grid-template-columns:1fr}.strip>section+section{border-left:0;border-top:1.5px dashed var(--muted)}.flow{grid-template-columns:1fr}.flow .arrow{transform:rotate(90deg);padding:6px}}
@media (max-width:1180px){.shell{grid-template-columns:220px minmax(0,1fr)}.rail{display:none}}
@media (max-width:980px){.pair{grid-template-columns:1fr}}
@media (max-width:860px){
.shell{grid-template-columns:minmax(0,1fr)}
.menu-btn{display:block}
.side{position:fixed;top:var(--hh);left:0;bottom:0;width:min(300px,86vw);height:auto;z-index:40;transform:translateX(-102%);visibility:hidden;background:var(--surface);border-right:1.5px solid var(--text);transition:transform .2s,visibility 0s linear .2s}
.side.open{transform:none;visibility:visible;transition:transform .2s,visibility 0s}
.board-note{display:block}
.two{grid-template-columns:1fr}
.sticky{position:static}
.logo,.logo img{width:150px}
.search{max-width:none}
.menu-btn{margin-left:auto}
}
.search-btn{display:none;font:inherit;border:1.5px solid var(--text);background:var(--surface);padding:8px 10px;border-radius:6px;cursor:pointer;color:var(--text);line-height:1}
@media (max-width:560px){
.search-btn{display:block;margin-left:auto}
.search{display:none;position:absolute;left:12px;right:12px;top:100%;margin:0;max-width:none;padding:8px;background:var(--bg);border:1.5px solid var(--text);border-radius:6px;z-index:60}
.search.open{display:block}
}
@media (max-width:420px){.logo,.logo img{width:140px}.top-in{gap:8px;padding:8px 12px}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media print{.top,.side,.rail,.foot,.actions,.no-print{display:none!important}.shell{display:block}body{background:#fff}}