:root{color-scheme:light}body{margin:0;background:#f7f6f2;color:#202c32;font:15px/1.65 "Segoe UI",Arial,sans-serif}*{box-sizing:border-box}[hidden]{display:none!important}button,input,select,textarea{font:inherit}button{cursor:pointer;min-height:44px;border:1px solid #b8c9c2;border-radius:8px;background:white;color:#173f40;padding:10px 14px;font-weight:600}button:hover{background:#e7efeb}button:disabled{cursor:default;color:#596c67;background:#e8eeeb}button[aria-pressed=true],button[aria-selected=true],.accent{background:#155959;color:white;border-color:#155959}.accent:hover{background:#103e43}button:focus-visible,input:focus-visible,textarea:focus-visible,[tabindex]:focus-visible{outline:3px solid #b48729;outline-offset:3px}h1,h2,h3,h4{line-height:1.25;margin:0 0 16px}h1{font-size:27px}h2{font-size:24px}h3{font-size:26px;letter-spacing:-.025em}h4{font-size:18px}p{margin:0 0 16px}input{min-height:44px;min-width:0;width:100%;border:1px solid #9fb5ad;border-radius:7px;padding:10px;background:white;color:#202c32}.field{display:flex;flex-direction:column;gap:8px;font-weight:600;margin:16px 0}input[type=checkbox]{min-height:18px;width:18px;height:18px;accent-color:#155959}.check{display:flex;align-items:center;gap:9px;min-height:44px}.ui-lab{max-width:1120px;margin:auto;padding:20px 0}.eyebrow,.kicker{display:block;font-size:11px;font-weight:700;letter-spacing:.1em;color:#155959;margin-bottom:12px}.ui-intro{color:#52666b}.case-nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:24px 0}.case-nav button{text-align:left;font-size:13px}.case-heading{margin-top:28px}.case-heading p{color:#52666b}.ui-controls{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;border:1px solid #cedbd5;border-radius:12px 12px 0 0;padding:12px 16px;background:white}.ui-controls .check{margin:0;font-size:13px}.scene{position:relative;isolation:isolate;border:1px solid #cedbd5;border-top:0;background:#062225;border-radius:0 0 12px 12px;overflow:hidden;display:grid;grid-template-columns:1fr 1fr;min-height:360px}.visual{position:relative;min-height:320px;background:#062225;grid-column:2;grid-row:1}.visual canvas{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}.visual-caption{position:absolute;bottom:14px;left:16px;right:16px;font-size:11px;color:#d0e7df;background:#062225;padding:6px 8px;border:1px solid #426764;border-radius:5px;text-align:center}.surface{background:#fff;padding:28px;position:relative;grid-column:1;grid-row:1;min-width:0}.surface p{font-size:14px}.detail-box{padding:18px;border:1px solid #b8c9c2;background:#edf4ef;margin-top:18px;border-radius:9px}.tabs,.plans{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:22px}.tabs button,.plans button{font-size:13px;flex:1;padding:8px 10px}.price{display:block;font-size:30px;font-weight:700;color:#103e43;margin:18px 0}.muted{font-size:12px!important;color:#52666b}.surface ul{padding-left:20px}.surface li{margin:9px 0}.file-scene input{font-size:12px}progress{width:100%;height:14px;accent-color:#155959}.surface pre{font:12px/1.6 Consolas,monospace;white-space:pre-wrap;overflow-wrap:anywhere;max-height:180px;overflow:auto;background:#eaf1ed;padding:12px;border:1px solid #c7d5ce;border-radius:8px}.lesson{margin-top:20px;padding:18px 20px;border-left:3px solid #155959;background:#e7efeb;border-radius:0 10px 10px 0}.lesson p:last-child{margin:0}.lesson p{font-size:14px}.lesson strong{color:#155959}.code-section{margin-top:28px;border-top:1px solid #cbd9d2;padding-top:24px}.code-section summary{cursor:pointer;padding:14px 0;font-weight:600}.code-section textarea{width:100%;min-height:220px;background:#103e43;color:#eff8f0;border:0;border-radius:8px;padding:16px;font:12px/1.65 Consolas,monospace;white-space:pre;overflow:auto}.code-actions{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:12px}.code-status{font-size:12px;color:#52666b;min-height:24px}.ui-footer{font-size:12px;color:#52666b;margin:24px 0 0}.standalone{max-width:1100px;margin:24px auto;padding:16px}.standalone>h1{font-size:26px}.standalone .scene{min-height:420px}
@media(max-width:700px){.scene{grid-template-columns:1fr}.visual{grid-column:1;grid-row:1;min-height:160px;height:160px}.surface{grid-column:1;grid-row:2;padding:22px}.visual-caption{font-size:10px;bottom:8px;max-width:310px;margin:auto}.surface h3{font-size:24px}.case-nav{grid-template-columns:repeat(2,minmax(0,1fr))}.ui-lab{padding:12px 0}.ui-controls{padding:10px}.ui-controls button{font-size:13px}.price{font-size:27px}.standalone{margin:0;padding:12px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
.surface{overflow-wrap:anywhere}
.thread-labels{position:absolute;inset:0;pointer-events:none}
.thread-node{position:absolute;transform:translate(-50%,-50%);width:106px;max-width:35%;padding:10px 7px;border:1px solid #426764;background:#0b3033;border-radius:9px;color:#c1d4cd;text-align:center;line-height:1.3;box-shadow:0 4px 15px #00181945}
.thread-node strong{display:block;font-size:12px;font-weight:600}
.thread-node span{display:block;font-size:10px;margin-top:5px;color:#b6cbc5}
.thread-node.is-active{border-color:#7acdbd;background:#104445;color:#f4faf5}
.thread-node.is-active span{color:#d7eae3}
.hero .thread-node{width:145px;max-width:55%;padding:16px 9px;border-color:#a0e3d5}
.file-scene .thread-node{max-width:27%;width:84px}
.visual-caption{z-index:2;background:#062225;border:0;color:#b6cbc5;left:10px;right:10px;bottom:8px;line-height:1.5}
.threads-disabled canvas,.threads-disabled .thread-labels{visibility:hidden}
.threads-disabled .visual-caption::before{content:"Эффект отключён · "}
.ui-controls .check{font-size:12px}
.ui-controls button{font-size:12px}
.tabs button,.plans button{white-space:nowrap;overflow-wrap:normal;padding:8px 5px;font-size:12px;min-width:0}
@media(max-width:700px){.visual{height:260px;min-height:260px}.thread-node{width:100px}.hero .thread-node{width:140px}.visual-caption{font-size:11px}.ui-controls{gap:6px}.ui-controls .check{flex:1;min-width:115px}.ui-controls button{flex-basis:100%;min-height:38px}.thread-node strong{font-size:12px}.thread-node span{font-size:10px}}