:root { color-scheme: dark; }
    * { box-sizing: border-box; }
    body {
      margin: 0;
      font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
      background: radial-gradient(120% 120% at 50% 0%, #12161d 0%, #090b10 60%, #05070a 100%);
      color: #c9d2de;
      min-height: 100vh;
    }
    header {
      text-align: center;
      padding: 40px 20px 8px;
    }
    header h1 { margin: 0 0 6px; font-size: 30px; letter-spacing: .5px; color: #eef2f8; }
    header p { margin: 0 auto; color: #8b95a4; font-size: 15px; max-width: 640px; }
    header .lead { margin: 14px auto 0; color: #9aa5b3; font-size: 14px; line-height: 1.55; }
    .lang { margin: 2px 0 0; font-size: 13px; letter-spacing: .3px; }
    .lang a { color: #7cc4ff; text-decoration: none; }
    .lang a:hover { text-decoration: underline; }
    .lang .cur { color: #cfe6ff; font-weight: 600; }

    .scenes { max-width: 980px; margin: 0 auto; padding: 24px 20px 80px; }
    .scene {
      display: grid;
      grid-template-columns: minmax(0, 460px) 1fr;
      gap: 28px;
      align-items: center;
      padding: 28px 0;
    }
    .scene + .scene { border-top: 1px solid rgba(255,255,255,.06); }
    .stage {
      position: relative;
      width: 100%;
      max-width: 460px;
      aspect-ratio: 1 / 1;
      margin: 0 auto;
      border-radius: 22px;
      background: #0d1017;
      box-shadow: 0 16px 50px rgba(0,0,0,.55), inset 0 0 0 1px rgba(255,255,255,.04);
      overflow: hidden;
    }
    .stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; }

    .about h2 { margin: 0 0 10px; font-size: 20px; color: #eef2f8; }
    .about p { margin: 0 0 14px; line-height: 1.55; color: #9aa5b3; font-size: 14.5px; }
    .about code {
      font-family: ui-monospace, Consolas, monospace; font-size: 12.5px;
      background: rgba(255,255,255,.06); padding: 1px 5px; border-radius: 4px; color: #c9d2de;
    }
    .btn {
      font: inherit; font-size: 13px;
      padding: 8px 16px; border-radius: 9px;
      border: 1px solid rgba(157,178,204,.35);
      background: rgba(157,178,204,.12); color: #c9d2de; cursor: pointer;
    }
    .btn:hover { background: rgba(157,178,204,.2); }
    .stage { transition: background .3s ease; }
    .ctl { display: flex; flex-direction: column; gap: 12px; margin-top: 4px; }
    .ctl label { display: flex; flex-direction: column; gap: 5px; font-size: 12.5px; color: #98a2b0; }
    .ctl select, .ctl input[type=range] { font: inherit; }
    .ctl select {
      font-size: 13px; padding: 6px 8px; border-radius: 8px;
      background: #141a22; color: #c9d2de; border: 1px solid rgba(255,255,255,.14);
    }
    .ctl input[type=range] { accent-color: #7cc4ff; width: 100%; }
    .themes { display: flex; gap: 6px; flex-wrap: wrap; }
    .themes button {
      font: inherit; font-size: 12.5px; padding: 6px 12px; border-radius: 8px; cursor: pointer;
      background: rgba(255,255,255,.05); color: #9aa5b3; border: 1px solid rgba(255,255,255,.12);
    }
    .themes button.on { background: rgba(124,196,255,.18); color: #cfe6ff; border-color: rgba(124,196,255,.5); }
    .anno { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
    .legend { list-style: none; margin: 6px 0 0; padding: 0; display: flex; flex-direction: column; gap: 9px; }
    .legend li { display: flex; gap: 10px; font-size: 13.5px; color: #9aa5b3; line-height: 1.4; }
    .legend .n {
      flex: 0 0 auto; width: 21px; height: 21px; border-radius: 50%;
      background: rgba(124,196,255,.18); color: #cfe6ff; border: 1px solid rgba(124,196,255,.45);
      font-size: 12px; font-weight: 600; display: flex; align-items: center; justify-content: center; margin-top: 1px;
    }
    .legend b { color: #cfe6ff; font-weight: 600; }
    .soon {
      opacity: .5;
      font-size: 13px; color: #8b95a4;
      border: 1px dashed rgba(255,255,255,.15);
      border-radius: 12px; padding: 14px; text-align: center;
      display: flex; align-items: center; justify-content: center;
      aspect-ratio: 1 / 1; max-width: 460px; margin: 0 auto;
    }

    .more { padding: 34px 0 10px; border-top: 1px solid rgba(255,255,255,.06); }
    .more h2 { margin: 0 0 18px; font-size: 20px; color: #eef2f8; }
    .cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
    .card {
      border: 1px solid rgba(255,255,255,.08); border-radius: 12px; padding: 16px;
      background: rgba(255,255,255,.02);
    }
    .card h3 { margin: 0 0 8px; font-size: 15px; color: #cfe6ff; }
    .card p { margin: 0; font-size: 13.5px; line-height: 1.5; color: #9aa5b3; }
    footer { text-align: center; padding: 30px 20px 50px; color: #7b8593; font-size: 13px; }
    footer a { color: #7cc4ff; text-decoration: none; }

    @media (max-width: 760px) {
      .scene { grid-template-columns: 1fr; }
    }

    /* --- Галерея окон: статичные копии оконного интерфейса под 4 темами --- */
    .windows { padding: 34px 0 10px; border-top: 1px solid rgba(255,255,255,.06); }
    .windows h2 { margin: 0 0 6px; font-size: 20px; color: #eef2f8; }
    .windows > p { margin: 0 0 18px; font-size: 14px; line-height: 1.55; color: #9aa5b3; }
    .wswitch { display: flex; gap: 6px; flex-wrap: wrap; margin: 0 0 22px; }
    .wsw {
      font: inherit; font-size: 12.5px; padding: 6px 14px; border-radius: 8px; cursor: pointer;
      background: rgba(255,255,255,.05); color: #9aa5b3; border: 1px solid rgba(255,255,255,.12);
    }
    .wsw.on { background: rgba(124,196,255,.18); color: #cfe6ff; border-color: rgba(124,196,255,.5); }
    .wgrid { display: flex; flex-wrap: wrap; gap: 22px; align-items: flex-start; justify-content: center; }

    #windows-gallery {
      --w-bg:#F5F7FA; --w-surface:#FFF; --w-text:#1B2430; --w-muted:#6B7686;
      --w-border:#D6DCE4; --w-accent:#2C7BE5; --w-accent-text:#FFF; --w-danger:#D13438; --w-tb:#EBEEF3;
    }
    .wwin {
      background: var(--w-bg); border: 1px solid var(--w-border); border-radius: 8px;
      overflow: hidden; color: var(--w-text);
      font-family: "Segoe UI", system-ui, sans-serif; font-size: 13px;
      box-shadow: 0 12px 34px rgba(0,0,0,.45);
    }
    .wwin-bare { background: transparent; border: 0; overflow: visible; box-shadow: none; }

    .wtb { display: flex; align-items: center; gap: 8px; padding: 8px 12px; background: var(--w-tb); border-bottom: 1px solid var(--w-border); }
    .wdot { width: 13px; height: 13px; border-radius: 50%; background: var(--w-accent); flex: 0 0 auto; }
    .wttl { flex: 1; font-size: 13px; color: var(--w-text); }
    .wx { color: var(--w-muted); font-size: 12px; }

    .wbody { padding: 16px 18px; }
    .wh { font-size: 17px; font-weight: 500; margin: 0 0 12px; }
    .wlbl { font-size: 13px; margin: 0 0 6px; }
    .winp { height: 26px; border-bottom: 2px solid var(--w-accent); margin: 0 0 6px; position: relative; }
    .wcaret { position: absolute; left: 1px; top: 4px; width: 1px; height: 15px; background: var(--w-accent); }
    .whint { font-size: 12px; color: var(--w-muted); }
    .wmsg { font-size: 13px; line-height: 1.5; margin: 0 0 16px; }
    .wmsg b { font-weight: 500; }

    .wbtns { display: flex; justify-content: flex-end; gap: 8px; margin-top: 14px; }
    .wbtns-bar { padding: 12px 16px; margin: 0; border-top: 1px solid var(--w-border); }
    .wbtn {
      font-size: 13px; padding: 6px 16px; border-radius: 4px;
      border: 1px solid var(--w-border); background: var(--w-surface); color: var(--w-text);
    }
    .wpri { background: var(--w-accent); border-color: var(--w-accent); color: var(--w-accent-text); }
    .wdis { color: var(--w-muted); opacity: .6; }

    .wbody-split { display: flex; padding: 0; }
    .wnav { display: flex; flex-direction: column; gap: 2px; padding: 12px 8px; border-right: 1px solid var(--w-border); min-width: 148px; }
    .wnav-i { padding: 8px 12px; font-size: 13px; border-radius: 4px; }
    .wnav-i.on { background: var(--w-accent); color: var(--w-accent-text); }
    .wpane-host { flex: 1; min-width: 0; padding: 14px 16px; }
    .wpane { display: none; flex-direction: column; gap: 13px; }
    .wpane.on { display: flex; }
    .wnav-i { cursor: pointer; }
    .whk-row { display: flex; gap: 6px; align-items: stretch; }
    .whk-status { font-size: 11px; color: var(--w-accent); margin-top: 4px; }
    .wgst-h { margin-top: 12px; font-weight: 500; }
    .wgst { display: flex; gap: 10px; }
    .wgst-k { font-weight: 500; font-size: 12.5px; width: 120px; flex: 0 0 auto; }
    .wgst-v { font-size: 12.5px; color: var(--w-muted); }
    .wsl { display: flex; align-items: center; gap: 10px; }
    .wsl-track { flex: 1; height: 4px; background: var(--w-border); border-radius: 2px; position: relative; }
    .wsl-fill { position: absolute; left: 0; top: 0; height: 4px; background: var(--w-accent); border-radius: 2px; }
    .wsl-thumb { position: absolute; top: 50%; width: 14px; height: 14px; border-radius: 50%; background: var(--w-accent); transform: translate(-50%, -50%); }
    .wsl-val { font-size: 12px; color: var(--w-muted); width: 42px; text-align: right; flex: 0 0 auto; }
    .wfield { display: flex; flex-direction: column; gap: 5px; }
    .wflbl { font-size: 12.5px; }
    .wselect { display: flex; align-items: center; justify-content: space-between; gap: 8px; border: 1px solid var(--w-border); border-radius: 4px; padding: 6px 10px; background: var(--w-surface); }
    .wsval { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .wchev { color: var(--w-muted); flex: 0 0 auto; }
    .wnum { border: 1px solid var(--w-border); border-radius: 4px; padding: 6px 10px; background: var(--w-surface); }
    .wcheck { display: flex; align-items: center; gap: 8px; font-size: 12.5px; margin-top: 2px; }
    .wbox { width: 16px; height: 16px; border: 1px solid var(--w-border); border-radius: 3px; display: inline-flex; align-items: center; justify-content: center; font-size: 11px; color: transparent; flex: 0 0 auto; }
    .wbox.on { background: var(--w-accent); border-color: var(--w-accent); color: var(--w-accent-text); }

    .wtray { display: flex; align-items: flex-start; gap: 4px; }
    .wmenu { background: var(--w-surface); border: 1px solid var(--w-border); border-radius: 6px; padding: 4px; box-shadow: 0 12px 34px rgba(0,0,0,.45); }
    .wmenu-solo { display: inline-block; }
    .wsubmenu { margin-top: 96px; }
    .wmi { display: flex; align-items: center; padding: 6px 12px; font-size: 13px; border-radius: 4px; color: var(--w-text); white-space: nowrap; }
    .wmi.hdr { color: var(--w-muted); }
    .wmi.sub .warr { margin-left: auto; padding-left: 18px; color: var(--w-muted); }
    .wmi.drop.muted { color: var(--w-muted); }
    .wtick { color: var(--w-accent); width: 16px; margin-right: 4px; }
    .wtime { color: var(--w-muted); margin-right: 10px; font-variant-numeric: tabular-nums; }
    .wsep { height: 1px; background: var(--w-border); margin: 4px 6px; }

    .wflex { flex: 1; min-width: 0; }
    .wmini { padding: 4px 10px; }
    .wdanger { color: var(--w-danger); border-color: var(--w-danger); background: transparent; }
    .wbtns-split { justify-content: space-between; }
    .wed-foot-r { display: flex; gap: 8px; }

    .wed { padding: 14px; }
    .wed-cols { display: flex; gap: 14px; align-items: flex-start; }
    .wed-col-l { width: 258px; flex: 0 0 auto; display: flex; flex-direction: column; gap: 9px; }
    .wed-col-m { width: 190px; flex: 0 0 auto; }
    .wed-col-d { width: 400px; flex: 0 0 auto; background: var(--w-surface); border: 1px solid var(--w-accent); border-radius: 6px; padding: 10px; }
    .wpath { display: flex; gap: 6px; align-items: stretch; }

    .wmaster-h { font-size: 13px; font-weight: 500; }
    .wmaster-sub { font-size: 11px; color: var(--w-muted); margin: 1px 0 6px; }
    .wmr { border-left: 3px solid transparent; border-radius: 5px; padding: 4px 8px; margin-bottom: 3px; }
    .wmr.sel { background: var(--w-sel); border-left-color: var(--w-accent); }
    .wmr-n { font-size: 13px; }
    .wmr.sel .wmr-n { font-weight: 500; }
    .wmr-s { font-size: 11px; color: var(--w-muted); }
    .wmaster-btns { display: flex; gap: 6px; margin: 8px 0 12px; }

    .wd-head { display: flex; align-items: center; margin-bottom: 8px; }
    .wd-title { font-size: 13px; font-weight: 500; }
    .wd-tools { margin-left: auto; display: flex; gap: 4px; }
    .wminibtn { min-width: 24px; text-align: center; border: 1px solid var(--w-border); border-radius: 4px; padding: 2px 4px; font-size: 12px; color: var(--w-text); }
    .wd-lbl { font-size: 11px; margin: 8px 0 3px; }
    .wd-lbl-top { margin-top: 0; }
    .wcond { margin: 6px 0 8px; }
    .wcond-top { display: flex; align-items: center; gap: 6px; margin-bottom: 4px; }
    .wopword { color: var(--w-muted); font-size: 12px; }
    .wed-btnrow { margin-top: 6px; }

    .wed-prev { margin-top: 14px; background: var(--w-surface); border: 1px solid var(--w-accent); border-radius: 6px; padding: 10px; display: flex; gap: 14px; }
    .wed-prev-l { width: 300px; flex: 0 0 auto; }
    .wed-prev-r { flex: 1; min-width: 0; }
    .wtext { border: 1px solid var(--w-border); border-radius: 4px; padding: 6px 8px; height: 84px; font-size: 12px; line-height: 1.5; white-space: pre-line; color: var(--w-text); background: var(--w-bg); }
    .wprev-hit { font-size: 12px; margin-top: 2px; }

    @media (max-width: 760px) {
      .wgrid { gap: 18px; }
    }