:root {
            --cream: #f7f3ee;
            --ink: #262421;
            --panel: #fffaf5;
            --line: #e4d9ce;
            --orange: #d97757;
            --blue: #6d8fc7
        }

        body {
            margin: 0;
            background: var(--cream);
            color: var(--ink);
            font: 14px system-ui, -apple-system, sans-serif
        }

        header {
            padding: 14px 18px;
            background: var(--ink);
            color: #fffaf5;
            display: flex;
            gap: 8px;
            align-items: center;
            flex-wrap: wrap
        }

        input {
            flex: 1;
            min-width: 420px;
            background: #fffaf5;
            color: var(--ink);
            border: 1px solid #9b8b7e;
            padding: 9px;
            border-radius: 6px
        }

        button {
            padding: 9px 14px;
            border: 0;
            border-radius: 6px;
            background: var(--orange);
            color: #fff;
            cursor: pointer
        }

        select {
            background: #fffaf5;
            color: var(--ink);
            border: 1px solid #b9a99d;
            border-radius: 6px;
            padding: 7px 28px 7px 10px
        }

        .layout {
            display: grid;
            grid-template-columns: minmax(360px, 1.65fr) 8px minmax(360px, 1fr);
            height: calc(100vh - 125px);
            min-height: 560px;
            gap: 12px;
            padding: 12px
        }

        .plot-toolbar {
            height: 42px;
            display: flex;
            align-items: center;
            gap: 7px;
            padding: 0 12px;
            border-bottom: 1px solid var(--line)
        }

        .plot-toolbar b {
            margin-right: 8px
        }

        .plot-toolbar button {
            padding: 5px 10px;
            font-size: 12px
        }

        .panel {
            background: var(--panel);
            border: 1px solid var(--line);
            border-radius: 8px;
            min-height: 0;
            box-shadow: 0 2px 8px #50351b12
        }

        .video-panel {
            display: grid;
            grid-template-rows: minmax(0, var(--video-share, 1fr)) 8px minmax(0, var(--charts-share, 1fr));
            gap: 6px;
            padding: 10px;
            min-width: 0
        }

        .video-panel video {
            min-height: 0;
            height: 100%;
            min-width: 0
        }

        .row-resizer {
            height: 8px;
            background: #d6c5b7;
            border-radius: 5px;
            cursor: row-resize;
            touch-action: none;
            position: relative
        }
        .row-resizer::after {
            content: '';
            position: absolute;
            width: 36px;
            height: 2px;
            background: #887361;
            left: calc(50% - 18px);
            top: 3px
        }
        .row-resizer:hover, .row-resizer:focus-visible, .row-resizer.dragging { background: #d97757 }
        body.resizing-height { cursor: row-resize; user-select: none }

        .column-resizer {
            width: 8px;
            border-radius: 5px;
            background: #d6c5b7;
            cursor: col-resize;
            align-self: stretch;
            transition: background .15s
        }

        .column-resizer:hover,
        .column-resizer.dragging {
            background: var(--orange)
        }

        #speed-chart-right, #speed-chart-left { height: 100%; min-height: 0; min-width: 0; border-top: 1px solid var(--line); box-sizing: border-box }
        .speed-charts { min-height: 0; min-width: 0; display: grid; grid-template-rows: minmax(0, 1fr) minmax(0, 1fr); gap: 3px }

        #plot {
            height: calc(100% - 42px);
            min-height: 0;
            background: #f0e8df;
            border: 1px solid #d8c8ba;
            border-radius: 7px;
            overflow: hidden
        }

        video {
            width: 100%;
            height: 100%;
            min-height: 0;
            object-fit: contain;
            background: #171513
        }

        .timeline-bar {
            padding: 12px 18px 16px;
            background: var(--ink);
            color: #fffaf5
        }

        .timeline-row {
            display: flex;
            align-items: center;
            gap: 14px
        }

        .timeline-track {
            position: relative;
            flex: 1;
            height: 26px;
            border-radius: 6px;
            background: #4a403a;
            overflow: visible
        }

        .timeline-track input {
            position: absolute;
            inset: -8px 0 auto;
            width: 100%;
            min-width: 0;
            height: 42px;
            margin: 0;
            padding: 0;
            border: 0;
            box-sizing: border-box;
            overflow: visible;
            background: transparent;
            appearance: none;
            z-index: 2
        }

        .timeline-track input::-webkit-slider-runnable-track {
            height: 26px;
            background: transparent
        }

        .timeline-track input::-webkit-slider-thumb {
            appearance: none;
            width: 4px;
            height: 26px;
            background: #fff;
            border-radius: 2px;
            box-shadow: 0 0 0 2px #26242155
        }

        .timeline-track input::-moz-range-track {
            height: 26px;
            background: transparent
        }

        .timeline-track input::-moz-range-thumb {
            width: 4px;
            height: 26px;
            background: #fff;
            border: 0;
            border-radius: 2px
        }

        .speed-control {
            display: flex;
            align-items: center;
            gap: 7px;
            white-space: nowrap
        }

        .speed-control select {
            background: #fffaf5;
            border: 0;
            padding: 7px 10px
        }

        .error {
            color: #a33b2b
        }

        dialog.config-box { color: var(--ink); background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 24px; width: min(760px, 88vw); box-shadow: 0 8px 30px #0004; }
        dialog.config-box::backdrop { background: #17151388; }
        .config-grid { display: grid; grid-template-columns: auto minmax(180px, 1fr) auto minmax(180px, 1fr); gap: 6px 10px; align-items: center; margin-top: 8px; font-size: 12px; }
        .config-grid input { min-width: 0; width: 100%; box-sizing: border-box; padding: 5px 7px; }
        .config-grid button { padding: 5px 10px; }

        @media(max-width:1100px) {
            .layout {
                grid-template-columns: 1fr 1fr
            }

            .column-resizer {
                display: none
            }
        }

        @media(max-width:900px) {
            .layout {
                grid-template-columns: 1fr
            }

            .panel {
                min-height: 360px
            }

            #plot {
                height: 500px
            }

            video {
                min-height: 360px
            }

            input {
                min-width: 240px
            }
        }

        body { display: flex; flex-direction: column; overflow: hidden; height: 100dvh }
        body > header, .timeline-bar { flex: none }
        .layout { flex: 1 1 0; height: auto; min-height: 0; padding: 8px; box-sizing: border-box }
        .panel { min-height: 0; overflow: hidden }
        #plot { height: calc(100% - 42px); min-height: 0; background: #eee4da; border: 2px solid #cdb9a8; border-radius: 8px; box-shadow: inset 0 0 0 1px #fffaf5, 0 2px 8px #50351b30 }
        .timeline-bar { position: relative; z-index: 3 }
        .timeline-track input::-webkit-slider-thumb { box-sizing: border-box; width: 4px; height: 42px; margin-top: -8px; background: #fff; border: 1px solid var(--orange); box-shadow: 0 1px 4px #17110dcc }
        .timeline-track input::-moz-range-thumb { box-sizing: border-box; width: 4px; height: 42px; background: #fff; border: 1px solid var(--orange); box-shadow: 0 1px 4px #17110dcc }
        .plot-readout{display:flex;align-items:center;gap:5px;margin-right:10px;font-size:11px;font-variant-numeric:tabular-nums}.plot-readout>span:not(.readout-title){background:#f0e7df;border-radius:4px;padding:4px 5px;min-width:48px;text-align:center}.readout-title{font-weight:700;color:var(--blue);margin-left:5px}.readout-title.left-label{color:var(--orange)}
        .timeline-meta{display:flex;gap:6px;flex:0 0 auto}.timeline-pill{background:#f0e7df;color:var(--ink);border-radius:6px;padding:6px 9px;font-size:12px;font-variant-numeric:tabular-nums;white-space:nowrap}.timeline-row{gap:10px}.timeline-track{min-width:0;flex:1}
        button:disabled { opacity: .5; cursor: default }
        .column-resizer { touch-action: none }
        .plot-readout { flex-wrap: wrap }
        @media(max-width:900px) {
            body { display: block; overflow: auto; height: auto }
            .layout { display: flex; flex-direction: column; height: auto }
            .panel { height: 540px; flex: none }
            .video-panel { height: 650px }
            .plot-toolbar { height: auto; min-height: 42px; flex-wrap: wrap; padding: 6px }
            .plot-readout { margin: 0 }
            #plot { height: 450px }
            .timeline-row { flex-wrap: wrap }
            .timeline-track { flex-basis: 100%; order: 2; margin-top: 10px }
            input { min-width: 140px }
            video { min-height: 0 }
            .timeline-meta { flex-wrap: wrap }
        }