/* Extend the established AIE1001 visual language for numerical experiments. */
.ml-controls { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:16px; margin:12px 0 20px; }
.ml-controls label { display:grid; grid-template-columns:1fr 3em; gap:4px; font-size:14px; }
.ml-controls input { grid-column:1; width:100%; accent-color:var(--teal); min-height:30px; }
.ml-controls output { grid-column:2; grid-row:2; text-align:right; font-family:var(--mono); }
.ml-result { overflow-wrap:anywhere; }
.chap-body article img { display:block; max-width:100%; height:auto; margin:18px auto; border:1px solid var(--line); }
.chap-body article pre { max-width:100%; overflow-x:auto; padding:18px; background:var(--card-2); border-left:3px solid var(--teal); font:14px/1.65 var(--mono); }
.chap-body article { min-width:0; }
.table-scroll { overflow-x:auto; }
.flow { display:flex; gap:10px; align-items:center; flex-wrap:wrap; padding:12px 0; }
.flow>span { padding:14px; background:var(--card-2); border-radius:8px; font-family:var(--mono); font-size:14px; }
.flow>span.done { background:var(--teal-soft); }
.matrix-flow { display:flex; gap:24px; flex-wrap:wrap; align-items:center; padding:12px 0; }
.matrix-flow small { display:block; margin-bottom:9px; }
.ml-matrix { display:grid; grid-template-columns:repeat(var(--cols),minmax(0,1fr)); width:max-content; gap:3px; }
.ml-cell { display:grid; place-items:center; width:35px; height:35px; background:var(--card-2); border:1px solid var(--line); font-family:var(--mono); font-size:14px; }
.ml-cell.selected { background:var(--teal-soft); border:2px solid var(--teal); font-weight:600; }
.weight-row { display:grid; grid-template-columns:55px 1fr 65px; align-items:center; gap:10px; margin:14px 0; font-size:14px; }
.weight-track { background:var(--card-2); height:22px; border-radius:4px; overflow:hidden; }
.weight-track>div { height:100%; background:var(--teal); transition:width .15s; }
.mask-control { display:flex; align-items:center; gap:8px; font-size:14px; }
.mask-control input { width:20px; height:20px; accent-color:var(--teal); }
.ml-quiz { border:1px solid var(--line); padding:18px; margin:20px 0; border-radius:8px; min-width:0; }
.ml-quiz label { display:block; padding:8px 0; }
.ml-quiz legend { font-weight:600; padding:0 8px; }
.ml-quiz input { accent-color:var(--teal); }
.feedback { font-size:14px; color:var(--teal); }
.source-ref { font-size:13px; color:var(--ink-2); border-top:1px solid var(--line); padding-top:8px; }
.equation { font-family:var(--mono); padding:18px; overflow-x:auto; background:var(--card-2); border-left:3px solid var(--teal); margin:18px 0; font-size:15px; }
.pilot-note { background:var(--mark); padding:14px 18px; border-radius:6px; margin:12px 0; font-size:14px; }
.hub-header { padding:70px 0 36px; max-width:860px; }
.hub-header h1 { font-size:clamp(42px,7vw,72px); margin:18px 0 24px; }
.hub-map { display:grid; grid-template-columns:repeat(3,1fr); margin:20px 0 50px; border:1px solid var(--line); background:var(--card); }
.hub-map>article { display:flex; flex-direction:column; padding:32px; color:var(--ink); border-right:1px solid var(--line); }
.hub-map>article:last-child { border:0; }
.hub-map h2 { font-size:28px; }
.hub-map .lecture-id { color:var(--teal); font-family:var(--mono); }
.hub-map .open { margin-top:auto; color:var(--teal); font-weight:600; padding-top:16px; }
.lecture-actions { display:flex; flex-wrap:wrap; align-items:center; gap:8px; margin-top:auto; padding-top:16px; }
.notes-link { font-size:13px; font-weight:600; text-decoration:none; padding:6px 10px; border-radius:7px; color:var(--paper); background:var(--teal); border:1px solid var(--teal); }
.watch { font:inherit; font-size:13px; padding:6px 10px; border-radius:7px; border:1px solid var(--amber); background:var(--mark); color:var(--ink); cursor:pointer; }
.watch:hover { filter:brightness(1.05); }
.btn.watch { background:var(--mark); border-color:var(--amber); color:var(--ink); }
.part-notes { display:block; margin-top:12px; font-size:13px; color:var(--teal); }
.video[data-video] { padding:18px; background:var(--card); }
dialog.course-player { width:min(1040px,calc(100vw - 32px)); max-height:calc(100dvh - 32px); box-sizing:border-box; padding:0; border:1px solid var(--line); border-radius:14px; background:var(--card); color:var(--ink); }
dialog.course-player::backdrop { background:rgba(0,0,0,.6); }
.course-player video { display:block; width:100%; max-height:65dvh; aspect-ratio:16/9; background:#000; }
.player-bar { display:flex; justify-content:space-between; align-items:center; gap:12px; padding:10px 14px; font-size:14px; }
.player-bar button { flex-shrink:0; }
.player-list { display:flex; flex-wrap:wrap; gap:6px; padding:0 14px 14px; }
.player-list button { font:inherit; font-size:12.5px; padding:7px 9px; border-radius:7px; border:1px solid var(--line); background:var(--paper); color:var(--ink); cursor:pointer; text-align:left; }
.player-list button.on { border-color:var(--amber); background:var(--mark); font-weight:600; }
.player-error { margin:0; padding:0 14px 14px; color:var(--ink); }
.hub-sketch { height:95px; margin:12px 0; }
.hub-sketch svg { width:100%; height:100%; color:var(--teal); }
.hub-bottom { display:grid; grid-template-columns:1fr 1fr; gap:36px; margin:32px 0 70px; }
button:disabled { opacity:.45; cursor:default; }
:focus-visible { outline:3px solid var(--amber); outline-offset:3px; }
.hero-pause { display:none; }
@media(max-width:700px) { .hub-map,.hub-bottom { grid-template-columns:1fr; } .hub-map>article { border-right:0; border-bottom:1px solid var(--line); padding:24px; } .ml-controls { grid-template-columns:1fr; } .ml-cell { width:30px;height:30px; } .matrix-flow { gap:16px; } .hub-header { padding-top:36px; } }
@media(prefers-reduced-motion:reduce) { *,*::before,*::after { scroll-behavior:auto!important; transition:none!important; animation:none!important; } }