.demo-heading{padding-bottom:28px}.demo-heading h1{font-size:clamp(40px,5vw,68px);margin-bottom:18px}.demo-heading .lede{max-width:760px;font-size:17px}.demo-shell{padding-bottom:65px}.lesson-list{display:flex;gap:8px;overflow:auto;padding:8px 0 22px;scrollbar-width:thin}.lesson-tab{flex:0 0 auto;padding:11px 15px;background:transparent;border:1px solid var(--line);color:var(--muted);font-size:12px}.lesson-tab[aria-current=step]{background:var(--dark);color:var(--paper);border-color:var(--dark)}.demo-layout{display:grid;grid-template-columns:minmax(330px,1fr) minmax(320px,1fr);gap:48px;align-items:start}.board-side{background:#e5e1d5;padding:22px}.board-heading{display:flex;justify-content:space-between;gap:15px;align-items:center;margin-bottom:12px}.board-heading h2{font:20px var(--serif);margin:0}.board-heading span{font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}.demo-board{display:grid;grid-template-columns:repeat(5,1fr);gap:4px;max-width:445px;margin:auto}.demo-cell{aspect-ratio:1.23;border:1px solid #c8c4b6;padding:0;position:relative;display:block;color:var(--ink);background:#eee9dc;min-width:0}.demo-cell[data-ground=Forest]{background:#b4c1a5}.demo-cell[data-ground=Fort]{background:#bcac8d}.demo-cell[data-ground=River]{background:repeating-linear-gradient(-20deg,#89a5a4,#89a5a4 6px,#96afac 6px,#96afac 9px)}.demo-cell[data-ground=Crossing]{background:#dbd2b4}.demo-cell[data-ground=Pass]{background:#c3bdae}.demo-cell[data-ground=Supply]{background:#dac294}.demo-cell[data-ground=Camp]{background:#abafa0}.demo-cell .coordinate{position:absolute;left:4px;top:2px;font-size:8px;color:#424b40;z-index:2}.demo-cell .terrain-name{position:absolute;bottom:3px;left:0;right:0;text-align:center;font-size:8px;line-height:1;color:#38473c}.demo-cell.focused{outline:2px solid #986b36;outline-offset:-2px;background-color:#e2cc99}.demo-cell.selected{box-shadow:inset 0 0 0 3px #873c32}.demo-cell.occupied .terrain-name{display:none}.piece{position:absolute;inset:4px 6px 3px;border:2px solid #29352c;border-radius:3px;overflow:hidden;box-shadow:0 2px 3px #0004;background:#1d2420}.piece.ZHAO{border-color:#a3473b}.piece img{height:100%;width:100%;object-fit:cover;opacity:.92}.piece.hidden-piece img{object-fit:cover;opacity:1}.piece .piece-name{position:absolute;bottom:0;left:0;right:0;background:#121b17e8;color:#fff;font-size:8px;line-height:1.2;padding:3px 2px;text-align:center}.piece .rank{position:absolute;top:1px;right:2px;min-width:17px;height:17px;line-height:17px;border-radius:50%;background:#f0e3c6;color:#222;font-size:11px;font-weight:bold}.demo-cell.occupied .coordinate{background:#eee9dce8;padding:0 2px;left:2px;top:1px}.board-edge{font-size:9px;text-transform:uppercase;letter-spacing:.14em;text-align:center;margin:8px 0;color:#676b5d}.board-legend{display:flex;gap:14px;flex-wrap:wrap;font-size:10px;color:var(--muted);margin-top:15px}.dot{display:inline-block;width:9px;height:9px;background:#29352c;margin-right:5px}.dot.zhao{background:#a3473b}.dot.focus{background:#bf9451}.lesson-intro{font-size:13px;color:var(--muted);margin-bottom:18px}.demo-progress{height:3px;background:#d4cdbb;margin:12px 0 28px}.demo-progress>span{display:block;height:100%;background:var(--red);transition:width .2s}.step-header{display:flex;justify-content:space-between;gap:20px;align-items:center;font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}.phase{color:var(--red)}.narrative{min-height:230px}.narrative h2{font-size:34px;margin:0 0 20px;letter-spacing:-.025em}.narrative p{font-size:16px;line-height:1.8;color:#5b6254}.rank-math{background:#e6dfcf;border-left:3px solid var(--gold);padding:12px 16px;margin:18px 0;font-size:13px;line-height:1.75}.ability-status{font-size:12px;background:#26332b;color:#f1e8d5;padding:10px 14px;margin:14px 0}.move-label{color:var(--red);font-size:12px;font-weight:bold;margin:10px 0}.demo-controls{display:flex;gap:10px;flex-wrap:wrap;margin:24px 0 14px}.demo-controls button{padding:11px 20px;min-height:45px}.demo-controls .secondary{background:transparent;border:1px solid var(--line);color:var(--ink);font-size:12px}.demo-controls button:disabled{opacity:.4;cursor:default}.replay{background:none;border:0;padding:5px 0;border-bottom:1px solid var(--line);font-size:11px;color:var(--muted)}.casualties{font-size:11px;color:var(--red);margin:12px 0;min-height:18px}.demo-quiz{border-top:1px solid var(--line);margin-top:24px;padding-top:20px}.demo-quiz h3{font:18px var(--serif);margin-bottom:15px}.quiz-options{display:grid;gap:8px}.quiz-options button{background:#faf7f0;border:1px solid var(--line);padding:10px 13px;text-align:left;font-size:12px}.quiz-options button.correct{border-color:#467050;background:#dae5d8}.quiz-options button.incorrect{border-color:#ab665b;background:#edddd5}.quiz-feedback{font-size:12px;color:#4e604b;line-height:1.6;margin:12px 0 0}.inspector{display:grid;grid-template-columns:85px 1fr;gap:20px;padding-top:25px;margin-top:28px;border-top:1px solid var(--line);align-items:start}.inspector img{width:85px;height:auto}.inspector h3{font-size:21px;margin:5px 0 9px}.inspector p{font-size:12px;color:var(--muted);margin-bottom:10px}.inspector a{font-size:11px;text-decoration:underline;text-underline-offset:3px}.demo-note{font-size:12px;color:var(--muted);border-top:1px solid var(--line);padding-top:25px;margin-top:35px;max-width:900px}.lesson-finished{font-size:11px;color:var(--red);font-weight:bold}.demo-footer-actions{display:flex;gap:25px;flex-wrap:wrap;margin-top:22px}.demo-cell .piece{transition:filter .15s}.demo-cell:hover .piece{filter:brightness(1.15)}@media(max-width:1000px){.demo-layout{gap:28px}.board-side{padding:15px}.narrative h2{font-size:28px}.narrative p{font-size:14px}.piece .piece-name{font-size:7px}.demo-controls button{padding:10px 14px}}@media(max-width:700px){.demo-heading{padding-top:35px}.demo-heading h1{font-size:42px}.demo-layout{grid-template-columns:1fr;gap:25px}.demo-board{max-width:370px;gap:3px}.demo-cell{aspect-ratio:1.38}.piece{inset:3px 6px 2px}.piece .piece-name{font-size:7px;padding:2px}.piece .rank{width:16px;height:16px;line-height:16px;font-size:10px}.board-heading{max-width:370px;margin-left:auto;margin-right:auto}.board-side{padding:12px}.lesson-list{padding-bottom:16px}.lesson-tab{font-size:11px;padding:10px 12px}.demo-progress{margin-bottom:20px}.narrative{min-height:0}.narrative h2{font-size:28px}.demo-controls{position:sticky;bottom:0;background:var(--paper);padding:12px 0;margin-bottom:5px;z-index:5;border-top:1px solid var(--line)}.inspector{margin-top:20px;padding-top:20px}.demo-note{margin-top:25px}.board-legend{justify-content:center;font-size:9px}.lesson-intro{margin-top:5px}.demo-heading .lede{font-size:15px}.demo-cell .coordinate{font-size:7px}.demo-cell .terrain-name{font-size:7px}}
@media(max-width:700px){.demo-shell{padding-bottom:110px}.demo-controls{position:fixed;left:0;right:0;bottom:0;margin:0;padding:12px 22px;box-shadow:0 -4px 15px #24251f10;z-index:30;justify-content:space-between}.demo-controls button{flex:1}.demo-note{padding-bottom:20px}}