.teach .mt-x-main{flex-direction:column;align-items:center;gap:10px}.teach .mt-x-wrap{position:relative}.teach .mt-x-modes{grid-template-columns:1fr 1fr;gap:8px;display:grid}.teach .mt-x-modes .mt-btn{width:100%;padding:0 10px;line-height:1.15}.teach .mt-x-modes .mt-x-call{grid-column:1/-1}.teach .mt-x-twin{border-left:4px dashed var(--link);padding-left:8px;font-size:15px}.teach .mt-x-hint{color:var(--warn);font-size:15px;font-weight:600}.teach .mt-x-find{color:var(--ink);font-size:18px;font-weight:600}.teach .mt-x .mt-cell{transition:background-color .25s,opacity .25s,transform .2s}.teach .mt-x .mt-cell.is-twin{outline:3px dashed var(--link);outline-offset:-4px;font-weight:800}.teach .mt-x .mt-cell.is-found{outline:4px solid var(--stop);outline-offset:-4px;z-index:1;font-weight:800;position:relative}.teach .mt-x .mt-cell.is-known{background-color:color-mix(in srgb, var(--good) 40%, var(--card));background-image:linear-gradient(135deg, transparent 0 70%, color-mix(in srgb, var(--good) 55%, transparent) 70% 100%);font-weight:800;position:relative}.teach .mt-x .mt-cell.is-known:after{content:"✓";color:var(--ink);font-size:.62em;line-height:1;position:absolute;top:1px;right:3px}.teach .mt-x .mt-cell.is-part-a{background-color:color-mix(in srgb, var(--link) 30%, var(--card));background-image:repeating-linear-gradient(45deg, transparent 0 7px, color-mix(in srgb, var(--link) 22%, transparent) 7px 10px)}.teach .mt-x .mt-cell.is-part-b{background-color:color-mix(in srgb, var(--accent) 42%, var(--card));background-image:radial-gradient(color-mix(in srgb, var(--ink) 22%, transparent) 1.5px, transparent 2px);background-size:9px 9px}.teach .mt-x .mt-cell.is-part-take{background-color:color-mix(in srgb, var(--stop) 26%, var(--card));background-image:repeating-linear-gradient(-45deg, transparent 0 5px, color-mix(in srgb, var(--stop) 40%, transparent) 5px 8px);text-decoration:line-through;text-decoration-thickness:3px}.teach .mt-x .mt-cell.is-play{background:var(--good);color:var(--paper);z-index:2;border-color:var(--ink);font-weight:800;animation:.35s ease-out mt-x-pop;position:relative;transform:scale(1.18)}.teach .mt-x .mt-cell.is-played{background-color:color-mix(in srgb, var(--good) 30%, var(--card));font-weight:700}@keyframes mt-x-pop{0%{transform:scale(.9)}55%{transform:scale(1.3)}to{transform:scale(1.18)}}.teach .mt-x .mt-cell.is-gone{opacity:.16;color:#0000;pointer-events:auto;background:0 0;border-style:dashed}.teach .mt-x .mt-cell.is-doubled{box-shadow:3px 3px 0 color-mix(in srgb, var(--link) 55%, transparent);border-color:color-mix(in srgb, var(--link) 70%, var(--rule))}.teach .mt-fold-stage{perspective:1800px;pointer-events:none;z-index:3;position:absolute;inset:0}.teach .mt-fold-flap{transform-origin:0 0;transform-style:preserve-3d;transition:transform .95s cubic-bezier(.45,.05,.25,1);position:absolute;transform:rotate3d(1,1,0,0)}.teach .mt-fold-flap.is-turned{transform:rotate3d(1,1,0,180deg)}.teach .mt-fold-face{backface-visibility:hidden;transform-origin:0 0;gap:2px;display:grid;position:absolute;inset:0}.teach .mt-fold-back{transform:rotate3d(1,1,0,180deg)}.teach .mt-fold-cell{border:1px solid var(--ink);background:var(--card);color:var(--ink);font-variant-numeric:tabular-nums;border-radius:3px;justify-content:center;align-items:center;font-weight:700;line-height:1;display:flex}.teach .mt-fold-front .mt-fold-cell{box-shadow:0 0 0 1px var(--rule)}.teach .mt-fold-back .mt-fold-cell{background:color-mix(in srgb, var(--link) 26%, var(--card));border-color:var(--link)}.teach .mt-fold-count{z-index:2;pointer-events:none;text-align:center;color:var(--ink);flex-direction:column;justify-content:center;align-items:center;line-height:1.05;animation:.5s ease-out mt-x-fade;display:flex;position:absolute}.teach .mt-fold-count b{font-variant-numeric:tabular-nums;font-size:2.6em;font-weight:800}.teach .mt-fold-count span{color:var(--muted);font-size:1em;font-weight:700}@keyframes mt-x-fade{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}.teach .mt-break-ov{pointer-events:none;z-index:2;gap:2px;display:grid;position:absolute}.teach .mt-break-part{border:4px solid var(--link);text-align:center;border-radius:6px;justify-content:center;align-items:center;padding:2px;display:flex}.teach .mt-break-part span{background:var(--card);color:var(--ink);font-variant-numeric:tabular-nums;white-space:nowrap;border:2px solid;border-radius:6px;padding:.1em .35em;font-weight:800;line-height:1.1}.teach .mt-break-part.tone-a{border-color:var(--link)}.teach .mt-break-part.tone-a span{color:var(--link)}.teach .mt-break-part.tone-b{border-color:var(--accent);border-style:dashed}.teach .mt-break-part.tone-b span{color:var(--ink);border-color:var(--accent)}.teach .mt-break-part.tone-take{border-color:var(--stop);border-style:dotted}.teach .mt-break-part.tone-take span{color:var(--stop)}.teach .mt-break-line{flex-direction:column;gap:6px;display:flex}.teach .mt-break-name{letter-spacing:.05em;text-transform:uppercase;color:var(--muted);font-size:13px;font-weight:700}.teach .mt-break-say{font-size:clamp(18px,2.6vh,28px);font-weight:700;line-height:1.25}.teach .mt-break-math{color:var(--muted);font-variant-numeric:tabular-nums;font-size:15px}.teach .mt-known-count{margin:0;font-size:18px}.teach .mt-known-count b{font-variant-numeric:tabular-nums;font-size:clamp(28px,4.4vh,44px)}.teach .mt-known-bar{border:2px solid var(--ink);background:var(--card);border-radius:8px;height:14px;overflow:hidden}.teach .mt-known-bar span{background:var(--good);height:100%;transition:width .4s;display:block}.teach .mt-x .mt-cell.is-dim{opacity:.38;color:#0000}.teach .mt-x .mt-cell.is-spot{background:var(--accent);color:#1d2733;border:3px solid var(--ink);z-index:3;box-shadow:0 0 0 4px var(--card), 0 0 0 8px var(--ink);animation:1.4s ease-in-out infinite mt-x-spot;position:relative;transform:scale(1.22)}.teach .mt-x .mt-cell.is-twinglow{outline:4px dashed var(--accent);outline-offset:-4px}.teach .mt-x .mt-cell.is-px{background:var(--px);color:var(--pxt);border-color:color-mix(in srgb, var(--px) 70%, #000);opacity:1;font-weight:800;animation:.5s ease-out mt-x-paint}.teach .mt-x .mt-cell.is-px.is-spot{box-shadow:0 0 0 4px var(--card), 0 0 0 8px var(--ink);animation:.5s ease-out mt-x-paint}.teach .mt-x .mt-cell.is-px.is-bloom{animation:.6s ease-out both mt-x-bloom;animation-delay:calc(var(--d,0) * 55ms);color:color-mix(in srgb, var(--pxt) 45%, transparent);border-color:var(--px);border-radius:0}.teach .mt-x .mt-table:has(.is-bloom){border-spacing:0}@keyframes mt-x-spot{0%,to{transform:scale(1.16)}50%{transform:scale(1.3)}}@keyframes mt-x-paint{0%{filter:brightness(1.6);transform:scale(.6)rotate(-8deg)}70%{transform:scale(1.12)}to{filter:none;transform:none}}@keyframes mt-x-bloom{0%{opacity:0;transform:scale(.2)}70%{opacity:1;transform:scale(1.15)}to{opacity:1;transform:none}}.teach .mt-call,.teach .mt-look{flex-direction:column;gap:12px;display:flex}.teach .mt-call-head{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;display:flex}.teach .mt-call-head h2{font-size:22px}.teach .mt-call-chips{grid-template-columns:repeat(6,1fr);gap:6px;display:grid}.teach .mt-call-chips button{border:2px solid var(--ink);background:var(--card);min-height:52px;color:var(--ink);border-radius:8px;font-size:18px;font-weight:700}.teach .mt-call-chips button[aria-pressed=true]{background:var(--ink);color:var(--paper)}.teach .mt-call-go{min-height:72px;font-size:22px}.teach .mt-call-progress{color:var(--muted);margin:0;font-size:15px;font-weight:600}.teach .mt-call-ringbox{aspect-ratio:1;align-self:center;width:min(100%,300px);position:relative}.teach .mt-call-ring{width:100%;height:100%;position:absolute;inset:0;transform:rotate(-90deg)}.teach .mt-call-ring-track{fill:none;stroke:var(--rule);stroke-width:7px}.teach .mt-call-ring-fill{fill:none;stroke:var(--link);stroke-width:7px;stroke-linecap:round;stroke-dashoffset:0;animation:mt-x-ring var(--think,5s) linear forwards}.teach .mt-call-ring-fill.is-out{stroke:var(--accent)}@keyframes mt-x-ring{0%{stroke-dashoffset:0}to{stroke-dashoffset:var(--ring)}}.teach .mt-call-q{font-variant-numeric:tabular-nums;letter-spacing:-.02em;justify-content:center;align-items:center;font-size:clamp(48px,9vh,92px);font-weight:800;display:flex;position:absolute;inset:0}.teach .mt-call-left{text-align:center;color:var(--muted);font-size:20px;font-weight:700;position:absolute;bottom:18%;left:0;right:0}.teach .mt-call-answer{text-align:center;border:3px solid var(--ink);background:var(--card);border-radius:12px;flex-direction:column;align-items:center;gap:4px;padding:18px 8px;animation:.3s ease-out mt-x-fade;display:flex}.teach .mt-call-answer>span{font-variant-numeric:tabular-nums;font-size:clamp(44px,8vh,84px);font-weight:800;line-height:1.05}.teach .mt-call-answer b{color:var(--good)}.teach .mt-call-answer small{color:var(--muted);font-size:17px}.teach .mt-call-done{margin:0;font-size:clamp(28px,5vh,48px);font-weight:800;line-height:1.1;animation:.5s ease-out mt-x-fade}.teach .mt-call-teams{grid-template-columns:1fr 1fr;gap:8px;display:grid}.teach .mt-call-team{border:2px solid var(--ink);background:var(--card);border-radius:10px;flex-direction:column;align-items:center;gap:4px;padding:8px;display:flex}.teach .mt-call-team b{font-variant-numeric:tabular-nums;font-size:clamp(36px,6vh,64px);line-height:1}.teach .mt-call-team-name{align-items:center;gap:6px;font-weight:700;display:inline-flex}.teach .mt-call-team-mark{border:2px solid var(--ink);width:16px;height:16px;display:inline-block}.teach .mt-call-team.team-0 .mt-call-team-mark{background:var(--link);border-radius:50%}.teach .mt-call-team.team-1 .mt-call-team-mark{background:var(--accent);border-radius:2px}.teach .mt-call-team .mt-btn{min-height:44px;padding:0 10px}.teach .mt-look-list{grid-template-columns:1fr 1fr;gap:6px;display:grid}.teach .mt-look-list button{text-align:left;border:1px solid var(--rule);background:var(--card);min-height:48px;color:var(--ink);border-radius:8px;align-items:center;gap:8px;padding:6px 8px;font-size:14.5px;font-weight:600;line-height:1.2;display:flex}.teach .mt-look-list button[aria-pressed=true]{border:2px solid var(--ink);background:var(--tint)}.teach .mt-look-num{background:var(--ink);width:26px;height:26px;color:var(--paper);border-radius:50%;flex:none;justify-content:center;align-items:center;font-size:13px;display:inline-flex}.teach .mt-look-card{border:2px solid var(--ink);background:var(--card);border-radius:10px;flex-direction:column;gap:10px;padding:12px;display:flex}.teach .mt-look-card h3{font-size:19px}.teach .mt-look-q{margin:0;font-size:17px;line-height:1.4}.teach .mt-look-why{border-left:4px solid var(--good);margin:0;padding-left:10px;font-size:15.5px;line-height:1.45}.teach .mt-look-board{border:3px solid var(--ink);background:var(--card);border-radius:12px;align-items:center;gap:14px;width:min(100%,900px);padding:12px 16px;animation:.35s ease-out mt-x-fade;display:flex}.teach .mt-look-board p{flex:1;margin:0;font-size:clamp(22px,3.6vh,40px);font-weight:700;line-height:1.25}.teach.is-projector .mt-x-modes .mt-btn,.teach.is-projector .mt-call-chips button,.teach.is-projector .mt-look-list button{min-height:64px;font-size:19px}.teach.is-projector .mt-call-go{min-height:80px;font-size:26px}@media (max-width:860px){.teach .mt-call-chips{grid-template-columns:repeat(4,1fr)}}@media (prefers-reduced-motion:reduce){.teach .mt-x .mt-cell,.teach .mt-fold-flap,.teach .mt-known-bar span{transition:none}.teach .mt-x .mt-cell.is-play,.teach .mt-x .mt-cell.is-spot,.teach .mt-x .mt-cell.is-px,.teach .mt-x .mt-cell.is-px.is-bloom,.teach .mt-fold-count,.teach .mt-call-answer,.teach .mt-call-done,.teach .mt-look-board{animation:none}.teach .mt-x .mt-cell.is-play,.teach .mt-x .mt-cell.is-spot{transform:none}.teach .mt-call-ring-fill{animation:none}}.teach .mt-x .mt-btn[aria-pressed=true]:hover:not(:disabled){background:var(--ink);color:var(--paper)}