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#0d11176b;pointer-events:none}.kbd-badge:after{content:"";position:absolute;left:50%;bottom:-5px;transform:translate(-50%);border:5px solid transparent;border-top-color:var(--primary);border-bottom:0}.kbd-keyrow{position:fixed;transform:translateY(-116%);display:grid;grid-template-columns:repeat(7,1fr);gap:6px;pointer-events:none}.kc-cell{display:flex;justify-content:center;align-items:flex-end}.kc{background:var(--primary);color:var(--on-primary);font-weight:800;font-size:11px;line-height:1;padding:5px;border-radius:8px;white-space:nowrap;box-shadow:0 3px 12px #0006}.kbd-title,.kbd-foot{position:fixed;left:50%;transform:translate(-50%);background:var(--surface);border-radius:999px;box-shadow:var(--shadow);max-width:92vw;text-align:center;white-space:nowrap}.kbd-title{top:calc(12px + env(safe-area-inset-top));color:var(--ink);font-weight:800;font-size:15px;padding:10px 18px}.kbd-foot{bottom:calc(14px + env(safe-area-inset-bottom));color:var(--ink-soft);font-weight:700;font-size:12.5px;padding:9px 15px}.kbd-title b,.kbd-foot b{color:var(--primary)}.kbd-card{position:fixed;transform:translate(-50%,-50%);background:var(--surface);color:var(--ink);border-radius:16px;box-shadow:var(--shadow);padding:14px 16px;width:min(80vw,320px);pointer-events:none}.kbd-card .kc-title{font-weight:800;font-size:12px;text-transform:uppercase;letter-spacing:.5px;color:var(--ink-soft);margin-bottom:8px}.kbd-card .kr{display:flex;align-items:center;gap:11px;padding:7px 0}.kbd-card .kr+.kr{border-top:1px solid var(--surface-2)}.kbd-card .cap{flex:none;min-width:86px;text-align:center;font-weight:800;font-size:12px;color:var(--ink);background:var(--surface-2);border-radius:7px;padding:6px 7px}.kbd-card .lbl{font-size:13px;font-weight:600;color:var(--ink)}.seg{display:flex;background:var(--surface-2);border-radius:12px;padding:4px;gap:4px}.seg button{flex:1;padding:9px;border-radius:9px;font-weight:800;font-size:13px;color:var(--ink-soft)}.seg button.on{background:var(--surface);color:var(--ink);box-shadow:var(--shadow-sm)}.field{margin:14px 0}.field>.flabel{font-weight:800;font-size:13px;margin-bottom:7px;display:block}.theme-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:9px}.theme-swatch{display:flex;align-items:center;gap:10px;padding:9px 11px;border-radius:13px;background:var(--surface-2);box-shadow:var(--shadow-sm);text-align:left;transition:transform .08s ease}.theme-swatch:active{transform:scale(.97)}.theme-swatch.on{box-shadow:inset 0 0 0 2px var(--primary)}.theme-swatch .sw{width:34px;height:34px;border-radius:9px;position:relative;flex:none;overflow:hidden;border:1px solid rgba(128,128,128,.25)}.theme-swatch .sw .num{position:absolute;top:4px;left:6px;font-size:15px;font-weight:800;line-height:1}.theme-swatch .sw .a{position:absolute;left:0;right:0;bottom:0;height:40%}.theme-swatch .name{font-weight:800;font-size:13px}.theme-swatch .check{margin-left:auto;color:var(--primary);font-weight:900;opacity:0}.theme-swatch.on .check{opacity:1}.toggle-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 2px;border-top:1px solid var(--surface-2)}.toggle-row .desc{display:flex;flex-direction:column}.toggle-row .desc .t{font-weight:800;font-size:15px}.toggle-row .desc .d{font-size:12px;color:var(--ink-soft);font-weight:600}.switch{width:48px;height:28px;border-radius:999px;background:var(--board-line);position:relative;transition:background .18s ease;flex:none}.switch.on{background:var(--primary)}.switch:after{content:"";position:absolute;top:3px;left:3px;width:22px;height:22px;border-radius:50%;background:#fff;box-shadow:var(--shadow-sm);transition:transform .18s ease}.switch.on:after{transform:translate(20px)}.learn-list{display:flex;flex-direction:column;gap:18px}.learn-group .gtitle{font-weight:800;font-size:13px;text-transform:uppercase;letter-spacing:.6px;color:var(--ink-soft);margin:0 0 8px;display:flex;align-items:center;gap:8px}.learn-group .gtitle .pip{width:12px;height:12px;border-radius:4px}.learn-cards{display:grid;grid-template-columns:1fr 1fr;gap:9px}.learn-card{text-align:left;background:var(--surface-2);border-radius:14px;padding:13px;box-shadow:var(--shadow-sm);transition:transform .08s ease}.learn-card:active{transform:scale(.97)}.learn-card .lc-name{font-weight:800;font-size:14px;margin-bottom:3px}.learn-card .lc-sub{font-size:11px;color:var(--ink-soft);font-weight:600}.learn-card.locked{opacity:.55}.lesson-detail .mini-board{width:min(78vw,360px);aspect-ratio:1/1;margin:10px auto 14px;background:var(--surface);border-radius:12px;box-shadow:var(--shadow-sm);display:grid;grid-template-columns:repeat(9,1fr);grid-template-rows:repeat(9,1fr);padding:5px}.lesson-detail .step-text{background:var(--surface-2);border-radius:12px;padding:13px 15px;font-size:14px;line-height:1.5;font-weight:600;color:var(--ink);min-height:64px}.lesson-detail .step-text b{color:var(--primary)}.mini-board .mc{position:relative;display:grid;place-items:center;border-right:1px solid var(--board-line);border-bottom:1px solid var(--board-line);font-size:clamp(12px,3.4vw,18px);font-weight:800;color:var(--given)}.mini-board .mc.box-right{border-right:2px solid var(--board-line-strong)}.mini-board .mc.box-bottom{border-bottom:2px solid var(--board-line-strong)}.mini-board .mc.box-left{border-left:2px solid var(--board-line-strong)}.mini-board .mc.box-top{border-top:2px solid var(--board-line-strong)}.mini-board .mc.focus{background:var(--hintlight);box-shadow:inset 0 0 0 2px var(--hard);border-radius:4px}.mini-board .mc.unit{background:var(--peer)}.mini-board .mc.placed{background:var(--selection);box-shadow:inset 0 0 0 2px var(--primary);border-radius:4px;color:var(--primary)}.mini-board .mc .mnotes{position:absolute;inset:8%;display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr)}.mini-board .mc .mnotes span{display:grid;place-items:center;font-size:clamp(6px,1.7vw,9px);font-weight:700;color:var(--note);line-height:1}.mini-board .mc .mnotes span.dig{color:var(--hard);font-weight:800}.mini-board .mc .mnotes span.elim{color:var(--error);text-decoration:line-through;font-weight:800}.mini-board.practice{width:min(88vw,392px)}.mini-board.practice .mc .mnotes span{font-size:clamp(9px,2.5vw,13px)}.mini-board.practice .mc .mnotes span:not(:empty){cursor:pointer;transition:background .1s ease}.mini-board.practice .mc .mnotes span:not(:empty):hover{background:var(--peer)}.mini-board.practice .mc .mnotes span.cross{color:var(--note-cross);background:var(--note-cross-bg);text-decoration:line-through;text-decoration-color:var(--note-cross);font-weight:800}.mini-board.practice .mc .mnotes span.wrong{animation:shake .36s ease;color:var(--error);font-weight:800}.mini-board .mc.advice{box-shadow:inset 0 0 0 3px var(--primary);border-radius:4px;animation:advicePulse 1.1s ease-in-out infinite}@keyframes advicePulse{0%,to{background:var(--selection)}50%{background:transparent}}@keyframes shake{10%,90%{transform:translate(-1px)}30%,70%{transform:translate(2px)}50%{transform:translate(-2px)}}.lesson-detail .stepper{display:flex;gap:10px;margin-top:12px;align-items:center}.lesson-detail .dots{display:flex;gap:6px;flex:1;justify-content:center}.lesson-detail .dots .d{width:8px;height:8px;border-radius:50%;background:var(--board-line)}.lesson-detail .dots .d.on{background:var(--primary)}.toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom));transform:translate(-50%) translateY(20px);background:var(--ink);color:var(--bg);padding:11px 18px;border-radius:999px;font-weight:800;font-size:14px;opacity:0;pointer-events:none;transition:opacity .2s ease,transform .2s ease;z-index:50;box-shadow:var(--shadow)}.toast.show{opacity:1;transform:translate(-50%) translateY(0)}.loading{display:flex;align-items:center;gap:10px;color:var(--ink-soft);font-weight:700}.spinner{width:18px;height:18px;border:3px solid var(--board-line);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.confetti{position:fixed;width:10px;height:14px;top:-20px;z-index:60;pointer-events:none;border-radius:2px}@media (min-width: 760px){.app-shell{max-width:600px;padding-top:24px}.board{width:min(70vh,560px)}}.dev-host{width:100%}.dev-panel{border:1px dashed var(--board-line-strong);border-radius:14px;padding:12px 16px;background:var(--surface);box-shadow:var(--shadow-sm)}@media (min-width: 900px){.dev-panel{width:min(96vw,1180px);margin-left:calc(50% - min(48vw,590px));margin-right:calc(50% - min(48vw,590px))}}.dev-head{display:flex;align-items:center;gap:10px;margin-bottom:10px}.dev-title{font-weight:800;font-size:12px;color:var(--ink-soft);text-transform:uppercase;letter-spacing:.5px;flex:none}.dev-theme{flex:1;min-width:0;font-family:inherit;font-weight:700;font-size:13px;padding:6px 8px;border-radius:8px;background:var(--surface-2);color:var(--ink);border:1px solid var(--board-line)}.dev-meta{display:flex;align-items:center;gap:8px;margin-bottom:10px}.dev-name{flex:1;min-width:0;font-family:inherit;font-weight:700;font-size:13px;padding:6px 8px;border-radius:8px;border:1px solid var(--board-line);background:var(--surface-2);color:var(--ink)}.dev-mini{flex:none;font-family:inherit;font-weight:800;font-size:12px;cursor:pointer;padding:6px 10px;border-radius:8px;border:1px solid var(--board-line);background:var(--surface-2);color:var(--ink)}.dev-mini.danger{color:var(--error)}.dev-mini:disabled{opacity:.4;cursor:default}.dev-rows{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:7px 20px}.dev-row{display:flex;align-items:center;gap:8px}.dev-pick{width:26px;height:26px;padding:0;flex:none;cursor:pointer;border:1px solid var(--board-line);border-radius:6px;background:none}.dev-var{font-size:11px;font-weight:700;color:var(--ink-soft);width:120px;flex:none;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.dev-text{flex:1;min-width:0;font-family:ui-monospace,SFMono-Regular,monospace;font-size:11px;padding:5px 6px;border-radius:6px;border:1px solid var(--board-line);background:var(--surface-2);color:var(--ink)}.dev-alpha{width:50px;flex:none;font-family:ui-monospace,SFMono-Regular,monospace;font-size:11px;padding:5px 4px;border-radius:6px;border:1px solid var(--board-line);background:var(--surface-2);color:var(--ink)}.dev-actions{display:flex;gap:10px;margin-top:12px}