:root{--base: #fafaf6;--surface: #ffffff;--surface-2: #f4f2ec;--line: #e7e3d8;--ink: #24313f;--ink-2: #4b5a6c;--muted: #6c7a8c;--coral: #ff7a59;--plum: #9c6bd6;--sun: #ffc943;--leaf: #3dbb6b;--rose: #ff5b8a;--blue: #3b6fe0;--teal: #2fb9d6;--coral-bg: #fff1ec;--plum-bg: #f5eefc;--sun-bg: #fff7dc;--leaf-bg: #e9f8ef;--blue-bg: #eaf1ff;--grad-primary: linear-gradient(135deg, #4f8cff 0%, #2fb9d6 100%);--grad-go: linear-gradient(135deg, #3dbb6b 0%, #2fb98f 100%);--grad-ai: linear-gradient(135deg, #7b5cff 0%, #3b6fe0 100%);--r-sm: 8px;--r-md: 14px;--r-lg: 20px;--r-pill: 999px;--sh-card: 0 4px 0 -2px var(--line);--sh-lift: 0 8px 28px rgba(0, 0, 0, .12);--focus: #ffb020;--font: "Noto Sans KR", "Malgun Gothic", "Apple SD Gothic Neo", sans-serif;--accent: var(--blue);--error: #c2412a;--core: var(--leaf);--extra: 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72px}.app.wide{max-width:1680px}.stack>*+*{margin-top:14px}.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.between{justify-content:space-between}.muted{color:var(--muted)}.small{font-size:.85rem}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:18px 20px;box-shadow:var(--sh-card)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:42px;padding:8px 16px;border-radius:10px;border:1.5px solid var(--line);background:var(--surface);color:var(--ink);font-weight:700;cursor:pointer;transition:transform .08s,box-shadow .15s,border-color .15s}.btn:hover:not(:disabled){border-color:#c9d5ea;box-shadow:0 2px 8px #0000000f}.btn:active:not(:disabled){transform:translateY(1px)}.btn:disabled{opacity:.45;cursor:not-allowed}.btn.primary{background:var(--grad-primary);color:#fff;border-color:transparent;box-shadow:0 3px 0 -1px #2a62c9}.btn.go{background:var(--grad-go);color:#fff;border-color:transparent;box-shadow:0 3px 0 -1px #2b9152}.btn.outline-blue{border-color:#a9c2f5;color:var(--blue);background:var(--blue-bg)}.btn.outline-coral{border-color:#ffc2b1;color:#d4512f;background:#fff}.btn.ghost{border-color:transparent;background:transparent}.btn.big{min-height:52px;padding:10px 22px;font-size:1.05rem;border-radius:12px}.btn.sm{min-height:34px;padding:4px 10px;font-size:.85rem;border-radius:8px}.chip,.badge{display:inline-flex;align-items:center;gap:4px;padding:2px 10px;border-radius:var(--r-pill);font-size:.78rem;font-weight:700;border:1px solid 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#dbe6ff}.digits{font-size:1.8rem;letter-spacing:.4em;text-align:center;font-weight:800;font-family:ui-monospace,Consolas,monospace}.entry{max-width:440px;margin:28px auto}.entry .lesson-name{font-size:1.25rem;font-weight:800}.tabs{display:flex;gap:6px;justify-content:center;margin:8px 0 0;background:var(--surface-2);padding:4px;border-radius:12px;width:max-content;margin-inline:auto}.tabs .btn{border:0;background:transparent;min-height:38px}.tabs .btn[aria-pressed=true]{background:var(--surface);box-shadow:0 1px 4px #00000014;color:var(--blue)}.objective{border-radius:var(--r-md);padding:12px 16px;background:var(--blue-bg);border:1px solid #cddaf6}.objective strong{display:block;font-size:.8rem;color:var(--blue);margin-bottom:2px}.banner{border-radius:var(--r-md);padding:14px 16px;font-weight:700}.banner.wait{background:var(--sun-bg);border:1px solid #f2dc95;color:#7a5800}.banner.pause{background:var(--coral-bg);border:1px solid #ffc9b8;color:#a83b22}.steps{list-style:none;margin:0;padding:0;display:grid;gap:10px}.step-card{display:grid;grid-template-columns:44px 1fr auto;gap:12px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:12px 14px;box-shadow:var(--sh-card)}.step-num{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;font-weight:900;background:var(--blue-bg);color:var(--blue)}.step-card.done .step-num{background:var(--leaf-bg);color:#23854a}.passage{font-size:1.12rem;line-height:1.95;background:var(--surface);border:1px solid var(--line);border-left:6px solid var(--sun);border-radius:var(--r-md);padding:20px 24px;box-shadow:var(--sh-card)}.passage h3{font-size:.95rem;color:var(--muted);font-weight:700}.monitor{background:var(--plum-bg);border:1px solid #e2d3f5;border-radius:var(--r-md);padding:12px 16px}.options{display:grid;gap:8px}.option{display:flex;gap:10px;align-items:flex-start;padding:10px 14px;border:1.5px solid 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span{font-weight:500;font-size:.8rem;color:var(--muted)}.sentence{display:block;width:100%;text-align:left;margin:0 0 8px;padding:11px 14px;min-height:46px;border-radius:12px;border:1.5px solid var(--line);background:var(--surface);cursor:grab;line-height:1.6;box-shadow:var(--sh-card);font-weight:500;transition:transform .1s,box-shadow .15s,border-color .15s}.sentence:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 14px #00000014}.sentence[aria-pressed=true]{border-color:var(--blue);box-shadow:0 0 0 3px #dbe6ff;transform:translateY(-2px)}.sentence.in-core{background:var(--leaf-bg);border-left:5px solid var(--leaf)}.sentence.in-extra{background:var(--sun-bg);border-left:5px solid var(--sun)}.sentence.locked{cursor:default}.sentence .tag{display:inline-block;font-size:.75rem;margin-right:6px;padding:0 6px;border-radius:6px;background:var(--surface-2);color:var(--muted)}.actionbar{position:sticky;bottom:0;z-index:10;background:#fafaf6f0;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);padding:12px 0;border-top:1px solid var(--line);display:flex;gap:8px;flex-wrap:wrap;align-items:center}.feedback{list-style:none;margin:0;padding:0;display:grid;gap:8px}.feedback li{padding:12px 14px;border-radius:12px;border:1px solid var(--line);font-weight:500}.feedback li.error{background:var(--coral-bg);border-color:#ffc9b8}.feedback li.praise{background:var(--leaf-bg);border-color:#b9e6c9}.feedback li.info{background:var(--blue-bg);border-color:#cddaf6}.feedback .label{font-weight:800;margin-right:6px}.hints{margin:0;padding-left:20px}.solution table{width:100%;border-collapse:collapse}.solution th,.solution td{text-align:left;padding:8px;border-bottom:1px solid var(--line);vertical-align:top}.solution th{font-size:.8rem;color:var(--muted)}.solution 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var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-card)}.panel-head{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:14px 18px;font-weight:800;border-bottom:1px solid var(--line)}.panel.prep .panel-head{background:#f1f4ff;color:#2e4fae}.panel.live .panel-head{background:#e8faf0;color:#1f7a45}.panel.done .panel-head{background:#f4f3f8;color:#4b4f66}.panel-body{padding:14px;display:grid;gap:10px;max-height:calc(100vh - 170px);overflow:auto}.live-dot{width:8px;height:8px;border-radius:50%;background:var(--leaf);display:inline-block;box-shadow:0 0 0 4px #c9f0d8}.source{display:grid;grid-template-columns:40px 1fr auto;gap:12px;align-items:center;border:2px dashed #c9d5f2;border-radius:var(--r-md);padding:12px 14px;background:#fbfcff}.source .icon{font-size:1.6rem;text-align:center}.source.disabled{opacity:.55}.unit-card{border:1.5px solid #f2dc95;background:#fffdf3;border-radius:var(--r-md);padding:14px;display:grid;gap:8px}.lesson-card{border:1.5px solid var(--line);border-radius:var(--r-md);padding:14px;display:grid;gap:10px;background:var(--surface)}.lesson-card.open{border-color:#9fdcb6;background:#f7fdf9}.lesson-card.paused{border-color:#ffc9b8;background:#fffaf8}.lesson-card.ready{border-color:#c8d7f8;background:#f8faff}.lesson-title{font-weight:800;font-size:1.02rem}.lesson-meta{font-size:.82rem;color:var(--muted)}.overlay{position:fixed;inset:0;z-index:50;background:#141c288c;display:grid;place-items:center;padding:16px}.dialog{background:var(--surface);border-radius:var(--r-lg);padding:24px;width:min(720px,100%);max-height:calc(100vh - 32px);overflow:auto;box-shadow:var(--sh-lift)}.qr-wrap{display:grid;grid-template-columns:auto 1fr;gap:24px;align-items:center}@media(max-width:640px){.qr-wrap{grid-template-columns:1fr;justify-items:center;text-align:center}}.qr-wrap img{width:280px;height:280px;image-rendering:pixelated;border-radius:12px;border:1px solid var(--line)}.big-code{font-size:3rem;font-weight:900;letter-spacing:.18em;font-family:ui-monospace,Consolas,monospace;color:var(--blue)}.stage-chips{display:flex;flex-wrap:wrap;gap:8px}.stage-chip{display:inline-flex;align-items:center;gap:6px;padding:8px 12px;border-radius:12px;border:1.5px solid var(--line);background:var(--surface);font-weight:700;cursor:pointer}.stage-chip[aria-pressed=true]{border-color:var(--blue);background:var(--blue-bg);color:var(--blue)}.stage-chip:disabled{cursor:not-allowed;opacity:.55;background:var(--surface-2)}.stage-chip .n{width:22px;height:22px;border-radius:6px;display:grid;place-items:center;font-size:.75rem;background:var(--surface-2)}.stage-chip[aria-pressed=true] .n{background:var(--blue);color:#fff}.notice{background:var(--sun-bg);border:1px solid #f2dc95;border-radius:12px;padding:10px 14px;margin:0}.errbar{display:grid;grid-template-columns:200px 1fr 56px;gap:10px;align-items:center}.errbar-track{height:12px;background:var(--surface-2);border-radius:6px;overflow:hidden}.errbar-fill{display:block;height:100%;background:linear-gradient(90deg,var(--sun),var(--coral))}.errbar-n{text-align:right;color:var(--muted);font-weight:700}@media(max-width:640px){.errbar{grid-template-columns:1fr 48px}.errbar-track{display:none}}table.results{width:100%;border-collapse:collapse;min-width:1040px}table.results th{font-size:.8rem;color:var(--muted)}table.results th,table.results td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line);vertical-align:top}table.results .chip{margin:4px 4px 0 0}.status{font-weight:800;white-space:nowrap}table.results td{min-width:112px}.status.not_started{color:var(--muted);font-weight:500}.status.in_progress{color:var(--blue)}.status.completed{color:#23854a}.item{border:1px solid var(--line);border-radius:12px;padding:10px 14px;background:var(--surface)}.item summary{cursor:pointer}.written{margin:6px 0 0;padding:8px 10px;border-left:3px solid var(--plum);background:var(--base);border-radius:6px}.list{list-style:none;margin:0;padding:0;display:grid;gap:10px}@media(prefers-reduced-motion:reduce){*{transition:none!important}}.field input::placeholder{color:#c3c9d2;font-weight:500}.entry form .btn.big{width:100%}@media(max-width:560px){.topbar{padding:8px 12px}.logo{font-size:1.05rem}.logo .sub{display:none}.topbar .row{gap:6px;justify-content:flex-end}.app{padding:14px 12px 72px}.passage{padding:16px;font-size:1.05rem}}@media(max-width:560px){.actionbar{gap:6px;padding:8px 0}.actionbar .btn{min-height:38px;padding:6px 10px;font-size:.9rem}.actionbar>.muted{display:none}}.blocks{display:grid;grid-template-columns:1fr 2fr;gap:14px}.block-group{display:flex;flex-direction:column;gap:8px}.block-group h3{margin:0;font-size:14px;color:var(--muted)}.block{text-align:left;padding:10px 14px;border-radius:12px;border:2px solid var(--line);background:var(--surface);font:inherit;cursor:pointer;line-height:1.5}.block:hover:not(:disabled){border-color:var(--plum)}.block[aria-checked=true].subj{border-color:var(--coral);background:var(--coral-bg)}.block[aria-checked=true].pred{border-color:var(--plum);background:var(--plum-bg)}.block[aria-checked=true]:before{content:"✓ ";font-weight:700}.block:disabled{cursor:default;opacity:.85}.block .tag{display:block;font-size:12px;color:var(--muted)}.assembled{padding:12px 14px;border-radius:12px;background:var(--base);border:2px dashed var(--line);font-size:17px}.assembled .subj{color:#c24d2c;font-weight:700}.assembled .pred{color:var(--plum);font-weight:700}.assembled .blank{color:var(--muted)}.own-words{width:100%;font:inherit;font-size:16px;padding:10px 12px;border-radius:12px;border:2px solid var(--line);resize:vertical;box-sizing:border-box}.own-words:focus{outline:none;border-color:var(--plum)}@media(max-width:700px){.blocks{grid-template-columns:1fr}}.compare{display:flex;flex-wrap:wrap;gap:10px}.compare-cell{display:flex;flex-direction:column;gap:2px;padding:10px 14px;border-radius:var(--r-md);background:var(--plum-bg);min-width:170px}.rubric{display:flex;flex-direction:column;gap:8px;padding:10px 12px;border-radius:var(--r-md);background:var(--surface-2)}.rubric-row{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}.hl{border-radius:4px;padding:1px 3px}.hl.topic{background:var(--sun-bg);box-shadow:inset 0 -2px 0 var(--sun)}.hl.core{background:var(--leaf-bg);box-shadow:inset 0 -2px 0 var(--leaf)}.hl.extra{background:var(--surface-2);color:var(--muted);text-decoration:line-through;text-decoration-color:#6c7a8c80}.hl-tag{font-size:11px;font-weight:700;color:var(--ink-2);margin-left:2px}.think{position:relative;padding:14px 16px;border-radius:var(--r-md);background:var(--blue-bg);border:2px solid #c8d7f8}.think p{margin:4px 0}.think-who{font-weight:700;color:var(--blue)}.worked.big .passage,.worked.big .think,.worked.big .gist{font-size:1.35rem;line-height:1.8}.worked.big h2{font-size:1.8rem}.dialog.wide{width:min(1240px,100%)}.map-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-md)}table.lit-map{border-collapse:collapse;width:100%;min-width:1000px;font-size:.86rem}table.lit-map th,table.lit-map td{border-bottom:1px solid var(--line);padding:8px;vertical-align:top;text-align:left}table.lit-map thead th{background:var(--surface-2);font-weight:800}table.lit-map thead th:first-child,table.lit-map tbody th{width:14%}table.lit-map tbody th{background:var(--surface-2);font-weight:800}.map-cell{display:grid;gap:6px;padding:8px;border-radius:10px;min-height:92px;align-content:start;color:var(--muted);background:var(--surface);border:1.5px dashed var(--line);width:100%;text-align:left;font:inherit}.map-cell .chip{justify-self:start}.map-cell.ready{color:var(--ink);border:1.5px solid #b9e6c9;background:var(--leaf-bg);cursor:pointer}.map-cell.ready:hover,.map-cell.ready:focus-visible{border-color:var(--leaf);outline:none;box-shadow:0 0 0 3px #cdeed9}.map-entry{border:1.5px solid #c8d7f8;background:var(--blue-bg);border-radius:var(--r-md);padding:14px;display:grid;gap:8px}.step-card.locked{opacity:.6;background:var(--surface-2)}.step-card.current{border-color:var(--blue);box-shadow:0 0 0 3px #dbe6ff}.create-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}table.lit-map.compact{min-width:900px;font-size:.8rem}table.lit-map.compact .map-cell{min-height:64px}.map-cell.selected{border-color:var(--blue);background:var(--blue-bg);box-shadow:0 0 0 3px #dbe6ff}.dash-head{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between}.step-bar{display:grid;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:12px 14px}.step-bar ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}.step-pill{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;border:1.5px solid var(--line);font-weight:700;font-size:.88rem;background:var(--surface)}.step-pill .n{font-weight:900}.step-pill.opened{border-color:#b9e6c9;background:var(--leaf-bg)}.step-pill.current{border-color:var(--blue);background:var(--blue-bg);color:var(--blue);box-shadow:0 0 0 3px #dbe6ff}.step-pill.locked{color:var(--muted);background:var(--surface-2);border-style:dashed}.dash-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:16px;align-items:start}@media(max-width:960px){.dash-grid{grid-template-columns:1fr}}.dash-passage{max-height:calc(100vh - 260px);overflow:auto}.dash-para h3{margin:10px 0 4px;font-size:.95rem;color:var(--muted);display:flex;align-items:center;gap:6px}.dash-para p{margin:0;line-height:1.9;font-size:1.02rem}.dash-passage.big .dash-para p{font-size:1.35rem;line-height:2}.para-n{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:8px;background:var(--sun-bg);color:#8a6300;font-weight:900;font-size:.8rem}.dash-live{display:grid;gap:10px}.live-table{border-collapse:collapse;width:100%;font-size:.88rem}.live-table th,.live-table td{border-bottom:1px solid var(--line);padding:6px 8px;text-align:center}.live-table tbody tr{cursor:pointer}.live-table tbody tr:hover{background:var(--blue-bg)}.live-table td:last-child{text-align:left}.live-table .cell-completed{color:#23854a;font-weight:900}.live-table .cell-in_progress{color:var(--blue);font-weight:900}.live-table .cell-not_started{color:var(--muted)}.live-table .locked{background:var(--surface-2);color:var(--muted)}.table-wrap{overflow-x:auto}.dash-live .banner{background:var(--blue-bg);border:1px solid #cddaf6;color:var(--ink);font-weight:600}