:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#f5f6f8;--surface:#fff;--surface-2:#eef0f4;--text:#18202d;--muted:#5a6475;--border:#dde1e8;--pen:#2445b8;--pen-text:#fff;--pen-soft:#e6ebfa;--good:#1d7a46;--good-soft:#e3f4ea;--bad:#b3261e;--bad-soft:#fbe9e7;--warn:#8a5a00;--code-bg:#f0f2f6;--radius:14px;--tap:52px;--font:system-ui, -apple-system, "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", sans-serif;--mono:ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#12161e;--surface:#1a1f2a;--surface-2:#232a37;--text:#e7eaf0;--muted:#a3acbb;--border:#2e3644;--pen:#8ea6ff;--pen-text:#0d1430;--pen-soft:#1f2a4d;--good:#6fd29b;--good-soft:#15301f;--bad:#ff8a80;--bad-soft:#3a1a18;--warn:#f0c060;--code-bg:#10141b}}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--text);font:16px/1.6 var(--font);-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent;margin:0}h1{margin:8px 0 12px;font-size:1.5rem;line-height:1.3}h2{color:var(--muted);margin:28px 0 8px;font-size:1rem}a{color:var(--pen)}button,input,textarea{font:inherit;color:inherit}.app{max-width:34rem;padding:max(16px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) calc(88px + env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));min-height:100dvh;margin:0 auto}.app.review-mode{padding-bottom:max(16px, env(safe-area-inset-bottom))}.screen{flex-direction:column;gap:4px;display:flex}.center{place-items:center;min-height:60dvh;display:grid}.muted{color:var(--muted)}.small{font-size:.875rem}.big{margin:0;font-size:1.75rem;font-weight:700;line-height:1.3}.hero{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);margin:8px 0;padding:28px 20px}.hero p{margin:4px 0 0}.button{min-height:var(--tap);border-radius:var(--radius);border:1px solid 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var(--border);color:var(--text);background:var(--surface-2);border-radius:0 8px 8px 0;margin:8px 0;padding:8px 12px}.back{color:var(--muted);align-self:flex-start;padding:8px 0;text-decoration:none}.label{border-radius:6px;padding:2px 8px;font-size:.8125rem;font-weight:700;display:inline-block}.label-맞음{background:var(--good-soft);color:var(--good)}.label-틀림{background:var(--bad-soft);color:var(--bad)}.label-애매,.label-빠짐{background:var(--surface-2);color:var(--warn)}.mine{background:var(--surface-2);color:var(--warn);border-radius:999px;margin-left:8px;padding:1px 8px;font-size:.75rem;font-weight:700;display:inline-block}.code{background:var(--code-bg);border:1px solid var(--border);white-space:pre;font:.875rem/1.5 var(--mono);-webkit-overflow-scrolling:touch;border-radius:10px;margin:12px 0;padding:12px 14px;overflow-x:auto}.options{margin:4px 0;padding-left:18px}.options .right{color:var(--good);font-weight:600}.card-row.suspended{opacity:.6}.card-row p{margin:6px 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(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}.login-code{letter-spacing:.08em;text-align:center;font-size:1.5rem}.invites{margin-top:16px}.invites>li{justify-content:space-between;align-items:center;gap:12px;display:flex}.invites p{margin:0}.kbd-hint{text-align:center;margin:16px 0 0;display:none}@media (hover:hover) and (pointer:fine){.kbd-hint{display:block}}.answer-input{border:1px solid var(--border);background:var(--surface);resize:vertical;border-radius:12px;width:100%;padding:12px 14px;line-height:1.6}.answer-input[readonly]{background:var(--surface-2)}.checklist{flex-direction:column;gap:4px;margin:4px 0 8px;padding:0;list-style:none;display:flex}.checklist label{align-items:center;gap:8px;min-height:36px;display:flex}.grades{grid-template-columns:repeat(4,1fr);gap:8px;margin-top:12px;display:grid}.grade{border-radius:var(--radius);border:2px solid 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var(--border);border-radius:var(--radius);-webkit-overflow-scrolling:touch;max-height:70dvh;overflow:auto}.map{margin:0 auto;display:block}.map .edge{stroke:var(--border);stroke-width:1.5px}.map .edge.contrast{stroke-dasharray:4 3}.map .node{cursor:pointer}.map .node circle{stroke-width:2px}.map .node.familiar circle{fill:var(--good);stroke:var(--good)}.map .node.shaky circle{fill:var(--warn);stroke:var(--warn)}.map .node.unlearned circle{fill:var(--surface);stroke:var(--muted);stroke-dasharray:3 2}.map .node text{fill:var(--text);font-size:11px}.chip.state-familiar{background:var(--good-soft);color:var(--good)}.chip.state-shaky{background:var(--surface-2);color:var(--warn)}.chip.state-unlearned{border:1px dashed var(--muted);color:var(--muted);background:0 0}a.chip{padding:6px 12px;text-decoration:none}.league>li{align-items:center;gap:12px;display:flex}.league .rank{width:1.5em;color:var(--muted);font-weight:800}.league .name{flex:1}.league .xp{font-variant-numeric:tabular-nums;font-weight:700}.league .me{border-color:var(--pen);background:var(--pen-soft)}.segmented{flex-wrap:wrap;gap:6px;display:flex}.segmented button{border:1px solid var(--border);background:var(--surface);cursor:pointer;border-radius:999px;min-width:56px;min-height:44px;padding:0 12px}.segmented button.current{background:var(--pen);border-color:var(--pen);color:var(--pen-text);font-weight:700}.ai-button{width:100%;margin:8px 0}.ai-result{margin:8px 0}.ai-result q{quotes:"“" "”"}.coach-question{background:var(--pen-soft);color:var(--text);border-radius:10px;margin:8px 0;padding:10px 12px}.onboarding{background:var(--pen-soft);border-radius:var(--radius);margin:4px 0 8px;padding:4px 16px 8px}.onboarding h2{color:var(--pen);margin-top:12px}.onboarding a{color:var(--text);padding:6px 0;text-decoration:none;display:block}.onboarding .done a{color:var(--good)}.danger{border:1px solid var(--bad);border-radius:var(--radius);margin-top:12px;padding:12px 14px}.danger p{margin:0}.button.danger-button{background:var(--bad);border-color:var(--bad);color:#fff}.field select{min-height:var(--tap);border:1px solid var(--border);background:var(--surface);border-radius:12px;padding:0 12px}