@font-face{font-family:LingoSans;src:url("PretendardVariable.woff2") format("woff2");font-weight:100 900;font-style:normal;font-display:swap}
:root{--bg:#f6f3ed;--paper:#fffefa;--ink:#302d29;--muted:#7a746c;--line:#e0d9cd;--accent:#946238;--soft:#eee2d2;--f-ui:LingoSans,"Malgun Gothic","Apple SD Gothic Neo",system-ui,sans-serif;color-scheme:light}
@media(prefers-color-scheme:dark){:root{--bg:#191814;--paper:#24221d;--ink:#eee8df;--muted:#b4aa9d;--line:#443d32;--accent:#e0ad7c;--soft:#3b3024;color-scheme:dark}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.7 var(--f-ui)}button,input,textarea{font:inherit;color:inherit}button,a{-webkit-tap-highlight-color:transparent;touch-action:manipulation}button{cursor:pointer}button:disabled{opacity:.55;cursor:default}button:focus-visible,a:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:3px}[hidden]{display:none!important}header{position:sticky;top:0;background:var(--bg);border-bottom:1px solid var(--line);z-index:10;padding-top:env(safe-area-inset-top,0px)}.top{max-width:760px;margin:auto;display:flex;align-items:center;gap:8px;padding:12px 20px}.brand{flex:1;font:600 22px/1.2 var(--f-ui);text-decoration:none;color:var(--accent)}.brand small{display:block;font:11px/1.8 var(--f-ui);letter-spacing:.1em;color:var(--muted);margin-top:3px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;border:1px solid var(--line);border-radius:10px;padding:8px 14px;background:var(--paper);color:var(--ink);text-decoration:none;font-size:14px}.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--bg);font-weight:700}main{max-width:760px;margin:auto;padding:30px 20px calc(42px + env(safe-area-inset-bottom,0px))}.eyebrow{font-size:11px;letter-spacing:.12em;color:var(--accent);font-weight:700}h1{font-size:30px;line-height:1.4;margin:10px 0}h2{font-size:21px;line-height:1.6;margin:10px 0;word-break:keep-all;overflow-wrap:anywhere}.intro,.muted{color:var(--muted)}.intro{margin:0 0 24px}.date-nav{display:flex;align-items:center;gap:10px;margin-bottom:16px}.date-nav label{font-size:12px;color:var(--muted);flex:none}.date-nav input{min-width:0;max-width:190px;flex:1;min-height:44px;border:1px solid var(--line);border-radius:10px;padding:6px 10px;background:var(--paper)}.question-card,.answer-card,.feedback{padding:24px;border:1px solid var(--line);border-radius:16px;background:var(--paper);margin:16px 0}.question-card{background:var(--soft);border:0}.badge{font-size:12px;color:var(--accent);font-weight:700}#englishQuestion{font:19px/1.7 var(--f-ui);margin:8px 0 18px}details{font-size:13px}summary{cursor:pointer;min-height:36px;display:list-item;padding:5px 0}#starter{font:19px/1.8 var(--f-ui)}label[for=dailyAnswer]{display:block;font-size:14px;font-weight:700;margin-bottom:10px}textarea{width:100%;min-height:190px;resize:vertical;border:1px solid var(--line);border-radius:12px;background:var(--bg);padding:15px;font-size:18px;line-height:1.8}textarea:focus{outline:2px solid var(--accent);outline-offset:-1px}.answer-meta{display:flex;justify-content:space-between;gap:10px;margin:10px 0;color:var(--muted);font-size:12px}.actions{display:flex;gap:8px;flex-wrap:wrap}.actions .btn{flex:1;min-width:120px}.note{font-size:12px;margin:14px 0 0}#aiStatus{font-size:13px;white-space:pre-line;overflow-wrap:anywhere}#aiStatus:empty{display:none}#natural{font:23px/1.8 var(--f-ui);white-space:pre-wrap;overflow-wrap:anywhere}#explanation{font-size:14px;line-height:1.9;white-space:pre-wrap;overflow-wrap:anywhere}#original{white-space:pre-wrap;overflow-wrap:anywhere}.history{margin-top:32px}.history-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}.history-heading h2{margin:0}.history-heading span{font-size:13px}#historyList{display:grid;gap:10px;margin-top:16px}.history-item{display:block;width:100%;text-align:left;border:1px solid var(--line);border-radius:12px;background:var(--paper);padding:14px 16px}.history-item small{display:block;color:var(--muted);font-size:12px}.history-item b{display:block;font-size:14px;margin:5px 0;font-weight:600}.history-item span{display:block;color:var(--muted);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.empty{font-size:14px;color:var(--muted);padding:20px 0}
@media(max-width:600px){.top{padding:10px 16px}.brand{font-size:20px}main{padding:22px 16px 36px}h1{font-size:26px}.question-card,.answer-card,.feedback{padding:19px 16px}h2{font-size:20px}.intro{font-size:14px}.date-nav{gap:8px}.date-nav input{font-size:16px;padding:6px}.btn{padding:8px 12px}.answer-meta{font-size:11px}}

/* Compact empty states and consistent secondary spacing. */
.history{margin-top:26px}.history-heading h2{font-size:19px;line-height:1.45}.history-heading+.note{margin-top:8px}#historyList{margin-top:12px;gap:10px}.history .empty{margin:0;padding:12px 14px;border:1px dashed var(--line);border-radius:10px;background:var(--paper);font-size:13px;line-height:1.7}.history .empty:first-child:last-child{min-height:0}.footer-note{margin-top:20px;font-size:11px;line-height:1.8}.form-status:empty{display:none}textarea{scroll-margin-top:90px}.brand{min-width:0}h1{letter-spacing:-.025em}.answer-card>.note:first-of-type{line-height:1.8}

:root{--accent:#326c79;--soft:#e3edf0}@media(prefers-color-scheme:dark){:root{--accent:#9ccdd5;--soft:#253c43}}.brand{font-size:21px}h1{font-size:29px;line-height:1.45}h2{font-size:20px}.search-label{display:block;font-size:12px;color:var(--muted);margin:18px 0 7px}.search{width:100%;min-height:46px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--paper);font-size:16px}.filters{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0}.filters button{min-height:40px;border:1px solid var(--line);border-radius:9px;padding:7px 12px;background:var(--paper);font-size:13px}.filters [aria-pressed=true]{background:var(--soft);border-color:var(--accent);color:var(--accent)}.shelf-stats{display:flex;align-items:baseline;gap:10px;color:var(--muted);font-size:13px;margin:20px 0}.shelf-stats b{font-size:24px;color:var(--accent)}.topic-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.topic-card{padding:18px;border:1px solid var(--line);border-radius:14px;background:var(--paper);min-width:0;display:flex;flex-direction:column}.topic-card h2{font-size:20px;margin:9px 0 4px;overflow-wrap:anywhere;word-break:normal}.topic-subtitle{font-size:13px;margin:0 0 10px;color:var(--muted)}.topic-card p.muted{font-size:12px;margin:0 0 14px}.progress{height:5px;background:var(--line);border-radius:5px;overflow:hidden;margin-top:auto}.progress i{display:block;height:100%;background:var(--accent)}.topic-bottom{font-size:12px;color:var(--muted);margin-top:10px}.topic-bottom .actions{margin-top:12px}.topic-bottom .btn{font-size:12px;min-width:0;padding:7px 10px}.empty{margin:0;padding:14px;border:1px dashed var(--line);border-radius:10px;font-size:13px;line-height:1.8;grid-column:1/-1}.loading{padding:28px 0;color:var(--muted)}.reader-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px;font-size:12px}.reader-bar a{color:var(--muted);text-decoration:none}.text-btn{background:none;border:0;padding:7px 0;min-height:40px;color:var(--accent);font-size:13px}.topic-title{font-size:27px;margin:0 0 20px;overflow-wrap:anywhere}.steps{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:6px;margin-bottom:24px}.steps button{min-height:68px;border:1px solid var(--line);border-radius:10px;padding:9px 3px;background:var(--paper);font-size:12px;color:var(--muted);word-break:keep-all}.steps small{display:block;font-size:10px;letter-spacing:.08em;margin-bottom:5px}.steps [aria-selected=true]{border-color:var(--accent);background:var(--soft);color:var(--accent);font-weight:700}.stage-heading{margin-bottom:18px}.stage-heading h2{margin:5px 0}#stagePanel{scroll-margin-top:90px}.lesson-paper,.own-instructions{padding:22px;border:1px solid var(--line);border-radius:14px;background:var(--paper);font-size:15px;line-height:1.95;overflow-wrap:anywhere}.lesson-paper p{margin:0 0 14px}.lesson-paper p:last-child{margin-bottom:0}.lesson-paper li{margin:10px 0}.lesson-paper em{font-style:normal;color:var(--muted);font-size:13px}.lesson-paper ul,.lesson-paper ol,.own-instructions ul{padding-left:22px}.own-instructions{font-size:13px;padding:16px 18px}.own-instructions p{margin:0 0 8px}.own-instructions ul{margin:8px 0 0}.sentences,.exercise-list,.own-list{display:grid;gap:12px}.sentence-card,.exercise-card{border:1px solid var(--line);border-radius:14px;background:var(--paper);padding:18px;min-width:0}.sentence-line,.question-heading{display:flex;gap:11px;align-items:flex-start}.number{display:inline-grid;place-items:center;width:25px;height:25px;flex:none;border:1px solid var(--line);border-radius:50%;font-size:11px;color:var(--muted);margin-top:4px}.sentence-line p{font-size:20px;line-height:1.8;margin:0 0 12px;overflow-wrap:anywhere}.sentence-card .badge,.exercise-card>.badge{display:block;font-size:11px;margin-bottom:10px}.listen{min-height:36px;padding:6px 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);font-size:12px}.hint{font-size:12px;color:var(--muted);line-height:1.9;margin:12px 0 16px;overflow-wrap:anywhere}.exercise-summary{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;font-size:12px;color:var(--muted);margin:16px 0 12px}.question-heading p{font-size:15px;line-height:1.85;margin:0;word-break:keep-all;overflow-wrap:anywhere}.gap-sentence{font-size:19px;line-height:2;overflow-wrap:anywhere;margin:16px 0}.gap{display:inline-block;min-width:55px;padding:0 8px;border-bottom:2px solid var(--accent);color:var(--accent);font-size:14px;text-align:center}.answer-field{margin-top:16px}.answer-field label,.own-label{display:block;font-size:12px;font-weight:600;margin-bottom:8px}.answer-field input{min-width:0;width:100%;min-height:46px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--bg);font-size:17px}textarea{min-height:104px;font-size:17px;line-height:1.8;padding:12px}.answer-field input:focus{outline:2px solid var(--accent);outline-offset:-1px}.answer-field .voice-field>input{width:auto}.reference{margin-top:14px;font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:7px}.reference p{font-size:16px;white-space:pre-wrap;overflow-wrap:anywhere;color:var(--ink)}.reference summary{font-size:12px}.answer-result{font-size:12px;line-height:1.8;padding:9px 11px;background:var(--soft);border-radius:8px;margin:12px 0 0;color:var(--muted)}.answer-result.good{color:var(--accent);font-weight:600}.exercise-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}.exercise-actions .btn{flex:1}.batch-nav,.step-footer{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:20px}.batch-nav>span{font-size:12px;color:var(--muted);white-space:nowrap}.step-complete{display:flex;align-items:center;gap:10px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:20px;margin-top:28px}.step-complete>span{font-size:11px}.step-footer{margin-top:18px}.speed-timer{display:flex;align-items:center;gap:10px;flex-wrap:wrap;background:var(--soft);border-radius:12px;padding:12px 14px}.speed-timer>span:first-child{font-size:23px;font-variant-numeric:tabular-nums;font-weight:650;color:var(--accent)}.speed-timer .muted{font-size:11px}.own-list{margin-top:16px}.own-feedback{border-top:1px solid var(--line);padding-top:16px;margin-top:12px}.own-feedback p{font-size:13px;line-height:1.9;white-space:pre-wrap;overflow-wrap:anywhere}.own-feedback .natural{font-size:19px;color:var(--accent)}.own-overall{padding:18px;border-radius:12px;background:var(--soft);font-size:14px;line-height:1.9;white-space:pre-wrap;overflow-wrap:anywhere}.own-overall h3{font-size:16px;margin:0 0 8px}.notice{position:fixed;bottom:16px;left:16px;right:16px;z-index:40;max-width:560px;margin:auto;padding:12px 16px;border-radius:12px;background:var(--ink);color:var(--bg);font-size:13px;line-height:1.7;pointer-events:none}.notice:empty{display:none}.voice-field{min-width:0}.badge{font-size:11px}.exercise-card .voice-add{font-size:12px;min-height:40px}.voice-field .lg-voice-toolbar{margin-bottom:0}.btn:disabled{opacity:.45}@media(max-width:600px){.topic-list{grid-template-columns:minmax(0,1fr)}.topic-card{padding:16px}.topic-card h2{font-size:20px}h1{font-size:25px}.topic-title{font-size:24px}.steps{grid-template-columns:repeat(3,minmax(0,1fr));margin-bottom:20px}.steps button{min-height:58px;font-size:12px}.steps small{margin-bottom:2px}.sentence-card,.exercise-card{padding:16px}.sentence-line p{font-size:18px}.lesson-paper{padding:18px;font-size:14px}.reader-bar{margin-bottom:12px}.batch-nav{gap:7px}.batch-nav .btn{font-size:12px;padding:8px 10px}.exercise-actions .btn{font-size:13px}.step-footer .btn{font-size:13px}.own-instructions{padding:14px 16px}}

.brand small{font-family:var(--f-ui);font-size:12px;font-weight:500;line-height:1.5;letter-spacing:0}.eyebrow{font-family:var(--f-ui);font-size:12px;font-weight:600;line-height:1.6;letter-spacing:.025em}