:root{--bg:#fff6e5;--ink:#2b2b2b;--ink-soft:#5c5750;--line:#eadfc4;--primary:#ffc93c;--primary-ink:#2b2b2b;--secondary:#ff6b4a;--secondary-soft:#ffe4db;--success:#1b9c85;--success-soft:#dcf3ec;--card:#fff;--radius:10px;--font-heading:"Poppins","Do Hyeon",sans-serif;--font-body:"Noto Sans KR",sans-serif}*{box-sizing:border-box}body,html{padding:0;margin:0;background:var(--bg);color:var(--ink);font-family:var(--font-body);font-size:18px;line-height:1.7}.app-shell{max-width:880px;margin:0 auto;padding:32px 20px 80px}h1,h2,h3{font-family:var(--font-heading);font-weight:600;letter-spacing:-.01em}h1{font-size:26px}a{color:inherit}.eyebrow{font-size:16px;color:var(--ink-soft);text-transform:uppercase;letter-spacing:.08em;margin-bottom:4px}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin-bottom:14px}.card:hover{border-color:#c8c2b2}.card-link{display:block;text-decoration:none}.status-pill{display:inline-flex;align-items:center;gap:6px;font-size:16px;font-weight:600;padding:4px 10px;border-radius:999px}.status-pill.todo{background:var(--secondary-soft);color:var(--secondary)}.status-pill.done{background:var(--success-soft);color:var(--success)}input[type=email],input[type=text],textarea{width:100%;font-family:inherit;font-size:18px;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;color:var(--ink)}textarea{min-height:160px;resize:vertical;white-space:pre-wrap}button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;font-family:var(--font-heading);font-size:18px;font-weight:600;padding:12px 20px;border-radius:var(--radius);border:none;background:var(--primary);color:var(--primary-ink);cursor:pointer}button:hover{opacity:.9}.top-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:28px}.logout-link{font-size:16px;color:var(--ink-soft);text-decoration:none}.icon-link{gap:6px}.icon-link,.page-home-link{display:inline-flex;align-items:center;min-height:48px}.page-home-link{gap:8px;text-decoration:none;font-family:var(--font-heading);font-weight:600;font-size:18px;color:#2b2b2b}.type-badge{display:inline-flex;align-items:center;gap:4px;font-size:16px;font-weight:600;color:var(--ink-soft);background:var(--card);border:1px solid var(--line);border-radius:999px;padding:2px 10px}.section-heading{display:flex;align-items:center;gap:8px;margin-bottom:4px}.section-heading .eyebrow{margin-bottom:0}.all-caught-up{text-align:center;color:var(--ink-soft)}.btn-ghost{background:transparent;border:.5px solid #b4b2a9;border-radius:8px;color:#2b2b2b;padding:8px 16px;font-size:18px;font-weight:600;min-height:48px}.unit-header{margin:24px 0 8px;font-size:18px;line-height:1.8}.unit-header-main{font-family:var(--font-heading);font-weight:600;color:var(--ink)}.unit-header-kr{font-family:Do Hyeon,sans-serif;font-size:20px}.unit-header-sub{font-family:var(--font-heading);font-weight:500;font-size:16px;color:var(--ink-soft)}.unit-header--done .unit-header-en,.unit-header--done .unit-header-kr,.unit-header--done .unit-header-main{color:#888780}.unit-header--done .unit-header-sub{color:#b4b2a9}.day-row{display:flex;align-items:center;justify-content:space-between;gap:12px;border-radius:var(--radius);padding:0 20px;margin-bottom:10px;font-family:var(--font-heading);font-weight:600;font-size:17px;min-height:56px}.day-row-label{display:flex;align-items:baseline;gap:10px;min-width:0;flex:1 1}.day-row-num{flex-shrink:0}.day-row-title{font-weight:400;font-size:15px;opacity:.75;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.day-row--completed{background:#edeae0;border:1px solid transparent;color:#888780;min-height:52px}.day-row--active{background:#fff;border:2px solid var(--secondary);color:var(--ink)}.day-row--future{background:#fff;border:1px solid #d3d1c7;color:var(--ink)}.today-pill{font-family:var(--font-heading);font-size:16px;font-weight:600;background:#ffede7;color:#993c1d;padding:4px 12px;border-radius:999px}.dashboard-top-row{position:-webkit-sticky;position:sticky;top:0;z-index:10;background:var(--bg);margin:0 -20px;padding:22px 28px 12px}.scroll-hint{display:flex;justify-content:center;gap:2px;color:#b4b2a9;padding:24px 0 12px;scroll-margin-top:76px;transition:opacity .3s ease}.scroll-hint--hidden{opacity:0;pointer-events:none}.content-block{white-space:pre-wrap;line-height:1.9;font-size:18px;background:#faf9f5;border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin:12px 0}.breadcrumb{font-size:16px;color:#b4b2a9;margin-top:16px}.day-title{font-size:22px;line-height:1.4;color:var(--ink);margin:6px 0 20px}.blank-line{display:inline-block;width:30px;border-bottom:3px solid var(--ink);margin:0 2px;vertical-align:middle}.card-header{display:flex;align-items:center;gap:8px;margin-bottom:16px;font-family:var(--font-heading);font-weight:600;font-size:18px;color:var(--ink)}.shadow-control-bar{display:flex;padding:5px;background:#1a1a1a}.shadow-control-row{display:flex;gap:6px;width:100%}.video-frame{border-radius:var(--radius);overflow:hidden;margin:12px 0;border:1px solid var(--line)}.seek-bar{position:relative;display:flex;align-items:center;height:36px;padding:0 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0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;cursor:not-allowed}.caption-toggle-btn:not(:disabled){opacity:1;cursor:pointer}.caption-toggle-btn--active{background:#fff;border:1px solid #fff;color:#2b2b2b;font-weight:600}.video-embed-wrapper{position:relative}.video-play-btn{position:absolute;left:10px;bottom:10px;display:flex;align-items:center;justify-content:center;width:36px;height:36px;min-height:0;border-radius:50%;background:rgba(0,0,0,.55);border:none;color:#fff;cursor:pointer}.caption-box{display:flex;flex-direction:column;gap:4px;padding:10px 12px;background:#1a1a1a;border-radius:0}.caption-row{margin:0;color:#fff;font-size:20px;font-weight:600;line-height:1.45;text-align:center}.caption-row--kr{font-family:var(--font-body);font-size:19px;color:#e6e6e6}.caption-word--active{color:var(--primary);font-weight:700}.record-btn-row{display:flex;gap:8px;margin-top:12px}.record-toggle-btn{flex:1 1;gap:8px;margin-top:0}.finish-recording-btn{flex-shrink:0;gap:6px;margin-top:0;background:#fff;border:1px solid var(--secondary);color:var(--secondary)}.recording-indicator{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:12px;font-family:var(--font-heading);font-weight:600;font-size:16px;color:var(--ink)}.recording-dot{width:10px;height:10px;border-radius:50%;background:var(--secondary);animation:recording-pulse 1.2s ease-in-out infinite}@keyframes recording-pulse{0%,to{opacity:1}50%{opacity:.3}}.headphone-hint{color:var(--ink-soft)}.headphone-hint,.mic-error-text{text-align:center;font-size:16px;margin-top:8px}.mic-error-text{color:var(--secondary)}.playback-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:12px}.playback-audio{flex:1 1;min-width:220px}.record-again-btn{flex-shrink:0;background:#fff;border:1px solid #b4b2a9;color:var(--ink)}.submit-btn{width:100%;background:var(--secondary);color:#fff;border-radius:12px}.completion-message{font-size:18px;line-height:1.7;color:var(--ink);margin:0 0 16px}.share-btn{width:100%;margin-bottom:12px}.next-assignment-btn{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;min-height:48px;padding:12px 20px;border-radius:var(--radius);border:1px solid var(--line);background:transparent;color:var(--ink);font-family:var(--font-heading);font-weight:600;font-size:18px;text-decoration:none}.video-embed{aspect-ratio:16/9;width:100%}.video-embed iframe{display:block;width:100%;height:100%;border:none}.error-text{color:var(--secondary);font-size:16px;margin-top:8px}.check-limit-text{color:var(--ink-soft);font-size:16px;margin-top:8px}.copy-confirmation{color:var(--success);font-size:16px;margin-top:8px}.translation-check{margin-top:12px}.check-answer-btn{width:100%;background:#fff;border:1px solid var(--secondary);color:var(--secondary)}.answer-box{position:relative;width:100%;min-height:160px;font-family:inherit;font-size:18px;line-height:1.7;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;color:var(--ink)}.answer-box--annotated{padding-top:40px}.edit-answer-btn{position:absolute;top:8px;right:8px;display:inline-flex;align-items:center;gap:4px;min-height:0;padding:6px 10px;font-size:14px;font-weight:500;background:var(--card);border:1px solid var(--line);color:var(--ink-soft)}.answer-box-text{white-space:pre-wrap}.wavy-wrong{-webkit-text-decoration-line:underline;text-decoration-line:underline;-webkit-text-decoration-style:wavy;text-decoration-style:wavy;-webkit-text-decoration-color:var(--secondary);text-decoration-color:var(--secondary);text-decoration-thickness:2px;text-underline-offset:3px}.inline-correction{color:var(--success);font-style:italic}.inline-check{color:var(--success);vertical-align:-2px;margin-left:2px}.ask-why-block{margin-top:14px}.ask-why-hint{font-size:14px;color:var(--ink-soft);margin:0 0 8px}.ask-why-preview-toggle{display:inline-flex;min-height:0;padding:0;margin-bottom:8px;background:transparent;border:none;color:var(--ink-soft);font-family:inherit;font-weight:500;font-size:13px;text-decoration:underline;cursor:pointer}.ask-why-prompt-text{max-height:220px;overflow-y:auto;margin:0 0 10px;padding:10px 12px;border:1px solid var(--line);border-radius:var(--radius);background:#faf9f5;color:var(--ink-soft);font-family:var(--font-body);font-size:13px;line-height:1.6;white-space:pre-wrap}.chat-pill-row{display:flex;gap:10px}.chat-pill-btn{flex:1 1;display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;border-radius:999px;font-size:15px;font-weight:600;background:#fff;border:1px solid var(--line);color:var(--ink)}.chat-pill-dot{width:9px;height:9px;border-radius:50%;flex-shrink:0}.chat-pill-dot--chatgpt{background:#10a37f}.chat-pill-dot--gemini{background:#4285f4}.chat-toast{margin:8px 0 0;font-size:14px;color:var(--success)}table{width:100%;border-collapse:collapse;font-size:16px}td,th{text-align:left;padding:8px 10px;border-bottom:1px solid var(--line)}th{font-weight:600}.section-caveat,th{color:var(--ink-soft)}.section-caveat{font-size:16px;line-height:1.7;margin:0 0 12px}@media (min-width:1024px){.app-shell:has(.assignment-page){max-width:1200px;padding-top:16px}.assignment-page .breadcrumb{margin-top:8px}.assignment-page .day-title{margin:4px 0 12px}.assignment-page .card{padding:16px 24px}.assignment-page .card-header{margin-bottom:8px}.assignment-page #section-shadowing .video-frame{max-width:min(100%,max(320px,calc((100vh - 480px) * 16 / 9)));margin:8px auto}.assignment-page .record-btn-row{margin-top:8px}.assignment-page .headphone-hint{margin-top:4px}}