:root{--bg: #fff7e6;--card: #ffffff;--ink: #3b2f2f;--muted: #8a7a7a;--accent: #ff6b9d;--accent-soft: #ff6b9d33;--primary: #7b2ff7;--primary-soft: #7b2ff71a;--ok: #2e9e5b;--no: #e2604a;--radius: 18px;--shadow: 0 6px 20px rgba(123, 47, 247, .08), 0 2px 6px rgba(0, 0, 0, .05);--shadow-lg: 0 14px 40px rgba(123, 47, 247, .16), 0 4px 12px rgba(0, 0, 0, .08)}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--ink);font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif;font-size:16px;line-height:1.45;min-height:100vh}#app{max-width:680px;margin:0 auto;padding:0 14px calc(40px + env(safe-area-inset-bottom))}button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}h1,h2,h3{margin:0;line-height:1.2}p{margin:0}.muted{color:var(--muted);font-size:.85em}.topbar{display:flex;align-items:center;gap:10px;padding:12px 2px;position:sticky;top:0;z-index:20;background:linear-gradient(180deg,var(--bg) 82%,transparent)}.topbar-title{font-size:1.15rem;font-weight:800;flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.btn-icon{width:44px;height:44px;border-radius:14px;background:var(--card);box-shadow:var(--shadow);font-size:1.2rem;display:inline-flex;align-items:center;justify-content:center;flex:none;transition:transform .1s}.btn-icon:active{transform:scale(.92)}.coin-chip{display:inline-flex;align-items:center;gap:6px;background:linear-gradient(135deg,#ffe08a,#ffc93c);border:2px solid #ffb703;border-radius:999px;padding:6px 14px;font-weight:800;font-size:1rem;box-shadow:var(--shadow)}.coin-ico{font-size:1.1rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;border-radius:14px;font-size:1rem;font-weight:700;background:var(--card);color:var(--ink);box-shadow:var(--shadow);transition:transform .1s,filter .1s;text-decoration:none}.btn:active{transform:scale(.96)}.btn-primary{background:linear-gradient(135deg,#9a4dff,var(--primary));color:#fff}.btn-soft{background:var(--accent-soft);color:var(--ink)}.btn-ghost{background:transparent;box-shadow:none;color:var(--muted)}.btn-danger{background:#fdecea;color:var(--no);border:2px solid #f5c6c0}.btn-lg{padding:15px 26px;font-size:1.1rem;border-radius:16px}.btn-sm{padding:8px 14px;font-size:.9rem}.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px;margin:14px 0}.section-head{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:12px}.section-head h2{font-size:1.05rem;font-weight:800}.sub-head{font-weight:800;margin:14px 0 8px;font-size:.95rem}.hero{display:flex;align-items:center;gap:14px;padding:20px 6px 6px}.hero-emoji{font-size:3.2rem;animation:floaty 3s ease-in-out infinite}.hero-text h1{font-size:1.3rem;font-weight:900}.hero-sub{color:var(--muted);font-size:.9rem}@keyframes floaty{0%,to{transform:translateY(0) rotate(-4deg)}50%{transform:translateY(-8px) rotate(4deg)}}.kid-card{background:linear-gradient(135deg,#7b2ff7,#a855f7);color:#fff;border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:16px;margin:14px 0}.kid-row{display:flex;align-items:center;gap:12px}.kid-avatar{font-size:2.6rem;background:#fff3;border-radius:50%;width:58px;height:58px;display:flex;align-items:center;justify-content:center;flex:none}.kid-info{flex:1}.kid-name{font-weight:900;font-size:1.1rem}.kid-badges{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}.badge{background:#ffffff38;border-radius:999px;padding:3px 10px;font-size:.78rem;font-weight:700}.goal-row{margin-top:14px;display:flex;flex-direction:column;gap:6px}.goal-label{font-size:.85rem;font-weight:700}.progress{height:10px;background:#eee7d8;border-radius:999px;overflow:hidden}.progress-fill{height:100%;border-radius:999px;background:var(--accent);transition:width .4s ease}.bar-wrap{margin:10px 0}.mission-card{background:linear-gradient(135deg,#fff3c4,#ffe9a8)}.mission-count{background:var(--primary);color:#fff;border-radius:999px;padding:2px 12px;font-weight:800;font-size:.85rem}.mission-task{display:flex;align-items:center;gap:10px;padding:7px 4px;font-weight:600;font-size:.95rem}.mission-task.done .mission-label{text-decoration:line-through;color:var(--muted)}.mission-check{font-size:1.1rem}.mission-progress{margin-left:auto;color:var(--muted);font-size:.85rem}.mission-unit{margin-top:10px;padding-top:10px;border-top:2px dashed rgba(123,47,247,.25);display:flex;flex-direction:column;gap:10px;font-weight:700}.mission-actions{display:flex;gap:10px;flex-wrap:wrap}.unit-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.unit-card{text-align:left;background:var(--card);border:2px solid #f0e8d8;border-radius:16px;padding:12px;display:flex;flex-direction:column;gap:8px;transition:transform .1s,border-color .15s;position:relative}.unit-card:active{transform:scale(.97)}.unit-card:hover{border-color:var(--accent)}.unit-icon{font-size:2rem}.unit-title{font-weight:800;font-size:.95rem}.unit-en{font-size:.75rem;color:var(--muted)}.unit-stars{margin:2px 0}.unit-meta{display:flex;align-items:center;justify-content:space-between;font-size:.75rem;color:var(--muted)}.badge-new{background:var(--no);color:#fff;border-radius:999px;padding:1px 8px;font-size:.68rem;font-weight:800;animation:pulse 1.6s infinite}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.08)}}.unit-hero{display:flex;gap:14px;background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px;margin:12px 0;border-left:6px solid var(--accent)}.unit-hero-icon{font-size:2.8rem;flex:none}.unit-hero-body{flex:1}.unit-hero-body h2{font-size:1.15rem}.unit-hero-meta{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0}.chip{background:var(--accent-soft);border-radius:999px;padding:3px 10px;font-size:.78rem;font-weight:700}.unit-hero-stars{margin-bottom:8px}.activity-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.activity-card{text-align:left;background:#fdfaf2;border:2px solid #f0e8d8;border-radius:16px;padding:14px;display:flex;gap:10px;align-items:flex-start;transition:transform .1s}.activity-card:active{transform:scale(.97)}.activity-icon{font-size:1.8rem}.activity-title{font-weight:800;font-size:.95rem}.activity-desc{font-size:.78rem;color:var(--muted);margin:2px 0 6px}.activity-meta{display:flex;align-items:center;gap:8px}.sentence-group{margin-bottom:12px}.sentence-group:last-child{margin-bottom:0}.sentence-group-label{font-size:.8rem;font-weight:800;color:var(--primary);background:var(--primary-soft);border-radius:999px;padding:4px 12px;display:inline-block;margin:6px 0 2px}.sentence-row{display:flex;align-items:center;gap:10px;padding:10px 4px;border-bottom:1px dashed #eee3d0}.sentence-row:last-child{border-bottom:none}.sentence-num{background:var(--primary-soft);color:var(--primary);border-radius:50%;width:28px;height:28px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.85rem;flex:none}.sentence-body{flex:1}.sentence-en{font-weight:800}.sentence-vi{color:var(--muted);font-size:.85rem}.sentence-actions{display:flex;gap:6px}.btn-speak{display:inline-flex;align-items:center;gap:6px;background:var(--primary-soft);color:var(--primary);border-radius:12px;padding:9px 14px;font-weight:800;font-size:.9rem}.btn-speak:active{transform:scale(.94)}.btn-speak-big{width:96px;height:96px;border-radius:50%;font-size:2.4rem;background:var(--primary);color:#fff;box-shadow:var(--shadow-lg);justify-content:center}.stars{display:inline-flex;gap:2px;color:#e0d6c0;letter-spacing:1px}.star{font-size:1rem}.star.filled{color:#ffb703;text-shadow:0 1px 2px rgba(0,0,0,.15)}.star-sm .star{font-size:.8rem}.star-md .star{font-size:1.15rem}.star-xl .star{font-size:2.6rem}.art-emoji{font-size:3.4rem;line-height:1;display:inline-block}.art-svg{display:inline-block;width:84px;height:84px}.art-svg svg{width:100%;height:100%;display:block}.word-art{display:inline-block;filter:drop-shadow(0 4px 8px rgba(0,0,0,.1))}.word-art .art-emoji{font-size:3.4rem}.word-art-big .art-emoji{font-size:7rem}.word-art-big .art-svg{width:190px;height:190px}.fc-wrap{display:flex;flex-direction:column;gap:12px;margin-top:8px}.fc-info{display:flex;justify-content:space-between;font-weight:700;font-size:.9rem}.fc-card{background:var(--card);border-radius:24px;box-shadow:var(--shadow-lg);border:3px solid var(--accent-soft);min-height:300px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:24px 16px;text-align:center;position:relative}.fc-word{font-size:2.2rem;font-weight:900;letter-spacing:.5px}.fc-word.hidden{display:none}.fc-extra{display:flex;gap:12px;align-items:baseline;font-size:.95rem}.fc-ipa{color:var(--muted);font-style:italic}.fc-vi{font-weight:700;color:var(--primary)}.fc-extra.hidden{display:none}.fc-flip-side{display:none;flex-direction:column;align-items:center;gap:6px}.fc-flip-side.show{display:flex}.fc-vi-big{font-size:2rem;font-weight:900;color:var(--primary)}.fc-vi-hint{color:var(--muted)}.fc-flip-row{display:flex;align-items:center;gap:8px}.fc-actions{display:flex;justify-content:space-between;align-items:center;gap:8px}.big-speak{background:var(--primary);color:#fff;width:60px;height:60px;border-radius:50%;font-size:1.6rem;box-shadow:var(--shadow-lg)}.fc-mark-row{display:flex;gap:10px}.fc-mark-row .btn{flex:1}.listen-wrap,.quiz-wrap{margin-top:8px}.listen-head{display:flex;align-items:center;justify-content:space-between;gap:10px}.round-counter{background:var(--card);border-radius:999px;padding:8px 18px;font-weight:900;box-shadow:var(--shadow)}.round-num{font-size:1.05rem}.banner-slot{min-height:44px;display:flex;align-items:center;justify-content:center;margin:6px 0}.flash-banner{display:inline-flex;align-items:center;gap:10px;padding:10px 18px;border-radius:999px;font-weight:800;animation:pop-in .3s ease}.flash-banner.ok{background:#e3f6ea;color:var(--ok)}.flash-banner.no{background:#fdecea;color:var(--no)}.flash-emoji{font-size:1.3rem}@keyframes pop-in{0%{transform:scale(.6);opacity:0}to{transform:scale(1);opacity:1}}.pic-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:8px}.pic-opt{background:var(--card);border:3px solid #f0e8d8;border-radius:20px;padding:16px 8px;display:flex;flex-direction:column;align-items:center;gap:8px;transition:transform .1s,border-color .15s}.pic-opt:active{transform:scale(.95)}.pic-opt .art-emoji{font-size:4.4rem}.pic-opt .art-svg{width:110px;height:110px}.pic-opt-label{font-weight:800;font-size:.85rem;color:var(--muted);visibility:hidden;height:0}.pic-opt.wrong{border-color:var(--no);background:#fdecea;animation:shake .4s}.pic-opt.correct{border-color:var(--ok);background:#e3f6ea}.text-opt{background:var(--card);border:3px solid #f0e8d8;border-radius:20px;padding:20px 10px;font-size:1.5rem;font-weight:800;transition:transform .1s,border-color .15s}.text-opt:active{transform:scale(.95)}.text-opt.wrong{border-color:var(--no);background:#fdecea}.text-opt.correct{border-color:var(--ok);background:#e3f6ea}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-6px)}75%{transform:translate(6px)}}.quiz-prompt{display:flex;justify-content:center;min-height:120px;align-items:center;margin:6px 0}.quiz-prompt-center{display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center}.quiz-art .art-emoji{font-size:5.2rem}.quiz-art .art-svg{width:140px;height:140px}.quiz-vi{font-size:1.9rem;font-weight:900;color:var(--primary);background:var(--primary-soft);padding:10px 22px;border-radius:16px}.quiz-hint{color:var(--muted);font-size:.9rem;font-weight:600}.speak-wrap{display:flex;flex-direction:column;gap:10px;margin-top:8px}.speak-stage{display:flex;flex-direction:column;align-items:center;gap:6px;background:var(--card);border-radius:24px;box-shadow:var(--shadow);padding:22px 14px;text-align:center}.speak-art{margin-bottom:4px}.speak-word{font-size:2.4rem;font-weight:900}.speak-extra{display:flex;gap:12px;font-size:.95rem}.speak-sentence-card{display:flex;flex-direction:column;gap:8px;padding:10px 4px}.speak-sentence-en{font-size:1.7rem;font-weight:900}.speak-sentence-vi{color:var(--muted);font-size:1rem}.speak-feedback{min-height:90px;display:flex;align-items:center;justify-content:center}.speak-status{min-height:26px;text-align:center}.speak-err{color:var(--no);font-weight:700;font-size:.9rem}.speak-hint{color:var(--primary);font-weight:700;font-size:.9rem}.speak-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}.mic-btn{background:linear-gradient(135deg,#ff6b9d,#e91e63)}.listening-box{display:flex;flex-direction:column;align-items:center;gap:8px;font-weight:800;font-size:1.05rem}.mic-pulse{font-size:2.4rem;animation:micpulse 1s infinite}@keyframes micpulse{0%,to{transform:scale(1)}50%{transform:scale(1.25)}}.speak-result{display:flex;flex-direction:column;align-items:center;gap:6px;padding:16px 26px;border-radius:20px;text-align:center;animation:pop-in .3s ease}.speak-result.ok{background:#e3f6ea;border:3px solid #b8e6c8}.speak-result.no{background:#fff3c4;border:3px solid #ffe08a}.speak-result-emoji{font-size:2.2rem}.speak-result-title{font-weight:900;font-size:1.2rem}.speak-result-heard{color:var(--muted);font-style:italic;font-size:.95rem}.speak-result-hint{font-size:.85rem;font-weight:600;color:#a8861f}.speak-note{background:#eef2ff;border-radius:12px;padding:12px;font-size:.85rem;color:#4a5a8a;line-height:1.5}.match-wrap{margin-top:8px;display:flex;flex-direction:column;gap:10px}.match-status{display:flex;justify-content:space-between;font-weight:700;font-size:.9rem}.match-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.match-card{aspect-ratio:1;border-radius:14px;position:relative;overflow:hidden;background:var(--card);border:3px solid #f0e8d8;display:flex;align-items:center;justify-content:center;transition:transform .15s}.match-card:active{transform:scale(.95)}.match-back{font-size:1.6rem;position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#9a4dff,#7b2ff7);color:#fff;transition:opacity .15s}.match-face{opacity:0;transition:opacity .15s;display:flex;align-items:center;justify-content:center}.match-card.up .match-back{opacity:0}.match-card.up .match-face{opacity:1}.match-card.done{border-color:#b8e6c8;background:#e3f6ea;pointer-events:none}.match-card.done .match-back{opacity:0}.match-card.done .match-face{opacity:1}.match-card .art-emoji{font-size:3.4rem}.match-card .art-svg{width:84px;height:84px}.match-word{font-weight:900;font-size:1.35rem;text-align:center;word-break:break-word}.bubbles-wrap{margin-top:8px;display:flex;flex-direction:column;gap:10px}.bubbles-head{display:flex;align-items:center;justify-content:space-between;gap:8px}.bubbles-lives{font-size:1.2rem;letter-spacing:2px}.bubbles-score{font-weight:900;background:var(--card);border-radius:999px;padding:8px 16px;box-shadow:var(--shadow);font-size:.9rem}.bubbles-prompt{display:flex;justify-content:center}.bubbles-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.balloon{aspect-ratio:1;background:var(--card);border-radius:18px;border:3px solid #f0e8d8;display:flex;flex-direction:column;align-items:center;justify-content:center;position:relative;transition:transform .1s}.balloon:active{transform:scale(.93)}.balloon-art .art-emoji{font-size:3rem}.balloon-art .art-svg{width:72px;height:72px}.balloon-string{position:absolute;bottom:4px;width:2px;height:16px;background:#c9b8b8;border-radius:2px}.balloon.popped{border-color:transparent;background:transparent;font-size:3.2rem;animation:pop-in .3s ease;pointer-events:none}.balloon.shake{border-color:var(--no);animation:shake .4s}.end-screen{display:flex;align-items:center;justify-content:center;min-height:60vh;padding:20px 0}.end-card{background:var(--card);border-radius:24px;box-shadow:var(--shadow-lg);padding:28px 22px;text-align:center;width:100%;max-width:420px;animation:pop-in .35s ease}.end-title{font-size:1.5rem;font-weight:900}.end-stars{margin:14px 0}.end-msg{color:var(--muted);font-weight:600}.end-score{font-size:1.1rem;font-weight:700;margin:8px 0}.end-big{font-size:1.6rem;font-weight:900;color:var(--primary)}.end-coins{font-weight:800;color:#b8860b;background:#fff3c4;display:inline-block;padding:6px 16px;border-radius:999px;margin:6px 0 12px}.end-actions{display:flex;gap:10px;justify-content:center;margin-top:14px}.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.stat-card{background:#fdfaf2;border-radius:14px;border:2px solid #f0e8d8;padding:12px;display:flex;align-items:center;gap:10px}.stat-ico{font-size:1.7rem}.stat-value{font-weight:900;font-size:1.15rem}.stat-label{color:var(--muted);font-size:.75rem}.week-chart{display:flex;align-items:flex-end;gap:8px;height:150px;padding-top:10px}.week-col{flex:1;display:flex;flex-direction:column;align-items:center;gap:6px;height:100%}.week-bar-wrap{flex:1;width:100%;display:flex;align-items:flex-end;justify-content:center}.week-bar{width:70%;max-width:44px;background:linear-gradient(180deg,#ffd76a,#ffb703);border-radius:8px 8px 4px 4px;min-height:4px;position:relative;transition:height .4s ease}.week-bar-label{position:absolute;top:-20px;left:50%;transform:translate(-50%);font-size:.7rem;font-weight:800;color:#a8861f;white-space:nowrap}.week-day{font-size:.7rem;color:var(--muted);font-weight:600}.unit-table{display:flex;flex-direction:column}.unit-row{display:flex;align-items:center;gap:10px;padding:9px 2px;border-bottom:1px dashed #eee3d0}.unit-row:last-child{border-bottom:none}.unit-row-icon{font-size:1.4rem}.unit-row-body{flex:1}.unit-row-title{font-weight:700;font-size:.9rem}.unit-row-stars{display:flex;gap:3px;margin-top:3px}.mini-star{color:#e0d6c0;font-size:.85rem}.mini-star.on{color:#ffb703}.unit-row-count{font-weight:800;font-size:.85rem;color:var(--muted)}.form-row{margin:12px 0}.form-label{display:block;font-weight:700;font-size:.9rem;margin-bottom:6px}.input{width:100%;border:2px solid #e5dcc8;border-radius:12px;padding:10px 12px;font-size:1rem;font-family:inherit;background:#fffdf8}.input:focus{outline:none;border-color:var(--primary)}.input-num{width:120px}.range-row{display:flex;align-items:center;gap:10px}.range{flex:1;accent-color:var(--primary)}.range-val{font-weight:800;min-width:44px;text-align:center}.toggle-row{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 2px;font-weight:600;cursor:pointer}.toggle-input{position:absolute;opacity:0;pointer-events:none}.toggle-ui{width:52px;height:30px;border-radius:999px;background:#e5dcc8;position:relative;transition:background .2s;flex:none}.toggle-ui:after{content:"";position:absolute;top:3px;left:3px;width:24px;height:24px;border-radius:50%;background:#fff;box-shadow:0 2px 4px #0003;transition:left .2s}.toggle-input:checked+.toggle-ui{background:var(--primary)}.toggle-input:checked+.toggle-ui:after{left:25px}.form-actions{margin-top:14px}.backup-actions{display:flex;gap:10px;flex-wrap:wrap;margin:10px 0}.hidden-input{display:none}.migrate-alert{display:flex;align-items:flex-start;gap:12px;background:linear-gradient(135deg,#fff3cd,#ffeaa7);border:2px solid #f0c040;border-radius:var(--radius);padding:16px;margin-bottom:14px}.migrate-alert-icon{font-size:1.5rem;flex-shrink:0;margin-top:2px}.migrate-alert-title{font-weight:700;color:#7c5e00;margin:0 0 4px}.migrate-alert-desc{color:#8a6d00;margin:0;font-size:.9rem}.confetti-canvas{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:999;display:none}@media(max-width:480px){.unit-grid,.activity-grid{grid-template-columns:repeat(2,1fr)}.pic-grid{grid-template-columns:repeat(2,1fr);gap:8px}.pic-opt .art-emoji{font-size:3.4rem}.pic-opt .art-svg{width:84px;height:84px}.match-grid{grid-template-columns:repeat(4,1fr);gap:8px}.fc-card{min-height:260px}.word-art-big .art-emoji{font-size:5.4rem}.word-art-big .art-svg{width:150px;height:150px}}@media(max-width:360px){.bubbles-grid{gap:6px}.balloon-art .art-emoji{font-size:2.4rem}.balloon-art .art-svg{width:58px;height:58px}.stat-grid{grid-template-columns:1fr}}.spell-wrap{padding:16px;max-width:640px;margin:0 auto;display:flex;flex-direction:column;gap:14px;align-items:stretch}.spell-art{display:flex;justify-content:center;padding:6px 0}.spell-art .word-art{font-size:5rem;line-height:1.1}.spell-art .art-svg{width:140px;height:140px}.spell-slots-wrap{display:flex;justify-content:center}.spell-slots{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;padding:10px 6px}.spell-slot{width:44px;height:54px;border:3px dashed #d8c9a8;border-radius:12px;background:var(--card);display:inline-flex;align-items:center;justify-content:center;font-size:1.9rem;font-weight:800;color:var(--ink);text-transform:lowercase}.spell-slot.filled{border-style:solid;border-color:var(--ok);background:#e3f6ea;animation:pop-in .25s}.spell-slot.blank{background:#fff7e0}.spell-sep{width:16px;display:inline-flex;align-items:center;justify-content:center;font-size:1.4rem;color:var(--muted)}.spell-tiles{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;padding:10px 4px}.spell-tile{width:52px;height:58px;border:none;border-radius:14px;background:linear-gradient(180deg,#fff,#ffe9c2);box-shadow:0 3px #e0b768,0 4px 8px #0000001f;font-size:1.8rem;font-weight:800;color:#7a4a12;text-transform:lowercase;transition:transform .1s}.spell-tile:active{transform:translateY(2px) scale(.95)}.spell-tile.used{opacity:.25;transform:scale(.9);pointer-events:none;filter:grayscale(1)}.spell-tile-word{width:auto;min-width:64px;padding:0 16px;font-size:1.3rem}.spell-tile.shake{animation:shake .4s}.sentence-card{background:var(--card);border:3px solid #f0e8d8;border-radius:22px;padding:18px 16px;display:flex;flex-direction:column;gap:8px;text-align:center}.sentence-card .sentence-en{font-size:1.45rem;font-weight:800;line-height:1.6;letter-spacing:.5px}.sentence-card .sentence-vi{color:var(--muted);font-size:.9rem}.sentence-word{display:inline-block;padding:2px 6px;border-radius:8px}.sentence-word.done{background:#e3f6ea;color:#1e7a3c}.sentence-blank{color:var(--muted)}.cloze-opts{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.cloze-opts .text-opt{min-height:64px;text-transform:lowercase}.write-row{display:flex;justify-content:center}.write-input{width:100%;max-width:320px;padding:16px 18px;font-size:2rem;font-weight:800;text-align:center;border:3px solid #e8dcc0;border-radius:18px;background:var(--card);color:var(--ink);text-transform:lowercase;outline:none}.write-input:focus{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}.write-input.shake{animation:shake 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#3b2f2f;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:1.1rem;font-weight:900}.ws-page-3,.ws-page-4{margin-top:18px}.ws-tf-list{display:flex;flex-direction:column;gap:10px}.ws-tf-row{display:flex;align-items:center;gap:10px;border:1px dashed #d9c9a8;border-radius:12px;padding:8px 10px}.ws-tf-art{font-size:2rem;flex:none}.ws-tf-body{flex:1}.ws-tf-en{font-weight:800}.ws-tf-vi{font-size:.78rem;color:var(--muted)}.ws-tf-choices{display:flex;gap:10px;flex:none}.ws-tf-choice{width:32px;height:32px;border:2px solid #3b2f2f;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-weight:900;font-size:1rem}.ws-qa-list{display:flex;flex-direction:column;gap:12px}.ws-qa-row{border:1px dashed #d9c9a8;border-radius:12px;padding:10px 12px}.ws-qa-q{font-weight:900}.ws-qa-vi{font-size:.78rem;color:var(--muted);margin:2px 0 6px}.ws-qa-a{font-weight:800;letter-spacing:.02em}.ws-qa-line{border-bottom:1.5px solid #3b2f2f;height:26px;margin-top:6px}.ws-pdf-hint{width:100%;text-align:center;color:var(--muted);font-size:.8rem;margin:6px 0 0}.ws-qa-q-en{font-weight:800;font-size:.95rem}.ws-qa-a-en{font-weight:800;font-size:.95rem;text-transform:capitalize}.ws-qa-circle{text-align:left}.ws-unscramble{margin-top:4px}.ws-unscramble-row{margin-bottom:12px}.ws-unscramble-row:last-child{margin-bottom:0}.ws-unscramble-en{display:inline-block;width:42%;vertical-align:bottom;font-weight:900;letter-spacing:.35em;font-size:1.1rem;text-transform:lowercase;color:#3b2f2f}.ws-unscramble-row .ws-lines{display:inline-block;width:56%;margin-top:0}body.pdf-export .ws-trace-word{color:#cfc8ba;-webkit-text-stroke:0}.shop-hero{text-align:center}.shop-coin-row{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap}.shop-coin-big{font-size:1.5rem;font-weight:900;color:#b8860b}.shop-msg{margin:8px 0 0;font-weight:800;color:var(--ok)}.shop-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:10px}.shop-item{background:var(--card);border:2px solid #f0e8d8;border-radius:16px;padding:12px 6px;display:flex;flex-direction:column;align-items:center;gap:4px;color:var(--ink);transition:transform .1s,border-color .15s}.shop-item:active{transform:scale(.95)}.shop-item.owned{border-color:#ffd166}.shop-item.equipped{border-color:var(--ok);background:#f2fbf4}.shop-emoji{font-size:2.6rem;line-height:1.1}.shop-name{font-size:.85rem;font-weight:800;text-align:center}.shop-price{font-size:.78rem;font-weight:800;color:#b8860b}.shop-price.poor{color:var(--no)}.shop-titles{display:flex;flex-direction:column;gap:8px}.shop-item.shop-title{flex-direction:row;justify-content:space-between;padding:12px 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#f0e8d8;border-radius:12px;padding:8px 10px}.words-art{font-size:1.7rem;flex:none}.words-body{flex:1;min-width:0}.words-en{font-weight:900;text-transform:capitalize}.words-vi{font-size:.78rem;color:var(--muted)}.words-chip{font-size:.72rem;font-weight:800;padding:3px 8px;border-radius:999px;white-space:nowrap}.words-chip.ok{background:#eafaf0;color:var(--ok)}.words-chip.learning{background:#fff6e0;color:#b8860b}.words-chip.fresh{background:#fdeeee;color:var(--no)}.words-empty{text-align:center;padding:20px 0}.weak-list{display:flex;flex-direction:column;gap:8px}.weak-row{display:flex;align-items:center;gap:10px;border:1px solid #fde2dd;background:#fff8f6;border-radius:12px;padding:8px 10px;color:var(--ink);text-align:left;width:100%}.weak-art{font-size:1.6rem;flex:none}.weak-en{font-weight:900;text-transform:capitalize;flex:1}.weak-vi{font-size:.78rem;color:var(--muted);flex:1}.weak-count{font-size:.78rem;font-weight:800;color:var(--no);white-space:nowrap}.spell-listen-cover{display:flex;flex-direction:column;align-items:center;gap:6px;min-height:130px;justify-content:center}.spell-listen-emoji{font-size:3.4rem}.spell-listen-label{font-weight:900;color:var(--muted);font-size:.9rem}