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var(--purple)}.oia-item.assigned{opacity:.85}.oia-badge{width:24px;height:24px;border-radius:50%;color:#fff;font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center;flex-shrink:0}.oia-buckets{display:flex;gap:8px;align-items:center;margin-bottom:12px;padding:12px;background:var(--tint-neutral);border-radius:var(--radius-sm);border:1px solid var(--border)}.bucket-prompt{font-size:13px;color:var(--text-light);font-weight:700;white-space:nowrap}.bucket-btn{flex:1;padding:10px 8px;color:#fff;border:none;border-radius:var(--radius-sm);font-size:13px;font-weight:700;cursor:pointer;transition:transform .1s}.bucket-btn:hover{filter:brightness(1.1)}.bucket-btn:active{transform:scale(.95)}.scale-container{display:flex;align-items:center;gap:12px;margin:16px 0}.scale-label{font-size:13px;color:var(--text-light);font-weight:700;min-width:70px;text-align:center}.scale-slider{flex:1;accent-color:var(--blue);height:8px;cursor:pointer}.scale-value{text-align:center;font-size:32px;font-weight:800;color:var(--blue);margin-bottom:4px}.feedback-tray{position:fixed;bottom:0;left:0;right:0;padding:24px;padding-bottom:calc(24px + env(safe-area-inset-bottom,0px));border-radius:var(--radius-lg) var(--radius-lg) 0 0;z-index:100;max-width:var(--max-width);margin:0 auto}.feedback-tray.correct{background:var(--tint-correct);border-top:3px solid var(--green)}.feedback-tray.incorrect{background:var(--tint-incorrect);border-top:3px solid var(--red)}.feedback-header{display:flex;align-items:center;gap:8px;margin-bottom:8px}.feedback-icon{display:inline-flex;align-items:center}.feedback-header h3{font-size:22px;font-weight:800}.feedback-tray.correct .feedback-header h3{color:var(--green-dark)}.feedback-tray.incorrect .feedback-header h3{color:var(--red-dark)}.feedback-explanation{font-size:15px;line-height:1.5;margin-bottom:12px;color:var(--text)}.evidence-toggle-btn{background:#1cb0f61f;border:none;color:var(--blue-dark);font-size:14px;font-weight:700;cursor:pointer;padding:8px 16px;margin-bottom:8px;font-family:var(--font);border-radius:20px;transition:all .15s;display:inline-flex;align-items:center;gap:6px}.evidence-toggle-btn:hover{background:#1cb0f633}.evidence-view{margin:8px 0;padding:12px;background:var(--tint-neutral);border-radius:var(--radius-sm)}.evidence-item{margin-bottom:8px}.evidence-item:last-child{margin-bottom:0}.evidence-ref{font-size:12px;font-weight:800;color:var(--blue-dark);display:block;margin-bottom:4px}.evidence-text{font-size:14px;line-height:1.5;color:var(--text);border-left:3px solid var(--blue);padding-left:12px;margin:0;font-style:italic}.continue-btn{width:100%;padding:14px;border:none;border-radius:var(--radius);font-size:16px;font-weight:800;cursor:pointer;margin-top:12px;transition:all .1s;font-family:var(--font);text-transform:uppercase;letter-spacing:.5px;color:#fff}.continue-btn.continue-correct{background:var(--green);box-shadow:0 4px 0 var(--green-dark)}.continue-btn.continue-incorrect{background:var(--red);box-shadow:0 4px 0 var(--red-dark)}.continue-btn:hover{filter:brightness(1.05)}.continue-btn:active{transform:translateY(4px);box-shadow:none}.feedback-rewards{display:flex;gap:8px;margin-bottom:10px;flex-wrap:wrap}.xp-badge{background:linear-gradient(135deg,gold,orange);color:#5a3800;font-size:14px;font-weight:800;padding:4px 12px;border-radius:20px;display:inline-flex;align-items:center}.streak-badge{background:linear-gradient(135deg,#ff6b35,#ff4500);color:#fff;font-size:14px;font-weight:800;padding:4px 12px;border-radius:20px;display:inline-flex;align-items:center}.finish-screen{min-height:100vh;min-height:100dvh;display:flex;align-items:center;justify-content:center;padding:24px}.finish-content{max-width:var(--max-width);width:100%;text-align:center}.finish-icon{display:inline-flex;align-items:center;justify-content:center;margin-bottom:16px}.finish-content h1{font-size:32px;font-weight:800;margin-bottom:24px}.score-card{display:flex;gap:16px;margin-bottom:32px}.score-stat{flex:1;padding:16px;background:var(--surface);border-radius:var(--radius-sm);box-shadow:var(--shadow)}.stat-value{display:block;font-size:28px;font-weight:800;margin-bottom:4px}.stat-value.hearts-display{display:flex;align-items:center;justify-content:center;gap:2px;font-size:unset}.stat-label{font-size:12px;color:var(--text-light);font-weight:700;text-transform:uppercase;letter-spacing:1px}.finish-stats{display:flex;flex-direction:column;gap:6px;margin-top:8px;margin-bottom:8px}.finish-stat-line{font-size:13px;color:var(--text-light);font-weight:600;display:inline-flex;align-items:center;gap:6px;justify-content:center}.fill-in-blank{text-align:center}.fill-sentence{font-size:18px;line-height:1.8;margin-bottom:24px;padding:16px;background:var(--tint-neutral);border-radius:var(--radius)}.fill-blank{display:inline-block;min-width:80px;padding:4px 12px;border-bottom:3px solid var(--blue);font-weight:800;color:var(--blue-dark);transition:all .2s}.fill-blank.filled{background:var(--tint-blue);border-radius:8px;border-bottom-color:transparent}.word-bank{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:24px}.word-chip{padding:10px 20px;border:2px solid var(--border);border-bottom:4px solid var(--border);border-radius:var(--radius);background:var(--surface);font-size:16px;font-weight:700;cursor:pointer;transition:all .15s}.word-chip:hover{border-color:var(--blue);transform:translateY(-1px)}.word-chip.selected{background:var(--blue);border-color:var(--blue);color:#fff}.emoji-react{text-align:center}.emoji-scenario{font-size:17px;line-height:1.6;margin-bottom:24px;padding:16px;background:var(--tint-yellow-strong);border-radius:var(--radius-sm);border:2px solid var(--tint-yellow-border)}.emoji-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:24px}.emoji-btn{display:flex;flex-direction:column;align-items:center;gap:8px;padding:20px 16px;border:2px solid var(--border);border-bottom:4px solid var(--border);border-radius:var(--radius);background:var(--surface);cursor:pointer;transition:all .2s}.emoji-btn:hover{border-color:var(--orange)}.emoji-btn.selected{border-color:var(--orange);border-bottom-color:var(--orange);background:var(--tint-orange)}.emoji-icon{font-size:48px;line-height:1}.emoji-label{font-size:14px;font-weight:700;color:var(--text)}.matching-card{display:flex;flex-direction:column}.matching-columns{display:grid;grid-template-columns:1fr 1fr;grid-auto-rows:1fr;gap:8px 16px;margin-bottom:24px}.match-item{padding:12px 14px;border:2px solid var(--border);border-bottom:4px solid var(--border);border-radius:var(--radius);background:var(--surface);font-size:14px;font-weight:600;cursor:pointer;transition:border-color .15s,background-color .15s,box-shadow .15s,opacity .15s;text-align:left;position:relative}.match-item.match-left{border-left:4px solid var(--blue)}.match-item.match-right{border-right:4px solid var(--orange);text-align:right}.match-item:hover:not(:disabled){border-color:var(--blue)}.match-item.active{background:var(--tint-blue);border-color:var(--blue)}.match-item.matched{background:var(--tint-green);border-color:var(--green);opacity:.85}.match-check{color:var(--green);font-weight:800;margin-left:6px}.cross-reference{display:flex;flex-direction:column}.cross-ref-teaching{font-size:16px;line-height:1.6;margin-bottom:20px;padding:14px;background:var(--tint-purple);border-radius:var(--radius-sm);border-left:4px solid var(--purple);font-style:italic}.cross-ref-option .cross-ref-book{display:block;font-size:13px;font-weight:800;color:var(--purple);margin-bottom:4px}.screen-wrap{width:100%;min-height:100dvh}@media(max-width:360px){.card-question{font-size:20px}.lesson-grid{grid-template-columns:1fr}.matching-columns{grid-template-columns:1fr;gap:12px}.emoji-grid{grid-template-columns:1fr}.session-header{padding:12px;gap:8px}.scale-label{min-width:50px;font-size:11px}}@media(max-width:480px){.card-question{font-size:21px;margin-bottom:16px}.score-card{flex-direction:column}.hero-title{font-size:22px}.session-body{padding:8px 12px 20px;padding-bottom:calc(20px + env(safe-area-inset-bottom,0px))}.options-list{gap:6px}.option-btn{padding:12px 14px}.statement-box{margin-bottom:12px;padding:14px}.sns-instruction{margin-bottom:8px}.card-hint{margin-bottom:14px}}@media(min-width:600px){.card-question{font-size:25px}.session-header{padding:16px 20px}.session-body{padding:12px 20px 24px;padding-bottom:calc(24px + env(safe-area-inset-bottom,0px))}.check-btn{padding:16px 44px;font-size:17px}.home-screen{padding-left:20px;padding-right:20px}}@media(min-width:768px){:root{--max-width: 760px}.card-question{font-size:26px;margin-bottom:28px}.session-header{padding:20px 24px}.session-body{padding:16px 24px 28px}.card-container{background:var(--surface);padding:24px;border-radius:var(--radius-lg);box-shadow:var(--shadow)}.option-btn{padding:16px 20px;font-size:16px}.check-btn{padding:16px 48px;font-size:17px}.matching-columns{gap:10px 20px}.match-item{padding:14px 18px;font-size:15px}.emoji-grid{gap:16px}.feedback-tray{padding:28px;padding-bottom:calc(28px + env(safe-area-inset-bottom,0px))}.continue-btn{padding:16px;font-size:17px}.word-chip{padding:12px 24px;font-size:17px}.fill-sentence{font-size:20px}.hero-title{font-size:36px}.hero-sub{font-size:18px}.home-screen{padding-left:24px;padding-right:24px}.hero-card{flex:0 0 calc(50% - 12px);min-height:280px}.hero-card__title{font-size:22px}.course-unit{max-width:640px;margin-left:auto;margin-right:auto}}@media(min-width:1024px){:root{--max-width: 960px}.card-question{font-size:28px;margin-bottom:32px}.session-header{padding:24px 32px}.session-body{padding:24px 32px 32px}.card-container{padding:32px;box-shadow:var(--shadow-lg)}.option-btn{padding:18px 24px;font-size:17px}.check-btn{padding:18px 64px;font-size:18px;border-radius:var(--radius)}.matching-columns{gap:10px 24px}.match-item{padding:16px 20px;font-size:16px}.emoji-grid{gap:20px}.emoji-icon{font-size:56px}.feedback-tray{padding:32px;padding-bottom:calc(32px + env(safe-area-inset-bottom,0px));border-radius:var(--radius-lg) var(--radius-lg) 0 0}.continue-btn{padding:18px;font-size:18px}.word-chip{padding:14px 28px;font-size:18px}.fill-sentence{font-size:22px}.score-card{gap:24px}.score-stat{padding:24px}.stat-value{font-size:36px}.hero-title{font-size:42px}.hero-sub{font-size:20px}.lesson-grid{gap:20px}.home-screen{padding-left:32px;padding-right:32px}.home-screen{display:grid;grid-template-columns:1fr 360px;grid-template-rows:auto auto auto 1fr;gap:0 28px;align-items:start}.home-hero{grid-column:1 / -1}.hero-carousel{grid-column:1;grid-row:2;padding-left:0;padding-right:0;gap:20px}.pagination-dots{grid-column:1;grid-row:3}.course-unit{grid-column:2;grid-row:2 / 5;max-width:none;margin:8px 0 0;position:sticky;top:24px}.hero-card{flex:0 0 100%;min-height:300px}.hero-card__title{font-size:26px}.unit-row{padding:16px 20px}.unit-row__label{font-size:16px}.unit-row__desc{font-size:12px}}@media(min-width:1280px){:root{--max-width: 1080px}.card-container{padding:40px}.session-header{padding:24px 40px}.session-body{padding:24px 40px 36px}.home-screen{grid-template-columns:1fr 400px;gap:0 36px}.hero-card{min-height:320px}.hero-card__title{font-size:28px}.course-unit{padding:28px 24px 24px}}@media(any-hover:hover){.hero-card{transition:transform .2s ease,box-shadow .2s ease}.hero-card:hover{transform:translateY(-3px);box-shadow:0 8px 24px #0000001f}.unit-row{transition:border-color .15s,background .15s,box-shadow .15s}.unit-row:hover{box-shadow:0 2px 8px #0000000f}}@media(max-height:500px){.session-header{padding:8px 16px}.card-question{font-size:18px;margin-bottom:12px}.check-btn{padding:10px 32px}.statement-box{padding:10px;margin-bottom:8px}.sns-instruction{margin-bottom:6px;font-size:12px}.card-category-label{margin-bottom:4px;padding:2px 8px;font-size:10px}.milestone-banner{padding:6px 12px;margin-bottom:8px;font-size:13px}.card-hint{margin-bottom:12px;margin-top:-8px}}:focus-visible{outline:3px solid var(--blue);outline-offset:2px;border-radius:inherit}.check-btn:focus-visible,.start-btn:focus-visible,.continue-btn:focus-visible{outline-offset:4px}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}.progress-fill:after{display:none}}