:root{color:#2f2435;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;--ink:#2f2435;--muted:#7d6d75;--rose:#8d3358;--rose-dark:#682540;--cream:#fffaf4;--peach:#f8dfd1;--mint:#dbeee7;--line:#68254024;background:#fff7ef;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body{min-width:320px;min-height:100vh;margin:0}button,textarea{font:inherit}button{cursor:pointer;background:var(--rose);color:#fff;border:0;border-radius:999px;padding:.85rem 1.15rem;font-weight:750;transition:transform .16s,box-shadow .16s,background .16s;box-shadow:0 12px 24px #68254029}button:hover{background:var(--rose-dark);transform:translateY(-1px);box-shadow:0 16px 28px #68254033}button.secondary{color:var(--rose-dark);box-shadow:none;background:#f3e3dd}button.ghost{color:var(--rose-dark);box-shadow:none;border:1px solid var(--line);background:0 0}#root{min-height:100vh}.app-shell{width:min(1180px,100% - 32px);margin:0 auto;padding:32px 0 56px}.hero-card,.lesson-panel,.lesson-list,.exercise-card,.coach-card{border:1px solid var(--line);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#fffaf4e0;box-shadow:0 24px 70px #6825401f}.hero-card{background:radial-gradient(circle at 100% 0,#f8dfd1e6,#0000 34%),linear-gradient(135deg,#fffaf4,#fdeee7);border-radius:36px;grid-template-columns:minmax(0,1fr) 240px;align-items:stretch;gap:24px;padding:clamp(24px,5vw,48px);display:grid}.eyebrow{color:var(--rose);text-transform:uppercase;letter-spacing:.13em;margin:0 0 10px;font-size:.78rem;font-weight:850}h1,h2,h3,p{margin-top:0}h1{letter-spacing:-.06em;margin-bottom:18px;font-size:clamp(2.4rem,7vw,5.3rem);line-height:.96}h2{margin-bottom:8px;font-size:clamp(1.5rem,3vw,2.3rem)}h3{margin-bottom:12px;font-size:1.08rem}.hero-text{color:var(--muted);max-width:680px;font-size:1.12rem;line-height:1.65}.hero-actions,.audio-row,.exercise-actions{flex-wrap:wrap;gap:12px;display:flex}.daily-goal{border:1px solid var(--line);background:#fff;border-radius:28px;flex-direction:column;justify-content:center;gap:8px;padding:24px;display:flex}.daily-goal span,.daily-goal small,.lesson-button small,.translation,.hint,.audio-status,.grammar-note{color:var(--muted)}.daily-goal strong{color:var(--rose-dark);letter-spacing:-.06em;font-size:3.2rem}.layout-grid{grid-template-columns:320px minmax(0,1fr);align-items:start;gap:22px;margin-top:22px;display:grid}.lesson-list,.lesson-panel{border-radius:28px;padding:22px}.lesson-list{gap:10px;display:grid;position:sticky;top:18px}.section-title p{color:var(--rose);margin-bottom:4px;font-weight:800}.lesson-button{text-align:left;width:100%;color:var(--ink);box-shadow:none;border:1px solid var(--line);background:#fff;border-radius:18px;grid-template-columns:auto 1fr;gap:5px 10px;padding:14px;display:grid}.lesson-button.active{background:var(--rose);color:#fff}.lesson-button.active small,.lesson-button.active .lesson-badge{color:#ffe9df}.lesson-badge{color:var(--rose);grid-row:span 2;align-self:center;font-size:.78rem;font-weight:850}.lesson-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:18px;padding-bottom:18px;display:flex}.completion-pill{white-space:nowrap;background:var(--mint);color:#235d4e;border-radius:999px;padding:8px 12px;font-weight:800}.objective-card,.dialogue-card,.learning-columns,.feedback,.coach-answer{border:1px solid var(--line);background:#fff;border-radius:22px;margin-bottom:16px;padding:18px}.dialogue-card p{margin:8px 0 0;font-size:1.08rem}.learning-columns{grid-template-columns:1fr 1fr;gap:18px;display:grid}.vocab-list{gap:10px;margin:0;padding:0;list-style:none;display:grid}.vocab-list li{border-bottom:1px dashed var(--line);justify-content:space-between;gap:12px;padding:10px 0;display:flex}.vocab-list span,.korean-display,.feedback span[lang=ko],.coach-breakdown span[lang=ko]{font-family:Apple SD Gothic Neo,Noto Sans KR,system-ui,sans-serif;font-weight:800}.exercise-card{background:linear-gradient(#fff,#fff7ef);border-radius:28px;padding:22px}.exercise-topline{color:var(--rose);justify-content:space-between;gap:12px;margin-bottom:10px;font-size:.86rem;font-weight:850;display:flex}.korean-display{color:#fff;letter-spacing:-.02em;background:#2f2435;border-radius:22px;margin:18px 0 6px;padding:20px;font-size:clamp(1.8rem,5vw,3.2rem)}.answer-field{gap:8px;margin-top:16px;font-weight:800;display:grid}textarea{resize:vertical;border:1px solid var(--line);min-height:104px;color:var(--ink);background:#fff;border-radius:18px;outline:none;padding:14px}textarea:focus{border-color:var(--rose);box-shadow:0 0 0 4px #8d33581f}.choice-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:16px 0;display:grid}.choice-grid button{color:var(--ink);border:1px solid var(--line);box-shadow:none;background:#fff;border-radius:18px;font-size:1.5rem}.choice-grid button.selected-choice{background:var(--peach);border-color:var(--rose)}.exercise-actions{margin-top:16px}.feedback{margin-top:18px}.feedback.success{background:#f2fbf7;border-color:#235d4e59}.feedback.error{background:#fff2f6;border-color:#8d335852}.coach-card{background:radial-gradient(circle at 100% 0,#cee8dccc,#0000 34%),linear-gradient(135deg,#fffaf4,#fff);border-radius:30px;margin-top:22px;padding:22px}.coach-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:16px;padding-bottom:16px;display:flex}.coach-pill{white-space:nowrap;color:var(--rose-dark);background:#f7eadf;border-radius:999px;padding:8px 12px;font-size:.88rem;font-weight:850}.coach-examples{flex-wrap:wrap;gap:10px;margin-bottom:16px;display:flex}.coach-field textarea{min-height:86px}.coach-answer{margin-top:16px;margin-bottom:0}.coach-korean{font-size:clamp(1.45rem,4vw,2.4rem)}.coach-breakdown{margin-top:14px}@media (width<=860px){.hero-card,.layout-grid,.learning-columns{grid-template-columns:1fr}.lesson-list{position:static}.lesson-header,.coach-header{display:block}.completion-pill,.coach-pill{margin-top:12px;display:inline-block}}@media (width<=560px){.app-shell{width:min(100% - 20px,1180px);padding-top:10px}.hero-card,.lesson-panel,.lesson-list,.exercise-card,.coach-card{border-radius:22px;padding:16px}.choice-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}