:root{color:#17233d;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;--navy:#101b35;--gold:#d9ad58;--muted:#788399;--line:#e8ebf1;background:#f4f6fa;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,input{font:inherit}button{cursor:pointer}#root{min-height:100vh}.app{min-height:100vh;padding-bottom:92px}.top{background:var(--navy);color:#fff;justify-content:space-between;align-items:center;height:78px;padding:0 max(24px,50% - 460px);display:flex}.brand{align-items:center;gap:12px;display:flex}.brand-icon{width:42px;height:42px;color:var(--gold);background:#ffffff12;border-radius:13px;place-items:center;display:grid}.brand-name{letter-spacing:-.3px;font-weight:750}.brand-caption{color:#b8c0d0;letter-spacing:1.35px;margin-top:3px;font-size:9px}.avatar{width:38px;height:38px;color:var(--gold);border:1px solid #ffffff30;border-radius:50%;place-items:center;display:grid}main{width:min(100% - 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28px,760px);margin-top:20px}.welcome{border-radius:18px;padding:23px 20px}.section-card{gap:11px;padding:14px 12px}.section-number{flex-basis:39px;height:39px}.section-info h3{font-size:14px}}.section-card{text-align:left;width:100%;color:inherit;font:inherit;cursor:pointer;transition:border-color .15s,transform .15s,box-shadow .15s}.section-card.available:hover,.material-card:hover{border-color:#d9bd83;transform:translateY(-1px);box-shadow:0 5px 16px #1a2a4512}.section-card:focus-visible,.material-card:focus-visible,.nav-item:focus-visible,.back-button:focus-visible,.answer-option:focus-visible,.primary-button:focus-visible,.complete-button:focus-visible{outline-offset:2px;outline:3px solid #d9ad58}.section-card.locked{cursor:not-allowed}.section-card.completed .section-number{color:#3c8a68;background:#e8f5ee}.section-info{flex:1;gap:4px;min-width:0;display:grid}.section-title{color:#17233d;font-size:15px}.section-description{color:var(--muted);font-size:12px}.material-card{text-align:left;width:100%;color:inherit;font:inherit;cursor:pointer}.material-info{flex:1;gap:5px;display:grid}.material-info strong{font-size:15px}.notice{color:#70541e;background:#fff8e9;border:1px solid #ead4a8;border-radius:12px;margin:0 0 14px;padding:12px 14px;font-size:13px}.back-button,.secondary-button{border:1px solid var(--line);color:#34425d;background:#fff;border-radius:10px;align-items:center;gap:6px;margin:0 0 20px;padding:9px 12px;font-weight:650;display:inline-flex}.detail-page h1{color:var(--navy);margin:10px 0 8px;font-size:clamp(25px,5vw,34px)}.lesson-card,.quiz-card{border:1px solid var(--line);background:#fff;border-radius:16px;margin:18px 0;padding:20px}.lesson-card h2,.quiz-card h2{align-items:center;gap:9px;margin-bottom:13px;font-size:18px;display:flex}.lesson-card h2 svg{color:#9b7838}.lesson-card p{color:#48546a;margin-bottom:14px;font-size:14px;line-height:1.7}.quiz-question{margin:0 0 13px;font-weight:650;line-height:1.5}.answer-list{gap:9px;display:grid}.answer-option{border:1px solid var(--line);color:#34425d;text-align:left;background:#fff;border-radius:11px;align-items:center;gap:10px;width:100%;padding:12px;line-height:1.4;display:flex}.answer-option.selected{background:#fffaf0;border-color:#c69d4e}.radio-dot{border:1.5px solid #9ba4b2;border-radius:50%;flex:0 0 16px;width:16px;height:16px}.selected .radio-dot{border:5px solid #b88c3f}.primary-button,.complete-button{border:0;border-radius:11px;width:100%;margin-top:12px;padding:12px 16px;font-weight:700}.primary-button{color:#fff;background:var(--navy)}.complete-button{color:#493814;background:#ead29c}.quiz-feedback{color:#a34836;margin:12px 0 0;font-size:13px}.quiz-feedback.success,.completed-message{color:#307855}.completed-message{align-items:center;gap:7px;margin:14px 0 0;font-size:13px;display:flex}.profile-progress{margin:16px 0}.profile-progress .progress-track{background:#e8ebf1}.profile-progress .progress-fill{background:#c49b4d}.bottom-nav{z-index:5;pointer-events:auto}.bottom-nav button{pointer-events:auto}.app main{padding-bottom:20px}@media (width<=520px){.lesson-card,.quiz-card{padding:16px}.bottom-nav{gap:8vw}}.api-state{color:var(--muted);margin:18px 0;font-size:14px}.api-error{color:#6e5428;background:#fff9ec;border:1px solid #e8d3ad;border-radius:14px;margin:14px 0;padding:16px;line-height:1.55}.api-error p{margin:7px 0 12px}.question-block{border:0;min-width:0;margin:0 0 18px;padding:0}.question-block legend{margin-bottom:11px;font-weight:700;line-height:1.5}.primary-button:disabled{opacity:.65;cursor:wait}.written-answer{resize:vertical;border:1px solid var(--line);color:#34425d;background:#fff;border-radius:11px;width:100%;min-height:110px;padding:12px;line-height:1.55}.written-answer:focus{border-color:#c69d4e;outline:2px solid #d9ad58}.written-answer:disabled{color:#667286;background:#f7f8fa}.review-status{color:#8a6a28;margin:8px 0 0;font-size:12px}.review-status.approved{color:#307855}.review-status.needs_revision{color:#a34836}.review-comment{color:#68758a;margin:6px 0 0;font-size:12px}