:root{--bg:#f5efe6;--surface:#ede3d3;--surface-hover:#e3d7c4;--text:#2a1a0a;--text-muted:#7a6152;--accent:#7b4f2e;--accent-hover:#5c3a20;--border:#d4c4b0;--progress:#7b4f2e;--correct:#5a7a5a;--wrong:#9a6060;--sans:system-ui, "Segoe UI", Roboto, sans-serif;font:17px/150% var(--sans);color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*,:before,:after{box-sizing:border-box}body{background:var(--bg);margin:0}#root{flex-direction:column;min-height:100svh;display:flex}h1,h2,h3{color:var(--text);margin:0;font-weight:500}p{margin:0}button{cursor:pointer;font-family:var(--sans);background:0 0;border:none}.site-header{z-index:20;background:var(--bg);border-bottom:1px solid var(--border);flex-shrink:0;justify-content:space-between;align-items:center;height:56px;padding:0 32px;display:flex;position:sticky;top:0}.site-title{letter-spacing:.02em;color:var(--text);font-size:15px;font-weight:600}.site-nav{gap:24px;display:flex}.site-nav-link{color:var(--text-muted);font-size:13px;text-decoration:none;transition:color .16s}.site-nav-link:hover{color:var(--text)}.site-nav-link:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}.hub-shell{flex:1;width:100%;max-width:600px;margin:0 auto;padding:48px 16px 72px}.hub-intro{margin-bottom:36px}.hub-title{letter-spacing:-.4px;color:var(--text);margin:0 0 8px;font-size:26px;font-weight:500}.hub-subtitle{color:var(--text-muted);margin:0;font-size:15px}.hub-list{flex-direction:column;gap:12px;margin:0;padding:0;list-style:none;display:flex}.hub-card{background:var(--surface);border-radius:14px;transition:box-shadow .18s,transform .12s;overflow:hidden}.hub-card:hover{transform:translateY(-1px);box-shadow:0 4px 16px #7b4f2e14}.hub-card-progress-track{background:var(--border);width:100%;height:3px}.hub-card-progress-fill{background:var(--accent);height:100%;transition:width .4s}.hub-card--complete .hub-card-progress-fill{background:var(--correct)}.hub-card-body{justify-content:space-between;align-items:center;gap:16px;padding:20px 24px 22px;display:flex}.hub-card-main{flex:1;min-width:0}.hub-card-title{color:var(--text);letter-spacing:-.1px;margin:0 0 4px;font-size:16px;font-weight:500;line-height:135%}.hub-card-meta{color:var(--text-muted);margin:0;font-size:13px}.hub-score{color:var(--correct);font-weight:500}.hub-card-actions{flex-shrink:0;align-items:center;gap:10px;display:flex}.hub-btn{color:var(--bg);background:var(--accent);white-space:nowrap;border:none;border-radius:8px;padding:8px 16px;font-size:13px;font-weight:500;transition:background .16s,transform 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var(--accent);outline-offset:3px;border-radius:2px}.review-shell{flex:1;width:100%;max-width:600px;margin:0 auto;padding:40px 16px 72px}.review-card{background:var(--surface);border-radius:16px;overflow:hidden}.review-header{border-bottom:1px solid var(--border);padding:32px 36px 28px}.review-score-row{align-items:baseline;gap:16px;margin:12px 0 20px;display:flex}.review-score{color:var(--accent);letter-spacing:-2px;flex-shrink:0;font-size:52px;font-weight:300;line-height:1}.review-score-denom{color:var(--text-muted);letter-spacing:-.5px;font-size:24px}.review-message{color:var(--text-muted);margin:0;font-size:15px;line-height:150%}.review-header-actions{flex-wrap:wrap;gap:10px;display:flex}.review-list{margin:0;padding:0;list-style:none}.review-item{border-bottom:1px solid var(--border);padding:20px 36px}.review-item:last-child{border-bottom:none}.review-q-num{letter-spacing:.06em;text-transform:uppercase;color:var(--text-muted);margin:0 0 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20px}.hub-card-actions{width:100%}.hub-btn,.hub-btn-ghost{text-align:center;flex:1;justify-content:center}.quiz-shell{align-items:flex-start;padding:20px 12px 48px}.quiz-card-body{padding:24px 20px 28px}.quiz-question{margin-bottom:20px;font-size:17px}.review-shell{padding:20px 12px 56px}.review-header{padding:24px 20px 22px}.review-item{padding:18px 20px}.review-footer-actions{padding:20px}.review-score{font-size:44px}.review-score-row{flex-direction:column;gap:8px}}