.kb-reader{max-width:52rem;min-height:100vh;margin:0 auto;padding:6rem 1.5rem 4rem}.kb-reader--loading{justify-content:center;align-items:center;display:flex}.kb-reader__skeleton{background:linear-gradient(90deg,#ffffff0a 25%,#ffffff14 50%,#ffffff0a 75%) 0 0/200% 100%;border-radius:.5rem;width:100%;max-width:32rem;height:1.5rem;animation:1.5s infinite shimmer}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.kb-reader--error{text-align:center;color:#ffffff80;padding-top:10rem}.kb-reader--error a{color:var(--accent,#06b6d4);text-decoration:underline}.kb-reader__nav{margin-bottom:2rem}.kb-reader__back{color:#fff6;align-items:center;gap:.5rem;font-size:.875rem;transition:color .2s;display:inline-flex}.kb-reader__back:hover{color:#fffc}.kb-reader__header{margin-bottom:2.5rem}.kb-reader__header h1{margin:.5rem 0 1rem;font-size:1.75rem;font-weight:700;line-height:1.3}.kb-reader__meta{color:#ffffff59;flex-wrap:wrap;gap:1rem;font-size:.8rem;display:flex}.kb-reader__meta span{align-items:center;gap:.35rem;display:inline-flex}.kb-reader__desc{color:#ffffff80;margin-top:1rem;font-size:.95rem;line-height:1.6}.kb-doc-badge{text-transform:uppercase;letter-spacing:.05em;border-radius:999px;padding:.25rem .75rem;font-size:.7rem;font-weight:600;display:inline-block}.badge-teal{color:#2dd4bf;background:#14b8a626;border:1px solid #14b8a633}.badge-amber{color:#fbbf24;background:#f59e0b26;border:1px solid #f59e0b33}.badge-cyan{color:#22d3ee;background:#06b6d426;border:1px solid #06b6d433}.kb-reader__locked{text-align:center;background:#ffffff05;border:1px solid #ffffff14;border-radius:1rem;padding:3rem 2rem}.kb-reader__locked h3{margin:1rem 0 .5rem;font-size:1.2rem}.kb-reader__locked p{color:#ffffff80;margin-bottom:1.5rem}.kb-reader__buy-btn,.kb-reader__claim-btn{cursor:pointer;border:none;border-radius:.75rem;padding:.65rem 1.5rem;font-size:.875rem;font-weight:600;transition:all .2s;display:inline-block}.kb-reader__buy-btn{color:#000;background:linear-gradient(135deg,#06b6d4,#14b8a6)}.kb-reader__claim-btn{color:#000;background:linear-gradient(135deg,#22d3ee,#2dd4bf)}.kb-reader__buy-btn:hover,.kb-reader__claim-btn:hover{opacity:.9;transform:translateY(-1px)}.kb-reader__claim-btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.kb-reader__content{color:#ffffffa6;line-height:1.75}.kb-reader__block h2{color:#ffffffe6;border-bottom:1px solid #ffffff14;margin:2rem 0 .75rem;padding-bottom:.5rem;font-size:1.3rem;font-weight:600}.kb-reader__block p{margin-bottom:1rem}.kb-reader__block li{margin-bottom:.5rem;padding-left:.5rem}.kb-reader__quiz{border-top:1px solid #ffffff14;margin-top:3rem;padding-top:2rem}.kb-reader__quiz h2{margin-bottom:1.5rem;font-size:1.25rem;font-weight:700}.kb-quiz-item{margin-bottom:2rem}.kb-quiz-question{color:#ffffffd9;margin-bottom:.75rem;font-weight:600}.kb-quiz-options{flex-direction:column;gap:.5rem;display:flex}.kb-quiz-opt{color:#fff9;cursor:pointer;background:#ffffff05;border:1px solid #ffffff1a;border-radius:.5rem;justify-content:space-between;align-items:center;padding:.65rem 1rem;font-size:.875rem;transition:all .2s;display:flex}.kb-quiz-opt:hover:not(:disabled){background:#ffffff0a;border-color:#fff3}.kb-quiz-opt.selected{background:#06b6d414;border-color:#06b6d466}.kb-quiz-opt.correct{color:#4ade80;background:#22c55e14;border-color:#22c55e66}.kb-quiz-opt.wrong{color:#f87171;background:#ef444414;border-color:#ef444466}.kb-quiz-opt:disabled{cursor:default}