main:has(.rf-shell){max-width:1180px}.rf-shell{max-width:900px;margin:0 auto;padding-bottom:4rem;display:flex;flex-direction:column;gap:14px}.rf-shell[data-loading] .rf-dots,.rf-shell[data-loading] .rf-nav{opacity:.4;pointer-events:none}.rf-breadcrumb{display:flex;flex-wrap:wrap;gap:6px;font-size:.82rem;color:var(--muted, #898781)}.rf-breadcrumb a{color:inherit;text-decoration:none}.rf-breadcrumb a:hover{color:#6fe3a8}.rf-header{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px 24px}.rf-chip{display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:#0b0b0b;background:linear-gradient(120deg,#c8ff3d,#6fe3a8);padding:4px 10px;border-radius:999px}.rf-header h1{font-size:clamp(1.4rem,3vw,2rem);margin:8px 0 4px;line-height:1.15;outline:none}.rf-meta{color:var(--muted, #898781);font-size:.9rem;margin:0}.rf-progress{min-width:200px;display:flex;flex-direction:column;gap:6px}.rf-progress-bar{height:8px;border-radius:999px;background:#7f7f7f2e;overflow:hidden}.rf-progress-bar i{display:block;height:100%;width:0;border-radius:inherit;background:linear-gradient(90deg,#c8ff3d,#6fe3a8);transition:width .4s ease}.rf-progress-label{font-size:.78rem;color:var(--muted, #898781);text-align:right}.rf-dots{display:flex;gap:6px;overflow-x:auto;padding:6px 2px;scrollbar-width:thin}.rf-dot{flex:0 0 auto;width:34px;height:34px;border-radius:50%;border:2px solid var(--dot-color, #94a3b8);background:transparent;color:var(--dot-color, #94a3b8);font-size:.78rem;font-weight:700;cursor:pointer;display:grid;place-items:center;transition:transform .15s ease,background .15s ease}.rf-dot:hover:not(:disabled){transform:translateY(-2px)}.rf-dot:focus-visible{outline:2px solid #c8ff3d;outline-offset:2px}.rf-dot.is-active{background:var(--dot-color, #94a3b8);color:#0b0b0b;transform:scale(1.12)}.rf-dot.is-done{background:color-mix(in srgb,var(--dot-color, #94a3b8) 25%,transparent)}.rf-dot.is-locked{opacity:.55;font-size:.85rem}.rf-dot.is-future:not(.is-active){opacity:.35;cursor:not-allowed;border-style:dashed}.rf-dot-end{--dot-color: #c8ff3d}.rf-stage{display:flex;flex-direction:column;gap:14px}.rf-stage.slide-right{animation:rf-in-right .3s ease}.rf-stage.slide-left{animation:rf-in-left .3s ease}@keyframes rf-in-right{0%{opacity:0;transform:translate(28px)}to{opacity:1;transform:none}}@keyframes rf-in-left{0%{opacity:0;transform:translate(-28px)}to{opacity:1;transform:none}}@media(prefers-reduced-motion:reduce){.rf-stage.slide-right,.rf-stage.slide-left{animation:none}}.rf-card{background:var(--surface, rgba(255,255,255,.04));border:1px solid var(--border, rgba(127,127,127,.2));border-radius:16px;padding:18px}.rf-card-head{display:flex;justify-content:space-between;align-items:baseline;gap:10px;margin-bottom:10px}.rf-card-head h2{font-size:1.05rem;margin:0}.rf-card-head span{font-size:.82rem;color:var(--muted, #898781)}.rf-block-label{font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted, #898781);margin:0 0 6px}.rf-video{position:relative;width:100%;aspect-ratio:16 / 9;border-radius:12px;overflow:hidden;background:#000}.rf-video iframe{width:100%;height:100%;border:0;display:block}.rf-resumo-wrap{margin-top:14px}.rf-resumo{white-space:pre-line;line-height:1.6;font-size:.95rem;text-align:justify;hyphens:auto}.rf-resumo-wrap:not(.is-open) .rf-resumo{display:-webkit-box;-webkit-line-clamp:5;-webkit-box-orient:vertical;overflow:hidden}.rf-vermais{margin-top:8px;background:none;border:0;color:#6fe3a8;cursor:pointer;padding:0;font:inherit;font-weight:600}.rf-qprogress{display:flex;gap:4px;margin-bottom:12px}.rf-qprogress i{flex:1;height:6px;border-radius:999px;background:#7f7f7f40;cursor:pointer}.rf-qprogress i.is-ok{background:#6fe3a8}.rf-qprogress i.is-bad{background:#f0717b}.rf-qprogress i.is-current{outline:2px solid #c8ff3d;outline-offset:1px}.rf-feedback{margin-top:14px;display:flex;flex-direction:column;gap:14px}.rf-feedback-section{border-top:1px solid var(--border, rgba(127,127,127,.2));padding-top:12px}.rf-feedback-text{white-space:pre-line;line-height:1.6;font-size:.95rem}.rf-comments{display:flex;flex-direction:column;gap:8px}.rf-comment{display:grid;grid-template-columns:28px 1fr;gap:10px;align-items:start;padding:8px 10px;border-radius:10px;background:#7f7f7f14}.rf-comment b{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;background:#7f7f7f33;font-size:.8rem}.rf-comment p{margin:0;font-size:.92rem;line-height:1.55}.rf-comment.is-correct{background:#6fe3a824}.rf-comment.is-correct b{background:#6fe3a8;color:#0b0b0b}.rf-comment.is-chosen{background:#f0717b24}.rf-comment.is-chosen b{background:#f0717b;color:#0b0b0b}.rf-flash-hint{font-size:.85rem;color:var(--muted, #898781);margin:0 0 12px}.rf-flash-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}.rf-flash{perspective:1000px;background:none;border:0;padding:0;min-height:150px;cursor:pointer;text-align:left;font:inherit;color:inherit}.rf-flash:focus-visible .rf-flash-inner{outline:2px solid #c8ff3d;outline-offset:2px;border-radius:12px}.rf-flash-inner{position:relative;display:block;width:100%;min-height:150px;transition:transform .5s;transform-style:preserve-3d}.rf-flash.is-flipped .rf-flash-inner{transform:rotateY(180deg)}.rf-flash-face{position:absolute;inset:0;backface-visibility:hidden;border-radius:12px;padding:14px;display:flex;flex-direction:column;gap:6px;border:1px solid var(--border, rgba(127,127,127,.25));background:var(--surface, rgba(255,255,255,.05));font-size:.9rem;line-height:1.45;overflow:auto}.rf-flash-face small{font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted, #898781)}.rf-flash-back{transform:rotateY(180deg);background:#6fe3a81f;border-color:#6fe3a866}.rf-share-text{line-height:1.6;margin:0 0 12px}.rf-share-actions,.rf-premium-actions{display:flex;gap:10px;flex-wrap:wrap}.rf-premium-card,.rf-end-card{text-align:center;padding:32px 20px}.rf-premium-lock,.rf-end-spark{font-size:2.4rem;display:block;margin-bottom:8px}.rf-premium-card h2,.rf-end-card h2{margin:0 0 8px}.rf-premium-card p,.rf-end-card p{max-width:560px;margin:0 auto 16px;line-height:1.6;color:var(--ink2, inherit)}.rf-premium-card .rf-premium-actions,.rf-end-card .rf-premium-actions{justify-content:center}.rf-lock-back{margin-top:14px;font-size:.88rem}.rf-lock-back a{color:#6fe3a8}.rf-btn-primary,.rf-btn-outline,.rf-btn-premium{display:inline-flex;align-items:center;gap:6px;padding:10px 16px;border-radius:999px;font-weight:700;font-size:.92rem;text-decoration:none;cursor:pointer;border:1px solid transparent;font-family:inherit}.rf-btn-primary{background:linear-gradient(120deg,#c8ff3d,#6fe3a8);color:#0b0b0b}.rf-btn-outline{background:transparent;border-color:#7f7f7f73;color:inherit}.rf-btn-premium{background:linear-gradient(120deg,#f59e0b,#f97316);color:#1a1206}.rf-btn-primary:hover,.rf-btn-premium:hover{opacity:.92;transform:translateY(-1px)}.rf-nav{display:flex;align-items:center;justify-content:space-between;gap:12px}.rf-nav-btn{display:inline-flex;align-items:center;gap:6px;padding:10px 16px;border-radius:999px;border:1px solid rgba(127,127,127,.4);background:transparent;color:inherit;font-weight:700;cursor:pointer;font-family:inherit;text-decoration:none}.rf-nav-btn[aria-disabled=true]{opacity:.4;cursor:not-allowed}.rf-nav-next[aria-disabled=false]{background:linear-gradient(120deg,#c8ff3d,#6fe3a8);color:#0b0b0b;border-color:transparent}.rf-nav-btn:focus-visible{outline:2px solid #c8ff3d;outline-offset:2px}.rf-nav-pos{font-size:.85rem;color:var(--muted, #898781);font-variant-numeric:tabular-nums}.rf-nav-hint{margin:-6px 0 0;text-align:center;font-size:.82rem;color:var(--muted, #898781);min-height:1.2em}.rf-nav-hint.is-nudge{animation:rf-nudge .45s ease;color:#f0717b}@keyframes rf-nudge{0%,to{transform:none}25%{transform:translate(-4px)}75%{transform:translate(4px)}}.rf-empty{color:var(--muted, #898781);font-size:.9rem;margin:0}@media(max-width:640px){.rf-card{padding:14px;border-radius:12px}.rf-progress{width:100%}}