:root{--blue:#0b63ce;--blue2:#084b9b;--ink:#102033;--muted:#607086;--line:#dce4ee;--soft:#f4f8fc;--white:#fff;--radius:18px;--shadow:0 14px 34px rgba(16,32,51,.11)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Nunito,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:#fff}a{color:inherit}.wrap{width:min(1180px,calc(100% - 32px));margin-inline:auto}.topbar{border-bottom:1px solid var(--line);background:rgba(255,255,255,.96);position:sticky;top:0;z-index:40;backdrop-filter:blur(12px)}.topbar .wrap{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{font-family:Montserrat,sans-serif;font-weight:900;letter-spacing:-.03em;text-decoration:none}.brand small{display:block;font:700 11px Nunito,sans-serif;letter-spacing:.08em;color:var(--muted);margin-top:1px}.toplink{text-decoration:none;font-weight:900;color:var(--blue);font-size:14px}.hero{position:relative;overflow:hidden;padding:72px 0 42px;background:linear-gradient(135deg,#edf5ff 0,#f8fbff 48%,#fff 100%);border-bottom:1px solid #e8eff8}.hero:before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;right:-150px;top:-205px;background:radial-gradient(circle,rgba(11,99,206,.13) 0,rgba(11,99,206,.05) 42%,transparent 70%);pointer-events:none}.hero:after{content:"π   √   ∑   △   x²";position:absolute;right:4.5%;top:48%;transform:translateY(-50%) rotate(-5deg);font:900 clamp(23px,3vw,42px) Montserrat,sans-serif;letter-spacing:.22em;color:rgba(11,99,206,.09);white-space:nowrap;pointer-events:none}.hero .wrap{position:relative;z-index:1}.eyebrow{display:inline-flex;align-items:center;gap:8px;font-weight:900;letter-spacing:.1em;font-size:12px;color:var(--blue);text-transform:uppercase}.eyebrow:before{content:"";width:26px;height:3px;border-radius:99px;background:var(--blue)}h1,h2,h3{font-family:Montserrat,sans-serif;letter-spacing:-.035em}.hero h1{font-size:clamp(38px,6vw,72px);line-height:.98;margin:16px 0 14px}.hero .tagline{font:900 clamp(21px,3vw,30px) Montserrat,sans-serif;color:var(--blue);margin:0 0 16px}.hero .intro{max-width:760px;font-size:18px;line-height:1.65;color:var(--muted);margin:0}.metrics{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}.metric{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.88);border:1px solid #d5e1ef;border-radius:999px;padding:9px 13px;font-size:13px;font-weight:900;box-shadow:0 5px 16px rgba(16,32,51,.04)}.catalog{position:relative;padding:32px 0 76px;background:linear-gradient(180deg,#f8fbff 0,#f3f7fc 45%,#f8fbff 100%)}.catalog:before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 12% 18%,rgba(11,99,206,.055) 0 2px,transparent 2.5px),radial-gradient(circle at 88% 72%,rgba(119,87,213,.045) 0 2px,transparent 2.5px);background-size:42px 42px,54px 54px;pointer-events:none}.catalog>.wrap{position:relative;z-index:1}.controls{display:grid;grid-template-columns:minmax(220px,1fr);gap:14px;margin-bottom:22px}.search{display:flex;align-items:center;border:1px solid #d5e1ef;background:rgba(255,255,255,.94);border-radius:15px;box-shadow:0 7px 22px rgba(16,32,51,.06);overflow:hidden}.search:before{content:"⌕";font:900 23px Montserrat,sans-serif;color:#7d8da2;margin-left:15px;line-height:1}.search input{width:100%;border:0;outline:0;font:700 16px Nunito,sans-serif;padding:14px 14px 14px 9px;background:transparent;color:var(--ink)}.search:focus-within{border-color:#9fc3ee;box-shadow:0 0 0 3px rgba(11,99,206,.09),0 7px 22px rgba(16,32,51,.06)}.chips{display:flex;gap:8px;overflow:auto;padding:2px 0 5px;scrollbar-width:thin}.chip{flex:0 0 auto;border:1px solid #d4deea;background:rgba(255,255,255,.9);border-radius:999px;padding:9px 12px;font:900 13px Nunito,sans-serif;color:#4e6077;cursor:pointer;transition:.16s ease}.chip:hover{transform:translateY(-1px);border-color:#b9cce2;background:#fff}.chip.active{background:var(--blue);border-color:var(--blue);color:#fff;box-shadow:0 5px 14px rgba(11,99,206,.2)}.catalog-head{display:flex;justify-content:space-between;align-items:end;gap:18px;margin:25px 0 17px}.catalog-head h2{font-size:25px;margin:0}.result-count{font-size:13px;color:var(--muted);font-weight:800}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px}.card{--accent:#1769d2;--accent-deep:#0b56b5;--card-soft:#edf5ff;position:relative;isolation:isolate;display:flex;flex-direction:column;min-height:190px;padding:19px;border:1px solid color-mix(in srgb,var(--accent) 18%,#dce4ee);border-radius:20px;text-decoration:none;background:linear-gradient(145deg,var(--card-soft) 0,#fff 58%);box-shadow:0 7px 20px rgba(16,32,51,.055);overflow:hidden;transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease}.card:before{content:"";position:absolute;left:0;top:0;right:0;height:4px;background:linear-gradient(90deg,var(--accent),color-mix(in srgb,var(--accent) 58%,#fff));z-index:0}.card:after{content:"";position:absolute;width:150px;height:150px;border-radius:50%;right:-70px;bottom:-80px;background:radial-gradient(circle,color-mix(in srgb,var(--accent) 12%,transparent),transparent 68%);z-index:-1;transition:transform .25s ease}.card:hover{transform:translateY(-4px);border-color:color-mix(in srgb,var(--accent) 42%,#dce4ee);box-shadow:0 16px 34px color-mix(in srgb,var(--accent) 13%,rgba(16,32,51,.1))}.card:hover:after{transform:scale(1.16)}.card:focus-visible{outline:3px solid color-mix(in srgb,var(--accent) 34%,transparent);outline-offset:3px}.card-top{display:flex;justify-content:space-between;gap:10px;align-items:center}.num{min-width:34px;height:34px;display:grid;place-items:center;border-radius:10px;background:color-mix(in srgb,var(--accent) 12%,#fff);color:var(--accent-deep);border:1px solid color-mix(in srgb,var(--accent) 12%,transparent);font-weight:900;font-size:13px}.category{font-size:10.5px;font-weight:900;color:var(--accent-deep);text-align:right;background:color-mix(in srgb,var(--accent) 8%,#fff);border:1px solid color-mix(in srgb,var(--accent) 13%,transparent);border-radius:999px;padding:5px 8px;line-height:1.15}.card-main{display:flex;align-items:center;gap:13px;margin:17px 0 11px;min-width:0}.card-icon{flex:0 0 48px;width:48px;height:48px;border-radius:15px;display:grid;place-items:center;color:var(--accent-deep);background:linear-gradient(145deg,color-mix(in srgb,var(--accent) 16%,#fff),color-mix(in srgb,var(--accent) 7%,#fff));border:1px solid color-mix(in srgb,var(--accent) 18%,transparent);box-shadow:inset 0 1px 0 rgba(255,255,255,.85),0 5px 14px color-mix(in srgb,var(--accent) 10%,transparent);transition:transform .2s ease}.card-icon svg{width:28px;height:28px;display:block;stroke:currentColor;fill:none;stroke-width:1.85;stroke-linecap:round;stroke-linejoin:round}.card:hover .card-icon{transform:scale(1.07) rotate(-2deg)}.card h3{font-size:18px;line-height:1.2;margin:0;min-width:0}.card-go{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;color:var(--accent-deep);font-size:13px;font-weight:900}.go-arrow{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:color-mix(in srgb,var(--accent) 11%,#fff);transition:transform .18s ease,background .18s ease}.card:hover .go-arrow{transform:translateX(3px);background:color-mix(in srgb,var(--accent) 18%,#fff)}.cat-numeros{--accent:#1769d2;--accent-deep:#0b56b5;--card-soft:#edf5ff}.cat-algebra{--accent:#7757d5;--accent-deep:#5c3fbd;--card-soft:#f3efff}.cat-geometria{--accent:#168b75;--accent-deep:#08715e;--card-soft:#ecfaf6}.cat-medidas{--accent:#d17a24;--accent-deep:#ad5c0d;--card-soft:#fff6e9}.cat-probabilidade{--accent:#c34f7b;--accent-deep:#a43962;--card-soft:#fff0f5}.cat-raciocinio{--accent:#5263c7;--accent-deep:#3d4dab;--card-soft:#f0f2ff}.empty{display:none;padding:34px;border:1px dashed #cbd8e7;border-radius:var(--radius);text-align:center;color:var(--muted);background:rgba(255,255,255,.72)}.footer{border-top:1px solid var(--line);padding:24px 0 34px;color:var(--muted);font-size:13px;background:#fff}.footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.detail-hero{padding:44px 0 22px;background:linear-gradient(180deg,#f4f8ff,#fff)}.detail-hero h1{font-size:clamp(30px,5vw,52px);line-height:1.05;margin:14px 0 8px}.detail-tag{font:900 20px Montserrat,sans-serif;color:var(--blue);margin:0}.detail-meta{margin-top:12px;color:var(--muted);font-size:13px;font-weight:800}.sim-section{padding:14px 0 34px}.sim-host{position:relative;border:1px solid var(--line);border-radius:20px;background:#fff;box-shadow:var(--shadow);overflow:hidden;min-height:440px}.sim-loading{position:absolute;inset:0;display:grid;place-items:center;padding:30px;text-align:center;color:var(--muted);font-weight:900;background:linear-gradient(135deg,#f8fbff,#fff);z-index:2}.sim-frame{display:block;width:100%;height:560px;border:0;opacity:0;transition:opacity .2s ease;background:#fff}.sim-frame.ready{opacity:1}.sim-error{padding:38px;text-align:center}.sim-error h2{margin-top:0}.sim-error p{color:var(--muted);line-height:1.6}.btn{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;font-weight:900;border-radius:12px;padding:12px 16px;border:1px solid var(--line)}.btn-primary{background:var(--blue);color:#fff;border-color:var(--blue)}.btn-secondary{background:#fff;color:var(--blue)}.next{padding:0 0 72px}.next h2{font-size:24px;margin:0 0 14px}.next-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.next-card{border:1px solid var(--line);border-radius:18px;padding:20px;background:var(--soft)}.next-card span{font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--blue);font-weight:900}.next-card h3{font-size:19px;margin:8px 0}.next-card p{color:var(--muted);line-height:1.55;margin:0 0 15px}.other{margin-top:14px}.other a{font-weight:900;color:var(--blue);text-decoration:none}
@media(max-width:980px){.hero:after{right:-3%;opacity:.7}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:850px){.hero{padding-top:52px}.next-grid{grid-template-columns:1fr}}@media(max-width:660px){.hero:after{display:none}}@media(max-width:560px){.wrap{width:min(100% - 22px,1180px)}.topbar .wrap{min-height:60px}.brand{font-size:14px}.brand small{font-size:9px}.toplink{font-size:12px}.hero{padding:40px 0 28px}.hero h1{font-size:42px}.hero .intro{font-size:16px}.catalog{padding-top:23px}.grid{grid-template-columns:1fr;gap:13px}.card{min-height:168px;padding:17px}.card-main{margin:14px 0 9px}.card-icon{width:44px;height:44px;flex-basis:44px;border-radius:13px}.card-icon svg{width:25px;height:25px}.category{max-width:58%;white-space:normal}.detail-hero{padding-top:30px}.sim-host{border-radius:14px;min-height:400px}.sim-frame{height:500px}.next{padding-bottom:48px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto}.card,.card:after,.card-icon,.go-arrow,.chip{transition:none!important}.card:hover,.chip:hover{transform:none}}