:root{--ink:#111827;--muted:#5f6875;--line:#e6e9ee;--soft:#f6f8fb;--blue:#2457f5;--blue2:#0f3fd6;--cyan:#dff4ff;--green:#e8f8ef;--amber:#fff5d8;--rose:#fff0ef;--radius:22px;--shadow:0 18px 50px rgba(17,24,39,.08)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:#fff;line-height:1.55}a{color:inherit;text-decoration:none}button,input{font:inherit}.shell{width:min(1160px,calc(100% - 40px));margin:auto}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.topbar{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.93);backdrop-filter:blur(14px);border-bottom:1px solid rgba(230,233,238,.9)}.nav{height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.02em}.brand-mark{width:36px;height:36px;display:grid;place-items:center;background:var(--ink);color:#fff;border-radius:12px;font-weight:900}.navlinks{display:flex;align-items:center;gap:22px;font-size:14px;font-weight:700;color:#4b5563}.navlinks a:hover{color:var(--blue)}
.eyebrow,.mini-label,.block-kicker{display:inline-block;font-size:12px;font-weight:900;letter-spacing:.13em;text-transform:uppercase;color:var(--blue)}.hero{padding:82px 0 64px;background:radial-gradient(circle at 85% 25%,#e8f1ff 0,transparent 28%),linear-gradient(#fff,#fbfcff)}.hero-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(300px,.75fr);gap:54px;align-items:center}.hero h1,.term-hero h1{font-size:clamp(46px,7vw,86px);line-height:.96;letter-spacing:-.065em;margin:15px 0 24px;max-width:860px}.hero h1 span{color:var(--blue)}.hero-copy{max-width:760px;font-size:20px;color:var(--muted);margin:0 0 28px}.search-box{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:12px;max-width:760px;border:1px solid #d8dde6;border-radius:18px;padding:8px 8px 8px 18px;background:#fff;box-shadow:var(--shadow)}.search-box span{font-size:26px;color:#7b8491}.search-box input{border:0;outline:0;min-width:0;font-size:17px;padding:11px 0}.search-box button{border:0;background:var(--ink);color:#fff;border-radius:12px;padding:12px 18px;font-weight:800;cursor:pointer}.hero-stats{display:flex;flex-wrap:wrap;gap:12px 22px;margin-top:20px;color:#5f6875;font-size:14px}.hero-stats strong{color:var(--ink)}.hero-card{background:#101727;color:#fff;border-radius:26px;padding:30px;box-shadow:0 25px 70px rgba(16,23,39,.22)}.hero-card .mini-label{color:#9fc0ff}.flow{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin:22px 0 18px}.flow b{background:#fff;color:#101727;border-radius:999px;padding:8px 11px;font-size:13px}.flow i{font-style:normal;color:#88a4df}.hero-card p{color:#cbd5e1}.inline-link{font-weight:900;color:var(--blue)}.hero-card .inline-link{color:#fff}
.confuse{padding:74px 0}.section-head{max-width:780px;margin-bottom:28px}.section-head h2{font-size:clamp(34px,4vw,52px);line-height:1.04;letter-spacing:-.045em;margin:8px 0 12px}.section-head p{color:var(--muted);font-size:18px;margin:0}.section-head.split{display:flex;max-width:none;align-items:end;justify-content:space-between;gap:30px}.count{font-weight:800;color:var(--muted);padding-bottom:8px}.compare-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.compare-card{border:1px solid var(--line);border-radius:20px;padding:22px;transition:.2s;background:#fff}.compare-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#cfd7e4}.compare-card span{font-size:12px;font-weight:800;color:var(--blue)}.compare-card strong{display:block;font-size:20px;margin:6px 0}.compare-card p{margin:0;color:var(--muted);font-size:14px}
.dictionary{padding:72px 0 90px;background:var(--soft)}.filters{display:flex;flex-wrap:wrap;gap:9px;margin:26px 0 18px}.filter{border:1px solid #d8dde6;background:#fff;color:#394150;border-radius:999px;padding:10px 15px;font-weight:800;font-size:13px;cursor:pointer}.filter.active{background:var(--ink);border-color:var(--ink);color:#fff}.alphabet{display:flex;flex-wrap:wrap;gap:7px;margin:0 0 28px}.alphabet button{min-width:34px;height:34px;padding:0 9px;border-radius:10px;border:1px solid #dce1e8;background:#fff;font-weight:800;color:#5b6471;cursor:pointer}.alphabet button:hover,.alphabet button.active{border-color:var(--blue);color:var(--blue);background:#eef3ff}.alphabet .alpha-all{min-width:58px}.term-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.term-card{background:#fff;border:1px solid #e1e5eb;border-radius:18px;padding:20px;min-height:162px;display:flex;flex-direction:column;transition:.18s}.term-card:hover{transform:translateY(-3px);border-color:#c7d2e3;box-shadow:0 14px 35px rgba(17,24,39,.07)}.term-card .cat{font-size:11px;color:var(--blue);font-weight:900;text-transform:uppercase;letter-spacing:.08em}.term-card h3{font-size:19px;line-height:1.15;margin:9px 0 8px}.term-card p{font-size:13px;color:var(--muted);margin:0 0 14px}.term-card .go{margin-top:auto;font-weight:900;font-size:13px}.empty{text-align:center;padding:50px;border:1px dashed #ccd3dd;border-radius:18px;color:var(--muted)}.empty strong,.empty span{display:block}.empty strong{color:var(--ink);font-size:20px}
.network{padding:84px 0}.network-box{background:#101727;border-radius:28px;color:#fff;padding:42px;display:grid;grid-template-columns:.8fr 1.2fr;gap:48px}.eyebrow.light{color:#9fc0ff}.network h2{font-size:42px;letter-spacing:-.045em;line-height:1.05;margin:10px 0 15px}.network p{color:#bfc9d7}.network-links{display:grid;grid-template-columns:1fr 1fr;gap:12px}.network-links a{background:#182236;border:1px solid #2a3650;border-radius:17px;padding:18px}.network-links span{display:block;color:#9eabc0;font-size:12px}.network-links strong{display:block;margin-top:4px}
.term-hero{padding:68px 0 44px;background:linear-gradient(180deg,#f8fbff,#fff)}.breadcrumb{display:flex;gap:8px;align-items:center;color:#7a8390;font-size:14px;margin-bottom:30px}.breadcrumb a{font-weight:800;color:#394150}.term-hero h1{font-size:clamp(52px,8vw,92px);margin-bottom:18px}.term-lead{max-width:850px;font-size:clamp(20px,2.4vw,28px);line-height:1.35;color:#3b4655;margin:0}.term-content{padding:38px 0 90px}.term-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:26px;align-items:start}.term-main{display:grid;gap:18px}.block{border:1px solid var(--line);border-radius:24px;padding:30px;background:#fff}.block h2{font-size:30px;line-height:1.12;letter-spacing:-.035em;margin:8px 0 16px}.visual-block{background:linear-gradient(135deg,#0f172a,#17284a);color:#fff;border:0}.visual-block .block-kicker{color:#9fc0ff}.math-visual{font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.13);border-radius:18px;padding:28px;margin-top:22px;font-size:clamp(22px,4vw,40px);font-weight:800;line-height:1.35;white-space:pre-wrap;overflow-wrap:anywhere}.big-copy{font-size:22px;color:#3f4854}.two-blocks{display:grid;grid-template-columns:1fr 1fr;gap:18px}.compact p{font-size:18px;margin:9px 0 0}.caution{background:var(--amber)}.mistake{background:var(--rose)}.practice>p{color:var(--muted)}.practice-item{border-top:1px solid var(--line);padding:20px 0}.practice-item:first-child{margin-top:8px}.practice-q{font-weight:850;margin-bottom:10px}.options{display:grid;gap:8px}.option{width:100%;text-align:left;border:1px solid #dce1e8;background:#fff;border-radius:13px;padding:11px 13px;cursor:pointer;color:#374151}.option:hover{border-color:#aeb9c8}.option.correct{background:var(--green);border-color:#a9dbc0}.option.wrong{background:var(--rose);border-color:#efc0bd}.feedback{font-size:13px;font-weight:800;margin-top:8px}.related-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.related-link{border:1px solid var(--line);border-radius:14px;padding:14px;font-weight:850}.related-link span{float:right;color:var(--blue)}.term-side{position:sticky;top:92px;display:grid;gap:14px}.side-card{border:1px solid var(--line);border-radius:22px;padding:24px;background:#fff}.side-card h3{font-size:24px;letter-spacing:-.03em;margin:8px 0}.side-card p{font-size:14px;color:var(--muted)}.side-actions{display:grid;gap:9px}.side-actions a{display:flex;justify-content:space-between;align-items:center;background:var(--ink);color:#fff;border-radius:13px;padding:12px 14px;font-weight:850;font-size:14px}.side-actions a.secondary{background:#edf3ff;color:#1f4ed8}.side-card.muted{background:var(--soft)}.side-card.muted a{display:flex;justify-content:space-between;padding:11px 0;border-bottom:1px solid #dfe4eb;font-weight:800;font-size:14px}.side-card.muted a:last-child{border-bottom:0}
.hub-v2-back-top{position:fixed;right:22px;bottom:22px;width:42px;height:42px;border-radius:14px;border:1px solid #d9dee6;background:#fff;display:grid;place-items:center;box-shadow:0 10px 30px rgba(17,24,39,.12);cursor:pointer;z-index:20;opacity:0;transform:translateY(8px);pointer-events:none;transition:.2s}.hub-v2-back-top.is-visible{opacity:1;transform:none;pointer-events:auto}.hub-v2-footer{border-top:1px solid #e6e9ee;background:#fff}.hub-v2-footer-inner{min-height:54px;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:13px;color:#626b77}.hub-v2-footer p{margin:0}.hub-v2-footer a:hover{color:var(--blue)}.hub-v2-social{display:flex;align-items:center;gap:10px}.hub-v2-social a{width:30px;height:30px;display:grid;place-items:center;border:1px solid #e1e5eb;border-radius:10px}
@media(max-width:980px){.navlinks{display:none}.hero-grid,.network-box,.term-layout{grid-template-columns:1fr}.hero-card{max-width:650px}.compare-grid,.term-grid{grid-template-columns:1fr 1fr}.term-side{position:static}.network-links{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.shell{width:min(100% - 24px,1160px)}.nav{height:62px}.brand{font-size:14px}.brand-mark{width:33px;height:33px}.hero{padding:52px 0 42px}.hero h1,.term-hero h1{font-size:48px}.hero-copy{font-size:17px}.search-box{grid-template-columns:auto 1fr;padding:7px 12px}.search-box button{grid-column:1/-1;width:100%}.hero-stats{display:grid;gap:6px}.confuse,.dictionary,.network{padding:52px 0}.compare-grid,.term-grid,.network-links,.two-blocks,.related-grid{grid-template-columns:1fr}.section-head.split{display:block}.network-box{padding:26px 20px}.network h2{font-size:34px}.term-hero{padding:44px 0 28px}.term-hero h1{margin-top:10px;font-size:clamp(38px,12vw,48px);letter-spacing:-.045em}.term-lead{font-size:20px}.term-content{padding-top:18px}.block{padding:22px 19px;border-radius:20px}.block h2{font-size:25px}.math-visual{padding:20px;font-size:23px}.hub-v2-footer-inner{padding:12px 0;flex-direction:column;text-align:center;min-height:74px}.hub-v2-back-top{right:14px;bottom:14px}}
/* Rodapé idêntico ao padrão visual da Home HUBMAT */
.hub-v2-footer{position:relative!important;z-index:10!important;isolation:isolate!important;flex:0 0 auto!important;flex-shrink:0!important;width:100%!important;min-height:78px!important;height:auto!important;max-height:none!important;margin:0!important;margin-top:auto!important;padding:0!important;border:0!important;border-top:3px solid #d4a017!important;background:#0b1c3c!important;background-color:#0b1c3c!important;background-image:none!important;color:#fff!important;opacity:1!important;filter:none!important;mix-blend-mode:normal!important;overflow:visible!important}.hub-v2-footer .shell{width:min(1180px,calc(100% - 40px));margin-inline:auto}.hub-v2-footer-inner{min-height:75px!important;display:flex!important;flex-direction:column!important;align-items:center!important;justify-content:center!important;gap:7px!important;padding:10px 0 max(10px,env(safe-area-inset-bottom))!important;text-align:center!important;color:#fff!important;font-size:13px!important}.hub-v2-footer p{margin:0!important;padding:0!important;color:#fff!important;font-size:13px!important;line-height:1.35!important;font-weight:900!important}.hub-v2-footer p a{color:#fff!important;text-decoration:none!important}.hub-v2-footer p a:hover{color:#fff!important;text-decoration:underline!important}.hub-v2-social{display:flex!important;align-items:center!important;justify-content:center!important;gap:8px!important;margin:0!important;padding:0!important}.hub-v2-social a{width:30px!important;height:30px!important;min-width:30px!important;min-height:30px!important;display:grid!important;place-items:center!important;margin:0!important;padding:0!important;border:1px solid rgba(255,255,255,.22)!important;border-radius:50%!important;background:transparent!important;color:#f6d46b!important;text-decoration:none!important;line-height:1!important}.hub-v2-social a:hover{transform:translateY(-2px);background:rgba(255,255,255,.08)!important}.hub-v2-back-top{position:fixed!important;right:max(18px,env(safe-area-inset-right))!important;bottom:max(18px,calc(env(safe-area-inset-bottom) + 10px))!important;z-index:2147482000!important;width:44px!important;height:44px!important;display:grid!important;place-items:center!important;border:1px solid rgba(255,255,255,.3)!important;border-radius:50%!important;background:#0b1c3c!important;color:#fff!important;box-shadow:0 10px 26px rgba(11,28,60,.24)!important;cursor:pointer!important;opacity:0;visibility:hidden;transform:translateY(8px);transition:.18s ease}.hub-v2-back-top.is-visible{opacity:1!important;visibility:visible!important;transform:none!important;pointer-events:auto!important}