/* HUBMAT Visual — páginas autorais, sem fontes ou bibliotecas externas. */
:root{--ink:#15324b;--muted:#566877;--green:#146348;--soft:#eaf4e9;--gold:#f2c257;--paper:#f8f9f5;--line:#d6e0d8;--blue:#235f9b;--orange:#a4481a;color-scheme:light}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.55 system-ui,-apple-system,'Segoe UI',sans-serif}a{color:var(--green)}button,input,select,textarea{font:inherit;color:inherit}button,summary,a,input{touch-action:manipulation}button,summary{cursor:pointer}button:disabled{opacity:.48;cursor:not-allowed}[hidden]{display:none!important}:focus-visible{outline:3px solid #2977ca;outline-offset:4px}.skip{position:absolute;top:-100px;left:16px;z-index:50;background:white;padding:12px}.skip:focus{top:8px}.site-header{background:#fff;border-bottom:1px solid var(--line)}.header-inner{max-width:1180px;margin:auto;padding:14px 24px;display:flex;align-items:center;gap:20px}.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-size:18px;font-weight:850;line-height:1.2}.brand small{display:block;font-size:10px;letter-spacing:.07em}.mark{width:42px;height:42px;flex:0 0 42px;background:url('/assets/logo-hplus-novo.webp') center/contain no-repeat;font-size:0;letter-spacing:0}.mark span{display:none}.header-back{margin-left:auto;font-size:14px;text-decoration:none;padding:12px}.site-menu{position:relative}.site-menu summary{min-height:44px;padding:10px}.site-menu nav{position:absolute;right:0;top:48px;min-width:220px;padding:12px;z-index:30;border:1px solid var(--line);border-radius:12px;background:white;box-shadow:0 10px 30px #15324b22}.site-menu a{display:block;padding:10px;text-decoration:none}.lesson{max-width:1180px;margin:auto;padding:28px 24px}.lesson-heading{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:24px}.eyebrow,.step-label{font-size:12px;font-weight:750;letter-spacing:.07em;text-transform:uppercase;color:var(--green)}.eyebrow{margin:0 0 6px}h1{font-size:clamp(29px,4vw,44px);letter-spacing:-.035em;line-height:1.1;margin:0 0 10px}h2{font-size:clamp(23px,3vw,29px);line-height:1.2;letter-spacing:-.02em;margin:8px 0 12px}h2:focus{outline:none}.lesson-heading p:last-child{margin:0;color:var(--muted)}.curriculum-tag{display:none}.journey{margin:0 0 20px}.journey-top{display:flex;justify-content:space-between;gap:10px;font-size:12px;margin-bottom:8px}.phases{list-style:none;display:flex;gap:22px;padding:0;margin:0;font-weight:750;color:var(--muted)}.phases [aria-current]{color:var(--green)}progress{display:block;width:100%;height:8px;border:0;border-radius:10px;overflow:hidden;background:#e0e8dd;accent-color:var(--green)}progress::-webkit-progress-bar{background:#e0e8dd}progress::-webkit-progress-value{background:var(--green)}.challenge{background:white;border:1px solid var(--line);border-radius:20px;overflow:hidden;margin-bottom:20px;scroll-margin-top:16px}.challenge-top{padding:24px 26px 12px}.lead{margin:0;color:#3c5666}.workspace{background:#f2f6ef;border:1px solid #e2e9dc;border-radius:14px;margin:12px 16px 20px;padding:16px;min-width:0;overflow:hidden}.workspace>svg{width:100%;max-height:520px;display:block}.workspace svg text{font-family:system-ui,sans-serif;fill:var(--ink)}.gridline{stroke:#cbd9c7;stroke-width:1}.axis{stroke:#607584;stroke-width:2}.mainline{stroke:var(--blue);stroke-width:4;fill:none}.otherline{stroke:var(--orange);stroke-width:4;fill:none;stroke-dasharray:9 5}.fill{fill:#bed9ef;stroke:var(--blue);stroke-width:2}.highlight{fill:var(--gold);stroke:#9a711b;stroke-width:1}.handle{cursor:grab;touch-action:none;fill:var(--blue);stroke:#fff;stroke-width:3}.handle:focus-visible{outline:none;stroke:#102d49;stroke-width:6}.big-value{font-size:clamp(21px,3vw,28px);font-weight:800;text-align:center;line-height:1.3;margin:12px 0;overflow-wrap:anywhere}.readout{padding:10px;background:white;border-radius:10px;font-size:14px;text-align:center;margin:12px 0}.board-note,.small{font-size:12px;color:var(--muted)}.board-note{text-align:center;margin:12px 0 0}.actions{padding:12px 26px 22px;min-width:0}.button-row{display:flex;gap:9px;flex-wrap:wrap;margin:12px 0}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:46px;min-width:46px;padding:10px 14px;border:1px solid #b8cbba;border-radius:10px;background:white;font-size:14px;font-weight:700;line-height:1.35;text-decoration:none}.btn:hover:not(:disabled){background:#edf5eb}.btn.primary{background:var(--green);border-color:var(--green);color:#fff;box-shadow:0 3px 0 #0d4936}.btn.primary:hover:not(:disabled){background:#0f503b}.btn[aria-pressed=true]{border-color:var(--green);background:var(--soft);outline:2px solid var(--green)}.choice-row{display:grid;gap:8px;border:0;padding:0;margin:12px 0}.choice-row legend{font-weight:750;font-size:14px;margin-bottom:8px}.choice-row label{display:flex;align-items:center;gap:9px;padding:12px;border:1px solid var(--line);border-radius:10px;font-size:14px;min-height:46px;cursor:pointer}.choice-row label:has(:checked){background:var(--soft);border-color:var(--green)}input[type=radio],input[type=checkbox]{width:18px;height:18px;flex-shrink:0;accent-color:var(--green)}.fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.fields label,.field{display:flex;flex-direction:column;gap:6px;font-size:14px;font-weight:650;margin:10px 0}.field input,.fields input,.field select,.field textarea{width:100%;min-height:46px;padding:10px;border:1px solid #a6b7bb;border-radius:9px;background:white;font-size:17px}.field textarea{min-height:110px;resize:vertical;font-size:15px}.selfcheck{display:flex;align-items:flex-start;gap:9px;font-size:14px;padding:10px 0;min-height:44px}.nudge{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin:8px 0;font-size:14px}.nudge>span{min-width:100px;font-weight:650}.nudge output{min-width:28px;text-align:center;font-weight:800}.hint{font-size:14px;color:var(--muted);margin-top:12px}.hint summary,.teacher summary{padding:10px 0;min-height:44px;font-weight:700;color:var(--green)}.hint p{padding-left:12px;border-left:3px solid #b7cfb0}.feedback{grid-column:1/-1;min-height:64px;padding:14px 26px;background:#f6f8f2;border-top:1px solid var(--line);font-size:14px}.feedback[data-tone=good]{background:#eaf4e7;color:#164d30}.feedback[data-tone=retry]{background:#fff3dc;color:#714216}.lesson-controls{display:flex;justify-content:space-between;gap:12px;margin:20px 0}.finish{padding:24px;border:1px solid #b6d3b4;background:#edf6e8;border-radius:18px}.teacher{border-top:1px solid var(--line);font-size:14px;color:var(--muted);margin-top:28px}.teacher p{max-width:880px}.footer{max-width:1120px;margin:auto;border-top:1px solid var(--line);padding:22px 24px;display:flex;justify-content:space-between;gap:20px;font-size:12px;color:var(--muted)}.footer p{margin:0}.signature{text-align:right}.signature a{display:block;font-weight:750;text-decoration:none}.notice,.paper-answer{padding:16px;font-size:14px;color:var(--muted)}.notice{background:#fff3dc;border-radius:12px}.is-ready .paper-answer{display:none}.metric-row,.value-pair{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}.metric-row p,.value-pair p{background:white;border-radius:10px;padding:10px 14px;text-align:center;font-size:13px;margin:5px;min-width:85px}.metric-row strong,.metric-row b,.value-pair strong{display:block;font-size:23px}.share-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.share-person{min-width:0;background:white;border:1px solid var(--line);border-radius:10px;padding:10px}.share-person header{display:flex;justify-content:space-between;gap:6px;font-size:13px;font-weight:700}.quarter{display:inline-grid;place-items:center;width:29px;height:29px;background:var(--gold);border:1px solid #9a711b;border-radius:4px;font-size:16px}.person-parts{display:flex;flex-wrap:wrap;gap:4px;min-height:42px;padding:6px 0}.fraction-bank{padding:12px;border:1px dashed #8ba37f;background:white;border-radius:10px;margin-bottom:12px}.fraction-bank>div{display:flex;justify-content:center;flex-wrap:wrap;gap:5px;min-height:30px}.fraction-bank p{font-size:12px;text-align:center;margin-top:0}.fraction-controls{display:flex;gap:8px;flex-wrap:wrap}.fraction-controls .btn{flex:1}.reveal-note{padding:12px;background:#edf6e8;border-radius:10px;font-size:14px}.tileboard{display:grid;grid-template-columns:repeat(4,1fr);gap:4px;max-width:300px;margin:16px auto}.tileboard .btn{aspect-ratio:1;padding:0;font-size:19px;min-height:44px}.tileboard [aria-pressed=true]{background:var(--gold)}.tokens,.urn{display:flex;flex-wrap:wrap;justify-content:center;gap:9px;margin:16px auto;max-width:420px}.urn{border:2px dashed #799087;border-radius:16px;padding:16px}.token,.urn-token{display:inline-grid;place-items:center;width:36px;height:36px;font-weight:800;border-radius:50%;border:2px solid var(--blue);background:#d3e5f7;color:#164774}.token.alt,.urn-token.amber{background:#ffe6b6;border-color:#9a6115;color:#684111}.tokens button,.urn button{min-width:46px;min-height:46px}.draw-history,.sample-log{display:flex;gap:5px;flex-wrap:wrap;justify-content:center;min-height:40px;margin:10px}.draw-history .token{width:29px;height:29px;font-size:12px}.simulation-counts{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.simulation-counts div{padding:10px 5px;background:white;text-align:center;border-radius:9px;font-size:12px}.simulation-counts strong{display:block;font-size:23px}.equation-stack{font-size:clamp(20px,3vw,28px);font-weight:750;text-align:center;padding:16px}.equation-stack p{margin:8px 0}.data-table,.value-table{width:100%;border-collapse:collapse;text-align:center;font-size:14px;background:white}.data-table th,.data-table td,.value-table th,.value-table td{padding:8px 5px;border-bottom:1px solid var(--line)}.data-table caption,.value-table caption{font-size:12px;color:var(--muted);padding:6px}.legend{display:flex;justify-content:center;gap:16px;font-size:12px;flex-wrap:wrap}.legend b{display:inline-block;width:20px;height:4px;background:var(--blue);vertical-align:middle;margin-right:4px}.legend .orange{background:var(--orange)}.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
@media(min-width:900px){.challenge{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(270px,.55fr)}.workspace:has(svg){min-height:360px;display:grid;place-items:center}.journey{position:sticky;top:8px;z-index:18;background:#f8f9f5ee;backdrop-filter:blur(8px);padding:8px 10px;border:1px solid #d6e0d8;border-radius:12px}.challenge-top,.paper-answer{grid-column:1/-1}.workspace{align-self:start}.actions{padding-left:10px;display:flex;flex-direction:column;justify-content:center}.challenge[data-kind=create] .workspace,.challenge[data-kind=create] .actions{grid-column:1/-1}.challenge[data-kind=create] .actions{padding:12px 26px 22px}}@media(max-width:650px){.header-inner{padding:10px 14px;gap:8px}.brand{font-size:15px}.brand small{font-size:9px}.mark{font-size:29px}.header-back{font-size:12px;padding:10px 6px;max-width:110px;text-align:center}.site-menu summary{font-size:12px;padding:10px 6px}.lesson{padding:20px 12px}.lesson-heading{display:block}.curriculum-tag{display:none}.lesson-heading p:last-child{font-size:14px}.phases{gap:12px;font-size:11px}.journey-top{font-size:11px}.challenge-top{padding:18px 18px 10px}.lead{font-size:15px}.workspace{margin:8px 8px 12px;padding:12px 8px}.actions{padding:10px 18px 20px}.feedback{padding:14px 18px}.footer{padding:20px 16px;font-size:11px}.lesson-controls .btn{font-size:13px;padding:10px 12px}.fields{gap:8px}.data-table,.value-table{font-size:12px}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}@media print{body{background:white}.site-header,.journey,.lesson-controls,[data-live-only],.feedback{display:none!important}.challenge,.challenge[hidden]{display:block!important;break-inside:avoid}.paper-answer,.is-ready .paper-answer{display:block}.lesson{max-width:none;padding:0}}

.challenge{box-shadow:0 7px 24px rgba(21,50,75,.045)}.workspace{transition:border-color .16s ease,box-shadow .16s ease}.challenge:focus-within .workspace{border-color:#c2d5c2;box-shadow:0 5px 18px rgba(20,99,72,.06)}.feedback{transition:background-color .16s ease,color .16s ease}

.challenge[data-state=complete]{border-color:#9bc89d;box-shadow:0 9px 28px rgba(20,99,72,.09)}.challenge[data-state=complete] .workspace{border-color:#c5ddc3}.challenge[data-state=retry]{border-color:#e3c88f}.challenge[data-state=retry] .workspace{border-color:#eadbb8}

/* Refinamento móvel: progresso sempre visível, alvos de toque amplos e conteúdo matemático sem corte. */
@media(max-width:650px){
  .journey{position:sticky;top:0;z-index:18;background:rgba(248,249,245,.96);backdrop-filter:blur(8px);padding:8px 10px;border:1px solid var(--line);border-radius:12px;box-shadow:0 6px 18px rgba(21,50,75,.07)}
  .phases{gap:6px;flex-wrap:wrap}
  .phases li{padding:4px 7px;border-radius:999px}
  .phases [aria-current]{background:var(--soft);box-shadow:inset 0 0 0 1px #bcd2bf}
  .challenge{scroll-margin-top:92px}
  .workspace{overflow-x:auto;-webkit-overflow-scrolling:touch}
  .button-row>.btn{flex:1 1 132px;min-height:48px}
  .lesson-controls{position:sticky;bottom:8px;z-index:16;padding:8px;background:rgba(248,249,245,.96);backdrop-filter:blur(8px);border:1px solid var(--line);border-radius:12px;box-shadow:0 8px 24px rgba(21,50,75,.10)}
  .lesson-controls .btn{flex:1;min-height:48px}
}