.quiz-shell{width:min(820px,calc(100% - 32px));margin:auto;padding:64px 0 96px}
.quiz-head h1{font-size:clamp(34px,6vw,56px);line-height:1.05;margin:16px 0}
.quiz-head em{color:var(--blue);font-style:normal}
.quiz-head strong{color:var(--orange)}
.quiz-lead{max-width:60ch}
.quiz-progress{margin:36px 0 20px}
.quiz-progress-meta{display:flex;justify-content:space-between;gap:12px;font-family:var(--mono);font-size:11px;text-transform:uppercase;letter-spacing:.08em;margin-bottom:10px}
.quiz-progress .bar-track{height:10px}
.quiz-progress-bar{height:100%;width:0;background:var(--cyan);transition:width .4s ease}
.quiz-card{background:#fff;border:1px solid var(--line);padding:32px;box-shadow:8px 8px 0 var(--cyan)}
.quiz-card h2{font-size:clamp(22px,3.5vw,28px);line-height:1.2;margin:0 0 24px}
.quiz-options{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.quiz-option{width:100%;text-align:left;display:flex;gap:14px;align-items:flex-start;padding:14px 16px;font:inherit;color:var(--ink);background:var(--paper);border:1.5px solid var(--line);cursor:pointer;transition:border-color .15s,background .15s}
.quiz-option:hover:not(:disabled){border-color:var(--blue);background:var(--ice)}
.quiz-option:disabled{cursor:default}
.quiz-option b{font-family:var(--mono);text-transform:uppercase;color:var(--blue)}
.quiz-option.correct{border-color:#2f9e44;background:#e6f6ea}
.quiz-option.wrong{border-color:#d9480f;background:#fdece4}
.quiz-feedback{margin-top:20px;padding:16px;border-left:4px solid var(--cyan);background:var(--ice)}
.quiz-feedback.ok{border-color:#2f9e44;background:#e6f6ea}
.quiz-feedback.no{border-color:#d9480f;background:#fdece4}
.quiz-feedback p{margin:4px 0 0}
.quiz-card .button{border:0;cursor:pointer;margin-top:24px}
.quiz-result{text-align:center}
.quiz-result .big-score{font-size:clamp(56px,12vw,96px);font-weight:700;line-height:1;color:var(--blue)}
.quiz-result .big-score small{font-size:.4em;color:var(--ink)}
.quiz-review{list-style:none;padding:0;margin:28px 0 0;text-align:left;display:grid;gap:10px}
.quiz-review li{padding:12px 14px;border-left:4px solid var(--line);background:var(--paper);font-size:16px}
.quiz-review li.ok{border-color:#2f9e44}
.quiz-review li.no{border-color:#d9480f}
.quiz-review small{display:block;margin-top:4px;opacity:.8}
.quiz-cta-section{background:var(--deep);color:#fff;padding:100px 0}
.quiz-cta-inner{display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center}
.quiz-cta-inner h2{margin:12px 0}
.quiz-cta-inner h2 span{color:var(--lime)}
.quiz-cta-inner .button-primary{background:var(--lime);color:var(--ink);box-shadow:8px 8px 0 var(--cyan)}
.quiz-cta-inner .button-primary span{color:var(--ink)}
@media(max-width:850px){.quiz-cta-inner{grid-template-columns:1fr}.quiz-card{padding:20px}}
.brand-name{display:flex;flex-direction:column;line-height:1.15}
.brand-name small{font-size:10px;font-weight:400;letter-spacing:.12em;text-transform:uppercase;color:var(--orange)}
.main-nav a.nav-quiz{background:var(--lime);color:var(--ink);font-weight:700;padding:6px 14px;border-radius:999px;box-shadow:3px 3px 0 var(--cyan);transition:transform .15s}
.main-nav a.nav-quiz:hover{color:var(--ink);transform:translateY(-2px)}

/* página do quiz: tudo visível sem rolar a tela */
.quiz-page{height:100vh;height:100dvh;display:flex;flex-direction:column;overflow:hidden}
.quiz-page .site-header{height:60px;flex:none}
.quiz-page .quiz-shell{flex:1;min-height:0;display:flex;flex-direction:column;padding:14px 0 16px;width:min(980px,calc(100% - 32px))}
.quiz-page .quiz-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:4px 20px}
.quiz-page .quiz-head .eyebrow{display:none}
.quiz-page .quiz-head h1{font-size:clamp(18px,2.6vw,26px);margin:0}
.quiz-page .quiz-lead{margin:0;font-family:var(--mono);font-size:11px;text-transform:uppercase;letter-spacing:.06em}
.quiz-page .quiz-progress{margin:10px 0}
.quiz-page .quiz-progress-meta{margin-bottom:6px}
.quiz-page .quiz-progress .bar-track{height:6px}
.quiz-page .quiz-card{flex:1;min-height:0;overflow:auto;padding:18px 22px;box-shadow:6px 6px 0 var(--cyan);display:flex;flex-direction:column}
.quiz-page .quiz-card[hidden]{display:none}
.quiz-page .quiz-card h2{font-size:clamp(17px,2.2vw,22px);margin:0 0 14px}
.quiz-page .quiz-options{grid-template-columns:1fr 1fr;gap:8px}
.quiz-page .quiz-option{padding:10px 12px;font-size:15px;line-height:1.3}
.quiz-page #quiz-feedback{margin-top:auto;padding-top:12px;display:flex;gap:14px;align-items:stretch}
.quiz-page #quiz-feedback:empty{display:none}
.quiz-page .quiz-feedback{flex:1;margin:0;padding:10px 14px;font-size:15px;line-height:1.35}
.quiz-page .quiz-card .button{margin:0;align-self:center;white-space:nowrap;padding:12px 16px;gap:16px}
.quiz-page .quiz-result{text-align:left;display:grid;grid-template-columns:240px 1fr;gap:4px 24px;align-content:start}
.quiz-page .quiz-result[hidden]{display:none}
.quiz-page .quiz-result .big-score{font-size:64px}
.quiz-page .quiz-result>.kicker,.quiz-page .quiz-result>.big-score,.quiz-page .quiz-result>p,.quiz-page .quiz-result>.button{grid-column:1}
.quiz-page .quiz-result>p{margin:4px 0 8px}
.quiz-page .quiz-result>.button{margin-top:6px;align-self:start}
.quiz-page .quiz-review{grid-column:2;grid-row:1/8;margin:0;gap:6px}
.quiz-page .quiz-review li{padding:6px 10px;font-size:13px;line-height:1.3}
.quiz-page .quiz-review small{margin-top:2px}
@media(max-width:700px){
  .quiz-page .quiz-options{grid-template-columns:1fr}
  .quiz-page .quiz-option{padding:8px 10px;font-size:14px}
  .quiz-page #quiz-feedback{flex-direction:column;gap:8px}
  .quiz-page .quiz-card .button{align-self:stretch;justify-content:space-between}
  .quiz-page .quiz-head .quiz-lead{display:none}
  .quiz-page .quiz-result{grid-template-columns:1fr}
  .quiz-page .quiz-result>*,.quiz-page .quiz-review{grid-column:1;grid-row:auto}
}

/* ===== refinamento visual ===== */
.quiz-page{background:radial-gradient(900px 500px at 85% -10%,rgba(56,189,248,.18),transparent 60%),radial-gradient(700px 400px at -10% 110%,rgba(215,243,91,.22),transparent 60%),var(--paper)}
.quiz-page .quiz-shell{justify-content:center;gap:0;padding:12px 0 20px}
.quiz-page .quiz-head{justify-content:center;text-align:center;flex-direction:column;align-items:center;margin-bottom:6px}
.quiz-page .quiz-head h1{letter-spacing:-.01em}
.quiz-page .quiz-lead{opacity:.6}
.quiz-page .quiz-progress{margin:10px 0 14px}
.quiz-page .quiz-progress-meta{font-size:10px;opacity:.75}
.quiz-page #quiz-score{color:var(--blue);font-weight:700}
.quiz-steps{display:grid;grid-template-columns:repeat(10,1fr);gap:5px}
.quiz-steps i{height:6px;border-radius:99px;background:rgba(6,40,61,.12);transition:background .3s,transform .3s}
.quiz-steps i.ok{background:#2f9e44}
.quiz-steps i.no{background:#d9480f}
.quiz-steps i.now{background:var(--cyan);transform:scaleY(1.6)}
.quiz-page .quiz-card{flex:0 1 auto;position:relative;border:1px solid var(--line);border-radius:22px;padding:26px 30px 24px;overflow:auto;background:linear-gradient(#fff,#fff) padding-box;box-shadow:0 1px 0 #fff inset,0 2px 4px rgba(6,40,61,.05),0 18px 40px -12px rgba(6,40,61,.22)}
.quiz-page .quiz-card::before{content:"";position:absolute;inset:0 0 auto 0;height:4px;background:linear-gradient(90deg,var(--cyan),var(--lime) 60%,var(--orange))}
.quiz-pill{align-self:flex-start;display:inline-block;margin-bottom:10px;padding:4px 11px;border-radius:99px;font-family:var(--mono);font-size:10px;text-transform:uppercase;letter-spacing:.1em;background:var(--ice);color:var(--blue)}
.quiz-pill-intermediario{background:#fff1d6;color:#a35a00}
.quiz-pill-avancado{background:#ffe3dc;color:#b8381a}
.quiz-page .quiz-card h2{font-size:clamp(18px,2.3vw,23px);line-height:1.25;letter-spacing:-.01em;margin:0 0 18px}
.quiz-page .quiz-option{align-items:center;gap:12px;padding:11px 14px;border-radius:14px;background:#fff;border:1.5px solid var(--line);box-shadow:0 1px 2px rgba(6,40,61,.05);transition:transform .15s,box-shadow .15s,border-color .15s,background .15s}
.quiz-page .quiz-option:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 18px -8px rgba(7,89,133,.35);background:#fff}
.quiz-page .quiz-option b{flex:none;width:28px;height:28px;display:grid;place-items:center;border-radius:50%;background:var(--ice);font-size:12px;transition:background .15s,color .15s}
.quiz-page .quiz-option:hover:not(:disabled) b{background:var(--blue);color:#fff}
.quiz-page .quiz-option:disabled:not(.correct):not(.wrong){opacity:.55}
.quiz-page .quiz-option.correct{background:#eaf7ee;border-color:#2f9e44}
.quiz-page .quiz-option.correct b{background:#2f9e44;color:#fff}
.quiz-page .quiz-option.wrong{background:#fdeee7;border-color:#d9480f}
.quiz-page .quiz-option.wrong b{background:#d9480f;color:#fff}
.quiz-page #quiz-feedback{margin-top:16px;padding-top:0}
.quiz-page .quiz-feedback{border-left:0;border-radius:14px;box-shadow:inset 4px 0 0 var(--cyan)}
.quiz-page .quiz-feedback.ok{box-shadow:inset 4px 0 0 #2f9e44}
.quiz-page .quiz-feedback.no{box-shadow:inset 4px 0 0 #d9480f}
.quiz-page .quiz-card .button{border-radius:99px;box-shadow:0 8px 18px -8px rgba(6,40,61,.6)}
.quiz-page .quiz-card .button-primary{box-shadow:0 8px 18px -8px rgba(6,40,61,.6)}
.quiz-page .quiz-result .big-score{background:linear-gradient(120deg,var(--blue),var(--cyan));-webkit-background-clip:text;background-clip:text;color:transparent}
.quiz-page .quiz-result .big-score small{color:var(--ink);-webkit-text-fill-color:var(--ink);opacity:.5}
.quiz-page .quiz-review li{border-left:0;border-radius:10px;box-shadow:inset 3px 0 0 var(--line)}
.quiz-page .quiz-review li.ok{box-shadow:inset 3px 0 0 #2f9e44}
.quiz-page .quiz-review li.no{box-shadow:inset 3px 0 0 #d9480f}

/* menu mobile */
.nav-toggle{display:none;width:44px;height:44px;padding:0;border:1px solid var(--line);border-radius:12px;background:#fff;cursor:pointer;flex-direction:column;gap:5px;align-items:center;justify-content:center}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s,opacity .2s}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(max-width:850px){
  .nav-toggle{display:flex;margin-left:auto}
  .site-header .header-cta{display:none}
  .main-nav{position:absolute;top:100%;left:0;right:0;flex-direction:column;gap:0;padding:8px 20px 16px;background:rgba(245,248,246,.98);backdrop-filter:blur(16px);border-bottom:1px solid var(--line);box-shadow:0 20px 30px -20px rgba(6,40,61,.35)}
  .main-nav.open{display:flex}
  .main-nav a{padding:14px 4px;font-size:16px;border-bottom:1px solid var(--line)}
  .main-nav a.nav-quiz{margin-top:12px;border-bottom:0;text-align:center;padding:12px 14px}
}

/* diagrama de refrigeração: empilhado no mobile, sem posições fixas em px */
@media(max-width:850px){
  .cooling-section{overflow:hidden}
  .cooling-heading>*{min-width:0}
  .cooling-heading h2{overflow-wrap:break-word}
  .cooling-diagram{height:auto;display:flex;flex-direction:column;padding:20px}
  .cooling-diagram .cooling-rack,.cooling-diagram .cooling-caption{position:static;width:100%;max-width:none}
  .cooling-diagram .cooling-tank{position:relative;left:auto;top:auto;width:100%;max-width:none}
  .cooling-diagram .cooling-tank{height:120px;flex:none;background:#fff}
  .cooling-diagram .tank-level{inset:48px 0 0}
  .cooling-diagram .tank-label{top:14px;left:16px;line-height:1.3}
  .cooling-diagram .cooling-rack{height:auto}
  .cooling-diagram .cooling-caption{margin-top:20px}
  .cooling-diagram .pipe{position:relative;left:auto;top:auto;width:auto;height:auto;transform:none;background:none;border-left:2px solid var(--cyan);margin-left:28px;padding:12px 0 12px 20px}
  .cooling-diagram .pipe-b,.cooling-diagram .pipe-c{border-left-color:var(--orange)}
  .cooling-diagram .pipe i{right:auto;left:-6px;top:50%;margin-top:-4px}
  .cooling-diagram .pipe span{position:static;display:block;white-space:normal}
}

/* cartões de alerta no mobile: número, ícone e título na mesma linha */
@media(max-width:850px){
  .risk-card{min-height:0;padding:22px 20px;display:grid;grid-template-columns:auto auto 1fr;align-items:center;column-gap:14px;row-gap:0}
  .risk-card .risk-number{order:1;font-size:13px;padding:4px 8px;border:1px solid currentColor;border-radius:99px}
  .risk-card .risk-icon{order:2;margin:0;width:44px;height:44px;display:grid;place-items:center;font-size:24px;border-radius:12px;background:rgba(7,89,133,.12)}
  .risk-card-dark .risk-icon{background:rgba(255,128,94,.16)}
  .risk-card h3{order:3;font-size:22px;line-height:1.15;margin:0}
  .risk-card p{order:4;grid-column:1/-1;max-width:none;margin:16px 0 18px;font-size:16px}
  .risk-card a{order:5;grid-column:1/-1;justify-self:start}
}

/* lista de fontes no mobile: número compacto */
@media(max-width:850px){
  .sources-list{padding-top:40px}
  .sources-list li{grid-template-columns:28px 1fr;gap:12px;padding:20px 0}
  .sources-list strong{font-size:19px;line-height:1.2}
}

/* títulos menores no mobile */
@media(max-width:850px){
  h2{font-size:2.4rem;line-height:1;margin:14px 0}
  .cooling-heading{gap:8px;margin-bottom:40px}
  .cooling-heading h2{margin:8px 0 0}
  .cooling-heading p{margin:0}
}