:root {
  --bg: #07151c;
  --panel: #0c2029;
  --panel2: #102c37;
  --ink: #e8f3f5;
  --muted: #9cb4bd;
  --line: #204653;
  --accent: #67d5d1;
  --accent2: #f2bf62;
  --danger: #f47f72;
  --ok: #8de09b;
  --shadow: 0 12px 40px rgba(0,0,0,.28);
  --radius: 18px;
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;background:radial-gradient(circle at 20% 0%,#0e2f39 0,#07151c 35%,#041015 100%);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
button,input,textarea{font:inherit}
button{cursor:pointer}
.app-shell{min-height:100vh;padding:18px}
.frame{max-width:980px;margin:0 auto}
.topbar{position:sticky;top:0;z-index:10;background:rgba(7,21,28,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);padding:12px 0 10px;margin-bottom:18px}
.brand-row{display:flex;justify-content:space-between;gap:14px;align-items:center}
.brand{font-weight:800;letter-spacing:.08em;text-transform:uppercase;font-size:.88rem;color:var(--accent)}
.signal{font-size:.78rem;color:var(--muted)}
.progress{height:8px;background:#061117;border:1px solid var(--line);border-radius:999px;overflow:hidden;margin-top:10px}
.progress>span{display:block;height:100%;background:linear-gradient(90deg,var(--accent),var(--accent2));width:0;transition:width .35s ease}
.panel{background:linear-gradient(180deg,rgba(16,44,55,.96),rgba(9,29,37,.96));border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:26px;margin-bottom:16px}
.kicker{font-size:.8rem;text-transform:uppercase;letter-spacing:.12em;color:var(--accent);font-weight:800}
h1,h2,h3{margin:.4rem 0 1rem;line-height:1.15}
h1{font-size:clamp(2rem,6vw,4rem)}h2{font-size:clamp(1.5rem,4vw,2.25rem)}h3{font-size:1.15rem}
p{line-height:1.6;color:#d8e7eb}
.lead{font-size:1.15rem;color:#f2f7f8}
.muted{color:var(--muted)}
.grid{display:grid;gap:14px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}
.card{background:#0b1d25;border:1px solid var(--line);border-radius:14px;padding:16px}
.card strong{color:#fff}
.card.selected{outline:2px solid var(--accent);background:#12333d}
.card.correct{border-color:var(--ok);background:rgba(80,150,90,.14)}
.card.wrong{border-color:var(--danger);background:rgba(160,70,60,.12)}
.choice{width:100%;text-align:left;background:#0a1a21;border:1px solid var(--line);color:var(--ink);padding:14px 16px;border-radius:13px;margin:8px 0;transition:.15s ease}
.choice:hover,.choice:focus{border-color:var(--accent);transform:translateY(-1px)}
.choice[disabled]{cursor:default;opacity:.85;transform:none}
.choice.good{border-color:var(--ok)}.choice.bad{border-color:var(--danger)}
.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.btn{border:0;border-radius:12px;padding:12px 16px;font-weight:800;background:var(--accent);color:#052126}
.btn.secondary{background:#173640;color:var(--ink);border:1px solid var(--line)}
.btn.warn{background:var(--accent2);color:#2c210d}
.btn.ghost{background:transparent;border:1px solid var(--line);color:var(--muted)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.feedback{margin-top:14px;padding:14px 16px;border-radius:12px;background:#07171e;border-left:4px solid var(--accent2)}
.feedback.ok{border-left-color:var(--ok)}.feedback.bad{border-left-color:var(--danger)}
.statusbar{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:0 0 16px}
.stat{background:#081a21;border:1px solid var(--line);border-radius:12px;padding:10px 12px}.stat b{display:block;font-size:1.15rem}.stat span{font-size:.74rem;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
.hyp-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.hyp{padding:14px;border-radius:13px;background:#0b1d25;border:1px solid var(--line)}.hyp b{display:block;margin-bottom:6px;color:var(--accent2)}
.timeline{display:grid;gap:8px;margin-top:14px}.time-row{display:flex;gap:12px;align-items:flex-start;background:#0a1a21;border:1px solid var(--line);padding:12px;border-radius:12px}.time{min-width:64px;font-weight:900;color:var(--accent2)}
.voltage{display:flex;gap:8px;align-items:end;height:180px;margin:18px 0}.bar{flex:1;background:linear-gradient(180deg,var(--accent),#285d69);border-radius:8px 8px 2px 2px;position:relative;min-width:42px}.bar span{position:absolute;left:50%;transform:translateX(-50%);bottom:calc(100% + 7px);font-size:.8rem}.bar em{position:absolute;left:50%;transform:translateX(-50%);bottom:6px;font-size:.68rem;font-style:normal;color:#041014;font-weight:800}
.lab{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.sample{background:#0a1a21;border:1px solid var(--line);border-radius:14px;padding:14px;text-align:center}.tube{height:110px;border:2px solid #6c8991;border-top:0;border-radius:0 0 18px 18px;margin:10px auto;width:58px;position:relative;overflow:hidden}.liquid{position:absolute;bottom:0;left:0;right:0;height:68%;background:linear-gradient(180deg,rgba(103,213,209,.55),rgba(103,213,209,.18))}.meter{height:14px;border-radius:999px;background:#061117;border:1px solid var(--line);overflow:hidden;margin-top:10px}.meter span{display:block;height:100%;background:linear-gradient(90deg,var(--accent),var(--accent2));width:0;transition:width .5s}
.map{display:grid;grid-template-columns:repeat(6,1fr);gap:4px;background:#07171e;padding:8px;border-radius:14px;border:1px solid var(--line)}.cell{aspect-ratio:1;border-radius:8px;background:#17323b;border:1px solid #244a55;display:grid;place-items:center;font-size:.7rem;color:#b9ccd1}.cell.high{background:#355348}.cell.low{background:#13384a}.cell.water{background:#0f6071}.cell.station{outline:3px solid var(--accent2);font-weight:900}.cell.pick{cursor:pointer}.cell.pick:hover{outline:2px solid var(--accent)}
.console{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;background:#020a0e;border:1px solid #1b414a;border-radius:14px;padding:16px;white-space:pre-wrap;color:#a9f2d0;line-height:1.55}
.multimeter{background:#d9b43c;color:#1a1605;border-radius:20px;padding:18px;max-width:360px;margin:18px auto;box-shadow:inset 0 0 0 5px #b4932c}.screen{background:#253333;color:#bfffc4;border-radius:8px;padding:18px;text-align:right;font-family:ui-monospace,monospace;font-size:2rem;border:4px solid #121b1b}.probe-row{display:flex;gap:10px;justify-content:center;margin-top:12px}.probe{padding:10px 14px;border-radius:999px;background:#222;color:#fff}.probe.red{background:#b8473e}
.chain{display:flex;flex-wrap:wrap;gap:8px;min-height:60px;padding:10px;border:1px dashed #3a6571;border-radius:14px}.chip{border:1px solid var(--line);background:#0a1a21;color:var(--ink);padding:10px 12px;border-radius:999px}.chip.active{border-color:var(--accent2);background:#3a2d15}.chip.used{opacity:.45}
.badge{display:inline-block;padding:6px 10px;border-radius:999px;background:#11333c;border:1px solid var(--line);font-size:.78rem;color:var(--accent)}
.separator{height:1px;background:var(--line);margin:20px 0}
.quote{font-size:1.25rem;padding:18px;border-left:4px solid var(--accent2);background:#091a21;border-radius:0 12px 12px 0}
.textarea{width:100%;min-height:120px;background:#07171e;border:1px solid var(--line);color:var(--ink);border-radius:12px;padding:14px;resize:vertical}
.input{width:100%;background:#07171e;border:1px solid var(--line);color:var(--ink);border-radius:12px;padding:12px}
.small{font-size:.86rem}.center{text-align:center}.hidden{display:none!important}
.dossier{background:#e9f1f2;color:#142228;border-radius:16px;padding:22px}.dossier h2,.dossier h3{color:#0b3038}.dossier p,.dossier li{color:#21363c}.dossier .mono{font-family:ui-monospace,monospace;white-space:pre-wrap}
@media(max-width:720px){.app-shell{padding:10px}.panel{padding:18px}.grid.two,.grid.three,.hyp-grid,.statusbar{grid-template-columns:1fr}.lab{grid-template-columns:1fr}.map{grid-template-columns:repeat(4,1fr)}.brand-row{align-items:flex-start;flex-direction:column}.voltage{height:150px}}

/* MARQUES PI ACADEMY — identidade institucional */
.academy-site-header{background:#fff;border-bottom:1px solid #dce3ed;color:#061b43}
.academy-site-header__in{width:min(1120px,calc(100% - 36px));min-height:78px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:24px}
.academy-site-brand{display:flex;align-items:center;gap:13px;text-decoration:none;color:#061b43}
.academy-site-brand img{width:42px;height:auto;display:block}
.academy-site-brand span{display:flex;align-items:baseline;gap:9px;letter-spacing:.08em}
.academy-site-brand strong{font-size:16px}.academy-site-brand b{font-size:12px;color:#16b84e;letter-spacing:.13em}
.academy-site-company{font-size:10px;letter-spacing:.2em;color:#738097}
.academy-site-footer{background:#061b43;color:#fff;border-top:1px solid rgba(255,255,255,.08)}
.academy-site-footer__in{width:min(1120px,calc(100% - 36px));min-height:110px;margin:0 auto;display:flex;align-items:center;justify-content:flex-start}
.academy-footer-left{display:flex;align-items:center;gap:14px;text-decoration:none;color:#fff}
.academy-footer-left img{width:48px;height:auto;display:block}
.academy-footer-left strong{display:block;color:#40d36f;font-size:19px;letter-spacing:.09em}
.academy-footer-left small{display:block;margin-top:6px;color:#9aa9bd;font-size:9px;letter-spacing:.08em;text-transform:none}
@media(max-width:720px){.academy-site-company{display:none}.academy-site-footer__in{padding:26px 0;align-items:flex-start}.academy-site-header__in{min-height:70px}}
.academy-head-right{display:flex;align-items:center;gap:18px}
.academy-lang{display:flex;align-items:center;gap:6px}
.academy-lang a{display:inline-flex;align-items:center;justify-content:center;min-width:34px;height:30px;padding:0 8px;border:1px solid #d7deea;border-radius:999px;color:#526078;text-decoration:none;font-size:10px;font-weight:800;letter-spacing:.12em;background:#fff}
.academy-lang a:hover{border-color:#16b84e;color:#061b43}
.academy-lang a.active{background:#061b43;border-color:#061b43;color:#fff}
@media(max-width:720px){.academy-head-right{gap:8px}.academy-lang a{min-width:32px;height:29px;padding:0 7px}}