:root{--navy:#071735;--blue:#0b1f4d;--royal:#2454d6;--cyan:#52d2ff;--text:#152033;--muted:#64748b;--line:#e2e8f0;--bg:#f7f9fc;--ok:#0f9f6e;--bad:#c2410c}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text)}.hero{background:radial-gradient(circle at 78% 20%,rgba(82,210,255,.28),transparent 24%),linear-gradient(135deg,var(--navy),var(--blue));color:white;padding:24px clamp(18px,4vw,56px) 70px}nav{display:flex;justify-content:space-between;align-items:center;max-width:1120px;margin:auto}nav a{color:#dbeafe;text-decoration:none}.hero-grid{max-width:1120px;margin:70px auto 0;display:grid;grid-template-columns:1.5fr .8fr;gap:34px;align-items:center}.kicker{text-transform:uppercase;letter-spacing:.16em;font-size:12px;font-weight:800;color:var(--cyan);margin:0 0 12px}h1{font-size:clamp(38px,7vw,72px);line-height:.96;margin:0 0 20px}h2{font-size:clamp(28px,4vw,44px);margin:0 0 22px}h3{margin:0 0 12px}.lead{font-size:20px;line-height:1.55;color:#dbeafe;max-width:760px}.btn,button{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:999px;padding:14px 20px;background:var(--royal);color:white;text-decoration:none;font-weight:800;cursor:pointer}.ghost{background:transparent;color:inherit;border:1px solid rgba(255,255,255,.35)}.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.card,.notice,.quiz-card{background:white;border:1px solid var(--line);border-radius:28px;box-shadow:0 24px 60px rgba(15,23,42,.08)}.summary{padding:26px;color:var(--text)}.summary span{color:var(--muted);font-weight:700}.summary strong{display:block;font-size:30px;line-height:1.05;margin:10px 0}main{max-width:1120px;margin:-36px auto 0;padding:0 18px 60px}.notice{padding:18px 22px;margin-bottom:56px}.section{margin:64px 0}.modules{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.module{padding:22px;border-radius:24px;background:white;border:1px solid var(--line)}.module b{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;background:#eaf0ff;color:var(--royal);margin-bottom:16px}.module p{color:var(--muted);line-height:1.55}.split{display:grid;grid-template-columns:1.2fr .8fr;gap:18px;align-items:stretch}.split .card{padding:26px}.timeline{display:grid;gap:12px}.timeline div{padding:22px;background:white;border-left:5px solid var(--royal);border-radius:18px;border:1px solid var(--line)}time{font-weight:900;color:var(--royal)}.quiz-card{padding:26px}.progress{height:10px;background:#e5e7eb;border-radius:99px;overflow:hidden;margin-bottom:18px}.progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--royal),var(--cyan));transition:.25s}.answers{display:grid;gap:10px;margin:20px 0}.answer{border:1px solid var(--line);background:#fff;color:var(--text);justify-content:flex-start;text-align:left;border-radius:18px}.answer.correct{border-color:rgba(15,159,110,.4);background:#ecfdf5;color:#064e3b}.answer.wrong{border-color:rgba(194,65,12,.4);background:#fff7ed;color:#7c2d12}.explanation{border-radius:20px;padding:18px;background:#eff6ff;color:#1e3a8a;line-height:1.55}.hidden{display:none}.quiz-actions{display:flex;gap:10px}.quiz-actions .ghost{color:var(--royal);border-color:#bfdbfe}.sources ul{color:var(--muted);line-height:1.8}footer{text-align:center;color:var(--muted);padding:28px}@media(max-width:800px){.hero-grid,.split{grid-template-columns:1fr}.modules{grid-template-columns:1fr}.hero{padding-bottom:54px}main{margin-top:-24px}nav{align-items:flex-start}.lead{font-size:17px}}

.presentation{position:fixed;inset:0;z-index:50;background:radial-gradient(circle at 80% 20%,rgba(82,210,255,.22),transparent 28%),linear-gradient(135deg,#061226,#0b1f4d 62%,#101828);color:white;padding:clamp(18px,4vw,52px);display:grid;place-items:center}.presentation.hidden{display:none}.presentation-shell{width:min(1180px,100%);min-height:min(760px,88vh);display:flex;flex-direction:column;justify-content:center}.presentation-close{position:absolute;top:22px;right:22px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);padding:10px 14px}.presentation-meta{color:#93c5fd;font-weight:900;letter-spacing:.14em;text-transform:uppercase}.presentation h2{font-size:clamp(36px,6vw,76px);line-height:1.02;margin:0 0 34px;max-width:1050px}.presentation-answers{display:grid;grid-template-columns:1fr 1fr;gap:18px}.presentation-answer{border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.08);color:white;border-radius:26px;padding:24px;text-align:left;font-size:clamp(18px,2.3vw,28px);line-height:1.25}.presentation-answer.correct{background:rgba(15,159,110,.28);border-color:#34d399}.presentation-answer.dim{opacity:.42}.presentation-explanation{margin-top:26px;padding:24px;border-radius:26px;background:rgba(219,234,254,.96);color:#1e3a8a;font-size:clamp(18px,2vw,26px);line-height:1.42}.presentation-controls{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}.presentation-controls button{font-size:18px}.presentation-help{color:#bfdbfe;margin-top:18px}@media(max-width:800px){.presentation-answers{grid-template-columns:1fr}.presentation h2{font-size:34px}.presentation-shell{justify-content:flex-start;padding-top:52px}}
.visual-card{overflow:hidden}.visual-card img{width:100%;border-radius:20px;margin-bottom:18px;display:block}.visual-section{display:grid;grid-template-columns:.85fr 1.15fr;gap:22px;align-items:center;background:white;border:1px solid var(--line);border-radius:30px;padding:24px;box-shadow:0 24px 60px rgba(15,23,42,.08)}.visual-section p{color:var(--muted);line-height:1.6;font-size:18px}.visual-section img{width:100%;border-radius:24px;display:block}.module:nth-child(n+9){background:linear-gradient(180deg,#fff,#f8fbff);border-color:#bfdbfe}.module:nth-child(n+9) b{background:#dbeafe}@media(max-width:800px){.visual-section{grid-template-columns:1fr}}