:root{--bg-primary:#111827;--bg-secondary:#1F2937;--text-primary:#F9FAFB;--text-secondary:#9CA3AF;--text-muted:#6B7280;--blue:#3B82F6;--amber:#F59E0B;--green:#10B981;--purple:#8B5CF6;--red:#EF4444;--border:rgba(255,255,255,.08);--grad:linear-gradient(135deg,var(--blue),var(--amber) 25%,var(--green) 50%,var(--purple) 75%,var(--red))}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:Montserrat,-apple-system,BlinkMacSystemFont,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden;font-weight:400}a{color:inherit}.wrap{max-width:780px;margin:0 auto;padding:0 24px}.logo{font-weight:900;letter-spacing:-.04em;text-decoration:none;display:inline-block}.logo .dot{display:inline-block;width:.2em;height:.2em;background:var(--grad);border-radius:50%;margin:0 .03em;vertical-align:.62em}header.top{display:flex;align-items:center;justify-content:space-between;padding:28px 0;border-bottom:1px solid var(--border)}header.top .logo{font-size:24px}header.top nav a{color:var(--text-secondary);text-decoration:none;font-size:12px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;margin-left:22px;transition:color .2s}header.top nav a:hover{color:var(--text-primary)}.hero{position:relative;padding:70px 0 10px}.hero:before{content:"";position:absolute;top:-40px;left:50%;transform:translate(-50%);width:560px;height:360px;background:var(--grad);filter:blur(150px);opacity:.14;border-radius:50%;z-index:0;pointer-events:none}.hero>*{position:relative;z-index:1}.kicker{display:inline-flex;align-items:center;gap:10px;font-size:12px;font-weight:600;letter-spacing:.3em;text-transform:uppercase;color:var(--text-secondary);padding:7px 16px;border:1px solid var(--border);border-radius:999px;background:#ffffff08;margin-bottom:26px}.kicker .pulse{width:7px;height:7px;border-radius:50%;background:var(--green);animation:pulse 2s infinite}@keyframes pulse{0%{box-shadow:0 0 #10b98180}70%{box-shadow:0 0 0 8px #10b98100}to{box-shadow:0 0 #10b98100}}.tag{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;padding:5px 12px;border-radius:999px;margin-bottom:24px;text-decoration:none}.tag.fisica{color:var(--blue);background:#3b82f61f}.tag.quimica{color:var(--green);background:#10b9811f}.tag.matematicas{color:var(--amber);background:#f59e0b1f}.tag.biologia{color:var(--red);background:#ef44441f}.tag.botanica,.tag.astronomia{color:var(--purple);background:#8b5cf61f}h1.q{font-weight:900;font-size:clamp(34px,6.5vw,60px);line-height:1.02;letter-spacing:-.04em;margin-bottom:24px}.article{font-size:18px}.article p{margin-bottom:20px}.article p:first-of-type{font-size:20px;font-weight:500;color:var(--text-primary)}.article strong{color:var(--blue);font-weight:700}.article em{font-style:italic;color:var(--text-primary)}.article blockquote{position:relative;margin:32px 0;padding:28px 30px;border-radius:18px;background:var(--bg-secondary);border:1px solid var(--border);overflow:hidden;font-size:20px;font-weight:800;letter-spacing:-.01em;line-height:1.3}.article blockquote:before{content:"";position:absolute;top:0;left:0;bottom:0;width:4px;background:var(--grad)}.article blockquote p{margin:0}.article blockquote strong{color:var(--text-primary)}.sources{margin-top:30px;padding-top:18px;border-top:1px solid var(--border);font-size:13px;color:var(--text-muted)}.sources b{color:var(--green);font-weight:700}.backlink{display:inline-block;margin:34px 0 10px;font-size:13px;font-weight:600;color:var(--text-secondary);text-decoration:none}.backlink:hover{color:var(--text-primary)}.capture{margin:70px 0;padding:46px 36px;border:1px solid var(--border);border-radius:24px;background:linear-gradient(135deg,#3b82f60f,#8b5cf60f,#ef44440d);text-align:center}.capture h3{font-weight:900;font-size:clamp(26px,4vw,34px);letter-spacing:-.03em;margin-bottom:10px}.capture .sub{color:var(--text-secondary);max-width:460px;margin:0 auto 26px}.form{display:flex;gap:10px;max-width:440px;margin:0 auto;flex-wrap:wrap;justify-content:center}.form input{flex:1;min-width:210px;background:var(--bg-primary);border:1px solid var(--border);color:var(--text-primary);padding:15px 16px;border-radius:12px;font-family:inherit;font-size:15px}.form input:focus{outline:none;border-color:var(--blue)}.form button{background:var(--blue);color:#fff;border:none;padding:15px 26px;border-radius:12px;font-family:inherit;font-weight:700;font-size:15px;cursor:pointer;transition:transform .15s,filter .15s}.form button:hover{transform:translateY(-2px);filter:brightness(1.1)}.micro{font-size:12px;color:var(--text-muted);margin-top:16px;font-weight:500}.section-label{font-size:12px;font-weight:600;letter-spacing:.3em;text-transform:uppercase;color:var(--text-muted);text-align:center;margin:0 0 28px}.grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:80px}.card{display:block;border:1px solid var(--border);border-radius:20px;padding:26px;background:var(--bg-secondary);transition:transform .18s,border-color .18s;text-decoration:none;color:inherit}.card:hover{transform:translateY(-5px);border-color:#ffffff2e}.card h4{font-weight:800;font-size:22px;line-height:1.15;letter-spacing:-.02em;margin-bottom:10px}.card p{font-size:14px;color:var(--text-secondary)}.card .more{display:inline-block;margin-top:14px;font-size:13px;font-weight:600;color:var(--blue)}footer{border-top:1px solid var(--border);padding:46px 0 70px;text-align:center}footer .logo{font-size:22px;margin-bottom:14px}footer p{color:var(--text-secondary);font-size:14px;max-width:500px;margin:0 auto 6px}footer .verify{margin-top:18px;font-size:12px;color:var(--text-muted);font-weight:500}footer .verify b{color:var(--green);font-weight:700}footer .tagline{margin-top:22px;font-weight:300;font-style:italic;color:var(--text-secondary)}@media (max-width:600px){.grid{grid-template-columns:1fr}header.top nav a:first-child{display:none}}