:root{--ink:#1A1A1A;--text:#333;--muted:#5E5E5E;--line:#E4E4E4;--bg:#F5F5F5;--blue:#1E90FF;--orange:#FF6B35;--gray:#A9A9A9}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Inter',-apple-system,'Segoe UI',sans-serif;color:var(--ink);background:var(--bg);line-height:1.6}
a{color:inherit}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px;border-radius:4px}
header{background:#fff;border-bottom:1px solid var(--line)}
.bar{max-width:1152px;margin:0 auto;padding:18px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-size:24px;font-weight:600;letter-spacing:-.5px}
nav{display:flex;align-items:center;gap:28px;font-size:15px;font-weight:500}
nav a{text-decoration:none}
.btn{display:inline-block;background:var(--ink);color:#fff;text-decoration:none;font-weight:600;font-size:15px;padding:12px 20px;border-radius:8px;border:0;cursor:pointer}
.btn:hover{background:#000}
.btn.or{background:var(--orange);color:var(--ink);font-weight:700}
.btn.or:hover{background:#ff7d4d}
main{max-width:1152px;margin:0 auto;padding:0 24px}
.hero{padding:56px 0 36px}
.hero h1{font-size:clamp(34px,5vw,52px);line-height:1.1;letter-spacing:-1.5px;font-weight:700;max-width:780px}
.hero p{font-size:18px;color:#555;max-width:620px;margin-top:14px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.ad{background:#fff;border:1px solid #E0E0E0;border-radius:12px;overflow:hidden;display:flex;flex-direction:column}
.ad-top{padding:16px;display:flex;align-items:center;gap:10px}
.ad-top b{display:block;font-size:14px;font-weight:600;line-height:1.3}
.ad-top small{font-size:12px;color:var(--muted)}
.ad-copy{padding:0 16px 14px;font-size:15px;line-height:1.5}
.ad-img{height:240px;display:flex;align-items:center;justify-content:center}
.ad-foot{background:#F0F0F0;padding:14px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto}
.ad-foot small{display:block;font-size:12px;color:var(--muted);letter-spacing:.5px}
.ad-foot strong{font-size:16px;line-height:1.3;display:block}
.ad-foot .btn{flex:none;padding:10px 16px;font-size:14px}
.react{padding:12px 16px;display:flex;gap:24px;font-size:13px;color:var(--muted);font-weight:500}
.band{background:var(--ink);border-radius:12px;padding:32px 40px;margin:44px 0;display:flex;align-items:center;justify-content:space-between;gap:28px}
.band small{color:#CFCFCF;font-size:12px;font-weight:600;letter-spacing:1px}
.band h2{color:#fff;font-size:26px;letter-spacing:-.5px;font-weight:600;margin:4px 0}
.band p{color:#CFCFCF;font-size:15px}
/* artículo */
.art{max-width:720px;margin:0 auto;padding:40px 0 24px}
.back{font-size:14px;font-weight:500;color:var(--muted);text-decoration:none}
.tags{margin:24px 0 16px;display:flex;gap:8px}
.tag{font-size:12px;font-weight:600;padding:5px 12px;border-radius:20px}
.t1{background:#EAF3FF;color:#0B5CB5}.t2{background:#FFF0EA;color:#A33E12}
.art h1{font-size:clamp(32px,5vw,44px);line-height:1.12;letter-spacing:-1.4px;font-weight:700}
.lead{font-size:20px;color:#555;margin:16px 0 20px;line-height:1.5}
.by{display:flex;align-items:center;gap:12px;padding:12px 0 18px;border-bottom:1px solid var(--line);margin-bottom:28px}
.by b{font-size:15px;display:block;line-height:1.3}.by small{font-size:13px;color:var(--muted)}
.art p.b{font-size:18px;line-height:1.75;color:var(--text);margin-bottom:20px}
.art sup a{color:#0B5CB5;font-weight:600;text-decoration:none;padding:0 1px}
.quote{border-left:4px solid var(--orange);padding:6px 0 6px 22px;margin:28px 0;font-size:22px;line-height:1.4;font-weight:600;letter-spacing:-.4px}
.src{margin-top:32px;padding:20px 22px;background:#fff;border:1px solid var(--line);border-radius:12px}
.src h2{font-size:15px;font-weight:600;margin-bottom:10px}
.src ol{padding-left:20px;font-size:14px;color:#444}
.src li{margin-bottom:8px;word-break:break-word}
.src a{color:#0B5CB5}
.src p{font-size:13px;color:var(--muted);margin-top:10px}
.cta{margin-top:28px;background:#F0F0F0;border-radius:12px;padding:24px 26px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.cta small{font-size:12px;color:var(--muted);letter-spacing:.5px}
.cta h2{font-size:20px;font-weight:600;line-height:1.3}
.cta p{font-size:15px;color:#555}
.more{margin-top:40px}
.more h2{font-size:18px;font-weight:600;margin-bottom:14px}
.more a{display:block;padding:14px 0;border-top:1px solid var(--line);font-weight:600;text-decoration:none}
.more small{display:block;color:var(--muted);font-weight:400;font-size:12px}
footer{background:#fff;border-top:1px solid var(--line);margin-top:48px}
.foot{max-width:1152px;margin:0 auto;padding:24px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:14px;color:var(--muted)}
.foot a{color:var(--ink);font-weight:600}
@media(max-width:900px){.grid{grid-template-columns:1fr}.band,.cta{flex-direction:column;align-items:flex-start}nav a:not(.btn){display:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}