:root{--ink:#0b1930;--navy:#0d2242;--blue:#1e4f91;--cyan:#1fb6b2;--paper:#f5f8fb;--white:#fff;--muted:#607089;--line:#dbe4ee;--soft:#eaf3f7;--shadow:0 18px 60px rgba(11,25,48,.1);--max:920px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,"Segoe UI",Arial,sans-serif;line-height:1.7}a{color:inherit}button,input,textarea,select{font:inherit}.container{width:min(calc(100% - 36px),var(--max));margin:auto}.topbar{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}.topbar-inner{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;text-decoration:none}.brand-logo{display:block;width:62px;height:62px;object-fit:contain}.back{color:var(--blue);font-weight:800;text-decoration:none;font-size:.88rem}.resource-hero{padding:82px 0 64px;background:linear-gradient(135deg,#071429,#12365f);color:#fff}.eyebrow{color:#7be4df;font-size:.76rem;font-weight:900;letter-spacing:.13em;text-transform:uppercase}.resource-hero h1{max-width:820px;margin:14px 0 20px;font-size:clamp(2.35rem,6vw,4.6rem);line-height:1.05;letter-spacing:-.045em}.resource-hero p{max-width:720px;margin:0;color:rgba(255,255,255,.7);font-size:1.08rem}.resource-main{padding:64px 0 90px}.lead-card,.content-card,.worksheet{padding:32px;border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:0 10px 35px rgba(11,25,48,.05);margin-bottom:24px}.lead-card{border-left:5px solid var(--cyan)}h2{margin:0 0 15px;font-size:clamp(1.6rem,3vw,2.2rem);line-height:1.2}h3{margin:28px 0 8px;font-size:1.15rem}p{margin:0 0 16px;color:#40526a}ul,ol{color:#40526a;padding-left:22px}.checklist{display:grid;gap:12px;padding:0;list-style:none}.checklist li{position:relative;padding:15px 16px 15px 48px;border-radius:14px;background:var(--soft)}.checklist li:before{content:"✓";position:absolute;left:16px;top:15px;width:23px;height:23px;border-radius:50%;display:grid;place-items:center;background:var(--cyan);color:#06252c;font-weight:900}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:18px}.mini-card{padding:21px;border:1px solid var(--line);border-radius:16px;background:#fff}.mini-card h3{margin-top:0}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;min-width:620px}th,td{padding:15px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}th{background:var(--soft);font-size:.8rem;text-transform:uppercase;letter-spacing:.05em}td{color:#40526a}.callout{padding:22px;border-radius:17px;background:var(--navy);color:#fff}.callout p{color:rgba(255,255,255,.72);margin:0}.worksheet label{display:block;margin-bottom:7px;font-size:.8rem;font-weight:800}.worksheet input,.worksheet textarea,.worksheet select{width:100%;padding:12px 13px;border:1px solid var(--line);border-radius:10px;background:#fbfdff;color:var(--ink)}.worksheet textarea{min-height:90px;resize:vertical}.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.field{margin-bottom:17px}.full{grid-column:1/-1}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:11px 18px;border:0;border-radius:11px;background:var(--cyan);color:#06252c;font-weight:900;text-decoration:none;cursor:pointer}.btn.secondary{background:var(--navy);color:#fff}.resource-footer{padding:34px 0;background:#071326;color:rgba(255,255,255,.58);font-size:.82rem}.resource-footer a{color:#fff}.note{font-size:.8rem;color:var(--muted)}
.whatsapp{position:fixed;right:20px;bottom:20px;z-index:50;display:grid;width:54px;height:54px;place-items:center;border-radius:50%;background:#25d366;color:#fff;box-shadow:0 14px 35px rgba(0,0,0,.24);transition:transform .2s ease,box-shadow .2s ease}.whatsapp:hover{transform:translateY(-3px);box-shadow:0 18px 40px rgba(0,0,0,.3)}.whatsapp:focus-visible{outline:3px solid #fff;outline-offset:3px}.whatsapp svg{width:25px;height:25px}
.back-to-top{position:fixed;right:24px;bottom:86px;z-index:50;display:grid;width:46px;height:46px;place-items:center;border:1px solid rgba(255,255,255,.24);border-radius:50%;background:var(--navy);color:#fff;text-decoration:none;box-shadow:0 12px 30px rgba(0,0,0,.2);transition:transform .2s ease,background-color .2s ease}.back-to-top:hover{transform:translateY(-3px);background:var(--blue)}.back-to-top:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}.back-to-top svg{width:21px;height:21px}
@media(max-width:680px){.resource-hero{padding:58px 0 46px}.resource-main{padding:40px 0 65px}.lead-card,.content-card,.worksheet{padding:23px}.grid-2,.field-grid{grid-template-columns:1fr}.full{grid-column:auto}.topbar-inner{min-height:64px}.back{font-size:0}.back:after{content:"← Volver";font-size:.86rem}}
@media print{.topbar,.actions,.resource-footer,.whatsapp,.back-to-top{display:none}.resource-hero{padding:24px 0;background:#fff;color:#000}.resource-hero p{color:#333}.eyebrow{color:#000}.resource-main{padding:24px 0}.content-card,.lead-card,.worksheet{box-shadow:none;break-inside:avoid}body{background:#fff}}