:root{--bg:#f7f8fb;--text:#202431;--muted:#5e6778;--brand:#1d4ed8;--accent:#f97316;--card:#fff;--line:#e4e8f0}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.65}a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:1120px;margin:0 auto;padding:0 22px}.site-header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px}.logo{font-weight:800;font-size:1.25rem;color:var(--text)}.menu{display:flex;gap:22px;align-items:center;list-style:none;margin:0;padding:0}.menu a{color:var(--text);font-weight:650}.dropdown{position:relative}.submenu{display:none;position:absolute;top:100%;left:0;background:#fff;border:1px solid var(--line);box-shadow:0 18px 45px rgba(22,31,56,.12);border-radius:14px;padding:10px;min-width:220px;list-style:none;margin:0}.dropdown:hover .submenu{display:block}.submenu li a{display:block;padding:8px 10px}.hero{padding:86px 0;background:linear-gradient(120deg,#eaf1ff,#fff 45%,#fff4e8)}.hero h1{font-size:clamp(2.4rem,6vw,5rem);line-height:1.02;margin:0 0 18px;letter-spacing:-.05em}.hero p{font-size:1.25rem;color:var(--muted);max-width:780px}.btn{display:inline-block;background:var(--brand);color:white;border-radius:999px;padding:12px 20px;font-weight:750;margin-top:16px}.btn.secondary{background:var(--accent)}section{padding:64px 0}.section-title{font-size:2.2rem;letter-spacing:-.03em;margin:0 0 12px}.lead{color:var(--muted);font-size:1.08rem;max-width:760px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.grid.two{grid-template-columns:repeat(2,1fr)}.card{background:var(--card);border:1px solid var(--line);border-radius:24px;overflow:hidden;box-shadow:0 14px 36px rgba(22,31,56,.08)}.card-body{padding:24px}.card h3,.card h2{line-height:1.15;margin:0 0 12px}.card p{color:var(--muted);margin:0 0 12px}.card img{width:100%;height:260px;object-fit:cover;display:block}.book img{height:440px;object-fit:contain;background:#f0f3f8}.page-hero{padding:56px 0;background:#fff;border-bottom:1px solid var(--line)}.page-hero h1{font-size:3rem;margin:0;letter-spacing:-.04em}.content{max-width:880px;background:#fff;border:1px solid var(--line);border-radius:24px;padding:36px;margin:40px auto}.content h2{margin-top:28px}.form{display:grid;gap:14px}.form input,.form textarea{width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:12px;font:inherit}.form textarea{min-height:150px}.footer{border-top:1px solid var(--line);background:#fff;padding:34px 0;color:var(--muted);text-align:center}@media(max-width:820px){.nav{align-items:flex-start;flex-direction:column;padding:18px 0}.menu{flex-wrap:wrap}.grid,.grid.two{grid-template-columns:1fr}.hero{padding:56px 0}.card img{height:220px}.book img{height:360px}.page-hero h1{font-size:2.2rem}}


/* Mejoras visuales */
body{background:radial-gradient(circle at top left,#eef5ff 0,#f7f8fb 32%,#fbfbfd 100%)}
.site-header{box-shadow:0 8px 28px rgba(20,28,45,.06)}
.logo::after{content:"";display:inline-block;width:8px;height:8px;margin-left:8px;border-radius:50%;background:var(--accent);vertical-align:middle}
.menu a{border-radius:999px;padding:8px 12px;transition:.18s ease}
.menu a:hover{background:#eef4ff;text-decoration:none;color:var(--brand)}
.hero,.page-hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#0f172a 0%,#1d4ed8 54%,#f97316 140%);color:#fff;border-bottom:0}
.hero:before,.page-hero:before{content:"";position:absolute;inset:auto -80px -120px auto;width:360px;height:360px;border-radius:50%;background:rgba(255,255,255,.16)}
.hero p,.page-hero p{color:rgba(255,255,255,.86)}
.page-hero .container,.hero .container{position:relative;z-index:1}
.btn,.button,.project-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:linear-gradient(135deg,var(--brand),#153eaa);color:#fff!important;border-radius:999px;padding:12px 18px;font-weight:800;box-shadow:0 12px 24px rgba(29,78,216,.22);transition:transform .18s ease,box-shadow .18s ease;text-decoration:none!important}
.btn:hover,.button:hover,.project-button:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(29,78,216,.28);text-decoration:none!important}
.btn.secondary{background:linear-gradient(135deg,var(--accent),#ea580c);box-shadow:0 12px 24px rgba(249,115,22,.24)}
.card{transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.card:hover{transform:translateY(-4px);box-shadow:0 22px 50px rgba(22,31,56,.13);border-color:#d5ddeb}.card .card-body a:not(.btn):not(.project-button){font-weight:800}
.content{box-shadow:0 18px 55px rgba(22,31,56,.08)}
.projects-intro{font-size:1.08rem;color:var(--muted);max-width:760px;margin:0 auto 28px;text-align:center}.project-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:28px}.project-card{background:#fff;border:1px solid var(--line);border-radius:28px;padding:28px;box-shadow:0 16px 42px rgba(22,31,56,.08);position:relative;overflow:hidden;transition:.18s ease}.project-card:before{content:"";position:absolute;top:0;left:0;right:0;height:5px;background:linear-gradient(90deg,var(--brand),var(--accent))}.project-card:hover{transform:translateY(-4px);box-shadow:0 24px 60px rgba(22,31,56,.13)}.project-card h2{margin:0 0 10px;font-size:1.55rem;letter-spacing:-.02em}.project-card p{color:var(--muted);margin:0 0 20px}.project-meta{display:inline-flex;margin-bottom:14px;padding:5px 10px;border-radius:999px;background:#eef4ff;color:#1d4ed8;font-size:.82rem;font-weight:800;text-transform:uppercase;letter-spacing:.04em}.project-button:after{content:"↗";font-size:1rem}.content.projects{max-width:1040px;background:transparent;border:0;box-shadow:none;padding:0;margin:46px auto 64px}.content.projects>p:first-child{font-size:1.08rem;color:var(--muted);text-align:center;margin:0 auto 24px;max-width:760px}.content.projects h2 a{color:var(--text)}
@media(max-width:820px){.project-grid{grid-template-columns:1fr}.content.projects{padding:0 22px}.menu a{padding:6px 8px}}