:root{
  --navy:#0f2a44;
  --navy-2:#173a5c;
  --gold:#b8924a;
  --gold-2:#d3b072;
  --ink:#1c2733;
  --muted:#5b6876;
  --line:#e3e7ec;
  --bg:#ffffff;
  --bg-alt:#f5f3ee;
  --radius:14px;
  --shadow:0 10px 30px rgba(15,42,68,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{margin:0;font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;font-size:16px}
img{max-width:100%;display:block}
a{color:var(--navy-2)}
h1,h2,h3{font-family:"Playfair Display",Georgia,serif;color:var(--navy);line-height:1.2;margin:0 0 .5em}
h2{font-size:clamp(1.7rem,3.5vw,2.4rem)}
h3{font-size:1.15rem}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
.narrow{max-width:820px}
.skip{position:absolute;left:-999px}
.skip:focus{left:16px;top:16px;background:#fff;padding:8px 12px;z-index:99}

/* Botones */
.btn{display:inline-flex;align-items:center;gap:8px;justify-content:center;padding:14px 24px;border-radius:999px;font-weight:600;text-decoration:none;border:2px solid transparent;cursor:pointer;font-size:1rem;transition:.2s}
.btn-gold{background:var(--gold);color:#fff}
.btn-gold:hover{background:#a07c39}
.btn-navy{background:var(--navy);color:#fff}
.btn-navy:hover{background:var(--navy-2)}
.btn-ghost{border-color:rgba(255,255,255,.7);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-sm{padding:9px 18px;font-size:.92rem}
.btn-block{width:100%}

/* Navegación */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--navy)}
.logo{width:44px;height:44px;border-radius:10px;background:var(--navy);color:var(--gold-2);display:grid;place-items:center;font-family:"Playfair Display",serif;font-weight:700;font-size:1.1rem;border:2px solid var(--gold);flex:none}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:.98rem}
.brand-text small{color:var(--muted);font-size:.78rem}
.menu{display:flex;align-items:center;gap:26px}
.menu a{text-decoration:none;color:var(--ink);font-weight:500;font-size:.95rem}
.menu a:not(.btn):hover{color:var(--gold)}
.menu .btn{color:#fff}
.menu-btn{display:none;background:none;border:0;padding:8px;cursor:pointer}
.menu-btn span{display:block;width:24px;height:2px;background:var(--navy);margin:5px 0;transition:.2s}

/* Hero */
.hero{position:relative;min-height:88vh;display:flex;align-items:center;color:#fff;overflow:hidden}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-shade{position:absolute;inset:0;background:linear-gradient(100deg,rgba(10,30,50,.94) 0%,rgba(15,42,68,.85) 45%,rgba(15,42,68,.35) 100%)}
.hero-content{position:relative;padding-top:60px;padding-bottom:60px;max-width:1160px}
.hero h1{color:#fff;font-size:clamp(2rem,5vw,3.4rem);max-width:720px}
.hero h1 span{color:var(--gold-2)}
.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.78rem;font-weight:700;color:var(--gold);margin:0 0 12px}
.hero .eyebrow{color:var(--gold-2)}
.lead{font-size:1.12rem;max-width:620px;color:#dfe6ee}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0}
.hero-points{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:10px 26px;color:#cfd8e2;font-size:.95rem}
.hero-points li::before{content:"✓";color:var(--gold-2);font-weight:700;margin-right:8px}

/* Secciones */
.section{padding:90px 0}
.section-alt{background:var(--bg-alt)}
.section-head{text-align:center;max-width:720px;margin:0 auto 48px}
.section-head p:last-child{color:var(--muted)}

.grid.services{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:22px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.25s;position:relative}
.card::before{content:"";position:absolute;left:0;top:0;height:3px;width:0;background:var(--gold);transition:.3s;border-radius:var(--radius) var(--radius) 0 0}
.card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.card:hover::before{width:100%}
.card p{color:var(--muted);margin:0;font-size:.95rem}
.ico{width:48px;height:48px;border-radius:12px;background:#eef2f6;display:grid;place-items:center;font-size:1.4rem;margin-bottom:16px}

/* Trámites SAT */
.sat-tabs{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:28px}
.sat-tabs button{border:1px solid var(--line);background:#fff;color:var(--navy);padding:10px 18px;border-radius:999px;font:600 .93rem Inter,sans-serif;cursor:pointer}
.sat-tabs button[aria-selected="true"]{background:var(--navy);color:#fff;border-color:var(--navy)}
.sat-panel{max-width:860px;margin:0 auto;display:grid;gap:12px}
details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:0 22px}
details[open]{box-shadow:var(--shadow)}
summary{cursor:pointer;list-style:none;padding:18px 30px 18px 0;font-weight:600;color:var(--navy);position:relative}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:0;top:50%;transform:translateY(-50%);font-size:1.4rem;color:var(--gold);transition:.2s}
details[open] summary::after{content:"−"}
details p{margin:0 0 14px;color:var(--muted)}
details p:last-child{padding-bottom:6px}
details b{color:var(--ink)}
.sat-cta{text-align:center;margin-top:40px}
.sat-cta p{margin-bottom:16px}

/* Pasos */
.steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:24px;counter-reset:s}
.steps li{padding:28px;border-radius:var(--radius);background:var(--bg-alt);position:relative}
.steps span{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:var(--navy);color:var(--gold-2);font-weight:700;margin-bottom:14px}
.steps p{color:var(--muted);margin:0}

.faq{display:grid;gap:12px}

/* Contacto */
.contact{background:linear-gradient(180deg,#fff 0%,var(--bg-alt) 100%)}
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:48px;align-items:start}
.info-list{list-style:none;padding:0;margin:24px 0}
.info-list li{display:flex;flex-direction:column;padding:14px 0;border-bottom:1px solid var(--line)}
.info-list b{font-size:.78rem;text-transform:uppercase;letter-spacing:.1em;color:var(--gold)}
.info-list a,.info-list address{font-style:normal;color:var(--navy);font-weight:500;text-decoration:none}
.map{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);aspect-ratio:16/10}
.map iframe{width:100%;height:100%;border:0}
.form{background:#fff;border-radius:18px;padding:34px;box-shadow:0 20px 50px rgba(15,42,68,.12);border-top:4px solid var(--gold)}
.form h3{font-size:1.4rem}
.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:flex;flex-direction:column;margin-bottom:14px}
.field label{font-size:.88rem;font-weight:600;margin-bottom:6px}
input,select,textarea{font:inherit;padding:12px 14px;border:1px solid #cfd6de;border-radius:10px;background:#fbfcfd;width:100%}
input:focus,select:focus,textarea:focus{outline:2px solid var(--gold);border-color:var(--gold);background:#fff}
.invalid{border-color:#c0392b;background:#fff6f5}
.hp{position:absolute;left:-9999px}
.check{display:flex;gap:10px;align-items:flex-start;font-size:.86rem;color:var(--muted);margin:6px 0 18px}
.check input{width:auto;margin-top:4px}
.form-note{font-size:.9rem;margin:12px 0 0;min-height:1.2em}
.form-note.ok{color:#1e7d4f}
.form-note.err{color:#c0392b}

/* Footer */
.footer{background:var(--navy);color:#c3cfdb;padding:64px 0 24px;font-size:.93rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}
.footer h4{color:#fff;margin:0 0 14px;font-size:1rem}
.footer ul{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.footer a{color:#c3cfdb;text-decoration:none}
.footer a:hover{color:var(--gold-2)}
.brand.light{color:#fff;margin-bottom:14px}
.brand.light small{color:var(--gold-2)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:20px;font-size:.82rem;color:#93a3b4}

.wa-float{position:fixed;right:20px;bottom:20px;width:60px;height:60px;border-radius:50%;background:#25d366;color:#fff;display:grid;place-items:center;box-shadow:0 8px 24px rgba(0,0,0,.25);z-index:60;transition:.2s}
.wa-float:hover{transform:scale(1.08)}

/* Responsivo */
@media (max-width:900px){
  .menu-btn{display:block}
  .menu{position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:8px 20px 20px;border-bottom:1px solid var(--line);display:none}
  .menu.open{display:flex}
  .menu a{padding:12px 0;border-bottom:1px solid var(--line)}
  .menu .btn{margin-top:12px;border:0}
  .contact-grid,.footer-grid{grid-template-columns:1fr}
  .section{padding:64px 0}
}
@media (max-width:560px){
  .wrap{padding:0 16px}
  .row{grid-template-columns:1fr}
  .form{padding:24px 18px}
  .brand-text small{display:none}
  .hero{min-height:auto}
  .hero-cta .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}