:root{
  --teal:#0F766E; --green:#16A34A; --ink:#0f172a; --muted:#475569;
  --bg:#ffffff; --soft:#f1f5f9; --line:#e2e8f0; --max:880px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.6;font-size:16px}
a{color:var(--teal);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}

/* header */
header{position:sticky;top:0;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);z-index:10}
.nav{display:flex;align-items:center;gap:16px;height:64px;max-width:var(--max);margin:0 auto;padding:0 20px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink)}
.brand img{width:34px;height:34px;border-radius:8px;display:block}
.nav .spacer{flex:1}
.nav a{color:var(--muted);font-weight:600;font-size:14px}
.nav a.active{color:var(--ink)}
.langtoggle{display:inline-flex;border:1px solid var(--line);border-radius:999px;overflow:hidden}
.langtoggle button{border:0;background:#fff;color:var(--muted);font-weight:700;font-size:13px;
  padding:6px 12px;cursor:pointer}
.langtoggle button.on{background:var(--teal);color:#fff}

/* hero */
.hero{background:linear-gradient(135deg,var(--teal),var(--green));color:#fff;padding:64px 0}
.hero h1{font-size:40px;margin:0 0 8px;line-height:1.15}
.hero p{font-size:19px;opacity:.95;margin:0;max-width:620px}
.hero .tag{display:inline-block;background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.35);
  border-radius:999px;padding:4px 12px;font-size:13px;font-weight:700;margin-bottom:16px}

/* sections */
main{padding:40px 0 64px}
h2{font-size:24px;margin:36px 0 10px}
h3{font-size:17px;margin:22px 0 6px}
p,li{color:var(--ink)}
.muted{color:var(--muted)}
.card{background:var(--soft);border:1px solid var(--line);border-radius:14px;padding:20px 22px;margin:18px 0}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:640px){.grid{grid-template-columns:1fr}.hero h1{font-size:30px}}
.feature{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px}
.feature b{display:block;color:var(--teal)}
.updated{font-size:13px;color:var(--muted)}
.legal{font-size:15px}
.legal h2{font-size:20px;border-top:1px solid var(--line);padding-top:22px}
.legal ul{padding-left:20px}

/* footer */
footer{border-top:1px solid var(--line);padding:28px 0;color:var(--muted);font-size:13px}
footer a{color:var(--muted);font-weight:600}

/* language visibility */
.lang-es{display:none}
body.es .lang-en{display:none}
body.es .lang-es{display:block}
span.lang-es,a.lang-es{display:none}
body.es span.lang-en,body.es a.lang-en{display:none}
body.es span.lang-es,body.es a.lang-es{display:inline}