/* Natural Speak — Landing page */
:root{
  --navy:#0e2a5e; --navy2:#12336f; --blue:#1a6fe0; --sky:#e9f2fe; --sky2:#f3f8ff;
  --green:#16a34a; --green-d:#128a3f; --lime:#7bc142;
  --ink:#16233b; --body:#41506a; --muted:#6b7a90; --line:#e5ecf5;
  --bg:#f6f9fc; --white:#fff; --radius:14px;
  --shadow:0 10px 30px rgba(16,42,94,.08); --shadow-sm:0 4px 14px rgba(16,42,94,.06);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;font-family:Inter,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--body);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased;}
h1,h2,h3,h4{font-family:Poppins,Inter,sans-serif;color:var(--ink);line-height:1.2;margin:0 0 .5em;}
h2{font-size:2rem;font-weight:700;}
h3{font-size:1.2rem;font-weight:600;}
p{margin:0 0 1rem;}
a{color:var(--blue);text-decoration:none;}
img{max-width:100%;}
.wrap{max-width:1120px;margin:0 auto;padding:0 22px;}
.center{text-align:center;}
.eyebrow{display:inline-block;font-family:Poppins,sans-serif;font-weight:600;font-size:.8rem;letter-spacing:.08em;text-transform:uppercase;color:var(--blue);background:var(--sky);padding:6px 14px;border-radius:20px;margin-bottom:14px;}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;font-family:Poppins,sans-serif;font-weight:600;font-size:1rem;padding:14px 26px;border-radius:12px;cursor:pointer;border:none;transition:transform .12s,box-shadow .15s,background .15s;text-align:center;}
.btn-primary{background:var(--green);color:#fff;box-shadow:0 6px 18px rgba(22,163,74,.28);}
.btn-primary:hover{background:var(--green-d);transform:translateY(-1px);}
.btn-blue{background:var(--blue);color:#fff;box-shadow:0 6px 18px rgba(26,111,224,.25);}
.btn-blue:hover{background:#1560c4;transform:translateY(-1px);}
.btn-ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.5);}
.btn-ghost:hover{background:rgba(255,255,255,.12);}
.btn-outline{background:#fff;color:var(--navy);border:1.5px solid var(--line);}
.btn-outline:hover{border-color:var(--blue);color:var(--blue);}
.btn.lg{padding:16px 32px;font-size:1.05rem;}

/* Header */
.nsx-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:saturate(160%) blur(8px);border-bottom:1px solid var(--line);}
.nsx-nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:10px 0;}
.nsx-logo img{height:52px;width:auto;display:block;}
.nsx-menu{display:flex;align-items:center;gap:26px;}
.nsx-menu a{color:var(--ink);font-weight:500;font-size:.95rem;}
.nsx-menu a:hover{color:var(--blue);}
.nsx-actions{display:flex;align-items:center;gap:12px;}
.nsx-login{color:var(--ink);font-weight:600;font-size:.95rem;}
.nsx-burger{display:none;background:none;border:none;cursor:pointer;font-size:1.6rem;color:var(--ink);}

/* Hero */
.hero{background:radial-gradient(1200px 500px at 80% -10%,#1c4aa0 0,transparent 60%),linear-gradient(160deg,#0c2452,#123c86);color:#fff;padding:76px 0 88px;position:relative;overflow:hidden;}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;}
.hero .eyebrow{background:rgba(255,255,255,.14);color:#cfe0ff;}
.hero h1{color:#fff;font-size:3rem;font-weight:800;letter-spacing:-.5px;}
.hero h1 .hl{color:#8fe3a6;}
.hero .lead{font-size:1.18rem;color:#d5e2f7;max-width:560px;}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin:26px 0 16px;}
.hero-note{font-size:.9rem;color:#aac2ea;display:flex;align-items:center;gap:8px;}
.hero-art{position:relative;}
.chatcard{background:#fff;color:var(--ink);border-radius:18px;box-shadow:0 20px 50px rgba(6,20,50,.35);padding:20px;max-width:400px;margin-left:auto;}
.chatcard .row{display:flex;gap:10px;margin:12px 0;align-items:flex-start;}
.chatcard .av{width:38px;height:38px;border-radius:50%;flex:0 0 auto;display:flex;align-items:center;justify-content:center;font-size:1.1rem;}
.chatcard .av.en{background:var(--sky);}
.chatcard .av.es{background:#eafbf0;}
.bubble{border-radius:12px;padding:9px 13px;font-size:.95rem;}
.bubble.en{background:var(--sky);color:var(--navy);}
.bubble.en b{color:var(--blue);}
.bubble.es{background:#f1f5f9;color:var(--body);font-style:italic;}
.chatcard .tag{display:inline-block;font-size:.72rem;font-weight:600;color:var(--green);background:#eafbf0;padding:3px 10px;border-radius:20px;margin-bottom:6px;}

/* Sections */
section{padding:72px 0;}
.sec-head{max-width:720px;margin:0 auto 44px;text-align:center;}
.sec-head p{font-size:1.08rem;color:var(--muted);}
.alt{background:var(--white);}
.tinted{background:linear-gradient(180deg,var(--sky2),#fff);}

/* Problem */
.prob-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;}
.prob{background:#fff;border:1px solid var(--line);border-left:4px solid #f0b429;border-radius:12px;padding:18px 20px;box-shadow:var(--shadow-sm);}
.prob b{color:var(--ink);}
.prob-close{margin-top:30px;text-align:center;font-size:1.15rem;color:var(--ink);font-weight:600;}

/* Solution / feature list */
.sol-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px;}
.sol{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm);transition:transform .15s,box-shadow .15s;}
.sol:hover{transform:translateY(-3px);box-shadow:var(--shadow);}
.sol .ic{width:46px;height:46px;border-radius:12px;background:var(--sky);color:var(--blue);display:flex;align-items:center;justify-content:center;margin-bottom:12px;}
.sol .ic svg{width:24px;height:24px;}

/* How it works */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.step{text-align:center;position:relative;}
.step .num{width:56px;height:56px;margin:0 auto 14px;border-radius:50%;background:var(--navy);color:#fff;font-family:Poppins;font-weight:700;font-size:1.4rem;display:flex;align-items:center;justify-content:center;}
.step h3{font-size:1.1rem;}
.step p{font-size:.95rem;color:var(--muted);}

/* Benefits */
.ben-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px;}
.ben{display:flex;gap:12px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px;}
.ben .chk{flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:#eafbf0;color:var(--green);display:flex;align-items:center;justify-content:center;font-weight:800;}
.ben b{color:var(--ink);display:block;}
.ben span{font-size:.92rem;color:var(--muted);}

/* Levels */
.lvl-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;}
.lvl{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px;box-shadow:var(--shadow-sm);position:relative;overflow:hidden;}
.lvl .badge{display:inline-block;font-size:.78rem;font-weight:700;padding:4px 12px;border-radius:20px;margin-bottom:12px;}
.lvl.basic .badge{background:#eafbf0;color:var(--green);}
.lvl.inter .badge{background:var(--sky);color:var(--blue);}
.lvl.adv .badge{background:#f3ecff;color:#7c3aed;}
.lvl.diaria .badge{background:#fff4e5;color:#d97706;}
.lvl h3{font-size:1.35rem;}
.lvl ul{list-style:none;padding:0;margin:14px 0 0;}
.lvl li{padding:6px 0 6px 26px;position:relative;font-size:.94rem;}
.lvl li::before{content:"✓";position:absolute;left:0;color:var(--green);font-weight:800;}
.lvl .soon{position:absolute;top:16px;right:16px;font-size:.7rem;font-weight:700;color:#7c3aed;background:#f3ecff;padding:3px 9px;border-radius:20px;}

/* Phrases */
.phr-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px;}
.phr{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 20px;box-shadow:var(--shadow-sm);}
.phr .ctx{display:flex;align-items:center;gap:8px;font-size:.8rem;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.04em;margin-bottom:8px;}
.phr .ctx .em{font-size:1.1rem;}
.phr .en{color:var(--navy);font-weight:600;font-size:1.05rem;}
.phr .es{color:var(--muted);font-style:italic;font-size:.92rem;}

/* Method */
.method{background:linear-gradient(160deg,#0c2452,#15408c);color:#fff;border-radius:22px;padding:46px;}
.method h2{color:#fff;}
.method .sub{color:#cfe0ff;max-width:620px;}
.method-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin-top:26px;}
.m-item{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:14px;padding:18px;}
.m-item b{color:#fff;display:block;margin-bottom:4px;font-family:Poppins;}
.m-item span{color:#c6d6f2;font-size:.93rem;}

/* Resources (future) */
.res-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px;}
.res{background:#fff;border:1px dashed var(--line);border-radius:12px;padding:18px;text-align:center;}
.res .em{font-size:1.7rem;display:block;margin-bottom:8px;}
.res b{color:var(--ink);font-size:.98rem;}
.res-note{text-align:center;color:var(--muted);margin-top:22px;font-size:.92rem;}

/* Trust */
.trust-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;margin-bottom:34px;}
.trust{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;text-align:center;}
.trust .em{font-size:1.6rem;display:block;margin-bottom:6px;}
.trust b{color:var(--ink);font-size:.95rem;}
.testi-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;}
.testi{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;box-shadow:var(--shadow-sm);}
.testi .stars{color:#f5b301;margin-bottom:8px;}
.testi p{font-style:italic;color:var(--body);}
.testi .who{display:flex;align-items:center;gap:10px;margin-top:12px;}
.testi .who .av{width:40px;height:40px;border-radius:50%;background:var(--sky);color:var(--blue);display:flex;align-items:center;justify-content:center;font-weight:700;}
.testi .who b{color:var(--ink);font-size:.92rem;}
.testi .who span{color:var(--muted);font-size:.82rem;}
.testi.ph{border-style:dashed;background:var(--sky2);}
.testi.ph p{color:var(--muted);}

/* Final CTA */
.finalcta{background:linear-gradient(160deg,#0e2a5e,#1a6fe0);color:#fff;text-align:center;border-radius:24px;padding:56px 30px;}
.finalcta h2{color:#fff;font-size:2.2rem;}
.finalcta p{color:#d5e2f7;max-width:620px;margin:0 auto 24px;font-size:1.1rem;}
.finalcta .reinforce{margin-top:16px;font-size:.9rem;color:#aac2ea;}

/* FAQ */
.faq{max-width:820px;margin:0 auto;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:12px;overflow:hidden;}
.faq-q{width:100%;text-align:left;background:none;border:none;cursor:pointer;padding:18px 20px;font-family:Poppins;font-weight:600;font-size:1.02rem;color:var(--ink);display:flex;justify-content:space-between;align-items:center;gap:14px;}
.faq-q .pm{color:var(--blue);font-size:1.4rem;flex:0 0 auto;transition:transform .2s;}
.faq-item.open .faq-q .pm{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;}
.faq-a p{padding:0 20px 18px;margin:0;color:var(--body);}

/* Footer */
.nsx-footer{background:#0b1f45;color:#c6d3ea;padding:52px 0 26px;}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px;}
.nsx-footer img{height:48px;margin-bottom:12px;filter:brightness(0) invert(1);}
.nsx-footer h4{color:#fff;font-size:.95rem;margin-bottom:12px;}
.nsx-footer a{color:#c6d3ea;display:block;padding:4px 0;font-size:.92rem;}
.nsx-footer a:hover{color:#fff;}
.foot-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:30px;padding-top:18px;text-align:center;font-size:.85rem;color:#8fa1c4;}
.foot-social a{display:inline-block;margin-right:12px;font-size:1.3rem;}

/* Responsive */
@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr;}
  .hero-art{display:none;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .foot-grid{grid-template-columns:1fr 1fr;}
}
@media(max-width:680px){
  h2{font-size:1.6rem;}
  .hero h1{font-size:2.2rem;}
  .hero{padding:52px 0 62px;}
  section{padding:52px 0;}
  .nsx-menu,.nsx-login{display:none;}
  .nsx-burger{display:block;}
  .nsx-actions .btn{padding:9px 14px;font-size:.9rem;white-space:nowrap;}
  .nsx-logo img{height:42px;}
  .nsx-menu.open{display:flex;flex-direction:column;position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 10px 22px rgba(0,0,0,.10);padding:16px 22px;gap:14px;z-index:60;}
  .steps{grid-template-columns:1fr;}
  .method{padding:30px 22px;}
  .foot-grid{grid-template-columns:1fr;}
}