:root{
  --teal:#3a4a28; --teal-dark:#2b381d; --teal-deep:#232e18; --sand:#d9cdb8; --sand-light:#ebe4d8;
  --hero:#ebe4d8; --olive:#3a4a28; --turq:#3a7f94; --btn:#3a4a28; --btn-hover:#4d6136; --turq-dark:#2b6a7c; --ink:#23261c; --muted:#66675a; --white:#fff; --radius:18px;
  --shadow:0 10px 30px rgba(35,46,24,.14);
}
*{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth}
body{font-family:"Avenir Next","Nunito Sans",system-ui,sans-serif;color:var(--ink);background:#fff;line-height:1.6}
h1,h2,h3{font-family:Montserrat,sans-serif;line-height:1.15}
a{color:inherit}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
section{padding:80px 0}
.eyebrow{letter-spacing:.3em;text-transform:uppercase;font-size:.78rem;color:var(--teal);font-weight:600}
h2{font-size:clamp(1.8rem,4vw,2.6rem);font-weight:300;margin:8px 0 12px}
h2 b{font-weight:700;color:var(--teal)}
.lead{color:var(--muted);max-width:640px}

/* Header */
header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid #eee}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--teal)}
.brand img{width:34px;height:34px}
.brand span{font-family:Montserrat;font-weight:600;letter-spacing:.3em;color:var(--ink)}
nav ul{display:flex;gap:26px;list-style:none;padding:0}
nav a{text-decoration:none;font-size:.95rem;color:var(--muted)}
nav a:hover{color:var(--teal)}
.actions{display:flex;gap:10px;align-items:center}
.btn{border:0;border-radius:999px;padding:12px 24px;font:600 .95rem Montserrat,sans-serif;cursor:pointer;background:var(--btn);color:#fff;text-decoration:none;display:inline-block;transition:.2s}
.btn:hover{background:var(--btn-hover);transform:translateY(-1px);box-shadow:0 6px 16px rgba(58,74,40,.25)}
.btn.ghost{background:transparent;color:var(--btn);border:1.5px solid var(--btn)}
.btn.ghost:hover{background:var(--btn);color:#fff;box-shadow:none}
.btn.sm{padding:8px 18px;font-size:.85rem}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* Hero */
.hero{background:var(--hero);color:var(--olive);padding:90px 0;overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:center}
.hero h1{font-size:clamp(2.2rem,5.5vw,3.8rem);font-weight:300;color:var(--olive)}
.hero h1 b{font-weight:700;color:var(--olive)}
.hero .eyebrow{color:var(--olive)}
.hero p{margin:20px 0 30px;font-size:1.1rem;max-width:520px}
.hero .btn.ghost{background:transparent;color:var(--olive);border-color:var(--olive)}
.hero .btn.ghost:hover{background:var(--olive);color:#fff}
.hero-card{background:rgba(255,255,255,.45);border:1px solid rgba(58,74,40,.2);border-radius:28px;padding:36px;text-align:center}
.hero-card img{width:150px}
.hero-card .t{font-family:Montserrat;letter-spacing:.35em;font-weight:600;font-size:1.6rem;margin-top:10px}
.hero-card .s{letter-spacing:.25em;font-size:.8rem;opacity:.85}
.stats{display:flex;gap:34px;margin-top:40px;flex-wrap:wrap}
.stats div b{display:block;font:700 2rem Montserrat}
.stats div span{font-size:.85rem;opacity:.85}

/* Cards */
.grid{display:grid;gap:22px;margin-top:40px}
.grid.p3{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.card{background:#fff;border:1px solid #e8e2de;border-radius:var(--radius);padding:30px;box-shadow:var(--shadow)}
.plan{position:relative;display:flex;flex-direction:column}
.plan.popular{border:2px solid var(--teal)}
.plan .tag{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--teal);color:#fff;font-size:.72rem;letter-spacing:.15em;padding:4px 14px;border-radius:99px;font-weight:600}
.plan h3{font-weight:600;font-size:1.2rem}
.price{font:700 2.6rem Montserrat;color:var(--teal);margin:10px 0}
.price small{font-size:.9rem;color:var(--muted);font-weight:400}
.plan ul{list-style:none;padding:0;margin:14px 0 26px;flex:1}
.plan li{padding:6px 0 6px 26px;position:relative;color:var(--muted)}
.plan li::before{content:"✓";position:absolute;left:0;color:var(--teal);font-weight:700}
.sand{background:var(--sand-light)}
.trial{background:var(--teal);color:#fff;border-radius:var(--radius);padding:34px;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;margin-top:30px}
.trial h3{font-weight:500;font-size:1.4rem}.trial .btn{background:var(--sand-light);color:var(--olive)}
.trial .btn:hover{background:#fff}

/* Steps / teacher */
.steps{counter-reset:s}
.steps .card::before{counter-increment:s;content:counter(s);display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:var(--sand);color:var(--teal-deep);font:700 1.1rem Montserrat;margin-bottom:14px}
.teacher{display:grid;grid-template-columns:.8fr 1.2fr;gap:50px;align-items:center}
.avatar{aspect-ratio:1;border-radius:50%;background:linear-gradient(135deg,var(--olive),var(--turq));display:grid;place-items:center;max-width:340px;margin:auto;width:100%;overflow:hidden;box-shadow:var(--shadow)}
.avatar .photo{width:100%;height:100%;object-fit:cover}
.avatar .fallback{width:45%;height:auto}
.flags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.flags span{background:var(--sand-light);color:var(--teal-deep);padding:5px 14px;border-radius:99px;font-size:.85rem}

/* Testimonials */
.tgrid{columns:3 280px;column-gap:22px;margin-top:40px}
.tgrid .card{break-inside:avoid;margin-bottom:22px;padding:24px}
.stars{color:#e0a82e;letter-spacing:2px}
.who{margin-top:12px;font-weight:600;color:var(--teal-deep);font-size:.9rem}

/* FAQ */
details{border-bottom:1px solid #e8e2de;padding:18px 0}
summary{cursor:pointer;font:600 1.05rem Montserrat;list-style:none;display:flex;justify-content:space-between}
summary::after{content:"+";color:var(--teal);font-size:1.4rem}
details[open] summary::after{content:"–"}
details p{margin-top:10px;color:var(--muted)}

/* Forms */
form{display:grid;gap:12px}
input,textarea,select{width:100%;padding:13px 16px;border:1.5px solid #ddd5d0;border-radius:12px;font:inherit;background:#fff}
input:focus,textarea:focus,select:focus{outline:0;border-color:var(--teal)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.msg{font-size:.9rem;min-height:1.3em}.msg.err{color:#b3261e}.msg.ok{color:#1b7a43}

footer{background:var(--teal-deep);color:#d9dfd2;padding:50px 0 30px}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:24px}
footer a{color:#fff;margin-right:16px;text-decoration:none}

/* Modal */
.modal{position:fixed;inset:0;background:rgba(10,30,36,.6);display:none;place-items:center;z-index:50;padding:16px}
.modal.open{display:grid}
.box{background:#fff;border-radius:24px;padding:30px;width:100%;max-width:520px;max-height:92vh;overflow:auto;position:relative}
.box h3{font-size:1.4rem;margin-bottom:14px}
.x{position:absolute;top:14px;right:18px;background:0;border:0;font-size:1.6rem;cursor:pointer;color:var(--muted)}
.days{display:flex;gap:8px;overflow-x:auto;padding-bottom:8px;margin:10px 0}
.day{flex:0 0 auto;border:1.5px solid #ddd5d0;background:#fff;border-radius:12px;padding:8px 14px;cursor:pointer;text-align:center;font-size:.85rem}
.day.on{background:var(--teal);color:#fff;border-color:var(--teal)}
.slots{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:10px 0 16px}
.slot{border:1.5px solid var(--sand);background:#fff;border-radius:10px;padding:8px 0;cursor:pointer;font-size:.9rem}
.slot.on{background:var(--teal);color:#fff;border-color:var(--teal)}
.mine li{display:flex;justify-content:space-between;gap:10px;padding:10px 0;border-bottom:1px solid #eee;list-style:none;align-items:center;font-size:.92rem}
.mine{padding:0}

@media(max-width:820px){
  nav ul{display:none}.hero .wrap,.teacher,.two{grid-template-columns:1fr}
  .hero-card{display:none}section{padding:56px 0}.slots{grid-template-columns:repeat(3,1fr)}
}

/* Chat */
.chat-fab{position:fixed;right:20px;bottom:20px;z-index:40;width:58px;height:58px;border-radius:50%;border:0;background:var(--teal);color:#fff;font-size:1.5rem;cursor:pointer;box-shadow:var(--shadow);display:none}
.chat-fab.show{display:block}.chat-fab .dot{position:absolute;top:6px;right:6px;width:12px;height:12px;border-radius:50%;background:#e0562e;display:none}
.chat-fab .dot.on{display:block}
.chat{position:fixed;right:20px;bottom:90px;z-index:40;width:340px;max-width:calc(100vw - 40px);height:460px;max-height:70vh;background:#fff;border-radius:20px;box-shadow:0 16px 48px rgba(0,0,0,.25);display:none;flex-direction:column;overflow:hidden}
.chat.open{display:flex}
.chat header{position:static;background:var(--teal);color:#fff;padding:14px 18px;font:600 1rem Montserrat;border:0}
.chat header small{display:block;font:400 .75rem "Nunito Sans";opacity:.85}
.msgs{flex:1;overflow:auto;padding:14px;display:flex;flex-direction:column;gap:8px;background:var(--sand-light)}
.m{max-width:80%;padding:8px 12px;border-radius:14px;font-size:.92rem;word-wrap:break-word;white-space:pre-wrap}
.m.me{align-self:flex-end;background:var(--teal);color:#fff;border-bottom-right-radius:4px}
.m.them{align-self:flex-start;background:#fff;border-bottom-left-radius:4px}
.m time{display:block;font-size:.68rem;opacity:.65;margin-top:2px}
.chat form{display:flex;gap:8px;padding:10px;border-top:1px solid #eee}
.chat form input{padding:10px 14px}.chat form .btn{padding:10px 16px}
.chat .note{padding:20px;text-align:center;color:var(--muted);font-size:.9rem}

/* Badge de reseñas en portada */
.proof{display:inline-flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:26px;padding:9px 18px;border-radius:99px;background:rgba(255,255,255,.6);border:1px solid rgba(58,74,40,.15);font-size:.9rem;text-decoration:none;color:var(--olive)}
.proof:hover{background:#fff}.proof .stars{font-size:1rem}.proof i{width:1px;height:16px;background:rgba(58,74,40,.3)}

/* Banderas */
.flags span{display:inline-flex;align-items:center;gap:8px;padding:6px 14px 6px 8px}
.flag{width:22px;height:auto;border-radius:3px;box-shadow:0 0 0 1px rgba(0,0,0,.12);display:block}
.who .flag{display:inline-block;vertical-align:-2px;margin-right:6px;width:18px}

/* Video */
.video{margin-top:30px;aspect-ratio:16/9;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);background:var(--olive)}
.video iframe{width:100%;height:100%;border:0;display:block}
.video-cta{margin-top:18px;text-align:center}