:root{
  --red:#E63946; --red-d:#C92F3B; --ink:#141414; --ink-2:#3a3a3a; --muted:#6b6b6b;
  --cream:#FAF7F2; --sand:#F1ECE4; --line:#E4DDD2; --white:#fff; --green:#1F8A4C;
  --r:18px; --max:1160px;
  --h:'Outfit',system-ui,sans-serif; --b:'Inter',system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--b);color:var(--ink);background:var(--cream);line-height:1.6;font-size:17px;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,svg{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3,h4{font-family:var(--h);line-height:1.12;letter-spacing:-.01em}
h1{font-size:clamp(2.2rem,5.6vw,3.9rem);font-weight:700}
h2{font-size:clamp(1.8rem,3.8vw,2.7rem);font-weight:700}
h3{font-size:1.25rem;font-weight:600}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.eyebrow{font-family:var(--h);font-weight:600;font-size:.82rem;letter-spacing:.14em;text-transform:uppercase;color:var(--red)}
.lead{font-size:1.15rem;color:var(--ink-2);max-width:640px}
section{padding:84px 0}
.center{text-align:center}.center .lead{margin:0 auto}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:10px;font-family:var(--h);font-weight:600;font-size:1.02rem;padding:15px 24px;border-radius:999px;text-decoration:none;transition:.18s;border:2px solid transparent;cursor:pointer}
.btn-wa{background:var(--green);color:#fff}.btn-wa:hover{background:#18723e}
.btn-red{background:var(--red);color:#fff}.btn-red:hover{background:var(--red-d)}
.btn-ghost{border-color:var(--ink);color:var(--ink)}.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-light{border-color:rgba(255,255,255,.5);color:#fff}.btn-light:hover{background:#fff;color:var(--ink)}
.btn svg{width:20px;height:20px}

/* header */
header{position:sticky;top:0;z-index:50;background:rgba(250,247,242,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:70px;gap:16px}
.nav .logo img{height:42px;width:auto}
.nav ul{display:flex;gap:28px;list-style:none;font-weight:500;font-size:.96rem}
.nav ul a{text-decoration:none;color:var(--ink-2)}.nav ul a:hover{color:var(--red)}
.nav .btn{padding:10px 18px;font-size:.92rem}
@media(max-width:900px){.nav ul{display:none}}

/* hero */
.hero{padding:64px 0 76px;position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.hero h1 em{font-style:normal;color:var(--red)}
.hero .lead{margin:22px 0 30px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px}
.trust{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:30px;font-size:.92rem;color:var(--muted)}
.trust span{display:flex;align-items:center;gap:8px}
.trust span::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--red)}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr}.hero{padding-top:40px}}

/* hero visual: unit stack */
.stack{position:relative;background:var(--ink);border-radius:28px;padding:26px;color:#fff;box-shadow:0 30px 60px -30px rgba(20,20,20,.55)}
.stack .bar{display:flex;justify-content:space-between;align-items:center;font-size:.8rem;color:#bdbdbd;margin-bottom:16px}
.stack .bar b{color:#fff;font-family:var(--h);font-size:1.05rem}
.stack .pill{background:var(--red);color:#fff;border-radius:999px;padding:4px 12px;font-size:.72rem;font-weight:600}
.tiles{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.tile{background:#1f1f1f;border:1px solid #2c2c2c;border-radius:16px;padding:16px}
.tile .ic{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;background:rgba(230,57,70,.15);color:var(--red);margin-bottom:10px}
.tile .ic svg{width:20px;height:20px}
.tile b{display:block;font-family:var(--h);font-size:.98rem}
.tile small{color:#a9a9a9;font-size:.8rem}
.stack .foot{margin-top:14px;font-size:.8rem;color:#bdbdbd;display:flex;align-items:center;gap:8px}
.stack .foot i{width:8px;height:8px;border-radius:50%;background:#2ecc71;display:inline-block}

/* problem/solution */
.split{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:44px}
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:30px}
.card.dark{background:var(--ink);color:#fff;border-color:var(--ink)}
.card h3{margin-bottom:14px}
.card ul{list-style:none;display:grid;gap:12px}
.card li{display:flex;gap:12px;align-items:flex-start}
.card li::before{content:"";flex:0 0 22px;height:22px;border-radius:50%;margin-top:2px;background:#f3d7d9 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23E63946' stroke-width='3'%3E%3Cpath d='M6 6l12 12M18 6L6 18'/%3E%3C/svg%3E") center/12px no-repeat}
.card.dark li::before{background:rgba(46,204,113,.18) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232ecc71' stroke-width='3'%3E%3Cpath d='M5 12l5 5L19 7'/%3E%3C/svg%3E") center/13px no-repeat}
@media(max-width:800px){.split{grid-template-columns:1fr}}

/* features */
.band{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:44px}
.feat{background:var(--cream);border:1px solid var(--line);border-radius:var(--r);padding:26px}
.feat .ic{width:48px;height:48px;border-radius:14px;background:var(--ink);color:#fff;display:grid;place-items:center;margin-bottom:16px}
.feat .ic svg{width:24px;height:24px}
.feat p{color:var(--ink-2);font-size:.97rem;margin-top:8px}
@media(max-width:900px){.grid3{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.grid3{grid-template-columns:1fr}}

/* books */
.books{margin-top:40px;display:grid;grid-template-columns:1fr 1fr;gap:20px}
.grade{background:var(--white);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.grade h3{background:var(--ink);color:#fff;padding:16px 24px;display:flex;justify-content:space-between;align-items:center}
.grade h3 span{font-size:.75rem;background:var(--red);padding:4px 10px;border-radius:999px;font-family:var(--b);font-weight:600}
.grade ul{list-style:none}
.grade li{padding:16px 24px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px}
.grade li:first-child{border-top:0}
.grade li b{font-family:var(--h);font-weight:600}
.grade li small{color:var(--muted);text-align:right;font-size:.86rem}
.request{margin-top:20px;background:var(--sand);border-radius:var(--r);padding:22px 26px;display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap}
.note{font-size:.8rem;color:var(--muted);margin-top:14px}
@media(max-width:800px){.books{grid-template-columns:1fr}.grade li{flex-direction:column;gap:2px}.grade li small{text-align:left}}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:44px;counter-reset:s}
.step{position:relative;background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:30px 26px}
.step::before{counter-increment:s;content:counter(s);font-family:var(--h);font-weight:700;font-size:1.1rem;width:42px;height:42px;border-radius:50%;background:var(--red);color:#fff;display:grid;place-items:center;margin-bottom:16px}
.step p{color:var(--ink-2);font-size:.97rem;margin-top:8px}
@media(max-width:800px){.steps{grid-template-columns:1fr}}

/* AI explorers */
.ai{background:var(--ink);color:#fff;border-radius:32px;padding:56px;display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center}
.n1{display:inline-block;background:var(--red);color:#fff;font-family:var(--h);font-weight:700;letter-spacing:.04em;padding:8px 16px;border-radius:999px;font-size:.85rem;margin-bottom:20px}
.ai p{color:#cfcfcf;margin:16px 0 24px}
.ai ul{list-style:none;display:grid;gap:10px;color:#e8e8e8;font-size:.97rem}
.ai li{display:flex;gap:10px}.ai li::before{content:"→";color:var(--red);font-weight:700}
.ai-badge{background:#1f1f1f;border:1px solid #2c2c2c;border-radius:24px;padding:30px;text-align:center}
.ai-badge .big{font-family:var(--h);font-size:3.4rem;font-weight:700;color:var(--red);line-height:1}
.ai-badge small{color:#a9a9a9}
@media(max-width:900px){.ai{grid-template-columns:1fr;padding:34px 24px}}

/* programmes */
.progs{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:44px}
.prog{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:26px;display:flex;flex-direction:column;gap:10px}
.prog .tag{font-size:.75rem;font-weight:600;color:var(--red);text-transform:uppercase;letter-spacing:.1em}
.prog p{color:var(--ink-2);font-size:.95rem;flex:1}
.prog a.more{font-family:var(--h);font-weight:600;color:var(--ink);text-decoration:none;border-bottom:2px solid var(--red);align-self:flex-start}
@media(max-width:900px){.progs{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.progs{grid-template-columns:1fr}}

/* about */
.about{display:grid;grid-template-columns:.8fr 1.2fr;gap:48px;align-items:center}
.about .mark{background:var(--red);border-radius:32px;padding:48px;aspect-ratio:1}
.about .mark img{width:100%;height:100%}
.creds{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.creds span{background:var(--white);border:1px solid var(--line);border-radius:999px;padding:6px 14px;font-size:.84rem}
@media(max-width:800px){.about{grid-template-columns:1fr}.about .mark{max-width:260px}}

/* faq */
.faq{max-width:820px;margin:40px auto 0}
details{background:var(--white);border:1px solid var(--line);border-radius:14px;padding:20px 24px;margin-bottom:12px}
summary{font-family:var(--h);font-weight:600;font-size:1.06rem;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--red);font-size:1.4rem;line-height:1}
details[open] summary::after{content:"–"}
details p{margin-top:12px;color:var(--ink-2)}

/* final cta */
.final{background:var(--red);color:#fff;text-align:center;border-radius:32px;padding:64px 24px}
.final p{opacity:.92;margin:14px auto 28px;max-width:560px}
.final .btn-wa{background:#fff;color:var(--ink)}.final .btn-wa:hover{background:var(--ink);color:#fff}

/* footer */
footer{background:var(--ink);color:#cfcfcf;padding:64px 0 28px;margin-top:84px;font-size:.94rem}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}
footer img{height:56px;width:auto;margin-bottom:18px}
.n2{font-family:var(--h);font-weight:700;color:#fff;font-size:1.3rem;margin-bottom:8px}
footer h4{color:#fff;font-size:1rem;margin-bottom:14px}
footer ul{list-style:none;display:grid;gap:8px}
footer a{text-decoration:none}footer a:hover{color:var(--red)}
.legal{border-top:1px solid #2c2c2c;margin-top:40px;padding-top:22px;font-size:.8rem;color:#8d8d8d;display:grid;gap:6px}
@media(max-width:800px){.fgrid{grid-template-columns:1fr}}

/* floating whatsapp */
.fab{position:fixed;right:18px;bottom:18px;z-index:60;width:58px;height:58px;border-radius:50%;background:var(--green);display:grid;place-items:center;box-shadow:0 10px 24px -8px rgba(0,0,0,.45)}
.fab svg{width:30px;height:30px;color:#fff}
@media(max-width:600px){
  section{padding:60px 0}
  .stack{padding:18px;border-radius:22px}
  .stack .bar{flex-direction:column;align-items:flex-start;gap:8px}
  .stack .pill{white-space:nowrap}
  .tile{padding:12px}
  .nav .btn{padding:9px 14px;font-size:.86rem}
  .nav .logo img{height:36px}
  .cta-row .btn{width:100%;justify-content:center}
  .fab{width:52px;height:52px;right:14px;bottom:14px}
}