/* ============================================================
   MADT — madt.study
   Corporate identity: indigo #2E3192, orange #F26522, Arial
   ============================================================ */

:root{
  --indigo:#2E3192;
  --indigo-2:#242876;
  --orange:#F26522;
  --ink:#1B1D2A;
  --body:#41465B;
  --muted:#6B7185;
  --tint-i:#EEF0FA;
  --tint-o:#FDEEE6;
  --line:#E3E6F2;
  --white:#FFFFFF;
  --max:1120px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:Arial, "Helvetica Neue", Helvetica, sans-serif;
  color:var(--body);
  background:var(--white);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--indigo);text-decoration:none;}

.wrap{max-width:var(--max);margin:0 auto;padding:0 24px;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-block;
  background:var(--orange);
  color:#fff;
  font-weight:bold;
  padding:14px 26px;
  border-radius:8px;
  border:2px solid var(--orange);
  transition:transform .15s ease, filter .15s ease;
}
.btn:hover{filter:brightness(1.05);transform:translateY(-1px);}
.btn-sm{padding:9px 18px;font-size:.92rem;}
.btn-ghost{background:transparent;color:var(--indigo);border-color:var(--indigo);}
.btn-ghost:hover{background:var(--indigo);color:#fff;}
.btn-light{background:#fff;color:var(--indigo);border-color:#fff;font-size:1.05rem;}
.btn-light:hover{filter:none;background:var(--tint-i);}

/* ---------- Header ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(1.4) blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px;}
.brand img{height:34px;width:auto;}
.nav-links{display:flex;align-items:center;gap:28px;}
.nav-links a{color:var(--ink);font-weight:bold;font-size:.95rem;}
.nav-links a:hover{color:var(--indigo);}
.nav-links a.btn{color:#fff;}
.nav-links a.btn-sm:hover{color:#fff;}

/* ---------- Hero ---------- */
.hero{position:relative;padding:96px 0 0;text-align:center;background:
  radial-gradient(1200px 400px at 50% -80px, var(--tint-i), #fff 70%);}
.hero-inner{max-width:820px;}
.eyebrow{
  color:var(--orange);font-weight:bold;letter-spacing:.32em;
  font-size:.82rem;margin:0 0 8px;text-transform:uppercase;
}
.hero-title{margin:0;line-height:1;font-size:clamp(72px,14vw,150px);letter-spacing:-.02em;}
.hero-title .mad{color:var(--indigo);font-weight:bold;}
.hero-title .plus{color:var(--orange);font-weight:bold;}
.hero-tagline{
  margin:14px 0 0;color:var(--indigo);font-weight:bold;
  font-size:clamp(1.05rem,2.6vw,1.5rem);
}
.hero-lede{margin:20px auto 0;max-width:640px;color:var(--body);font-size:1.08rem;}
.hero-cta{margin:34px 0 90px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}
.hero-rule{height:10px;background:linear-gradient(90deg,var(--orange) 0 30%,var(--indigo) 30% 100%);}

/* ---------- Sections ---------- */
.section{padding:88px 0;}
.section-tint{background:var(--tint-i);}
.kicker{
  color:var(--orange);font-weight:bold;letter-spacing:.18em;
  text-transform:uppercase;font-size:.8rem;margin:0 0 10px;
}
.kicker.center{text-align:center;}
h2{color:var(--indigo);font-size:clamp(1.6rem,3.4vw,2.3rem);line-height:1.2;margin:0 0 8px;}
h2.center{text-align:center;margin-bottom:44px;}
h3{color:var(--ink);font-size:1.18rem;margin:0 0 8px;}
.prose p{margin:0 0 16px;}
.prose p:last-child{margin-bottom:0;}

.grid-2{display:grid;grid-template-columns:1fr 1.2fr;gap:48px;align-items:start;}

/* ---------- Ticks list ---------- */
.ticks{list-style:none;margin:0;padding:0;}
.ticks li{position:relative;padding:0 0 16px 34px;}
.ticks li::before{
  content:"";position:absolute;left:0;top:.35em;width:16px;height:16px;
  border-radius:4px;background:var(--orange);
}
.ticks li strong{color:var(--indigo);}

/* ---------- Cards ---------- */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.card{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:26px 22px;transition:transform .15s ease, box-shadow .15s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:0 14px 30px rgba(46,49,146,.10);}
.card-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:10px;
  background:var(--tint-o);color:var(--orange);font-weight:bold;margin-bottom:16px;
}
.card p{margin:0;color:var(--body);font-size:.97rem;}

/* ---------- CTA ---------- */
.cta{background:var(--indigo);text-align:center;}
.cta-inner{max-width:680px;margin:0 auto;}
.cta h2{color:#fff;}
.cta p{color:var(--tint-i);font-size:1.1rem;margin:0 0 28px;}

/* ---------- Footer ---------- */
.footer{background:var(--indigo-2);color:#fff;padding:44px 0;text-align:center;}
.footer-logo{height:30px;width:auto;margin:0 auto 12px;filter:brightness(0) invert(1);opacity:.95;}
.footer-tag{margin:0;color:var(--tint-i);font-size:.95rem;}
.footer-copy{margin:8px 0 0;color:#A9AEDC;font-size:.85rem;}

/* ---------- Responsive ---------- */
@media (max-width:820px){
  .grid-2{grid-template-columns:1fr;gap:24px;}
  .cards{grid-template-columns:1fr 1fr;}
  .nav-links{gap:16px;}
  .nav-links a:not(.btn){display:none;}
  .section{padding:64px 0;}
}
@media (max-width:520px){
  .cards{grid-template-columns:1fr;}
}