:root{
  --navy:#1a324e;
  --navy-deep:#122539;
  --gold:#e9bb42;
  --ink:#20303f;
  --paper:#f6f2ea;
  --muted:#5b6b7a;
  --line:#e4ddd0;
  --radius:16px;
  --wrap:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--ink);background:var(--paper);
  font-family:"Segoe UI",system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;
  line-height:1.6;
}
h1,h2,h3{line-height:1.15;margin:0 0 .5em}
h2{font-size:clamp(1.6rem,3vw,2.4rem);text-align:center}
p{margin:0 0 1em}
a{color:inherit}
img,video{max-width:100%;display:block}
.accent{color:var(--gold)}

/* buttons */
.btn{
  display:inline-block;padding:.7em 1.3em;border-radius:999px;
  background:var(--navy);color:#fff;text-decoration:none;font-weight:600;
  border:2px solid var(--navy);transition:transform .12s ease,background .2s;
}
.btn:hover{transform:translateY(-2px)}
.btn-lg{padding:.85em 1.7em;font-size:1.05rem}
.btn-sm{padding:.45em 1em;font-size:.95rem}
.btn-ghost{background:transparent;color:var(--navy)}
.btn-gold{background:var(--gold);border-color:var(--gold);color:#3a2c00}

/* nav */
.nav{
  position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;
  padding:.8rem clamp(1rem,4vw,2rem);background:rgba(246,242,234,.9);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.brand{font-weight:800;font-size:1.5rem;text-decoration:none;color:var(--navy)}
.nav nav{display:flex;gap:clamp(.6rem,3vw,1.6rem);align-items:center}
.nav nav a{text-decoration:none;font-weight:600;color:var(--ink)}

/* hero */
.hero{
  max-width:var(--wrap);margin:0 auto;padding:clamp(2rem,6vw,5rem) clamp(1rem,4vw,2rem);
  display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(1.5rem,4vw,3rem);align-items:center;
}
.hero h1{font-size:clamp(2.4rem,6vw,4rem);font-weight:800}
.lead{font-size:1.2rem;color:var(--muted);max-width:34ch}
.cta-row{display:flex;gap:.8rem;flex-wrap:wrap;margin:1.4rem 0 .6rem}
.microcopy{font-size:.95rem;color:var(--muted)}
.hero-art img{filter:drop-shadow(0 24px 40px rgba(18,37,57,.22))}

/* bands */
.band{max-width:var(--wrap);margin:0 auto;padding:clamp(2.5rem,6vw,4.5rem) clamp(1rem,4vw,2rem)}
.band.alt{background:#fff;max-width:none}
.band.alt>*{max-width:var(--wrap);margin-left:auto;margin-right:auto}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem;margin-top:1.5rem}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.6rem;text-align:center}
.step-num{
  width:44px;height:44px;border-radius:50%;background:var(--navy);color:#fff;
  display:grid;place-items:center;font-weight:800;margin:0 auto .8rem;font-size:1.2rem;
}
.step h3{margin-bottom:.3em}
.step p{color:var(--muted);margin:0}

/* video */
.video-band{
  background:var(--navy);color:#fff;
  display:grid;grid-template-columns:auto 1fr;gap:clamp(1.5rem,4vw,3rem);align-items:center;
  padding:clamp(2rem,5vw,4rem) clamp(1rem,4vw,2rem);
}
.video-band>*{max-width:var(--wrap)}
.video-wrap{margin-left:auto}
.video-wrap video{width:min(300px,70vw);border-radius:20px;box-shadow:0 20px 50px rgba(0,0,0,.4)}
.video-copy h2{text-align:left}
.video-copy p{color:#c9d6e4;max-width:40ch}

/* features */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem;margin-top:1.5rem}
.feature{padding:1.4rem;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper)}
.feature .fi{font-size:1.8rem}
.feature h3{margin:.4em 0 .2em;font-size:1.15rem}
.feature p{color:var(--muted);margin:0}

/* showcase */
.showcase{
  max-width:var(--wrap);margin:0 auto;padding:clamp(2.5rem,6vw,4.5rem) clamp(1rem,4vw,2rem);
  display:grid;grid-template-columns:1fr 1fr;gap:clamp(1.5rem,4vw,3rem);align-items:center;
}
.showcase img{border-radius:var(--radius)}
.showcase-copy h2{text-align:left}
.showcase-copy p{color:var(--muted)}

/* buy */
.buy{text-align:center;background:var(--navy-deep);color:#fff;padding:clamp(3rem,7vw,5rem) 1rem}
.buy p{color:#c9d6e4}
.buy .microcopy{color:#7f93a6;font-size:.85rem;margin-top:1rem}

/* footer */
footer{text-align:center;padding:2.5rem 1rem;background:#101f30;color:#b9c6d4}
.foot-brand{font-weight:800;font-size:1.4rem;color:var(--gold);margin:0}
footer p{margin:.2em 0}
.fine{font-size:.85rem;color:#8296a8}
footer a{color:var(--gold)}

/* responsive */
@media(max-width:820px){
  .hero,.showcase{grid-template-columns:1fr;text-align:center}
  .hero-art{order:-1}
  .lead,.showcase-copy p{max-width:none}
  .cta-row{justify-content:center}
  .showcase-copy h2,.video-copy h2{text-align:center}
  .steps,.features{grid-template-columns:1fr}
  .video-band{grid-template-columns:1fr;text-align:center}
  .video-wrap{margin:0 auto}
  .video-copy p{max-width:none;margin-left:auto;margin-right:auto}
}

/* decks page */
.decks-intro{max-width:var(--wrap);margin:0 auto;padding:clamp(2rem,5vw,3.5rem) clamp(1rem,4vw,2rem) .5rem;text-align:center}
.decks-intro p{color:var(--muted);max-width:54ch;margin:0 auto}
.deck-block{max-width:var(--wrap);margin:0 auto;padding:1.8rem clamp(1rem,4vw,2rem);border-bottom:1px solid var(--line)}
.deck-head{display:flex;align-items:center;gap:.7rem;justify-content:center;margin-bottom:1.1rem}
.deck-badge{background:var(--gold);color:#3a2c00;font-weight:800;border-radius:999px;padding:.12em .7em}
.deck-head h2{margin:0;font-size:1.35rem;text-align:center}
.deck-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}
.deck-cards img{border-radius:12px;box-shadow:0 8px 20px rgba(18,37,57,.12);background:#fff}
@media(max-width:700px){.deck-cards{grid-template-columns:repeat(2,1fr)}}