:root{
  --blue:#1428A0;
  --blue-lit:#2f6df6;
  --blue-deep:#0b1560;
  --navy:#050a24;
  --ink:#0d1330;
  --body:#454b63;
  --tint:#eef2ff;
  --line:#d8def4;
  --white:#fff;
  --radius:999px;
  --wrap:1120px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--white);
  color:var(--body);
  font-family:'Inter',system-ui,sans-serif;
  font-size:16.5px;
  line-height:1.72;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,.mark,.btn,.stat-v,.eyebrow,.kicker{font-family:'Outfit',sans-serif}
img{max-width:100%}
a{color:var(--blue)}

/* progress */
.progress{position:fixed;inset:0 0 auto 0;height:3px;background:rgba(20,40,160,.12);z-index:60}
.progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,#1428A0,#2f6df6,#7aa2ff)}

/* ===== hero ===== */
.hero{
  position:relative;
  overflow:hidden;
  background:
    radial-gradient(120% 90% at 85% 0%,rgba(47,109,246,.55),transparent 60%),
    radial-gradient(100% 80% at 0% 100%,rgba(11,21,96,.9),transparent 65%),
    linear-gradient(165deg,#0a1a8c 0%,#1428A0 45%,#050a24 100%);
  color:#fff;
  padding:0 0 0;
}
.hero-grid{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(120% 80% at 50% 20%,#000 25%,transparent 78%);
  -webkit-mask-image:radial-gradient(120% 80% at 50% 20%,#000 25%,transparent 78%);
}
.topbar{
  position:relative;z-index:2;
  max-width:var(--wrap);margin:0 auto;
  padding:20px 20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.mark{font-weight:800;letter-spacing:.34em;font-size:.74rem}
.topbar-note{font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;color:rgba(255,255,255,.6)}

.hero-inner{
  position:relative;z-index:2;
  max-width:var(--wrap);margin:0 auto;
  padding:44px 20px 56px;
}
.kicker{
  font-size:.7rem;letter-spacing:.24em;text-transform:uppercase;
  color:#a9c0ff;margin:0 0 26px;
}

/* samsung-style tilted oval wordmark */
.logo-oval{
  position:relative;display:inline-flex;align-items:center;justify-content:center;
  width:246px;height:60px;margin-bottom:26px;
}
.logo-oval::before{
  content:"";position:absolute;inset:0;border-radius:50%;
  background:#fff;transform:rotate(-9deg);
  box-shadow:0 14px 40px rgba(0,0,0,.28);
}
.logo-oval span{
  position:relative;z-index:1;
  font-family:'Outfit',sans-serif;font-weight:700;
  color:var(--blue);font-size:1.28rem;letter-spacing:.12em;
}
.logo-oval.small{width:186px;height:46px;margin:0 0 18px}
.logo-oval.small span{font-size:.98rem}

h1{
  font-size:clamp(2.5rem,10.5vw,5.2rem);
  line-height:.98;letter-spacing:-.03em;font-weight:800;
  margin:0 0 22px;color:#fff;
}
.grad{
  background:linear-gradient(92deg,#9fc0ff,#5b8bff 45%,#c9d8ff);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.lede{
  max-width:56ch;font-size:1.03rem;color:rgba(255,255,255,.82);margin:0 0 30px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}
.btn{
  display:inline-block;padding:13px 26px;border-radius:var(--radius);
  font-weight:600;font-size:.9rem;letter-spacing:.02em;text-decoration:none;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease;
  min-height:46px;
}
.btn.primary{background:#fff;color:var(--blue)}
.btn.primary:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(0,0,0,.3)}
.btn.ghost{border:1px solid rgba(255,255,255,.45);color:#fff}
.btn.ghost:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}

/* stat strip */
.hero-strip{position:relative;z-index:2;border-top:1px solid rgba(255,255,255,.16);background:rgba(3,7,26,.42)}
.strip-row{
  max-width:var(--wrap);margin:0 auto;padding:6px 8px 22px;
  display:grid;grid-template-columns:repeat(2,1fr);
}
.stat{padding:18px 12px;border-top:1px solid rgba(255,255,255,.1)}
.stat-v{display:block;font-size:1.6rem;font-weight:700;color:#fff;letter-spacing:-.02em;line-height:1.1}
.stat-l{display:block;font-size:.78rem;color:#a9c0ff;margin-top:4px;font-weight:500}
.stat-n{display:block;font-size:.72rem;color:rgba(255,255,255,.45);line-height:1.4}

/* ===== sections ===== */
.section{max-width:var(--wrap);margin:0 auto;padding:70px 20px}
.section.tint,.section.dark{max-width:none;padding-left:0;padding-right:0}
.section.tint{background:var(--tint);border-block:1px solid var(--line)}
.section.dark{background:var(--navy);color:rgba(255,255,255,.75)}
.section.tint>*,.section.dark>*{max-width:var(--wrap);margin-inline:auto;padding-inline:20px}

.section-head{margin-bottom:38px}
.eyebrow{
  display:inline-block;font-size:.68rem;letter-spacing:.26em;text-transform:uppercase;
  color:var(--blue);font-weight:600;margin-bottom:12px;
  padding:5px 12px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;
}
.section-head h2{
  font-size:clamp(1.85rem,6.5vw,2.9rem);line-height:1.04;letter-spacing:-.025em;
  color:var(--ink);margin:0 0 12px;font-weight:700;
}
.section-head p{margin:0;max-width:52ch}
.section-head.light h2{color:#fff}
.section-head.light .eyebrow{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.2);color:#9fc0ff}

/* chapters */
.chapters{display:grid;gap:16px}
.chapter{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:22px;
  padding:26px 20px;overflow:hidden;
  opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease;
}
.chapter.in{opacity:1;transform:none}
.chapter::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;
  background:linear-gradient(180deg,var(--blue),var(--blue-lit));
}
.ch-top{display:flex;align-items:baseline;gap:14px;margin-bottom:6px}
.ch-n{font-family:'Outfit',sans-serif;font-size:2.4rem;font-weight:800;color:var(--tint);line-height:1;letter-spacing:-.04em}
.ch-era{font-size:.72rem;letter-spacing:.2em;text-transform:uppercase;color:var(--blue);font-weight:600}
.chapter h3{font-size:clamp(1.35rem,5.2vw,2rem);line-height:1.1;letter-spacing:-.02em;color:var(--ink);margin:0 0 10px;font-weight:700}
.ch-dek{font-size:1rem;color:var(--blue-deep);font-weight:500;margin:0 0 18px;padding-bottom:18px;border-bottom:1px dashed var(--line)}
.ch-body p{margin:0 0 14px}
.ch-body em{color:var(--ink);font-style:italic}
.ledger{list-style:none;margin:20px 0 0;padding:18px 0 0;border-top:1px solid var(--line)}
.ledger li{display:grid;grid-template-columns:56px 1fr;gap:12px;padding:8px 0;font-size:.9rem;border-bottom:1px dotted var(--line)}
.ledger li:last-child{border-bottom:0}
.ledger b{color:var(--blue);font-weight:600;font-variant-numeric:tabular-nums}

/* products */
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.chip{
  font:inherit;font-size:.82rem;font-weight:600;cursor:pointer;
  padding:10px 18px;min-height:44px;border-radius:var(--radius);
  background:#fff;border:1px solid var(--line);color:var(--blue-deep);
  transition:all .18s ease;
}
.chip:hover{border-color:var(--blue-lit)}
.chip[aria-selected="true"]{background:var(--blue);border-color:var(--blue);color:#fff}
.product-grid{display:grid;gap:14px}
.card{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(20,40,160,.13);border-color:#b9c6f2}
.card-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
.card-year{font-family:'Outfit',sans-serif;font-weight:700;font-size:1.5rem;color:var(--blue);letter-spacing:-.03em}
.tag{font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;font-weight:600;color:var(--blue-deep);background:var(--tint);padding:5px 10px;border-radius:var(--radius)}
.card h4{margin:0 0 6px;font-size:1.06rem;color:var(--ink);font-weight:600;letter-spacing:-.01em}
.card p{margin:0;font-size:.9rem}

/* principles */
.principles{display:grid;gap:14px;counter-reset:p}
.pr{padding:22px;border:1px solid var(--line);border-radius:18px;background:linear-gradient(180deg,#fff,var(--tint))}
.pr h4{margin:0 0 8px;font-size:1.05rem;color:var(--ink);font-weight:600}
.pr h4::before{counter-increment:p;content:counter(p) " · ";color:var(--blue-lit)}
.pr p{margin:0;font-size:.93rem}

/* leaders */
.leaders{display:grid;gap:14px}
.leader{border:1px solid rgba(255,255,255,.14);border-radius:18px;padding:22px;background:rgba(255,255,255,.04)}
.leader .g{font-size:.68rem;letter-spacing:.2em;text-transform:uppercase;color:#7f9dff}
.leader h4{margin:8px 0 2px;color:#fff;font-size:1.3rem;font-weight:700;letter-spacing:-.02em}
.leader .yr{font-size:.85rem;color:#9fc0ff;font-variant-numeric:tabular-nums;margin-bottom:10px}
.leader p{margin:0;font-size:.92rem;color:rgba(255,255,255,.68)}

/* footer */
.footer{background:#02061a;color:rgba(255,255,255,.55);padding:52px 0 60px}
.foot-inner{max-width:var(--wrap);margin:0 auto;padding:0 20px}
.disclaim{font-size:.82rem;max-width:52ch;margin:0 0 22px}
.sources{list-style:none;margin:0;padding:22px 0 0;border-top:1px solid rgba(255,255,255,.12);display:grid;gap:10px}
.sources a{color:#9fc0ff;text-decoration:none;font-size:.86rem}
.sources a:hover{text-decoration:underline}

@media(min-width:640px){
  .strip-row{grid-template-columns:repeat(3,1fr)}
  .product-grid{grid-template-columns:repeat(2,1fr)}
  .principles{grid-template-columns:repeat(2,1fr)}
  .chapter{padding:34px 32px}
  .section{padding:88px 20px}
}
@media(min-width:960px){
  .strip-row{grid-template-columns:repeat(6,1fr)}
  .hero-inner{padding:72px 20px 78px}
  .product-grid{grid-template-columns:repeat(3,1fr)}
  .leaders{grid-template-columns:repeat(3,1fr)}
  .chapter{padding:44px 46px}
  .ch-n{font-size:3.4rem}
  .ledger li{grid-template-columns:74px 1fr}
  .logo-oval{width:300px;height:72px}
  .logo-oval span{font-size:1.55rem}
}
@media(prefers-reduced-motion:reduce){
  *{transition:none!important;scroll-behavior:auto}
  .chapter{opacity:1;transform:none}
}