body {
  background:
    radial-gradient(circle at 15% 10%, rgba(108, 99, 255, 0.14), transparent 32rem),
    radial-gradient(circle at 90% 25%, rgba(35, 190, 120, 0.12), transparent 28rem),
    #070b12;
  color: #f4f7fb;
}

.world-hero,
.world-shell {
  width: min(1120px, calc(100% - 2rem));
  margin-inline: auto;
}

.world-hero {
  padding: 1rem 0 4rem;
}

.world-nav {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem 1rem;
  margin-bottom: 4rem;
}

.world-nav a,
.actions a {
  color: inherit;
  text-decoration: none;
}

.eyebrow,
.section-label {
  text-transform: uppercase;
  letter-spacing: .16em;
  font-size: .78rem;
  opacity: .68;
}

h1 {
  max-width: 900px;
  margin: .3rem 0 1.2rem;
  font-size: clamp(3rem, 9vw, 7rem);
  line-height: .92;
  letter-spacing: -.055em;
}

h1 span {
  opacity: .7;
}

.lede {
  max-width: 760px;
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  line-height: 1.4;
}

.north-star {
  max-width: 760px;
  margin-top: 2rem;
  padding-left: 1rem;
  border-left: 3px solid currentColor;
  opacity: .9;
}

.world-shell {
  display: grid;
  gap: 1rem;
  padding-bottom: 5rem;
}

.world-shell section {
  padding: clamp(1.3rem, 4vw, 2.4rem);
  border: 1px solid rgba(255,255,255,.11);
  border-radius: 1.4rem;
  background: rgba(255,255,255,.045);
  backdrop-filter: blur(10px);
}

h2 {
  margin: .3rem 0 1.4rem;
  max-width: 850px;
  font-size: clamp(1.7rem, 4vw, 3rem);
  line-height: 1.05;
  letter-spacing: -.03em;
}

.loop {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .6rem;
  font-size: clamp(1rem, 2.5vw, 1.4rem);
}

.loop span {
  padding: .55rem .8rem;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 999px;
  background: rgba(255,255,255,.05);
}

.loop b {
  opacity: .45;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .8rem;
}

.grid article {
  min-width: 0;
  padding: 1rem;
  border-radius: 1rem;
  background: rgba(255,255,255,.04);
}

.grid h3 {
  margin-top: 0;
}

.grid p,
.agent li,
.fractal p,
.decision p {
  color: rgba(244,247,251,.76);
  line-height: 1.6;
}

.agent ol {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .5rem 2.5rem;
  padding-left: 1.4rem;
}

.big-line {
  font-size: clamp(1.15rem, 2.6vw, 1.6rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 1.5rem;
}

.actions a {
  padding: .75rem 1rem;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: .8rem;
}

.actions .primary {
  background: #f4f7fb;
  color: #070b12;
}

@media (max-width: 760px) {
  .world-hero {
    padding-bottom: 2rem;
  }

  .world-nav {
    margin-bottom: 2.5rem;
  }

  .grid,
  .agent ol {
    grid-template-columns: 1fr;
  }

  .loop {
    gap: .45rem;
  }

  .loop b {
    display: none;
  }
}