.section {
  position: relative;
  min-height: 100vh;
  width: 100%;
  perspective: var(--perspective);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: clamp(72px, 12vh, 140px) clamp(20px, 6vw, 80px);
}

/* ─── HERO ───────────────────────────────────────────────── */
.section--hero {
  background: var(--electric-blue);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 100vh;
}

.hero__content {
  position: relative;
  z-index: 10;
  max-width: 600px;
  flex-shrink: 0;
}

.hero__label {
  margin-top: 12px;
  font-size: 0.68rem;
  letter-spacing: -0.05em;
  color: var(--midnight-blue);
}

.hero__label-sep {
  color: var(--deep-navy);
  margin: 0 8px;
}

.hero__title {
  font-family: var(--font-readfine);
  font-weight: 400;
  color: var(--pure-white);
  font-size: clamp(8rem, 22vw, 22rem);
  line-height: 0.88;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  margin-bottom: -0.06em;
}

.hero__description {
  font-family: var(--font-body);
  color: var(--midnight-blue);
  font-size: clamp(0.88rem, 1.2vw, 1.05rem);
  line-height: 1.7;
  font-weight: 400;
  max-width: 480px;
  margin: 8px auto 0;
}

/* ─── STRATEGY — cyan blue section ─────────────────── */
.section--strategy {
  background: var(--cyan-blue);
  color: var(--pure-white);
  flex-direction: column;
}

.section--strategy .section__title {
  color: var(--pure-white);
}

.section--strategy .section__title.glow-text {
  color: var(--off-white);
  text-shadow: none;
}

/* ─── SHARED SECTION TITLE ───────────────────────────────── */
.section__title {
  font-family: var(--font-readfine);
  font-weight: 400;
  font-size: clamp(3.5rem, 10vw, 10rem);
  color: var(--pure-white);
  text-transform: uppercase;
  letter-spacing: -0.01em;
  line-height: 0.88;
  margin-bottom: clamp(48px, 6vh, 96px);
  text-align: center;
  position: relative;
  z-index: 10;
}

/* ─── PROCESS GRID ───────────────────────────────────────── */
.blueprint-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0px;
  max-width: 1200px;
  width: 100%;
  position: relative;
  z-index: 10;
  border: 1.5px solid rgba(255,255,255,0.08);
}

.blueprint-grid .process-card {
  border-top: 1.5px solid rgba(255,255,255,0.08);
  border-right: 1.5px solid rgba(255,255,255,0.08);
  border-bottom: none;
  border-left: 4px solid var(--pure-white);
}

/* ─── VAULT — electric blue section ─────────────────── */
.section--vault {
  background: var(--electric-blue);
  flex-direction: column;
}

.vault-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  max-width: 1400px;
  width: 100%;
  position: relative;
  z-index: 10;
  align-items: start;
}

/* ─── CTA — cyan blue section ───────────────── */
.section--cta {
  background: var(--cyan-blue);
  text-align: center;
  flex-direction: column;
  min-height: 70vh;
}

.cta__title {
  font-family: var(--font-readfine);
  font-weight: 400;
  font-size: clamp(3.5rem, 10vw, 10rem);
  color: var(--pure-white);
  text-transform: uppercase;
  letter-spacing: -0.01em;
  line-height: 0.88;
  margin-bottom: 48px;
}

.cta__links {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ─── RESPONSIVE ─────────────────────────────────────────── */

/* ── 1200px: vault 3-col ───────────────────────────────── */
@media (max-width: 1200px) {
  .vault-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ── 1024px: blueprint 2-col, hero closer ───────────────── */
@media (max-width: 1024px) {
  .blueprint-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ── 768px: tablet ──────────────────────────────────────── */
@media (max-width: 768px) {
  /* Nav */
  .nav-float             { padding: 16px 20px; }
  .nav-float__links      { gap: 18px; }
  .nav-float__link       { font-size: 0.58rem; }

  /* Hero: stack vertically */
  .section--hero {
    padding-top: clamp(100px, 15vh, 150px);
    padding-bottom: clamp(60px, 10vh, 100px);
  }
  .hero__content  { max-width: 100%; }

  /* Vault */
  .vault-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: auto;
  }
  .vault-cell--featured, .vault-cell--wide { grid-column: span 2; }

  /* Hide excess decoratives */
  .drift-element { display: none; }

  /* Sections: tighter padding */
  .section { padding: clamp(72px, 10vh, 120px) clamp(16px, 5vw, 48px); }
}

/* ── 640px: large phone ─────────────────────────────────── */
@media (max-width: 640px) {
  /* Nav: hide text links, show only logo */
  .nav-float__links { display: none; }
  .nav-float        { padding: 14px 20px; }

  /* Hero title scaling */
  .hero__title {
    font-size: clamp(9rem, 35vw, 15rem);
    margin-bottom: -0.06em;
    margin-top: 8px;
  }
  .hero__description {
    font-size: 0.82rem;
    max-width: 100%;
  }

  /* Section titles */
  .section__title {
    font-size: clamp(2.6rem, 13vw, 5rem);
    margin-bottom: clamp(32px, 5vh, 64px);
  }

  /* CTA */
  .cta__title { font-size: clamp(2.6rem, 12vw, 5rem); }
  .cta__links {
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }
  .cta__link {
    width: 100%;
    max-width: 320px;
    text-align: center;
    padding: 16px 24px;
  }

  /* Blueprint grid 1-col */
  .blueprint-grid { grid-template-columns: 1fr; }

  /* Remove card translateY offsets on mobile */
  .blueprint-grid .process-card,
  .blueprint-grid [style*="transform"] {
    transform: none !important;
  }
  .process-card { padding: 28px 20px 24px; }
  .process-card__number { font-size: 3.5rem; }
  .process-card__title  { font-size: 1.35rem; }

  /* Vault */
  .vault-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: auto;
    gap: 6px;
  }
  .vault-cell--featured { grid-column: span 2; grid-row: span 1; }
  .vault-cell--wide     { grid-column: span 2; }
  .vault-cell--tall     { grid-row: span 1; }

  /* Section padding */
  .section {
    padding: clamp(68px, 10vh, 100px) clamp(14px, 4vw, 28px);
  }

  /* Footer */
  .site-footer { padding: 24px 16px; font-size: 0.55rem; }
}

/* ── 480px: small phone ─────────────────────────────────── */
@media (max-width: 480px) {
  .hero__title {
    font-size: clamp(8rem, 38vw, 12rem);
  }
  .section__title {
    font-size: clamp(2.2rem, 12vw, 3.5rem);
  }
  .cta__title {
    font-size: clamp(2.2rem, 11vw, 3.5rem);
  }
  .vault-grid {
    grid-template-columns: 1fr;
    grid-auto-rows: auto;
    gap: 6px;
  }
  .vault-cell--wide,
  .vault-cell--featured,
  .vault-cell--tall { grid-column: span 1; grid-row: span 1; }

  .section {
    padding: clamp(60px, 9vh, 90px) 14px;
  }
  .cta__link { max-width: 100%; }
}