body.how-body {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.38), rgba(255, 255, 255, 0.18)),
    radial-gradient(circle at 18% 0, rgba(78, 141, 255, 0.16), transparent 28%),
    radial-gradient(circle at 84% 8%, rgba(255, 112, 61, 0.16), transparent 30%),
    linear-gradient(180deg, #f7f0e3 0%, #efe5d2 100%);
}

body.how-body::before {
  opacity: 0.085;
  background-image:
    linear-gradient(rgba(22, 20, 18, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22, 20, 18, 0.05) 1px, transparent 1px);
  background-size: 18px 18px;
}

.how-shell {
  width: min(100%, 56rem);
  gap: var(--space-5);
}

.how-hero {
  display: grid;
  gap: var(--space-3);
  padding-top: clamp(1rem, 5vh, 3rem);
}

.how-eyebrow {
  margin: 0;
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--muted) 78%, #385ca8);
}

.how-title {
  max-width: 12ch;
  font-size: clamp(2.5rem, 8vw, 5rem);
  line-height: 0.96;
  letter-spacing: -0.055em;
}

.how-dek {
  max-width: 43rem;
  margin: 0;
  font-size: clamp(1rem, 2.2vw, 1.18rem);
  line-height: 1.65;
  color: color-mix(in srgb, var(--ink) 78%, var(--muted));
}

.how-dek code,
.how-rich code,
.how-file-map code,
.how-diagram-caption code {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 0.92em;
  color: #8f2f1f;
  background: rgba(143, 47, 31, 0.08);
  padding: 0.08rem 0.38rem 0.14rem;
  border-radius: 999px;
}

.how-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: center;
  min-height: 1.5rem;
  color: var(--muted);
  font-size: 0.84rem;
  letter-spacing: -0.01em;
}

.how-fact {
  min-width: 10rem;
  transition: opacity 160ms var(--ease-out);
}

.how-fact-secondary {
  min-width: 12.5rem;
}

.how-dot {
  color: rgba(22, 20, 18, 0.22);
}

.how-toolbar {
  display: flex;
  justify-content: flex-end;
}

.how-sections {
  display: grid;
  border-top: 1px solid rgba(22, 20, 18, 0.14);
}

.how-section {
  border-bottom: 1px solid rgba(22, 20, 18, 0.12);
}

.how-section-toggle {
  width: 100%;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.15rem 0;
  border: 0;
  background: transparent;
  text-align: left;
  cursor: pointer;
}

.how-section-title {
  margin: 0;
  max-width: 30rem;
  color: color-mix(in srgb, var(--ink) 90%, #355598);
  font-family: "Fraunces", serif;
  font-size: clamp(1.08rem, 2vw, 1.35rem);
  line-height: 1.18;
  letter-spacing: -0.02em;
}

.how-section-kicker {
  display: block;
  margin-bottom: 0.32rem;
  color: color-mix(in srgb, var(--muted) 84%, #355598);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.how-chevron {
  flex-shrink: 0;
  margin-top: 0.24rem;
  color: var(--muted);
  transition: transform 180ms var(--ease-out);
}

.how-section[data-open="false"] .how-chevron {
  transform: rotate(-90deg);
}

.how-panel {
  display: grid;
  grid-template-rows: 1fr;
  transition: grid-template-rows 220ms var(--ease-out), opacity 180ms var(--ease-out);
}

.how-section[data-open="false"] .how-panel {
  grid-template-rows: 0fr;
  opacity: 0;
}

.how-panel-inner {
  min-height: 0;
  overflow: hidden;
  padding-bottom: 1.4rem;
}

.how-rich {
  display: grid;
  gap: 1rem;
  color: color-mix(in srgb, var(--ink) 86%, #413a31);
  font-size: 0.99rem;
  line-height: 1.72;
}

.how-rich p,
.how-rich ul {
  margin: 0;
}

.how-rich ul {
  padding-left: 1.1rem;
}

.how-rich li + li {
  margin-top: 0.42rem;
}

.how-callout {
  padding: 0.9rem 1rem;
  border: 1px solid rgba(22, 20, 18, 0.1);
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.48);
  box-shadow: 0 10px 24px rgba(80, 58, 28, 0.06);
}

.how-file-map {
  display: grid;
  gap: 0.75rem;
}

.how-file {
  display: grid;
  gap: 0.28rem;
  padding: 0.9rem 1rem;
  border-radius: 1rem;
  border: 1px solid rgba(22, 20, 18, 0.1);
  background: color-mix(in srgb, white 70%, #f0e5d1);
}

.how-file strong {
  font-size: 0.9rem;
  color: var(--ink);
}

.how-file span {
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.55;
}

.how-diagram-button {
  width: 100%;
  margin-top: 0.25rem;
  padding: 0.95rem 1rem 0.8rem;
  border: 1px solid rgba(22, 20, 18, 0.12);
  border-radius: 1.1rem;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(255, 255, 255, 0.44));
  cursor: zoom-in;
  text-align: left;
  box-shadow: 0 14px 28px rgba(80, 58, 28, 0.08);
  transition: transform 180ms var(--ease-out), box-shadow 180ms var(--ease-out);
}

.how-diagram-button:hover,
.how-diagram-button:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 18px 34px rgba(80, 58, 28, 0.12);
}

.how-diagram-svg {
  width: 100%;
  display: block;
}

.how-diagram-meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 0.75rem;
  font-size: 0.75rem;
  line-height: 1.45;
}

.how-diagram-caption {
  color: var(--muted);
}

.how-diagram-cta {
  color: color-mix(in srgb, var(--ink) 78%, #355598);
  white-space: nowrap;
}

.how-footer {
  display: grid;
  gap: 0.75rem;
  padding-top: 1rem;
}

.how-footer-note {
  margin: 0;
  color: rgba(22, 20, 18, 0.48);
  font-size: 0.76rem;
  line-height: 1.55;
}

.how-lightbox[hidden] {
  display: none;
}

.how-lightbox {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: grid;
  place-items: center;
  padding: 1rem;
}

.how-lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 14, 18, 0.7);
  backdrop-filter: blur(5px);
}

.how-lightbox-panel {
  position: relative;
  z-index: 1;
  width: min(64rem, 100%);
  max-height: min(88vh, 58rem);
  overflow: auto;
  padding: 1rem;
  border-radius: 1.2rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: #17151a;
  color: #ece7df;
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.36);
}

.how-lightbox-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.9rem;
}

.how-lightbox-title {
  margin: 0;
  font-family: "Fraunces", serif;
  font-size: 1.2rem;
}

.how-lightbox-caption {
  margin: 0.35rem 0 0;
  color: rgba(236, 231, 223, 0.74);
  font-size: 0.84rem;
  line-height: 1.55;
}

.how-close-button {
  width: 2.2rem;
  height: 2.2rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: #ece7df;
  cursor: pointer;
  font-size: 1.2rem;
  line-height: 1;
}

.how-lightbox-content {
  overflow-x: auto;
}

.how-lightbox-content .how-diagram-svg {
  min-width: 42rem;
}

@media (min-width: 42rem) {
  .how-shell {
    gap: 1.75rem;
  }

  .how-rich {
    font-size: 1.02rem;
  }
}

@media (max-width: 41.99rem) {
  .how-fact,
  .how-fact-secondary {
    min-width: 0;
  }

  .how-diagram-meta {
    flex-direction: column;
  }

  .how-lightbox-panel {
    padding: 0.9rem;
  }

  .how-lightbox-content .how-diagram-svg {
    min-width: 34rem;
  }
}