/* Page grid: app shell fills the viewport; sections stack in one column. */
bsf-app {
  display: grid;
  grid-template-rows: auto;
  min-height: 100vh;
}

bsf-hero,
bsf-mission,
bsf-about,
bsf-system,
bsf-highlights,
bsf-paths,
bsf-scale {
  display: block;
}

.hero {
  min-height: 100vh;
  background: var(--black);
  overflow: hidden;
}

.hero__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(18rem, 52vw);
  align-items: stretch;
  min-height: 100vh;
}

.hero__stage {
  position: relative;
  z-index: 1;
  display: grid;
  align-content: center;
  justify-items: start;
  gap: var(--space-4);
  padding: var(--space-6) var(--space-4);
  background:
    linear-gradient(90deg, var(--black) 72%, transparent 100%),
    repeating-linear-gradient(
      -12deg,
      transparent,
      transparent 11px,
      rgba(255, 255, 255, 0.015) 11px,
      rgba(255, 255, 255, 0.015) 12px
    ),
    var(--black);
}

.hero__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--link);
  animation: hero-rise var(--dur-med) var(--ease-out) both;
}

.hero__figure {
  margin: 0;
  position: relative;
  display: grid;
  min-height: 100%;
  animation: hero-rise var(--dur-med) var(--ease-out) 60ms both;
}

.hero__photo {
  width: 100%;
  height: 100%;
  min-height: 100%;
  object-fit: cover;
  object-position: 52% 42%;
  display: block;
}

.hero__credit {
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  margin: 0;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  line-height: 1.45;
  color: var(--paper);
  background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.82));
}

.hero__credit a {
  color: var(--link);
}

.hero__brand {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(3.25rem, 14vw, 8rem);
  letter-spacing: -0.03em;
  text-transform: uppercase;
  color: var(--white);
  animation: hero-rise var(--dur-med) var(--ease-out) both;
}

.hero__brand-black {
  display: block;
  color: var(--white);
}

.hero__brand-rest {
  display: block;
  color: var(--mist);
  font-size: 0.42em;
  letter-spacing: 0.08em;
  margin-top: 0.35em;
}

.hero__lede {
  max-width: 28rem;
  color: var(--mist);
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  animation: hero-rise var(--dur-med) var(--ease-out) 80ms both;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  animation: hero-rise var(--dur-med) var(--ease-out) 140ms both;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.35rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  border: 1px solid var(--white);
  transition:
    background var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out);
}

.btn--solid {
  background: var(--white);
  color: var(--black);
}

.btn--solid:hover {
  background: transparent;
  color: var(--white);
}

.btn--ghost {
  background: transparent;
  color: var(--white);
}

.btn--ghost:hover {
  background: var(--white);
  color: var(--black);
}

.band {
  padding: var(--space-6) var(--space-4);
  border-top: 1px solid var(--ash);
}

.band__inner {
  display: grid;
  gap: var(--space-4);
  max-width: var(--page-max);
  margin-inline: auto;
}

.band__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.band__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--white);
}

.band__copy strong {
  color: var(--paper);
  font-weight: 600;
}

.band--mission {
  background: var(--ink);
}

.band--about {
  background: var(--black);
}

.band--highlights {
  background: var(--ink);
}

.band--system {
  background: var(--black);
}

.system-diagram__lede {
  max-width: var(--measure);
  margin: 0;
  color: var(--mist);
}

.system-diagram {
  margin: var(--space-2) 0 0;
  display: grid;
  gap: var(--space-3);
}

.system-diagram__grid {
  display: grid;
  gap: var(--space-3);
  align-items: stretch;
}

.system-diagram__col {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-4);
  border: 1px solid var(--ash);
  background:
    repeating-linear-gradient(
      -12deg,
      transparent,
      transparent 11px,
      rgba(255, 255, 255, 0.015) 11px,
      rgba(255, 255, 255, 0.015) 12px
    ),
    var(--ink);
}

.system-diagram__col--process {
  background: var(--ink-raised);
}

.system-diagram__icon {
  width: 4rem;
  height: 4rem;
  display: block;
  opacity: 0.95;
}

.system-diagram__heading {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.system-diagram__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--space-2);
  color: var(--mist);
}

.system-diagram__list strong {
  color: var(--paper);
  font-weight: 600;
}

.system-diagram__process {
  margin: 0;
  color: var(--mist);
}

.system-diagram__value {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3.5vw, 1.75rem);
  letter-spacing: -0.01em;
  text-transform: uppercase;
  color: var(--white);
  line-height: 1.15;
}

.system-diagram__hint {
  margin: 0;
  font-size: 0.95rem;
  color: var(--mist);
  line-height: 1.45;
}

.system-diagram__flow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-family: var(--font-display);
  font-size: 1.5rem;
}

.system-diagram__arrow {
  line-height: 1;
}

.system-diagram__caption {
  margin: 0;
  max-width: var(--measure);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.04em;
  line-height: 1.5;
  color: var(--text-muted);
}

.system-diagram__caption .text-link {
  margin-left: var(--space-2);
}

@media (min-width: 52rem) {
  .system-diagram__grid {
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1.1fr) auto minmax(0, 1.2fr);
    gap: var(--space-4);
  }

  .system-diagram__flow {
    min-height: 100%;
  }
}

@media (max-width: 51.99rem) {
  .system-diagram__flow {
    transform: rotate(90deg);
    padding: var(--space-1) 0;
  }
}

.band__stack {
  display: grid;
  gap: var(--space-4);
  max-width: var(--measure);
}

.band__inner--split {
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  align-items: start;
}

.band__copy-block {
  display: grid;
  gap: var(--space-4);
}

.band__figure {
  margin: 0;
  display: grid;
  gap: var(--space-2);
  border: 1px solid var(--ash);
  background: var(--black);
}

.band__figure img {
  width: 100%;
  height: auto;
}

.band__credit {
  margin: 0;
  padding: 0 var(--space-3) var(--space-3);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.04em;
  line-height: 1.45;
  color: var(--text-muted);
}

.band__credit a {
  text-decoration: none;
  border-bottom: 1px solid var(--green-dim);
}

.band__credit a:hover {
  border-bottom-color: var(--link-hover);
}

.band__credit em {
  color: var(--mist);
  font-style: italic;
}

.highlight-spread {
  margin: var(--space-2) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--ash);
}

.highlight-item {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  column-gap: var(--space-4);
  row-gap: var(--space-2);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--ash);
  align-items: start;
}

.highlight-item__visual {
  grid-row: 1 / span 2;
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 4.5rem;
  height: 4.5rem;
  border: 1px solid var(--ash);
  background:
    repeating-linear-gradient(
      -12deg,
      transparent,
      transparent 5px,
      rgba(255, 255, 255, 0.03) 5px,
      rgba(255, 255, 255, 0.03) 6px
    ),
    var(--black);
}

.highlight-item__visual svg {
  display: block;
}

.highlight-item__label {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.5vw, 1.45rem);
  letter-spacing: -0.01em;
  text-transform: uppercase;
  color: var(--white);
}

.highlight-item__note {
  margin: 0;
  max-width: 28rem;
  color: var(--mist);
  font-size: 0.98rem;
}

.highlight-item--map {
  grid-template-columns: 1fr;
  grid-template-rows: auto auto auto;
}

.highlight-item--photo {
  grid-template-columns: minmax(7rem, 11rem) 1fr;
  grid-template-rows: auto auto;
  column-gap: var(--space-4);
}

.highlight-item__shot {
  grid-row: 1 / span 2;
  margin: 0;
  display: grid;
  gap: var(--space-2);
  align-content: start;
  border: 1px solid var(--ash);
  background: var(--black);
}

.highlight-item__shot img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

.highlight-item__map {
  margin: 0;
  display: grid;
  gap: var(--space-2);
  border: 1px solid var(--ash);
  background: var(--black);
}

.highlight-item__map img {
  width: 100%;
  height: auto;
}

.highlight-item__credit {
  margin: 0;
  padding: 0 var(--space-3) var(--space-3);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.04em;
  line-height: 1.45;
  color: var(--text-muted);
}

.highlight-item__credit a {
  text-decoration: none;
  border-bottom: 1px solid var(--green-dim);
}

.highlight-item__credit a:hover {
  border-bottom-color: var(--link-hover);
}

.highlight-item__credit em {
  color: var(--mist);
  font-style: italic;
  text-transform: none;
  letter-spacing: normal;
}

@media (min-width: 52rem) {
  .highlight-spread {
    grid-template-columns: 1fr 1fr;
    column-gap: var(--space-5);
  }

  .highlight-item--map {
    grid-column: 1 / -1;
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.8fr);
    grid-template-rows: auto auto;
    column-gap: var(--space-5);
    align-items: center;
  }

  .highlight-item--map .highlight-item__map {
    grid-row: 1 / span 2;
  }

  .highlight-item--photo {
    grid-column: span 1;
  }
}

.text-link {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--link);
  border-bottom: 1px solid var(--green-dim);
}

.text-link:hover {
  color: var(--link-hover);
  border-color: var(--link-hover);
}

.band--paths {
  background: var(--black);
}

.band--scale {
  background: var(--ink-raised);
}

.path-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--ash);
}

.path-list__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: baseline;
  gap: var(--space-3);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--ash);
  text-decoration: none;
  color: inherit;
  transition: color var(--dur-fast) var(--ease-out);
}

.path-list__item:hover {
  color: var(--white);
}

.path-list__label {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--white);
}

.path-list__hint {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--mist);
  text-align: end;
}

.scale-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--ash);
}

.scale-list li {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: baseline;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--ash);
  color: var(--mist);
  font-size: 1.0625rem;
}

.scale-list a {
  font-family: var(--font-display);
  font-size: 1.125rem;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  text-decoration: none;
}

.scale-list a:hover {
  color: var(--link-hover);
}

@keyframes hero-rise {
  from {
    opacity: 0;
    transform: translateY(0.75rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero__eyebrow,
  .hero__brand,
  .hero__lede,
  .hero__cta,
  .hero__figure {
    animation: none;
  }
}

@media (max-width: 52rem) {
  .hero__layout {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(42vh, 22rem) auto;
  }

  .hero__stage {
    order: 2;
    background:
      linear-gradient(180deg, transparent 0%, var(--black) 12%),
      repeating-linear-gradient(
        -12deg,
        transparent,
        transparent 11px,
        rgba(255, 255, 255, 0.015) 11px,
        rgba(255, 255, 255, 0.015) 12px
      ),
      var(--black);
  }

  .hero__figure {
    order: 1;
    min-height: 42vh;
  }

  .hero__photo {
    min-height: 42vh;
    object-position: center 38%;
  }
}

@media (max-width: 40rem) {
  .path-list__item {
    grid-template-columns: 1fr;
  }

  .path-list__hint {
    text-align: start;
  }

  .band__inner--split {
    grid-template-columns: 1fr;
  }

  .highlight-item--photo {
    grid-template-columns: 1fr;
  }

  .highlight-item--photo .highlight-item__shot {
    grid-row: auto;
    max-width: 18rem;
  }
}