/* Section 02 — Philosophy / scroll-developed manifesto and velocity band */

.section-02-philosophy {
  position: relative;
  overflow: hidden;
  padding-top: calc(var(--app-vh, 1vh) * 25);
  background: var(--color-bg);
  color: var(--color-text);
}

.philosophy-sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  border: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--hero-grid-gap);
  padding-inline: var(--hero-gutter);
}

.philosophy-index {
  grid-column: 2 / 5;
  display: flex;
  gap: max(var(--space-xs), calc(8 * var(--fluid)));
  align-items: center;
  color: var(--color-text);
  font-size: max(0.6875rem, calc(11 * var(--fluid)));
  font-weight: 520;
  white-space: nowrap;
}

.philosophy-manifesto {
  grid-column: 3 / 12;
  margin: calc(var(--app-vh, 1vh) * 12) 0 0;
  color: var(--color-text);
  font-family: var(--font-text);
  font-size: clamp(3rem, 5.75vw, 5.5rem);
  font-variation-settings: "wght" 430;
  font-weight: 430;
  letter-spacing: -0.03em;
  line-height: 1.1;
  text-wrap: pretty;
}

/* JS creates two metrically identical print layers; no-JS remains solid Ink. */
.philosophy-manifesto__line-outer {
  position: relative;
  display: block;
}

.philosophy-manifesto__line-outer + .philosophy-manifesto__line-outer {
  margin-top: -0.12em;
}

.philosophy-manifesto__line-dim,
.philosophy-manifesto__line-bright {
  display: block;
  margin: 0;
  padding: 0 0 0.15em;
  color: inherit;
  font: inherit;
  font-kerning: inherit;
  letter-spacing: inherit;
  line-height: inherit;
  text-shadow: none;
}

.philosophy-manifesto__line-dim {
  position: relative;
  color: color-mix(in srgb, var(--color-text) 48%, var(--color-bg));
}

.philosophy-manifesto__line-bright {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  color: var(--color-text);
  will-change: clip-path;
}

.philosophy-audience-label {
  grid-column: 2 / 6;
  margin-top: calc(var(--app-vh, 1vh) * 15);
  color: var(--color-text);
  font-size: max(0.6875rem, calc(11 * var(--fluid)));
  font-weight: 520;
}

.philosophy-marquee {
  display: flex;
  width: 100%;
  margin-top: clamp(var(--space-lg), calc(var(--app-vh, 1vh) * 7), var(--space-xl));
  padding-block: clamp(var(--space-md), 3.25vw, var(--space-lg));
  overflow: hidden;
  white-space: nowrap;
  -webkit-mask-image: linear-gradient(90deg,
    rgba(255, 255, 255, 0) 0%,
    #fff 15%,
    #fff 85%,
    rgba(255, 255, 255, 0) 100%);
  mask-image: linear-gradient(90deg,
    rgba(255, 255, 255, 0) 0%,
    #fff 15%,
    #fff 85%,
    rgba(255, 255, 255, 0) 100%);
}

.philosophy-marquee__list {
  display: inline-flex;
  flex-shrink: 0;
  gap: clamp(var(--space-sm), 1.75vw, var(--space-lg));
  align-items: center;
  padding-right: clamp(var(--space-sm), 1.75vw, var(--space-lg));
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: clamp(3.25rem, 6.65vw, 6.75rem);
  font-weight: 420;
  letter-spacing: -0.052em;
  line-height: 0.9;
  text-transform: uppercase;
  will-change: transform;
}

.philosophy-marquee__orn {
  color: var(--color-text-muted);
  font-family: var(--font-text);
  font-size: 0.28em;
  font-weight: 500;
  letter-spacing: 0;
}

/* A dissolving Bone matte protects the fixed navigation without forming a bar. */
#site-header::before {
  position: fixed;
  z-index: 0;
  top: 0;
  right: 0;
  left: 0;
  height: clamp(5.75rem, 8.5vw, 7.5rem);
  background: linear-gradient(
    to bottom,
    var(--color-bg) 0%,
    var(--color-bg) 48%,
    color-mix(in srgb, var(--color-bg) 88%, transparent) 68%,
    transparent 100%
  );
  content: "";
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-fast) var(--ease-in-out);
}

html.is-philosophy-header-matte #site-header::before {
  opacity: 1;
}

@media (max-width: 767.98px) {
  .section-02-philosophy {
    padding-top: calc(var(--app-vh, 1vh) * 22);
  }

  .philosophy-grid {
    display: block;
  }

  .philosophy-index {
    font-size: 0.6875rem;
  }

  .philosophy-manifesto {
    margin-top: calc(var(--app-vh, 1vh) * 11);
    font-size: clamp(2.5rem, 11.8vw, 3.25rem);
    letter-spacing: -0.042em;
    line-height: 1.06;
  }

  .philosophy-manifesto__line-outer + .philosophy-manifesto__line-outer {
    margin-top: -0.07em;
  }

  .philosophy-audience-label {
    margin-top: calc(var(--app-vh, 1vh) * 14);
    font-size: 0.6875rem;
  }

  .philosophy-marquee {
    margin-top: var(--space-lg);
    padding-block: var(--space-lg);
  }

  .philosophy-marquee__list {
    gap: var(--space-md);
    padding-right: var(--space-md);
    font-size: clamp(2.75rem, 11.5vw, 3.25rem);
  }

  #site-header::before {
    height: 6.75rem;
    background: linear-gradient(
      to bottom,
      var(--color-bg) 0%,
      var(--color-bg) 55%,
      color-mix(in srgb, var(--color-bg) 90%, transparent) 72%,
      transparent 100%
    );
  }
}

@media (prefers-reduced-motion: reduce) {
  .philosophy-manifesto__line-bright,
  .philosophy-marquee__list {
    will-change: auto;
  }

  #site-header::before {
    transition: none;
  }
}