.subpage-hero {
  position: relative;
  z-index: 0;
  min-height: 100svh;
  overflow: hidden;
  background: var(--biru-ink);
}

.subpage-hero-bg { position: absolute; inset: 0; z-index: -2; }
.subpage-hero-bg img {
  position: absolute; inset: 0;
  width: 100%; height: 100%; object-fit: cover; filter: var(--img-filter);
  /* Starts invisible (over the dark .subpage-hero background) and fades in
     once loaded — see core/subpage.js's fadeInHeroImg()/setHeroImage(). On a
     tab swap the old image stays in place (also position:absolute, so it
     stacks under the incoming one) until the new one has faded in, then it's
     removed — a crossfade rather than an instant swap. */
  opacity: 0;
  transition: opacity 0.6s var(--ease);
}
.subpage-hero-bg img.is-hero-loaded { opacity: 1; }
.subpage-hero-overlay { position: absolute; inset: 0; z-index: -1; background: var(--overlay); pointer-events: none; }

.subpage-hero-inner {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: calc(100% - var(--gutter) * 2);
  max-width: var(--container);
  text-align: center;
  transition: top 0.6s var(--ease), left 0.6s var(--ease), transform 0.6s var(--ease);
}
/* Reverse vignette: darkens the zone behind eyebrow+h1 for readability,
   moves with .subpage-hero-inner during the center->docked transition.
   closest-side (not farthest-corner) is deliberate — this box is
   wide+short, and farthest-corner's diagonal-based fade left the
   corners visibly opaque instead of fading evenly. */
.subpage-hero-inner::before {
  content: "";
  position: absolute;
  inset: -90px -120px;
  z-index: -1;
  background: radial-gradient(ellipse closest-side at center, rgba(6,11,23,0.6) 0%, rgba(6,11,23,0.32) 45%, rgba(6,11,23,0.08) 75%, transparent 100%);
  filter: blur(16px);
  pointer-events: none;
}
.subpage-hero-inner .eyebrow { justify-content: center; color: #cfe0ff; margin-bottom: 22px; text-shadow: 0 2px 10px rgba(0,0,0,0.6); }
.subpage-hero-inner .eyebrow::before { background: #cfe0ff; opacity: 0.9; }
.subpage-hero-inner h1 { color: #fff; max-width: 22ch; margin-inline: auto; text-shadow: 0 1px 2px rgba(0,0,0,0.5), 0 4px 24px rgba(0,0,0,0.45), 0 12px 48px rgba(0,0,0,0.3); }

.subpage-hero.is-docked .subpage-hero-inner {
  top: calc(100% - 56px);
  left: var(--gutter);
  transform: translate(0, -100%);
  width: auto;
  max-width: 56ch;
  text-align: left;
}
.subpage-hero.is-docked .subpage-hero-inner .eyebrow { justify-content: flex-start; }
.subpage-hero.is-docked .subpage-hero-inner h1 { margin-inline: 0; }

@media (max-width: 760px) {
  .subpage-hero-inner h1 { font-size: clamp(1.9rem, 8vw, 2.3rem); }

  /* Mobile: two resting positions (centered on top, bottom-left once scrolled)
     but the title never travels between them. subpage.js adds .is-swapping to
     fade it out, flips .is-docked while it is invisible, then removes
     .is-swapping to fade it back in at the new spot. Only opacity is ever
     transitioned (top/left/transform/width snap while hidden), so it stays on
     the compositor. Desktop keeps the move above. */
  .subpage-hero-inner {
    will-change: opacity;
    transition: opacity 0.35s var(--ease);
  }
  .subpage-hero.is-swapping .subpage-hero-inner {
    opacity: 0;
    transition-duration: 0.2s;
  }
  .subpage-hero.is-docked .subpage-hero-inner { left: var(--gutter); bottom: 40px; top: auto; transform: none; }

  
  .subpage-hero-inner .eyebrow {
    font-size: 0.62rem;
    letter-spacing: 0.2em;
  }
  .subpage-hero-inner .eyebrow::after {
    content: "";
    width: 28px;
    height: 1px;
    background: #cfe0ff;
    opacity: 0.9;
  }

  .subpage-hero.is-docked .subpage-hero-inner .eyebrow {
    font-size: var(--fs-eyebrow);
    letter-spacing: 0.28em;
  }
  .subpage-hero.is-docked .subpage-hero-inner .eyebrow::after {
    content: none;
  }

}

.subpage-tabs {
  background: var(--bg-3);
  position: relative; 
}

.subpage-tabs::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  height: 28px;
  background: linear-gradient(to bottom, var(--bg-3), var(--bg));
  pointer-events: none;
}

.subpage-tabs-inner { display: flex; justify-content: center; position: relative; }
.subpage-tabs ul {
  list-style: none;
  display: flex;
  overflow-x: auto;
  scrollbar-width: none;
}
.subpage-tabs ul::-webkit-scrollbar { display: none; }
.subpage-tab {
  display: inline-flex;
  align-items: center;
  padding: 20px 22px;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-2);
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.subpage-tab:hover { color: var(--text); }
.subpage-tab.is-active { color: var(--biru-boss); border-bottom-color: var(--biru-boss); }

.subpage-tabs-edge {
  position: absolute;
  top: 0;
  bottom: 0;
  width: clamp(28px, 6vw, 48px);
  z-index: 2;
  border: none;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  line-height: 1;
  color: #fff;
  background: rgba(10, 14, 28, 0.45);
  cursor: pointer;
  opacity: 1;
  transition: opacity var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
.subpage-tabs-edge:hover:not(:disabled) { background: rgba(10, 14, 28, 0.6); }
.subpage-tabs-edge:disabled { opacity: 0; pointer-events: none; cursor: default; }
.subpage-tabs-edge--left { left: 0; }
.subpage-tabs-edge--right { right: 0; }

.subpage-content { --subpage-content-pad-t: 30px; --subpage-content-pad-b: 100px; padding-block: var(--subpage-content-pad-t) var(--subpage-content-pad-b); min-height: 40vh; background: var(--bg); }
.subpage-content-empty { color: var(--text-3); }

.subpage-content.is-loading .subpage-content-inner { opacity: 0.35; transition: opacity 0.15s var(--ease); }
.subpage-content-inner { opacity: 1; transition: opacity 0.25s var(--ease); }

/*
 * Directional slide/crossfade for tab switching (opt-in via nav_menu.tabs_animate_slide,
 * e.g. Manajemen -> Dewan Komisaris/Direksi) — same technique as .lab-testimonial in
 * life-at-biru.css. Content height varies per tab, so the outgoing/incoming pair briefly
 * stack via position:absolute while .subpage-content's own height animates between them
 * (subpage.js sets/clears the inline height); .lab-testimonial instead relies on a fixed
 * track height, which page content generally doesn't have.
 */
.subpage-content.is-animating-tabs {
  position: relative;
  overflow: hidden;
  /*
   * Absolutely positioned children align to the container's padding edge
   * (border-box inner edge), not its content edge — so they'd otherwise sit
   * flush against the container's edges, ignoring both padding-block (top/
   * bottom) AND .container's padding-inline gutter (left/right), and the
   * padding would "pop" back the instant the panel returns to normal flow.
   * Zero both here and give each sliding panel its own matching padding
   * instead, so it travels with the content and stays visually identical
   * throughout the transition.
   */
  padding: 0;
  transition: height var(--dur) var(--ease);
}
.subpage-content.is-animating-tabs > .subpage-content-inner {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  box-sizing: border-box;
  padding-inline: var(--gutter);
  padding-block: var(--subpage-content-pad-t) var(--subpage-content-pad-b);
  transform: translateX(0);
  transition: transform var(--dur) var(--ease);
}

.subpage-content.is-animating-tabs > .subpage-content-inner.is-incoming-right { transform: translateX(100%); transition: none; }
.subpage-content.is-animating-tabs > .subpage-content-inner.is-incoming-left  { transform: translateX(-100%); transition: none; }

.subpage-content.is-animating-tabs > .subpage-content-inner.is-leaving-left  { transform: translateX(-100%); }
.subpage-content.is-animating-tabs > .subpage-content-inner.is-leaving-right { transform: translateX(100%); }

@media (prefers-reduced-motion: reduce) {
  .subpage-content.is-animating-tabs,
  .subpage-content.is-animating-tabs > .subpage-content-inner {
    transition: none;
    transform: translateX(0);
  }
}