/* ============================================================
   05_ STAGE / SCREENS
   ============================================================ */
.stage {
  position: relative;
  display: grid;
  min-height: calc(100svh - 100px);
}
.stage-inner {
  grid-column: 1; grid-row: 1;
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 20px 16px 112px;
}

.screen {
  opacity: 0;
  transition: opacity .25s var(--ease-soft);
  pointer-events: none;
  visibility: hidden;
}
.screen[hidden] { display: none !important; }
.screen.is-active {
  display: block;
  opacity: 1;
  pointer-events: auto;
  visibility: visible;
}

/* ============================================================
   06_ MODUL-HEAD
   ============================================================ */
.module-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--steel-soft);
  margin-bottom: 24px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--steel);
}
.module-head .num   { color: var(--ink); }
.module-head .title { color: var(--ink); }
.module-head .meta  { margin-left: auto; color: var(--steel); display: inline-flex; gap: 8px; align-items: center; }
.module-head .meta .dot { width: 6px; height: 6px; background: var(--steel); display: inline-block; }

/* ============================================================
   07_ HEADLINES & BODY
   ============================================================ */
h1.h-display {
  font-family: var(--font-tight);
  font-weight: 600;
  font-size: clamp(34px, 5.4vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.022em;
  color: var(--ink);
  margin: 0 0 14px;
  max-width: 22ch;
}
.lead {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  color: var(--steel);
  max-width: 60ch;
  margin: 0 0 32px;
}
@media (min-width: 720px) {
  .lead { font-size: 17px; margin-bottom: 40px; }
}
@media (max-width: 640px) {
  .module-head {
    gap: 8px;
    margin-bottom: 14px;
    padding-bottom: 8px;
    font-size: 10px;
  }
  h1.h-display {
    font-size: 30px;
    line-height: 1.02;
    margin-bottom: 8px;
  }
  .lead {
    font-size: 14px;
    line-height: 1.35;
    margin-bottom: 18px;
  }
}

/* Section spacing */
.section { margin-top: 40px; }
@media (min-width: 720px) { .section { margin-top: 56px; } }