/* ============================================================
   1.0  TERRA SECUNDUS — CORE SAFETY (No Design)
   ============================================================ */

/* Predictable box model */
*, *::before, *::after {
  box-sizing: border-box;
}

/* Image & media sizing */
img,
svg,
video,
canvas {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Kill phantom header gap; keep first visual block flush */
html,
body {
  margin: 0;
  padding: 0;
}
html body #sp-header + .sticky-header-placeholder {
  height: 0 !important;
  margin: 0 !important;
}

/* Prevent layout from widening due to full-bleed children */
#t4-topbar,
#sp-header,
#t4-header {
  overflow-x: clip;
}


/* ============================================================
   2.0  GENERIC CONTAINER NEUTRALIZATION
   ============================================================ */

.t4-section .sp-row,
.t4-section .row,
.t4-section .t4-container {
  margin: 0;
  padding: 0;
  background: transparent;
}


/* ============================================================
   3.0  UTILITY — CENTERLINE WRAPPER FOR CONTENT BLOCKS
   ============================================================ */

.container-responsive,
.responsive-section {
  width: 100%;
  max-width: 1480px;
  margin-inline: auto;
  padding-inline: clamp(16px, 3vw, 44px);
}