/* =========================
   TWO-COLUMN STEPS — responsive (Ullman / Standard Specifications pattern)
   (Converted from your 2nd snippet to match the 1st snippet’s “fluid spacing + safe gutters” style)
========================= */

/* Optional global base (keep if you want) */
:root{
  --cs-ink:#0f2140;
  --cs-muted:#5f6b7a;

  --st-line: rgba(15,33,64,.55);
  --st-border: rgba(15,33,64,.12);
  --st-shadow: 0 18px 45px rgba(15,33,64,.10);

  /* Pattern: fluid spacing + safe gutters */
  --st-container: 72rem;               /* ~1152px */
  --st-gutter: clamp(1rem, 4vw, 3rem);
  --st-py: clamp(2.75rem, 6vw, 5rem);
}

body{
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  color: var(--cs-ink);
}

/* Contenedor (las líneas quedan “incompletas” por el padding) */
.section{
  position: relative;
  max-width: var(--st-container);
  margin: 0 auto;
  padding-block: var(--st-py);
  padding-inline: var(--st-gutter);
  background: #fff;
}

/* Title (same “big + clean” style used in Standard Specifications) */
.section h2{
  line-height: 1.12;
  text-align: center;
  padding-bottom: clamp(1.25rem, 3vw, 2.25rem);
  font-size: clamp(3rem, 4.5vw, 6rem);
  font-weight: 600;
  max-width: 18ch;
  margin: auto;
  color: #005598;
  text-align: center;
}

/* Rule line */
.rule{
  height: 2px;
  background: var(--st-border);
  border-radius: 999px;
  margin: 0 0 clamp(.9rem, 2.2vw, 1.15rem);
}

/* Rows */
.row{
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: clamp(1.25rem, 6vw, 7.5rem);
  padding-block: clamp(1rem, 2vw, 1.35rem);
}

.row--top{
  border-bottom: 1px solid var(--st-border);
}

/* Step item */
.step{
  display: flex;
  gap: clamp(.75rem, 2vw, 1.25rem);
  align-items: flex-start;
}

/* Number (aligned with the “ss-row” number sizing concept) */
.num{
  min-width: clamp(44px, 6vw, 56px);
  font-size: clamp(1.6rem, 2.4vw, 2.2rem);
  font-weight: 700;
  line-height: 1;
  color: #0b0b0b;
  letter-spacing: 0.02em;
}

/* Text */
.txt{
  margin: .25rem 0 0;
  max-width: 48ch;
  font-size: clamp(.98rem, 1.4vw, 1.05rem);
  line-height: 1.55;
  color: var(--cs-muted);
}

/* =========================
   Responsive
========================= */
@media (max-width: 820px){
  .section{
    padding-inline: clamp(1rem, 4vw, 1.25rem);
  }

  .row{
    grid-template-columns: 1fr;
    column-gap: 0;
    row-gap: clamp(.9rem, 2.6vw, 1.2rem);
  }
}

/* Small phones */
@media (max-width: 360px){
  .section{
    padding-inline: 1rem;
  }
  .section h2{
    max-width: 20ch;
  }
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce){
  .section *{
    transition: none !important;
    animation: none !important;
  }
}

/* =========================================================
   REVEAL ONLY (IntersectionObserver + stagger)
   - Adds ONLY: data-sr-reveal, .sr-item, .is-revealed, delays
========================================================= */
[data-sr-reveal] .sr-item{
  opacity: 0;
  transform: translateY(14px);
  transition:
    opacity 600ms ease,
    transform 700ms cubic-bezier(0.2, 0.65, 0.2, 1);
  transition-delay: var(--sr-delay, 0ms);
  will-change: transform, opacity;
}

[data-sr-reveal].is-revealed .sr-item{
  opacity: 1;
  transform: none;
}

/* Ensure visibility for reduced motion (no “stuck hidden”) */
@media (prefers-reduced-motion: reduce){
  [data-sr-reveal] .sr-item{
    opacity: 1 !important;
    transform: none !important;
  }
}