/* ============================================
   SECTION 2 — Research-Driven Intro
   File: assets/css/intro.css
   ============================================ */

.ev-intro {
  position: relative;
  padding-top: var(--space-16);
  background: var(--color-white);
  overflow: hidden;
}

/* Faint background pattern (world map / wave from Figma) */
.ev-intro__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0.5;
  pointer-events: none;
  z-index: 0;
}

.ev-intro__inner {
  position: relative;
  z-index: 1;
}

.ev-intro__top {
  display: block;
  margin-bottom: var(--space-12);
  padding-bottom: var(--space-12);
  width: 900px;
}

.ev-intro__title {
  font-family: var(--font-heading);
  font-size: 30px;
  font-weight: var(--fw-semibold);
  color: var(--color-black);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: var(--space-3) 0 26px;
  letter-spacing: 1%;
}
.ev-intro__title .accent { color: var(--color-primary); }

.ev-intro__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.ev-intro__body p {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-body);
  line-height: var(--lh-relaxed);
  margin: 0;
}

.ev-intro__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-primary);
  text-decoration: none;
  margin-top: var(--space-2);
  transition: gap var(--transition-base), color var(--transition-fast);
}
.ev-intro__link svg { transition: transform var(--transition-base); flex-shrink: 0; }
.ev-intro__link:hover { gap: var(--space-3); color: var(--color-primary-dark); }
.ev-intro__link:hover svg { transform: translateX(4px); }

/* 4 Cards */
.ev-intro__cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
}

.ev-intro-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding-top: var(--space-5);
  position: relative;
}

/* Short red dash top border, matching Figma (not full-width) */
.ev-intro-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
}

.ev-intro-card__icon {
  display: block;
  width: 28px;
  height: 28px;
  color: var(--color-primary);
  flex-shrink: 0;
}
.ev-intro-card__icon svg { width: 100%; height: 100%; }

.ev-intro-card__title {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: var(--fw-bold);
  color: var(--color-black);
  margin: 0;
  line-height: 1.25;
}

.ev-intro-card__desc {
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--color-muted);
  line-height: var(--lh-relaxed);
  margin: 0;
}

@media (max-width: 1024px) {
  .ev-intro__cards { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .ev-intro__top { grid-template-columns: 1fr; gap: var(--space-8); margin-bottom: var(--space-10); padding-bottom: var(--space-10); width: 100%;}
  .ev-intro { padding-block: var(--space-16); }
}
@media (max-width: 480px) {
  .ev-intro__cards { grid-template-columns: 1fr; gap: var(--space-8); }
  .ev-intro__top{width: 100%;}
}