/* =============================================================
   Section 6 · Class & Mentoring — 환경 강연 & 멘토링
   대상별 프로그램 카드 + 교육 현장 슬라이더 + 협업 CTA
   ============================================================= */

.class { position: relative; background: var(--color-paper); padding: var(--space-24) 0 0; }
.class__inner { max-width: var(--container); margin: 0 auto; padding: 0 var(--space-6); }

.class__head { text-align: center; max-width: 720px; margin: 0 auto var(--space-16); }
.class__label {
  font-size: var(--fs-small); font-weight: var(--fw-bold);
  letter-spacing: .18em; color: var(--color-coral-deep); margin-bottom: var(--space-3);
}
.class__title {
  font-size: clamp(2rem, 4vw, 3rem); font-weight: var(--fw-extra);
  line-height: 1.2; letter-spacing: var(--ls-tight); margin: 0 0 var(--space-5); color: var(--color-ink);
}
.class__copy { font-size: 1.1rem; line-height: var(--lh-body); color: var(--color-subtext); margin: 0; }

/* ---------------- 소제목 ---------------- */
.class__sub { margin: 0 0 var(--space-8); }
.class__sub-en {
  font-size: var(--fs-small); font-weight: var(--fw-bold);
  letter-spacing: .14em; color: var(--color-coral-deep); margin-bottom: var(--space-2);
}
.class__sub-ko { font-size: clamp(1.4rem, 2.4vw, 1.9rem); font-weight: var(--fw-bold);
  letter-spacing: var(--ls-tight); margin: 0; color: var(--color-ink); }

/* ---------------- What I Offer (대상별 카드) ---------------- */
.offer-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6); margin-bottom: var(--space-24);
}
.offer-card {
  display: flex; flex-direction: column;
  background: #fff; border: 1px solid var(--color-line);
  border-radius: var(--radius-lg); padding: var(--space-8) var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.offer-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: transparent; }
.offer-card__icon {
  width: 52px; height: 52px; border-radius: 14px;
  display: grid; place-items: center; margin-bottom: var(--space-5);
  background: var(--color-lime); color: var(--color-ink);
}
.offer-card:nth-child(even) .offer-card__icon { background: var(--color-coral); }
.offer-card__icon svg { width: 28px; height: 28px; }
.offer-card__target {
  font-size: .78rem; font-weight: var(--fw-bold); letter-spacing: .06em;
  color: var(--color-coral-deep); margin-bottom: var(--space-2);
}
.offer-card__title {
  font-size: 1.18rem; font-weight: var(--fw-bold); color: var(--color-ink);
  line-height: 1.3; margin: 0 0 var(--space-3);
}
.offer-card__desc { font-size: .95rem; line-height: 1.6; color: var(--color-subtext); margin: 0 0 var(--space-6); flex: 1; }
.offer-card__btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: var(--space-3) var(--space-4); border-radius: var(--radius-pill);
  font-size: .9rem; font-weight: var(--fw-semibold); text-decoration: none;
  background: var(--color-ink); color: var(--color-paper);
  transition: background-color .2s ease, transform .2s ease;
}
.offer-card__btn svg { width: 15px; height: 15px; transition: transform .2s ease; }
.offer-card__btn:hover { background: #0c130e; }
.offer-card__btn:hover svg { transform: translateX(3px); }

/* ---------------- Track Record (가로 슬라이더) ---------------- */
.track { position: relative; }
.track__head {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: var(--space-6); margin-bottom: var(--space-8);
}
.track__nav { display: flex; gap: var(--space-3); flex: none; }
.track__btn {
  width: 44px; height: 44px; border-radius: 50%;
  border: 1.5px solid var(--color-line); background: #fff; cursor: pointer;
  display: grid; place-items: center; color: var(--color-ink);
  transition: border-color .2s ease, background-color .2s ease;
}
.track__btn:hover { border-color: var(--color-ink); background: var(--color-paper-soft); }
.track__btn svg { width: 20px; height: 20px; }

.track__slider {
  display: flex; gap: var(--space-6);
  overflow-x: auto; scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding: var(--space-2) 0 var(--space-8);
  scrollbar-width: none;
}
.track__slider::-webkit-scrollbar { display: none; }

.snap-card {
  flex: 0 0 clamp(260px, 32vw, 360px);
  scroll-snap-align: start;
  position: relative; aspect-ratio: 3 / 4; border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: var(--shadow-sm);
}
.snap-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.snap-card:hover img { transform: scale(1.05); }
.snap-card__scrim {
  position: absolute; inset: 0;
  background: linear-gradient(transparent 38%, rgba(12,16,12,.86));
}
.snap-card__body { position: absolute; left: 0; right: 0; bottom: 0; padding: var(--space-6); }
.snap-card__tag {
  display: inline-block; font-size: .72rem; font-weight: var(--fw-bold);
  letter-spacing: .04em; color: var(--color-ink); background: var(--color-lime);
  padding: 3px 10px; border-radius: var(--radius-pill); margin-bottom: var(--space-3);
}
.snap-card__quote { font-size: 1.05rem; font-weight: var(--fw-semibold); color: #fff; line-height: 1.4; margin: 0 0 var(--space-2); }
.snap-card__who { font-size: var(--fs-small); color: rgba(255,255,255,.78); margin: 0; }

/* ---------------- 협업 CTA 밴드 ---------------- */
.class__cta {
  margin-top: var(--space-24);
  background: var(--color-ink); color: var(--color-paper);
  position: relative; overflow: hidden;
}
.class__cta::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(60% 80% at 80% 20%, rgba(233,255,112,.16), transparent 60%);
}
.class__cta-inner {
  position: relative; z-index: 1;
  max-width: var(--container); margin: 0 auto; padding: var(--space-24) var(--space-6);
  text-align: center;
}
.class__cta h3 {
  font-size: clamp(1.8rem, 3.6vw, 2.8rem); font-weight: var(--fw-extra);
  line-height: 1.25; letter-spacing: var(--ls-tight); margin: 0 0 var(--space-4);
}
.class__cta h3 .mark { background: linear-gradient(transparent 55%, rgba(233,255,112,.45) 55%); }
.class__cta p { font-size: 1.15rem; color: #C7CFC7; margin: 0 0 var(--space-8); }
.class__cta-actions { display: flex; gap: var(--space-4); justify-content: center; flex-wrap: wrap; }
.cta-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: var(--space-4) var(--space-8); border-radius: var(--radius-pill);
  font-size: 1rem; font-weight: var(--fw-semibold); text-decoration: none;
  transition: transform .2s ease, background-color .2s ease;
}
.cta-btn--lime { background: var(--color-lime); color: var(--on-lime); }
.cta-btn--lime:hover { background: var(--color-lime-deep); transform: translateY(-2px); }
.cta-btn--ghost { background: transparent; color: var(--color-paper); border: 1.5px solid var(--color-line-dark); }
.cta-btn--ghost:hover { border-color: var(--color-lime); color: var(--color-lime); }
.cta-btn svg { width: 18px; height: 18px; }

/* ---------------- Responsive ---------------- */
@media (max-width: 920px) {
  .class { padding-top: var(--space-16); }
  .offer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .offer-grid { grid-template-columns: 1fr; }
  .track__head { flex-direction: column; align-items: flex-start; }
}