/* /about/ Page — Option D tokens + 4단계 반응형 (375/768/1100/1280) */
/* 스코프: .about-wrap 하위만 (기존 스킨 CSS 충돌 방지) */

.about-wrap {
  --about-accent: var(--accent-teal, #0d7680);
  --about-accent-2: var(--accent-amber, #e57a00);
  --about-accent-navy: var(--accent-navy, #1e3a5f);
  --about-accent-green: var(--accent-green, #2d7d4f);
  --about-bright: #5EEAD4;
  --about-radius: 12px;
  --about-gap: 24px;
  --about-max: 1200px;

  color: var(--ink-900, #0f172a);
  font-family: 'Noto Sans KR', system-ui, -apple-system, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
.about-wrap *, .about-wrap *::before, .about-wrap *::after { box-sizing: border-box; }
.about-wrap section { padding: 80px 24px; scroll-margin-top: 60px; }
.about-wrap .container { max-width: var(--about-max); margin: 0 auto; }
.about-wrap .section-title { font-size: clamp(1.4rem, 2.5vw, 2rem); color: var(--ink-900, #0f172a); margin: 0 0 .3em; text-align: center; letter-spacing: -.02em; line-height: 1.25; }
.about-wrap .section-sub { color: var(--ink-600, #475569); text-align: center; margin: 0 auto 48px; font-size: 1.02rem; max-width: 680px; }
.about-wrap .section-kicker { display: block; font-size: .85rem; color: var(--about-accent); font-weight: 700; letter-spacing: .1em; text-transform: uppercase; margin: 0 auto .5em; text-align: center; }
.about-wrap h2, .about-wrap h3, .about-wrap h4 { margin: 0 0 .5em; line-height: 1.25; letter-spacing: -.02em; }
.about-wrap p { margin: 0 0 1em; }
.about-wrap img, .about-wrap picture, .about-wrap svg { max-width: 100%; display: block; }
.about-wrap a { color: var(--about-accent); text-decoration: none; }

/* ========== 1. Hero ========== */
.about-wrap .about-hero {
  min-height: 56vh;
  padding: 96px 24px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  text-align: center;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(13,118,128,.85) 0%, rgba(30,58,95,.82) 100%),
    var(--about-accent);
}
.about-wrap .about-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: .35;
  z-index: 0;
}
.about-wrap .about-hero-inner { max-width: 720px; position: relative; z-index: 1; }
.about-wrap .about-hero-kicker {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.3);
  border-radius: 100px;
  font-size: .85rem;
  letter-spacing: .1em;
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}
.about-wrap .about-hero-title {
  font-size: clamp(1.8rem, 4.5vw, 3.2rem);
  font-weight: 800;
  margin: 0 0 .3em;
  color: #fff;
}
.about-wrap .about-hero-title em { font-style: normal; color: var(--about-bright); }
.about-wrap .about-hero-sub { font-size: 1.18rem; color: rgba(255,255,255,.92); margin: 0 0 40px; }
.about-wrap .about-hero-cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.about-wrap .about-btn-primary, .about-wrap .about-btn-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px; border-radius: 8px; font-weight: 700; font-size: 1rem;
  transition: transform .15s; border: none; cursor: pointer; text-decoration: none;
}
.about-wrap .about-btn-primary { background: var(--about-accent-2); color: #fff; }
.about-wrap .about-btn-secondary { background: rgba(255,255,255,.12); color: #fff; border: 1px solid rgba(255,255,255,.4); backdrop-filter: blur(6px); }
.about-wrap .about-btn-primary:hover, .about-wrap .about-btn-secondary:hover { transform: translateY(-2px); }
.about-wrap .about-hero-scroll {
  position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
  color: rgba(255,255,255,.6); font-size: .85rem; letter-spacing: .2em;
  animation: about-bounce 2s infinite;
}
@keyframes about-bounce { 0%,100% { transform: translate(-50%, 0); } 50% { transform: translate(-50%, 8px); } }

/* ========== 2. Stats ========== */
.about-wrap .about-stats { background: var(--accent-teal-soft, #e6f2f3); }
.about-wrap .about-stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; justify-content: center; }
/* 모바일 2-col 5개 항목: 마지막 항목(5번째)을 전체 폭으로 중앙 정렬 */
.about-wrap .about-stats-grid > .about-stat-card:nth-child(5) { grid-column: 1 / -1; max-width: calc(50% - 6px); margin: 0 auto; }
.about-wrap .about-stat-card {
  background: #fff; border-radius: var(--about-radius);
  padding: 24px 16px; text-align: center;
  box-shadow: 0 2px 8px rgba(13,118,128,.08);
  border-top: 3px solid var(--about-accent);
}
.about-wrap .about-stat-num {
  font-size: 2.4rem; font-weight: 800; color: var(--about-accent);
  line-height: 1; display: block; margin-bottom: 8px;
  font-feature-settings: "tnum";
}
.about-wrap .about-stat-label { font-size: .88rem; color: var(--ink-700, #334155); font-weight: 500; }

/* ========== 3. History Timeline ========== */
.about-wrap .about-history { background: #fff; }
.about-wrap .about-timeline {
  max-width: 900px; margin: 0 auto; position: relative;
  padding-left: 0; list-style: none;
}
.about-wrap .about-timeline::before {
  content: ""; position: absolute; left: 120px; top: 0; bottom: 0;
  width: 2px; background: var(--accent-teal-soft, #e6f2f3);
}
.about-wrap .about-timeline-item { position: relative; padding: 0 0 40px 160px; }
.about-wrap .about-timeline-year {
  position: absolute; left: 0; top: 0; width: 100px;
  font-size: 1.6rem; font-weight: 800; color: var(--about-accent);
  font-feature-settings: "tnum"; text-align: right;
}
.about-wrap .about-timeline-item::before {
  content: ""; position: absolute; left: 114px; top: 8px;
  width: 14px; height: 14px; background: var(--about-accent);
  border-radius: 50%; border: 3px solid #fff;
  box-shadow: 0 0 0 2px var(--about-accent);
}
.about-wrap .about-timeline-item h3 { font-size: 1.15rem; color: var(--ink-900, #0f172a); margin-bottom: .4em; }
.about-wrap .about-timeline-item p { color: var(--ink-700, #334155); font-size: .96rem; margin-bottom: .6em; }
.about-wrap .about-timeline-photo {
  width: 100%; max-width: 400px; height: auto;
  margin-top: 12px; border-radius: 8px; overflow: hidden;
}
.about-wrap .about-timeline-photo img { width: 100%; height: 180px; object-fit: cover; }

/* ========== 4. Vision / Mission / Community ========== */
.about-wrap .about-mission { background: var(--ink-900, #0f172a); color: #fff; }
.about-wrap .about-mission .section-title, .about-wrap .about-mission .section-sub { color: #fff; }
.about-wrap .about-mission .section-sub { color: rgba(255,255,255,.7); }
.about-wrap .about-mission .section-kicker { color: var(--about-bright); }

.about-wrap .about-vision-block,
.about-wrap .about-mission-block,
.about-wrap .about-community-block {
  max-width: 860px; margin: 0 auto 32px;
  padding: 36px 32px; border-radius: var(--about-radius);
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.1);
  border-left: 4px solid var(--about-bright);
}
.about-wrap .about-vision-label,
.about-wrap .about-mission-label,
.about-wrap .about-community-label {
  display: inline-block; font-size: .78rem; font-weight: 700;
  letter-spacing: .2em; color: var(--about-bright);
  margin-bottom: 12px;
}
.about-wrap .about-vision-title,
.about-wrap .about-mission-title,
.about-wrap .about-community-title {
  font-size: 1.4rem; color: #fff; margin-bottom: 16px;
  line-height: 1.35;
}
.about-wrap .about-mission p,
.about-wrap .about-mission-block p,
.about-wrap .about-community-block p {
  color: rgba(255,255,255,.85); font-size: .98rem; margin: 0 0 12px;
}
.about-wrap .about-vision-ko { font-size: 1.02rem; color: rgba(255,255,255,.9); margin-bottom: 10px; }
.about-wrap .about-vision-en { font-size: .88rem; color: rgba(255,255,255,.6); margin: 0; font-style: italic; line-height: 1.5; }
.about-wrap .about-vision-block b { color: #fff; font-weight: 700; }
.about-wrap .about-mission-block b,
.about-wrap .about-community-block b { color: var(--about-bright); font-weight: 700; }

.about-wrap .about-mission-block { border-left-color: var(--accent-amber, #e57a00); }
.about-wrap .about-mission-block .about-mission-label { color: var(--accent-amber, #e57a00); }
.about-wrap .about-community-block { border-left-color: var(--accent-green, #2d7d4f); }
.about-wrap .about-community-block .about-community-label { color: #86efac; }

/* ========== 5. Service ========== */
.about-wrap .about-service { background: #fff; }
.about-wrap .about-service-grid { display: grid; grid-template-columns: 1fr; gap: 24px; }
.about-wrap .about-service-card {
  background: #fff; border: 1px solid var(--ink-300, #cbd5e1);
  border-radius: var(--about-radius); overflow: hidden;
  transition: transform .2s, box-shadow .2s;
}
.about-wrap .about-service-card:hover { transform: translateY(-4px); box-shadow: 0 12px 24px rgba(0,0,0,.08); }
.about-wrap .about-service-photo { height: 200px; overflow: hidden; background: var(--accent-teal-soft); }
.about-wrap .about-service-photo img { width: 100%; height: 100%; object-fit: cover; }
.about-wrap .about-service-body { padding: 24px; }
.about-wrap .about-service-body h3 {
  font-size: 1.15rem; color: var(--ink-900, #0f172a); margin-bottom: 8px;
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
}
.about-wrap .about-service-body p { color: var(--ink-600, #475569); font-size: .94rem; margin: 0; }
.about-wrap .about-service-num {
  display: inline-block; padding: 3px 10px;
  background: var(--about-accent); color: #fff;
  border-radius: 100px; font-size: .78rem; font-weight: 700;
  font-feature-settings: "tnum"; letter-spacing: .02em;
}
.about-wrap .about-service-photo-text {
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--accent-teal-soft, #e6f2f3) 0%, #fff 100%);
}
.about-wrap .about-service-icon-big { font-size: 4.5rem; filter: grayscale(.2); }

/* ========== 6. Platform Showcase (v2: 아이콘 기반) ========== */
.about-wrap .about-showcase { background: var(--ink-100, #f1f5f9); }
.about-wrap .about-showcase-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
.about-wrap .about-showcase-card {
  background: #fff; border-radius: var(--about-radius); overflow: hidden;
  border: 1px solid var(--ink-300, #cbd5e1);
  transition: transform .2s, border-color .2s, box-shadow .2s;
  text-decoration: none; display: flex; gap: 16px; align-items: center; padding: 20px;
}
.about-wrap .about-showcase-card:hover {
  transform: translateY(-2px); border-color: var(--about-accent);
  box-shadow: 0 8px 20px rgba(13, 118, 128, .1);
}
.about-wrap .about-showcase-card.about-color-amber { --about-accent: var(--accent-amber, #e57a00); --about-accent-soft: var(--accent-amber-soft, #fef3e7); }
.about-wrap .about-showcase-card.about-color-navy  { --about-accent: var(--accent-navy,  #1e3a5f); --about-accent-soft: var(--accent-navy-soft, #e8ecf1); }
.about-wrap .about-showcase-card.about-color-green { --about-accent: var(--accent-green, #2d7d4f); --about-accent-soft: var(--accent-green-soft, #e7f2ec); }
.about-wrap .about-showcase-icon {
  flex: 0 0 auto; width: 56px; height: 56px;
  border-radius: 14px; background: var(--about-accent-soft, var(--accent-teal-soft));
  display: flex; align-items: center; justify-content: center;
  color: var(--about-accent); transition: background .2s, color .2s;
}
.about-wrap .about-showcase-card:hover .about-showcase-icon {
  background: var(--about-accent); color: #fff;
}
.about-wrap .about-showcase-icon svg { width: 28px; height: 28px; fill: currentColor; }
.about-wrap .about-showcase-body { flex: 1; min-width: 0; }
.about-wrap .about-showcase-body h3 {
  font-size: 1.02rem; margin: 0 0 4px; color: var(--ink-900, #0f172a);
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
}
.about-wrap .about-showcase-badge {
  display: inline-block; padding: 2px 8px;
  background: var(--about-accent-2); color: #fff;
  border-radius: 100px; font-size: .7rem; font-weight: 700; letter-spacing: .02em;
}
.about-wrap .about-showcase-body p { font-size: .86rem; color: var(--ink-600, #475569); margin: 0 0 6px; line-height: 1.5; }
.about-wrap .about-showcase-link { font-size: .82rem; font-weight: 700; color: var(--about-accent); }

/* ========== Stats note ========== */
.about-wrap .about-stats-note { text-align: center; margin-top: 16px; font-size: .8rem; color: var(--ink-500, #64748b); }

/* ========== History Milestones (v2: 숫자 박스) ========== */
.about-wrap .about-milestones {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
  max-width: 900px; margin: 0 auto 40px; padding: 0 0 32px;
  border-bottom: 1px solid var(--ink-300, #cbd5e1);
}
.about-wrap .about-milestone {
  text-align: center; padding: 20px 12px;
  background: linear-gradient(180deg, var(--accent-teal-soft, #e6f2f3) 0%, #fff 100%);
  border-radius: var(--about-radius);
  border: 1px solid var(--ink-300, #cbd5e1);
}
.about-wrap .about-milestone .v {
  display: block; font-size: 1.8rem; font-weight: 800;
  color: var(--about-accent); line-height: 1; margin-bottom: 6px;
  font-feature-settings: "tnum";
}
.about-wrap .about-milestone .l { font-size: .82rem; color: var(--ink-700, #334155); font-weight: 500; }

/* ========== 8. Gallery ========== */
.about-wrap .about-gallery { background: var(--ink-100, #f1f5f9); }
.about-wrap .about-gallery-tabs {
  display: flex; gap: 8px; justify-content: center; flex-wrap: wrap;
  margin-bottom: 32px;
}
.about-wrap .about-gallery-tab {
  padding: 10px 18px; background: #fff; border: 1px solid var(--ink-300, #cbd5e1);
  border-radius: 100px; font-size: .88rem; color: var(--ink-700, #334155);
  cursor: pointer; transition: all .15s; font-weight: 500;
}
.about-wrap .about-gallery-tab.is-active {
  background: var(--about-accent); color: #fff; border-color: var(--about-accent);
}
.about-wrap .about-gallery-pane { display: none; }
.about-wrap .about-gallery-pane.is-active { display: block; }
.about-wrap .about-gallery-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.about-wrap .about-gallery-thumb {
  aspect-ratio: 4/3; border-radius: 8px; overflow: hidden;
  background: var(--ink-300, #cbd5e1); cursor: pointer;
  transition: transform .2s; display: block;
  position: relative; margin: 0;
}
.about-wrap .about-gallery-thumb:hover { transform: scale(1.03); }
.about-wrap .about-gallery-thumb picture,
.about-wrap .about-gallery-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.about-wrap .about-gallery-year {
  position: absolute; right: 8px; bottom: 8px;
  background: rgba(13, 118, 128, .92); color: #fff;
  padding: 3px 10px; border-radius: 100px;
  font-size: .72rem; font-weight: 700;
  font-feature-settings: "tnum"; letter-spacing: .02em;
  backdrop-filter: blur(4px);
}
.about-wrap .about-gallery-tab small { opacity: .7; font-weight: 500; margin-left: 4px; }
.about-wrap .about-gallery-empty {
  padding: 48px 24px; text-align: center; color: var(--ink-500, #64748b);
  grid-column: 1/-1;
}

/* ========== 9. Contact ========== */
.about-wrap .about-contact { background: var(--about-accent); color: #fff; }
.about-wrap .about-contact .section-title, .about-wrap .about-contact .section-sub { color: #fff; }
.about-wrap .about-contact .section-sub { color: rgba(255,255,255,.85); }
.about-wrap .about-contact .section-kicker { color: var(--about-bright); }
.about-wrap .about-contact-grid { display: grid; grid-template-columns: 1fr; gap: 24px; align-items: center; }
.about-wrap .about-contact-info ul { list-style: none; padding: 0; margin: 0; }
.about-wrap .about-contact-info li {
  padding: 16px 0; border-bottom: 1px solid rgba(255,255,255,.18);
  display: flex; gap: 16px; align-items: flex-start;
}
.about-wrap .about-contact-info li:last-child { border: none; }
.about-wrap .about-contact-label {
  min-width: 80px; color: var(--about-bright);
  font-weight: 700; font-size: .9rem;
}
.about-wrap .about-contact-value { flex: 1; font-size: 1.02rem; }
.about-wrap .about-contact-value a { color: #fff; border-bottom: 1px solid rgba(255,255,255,.3); }
.about-wrap .about-contact-map {
  aspect-ratio: 16/11; background: rgba(255,255,255,.1);
  border-radius: var(--about-radius); display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,.5); border: 1px dashed rgba(255,255,255,.3);
}

/* ========== 모바일 섹션 순서 (Contact 삭제 — 7 섹션) ========== */
.about-wrap { display: flex; flex-direction: column; }
.about-wrap .about-hero    { order: 1; }
.about-wrap .about-stats   { order: 2; }
.about-wrap .about-history { order: 3; }
.about-wrap .about-mission { order: 4; }
.about-wrap .about-service { order: 5; }
.about-wrap .about-showcase{ order: 6; }
.about-wrap .about-gallery { order: 7; }

/* ========== 태블릿 768px+ ========== */
@media (min-width: 768px) {
  .about-wrap .about-stats-grid    { grid-template-columns: repeat(5, 1fr); gap: 16px; max-width: 900px; margin: 0 auto; }
  .about-wrap .about-stats-grid > .about-stat-card:nth-child(5) { grid-column: auto; max-width: none; margin: 0; }
  .about-wrap .about-milestones    { grid-template-columns: repeat(4, 1fr); }
  .about-wrap .about-service-grid  { grid-template-columns: repeat(3, 1fr); }
  .about-wrap .about-showcase-grid { grid-template-columns: repeat(2, 1fr); }
  .about-wrap .about-gallery-grid  { grid-template-columns: repeat(3, 1fr); }
}

/* ========== 중간 PC 1100px+ ========== */
@media (min-width: 1100px) {
  .about-wrap .about-stats-grid    { grid-template-columns: repeat(5, 1fr); max-width: 1000px; margin: 0 auto; }
  .about-wrap .about-showcase-grid { grid-template-columns: repeat(2, 1fr); }
  .about-wrap .about-gallery-grid  { grid-template-columns: repeat(4, 1fr); }
}

/* ========== 큰 PC 1280px+ ========== */
@media (min-width: 1280px) {
  .about-wrap section { padding: 96px 24px; }
}

/* ========== 스크롤 fade-in (JS 트리거) ========== */
.about-wrap section { opacity: 0; transform: translateY(20px); transition: opacity .6s, transform .6s; }
.about-wrap section.is-visible { opacity: 1; transform: none; }
.about-wrap .about-hero { opacity: 1; transform: none; } /* Hero는 즉시 표시 */