/* ═══════════════════════════════════════════
   About Page — 공통 리셋
   ═══════════════════════════════════════════ */
body {
  font-family: 'Pretendard', -apple-system, sans-serif;
  background: #fff;
  color: #000;
  min-width: 1920px;
  overflow-x: auto;
  opacity: 0;
  animation: abPageIn 0.55s cubic-bezier(0.22, 1, 0.36, 1) 0.05s forwards;
}

@keyframes abPageIn {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* 스크롤 리빌 */
.ab-reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.85s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.85s cubic-bezier(0.22, 1, 0.36, 1);
}
.ab-reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ═══════════════════════════════════════════
   Section 1 — Hero  (720px, white)
   ═══════════════════════════════════════════ */
#ab-hero {
  position: relative;
  width: 1920px;
  height: 720px;
  background: #fff;
  overflow: hidden;
}

/* 로고  left:71  top:42  173×65 */
.ab-logo {
  position: absolute;
  left: 71px; top: 42px;
  width: 173px; height: 65px;
  display: block;
}
.ab-logo img 
{ width: 100%; height: 100%; object-fit: contain; object-position: left; filter: brightness(0);
}

/* 네비  left:827  top:74  gap:100 */
.ab-nav {
  position: absolute;
  left: 827px; top: 74px;
  display: flex;
  align-items: center;
  gap: 100px;
  z-index: 2;
}
.ab-nav a {
  font-size: 18px;
  font-weight: 500;
  color: #000;
  white-space: nowrap;
  text-decoration: none;
  transition: color 0.2s;
}
.ab-nav a:hover,
.ab-nav a:first-child { color: #00c2ff; }

/* 헤드라인  left:231  top:292  72px medium */
.ab-headline {
  position: absolute;
  left: 231px; top: 292px;
  font-size: 72px;
  font-weight: 500;
  color: #000;
  line-height: 1.3;
  letter-spacing: -0.02em;
}

/* 그룹 소개 + 화살표  left:233  top:483 */
.ab-group-intro {
  position: absolute;
  left: 233px; top: 483px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 400;
  color: #000;
  cursor: default;
}
.ab-intro-arrow {
  width: 10px; height: 10px;
  display: block;
}

/* ═══════════════════════════════════════════
   Section 2 — 풀스크린 이미지  (783px)
   ═══════════════════════════════════════════ */
#ab-img {
  position: relative;
  width: 1920px;
  height: 783px;
  overflow: hidden;
}
.ab-img-inner {
  position: absolute;
  left: 0; top: -125px;
  width: 1920px; height: 1031px;
}
.ab-img-inner img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}

/* ═══════════════════════════════════════════
   Section 3 — 기술 설명  (750px)
   ═══════════════════════════════════════════ */
#ab-desc {
  position: relative;
  width: 1920px;
  height: 750px;
  background: #fff;
  overflow: hidden;
}

/* 제목  left:232  top:234  48px bold */
.ab-desc-title {
  position: absolute;
  left: 232px; top: 234px;
  font-size: 48px;
  font-weight: 700;
  color: #000;
  line-height: 1.35;
}

/* 본문  left:232  top:442  20px regular #5d5d5d */
.ab-desc-body {
  position: absolute;
  left: 232px; top: 442px;
  font-size: 20px;
  font-weight: 400;
  color: #5d5d5d;
  line-height: 1.5;
}
.ab-desc-body p + p { margin-top: 1.5em; }

/* ═══════════════════════════════════════════
   Section 4 — Control the Invisible  (1200px)
   ═══════════════════════════════════════════ */
#ab-ctrl {
  position: relative;
  width: 1920px;
  height: 1200px;
  background: #fff;
  overflow: hidden;
}

/* 타이틀  left:232  top:93  144px semibold */
.ab-ctrl-title {
  position: absolute;
  left: 232px; top: 93px;
  font-size: 144px;
  font-weight: 600;
  color: #000;
  line-height: 1;
  white-space: nowrap;
  letter-spacing: -0.03em;
}

/* 원 공통  455×455  top:354 */
.ab-circle {
  position: absolute;
  top: 354px;
  width: 455px; height: 455px;
  border-radius: 300px;
  overflow: hidden;
}

/* 원 1 — 파란색 GST  left:232 */
.ab-c1 {
  left: 232px;
  background: #00c2ff;
}

/* 원 2 — 회색 CONTROL  left:733 */
.ab-c2 {
  left: 733px;
  background: #efefef;
}

/* 원 3 — 회색 FUTURE  left:1234 */
.ab-c3 {
  left: 1234px;
  background: #efefef;
}

/* 로고 inside circle 1  left:141  top:195  173×65 */
.ab-circle-logo {
  position: absolute;
  left: 141px; top: 195px;
  width: 173px; height: 65px;
  object-fit: contain;
}

/* 라벨 inside circle 2,3 */
.ab-circle-label {
  position: absolute;
  left: 181px; top: 212px;
  font-size: 20px;
  font-weight: 400;
  color: #5d5d5d;
  line-height: 1.5;
  white-space: nowrap;
}
.ab-cl3 { left: 189px; }

/* 하단 텍스트 열  top:892  16px medium #5d5d5d */
.ab-ctrl-col {
  position: absolute;
  top: 892px;
  font-size: 16px;
  font-weight: 500;
  color: #5d5d5d;
  line-height: 1.5;
  white-space: nowrap;
}
.ab-ctrl-col p { margin: 0; }
.ab-cc1 { left: 225px; }
.ab-cc2 { left: 733px; }
.ab-cc3 { left: 1234px; }

/* ═══════════════════════════════════════════
   Section 5 — 다크 인용구  (950px, black)
   ═══════════════════════════════════════════ */
#ab-quote {
  position: relative;
  width: 1920px;
  height: 950px;
  background: #000;
  overflow: hidden;
}

/* 텍스트  center:960  top:410  68px regular white */
.ab-quote-text {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: 410px;
  font-size: 68px;
  font-weight: 400;
  color: #fff;
  text-align: center;
  line-height: 1.35;
  white-space: nowrap;
}

/* ═══════════════════════════════════════════
   Section 6 — 역량 그리드  (4 × 875px)
   ═══════════════════════════════════════════ */
#ab-grid {
  width: 1920px;
  background: #fff;
}

/* 각 행 */
.ab-row {
  display: flex;
  width: 1920px;
  height: 875px;
  border-top: 0.5px solid #5d5d5d;
  border-bottom: 0.5px solid #5d5d5d;
  box-sizing: border-box;
}

/* 각 열 */
.ab-col {
  position: relative;
  width: 960px;
  height: 875px;
  overflow: hidden;
  flex-shrink: 0;
}

/* 텍스트 열 */
.ab-col-text {
  background: #fff;
  border-right: 0.5px solid #5d5d5d;
}

/* 텍스트 컨텐츠 컨테이너  left:280  top:330  width:400 */
.ab-row-content {
  position: absolute;
  left: 280px; top: 330px;
  width: 400px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 61px;
  text-align: center;
}

.ab-row-title {
  font-size: 48px;
  font-weight: 700;
  color: #5d5d5d;
  line-height: 1.1;
  width: 100%;
}

.ab-row-desc {
  font-size: 32px;
  font-weight: 400;
  color: #000;
  line-height: 1.5;
  width: 100%;
}

/* ═══════════════════════════════════════════
   Footer  (280px, black)
   — fi-company, fi-addr, fi-tel, fi-fax,
     fi-copy, footer-logo 는 style.css 재사용
   ═══════════════════════════════════════════ */
#ab-footer {
  position: relative;
  width: 1920px;
  height: 280px;
  background: #000;
  overflow: hidden;
}

.ab-footer-rule {
  position: absolute;
  left: 253px; top: 54px;
  width: 1414px;
  height: 2px;
  overflow: visible;
}
.ab-footer-rule {
  width: 1414px; /* 또는 100% */
  height: 1px;
  background-color: rgba(255, 255, 255, 0.2); 
}