/* ===== SCROLL ANIMATION BASE ===== */
.sa { opacity:0; transition:opacity 0.7s cubic-bezier(0.22,1,0.36,1), transform 0.7s cubic-bezier(0.22,1,0.36,1); }
.sa.sa-up { transform:translateY(40px); }
.sa.sa-left { transform:translateX(-40px); }
.sa.sa-right { transform:translateX(40px); }
.sa.sa-scale { transform:scale(0.93); }
.sa.sa-fade { transform:none; }
.sa.visible { opacity:1; transform:none; }
 
/* 딜레이 */
.sa-d1 { transition-delay:0.1s; }
.sa-d2 { transition-delay:0.2s; }
.sa-d3 { transition-delay:0.3s; }
.sa-d4 { transition-delay:0.4s; }
.sa-d5 { transition-delay:0.5s; }
.sa-d6 { transition-delay:0.6s; }

/* ===== about part1 ===== */
.about .sub-part { padding:150px 0; }
.about .part1 .sub-inner { display:flex; justify-content:space-between; gap:60px; }
 
/* 좌측 텍스트 영역 */
.about .part1-left { flex:1; min-width:0; }
.about .part1-label { display:flex; flex-direction:column; align-items:flex-end; gap:2px; margin-bottom:0; position:absolute; right:0; top:0; }
.about .part1-label-wrap { position:relative; }
.about .part1-label .ko { font-size:var(--fs18); font-weight:700; color:var(--c_base4); line-height:1.2; }
.about .part1-label .en { font-size:var(--fs13); font-weight:400; color:#aaa; letter-spacing:0.1em; line-height:1.2; }
 
/* 제목 */
.about .part1-title { margin-bottom:40px; }
.about .part1-title .line1 { display:block; font-size:var(--fs64); font-weight:800; color:var(--c_base2); line-height:1.15; letter-spacing:-2px; }
.about .part1-title .line2 { display:block; font-size:var(--fs64); font-weight:800; color:var(--c_base4); line-height:1.15; letter-spacing:-2px; }
 
/* 본문 */
.about .part1-desc { border-left:3px solid var(--c_base2); padding-left:20px; }
.about .part1-desc p { font-size:var(--fs18); color:#333; line-height:1.85; word-break:keep-all; }
.about .part1-desc p .point { color:var(--c_base2); font-weight:600; }
 
/* 우측 레이블 */
.about .part1-right { display:flex; flex-direction:column; align-items:flex-end; justify-content:flex-start; gap:4px; flex-shrink:0; }
.about .part1-right .ko { font-size:var(--fs36); font-weight:700; color:var(--c_base4); line-height:1.2; }
.about .part1-right .en { font-size:var(--fs14); font-weight:400; color:#aaa; letter-spacing:0.12em; }
 

 
/* border-left 성장 효과 */
.about .part1-desc { position:relative; border-left:none; padding-left:22px; }
.about .part1-desc::before {
    content:''; position:absolute; left:0; top:0; width:5px; height:100%;
    background:#333; transform-origin:top;
    animation:aboutLineGrow 0.7s cubic-bezier(0.22,1,0.36,1) 0.5s both;
}
 
/* ===== 1199px 이하 ===== */
@media screen and (max-width:1199px) {
    .about .sub-part { padding:80px 30px; }
    .about .part1-title .line1,
    .about .part1-title .line2 { letter-spacing:-1.5px; }
    .about .part1-title { margin-bottom:28px; }
}
 
/* ===== 767px 이하 ===== */
@media screen and (max-width:767px) {
    .about .sub-part { padding:60px 20px; }
    .about .part1 .sub-inner { flex-direction:column-reverse; gap:24px; align-items:flex-start; }
    .about .part1-right { flex-direction:row; gap:8px; align-items:center; }
    .about .part1-right .en::before { content:''; display:inline-block; width:1px; height:12px; background:#ccc; margin-right:8px; vertical-align:middle; }
    .about .part1-title { margin-bottom:20px; }
    .about .part1-title .line1,
    .about .part1-title .line2 { letter-spacing:-1px; }
    .about .part1-desc p { line-height:1.8; }
	.about .part1-desc::before {height:100%;}
}


/* ===== about part2 ===== */
.about .part2 { background:#000 url(/images/company/about-part2_bg.webp) no-repeat center / cover; padding:150px 0; }
.about .part2 .sub-inner { display:flex; flex-direction:column; align-items:center; gap:70px; }
 
/* 타이틀 */
.about .part2-head { text-align:center; }
.about .part2-tit { display:flex; flex-direction:column; align-items:center; gap:10px; }
.about .part2-tit .ko { font-size:var(--fs36); font-weight:700; color:var(--c_base1); line-height:1.2; letter-spacing:-1px; }
.about .part2-tit .en { font-size:var(--fs14); font-weight:400; color:rgba(255,255,255,0.5); letter-spacing:0.25em; line-height:1; }
 
/* 카드 리스트 */
.about .part2-list { display:flex; gap:0; width:100%; }
.about .part2-item { flex:1;}
.about .part2-item:last-child { border-right:none; }
 
/* 카드 */
.about .part2-card {
    display:flex; flex-direction:column; align-items:center; text-align:center;
    padding:50px 30px 0;
    border-top:3px solid rgba(255,255,255,1); border-radius:20px;
    margin:0 20px;
    height:100%;
}
.about .part2-item:first-child .part2-card { margin-left:0; }
.about .part2-item:last-child .part2-card { margin-right:0; }
 
/* 아이콘 */
.about .part2-icon { width:60px; height:60px; display:flex; align-items:center; justify-content:center; margin-bottom:28px; }
.about .part2-icon img { width:100%; height:100%; object-fit:contain; }
 
/* 카드 텍스트 */
.about .part2-name { display:block; font-size:var(--fs22); font-weight:700; color:var(--c_base1); margin-bottom:14px; line-height:1.3; }
.about .part2-txt { font-size:var(--fs16); color:rgba(255,255,255,0.7); line-height:1.8; word-break:keep-all; }

 
/* ===== 1199px 이하 ===== */
@media screen and (max-width:1199px) {
    .about .part2 { padding:80px 30px; }
    .about .part2 .sub-inner { gap:50px; }
    .about .part2-card { padding:40px 20px 0; margin:0 10px; }
    .about .part2-item:first-child .part2-card { margin-left:0; }
    .about .part2-item:last-child .part2-card { margin-right:0; }
}
 
/* ===== 767px 이하 ===== */
@media screen and (max-width:767px) {
    .about .part2 { padding:60px 20px; }
    .about .part2 .sub-inner { gap:36px; }
    .about .part2-list { flex-direction:column; gap:24px; }
    .about .part2-item { border-right:none; }
    .about .part2-card { margin:0; padding:36px 24px 0; }
    .about .part2-icon { width:50px; height:50px; margin-bottom:20px; }
    .about .part2-name { }
    .about .part2-txt {  }
}


/* ===== about part3 ===== */
.about .part3 { padding:150px 0; }
.about .part3 .sub-inner { display:flex; flex-direction:column;}
 
/* 섹션 타이틀 */
.about .part3-head { display:flex; flex-direction:column; gap:6px; padding-bottom:40px; }
.about .part3-tit { font-size:var(--fs36); font-weight:800; color:var(--c_base4); line-height:1.2; }
.about .part3-en { font-size:var(--fs13); font-weight:400; color:#aaa; letter-spacing:0.2em; line-height:1; }
 
/* row 공통 */
.about .part3-row { display:flex; align-items:center; gap:70px; }
.about .part3-row + .part3-row { padding-top:80px; }
 
/* 이미지 */
.about .part3-img { width:50%; border-radius:16px; overflow:hidden; }
.about .part3-img img { width:100%; height:100%; object-fit:cover; display:block; aspect-ratio:7/4; border-radius:16px; }
 
/* 컨텐츠 */
.about .part3-content { flex:1; display:flex; flex-direction:column; gap:36px; }
 
/* 블록 */
.about .part3-block { display:flex; flex-direction:column; gap:10px; }
.about .part3-name { font-size:var(--fs24); font-weight:700; color:var(--c_base3); line-height:1.4; }
.about .part3-desc { font-size:var(--fs18); color:#333; line-height:1.6; word-break:keep-all; }
 
/* 서브 타이틀 목록 - 교통사업 (번호+텍스트+설명 라인형) */
.about .part3-subList { display:flex; flex-direction:column; gap:0; margin-top:4px; }
.about .part3-subItem { display:flex; align-items:flex-start; gap:12px; padding:16px 0; border-bottom:1px solid var(--border1); }
.about .part3-subItem:first-child { border-top:1px solid var(--border1); }
.about .part3-subNum { flex-shrink:0; width:22px; height:22px; border-radius:50%; background:var(--c_base3); display:flex; align-items:center; justify-content:center; font-size:1.1rem; font-weight:700; color:#fff; margin-top:3px; }
.about .part3-subTxt { display:flex; flex-direction:column; gap:4px; }
.about .part3-subName { font-size:var(--fs18); font-weight:600; color:var(--c_base4); line-height:1.5; }
.about .part3-subDesc { font-size:var(--fs16); color:#666; line-height:1.7; word-break:keep-all; }
 
/* 서브 태그 박스 - AI 안전솔루션 (둥근 뱃지형) */
.about .part3-tagList { display:flex; flex-wrap:wrap; gap:10px; margin-top:6px; }
.about .part3-tag { display:inline-flex; align-items:center; padding:10px 20px; border-radius:100px; border:1.5px solid var(--c_base3); font-size:var(--fs15); font-weight:600; color:var(--c_base3); background:#f0f4fb; line-height:1.3; white-space:nowrap; }
 
/* ===== 1199px 이하 ===== */
@media screen and (max-width:1199px) {
    .about .part3 { padding:70px 40px; }
    .about .part3-head { padding-bottom:20px; }
    .about .part3-row { gap:40px; }
    .about .part3-row + .part3-row { padding-top:60px; }
    .about .part3-img { width:50%; }
    .about .part3-img img { aspect-ratio:7/4; }
    .about .part3-content { gap:28px; }
    .about .part3-name { font-size:var(--fs20); }
}
 
/* ===== 767px 이하 ===== */
@media screen and (max-width:767px) {
    .about .part3 { padding:50px 20px; }
    .about .part3-row { flex-direction:column; gap:24px; }
    .about .part3-row + .part3-row { padding-top:40px; }
    .about .part3-row.row2 .part3-img { order:1; }
    .about .part3-row.row2 .part3-content { order:2; }
    .about .part3-row.row4 .part3-img { order:1; }
    .about .part3-row.row4 .part3-content { order:2; }
    .about .part3-img { width:100%; }
    .about .part3-img img { aspect-ratio:16/9; }
    .about .part3-content { gap:20px; }
    .about .part3-name { font-size:var(--fs18); }
    .about .part3-desc { font-size:var(--fs16); }
    .about .part3-subItem { padding:12px 0; }
    .about .part3-subName { font-size:var(--fs16); }
    .about .part3-subDesc { font-size:var(--fs14); }
    .about .part3-tag { font-size:var(--fs14); padding:8px 16px; }
}