/* ==========================================
   ABOUT PAGE STYLE
   (용도: 회사 소개 페이지(about.php) 전용 디자인)
   ========================================== */

/* 효과 및 모바일 반응형은 맨 아래에서 정의 */

/* --- sub-visual 영역 : 상단 메뉴 바 바로 아래 이미지 및 대표 소개 문구) --- */
/* --- sub-visual 공통 스타일 정의 --- */
.sub-visual {
    background: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.4)), url('../img/about/about.webp');
    background-size: cover; 
    background-position: center; 
    background-repeat: no-repeat;

    margin-top: -80px; 
    padding-top: 120px; 
    height: 340px;

    display: flex; 
    align-items: center; 
    justify-content: center; 
    text-align: center;

    color: var(--white); 
    position: relative;
}

/* --- 텍스트 페이드인 효과 및 스타일 정의 --- */
.sub-visual h1, .sub-visual p {
    opacity : 0;
    animation: fadeInDown 0.5s ease-out forwards;
}
.sub-visual h1 {
    font-size: 3rem;
    margin-bottom: 10px;    
    text-shadow: 
        0 2px 5px rgba(0, 0, 0, 0.9),   /* 글자 윤곽을 진하게 */
        0 5px 30px rgba(0, 0, 0, 0.8);  /* 배경과 분리되는 깊은 그림자 */
}
.sub-visual p {
    font-size: 1.2rem;   
    text-shadow: 
        0 2px 4px rgba(0, 0, 0, 0.9), 
        0 4px 15px rgba(0, 0, 0, 0.7);
    opacity: 0; 
}

/* --- 각 섹션 제목 텍스트 스타일 정의 --- */
.section-header { 
    text-align: left;
     margin-bottom: 60px; 
}
.section-header h2 { 
    font-size: 3rem; 
    color: var(--primary-dark);
     margin-bottom: 5px; 
}
.section-header p { 
    font-size: 1.2rem; 
    color: var(--text-light); 
}

/* --- 탭 기능 (섹션 숨김/보임) --- */
/* --- 기본적으로 모든 섹션을 숨김 --- */
#about, #history, #cert, #ci, #recruit, #contact-info {
    display: none;
    animation: none;     
    transform: none;
}

/* --- active 클래스가 붙으면 보임 (JS로 제어) --- */
#about.active, #history.active, #cert.active, #ci.active, #recruit.active, #contact-info.active {
    display: block;
}

/* --- 각 섹션 페이드인 효과 --- */
#about .container, #history .container, #cert .container, #ci .container, #recruit .container, #contact-info .container {
    animation: fadeIn 0.6s ease-out;
    animation-fill-mode: both; /* 애니메이션 끝난 상태 유지 */
}

/* ==========================================
   [1] About US 섹션 스타일
   ========================================== */

/* --- 섹션 배경 설정  --- */
#about {
    position: relative;   
    background: #fcfcfc url('../img/about/bg_about.webp') center center / cover no-repeat fixed;
}

/* --- 배경 오버레이 (가독성 고려) --- */
#about::before {
    content: '';
    position: absolute; 
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    z-index: 1;
}

/* --- 컨텐츠 레이어를 오버레이보다 상단에 위치 --- */
#about .container { 
    position: relative; 
    z-index: 2; 
}

/* --- 섹션 본문 2열 레이아웃 (이미지 / 텍스트) | reverse는 이미지/텍스트 순서 뒤집기 --- */
.about-row {
    display: flex; 
    align-items: center; 
    justify-content: space-between;
    gap: 60px; 
    margin-bottom: 100px;
}
.about-row.reverse { 
    flex-direction: row-reverse;
}

/* --- 이미지 영역 --- */
.about-img { 
    flex: 1; 
    width: 50%; 
}
.about-img .img-box {
    width: 100%; 
    height: 400px;
    background-size: cover; 
    background-position: center;
    border-radius: 12px; 
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
    background-color: #ddd; 
    transition: transform 0.3s ease;
}
.about-row:hover .img-box { 
    transform: translateY(-10px); 
}

/* --- 텍스트 영역 --- */
.about-text { 
    flex: 1; 
    width: 50%; 
    padding: 20px; }
.about-text h3 {
    font-size: 2rem; 
    color: var(--primary-dark); 
    margin-bottom: 25px;
    line-height: 1.4; 
    word-break: keep-all;
}
.about-text p {
    font-size: 1.3rem; 
    color: #555; 
    margin-bottom: 20px;
    line-height: 1.8; text-align: justify;
}

/* --- 최하단 임직원 메시지 박스 --- */
.about-ceo-msg {
    text-align: center;
    background: linear-gradient(rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.9)), url('../img/about/about_bottom.webp');
    background-size: cover; 
    background-position: center;
    background-repeat: no-repeat;
    padding: 30px 20px; 
    border-radius: 20px; 
    margin-top: 50px;
    position: relative; 
    border: 1px solid #eee;
}
.about-ceo-msg .quote-icon {
    font-size: 7rem; 
    color: var(--primary-color); 
    opacity: 0.2;
    font-family: serif; 
    margin-bottom: -20px; 
    line-height: 1;
}
.about-ceo-msg h3 { 
    font-size: 3rem; 
    color: var(--text-main);
    margin-bottom: 30px; }
.about-ceo-msg p {
    font-size: 1.5rem; 
    color: #666; 
    line-height: 1.8;
    max-width: 800px; 
    margin: 0 auto 30px auto;
}
.about-ceo-msg .signature { 
    margin-top: 30px; 
    color: var(--primary-dark); 
    font-size: 1.6rem; 
}

/* ==========================================
   [2] ISNET CI 섹션 스타일
   ========================================== */

/* --- 섹션 배경 설정 --- */
#ci {
    position: relative;
    background: #fcfcfc url('../img/about/bg_ci.jpg') center center / cover no-repeat fixed;
}

/* --- 배경 오버레이 (가독성 고려) --- */
#ci::before {
    content: '';
    position: absolute; 
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    z-index: 1;
}

/* --- 컨텐츠 레이어를 오버레이보다 상단에 위치 --- */
#ci .container { 
    position: relative; 
    z-index: 2; 
}

/* --- CI 설명 통합 박스 (이미지 + 설명) --- */
.ci-unified-box {
    display: flex; 
    background: #fff;
    border: 1px solid #eee; 
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05); 
    margin-bottom: 50px; 
    overflow: hidden;
}

/* --- CI 설명 좌측: 이미지 영역 --- */
.ci-left-pane {
    flex: 1; 
    display: flex; 
    align-items: center; 
    justify-content: center;
    padding: 40px; 
    background-color: #fff;
}
.ci-left-pane img { 
    width: 100%; 
    max-width: 400px; 
    height: auto;
}

/* --- 중앙: 세로 구분선 --- */
.ci-vertical-divider { 
    width: 1px; 
    background-color: #eee; 
    margin: 30px 0; 
}

/* --- 우측: 텍스트 영역 --- */
.ci-right-pane {
    flex: 1.2; 
    padding: 40px 50px;
    display: flex; 
    flex-direction: column; 
    justify-content: center; 
    gap: 40px;
}

/* --- CI 컨셉 및 컬러 코드 설명 --- */
.ci-color-row { 
    display: flex; 
    align-items: center;
    gap: 20px;
}
.ci-info-group h3, .ci-color-row h3 {
    font-size: 1.3rem;
    color: var(--text-main);
    font-weight: 700;
    border-left: 4px solid var(--primary-color);
    padding-left: 15px;
} 
.ci-info-group h3 {
    margin-bottom: 15px;    
}
.ci-info-group p { 
    font-size: 1.05rem; 
    color: #555; 
    line-height: 1.6;
}
.ci-color-row h3 {
    margin: 0;
    white-space: nowrap;
}

/* --- 컬러 코드 설명 : 컬러 바 --- */
.cmyk-bar {
    flex-grow: 1; 
    height: 1.5rem; 
    background-color: #008c95;
    border-radius: 4px; 
    display: flex; 
    align-items: center; 
    justify-content: flex-end; 
    padding-right: 15px;
}
.cmyk-text {
    color: #fff; 
    font-size: 0.8rem; 
    font-weight: 400; 
    letter-spacing: 0.5px; 
    opacity: 0.9;
}

/* --- 하단 이미지 3개 그리드 --- */
.ci-bottom-wrap { 
    display: grid; 
    grid-template-columns: repeat(3, 1fr); 
    gap: 20px;
}
.ci-sub-img {
    background: #fff; 
    padding: 10px; 
    border-radius: 10px;
    box-shadow: 0 5px 10px rgba(0,0,0,0.05); 
    border: 1px solid #eee; 
    overflow: hidden;
}
.ci-sub-img img { 
    width: 100%; 
    height: auto; 
    display: block; 
    transition: transform 0.3s ease;
}
.ci-sub-img:hover img { 
    transform: scale(1.03);
}


/* ==========================================
   [3] History (연혁) 섹션 스타일
   ========================================== */

/* --- 섹션 배경 설정 --- */
#history {
    position: relative;
    background: #fcfcfc url('../img/about/bg_history.webp') center center / cover no-repeat fixed;
}

/* --- 배경 오버레이 (가독성 고려) --- */
#history::before {
    content: ''; 
    position: absolute; 
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 100%;
    background-color: rgba(255, 255, 255, 0.90); 
    z-index: 1;
}

/* --- 컨텐츠 레이어를 오버레이보다 상단에 위치 --- */
#history .container { 
    position: relative; 
    z-index: 2; 
}

/* --- 타임라인 전체 레이아웃 --- */
.history-timeline { 
    max-width: 1000px; 
    margin: 0 auto; 
}

/* --- 대분류 (10년 단위) 블록 --- */
.decade-block { 
    display: flex;
    gap: 50px; 
    margin-bottom: 0; 
}
.decade-title {
    flex: 0 0 120px; 
    text-align: right; 
    font-size: 3rem; 
    font-weight: 900;
    color: #979797; 
    line-height: 1; 
    padding-top: 10px;
}
.timeline-content {
    flex: 1; 
    border-left: 2px solid #e0e0e0; 
    padding-left: 40px; 
    padding-bottom: 60px;
}
.decade-block:last-child .timeline-content { /* 마지막 부분 하단 여백 제거 */
    padding-bottom: 0; 
}

/* --- 중분류 (연도) 블록 --- */
.year-group { 
    margin-bottom: 40px; 
    position: relative; 
}
.year-group::before {
    content: ''; 
    position: absolute; 
    left: -49px; 
    top: 8px;
    width: 12px; 
    height: 12px; 
    background: var(--white);
    border: 3px solid var(--primary-color); 
    border-radius: 50%;
    z-index: 1; 
    box-shadow: 0 0 0 4px #fff;
}
.year-title { 
    font-size: 1.6rem; 
    font-weight: 700; 
    color: var(--primary-dark); 
    margin-bottom: 15px; 
    line-height: 1; 
}

/* --- 소분류(월 + 설명) 블록 --- */
.month-list { 
    list-style: none; 
    padding: 0; 
}
.month-list li {
    display: flex; 
    margin-bottom: 15px; 
    font-size: 1.1rem; 
    line-height: 1.6;
    border-bottom: 1px solid #eee; 
    padding-bottom: 15px; 
    color: var(--text-main);
}
.month-list li:last-child { 
    border-bottom: none; 
    margin-bottom: 0; 
}
.month-list .month { 
    flex-shrink: 0; 
    width: 50px; 
    font-weight: 700; 
    color: var(--primary-color); 
}
.month-list .desc { 
    color: #555; 
}

/* ==========================================
   [4] Certifications (인증) 섹션 스타일 
   ========================================== */

/* --- 섹션 배경 설정 --- */
#cert {
    position: relative;
    background: #fcfcfc url('../img/about/bg_cert.webp') center center / cover no-repeat fixed;
}

/* --- 배경 오버레이 (가독성 고려) --- */
#cert::before {
    content: '';
    position: absolute; 
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 100%;
    background-color: rgba(255, 255, 255, 0.90);
    z-index: 1;
}

/* --- 컨텐츠 레이어를 오버레이보다 상단에 위치 --- */
#cert .container { 
    position: relative; 
    z-index: 2; 
}

/* --- 섹션 구분 (특허 / 인증) 현재 특별한 기능 없음 --- */
.cert-subsection {
    margin-bottom: 0px;
}

/* --- 소제목 스타일 --- (다른 섹션에서도 사용 중) */
.subsection-title {
    font-size: 1.5rem;
    color: var(--primary-dark);
    font-weight: 700;
    border-left: 5px solid var(--primary-color);
    padding-left: 15px;
    margin-bottom: 30px;
}

/* --- 그리드 레이아웃 --- (2열 배치) */
.cert-list-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr); /* 가로 2개씩 배치 */
    gap: 30px;
}

/* --- 개별 아이템 박스 --- */
.cert-item {
    display: flex; /* 이미지와 텍스트 가로 배치 */
    align-items: flex-start;
    background: var(--white);
    padding: 25px;
    border: 1px solid #eee;
    border-radius: 12px;
    transition: 0.3s;
}

/* --- 호버 효과 --- */
.cert-item:hover {
    border-color: var(--primary-color);
    box-shadow: 0 10px 25px rgba(0,0,0,0.08);
    transform: translateY(-5px);
}

/* --- 이미지 자리 (프레임) --- */
.cert-img-placeholder {
    width: 120px;       /* 너비 고정 */
    height: 160px;      /* 높이 고정 (문서 비율) */
    background-color: #f8f8f8;
    border: 1px dashed #ccc;
    border-radius: 4px;
    margin-right: 25px;
    flex-shrink: 0;     /* 찌그러짐 방지 */
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}

/* --- CC 인증 이미지 전용 (가로로 넓어서) --- */
.cert-img-placeholder.cc-img {
    width: 246px;
    height: 160px;
}

/* --- 사용자가 이미지를 넣었을 때 꽉 차게 --- */
.cert-img-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* 비율 유지하며 채움 */
}

/* --- 텍스트 영역 --- */
.cert-text-placeholder {
    flex: 1;
}
.cert-text-placeholder h4 {
    font-size: 1.2rem;
    color: var(--text-main);
    margin-bottom: 10px;
    font-weight: 700;
}
.cert-text-placeholder p {
    font-size: 0.95rem;
    color: #666;
    line-height: 1.6;
    margin: 0;
}

/* --- 특허 / 인증 중간 가로 구분선 --- */
.cert-divider {
    height: 1px;
    background-color: #e0e0e0;
    margin: 60px 0;
}

/* ==========================================
   [5] Recruit (채용) 섹션 스타일
   ========================================== */

/* --- 섹션 배경 설정 --- */
#recruit {
    position: relative;
    background: #fcfcfc url('../img/about/bg_recruit.webp') center 0% / cover no-repeat fixed;
}

/* --- 배경 오버레이 (가독성 고려) --- */
#recruit::before {
    content: '';
    position: absolute; 
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 100%;
    background-color: rgba(255, 255, 255, 0.90);
    z-index: 1;
}

/* --- 컨텐츠 레이어를 오버레이보다 상단에 위치 --- */
#recruit .container { 
    position: relative; 
    z-index: 2; 
}

/* --- 인재 채용 안내 (intro) 부분 --- */
.recruit-intro-modern {
    position: relative;
    max-width: 1000px;
    margin: 0 auto 80px auto;
    text-align: center;
    padding: 20px 0;
}

/* --- 배경 레이어 (투명 녹색 사선 장식) --- */
.intro-bg-layer {
    position: absolute;
    top: -20px; left: 50%;
    width: 80%; height: 100%;
    background: linear-gradient(135deg, rgba(0, 140, 149, 0.03) 0%, rgba(0, 140, 149, 0.08) 100%);
    z-index: -1; /* 글자 뒤로 보냄 */
    border-radius: 30px;
    transform: translateX(-50%) skewY(-2deg); /* 살짝 기울임 효과 */
}

/* --- 상단 헤더 --- */
.intro-header h3 {
    font-size: 2rem;
    color: var(--text-main);
    margin-bottom: 20px;
    line-height: 1.4;
    word-break: keep-all;
}
.intro-header .main-lead {
    font-size: 1.15rem;
    color: #555;
    line-height: 1.8;
    margin-bottom: 50px;
}

/* --- 3단 카드 그리드 --- */
.intro-values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin-bottom: 50px;
}

/* --- 개별 카드 스타일 --- */
.value-card {
    background: #fff;
    padding: 40px 25px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05); /* 부드러운 그림자 */
    border: 1px solid rgba(0,0,0,0.02);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* --- 개별 카드 호버 효과 --- */
.value-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 140, 149, 0.15);
    border-color: rgba(0, 140, 149, 0.3);
}

/* --- 카드 내 아이콘 스타일 --- */
.icon-wrapper {
    width: 70px;
    height: 70px;
    background: #f0fbfc; /* 연한 청록 배경 */
    color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 25px;
    transition: 0.3s;
}

/* --- 카드 호버 시 아이콘 회전 효과 --- */
.value-card:hover .icon-wrapper {
    background: var(--primary-color);
    color: #fff;
    transform: rotateY(180deg); 
}

/* --- 카드 내 텍스트 스타일 --- */
.value-card h4 {
    font-size: 1.25rem;
    color: var(--primary-dark);
    margin-bottom: 15px;
    font-weight: 700;
}
.value-card p {
    font-size: 0.95rem;
    color: #666;
    line-height: 1.6;
    word-break: keep-all;
}

/* --- 하단 강조 메시지 --- */
.intro-footer-msg {
    background: var(--primary-dark);
    color: #fff;
    padding: 30px;
    border-radius: 12px;
    position: relative;
    overflow: hidden;
}

/* --- 하단 메시지 꾸밈 요소 (반투명 원 + 텍스트) --- */
.intro-footer-msg::before {
    content: '';
    position: absolute;
    top: -50%; left: -10%;
    width: 200px; height: 200px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
}
.intro-footer-msg p {
    position: relative;
    z-index: 1;
    font-size: 1.2rem;
    line-height: 1.6;
    margin: 0;
}

/* --- HOW TO JOIN US 아이콘 + 텍스트 디자인 --- */
.recruit-divider {
    text-align: center;
    position: relative;
    margin: -30px 0 60px 0; /* 위쪽 마진을 음수로 주어 인트로와 자연스럽게 연결 */
    z-index: 10;
}
.recruit-divider .line {
    width: 2px; 
    height: 60px; 
    margin: 0 auto;
    background: linear-gradient(to bottom, transparent 0%, var(--primary-color) 100%);
}
.recruit-divider .divider-icon {
    width: 50px; 
    height: 50px; 
    background: var(--white);
    border: 2px solid var(--primary-color); 
    border-radius: 50%;
    color: var(--primary-color); 
    font-size: 1.2rem;
    display: flex; 
    align-items: center; 
    justify-content: center;
    margin: -25px auto 10px auto; /* 라인 끝에 걸치게 배치 */
    box-shadow: 0 0 0 5px #fff, 0 5px 15px rgba(0, 140, 149, 0.2);
    animation: pulseIcon 2s infinite;
}
.recruit-divider .bridge-text {
    font-size: 0.85rem; 
    font-weight: 700; 
    color: var(--primary-color); 
    letter-spacing: 1px;
}

/* --- 모바일 전용 안내 카드 (PC 기본: 숨김) --- */
.recruit-mobile-notice {
    display: none;
    max-width: 1000px;
    margin: 0 auto 70px auto;
    padding: 18px 18px;
    border-radius: 14px;
    border: 1px solid rgba(0, 140, 149, 0.18);
    background: rgba(0, 140, 149, 0.06);
    box-shadow: 0 8px 22px rgba(0,0,0,0.06);
    align-items: center;
    gap: 12px;
}

.recruit-mobile-notice .notice-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: #ffffff;
    border: 1px solid rgba(0,0,0,0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.2rem;
    flex-shrink: 0;
}

.recruit-mobile-notice .notice-text {
    margin: 0;
    font-size: 0.95rem;
    color: var(--text-main);
    line-height: 1.55;
    word-break: keep-all;
}

/* --- 채용 정보 디자인 --- */
.recruit-info-container {
    max-width: 1000px; 
    margin: 0 auto 80px auto;
}
.info-grid {
    display: grid; 
    grid-template-columns: repeat(2, 1fr); 
    gap: 20px;
    margin-bottom: 20px;
}
.info-box {
    background: #fff; 
    padding: 25px;
    border: 1px solid #eee; 
    border-radius: 12px;
    display: flex; 
    align-items: center; 
    gap: 20px;
    transition: 0.3s;
}
.info-box:hover {
    border-color: var(--primary-color);
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    transform: translateX(5px);
}
.info-icon {
    width: 50px; 
    height: 50px; 
    background: #f4fbfc;
    color: var(--primary-dark); 
    border-radius: 10px;
    display: flex; 
    align-items: center; 
    justify-content: center; 
    font-size: 1.5rem;
    flex-shrink: 0;
}
.info-content h4 {
    font-size: 1.1rem; 
    font-weight: 700; 
    color: var(--text-main); 
    margin-bottom: 5px;
}
.info-content p {
    font-size: 0.95rem; 
    color: #555; 
    line-height: 1.4; 
    margin: 0;
}
.info-content .sub { 
    font-size: 0.85rem; 
    color: #888; }
.mail-link a { 
    color: var(--primary-color); 
    text-decoration: underline; 
}
.info-notice { /* 서류 미반환 및 비밀 보장 문구 */
    background: #fff5f5; color: #e74c3c;
    padding: 15px; border-radius: 8px; text-align: center;
    font-size: 0.95rem; border: 1px dashed #e74c3c;
}

/* --- 채용 절차 스타일 --- */
.recruit-process-modern {
    max-width: 1100px; 
    margin: 0 auto;
}
.process-card-wrap {
    display: flex; 
    align-items: center; 
    justify-content: space-between;
    gap: 15px;
}
.proc-card {
    flex: 1;
    background: #fff; 
    border: 1px solid #eee; 
    border-radius: 15px;
    padding: 30px 15px; 
    text-align: center;
    position: relative; 
    transition: 0.3s;
    box-shadow: 0 5px 15px rgba(0,0,0,0.03);
}
.proc-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 15px 30px rgba(0, 140, 149, 0.15);
}
.step-badge {
    position: absolute; 
    top: 15px; 
    left: 50%; 
    transform: translateX(-50%);
    background: #f0f0f0; 
    color: #777; 
    font-size: 0.75rem; 
    font-weight: 700;
    padding: 3px 10px; 
    border-radius: 20px;
}
.proc-card.final .step-badge { 
    background: var(--primary-color); 
    color: #fff; 
}
.icon-circle {
    width: 70px; 
    height: 70px; 
    margin: 15px auto 20px auto;
    background: #fcfcfc; 
    border: 1px solid #eee; 
    border-radius: 50%;
    display: flex; 
    align-items: center; 
    justify-content: center;
    font-size: 1.8rem; 
    color: var(--primary-color); 
    transition: 0.3s;
}
.proc-card:hover .icon-circle {
    background: var(--primary-color); 
    color: #fff; 
    border-color: var(--primary-color);
}
.proc-card h4 {
    font-size: 1.2rem; 
    font-weight: 700; 
    color: var(--text-main); 
    margin-bottom: 10px;
}
.proc-card p {
    font-size: 0.9rem; 
    color: #666; 
    line-height: 1.5; 
    word-break: keep-all; 
    margin: 0;
}
.proc-arrow { 
    color: #ddd; 
    font-size: 1.2rem; 
}

/* ==========================================
   [6] 오시는 길 (지도/연락처) 섹션 스타일
   ========================================== */

/* --- 섹션 배경 설정 --- */
#contact-info {
    position: relative;
    background: #fcfcfc url('../img/about/bg_contact.jpg') center 0% / cover no-repeat fixed;
}

/* --- 배경 레이아웃 (가독성 고려) --- */
#contact-info::before {
    content: '';
    position: absolute; 
    top: 0; 
    left: 0; width: 100%; height: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    z-index: 1;
}

/* --- 컨텐츠 레이어를 오버레이보다 상단에 위치 --- */
#contact-info .container { 
    position: relative; 
    z-index: 2; 
}

/* --- 지도 레이어 (16:9 비율 고정) --- */
.map-responsive-wrap {
    width: 75%; 
    margin: 0 auto 40px auto;
    position: relative; 
    aspect-ratio: 16 / 9;
    background-color: #eee; 
    border-radius: 12px; 
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08); 
    margin-bottom: 40px;
}
.map-responsive-wrap iframe { 
    width: 100%; 
    height: 100%;
    border: none; }

/* --- 구형 브라우저 호환성 --- */
@supports not (aspect-ratio: 16 / 9) {
    .map-responsive-wrap { padding-bottom: 56.25%; height: 0; }
    .map-responsive-wrap iframe { position: absolute; top: 0; left: 0; }
}

/* --- 하단 상세 정보 (주소 / 전화번호 / 교통) 박스 --- */
.contact-details-box {
    background: #fff; 
    border: 1px solid #eee; 
    border-radius: 12px;
    padding: 40px; 
    box-shadow: 0 5px 15px rgba(0,0,0,0.03);
}
.contact-list {
    display: flex; 
    justify-content: space-between; 
    gap: 20px;
    list-style: none; 
    padding: 0; 
    margin: 0;
}
.contact-list li {
    flex: 1; 
    display: flex; 
    align-items: flex-start; 
    gap: 20px;
    border-right: 1px solid #eee; 
    padding-left: 20px;
}
.contact-list li:first-child { /* 주소 박스 왼쪽 여백 삭제 */
    padding-left: 0; 
}
.contact-list li:last-child { /* 교통 박스 오른쪽 선 제거 */
    border-right: none; 
}

/* --- 아이콘 스타일 --- */
.contact-list .icon-area {
    width: 50px; 
    height: 50px; 
    background: #f4fcfc; 
    color: var(--primary-color);
    border-radius: 50%; 
    display: flex; 
    align-items: center; 
    justify-content: center;
    font-size: 1.4rem; 
    flex-shrink: 0;
}
/* --- 텍스트 스타일 --- */
.contact-list .text-area strong {
    display: block; 
    font-size: 0.9rem; 
    color: var(--primary-color); 
    margin-bottom: 8px; 
    letter-spacing: 1px;
}
.contact-list .text-area p {
    font-size: 1.05rem; 
    color: #444; 
    line-height: 1.5; 
    margin: 0; 
    font-weight: 500;
}

/* --- 효과 정의 --- */
/* sub-visual 텍스트 페이드인 효과 (UP->DOWN) */
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-50px); }
    to { opacity: 1; transform: translateY(0); }
}
/* 각 섹션 (About US, ISNET CI 등등) 내부 컨텐츠 페이드인 효과 (DOWN-UP) */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}
/* 인재 채용 섹션 HOW TO JOIN US 아이콘 펄스 효과 */
@keyframes pulseIcon {
    0% { box-shadow: 0 0 0 0 rgba(0, 140, 149, 0.4), 0 0 0 5px #fff; }
    70% { box-shadow: 0 0 0 15px rgba(0, 140, 149, 0), 0 0 0 5px #fff; }
    100% { box-shadow: 0 0 0 0 rgba(0, 140, 149, 0), 0 0 0 5px #fff; }
}


.floating-submenu { display: none; }


/* 모바일 반응형 정의 (통합: About -> CI -> History -> Cert -> Recruit -> Contact) */
@media (max-width: 1024px) {

    /* [0] Mobile Floating Sub Menu (left-bottom / collapsed -> expand) */
    /* PC용 서브 메뉴바: 모바일에서는 숨김 */
    .sub-nav-bar { display: none !important; }

    .floating-submenu {
        display: block;
        position: fixed;
        right: 16px;
        bottom: calc(16px + env(safe-area-inset-bottom));
        z-index: 1200;
        font-family: inherit;
    }

    .floating-submenu .fsm-toggle {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 10px 12px;
        border: 1px solid rgba(0,0,0,0.10);
        border-radius: 999px;
        background: rgba(255,255,255,0.70);
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
        box-shadow: 0 6px 18px rgba(0,0,0,0.12);
        color: var(--text-main);
        cursor: pointer;
    }
    .floating-submenu .fsm-toggle .fsm-label {
        font-size: 0.95rem;
        font-weight: 700;
        line-height: 1;
        white-space: nowrap;
    }
    .floating-submenu .fsm-toggle .fsm-icon {
        font-size: 1.1rem;
        line-height: 1;
        opacity: 0.85;
    }

    .floating-submenu .fsm-panel {
        position: absolute;
        right: 0;
        bottom: calc(100% + 10px);
        width: 130px;
        max-width: calc(100vw - 32px);
        max-height: min(70vh, 520px);
        overflow: auto;
        border: 1px solid rgba(0,0,0,0.10);
        border-radius: 14px;
        background: rgba(255,255,255,0.88);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        box-shadow: 0 10px 30px rgba(0,0,0,0.16);
        display: none;
    }
    .floating-submenu.open .fsm-panel { display: block; }

    .floating-submenu .fsm-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 10px;
        padding: 12px 12px 10px 12px;
        border-bottom: 1px solid rgba(0,0,0,0.08);
    }
    .floating-submenu .fsm-current {
        font-size: 0.9rem;
        font-weight: 800;
        color: var(--primary-color);
        letter-spacing: -0.2px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    .floating-submenu .fsm-close {
        width: 34px;
        height: 34px;
        border-radius: 10px;
        border: 1px solid rgba(0,0,0,0.08);
        background: rgba(255,255,255,0.65);
        cursor: pointer;
        line-height: 1;
        font-size: 1.1rem;
        color: var(--text-main);
    }

    .floating-submenu .fsm-list { padding: 8px; }
    .floating-submenu .fsm-list a {
        display: block;
        padding: 10px 10px;
        border-radius: 10px;
        color: var(--text-main);
        text-decoration: none;
        font-size: 0.95rem;
        font-weight: 700;
        letter-spacing: -0.2px;
        text-align: center;
    }
    .floating-submenu .fsm-list a:hover {
        background: rgba(0,0,0,0.05);
    }
    .floating-submenu .fsm-list a.active {
        background: rgba(0, 140, 149, 0.12);
        color: var(--primary-color);
    }

    .sub-visual {
        display: flex !important;
        
        /* [핵심 1] 상단 패딩 제거: 이것이 없으면 글자가 아래로 쏠립니다 */
        padding-top: 0 !important; 
        padding-bottom: 0 !important;
        
        /* [핵심 2] Flexbox로 가로/세로 강제 중앙 정렬 */
        align-items: center !important;      /* 세로 중앙 */
        justify-content: center !important;  /* 가로 중앙 */
        
        /* 높이 및 배경 설정 */
        height: 200px !important;          /* 고정 높이 해제 */
        margin-top: 70px !important;      /* 헤더 높이만큼만 살짝 내림 (헤더 겹침 방지) */
        
        background-size: cover !important; /* 가로 꽉 채우기 */
        background-position: center center !important;
    }

    /* 컨테이너도 높이를 꽉 채우지 않고 내용물만큼만 잡히게 하여 중앙 정렬 유도 */
    .sub-visual .container {
        height: auto !important;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        padding: 0 !important; /* 컨테이너 자체 패딩도 제거 */
    }

    /* 텍스트 스타일 */
    .sub-visual h1 { 
        font-size: 2rem !important; /* 모바일에서 폰트 크기 조정 */
        line-height: 1.2;
        margin: 0 !important; /* 글자 주변 여백 제거 */
        padding: 0 !important;
        transform: none !important; /* 애니메이션 위치 이동 간섭 제거 */
    }

    /* 불필요한 요소 숨김 */
    #about, #history, #cert, #ci, #recruit, #contact-info { background: none; }
    .sub-visual p { display: none !important; }

    /* [1] About US */
    /* 1) section-header: h2 가운데 정렬, p 숨김 (About 섹션에만 적용) */
    #about .section-header { text-align: center; margin-bottom: 30px; }
    #about .section-header h2 { font-size: 2.0rem; margin-bottom: 50px; }
    #about .section-header p { display: none; }

    /* 레이아웃 */
    .about-row { flex-direction: column; gap: 30px; margin-bottom: 60px; }
    .about-row.reverse { flex-direction: column; }
    .about-img, .about-text { width: 100%; }
    .about-img .img-box { height: 250px; }

    /* 2) about-text: h3 / p 글씨 축소 */
    .about-text h3 { font-size: 1.35rem; line-height: 1.35; }
    .about-text p  { font-size: 0.95rem; line-height: 1.65; }
   
            
    /* 3) about-ceo-msg: 내부 텍스트 전반 축소 */
    .about-ceo-msg { padding: 30px 18px; }
    .about-ceo-msg .quote-icon { font-size: 4.5rem; margin-bottom: -10px; }
    .about-ceo-msg h3 { font-size: 1.25rem; margin-bottom: 18px; line-height: 1.35; }
    .about-ceo-msg p  { font-size: 0.95rem; line-height: 1.65; margin: 0 auto 18px auto; }
    .about-ceo-msg .signature { font-size: 1.0rem; margin-top: 18px; }    

    /* [2] ISNET CI */
    /* 1) 섹션 헤더: h2 중앙정렬, p 숨김 (모바일) */
    #ci .section-header { 
        text-align: center; 
        margin-bottom: 30px; 
    }
    #ci .section-header h2 { font-size: 2.0rem; margin-bottom: 50px; }
    #ci .section-header p { display: none; }
    .ci-unified-box { flex-direction: column; }
    .ci-vertical-divider { width: 100%; height: 1px; margin: 0; }
    .ci-right-pane { padding: 30px; }
    .ci-color-row { flex-direction: column; align-items: flex-start; gap: 10px; }
    .cmyk-bar { width: 100%; }
    #ci .ci-bottom-wrap { display: none; }

    /* [3] History */
    #history .section-header { 
        text-align: center; 
        margin-bottom: 30px; 
    }
    #history .section-header h2 { font-size: 2.0rem; margin-bottom: 0; }
    #history .section-header p { display: none; }
    .decade-block { flex-direction: column; gap: 10px; }
    .decade-title {
        text-align: left; font-size: 2.2rem; color: var(--primary-color);
        padding-bottom: 10px; border-bottom: 2px solid #eee; margin-bottom: 20px;
    }
    .timeline-content { border-left: none; padding-left: 0; padding-bottom: 40px; }
    .year-group::before { display: none; }

    /* [4] Certifications */
    #cert .section-header { 
        text-align: center; 
        margin-bottom: 30px; 
    }
    #cert .section-header h2 { font-size: 1.8rem; margin-bottom: 50px; }
    #cert .section-header p { display: none; }
    .cert-list-grid {
        grid-template-columns: 1fr; /* 모바일은 1열 */
    }

    .cert-divider ~ .cert-subsection .cert-list-grid .cert-item,
    .cert-list-grid .cert-item:nth-child(n+5) {
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: 30px 20px;
    }
    .cert-divider ~ .cert-subsection .cert-list-grid .cert-item .cert-img-placeholder,
    .cert-list-grid .cert-item:nth-child(n+5) .cert-img-placeholder {
        margin-right: 0;
        margin-bottom: 20px;
    }

    .cert-divider ~ .cert-subsection .cert-list-grid .cert-item:nth-last-child(-n+2) {
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: 30px 20px;

    }
    .cert-divider ~ .cert-subsection .cert-list-grid .cert-item:nth-last-child(-n+2) .cert-img-placeholder {
        margin-right: 0;
        margin-bottom: 20px;
    }

    .cert-img-placeholder.cc-img {
        width: 100%;
        max-width: 280px;
        height: auto;
        aspect-ratio: auto;      
    }
     .cert-text-placeholder h4 {
        font-size: 1.2rem;

    }
    .cert-text-placeholder p {
        font-size: 0.9rem;
    }
    .cert-text-placeholder p br {
        display: inline;
    }       

    /* [5] Recruit */
    #recruit .section-header { 
        text-align: center; 
        margin-bottom: 30px; 
    }
    #recruit .section-header h2 { font-size: 2.0rem; margin-bottom: 50px; }
    #recruit .section-header p { display: none; }
    #recruit .intro-header .main-lead { display: none; }
    .intro-values-grid {
        grid-template-columns: 1fr; /* 모바일에서 1열로 변경 */
    }
    .intro-bg-layer {
        width: 100%;
        transform: translateX(-50%) skewY(0); /* 기울임 제거 */
    }
    .intro-header h3 {
        font-size: 1.6rem;
    }

    .info-grid { grid-template-columns: 1fr; }
    .process-card-wrap { flex-direction: column; gap: 30px; }
    .proc-arrow { transform: rotate(90deg); } /* 화살표를 아래로 회전 */
    .recruit-divider { margin-top: 0; }

    /* HOW TO JOIN US 아래 기존 요소는 모바일에서 숨김 */
    .recruit-info-container,
    .recruit-process-modern {
        display: none;
    }

    /* 대신 안내 카드만 노출 */
    .recruit-mobile-notice {
        display: flex;
    }

    /* [6] Contact */
    #contact-info .section-header { 
        text-align: center; 
        margin-bottom: 30px; 
    }
    #contact-info .section-header h2 { font-size: 2.0rem; margin-bottom: 50px; }
    #contact-info .section-header p { display: none; }
    #contact-info .intro-header .main-lead { display: none; }
    .contact-list { flex-direction: column; gap: 30px; }
    .contact-list .text-area p { font-size: 0.95rem; line-height: 1.55; }
    .contact-list .text-area p br { display: inline; }
       
    .contact-list li {
        border-right: none; border-bottom: 1px solid #eee; padding-left: 0; padding-bottom: 30px;
    }
    .contact-list li:last-child { border-bottom: none; padding-bottom: 0; }
        /* [6] Contact */

    /* 지도: contact-details-box와 동일한 폭(=container 100%) */
    .map-responsive-wrap {
        width: 100%;
        margin: 0 0 30px 0;
        aspect-ratio: 4 / 3; /* 폭이 커지면 높이도 자연스럽게 증가 */
    }

    /* aspect-ratio 미지원 브라우저 대응(모바일 전용으로 재정의) */
    @supports not (aspect-ratio: 4 / 3) {
        .map-responsive-wrap { padding-bottom: 75%; height: 0; }
        .map-responsive-wrap iframe { position: absolute; top: 0; left: 0; }
    }

}