* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Pretendard', sans-serif; }
body { background-color: #f9fbff; color: #333; line-height: 1.6; }

/* 2. 공통 레이아웃 */
.section {
    padding: 80px 5%;
    min-height: 50vh; /* 섹션 높이를 화면의 80% 이상으로 유지 */
    display: flex;
    flex-direction: column;
    align-items: center;
}

.sub_wrap_1 {
    width: 1800px;
    margin: 100px auto;
    text-align: center;
    overflow: hidden;
}

.title-area { text-align: center; margin-bottom: 50px; margin-top: 50px; }
.sub-title { color: #0046ff; font-weight: bold; margin-bottom: 10px; display: block; }
.main-title { font-size: 3rem; position: relative;  font-weight: 900; }

/* 3. 카드 그리드 시스템 */
.card-container {
    margin-top: 30px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    width: 100%;
    max-width: 1200px;
}

.case-card {
    background: #e9f2ff;
    border-radius: 24px;
    padding: 30px 40px;
    text-align: center;
    transition: all 0.3s ease;
}

.case-card h3 {
    font-size: 2rem;
    margin: 30px 0 20px;
    font-weight: 800;
    color: #111;
    text-align: left;
    word-break: keep-all;
}

/* 카드 설명 문구 */
.case-card p {
    font-size: 1.25rem;
    color: #444;
    margin-bottom: 12px;
    font-weight: 500;
    text-align: left;
    word-break: keep-all;
    opacity: 0.9;
    position: relative;
    line-height: 1.6;
}

.icon-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;

    /* 배경 및 크기 설정 */
    background-color: #ffffff; /* 흰색 배경 추가 */
    width: 220px;
    height: 220px;
    margin: 0 auto 25px;

    /* 테두리와 모서리 다듬기 */
    border: 1px solid #eee;    /* 배경과 구분되는 연한 테두리 */
    border-radius: 15px;       /* 요청하신 대로 약간의 곡률 */
    overflow: hidden;
    padding: 20px;             /* 이미지와 흰색 배경 사이 여백 */

    /* 입체감을 위한 미세한 그림자 */
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.03);
}

.case-card img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* 5. 기대 효과 카드 (이미지 2 스타일) */
.effect-card {
    background: #fff;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
    border-top: 6px solid #3b82f6;
    transition: transform 0.3s ease;
}
.effect-card img {
    display: block;    /* 이미지를 블록으로 변경 */
    margin: 0 auto;    /* 이미지 자체를 중앙으로 */
    width: 80px;       /* 크기 고정 */
    height: 80px;
    object-fit: contain;
}
.effect-card:hover { transform: translateY(-10px); }

.case-tag { color: #3b82f6; font-weight: bold; font-size: 1.25rem; }
.card-title { font-size: 1.4rem; margin: 15px 0; word-break: keep-all; }

.feature-list { list-style: none; text-align: left; margin-top: 20px; }
.feature-list li {
    position: relative;
    padding-left: 28px;
    margin-bottom: 18px;
    font-size: 1.25rem;
    color: #444;
    line-height: 1.7;
    font-weight: 500;
    word-break: keep-all;
    letter-spacing: -0.5px;
}
.feature-list li::before {
    content: "•"; /* 이미지의 불렛 포인트 재현 */
    position: absolute; left: 0; color: #333; font-size: 1.25rem;
}


/* 이미지 자체 스타일 */
.image_card_box img {
    width: 100%;
    height: auto;
    border-radius: 15px;      /* 이미지 모서리 */
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1); /* 이미지에만 살짝 그림자 */
    border: 1px solid #eee;   /* 경계선 */
    background-color: #fff;   /* 이미지 자체 배경 (이미지가 투명할 경우 대비) */
}

/* 반응형 대응 */
@media (max-width: 768px) {
    .main-title { font-size: 1.8rem; }
    .section { padding: 50px 5%; }
}
/* ============================================
   4. 반응형 - 창모드 대형 (1201px ~ 1440px)
   ============================================ */
@media (max-width: 1440px) {
    .sub_wrap_1 { max-width: 100%; padding: 0 40px; }
    .dashboard-layout .container-fluid { max-width: 100% !important; padding: 0 40px; }

    /* 상단 헤더 */
    .dashboard-layout .text-center > h4[style*="3.5rem"] { font-size: 2.8rem !important; }
    .dashboard-layout .text-center > h3[style*="3rem"] { font-size: 2.4rem !important; }
    .dashboard-layout .text-center > h3[style*="2rem"] { font-size: 1.7rem !important; }
    .dashboard-layout .text-center > p[style*="1.6rem"] { font-size: 1.3rem !important; }
    .dashboard-layout .text-center > .line[style*="440px"] { width: 350px !important; max-width: 90% !important; }
    .dashboard-layout .text-center[style*="margin-bottom:200px"] { margin-bottom: 120px !important; }

    /* Use Case 섹션 */
    .dashboard-layout h3[style*="2.5rem"] { font-size: 2rem !important; }
    .dashboard-layout p[style*="1.75rem"] { font-size: 1.4rem !important; }
    .dashboard-layout ul[style*="1.5rem"] { font-size: 1.2rem !important; }
    .dashboard-layout h3[style*="2.5rem"] img[style*="48px"] { width: 36px !important; height: 36px !important; }

    /* 적용사례/기대효과 섹션 */
    .main-title { font-size: 2.8rem; }
    .section .line[style*="350px"] { width: 280px !important; }
    .effect-card img[style*="150px"] { width: 120px !important; height: 120px !important; }
    .card-title[style*="1.5rem"] { font-size: 1.3rem !important; }
}

/* ============================================
   5. 반응형 - 창모드 중형 (1025px ~ 1200px)
   ============================================ */
@media (max-width: 1200px) {
    .sub_wrap_1 { padding: 0 30px; margin: 60px auto !important; }
    .dashboard-layout .container-fluid { padding: 0 30px; }

    /* 상단 헤더 */
    .dashboard-layout .text-center > h4[style*="3.5rem"] { font-size: 2.2rem !important; }
    .dashboard-layout .text-center > h3[style*="3rem"] { font-size: 1.8rem !important; }
    .dashboard-layout .text-center > h3[style*="2rem"] { font-size: 1.4rem !important; }
    .dashboard-layout .text-center > p[style*="1.6rem"] { font-size: 1.1rem !important; }
    .dashboard-layout .text-center > .line[style*="440px"] { width: 280px !important; }
    .dashboard-layout .text-center[style*="margin-bottom:200px"] { margin-bottom: 80px !important; }
    .dashboard-layout .text-center img[src*="ai02"] { width: 12% !important; min-width: 80px; }

    /* Use Case 섹션 */
    .dashboard-layout .col-md-6 { flex: 0 0 48% !important; max-width: 48% !important; }
    .dashboard-layout h3[style*="2.5rem"] { font-size: 1.7rem !important; }
    .dashboard-layout p[style*="1.75rem"] { font-size: 1.15rem !important; }
    .dashboard-layout ul[style*="1.5rem"] { font-size: 1rem !important; }
    .dashboard-layout h3[style*="2.5rem"] img[style*="48px"] { width: 30px !important; height: 30px !important; margin-left: 8px !important; }
    .dashboard-layout .image_card_box img { border-radius: 12px; }

    /* 적용사례/기대효과 섹션 */
    .main-title { font-size: 2.4rem; }
    .section { padding: 60px 4%; }
    .section .line[style*="350px"] { width: 240px !important; }
    .card-container { gap: 20px; }
    .effect-card img[style*="150px"] { width: 100px !important; height: 100px !important; }
    .card-title[style*="1.5rem"] { font-size: 1.2rem !important; }
    .feature-list li { font-size: 1.1rem; padding-left: 24px; margin-bottom: 14px; }
}

/* ============================================
   6. 반응형 - 태블릿 (769px ~ 1024px)
   ============================================ */
@media (max-width: 1024px) {
    .sub_wrap_1 { padding: 0 20px; margin: 40px auto !important; }
    .dashboard-layout .container-fluid { max-width: 100% !important; padding: 0 20px; }
    .dashboard-layout .sub_wrap_1[style*="margin-top: 150px"] { margin-top: 80px !important; }

    /* 상단 헤더 */
    .dashboard-layout .text-center > h4[style*="3.5rem"] { font-size: 1.8rem !important; }
    .dashboard-layout .text-center > h3[style*="3rem"] { font-size: 1.5rem !important; }
    .dashboard-layout .text-center > h3[style*="2rem"] { font-size: 1.2rem !important; }
    .dashboard-layout .text-center > p[style*="1.6rem"] { font-size: 1rem !important; }
    .dashboard-layout .text-center > .line[style*="440px"] { width: 220px !important; }
    .dashboard-layout .text-center[style*="margin-bottom:200px"] { margin-bottom: 50px !important; }
    .dashboard-layout .text-center img[src*="ai02"] { width: 15% !important; min-width: 70px; }

    /* Use Case 섹션 - 세로 배치 */
    .dashboard-layout .row { flex-direction: column; }
    .dashboard-layout .col-md-6 { flex: 0 0 100% !important; max-width: 100% !important; }
    .dashboard-layout .col-md-6[style*="top: -30px"] { top: 0 !important; position: static !important; }
    .dashboard-layout h3[style*="2.5rem"] { font-size: 1.5rem !important; }
    .dashboard-layout p[style*="1.75rem"] { font-size: 1.05rem !important; }
    .dashboard-layout ul[style*="1.5rem"] { font-size: 0.95rem !important; }
    .dashboard-layout h3[style*="2.5rem"] img[style*="48px"] { width: 26px !important; height: 26px !important; margin-left: 6px !important; }
    .dashboard-layout .main_btn[style*="16px"] { font-size: 14px !important; }

    .dashboard-layout .image_card_box { margin-top: 20px; }

    /* 적용사례/기대효과 섹션 */
    .main-title { font-size: 2rem; }
    .section { padding: 50px 4%; }
    .title-area { margin-bottom: 30px; margin-top: 30px; }
    .section .line[style*="350px"] { width: 200px !important; }
    .card-container { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; }
    .case-card { padding: 40px 30px; }
    .case-card h3 { font-size: 1.6rem; }
    .case-card p { font-size: 1.1rem; }
    .icon-placeholder { width: 130px; height: 130px; }
    .effect-card { padding: 25px; }
    .effect-card img[style*="150px"] { width: 90px !important; height: 90px !important; }
    .card-title[style*="1.5rem"] { font-size: 1.15rem !important; }
    .feature-list li { font-size: 1rem; padding-left: 22px; margin-bottom: 12px; }
    .case-tag { font-size: 1.1rem; }
}

/* ============================================
   7. 반응형 - 모바일 (481px ~ 768px)
   ============================================ */
@media (max-width: 768px) {
    .sub_wrap_1 { padding: 0 15px; margin: 30px auto !important; }
    .dashboard-layout .container-fluid { padding: 0 15px; }
    .dashboard-layout .sub_wrap_1[style*="margin-top: 150px"] { margin-top: 50px !important; }

    /* 상단 헤더 */
    .dashboard-layout .text-center > h4[style*="3.5rem"] { font-size: 1.5rem !important; }
    .dashboard-layout .text-center > h3[style*="3rem"] { font-size: 1.25rem !important; }
    .dashboard-layout .text-center > h3[style*="2rem"] { font-size: 1.1rem !important; }
    .dashboard-layout .text-center > p[style*="1.6rem"] { font-size: 0.95rem !important; }
    .dashboard-layout .text-center > .line[style*="440px"] { width: 180px !important; }
    .dashboard-layout .text-center[style*="margin-bottom:200px"] { margin-bottom: 35px !important; }
    .dashboard-layout .text-center img[src*="ai02"] { width: 20% !important; min-width: 60px; }

    /* Use Case 섹션 */
    .dashboard-layout .col-md-6 { margin-bottom: 20px; }
    .dashboard-layout h3[style*="2.5rem"] { font-size: 1.3rem !important; }
    .dashboard-layout p[style*="1.75rem"] { font-size: 0.95rem !important; }
    .dashboard-layout ul[style*="1.5rem"] { font-size: 0.85rem !important; }
    .dashboard-layout h3[style*="2.5rem"] img[style*="48px"] { width: 22px !important; height: 22px !important; }
    .dashboard-layout .main_btn[style*="16px"] { font-size: 13px !important; }

    .dashboard-layout .image_card_box { margin-top: 10px; }
    .dashboard-layout .image_card_box img { border-radius: 10px; }

    /* 적용사례/기대효과 섹션 */
    .main-title { font-size: 1.7rem; }
    .section { padding: 40px 3%; }
    .title-area { margin-bottom: 25px; margin-top: 20px; }
    .section .line[style*="350px"] { width: 160px !important; }
    .card-container { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 15px; }
    .case-card { padding: 30px 20px; }
    .case-card h3 { font-size: 1.4rem; }
    .case-card p { font-size: 1rem; }
    .icon-placeholder { width: 110px; height: 110px; padding: 18px; }
    .effect-card { padding: 20px; }
    .effect-card img[style*="150px"] { width: 70px !important; height: 70px !important; }
    .card-title[style*="1.5rem"] { font-size: 1.05rem !important; }
    .feature-list li { font-size: 0.9rem; padding-left: 20px; margin-bottom: 10px; }
    .case-tag { font-size: 1rem; }
}

/* ============================================
   8. 반응형 - 소형 모바일 (320px ~ 480px)
   ============================================ */
@media (max-width: 480px) {
    .sub_wrap_1 { padding: 0 10px; margin: 20px auto !important; }
    .dashboard-layout .container-fluid { padding: 0 10px; }
    .dashboard-layout .sub_wrap_1[style*="margin-top: 150px"] { margin-top: 60px !important; }

    /* 상단 헤더 */
    .dashboard-layout .text-center > h4[style*="3.5rem"] { font-size: 1.3rem !important; }
    .dashboard-layout .text-center > h3[style*="3rem"] { font-size: 1.1rem !important; }
    .dashboard-layout .text-center > h3[style*="2rem"] { font-size: 1rem !important; }
    .dashboard-layout .text-center > p[style*="1.6rem"] { font-size: 0.8rem !important; }
    .dashboard-layout .text-center > .line[style*="440px"] { width: 140px !important; height: 3px !important; }
    .dashboard-layout .text-center[style*="margin-bottom:200px"] { margin-bottom: 25px !important; }
    .dashboard-layout .text-center img[src*="ai02"] { width: 25% !important; min-width: 50px; }

    /* Use Case 섹션 */
    .dashboard-layout h3[style*="2.5rem"] { font-size: 1.1rem !important; }
    .dashboard-layout p[style*="1.75rem"] { font-size: 0.85rem !important; }
    .dashboard-layout ul[style*="1.5rem"] { font-size: 0.78rem !important; }
    .dashboard-layout h3[style*="2.5rem"] img[style*="48px"] { width: 18px !important; height: 18px !important; margin-left: 4px !important; }
    .dashboard-layout .main_btn[style*="16px"] { font-size: 12px !important; }
    .dashboard-layout .mt-5 { margin-top: 1.5rem !important; }
    .dashboard-layout .image_card_box img { border-radius: 8px; }

    /* 적용사례/기대효과 섹션 */
    .main-title { font-size: 1.4rem; }
    .section { padding: 60px 3%; }
    .title-area { margin-bottom: 20px; margin-top: 15px; }
    .section .line[style*="350px"] { width: 120px !important; height: 3px !important; }
    .card-container { grid-template-columns: 1fr; gap: 15px; }
    .case-card { padding: 25px 15px; }
    .case-card h3 { font-size: 1.3rem; }
    .case-card p { font-size: 0.9rem; }
    .icon-placeholder { width: 90px; height: 90px; padding: 12px; }
    .effect-card { padding: 18px; }
    .effect-card img[style*="150px"] { width: 60px !important; height: 60px !important; }
    .card-title[style*="1.5rem"] { font-size: 0.95rem !important; }
    .feature-list li { font-size: 0.85rem; padding-left: 18px; margin-bottom: 8px; }
    .case-tag { font-size: 0.9rem; }
}