.main_visual {
        height: 500px;
        background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
        display: flex;
        align-items: center;
        justify-content: center;
        text-align: center;
        color: #fff;
        padding-top: 60px;
        position: relative;
        overflow: hidden;
    }

    .main_visual::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
        opacity: 0.05;
    }

    .visual_content {
        position: relative;
        z-index: 1;
        padding: 0 20px;
        max-width: 800px;
    }

    .welcome_text {
        display: inline-block;
        background: rgba(255, 255, 255, 0.1);
        padding: 8px 16px;
        border-radius: 20px;
        font-size: 14px;
        font-weight: 500;
        letter-spacing: 2px;
        margin-bottom: 20px;
        text-transform: uppercase;
    }

    .visual_content h1 {
        font-size: 56px;
        font-weight: 700;
        margin-bottom: 20px;
        line-height: 1.2;
        letter-spacing: -0.5px;
    }

    .visual_content p {
        font-size: 20px;
        font-weight: 400;
        margin-bottom: 40px;
        line-height: 1.5;
        color: rgba(255,255,255,0.9);
    }

    .guide_buttons {
        display: flex;
        gap: 20px;
        justify-content: center;
        margin-top: 40px;
    }

    .primary_btn, .secondary_btn {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        padding: 16px 32px;
        border-radius: 12px;
        font-size: 16px;
        font-weight: 500;
        text-decoration: none;
        transition: all 0.3s ease;
    }

    .primary_btn {
        background: #3498db;
        color: #fff;
        box-shadow: 0 4px 12px rgba(52, 152, 219, 0.2);
    }

    .secondary_btn {
        background: rgba(255, 255, 255, 0.1);
        color: #fff;
        backdrop-filter: blur(10px);
    }

    .primary_btn:hover {
        background: #2980b9;
        transform: translateY(-2px);
        box-shadow: 0 6px 16px rgba(52, 152, 219, 0.3);
    }

    .secondary_btn:hover {
        background: rgba(255, 255, 255, 0.15);
        transform: translateY(-2px);
    }

    .feature_section {
        background: #f8f9fa;
        padding: 100px 0;
        margin: 0;
    }

    .feature_grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 30px;
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
    }

    .feature_card {
        background: #fff;
        padding: 40px;
        border-radius: 15px;
        text-align: center;
        box-shadow: 0 10px 30px rgba(0,0,0,0.05);
        transition: all 0.3s ease;
        border: 1px solid rgba(0,0,0,0.05);
    }

    .feature_card:hover {
        transform: translateY(-5px);
        box-shadow: 0 15px 40px rgba(0,0,0,0.1);
    }

    .feature_card .card_icon {
        width: 100px;
        height: 100px;
        background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
        border-radius: 25px;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 25px;
        transition: all 0.3s ease;
    }

    .feature_card:hover .card_icon {
        transform: scale(1.1);
    }

    .feature_card .card_icon i {
        font-size: 45px;
        color: #fff;
    }

    .feature_card h3 {
        font-size: 22px;
        font-weight: 600;
        color: #2c3e50;
        margin-bottom: 15px;
    }

    .feature_card p {
        font-size: 16px;
        color: #666;
        line-height: 1.6;
        margin: 0;
    }

    section h2 {
        font-size: 36px;
        font-weight: 700;
        color: #2c3e50;
        text-align: center;
        margin-bottom: 60px;
        line-height: 1.3;
        position: relative;
        padding-bottom: 20px;
    }



    .course_section {
        padding: 100px 0;
        background: #fff;
    }

    .guide_section {
        background: #f8f9fa;
        padding: 100px 0;
        margin: 0;
    }

    .guide_section h2 {
        margin: 0 auto;
    }

    .course_grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 30px;
        max-width: 1200px;
        margin: 0 auto;
        padding: 0 20px;
    }

    .course_card {
        background: #fff;
        padding: 40px;
        border-radius: 15px;
        text-align: center;
        box-shadow: 0 10px 30px rgba(0,0,0,0.05);
        transition: all 0.3s ease;
        border: 1px solid rgba(0,0,0,0.05);
        position: relative;
        overflow: hidden;
        aspect-ratio: 1;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    .course_card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 5px;
    }

    .course_card.aws::before {
        background: linear-gradient(90deg, #FF9900 0%, #FFC300 100%);
    }

    .course_card.ncafe::before {
        background: linear-gradient(90deg, #2DB400 0%, #1F8C00 100%);
    }

    .course_card.nblog::before {
        background: linear-gradient(90deg, #00C73C 0%, #00A32C 100%);
    }

    .course_card.coupang::before {
        background: linear-gradient(90deg, #E52330 0%, #B81D27 100%);
    }

    .course_card.tistory::before {
        background: linear-gradient(90deg, #000000 0%, #333333 100%);
    }

    .course_card.threads::before {
        background: linear-gradient(90deg, #0066FF 0%, #0052CC 100%);
    }

    .course_card.seo::before {
        background: linear-gradient(90deg, #9C27B0 0%, #7B1FA2 100%);
    }

    .course_card.wordpress::before {
        background: linear-gradient(90deg, #21759B 0%, #1A5C7A 100%);
    }

    .course_card.freelance::before {
        background: linear-gradient(90deg, #FF5722 0%, #F4511E 100%);
    }

    .course_card .card_icon {
        width: 100px;
        height: 100px;
        border-radius: 25px;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 25px;
        transition: all 0.3s ease;
    }

    .course_card .card_icon i {
        font-size: 45px;
        color: #fff;
    }

    .course_card.aws .card_icon {
        background: linear-gradient(135deg, #FF9900 0%, #FFC300 100%);
        box-shadow: 0 5px 15px rgba(255, 153, 0, 0.2);
    }

    .course_card.ncafe .card_icon {
        background: linear-gradient(135deg, #2DB400 0%, #1F8C00 100%);
        box-shadow: 0 5px 15px rgba(45, 180, 0, 0.2);
    }

    .course_card.nblog .card_icon {
        background: linear-gradient(135deg, #00C73C 0%, #00A32C 100%);
        box-shadow: 0 5px 15px rgba(0, 199, 60, 0.2);
    }

    .course_card.coupang .card_icon {
        background: linear-gradient(135deg, #E52330 0%, #B81D27 100%);
        box-shadow: 0 5px 15px rgba(229, 35, 48, 0.2);
    }

    .course_card.tistory .card_icon {
        background: linear-gradient(135deg, #000000 0%, #333333 100%);
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    }

    .course_card.threads .card_icon {
        background: linear-gradient(135deg, #0066FF 0%, #0052CC 100%);
        box-shadow: 0 5px 15px rgba(0, 102, 255, 0.2);
    }

    .course_card.seo .card_icon {
        background: linear-gradient(135deg, #9C27B0 0%, #7B1FA2 100%);
        box-shadow: 0 5px 15px rgba(156, 39, 176, 0.2);
    }

    .course_card.wordpress .card_icon {
        background: linear-gradient(135deg, #21759B 0%, #1A5C7A 100%);
        box-shadow: 0 5px 15px rgba(33, 117, 155, 0.2);
    }

    .course_card.freelance .card_icon {
        background: linear-gradient(135deg, #FF5722 0%, #F4511E 100%);
        box-shadow: 0 5px 15px rgba(255, 87, 34, 0.2);
    }

    .course_card h3 {
        font-size: 20px;
        font-weight: 600;
        color: #2c3e50;
        margin: 0 0 15px;
        transition: all 0.3s ease;
    }

    .course_card p {
        font-size: 16px;
        color: #666;
        margin: 0;
        line-height: 1.5;
    }

    .course_card:hover {
        transform: translateY(-5px);
        box-shadow: 0 15px 40px rgba(0,0,0,0.1);
    }

    .course_card:hover .card_icon {
        transform: scale(1.1) rotate(-5deg);
    }

    .course_card:hover h3 {
        color: var(--hover-color, #3498db);
    }

    .course_card.aws:hover h3 { --hover-color: #FF9900; }
    .course_card.ncafe:hover h3 { --hover-color: #2DB400; }
    .course_card.nblog:hover h3 { --hover-color: #00C73C; }
    .course_card.coupang:hover h3 { --hover-color: #E52330; }
    .course_card.tistory:hover h3 { --hover-color: #000000; }
    .course_card.threads:hover h3 { --hover-color: #0066FF; }
    .course_card.seo:hover h3 { --hover-color: #9C27B0; }
    .course_card.wordpress:hover h3 { --hover-color: #21759B; }
    .course_card.freelance:hover h3 { --hover-color: #FF5722; }

    .guide_grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 30px;
    }

    .guide_card {
        background: #fff;
        padding: 40px;
        border-radius: 20px;
        text-align: center;
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        text-decoration: none;
        transition: transform 0.3s ease;
    }

    .guide_card:hover {
        transform: translateY(-5px);
    }

    .guide_card i {
        font-size: 40px;
        color: #3498db;
        margin-bottom: 20px;
    }

    .guide_card h3 {
        color: #2c3e50;
        margin-bottom: 15px;
    }

    .guide_card p {
        color: #666;
        font-size: 16px;
        margin: 0;
    }

    /* 모든 페이지 공통 헤더 스타일 */
    .header_wrap {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        background: #fff;
    }

    .container {
        padding-top: 120px;  /* 헤더 높이 + 추가 여백 */
    }

    @media (max-width: 768px) {
        .main_visual {
            height: auto;
            min-height: 400px;
            padding: 120px 20px 60px;
        }

        .visual_content {
            padding-top: 20px;
        }

        .visual_content h1 {
            font-size: 36px;
            margin-bottom: 15px;
        }

        .visual_content p {
            font-size: 18px;
            margin-bottom: 30px;
        }

        .guide_buttons {
            flex-direction: column;
            gap: 15px;
        }

        .primary_btn, .secondary_btn {
            width: 100%;
            justify-content: center;
            padding: 14px 20px;
        }

        .feature_section,
        .course_section,
        .guide_section {
            padding: 60px 0;
            margin: 0 auto;
        }

        section h2 {
            font-size: 28px;
            margin-bottom: 40px;
        }

        .feature_grid {
            grid-template-columns: 1fr;
            gap: 20px;
            padding: 0 15px;
        }

        .feature_card {
            padding: 30px 20px;
        }

        .feature_card .card_icon {
            width: 80px;
            height: 80px;
            margin-bottom: 20px;
        }

        .feature_card .card_icon i {
            font-size: 35px;
        }

        .course_grid {
            grid-template-columns: 1fr;
            gap: 20px;
            padding: 0 15px;
        }

        .course_card {
            aspect-ratio: auto;
            padding: 30px 20px;
        }

        .course_card .card_icon {
            width: 80px;
            height: 80px;
            margin-bottom: 20px;
        }

        .course_card .card_icon i {
            font-size: 35px;
        }

        .course_card h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }

        .course_card p {
            font-size: 15px;
        }
    }

    @media (max-width: 480px) {
        .main_visual {
            min-height: 350px;
            padding: 80px 15px 40px;
        }

        .visual_content h1 {
            font-size: 32px;
        }

        .visual_content p {
            font-size: 16px;
        }

        .welcome_text {
            font-size: 12px;
            padding: 6px 12px;
        }

        section h2 {
            font-size: 24px;
            margin-bottom: 30px;
        }

        .feature_card h3,
        .course_card h3 {
            font-size: 16px;
        }

        .feature_card p,
        .course_card p {
            font-size: 14px;
        }
    }

    .guide-container {
        margin-top: 20px;  /* 모바일에서 헤더와의 간격 */
        padding: 15px;
    }

    /* 모바일 화면에서 더 큰 간격이 필요한 경우 */
    @media screen and (max-width: 768px) {
        .guide-container {
            margin-top: 30px;
        }
    }