/* 모바일 우선 스타일 */

body {
    background-color: #A7FC00;
    font-family: 'Noto Sans KR', sans-serif;
    color: #333;
    margin: 0;
    padding: 0;
}

main > section {
    padding: 40px 15px;
    box-sizing: border-box;
}

main > section.bg_color1 {
    background-color: #E0F2F1;
}

main > section.bg_color2 {
    background-color: #F1F8E9;
}

/* YouTube */
#channel_intro, #intro_video {
    text-align: center;
    padding: 40px 15px;
}

.intro_video_elem {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    padding: 30px 10px;
    box-sizing: border-box;
}

h2 {
    padding-bottom: 15px;
    font-size: 1.8rem;
    font-weight: 700;
    text-align: center;
}

#content_types {
    background: #e8f5e9;
    padding: 40px 15px;
}

.content_types_elem {
    max-width: 100%;
    margin: 0 auto;
    padding: 30px 15px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 77, 64, 0.1);
    text-align: center;
    background-color: #F1F8E9;
}

#content_types > .content_types_elem > h2 {
    font-size: 2rem;
    margin-bottom: 30px;
    color: #00796b;
}

.content_category {
    background: #ffffff;
    border-radius: 10px;
    padding: 20px 15px;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0, 77, 64, 0.08);
    text-align: left;
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
}

.content_category h3 {
    font-size: 1.5rem;
    color: #004d40;
    margin-bottom: 10px;
    font-weight: 600;
    border-left: 5px solid #00796b;
    padding-left: 10px;
}

.content_category ul li {
    font-size: 1rem;
    line-height: 1.5;
    padding-left: 20px;
    margin: 6px 0;
    position: relative;
}

.content_category ul li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: #00796b;
    font-weight: bold;
    font-size: 1.2rem;
    top: 50%;
    transform: translateY(-50%);
}

/* Behind the Scene */
#behind_the_scene {
    padding: 60px 15px;
    color: #333;
}

.behind_the_scene_elem {
    max-width: 100%;
    margin: 0 auto;
    text-align: center;
}

#behind_the_scene p {
    font-size: 1rem;
    line-height: 1.6;
    color: #4a4a4a;
}

#behind_the_scene p .mark {
    color: #ff6f61;
    font-weight: 600;
    background: rgba(255, 111, 97, 0.1);
    padding: 2px 4px;
    border-radius: 4px;
}

/* Channel Goal */
#channel_goal {
    padding: 40px 15px;
    text-align: center;
}

.channel_goal_elem {
    width: 100%;
    margin: 0 auto;
}

.channel_goal_list {
    display: block;
}

.channel_goal_list_elem {
    padding: 8px 0;
}

.channel_goal_list_elem_elem {
    background-color: #e0f2f1;
    color: #004d40;
    padding: 10px;
    border-radius: 10px;
    box-shadow: 3px 3px 5px rgba(0,0,0,0.2);
}