:root {
    --color-bk: #25262B;
    --color-gy: #848890;
    --color-gy-light: #ADAEAF;
    --color-wh: #ffffff;

    --color-bg: #F7F8FA;
    --color-line: #E4E6E8;

    --color-main: #1B2D58;
    --color-hl-1: #FFC800;
    --color-hl-2: #FFAA00;
    --color-hl-3: #FF2652;
    
    --title-1: 64px;
    --title-2: 52px;
    --title-3: 32px; 

    --font-xl: 28px;
    --font-l: 24px;
    --font-m: 20px;
    --font-s: 18px;
    --font-xs: 16px;

    --header-height: 90px;

    --size-xl: 140px;
    --size-l: 80px;
    --size-m: 60px;
    --size-s: 40px;
    --size-xs: 20px;
}

/* ---------------- COMMON ---------------- */

::selection {
    background-color: var(--color-main);
    color: var(--color-wh);
}

* {
    margin: 0;
    padding: 0;
    list-style: none;
    text-decoration: none;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    min-width: 360px;
    max-width: 100vw;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    background-color: var(--color-wh);
    overflow-x: hidden;
}

section{
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding-top: var(--size-xl);
    padding-bottom: var(--size-xl);
    margin-top: var(--header-height);
}

.section-wrapper{
    max-width: 1360px;
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    padding-left: var(--size-s);
    padding-right: var(--size-s);
}

.section-title{
    font-family: 'Pretendard Variable', sans-serif;
    font-size: var(--title-2);
    letter-spacing: calc(-0.02 * var(--title-2));
    font-weight: 700;
    color: var(--color-bk);
    word-break: keep-all;
    line-height: 135%;
    margin-bottom: var(--size-m);
}

.section-title > span{
    color: var(--color-hl-2);
}

/* ---------------- HEADER ---------------- */

header{
    position: fixed;
    top: 0;
    min-width: 360px;
    width: 100%;
    height: var(--header-height);
    display: flex;
    justify-content: center;
    align-items: center;
    transition: 0.2s;
    z-index: 10;
}

header.sticky{
    background-color: #FFFFFFF2;
    backdrop-filter: blur(12px);
}

.header-wrapper{
    max-width: 1440px;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--size-s);
}

.logo > img{
    height: 48px;
    object-fit: contain;
}

.header-btn{
    font-family: 'Pretendard Variable', sans-serif;
    font-size: var(--font-m);
    letter-spacing: calc(-0.02 * var(--font-m));
    font-weight: 700;
    color: var(--color-bk);
    background-color: var(--color-hl-1);
    padding: 14px 32px;
    border-radius: 64px;
    transition: 0.2s;
}

.header-btn:hover{
    color: var(--color-wh);
    background-color: var(--color-main);
}

/* ---------------- CONTACT ---------------- */

form{
    width: 100%;
}

.inputs{
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: var(--size-s);
    row-gap: var(--size-s);
}

.input-wrapper{
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
}

.input-wrapper > label{
    font-family: 'Pretendard Variable', sans-serif;
    font-size: var(--font-m);
    letter-spacing: calc(-0.02 * var(--font-m));
    font-weight: 600;
    color: var(--color-bk);
    margin-bottom: 12px;
}

.input-wrapper > label > span{
    color: var(--color-hl-2);
}

.input-wrapper > input, .input-wrapper > select{
    width: 100%;
    font-family: 'Pretendard Variable', sans-serif;
    font-size: var(--font-s);
    letter-spacing: calc(-0.02 * var(--font-s));
    font-weight: 400;
    color: var(--color-bk);
    padding: 14px var(--size-xs);
    background-color: var(--color-bg);
    border: 1px solid var(--color-line);
    border-radius: 6px;
}

.input-wrapper > input:focus, .input-wrapper > select:focus{
    outline: none;
    border: 1px solid var(--color-hl-2);
}

.checkbox-wrapper{
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    margin-top: var(--size-s);
}

.checkbox-wrapper > div:first-of-type{
    width: 100%;
    font-family: 'Pretendard Variable', sans-serif;
    font-size: var(--font-xs);
    letter-spacing: calc(-0.02 * var(--font-xs));
    font-weight: 400;
    color: var(--color-gy);
    line-height: 140%;
    word-break: keep-all;
    border: 1px solid var(--color-line);
    padding: var(--size-xs);
    border-radius: 4px;
}

.checkbox-wrapper > div:last-of-type{
    width: 100%;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    margin-top: 12px;
}

.checkbox-wrapper > div:last-of-type > input{
    accent-color: var(--color-hl-2);
    margin-right: 6px;
}

.checkbox-wrapper > div:last-of-type > label{
    font-family: 'Pretendard Variable', sans-serif;
    font-size: var(--font-xs);
    letter-spacing: calc(-0.02 * var(--font-xs));
    font-weight: 400;
    color: var(--color-bk);
}

form > input{
    width: 100%;
    font-family: 'Pretendard Variable', sans-serif;
    font-size: var(--font-m);
    letter-spacing: calc(-0.02 * var(--font-m));
    font-weight: 700;
    color: var(--color-wh);
    background-color: var(--color-main);
    padding: var(--size-xs);
    border: none;
    border-radius: 8px;
    transition: 0.2s;
    cursor: pointer;
    margin-top: var(--size-s);
}

form > input:hover{
    background-color: var(--color-bk);
}
/* ---------------- FOOTER ---------------- */

footer{
    background-color: #F7F8FA;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--size-m) 0;
}

.footer-wrapper{
    max-width: 1360px;
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    padding: 0 var(--size-s);
}

.footer-wrapper > p{
    font-family: 'Pretendard Variable', sans-serif;
    font-size: var(--font-xs);
    font-weight: 400;
    color: var(--color-gy-light);
    margin-top: var(--size-xs);
    line-height: 140%;
    word-break: keep-all;
}

.footer-wrapper > p a{
    color: var(--color-gy-light);
}

.mo-only{
    display: none;
}

@media screen and (max-width: 1360px) {
    :root {       
        --title-1: 56px;
        --title-2: 45px;
        --title-3: 28px; 
    
        --font-xl: 24px;
        --font-l: 21px;
        --font-m: 18px;
        --font-s: 17px;
        --font-xs: 15px;
    
        --header-height: 80px;
    
        --size-xl: 120px;
        --size-l: 72px;
        --size-m: 54px;
        --size-s: 36px;
        --size-xs: 18px;
    }

    .logo > img{
        height: 40px;
    }

    .header-btn{
        padding: 13px 28px;
    }
}

@media screen and (max-width: 1024px) {
    :root {       
        --title-1: 48px;
        --title-2: 40px;
        --title-3: 26px; 
    
        --font-xl: 22px;
        --font-l: 20px;
        --font-m: 18px;
        --font-s: 16px;
        --font-xs: 14px;
    
        --header-height: 72px;
    
        --size-xl: 96px;
        --size-l: 72px;
        --size-m: 54px;
        --size-s: 36px;
        --size-xs: 18px;
    }
}

@media screen and (max-width: 768px) {
    :root {       
        --title-1: 36px;
        --title-2: 32px;
        --title-3: 24px; 
    
        --font-xl: 21px;
        --font-l: 19px;
        --font-m: 17px;
        --font-s: 15px;
        --font-xs: 14px;
    
        --header-height: 64px;
    
        --size-xl: 80px;
        --size-l: 64px;
        --size-m: 48px;
        --size-s: 32px;
        --size-xs: 16px;
    }

    .section-wrapper, .header-wrapper, .footer-wrapper{
        padding-left: 20px;
        padding-right: 20px;
    }

    .logo > img{
        height: 32px;
    }

    .header-btn{
        font-size: 16px;
        letter-spacing: calc(-0.02 * 16px);
        padding: 11px 24px;
    }

    .section-title{
        margin-bottom: var(--size-s);
    }

    .mo-only{
        display: block;
    }

    .inputs{
        grid-template-columns: 1fr;
        row-gap: 24px;
    }

    .footer-mo{
        display: none;
    }

    form > input{
        padding: var(--size-xs);
    }
}