* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;

    background: #080808;
    color: #fff;

    font-family:
        Pretendard,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;

    line-height: 1.7;
}

a {
    color: inherit;
    text-decoration: none;
}


/* =========================================
   HEADER
========================================= */

.yt-header {

    position: sticky;

    top: 0;

    z-index: 1000;

    width: 100%;

    background:
        rgba(8,8,8,.88);

    border-bottom:
        1px solid rgba(255,255,255,.07);

    backdrop-filter:
        blur(15px);
}


.yt-header-inner {

    width: 100%;

    max-width: 1180px;

    height: 68px;

    margin: auto;

    padding: 0 20px;

    display: flex;

    align-items: center;

    justify-content: space-between;
}


.yt-logo {

    font-size: 21px;

    font-weight: 900;

    letter-spacing: -1px;
}


.yt-logo span {

    color: #999;

    font-weight: 500;
}


.yt-nav {

    display: flex;

    align-items: center;

    gap: 25px;

    color: #888;

    font-size: 13px;
}


.yt-nav a {

    transition: .2s;
}


.yt-nav a:hover {

    color: #fff;
}


/* =========================================
   HERO
========================================= */

.yt-hero {

    position: relative;

    overflow: hidden;

    padding:
        115px 20px
        100px;

    text-align: center;

    background:
        radial-gradient(
            circle at 50% 0%,
            #353535 0%,
            #191919 35%,
            #080808 75%
        );
}


.yt-hero::before {

    content: "";

    position: absolute;

    width: 650px;

    height: 650px;

    top: -400px;

    left: 50%;

    transform:
        translateX(-50%);

    background:
        radial-gradient(
            circle,
            rgba(255,255,255,.10),
            transparent 65%
        );

    pointer-events: none;
}


.yt-hero-content {

    position: relative;

    max-width: 850px;

    margin: auto;
}


.yt-badge {

    display: inline-flex;

    align-items: center;

    padding:
        7px 16px;

    border:
        1px solid rgba(255,255,255,.13);

    border-radius: 50px;

    background:
        rgba(255,255,255,.045);

    color: #aaa;

    font-size: 12px;

    font-weight: 700;
}


.yt-hero h1 {

    margin:
        24px 0 0;

    font-size:
        clamp(45px, 8vw, 80px);

    line-height: 1.05;

    letter-spacing: -4px;

    font-weight: 900;
}


.yt-hero h1 span {

    display: block;

    margin-top: 17px;

    color: #aaa;

    font-size:
        clamp(20px, 3vw, 29px);

    letter-spacing: -1px;
}


.yt-hero-text {

    max-width: 680px;

    margin:
        28px auto 0;

    color: #999;

    font-size: 15px;

    line-height: 1.9;
}


/* =========================================
   BUTTON
========================================= */

.yt-buttons {

    display: flex;

    justify-content: center;

    gap: 12px;

    flex-wrap: wrap;

    margin-top: 38px;
}


.yt-btn {

    min-width: 215px;

    height: 56px;

    padding:
        0 28px;

    display: inline-flex;

    align-items: center;

    justify-content: center;

    border-radius: 11px;

    font-size: 14px;

    font-weight: 800;

    transition:
        transform .2s ease,
        box-shadow .2s ease;
}


.yt-btn:hover {

    transform:
        translateY(-3px);
}


.yt-btn-primary {

    background: #fff;

    color: #111;

    box-shadow:
        0 12px 35px
        rgba(0,0,0,.3);
}


.yt-btn-secondary {

    background:
        rgba(255,255,255,.04);

    border:
        1px solid rgba(255,255,255,.13);

    color: #ddd;
}


/* =========================================
   SERVICE BUTTON COLORS
========================================= */

.yt-service-buttons {

    display: flex;

    gap: 10px;

    flex-wrap: wrap;
}


.yt-service-button {

    min-width: 145px;

    padding:
        13px 20px;

    display: inline-flex;

    align-items: center;

    justify-content: center;

    border-radius: 9px;

    font-size: 13px;

    font-weight: 800;

    transition: .2s ease;
}


.yt-service-button:hover {

    transform:
        translateY(-2px);
}


.yt-service-yatoon {

    background: #fff;

    color: #111;
}


.yt-service-newtoon {

    background: #222;

    color: #fff;

    border:
        1px solid rgba(255,255,255,.15);
}


/* =========================================
   COMMON SECTION
========================================= */

.yt-section {

    width: 100%;

    max-width: 1100px;

    margin: auto;

    padding:
        80px 20px;
}


.yt-section-head {

    margin-bottom: 32px;
}


.yt-section-label {

    color: #666;

    font-size: 11px;

    font-weight: 800;

    letter-spacing: 1.5px;
}


.yt-section-title {

    margin:
        8px 0 0;

    font-size: 30px;

    line-height: 1.3;

    letter-spacing: -1.5px;
}


.yt-section-description {

    max-width: 700px;

    margin:
        12px 0 0;

    color: #888;

    font-size: 14px;
}


/* =========================================
   INTRO
========================================= */

.yt-intro {

    padding: 40px;

    border:
        1px solid rgba(255,255,255,.08);

    border-radius: 18px;

    background:
        linear-gradient(
            145deg,
            rgba(255,255,255,.055),
            rgba(255,255,255,.015)
        );
}


.yt-intro h2 {

    margin: 0 0 18px;

    font-size: 23px;

    letter-spacing: -1px;
}


.yt-intro p {

    margin:
        10px 0;

    color: #999;

    font-size: 14px;

    line-height: 1.95;
}


/* =========================================
   WEBTOON SERVICES
========================================= */

.yt-brand-grid {

    display: grid;

    grid-template-columns:
        repeat(2, 1fr);

    gap: 15px;

    margin-top: 25px;
}


.yt-brand-box {

    padding: 30px;

    border:
        1px solid rgba(255,255,255,.08);

    border-radius: 18px;

    background: #111;

    transition: .2s ease;
}


.yt-brand-box:hover {

    transform:
        translateY(-3px);

    border-color:
        rgba(255,255,255,.15);
}


.yt-brand-top {

    display: flex;

    align-items: center;

    justify-content: space-between;

    gap: 20px;
}


.yt-brand-name {

    font-size: 28px;

    font-weight: 900;

    letter-spacing: -1px;
}


.yt-brand-description {

    margin-top: 12px;

    color: #888;

    font-size: 14px;

    line-height: 1.8;
}


.yt-brand-button {

    flex-shrink: 0;

    padding:
        13px 22px;

    border-radius: 9px;

    background: #fff;

    color: #111;

    font-size: 13px;

    font-weight: 800;

    transition: .2s ease;
}


.yt-brand-button:hover {

    transform:
        translateY(-2px);
}


.yt-newtoon-button {

    background: #222;

    color: #fff;

    border:
        1px solid rgba(255,255,255,.15);
}


/* =========================================
   GENRE
========================================= */

.yt-genre-grid {

    display: grid;

    grid-template-columns:
        repeat(4, 1fr);

    gap: 13px;
}


.yt-genre {

    min-height: 135px;

    padding: 22px;

    border:
        1px solid rgba(255,255,255,.07);

    border-radius: 14px;

    background: #111;

    transition: .2s ease;
}


.yt-genre:hover {

    transform:
        translateY(-4px);

    border-color:
        rgba(255,255,255,.18);

    background: #161616;
}


.yt-genre-icon {

    margin-bottom: 12px;

    font-size: 24px;
}


.yt-genre strong {

    display: block;

    font-size: 15px;
}


.yt-genre p {

    margin:
        5px 0 0;

    color: #777;

    font-size: 12px;

    line-height: 1.6;
}


/* =========================================
   RECOMMENDATION
========================================= */

.yt-recommend-grid {

    display: grid;

    grid-template-columns:
        repeat(3, 1fr);

    gap: 15px;
}


.yt-recommend-card {

    position: relative;

    min-height: 235px;

    padding: 28px;

    display: flex;

    flex-direction: column;

    border:
        1px solid rgba(255,255,255,.08);

    border-radius: 17px;

    background:
        linear-gradient(
            145deg,
            #181818,
            #0d0d0d
        );

    transition:
        transform .2s ease,
        border-color .2s ease,
        background .2s ease;
}


.yt-recommend-card:hover {

    transform:
        translateY(-4px);

    border-color:
        rgba(255,255,255,.18);

    background:
        linear-gradient(
            145deg,
            #1c1c1c,
            #101010
        );
}


.yt-recommend-tag {

    display: inline-flex;

    align-self: flex-start;

    padding:
        5px 10px;

    border:
        1px solid rgba(255,255,255,.10);

    border-radius: 50px;

    color: #777;

    font-size: 10px;

    font-weight: 800;

    letter-spacing: .7px;
}


.yt-recommend-card h3 {

    margin:
        20px 0 10px;

    color: #fff;

    font-size: 20px;

    line-height: 1.45;

    letter-spacing: -.8px;
}


.yt-recommend-card p {

    margin: 0;

    color: #888;

    font-size: 13px;

    line-height: 1.8;
}


.yt-recommend-link {

    margin-top: auto;

    padding-top: 22px;

    color: #ccc;

    font-size: 12px;

    font-weight: 800;
}


.yt-recommend-more {

    margin-top: 24px;

    text-align: right;
}


.yt-recommend-more a {

    display: inline-flex;

    align-items: center;

    gap: 7px;

    color: #aaa;

    font-size: 13px;

    font-weight: 800;

    transition: .2s ease;
}


.yt-recommend-more a:hover {

    color: #fff;
}


/* =========================================
   FEATURE
========================================= */

.yt-feature-grid {

    display: grid;

    grid-template-columns:
        repeat(3, 1fr);

    gap: 15px;
}


.yt-feature {

    min-height: 205px;

    padding: 28px;

    border:
        1px solid rgba(255,255,255,.07);

    border-radius: 16px;

    background:
        linear-gradient(
            145deg,
            #171717,
            #0d0d0d
        );
}


.yt-feature-number {

    color: #555;

    font-size: 11px;

    font-weight: 800;

    letter-spacing: 1px;
}


.yt-feature h3 {

    margin:
        17px 0 10px;

    font-size: 18px;

    letter-spacing: -.5px;
}


.yt-feature p {

    margin: 0;

    color: #888;

    font-size: 13px;

    line-height: 1.8;
}


/* =========================================
   GUIDE
========================================= */

.yt-guide {

    display: grid;

    gap: 12px;
}


.yt-guide-item {

    display: grid;

    grid-template-columns:
        62px 1fr;

    align-items: center;

    padding: 20px;

    border:
        1px solid rgba(255,255,255,.06);

    border-radius: 14px;

    background: #111;
}


.yt-guide-number {

    width: 40px;

    height: 40px;

    display: flex;

    align-items: center;

    justify-content: center;

    border-radius: 50%;

    background: #222;

    color: #aaa;

    font-size: 11px;

    font-weight: 800;
}


.yt-guide-item strong {

    display: block;

    margin-bottom: 4px;

    font-size: 15px;
}


.yt-guide-item p {

    margin: 0;

    color: #777;

    font-size: 13px;
}


/* =========================================
   INFO TABLE
========================================= */

.yt-table {

    overflow: hidden;

    border:
        1px solid rgba(255,255,255,.07);

    border-radius: 15px;

    background: #111;
}


.yt-table-row {

    display: grid;

    grid-template-columns:
        190px 1fr;

    border-bottom:
        1px solid rgba(255,255,255,.06);
}


.yt-table-row:last-child {

    border-bottom: 0;
}


.yt-table-row > div {

    padding: 20px;
}


.yt-table-row > div:first-child {

    color: #ddd;

    font-size: 14px;

    font-weight: 700;

    background:
        rgba(255,255,255,.025);
}


.yt-table-row > div:last-child {

    color: #888;

    font-size: 13px;
}


/* =========================================
   FAQ
========================================= */

.yt-faq {

    display: grid;

    gap: 10px;
}


.yt-faq-item {

    padding: 24px;

    border:
        1px solid rgba(255,255,255,.07);

    border-radius: 13px;

    background: #111;
}


.yt-faq-item strong {

    display: block;

    margin-bottom: 9px;

    font-size: 15px;
}


.yt-faq-item p {

    margin: 0;

    color: #777;

    font-size: 13px;

    line-height: 1.85;
}


/* =========================================
   CTA
========================================= */

.yt-cta {

    padding:
        60px 30px;

    text-align: center;

    border-radius: 20px;

    background:
        linear-gradient(
            135deg,
            #202020,
            #0d0d0d
        );

    border:
        1px solid rgba(255,255,255,.09);
}


.yt-cta h2 {

    margin: 0;

    font-size: 30px;

    letter-spacing: -1.5px;
}


.yt-cta p {

    max-width: 600px;

    margin:
        12px auto 27px;

    color: #888;

    font-size: 13px;
}


.yt-cta-buttons {

    display: flex;

    justify-content: center;

    gap: 10px;

    flex-wrap: wrap;
}


/* =========================================
   FOOTER
========================================= */

.yt-footer {

    padding:
        45px 20px 60px;

    border-top:
        1px solid rgba(255,255,255,.06);

    text-align: center;

    color: #505050;

    font-size: 11px;
}


/* =========================================
   MOBILE
========================================= */

@media (max-width: 850px) {

    .yt-nav {
        display: none;
    }


    .yt-genre-grid {

        grid-template-columns:
            repeat(2, 1fr);
    }


    .yt-feature-grid {

        grid-template-columns: 1fr;
    }


    .yt-recommend-grid {

        grid-template-columns: 1fr;
    }


    .yt-brand-grid {

        grid-template-columns: 1fr;
    }


    .yt-brand-top {

        align-items: flex-start;

        flex-direction: column;
    }


    .yt-brand-button {

        width: 100%;

        text-align: center;
    }

}


@media (max-width: 550px) {

    .yt-hero {

        padding:
            80px 18px
            70px;
    }


    .yt-hero h1 {

        letter-spacing: -2.5px;
    }


    .yt-section {

        padding:
            60px 16px;
    }


    .yt-intro {

        padding:
            28px 21px;
    }


    .yt-genre-grid {

        grid-template-columns: 1fr;
    }


    .yt-buttons {

        flex-direction: column;
    }


    .yt-btn {

        width: 100%;
    }


    .yt-service-buttons {

        width: 100%;

        flex-direction: column;
    }


    .yt-service-button {

        width: 100%;
    }


    .yt-table-row {

        grid-template-columns: 1fr;
    }


    .yt-table-row > div:first-child {

        padding-bottom: 6px;
    }


    .yt-table-row > div:last-child {

        padding-top: 6px;
    }


    .yt-guide-item {

        grid-template-columns:
            52px 1fr;
    }


    .yt-cta-buttons {

        flex-direction: column;
    }

}