.visual {position: relative; width: 100%; height: 750px; margin-top: 90px; background: url(./../img/kv_bg.webp)no-repeat 50% 50%; background-size: cover;}
.visual .txt-box {position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); text-align: center; width: 100%;}
.visual .txt-box .sub {font-size: 50px; font-weight: 300; line-height: 1.4; letter-spacing: -1px; color: var(--wt);}
.visual .txt-box .tit {font-size: 50px; font-weight: bold; line-height: 1.4; letter-spacing: -1px; color: var(--wt);}
.visual .txt-box .txt {margin-top: 30px; font-size: 18px; font-weight: 600; line-height: 1.4; letter-spacing: -0.36px; color: var(--gray_d9);}

.link_btn {display: flex; align-items: center; justify-content: center; gap: 23px; width: 188px; height: 57px; border-radius: 60px; margin: 60px auto 0; border: 1px solid var(--wt); box-sizing: border-box; font-size: 18px; font-weight: 500; line-height: 1.4; letter-spacing: -0.36px; color: var(--wt);}
.link_btn span {animation: move_arrow .5s linear alternate-reverse infinite; position: relative;}
@keyframes move_arrow {
  0% {right: -5px;}
  100% {right: 0;}
}

/* banner-area */
.banner-area {position: relative; width: 100%; height: 500px; background: url(./../img/banner_bg.webp)no-repeat 50% 50%; background-size: cover;}
.banner-area .txt-box {position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); text-align: center;}
.banner-area .txt-box .tit {margin-bottom: 20px; font-size: 40px; font-weight: bold; line-height: 1.4; letter-spacing: -0.8px; color: var(--wt);}
.banner-area .txt-box .sub {font-size: 24px; font-weight: 400; line-height: 1.5; letter-spacing: -0.48px; color: var(--gray_d9);}
.banner-area .txt-box .sub span {font-weight: bold;}

.banner-area .txt-box .link_btn {}

/* sub_kv */
.sub_kv {position: relative; width: 100%; height: 350px; margin-top: 90px;}

.sub_kv.sub1 {background: url(./../img/sub_bg1.webp)no-repeat 50% 50%; background-size: cover;}
.sub_kv.sub2 {background: url(./../img/sub_bg2.webp)no-repeat 50% 50%; background-size: cover;}
.sub_kv.sub3 {background: url(./../img/sub_bg3.webp)no-repeat 50% 50%; background-size: cover;}
.sub_kv.sub4 {background: url(./../img/sub_bg4.webp)no-repeat 50% 50%; background-size: cover;}

.sub_kv .txt-box {position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); text-align: center;}
.sub_kv .txt-box .tit {margin-bottom: 9px; font-size: 50px; font-weight: bold; line-height: 1.4; letter-spacing: -1px; color: var(--wt);}
.sub_kv .txt-box .sub {font-size: 22px; font-weight: bold; line-height: 1.4; letter-spacing: -0.44px; color: var(--gray_d9);}