.c4k{background:linear-gradient(105deg,#020202 0%,#171717 45%,#474747 100%);color:#fff;overflow:hidden;padding-top:72px}
.c4k *{box-sizing:border-box}
.c4k__intro{width:calc(100% - 80px);max-width:1180px;margin:0 auto;text-align:center;position:relative;z-index:2}
.c4k__intro h2{font-family:inherit!important;font-size:58px;line-height:1.05;font-weight:700;letter-spacing:-1.8px;margin:0 0 25px}
.c4k__intro p{font-size:34px;line-height:1.22;font-weight:700;letter-spacing:-.7px;max-width:970px;margin:0 auto}
.c4k__visual{position:relative;width:100%;margin-top:40px}
.c4k__visual>img{display:block;width:100%;height:auto;max-width:none}
.c4k__hotspot{position:absolute;left:27%;top:51%;z-index:3}
.c4k__hotspot summary{list-style:none;width:62px;height:62px;border-radius:50%;background:#fff;color:#111;display:grid;place-items:center;font-size:36px;line-height:1;cursor:pointer;border:8px solid rgba(255,255,255,.24);box-shadow:0 4px 18px rgba(0,0,0,.35);background-clip:padding-box;transition:transform .2s ease}
.c4k__hotspot summary::-webkit-details-marker{display:none}
.c4k__hotspot summary:hover{transform:scale(1.06)}
.c4k__hotspot[open] summary{transform:rotate(45deg)}
.c4k__popover{position:absolute;left:78px;top:50%;transform:translateY(-50%);width:270px;padding:20px 22px;background:#fff;color:#111;border-radius:12px;box-shadow:0 14px 35px rgba(0,0,0,.3)}
.c4k__popover strong{display:block;font-size:20px;margin-bottom:8px}
.c4k__popover p{font-size:15px;line-height:1.45;margin:0;color:#454545}
.c4k__modes{width:calc(100% - 80px);max-width:1480px;margin:-1px auto 0;display:grid;grid-template-columns:1fr 1fr;padding:36px 0 76px}
.c4k__mode{text-align:center;padding:0 60px}
.c4k__mode+.c4k__mode{border-left:1px solid rgba(255,255,255,.13)}
.c4k__mode h3{font-family:inherit!important;font-size:76px;line-height:1;font-weight:700;letter-spacing:-2px;margin:0 0 20px}
.c4k__mode h4{font-family:inherit!important;font-size:32px;line-height:1.2;font-weight:700;margin:0 0 30px}
.c4k__mode p{font-size:19px;line-height:1.5;margin:0 auto;max-width:560px;color:rgba(255,255,255,.88)}
@media(max-width:1100px){
  .c4k{padding-top:58px}
  .c4k__intro h2{font-size:48px}
  .c4k__intro p{font-size:28px}
  .c4k__hotspot summary{width:54px;height:54px;font-size:30px}
  .c4k__popover{width:240px;left:68px}
  .c4k__mode{padding:0 32px}
  .c4k__mode h3{font-size:60px}
  .c4k__mode h4{font-size:27px}
  .c4k__mode p{font-size:17px}
}
@media(max-width:749px){
  .c4k{padding-top:46px}
  .c4k__intro{width:calc(100% - 32px)}
  .c4k__intro h2{font-size:38px;letter-spacing:-1px;margin-bottom:18px}
  .c4k__intro p{font-size:22px;line-height:1.28;letter-spacing:-.3px}
  .c4k__visual{width:175%;margin-top:30px;left:50%;transform:translateX(-50%)}
  .c4k__hotspot{left:35%;top:52%}
  .c4k__hotspot summary{width:48px;height:48px;border-width:6px;font-size:27px}
  .c4k__popover{left:58px;width:210px;padding:15px}
  .c4k__popover strong{font-size:17px}
  .c4k__popover p{font-size:13px}
  .c4k__modes{width:calc(100% - 32px);grid-template-columns:1fr;padding:14px 0 48px}
  .c4k__mode{padding:30px 8px}
  .c4k__mode+.c4k__mode{border-left:0;border-top:1px solid rgba(255,255,255,.13)}
  .c4k__mode h3{font-size:48px;letter-spacing:-1px;margin-bottom:14px}
  .c4k__mode h4{font-size:23px;margin-bottom:16px}
  .c4k__mode p{font-size:15px;line-height:1.55}
}