.ch {
  position: relative;
}

.ch-img {
  position: absolute;
  width: 100%;
  height: 350px;
  background-color: #000;
  z-index: -1;
}

.ch-img img {
  width: 100%;
  height: 100%;
  -o-object-fit: cover;
     object-fit: cover;
  opacity: 0.8;
}

.ch-wrap {
  position: relative;
  width: 100%;
  height: 350px;
  max-width: 1100px;
  margin: 0 auto;
}

.ch-board {
  position: relative;
  top: 25%;
  left: 0;
  width: 350px;
  background-color: #fff;
  text-align: center;
  padding: 40px 0 45px 0;
}

@media screen and (max-width: 600px) {
  .ch-board {
    left: calc((100% - 300px) / 2);
    width: 280px;
  }
}
.ch-board::after {
  content: "";
  position: absolute;
  top: 20px;
  left: 20px;
  width: 100%;
  height: 100%;
  background-color: #1bb3e0;
  z-index: -1;
}

.ch-tit {
  display: inline-block;
  font-size: 24px;
  font-weight: bold;
  letter-spacing: 2px;
  background-image: linear-gradient(to left, #1bb3e0 5px, transparent 5px);
  background-size: 10px 3px;
  background-repeat: repeat-x;
  background-position: bottom;
  padding-bottom: 10px;
}

@media screen and (max-width: 600px) {
  .ch-tit {
    font-size: 20px;
  }
}
.ch-tit p {
  color: #1bb3e0;
  font-family: "Jost", sans-serif;
  font-size: 18px;
  margin-bottom: 10px;
}

@media screen and (max-width: 600px) {
  .ch-tit p {
    font-size: 16px;
    margin-bottom: 5px;
  }
}
.ch-img img {
  -o-object-position: 50% 10%;
     object-position: 50% 10%;
}

@media screen and (max-width: 600px) {
  .ch-img img {
    -o-object-position: 70% 50%;
       object-position: 70% 50%;
  }
}
.questions {
  max-width: 1100px;
  margin: 0 auto;
  padding: 85px 0 0;
}

@media screen and (max-width: 600px) {
  .questions {
    max-width: 425px;
  }
}
@media screen and (max-width: 425px) {
  .questions {
    margin: 0 20px;
  }
}
@media screen and (max-width: 600px) {
  .questions {
    padding: 60px 0 0;
  }
}
.questions-item {
  background-image: linear-gradient(to right, #000 1px, transparent 1px);
  background-size: 5px 1px;
  background-repeat: repeat-x;
  background-position: bottom;
  padding: 30px 0;
  cursor: pointer;
}

@media screen and (max-width: 600px) {
  .questions-item {
    padding: 15px 0;
  }
}
.questions-item:first-child {
  background-image: linear-gradient(to right, #000 1px, transparent 1px), linear-gradient(to right, #000 1px, transparent 1px);
  background-size: 5px 1px, 5px 1px;
  background-repeat: repeat-x, repeat-x;
  background-position: top, bottom;
}

.questions-label {
  position: relative;
  font-size: 16px;
  font-weight: 500;
  padding-left: 70px;
}

@media screen and (max-width: 600px) {
  .questions-label {
    font-size: 14px;
    padding: 0 30px;
  }
}
.questions-label::before,
.questions-label::after {
  position: absolute;
}

.questions-label::before {
  content: "Q";
  top: 0;
  left: 25px;
  color: #1bb3e0;
  font-family: "Jost", sans-serif;
  font-size: 26px;
  font-weight: bold;
}

@media screen and (max-width: 600px) {
  .questions-label::before {
    left: 0;
    font-size: 20px;
  }
}
.questions-label::after {
  content: "";
  top: 50%;
  right: 30px;
  width: 8px;
  height: 8px;
  border-bottom: 2px solid #1bb3e0;
  border-right: 2px solid #1bb3e0;
  -webkit-transform: translateY(-50%) rotate(-45deg);
          transform: translateY(-50%) rotate(-45deg);
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
}

@media screen and (max-width: 600px) {
  .questions-label::after {
    right: 5px;
  }
}
.questions ._under::after {
  -webkit-transform: translateY(-50%) rotate(45deg);
          transform: translateY(-50%) rotate(45deg);
}

.questions-txt {
  position: relative;
  display: none;
  font-size: 16px;
  border-radius: 10px;
  padding: 0 0 0 70px;
  margin-top: 20px;
}

.questions-txt a {
  text-decoration: underline;
  -webkit-transition: all 0.2s;
  transition: all 0.2s;
}

.questions-txt a:hover {
  color: #1bb3e0;
}

@media screen and (max-width: 600px) {
  .questions-txt {
    font-size: 14px;
    padding: 0 0 0 30px;
    margin-top: 10px;
  }
}
.questions-txt::before {
  content: "A";
  position: absolute;
  top: 1px;
  left: 25px;
  color: #fa1b1b;
  font-family: "Jost", sans-serif;
  font-size: 26px;
  font-weight: bold;
}

@media screen and (max-width: 600px) {
  .questions-txt::before {
    top: 0;
    left: 0;
    font-size: 20px;
  }
}
.contact {
  max-width: 1100px;
  margin: 0 auto;
  text-align: center;
  padding: 100px 0;
}

@media screen and (max-width: 600px) {
  .contact {
    max-width: 425px;
  }
}
@media screen and (max-width: 425px) {
  .contact {
    margin: 0 20px;
  }
}
@media screen and (max-width: 600px) {
  .contact {
    padding: 70px 0;
  }
}
.contact-txt {
  position: relative;
  padding-bottom: 60px;
}

.contact-txt::after {
  content: "";
  position: absolute;
  left: 0;
  width: 70px;
  height: 5px;
  background-image: radial-gradient(#1bb3e0 25%, transparent 15%);
  background-size: 6px 6px;
  left: 50%;
  -webkit-transform: translateX(-50%);
          transform: translateX(-50%);
  bottom: 30px;
}

.contact-btn {
  display: block;
  width: 350px;
  color: #fff;
  font-weight: 500;
  letter-spacing: 2px;
  background-color: #1bb3e0;
  text-align: center;
  border: 1px solid #1bb3e0;
  padding: 15px 0;
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
  margin: 0 auto;
}

.contact-btn:hover {
  background-color: #fff;
  color: #1bb3e0;
}

@media screen and (max-width: 600px) {
  .contact-btn {
    width: 100%;
  }
}
.line {
  background-color: #f8f8f8;
  padding: 50px 0 20px;
}

@media screen and (max-width: 600px) {
  .line {
    padding: 30px 0 0;
  }
}
.line-img {
  max-width: 1100px;
  margin: 0 auto;
  display: block;
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
}

@media screen and (max-width: 600px) {
  .line-img {
    max-width: 425px;
  }
}
@media screen and (max-width: 425px) {
  .line-img {
    margin: 0 20px;
  }
}
.line-img:hover {
  opacity: 0.7;
}

.line-img img {
  width: 100%;
  height: auto;
}

@media screen and (max-width: 600px) {
  .line-img ._pc {
    display: none;
  }
}
.line-img ._sp {
  display: none;
}

@media screen and (max-width: 600px) {
  .line-img ._sp {
    display: initial;
  }
}
.questions-cat__list {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
}
@media screen and (max-width: 600px) {
  .questions-cat__list {
    grid-template-columns: repeat(2, 1fr);
  }
}
.questions-cat__item {
  display: block;
  color: #1bb3e0;
  font-weight: 500;
  text-align: center;
  border: 1px solid #1bb3e0;
  border-radius: 100vh;
  padding: 10px;
  cursor: pointer;
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
}
@media screen and (max-width: 600px) {
  .questions-cat__item {
    font-size: 12px;
    padding: 10px 5px;
  }
}
.questions-cat__item.selected {
  background-color: #1bb3e0;
  color: #fff;
}
.questions-cat__item:hover {
  background-color: #1bb3e0;
  color: #fff;
}
.questions-tit {
  font-size: 20px;
  font-weight: bold;
  text-align: center;
  padding-bottom: 15px;
  margin-top: 80px;
}
@media screen and (max-width: 600px) {
  .questions-tit {
    font-size: 18px;
    margin-top: 60px;
    padding-bottom: 10px;
  }
}
.questions-txt__link {
  position: relative;
  display: inline-block;
  font-weight: 500;
  margin-top: 40px;
  margin-left: 25px;
}
@media screen and (max-width: 600px) {
  .questions-txt__link {
    margin-top: 30px;
  }
}
.questions-txt__link span {
  position: absolute;
  top: 50%;
  left: -25px;
  -webkit-transform: translateY(-45%);
          transform: translateY(-45%);
  background-color: #1bb3e0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
}
.questions-txt__link span::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-35%, -50%);
          transform: translate(-35%, -50%);
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  border-left: 5px solid #fff;
}