@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700");
@import url("https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@400;700&display=swap");

.forum__header {
  background: url(../images/forum/theme_bk.png) center bottom no-repeat;
  background-size: cover;
  padding: 30px 0;
}

.forum__header--title {
  background: url(../images/forum/theme_title.png) center bottom no-repeat;
  width: 562px;
  height: 142px;
  margin: auto;
  background-size: cover;
  position: relative;
}

.forum__header--title--text {
  font-size: 18px;
  font-weight: 400;
  line-height: 1;
  position: absolute;
  bottom: 20px;
  left: 55px;
  width: 120px;
  text-align: center;
}

@media (max-width: 767.98px) {
  .forum__header--title {
    width: 100%;
    height: 0;
    padding-bottom: 25.1555555556%;
  }

  .forum__header--title--text {
    font-size: 16px;
    font-weight: 400;
    line-height: 1;
    position: absolute;
    bottom: 10px;
    left: 40px;
    width: 21%;
  }
}

.forum__contents {
  padding: 40px 0;
}

.forum__contents .container {
  padding: 0;
}

.forum__contents--wrapper {
  display: flex;
  flex-wrap: wrap;
}

@media (max-width: 767.98px) {
  .forum__contents--wrapper {
    flex-direction: column;
  }
}

.forum__contents--text {
  flex: 0 0 20%;
  padding: 0;
  margin-bottom: 30px;
}

@media (max-width: 767.98px) {
  .forum__contents--text {
    flex: auto;
    padding: 0 5px;
  }
}

.forum__contents--title {
  color: #E1C673;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.125;
  text-align: center;
}

.forum__contents--name {
  font-size: 14px;
  font-weight: 400;
  line-height: 1.2857142857;
  margin: 15px 0;
  text-align: center;
}

.forum__contents--comment {
  font-size: 14px;
  font-weight: 400;
  line-height: 1.8571428571;
  padding: 0 10px;
}

.letters {
  background: url(../images/forum/letters_bk.png) center bottom repeat;
  padding: 30px 0;
  height: 100%;
  width: 100%;
}

.letters__header {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 30px;
}

@media (max-width: 767.98px) {
  .letters__header {
    flex-direction: column;
    padding: 0 15px;
    margin-bottom: 0;
  }
}

.letters__header h1 {
  font-size: 18px;
  font-weight: 400;
  line-height: 1.4444444444;
  margin-left: 10px;
}

@media (max-width: 767.98px) {
  .letters__header h1 {
    margin: 20px 0;
    font-size: 16px;
    font-weight: 400;
    line-height: 1.625;
  }
}

.letters__contents--wrapper {
  display: flex;
  flex-wrap: wrap;
}

@media (max-width: 767.98px) {
  .letters__contents--wrapper {
    flex-direction: column;
  }
}

.letters__contents--text {
  flex: 0 0 23%;
  padding: 0 10px;
  padding-bottom: 30px;
}

@media (max-width: 767.98px) {
  .letters__contents--text {
    flex: auto;
    padding-bottom: 10px;
  }
}

.letters__contents--comment {
  font-size: 14px;
  font-weight: 400;
  line-height: 1.5;
  display: flex;
  justify-content: center;
}

.letters__contents--name {
  margin: 10px 0;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.5;
  text-align: center;
}

/* 繝懊ち繝ｳ */
.btn,
a.btn,
button.btn {
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1.5;
  position: relative;
  display: inline-block;
  padding: 1rem 4rem;
  cursor: pointer;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
  text-align: center;
  vertical-align: middle;
  text-decoration: none;
  letter-spacing: 0.1em;
  color: #212529;
  border-radius: 0.5rem;
}

.btn-wrap {
  margin: 3rem auto;
  width: fit-content;
}

a.btn-c {
  font-size: 1.5rem;
  position: relative;
  padding: 0.25rem 1.5rem 1.5rem 1.5rem;
  color: #fff;
  background: #ff4500;
  box-shadow: 0 5px 0 #e94919;
}

a.btn-c span {
  font-size: 1rem;
  position: absolute;
  top: -1.25rem;
  left: calc(50% - 150px);
  display: block;
  width: 300px;
  padding: 0.2rem 0;
  color: #ff4500;
  border: 2px solid #ff4500;
  border-radius: 100vh;
  background: #fff;
  box-shadow: 0 3px 3px rgb(0 0 0 / 20%);
}

a.btn-c span:before,
a.btn-c span:after {
  position: absolute;
  left: calc(50% - 10px);

  content: "";
}

a.btn-c span:before {
  bottom: -10px;

  border-width: 10px 10px 0 10px;
  border-style: solid;
  border-color: #ff4500 transparent transparent transparent;
}

a.btn-c span:after {
  bottom: -7px;

  border-width: 10px 10px 0 10px;
  border-style: solid;
  border-color: #fff transparent transparent transparent;
}

a.btn-c:hover {
  -webkit-transform: translate(0, 3px);
  transform: translate(0, 3px);
  opacity: 1;
  color: #fff;
  background: #eb5b30;
  -webkit-box-shadow: 0 2px 0 #ff4500;
  box-shadow: 0 2px 0 #ff4500;
}