@charset "UTF-8";

:where(.f-freepage) h1 {
  background: transparent;
  font-weight: normal;
  margin: 0;
  padding: 0;
}

:where(.f-freepage) h2 {
  background: transparent;
  font-weight: normal;
  margin: 0;
  padding: 0;
}

:where(.f-freepage) h3 {
  background: transparent;
  font-weight: normal;
  margin: 0;
  padding: 0;
}

.f-freepage {
  padding-bottom: 120px;
}

@media only screen and (max-width: 640px) {
  .f-freepage {
    padding-bottom: 60px;
  }
}

.f-freepage>*:nth-of-type(even) {
  background: #f7f7f7;
}

.l-basewidth {
  margin: 0 auto;
  width: 1000px;
}

@media only screen and (max-width: 640px) {
  .l-basewidth {
    min-width: auto;
    width: auto;
  }
}

@media only screen and (min-width: 640px) and (max-width: 1024px) {
  .l-basewidth {
    padding-left: 40px;
    padding-right: 40px;
    width: auto;
  }
}

.l-basewidth--card {
  background: #fff;
  border-radius: 40px;
  padding: 120px 40px;
}

@media only screen and (max-width: 640px) {
  .l-basewidth--card {
    border-radius: 20px;
    padding-left: 20px;
    padding-right: 20px;
  }
}

.l-section {
  background: #f0f0f0;
  margin: 0 auto;
  padding: 134px 7.2916666667vw;
  padding-bottom: 120px;
  padding-top: 120px;
  text-align: justify;
}

@media only screen and (max-width: 640px) {
  .l-section {
    overflow: hidden;
    padding-bottom: 100px;
    padding-top: 100px;
    width: 100%;
  }
}

@media only screen and (min-width: 640px) and (max-width: 1024px) {
  .l-section {
    overflow: hidden;
    padding: 100px 0;
    width: 100%;
  }
}

.l-section--whtBack {
  background: #fff;
}

.p-prologue {
  font-size: 18px;
  position: relative;
}

.p-prologue__ttl {
  font-family: "游明朝", "Yu Mincho", "游明朝体", "YuMincho", "ヒラギノ明朝 Pro W3", "Hiragino Mincho Pro", "HiraMinProN-W3", "HGS明朝E", "ＭＳ Ｐ明朝", "MS PMincho", "Times New Roman", serif;
  font-size: 36px;
  font-weight: bold;
  margin: 0 0 48px;
  text-align: center;
}

@media only screen and (max-width: 640px) {
  .p-prologue__ttl {
    font-size: 22px;
  }
}

.p-prologue__text {
  font-size: 16px;
  letter-spacing: 0.05em;
  line-height: 1.8;
  text-align: justify;
}

@media only screen and (max-width: 640px) {
  .p-prologue__text {
    text-align: left;
  }
}

.p-prologue__text+.p-prologue__text {
  margin: 20px 0 0;
}

.p-prize__block+.p-prize__block {
  margin: 120px auto 0;
}

@media only screen and (max-width: 640px) {
  .p-prize__block+.p-prize__block {
    margin: 40px auto 0;
  }
}

.p-prize__name {
  color: #a1965f;
  font-family: "游明朝", "Yu Mincho", "游明朝体", "YuMincho", "ヒラギノ明朝 Pro W3", "Hiragino Mincho Pro", "HiraMinProN-W3", "HGS明朝E", "ＭＳ Ｐ明朝", "MS PMincho", "Times New Roman", serif;
  font-size: 40px;
  margin: 0 0 16px;
}

@media only screen and (max-width: 640px) {
  .p-prize__name {
    font-size: 32px;
  }
}

.p-prize__name--sub {
  color: #232323;
  font-size: 32px;
}

@media only screen and (max-width: 640px) {
  .p-prize__name--sub {
    font-size: 24px;
  }
}

.p-prize__price {
  font-family: "游明朝", "Yu Mincho", "游明朝体", "YuMincho", "ヒラギノ明朝 Pro W3", "Hiragino Mincho Pro", "HiraMinProN-W3", "HGS明朝E", "ＭＳ Ｐ明朝", "MS PMincho", "Times New Roman", serif;
  font-size: 24px;
}

.p-prize__price>span {
  font-size: 48px;
}

.p-prize__img {
  margin: 0 0 16px;
}

.p-prize__nvgImg {max-width: 480px;width: calc( 100% - 20px );margin: 40px 0;}

.p-prize__nvgWrap{
  /* padding: 1.5em 2em;
  background: white; */
}
@media only screen and (max-width: 640px) {
  .p-prize__nvgWrapb {
    padding: 10px;
  }
}

.p-prize__nvgName{
  font-size: 18px;
  /* font-weight: bold; */
  margin: 0 0 8px;
}

.p-prize__nvgDesc{
  font-size: 14px;
  line-height: 1.8;
}

.p-prize__notice {
  color: #999;
  font-size: 12px;
  margin-top: 8px;
}

.p-prize__notice li::before {
  content: "※";
  display: inline;
  margin-right: 4px;
}

.p-prize__point {
  background: #fff;
  border-radius: 3px;
  margin: 16px 0 0;
  padding: 16px;
}

.p-prize__toha {
  font-size: 18px;
  font-weight: bold;
  margin: 0 0 4px;
}

@media only screen and (max-width: 640px) {
  .p-prize__toha {
    font-size: 16px;
  }
}

.p-desc__head {
  margin: 0 auto 40px;
}

.p-desc__dt {
  align-items: center;
  display: flex;
  font-family: "游明朝", "Yu Mincho", "游明朝体", "YuMincho", "ヒラギノ明朝 Pro W3", "Hiragino Mincho Pro", "HiraMinProN-W3", "HGS明朝E", "ＭＳ Ｐ明朝", "MS PMincho", "Times New Roman", serif;
  font-size: 24px;
  font-weight: bold;
  margin: 0 0 16px;
  padding: 32px 0 0;
}

@media only screen and (max-width: 640px) {
  .p-desc__dt {
    font-size: 20px;
  }
}

.p-desc__dt::before {
  background: #a1965f;
  content: "";
  display: block;
  height: 1em;
  margin: 0 8px 0 0;
  width: 3px;
}

.p-desc__dt:first-of-type {
  border-top: 1px solid #ddd;
}

.p-desc__dd {
  border-bottom: 1px solid #ddd;
  font-size: 16px;
  line-height: 1.8;
  padding: 0 0 32px 1em;
}

@media only screen and (max-width: 640px) {
  .p-desc__dd {
    font-size: 14px;
    padding: 0 0 32px 0;
  }
}

.p-desc__dd>strong {
  font-weight: bold;
}

.p-desc__dd--date {
  font-size: 18px;
  font-weight: bold;
}

.p-desc__schedule {
  border-bottom: 1px solid #a1965f;
  border-right: 1px solid #a1965f;
  display: flex;
}

@media only screen and (max-width: 640px) {
  .p-desc__schedule {
    flex-direction: column;
  }
}

.p-desc__schedule:first-child {
  border-top: 1px solid #a1965f;
}

.p-desc__schedule>dt {
  background: #a1965f;
  border-bottom: 1px solid #fff;
  display: inline-block;
  display: flex;
  align-items: center;
  flex: 0 0 240px;
  font-weight: bold;
  padding: 20px 10px;
  width: 3240px;
}

@media only screen and (max-width: 640px) {
  .p-desc__schedule>dt {
    border-bottom: none;
    flex: 0 0 auto;
    padding: 10px;
    width: auto;
  }
}

.p-desc__schedule>dt>span {
  align-items: center;
  background: #fff;
  border-radius: 50%;
  color: #a1965f;
  display: block;
  display: flex;
  height: 2em;
  justify-content: center;
  margin-right: 8px;
  width: 2em;
}

.p-desc__schedule>dd {
  border-left: 1px solid #ddd;
  padding: 20px;
}

@media only screen and (max-width: 640px) {
  .p-desc__schedule>dd {
    border-left: 1px solid #a1965f;
    flex: 0 0 auto;
    padding: 10px;
    width: auto;
  }
}

.p-desc__pick {
  background: #eee;
  border-radius: 3px;
  margin: 8px 0 0;
  padding: 16px;
}

.p-desc__pickTtl {
  border-bottom: 1px solid #a1965f;
  display: inline-block;
  font-family: "haboro", sans-serif;
  font-size: 18px;
  font-weight: bold;
  line-height: 1;
  margin: 0 0 8px;
}

.p-desc__deadline {
  color: var(--color-red);
  font-size: 32px;
  font-weight: bold;
}

@media only screen and (max-width: 640px) {
  .p-desc__deadline {
    font-size: 24px;
  }
}

.p-desc__disc>li {
  list-style: disc;
  margin-left: 1em;
}

.p-desc__notice {
  margin: 16px 0 0 1em;
}

.p-desc__notice>li {
  font-size: 14px;
  list-style: disc;
}

.p-desc__btn {
  margin: 120px auto 0;
  text-align: center;
}

@media only screen and (max-width: 640px) {
  .p-desc__btn {
    margin: 40px auto 0;
  }
}

.p-desc__maplink {
  margin: 0 0 0 1em;
  font-size: 12px;
}

.p-desc__map {
  margin: 16px 0 0;
}

.p-parking {
  margin: 16px 0 0;
  font-size: 14px;
}

.p-parking__item {
  display: flex;
  align-items: center;
}

.p-parking__item+.p-parking__item {
  margin-top: 8px;
}

.p-parking__icon {
  background: #000;
  color: white;
  line-height: 1;
  font-weight: bold;
  padding: 8px 5px;
  border: solid #edce24 1px;
  border-radius: 5px;
  margin: 0 8px 0 0;
  font-size: 11px;
}

.p-desc__info {
  margin: 24px 0 0;
}

.sectionLabel {
  align-items: center;
  color: #071b34;
  display: flex;
  flex: 1 1 auto;
  font-family: century-gothic, sans-serif;
  font-size: 4.5rem;
  font-weight: 400;
  justify-content: center;
  line-height: 1;
  padding-bottom: 120px;
  padding-top: 20px;
}

@media only screen and (max-width: 640px) {
  .sectionLabel {
    font-size: 3rem;
    padding: 0 2rem 2.5rem;
  }
}

@media only screen and (min-width: 640px) and (max-width: 1024px) {
  .sectionLabel {
    font-size: 3.5rem;
    padding: 0 2rem 4rem;
  }
}

.c-articleLabelL {
  font-family: "游明朝", "Yu Mincho", "游明朝体", "YuMincho", "ヒラギノ明朝 Pro W3", "Hiragino Mincho Pro", "HiraMinProN-W3", "HGS明朝E", "ＭＳ Ｐ明朝", "MS PMincho", "Times New Roman", serif;
  font-size: 32px;
  font-weight: 400;
  letter-spacing: 0.1em;
  line-height: 1.4;
  position: relative;
  text-align: center;
  z-index: 1;
}

@media only screen and (max-width: 640px) {
  .c-articleLabelL {
    font-size: 24px;
  }
}

.c-articleLabelM {
  color: #aaa;
  font-family: century-gothic, sans-serif;
  font-size: 1.6rem;
  font-weight: 400;
  line-height: 1.5em;
  text-align: center;
  z-index: 50;
}

@media only screen and (max-width: 640px) {
  .c-articleLabelM {
    line-height: 1.5em;
  }
}

.c-articleLabelS {
  color: #a1965f;
  font-family: "haboro", sans-serif;
  font-size: 14px;
  font-weight: 100;
  letter-spacing: 0.05em;
  margin: 0 auto 64px;
  text-align: center;
}

@media only screen and (max-width: 640px) {
  .c-articleLabelS {
    font-size: 12px;
    margin: 0 auto 60px;
  }
}

@media only screen and (min-width: 1024px) {
  .nonePc {
    display: none;
  }
}

@media only screen and (max-width: 640px) {
  .noneSp {
    display: none;
  }
}

@media only screen and (min-width: 640px) and (max-width: 1024px) {
  .noneTl {
    display: none;
  }
}

.c-linkButton {
  -webkit-filter: drop-shadow(0 1px 5px rgba(0, 0, 0, 0.3));
  background: #0795DE;
  border: 1px solid #0795DE;
  border-radius: 50px;
  color: #fff;
  display: inline-block;
  filter: drop-shadow(0 1px 5px rgba(0, 0, 0, 0.3));
  font-family: "haboro", sans-serif;
  font-size: 32px;
  line-height: 1;
  line-height: 1;
  padding: 24px 48px;
  position: relative;
  position: relative;
  text-align: center;
  transition: all 0.3s ease-in-out;
}

@media only screen and (max-width: 640px) {
  .c-linkButton {
    font-size: 16px;
    width: 320px;
  }
}

.c-linkButton::after {
  -webkit-transform: rotate(45deg);
  border-right: 2px #ffffff solid;
  border-top: 2px #ffffff solid;
  content: "";
  display: block;
  height: 20px;
  margin-top: -10px;
  position: absolute;
  right: 20px;
  top: 50%;
  transform: rotate(45deg);
  transition: all 0.3s ease-in-out;
  width: 20px;
}

.c-linkButton:hover {
  background: #fff;
  background-position: 99% 60%;
  border: 1px solid #232323;
  color: #232323;
  text-decoration: none;
}

.c-linkButton:hover::after {
  border-right: 1px #232323 solid;
  border-top: 1px #232323 solid;
}

.c-linkButton--inversion {
  background: #fff;
  color: #232323;
}

.c-linkButton--inversion::after {
  border-right: 1px #232323 solid;
  border-top: 1px #232323 solid;
}

.c-linkButton--inversion:hover {
  background: #232323;
  border: 1px solid #fff;
  color: #fff;
}

.c-linkButton--inversion:hover::after {
  border-right: 1px #fff solid;
  border-top: 1px #fff solid;
}

.linkArr {
  background: #232323;
  border: 1px solid #fff;
  color: #fff;
  color: #fff;
  display: block;
  font-family: century-gothic, sans-serif;
  position: relative;
  text-align: left;
  width: 200px;
}

.linkArr__arr {
  background-color: #fff;
  bottom: 1em;
  height: 1px;
  position: absolute;
  right: 24px;
  transition: all 0.5s ease;
  width: 35px;
}

.linkArr__arr:before {
  -webkit-transform: rotate(40deg);
  background-color: #fff;
  bottom: 3px;
  content: "";
  height: 1px;
  position: absolute;
  right: -1px;
  transform: rotate(40deg);
  transition: all 0.5s ease;
  width: 10px;
}

.linkArr__wrap {
  color: #fff;
  display: block;
  font-size: 12px;
  height: 100%;
  letter-spacing: 0.08em;
  line-height: 3em;
  padding-left: 18px;
  position: relative;
  text-transform: capitalize;
  width: 100%;
  z-index: 1;
}

.linkArr:hover .BtnArr__arr,
.linkArr:hover .BtnArr__arr:before {
  -webkit-transform: translateX(10px);
  background-color: #fff;
  transform: translateX(10px);
  transition: all 0.5s ease;
}

.linkArr:hover .BtnArr__arr:before {
  -webkit-transform: rotate(40deg);
  transform: rotate(40deg);
}

.c-linkUnderLine {
  color: #0795DE;
  display: inline-block;
  line-height: 1.1;
  position: relative;
  text-decoration: none;
  transition: color ease 0.3s;
}

.c-linkUnderLine::before,
.c-linkUnderLine::after {
  background-color: #0795DE;
  content: "";
  height: 1px;
  position: absolute;
}

.c-linkUnderLine::before {
  bottom: 0;
  left: 0;
  transition: width ease 0.4s;
  width: 0%;
}

.c-linkUnderLine::after {
  bottom: 0;
  left: 0;
  transition: all ease 0.6s;
  width: 100%;
}

.c-linkUnderLine:hover {
  text-decoration: none;
}

.c-linkUnderLine:hover::before {
  background-color: #0795DE;
  width: 100%;
}

.c-linkUnderLine:hover::after {
  background-color: #ddd;
  left: 100%;
  transition: all ease 0.2s;
  width: 0%;
}

.c-linkUnderLine--exlink {
  align-items: center;
  display: inline-flex;
  gap: 2px;
}

.c-linkUnderLine--exlink>img {
  -webkit-filter: invert(39%) sepia(52%) saturate(1675%) hue-rotate(171deg) brightness(102%) contrast(95%);
  filter: invert(39%) sepia(52%) saturate(1675%) hue-rotate(171deg) brightness(102%) contrast(95%);
  margin-top: -4px;
}

.c-linkHoverLine {
  color: #232323;
  display: inline-block;
  font-family: century-gothic, sans-serif;
  font-size: 12px;
  font-weight: normal;
  line-height: 1em;
  position: relative;
  text-align: center;
  transition: 0.3s;
  z-index: 2;
}

.c-linkHoverLine::after {
  background: #555555;
  bottom: 1px;
  content: "";
  height: 1px;
  left: 0;
  opacity: 0;
  position: absolute;
  transition: 0.3s;
  visibility: hidden;
  width: 100%;
}

.c-linkHoverLine:hover::after {
  bottom: -4px;
  opacity: 1;
  visibility: visible;
}

.c-linkHoverLine:hover:before {
  -webkit-transform-origin: left top;
  -webkit-transform: scale(1, 1);
  transform: scale(1, 1);
  transform-origin: left top;
}

.c-linkText {
  color: #0795DE;
  text-decoration: underline;
}

.c-linkText--External::after {
  -webkit-filter: invert(39%) sepia(52%) saturate(1675%) hue-rotate(171deg) brightness(102%) contrast(95%);
  background: url(https://www.arknets.co.jp/wwwroot/img/usr/ico_exlink.svg);
  content: "";
  display: inline-block;
  filter: invert(39%) sepia(52%) saturate(1675%) hue-rotate(171deg) brightness(102%) contrast(95%);
  height: 1em;
  margin: 0 0 0 4px;
  width: 1em;
}

.u-mt10px {
  margin-top: 10px;
}

.u-mt20px {
  margin-top: 20px;
}

.u-mt30px {
  margin-top: 30px;
}

.u-mt60px {
  margin-top: 60px;
}

.u-mb100px {
  margin-bottom: 100px;
}

.u-imgfix {
  height: auto;
  vertical-align: bottom;
  width: 100%;
}

.js-show-b {
  -webkit-transform: translate(0, 10px);
  opacity: 0;
  transform: translate(0, 10px);
  transition: all 1s;
}

.js-show-b.is-show-b {
  -webkit-transform: translate(0, 0);
  opacity: 1;
  transform: translate(0, 0);
}

.js-show-t {
  -webkit-transform: translate(0, -10px);
  opacity: 0;
  transform: translate(0, -10px);
  transition: all 1s;
}

.js-show-t.is-show-t {
  -webkit-transform: translate(0, 0);
  opacity: 1;
  transform: translate(0, 0);
}

.js-show-l {
  -webkit-transform: translate(-10px, 0);
  opacity: 0;
  transform: translate(-10px, 0);
  transition: all 1s;
}

.js-show-l.is-show-l {
  -webkit-transform: translate(0, 0);
  opacity: 1;
  transform: translate(0, 0);
}

.js-show-r {
  -webkit-transform: translate(10px, 0);
  opacity: 0;
  transform: translate(10px, 0);
  transition: all 1s;
}

.js-show-r.is-show-r {
  -webkit-transform: translate(0, 0);
  opacity: 1;
  transform: translate(0, 0);
}

.Video__section {
  display: flex;
  justify-content: center;
  margin: 100px auto 0;
  position: relative;
  width: 1000px;
}

@media screen and (max-width: 959px) {
  .Video__section {
    width: 90%;
  }
}

@media screen and (max-width: 559px) {
  .Video__section {
    display: block;
    width: auto;
    margin: 50px auto;
  }
}

.Video__box {
  width: 60%;
}

@media screen and (max-width: 559px) {
  .Video__box {
    flex-direction: column;
    width: 100%;
  }
}



.p-video__img {
  aspect-ratio: 16 / 9;
}


@media only screen and (max-width: 640px) {
  .p-video__img {
    flex: 0 0 100%;
    margin: 0 0 4rem;
    width: 100%;
  }
}


.p-video__img iframe {
  height: 100%;
}

.btn-square-soft {
  display: inline-block;
  padding: 0.5em 1em;
  text-decoration: none;
  border-radius: 4px;
  color: #ffffff;
  background-image: linear-gradient(45deg, #b7af8d 0%, #8c7f48 100%);
  box-shadow: 0px 2px 2px rgba(0, 0, 0, 0.29);
  border-bottom: solid 3px #564c1f;
  font-family: "游明朝", "Yu Mincho", "游明朝体", "YuMincho", "ヒラギノ明朝 Pro W3", "Hiragino Mincho Pro", "HiraMinProN-W3", "HGS明朝E", "ＭＳ Ｐ明朝", "MS PMincho", "Times New Roman", serif;
  font-size: 20px;
}

/* ---.btn-square-soft:active {
  -webkit-transform: translateY(4px);
  transform: translateY(4px);
  box-shadow: 0px 0px 1px rgba(0, 0, 0, 0.2);
  border-bottom: none;
}--- */





.form {
  text-align: center;
  margin-bottom: 100px;
}



.btn-square-soft2 {
  display: inline-block;
  padding: 0.5em 2.5em;
  text-decoration: none;
  border-radius: 4px;
  color: #ffffff;
  background-image: linear-gradient(45deg, #b7af8d 0%, #8c7f48 100%);
  box-shadow: 0px 2px 2px rgba(0, 0, 0, 0.29);
  border-bottom: solid 3px #564c1f;
  font-family: "游明朝", "Yu Mincho", "游明朝体", "YuMincho", "ヒラギノ明朝 Pro W3", "Hiragino Mincho Pro", "HiraMinProN-W3", "HGS明朝E", "ＭＳ Ｐ明朝", "MS PMincho", "Times New Roman", serif;
  font-size: 40px;

  /* 矢印を追加するための設定 */
  position: relative;
  /* ::afterを配置するために必要 */
  padding-right: 2.5em;
  /* 矢印スペース分、右のパディングを増やす */
}

/* 丸矢印のスタイル */
.btn-square-soft2::after {
 content: '»';
    font-size: 1.5em;
    position: absolute;
    top: 44%;
    right: 0.7em;
    transform: translateY(-50%);
    line-height: 1;
}

@media screen and (max-width: 640px) {
  .form {
    text-align: center;
    margin-bottom: 50px;
  }

  .btn-square-soft2 {
    font-size: 20px;
 padding-right: 2.5em;
    /* スマホサイズでも矢印のスペースを確保 */
  }

   /* スマホサイズの丸矢印のスタイル */
  .btn-square-soft2::after {
    font-size: 1.1em;
    /* スマホでのサイズ調整 */
    right: 0.5em;
    /* スマホでの位置調整 */
  }
}

/* ---.btn-square-soft2:active {
  -webkit-transform: translateY(4px);
  transform: translateY(4px);
  box-shadow: 0px 0px 1px rgba(0, 0, 0, 0.2);
  border-bottom: none;
}--- */





/* --- 初期状態（非表示） --- */
.p-button {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    width: 300px;
    height: 60px;
    border: none;
    
    /* 垂直方向中央寄せのために display: flex を使用 */
    display: flex;
    justify-content: center; /* 水平方向中央寄せ */
    align-items: center;     /* 垂直方向中央寄せ（ここが重要）*/
    
    text-align: center; /* 不要ですが、他の要素に影響を与える可能性を考慮し残す場合は、Flexboxが優先されます */
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, transform 0.4s ease, visibility 0.4s ease;
    z-index: 995;
    
    /* ↓↓↓ この行は、上の `display: flex` と衝突するため削除するかコメントアウトしてください。 ↓↓↓ */
    /* display: inline-block; */ 
    
    padding: 0; /* height: 60px で高さを指定しているため、上下のパディングは 0 にするのが理想的 */
    
    text-decoration: none;
    border-radius: 6px;
    background-image: linear-gradient(45deg, #b7af8d 0%, #8c7f48 100%);
    box-shadow: 0px 2px 2px rgba(0, 0, 0, 0.29);
    border-bottom: solid 3px #564c1f;
    font-family: "游明朝", "Yu Mincho", "游明朝体", "YuMincho", "ヒラギノ明朝 Pro W3", "Hiragino Mincho Pro", "HiraMinProN-W3", "HGS明朝E", "ＭＳ Ｐ明朝", "MS PMincho", "Times New Roman", serif;
    font-size: 20px;
    color: #ffffff;
}

/* リンクタグ <a> がある場合は、<a>にもスタイルを適用します */
.p-button a {
    color: #ffffff;
    /* <a>タグ自体も中央に配置するため、display: flexを使う場合は aタグに flex-grow: 1; を適用し、
       aタグ内の文字を中央寄せにすることが多いです。
       ただし、今回のHTMLの構造から、aタグに `display: block` を適用し、
       親要素の Flexbox を活かすのが最も簡単です。 */
    display: block; 
    width: 100%;
    height: 100%;
    
    /* <a>タグ内のテキストを中央寄せにするための Flexbox (二重に適用) */
    display: flex;
    justify-content: center;
    align-items: center;
}

/* --- スクロール後に表示される状態 --- */
.p-button.show {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* --- 矢印マーク 
.p-button::after {
  content: "";
  width: 12px;
  height: 12px;
  border-right: 1px solid #fff;
  border-top: 1px solid #fff;
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}--- */

/* --- hover時 
.p-button:hover {
  background-color: #fafafa;
  color: #232323;
  border: solid 0.5px black;
}
.p-button:hover::after {
  border-right: 1px solid #232323;
  border-top: 1px solid #232323;
}--- */

/* --- スマホ対応 --- */
@media screen and (max-width: 640px) {
  .p-button {
    width: 250px;
    height: 60px;
    bottom: 35px;
    font-size: 16px;
  }

  .p-button::after {
    width: 8px;
    height: 8px;
    right: 15px;
  }
}