:root {
  --font-color: #000;
  --base-color: #f3f3f3;
  --sub-color: #393939;
  --soft-color: #b2b2b2;
  --border-color: #ccc;
  --white-color: #fff;
  --red-color: #d30000;
}

/* common
------------------------------ */
html {
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--base-color);
  font-family: "游ゴシック体", YuGothic, "游ゴシック", "Yu Gothic", "Hiragino Kaku Gothic Pro", "MS Pゴシック", "MS PGothic", sans-serif;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

button {
  cursor: pointer;
}

img {
  display: block;
  max-width: 100%;
}

svg {
  display: block;
}

p {
  line-height: 1.4;
}

textarea {
  width: 100%;
  resize: none;
}

.wrap {
  width: 100%;
}

.container {
  width: 100%;
  max-width: 1000px;
  min-height: 85vh;
  margin: 0 auto;
  padding: 50px 15px;
}

.title {
  text-align: center;
  color: var(--font-color);
  margin-bottom: 2.5em;
}

.title--main .title__head {
  font-size: clamp(20px, 2.3vw, 30px);
}

.title--sub .title__head {
  font-size: clamp(15px, 1.8vw, 22px);
}

.btn-container {
  text-align: center;
  margin-top: 1em;
}

.btn {
  display: inline-block;
  width: 85%;
  max-width: 345px;
  font-weight: 600;
  border: 1px solid;
  border-radius: 50px;
  padding: 1em;
  letter-spacing: .5px;
  line-height: 1.4;
  cursor: pointer;
}

.btn--main {
  color: var(--base-color);
  background: var(--font-color);
  border-color: var(--font-color);
}

.btn--sub {
  color: var(--font-color);
  background: var(--base-color);
  border-color: var(--font-color);
}

.btn-container--back {
  text-align: left;
  margin-top: 70px;
}

.btn--back {
  width: auto;
  padding: .5em 1.2em;
  color: var(--base-color);
  background: var(--font-color);
  border-color: var(--font-color);
  font-size: 95%;
  position: relative;
}

.btn--back::before {
  content: " ";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-top: 1px solid var(--base-color);
  border-left: 1px solid var(--base-color);
  transform: rotate(-45deg) translateY(-20%);
  margin-right: 5px;
}

.txt--notice {
  text-align: center;
  padding: 3em 0;
  margin-bottom: 50px;
}

.error-msg {
  margin-bottom: 1.5em;
}

.error-msg p {
  color: var(--red-color);
}

@media screen and (min-width: 961px) {
  body, button, input, optgroup, select, textarea {
    font-size: 15px;
  }

  .sp {
    display: none;
  }

  .btn--main, .btn--sub, .btn--back {
    transition: all 0.3s ease;
  }

  .btn--main:hover {
    color: var(--font-color);
    background: var(--base-color);
    border-color: var(--font-color);
  }

  .btn--sub:hover {
    color: var(--base-color);
    background: var(--font-color);
    border-color: var(--font-color);
  }

  .btn--back:hover {
    color: var(--font-color);
    background: var(--base-color);
    border-color: var(--font-color);
  }

  .btn--back:hover::before {
    border-color: var(--font-color);
  }
}

@media screen and (max-width: 960px) {
  body, button, input, optgroup, select, textarea {
    font-size: 13px;
  }

  .pc {
    display: none;
  }
}

/* delighter
------------------------------ */
.delighter {
  transform: translateY(10%);
  opacity: 0;
  transition: .8s;
}

.delighter.started {
  transform: translateY(0);
  opacity: 1;
}


/* receiver-tab
------------------------------ */
.list--receiver {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 2em;
}

.list--receiver li a {
  display: block;
  background: var(--white-color);
  font-size: 14px;
  font-weight: bold;
  color: var(--font-color);
  border: 1px solid var(--font-color);
  border-radius: 30px;
  padding: .5em 1em;
  transition: .3s;
}

.list--receiver li.current a {
  background: var(--font-color);
  color: var(--base-color);
}

@media screen and (min-width: 961px) {
  .list--receiver li:not(.current) a:hover {
    background: var(--soft-color);
  }
}

/* step
------------------------------ */
.step-bar {
  margin: 40px 0 50px;
}

.list--step {
  display: flex;
  justify-content: center;
  gap: 20px;
  max-width: 600px;
  margin-inline: auto;
}

.list--step .step {
  text-align: center;
  width: calc((100% - 60px) / 4);
  position: relative;
}

.list--step .step .step__inner {
  opacity: .3;
}

.list--step .step.step--active .step__inner {
  opacity: 1;
}

.list--step .step + .step::before {
  content: "";
  width: 30px;
  height: 1px;
  background: var(--border-color);
  position: absolute;
}

.list--step .step .step__icon {
  display: inline-block;
  margin-bottom: 5px;
}

.list--step .step .step__txt {
  font-weight: bold;
  white-space: nowrap;
}

@media screen and (min-width: 961px) {
  .list--step .step .step__icon {
    width: 60px;
    height: 60px;
  }

  .list--step .step + .step::before {
    width: 70px;
    top: 30px;
    left: -45px;
  }
}

@media screen and (max-width: 960px) {
  .list--step {
    gap: 10px;
  }

  .list--step .step {
    width: calc((100% - 30px) / 4);
  }

  .list--step .step .step__icon {
    width: 50px;
    height: 50px;
  }

  .list--step .step + .step::before {
    width: 22px;
    top: 25px;
    left: -17px;
  }

  .list--step .step .step__txt {
    font-size: 11px;
  }
}

/* label
------------------------------ */
.label-receiver {
  display: inline-block;
  position: absolute;
  top: -3.2em;
  left: -.8em;
  transform: rotate(-5deg);
}

.label-receiver::before {
  content: "";
  width: 80%;
  height: 60%;
  background: #000;
  filter: blur(3px);
  position: absolute;
  bottom: -3px;
  right: 5px;
  z-index: -1;
  transform: rotate(5deg);
  opacity: .3;
}

.label-receiver p {
  background: var(--white-color);
  border-right: 1em solid var(--soft-color);
  font-size: 14px;
  padding: .5em 2em;
}

.label-receiver p .to {
  font-size: 80%;
  margin-right: 5px;
}

.label-receiver p .name {
  font-weight: 600;
  letter-spacing: .5px;
}

@media screen and (max-width: 960px) {
  .label-receiver p {
    font-size: 13px;
  }
}

/* pagination
------------------------------ */
.pagination {
  margin-top: 40px;
}

.list--pager {
  text-align: center;
}

.list--pager li {
  display: inline-block;
  width: 45px;
  height: 45px;
  line-height: 45px;
  text-align: center;
  margin: 5px;
}

.list--pager li a {
  display: block;
  background: var(--base-color);
}

.list--pager li span {
  display: inline-block;
  color: var(--font-color);
}

.list--pager li a,
.list--pager li .pager__inner {
  border-radius: 50%;
}

.list--pager li.current .pager__inner {
  background: var(--font-color);
}

.list--pager li.current span {
  color: var(--base-color);
}

@media screen and (max-width: 960px) {
  .list--pager li {
    width: 30px;
    height: 30px;
    line-height: 30px;
  }
}

/* page--top
------------------------------ */
.page--top .box {
  margin-bottom: 30px;
}

.list--menu,
.list--box {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
}

.list--menu li {
  text-align: center;
  width: calc((100% - 20px) / 3);
  max-width: 250px;
}

.list--box li {
  text-align: center;
  width: 100%;
  max-width: 520px;
}

.list--menu li a, 
.list--box li .btn--create {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 120px;
  font-weight: bold;
  border: 1px solid;
  border-radius: 5px;
  padding: 1em;
  position: relative;
  overflow: hidden;
  z-index: 0;
}

.list--menu li a {
  color: var(--font-color);
  background: var(--white-color);
  border-color: var(--font-color);
}

.list--box li .btn--create {
  color: var(--white-color);
  background: var(--sub-color);
  border-color: var(--sub-color);
  cursor: pointer;
}

.list--menu li .icon, 
.list--box li .btn--create .icon {
  width: 90px;
  height: 90px;
  position: absolute;
  right: -18px;
  bottom: -12px;
  opacity: .3;
  z-index: -1;
}

.list--box li .btn--create .icon svg {
  fill: white;
}

.list--box li .btn--logo {
  border: none;
  background: none;
}

.list--box li .btn--logo p {
  font-weight: bold;
  text-decoration: underline;
  margin-top: 5px;
}

.btn-container--create {
  margin-top: 0;
}

@media screen and (min-width: 961px) {
  .list--menu li a, 
  .list--box li .btn--create,
  .list--box li .btn--logo {
    transition: .3s;
  }

  .list--menu li a:hover, 
  .list--box li .btn--create:hover,
  .list--box li .btn--logo:hover {
    transform: translateY(-5px);
  }
}

@media screen and (max-width: 960px) {
  .list--menu li {
    width: calc((100% - 20px) / 2);
  }

  .list--box li {
    width: 100%;
  }
}


/* page--select
------------------------------ */
.page--select input[type="radio"] {
  width: 100%;
  opacity: 0;
  position: absolute;
}

.list--stationery {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 50px;
}

.list--stationery .list__item {
  width: calc((100% - 80px) / 5);
  transition: .3s;
  position: relative;
}

.list--stationery .list__item label {
  display: block;
  cursor: pointer;
  position: relative;
}

.list--stationery .list__item label img {
  border-radius: 5px;
  pointer-events: none;
  box-shadow: 3px 3px 5px rgba(0, 0, 0, 0.1);
}

.list--stationery .list__item.new::before {
  content: "";
  border-left: 40px solid var(--font-color);
  border-bottom: 40px solid transparent;
  border-radius: 5px 0;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
  opacity: .6;
}

.list--stationery .list__item.new::after {
  content: "NEW";
  color: var(--white-color);
  position: absolute;
  top: 8px;
  left: 1px;
  transform: rotate(-45deg);
  font-size: 10px;
  font-weight: bold;
  letter-spacing: 1px;
  z-index: 2;
}

.list--stationery input[type="radio"]:checked + label img {
  outline: 3px solid var(--font-color)
}

.list--stationery input[type="radio"]:checked + label .label__mark::before {
  content: "";
  width: 26px;
  height: 26px;
  background: #000;
  border-radius: 50%;
  position: absolute;
  right: -10px;
  top: -10px;
  z-index: 1;
}

.list--stationery input[type="radio"]:checked + label .label__mark::after {
  content: "\f00c";
  font-family: "Font Awesome 5 Free";
  font-size: 14px;
  font-weight: bold;
  color: white;
  position: absolute;
  right: -3px;
  top: -4px;
  z-index: 2;
}

@media screen and (min-width: 961px) {
  .list--stationery .list__item:hover {
    transform: translateY(-5px);
  }
}

@media screen and (max-width: 960px) {
  .list--stationery .list__item {
    width: calc((100% - 20px) / 2);
  }
}

/* page--input
------------------------------ */
.page--input .form--area {
  text-align: center;
}

.page--input .stationery {
  position: relative;
  margin: 30px 0 0;
}

.page--input .stationery__inner {
  display: grid;
  max-width: 345px;
  margin-inline: auto;
  box-shadow: 3px 3px 5px rgba(0, 0, 0, 0.2);
}

.page--input .stationery__inner img {
  pointer-events: none;
}

.page--input textarea {
  font-size: 14px;
  border: none;
  border-radius: 3px;
  padding: 1em;
}

.page--input .form--message {
  width: 276px;
  position: absolute;
  top: 40px;
  left: 50%;
  transform: translateX(-50%);
}

.page--input .form--message textarea {
  font-family: 'Noto Sans JP', sans-serif;
  max-height: 520px;
  overflow-y: hidden;
  line-height: 1.2;
  background: none;
  padding: 0;
  box-sizing: border-box;
  scrollbar-width: none;
  -ms-overflow-style: none;
  letter-spacing: 0 !important;
  font-kerning: none;
  text-rendering: optimizeSpeed;
}

.page--input .form--message::-webkit-scrollbar {
  display: none;
}

.page--input .notice {
  font-size: 11px;
  margin: 10px 0 30px;
  opacity: .6;
}

.page--input .form--nickname {
  text-align: left;
  margin: 1em auto 2.5em;
  max-width: 345px;
}

.page--input .form--nickname p {
  margin-bottom: .5em;
}

.select--member {
  position: relative;
  display: inline-block;
}

.select--member::before {
  content: "";
  position: absolute;
  top: 1px;
  right: 1px;
  width: 40px;
  height: calc(100% - 2px);
  background: var(--font-color); 
  pointer-events: none;
  border-radius: 0 3px 3px 0;
}

.select--member::after{
  content: "";
  position: absolute;
  top: calc(50% - 4px);
  right: 15px;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-top: 8px solid var(--white-color);
  pointer-events: none;
}

.select--member select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  width: auto;
  height: 40px; 
  color: var(--font-color);
  background: var(--white-color);
  border: 1px solid var(--font-color);
  padding: 0 55px 0 15px;
  border-radius: 5px;
  cursor: pointer;
}



/* page--decorate
------------------------------ */
.page--decorate .container {
  text-align: center;
  min-width: 375px;
}

.canvas .notice {
  font-size: 90%;
  margin-top: .5em;
  opacity: .6;
}

.canvas__inner {
  display: inline-block;
  position: relative;
  margin: 2.5em 0 auto;
  width: 100%;
  max-width: 345px;
}

#canvas-area img {
  pointer-events: none;
}

.decorate {
  max-width: 345px;
  margin: 20px auto 0;
}

.decorate .decorate__inner {
  display: flex;
  justify-content: center;
  gap: 5%;
}

.decorate .img-notice {
  text-align: left;
  font-size: 10px;
  margin: .5em 0 2em;
  opacity: .6;
}

.decorate .icon {
  width: 50px;
  height: 50px;
  margin: 0 auto 5px;
}

.decorate__block {
  width: 50%;
  max-width: 180px;
  border: 1px solid var(--font-color);
  border-radius: 5px;
  background: var(--white-color);
  padding: 10px;
  transition: .3s;
  cursor: pointer;
}

.decorate__block p {
  display: inline-block;
  font-weight: bold;
}

.btn--decorate {
  display: block;
  width: 100%;
  background: none;
  border: none;
  color: var(--font-color);
}

@media screen and (min-width: 961px) {
  .decorate__block:hover {
    transform: translateY(-5px);
  }
}

@media screen and (max-width: 960px) {
  .decorate .icon {
    width: 36px;
    height: 36px;
  }
}


/* page--confirm
------------------------------ */
.page--confirm .preview {
  text-align: center;
  margin-bottom: 2.5em;
}

.preview__inner {
  display: inline-block;
  position: relative;
  margin: 2.5em 0 auto;
  max-width: 345px;
}

.page--confirm .preview__img {
  box-shadow: 3px 3px 5px rgba(0, 0, 0, 0.2);
}

.agree {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 600px;
  margin: 30px auto;
}

.agree__txt {
  padding-right: 2em;
  width: calc(100% - 70px);
}

.agree__toggle {
  text-align: center;
  width: 70px;
  background: var(--base-color);
  border-radius: 30px;
  line-height: 30px; 
  position: relative;
}

.agree__toggle input[type="checkbox"] {
  display: none;
}

.agree__toggle label {
  display: block;
  box-sizing: border-box;
  height: 30px;
  border: 2px solid #aaa;
  border-radius: 30px;
  line-height: 26px;
  cursor: pointer;
}

.agree__toggle input[type="checkbox"]:checked +label {
  border-color: var(--sub-color);
}

.agree__toggle label span::after {
  content: "OFF";
  font-size: 13px;
  font-weight: bold;
  color: #aaa;
  padding: 0 0 0 22px;
}

.agree__toggle input[type="checkbox"]:checked + label span::after {
  content: "ON";
  font-size: 13px;
  font-weight: bold;
  color: var(--sub-color);
  padding: 0 22px 0 0;
}

.agree__toggle .agree-switch {
  position: absolute;
  width: 22px;
  height: 22px;
  background: #aaa;
  top: 4px;
  left: 4px;
  border-radius: 50%;
  transition: .2s;
}

.agree__toggle input[type="checkbox"]:checked ~ .agree-switch {
  transform: translateX(40px);
  background: var(--sub-color);
}

/* page--send_complete
------------------------------ */
.page--send_complete .image {
  text-align: center;
  margin-top: -50px;
  margin-bottom: 50px;
}

.page--send_complete .image .thumb {
  display: inline-block;
}

/* page--list
------------------------------ */
.page--list .list--content {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.page--list .list--content li {
  height: 100%;
  position: relative;
  border: 1px solid var(--border-color);
  border-radius: 5px;
  box-shadow: 3px 3px 5px rgba(0, 0, 0, 0.1);
  background: var(--white-color);
  overflow: hidden;
}

.page--list .list--content li .content__txt {
  padding: 2em;
}

.page--list .list--content li .content__txt .receiver {
  margin-bottom: 5px;
}

.page--list .list--content li .content__txt .receiver .to {
  font-size: 90%;
  margin-right: 5px;
}

@media screen and (min-width: 961px) {
  .page--list .list--content li {
    width: calc((100% - 20px) / 2);
  }
}

@media screen and (max-width: 960px) {
  .page--list .list--content li {
    width: 100%;
  }

  .page--list .list--content li .content__txt {
    font-size: 13px;
    padding: 1em;
  }
}

/* page--draftlist (page--list)
------------------------------ */
.page--draftlist .list--draft {
  gap: 50px 20px;
}

.page--draftlist .list--draft li .box-tit {
  display: inline-block;
  max-width: 85%;
  position: absolute;
  right: 0;
  top: -24px;
  background: var(--border-color);
  color: var(--white-color);
  padding: 5px 1em;
  font-size: 10px;
  border-radius: 5px 5px 0 0;
}

.page--draftlist .list--draft li .box-tit span {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 1;
  overflow: hidden;
}

.page--draftlist .list--draft li .content {
  display: flex;
}

.page--draftlist .list--draft li .list__inner {
  border-radius: 5px 0 5px 5px;
}

.page--draftlist .list--draft li .content__img {
  width: 40%;
  border-right: 1px solid var(--border-color);
}

.page--draftlist .list--draft li .content__txt {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 60%;
}

.page--draftlist .list--draft li .content__txt .receiver {
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1em;
  padding-bottom: 5px;
}

.page--draftlist .list--draft li .content__txt .letter-body {
  font-size: 13px;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 8;
  overflow: hidden;
}

.page--draftlist .list--draft li .content__txt .date {
  display: flex;
  align-items: center;
  font-size: 13px;
  margin-top: 1em;
}

.page--draftlist .list--draft li .content__txt .date .update {
  display: inline-block;
  font-size: 9px;
  background: var(--font-color);
  color: var(--white-color);
  letter-spacing: -.3px;
  margin-right: 5px;
  padding: 2px 3px;
}

.page--draftlist .list--draft li .draft__btn {
  display: flex;
  justify-content: center;
  align-items: center;
}

.page--draftlist .list--draft li .btn-container--edit {
  width: calc(100% - 35px);
  max-width: 200px;
  padding-right: 1.5em;
}

.page--draftlist .list--draft li .btn--edit {
  width: 100%;
  height: 35px;
  line-height: 35px;
  padding: 0;
}

.page--draftlist .list--draft li .btn--delete {
  width: 35px;
  height: 35px;
  display: flex;
  justify-content: center;
  align-items: center;
}

@media screen and (min-width: 961px) {
  .page--draftlist .list--draft li .content__txt .receiver {
    font-size: 14px;
  }
}

@media screen and (max-width: 960px) {
  .page--draftlist .list--draft li .content__txt .letter-body {
    font-size: 12px;
    -webkit-line-clamp: 6;
  }

  .page--draftlist .list--draft li .content__txt .date {
    font-size: 12px;
  }
}

/* page--sendlist (page--list)
------------------------------ */
.page--sendlist .receiver {
  margin-bottom: 2em;
}

.page--sendlist .list--send li {
  transition: .3s;
}

.page--sendlist .list--send li .list__inner {
  position: relative;
}

.page--sendlist .list--send li a {
  display: block;
  color: var(--font-color);
}

.page--sendlist .list--send li a .thumb img {
  width: 100%;
}

.page--sendlist .list--send li .send__txt {
  width: 100%;
  position: absolute;
  bottom: 0;
  left: 0;
  color: var(--white-color);
  background: color-mix(in srgb, var(--font-color) 70%, transparent);
  padding: 1em;
}

.page--sendlist .list--send li .send__txt p {
  font-size: 11px;
  line-height: 1.3;
  position: relative;
}

.page--sendlist .list--send li .send__txt p + p {
  margin-top: .5em;
}

.page--sendlist .list--send li .send__txt p span {
  display: inline-block;
  padding-left: 1.3em;
}

.page--sendlist .list--send li .send__txt i {
  position: absolute;
  line-height: 1.3;
  opacity: .7;
}

@media screen and (min-width: 961px) {
  .page--sendlist .list--send li {
    width: calc((100% - 60px) / 3);
  }

  .page--sendlist .list--send li:hover {
    transform: translateY(-5px);
  }
}

@media screen and (max-width: 960px) {
  .page--sendlist .list--send li {
    width: calc((100% - 20px) / 2);
  }
}

/* page--send-detail
------------------------------ */
.page--send-detail .letter__inner {
  max-width: 400px;
  margin-inline: auto;
}

.page--send-detail .letter__inner .thumb {
  text-align: center;
  box-shadow: 3px 3px 5px rgba(0, 0, 0, 0.2);
}

.page--send-detail .letter__inner .thumb img {
  width: 100%;
}

.page--send-detail .letter__inner .txt-container {
  background: var(--white-color);
  border: 1px solid var(--border-color);
  border-radius: 5px;
  margin-top: 1em;
  padding: 1em;
}

.page--send-detail .letter__inner p + p {
  margin-top: 5px;
}

.page--send-detail .letter__inner p i {
  margin-right: 4px;
  opacity: .7;
}


/* footer
------------------------------ */
footer {
  margin-top: 80px;
}

footer .footer--inner {
  text-align: center;
  padding: 2em 1em;
}

footer .copyright {
  font-size: 70%;
  opacity: .7;
}


/* page--artist-letter
------------------------------ */
.page--artist-letter .container::before, 
.page--artist-letter .container::after {
  content: none;
}

.page--artist-letter .list--letter {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 25px 15px
}

.page--artist-letter .letter-card {
  cursor: pointer;
}

.page--artist-letter .letter-image img {
  width: 100%;
  border-radius: 5px;
  box-shadow: 3px 3px 5px rgba(0, 0, 0, 0.2);
}

.page--artist-letter .letter-card .letter-info {
  margin-top: 1em;
}

.page--artist-letter .letter-info p {
  color: var(--font-color);
}

.page--artist-letter .letter-info p span {
  font-size: 80%;
  margin-right: 5px;
}

.page--artist-letter .letter-info .receiver {
  font-weight: bold;
}

.page--artist-letter .letter-info .receiver span  {
  opacity: .6;
}

.page--artist-letter .no-image {
  width: 100%;
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--border-color);
  color: var(--white-color);
  border-radius: 5px;
  font-size: 14px;
  box-shadow: 3px 3px 5px rgba(0, 0, 0, 0.2);
}

.page--artist-letter .modal {
  display: none;
  position: fixed;
  z-index: 999;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0,0,0,0.6);
}

.page--artist-letter .modal-content {
  margin: auto;
  display: block;
  max-width: 90%;
  padding-top: 80px;
  position: relative;
}

.page--artist-letter .modal-content .letter-info {
  position: absolute;
  bottom: 1em;
  left: 1em;
}

.page--artist-letter .modal-content .letter-info p {
  color: var(--white-color);
  text-shadow: 0 0 2px rgba(0, 0, 0, 0.5);
}

.page--artist-letter .modal-content .letter-info .nickname {
  font-size: 12px;
  font-weight: bold;
}

.page--artist-letter .modal-content .letter-info .nickname .from {
  opacity: .8;
}

.page--artist-letter .modal-content .letter-info .date {
  font-size: 10px;
  margin-top: 5px;
}

.page--artist-letter .close {
  position: absolute;
  top: 30px;
  right: 5%;
  color: #fff;
  font-size: 40px;
  font-weight: bold;
  cursor: pointer;
  z-index: 100;
}

.page--artist-letter .read-boundary {
  grid-column: 1 / -1;
  text-align: center;
  background: var(--border-color);
  color: #fff;
  border-radius: 30px;
  font-size: 10px;
  height: 16px;
  line-height: 16px;
}

.page--artist-letter .read-boundary span::before {
  content: "\f058";
  font-family: "Font Awesome 5 Free";
  font-weight: bold;
  margin-right: 3px;
}