html {
  scroll-behavior: smooth;
}

:root {
  --14px: 0.875rem;
  --15px: 0.9375rem;
  --16px: 1rem;
  --18px: 1.125rem;
  --20px: 1.25rem;
  --24px: 1.5rem;
  --28px: 1.75rem;
  --32px: 2rem;
  --40px: 2.5rem;
  --primaryColor: #D1A867;
  --secondaryColor: #9B9792;
  --bgColor: #202123;
  --textColor: #DCD6CA;
  --subtextColor: #68635A;
  --btmMargin: 100px;
}

body {
  color: var(--textColor);
  background-color: var(--bgColor);
  font-size: 16px;
}


.header {
  background-color: var(--primaryColor);
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.main {
  background-color: var(--bgColor);
  padding-left: 160px;
  padding-right: 160px;
  max-width: 1400px;
  margin: 0 auto;
}

.header_title {
  text-decoration: none;
  color: var(--bgColor);
  font-size: var(--32px);
  padding-left: 40px;
  font-weight: 600;
  white-space: nowrap;
}

.header_title span {
  margin-left: 12px;
}

/* スマホ用メニューボタン */

.menu {
  display: none;
}

/* メニュー */
.gnav {
  width: 100%;
  padding-right: 40px;
}

.gnav_list {
  display: flex;
  flex-direction: row;
  justify-content: flex-end;
  align-items: center;
  color: var(--subtextColor);
  list-style: none;
  gap: 28px 20px;

}

.gnav_item a {
  text-decoration: none;
  color: var(--subtextColor);
  font-size: var(--18px);
}

.cta_item {
  border-radius: 100px;
  padding: 8px 20px;
  background-color: var(--subtextColor);
  display: inline-block;
  text-align: center;
}

.cta_item a {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  color: var(--textColor);
  text-decoration: none;
}

.mv {
  background-image: url(img/mvphoto.jpg);
  display: flex;
  justify-content: right;
  align-items: center;
  height: 60vh;
  width: 100%;
  position: relative;
  background-repeat: no-repeat;
  background-position: center center;
  background-size: cover;
  background-color: rgba(255, 255, 255, 0.3);
  /* 白色度調整 */
  background-blend-mode: darken;
}

.mv_discription {
  text-align: right;
  padding-right: 132px;
  font-weight: bold;
  font-size: var(--40px);
  text-shadow: 0px 4px 4px rgba(0, 0, 0, 0.5);
}

section {
  padding-top: 80px;
  line-height: 200%;
}

h2 {
  font-weight: 700;
  font-size: 32px;
  color: var(--secondaryColor);
  padding-bottom: 4px;
  padding-left: 12px;
  border-bottom: 1px solid;
  margin-bottom: 48px;
}

.introduction {
  display: flex;
  align-items: flex-start;
}

.authorphoto {
  padding-left: 100px;
}

.author {
  padding-bottom: 40px;
}

.history_wrapper {
  display: flex;
  justify-content: flex-start;
}

.history td {
  padding-bottom: 24px;
}

.years {
  width: 120px;
  vertical-align: top;
}

.history_img {
  padding-left: 40px;
}

.links {
  display: flex;
}

.btn {
  background-color: var(--subtextColor);
  color: var(--textColor);
  font-weight: 700;
  padding: 4px 12px;
  margin: 14px;
  width: fit-content;
}

.links a {
  text-decoration: none;
}

.policy li {
  line-height: 300%;
  margin-left: 20px;
}

.books {
  display: flex;
  padding-bottom: 60px;
  ;
}

.books h3 {
  color: var(--primaryColor);
  padding-bottom: 20px;
  font-size: var(--20px);
  font-weight: 700;
}

.books p {
  padding-bottom: 40px;
}

.books a {
  color: var(--secondaryColor)
}

.book_img img {
  max-width: 200px;
  max-height: 400px;
  aspect-ratio: 3/4;
  object-fit: contain;
}

.book_content {
  padding-left: 80px;
}

.ttl {
  color: var(--primaryColor);
}

.zasshi ul {
  padding-left: 40px;
}

.zasshi a {
  color: var(--subtextColor)
}

.zasshi p {
  margin-bottom: var(--btmMargin);
}

.ttl a {
  color: var(--primaryColor);
}

.others ul {
  padding-left: 40px;
  padding-bottom: 40px;
  ;
}

.others a {
  color: var(--subtextColor)
}

.comment ul {
  padding-left: 40px;
  padding-bottom: 40px;
}

.comment a {
  color: var(--subtextColor)
}

.btn_area {
  display: flex;
  justify-content: center;
  padding-bottom: 60px;
}



.footer {
  text-align: center;
  background-color: var(--primaryColor);
  padding-top: 80px;
  color: var(--bgColor);
}

.footer h4 {
  margin: 0 auto;
  max-width: 800px;
  padding-bottom: 12px;
  border-bottom: 1px solid;
  font-size: var(--32px);
  color: var(--bgColor);
}

.footer p {
  padding: 40px 0;
}

.footer img {
  width: 200px;
  height: auto;
  margin-bottom: 40px;
}

.cta_btn {
  border-radius: 100px;
  padding: 12px 80px;
  font-weight: 700;
  background-color: var(--subtextColor);
  display: inline-block;
  text-align: center;
  margin-bottom: var(--btmMargin);
  color: var(--textColor);
}

.cta_btn a {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  color: var(--textColor);
  text-decoration: none;
}

.privacy {
  text-align: right;
  padding-top: 60px;
  padding-bottom: var(--btmMargin);
  padding-right: 40px;
  font-size: var(--14px);
}

.sakuhin_title {
  padding: 0.5rem;
  border-left: 10px solid;
  background-color: var(--subtextColor);
  color: var(--primaryColor);
  font-weight: 700;
  font-size: var(--24px);
  margin: 40px 0;
}

.sakuhin_read {
  border: 1px solid;
  padding: 20px;
  margin: 8px 20px;
}

.sakuhin_img {
  float: right;
  margin: 20px 0 20px 20px;
}

.sakuhin_after {
  text-align: right;
  margin-bottom: 80px;
}

.example h3 {
  padding: 0.5rem;
  border-left: 10px solid;
  color: var(--secondaryColor);
  font-weight: 700;
  font-size: var(--20px);
  margin: 40px 12px;
}

.list {
  margin-bottom: 60px;
}

.list_img {
  float: right;
  margin: 20px 0 20px 20px;
}

.list h3 {
  padding: 0.5rem;
  border-left: 10px solid;
  color: var(--secondaryColor);
  font-weight: 700;
  font-size: var(--20px);
  margin: 40px 12px;
}

.list a {
  color: var(--primaryColor);
}

.list ul {
  list-style: none;
}

.datenumber {
  border-right: 2px solid var(--primaryColor);
  padding-right: 8px;
  margin-right: 8px;
}

.contact {
  text-align: center;
}

.contact p {
  margin-bottom: 40px;
  ;
}

.contact img {
  width: 200px;
  height: auto;
  margin-bottom: 40px;
}

/* レスポンシブ */

@media screen and (max-width: 768px) {
  * {
    float: none;
  }

  img {
    max-width: 100%;
    height: auto;
  }

  .main {
    width: 100%;
    padding-left: 0;
    padding-right: 0;
  }

  section {
    padding-left: 8px;
    padding-right: 8px;
  }

  header {
    max-height: 60px;
  }

  .header_title {
    padding-left: 0px;
    font-size: var(--20px);
  }

  .header_title span {
    margin-left: 8px;
  }

  .menu {
    position: relative;
    width: 48px;
    height: 48px;
    display: flex;
    justify-content: center;
    align-items: center;
    outline: none;
    border: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    border-radius: 4px;
    background: var(--subtextColor);
    box-sizing: content-box;
    z-index: 2;
    margin-right: 8px;
  }

  .menu_line {
    position: absolute;
    top: 16px;
    right: 0;
    left: 0;
    margin: auto;
    width: 32px;
    height: 3px;
    background-color: #ffffff;
    border-radius: 2px;
    transition: all 0.3s ease-in-out;
  }

  .menu_line::before,
  .menu_line::after {
    content: "";
    position: absolute;
    display: block;
    width: 100%;
    height: 100%;
    background-color: inherit;
    border-radius: inherit;
    transition: inherit;
  }

  .menu_line::before {
    top: -8px;
  }

  .menu_line::after {
    top: 8px;
  }

  .menu_menu {
    font-size: 0.625rem;
    color: #ffffff;
    position: absolute;
    top: 16px;
    right: 0;
    left: 0;
  }

  .menu_line.is-active {
    background-color: transparent;
  }

  .menu_line.is-active::before,
  .menu_line.is-active::after {
    top: 0;
    background-color: #ffffff;
  }

  .menu_line.is-active::before {
    transform: rotate(45deg);
  }

  .menu_line.is-active::after {
    transform: rotate(-45deg);
  }

  .gnav {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1;
    width: 100vw;
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transform: translateX(100vw);
    transition: all 0.3s linear;
    background-color: var(--primaryColor);
  }

  .gnav.is-active {
    transform: translateX(0);
  }

  .gnav_list {
    display: flex;
    flex-direction: column;
    justify-content: center;
    list-style: none;
  }

  .mv_discription {
    padding-right: 12px;
    font-size: var(--28px);
  }

  .introduction {
    flex-direction: column;
  }

  .authorphoto {
    margin-top: 20px;
    padding: 0;
  }

  .history_wrapper {
    flex-direction: column;
  }

  .history_img {
    padding: 0;
  }

  .links {
    flex-direction: column;
  }

  .books {
    flex-direction: column;
  }

  .book_content {
    padding: 0;
  }

  .book_img {
    margin: 8px auto;
  }

  .links {
    flex-direction: column;
  }

  .header {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 3;
    width: 100vw;
  }
}