/* ---- container ---- */
.c-left-nav-container {
  display: flex;
  justify-content: space-between;
}
.c-left-nav-container > .sp-nav {
  display: none;
}
.c-left-nav-container > .nav-col {
  width: 220px;
  padding-top: 110px;
}
.c-left-nav-container > .body-col {
  width: calc(100% - 260px);
}
.c-left-nav-container.accordion-nav > .nav-col {
  width: 248px;
}
.c-left-nav-container.accordion-nav > .body-col {
  width: calc(100% - 304px);
}
.c-left-nav-container.accordion-nav > .body-col > *:first-child {
  margin-top: 110px;
}

@media screen and (max-width: 639px) {
  .c-left-nav-container {
    display: block;
    margin-top: 8.5vw;
  }
  .c-left-nav-container > .sp-nav {
    display: block;
    position: sticky;
    top: 64px;
    z-index: 1;
    transform: translateY(0);
    transition: transform 0.3s ease-out;
  }
  .c-left-nav-container > .sp-nav.is-hidden {
    transform: translateY(-105%);
  }
  .c-left-nav-container > .nav-col {
    width: auto;
    padding-top: 0;
  }
  .c-left-nav-container > .body-col {
    width: auto;
  }
  .c-left-nav-container.accordion-nav > .nav-col {
    width: auto;
  }
  .c-left-nav-container.accordion-nav > .body-col {
    width: auto;
  }
  .c-left-nav-container.accordion-nav > .body-col > *:first-child {
    margin-top: 21.3vw;
  }
}
/* ---- navigation: basic ---- */
.c-left-nav-container > .nav-col ul {
  position: sticky;
  top: 100px;
  border-top: 1px solid #d9d9d9;
}
.c-left-nav-container > .nav-col ul li {
  border-bottom: 1px solid #d9d9d9;
}
.c-left-nav-container > .nav-col ul a {
  display: block;
  position: relative;
  padding: 19px 24px 16px 8px;
  background-color: rgba(234, 234, 234, 0);
  font-size: 1.4rem;
  line-height: 1.4;
  transition: background-color 0.2s ease-out;
}
.c-left-nav-container > .nav-col ul a::after {
  content: "";
  display: block;
  position: absolute;
  right: 6px;
  top: calc(50% - 5px);
  width: 12px;
  height: 10px;
  background: url(../images/icon_arrow.svg) center no-repeat;
}
.c-left-nav-container > .nav-col ul a:hover, .c-left-nav-container > .nav-col ul a:active {
  background-color: rgb(234, 234, 234);
}
.c-left-nav-container > .nav-col ul a:hover::after, .c-left-nav-container > .nav-col ul a:active::after {
  animation: arrow-right 0.5s ease-in-out;
}

@media screen and (max-width: 639px) {
  .c-left-nav-container > .nav-col ul {
    display: none;
  }
}
/* ---- navigation: fixed accordion navigation on SP ---- */
@media screen and (max-width: 639px) {
  .c-left-nav-container > .sp-nav {
    background-color: #fff;
    border-bottom: 1px solid #d9d9d9;
  }
  .c-left-nav-container > .sp-nav > dt {
    position: relative;
    padding: 23px 30px 23px 0;
    border-top: 1px solid #d9d9d9;
    color: #2e2e2e;
    font-size: 1.6rem;
    font-weight: 700;
    line-height: 1.4;
  }
  .c-left-nav-container > .sp-nav > dt button {
    display: block;
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    text-align: left;
    text-indent: -400px;
  }
  .c-left-nav-container > .sp-nav > dt button::before {
    content: "";
    display: block;
    position: absolute;
    right: 0;
    top: calc(50% - 1px);
    width: 12px;
    height: 2px;
    background-color: #2e2e2e;
  }
  .c-left-nav-container > .sp-nav > dt button::after {
    content: "";
    display: block;
    position: absolute;
    right: 0;
    top: calc(50% - 1px);
    width: 12px;
    height: 2px;
    background-color: #2e2e2e;
    opacity: 1;
    transform: rotate(-90deg);
    transition: opacity 0.2s, transform 0.2s;
  }
  .c-left-nav-container > .sp-nav > dt button.is-open::after {
    opacity: 0;
    transform: rotate(0);
  }
  .c-left-nav-container > .sp-nav > dd {
    height: 0;
    overflow: hidden;
    transition: height 0.25s ease-out;
  }
  .c-left-nav-container > .sp-nav > dd ul li {
    border-top: 1px solid #d9d9d9;
  }
  .c-left-nav-container > .sp-nav > dd ul li a {
    display: block;
    padding: 18px 0;
    font-size: 1.4rem;
    line-height: 1.4;
  }
}
/* ---- navigation: accordion ---- */
@media screen and (min-width: 640px) {
  .c-left-nav-container.accordion-nav > .nav-col .heading {
    display: none;
  }
  .c-left-nav-container.accordion-nav > .nav-col ul {
    position: static;
    border-top-style: none;
    padding-top: 10px;
  }
  .c-left-nav-container.accordion-nav > .nav-col ul li {
    margin-top: 10px;
    border-bottom-style: none;
  }
  .c-left-nav-container.accordion-nav > .nav-col ul li:first-child {
    margin-top: 0;
  }
  .c-left-nav-container.accordion-nav > .nav-col ul a {
    display: block;
    padding: 8px 0 8px 12px;
    background-color: transparent;
    font-size: 1.3rem;
    letter-spacing: normal;
    line-height: 1.5;
    transition: background-color 0.2s ease-out;
  }
  .c-left-nav-container.accordion-nav > .nav-col ul a::after {
    content: none;
  }
  .c-left-nav-container.accordion-nav > .nav-col ul a:only-child:hover, .c-left-nav-container.accordion-nav > .nav-col ul a:only-child:active {
    background-color: #f4f4f4;
  }
  .c-left-nav-container.accordion-nav > .nav-col ul ul:not([class]) a {
    padding-left: 32px;
    outline-offset: -1px;
  }
  .c-left-nav-container.accordion-nav > .nav-col ul ul:not([class]) ul:not([class]) {
    padding-top: 8px;
  }
  .c-left-nav-container.accordion-nav > .nav-col ul ul:not([class]) ul:not([class]) a {
    padding-left: 44px;
    outline-offset: -1px;
  }
  .c-left-nav-container.accordion-nav > .nav-col ul ul:not([class]) ul:not([class]) li {
    margin-top: 4px;
  }
  .c-left-nav-container.accordion-nav > .nav-col ul ul:not([class]) ul:not([class]) li:first-child {
    margin-top: 0;
  }
  .c-left-nav-container.accordion-nav > .nav-col ul .submenu-head {
    display: flex;
    background-color: transparent;
    transition: background-color 0.2s ease-out;
  }
  .c-left-nav-container.accordion-nav > .nav-col ul .submenu-head:hover {
    background-color: #f4f4f4;
  }
  .c-left-nav-container.accordion-nav > .nav-col ul .submenu-head a {
    width: calc(100% - 32px);
    padding-right: 8px;
  }
  .c-left-nav-container.accordion-nav > .nav-col ul .submenu-head button {
    display: block;
    position: relative;
    width: 32px;
    margin: 6px 0;
    border-left: 1px solid #ccc;
    overflow: hidden;
    text-indent: -400px;
    outline-offset: -1px;
  }
  .c-left-nav-container.accordion-nav > .nav-col ul .submenu-head button::before {
    content: "";
    display: block;
    position: absolute;
    width: 14px;
    height: 2px;
    top: calc(50% - 1px);
    left: calc(50% - 7px);
    background-color: #2e2e2e;
    transform: rotate(-90deg);
    transition: transform 0.2s ease-out;
  }
  .c-left-nav-container.accordion-nav > .nav-col ul .submenu-head button::after {
    content: "";
    display: block;
    position: absolute;
    width: 14px;
    height: 2px;
    top: calc(50% - 1px);
    left: calc(50% - 7px);
    background-color: #2e2e2e;
  }
  .c-left-nav-container.accordion-nav > .nav-col ul .submenu-head button.is-open::before {
    transform: rotate(0deg);
  }
  .c-left-nav-container.accordion-nav > .nav-col ul .submenu-body {
    height: 0;
    overflow: hidden;
    transition: height 0.3s ease-out;
  }


}
@media screen and (max-width: 639.99px) {
  .c-left-nav-container.accordion-nav > .nav-col {
    margin-top: 8.5vw;
    padding: calc(5vw + 8px) 6.5vw calc(5vw + 10px);
    border-radius: 12px;
    background-color: #f4f4f4;
  }
  .c-left-nav-container.accordion-nav > .nav-col .heading {
    margin-bottom: 24px;
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    line-height: 1.3;
    text-align: center;
    text-transform: uppercase;
  }
  .c-left-nav-container.accordion-nav > .nav-col ul {
    display: block;
    border-top-style: none;
  }
  .c-left-nav-container.accordion-nav > .nav-col ul li {
    margin-top: 20px;
    border-bottom-style: none;
  }
  .c-left-nav-container.accordion-nav > .nav-col ul li:first-child {
    margin-top: 0;
  }
  .c-left-nav-container.accordion-nav > .nav-col ul li a {
    display: inline-block;
    position: relative;
    padding: 0 25px 0 0;
    color: #2e2e2e;
    font-size: 1.5rem;
    line-height: 1.4;
    opacity: 1;
    transition: opacity 0.2s;
  }
  .c-left-nav-container.accordion-nav > .nav-col ul li a::after {
    content: "";
    display: block;
    position: absolute;
    right: 0;
    top: calc(50% - 6px);
    width: 12px;
    height: 10px;
    background: url(../images/icon_arrow.svg) center no-repeat;
    transform: translate3d(0, 0, 0) rotate(90deg);
  }
  .c-left-nav-container.accordion-nav > .nav-col ul li a:hover::after, .c-left-nav-container.accordion-nav > .nav-col ul li a:active::after {
    animation: arrow-down 0.5s ease-in-out;
  }
  .c-left-nav-container.accordion-nav > .nav-col .submenu-head button {
    display: none;
  }
  .c-left-nav-container.accordion-nav > .nav-col .submenu-body {
    display: none;
  }
}