/* ======================================
  color setting：色設定
====================================== */
:root {
  --color-main: #0056b9;
  --color-main-svg: invert(19%) sepia(96%) saturate(2468%) hue-rotate(201deg) brightness(91%) contrast(102%);
  --color-main-hover1: #003699;
  --color-main-hover2: #2076d9;
  --color-sub: #00b7b7;
  --color-accent: #f9683d;
  --color-base: #7e9cac;
  --color-base-rgb: 126, 156, 172;
  --color-font: #334861;
  --color-bg: #eef2f5;
  --color-underbar: #fff100;
  --color-grad-blue: linear-gradient(102deg, #0455bd, #04bdbd);
  --color-grad-blue-hover: linear-gradient(102deg, #0455bd -20%, #04bdbd 90%);
  --color-grad-orange: linear-gradient(102deg, #f9683d, #fbb03b);
  --color-grad-orange-hover: linear-gradient(102deg, #f9683d -20%, #fbb03b 90%);
  --color-grad-base: linear-gradient(180deg, #eef2f5, #fff);
  --color-grad-white: linear-gradient(180deg, rgba(255, 255, 255, 1), rgba(255, 255, 255, 0));
  --anime-speed: all 0.3s ease-in-out;
}

/* ======================================
  header
====================================== */
header {
  position: fixed;
  top: 0;
  z-index: 999;
  width: 100%;
  background: #fff;
  box-shadow: 0px 2px 5px rgba(0, 0, 0, 0.3);
}
header .header_inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}
header h1 {
  font-size: 2.2em;
}
header h1 img {
  width: auto;
  height: 55px;
  vertical-align: middle;
}
header h1 .headerlogo_sp {
  display: none;
}
header nav {
  font-size: 1em;
}
header nav span {
  display: block;
  font-size: 0.6em;
  line-height: 1.6;
}
header ul.gnav {
  display: flex;
  justify-content: flex-end;
  text-align: center;
}
header ul.gnav li {
  line-height: 1.6;
  letter-spacing: 1px;
}
header ul.gnav li::after {
  content: "";
  display: block;
  position: relative;
  bottom: 5px;
  width: 100%;
  height: 5px;
  transition: var(--anime-speed);
}
header ul.gnav li:hover::after {
  background: var(--color-main);
}
header ul.gnav li.info {
  color: #fff;
  background: var(--color-main);
  transition: var(--anime-speed);
}
header ul.gnav li.info:hover {
  background: var(--color-main-hover1);
}
header ul.gnav li.info:hover::after {
  background: var(--color-main-hover2);
}
header ul.gnav li.info a,
header ul.gnav li.info span {
  color: #fff;
}
header ul.gnav li.info a:before {
  content: "";
  display: inline-block;
  margin: 0 5px -1px 0;
  width: 24px;
  height: 16px;
  background-image: url(https://www.i3-digital.com/files/user/i3d_assets/img/header/mail_icon.png) !important;
}
header ul.gnav a,
header ul.gnav label {
  display: block;
  height: 100%;
  padding: 10px 15px;
  color: var(--color-font);
  text-decoration: none;
  font-weight: 500;
  line-height: 1.6;
}
header ul.gnav a:hover,
header ul.gnav label:hover {
  color: var(--color-main);
}
header ul.gnav input[type=checkbox] {
  display: none;
}
header .gnav > li:hover .child {
  max-height: 999px;
}
header ul.child {
  position: absolute;
  width: 280px;
  max-height: 0;
  overflow: hidden;
  font-size: 0.85em;
  text-align: left;
  background: var(--color-grad-blue);
  box-shadow: 0px 2px 5px rgba(0, 0, 0, 0.3);
  transition: var(--anime-speed);
}
header ul.child li:hover {
  background: rgba(255, 255, 255, 0.2);
}
header ul.child li:after {
  content: none;
}
header ul.child li:hover::after {
  content: none;
}
header ul.child a {
  padding: 15px 20px 15px 30px;
  color: #fff;
  transition: var(--anime-speed);
}
header ul.child a:hover {
  margin-left: 0.8em;
  color: #fff;
}
header ul.child a span {
  color: #fff;
}

/* ======================================
  header_sp
====================================== */
.header_nav_btn {
  display: none;
}

@media screen and (max-width: 1000px) {
  main {
    overflow: hidden;
  }
  header {
    height: 50px;
  }
  header a {
    display: inline-flex;
    align-items: center;
    height: 50px;
  }
  header h1 {
    display: inline-block;
    margin-left: 15px;
  }
  header h1 .headerlogo_pc {
    display: none;
  }
  header h1 .headerlogo_sp {
    display: block;
    width: 100%;
    height: 15px;
  }
  header .header_inner {
    display: block;
    position: relative;
  }
  header nav {
    display: block;
    position: absolute;
    right: 0;
    width: 100%;
    height: auto;
    font-size: 1.2em;
    background: #fff;
    box-shadow: 0px 2px 5px rgba(0, 0, 0, 0.3);
    transition-duration: 0.2s;
  }
  header ul.gnav {
    flex-direction: column;
    text-align: left;
  }
  header ul.gnav a,
  header ul.gnav label {
    padding: 10px 30px;
    border-top: 1px solid var(--color-bg);
  }
  header ul.gnav a:hover,
  header ul.gnav label:hover {
    color: unset;
  }
  header ul.gnav li:after {
    content: unset;
  }
  header .header_nav_btn {
    display: block;
    position: fixed;
    top: 0;
    right: 15px;
    z-index: 1000;
    width: 25px;
    height: 50px;
  }
  header .header_nav_btn .menu_trigger {
    display: block;
    position: relative;
    top: 25px;
    left: 0px;
    width: 25px;
    height: 2px;
  }
  header .header_nav_btn .menu_trigger:before, header .header_nav_btn .menu_trigger:after {
    content: "";
    display: block;
    position: absolute;
    width: 20px;
    height: 2px;
    background: var(--color-font);
  }
  header .header_nav_btn .menu_trigger:before {
    transform: rotate(45deg);
    transition: transform 0.4s;
  }
  header .header_nav_btn .menu_trigger:after {
    transform: rotate(-45deg);
    transition: transform 0.4s;
  }
  header .parent label {
    position: relative;
  }
  header .parent input[type=checkbox] + label:after {
    content: "+";
    display: block;
    position: absolute;
    top: 0.6em;
    right: 30px;
    width: 1em;
    font-size: 22px;
    font-weight: bold;
    text-align: center;
    transition: all 0.35s;
  }
  header .parent input[type=checkbox]:checked + label:after {
    transform: rotate(315deg);
  }
  header ul.child {
    display: none;
    position: inherit;
    width: 100%;
    height: auto;
    max-height: 100%;
    background: var(--color-bg);
    box-shadow: unset;
    opacity: 0;
  }
  header ul.child li:hover {
    background: unset;
  }
  header ul.child a {
    padding-left: 50px;
    color: var(--color-font);
  }
  header ul.child a:hover {
    margin-left: unset;
  }
  header ul.child a span {
    color: var(--color-font);
  }
  header #check_SOLUTION:checked ~ ul.child,
  header #check_COMPANY:checked ~ ul.child {
    display: block;
    opacity: 1;
  }
  header.nav_close nav {
    height: 0;
    overflow: hidden;
  }
  header.nav_close .menu_trigger {
    background: var(--color-font);
  }
  header.nav_close .menu_trigger:before, header.nav_close .menu_trigger:after {
    width: 25px;
  }
  header.nav_close .menu_trigger:before {
    top: -10px;
    transform: rotate(0deg);
  }
  header.nav_close .menu_trigger:after {
    top: 10px;
    transform: rotate(0deg);
  }
}