/* Header */
.tai-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 1);
  z-index: 2000;
}

.tai-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--site-header-padding-pc);
  margin: 0 auto;
}

.tai-logo img {
  height: 35px;
  width: auto;
}

.tai-nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.tai-nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 37px;
}

.tai-nav-list > li {
  position: relative;
}

.tai-nav-list a {
  font-family: var(--font-en);
  font-size: 18px;
  font-weight: 500;
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.3s;
  position: relative;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 1;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tai-nav-list a::before {
  content: '';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%) scale(0);
  width: 6px;
  height: 6px;
  background-color: var(--primary-red);
  border-radius: 50%;
  transition: transform 0.3s ease;
}

.tai-nav-list a:hover {
  color: var(--primary-red);
}

.tai-nav-list a:hover::before {
  transform: translateX(-50%) scale(1);
}

.tai-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  background: #fff;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  list-style: none;
  padding: 3px 0;
  margin: 0;
  min-width: 185px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 100;
}

.tai-nav-list > li:hover .tai-dropdown {
  opacity: 1;
  visibility: visible;
  top: calc(100% - 5px);
}

.tai-dropdown li {
  padding: 0;
}

.tai-dropdown a {
  display: block;
  padding: 10px 15px;
  font-size: 15px;
  font-family: var(--font-ja);
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  transition: all 0.3s ease;
}

.tai-dropdown a::before {
  display: none;
}

.tai-dropdown a:hover {
  background-color: #f9f9f9;
  color: var(--primary-red);
}

.tai-contact-btn {
  background-color: var(--primary-red);
  color: #fff !important;
  font-family: var(--font-en);
  font-size: 18px;
  font-weight: 500;
  padding: 2px 30px;
  border-radius: 50px;
  text-decoration: none;
  transition: opacity 0.3s;
}

.tai-contact-btn:hover {
  opacity: 0.8;
}

.tai-hamburger {
  display: none !important;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 5px;
  align-items: flex-end;
  position: relative;
  z-index: 2100;
  transition: all 0.3s;
}

.tai-hamburger span {
  display: block;
  width: 30px;
  height: 1.5px;
  background-color: var(--text-primary);
  transition: all 0.3s;
}

.tai-page-left-line {
  position: fixed;
  left: 0;
  top: 0;
  width: 18px;
  height: 100vh;
  background-color: var(--primary-red);
  z-index: 10010;
}

.tai-hamburger.active span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}

.tai-hamburger.active span:nth-child(2) {
  opacity: 0;
  transform: scale(0);
}

.tai-hamburger.active span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

.mobile-menu {
  position: fixed;
  inset: 0;
  width: auto;
  height: 100vh;
  height: 100dvh;
  min-height: 100svh;
  background-color: #fff;
  z-index: 1990;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  overflow-y: auto;
  overscroll-behavior: contain;
  box-sizing: border-box;
}

.mobile-menu.active {
  transform: translateX(0);
}

.mobile-menu-nav {
  padding: var(--mobile-menu-nav-padding);
  display: none;
  min-height: 100%;
  background-color: #fff;
}

.mobile-menu.active .mobile-menu-nav {
  display: block !important;
}

.mobile-menu-item {
  margin: 0;
  position: relative;
  padding: 22px 0 24px;
  cursor: pointer;
}

.mobile-menu-item:last-child {
  padding-bottom: 8px;
}

.mobile-menu-divider {
  border: none;
  height: 0;
  margin: 0;
  border-top: 1px solid #e5e5e5;
}

.mobile-menu-link {
  font-size: 18px;
  font-weight: 600;
  color: #1a1a1a;
  text-decoration: none;
  display: block;
  padding: 0;
  position: relative;
  transition: color 0.2s ease;
}

.mobile-menu-item > .mobile-menu-link {
  padding-left: 20px;
}

.mobile-menu-item > .mobile-menu-link::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 8px;
  background-color: var(--primary-red);
  border-radius: 50%;
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}

.mobile-menu-item:hover > .mobile-menu-link::before {
  opacity: 1;
}

.mobile-submenu {
  margin-top: 7px;
  padding-left: 20px;
}

.mobile-submenu .mobile-submenu-item {
  margin-bottom: 0;
}

.mobile-submenu .mobile-submenu-link {
  font-size: 14px;
  font-weight: 400;
  color: #666;
  padding: 6px 0;
}

.mobile-submenu--solution {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 20px;
  row-gap: 0;
  align-items: start;
}

.mobile-submenu--solution .mobile-submenu-link {
  line-height: 1.45;
}

.mobile-submenu--technology {
  display: flex;
  flex-wrap: wrap;
  gap: 0 18px;
  align-items: center;
}

.mobile-submenu--technology .mobile-submenu-link {
  white-space: nowrap;
  border: none;
  border-radius: 0;
}

.mobile-submenu-link {
  text-decoration: none;
  display: block;
  transition: all 0.3s ease;
}

.mobile-submenu-link:hover {
  color: #c00000;
}

body.tai-mobile-menu-open {
  overflow: hidden;
  position: fixed;
  width: 100%;
}

body.tai-mobile-menu-open main {
  opacity: 0;
  transition: opacity 0.3s ease;
}

@media screen and (max-width: 991px) {
  .tai-nav-list {
    display: none;
  }

  .tai-page-left-line {
    width: 10px;
  }

  .tai-hamburger {
    display: flex !important;
  }

  .tai-contact-btn {
    display: inline-block;
    font-size: 14px;
    padding: 2px 22px;
    margin-right: 5px;
  }

  .tai-nav {
    gap: 10px;
  }

  .tai-logo img {
    height: 24px;
    margin-left: 15px;
  }

  .mobile-menu {
    border-left: 4px solid var(--primary-red);
  }
}