/* 메인·서브 공통 모바일 내비게이션 */
@media (max-width: 760px) {
  body.menu-open {
    overflow: hidden;
    touch-action: none;
  }

  header {
    background: var(--smoke);
    backdrop-filter: none;
  }

  header .nav {
    position: relative;
    z-index: 2;
  }

  header .menu-toggle {
    position: relative;
    z-index: 2;
    display: flex;
    width: 42px;
    height: 42px;
    padding: 0;
    flex: 0 0 42px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    border: 1px solid var(--line);
    border-radius: 50%;
    background: var(--smoke);
    cursor: pointer;
    transition: border-color .2s ease, background .2s ease;
  }

  header .menu-toggle:focus-visible {
    border-color: var(--ember);
    outline: 2px solid rgba(170, 84, 37, .18);
    outline-offset: 2px;
  }

  header .menu-toggle span {
    display: block;
    width: 16px;
    height: 1px;
    background: var(--ash);
    transition: transform .25s ease, opacity .18s ease;
  }

  header .menu-toggle.is-open span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  header .menu-toggle.is-open span:nth-child(2) {
    opacity: 0;
  }

  header .menu-toggle.is-open span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  header nav#main-menu {
    position: fixed;
    z-index: 1;
    top: 68px;
    right: 0;
    bottom: 0;
    left: 0;
    width: 100%;
    height: calc(100dvh - 68px);
    max-height: none;
    overflow-x: hidden;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-8px);
    background: var(--smoke);
    border-top: 1px solid var(--line);
    box-shadow: 0 20px 36px rgba(77, 48, 28, .09);
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
    transition: opacity .22s ease, visibility .22s ease, transform .28s ease;
  }

  header nav#main-menu.is-open {
    max-height: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
  }

  header nav#main-menu .menu,
  header nav#main-menu.is-open .menu {
    display: flex;
    width: min(100%, 620px);
    min-height: 100%;
    margin: 0 auto;
    padding: 12px 20px max(28px, env(safe-area-inset-bottom));
    flex-direction: column;
    gap: 0;
    color: var(--ash);
    font-size: 16px;
  }

  header nav#main-menu .menu-item {
    flex: 0 0 auto;
    border-bottom: 1px solid var(--line);
  }

  header nav#main-menu .menu-item > a {
    display: flex;
    min-height: 58px;
    padding: 16px 4px;
    align-items: center;
    justify-content: space-between;
    color: var(--ash);
    font-family: var(--body);
    font-size: 16px;
    font-weight: 600;
    line-height: 1.5;
  }

  header nav#main-menu .menu-item > a::after {
    display: block;
    flex: 0 0 auto;
    transition: transform .22s ease, color .22s ease;
  }

  header nav#main-menu .menu-item:hover .submenu,
  header nav#main-menu .menu-item:focus-within .submenu {
    max-height: 0;
    padding-block: 0;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }

  header nav#main-menu .submenu {
    position: static;
    display: block;
    min-width: 0;
    max-height: 0;
    margin: 0;
    padding: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: none !important;
    background: var(--smoke-2);
    border: 0;
    border-radius: 10px;
    box-shadow: none;
    transition: max-height .3s ease, padding .3s ease, opacity .2s ease, visibility .2s ease;
  }

  header nav#main-menu .menu-item.is-open .submenu,
  header nav#main-menu .menu-item.is-open:hover .submenu,
  header nav#main-menu .menu-item.is-open:focus-within .submenu {
    max-height: 320px;
    margin-bottom: 12px;
    padding: 7px 0;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  header nav#main-menu .submenu a {
    position: relative;
    display: block;
    padding: 10px 16px 10px 28px;
    color: var(--ash-dim);
    font-size: 14px;
    line-height: 1.5;
  }

  header nav#main-menu .submenu a::before {
    position: absolute;
    top: 50%;
    left: 15px;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--ember);
    content: '';
    transform: translateY(-50%);
  }

  header nav#main-menu .menu-item.is-open > a {
    color: var(--ember);
  }

  header nav#main-menu .menu-item.is-open > a::after {
    color: var(--ember);
    transform: rotate(225deg) translate(-1px, -1px);
  }

  header nav#main-menu .menu-mobile-cta {
    display: block;
    margin-top: auto;
    padding-top: 26px;
    border: 0;
  }

  header nav#main-menu .menu-mobile-cta a {
    display: block;
    padding: 14px 20px;
    border: 1px solid var(--ember);
    border-radius: 100px;
    background: var(--ember);
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    line-height: 1.4;
    text-align: center;
  }
}