.site-header{
    position: sticky;
    top: 0;
    z-index: 100;
    height: 66px;
    border-bottom: 1px solid rgba(228,231,236,.8);
    background: rgba(255,255,255,.96);
}
.site-header__inner{
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.wordmark{
    display: inline-flex;
    align-items: center;
    gap: 10px;
    width: max-content;
    color: var(--color-ink);
    font-size: 1rem;
    font-weight: 850;
    letter-spacing: .12em;
}
.wordmark__symbol,.brand-symbol{
    display: grid;
    place-items: center;
    width: 31px;
    height: 31px;
    border-radius: var(--radius-sm);
    color: var(--color-primary-contrast);
    background: var(--color-primary);
    font-weight: 900;
    letter-spacing: -.05em;
}
/* Desktop nav/actions는 1024px 이상에서만 표시되고, 그 아래에서는 mobile-nav가 대신한다. */
.desktop-nav{
    display: none;
}
.desktop-nav a,.mobile-nav > nav > a:not(.button),.site-footer nav a{
    transition: color var(--transition-fast) var(--transition-ease);
}
.desktop-nav a:hover,.site-footer a:hover{
    color: var(--color-primary);
}
.desktop-nav a.active{
    color: var(--color-primary);
}
.desktop-nav a.active::after{
    content: "";
    display: block;
    width: 18px;
    height: 1px;
    margin: 5px auto 0;
    background: var(--color-primary);
}
.desktop-actions{
    display: none;
}
.language-selector{
    position: relative;
}
.language-selector summary{
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    min-width: 92px;
    padding: 9px 10px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    list-style: none;
    background: #fff;
    transition: border-color var(--transition-fast) var(--transition-ease);
}
.language-selector summary::-webkit-details-marker{display:none}
.language-selector__menu{
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    z-index: 120;
    width: 168px;
    padding: 6px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: #fff;
    box-shadow: var(--shadow-card);
}
.language-selector__menu button{
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 9px 10px;
    border: 0;
    border-radius: 7px;
    color: var(--color-ink);
    background: transparent;
    cursor: pointer;
    text-align: left;
    transition: background var(--transition-fast) var(--transition-ease);
}
.language-selector__menu button:hover{
    background: var(--color-surface);
}
.language-selector__menu button.is-selected{
    color: var(--color-primary);
    background: var(--color-primary-soft);
    font-weight: 750;
}
/* Header의 Contact CTA는 공유 .button/.button--secondary를 사용하고, header 맥락에 맞는 compact 크기만 재정의한다. */
.header-contact{
    min-height: auto;
    padding: 9px 17px;
}
.mobile-nav{
    display: block;
}
.mobile-nav > summary{
    width: 42px;
    height: 42px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    padding: 10px;
    cursor: pointer;
    list-style: none;
}
.mobile-nav > summary::-webkit-details-marker{
    display: none;
}
.mobile-nav > summary > span{
    width: 22px;
    height: 2px;
    background: var(--color-ink);
}
.mobile-nav[open] > nav{
    position: fixed;
    top: 66px;
    left: 0;
    right: 0;
    display: flex;
    flex-direction: column;
    padding: 20px 18px 26px;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-card);
}
.mobile-nav > nav > a:not(.button){
    padding: 13px 8px;
    color: var(--color-ink);
    font-weight: 650;
    border-bottom: 1px solid var(--color-border);
}
.mobile-nav > nav > a.active:not(.button){
    color: var(--color-primary);
}
.mobile-nav .language-selector{
    margin: 12px 0 16px auto;
}
.mobile-nav .language-selector__menu{
    position: static;
    width: min(100%, 280px);
    margin-top: 6px;
}
.mobile-nav .header-contact{
    width: 100%;
    justify-content: center;
}
@media(min-width:1024px){
    .site-header{
        height: 76px;
    }
    .site-header__inner{
        display: grid;
        grid-template-columns: 1fr auto 1fr;
    }
    .desktop-nav{
        display: flex;
        gap: 38px;
        font-size: .91rem;
        font-weight: 600;
    }
    .desktop-actions{
        justify-self: end;
        display: flex;
        align-items: center;
        gap: 12px;
        font-size: .88rem;
        font-weight: 700;
    }
    .mobile-nav{
        display: none;
    }
}
.site-footer{
    padding: 72px 0 24px;
    color: var(--color-dark-text-muted);
    background: var(--color-dark);
}
.site-footer__top{
    display: flex;
    justify-content: space-between;
    gap: 4rem;
    padding-bottom: 58px;
}
.wordmark--footer{
    color: #fff;
}
.site-footer__top>div p{
    margin: 22px 0 0;
    font-size: .9rem;
}
.site-footer nav{
    display: flex;
    gap: clamp(3rem,8vw,7rem);
}
.site-footer nav div{
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-width: 70px;
}
.site-footer nav strong{
    margin-bottom: 4px;
    color: #fff;
    font-size: .75rem;
    letter-spacing: .08em;
    text-transform: uppercase;
}
.site-footer nav a{
    font-size: .87rem;
}
/* Portal은 Footer에서만, 상호작용 불가능한 상태 text로만 존재한다. */
.site-footer nav .footer-status{
    font-size: .87rem;
}
.site-footer__bottom{
    display: flex;
    justify-content: space-between;
    padding-top: 22px;
    border-top: 1px solid var(--color-dark-surface-border);
    font-size: .76rem;
}
@media(max-width:760px){
    .site-footer__top{
        display: block;
    }
    .site-footer nav{
        margin-top: 48px;
        gap: 2rem;
        justify-content: space-between;
        flex-wrap: wrap;
    }
    .site-footer__bottom{
        gap: 1rem;
        flex-direction: column;
    }
}
.brand-logo{
    display: block;
    width: auto;
}
.brand-logo--header{
    height: 38px;
}
.brand-logo--footer{
    height: 42px;
}
@media(max-width:760px){
    .brand-logo--header{
        height: 34px;
    }
}