.site-header {
    position: sticky;
    top: 0;
    z-index: 90;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(203, 213, 225, 0.82);
}
.site-header__inner {
    display: grid;
    grid-template-columns: minmax(220px, 320px) minmax(0, 1fr) auto auto;
    gap: 14px;
    align-items: center;
    min-height: 56px;
    padding: 8px 0;
}
.site-branding {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}
.site-branding__logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    min-height: 40px;
    min-width: 40px;
}
.site-branding__logo img,
.site-branding__logo .custom-logo {
    display: block;
    width: auto;
    max-width: 130px;
    max-height: 42px;
}
.site-branding__meta {
    display: grid;
    gap: 1px;
    min-width: 0;
}
.site-branding__title {
    display: none;
    font-size: 0.95rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    color: var(--gptc-text);
}
.site-branding__logo-text {
    font-size: 1rem;
    font-weight: 800;
    letter-spacing: -0.04em;
}
.site-branding__subline {
    display: block;
    color: var(--gptc-text);
    font-size: 0.82rem;
    line-height: 1.15;
    font-weight: 700;
}
.site-branding__note {
    display: block;
    color: var(--gptc-text-soft);
    font-size: 0.72rem;
    line-height: 1.2;
}
.site-nav {
    min-width: 0;
}
.menu {
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 4px;
    margin: 0;
    padding: 0;
}
.menu li { margin: 0; }
.menu a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 34px;
    padding: 0 12px;
    border-radius: 999px;
    color: var(--gptc-text-soft);
    font-weight: 700;
    font-size: 0.91rem;
    white-space: nowrap;
}
.menu a:hover,
.menu .current-menu-item > a,
.menu .current_page_item > a,
.menu .current-menu-ancestor > a {
    color: var(--gptc-primary-dark);
    background: #edf4ff;
}
.site-header__actions {
    display: flex;
    gap: 8px;
    align-items: center;
    justify-content: flex-end;
}
.site-header__actions .gptc-button {
    min-height: 36px;
    padding: 0 14px;
}
.site-header__actions .gptc-button--small {
    font-size: 0.87rem;
}
.site-header__toggle {
    display: none;
    appearance: none;
    border: 1px solid var(--gptc-border);
    background: #ffffff;
    width: 40px;
    height: 40px;
    border-radius: 14px;
    padding: 0;
    align-items: center;
    justify-content: center;
    gap: 2px;
    flex-direction: column;
    cursor: pointer;
}
.site-header__toggle span:not(.screen-reader-text) {
    width: 18px;
    height: 2px;
    background: var(--gptc-text);
    border-radius: 999px;
}
.site-footer {
    margin-top: 52px;
    border-top: 1px solid var(--gptc-border);
    background: rgba(255,255,255,0.78);
}
.site-footer__inner {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(320px, .9fr);
    gap: 28px;
    padding: 28px 0 34px;
}
.site-footer__brand strong { font-size: 1.1rem; letter-spacing: -0.03em; }
.site-footer__brand p { margin: 10px 0 0; color: var(--gptc-text-soft); max-width: 58ch; }
.site-footer__cols { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.site-footer__title { display: inline-flex; margin-bottom: 10px; font-size: .86rem; color: var(--gptc-text-soft); text-transform: uppercase; letter-spacing: .08em; font-weight: 800; }
.site-footer__list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.site-footer__list a { color: var(--gptc-text-soft); }
.site-footer__list a:hover { color: var(--gptc-primary-dark); }

@media (max-width: 1220px) {
    .site-header__inner {
        grid-template-columns: minmax(210px, 290px) minmax(0, 1fr) auto auto;
    }
    .site-branding__note {
        display: none;
    }
}
@media (max-width: 1080px) {
    .site-header__inner {
        grid-template-columns: 1fr auto auto;
        min-height: 54px;
    }
    .site-nav {
        position: fixed;
        top: 64px;
        right: 12px;
        left: 12px;
        background: rgba(255,255,255,0.98);
        border: 1px solid var(--gptc-border);
        border-radius: 22px;
        box-shadow: var(--gptc-shadow);
        padding: 16px;
        opacity: 0;
        pointer-events: none;
        transform: translateY(-8px);
        transition: opacity .2s ease, transform .2s ease;
    }
    .nav-open .site-nav {
        opacity: 1;
        pointer-events: auto;
        transform: translateY(0);
    }
    .site-nav .menu {
        flex-direction: column;
        align-items: stretch;
    }
    .site-nav .menu a {
        justify-content: flex-start;
        width: 100%;
    }
    .site-header__toggle {
        display: inline-flex;
    }
}
@media (max-width: 768px) {
    .site-header__inner {
        gap: 8px;
        min-height: 52px;
        padding: 6px 0;
    }
    .site-branding__logo img,
    .site-branding__logo .custom-logo {
        max-width: 114px;
        max-height: 36px;
    }
    .site-branding__subline {
        font-size: 0.76rem;
    }
    .site-branding__note {
        display: none;
    }
    .site-header__actions .gptc-button--ghost,
    .site-header__actions .gptc-button--soft {
        display: none;
    }
    .site-nav {
        top: 58px;
    }
    .site-footer__inner,
    .site-footer__cols {
        grid-template-columns: 1fr;
    }
}