.site-header {
    position: fixed;
    top: 3px;
    left: 0;
    z-index: 70;
    width: 100%;
    transition: background var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
    background: rgba(10, 10, 10, 0.12);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(245, 240, 232, 0.05);
}

.site-header.is-scrolled {
    background: rgba(10, 10, 10, 0.96);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.28);
}

.site-header__inner {
    min-height: 4.9rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    width: min(calc(100% - 2rem), var(--max-width));
    margin: 0 auto;
}

.site-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.site-brand__mark {
    width: 0.85rem;
    height: 0.85rem;
    border-radius: 999px;
    background: radial-gradient(circle at 30% 30%, #fff3ea, var(--accent));
    box-shadow: 0 0 0 6px rgba(200, 98, 42, 0.08);
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.site-nav__links {
    display: inline-flex;
    align-items: center;
    gap: 1.55rem;
}

.site-nav__item {
    position: relative;
}

.site-nav__link {
    position: relative;
    padding: 0.6rem 0;
    color: rgba(245, 240, 232, 0.82);
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.01em;
}

.site-nav__link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0.08rem;
    width: 100%;
    height: 2px;
    transform: scaleX(0);
    transform-origin: left;
    background: var(--accent);
    transition: transform var(--transition);
}

.site-nav__link:hover,
.site-nav__link.is-active {
    color: var(--text-primary);
}

.site-nav__link.is-active::after,
.site-nav__link:hover::after {
    transform: scaleX(1);
}

.site-nav__dropdown {
    position: absolute;
    top: calc(100% + 0.8rem);
    left: 50%;
    width: 22rem;
    padding: 0.9rem;
    border: 1px solid rgba(245, 240, 232, 0.08);
    border-radius: 1.25rem;
    background: rgba(12, 12, 12, 0.98);
    box-shadow: 0 30px 70px rgba(0, 0, 0, 0.42);
    opacity: 0;
    visibility: hidden;
    transform: translate(-50%, 10px);
    transition: opacity var(--transition), visibility var(--transition), transform var(--transition);
    z-index: 90;
}

.site-nav__item:hover .site-nav__dropdown,
.site-nav__item:focus-within .site-nav__dropdown {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, 0);
}

.site-nav__dropdown-label {
    margin: 0 0 0.8rem;
    color: var(--accent);
    font-size: 0.72rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
}

.site-nav__dropdown-list {
    display: grid;
    gap: 0.45rem;
}

.site-nav__dropdown-link {
    display: block;
    padding: 0.75rem 0.8rem;
    border-radius: 0.85rem;
    background: rgba(255, 255, 255, 0.02);
    color: rgba(245, 240, 232, 0.88);
    line-height: 1.3;
}

.site-nav__dropdown-link:hover {
    background: rgba(200, 98, 42, 0.12);
    color: var(--text-primary);
}

.site-nav__dropdown-link small {
    display: block;
    margin-top: 0.28rem;
    color: var(--text-muted);
    font-size: 0.8rem;
    letter-spacing: 0;
    text-transform: none;
}

.site-nav__toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    border-radius: 999px;
    border: 1px solid rgba(245, 240, 232, 0.12);
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-primary);
}

.site-nav__toggle-lines {
    position: relative;
    width: 1rem;
    height: 0.85rem;
}

.site-nav__toggle-lines span {
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    border-radius: 999px;
    background: currentColor;
    transition: transform var(--transition), top var(--transition), opacity var(--transition);
}

.site-nav__toggle-lines span:nth-child(1) {
    top: 0;
}

.site-nav__toggle-lines span:nth-child(2) {
    top: 0.38rem;
}

.site-nav__toggle-lines span:nth-child(3) {
    top: 0.76rem;
}

body.menu-open .site-nav__toggle-lines span:nth-child(1) {
    top: 0.38rem;
    transform: rotate(45deg);
}

body.menu-open .site-nav__toggle-lines span:nth-child(2) {
    opacity: 0;
}

body.menu-open .site-nav__toggle-lines span:nth-child(3) {
    top: 0.38rem;
    transform: rotate(-45deg);
}

.site-nav__overlay {
    position: fixed;
    inset: 0;
    z-index: 65;
    display: grid;
    place-items: center;
    background: rgba(10, 10, 10, 0.92);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-0.75rem);
    transition: opacity 0.32s ease, visibility 0.32s ease, transform 0.32s ease;
}

.site-nav__panel {
    width: min(calc(100% - 2rem), 28rem);
    padding: 2rem;
    border-radius: 1.75rem;
    border: 1px solid rgba(245, 240, 232, 0.08);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01)), #0f0f0f;
    box-shadow: 0 36px 100px rgba(0, 0, 0, 0.45);
    transform: scale(0.96);
    transition: transform 0.32s ease;
}

.site-nav__mobile-links {
    display: grid;
    gap: 0.85rem;
}

.site-nav__mobile-titles {
    margin-top: 1.5rem;
    display: grid;
    gap: 0.7rem;
}

.site-nav__mobile-titles-label {
    margin-bottom: 0.35rem;
    color: var(--accent);
    font-size: 0.72rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
}

.site-nav__mobile-title {
    display: block;
    padding: 0.9rem 0;
    border-bottom: 1px solid rgba(245, 240, 232, 0.08);
    color: rgba(245, 240, 232, 0.92);
    font-family: var(--font-heading);
    font-size: 1.2rem;
    line-height: 1.25;
}

.site-nav__mobile-title:last-child {
    border-bottom: 0;
}

.site-nav__mobile-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(245, 240, 232, 0.08);
    color: rgba(245, 240, 232, 0.94);
    font-family: var(--font-heading);
    font-size: 1.8rem;
}

.site-nav__mobile-link:last-child {
    border-bottom: 0;
}

.site-nav__mobile-link span {
    color: var(--accent);
    font-size: 0.85rem;
    font-family: var(--font-body);
    text-transform: uppercase;
    letter-spacing: 0.18em;
}

body.menu-open .site-nav__overlay {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

body.menu-open .site-nav__panel {
    transform: scale(1);
}

@media (max-width: 900px) {
    .site-nav__links {
        display: none;
    }

    .site-nav__toggle {
        display: inline-flex;
    }
}

@media (min-width: 901px) {
    .site-nav__overlay {
        display: none;
    }
}