.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 200;
    height: clamp(90px, 6vw, 100px);
    background: var(--gray);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: stretch;
    border-bottom: 1px solid rgba(14, 77, 123, 0.08);
    box-shadow: 0 8px 18px rgba(6, 29, 46, 0.18);
}

.header-logo {
    background: var(--blue);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px clamp(20px, 4vw, 60px) 20px clamp(16px, 3vw, 40px);
    clip-path: polygon(0 0, 100% 0, 82% 100%, 0 100%);
    min-width: clamp(220px, 19vw, 330px);
    flex-shrink: 0;
    position: absolute;
    z-index: 3;
    inset: 0 auto 0 0;
    height: clamp(104px, 7.2vw, 138px);
    filter: drop-shadow(0 8px 8px rgba(6, 29, 46, 0.22));


}

.header-logo img {
    width: clamp(84px, 8.4vw, 130px);
    height: auto;
}

.header-nav {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: clamp(18px, 2.8vw, 46px);
}

.header-nav ul {
    display: flex;
    gap: clamp(20px, 3.2vw, 58px);
    align-items: center;
}

.header-nav li {
    position: relative;
}

.header-nav a {
    font-family: var(--font-h);
    font-size: var(--type-nav);
    font-weight: var(--weight-ui);
    color: var(--text-dark);
    letter-spacing: 0;
    transition: color 0.2s ease;
}

.header-nav a:hover,
.header-nav a.is-active {
    color: var(--blue);
}

.nav-dropdown-trigger {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.header-nav button.nav-dropdown-trigger {
    border: 0;
    padding: 0;
    background: transparent;
    font-family: var(--font-h);
    font-size: var(--type-nav);
    font-weight: var(--weight-ui);
    color: var(--text-dark);
    cursor: pointer;
    transition: color 0.2s ease;
}

.header-nav button.nav-dropdown-trigger:hover {
    color: var(--blue);
}

.nav-dropdown-trigger::after {
    content: "";
    width: 7px;
    height: 7px;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: translateY(-2px) rotate(45deg);
    transition: transform 0.2s ease;
}

.nav-dropdown.is-open .nav-dropdown-trigger::after {
    transform: translateY(2px) rotate(225deg);
}

.header-nav .nav-dropdown-menu {
    position: absolute;
    top: calc(100% + 22px);
    left: 50%;
    min-width: 180px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 12px;
    background: rgba(255,255,255,0.98);
    border: 1px solid rgba(14, 77, 123, 0.12);
    box-shadow: 0 18px 38px rgba(6, 29, 46, 0.16);
    transform: translate(-50%, -8px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
}

.nav-dropdown-menu::before {
    content: "";
    position: absolute;
    left: 50%;
    top: -7px;
    width: 14px;
    height: 14px;
    background: #fff;
    border-left: 1px solid rgba(14, 77, 123, 0.12);
    border-top: 1px solid rgba(14, 77, 123, 0.12);
    transform: translateX(-50%) rotate(45deg);
}

.nav-dropdown.is-open .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translate(-50%, 0);
}

.nav-dropdown-menu li {
    width: 100%;
}

.nav-dropdown-menu a {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 11px 12px;
    color: var(--text-dark);
    background: #f5f7f8;
    font-size: var(--type-caption);
    font-weight: var(--weight-heading);
    border-left: 4px solid transparent;
}

.product-submenu li:nth-child(1) a {
    color: #0E4D7B;
    border-left-color: #0E4D7B;
}

.product-submenu li:nth-child(2) a {
    color: #108D61;
    border-left-color: #108D61;
}

.product-submenu li:nth-child(3) a {
    color: #9F1316;
    border-left-color: #9F1316;
}

.nav-dropdown-menu a:hover,
.nav-dropdown-menu a.is-active {
    color: var(--blue);
    background: #eaf2f7;
}

.product-dot {
    display: block;
    width: 10px;
    height: 10px;
    flex: 0 0 auto;
}

.product-dot-blue {
    background: #0E4D7B;
}

.product-dot-red {
    background: #9F1316;
}

.product-dot-green {
    background: #108D61;
}

.header-social {
    display: flex;
    align-items: center;
    gap: clamp(10px, 1.1vw, 16px);
    padding-right: clamp(20px, 3vw, 54px);
}

.header-social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: clamp(24px, 2.1vw, 32px);
    height: clamp(24px, 2.1vw, 32px);
    border-radius: 50%;
    transition: transform 0.2s ease, filter 0.2s ease;
}

.header-social-link:hover {
    transform: translateY(-2px);
    filter: brightness(1.08);
}

.header-social-link img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: contain;
}

@media (min-width: 916px) and (max-width: 1150px) {
    .header-nav {
        padding-right: clamp(12px, 1.8vw, 24px);
    }

    .header-nav ul {
        gap: clamp(16px, 2.1vw, 28px);
    }

    .header-social {
        gap: 10px;
        padding-right: clamp(14px, 2vw, 28px);
    }

    .header-social-link {
        width: 28px;
        height: 28px;
    }
}

.header-toggle {
    display: none;
    width: 46px;
    height: 46px;
    border: none;
    background: none;
    margin: auto 16px auto auto;
    padding: 0;
    cursor: pointer;
    position: relative;
    z-index: 3;
}

.header-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--blue);
    margin: 5px auto;
    transition: transform 0.25s ease, opacity 0.25s ease;
}

body.nav-open {
    overflow: hidden;
}

@media (max-width: 915px) {
    .site-header {
        height: 80px;
    }

    .header-logo {
        min-width: min(54vw, 210px);
        padding-left: 18px;
        padding-right: 42px;
        height: 82px;
    }

    .header-logo img {
        width: 72px;
    }

    .header-social {
        display: none;
    }

    .header-toggle {
        display: inline-flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }

    .header-nav {
        position: fixed;
        top: 72px;
        left: 10px;
        right: 10px;
        background: rgba(255,255,255,0.97);
        backdrop-filter: blur(10px);
        padding: 14px;
        border: 1px solid rgba(14, 77, 123, 0.10);
        box-shadow: 0 18px 32px rgba(6, 29, 46, 0.14);
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transform: translateY(-10px);
        transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease;
        justify-content: flex-start;
        overflow-y: auto;
        max-height: calc(100vh - 88px);
    }

    .site-header.nav-open .header-nav {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: translateY(0);
    }

    .header-nav ul {
        width: 100%;
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
    }

    .header-nav li {
        width: 100%;
    }

    .header-nav a {
        display: flex;
        align-items: center;
        width: 100%;
        min-height: 46px;
        padding: 12px 14px;
        font-size: var(--type-body-sm);
        background: rgba(214, 217, 235, 0.5);
        border-left: 4px solid transparent;
    }

    .header-nav a:hover,
    .header-nav a.is-active {
        color: var(--blue);
        background: var(--gray);
        border-left-color: var(--blue);
    }

    .nav-dropdown-trigger {
        justify-content: space-between;
    }

    .header-nav button.nav-dropdown-trigger {
        width: 100%;
        min-height: 46px;
        padding: 12px 14px;
        font-size: var(--type-body-sm);
        background: rgba(214, 217, 235, 0.5);
        border-left: 4px solid transparent;
    }

    .nav-dropdown-trigger::after {
        transform: rotate(45deg);
    }

    .nav-dropdown.is-open .nav-dropdown-trigger::after {
        transform: rotate(225deg);
    }

    .header-nav .nav-dropdown-menu {
        position: static;
        min-width: 0;
        width: 100%;
        margin-top: 6px;
        padding: 0 0 0 12px;
        gap: 6px;
        background: transparent;
        border: 0;
        box-shadow: none;
        display: none;
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transform: none;
    }

    .nav-dropdown.is-open .nav-dropdown-menu {
        display: grid;
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: none;
    }

    .nav-dropdown-menu::before {
        display: none;
    }

    .nav-dropdown-menu a {
        min-height: 42px;
        padding: 10px 12px;
        font-size: var(--type-caption);
        background: #fff;
        border-left-width: 3px;
    }

    .site-header.nav-open .header-toggle span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

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

    .site-header.nav-open .header-toggle span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }
}