:root { --site-header-height: 80px; }
.site-header { position: fixed; top: 0; left: 0; right: 0; z-index: 50; color: #101b36; background: #fff; border-bottom: 1px solid #13293812; transition: background 180ms, box-shadow 180ms; }
.site-header[data-scrolled] { background: #ffffffed; backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); box-shadow: 0 3px 18px #14243b08; }
.site-header__nav { max-width: 1536px; padding-inline: clamp(24px, 5vw, 88px); margin: 0 auto; }
.site-header__row { display: flex; align-items: center; gap: 40px; height: var(--site-header-height); }
.site-header__logo { flex-shrink: 0; }
.site-header__logo img { display: block; height: 40px; width: auto; }
.site-header__desktop-nav { display: flex; align-items: center; gap: 38px; margin-left: auto; height: 100%; }
.site-header__nav-link { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 0; border: 0; background: none; color: #14203d; font-size: 18px; font-weight: 500; line-height: 1.3; cursor: pointer; transition: color 150ms; }
.site-header__nav-link:hover, .site-header__nav-link[aria-expanded="true"] { color: #367d6a; text-decoration: none; }
.site-header__plan-link { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 23px; border-radius: 100px; background: #d7f2e7; color: #193e33; font-size: 16px; font-weight: 500; white-space: nowrap; transition: background 150ms; }
.site-header__plan-link:hover { background: #c0e9d9; text-decoration: none; }
.site-header a:focus-visible, .site-header button:focus-visible { outline: 2px solid #408c77; outline-offset: 4px; border-radius: 8px; }
.site-header__plan-link:focus-visible { border-radius: 100px; }
.site-header__menu-toggle { display: none; align-items: center; justify-content: center; width: 44px; height: 44px; flex-shrink: 0; padding: 0; border: 0; border-radius: 12px; background: none; color: #14203d; cursor: pointer; }
.site-header__mobile-menu[hidden], .mobile-services__mobile-panel[hidden] { display: none; }

.mobile-services { position: relative; display: flex; align-items: center; height: 100%; }
.mobile-services__toggle > svg { transition: transform 180ms; }
.mobile-services__toggle[aria-expanded="true"] > svg { transform: rotate(180deg); }
.mobile-services__popover { position: absolute; top: calc(100% - 8px); right: -24px; width: 390px; max-width: calc(100vw - 48px); padding-top: 16px; opacity: 0; visibility: hidden; pointer-events: none; transform: translateY(-6px); transition: opacity 180ms, transform 180ms, visibility 180ms; }
.mobile-services[data-open] .mobile-services__popover { opacity: 1; visibility: visible; pointer-events: auto; transform: translateY(0); }
.mobile-services__panel { padding: 23px 12px 12px; border: 1px solid #dce6e2; border-radius: 24px; background: linear-gradient(145deg, #fff, #f5f9f7); box-shadow: 0 20px 60px #091a3026, 0 4px 12px #091a3008; }
.mobile-services__intro { padding: 0 14px 17px; margin: 0 0 4px; border-bottom: 1px solid #dde7e3; }
.mobile-services__intro > span { color: #538274; font-size: 10px; font-weight: 600; letter-spacing: 0.16em; }
.mobile-services__intro > p { margin: 5px 0 0; color: #172e2e; font-size: 22px; font-weight: 500; line-height: 1.3; letter-spacing: -0.035em; }
.mobile-services__links { display: grid; gap: 2px; }
.mobile-services__link { display: flex; align-items: center; gap: 14px; min-height: 78px; padding: 12px; border-radius: 15px; color: #14203d; transition: background 150ms; }
.mobile-services__link:hover, .mobile-services__link:focus-visible { background: #e9f4ee; text-decoration: none; }
.mobile-services__icon { display: grid; place-items: center; flex-shrink: 0; width: 44px; height: 44px; border: 1px solid #cfe4d9; border-radius: 14px; color: #3a705f; background: linear-gradient(145deg, #f5fcf8, #deeee6); box-shadow: inset 0 1px 0 #fff; }
.mobile-services__text { min-width: 0; flex: 1; }
.mobile-services__text > strong { display: block; font-size: 16px; font-weight: 600; line-height: 1.35; letter-spacing: -0.015em; }
.mobile-services__text > span { display: block; margin-top: 4px; color: #677872; font-size: 12px; font-weight: 400; line-height: 1.45; }
.mobile-services__arrow { color: #729186; flex-shrink: 0; transition: transform 150ms; }
.mobile-services__link:hover .mobile-services__arrow { transform: translateX(2px); }

@media (min-width: 1024px) {
    .site-header__mobile-menu { display: none; }
}
@media (min-width: 1024px) and (max-width: 1200px) {
    .site-header__row { gap: 28px; }
    .site-header__desktop-nav { gap: 28px; }
    .site-header__nav-link { font-size: 17px; }
    .site-header__plan-link { font-size: 15px; padding-inline: 20px; }
}
@media (max-width: 1023px) {
    :root { --site-header-height: 72px; }
    .site-header__desktop-nav { display: none; }
    .site-header__row { gap: 16px; }
    .site-header__plan-link { margin-left: auto; min-height: 40px; padding-inline: 18px; font-size: 14px; }
    .site-header__menu-toggle { display: inline-flex; margin-left: auto; }
    .site-header__plan-link + .site-header__menu-toggle { margin-left: 0; }
    .site-header__mobile-menu { max-height: calc(100dvh - var(--site-header-height)); overflow-y: auto; overscroll-behavior: contain; padding: 8px 0 24px; }
    .site-header__mobile-link { display: flex; align-items: center; justify-content: space-between; width: 100%; min-height: 52px; padding: 10px 4px; border: 0; border-bottom: 1px solid #e8eeeb; background: none; color: #14203d; font-size: 18px; font-weight: 500; text-align: left; cursor: pointer; }
    .site-header__mobile-link:hover { color: #367d6a; text-decoration: none; }
    .mobile-services__mobile-panel { margin-top: 10px; padding: 6px; border: 1px solid #e1ebe5; border-radius: 20px; background: #f5f9f7; }
    .mobile-services__link { min-height: 76px; padding: 11px 8px; gap: 12px; }
}
@media (max-width: 420px) {
    .site-header__nav { padding-inline: 18px; }
    .site-header__logo img { height: 35px; }
    .site-header__row { gap: 8px; }
    .site-header__plan-link { padding-inline: 12px; font-size: 12px; }
    .mobile-services__icon { width: 40px; height: 40px; border-radius: 12px; }
    .mobile-services__text > strong { font-size: 15px; }
}
@media (prefers-reduced-motion: reduce) {
    .site-header, .site-header *, .mobile-services__popover { transition: none; }
}