.nav-mega { position: relative; display: inline-flex; align-items: center; }
.nav-mega-trigger { display: inline-flex; align-items: center; gap: 5px; cursor: pointer; text-decoration: none; }
.nav-mega-trigger svg { width: 11px; height: 11px; transition: transform .2s ease; }
.nav-mega::before { content: ''; position: absolute; top: 100%; left: -24px; right: -24px; height: 18px; }
.nav-mega-panel {
    position: absolute; top: calc(100% + 16px); left: 50%; transform: translateX(-50%) translateY(6px);
    min-width: 900px; max-width: 94vw; background: var(--bg-elevated, #fff); border: 1px solid var(--border, #e6e6e6);
    padding: 20px; box-shadow: 0 24px 60px rgba(0, 0, 0, .14); font-family: var(--font-sans);
    opacity: 0; visibility: hidden; transition: opacity .16s ease, transform .16s ease; z-index: 200;
}
.nav-mega:hover .nav-mega-panel, .nav-mega:focus-within .nav-mega-panel, .nav-mega.open .nav-mega-panel { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.nav-mega:hover .nav-mega-trigger svg, .nav-mega.open .nav-mega-trigger svg { transform: rotate(180deg); }
.nav-mega-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px 20px; }
.nav-mega-item { display: flex; align-items: center; gap: 14px; padding: 12px 14px; text-decoration: none; color: var(--text, #111); transition: background .14s ease; }
.nav-mega-item:hover { background: var(--accent-bg, rgba(63, 124, 192, .09)); }
.nav-mega-icon { flex: 0 0 auto; width: 42px; height: 42px; display: grid; place-items: center; background: var(--bg-elevated, #fff); font-weight: 700; font-size: 13px; letter-spacing: .02em; color: var(--accent, #3f7cc0); overflow: hidden; }
.nav-mega-icon img { width: 100%; height: 100%; object-fit: contain; }
.nav-mega-name { font-family: var(--font-sans); font-weight: 400; font-size: 13px; line-height: 1.25; }
.mobile-menu a, .mobile-mega > summary, .mobile-mega-link { font-family: var(--font-sans); }
.mobile-mega { border-bottom: 1px solid var(--border); }
.mobile-mega > summary { list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between; padding: 16px 0; font-size: 18px; font-weight: 700; color: var(--text); }
.mobile-mega > summary::-webkit-details-marker { display: none; }
.mobile-mega > summary::after { content: '+'; font-size: 20px; font-weight: 400; opacity: .5; }
.mobile-mega[open] > summary::after { content: '\2212'; }
.mobile-mega-list { display: flex; flex-direction: column; padding: 2px 0 14px 4px; }
.mobile-mega-link { padding: 11px 0 11px 14px; text-decoration: none; color: var(--text-muted, #555); font-size: 16px; font-weight: 500; border: 0; }
.mega-menu-head { grid-column: 1 / -1; padding: 2px 14px 14px; margin-bottom: 8px; border-bottom: 1px solid var(--border, #ececec); }
.mega-menu-title { display: block; margin: 0; font-size: 12px; font-weight: 700; color: var(--text-muted, #555); text-transform: uppercase; letter-spacing: .08em; }
.mega-menu-subtitle { margin: 5px 0 0; font-size: 13px; font-weight: 400; line-height: 1.45; color: var(--text-muted, #888); text-transform: none; letter-spacing: 0; }