/* site-nav v3 — 强制与首页一致，覆盖子页通用 * 重置 */
.site-nav#navbar,
nav.site-nav {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    z-index: 99999 !important;
    background: rgba(255,255,255,0.95) !important;
    backdrop-filter: blur(12px) !important;
    -webkit-backdrop-filter: blur(12px) !important;
    border-bottom: 1px solid rgba(0,0,0,0.06) !important;
    display: block !important;
    width: 100% !important;
    margin: 0 !important;
    padding: 0 !important;
    box-sizing: border-box !important;
    overflow: visible !important;
}
.site-nav.scrolled { box-shadow: 0 4px 20px rgba(0,0,0,0.08) !important; }
.site-nav .container,
.site-nav .nav-inner {
    max-width: 1200px !important;
    margin: 0 auto !important;
    padding: 0 24px !important;
    box-sizing: border-box !important;
}
.site-nav .nav-inner {
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    height: 86px !important;
    gap: 16px !important;
}
.site-nav .logo {
    display: flex !important;
    align-items: center !important;
    gap: 10px !important;
    flex-shrink: 0 !important;
    text-decoration: none !important;
    margin: 0 !important;
    padding: 0 !important;
}
.site-nav .logo img {
    height: 86px !important;
    width: auto !important;
    max-width: none !important;
    display: block !important;
    margin: 0 !important;
    padding: 0 !important;
    object-fit: contain !important;
}
.site-nav .logo span {
    font-size: 24px !important;
    font-weight: 700 !important;
    color: #1a1a2e !important;
    line-height: 1.2 !important;
    white-space: nowrap !important;
}
.site-nav .nav-links {
    display: flex !important;
    gap: 28px !important;
    align-items: center !important;
    flex-wrap: nowrap !important;
    margin: 0 !important;
    padding: 0 !important;
    list-style: none !important;
}
.site-nav .nav-links > a {
    display: inline-block !important;
    font-size: 15px !important;
    font-weight: 500 !important;
    color: #4a4a6a !important;
    text-decoration: none !important;
    position: relative !important;
    margin: 0 !important;
    padding: 0 !important;
    background: none !important;
    border: none !important;
    white-space: nowrap !important;
}
.site-nav .nav-links > a:hover { color: #1a56db !important; }
.site-nav .nav-links > a::after {
    content: '' !important;
    position: absolute !important;
    bottom: -4px !important;
    left: 0 !important;
    width: 0 !important;
    height: 2px !important;
    background: #1a56db !important;
    transition: width 0.3s !important;
}
.site-nav .nav-links > a:hover::after { width: 100% !important; }
.site-nav .nav-links > a.nav-phone,
.site-nav .nav-links > a.nav-phone:hover {
    color: #1a56db !important;
    font-weight: 600 !important;
}
.site-nav .nav-links > a.nav-phone::after { display: none !important; }

.site-nav .nav-item {
    position: relative !important;
    margin: 0 !important;
    padding: 0 !important;
    display: block !important;
}
.site-nav .nav-parent {
    font-size: 15px !important;
    font-weight: 500 !important;
    color: #4a4a6a !important;
    text-decoration: none !important;
    display: inline-flex !important;
    align-items: center !important;
    gap: 4px !important;
    margin: 0 !important;
    padding: 0 !important;
    background: none !important;
    border: none !important;
    cursor: pointer !important;
    white-space: nowrap !important;
}
.site-nav .nav-item:hover > .nav-parent,
.site-nav .nav-item.open > .nav-parent { color: #1a56db !important; }
.site-nav .caret {
    font-size: 10px !important;
    display: inline-block !important;
    transition: transform 0.2s !important;
}
.site-nav .nav-item:hover .caret,
.site-nav .nav-item.open .caret { transform: rotate(180deg) !important; }
.site-nav .nav-dropdown {
    position: absolute !important;
    top: calc(100% + 12px) !important;
    left: 50% !important;
    transform: translateX(-50%) translateY(6px) !important;
    min-width: 160px !important;
    background: #fff !important;
    border: 1px solid rgba(0,0,0,0.06) !important;
    border-radius: 12px !important;
    box-shadow: 0 12px 32px rgba(15,23,42,0.12) !important;
    padding: 8px !important;
    opacity: 0 !important;
    visibility: hidden !important;
    transition: all 0.2s ease !important;
    z-index: 100000 !important;
    display: block !important;
}
.site-nav .nav-dropdown::before {
    content: '' !important;
    position: absolute !important;
    top: -12px !important;
    left: 0 !important;
    right: 0 !important;
    height: 12px !important;
}
.site-nav .nav-item:hover .nav-dropdown,
.site-nav .nav-item.open .nav-dropdown {
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateX(-50%) translateY(0) !important;
}
.site-nav .nav-dropdown a {
    display: block !important;
    padding: 10px 14px !important;
    border-radius: 8px !important;
    font-size: 14px !important;
    font-weight: 500 !important;
    color: #334155 !important;
    text-decoration: none !important;
    margin: 0 !important;
}
.site-nav .nav-dropdown a::after { display: none !important; }
.site-nav .nav-dropdown a:hover {
    background: #eff6ff !important;
    color: #1a56db !important;
}
.site-nav .nav-toggle {
    display: none !important;
    flex-direction: column !important;
    gap: 5px !important;
    cursor: pointer !important;
    background: none !important;
    border: none !important;
    padding: 4px !important;
    margin: 0 !important;
}
.site-nav .nav-toggle span {
    display: block !important;
    width: 26px !important;
    height: 2.5px !important;
    background: #1a1a2e !important;
    border-radius: 2px !important;
    margin: 0 !important;
    padding: 0 !important;
}
body.has-site-nav {
    padding-top: 86px !important;
    margin: 0 !important;
}

@media (max-width: 1100px) {
    .site-nav .logo span { font-size: 16px !important; }
    .site-nav .nav-links { gap: 16px !important; }
}
@media (max-width: 900px) {
    .site-nav .logo span { font-size: 14px !important; max-width: 42vw; white-space: normal !important; }
    .site-nav .logo img { height: 56px !important; }
    .site-nav .nav-inner { height: 68px !important; }
    body.has-site-nav { padding-top: 68px !important; }
    .site-nav .nav-toggle { display: flex !important; }
    .site-nav .nav-links {
        position: fixed !important;
        top: 68px !important;
        left: 0 !important;
        right: 0 !important;
        background: rgba(255,255,255,0.98) !important;
        flex-direction: column !important;
        align-items: stretch !important;
        padding: 20px 24px !important;
        gap: 16px !important;
        box-shadow: 0 8px 24px rgba(0,0,0,0.08) !important;
        display: none !important;
    }
    .site-nav .nav-links.open { display: flex !important; }
    .site-nav .nav-item { width: 100% !important; }
    .site-nav .nav-parent { width: 100% !important; justify-content: space-between !important; }
    .site-nav .nav-dropdown {
        position: static !important;
        transform: none !important;
        opacity: 1 !important;
        visibility: visible !important;
        display: none !important;
        box-shadow: none !important;
        border: none !important;
        padding: 4px 0 0 12px !important;
        min-width: 0 !important;
    }
    .site-nav .nav-item.open .nav-dropdown { display: block !important; }
}