/* --- 头部导航 --- */
.main-nav { background-color: #FFFFFF; padding: 15px 0; border-bottom: 1px solid #E0E0E0; position: sticky; top: 0; z-index: 1000; box-shadow: 0 2px 5px rgba(0,0,0,0.05); }
.main-nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 50px;
}
.logo a { display: inline-flex; align-items: center; height: 100%; margin-right: 40px; }
.logo img {
    height: 45px;
    width: auto;
    max-width: 220px;
    vertical-align: middle;
}
.logo h1 { font-size: 24px; font-weight: bold; color: var(--primary-blue); margin: 0; line-height: 1; margin-right: 40px; }
.nav-links { display: flex; gap: 55px; align-items: center; margin-right: auto; }
.nav-links a { font-size: 16px; font-weight: 500; color: var(--dark-text); position: relative; padding-bottom: 5px; }
.nav-links a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background-color: var(--accent-gold); transition: width 0.3s ease; }
.nav-links a:hover::after { width: 100%; }
.nav-contact { font-size: 16px; font-weight: bold; color: var(--primary-blue); display: flex; align-items: center; white-space: nowrap; }

/* 导航栏响应式 (小屏幕) */
@media (max-width: 992px) {
    .main-nav .container { flex-direction: column; gap: 15px; }
    .logo a { margin-right: 0; }
    .nav-links { margin-right: 0; gap: 25px; flex-wrap: wrap; justify-content: center; }
    .nav-contact { margin-top: 10px; }
}
@media (max-width: 768px) {
    .nav-links { gap: 20px; font-size: 14px; }
    .nav-contact { font-size: 14px; }
    .logo img { height: 40px; }
}

/* --- 页脚 --- */
.main-footer { 
    background-color: #13225a; 
    color: #bbb;
    padding: 70px 0 25px 0; 
}
.footer-grid-optimized {
    display: grid;
    grid-template-columns: 37.5% 25% 37.5%; 
    gap: 50px;
    margin-bottom: 50px;
    align-items: start;
}
@media (max-width: 992px) {
    .footer-grid-optimized {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
    .footer-logo-area {
        grid-column: span 2;
        text-align: center;
        display: flex;
        align-items: flex-start;
        justify-content: center;
        gap: 50px;
    }
    .footer-logo-area .logo {
        justify-content: center;
        margin: 0;
    }
}
@media (max-width: 768px) {
    .footer-grid-optimized {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .footer-logo-area {
        grid-column: auto;
        text-align: left;
        display: block;
    }
    .footer-logo-area .logo {
        justify-content: flex-start;
    }
}

.footer-logo-area,
.footer-links,
.footer-contact-area {
    align-self: start;
    padding-top: 0;
}

.footer-logo-area .logo a { 
    color: var(--light-text); 
    font-size: 26px; 
    display: inline-flex; 
    align-items: center;
}
.footer-logo-area .logo img {
    height: 40px; 
    width: auto;
}
.footer-links h4,
.footer-contact-area h4,
.footer-logo-area .footer-qr-title {
    color: #fff; 
    margin-bottom: 25px; 
    font-size: 19px; 
    font-family: var(--title-font);
    margin-top: 0 !important; 
}

.footer-links ul { 
    list-style: none; 
    padding-left: 0 !important;
}
.footer-links ul li { 
    margin-bottom: 12px; 
    font-size: 15px; 
    line-height: 1.6;
}
.footer-links a { color: #bbb; }
.footer-links a:hover { color: #fff; }
.footer-contact-area .footer-contact-list {
    list-style: none;
    padding-left: 0;
}
.footer-contact-area .footer-contact-list li {
    font-size: 15px;
    color: #bbb;
    margin-bottom: 12px; 
    display: flex;
    align-items: center; 
    line-height: 1.6;
}
.footer-contact-area .footer-contact-list .footer-icon {
    margin-right: 10px;
}
.footer-contact-area .footer-qr-code,
.footer-logo-area .footer-qr-code { 
    margin-top: 0; 
}
.footer-contact-area .footer-qr-code img,
.footer-logo-area .footer-qr-code img { 
    max-width: 120px; 
    height: auto;
    border-radius: 5px; 
    background: #fff; 
    padding: 5px;
}

.footer-corporate-nav {
    margin-bottom: 20px;
}
.footer-corporate-menu-list {
    list-style: none;
    padding-left: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px 30px;
}
.footer-corporate-menu-list li {
    padding: 0;
}
.footer-corporate-menu-list li a {
    font-size: 14px;
    color: #888;
    text-decoration: none;
    transition: color 0.3s ease;
}
.footer-corporate-menu-list li a:hover {
    color: #fff;
    text-decoration: underline;
}

.footer-bottom { 
    text-align: center; 
    padding-top: 25px;
    border-top: 1px solid #444; 
    font-size: 14px; 
    color: #888; 
}
.footer-bottom .copyright-text {
    margin: 0;
    padding: 0;
}