/* 导航链接样式 */
.nav-link {
    position: relative;
    font-weight: 500;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #2563eb;
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.nav-link:hover::after {
    transform: scaleX(1);
}

.nav-link.active {
    color: #2563eb;
    background-color: #eff6ff;
}

.nav-link.active::after {
    transform: scaleX(1);
}

/* 导航栏统一样式 */
.navbar {
    width: 100%; background: #fff; box-shadow: 0 2px 8px rgba(0,0,0,0.03); display: flex; align-items: center; justify-content: space-between; padding: 0 48px; height: 64px; position: sticky; top: 0; z-index: 10;
}
.navbar-title {
    font-size: 26px; font-weight: 700; color: #1677ff; letter-spacing: 1px; font-family: 'SF Pro Display', 'PingFang SC', Arial, sans-serif;
}
.navbar-menu {
    display: flex; gap: 36px;
}
.navbar-link {
    color: #1677ff; font-size: 17px; text-decoration: none; padding: 4px 0; font-weight: 500; position: relative; transition: color 0.2s, background 0.2s;
}
.navbar-link:hover {
    color: #145bcc;
}
.navbar-link.active {
    font-weight: 700;
    color: #2563eb !important;
    border-bottom: 3px solid #2563eb;
    background: #f0f6ff;
    border-radius: 4px 4px 0 0;
}
.navbar-link.active::after {
    content: ""; display: block; height: 3px; border-radius: 2px; background: #1677ff; position: absolute; left: 0; right: 0; bottom: -6px;
}
@media (max-width: 700px) {
    .navbar { flex-direction: column; height: auto; padding: 0 12px; }
    .navbar-menu { gap: 18px; }
}