/* 企业主色调 */
:root {
    --primary-color: #1d8a72;
    --panel-accent-color: #2d9d82;
    --secondary-color: #f5f2eb;
    --accent-color: #a8c2b8;
    --texture-overlay: linear-gradient(rgba(245,242,235,0.2), rgba(245,242,235,0.2));
}

body {
    font-family: 'Noto Serif SC', 'Microsoft YaHei', serif;
    line-height: 1.8;
    background: var(--texture-overlay) fixed;
    color: #444;
}

.main-header {
    background: linear-gradient(45deg, var(--primary-color), #2d5d4b);
    padding: 6rem 2rem;
    color: var(--secondary-color);
    text-shadow: 0 0 5px rgba(0,0,0,0.2), 0 0 10px rgba(0,0,0,0.1), 0 0 15px rgba(0,0,0,0.05);
    text-align: center;
}

#mainNav {
    position: sticky;
    top: 0;
    background: linear-gradient(to right, var(--primary-color), #2d5d4b);
    backdrop-filter: blur(5px);
    display: flex;
    justify-content: center;
    gap: 2rem;
    padding: 1.2rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.15);
    z-index: 1000;
}

#mainNav a {
    color: var(--secondary-color)!important;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    transition: all 0.3s ease;
}

#mainNav a:hover {
    background: rgba(255,255,255,0.15);
    transform: translateY(-2px);
}

.content-section {
    max-width: 1200px;
    margin: 3rem auto;
    padding: 2.5rem;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(8px);
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(45,93,75,0.1);
    border: 1px solid rgba(255,255,255,0.3);
}

/* 折叠面板样式 */
.business-panel {
    border: 1px solid var(--accent-color);
    margin: 1rem 0;
    border-radius: 4px;
}

.panel-header {
    padding: 1.2rem 1.5rem;
    background: var(--primary-color);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    font-size: 1.2rem;
    font-weight: 600;
    color: white;
    text-shadow: 0 1px 2px rgba(0,0,0,0.2);
    transition: all 0.3s ease;
    background: linear-gradient(to right, var(--panel-accent-color), #1d8a72);
}

.panel-header:hover {
    background: linear-gradient(to right, #1d8a72, var(--panel-accent-color));
    box-shadow: inset 0 2px 8px rgba(255,255,255,0.1);
}

.panel-header .arrow {
    transition: transform 0.3s ease;
}

.business-panel.active .arrow {
    transform: rotate(180deg);
}

.panel-content {
    padding: 1rem;
    display: none;
    background: #f8f9fa;
}
    
.menu-toggle {
    display: none;
}

@media (max-width: 768px) {
    #mainNav {
        flex-direction: column;
        gap: 0;
        padding: 0;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }
    
    #mainNav.active {
        max-height: 500px;
    }
    
    #mainNav a {
        width: 100%;
        padding: 0.8rem;
        border-radius: 0;
        text-align: center;
        font-size: 0.9rem;
    }
    
    .menu-toggle {
        display: block;
        position: fixed;
        top: 0.8rem;
        right: 0.8rem;
        background: var(--primary-color);
        color: white;
        border: none;
        padding: 0.4rem 0.8rem;
        font-size: 1.2rem;
        z-index: 1001;
        cursor: pointer;
    }
    
    .content-section { 
        margin: 1.5rem 0.8rem;
        padding: 1.5rem;
    }
    
    .business-panel {
        margin: 0.8rem 0;
    }
    
    .panel-header {
        padding: 0.8rem 1rem;
        font-size: 1rem;
    }
    
    .panel-content {
        padding: 0.8rem;
    }
}

/* 联系方式 */
.contact-info {
    text-align: center;
    font-size: 2em;
}

.contact-info::before {
    content: "📞";
    margin-right: 0.5em;
}

.footer-icp {
    text-align: center;
    font-size: 0.9em;
    color: var(--primary-color);
    margin-top: 1em;
}