/* 商务绿色主题 CSS */
:root {
    --primary-color: #2e7d32;
    --secondary-color: #1b5e20;
    --accent-color: #4caf50;
    --info-color: #00acc1;
    --success-color: #66bb6a;
    --warning-color: #ff9800;
    --danger-color: #f44336;
    --light-color: #f1f8e9;
    --dark-color: #263238;
    --text-color: #2e2e2e;
    --bg-gradient-start: #2e7d32;
    --bg-gradient-end: #4caf50;
}

body {
    font-family: 'Merriweather', 'Georgia', serif;
    color: var(--text-color);
    background-color: #ffffff;
    line-height: 1.7;
}

.hero-section {
    background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-end));
    position: relative;
    padding: 120px 0;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="business-pattern" x="0" y="0" width="40" height="40" patternUnits="userSpaceOnUse"><rect x="0" y="0" width="2" height="40" fill="rgba(255,255,255,0.05)"/><rect x="0" y="0" width="40" height="2" fill="rgba(255,255,255,0.05)"/></pattern></defs><rect width="100" height="100" fill="url(%23business-pattern)"/></svg>');
}

.navbar {
    background-color: rgba(255, 255, 255, 0.98) !important;
    box-shadow: 0 2px 15px rgba(46, 125, 50, 0.1);
    border-bottom: 3px solid var(--primary-color);
}

.btn-custom {
    background-color: var(--primary-color);
    border: 2px solid var(--primary-color);
    color: white;
    padding: 14px 35px;
    border-radius: 5px;
    font-weight: 600;
    text-transform: capitalize;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    position: relative;
}

.btn-custom:hover {
    background-color: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(46, 125, 50, 0.2);
}

.card {
    border: none;
    border-radius: 8px;
    box-shadow: 0 8px 25px rgba(46, 125, 50, 0.08);
    transition: all 0.3s ease;
    background: white;
    border-left: 4px solid var(--accent-color);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(46, 125, 50, 0.15);
    border-left-color: var(--primary-color);
}

.card-body {
    padding: 2.5rem;
}

.card-title {
    color: var(--secondary-color);
    font-weight: 700;
    margin-bottom: 1.2rem;
    font-family: 'Roboto', sans-serif;
}

.card-text {
    color: #555;
    line-height: 1.7;
}

.section {
    padding: 100px 0;
}

.section h2 {
    color: var(--secondary-color);
    font-weight: 700;
    margin-bottom: 2rem;
    position: relative;
    font-family: 'Roboto', sans-serif;
}

.section h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

.section h2::before {
    content: '';
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    background: var(--accent-color);
    border-radius: 2px;
}

.bg-light {
    background: linear-gradient(135deg, #f8f9fa, #e8f5e8) !important;
}

.footer {
    background: linear-gradient(135deg, var(--dark-color), #37474f);
    border-top: 4px solid var(--primary-color);
}

.social-links a {
    color: #bbb;
    transition: all 0.3s ease;
    padding: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    margin-right: 10px;
}

.social-links a:hover {
    color: var(--accent-color);
    background: rgba(76, 175, 80, 0.2);
    transform: translateY(-3px);
}

.nav-link {
    font-weight: 500;
    color: var(--text-color) !important;
    transition: color 0.3s ease;
    font-family: 'Roboto', sans-serif;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link:hover {
    color: var(--primary-color) !important;
}

/* 专业图标样式 */
.fas, .fab {
    transition: all 0.3s ease;
}

.card:hover .fas {
    color: var(--accent-color);
    transform: scale(1.1);
}

/* 表格样式 */
.table {
    border: 1px solid #e0e0e0;
}

.table th {
    background-color: var(--light-color);
    color: var(--secondary-color);
    font-weight: 600;
    border-bottom: 2px solid var(--primary-color);
}

/* 按钮变体 */
.btn-outline-custom {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    background: transparent;
    padding: 12px 30px;
    border-radius: 5px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-outline-custom:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-section {
        padding: 80px 0;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .display-4 {
        font-size: 2.2rem;
    }
    
    .card-body {
        padding: 2rem;
    }
}

/* 专业感强调样式 */
.professional-highlight {
    background: linear-gradient(135deg, var(--light-color), #ffffff);
    border-left: 5px solid var(--primary-color);
    padding: 20px;
    border-radius: 0 8px 8px 0;
}

.stats-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    font-family: 'Roboto', sans-serif;
}

.stats-label {
    color: var(--secondary-color);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
}

/* 渐入动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.8s ease forwards;
}

/* 商务感边框 */
.business-border {
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    position: relative;
}

.business-border::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
    border-radius: 8px;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.business-border:hover::before {
    opacity: 1;
}