/* ========== 着陆页样式 ========== */

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========== 导航栏 ========== */
.landing-header {
    background: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
}

.logo h1 {
    font-size: 24px;
    font-weight: 600;
    color: #303133;
    margin: 0;
}

.main-nav {
    display: flex;
    gap: 32px;
}

.main-nav a {
    color: #606266;
    text-decoration: none;
    font-size: 15px;
    transition: color 0.3s;
}

.main-nav a:hover {
    color: #409eff;
}

.header-actions {
    display: flex;
    gap: 16px;
}

.btn-login,
.btn-register {
    padding: 8px 20px;
    border-radius: 4px;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s;
}

.btn-login {
    color: #409eff;
    border: 1px solid #409eff;
}

.btn-login:hover {
    background: #409eff;
    color: #fff;
}

.btn-register {
    background: #409eff;
    color: #fff;
}

.btn-register:hover {
    background: #66b1ff;
}

/* ========== Hero 区域 ========== */
.hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 80px 0;
    text-align: center;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 24px;
    line-height: 1.2;
}

.hero-title .highlight {
    color: #ffd700;
}

.hero-subtitle {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 48px;
    opacity: 0.95;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-bottom: 48px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 42px;
    font-weight: 700;
    color: #ffd700;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    opacity: 0.9;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.btn-primary,
.btn-outline {
    padding: 14px 36px;
    border-radius: 6px;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s;
    display: inline-block;
}

.btn-primary {
    background: #ffd700;
    color: #333;
}

.btn-primary:hover {
    background: #ffed4e;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 215, 0, 0.4);
}

.btn-outline {
    background: transparent;
    color: #fff;
    border: 2px solid #fff;
}

.btn-outline:hover {
    background: #fff;
    color: #667eea;
}

.btn-large {
    padding: 16px 40px;
    font-size: 17px;
}

/* ========== 通用区块样式 ========== */
section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: #303133;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 16px;
    color: #909399;
}

/* ========== 核心功能 ========== */
.features-section {
    background: #f5f7fa;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: #fff;
    padding: 40px 30px;
    border-radius: 8px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    font-size: 28px;
    color: #fff;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: #303133;
    margin-bottom: 12px;
}

.feature-card p {
    color: #606266;
    line-height: 1.6;
    margin-bottom: 16px;
}

.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    color: #67c23a;
    font-size: 14px;
    margin-bottom: 8px;
}

/* ========== 应用场景 ========== */
.scenarios-section {
    background: #fff;
}

.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.scenario-card {
    background: #f5f7fa;
    padding: 36px;
    border-radius: 8px;
    border-left: 4px solid #409eff;
}

.scenario-card h3 {
    font-size: 22px;
    font-weight: 600;
    color: #303133;
    margin-bottom: 12px;
}

.scenario-card p {
    color: #606266;
    line-height: 1.6;
    margin-bottom: 20px;
}

.scenario-tags {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.scenario-tags span {
    background: #e6f7ff;
    color: #409eff;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
}

/* ========== 价格方案 ========== */
.pricing-section {
    background: #f5f7fa;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.pricing-card {
    background: #fff;
    border-radius: 8px;
    padding: 40px 30px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    position: relative;
    transition: all 0.3s;
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.pricing-card.featured {
    border: 2px solid #409eff;
    transform: scale(1.05);
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-4px);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    right: 20px;
    background: #ff4757;
    color: #fff;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
}

.pricing-header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid #e4e7ed;
}

.pricing-header h3 {
    font-size: 24px;
    font-weight: 600;
    color: #303133;
    margin-bottom: 16px;
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
}

.price-amount {
    font-size: 42px;
    font-weight: 700;
    color: #409eff;
}

.price-period {
    font-size: 16px;
    color: #909399;
}

.pricing-features {
    list-style: none;
    padding: 0;
    margin-bottom: 30px;
}

.pricing-features li {
    color: #606266;
    font-size: 14px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.pricing-features i {
    color: #67c23a;
    font-size: 16px;
}

.btn-pricing {
    display: block;
    text-align: center;
    padding: 12px;
    background: #409eff;
    color: #fff;
    text-decoration: none;
    border-radius: 6px;
    font-size: 15px;
    transition: all 0.3s;
}

.btn-pricing:hover {
    background: #66b1ff;
}

.pricing-note {
    text-align: center;
    color: #909399;
    font-size: 14px;
}

/* ========== 客户案例 ========== */
.cases-section {
    background: #fff;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.case-card {
    background: #f5f7fa;
    padding: 36px;
    border-radius: 8px;
    border-top: 4px solid #409eff;
}

.case-content {
    margin-bottom: 24px;
}

.case-content p {
    color: #606266;
    line-height: 1.8;
    font-size: 15px;
    font-style: italic;
}

.case-author {
    display: flex;
    align-items: center;
    gap: 16px;
}

.author-info h4 {
    font-size: 16px;
    font-weight: 600;
    color: #303133;
    margin-bottom: 4px;
}

.author-info p {
    font-size: 13px;
    color: #909399;
}

/* ========== CTA 区域 ========== */
.cta-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    text-align: center;
    padding: 80px 0;
}

.cta-content h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 18px;
    margin-bottom: 36px;
    opacity: 0.95;
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: 20px;
}

/* ========== 页脚 ========== */
.landing-footer {
    background: #2c3e50;
    color: #fff;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-section p {
    color: #bdc3c7;
    line-height: 1.6;
    font-size: 14px;
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section ul li {
    margin-bottom: 12px;
}

.footer-section ul li a {
    color: #bdc3c7;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: #fff;
}

.footer-section ul li {
    color: #bdc3c7;
    font-size: 14px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #34495e;
}

.footer-bottom p {
    color: #95a5a6;
    font-size: 13px;
}

.footer-bottom a {
    color: #95a5a6;
    text-decoration: none;
}

.footer-bottom a:hover {
    color: #fff;
}

/* ========== 响应式设计 ========== */
@media (max-width: 1024px) {
    .features-grid,
    .pricing-grid,
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 30px;
    }
    
    .features-grid,
    .scenarios-grid,
    .pricing-grid,
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .main-nav {
        display: none;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 28px;
    }
}