/* ============================================
   腾隍纽扣 - 滚动优势模块 (Counter Section)
   ============================================ */

.counter-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #2c3e50, #1a252f);
    position: relative;
    overflow: hidden;
    color: #ffffff;
}

/* 微弱网格背景提升质感 */
.counter-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
}

.counter-container {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 10px;
}

.counter-item {
    flex: 1;
    min-width: 180px;
    text-align: center;
    padding: 0 20px;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.counter-item:hover {
    transform: translateY(-10px);
}

/* 数字样式 */
.counter-number {
    font-family: 'AlibabaPuHuiTi', sans-serif;
    font-size: clamp(32px, 4vw, 56px);
    font-weight: 700;
    margin-bottom: 10px;
    display: block;
    line-height: 1;
    text-shadow: 0 4px 15px rgba(255, 255, 255, 0.2);
    color: #ffffff;
}

.counter-number .suffix {
    font-size: 0.5em;
    margin-left: 2px;
}

/* 标题样式 */
.counter-title {
    font-size: 18px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 8px;
    display: block;
}

/* 说明文字样式 */
.counter-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.6;
    display: block;
    max-width: 200px;
    margin: 0 auto;
}

/* 响应式调整 */
@media (max-width: 991.98px) {
    .counter-section {
        padding: 80px 0;
    }
    
    .counter-container {
        display: grid;
        grid-template-columns: repeat(2, 1fr); /* 手机端主要每行 2 个 */
        grid-auto-flow: dense; /* 自动填充空隙 */
        gap: 30px;
    }

    .counter-item {
        flex: none;
        min-width: 0;
        margin-bottom: 0;
    }
    
    /* 按照要求：共 3 行。第 2 个项（标准化生产基地）独占一行，其余每行 2 个 */
    .counter-item:nth-child(2) {
        grid-column: span 2; /* 独占一行 */
        order: 2; /* 确保它在中间那行 */
    }

    .counter-item:nth-child(1) { order: 1; }
    .counter-item:nth-child(3) { order: 1; } /* 让第 3 个项补到第 1 行的空位 */
    .counter-item:nth-child(4) { order: 3; }
    .counter-item:nth-child(5) { 
        display: block; /* 重新显示第 5 个项 */
        order: 3; 
    }

    .counter-number {
        font-size: 36px;
    }
}

@media (max-width: 575.98px) {
    .counter-item {
        flex: 0 0 calc(50% - 15px);
        gap: 15px;
    }
    
    .counter-title {
        font-size: 16px;
    }
    
    .counter-desc {
        font-size: 12px;
    }
}