.service-nav {
    padding: 24px 0;
    background: var(--bg-light);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 80px;
    z-index: 100;
}

.service-nav-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.service-nav-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 30px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    transition: var(--transition);
    white-space: nowrap;
}

.service-nav-item i {
    color: var(--accent);
    font-size: 14px;
}

.service-nav-item:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    transform: translateY(-2px);
}

.service-nav-item:hover i {
    color: #fff;
}

/* ========================================
   产品服务页面
   ======================================== */
.service-detail {
    padding: 80px 0;
    background: var(--bg);
}

.service-detail-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.service-detail-item.reverse {
    direction: rtl;
}

.service-detail-item.reverse > * {
    direction: ltr;
}

.service-detail-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    height: 350px;
    object-fit: cover;
}

.service-tag {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 12px;
}

.service-detail-text h4 {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 16px;
}

.service-detail-text > p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 20px;
}

.service-features {
    margin-bottom: 24px;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    color: var(--text);
    font-size: 15px;
}

.service-features i {
    color: #48bb78;
    font-size: 14px;
}

/* 喷涂参数 */
.parameters {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
}

.param-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.param-item {
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: var(--radius-lg);
    padding: 36px 24px;
    text-align: center;
    color: #fff;
    transition: var(--transition);
}

.param-item:hover {
    background: rgba(255,255,255,0.15);
    transform: translateY(-5px);
}

.param-icon {
    width: 56px;
    height: 56px;
    background: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 22px;
}

.param-item h4 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 8px;
}

.param-item p {
    font-size: 14px;
    opacity: 0.85;
}

/* ========================================
   设备展示页面
   ======================================== */