/* ========================================
   子页面通用样式
   ======================================== */

/* 页面横幅 */
.page-banner {
    position: relative;
    height: 300px;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
}

.page-banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(26,54,93,0.85) 0%, rgba(26,54,93,0.7) 100%);
}

.page-banner-content {
    position: relative;
    z-index: 2;
    color: #fff;
    text-align: center;
}

.page-banner-content h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 12px;
}

.breadcrumb {
    font-size: 14px;
    opacity: 0.85;
}

.breadcrumb a {
    color: #fff;
}

.breadcrumb a:hover {
    color: var(--accent);
}

.breadcrumb span {
    margin: 0 8px;
}

/* ========================================
   关于我们页面
   ======================================== */

/* 公司简介 */
.company-intro {
    padding: 80px 0;
    background: var(--bg);
}

.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.intro-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.intro-text p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 16px;
}

/* 发展历程 */
.history {
    padding: 80px 0;
    background: var(--bg-light);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: var(--border);
}

.timeline-item {
    display: flex;
    justify-content: flex-end;
    padding-right: 50%;
    position: relative;
    margin-bottom: 40px;
}

.timeline-item:nth-child(even) {
    justify-content: flex-start;
    padding-right: 0;
    padding-left: 50%;
}

.timeline-year {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 60px;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    z-index: 2;
}

.timeline-content {
    background: var(--bg);
    padding: 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    max-width: 300px;
    margin: 0 30px;
}

.timeline-content h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 8px;
}

.timeline-content p {
    font-size: 14px;
    color: var(--text-light);
}

/* 企业资质 */
.qualifications {
    padding: 80px 0;
    background: var(--bg);
}

.qual-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.qual-item {
    text-align: center;
    padding: 36px 24px;
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.qual-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.qual-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    color: #fff;
    font-size: 24px;
}

.qual-item h4 {
    font-size: 17px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 6px;
}

.qual-item p {
    font-size: 13px;
    color: var(--text-light);
}

/* ========================================
   服务分类导航
   ======================================== */
.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
   ======================================== */
.equipment-show {
    padding: 80px 0;
    background: var(--bg);
}

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

.equip-item {
    background: var(--bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.equip-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.equip-image {
    height: 280px;
    overflow: hidden;
}

.equip-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.equip-item:hover .equip-image img {
    transform: scale(1.05);
}

.equip-info {
    padding: 24px;
}

.equip-info h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 10px;
}

.equip-info p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
}

/* ========================================
   适用材料
   ======================================== */
.materials {
    padding: 80px 0;
    background: var(--bg-light);
}

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

.material-item {
    background: var(--bg);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.material-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.material-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    color: #fff;
    font-size: 22px;
}

.material-item h4 {
    font-size: 17px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 8px;
}

.material-item p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
}

/* ========================================
   企业微信二维码模块
   ======================================== */
.wechat-section {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
}

.wechat-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    max-width: 900px;
    margin: 0 auto;
}

.wechat-text {
    color: #fff;
}

.wechat-icon {
    width: 64px;
    height: 64px;
    background: #07c160;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin-bottom: 20px;
}

.wechat-text h3 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
}

.wechat-text > p {
    font-size: 16px;
    opacity: 0.85;
    margin-bottom: 24px;
}

.wechat-benefits {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 28px;
}

.wechat-benefits li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
}

.wechat-benefits i {
    color: #07c160;
    font-size: 16px;
}

.wechat-phone {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    padding: 14px 20px;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius);
    border: 1px solid rgba(255,255,255,0.2);
}

.wechat-phone i {
    color: var(--accent);
}

.wechat-qrcode {
    display: flex;
    justify-content: center;
}

.qrcode-box {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 24px;
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.qrcode-box img {
    width: 220px;
    height: 220px;
    border-radius: var(--radius);
    margin-bottom: 12px;
}

.qrcode-tip {
    font-size: 14px;
    color: var(--text-light);
    font-weight: 500;
}

/* ========================================
   联系我们页面
   ======================================== */
.contact-info-section {
    padding: 60px 0;
    background: var(--bg-light);
}

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

.contact-info-item {
    background: var(--bg);
    border-radius: var(--radius-lg);
    padding: 40px 24px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.contact-info-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.contact-info-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    color: #fff;
    font-size: 24px;
}

.contact-info-item h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 12px;
}

.contact-info-item p {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 4px;
}

/* 联系表单 */
.contact-form-section {
    padding: 80px 0;
    background: var(--bg);
}

.contact-form-wrapper {
    max-width: 800px;
    margin: 0 auto;
    background: var(--bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 48px;
    border: 1px solid var(--border);
}

.form-section-header {
    text-align: center;
    margin-bottom: 36px;
}

.form-section-header h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

.form-section-header p {
    color: var(--text-light);
}

.contact-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 0;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 8px;
}

.form-group label span {
    color: #e53e3e;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    font-family: inherit;
    transition: var(--transition);
    background: var(--bg);
    color: var(--text);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(44, 82, 130, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.btn-submit {
    width: 100%;
    padding: 14px;
    font-size: 16px;
    margin-top: 10px;
}

/* ========================================
   文章页面样式
   ======================================== */

/* 文章布局 */
.article-content {
    padding: 40px 0 80px;
    background: var(--bg);
}

.article-content .container {
    max-width: 900px;
}

/* 面包屑导航 */
.breadcrumb-nav {
    margin-bottom: 30px;
    font-size: 14px;
    color: var(--text-light);
}

.breadcrumb-nav ol {
    display: flex;
    list-style: none;
    gap: 8px;
    flex-wrap: wrap;
}

.breadcrumb-nav li:not(:last-child)::after {
    content: '>';
    margin-left: 8px;
    color: var(--text-lighter);
}

.breadcrumb-nav a {
    color: var(--primary-light);
    text-decoration: none;
}

.breadcrumb-nav a:hover {
    color: var(--accent);
}

/* 文章头部 */
.article-header {
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 2px solid var(--border);
}

.article-header h1 {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.4;
    margin-bottom: 20px;
}

.article-meta {
    display: flex;
    gap: 24px;
    color: var(--text-light);
    font-size: 14px;
}

.article-meta i {
    color: var(--accent);
    margin-right: 6px;
}

/* 文章摘要 */
.article-summary {
    font-size: 17px;
    line-height: 1.8;
    color: var(--text);
    background: linear-gradient(135deg, var(--bg-light) 0%, #fff 100%);
    padding: 24px 28px;
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--accent);
    margin-bottom: 40px;
}

/* 文章正文 */
.article-body {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text);
}

.article-body h2 {
    font-size: 26px;
    font-weight: 700;
    color: var(--primary);
    margin: 48px 0 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border);
}

.article-body h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-light);
    margin: 32px 0 16px;
}

.article-body h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
    margin: 24px 0 12px;
}

.article-body p {
    margin-bottom: 16px;
}

.article-body ul,
.article-body ol {
    margin-bottom: 20px;
    padding-left: 24px;
}

.article-body li {
    margin-bottom: 10px;
}

.article-body strong {
    color: var(--primary);
    font-weight: 600;
}

/* 数据表格 */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 15px;
    background: var(--bg);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.data-table th {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    padding: 14px 16px;
    text-align: left;
    font-weight: 600;
}

.data-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

.data-table tr:nth-child(even) {
    background: var(--bg-light);
}

.data-table tr:hover {
    background: rgba(237, 137, 54, 0.05);
}

/* 提示框 */
.tip-box {
    background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
    border: 1px solid #f59e0b;
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    margin: 24px 0;
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.tip-box i {
    color: #f59e0b;
    font-size: 20px;
    margin-top: 2px;
    flex-shrink: 0;
}

.warning-box {
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
    border: 1px solid #ef4444;
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    margin: 24px 0;
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.warning-box i {
    color: #ef4444;
    font-size: 20px;
    margin-top: 2px;
    flex-shrink: 0;
}

/* 对比框 */
.compare-summary {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin: 24px 0;
}

.compare-item {
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    padding: 28px;
    border: 2px solid var(--border);
}

.compare-item.win {
    border-color: #48bb78;
    background: linear-gradient(135deg, #f0fff4 0%, #fff 100%);
}

.compare-item h3 {
    font-size: 18px;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.compare-item.win h3 {
    color: #48bb78;
}

.compare-item h3 i {
    font-size: 20px;
}

.compare-item ul {
    list-style: none;
    padding: 0;
}

.compare-item li {
    padding-left: 20px;
    position: relative;
    margin-bottom: 8px;
}

.compare-item li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: bold;
}

/* 标签 */
.tag {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    margin-left: 8px;
    vertical-align: middle;
}

.tag.win {
    background: #48bb78;
    color: #fff;
}

.tag.tie {
    background: var(--accent);
    color: #fff;
}

/* 场景框 */
.scenario-box {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: #fff;
    border-radius: var(--radius-lg);
    padding: 28px;
    margin: 24px 0;
}

.scenario-box.secondary {
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg) 100%);
    color: var(--text);
    border: 2px solid var(--border);
}

.scenario-box h3 {
    font-size: 18px;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.scenario-box ul {
    list-style: none;
    padding: 0;
}

.scenario-box li {
    padding-left: 24px;
    position: relative;
    margin-bottom: 8px;
}

.scenario-box li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: bold;
}

.scenario-box.secondary li::before {
    color: var(--primary);
}

/* 问答框 */
.qa-box {
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin: 16px 0;
    border-left: 4px solid var(--primary-light);
}

.qa-box h4 {
    font-size: 16px;
    color: var(--primary);
    margin-bottom: 8px;
}

.qa-box p {
    margin-bottom: 6px;
    font-size: 15px;
}

/* 检查清单 */
.checklist {
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin: 24px 0;
}

.checklist label {
    display: block;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    font-size: 15px;
}

.checklist label:last-child {
    border-bottom: none;
}

.checklist input[type="checkbox"] {
    margin-right: 10px;
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
}

/* 实例框 */
.example-box {
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    padding: 28px;
    margin: 24px 0;
    border: 1px solid var(--border);
}

.example-box p {
    margin-bottom: 12px;
}

.example-box .data-table {
    margin: 16px 0 0;
}

/* 文章 CTA */
.article-cta {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: #fff;
    border-radius: var(--radius-lg);
    padding: 40px;
    text-align: center;
    margin-top: 48px;
}

.article-cta h3 {
    color: #fff;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
}

.article-cta p {
    font-size: 16px;
    opacity: 0.9;
    margin-bottom: 24px;
}

.article-cta .btn-primary,
.article-cta .btn-outline {
    display: inline-block;
    margin: 0 8px 8px;
}

.article-cta .btn-outline {
    color: #fff;
    border-color: #fff;
}

.article-cta .btn-outline:hover {
    background: #fff;
    color: var(--primary);
}

/* 文章目录（侧边栏） */
.article-toc {
    display: none;
}

/* 总结表格 */
.summary-table .win {
    color: #48bb78;
    font-weight: 600;
}

/* 重要性标签 */
.importance {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    margin-left: 8px;
    background: #ef4444;
    color: #fff;
}

/* 最终结论 */
.final-word {
    background: linear-gradient(135deg, var(--bg-light) 0%, #fff 100%);
    border-radius: var(--radius-lg);
    padding: 24px 28px;
    border-left: 4px solid var(--primary);
    margin: 32px 0;
    font-size: 17px;
}

/* ========================================
   文章列表页
   ======================================== */
.articles-section {
    padding: 80px 0;
    background: var(--bg);
}

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

.article-card {
    background: var(--bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
}

.article-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.article-card-image {
    height: 180px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 48px;
}

.article-card-content {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.article-card-content h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 12px;
    line-height: 1.4;
}

.article-card-content p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
    flex: 1;
    margin-bottom: 16px;
}

.article-card-meta {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: var(--text-lighter);
}

.article-card-meta i {
    margin-right: 4px;
}

/* ========================================
   缺陷示意图
   ======================================== */
.defect-image {
    text-align: center;
    margin: 20px 0 30px;
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    padding: 20px;
    border: 1px solid var(--border);
}

.defect-image img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.defect-caption {
    font-size: 14px;
    color: var(--text-light);
    margin-top: 12px;
    font-style: italic;
}

/* ========================================
   响应式
   ======================================== */
@media (max-width: 768px) {
    .page-banner {
        height: 220px;
    }
    
    .page-banner-content h2 {
        font-size: 28px;
    }
    
    .intro-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .intro-image {
        order: -1;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item,
    .timeline-item:nth-child(even) {
        padding-left: 60px;
        padding-right: 0;
        justify-content: flex-start;
    }
    
    .timeline-year {
        left: 20px;
        transform: translateX(-50%);
    }
    
    .timeline-content {
        margin: 0;
        max-width: 100%;
    }
    
    .qual-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .service-detail-item,
    .service-detail-item.reverse {
        grid-template-columns: 1fr;
        direction: ltr;
        gap: 30px;
    }
    
    .service-detail-item.reverse > * {
        direction: ltr;
    }
    
    .param-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .equip-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-info-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-form-wrapper {
        padding: 24px;
    }
    
    .contact-form .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .materials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .service-nav {
        position: relative;
        top: 0;
    }
    
    .service-nav-list {
        justify-content: flex-start;
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 8px;
        -webkit-overflow-scrolling: touch;
    }
    
    .service-nav-item {
        flex-shrink: 0;
    }
    
    .wechat-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .wechat-icon {
        margin: 0 auto 20px;
    }
    
    .wechat-benefits {
        align-items: center;
    }
    
    .wechat-phone {
        justify-content: center;
    }
    
    /* 文章响应式 */
    .article-header h1 {
        font-size: 24px;
    }
    
    .article-body h2 {
        font-size: 22px;
    }
    
    .article-body h3 {
        font-size: 18px;
    }
    
    .compare-summary {
        grid-template-columns: 1fr;
    }
    
    .data-table {
        font-size: 13px;
    }
    
    .data-table th,
    .data-table td {
        padding: 10px 12px;
    }
    
    .article-cta {
        padding: 28px 20px;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .qual-grid,
    .param-grid,
    .materials-grid {
        grid-template-columns: 1fr;
    }
    
    .qrcode-box img {
        width: 180px;
        height: 180px;
    }
    
    .article-meta {
        flex-direction: column;
        gap: 8px;
    }
}