/* ===== 全局基础 ===== */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    background-color: #f5f7fa;
}

/* ===== 布局框架 ===== */
.wafu-tech-article {
    width: 100%;
    padding: 30px 200px;
    display: flex;
    gap: 25px;
}

.wafu-main-content {
    flex: 1 1 70%;
    min-width: 0;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, .08);
    border: 1px solid #f0f0f0;
    padding: 40px;
}

.wafu-side-bar {
    flex: 0 0 30%;
    display: flex;
    flex-direction: column;
    gap: 25px;
}

/* ===== 文章头 ===== */
.wafu-article-title {
    font-size: 2rem;
    margin: 0 0 10px;
    line-height: 1.3;
    color: #333;
}

.wafu-article-meta {
    font-size: .9rem;
    color: #666;
    padding-bottom: 15px;
    border-bottom: 1px solid #f0f0f0;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.wafu-article-tags {
    display: flex;
    gap: 6px;
}

.wafu-tag {
    font-style: normal;
    background: #f0f6ff;
    color: #007bff;
    font-size: .8rem;
    padding: 2px 6px;
    border-radius: 4px;
}

/* ===== 正文 ===== */
.wafu-article-body {
    font-size: 1rem;
    line-height: 1.6;
    color: #555;
}

.wafu-heading-2 {
    margin: 30px 0 10px;
    padding-bottom: 10px;
    border-bottom: 1px solid #f0f0f0;
    color: #333;
}

.wafu-list {
    padding-left: 20px;
    margin: 0 0 15px;
}

.wafu-list-item {
    margin-bottom: 8px;
}

.wafu-image-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 24px auto;
    border-radius: 8px;
    padding: 15px;
    width: 100%;
    text-align: center;
    background: #fff;
}

.wafu-image-box picture {
    display: flex;
    justify-content: center;
    width: 100%;
}

.wafu-image {
    display: block;
    max-width: 72%;
    width: auto;
    height: auto;
    margin: 0 auto;
    border-radius: 8px;
    object-fit: contain;
}

.wafu-image-caption {
    font-size: .9rem;
    color: #666;
    margin-top: 12px;
    text-align: center;
    width: 100%;
}

.wafu-image-box .wafu-comparison-table {
    width: 100%;
    max-width: 100%;
    align-self: stretch;
    margin: 0;
}

.wafu-article-cta {
    margin: 40px 0 20px;
    padding: 28px 24px;
    background: linear-gradient(135deg, #f0f7ff 0%, #e8f4fd 100%);
    border: 1px solid rgba(26, 115, 232, 0.2);
    border-radius: 12px;
    text-align: center;
}

.wafu-article-cta .wafu-heading-3 {
    margin-top: 0;
    margin-bottom: 12px;
}

.wafu-cta-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-top: 20px;
}

.wafu-cta-actions .wafu-consult-btn {
    display: inline-block;
    text-decoration: none;
}

.wafu-cta-btn-secondary {
    background: #fff;
    color: #1a73e8;
    border: 1px solid #1a73e8;
}

.wafu-cta-btn-secondary:hover {
    background: #1a73e8;
    color: #fff;
}

/* ===== 文章底 ===== */
.wafu-comparison-table {
    overflow-x: auto;
    margin: 20px 0;
    max-width: 100%;
    -webkit-overflow-scrolling: touch;
}

.wafu-comparison-table table {
    width: 100%;
    max-width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    text-align: left;
    table-layout: fixed;
}

.wafu-comparison-table th {
    background-color: #f5f5f5;
    border-bottom: 2px solid #ddd;
    padding: 12px;
    border: 1px solid #ddd;
    font-weight: 600;
    color: #333;
    word-break: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

.wafu-comparison-table td {
    padding: 12px;
    border: 1px solid #ddd;
    color: #555;
    word-break: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

.wafu-comparison-table tr:hover {
    background-color: #fafafa;
}

.wafu-article-footer {
    border-top: 1px solid #dfdfdf;
    margin-top: 25px;
    padding-top: 25px;
}

.wafu-share-section {
    margin-top: 20px;
    margin-bottom: 0;
}

.wafu-share-title {
    font-size: 1.1rem;
    color: #555;
    margin-bottom: 10px;
}

.wafu-share-buttons {
    display: flex;
    gap: 15px;
}

.wafu-share-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: #f5f7fa;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: background .3s;
}


/* 圆形图标按钮基础样式 */
.share-round {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    transition: transform .3s ease;
}

.share-round:hover {
    transform: translateY(-2px);
}

.share-round.twitter {
    background: #000000;
}

.share-round.twitter .icon-twitter {
    width: 20px;
    height: 20px;
    background: url(../icons/X-select.svg) no-repeat center / contain;
}

.share-round.facebook {
    background: #1877f2;
}

.share-round.facebook .icon-facebook {
    width: 20px;
    height: 20px;
    background: url(../icons/facebook.svg) no-repeat center / contain;
}

.wafu-share-btn:hover {
    background: #e9ecef;
}

.wafu-related-tags {
    align-items: flex-start;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 24px;
}

.wafu-related-tags-title {
    flex: 0 0 auto;
    margin: 0;
    line-height: 1.6;
    font-weight: 700;
    color: #333;
}

.wafu-tag-list {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    align-content: flex-start;
    align-self: flex-start;
    gap: 10px;
    flex: 1 1 200px;
    min-width: 0;
}

.wafu-tag-item {
    display: inline-block;
    flex: 0 0 auto;
    align-self: flex-start;
    height: auto;
    background: #f0f0f0;
    color: #333;
    font-size: .9rem;
    padding: 6px 15px;
    border-radius: 15px;
    text-decoration: none;
    transition: all .3s;
    white-space: normal;
    word-break: break-word;
    max-width: 100%;
}

.wafu-tag-item:hover {
    background: #1a6dcc;
    color: #fff;
}

.wafu-article-nav {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 24px;
    margin-top: 20px;
    align-items: start;
}

.wafu-nav-prev,
.wafu-nav-next {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    text-decoration: none;
    font-weight: 400;
    min-width: 0;
    box-sizing: border-box;
}

a.wafu-nav-prev,
a.wafu-nav-next {
    color: inherit;
}

.wafu-nav-prev {
    grid-column: 1;
    justify-content: flex-start;
    text-align: left;
}

.wafu-nav-next {
    grid-column: 2;
    justify-content: flex-end;
    text-align: right;
}

span.wafu-nav-prev,
span.wafu-nav-next {
    color: #999;
    cursor: default;
}

span.wafu-nav-prev .wafu-nav-label,
span.wafu-nav-prev .wafu-nav-text,
span.wafu-nav-next .wafu-nav-label,
span.wafu-nav-next .wafu-nav-text {
    color: #999;
    text-decoration: none;
}

span.wafu-nav-prev .wafu-nav-arrow,
span.wafu-nav-next .wafu-nav-arrow {
    color: #666;
}

a.wafu-nav-prev .wafu-nav-text,
a.wafu-nav-next .wafu-nav-text {
    color: var(--wafu-link, #1a73e8);
    text-decoration: none;
    transition: color 0.2s ease;
}

a.wafu-nav-prev:hover .wafu-nav-text,
a.wafu-nav-next:hover .wafu-nav-text {
    color: var(--wafu-link-hover, #1557b0);
}

a.wafu-nav-prev:hover .wafu-nav-arrow,
a.wafu-nav-next:hover .wafu-nav-arrow {
    color: var(--wafu-link-hover, #1557b0);
}

a.wafu-nav-prev .wafu-nav-label,
a.wafu-nav-next .wafu-nav-label {
    color: #666;
    text-decoration: none;
}

.wafu-nav-content {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 0;
    flex: 1;
}

.wafu-nav-prev .wafu-nav-content {
    align-items: flex-start;
    text-align: left;
}

.wafu-nav-next .wafu-nav-content {
    align-items: flex-end;
    text-align: right;
}

.wafu-nav-prev .wafu-nav-heading,
.wafu-nav-next .wafu-nav-heading {
    display: flex;
    align-items: center;
    gap: 4px;
    width: 100%;
}

.wafu-nav-prev .wafu-nav-heading {
    justify-content: flex-start;
}

.wafu-nav-next .wafu-nav-heading {
    justify-content: flex-end;
}

.wafu-nav-text {
    line-height: 1.45;
    min-width: 0;
}

.wafu-nav-arrow {
    flex-shrink: 0;
    white-space: nowrap;
    font-size: 1.2rem;
    color: #666;
    line-height: 1.45;
    text-decoration: none;
    transition: color 0.2s ease;
}

.wafu-nav-label {
    font-size: 0.9rem;
    color: #666;
    white-space: nowrap;
}

/* ===== 侧边栏通用卡片 ===== */
.wafu-about-card,
.wafu-related-articles,
.wafu-hot-products,
.wafu-consult-card {
    background: #fff;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, .05);
    border: 1px solid #f0f0f0;
}

.wafu-side-title {
    font-size: 1.2rem;
    margin: 0 0 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
    color: #333;
}

/* ===== 品牌区 ===== */
.wafu-brand-logo {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 15px;
    display: block;
    border: 2px solid #f0f0f0;
}

.wafu-brand-name {
    text-align: center;
    margin: 0 0 10px;
    font-size: 1.4rem;
    color: #333;
}

.wafu-brand-desc {
    font-size: .9rem;
    line-height: 1.5;
    color: #555;
    margin-bottom: 20px;
    text-align: left;
}

.wafu-more-link {
    padding: 8px 20px;
    background: #1a6dcc;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    font-size: .9rem;
    transition: background .3s;
    margin: 0 auto;
    display: block;
    width: max-content;
}

.wafu-more-link:hover {
    background: #1559a8;
}

/* ===== 相关文章 ===== */
.wafu-related-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.wafu-related-item {
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid #f5f5f5;
}

.wafu-related-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.wafu-related-link {
    display: block;
    font-size: .9rem;
    color: #333;
    text-decoration: none;
    line-height: 1.4;
    margin-bottom: 5px;
    transition: color .3s;
}

.wafu-related-link:hover {
    color: #1a6dcc;
}

.wafu-related-date {
    font-size: .8rem;
    color: #999;
}

/* ===== 热门产品 ===== */
.wafu-product-nav {
    display: flex;
    flex-direction: column;
}

.wafu-product-link {
    padding: 8px 0;
    color: #555;
    font-size: .9rem;
    text-decoration: none;
    border-bottom: 1px solid #f5f5f5;
    transition: color .3s;
}

.wafu-product-link:last-child {
    border-bottom: none;
}

.wafu-product-link:hover {
    color: #1a6dcc;
}

/* ===== 咨询卡片 ===== */
.wafu-consult-card {
    background: linear-gradient(135deg, #4a9df5 0%, #1a6dcc 100%);
    color: #fff;
    box-shadow: 0 8px 20px rgba(26, 109, 204, .3);
    text-align: center;
    position: relative;
    overflow: hidden;
    border: 1px solid #4a9df5;
}

.wafu-consult-title {
    font-size: 1.4rem;
    margin: 0 0 15px;
    font-weight: 600;
}

.wafu-consult-desc {
    font-size: .9rem;
    line-height: 1.5;
    margin-bottom: 20px;
    opacity: .9;
}

.wafu-consult-btn {
    display: inline-block;
    background: #fff;
    color: #1a6dcc;
    padding: 10px 25px;
    border-radius: 25px;
    font-weight: 600;
    font-size: .95rem;
    margin-bottom: 20px;
    transition: all .3s ease;
    box-shadow: 0 4px 10px rgba(0, 0, 0, .1);
    text-decoration: none;
}

.wafu-consult-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, .15);
}

.wafu-contact-info {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: .85rem;
    opacity: .9;
}

.wafu-contact-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

/* ===== 面包屑导航 ===== */
.breadcrumb-nav {

    width: 100%;
    background-color: #f5f7fa;

    position: relative;
    z-index: 10;
    color: #000;
    /* 默认文本颜色，未选中项为黑色 */
}

.breadcrumb-inner {

    margin-top: 120px;
    width: 50%;
    max-width: 1400px;
    margin-left: 200px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
    flex-wrap: wrap;
}

.breadcrumb-item {
    color: #000;
    /* 未选中项为黑色 */
    text-decoration: none;
    transition: color 0.2s ease;
}

.breadcrumb-item:hover,
.breadcrumb-item:focus {
    color: #1a73e8;
    /* 移入时变为蓝色 */
    outline: none;
    text-decoration: none;
}

.breadcrumb-current {
    text-decoration: none;
    color: #1a73e8;
    /* 当前项为蓝色 */
    font-weight: 500;
}

.breadcrumb-separator {
    color: #999;
    user-select: none;
    line-height: 1;
}

/* =========================================================
   移动端补充样式（全站 kebab-case 命名统一）
   ========================================================= */

@media (max-width: 1200px) {
    .wafu-tech-article {
        padding: 0 100px;
    }

    .breadcrumb-inner {
        margin-bottom: 20px;
        margin-left: 100px;
        width: 70%;
    }
}

@media (max-width: 992px) {
    .wafu-tech-article {
        padding: 0 50px;
    }

    .breadcrumb-inner {
        margin-left: 50px;
        width: 80%;
    }
}

@media (max-width: 768px) {

    /* ---- 布局 ---- */
    .wafu-tech-article {
        flex-direction: column;
        padding: 0 20px;
        margin: 20px 0;
    }

    .wafu-main-content {
        width: 100%;
        margin-right: 0;
        margin-bottom: 20px;
        padding: 20px;
    }

    .wafu-side-bar {
        width: 100%;
    }

    /* ---- 面包屑 ---- */
    .breadcrumb-inner {
        margin-top: 0;
        margin-left: 20px;
        width: calc(100% - 40px);
        font-size: 0.9rem;
        gap: 6px;
    }

    /* ---- 标题与正文 ---- */
    .wafu-article-title {
        font-size: 1.6rem;
        text-align: center;
    }

    .wafu-article-meta {
        font-size: 0.85rem;
        justify-content: center;
    }

    .wafu-article-body {
        font-size: 0.95rem;
    }

    .wafu-heading-2 {
        font-size: 1.3rem;
        margin-top: 20px;
    }

    /* ---- 图片 ---- */
    .wafu-image-box {
        margin: 15px 0;
        padding: 8px;
    }

    .wafu-image {
        max-width: 82% !important;
        max-height: 300px;
        object-fit: contain;
        margin: 0 auto;
    }

    .wafu-checklist-card__media {
        min-height: 120px;
        padding: 10px;
    }

    .wafu-checklist-card__media img {
        max-height: 100px;
    }

    .wafu-cert-item img {
        max-height: 180px;
        margin: 0 auto;
        object-fit: contain;
    }

    .wafu-image-caption {
        font-size: 0.85rem;
    }

    .wafu-comparison-table table {
        font-size: 12px;
    }

    .wafu-comparison-table th,
    .wafu-comparison-table td {
        padding: 8px;
    }

    /* ---- 分享/标签 ---- */
    .wafu-share-section {
        justify-content: center;
    }

    .wafu-share-buttons {
        justify-content: center;
        flex-wrap: wrap;
        gap: 10px;
    }

    .wafu-related-tags {
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
    }

    .wafu-tag-list {
        justify-content: flex-start;
        gap: 8px;
        width: 100%;
        flex: 0 0 auto;
    }

    .wafu-tag-item {
        padding: 5px 12px;
        font-size: 0.85rem;
    }

    /* ---- 文章导航 ---- */
    .wafu-article-nav {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .wafu-nav-prev,
    .wafu-nav-next {
        grid-column: 1;
        justify-content: flex-start !important;
        text-align: left !important;
    }

    .wafu-nav-next .wafu-nav-content {
        align-items: flex-start;
        text-align: left;
    }

    /* ---- 侧边栏卡片 ---- */
    .wafu-about-card,
    .wafu-related-articles,
    .wafu-hot-products {
        padding: 15px;
        margin-bottom: 20px;
    }

    .wafu-brand-logo {
        width: 60px;
        height: 60px;
    }

    .wafu-side-title {
        font-size: 1.1rem;
    }

    /* ---- 咨询卡片 ---- */
    .wafu-consult-card {
        padding: 20px 15px;
    }

    .wafu-consult-title {
        font-size: 1.2rem;
    }

    .wafu-consult-btn {
        padding: 8px 20px;
        font-size: 0.9rem;
    }

    .wafu-contact-info {
        font-size: 0.8rem;
    }

    /* ---- 圆形分享按钮 ---- */
    .share-round {
        width: 36px;
        height: 36px;
    }

    .share-round .icon-weibo,
    .share-round .icon-facebook {
        width: 18px;
        height: 18px;
    }
}

/* 超小屏 */
@media (max-width: 480px) {
    .wafu-image {
        max-width: 78% !important;
        max-height: 260px;
        object-fit: contain;
    }

    .wafu-checklist-card__media img {
        max-height: 88px;
    }

    .wafu-cert-item img {
        max-height: 160px;
    }

    .wafu-tech-article {
        padding: 0 15px;
        margin: 15px 0;
    }

    .wafu-main-content {
        padding: 15px;
    }

    .breadcrumb-inner {
        margin-top: 0;

        margin-left: 15px;
        width: calc(100% - 30px);
        font-size: 0.8rem;

    }

    .wafu-article-title {
        font-size: 1.4rem;
    }

    .wafu-article-meta {
        font-size: 0.8rem;
    }

    .wafu-article-body {
        font-size: 0.9rem;
    }

    .wafu-heading-2 {
        font-size: 1.2rem;
    }

    .wafu-image-box {
        margin: 10px 0;
        padding: 8px;
    }

    .wafu-share-buttons {
        gap: 8px;
    }

    .wafu-tag-item {
        padding: 4px 10px;
        font-size: 0.8rem;
    }

    .wafu-about-card,
    .wafu-related-articles,
    .wafu-hot-products {
        padding: 12px;
    }

    .wafu-brand-logo {
        width: 50px;
        height: 50px;
    }

    .wafu-side-title {
        font-size: 1.1rem;
    }

    .wafu-consult-card {
        padding: 15px 12px;
    }

    .wafu-consult-btn {
        padding: 8px 18px;
        font-size: 0.85rem;
    }
}

/* 横屏手机 */
@media (max-width: 768px) and (orientation: landscape) {
    .wafu-tech-article {
        flex-direction: row;
    }

    .wafu-main-content {
        width: 65%;
        margin-right: 20px;
        margin-bottom: 0;
    }

    .wafu-side-bar {
        width: 35%;
    }

    .breadcrumb-inner {
        margin-top: 0;
    }
}

/* 平板 */
@media (min-width: 769px) and (max-width: 1024px) {
    .wafu-tech-article {
        padding: 0 50px;
    }

    .breadcrumb-inner {
        margin-left: 50px;
        width: 80%;
    }

    .wafu-main-content {
        width: 65%;
    }

    .wafu-side-bar {
        width: 35%;
    }
}

/* 通用图片防溢出 */
img {
    max-width: 100%;
    height: auto;
}

.wafu-image-box .wafu-image {
    max-width: 72%;
    object-fit: contain;
}

/* ===== 正文链接（技术文章 — 全站统一色，含 :visited 防紫色） ===== */
.wafu-main-content .wafu-article-body a,
.wafu-main-content .wafu-article-body a:link,
.wafu-main-content .wafu-article-body a:visited,
.wafu-article-body a,
.wafu-article-body a:link,
.wafu-article-body a:visited {
    color: var(--wafu-link, #1a73e8);
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: color 0.2s ease;
}

.wafu-main-content .wafu-article-body a:hover,
.wafu-article-body a:hover {
    color: var(--wafu-link-hover, #1557b0);
}

/* ===== 七步检查清单卡片 ===== */
.wafu-checklist-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin: 28px 0 12px;
    align-items: stretch;
}

.wafu-checklist-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    background: #f8f9fb;
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.wafu-checklist-card__media {
    background: #fff;
    padding: 14px 12px;
    min-height: 168px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid #e8edf3;
}

.wafu-checklist-card__media picture {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

.wafu-checklist-card__media img {
    display: block;
    max-width: 100%;
    max-height: 140px;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 4px;
}

.wafu-checklist-card__body {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    padding: 14px 16px 16px;
    background: #f8f9fb;
}

.wafu-checklist-card__title {
    font-size: 1rem;
    font-weight: 700;
    color: #1a2a6c;
    margin: 0 0 6px;
    line-height: 1.4;
}

.wafu-checklist-card__num {
    display: inline-block;
    min-width: 1.6em;
    margin-right: 4px;
    color: #1a73e8;
    font-weight: 700;
}

.wafu-checklist-card__desc {
    font-size: 0.875rem;
    color: #666;
    margin: 0;
    line-height: 1.5;
}

@media (max-width: 992px) {
    .wafu-checklist-grid:not(.wafu-checklist-grid--five) {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .wafu-checklist-grid {
        gap: 12px;
        margin: 20px 0 10px;
    }

    .wafu-checklist-card__media {
        min-height: 100px;
        padding: 8px 6px;
    }

    .wafu-checklist-card__body {
        padding: 10px 10px 12px;
    }

    .wafu-checklist-card__title {
        font-size: 0.9rem;
    }

    .wafu-checklist-card__desc {
        font-size: 0.8rem;
        line-height: 1.4;
    }
}

@media (max-width: 480px) {
    .wafu-checklist-grid {
        gap: 10px;
    }

    .wafu-checklist-card__title {
        font-size: 0.85rem;
    }

    .wafu-checklist-card__desc {
        font-size: 0.75rem;
    }
}

/* 5 张指标卡：紧凑布局 */
.wafu-article-body > p:has(+ .wafu-checklist-grid--five) {
    margin-bottom: 8px;
}

.wafu-checklist-grid--five {
    margin: 10px 0 6px;
    gap: 10px;
    max-width: none;
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.wafu-checklist-grid--five + .wafu-heading-2 {
    margin-top: 16px;
}

.wafu-checklist-grid--five .wafu-checklist-card {
    height: auto;
    min-height: 0;
}

.wafu-checklist-grid--five .wafu-checklist-card__body {
    padding: 10px 12px;
}

.wafu-checklist-grid--five .wafu-checklist-card__title {
    font-size: 0.9rem;
    margin-bottom: 4px;
}

.wafu-checklist-grid--five .wafu-checklist-card__desc {
    font-size: 0.8rem;
    line-height: 1.4;
}

@media (min-width: 769px) {
    .wafu-checklist-grid--five .wafu-checklist-card:nth-child(1),
    .wafu-checklist-grid--five .wafu-checklist-card:nth-child(2),
    .wafu-checklist-grid--five .wafu-checklist-card:nth-child(3),
    .wafu-checklist-grid--five .wafu-checklist-card:nth-child(4),
    .wafu-checklist-grid--five .wafu-checklist-card:nth-child(5) {
        grid-column: auto;
    }
}

@media (max-width: 992px) {
    .wafu-checklist-grid--five {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 768px) {
    .wafu-checklist-grid--five {
        max-width: none;
        grid-template-columns: 1fr;
        margin: 8px 0 4px;
        gap: 8px;
    }
}

/* ===== 认证与专利展示 ===== */
.wafu-cert-summary {
    font-size: 1rem;
    font-weight: 700;
    color: #1a2a6c;
    margin: 0 0 20px;
    letter-spacing: 0.02em;
}

.wafu-cert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin: 0 0 28px;
}

.wafu-cert-item {
    margin: 0;
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.wafu-cert-item picture {
    display: block;
    background: #f8f9fb;
    padding: 10px;
}

.wafu-cert-item img {
    display: block;
    width: 100%;
    height: auto;
    object-fit: contain;
}

.wafu-cert-label {
    margin: 0;
    padding: 10px 12px;
    font-size: 0.875rem;
    font-weight: 700;
    color: #1a73e8;
    text-align: center;
    background: #f8f9fb;
    border-top: 1px solid #e0e0e0;
    height:100%;
}

@media (max-width: 900px) {
    .wafu-cert-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .wafu-cert-grid {
        gap: 12px;
    }

    .wafu-cert-item picture {
        padding: 8px;
    }

    .wafu-cert-label {
        padding: 8px 6px;
        font-size: 0.8rem;
        line-height: 1.35;
    }
}

@media (max-width: 480px) {
    .wafu-cert-grid {
        gap: 10px;
    }

    .wafu-cert-label {
        font-size: 0.75rem;
    }
}

/* ===== Technisches Diagramm-Platzhalter (durch finale Assets ersetzen) ===== */
.wafu-image-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 280px;
    width: 72%;
    margin: 0 auto;
    background: #fff;
    border: 1px dashed #e0e0e0;
    border-radius: 8px;
    padding: 24px 16px;
    text-align: center;
}

.wafu-image-placeholder__label {
    font-size: 0.8rem;
    font-weight: 600;
    color: #1a73e8;
    margin-bottom: 8px;
}

.wafu-image-placeholder__desc {
    font-size: 0.875rem;
    color: #666;
    line-height: 1.5;
}

/* ===== Topic Cluster (B2B-Kompatibilität) ===== */
.wafu-topic-cluster {
    background: linear-gradient(135deg, #f4f8ff 0%, #eef4fc 100%);
    border: 1px solid #c8daf5;
    border-left: 4px solid #1a6dcc;
    border-radius: 10px;
    padding: 22px 24px;
    margin: 28px 0 32px;
}

.wafu-topic-cluster--sidebar {
    background: #fff;
    border: 1px solid #f0f0f0;
    border-left: 4px solid #1a6dcc;
    border-radius: 8px;
    padding: 20px;
    margin: 0 0 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, .05);
}

.wafu-topic-cluster-eyebrow {
    font-size: .75rem;
    font-weight: 700;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: #1a6dcc;
    margin: 0 0 8px;
}

.wafu-topic-cluster-heading {
    margin: 0 0 10px;
    color: #1a2a6c;
    font-size: 1.15rem;
    line-height: 1.4;
}

.wafu-topic-cluster-lead {
    font-size: .92rem;
    color: #555;
    line-height: 1.55;
    margin: 0 0 16px;
}

.wafu-topic-cluster-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.wafu-topic-cluster-item {
    display: grid;
    grid-template-columns: 130px 1fr;
    gap: 10px;
    align-items: start;
    padding: 10px 12px;
    background: #fff;
    border: 1px solid #e4ecf7;
    border-radius: 8px;
}

.wafu-topic-cluster-item.is-current {
    background: #1a6dcc;
    border-color: #1a6dcc;
}

.wafu-topic-cluster-item.is-current .wafu-topic-cluster-role,
.wafu-topic-cluster-item.is-current .wafu-topic-cluster-title {
    color: #fff;
}

.wafu-topic-cluster-role {
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .04em;
    text-transform: uppercase;
    color: #1a6dcc;
    line-height: 1.35;
}

.wafu-topic-cluster-link,
.wafu-topic-cluster-title {
    font-size: .92rem;
    font-weight: 600;
    line-height: 1.45;
    color: #222;
    text-decoration: none;
}

.wafu-topic-cluster-link:hover,
.wafu-topic-cluster-link:focus {
    color: #1a6dcc;
    text-decoration: underline;
}

.wafu-topic-cluster-list--sidebar .wafu-topic-cluster-item {
    grid-template-columns: 1fr;
    gap: 4px;
    padding: 10px;
}

.wafu-topic-cluster-list--sidebar .wafu-topic-cluster-link,
.wafu-topic-cluster-list--sidebar .wafu-topic-cluster-title {
    font-size: .88rem;
}

@media (max-width: 640px) {
    .wafu-topic-cluster-item {
        grid-template-columns: 1fr;
        gap: 4px;
    }
}

/* ===== Article table of contents ===== */
.wafu-toc {
    margin: 30px 0 36px;
    padding: 22px;
    border: 1px solid #d9e6f5;
    border-radius: 14px;
    background: linear-gradient(135deg, #f8fbff 0%, #eef5ff 100%);
    box-shadow: 0 10px 26px rgba(26, 86, 160, .08);
}

.wafu-toc .wafu-heading-2 {
    display: flex;
    align-items: center;
    gap: 9px;
    margin: 0 0 16px;
    padding: 0;
    border: 0;
    color: #1d3d67;
    font-size: 1.12rem;
}

.wafu-toc .wafu-heading-2::before {
    width: 4px;
    height: 1.2em;
    border-radius: 99px;
    background: #1a6dcc;
    content: '';
}

.wafu-toc .wafu-ordered-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 9px;
    margin: 0;
    padding: 0;
    list-style: none;
    counter-reset: toc-item;
}

.wafu-toc .wafu-list-item {
    display: flex;
    align-items: stretch;
    min-width: 0;
    margin: 0;
    counter-increment: toc-item;
}

.wafu-toc .wafu-list-item::before {
    display: grid;
    flex: 0 0 31px;
    width: 31px;
    height: 31px;
    place-items: center;
    margin: 9px 8px 0 0;
    border-radius: 50%;
    background: #e4f0ff;
    color: #1c65b4;
    font-size: .78rem;
    font-weight: 800;
    content: counter(toc-item, decimal-leading-zero);
    transition: background .2s ease, color .2s ease;
    z-index: 1;
}

.wafu-toc .wafu-list-item a {
    display: flex;
    width: 100%;
    min-height: 49px;
    align-items: center;
    padding: 9px 12px;
    border: 1px solid #dce7f3;
    border-radius: 9px;
    background: #fff;
    color: #28486f;
    font-size: .93rem;
    font-weight: 650;
    line-height: 1.42;
    text-decoration: none;
    transition: border-color .2s ease, box-shadow .2s ease, color .2s ease, transform .2s ease;
}

.wafu-toc .wafu-list-item:hover a,
.wafu-toc .wafu-list-item a:focus-visible {
    border-color: #6d9ed3;
    box-shadow: 0 5px 14px rgba(25, 91, 166, .13);
    color: #14559e;
    outline: 0;
    transform: translateY(-1px);
}

.wafu-toc .wafu-list-item:hover::before,
.wafu-toc .wafu-list-item:focus-within::before {
    background: #1a6dcc;
    color: #fff;
}

@media (max-width: 640px) {
    .wafu-toc {
        margin: 24px 0 30px;
        padding: 16px;
    }

    .wafu-toc .wafu-ordered-list {
        grid-template-columns: 1fr;
        gap: 7px;
    }

    .wafu-toc .wafu-list-item a {
        min-height: 46px;
        font-size: .91rem;
    }
}

/* Smart-Lock OEM After-Sales-Support article */
.wafu-after-sales-toc {
    margin: 28px 0 34px;
    padding: 22px;
    border: 1px solid #dbe5f2;
    border-radius: 14px;
    background: linear-gradient(135deg, #f8fbff 0%, #eef5ff 100%);
}

.wafu-after-sales-toc-label {
    margin: 0 0 14px;
    color: #1557b0;
    font-size: .9rem;
    font-weight: 700;
    letter-spacing: .08em;
}

.wafu-after-sales-toc ol {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 9px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.wafu-after-sales-toc li {
    margin: 0;
}

.wafu-after-sales-toc a {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 48px;
    padding: 10px 12px;
    border: 1px solid #e0e8f2;
    border-radius: 9px;
    background: #fff;
    color: #263d5b;
    font-size: .94rem;
    line-height: 1.45;
    text-decoration: none;
    transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}

.wafu-after-sales-toc a:hover {
    border-color: #4d86c9;
    box-shadow: 0 5px 14px rgba(35, 92, 160, .12);
    transform: translateY(-1px);
}

.wafu-after-sales-toc-index {
    flex: 0 0 auto;
    color: #276db5;
    font-size: .82rem;
    font-weight: 800;
}

.wafu-question-groups {
    display: grid;
    gap: 12px;
    margin: 20px 0 28px;
}

.wafu-question-group {
    overflow: hidden;
    border: 1px solid #dce5ef;
    border-radius: 12px;
    background: #fff;
}

.wafu-question-group summary {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px 17px;
    color: #203b60;
    font-weight: 700;
    line-height: 1.45;
    cursor: pointer;
    list-style: none;
}

.wafu-question-group summary::-webkit-details-marker {
    display: none;
}

.wafu-question-group summary::after {
    content: '+';
    margin-left: 0;
    color: #276db5;
    font-size: 1.45rem;
    font-weight: 400;
    line-height: 1;
}

.wafu-question-group[open] summary {
    border-bottom: 1px solid #e6edf5;
    background: #f7faff;
}

.wafu-question-group[open] summary::after {
    content: '−';
}

.wafu-question-group-count {
    margin-left: auto;
    color: #6c7d92;
    font-size: .82rem;
    font-weight: 500;
    white-space: nowrap;
}

.wafu-question-group ol {
    margin: 0;
    padding: 14px 22px 16px 42px;
    color: #40546e;
    line-height: 1.8;
}

.wafu-question-group li {
    margin: 0 0 8px;
    padding-left: 2px;
}

.wafu-question-group li:last-child {
    margin-bottom: 0;
}

@media (max-width: 640px) {
    .wafu-after-sales-toc {
        margin: 20px 0 28px;
        padding: 16px;
    }

    .wafu-after-sales-toc ol {
        grid-template-columns: 1fr;
        gap: 7px;
    }

    .wafu-after-sales-toc a {
        min-height: 44px;
        padding: 9px 10px;
        font-size: .9rem;
    }

    .wafu-question-group summary {
        padding: 14px;
        font-size: .96rem;
    }

    .wafu-question-group ol {
        padding: 12px 16px 14px 34px;
        font-size: .94rem;
    }

    .footer-content {
        grid-template-columns: 1fr !important;
        gap: 28px !important;
        padding: 0 24px !important;
    }

    .footer-col,
    .footer-col:first-child,
    .footer-col:nth-child(5) {
        grid-column: auto !important;
        padding: 0 !important;
        text-align: left !important;
    }

    .footer-col:first-child {
        text-align: center !important;
    }

    .footer-socials {
        justify-content: center !important;
    }

    .footer-col .footer-title {
        font-size: 18px !important;
    }

    .footer-list a {
        min-height: 0 !important;
        padding: 5px 0 !important;
        justify-content: flex-start !important;
    }

    .footer-contact-item {
        flex-direction: row !important;
        align-items: flex-start !important;
        text-align: left !important;
    }
}