/* ============================================
   SEO 优化元素样式
   配色遵循项目主色调：#ac0612(红) #43250e(棕) #b8b2a5(灰棕)
   ============================================ */

/* --- SEO H1 隐藏标签（仅供搜索引擎读取） --- */
.seo-h1 {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* --- 面包屑导航 --- */
.breadcrumb {
    font-size: 13px;
    color: #888;
    padding: 12px 0;
    line-height: 1.6;
    border-bottom: 1px solid #f0ebe3;
    margin-bottom: 0;
}

.breadcrumb a {
    color: #666;
    text-decoration: none;
    transition: color 0.2s ease;
}

.breadcrumb a:hover {
    color: #ac0612;
    text-decoration: none;
}

.breadcrumb span.current {
    color: #43250e;
    font-weight: 500;
}

/* --- 列表页 H1 标题 --- */
.page-title-h1 {
    font-size: 20px;
    font-weight: 600;
    color: #43250e;
    margin: 12px 0 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid #ac0612;
    display: inline-block;
    line-height: 1.4;
    letter-spacing: 1px;
}

/* --- 产品详情页 H1 --- */
.product-detail-h1 {
    font-size: 22px;
    font-weight: 600;
    color: #333;
    margin: 8px 0 12px;
    line-height: 1.5;
    letter-spacing: 0.5px;
}

/* --- 资讯详情页 H1 --- */
.news-bt {
    font-size: 22px;
    font-weight: 600;
    color: #333;
    margin: 0 0 15px;
    line-height: 1.5;
    text-align: center;
}

/* --- 产品详情页 H2 标题 --- */
.detail-section-title {
    font-size: 18px;
    font-weight: 600;
    color: #43250e;
    margin: 20px 0 12px;
    padding-left: 12px;
    border-left: 3px solid #ac0612;
    line-height: 1.4;
}

/* --- 产品详情页 H3 商品参数 --- */
.param-title {
    font-size: 16px;
    font-weight: 600;
    color: #43250e;
    margin: 15px 0 10px;
    padding: 8px 12px;
    background: #faf8f5;
    border-radius: 4px;
    border-left: 3px solid #b8b2a5;
    line-height: 1.4;
}

/* --- 资讯列表页 H1 --- */
.news-list-h1 {
    font-size: 20px;
    font-weight: 600;
    color: #43250e;
    margin: 12px 0 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid #ac0612;
    display: inline-block;
    line-height: 1.4;
}

/* --- 404 页面优化 --- */
.error-container .error-code {
    color: #ac0612;
}

.error-container .btn-primary {
    background: #ac0612;
}

.error-container .btn-primary:hover {
    background: #8a050f;
}

.error-container .btn-outline {
    border-color: #ac0612;
    color: #ac0612;
}

.error-container .btn-outline:hover {
    background: #ac0612;
    color: #fff;
}

.error-container .quick-nav a {
    color: #ac0612;
}