/* ============================================================
   卡宽优选 - 自定义样式表
   遵循 WordPress 设计风格，SEO 语义化结构
   ============================================================ */

/* ---------- CSS 变量 ---------- */
:root {
    --primary-color: #1a73e8;
    --primary-hover: #1557b0;
    --accent-color: #ff6b35;
    --text-color: #333333;
    --text-light: #666666;
    --text-muted: #999999;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border-color: #e8e8e8;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    --transition: all 0.3s ease;
}

/* ---------- 全局样式 ---------- */
* {
    box-sizing: border-box;
}

body {
    font-family: var(--font-base);
    color: var(--text-color);
    background-color: #f5f6f8;
    line-height: 1.7;
    min-height: 100vh;
}

a {
    color: var(--primary-color);
    transition: var(--transition);
    text-decoration: none;
}

a:hover {
    color: var(--primary-hover);
}

img {
    max-width: 100%;
    height: auto;
}

/* ============================================================
   HEADER - 顶部导航栏
   ============================================================ */
.hd {
    position: sticky;
    top: 0;
    z-index: 1030;
    background: #fff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    border-bottom: 2px solid var(--border-color);
}

.hd .navbar {
    padding-top: 10px;
    padding-bottom: 10px;
}

/* Logo 品牌区域 */
.nb-logo {
    display: flex;
    align-items: center;
}

.nb-full {
    display: none;
}

@media (min-width: 576px) {
    .nb-full {
        display: flex;
        align-items: center;
    }
}
.navbar-brand {
    text-decoration: none !important;
}

.bd-ico {
    width: 100px;
    height: 50px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    overflow: hidden;
}

.bd-ico img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.bd-txt {
    line-height: 1.3;
}

.s-tt {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-color);
    margin: 0;
    letter-spacing: 1px;
}

.s-tag {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 400;
    letter-spacing: 0.5px;
}

/* 导航链接 */
.navbar-nav .nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-color);
    padding: 8px 14px !important;
    border-radius: var(--radius-sm);
    margin: 0 2px;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--primary-color) !important;
    background-color: rgba(26, 115, 232, 0.06);
}

/* 下拉菜单 */
.dropdown-menu {
    border: none;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    padding: 6px 0;
}

.dropdown-item {
    padding: 8px 20px;
    font-size: 0.9rem;
    transition: var(--transition);
}

.dropdown-item:hover {
    background-color: rgba(26, 115, 232, 0.06);
    color: var(--primary-color);
}

/* ============================================================
   MAIN - 主内容区
   ============================================================ */
.main {
    padding-top: 28px;
    padding-bottom: 40px;
}

/* ---------- Banner 轮播图 ---------- */
.bn-sec .carousel {
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    touch-action: pan-y pinch-zoom;
    user-select: none;
}

.carousel-item img {
    aspect-ratio: 800 / 360;
    object-fit: cover;
    object-position: center;
    pointer-events: none;
}

.car-lnk {
    display: block;
    width: 100%;
    text-decoration: none;
}

/* 轮播指示器 */
.carousel-indicators [data-bs-target] {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 2px solid #fff;
    background: transparent;
    opacity: 0.7;
}

.carousel-indicators .active {
    background: #fff;
    opacity: 1;
}

/* Banner 轮播容器圆角 */
.bn-sec .carousel-inner {
    border-radius: var(--radius-md);
    overflow: hidden;
}

/* ---------- TAB 文章列表区 ---------- */
.tab-sec {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    margin-bottom: 24px;
}

.section-header {
    padding: 18px 20px 0;
}

.section-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-color);
    margin: 0;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 48px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

/* TAB 导航 */
.tab-nav {
    border-bottom: 1px solid var(--border-color);
    padding: 0 20px;
    flex-wrap: wrap;
}

.tab-nav .nav-item {
    flex-shrink: 0;
}

.tab-nav .nav-link {
    border: none !important;
    color: var(--text-light);
    padding: 12px 18px;
    font-size: 0.92rem;
    font-weight: 500;
    cursor: pointer;
    position: relative;
    transition: var(--transition);
    border-radius: 0;
}

.tab-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 60%;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px 2px 0 0;
    transition: transform 0.25s ease;
}

.tab-nav .nav-link:hover,
.tab-nav .nav-link.active {
    color: var(--primary-color) !important;
    background: transparent !important;
}

.tab-nav .nav-link.active::after,
.tab-nav .nav-link:hover::after {
    transform: translateX(-50%) scaleX(1);
}

/* TAB 面板 */
.tab-pn {
    display: none;
    padding: 20px;
}

.tab-pn.active {
    display: block;
    animation: fadeIn 0.35s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 文章列表 */
.art-loop {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.art {
    padding: 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    transition: var(--transition);
    background: var(--bg-white);
}

.art:hover {
    border-color: #c8d6e5;
    box-shadow: var(--shadow-sm);
    transform: translateY(-1px);
}

.art-img a {
    display: block;
    overflow: hidden;
    border-radius: var(--radius-sm);
}

.art-img img {
    width: 100%;
    aspect-ratio: 300 / 200;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.art:hover .art-img img {
    transform: scale(1.05);
}

.art-bd {
    padding-left: 16px !important;
}

.art-tt {
    font-size: 1.05rem;
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: 8px;
}

.art-tt a {
    color: var(--text-color);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.art-tt a:hover {
    color: var(--primary-color);
}

.art-sum {
    font-size: 0.85rem;
    color: var(--text-light);
    line-height: 1.65;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.art-meta {
    font-size: 0.78rem;
    color: var(--text-muted);
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.art-meta i {
    margin-right: 2px;
    font-size: 0.75rem;
}

/* 查看更多按钮 */
.more-wp {
    padding: 4px 20px 8px;
    text-align: center;
}

.btn-m {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary-color);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 8px 24px;
    border: 1px solid var(--primary-color);
    border-radius: 20px;
    transition: var(--transition);
}

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

/* ============================================================
   CATEGORY PAGE - 栏目列表页
   ============================================================ */

/* 面包屑导航 */
.bc-nav {
    margin-bottom: 4px;
}

.bc-nav .breadcrumb {
    margin: 0;
    padding: 0;
    background: transparent;
    font-size: 0.82rem;
}

.bc-nav .breadcrumb-item a {
    color: var(--text-muted);
    text-decoration: none;
}

.bc-nav .breadcrumb-item a:hover {
    color: var(--primary-color);
}

.bc-nav .breadcrumb-item.active {
    color: var(--text-color);
    font-weight: 500;
}

.breadcrumb-item + .breadcrumb-item::before {
    color: var(--text-muted);
    content: "›";
    font-size: 1rem;
    line-height: 1;
}

/* 栏目头部 */
.category-header {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 24px 24px 20px;
    margin-bottom: 20px;
}

.category-title {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-color);
    margin: 0 0 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.category-title::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 52px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

.category-description {
    font-size: 0.88rem;
    color: var(--text-light);
    line-height: 1.8;
}

.category-description p {
    margin: 0;
}

/* 栏目文章列表 */
.category-art-loop {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 24px;
}

.category-art .art-bd {
    display: flex;
    flex-direction: column;
}

/* 文章标签 */
.a-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 8px;
}

.a-tag {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--primary-color);
    background: rgba(26, 115, 232, 0.07);
    padding: 3px 10px;
    border-radius: 12px;
    transition: var(--transition);
    text-decoration: none;
    border: 1px solid transparent;
}

.a-tag:hover {
    color: #fff;
    background: var(--primary-color);
    border-color: var(--primary-color);
}

/* 分页样式 */
.pg-wrap {
    display: flex;
    justify-content: center;
    gap: 3px;
    background: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 18px 20px;
    margin-bottom: 24px;
}

.pg-a {
    display: inline-block;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-color);
    font-size: 0.88rem;
    font-weight: 500;
    padding: 8px 14px;
    transition: var(--transition);
    background: var(--bg-white);
    min-width: 40px;
    text-align: center;
    text-decoration: none;
}

.pg-a:hover {
    background: rgba(26, 115, 232, 0.06);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.pg-on {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(26, 115, 232, 0.3);
}

.pg-off {
    background: var(--bg-light);
    color: var(--text-muted);
    border-color: var(--border-color);
    pointer-events: none;
}

.pg-elp {
    color: var(--text-muted);
    pointer-events: none;
}

/* ============================================================
   ARTICLE DETAIL PAGE - 文章详情页
   ============================================================ */

/* 推荐流量卡模块 */
.rec-sec {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 10px 14px;
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

a.rec-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #f5f7fa;
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    transition: var(--transition);
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

a.rec-item:hover {
    background: #edf1f7;
    box-shadow: var(--shadow-sm);
    text-decoration: none;
    color: inherit;
}

.cd-l {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
    min-width: 0;
}

.cd-ico {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.cd-info {
    flex: 1;
    min-width: 0;
}

.cd-nr {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
}

.cd-n {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-color);
}

.cd-bg {
    font-size: 0.72rem;
    font-weight: 600;
    color: #e74c3c;
    background: rgba(231, 76, 60, 0.08);
    padding: 2px 8px;
    border-radius: 4px;
    border: 1px solid rgba(231, 76, 60, 0.2);
}

.cd-desc {
    font-size: 0.78rem;
    color: var(--text-light);
    margin: 0;
}

.btn-app {
    display: inline-block;
    background: linear-gradient(135deg, #ff6b6b, #ee5a5a);
    color: #fff;
    font-size: 0.82rem;
    font-weight: 600;
    padding: 8px 18px;
    border-radius: 20px;
    text-decoration: none;
    transition: var(--transition);
    white-space: nowrap;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(238, 90, 90, 0.25);
}

.btn-app:hover {
    background: linear-gradient(135deg, #ee5a5a, #dc4444);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(238, 90, 90, 0.35);
}

/* 文章底部 CTA 按钮 */
.btn-cta {
    display: block;
    text-align: center;
    background: linear-gradient(135deg, #ff6b6b, #ee5a5a);
    color: #fff;
    font-size: 1.1rem;
    font-weight: 700;
    padding: 14px 32px;
    border-radius: 8px;
    text-decoration: none;
    transition: var(--transition);
    box-shadow: 0 4px 16px rgba(238, 90, 90, 0.3);
    margin: 24px 0;
    letter-spacing: 1px;
}

.btn-cta:hover {
    background: linear-gradient(135deg, #ee5a5a, #dc4444);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(238, 90, 90, 0.4);
}

/* 文章主体容器 */
.ad {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 28px 24px;
    margin-bottom: 24px;
}

/* 文章头部 */
.ad-hd {
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.ad-tt {
    font-size: 1.65rem;
    font-weight: 700;
    color: var(--text-color);
    line-height: 1.5;
    margin: 0 0 14px;
}

.ad-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.82rem;
    color: var(--text-muted);
}

.meta-i {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.meta-i i {
    font-size: 0.85rem;
}

.meta-i a {
    color: var(--primary-color);
    font-weight: 500;
}

.meta-i a:hover {
    text-decoration: underline;
}

/* 文章内容 */
.ad-bd {
    font-size: 0.95rem;
    line-height: 1.9;
    color: var(--text-color);
    margin-bottom: 28px;
}

.ad-bd img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
}

.ad-bd p {
    margin-bottom: 16px;
}

.ad-bd p:first-child {
    margin-top: 0;
}

.ad-bd ul,
.ad-bd ol {
    margin-bottom: 16px;
    padding-left: 1.5em;
}

.ad-bd li {
    margin-bottom: 8px;
    line-height: 1.8;
}

/* 文章内容中的标题样式 */
.ad-bd h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-color);
    margin: 32px 0 14px;
    padding: 12px 16px;
    background: linear-gradient(135deg, #f0f4ff, #e8f0fe);
    border-left: 4px solid var(--primary-color);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    line-height: 1.5;
}

.ad-bd h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-color);
    margin: 24px 0 12px;
    padding-left: 14px;
    border-left: 3px solid #4285f4;
    line-height: 1.5;
}

.ad-bd h4 {
    font-size: 1rem;
    font-weight: 600;
    color: #444;
    margin: 20px 0 10px;
    padding-bottom: 6px;
    border-bottom: 1px dashed #d0d7de;
    line-height: 1.5;
}

.ad-bd strong {
    color: var(--primary-color);
    font-weight: 600;
}

/* 文章提示框 */
.ad-ntc {
    display: flex;
    gap: 14px;
    background: #f0f4f8;
    border: 1px solid #d8e2ed;
    border-left: 4px solid var(--accent-color);
    border-radius: var(--radius-sm);
    padding: 16px 18px;
    margin-bottom: 24px;
}

.ntc-ico {
    flex-shrink: 0;
    font-size: 1.1rem;
    color: var(--accent-color);
    padding-top: 1px;
}

.ntc-bd {
    flex: 1;
    min-width: 0;
}

.ntc-bd p {
    margin: 0 0 6px;
    font-size: 0.82rem;
    color: #555;
    line-height: 1.7;
}

.ntc-bd p:last-child {
    margin-bottom: 0;
}

/* 文章标签区 */
.ad-tags {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    padding-top: 18px;
    margin-bottom: 24px;
    border-top: 1px solid var(--border-color);
}

.tag-lb {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-color);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-right: 2px;
}

.tag-lb i {
    color: var(--primary-color);
}

.ad-tags .a-tag {
    font-size: 0.72rem;
}

/* 点赞按钮 */
.btn-like {
    display: flex;
    width: fit-content;
    align-items: center;
    gap: 6px;
    padding: 10px 22px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-muted);
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 22px;
    cursor: pointer;
    transition: var(--transition);
    margin: 0 auto 20px;
    user-select: none;
}

.btn-like:hover {
    border-color: #e74c3c;
    color: #e74c3c;
    box-shadow: 0 2px 8px rgba(231, 76, 60, 0.15);
}

.btn-like.liked {
    color: #fff;
    background: #e74c3c;
    border-color: #e74c3c;
}

.btn-like i {
    font-size: 1.05rem;
    transition: transform 0.3s;
}

.btn-like.liked i {
    animation: like-pop 0.4s ease;
}

@keyframes like-pop {
    0% { transform: scale(1); }
    50% { transform: scale(1.4); }
    100% { transform: scale(1); }
}

/* 评论区域 */
.cmt-sec {
    border-top: 1px solid var(--border-color);
    padding-top: 24px;
    margin-bottom: 24px;
}

.cmt-tt {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-color);
    margin: 0 0 18px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.cmt-tt::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

.cmt-form .form-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-color);
}

.cmt-form .required {
    color: #e74c3c;
}

.cmt-form .form-control {
    font-size: 0.88rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    transition: var(--transition);
}

.cmt-form .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(26, 115, 232, 0.15);
}

.btn-cmt {
    background: var(--primary-color);
    color: #fff;
    font-size: 0.9rem;
    font-weight: 600;
    padding: 10px 28px;
    border: none;
    border-radius: 20px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.btn-cmt:hover {
    background: var(--primary-hover);
    color: #fff;
    box-shadow: 0 4px 12px rgba(26, 115, 232, 0.35);
}

/* 评论列表区域 */
.cmts-sec {
    border-top: 1px solid var(--border-color);
    padding-top: 24px;
    margin-bottom: 24px;
}

.cmts-tt {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-color);
    margin: 0 0 18px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.cmts-tt::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--accent-color);
    border-radius: 2px;
}

.cmts-ls {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.cmt {
    display: flex;
    gap: 14px;
    padding: 16px 0;
    border-bottom: 1px solid #f0f0f0;
}

.cmt:last-child {
    border-bottom: none;
}

.cmt-av {
    flex-shrink: 0;
}

.cmt-av img {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    object-fit: cover;
}

.cmt-bd {
    flex: 1;
    min-width: 0;
}

.cmt-hd {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 6px;
}

.cmt-au {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-color);
}

.cmt-tm {
    font-size: 0.76rem;
    color: var(--text-muted);
}

.cmt-ct p {
    font-size: 0.88rem;
    color: var(--text-light);
    line-height: 1.65;
    margin: 0;
}

/* 上一篇 / 下一篇导航 */
.pn {
    margin-bottom: 28px;
}

.pn-item {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 16px 18px;
    height: 100%;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.pn-item:hover {
    border-color: #c8d6e5;
    box-shadow: var(--shadow-sm);
}

.pn-lb {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.pn-next {
    text-align: right;
}

.pn-next .pn-lb {
    justify-content: flex-end;
}

.pn-lnk {
    text-decoration: none;
    flex: 1;
}

.pn-lnk:hover .pn-tt {
    color: var(--primary-color);
}

.pn-tt {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-color);
    line-height: 1.5;
    margin: 0 0 6px;
    transition: var(--transition);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.pn-date {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* 相关文章 */
.rp-sec {
    border-top: 1px solid var(--border-color);
    padding-top: 24px;
}

.rp-tt {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-color);
    margin: 0 0 18px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.rp-tt::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

.rp-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}

.rp {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 12px;
    transition: var(--transition);
    background: var(--bg-white);
}

.rp:hover {
    border-color: #c8d6e5;
    box-shadow: var(--shadow-sm);
    transform: translateY(-1px);
}

.rp-img a {
    display: block;
    overflow: hidden;
    border-radius: 4px;
}

.rp-img img {
    width: 100%;
    aspect-ratio: 300 / 200;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.rp:hover .rp-img img {
    transform: scale(1.05);
}

.rp-bd {
    padding-left: 12px !important;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.rp-tt2 {
    font-size: 0.85rem;
    font-weight: 600;
    line-height: 1.5;
    margin: 0 0 4px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.rp-tt2 a {
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
}

.rp-tt2 a:hover {
    color: var(--primary-color);
}

.rp-sum {
    font-size: 0.75rem;
    color: var(--text-light);
    line-height: 1.5;
    margin: 0 0 4px;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.rp-date {
    font-size: 0.72rem;
    color: var(--text-muted);
}

/* ============================================================
   ASIDE - 侧边栏
   ============================================================ */
.sb {
    position: sticky;
    top: 80px;
}

/* ============================================================
   SERVICE PROMISE SECTION - 服务与承诺模块
   ============================================================ */
.svc-sec {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 32px 24px;
    margin-top: 24px;
    margin-bottom: 24px;
}

.svc-hd {
    text-align: center;
    margin-bottom: 28px;
}

.svc-tt {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
    margin: 0 0 8px;
}

.hl-txt {
    color: var(--primary-color);
}

.svc-sub {
    font-size: 0.9rem;
    color: var(--text-light);
    margin: 0;
}

.svc-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.svc {
    text-align: center;
    padding: 20px 12px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    border: 1px solid transparent;
}

.svc:hover {
    background: var(--bg-light);
    border-color: #e0e0e0;
    transform: translateY(-2px);
}

.svc-ico {
    width: 56px;
    height: 56px;
    margin: 0 auto 14px;
    background: linear-gradient(135deg, var(--primary-color), #4285f4);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.6rem;
}

.svc-tt2 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-color);
    margin: 0 0 8px;
}

.svc-desc {
    font-size: 0.78rem;
    color: var(--text-light);
    line-height: 1.6;
    margin: 0;
}

.sb-w {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 20px;
    margin-bottom: 20px;
}

.w-tt {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
    position: relative;
}

.w-tt span {
    position: relative;
}

.w-tt span::after {
    content: '';
    position: absolute;
    bottom: -11px;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

/* 最新文章列表 */
.w-latest {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.lp a {
    transition: var(--transition);
}

.lp-img {
    width: 80px;
    height: 80px;
    object-fit: cover;
    flex-shrink: 0;
    border-radius: var(--radius-sm) !important;
}

.lp-bd {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 80px;
}

.lp-tt {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-color);
    line-height: 1.5;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.lp:hover .lp-tt {
    color: var(--primary-color);
}

.lp-date {
    font-size: 0.72rem;
    color: var(--text-muted);
    padding-top: 2px;
}

/* 热门文章列表 */
.hot-ls,
.rand-ls {
    list-style: none;
    padding: 0;
    margin: 0;
}

.hot-ls li,
.rand-ls li {
    padding: 9px 0;
    border-bottom: 1px dashed #eee;
}

.hot-ls li:last-child,
.rand-ls li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.hot-ls a,
.rand-ls a {
    font-size: 0.87rem;
    color: var(--text-color);
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: var(--transition);
}

.hot-ls a:hover,
.rand-ls a:hover {
    color: var(--primary-color);
    padding-left: 4px;
}

/* 热门文章排名序号 */
.hot-ls li {
    counter-increment: hot-counter;
}

.hot-ls li a::before {
    content: counter(hot-counter);
    display: inline-block;
    width: 20px;
    height: 20px;
    line-height: 20px;
    text-align: center;
    font-size: 0.7rem;
    font-weight: 700;
    color: #fff;
    background: var(--text-muted);
    border-radius: 4px;
    margin-right: 8px;
    flex-shrink: 0;
}

.hot-ls li:nth-child(1) a::before { background: #e74c3c; }
.hot-ls li:nth-child(2) a::before { background: #e67e22; }
.hot-ls li:nth-child(3) a::before { background: #f39c12; }

/* 随机文章 */
.rand-ls li {
    padding-left: 0;
}

.rand-ls a::before {
    content: '\F285';
    font-family: 'bootstrap-icons';
    font-size: 0.65rem;
    margin-right: 6px;
    color: var(--text-muted);
}

/* 标签云 */
.tag-cd {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.tag-i {
    display: block;
    text-align: center;
    font-size: 0.78rem;
    color: var(--text-light);
    background: var(--bg-light);
    padding: 6px 4px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    border: 1px solid transparent;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.tag-i:hover {
    color: #fff;
    background: var(--primary-color);
    border-color: var(--primary-color);
}

/* 标签集合页 */
.tags-page-section {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 24px 22px;
    margin-bottom: 24px;
}

.tags-page-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tags-page-cloud a {
    display: inline-block;
    font-weight: 500;
    color: var(--text-color);
    background: #f0f4ff;
    border: 1px solid #dce3f0;
    border-radius: 20px;
    transition: var(--transition);
    text-decoration: none;
    position: relative;
    padding: 6px 14px;
    font-size: 0.85rem;
}

.tags-page-cloud a:hover {
    color: #fff;
    background: var(--primary-color);
    border-color: var(--primary-color);
    box-shadow: 0 3px 10px rgba(26, 115, 232, 0.25);
    transform: translateY(-1px);
}

/* ============================================================
   FOOTER - 底部
   ============================================================ */
.ft {
    background: #2c3e50;
    color: #bdc3c7;
    padding: 40px 0 0;
    margin-top: 30px;
}

.ft-w {
    margin-bottom: 24px;
}

.ft-tt {
    font-size: 1.05rem;
    font-weight: 700;
    color: #ecf0f1;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid rgba(255, 255, 255, 0.1);
    position: relative;
}

.ft-tt::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--primary-color);
}

.ft-abt {
    font-size: 0.85rem;
    line-height: 1.8;
    margin: 0;
}

.ft-ct {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ft-ct li {
    font-size: 0.85rem;
    padding: 5px 0;
}

.ft-ct i {
    margin-right: 6px;
    color: var(--primary-color);
}

.ft-wx {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
}

.ft-ci {
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
}

.ft-wx img {
    border-radius: var(--radius-sm);
    border: 3px solid rgba(255, 255, 255, 0.15);
    background: #fff;
    padding: 4px;
    flex-shrink: 0;
    transition: var(--transition);
}

.ft-wx img:hover {
    border-color: var(--primary-color);
    transform: scale(1.03);
}

.ft-wx .ft-wxid {
    margin: 0;
    font-size: 0.88rem;
    color: #ecf0f1;
    font-weight: 500;
}

.ft-wx .ft-wxid i {
    color: #07c160;
    margin-right: 5px;
}

.ft-wx .ft-time {
    margin: 0;
    font-size: 0.82rem;
    color: #95a5a6;
}

.ft-wx .ft-time i {
    margin-right: 5px;
    color: #f39c12;
}

.ft-wx .ft-tip {
    margin: 0;
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.5);
    padding-top: 6px;
    border-top: 1px dashed rgba(255, 255, 255, 0.1);
}

.ft-lks {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
}

.ft-lks a {
    font-size: 0.85rem;
    color: #bdc3c7;
    transition: var(--transition);
}

.ft-lks a:hover {
    color: #fff;
    padding-left: 4px;
}

.ft-btm {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 20px 0;
    margin-top: 16px;
}

.ft-cp {
    font-size: 0.8rem;
    color: #7f8c8d;
    margin: 0 0 4px;
}

.ft-icp {
    font-size: 0.78rem;
    margin: 0;
}

.ft-icp a {
    color: #7f8c8d;
}

.ft-icp a:hover {
    color: #fff;
}

/* ============================================================
   移动端底部固定导航 (仅在 < md 时显示)
   ============================================================ */
.m-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-white);
    border-top: 1px solid var(--border-color);
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.08);
    z-index: 1025;
    height: 56px;
}

.m-ls {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    height: 100%;
}

.m-item {
    flex: 1;
    text-align: center;
}

.m-lnk {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.68rem;
    transition: var(--transition);
    padding: 4px 0;
}

.m-lnk i {
    font-size: 1.3rem;
    margin-bottom: 2px;
    transition: var(--transition);
}

.m-lnk:hover,
.m-lnk.active-link {
    color: var(--primary-color);
}

/* 办卡按钮突出 */
.m-item:nth-child(3) .m-lnk i {
    color: var(--accent-color);
    font-size: 1.4rem;
}

/* ============================================================
   桌面端右侧浮动图标 (仅在 >= md 时显示)
   ============================================================ */

.fl {
    position: relative;
}

/* 透明桥接区域 - 防止鼠标从图标移到弹窗时 hover 丢失 */
.fl-wx::after {
    content: '';
    position: absolute;
    right: 56px;
    bottom: 0;
    width: 20px;
    height: 56px;
    z-index: 5;
}

.fl-ico {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    text-decoration: none;
    color: var(--text-color);
}

.fl-ico:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.fl-ico i {
    font-size: 1.4rem;
    line-height: 1;
}

.fl-ico span {
    font-size: 0.6rem;
    margin-top: 2px;
    line-height: 1.2;
}

/* 返回顶部按钮 - 默认隐藏，滚动后显示 */
.fl-top {
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.fl-top.visible {
    display: block;
    opacity: 1;
}

/* 微信浮层 */
.wx-pop {
    display: none;
    position: absolute;
    right: 68px;
    bottom: 0;
    background: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 16px;
    z-index: 10;
    width: 190px;
    text-align: center;
}

.fl-wx:hover .wx-pop {
    display: block;
}

.wx-pop-in {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.wx-qr img {
    width: 140px;
    height: 140px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.wx-id {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin: 10px 0 4px;
}

.wx-id {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-color);
    cursor: pointer;
    padding: 4px 12px;
    background: var(--bg-light);
    border-radius: 4px;
    margin: 0;
    transition: var(--transition);
    user-select: all;
}

.wx-id:hover {
    background: #e8f0fe;
    color: var(--primary-color);
}

.wx-tip {
    font-size: 0.68rem;
    color: var(--text-muted);
    margin: 6px 0 0;
}

/* ============================================================
   微信弹窗（移动端 Modal）
   ============================================================ */
.wx-mask {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.55);
    z-index: 1050;
    align-items: center;
    justify-content: center;
}

.wx-mask.active {
    display: flex;
}

.wx-modal {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 28px 24px 20px;
    width: 90%;
    max-width: 320px;
    position: relative;
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.wx-close {
    position: absolute;
    top: 8px;
    right: 14px;
    background: none;
    border: none;
    font-size: 1.6rem;
    color: var(--text-muted);
    cursor: pointer;
    line-height: 1;
    padding: 0;
}

.wx-close:hover {
    color: var(--text-color);
}

.wx-mtt {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 14px;
    color: var(--text-color);
}

.wx-mqr img {
    width: 160px;
    height: 160px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.wx-mid {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin: 12px 0 4px;
}

.wx-modal-id {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-color);
    cursor: pointer;
    padding: 8px 16px;
    background: var(--bg-light);
    border-radius: 6px;
    display: inline-block;
    transition: var(--transition);
    user-select: all;
}

.wx-modal-id:hover {
    background: #e8f0fe;
    color: var(--primary-color);
}

.wx-mtip {
    font-size: 0.72rem;
    color: var(--text-muted);
    margin: 8px 0 0;
}

/* ============================================================
   Toast - 复制成功提示
   ============================================================ */
.cp-toast {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.8);
    background: rgba(0, 0, 0, 0.82);
    color: #fff;
    padding: 12px 28px;
    border-radius: 24px;
    font-size: 0.9rem;
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.cp-toast.show {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

.cp-toast i {
    color: #4caf50;
    margin-right: 4px;
}

/* ============================================================
   响应式适配
   ============================================================ */

/* 平板端及以下 ( < 992px ) */
@media (max-width: 991.98px) {
    .main {
        padding-top: 16px;
    }

    /* 侧边栏在移动端取消粘性定位 */
    .sb {
        position: static;
        margin-top: 20px;
    }

    /* 文章标题缩小 */
    .art-tt {
        font-size: 0.95rem;
    }

    .art-sum {
        font-size: 0.8rem;
        -webkit-line-clamp: 2;
    }

    /* 栏目页面 */
    .category-header {
        padding: 20px 18px 16px;
    }

    .category-title {
        font-size: 1.35rem;
    }

    .category-description {
        font-size: 0.82rem;
    }

    /* 标签集合页 - 平板端 */
    .tags-page-section {
        padding: 18px 16px;
    }

    .tags-page-cloud {
        gap: 8px;
    }

    .tags-page-cloud a {
        padding: 5px 12px;
        font-size: 0.8rem;
    }

    /* 文章详情页 */
    .ad {
        padding: 22px 18px;
    }

    .ad-tt {
        font-size: 1.4rem;
    }

    .ad-bd {
        font-size: 0.9rem;
    }

    .ad-bd h2 {
        font-size: 1.15rem;
    }

    .ad-bd h3 {
        font-size: 1rem;
    }

    /* 推荐流量卡模块 - 平板端 */
    .rec-sec {
        padding: 8px 12px;
        gap: 5px;
    }

    .rec-item {
        padding: 7px 10px;
    }

    .cd-ico {
        width: 54px;
        height: 54px;
    }

    .cd-n {
        font-size: 0.88rem;
    }

    .cd-desc {
        font-size: 0.74rem;
    }

    .btn-app {
        font-size: 0.78rem;
        padding: 7px 16px;
    }

    .rp-grid {
        gap: 10px;
    }

    .rp {
        padding: 10px;
    }

    .rp-tt2 {
        font-size: 0.78rem;
    }

    .rp-sum {
        font-size: 0.7rem;
        -webkit-line-clamp: 1;
    }

    /* 服务与承诺模块 - 平板端 2列 */
    .svc-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 手机端 ( < 768px ) */
@media (max-width: 767.98px) {
    body {
        padding-bottom: 64px; /* 底部固定导航高度 */
    }

    .main {
        padding-top: 10px;
        padding-bottom: 20px;
    }

    /* 导航栏 */
    .s-tt {
        font-size: 1.1rem;
    }

    .bd-ico {
        width: 80px;
        height: 40px;
    }

    /* Banner */
    .bn-sec {
        margin-bottom: 16px !important;
    }

    /* TAB 导航 */
    .tab-nav {
        padding: 0 10px;
    }

    .tab-nav .nav-link {
        font-size: 0.8rem;
        padding: 10px 12px;
    }

    /* 文章列表 */
    .tab-pn {
        padding: 12px;
    }

    .art {
        padding: 10px;
    }

    .art-bd {
        padding-left: 10px !important;
    }

    .art-tt {
        font-size: 0.85rem;
        -webkit-line-clamp: 2;
    }

    .art-sum {
        font-size: 0.75rem;
        -webkit-line-clamp: 2;
        margin-bottom: 6px;
    }

    .art-meta {
        font-size: 0.7rem;
        gap: 10px;
    }

    .art-img img {
        aspect-ratio: 4/3;
    }

    /* 栏目页面 */
    .bc-nav {
        margin-bottom: 2px;
    }

    .bc-nav .breadcrumb {
        font-size: 0.75rem;
    }

    .category-header {
        padding: 16px 14px 12px;
        margin-bottom: 14px;
    }

    .category-title {
        font-size: 1.15rem;
        margin-bottom: 8px;
        padding-bottom: 10px;
    }

    .category-title::after {
        width: 40px;
        height: 2px;
    }

    .category-description {
        font-size: 0.78rem;
        line-height: 1.6;
    }

    /* 标签集合页 - 手机端 */
    .tags-page-section {
        padding: 14px 12px;
        margin-bottom: 16px;
    }

    .tags-page-cloud {
        gap: 6px;
    }

    .tags-page-cloud a {
        font-size: 0.75rem;
        padding: 4px 10px;
        border-radius: 16px;
    }

    .category-art-loop {
        gap: 10px;
        margin-bottom: 16px;
    }

    .a-tag {
        font-size: 0.65rem;
        padding: 2px 8px;
    }

    .pagination-wrap {
        padding: 14px 10px;
        margin-bottom: 16px;
    }

    .pagination-wrap .page-link {
        font-size: 0.78rem;
        padding: 6px 10px;
        min-width: 34px;
    }

    .pagination-wrap .page-ellipsis {
        font-size: 0.78rem;
        padding: 6px 8px;
        min-width: 34px;
    }

    /* 推荐流量卡模块 - 手机端 */
    .rec-sec {
        padding: 6px 8px;
        margin-bottom: 16px;
        gap: 4px;
    }

    .rec-item {
        padding: 6px 8px;
        gap: 8px;
    }

    .cd-ico {
        width: 44px;
        height: 44px;
    }

    .cd-n {
        font-size: 0.82rem;
    }

    .cd-bg {
        font-size: 0.65rem;
        padding: 1px 5px;
    }

    .cd-desc {
        font-size: 0.7rem;
    }

    .btn-app {
        font-size: 0.72rem;
        padding: 5px 12px;
    }

    /* 文章详情页 */
    .ad {
        padding: 16px 12px;
        margin-bottom: 16px;
    }

    .ad-tt {
        font-size: 1.15rem;
        margin-bottom: 10px;
    }

    .ad-meta {
        font-size: 0.74rem;
        gap: 10px;
    }

    .ad-bd {
        font-size: 0.85rem;
        line-height: 1.8;
    }

    .ad-bd h2 {
        font-size: 1.05rem;
        margin: 24px 0 12px;
        padding: 10px 12px;
        border-left-width: 3px;
    }

    .ad-bd h3 {
        font-size: 0.92rem;
        margin: 18px 0 10px;
        padding-left: 10px;
        border-left-width: 2px;
    }

    .ad-bd h4 {
        font-size: 0.85rem;
    }

    .ad-ntc {
        flex-direction: column;
        gap: 8px;
        padding: 12px 14px;
    }

    .ntc-bd p {
        font-size: 0.76rem;
    }

    .ad-tags {
        gap: 6px;
        padding-top: 14px;
        margin-bottom: 18px;
    }

    .tag-lb {
        font-size: 0.78rem;
    }

    .ad-tags .a-tag {
        font-size: 0.68rem;
        padding: 2px 8px;
    }

    .cmt-sec {
        padding-top: 18px;
        margin-bottom: 18px;
    }

    .cmt-tt {
        font-size: 1rem;
        margin-bottom: 14px;
    }

    .btn-cmt {
        font-size: 0.82rem;
        padding: 8px 22px;
        width: 100%;
        justify-content: center;
    }

    /* 评论列表 - 手机端 */
    .cmts-sec {
        padding-top: 18px;
        margin-bottom: 18px;
    }

    .cmts-tt {
        font-size: 1rem;
        margin-bottom: 14px;
    }

    .cmt {
        gap: 10px;
        padding: 12px 0;
    }

    .cmt-av img {
        width: 36px;
        height: 36px;
    }

    .cmt-au {
        font-size: 0.82rem;
    }

    .cmt-tm {
        font-size: 0.7rem;
    }

    .cmt-ct p {
        font-size: 0.82rem;
    }

    .pn-item {
        padding: 12px 14px;
    }

    .pn-tt {
        font-size: 0.8rem;
    }

    .rp-sec {
        padding-top: 18px;
    }

    .rp-tt {
        font-size: 1rem;
        margin-bottom: 14px;
    }

    .rp-grid {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .rp {
        padding: 10px;
    }

    .rp-tt2 {
        font-size: 0.78rem;
    }

    .rp-sum {
        -webkit-line-clamp: 1;
    }

    /* 服务与承诺模块 - 手机端 1列 */
    .svc-sec {
        padding: 24px 16px;
        margin-top: 16px;
        margin-bottom: 16px;
    }

    .svc-tt {
        font-size: 1.2rem;
    }

    .svc-sub {
        font-size: 0.8rem;
    }

    .svc-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .svc {
        padding: 16px 10px;
    }

    .svc-ico {
        width: 48px;
        height: 48px;
        font-size: 1.4rem;
    }

    .svc-tt2 {
        font-size: 0.85rem;
    }

    .svc-desc {
        font-size: 0.72rem;
    }

    /* 侧边栏 */
    .sb-w {
        padding: 16px;
        margin-bottom: 14px;
    }

    .lp-img {
        width: 64px;
        height: 64px;
    }

    .lp-bd {
        height: 64px;
    }

    .lp-tt {
        font-size: 0.78rem;
    }

    /* 标签云手机端每行3个 */
    .tag-cd {
        grid-template-columns: repeat(3, 1fr);
        gap: 6px;
    }

    .tag-i {
        font-size: 0.7rem;
        padding: 5px 2px;
    }

    /* Footer */
    .ft {
        padding: 24px 0 0;
        margin-top: 10px;
        margin-bottom: 56px;
    }

    .ft-w {
        margin-bottom: 16px;
    }

    .ft-tt {
        font-size: 0.95rem;
    }

    .ft-abt,
    .ft-ct li,
    .ft-lks a {
        font-size: 0.78rem;
    }

    .ft-btm {
        padding: 14px 0;
    }
}

/* 极小屏 ( < 400px ) */
@media (max-width: 399.98px) {
    .tab-nav .nav-link {
        font-size: 0.72rem;
        padding: 8px 10px;
    }

    .art-tt {
        font-size: 0.78rem;
    }

    .art-sum {
        font-size: 0.7rem;
        -webkit-line-clamp: 1;
    }

    .art-meta {
        font-size: 0.65rem;
    }

    .tag-cd {
        grid-template-columns: repeat(3, 1fr);
        gap: 4px;
    }

    .tag-i {
        font-size: 0.65rem;
        padding: 4px 2px;
    }
}

/* 大屏优化 ( >= 1200px ) */
@media (min-width: 1200px) {
    .main .container {
        max-width: 1200px;
    }

}

/* ---------- 工具类（替代行内样式） ---------- */
.pg-sub {
    max-width: 700px;
}

.ico-lg {
    font-size: 2.2rem;
}

.ico-md {
    font-size: 1.8rem;
}

.tl-date {
    min-width: 70px;
}

/* --- 卡片组件（合并 Bootstrap 工具类，缩短 class 属性） --- */
.feature-card {
    text-align: center;
    padding: 1.5rem;
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.ct-card {
    text-align: center;
    padding: 1.5rem;
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    height: 100%;
}

.faq-item {
    padding: 1.5rem;
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.bdr-box {
    padding: 1.5rem;
    border-radius: var(--radius-md);
    border: 2px solid;
}

/* ---------- 网格系统速记 ---------- */
.row-g {
    --gx: 1.5rem;
    --gy: 0;
    display: flex;
    flex-wrap: wrap;
    margin-top: calc(-1 * var(--gy));
    margin-right: calc(-.5 * var(--gx));
    margin-left: calc(-.5 * var(--gx));
}
.row-g > * {
    flex-shrink: 0;
    width: 100%;
    max-width: 100%;
    padding-right: calc(var(--gx) * .5);
    padding-left: calc(var(--gx) * .5);
    margin-top: var(--gy);
}
.g0 { --gx: 0; --gy: 0; }
.g-3 { --gy: 1rem; }
.g-4 { --gy: 1.5rem; }
.c4 { flex: 0 0 auto; width: 33.33333333%; }
.c6 { flex: 0 0 auto; width: 50%; }
.c8 { flex: 0 0 auto; width: 66.66666667%; }
@media (min-width: 768px) {
    .md3 { flex: 0 0 auto; width: 25%; }
    .md4 { flex: 0 0 auto; width: 33.33333333%; }
    .md5 { flex: 0 0 auto; width: 41.66666667%; }
    .md6 { flex: 0 0 auto; width: 50%; }
    .md9 { flex: 0 0 auto; width: 75%; }
}
@media (min-width: 992px) {
    .lg3 { flex: 0 0 auto; width: 25%; }
    .lg4 { flex: 0 0 auto; width: 33.33333333%; }
    .lg6 { flex: 0 0 auto; width: 50%; }
    .lg8 { flex: 0 0 auto; width: 66.66666667%; }
}

/* ---------- 布局速记 ---------- */
.fx { display: flex; }
.fxc { display: flex; align-items: center; }
.fxas { display: flex; align-items: flex-start; }
.tdu { text-decoration: none; }

/* --- 文章标签 --- */
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.article-tag {
    display: inline-block;
    font-size: 0.75rem;
    color: var(--primary-color);
    background: rgba(26, 115, 232, 0.08);
    padding: 2px 10px;
    border-radius: 20px;
    text-decoration: none;
    transition: var(--transition);
}

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

/* --- FAQ 图标速记 --- */
.faq-ico {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

/* 桌面浮动图标响应式显示 */
.d-float {
    position: fixed;
    right: 12px;
    bottom: 120px;
    flex-direction: column;
    gap: 6px;
    z-index: 1020;
    display: none;
}

/* --- 图片灯箱 --- */
.img-lb {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease;
}

.img-lb.show {
    opacity: 1;
    visibility: visible;
}

.img-lb img {
    max-width: 90vw;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 4px;
    cursor: default;
}

.img-lb-close {
    position: absolute;
    top: 16px;
    right: 28px;
    color: #fff;
    font-size: 2.2rem;
    line-height: 1;
    cursor: pointer;
    z-index: 1;
    transition: opacity 0.2s;
}

.img-lb-close:hover {
    opacity: 0.7;
}
@media (min-width: 768px) {
    .d-float {
        display: flex;
    }
}