/* ============================================
   侦探官网主题 · 深墨绿 + 琥珀金
   单文件样式 · 响应式
   ============================================ */
:root {
    --c-primary: #1a3d36;
    --c-primary-dark: #0f2622;
    --c-accent: #c9a227;
    --c-accent-hover: #b08e1e;
    --c-text: #1e2a28;
    --c-text-muted: #5c6b67;
    --c-bg: #f0f2f1;
    --c-surface: #ffffff;
    --c-border: #d8e0dd;
    --c-border-light: #e8eeec;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow: 0 2px 16px rgba(26, 61, 54, 0.08);
    --header-h: 68px;
    --max-w: 1140px;
    --gap: 24px;
}

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", "微软雅黑", sans-serif;
    font-size: 15px;
    line-height: 1.7;
    color: var(--c-text);
    background: var(--c-bg);
    overflow-x: hidden;
}

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

a {
    color: var(--c-primary);
    transition: color 0.2s, background 0.2s, border-color 0.2s;
}

ul, ol {
    list-style: none;
}

.container,
.z1fdb5container {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* ---------- 头部导航 ---------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--c-surface);
    border-bottom: 1px solid var(--c-border);
    height: var(--header-h);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-h);
    gap: 16px;
}

.logo h1 {
    font-size: 20px;
    font-weight: 700;
    margin: 0;
    line-height: 1.3;
}

.logo h1 a {
    color: var(--c-primary);
    text-decoration: none;
}

.logo h1 a:hover {
    color: var(--c-accent-hover);
}

.main-nav ul.z1fdb5nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 4px 20px;
    list-style: none;
}

.main-nav ul li a {
    text-decoration: none;
    color: var(--c-text);
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    padding: 6px 0;
}

.main-nav ul li a:hover,
.main-nav ul li.z1fdb5this a {
    color: var(--c-accent-hover);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--c-primary);
    margin: 5px 0;
    transition: transform 0.3s, opacity 0.3s;
}

.mobile-menu-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 38, 34, 0.5);
    z-index: 998;
}

.mobile-menu-overlay.active {
    display: block;
}

/* ---------- 按钮 ---------- */
.z1fdb5btn {
    display: inline-block;
    padding: 12px 28px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius);
    border: 2px solid transparent;
    cursor: pointer;
    text-align: center;
    line-height: 1.4;
}

.z1fdb5btn-primary {
    background: var(--c-accent);
    color: var(--c-primary-dark);
    border-color: var(--c-accent);
}

.z1fdb5btn-primary:hover {
    background: var(--c-accent-hover);
    border-color: var(--c-accent-hover);
    color: var(--c-primary-dark);
}

.z1fdb5btn-outline {
    background: transparent;
    color: var(--c-surface);
    border-color: rgba(255, 255, 255, 0.6);
}

.z1fdb5btn-outline:hover {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
}

.z1fdb5contact .z1fdb5btn-outline {
    color: var(--c-primary);
    border-color: var(--c-primary);
}

.z1fdb5contact .z1fdb5btn-outline:hover {
    background: var(--c-primary);
    color: #fff;
}

/* ---------- 版块标题 ---------- */
.z1fdb5section-head {
    margin-bottom: 36px;
}

.z1fdb5section-head--center {
    text-align: center;
}

.z1fdb5section-head h2 {
    font-size: 28px;
    color: var(--c-primary);
    font-weight: 700;
    margin: 8px 0 10px;
    line-height: 1.35;
}

.z1fdb5section-head p {
    color: var(--c-text-muted);
    font-size: 15px;
    max-width: 560px;
    margin: 0 auto;
}

.z1fdb5section-head:not(.z1fdb5section-head--center) p {
    margin: 0;
}

.z1fdb5label {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--c-accent-hover);
    background: rgba(201, 162, 39, 0.15);
    padding: 4px 12px;
    border-radius: 4px;
}

/* ---------- 首页 Hero ---------- */
.z1fdb5home {
    padding-top: var(--header-h);
}

.z1fdb5hero {
    background: linear-gradient(145deg, var(--c-primary-dark) 0%, var(--c-primary) 55%, #2a5249 100%);
    color: #fff;
    padding: 56px 0 0;
}

.z1fdb5hero-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 40px;
    align-items: center;
    padding-bottom: 48px;
}

.z1fdb5hero-tag {
    display: inline-block;
    font-size: 13px;
    color: var(--c-accent);
    margin-bottom: 14px;
    letter-spacing: 0.04em;
}

.z1fdb5hero-text h2 {
    font-size: 34px;
    line-height: 1.3;
    margin-bottom: 18px;
    font-weight: 700;
}

.z1fdb5hero-lead {
    font-size: 16px;
    opacity: 0.92;
    margin-bottom: 14px;
}

.z1fdb5hero-text p {
    font-size: 15px;
    opacity: 0.85;
    margin-bottom: 24px;
    line-height: 1.75;
}

.z1fdb5hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.z1fdb5hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.z1fdb5hero-img {
    border-radius: var(--radius-lg);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
    width: 100%;
    max-width: 480px;
}

.z1fdb5hero-stats {
    background: rgba(0, 0, 0, 0.15);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.z1fdb5stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    padding: 24px 20px;
}

.z1fdb5stat {
    text-align: center;
    padding: 12px 8px;
}

.z1fdb5stat strong {
    display: block;
    font-size: 22px;
    color: var(--c-accent);
    margin-bottom: 4px;
}

.z1fdb5stat span {
    font-size: 13px;
    opacity: 0.85;
}

/* ---------- 简介 ---------- */
.z1fdb5intro {
    padding: 64px 0;
    background: var(--c-surface);
    border-bottom: 1px solid var(--c-border-light);
}

.z1fdb5intro-cols {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.z1fdb5intro-cols p {
    color: var(--c-text-muted);
    font-size: 15px;
    line-height: 1.8;
}

/* ---------- 业务 ---------- */
.z1fdb5services {
    padding: 64px 0;
}

.z1fdb5svc-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr;
    gap: 20px;
    align-items: stretch;
}

.z1fdb5svc-card {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
}

.z1fdb5svc-card--main {
    border-color: var(--c-primary);
    border-width: 2px;
    background: linear-gradient(180deg, #fff 0%, #f7faf9 100%);
}

.z1fdb5svc-num {
    font-size: 13px;
    font-weight: 700;
    color: var(--c-accent-hover);
    margin-bottom: 12px;
}

.z1fdb5svc-card h3 {
    font-size: 18px;
    color: var(--c-primary);
    margin-bottom: 12px;
    line-height: 1.4;
}

.z1fdb5svc-card p {
    font-size: 14px;
    color: var(--c-text-muted);
    flex: 1;
    line-height: 1.75;
}

.z1fdb5svc-list {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--c-border-light);
}

.z1fdb5svc-list li {
    font-size: 14px;
    color: var(--c-text);
    padding: 6px 0 6px 18px;
    position: relative;
}

.z1fdb5svc-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 14px;
    width: 6px;
    height: 6px;
    background: var(--c-accent);
    border-radius: 50%;
}

/* ---------- 优势 ---------- */
.z1fdb5advantages {
    padding: 64px 0;
    background: var(--c-surface);
}

.z1fdb5adv-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.z1fdb5adv-item {
    padding: 24px 28px;
    border-left: 4px solid var(--c-accent);
    background: var(--c-bg);
    border-radius: 0 var(--radius) var(--radius) 0;
    border-top: 1px solid var(--c-border-light);
    border-right: 1px solid var(--c-border-light);
    border-bottom: 1px solid var(--c-border-light);
}

.z1fdb5adv-item h3 {
    font-size: 17px;
    color: var(--c-primary);
    margin-bottom: 10px;
}

.z1fdb5adv-item p {
    font-size: 14px;
    color: var(--c-text-muted);
    line-height: 1.75;
}

/* ---------- 行业知识 ---------- */
.z1fdb5knowledge {
    padding: 64px 0;
}

.z1fdb5know-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.z1fdb5know-card {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow);
}

.z1fdb5know-card h3 {
    font-size: 16px;
    color: var(--c-primary);
    margin-bottom: 12px;
    line-height: 1.4;
}

.z1fdb5know-card p {
    font-size: 14px;
    color: var(--c-text-muted);
    line-height: 1.75;
}

/* ---------- 流程 + FAQ ---------- */
.z1fdb5process {
    padding: 64px 0;
    background: var(--c-surface);
    border-top: 1px solid var(--c-border-light);
}

.z1fdb5flow {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 48px;
}

.z1fdb5flow-step {
    text-align: center;
    padding: 24px 16px;
    background: var(--c-bg);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
}

.z1fdb5flow-n {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--c-primary);
    color: var(--c-accent);
    font-weight: 700;
    font-size: 18px;
    border-radius: 50%;
    margin-bottom: 14px;
}

.z1fdb5flow-step h3 {
    font-size: 16px;
    color: var(--c-primary);
    margin-bottom: 8px;
}

.z1fdb5flow-step p {
    font-size: 13px;
    color: var(--c-text-muted);
    line-height: 1.65;
}

.z1fdb5faq {
    max-width: 800px;
    margin: 0 auto;
    padding: 28px 32px;
    background: var(--c-bg);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
}

.z1fdb5faq-title {
    font-size: 18px;
    color: var(--c-primary);
    margin-bottom: 20px;
    text-align: center;
}

.z1fdb5faq-list dt {
    font-weight: 600;
    color: var(--c-primary);
    font-size: 15px;
    padding: 14px 0 8px;
    border-top: 1px solid var(--c-border-light);
}

.z1fdb5faq-list dt:first-child {
    border-top: none;
    padding-top: 0;
}

.z1fdb5faq-list dd {
    font-size: 14px;
    color: var(--c-text-muted);
    padding-bottom: 14px;
    line-height: 1.75;
    margin: 0;
}

/* ---------- 首页资讯 ---------- */
.z1fdb5articles-home {
    padding: 64px 0;
}

.z1fdb5articles-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
}

.z1fdb5article-card {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: box-shadow 0.25s, transform 0.25s;
}

.z1fdb5article-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-3px);
}

.z1fdb5article-thumb {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: var(--c-bg);
}

.z1fdb5article-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.z1fdb5article-card-body {
    padding: 12px 14px 14px;
}

.z1fdb5article-card-title {
    font-size: 13px;
    font-weight: 600;
    margin: 0 0 6px;
    line-height: 1.45;
}

.z1fdb5article-card-title a {
    color: var(--c-text);
    text-decoration: none;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.z1fdb5article-card-title a:hover {
    color: var(--c-accent-hover);
}

.z1fdb5article-card-meta {
    font-size: 12px;
    color: var(--c-text-muted);
}

.z1fdb5articles-more {
    text-align: center;
    margin-top: 32px;
}

.z1fdb5articles-more .z1fdb5btn-outline {
    color: var(--c-primary);
    border-color: var(--c-primary);
}

/* ---------- 联系 ---------- */
.z1fdb5contact {
    padding: 64px 0 72px;
    background: linear-gradient(180deg, var(--c-bg) 0%, #e4eae8 100%);
}

.z1fdb5contact-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr;
    gap: 20px;
    align-items: stretch;
}

.z1fdb5contact-box {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    text-align: center;
}

.z1fdb5contact-box h3 {
    font-size: 16px;
    color: var(--c-primary);
    margin-bottom: 12px;
}

.z1fdb5contact-box p {
    font-size: 14px;
    color: var(--c-text-muted);
    margin-bottom: 8px;
}

.z1fdb5contact-box--hot {
    border-color: var(--c-accent);
    border-width: 2px;
}

.z1fdb5phone {
    font-size: 26px;
    font-weight: 700;
    color: var(--c-primary);
    margin: 8px 0 12px !important;
}

.z1fdb5contact-box .z1fdb5btn {
    margin-top: 16px;
}

/* ---------- 页脚 ---------- */
.footer {
    background: var(--c-primary-dark);
    color: rgba(255, 255, 255, 0.75);
    padding: 36px 0 28px;
    font-size: 13px;
}

.footer .container {
    text-align: center;
}

.footer a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
}

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

.footer-links,
.flink_list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px 20px;
    list-style: none;
    margin-bottom: 16px;
    padding: 0;
}

.flink_title {
    font-size: 13px;
    margin-bottom: 10px;
    opacity: 0.7;
}

.z1fdb5flink {
    margin-bottom: 20px;
}

.footer p {
    margin: 6px 0;
    line-height: 1.6;
}

/* ---------- 子页面通用 ---------- */
.z1fdb5subpage {
    padding-top: var(--header-h);
}

.z1fdb5page-banner {
    background: var(--c-primary);
    color: #fff;
    padding: 36px 0 32px;
}

.z1fdb5page-title {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1.35;
    word-break: break-word;
}

.z1fdb5breadcrumb {
    font-size: 13px;
    opacity: 0.88;
}

.z1fdb5breadcrumb a {
    color: #fff;
    text-decoration: none;
}

.z1fdb5breadcrumb a:hover {
    text-decoration: underline;
}

.z1fdb5breadcrumb-sep {
    margin: 0 8px;
    opacity: 0.6;
}

.z1fdb5page-main {
    padding: 32px 0 48px;
}

.z1fdb5page-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 24px;
    align-items: start;
}

.z1fdb5content-main {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 28px;
    min-width: 0;
    overflow: hidden;
}

/* ---------- 列表页 ---------- */
.z1fdb5list-items {
    list-style: none;
}

.z1fdb5list-item {
    display: flex;
    gap: 20px;
    padding: 22px 0;
    border-bottom: 1px solid var(--c-border-light);
    align-items: flex-start;
}

.z1fdb5list-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.z1fdb5list-item:first-child {
    padding-top: 0;
}

.z1fdb5list-thumb {
    flex: 0 0 200px;
    width: 200px;
    max-width: 40%;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--c-border-light);
}

.z1fdb5list-thumb img {
    width: 100%;
    height: 130px;
    object-fit: cover;
}

.z1fdb5list-body {
    flex: 1;
    min-width: 0;
}

.z1fdb5list-title {
    font-size: 18px;
    margin: 0 0 10px;
    line-height: 1.4;
}

.z1fdb5list-title a {
    color: var(--c-text);
    text-decoration: none;
}

.z1fdb5list-title a:hover {
    color: var(--c-accent-hover);
}

.z1fdb5list-meta {
    font-size: 13px;
    color: var(--c-text-muted);
    margin-bottom: 8px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px 16px;
}

.z1fdb5list-meta a {
    color: var(--c-primary);
}

.z1fdb5list-intro {
    font-size: 14px;
    color: var(--c-text-muted);
    line-height: 1.7;
    margin: 0;
    word-break: break-word;
}

.z1fdb5pagebar {
    margin-top: 28px;
    padding-top: 22px;
    border-top: 1px solid var(--c-border-light);
}

.z1fdb5pages-lr .pagelist {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 8px;
    list-style: none;
    width: 100%;
}

.z1fdb5pages-lr .pagelist li {
    margin: 0;
}

.z1fdb5pages-lr .pagelist a,
.z1fdb5pages-lr .pagelist span {
    display: inline-block;
    padding: 6px 14px;
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    color: var(--c-text);
    text-decoration: none;
    font-size: 14px;
    background: var(--c-surface);
    line-height: 1.4;
}

.z1fdb5pages-lr .pagelist a:hover {
    border-color: var(--c-primary);
    color: var(--c-primary);
}

.z1fdb5pages-lr .pagelist .thisclass a,
.z1fdb5pages-lr .pagelist .thisclass {
    background: var(--c-primary);
    border-color: var(--c-primary);
    color: #fff;
}

/* ---------- 侧栏 ---------- */
.z1fdb5sidebar {
    min-width: 0;
}

.z1fdb5sidebar-block {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 20px;
    overflow: hidden;
}

.z1fdb5sidebar-title {
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--c-accent);
}

.z1fdb5sidebar-title h3 {
    font-size: 16px;
    color: var(--c-primary);
    margin: 0;
}

.z1fdb5sidebar-item {
    border-bottom: 1px solid var(--c-border-light);
}

.z1fdb5sidebar-item:last-child {
    border-bottom: none;
}

.z1fdb5sidebar-link {
    display: flex;
    gap: 10px;
    padding: 10px 0;
    text-decoration: none;
    align-items: flex-start;
}

.z1fdb5sidebar-thumb {
    flex: 0 0 72px;
    width: 72px;
    height: 54px;
    border-radius: 4px;
    overflow: hidden;
    border: 1px solid var(--c-border-light);
}

.z1fdb5sidebar-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.z1fdb5sidebar-info {
    flex: 1;
    min-width: 0;
}

.z1fdb5sidebar-item-title {
    font-size: 13px;
    color: var(--c-text);
    line-height: 1.45;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.z1fdb5sidebar-link:hover .z1fdb5sidebar-item-title {
    color: var(--c-accent-hover);
}

.z1fdb5sidebar-date {
    font-size: 12px;
    color: var(--c-text-muted);
    margin-top: 4px;
    display: block;
}

/* ---------- 内容页 ---------- */
.z1fdb5article-header {
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--c-border-light);
}

.z1fdb5article-title {
    font-size: 24px;
    line-height: 1.4;
    color: var(--c-primary);
    margin: 0 0 14px;
    word-break: break-word;
}

.z1fdb5article-meta {
    font-size: 13px;
    color: var(--c-text-muted);
    display: flex;
    flex-wrap: wrap;
    gap: 12px 20px;
}

.z1fdb5article-meta a {
    color: var(--c-primary);
}

.z1fdb5article-litpic {
    margin-top: 16px;
    text-align: center;
}

.z1fdb5article-litpic img {
    max-width: 100%;
    border-radius: var(--radius);
    border: 1px solid var(--c-border-light);
}

.z1fdb5article-content {
    font-size: 16px;
    line-height: 1.85;
    color: var(--c-text);
    word-break: break-word;
    overflow-wrap: break-word;
}

.z1fdb5article-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
    margin: 12px 0;
}

.z1fdb5article-content table {
    max-width: 100%;
    overflow-x: auto;
    display: block;
}

.z1fdb5article-gallery-item {
    margin: 20px 0;
    text-align: center;
}

.z1fdb5article-gallery-item img {
    max-width: 100%;
    border-radius: var(--radius);
    border: 1px solid var(--c-border-light);
}

.z1fdb5article-gallery-item figcaption {
    font-size: 14px;
    color: var(--c-text-muted);
    margin-top: 8px;
}

.z1fdb5diyfield {
    margin: 20px 0;
    padding: 16px;
    background: var(--c-bg);
    border: 1px solid var(--c-border-light);
    border-radius: var(--radius);
    overflow: hidden;
}

.z1fdb5meta-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 24px 0 0;
    padding: 0;
    list-style: none;
}

.z1fdb5tagitem a {
    display: inline-block;
    padding: 5px 12px;
    background: rgba(26, 61, 54, 0.08);
    color: var(--c-primary);
    border-radius: 20px;
    font-size: 13px;
    text-decoration: none;
}

.z1fdb5tagitem a:hover {
    background: var(--c-primary);
    color: #fff;
}

.z1fdb5meta-tags .clear {
    display: none;
}

.z1fdb5article-prenext {
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px solid var(--c-border-light);
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 16px;
}

.z1fdb5prenext-pre,
.z1fdb5prenext-next {
    flex: 1;
    min-width: 200px;
    font-size: 14px;
    color: var(--c-text-muted);
    line-height: 1.7;
}

.z1fdb5prenext-pre a,
.z1fdb5prenext-next a {
    color: var(--c-primary);
    text-decoration: none;
}

.z1fdb5prenext-pre a:hover,
.z1fdb5prenext-next a:hover {
    color: var(--c-accent-hover);
}

.z1fdb5related {
    margin-top: 28px;
    padding-top: 24px;
    border-top: 2px solid var(--c-border-light);
}

.z1fdb5related-title {
    font-size: 18px;
    color: var(--c-primary);
    margin-bottom: 18px;
}

.z1fdb5related-item {
    display: flex;
    gap: 14px;
    padding: 14px 0;
    border-bottom: 1px solid var(--c-border-light);
    align-items: flex-start;
}

.z1fdb5related-item:last-child {
    border-bottom: none;
}

.z1fdb5related-thumb {
    flex: 0 0 100px;
    width: 100px;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--c-border-light);
}

.z1fdb5related-thumb img {
    width: 100%;
    height: 68px;
    object-fit: cover;
}

.z1fdb5related-body {
    flex: 1;
    min-width: 0;
}

.z1fdb5related-body h3 {
    font-size: 15px;
    margin: 0 0 6px;
    line-height: 1.4;
}

.z1fdb5related-body h3 a {
    color: var(--c-text);
    text-decoration: none;
}

.z1fdb5related-body h3 a:hover {
    color: var(--c-accent-hover);
}

.z1fdb5related-body p {
    font-size: 13px;
    color: var(--c-text-muted);
    margin: 0;
    line-height: 1.6;
}

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1100px) {
    .z1fdb5articles-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .z1fdb5svc-grid {
        grid-template-columns: 1fr 1fr;
    }

    .z1fdb5svc-card--main {
        grid-column: 1 / -1;
    }
}

@media (max-width: 992px) {
    .z1fdb5hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .z1fdb5hero-actions {
        justify-content: center;
    }

    .z1fdb5hero-visual {
        order: -1;
    }

    .z1fdb5hero-img {
        max-width: 360px;
        margin: 0 auto;
    }

    .z1fdb5intro-cols,
    .z1fdb5know-grid,
    .z1fdb5adv-grid {
        grid-template-columns: 1fr;
    }

    .z1fdb5flow {
        grid-template-columns: repeat(2, 1fr);
    }

    .z1fdb5contact-grid {
        grid-template-columns: 1fr;
    }

    .z1fdb5page-layout {
        grid-template-columns: 1fr;
    }

    .z1fdb5articles-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .main-nav ul.z1fdb5nav {
        gap: 4px 14px;
    }
}

@media (max-width: 768px) {
    :root {
        --header-h: 60px;
    }

    .mobile-menu-btn {
        display: block;
    }

    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: min(300px, 85vw);
        height: 100vh;
        background: var(--c-surface);
        padding: calc(var(--header-h) + 16px) 20px 24px;
        transition: right 0.3s ease;
        box-shadow: -4px 0 20px rgba(0, 0, 0, 0.12);
        overflow-y: auto;
        z-index: 999;
    }

    .main-nav.active {
        right: 0;
    }

    .main-nav ul.z1fdb5nav {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }

    .main-nav ul li {
        margin: 0;
        border-bottom: 1px solid var(--c-border-light);
    }

    .main-nav ul li a {
        display: block;
        padding: 14px 0;
        font-size: 16px;
    }

    .z1fdb5hero {
        padding-top: 40px;
    }

    .z1fdb5hero-text h2 {
        font-size: 26px;
    }

    .z1fdb5stats-row {
        grid-template-columns: repeat(2, 1fr);
    }

    .z1fdb5section-head h2 {
        font-size: 24px;
    }

    .z1fdb5svc-grid {
        grid-template-columns: 1fr;
    }

    .z1fdb5flow {
        grid-template-columns: 1fr;
    }

    .z1fdb5articles-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .z1fdb5faq {
        padding: 20px 18px;
    }

    .z1fdb5content-main {
        padding: 20px 16px;
    }

    .z1fdb5list-item {
        flex-direction: column;
    }

    .z1fdb5list-thumb {
        flex: none;
        width: 100%;
        max-width: 100%;
    }

    .z1fdb5list-thumb img {
        height: auto;
        min-height: 160px;
        max-height: 220px;
    }

    .z1fdb5article-title {
        font-size: 20px;
    }

    .z1fdb5page-title {
        font-size: 22px;
    }

    .z1fdb5prenext-pre,
    .z1fdb5prenext-next {
        min-width: 100%;
    }

    .z1fdb5related-item {
        flex-direction: column;
    }

    .z1fdb5related-thumb {
        width: 100%;
    }

    .z1fdb5related-thumb img {
        height: auto;
        min-height: 140px;
    }
}

@media (max-width: 480px) {
    .z1fdb5container,
    .container {
        padding: 0 16px;
    }

    .z1fdb5articles-grid {
        grid-template-columns: 1fr;
    }

    .z1fdb5hero-text h2 {
        font-size: 22px;
    }

    .z1fdb5btn {
        width: 100%;
        max-width: 280px;
    }

    .z1fdb5hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .z1fdb5phone {
        font-size: 22px;
    }

    .z1fdb5sidebar-thumb {
        flex: 0 0 64px;
        width: 64px;
        height: 48px;
    }
}