/* ============================================
   私家侦探官网 · 全新主题样式（单文件）
   主色 #0F2847 · 点缀 #B87333
   ============================================ */
:root {
    --c-primary: #0F2847;
    --c-primary-light: #1A3D5C;
    --c-accent: #B87333;
    --c-accent-hover: #9A6028;
    --c-accent-soft: rgba(184, 115, 51, 0.12);
    --c-bg: #F5F7FA;
    --c-surface: #FFFFFF;
    --c-border: #D5DCE3;
    --c-text: #1A2B3C;
    --c-text-muted: #5A6B7D;
    --c-dark: #0A1E33;
    --radius: 10px;
    --radius-lg: 14px;
    --shadow: 0 4px 20px rgba(15, 40, 71, 0.08);
    --header-h: 68px;
    --container: 1180px;
    --gap: 24px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-h) + 12px);
}

body {
    font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, 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-accent);
    transition: color 0.2s ease;
}

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

.z6c4dfcontainer,
.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* ---------- 顶栏导航 ---------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--c-surface);
    border-bottom: 2px solid var(--c-accent);
    box-shadow: 0 1px 0 var(--c-border);
}

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

.logo {
    font-size: 18px;
    font-weight: 700;
    color: var(--c-primary);
    flex-shrink: 0;
    max-width: 42%;
    line-height: 1.3;
}

.logo a {
    color: inherit;
    text-decoration: none;
}

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

.main-nav ul {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    list-style: none;
    gap: 4px 18px;
}

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

.main-nav a:hover,
.main-nav .z6c4dfthis > a,
.main-nav li.z6c4dfthis a {
    color: var(--c-accent);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 26px;
    height: 18px;
    cursor: pointer;
    flex-shrink: 0;
}

.menu-toggle span {
    display: block;
    height: 2px;
    background: var(--c-primary);
    border-radius: 1px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-overlay {
    display: none;
}

/* ---------- 按钮 ---------- */
.z6c4dfbtn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    border: 2px solid transparent;
    transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
    cursor: pointer;
}

.z6c4dfbtn-primary {
    background: var(--c-accent);
    color: #fff !important;
    border-color: var(--c-accent);
}

.z6c4dfbtn-primary:hover {
    background: var(--c-accent-hover);
    border-color: var(--c-accent-hover);
    color: #fff !important;
}

.z6c4dfbtn-outline {
    background: transparent;
    color: #fff !important;
    border-color: rgba(255, 255, 255, 0.6);
}

.z6c4dfbtn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff !important;
}

/* ---------- 首页：首屏 ---------- */
.z6c4dfhome {
    padding-top: var(--header-h);
}

.z6c4dfband-hero {
    background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-light) 55%, #234A6B 100%);
    color: #fff;
    padding: 56px 0 48px;
    position: relative;
    overflow: hidden;
}

.z6c4dfband-hero::after {
    content: "";
    position: absolute;
    right: -80px;
    top: -80px;
    width: 320px;
    height: 320px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    pointer-events: none;
}

.z6c4dfband-hero-inner {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 40px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.z6c4dfeyebrow {
    font-size: 13px;
    letter-spacing: 0.08em;
    color: var(--c-accent-light, #D4A574);
    margin-bottom: 12px;
    text-transform: uppercase;
}

.z6c4dfband-hero-text h2 {
    font-size: clamp(26px, 4vw, 36px);
    line-height: 1.35;
    margin-bottom: 16px;
    font-weight: 700;
}

.z6c4dflead {
    font-size: 15px;
    opacity: 0.92;
    margin-bottom: 10px;
    max-width: 560px;
}

.z6c4dflead-sub {
    font-size: 14px;
    opacity: 0.82;
    margin-bottom: 24px;
    max-width: 580px;
    line-height: 1.75;
}

.z6c4dfband-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 28px;
}

.z6c4dfband-stats {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 28px;
}

.z6c4dfband-stats li {
    text-align: left;
}

.z6c4dfband-stats strong {
    display: block;
    font-size: 22px;
    color: #D4A574;
    line-height: 1.2;
}

.z6c4dfband-stats span {
    font-size: 12px;
    opacity: 0.85;
}

.z6c4dfband-hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.z6c4dfband-img {
    max-height: 360px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 16px 32px rgba(0, 0, 0, 0.25));
}

/* 信任条 */
.z6c4dftrust-strip {
    background: var(--c-surface);
    border-bottom: 1px solid var(--c-border);
    padding: 14px 0;
}

.z6c4dftrust-inner {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px 28px;
}

.z6c4dftrust-inner span {
    font-size: 13px;
    color: var(--c-text-muted);
    padding: 4px 14px;
    border: 1px solid var(--c-border);
    border-radius: 20px;
    background: var(--c-bg);
}

/* ---------- 通用区块 ---------- */
.z6c4dfsection {
    padding: 64px 0;
}

.z6c4dfsection-alt {
    background: var(--c-surface);
}

.z6c4dfsection-dark {
    background: var(--c-primary);
    color: #fff;
}

.z6c4dfsection-contact {
    background: linear-gradient(180deg, var(--c-primary-light) 0%, var(--c-primary) 100%);
    color: #fff;
}

.z6c4dfsection-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 40px;
}

.z6c4dfsection-head-light .z6c4dfsection-title,
.z6c4dfsection-head-light .z6c4dfsection-desc {
    color: #fff;
}

.z6c4dfsection-label {
    display: block;
    font-size: 11px;
    letter-spacing: 0.2em;
    color: var(--c-accent);
    margin-bottom: 8px;
    font-weight: 600;
}

.z6c4dfsection-head-light .z6c4dfsection-label {
    color: #D4A574;
}

.z6c4dfsection-title {
    font-size: clamp(22px, 3vw, 28px);
    color: var(--c-primary);
    margin-bottom: 12px;
    font-weight: 700;
    line-height: 1.35;
}

.z6c4dfsection-desc {
    font-size: 15px;
    color: var(--c-text-muted);
    line-height: 1.75;
}

.z6c4dfsection-head-light .z6c4dfsection-desc {
    opacity: 0.9;
}

/* Bento 业务 */
.z6c4dfbento {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--gap);
}

.z6c4dfbento-item {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 24px 26px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.z6c4dfbento-large {
    grid-column: 1 / -1;
}

.z6c4dfbento-wide {
    grid-column: 1 / -1;
}

.z6c4dfbento-num {
    font-size: 12px;
    font-weight: 700;
    color: var(--c-accent);
    margin-bottom: 10px;
    letter-spacing: 0.1em;
}

.z6c4dfbento-item h3 {
    font-size: 18px;
    color: var(--c-primary);
    margin-bottom: 10px;
    line-height: 1.4;
}

.z6c4dfbento-item p {
    font-size: 14px;
    color: var(--c-text-muted);
    line-height: 1.75;
}

.z6c4dfbento-item ul {
    margin-top: 12px;
    padding-left: 18px;
    font-size: 14px;
    color: var(--c-text-muted);
}

.z6c4dfbento-item li {
    margin-bottom: 6px;
}

/* 实力四栏 */
.z6c4dfpillars {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--gap);
}

.z6c4dfpillar {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    padding: 22px 20px;
    text-align: center;
}

.z6c4dfpillar-icon {
    color: var(--c-accent);
    font-size: 14px;
    margin-bottom: 12px;
}

.z6c4dfpillar h3 {
    font-size: 16px;
    color: var(--c-primary);
    margin-bottom: 8px;
}

.z6c4dfpillar p {
    font-size: 13px;
    color: var(--c-text-muted);
    line-height: 1.65;
}

/* 优势指标 */
.z6c4dfmetrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--gap);
}

.z6c4dfmetric {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    text-align: center;
}

.z6c4dfmetric-val {
    display: block;
    font-size: 28px;
    font-weight: 700;
    color: #D4A574;
    margin-bottom: 4px;
}

.z6c4dfmetric-label {
    display: block;
    font-size: 14px;
    margin-bottom: 12px;
    opacity: 0.9;
}

.z6c4dfmetric p {
    font-size: 13px;
    opacity: 0.82;
    line-height: 1.65;
}

/* 知识 */
.z6c4dfknowledge-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--gap);
}

.z6c4dfknowledge-card {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    padding: 22px 24px;
    border-left: 4px solid var(--c-accent);
}

.z6c4dfknowledge-card h3 {
    font-size: 16px;
    color: var(--c-primary);
    margin-bottom: 10px;
    line-height: 1.45;
}

.z6c4dfknowledge-card p {
    font-size: 14px;
    color: var(--c-text-muted);
    line-height: 1.75;
}

/* 流程时间线 */
.z6c4dftimeline {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    counter-reset: step;
}

.z6c4dftimeline li {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    padding: 20px 16px;
    text-align: center;
    position: relative;
}

.z6c4dftimeline-step {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--c-accent-soft);
    color: var(--c-accent);
    font-weight: 700;
    border-radius: 50%;
    margin-bottom: 12px;
    font-size: 15px;
}

.z6c4dftimeline h3 {
    font-size: 15px;
    color: var(--c-primary);
    margin-bottom: 8px;
}

.z6c4dftimeline p {
    font-size: 13px;
    color: var(--c-text-muted);
    line-height: 1.6;
}

/* FAQ */
.z6c4dffaq-list {
    max-width: 800px;
    margin: 0 auto;
}

.z6c4dffaq-item {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    margin-bottom: 12px;
    overflow: hidden;
}

.z6c4dffaq-item summary {
    padding: 16px 20px;
    font-weight: 600;
    color: var(--c-primary);
    cursor: pointer;
    list-style: none;
    font-size: 15px;
}

.z6c4dffaq-item summary::-webkit-details-marker {
    display: none;
}

.z6c4dffaq-item p {
    padding: 0 20px 16px;
    font-size: 14px;
    color: var(--c-text-muted);
    line-height: 1.75;
}

/* 首页资讯 */
.z6c4dfarticles-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 18px;
}

.z6c4dfarticle-card {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.z6c4dfarticle-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.z6c4dfarticle-card-thumb {
    display: block;
    aspect-ratio: 3 / 2;
    overflow: hidden;
    background: var(--c-bg);
}

.z6c4dfarticle-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.z6c4dfarticle-card-body {
    padding: 12px 12px 14px;
}

.z6c4dfarticle-card-title {
    font-size: 13px;
    margin: 0;
    line-height: 1.45;
    font-weight: 600;
}

.z6c4dfarticle-card-title a {
    color: var(--c-text);
    text-decoration: none;
}

.z6c4dfarticle-card-title a:hover {
    color: var(--c-accent);
}

.z6c4dfarticle-card-meta {
    font-size: 11px;
    color: var(--c-text-muted);
    margin: 6px 0 0;
}

.z6c4dfarticle-card-body .intro,
.z6c4dfarticle-card-body [class*="desc"],
.z6c4dfarticles-grid p:not(.z6c4dfarticle-card-meta) {
    display: none;
}

.z6c4dfarticles-more {
    text-align: center;
    margin-top: 32px;
}

/* 联系 */
.z6c4dfcontact-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}

.z6c4dfcontact-box {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius);
    padding: 22px 18px;
    text-align: center;
}

.z6c4dfcontact-box h3 {
    font-size: 16px;
    margin-bottom: 8px;
    color: #D4A574;
}

.z6c4dfcontact-box p {
    font-size: 13px;
    opacity: 0.88;
    line-height: 1.6;
}

/* ---------- 页脚 ---------- */
.z6c4dffooter {
    background: var(--c-dark);
    color: rgba(255, 255, 255, 0.85);
    padding: 48px 0 28px;
}

.z6c4dffooter-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 40px;
    margin-bottom: 28px;
}

.z6c4dffooter-section h4 {
    font-size: 16px;
    margin-bottom: 14px;
    color: #D4A574;
}

.z6c4dffooter-section p,
.z6c4dffooter-section li {
    font-size: 14px;
    line-height: 1.7;
    opacity: 0.88;
}

.z6c4dffooter-section ul {
    list-style: none;
}

.z6c4dffooter-section a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
}

.z6c4dffooter-section a:hover {
    color: #D4A574;
}

.z6c4dffooter-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 13px;
    opacity: 0.75;
}

.z6c4dffooter-bottom p {
    margin-bottom: 6px;
}

.z6c4dffooter-bottom a {
    color: #D4A574;
}

/* ============================================
   内页（列表 / 内容）
   ============================================ */
.z6c4dfpage-inner {
    padding-top: var(--header-h);
    background: var(--c-bg);
}

.z6c4dfpage-banner {
    background: var(--c-primary);
    color: #fff;
    padding: 32px 0 36px;
}

.z6c4dfbreadcrumb {
    font-size: 13px;
    margin-bottom: 10px;
    opacity: 0.88;
}

.z6c4dfbreadcrumb a {
    color: #D4A574;
    text-decoration: none;
}

.z6c4dfpage-banner-title {
    font-size: clamp(20px, 3vw, 26px);
    font-weight: 700;
    line-height: 1.4;
    word-break: break-word;
}

.z6c4dfpage-banner-desc {
    margin-top: 10px;
    font-size: 14px;
    opacity: 0.88;
    max-width: 680px;
    line-height: 1.7;
}

.z6c4dfmain-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 28px;
    padding: 36px 20px 56px;
    align-items: flex-start;
}

.z6c4dfmain-content {
    flex: 1 1 0;
    min-width: 0;
    width: calc(100% - 300px);
    max-width: calc(100% - 300px);
}

/* 列表 */
.z6c4dflistbox {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.z6c4dflist-items {
    list-style: none;
}

.z6c4dflist-item {
    display: flex;
    gap: 20px;
    padding: 20px 22px;
    border-bottom: 1px solid var(--c-border);
    align-items: flex-start;
}

.z6c4dflist-item:last-child {
    border-bottom: none;
}

.z6c4dflist-thumb {
    flex: 0 0 180px;
    max-width: 180px;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--c-border);
}

.z6c4dflist-thumb img {
    width: 100%;
    height: 135px;
    object-fit: cover;
}

.z6c4dflist-body {
    flex: 1;
    min-width: 0;
}

.z6c4dflist-title {
    font-size: 18px;
    margin: 0 0 8px;
    line-height: 1.4;
}

.z6c4dflist-title a {
    color: var(--c-primary);
    text-decoration: none;
}

.z6c4dflist-title a:hover {
    color: var(--c-accent);
}

.z6c4dflist-meta {
    font-size: 12px;
    color: var(--c-text-muted);
    margin-bottom: 8px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
}

.z6c4dflist-intro {
    font-size: 14px;
    color: var(--c-text-muted);
    line-height: 1.7;
    margin: 0;
    word-break: break-word;
}

/* 分页 */
.z6c4dfpagebar {
    margin-top: 24px;
}

.z6c4dfpages-lr .pagelist {
    list-style: none;
    margin: 0;
    padding: 14px 18px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
}

.z6c4dfpages-lr .pagelist li {
    margin: 0;
}

.z6c4dfpages-lr .pagelist a,
.z6c4dfpages-lr .pagelist span {
    display: inline-block;
    padding: 7px 14px;
    font-size: 13px;
    text-decoration: none;
    color: var(--c-text);
    border: 1px solid var(--c-border);
    border-radius: 6px;
}

.z6c4dfpages-lr .pagelist a:hover {
    background: var(--c-accent);
    border-color: var(--c-accent);
    color: #fff !important;
}

.z6c4dfpages-lr .thisclass,
.z6c4dfpages-lr .current {
    background: var(--c-accent);
    border-color: var(--c-accent);
    color: #fff;
}

/* 内容页 */
.z6c4dfarticle-detail {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 28px 30px;
    margin-bottom: 24px;
    box-shadow: var(--shadow);
    overflow: hidden;
    word-break: break-word;
}

.z6c4dfarticle-title {
    font-size: clamp(20px, 3vw, 26px);
    color: var(--c-primary);
    line-height: 1.45;
    margin-bottom: 14px;
}

.z6c4dfarticle-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 18px;
    font-size: 13px;
    color: var(--c-text-muted);
    padding-bottom: 18px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--c-border);
}

.z6c4dfarticle-meta a {
    color: var(--c-accent);
    text-decoration: none;
}

.z6c4dfarticle-thumb {
    margin-bottom: 20px;
    text-align: center;
}

.z6c4dfarticle-thumb img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    border: 1px solid var(--c-border);
}

.z6c4dfarticle-body {
    font-size: 16px;
    line-height: 1.85;
    color: var(--c-text);
    overflow-wrap: break-word;
}

.z6c4dfarticle-body img {
    max-width: 100% !important;
    height: auto !important;
}

.z6c4dfmeta-tags {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 20px;
    padding-top: 18px;
    border-top: 1px solid var(--c-border);
}

.z6c4dftagitem a {
    display: inline-block;
    padding: 4px 12px;
    background: var(--c-accent-soft);
    color: var(--c-accent);
    border-radius: 16px;
    font-size: 12px;
    text-decoration: none;
}

.z6c4dfarticle-prenext {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 14px;
    margin-top: 24px;
    padding-top: 18px;
    border-top: 1px solid var(--c-border);
    font-size: 14px;
}

.z6c4dfprenext-item {
    flex: 1 1 45%;
    min-width: 0;
    word-break: break-word;
}

.z6c4dfprenext-next {
    text-align: right;
}

.z6c4dfrelated {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 22px 24px;
    box-shadow: var(--shadow);
}

.z6c4dfblock-title {
    font-size: 18px;
    color: var(--c-primary);
    margin-bottom: 18px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--c-accent);
    display: inline-block;
}

.z6c4dfrelated-item {
    display: flex;
    gap: 14px;
    padding: 14px 0;
    border-bottom: 1px solid var(--c-border);
    align-items: flex-start;
}

.z6c4dfrelated-item:last-child {
    border-bottom: none;
}

.z6c4dfrelated-thumb {
    flex: 0 0 110px;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--c-border);
}

.z6c4dfrelated-thumb img {
    width: 110px;
    height: 82px;
    object-fit: cover;
}

.z6c4dfrelated-body {
    flex: 1;
    min-width: 0;
}

.z6c4dfrelated-body h4 {
    font-size: 15px;
    margin: 0 0 6px;
}

.z6c4dfrelated-body h4 a {
    color: var(--c-primary);
    text-decoration: none;
}

.z6c4dfrelated-body p {
    font-size: 13px;
    color: var(--c-text-muted);
    margin: 0;
    line-height: 1.6;
}

.clear {
    clear: both;
    width: 100%;
}

/* 侧栏 */
.z6c4dfsidebar {
    flex: 0 0 272px;
    width: 272px;
    max-width: 100%;
}

.z6c4dfsidebar-block {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.z6c4dfsidebar-title {
    font-size: 15px;
    padding: 14px 16px;
    margin: 0;
    background: var(--c-primary);
    color: #fff;
    font-weight: 600;
}

.z6c4dfsidebar-list {
    list-style: none;
    padding: 10px 12px;
    max-height: none;
}

.z6c4dfsidebar-item {
    display: flex;
    gap: 10px;
    padding: 10px 0;
    border-bottom: 1px solid var(--c-border);
    align-items: flex-start;
}

.z6c4dfsidebar-item:last-child {
    border-bottom: none;
}

.z6c4dfsidebar-thumb {
    flex: 0 0 68px;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--c-border);
}

.z6c4dfsidebar-thumb img {
    width: 68px;
    height: 51px;
    object-fit: cover;
}

.z6c4dfsidebar-info {
    flex: 1;
    min-width: 0;
}

.z6c4dfsidebar-info > a {
    display: block;
    font-size: 13px;
    color: var(--c-text);
    text-decoration: none;
    line-height: 1.45;
    margin-bottom: 4px;
    word-break: break-word;
}

.z6c4dfsidebar-info > a:hover {
    color: var(--c-accent);
}

.z6c4dfsidebar-date {
    font-size: 11px;
    color: var(--c-text-muted);
}

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1100px) {
    .z6c4dfarticles-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .z6c4dfpillars {
        grid-template-columns: repeat(2, 1fr);
    }

    .z6c4dftimeline {
        grid-template-columns: repeat(2, 1fr);
    }

    .z6c4dfcontact-row {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .menu-toggle {
        display: flex;
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: min(320px, 88vw);
        height: 100vh;
        background: var(--c-surface);
        box-shadow: -4px 0 24px rgba(0, 0, 0, 0.12);
        transition: right 0.3s ease;
        z-index: 1001;
        padding: calc(var(--header-h) + 16px) 20px 24px;
        overflow-y: auto;
    }

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

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

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

    .main-nav a {
        display: block;
        padding: 14px 0;
        font-size: 15px;
    }

    .menu-toggle.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

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

    .menu-toggle.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .nav-overlay {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(10, 30, 51, 0.5);
        z-index: 1000;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, visibility 0.3s ease;
    }

    .nav-overlay.active {
        opacity: 1;
        visibility: visible;
    }

    .logo {
        max-width: 55%;
        font-size: 16px;
    }

    .z6c4dfband-hero-inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .z6c4dflead,
    .z6c4dflead-sub {
        max-width: none;
        margin-left: auto;
        margin-right: auto;
    }

    .z6c4dfband-actions,
    .z6c4dfband-stats {
        justify-content: center;
    }

    .z6c4dfbento {
        grid-template-columns: 1fr;
    }

    .z6c4dfbento-large,
    .z6c4dfbento-wide {
        grid-column: auto;
    }

    .z6c4dfknowledge-grid {
        grid-template-columns: 1fr;
    }

    .z6c4dfmetrics {
        grid-template-columns: 1fr;
    }

    .z6c4dfmain-content {
        width: 100%;
        max-width: 100%;
        flex: 1 1 100%;
    }

    .z6c4dfsidebar {
        flex: 1 1 100%;
        width: 100%;
    }
}

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

    .z6c4dfsection {
        padding: 48px 0;
    }

    .z6c4dfband-hero {
        padding: 40px 0 36px;
    }

    .z6c4dfarticles-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
    }

    .z6c4dflist-item {
        flex-direction: column;
        padding: 16px;
    }

    .z6c4dflist-thumb {
        flex: none;
        max-width: 100%;
        width: 100%;
    }

    .z6c4dflist-thumb img {
        width: 100%;
        height: auto;
        max-height: 200px;
    }

    .z6c4dfarticle-detail {
        padding: 20px 16px;
    }

    .z6c4dfprenext-next {
        text-align: left;
    }

    .z6c4dfrelated-item {
        flex-direction: column;
    }

    .z6c4dfrelated-thumb {
        flex: none;
        width: 100%;
    }

    .z6c4dfrelated-thumb img {
        width: 100%;
        height: auto;
        max-height: 180px;
    }

    .z6c4dffooter-content {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .z6c4dfpages-lr .pagelist {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .z6c4dfcontainer,
    .container {
        padding: 0 14px;
    }

    .z6c4dfarticles-grid {
        grid-template-columns: 1fr;
    }

    .z6c4dfpillars,
    .z6c4dftimeline,
    .z6c4dfcontact-row {
        grid-template-columns: 1fr;
    }

    .z6c4dftrust-inner {
        gap: 8px;
    }

    .z6c4dftrust-inner span {
        font-size: 12px;
        padding: 3px 10px;
    }

    .z6c4dfmain-wrap {
        padding: 24px 14px 40px;
    }
}