/* ===== 空放官网主题 · 墨绿 + 暖金 ===== */
:root {
    --c-primary: #1b4332;
    --c-primary-dark: #081c15;
    --c-primary-light: #2d6a4f;
    --c-accent: #d4a373;
    --c-accent-dark: #bc6c25;
    --c-bg: #f4f7f5;
    --c-bg-alt: #e8efeb;
    --c-card: #ffffff;
    --c-text: #2d3748;
    --c-muted: #64748b;
    --c-border: #d8e2dc;
    --c-shadow: 0 8px 24px rgba(8, 28, 21, 0.08);
    --c-radius: 12px;
    --c-header-h: 72px;
    --c-max: 1140px;
    --c-gap: 24px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.65;
    color: var(--c-text);
    background: var(--c-bg);
    overflow-x: hidden;
}

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

a {
    color: var(--c-primary-light);
    transition: color 0.2s ease;
}

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

.z64caecontainer {
    width: 100%;
    max-width: var(--c-max);
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== 顶栏导航 ===== */
.z64caeheader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.96);
    border-bottom: 1px solid var(--c-border);
    backdrop-filter: blur(8px);
}

.z64caeheader-inner,
.z64caeheader .z64caecontainer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: var(--c-header-h);
    gap: 16px;
}

.z64caelogo {
    font-size: 20px;
    font-weight: 700;
    flex-shrink: 0;
}

.z64caelogo a {
    color: var(--c-primary);
    text-decoration: none;
}

.z64caenav {
    display: flex;
    align-items: center;
}

.z64caenav-list {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    list-style: none;
    gap: 4px 0;
    justify-content: flex-end;
}

.z64caenav-item {
    margin-left: 4px;
}

.z64caenav-item a {
    display: block;
    padding: 8px 12px;
    font-size: 14px;
    font-weight: 500;
    color: var(--c-text);
    text-decoration: none;
    border-radius: 8px;
    white-space: nowrap;
}

.z64caenav-item a:hover,
.z64caenav-item.z64caethis a {
    color: var(--c-primary);
    background: var(--c-bg-alt);
}

.z64caemenu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 20px;
    cursor: pointer;
    border: none;
    background: none;
    flex-shrink: 0;
    z-index: 1002;
}

.z64caemenu-toggle span {
    display: block;
    height: 3px;
    background: var(--c-primary);
    border-radius: 2px;
    transition: 0.3s ease;
}

.z64caemenu-toggle.z64caeactive span:nth-child(1) {
    transform: translateY(8.5px) rotate(45deg);
}

.z64caemenu-toggle.z64caeactive span:nth-child(2) {
    opacity: 0;
}

.z64caemenu-toggle.z64caeactive span:nth-child(3) {
    transform: translateY(-8.5px) rotate(-45deg);
}

.z64caenav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(8, 28, 21, 0.45);
    z-index: 998;
}

.z64caenav-overlay.z64caeactive {
    display: block;
}

body.z64caenav-open {
    overflow: hidden;
}

/* ===== 按钮 ===== */
.z64caebtn {
    display: inline-block;
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.25s ease;
    text-align: center;
}

.z64caebtn-main {
    background: var(--c-accent);
    color: var(--c-primary-dark);
    border-color: var(--c-accent);
}

.z64caebtn-main:hover {
    background: var(--c-accent-dark);
    border-color: var(--c-accent-dark);
    color: #fff;
}

.z64caebtn-ghost {
    background: transparent;
    color: #fff;
    border-color: rgba(255, 255, 255, 0.7);
}

.z64caebtn-ghost:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
}

.z64caebtn-block {
    width: 100%;
}

.z64caelink-arrow {
    font-size: 14px;
    font-weight: 600;
    color: var(--c-primary-light);
    text-decoration: none;
}

.z64caelink-arrow:hover {
    color: var(--c-accent-dark);
}

/* ===== 首屏 Hero ===== */
.z64caehero {
    margin-top: var(--c-header-h);
    padding: 56px 0 48px;
    background: linear-gradient(135deg, var(--c-primary-dark) 0%, var(--c-primary) 55%, var(--c-primary-light) 100%);
    color: #fff;
    overflow: hidden;
}

.z64caehero-inner {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 40px;
    align-items: center;
}

.z64caehero-tag {
    display: inline-block;
    padding: 6px 14px;
    font-size: 13px;
    background: rgba(212, 163, 115, 0.25);
    border: 1px solid rgba(212, 163, 115, 0.5);
    border-radius: 20px;
    margin-bottom: 16px;
}

.z64caehero-title {
    font-size: clamp(26px, 4vw, 40px);
    line-height: 1.25;
    margin-bottom: 16px;
    font-weight: 700;
}

.z64caehero-desc {
    font-size: 16px;
    line-height: 1.75;
    opacity: 0.92;
    margin-bottom: 28px;
    max-width: 540px;
}

.z64caehero-desc strong {
    color: var(--c-accent);
    font-weight: 600;
}

.z64caehero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.z64caehero-visual {
    position: relative;
}

.z64caehero-visual img {
    border-radius: var(--c-radius);
    box-shadow: var(--c-shadow);
    width: 100%;
    max-height: 340px;
    object-fit: contain;
    background: rgba(255, 255, 255, 0.08);
}

.z64caehero-stats {
    list-style: none;
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.z64caehero-stats li {
    flex: 1;
    text-align: center;
    padding: 14px 8px;
    background: rgba(255, 255, 255, 0.12);
    border-radius: var(--c-radius);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.z64caehero-stats strong {
    display: block;
    font-size: 22px;
    color: var(--c-accent);
}

.z64caehero-stats span {
    font-size: 12px;
    opacity: 0.85;
}

/* ===== 步骤条 ===== */
.z64caestrip {
    background: var(--c-card);
    border-bottom: 1px solid var(--c-border);
}

.z64caestrip-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
}

.z64caestrip-item {
    padding: 22px 20px;
    border-right: 1px solid var(--c-border);
    text-align: center;
}

.z64caestrip-item:last-child {
    border-right: none;
}

.z64caestrip-item em {
    display: block;
    font-style: normal;
    font-size: 28px;
    font-weight: 700;
    color: var(--c-accent-dark);
    margin-bottom: 8px;
}

.z64caestrip-item p {
    font-size: 14px;
    color: var(--c-muted);
    line-height: 1.5;
}

/* ===== 通用区块 ===== */
.z64caesection {
    padding: 72px 0;
}

.z64caesection-alt {
    background: var(--c-bg-alt);
}

.z64caesection-head {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 40px;
}

.z64caesection-head-left {
    text-align: left;
    margin-left: 0;
    margin-right: 0;
}

.z64caesection-title {
    font-size: clamp(24px, 3vw, 32px);
    color: var(--c-primary);
    margin-bottom: 10px;
    font-weight: 700;
}

.z64caesection-title-light {
    color: #fff;
}

.z64caesection-sub {
    font-size: 16px;
    color: var(--c-muted);
}

/* ===== 产品卡片 ===== */
.z64caeproduct-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--c-gap);
    align-items: stretch;
}

.z64caeproduct-card {
    position: relative;
    background: var(--c-card);
    border: 1px solid var(--c-border);
    border-radius: var(--c-radius);
    padding: 28px 24px;
    display: flex;
    flex-direction: column;
    box-shadow: var(--c-shadow);
    transition: transform 0.25s ease, border-color 0.25s;
}

.z64caeproduct-card:hover {
    transform: translateY(-4px);
    border-color: var(--c-primary-light);
}

.z64caeproduct-featured {
    border-color: var(--c-accent);
    box-shadow: 0 12px 32px rgba(27, 67, 50, 0.12);
}

.z64caeproduct-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--c-accent);
    color: var(--c-primary-dark);
    font-size: 12px;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 4px;
}

.z64caeproduct-icon {
    width: 48px;
    height: 48px;
    line-height: 48px;
    text-align: center;
    background: var(--c-primary);
    color: #fff;
    font-weight: 700;
    border-radius: 10px;
    margin-bottom: 16px;
    font-size: 18px;
}

.z64caeproduct-card h3 {
    font-size: 20px;
    color: var(--c-primary);
    margin-bottom: 12px;
}

.z64caeproduct-card p {
    font-size: 14px;
    color: var(--c-muted);
    flex: 1;
    margin-bottom: 16px;
}

.z64caeproduct-meta {
    list-style: none;
    margin-bottom: 16px;
    font-size: 13px;
    color: var(--c-text);
}

.z64caeproduct-meta li {
    padding: 4px 0;
    border-bottom: 1px dashed var(--c-border);
}

.z64caeproduct-meta li:last-child {
    border-bottom: none;
}

/* ===== 流程 ===== */
.z64caeflow-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--c-gap);
    counter-reset: flow;
}

.z64caeflow-step {
    background: var(--c-card);
    border: 1px solid var(--c-border);
    border-radius: var(--c-radius);
    padding: 24px 20px;
    text-align: center;
    box-shadow: var(--c-shadow);
}

.z64caeflow-step span {
    display: inline-flex;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    background: var(--c-primary);
    color: #fff;
    font-weight: 700;
    border-radius: 50%;
    margin-bottom: 14px;
}

.z64caeflow-step h4 {
    font-size: 17px;
    color: var(--c-primary);
    margin-bottom: 8px;
}

.z64caeflow-step p {
    font-size: 14px;
    color: var(--c-muted);
    line-height: 1.55;
}

/* ===== 优势 ===== */
.z64caeadv-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.z64caeadv-card {
    background: var(--c-card);
    border: 1px solid var(--c-border);
    border-radius: var(--c-radius);
    padding: 22px 20px;
    border-left: 4px solid var(--c-accent);
    box-shadow: var(--c-shadow);
}

.z64caeadv-card h4 {
    font-size: 17px;
    color: var(--c-primary);
    margin-bottom: 8px;
}

.z64caeadv-card p {
    font-size: 14px;
    color: var(--c-muted);
    line-height: 1.55;
}

/* ===== 知识专区 ===== */
.z64caeknowledge {
    background: var(--c-card);
}

.z64caeknowledge-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 40px;
    align-items: start;
}

.z64caeknowledge-body {
    display: grid;
    gap: 20px;
}

.z64caeknowledge-block {
    padding: 22px 24px;
    background: var(--c-bg);
    border: 1px solid var(--c-border);
    border-radius: var(--c-radius);
}

.z64caeknowledge-block h3 {
    font-size: 17px;
    color: var(--c-primary);
    margin-bottom: 10px;
}

.z64caeknowledge-block p {
    font-size: 15px;
    color: var(--c-muted);
    line-height: 1.75;
}

/* ===== FAQ ===== */
.z64caefaq-list {
    max-width: 880px;
    margin: 0 auto;
}

.z64caefaq-item {
    background: var(--c-card);
    border: 1px solid var(--c-border);
    border-radius: var(--c-radius);
    margin-bottom: 12px;
    overflow: hidden;
}

.z64caefaq-item summary {
    padding: 18px 22px;
    font-weight: 600;
    color: var(--c-primary);
    cursor: pointer;
    list-style: none;
}

.z64caefaq-item summary::-webkit-details-marker {
    display: none;
}

.z64caefaq-item p {
    padding: 0 22px 18px;
    font-size: 14px;
    color: var(--c-muted);
    line-height: 1.7;
}

/* ===== 首页资讯（仅标题+图） ===== */
.z64caehome-articles {
    background: var(--c-bg-alt);
}

.z64caehome-articles-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 18px;
}

.z64caehome-article-card {
    background: var(--c-card);
    border: 1px solid var(--c-border);
    border-radius: var(--c-radius);
    overflow: hidden;
    box-shadow: var(--c-shadow);
    transition: transform 0.25s ease;
}

.z64caehome-article-card:hover {
    transform: translateY(-3px);
}

.z64caehome-article-thumb {
    display: block;
    height: 120px;
    overflow: hidden;
    background: var(--c-bg-alt);
}

.z64caehome-article-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.z64caehome-article-info {
    padding: 12px 14px 14px;
}

.z64caehome-article-info h3 {
    font-size: 14px;
    line-height: 1.45;
    margin-bottom: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 40px;
}

.z64caehome-article-info h3 a {
    color: var(--c-text);
    text-decoration: none;
}

.z64caehome-article-info h3 a:hover {
    color: var(--c-primary-light);
}

.z64caehome-article-date {
    font-size: 12px;
    color: var(--c-muted);
}

/* ===== 联系 ===== */
.z64caecontact {
    background: linear-gradient(160deg, var(--c-primary-dark), var(--c-primary));
    color: #fff;
}

.z64caecontact-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.z64caecontact-intro-box p {
    opacity: 0.9;
    margin-bottom: 20px;
    line-height: 1.7;
}

.z64caecontact-quick {
    list-style: none;
    font-size: 15px;
}

.z64caecontact-quick li {
    padding: 6px 0;
    opacity: 0.88;
}

.z64caecontact-form {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--c-radius);
    padding: 28px;
}

.z64caeform-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 12px;
}

.z64caecontact-form input,
.z64caecontact-form select,
.z64caecontact-form textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--c-border);
    border-radius: 8px;
    font-size: 15px;
    font-family: inherit;
    background: #fff;
    color: var(--c-text);
}

.z64caecontact-form textarea {
    margin-bottom: 12px;
    resize: vertical;
    min-height: 100px;
}

/* ===== 页脚 ===== */
.z64caefooter {
    background: var(--c-primary-dark);
    color: rgba(255, 255, 255, 0.85);
    padding: 48px 0 24px;
}

.z64caefooter-wrapper {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 32px;
    padding-bottom: 28px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.z64caefooter-info h3,
.z64caefooter-links h4,
.z64caefooter-contact h4 {
    color: #fff;
    margin-bottom: 14px;
    font-size: 16px;
}

.z64caefooter-info p {
    font-size: 14px;
    line-height: 1.6;
    opacity: 0.8;
}

.z64caefooter-links ul {
    list-style: none;
}

.z64caefooter-links a {
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    font-size: 14px;
    line-height: 2;
}

.z64caefooter-links a:hover {
    color: var(--c-accent);
}

.z64caefooter-contact p {
    font-size: 14px;
    margin-bottom: 6px;
    opacity: 0.8;
}

.z64caefooter-bottom {
    padding-top: 20px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    font-size: 13px;
    opacity: 0.75;
}

.z64caefooter-bottom a {
    color: var(--c-accent);
}

.z64caefriend-links ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
}

.z64caefriend-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 13px;
}

/* ===== 内页通用 ===== */
.z64caepage-main {
    margin-top: var(--c-header-h);
    padding: 32px 0 64px;
    min-height: 50vh;
}

.z64caebreadcrumb {
    font-size: 14px;
    color: var(--c-muted);
    margin-bottom: 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    align-items: center;
}

.z64caebreadcrumb a {
    color: var(--c-primary-light);
    text-decoration: none;
}

.z64caebreadcrumb-sep {
    color: var(--c-border);
}

.z64caepage-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 28px;
    align-items: start;
}

.z64caepage-content {
    background: var(--c-card);
    border: 1px solid var(--c-border);
    border-radius: var(--c-radius);
    padding: 28px;
    box-shadow: var(--c-shadow);
    min-width: 0;
    overflow: hidden;
}

.z64caepage-head {
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--c-border);
}

.z64caepage-title {
    font-size: 26px;
    color: var(--c-primary);
    line-height: 1.35;
}

.z64caepage-desc {
    margin-top: 10px;
    color: var(--c-muted);
    font-size: 15px;
}

/* 列表页 */
.z64caelist-items {
    list-style: none;
}

.z64caelist-item {
    display: flex;
    gap: 20px;
    padding: 22px 0;
    border-bottom: 1px solid var(--c-border);
}

.z64caelist-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.z64caelist-thumb {
    flex: 0 0 200px;
    width: 200px;
    height: 140px;
    border-radius: 10px;
    overflow: hidden;
    background: var(--c-bg-alt);
    display: block;
}

.z64caelist-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.z64caelist-body {
    flex: 1;
    min-width: 0;
}

.z64caelist-title {
    font-size: 18px;
    margin-bottom: 10px;
    line-height: 1.4;
}

.z64caelist-title a {
    color: var(--c-text);
    text-decoration: none;
}

.z64caelist-title a:hover {
    color: var(--c-primary-light);
}

.z64caelist-meta {
    font-size: 13px;
    color: var(--c-muted);
    margin-bottom: 10px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.z64caelist-intro {
    font-size: 14px;
    color: var(--c-muted);
    line-height: 1.65;
    margin-bottom: 8px;
}

.z64caelist-more {
    font-size: 14px;
    font-weight: 600;
    color: var(--c-primary-light);
    text-decoration: none;
}

/* 分页 */
.z64caepagebar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
    padding-top: 22px;
    border-top: 1px solid var(--c-border);
}

.z64caepagebar-prev {
    flex: 0 0 auto;
    text-align: left;
}

.z64caepagebar-center {
    flex: 1;
    text-align: center;
    min-width: 0;
}

.z64caepagebar-next {
    flex: 0 0 auto;
    text-align: right;
}

.z64caepagebar ul,
.z64caepagebar-center ul,
.z64caepagebar-prev ul,
.z64caepagebar-next ul {
    list-style: none;
    display: inline-flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: center;
    align-items: center;
    margin: 0;
    padding: 0;
}

.z64caepagebar a,
.z64caepagebar span {
    display: inline-block;
    padding: 8px 14px;
    font-size: 14px;
    text-decoration: none;
    color: var(--c-text);
    background: var(--c-bg);
    border: 1px solid var(--c-border);
    border-radius: 6px;
    line-height: 1.3;
}

.z64caepagebar a:hover {
    background: var(--c-primary);
    color: #fff;
    border-color: var(--c-primary);
}

/* 内容页 */
.z64caearticle-title {
    font-size: 28px;
    color: var(--c-primary-dark);
    line-height: 1.35;
    margin-bottom: 14px;
}

.z64caearticle-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 18px;
    font-size: 13px;
    color: var(--c-muted);
    padding-bottom: 18px;
    margin-bottom: 22px;
    border-bottom: 1px solid var(--c-border);
}

.z64caearticle-meta a {
    color: var(--c-primary-light);
}

.z64caearticle-thumb {
    margin-bottom: 22px;
    border-radius: var(--c-radius);
    overflow: hidden;
    border: 1px solid var(--c-border);
    text-align: center;
    background: var(--c-bg-alt);
}

.z64caearticle-body {
    font-size: 16px;
    line-height: 1.85;
    color: var(--c-text);
    word-break: break-word;
    overflow-wrap: break-word;
}

.z64caearticle-body img {
    max-width: 100%;
    height: auto;
    margin: 16px auto;
    border-radius: 8px;
}

.z64caearticle-body table {
    max-width: 100%;
    overflow-x: auto;
    display: block;
}

.z64caearticle-gallery {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px dashed var(--c-border);
}

.z64caearticle-gallery p {
    margin-bottom: 16px;
}

.z64caediyfield {
    margin-top: 20px;
    padding: 18px;
    background: var(--c-bg);
    border-radius: var(--c-radius);
    border: 1px solid var(--c-border);
    font-size: 15px;
}

.z64caemeta-tags {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 22px;
}

.z64caetagitem a {
    display: inline-block;
    padding: 5px 12px;
    background: var(--c-bg-alt);
    color: var(--c-primary);
    border-radius: 16px;
    font-size: 13px;
    text-decoration: none;
}

.z64caearticle-pager {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 20px;
    margin-top: 28px;
    padding-top: 22px;
    border-top: 1px solid var(--c-border);
    font-size: 14px;
    flex-wrap: wrap;
}

.z64caearticle-pager a {
    color: var(--c-primary-light);
    text-decoration: none;
    max-width: 48%;
    line-height: 1.5;
}

.z64caearticle-pager a:hover {
    color: var(--c-accent-dark);
}

.z64caerelated {
    margin-top: 36px;
    padding-top: 28px;
    border-top: 2px solid var(--c-border);
}

.z64caerelated-title {
    font-size: 20px;
    color: var(--c-primary);
    margin-bottom: 20px;
}

.z64caerelated-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.z64caerelated-item {
    border: 1px solid var(--c-border);
    border-radius: var(--c-radius);
    overflow: hidden;
    background: var(--c-bg);
}

.z64caerelated-thumb {
    display: block;
    height: 120px;
    overflow: hidden;
    background: var(--c-bg-alt);
}

.z64caerelated-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.z64caerelated-body {
    padding: 12px 14px;
}

.z64caerelated-body h4 {
    font-size: 14px;
    margin-bottom: 6px;
    line-height: 1.4;
}

.z64caerelated-body h4 a {
    color: var(--c-text);
    text-decoration: none;
}

.z64caerelated-body p {
    font-size: 12px;
    color: var(--c-muted);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 侧栏 */
.z64caesidebar {
    position: sticky;
    top: calc(var(--c-header-h) + 16px);
    min-width: 0;
}

.z64caesidebar-box {
    background: var(--c-card);
    border: 1px solid var(--c-border);
    border-radius: var(--c-radius);
    padding: 20px;
    box-shadow: var(--c-shadow);
}

.z64caesidebar-title {
    font-size: 17px;
    color: var(--c-primary);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--c-accent);
}

.z64caesidebar-list {
    list-style: none;
    max-height: 480px;
    overflow-y: auto;
    overflow-x: hidden;
}

.z64caesidebar-item {
    border-bottom: 1px solid var(--c-border);
}

.z64caesidebar-item:last-child {
    border-bottom: none;
}

.z64caesidebar-item a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
    text-decoration: none;
    color: var(--c-text);
    font-size: 13px;
    line-height: 1.4;
}

.z64caesidebar-item a:hover {
    color: var(--c-primary-light);
}

.z64caesidebar-thumb {
    flex: 0 0 56px;
    width: 56px;
    height: 42px;
    border-radius: 6px;
    overflow: hidden;
    background: var(--c-bg-alt);
}

.z64caesidebar-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.z64caesidebar-text {
    flex: 1;
    min-width: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ===== 响应式 ===== */
@media (max-width: 1100px) {
    .z64caehome-articles-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .z64caepage-layout {
        grid-template-columns: 1fr 260px;
    }
}

@media (max-width: 992px) {
    .z64caemenu-toggle {
        display: flex;
    }

    .z64caenav {
        position: fixed;
        top: 0;
        right: -100%;
        width: min(300px, 88vw);
        height: 100vh;
        background: var(--c-card);
        box-shadow: -4px 0 24px rgba(0, 0, 0, 0.12);
        padding: calc(var(--c-header-h) + 12px) 16px 24px;
        overflow-y: auto;
        transition: right 0.3s ease;
        z-index: 999;
    }

    .z64caenav.z64caeactive {
        right: 0;
    }

    .z64caenav-list {
        flex-direction: column;
        align-items: stretch;
    }

    .z64caenav-item {
        margin: 0;
        border-bottom: 1px solid var(--c-border);
    }

    .z64caenav-item a {
        padding: 14px 12px;
        border-radius: 0;
    }

    .z64caehero-inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .z64caehero-desc {
        margin-left: auto;
        margin-right: auto;
    }

    .z64caehero-actions {
        justify-content: center;
    }

    .z64caehero-visual {
        max-width: 420px;
        margin: 0 auto;
    }

    .z64caestrip-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .z64caestrip-item:nth-child(2) {
        border-right: none;
    }

    .z64caestrip-item:nth-child(1),
    .z64caestrip-item:nth-child(2) {
        border-bottom: 1px solid var(--c-border);
    }

    .z64caeproduct-grid,
    .z64caeadv-grid,
    .z64caeflow-list {
        grid-template-columns: repeat(2, 1fr);
    }

    .z64caeknowledge-layout {
        grid-template-columns: 1fr;
    }

    .z64caesection-head-left {
        text-align: center;
    }

    .z64caehome-articles-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .z64caecontact-wrap {
        grid-template-columns: 1fr;
    }

    .z64caefooter-wrapper {
        grid-template-columns: 1fr 1fr;
    }

    .z64caepage-layout {
        grid-template-columns: 1fr;
    }

    .z64caesidebar {
        position: static;
    }

    .z64caelist-item {
        flex-direction: column;
    }

    .z64caelist-thumb {
        width: 100%;
        flex: none;
        height: 180px;
    }

    .z64caerelated-list {
        grid-template-columns: repeat(2, 1fr);
    }

    .z64caepagebar {
        flex-direction: column;
        align-items: stretch;
    }

    .z64caepagebar-prev,
    .z64caepagebar-next,
    .z64caepagebar-center {
        text-align: center;
    }
}

@media (max-width: 640px) {
    :root {
        --c-header-h: 60px;
    }

    .z64caesection {
        padding: 48px 0;
    }

    .z64caestrip-grid {
        grid-template-columns: 1fr;
    }

    .z64caestrip-item {
        border-right: none;
        border-bottom: 1px solid var(--c-border);
    }

    .z64caestrip-item:last-child {
        border-bottom: none;
    }

    .z64caeproduct-grid,
    .z64caeadv-grid,
    .z64caeflow-list,
    .z64caerelated-list {
        grid-template-columns: 1fr;
    }

    .z64caehome-articles-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .z64caeform-row {
        grid-template-columns: 1fr;
    }

    .z64caefooter-wrapper {
        grid-template-columns: 1fr;
    }

    .z64caefooter-bottom {
        flex-direction: column;
        text-align: center;
    }

    .z64caepage-content {
        padding: 18px 16px;
    }

    .z64caearticle-title,
    .z64caepage-title {
        font-size: 22px;
    }

    .z64caearticle-pager a {
        max-width: 100%;
    }

    .z64caehero {
        padding: 40px 0 32px;
    }

    .z64caehero-stats {
        flex-direction: column;
    }
}

@media (max-width: 400px) {
    .z64caehome-articles-grid {
        grid-template-columns: 1fr;
    }
}