/* ===== 官网主题变量（靛蓝 + 琥珀） ===== */
:root {
    --c-primary: #3b4fd8;
    --c-primary-dark: #2a3ba8;
    --c-accent: #c17817;
    --c-accent-light: #f5ebe0;
    --c-bg: #f4f6fa;
    --c-surface: #ffffff;
    --c-text: #1c2333;
    --c-muted: #5c6678;
    --c-border: #d8dee8;
    --c-shadow: 0 4px 24px rgba(28, 35, 51, 0.06);
    --radius: 10px;
    --radius-lg: 14px;
    --container: 1140px;
    --gap: 1.25rem;
    --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    background: var(--c-bg);
    color: var(--c-text);
    line-height: 1.65;
    min-height: 100vh;
    overflow-x: hidden;
}

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

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

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

.z64d33container {
    width: 92%;
    max-width: var(--container);
    margin: 0 auto;
}

/* ===== 导航 ===== */
.z64d33navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--c-surface);
    border-bottom: 1px solid var(--c-border);
    box-shadow: 0 1px 0 rgba(255,255,255,0.8);
}

.z64d33nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-height: 64px;
    padding: 0.5rem 0;
}

.z64d33brand {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    text-decoration: none;
    color: var(--c-text);
    font-weight: 700;
    font-size: 1.05rem;
    flex-shrink: 0;
    max-width: 42%;
}

.z64d33brand-mark {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--c-primary), var(--c-primary-dark));
    flex-shrink: 0;
}

.z64d33brand-text {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.z64d33nav-links {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 0.15rem 0.5rem;
}

.z64d33nav-links a {
    color: var(--c-muted);
    text-decoration: none;
    font-size: 0.9rem;
    padding: 0.45rem 0.65rem;
    border-radius: 6px;
    white-space: nowrap;
}

.z64d33nav-links a:hover,
.z64d33nav-links a.z64d33this,
.z64d33nav-item.z64d33this {
    color: var(--c-primary);
    background: rgba(59, 79, 216, 0.08);
}

.z64d33nav-cta {
    background: var(--c-primary) !important;
    color: #fff !important;
    font-weight: 600;
}

.z64d33nav-cta:hover {
    background: var(--c-primary-dark) !important;
    color: #fff !important;
}

.z64d33nav-toggle {
    display: none;
    border: 1px solid var(--c-border);
    background: var(--c-surface);
    color: var(--c-primary);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.4rem 0.75rem;
    border-radius: 6px;
    cursor: pointer;
}

/* ===== 首页 Hero ===== */
.z64d33hero {
    background: linear-gradient(160deg, #eef1fb 0%, #f8f9fc 45%, #fff 100%);
    border-bottom: 1px solid var(--c-border);
    padding: 3rem 0 2.5rem;
}

.z64d33hero-inner {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 2.5rem;
    align-items: center;
}

.z64d33label {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--c-accent);
    background: var(--c-accent-light);
    padding: 0.25rem 0.65rem;
    border-radius: 4px;
    margin-bottom: 0.85rem;
}

.z64d33hero-copy h1 {
    font-size: clamp(1.55rem, 3.5vw, 2.15rem);
    line-height: 1.35;
    color: var(--c-text);
    margin-bottom: 0.75rem;
    font-weight: 700;
}

.z64d33hero-lead {
    color: var(--c-muted);
    font-size: 1rem;
    margin-bottom: 0.65rem;
}

.z64d33hero-sub {
    font-size: 0.92rem;
    color: var(--c-muted);
    margin-bottom: 1.25rem;
}

.z64d33hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.z64d33btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.65rem 1.35rem;
    border-radius: 8px;
    font-size: 0.92rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, box-shadow 0.2s;
}

.z64d33btn-primary {
    background: var(--c-primary);
    color: #fff;
}

.z64d33btn-primary:hover {
    background: var(--c-primary-dark);
    color: #fff;
}

.z64d33btn-outline {
    background: transparent;
    color: var(--c-primary);
    border: 1.5px solid var(--c-primary);
}

.z64d33btn-outline:hover {
    background: rgba(59, 79, 216, 0.08);
}

.z64d33btn-block {
    width: 100%;
}

.z64d33hero-stats {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.z64d33hero-stats li {
    display: flex;
    flex-direction: column;
}

.z64d33hero-stats strong {
    font-size: 1.35rem;
    color: var(--c-primary);
    line-height: 1.2;
}

.z64d33hero-stats span {
    font-size: 0.8rem;
    color: var(--c-muted);
}

.z64d33hero-visual {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--c-border);
    box-shadow: var(--c-shadow);
    background: var(--c-surface);
}

.z64d33hero-visual img {
    width: 100%;
    object-fit: cover;
}

/* ===== 优势条 ===== */
.z64d33strip {
    background: var(--c-surface);
    border-bottom: 1px solid var(--c-border);
    padding: 1.75rem 0;
}

.z64d33strip-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--gap);
}

.z64d33strip-item {
    padding: 1rem 1.1rem;
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    background: var(--c-bg);
}

.z64d33strip-item h3 {
    font-size: 0.95rem;
    color: var(--c-primary);
    margin-bottom: 0.45rem;
}

.z64d33strip-item p {
    font-size: 0.88rem;
    color: var(--c-muted);
    line-height: 1.6;
}

/* ===== 通用板块 ===== */
.z64d33section {
    padding: 3rem 0;
}

.z64d33section-alt {
    background: var(--c-surface);
    border-top: 1px solid var(--c-border);
    border-bottom: 1px solid var(--c-border);
}

.z64d33sec-head {
    margin-bottom: 1.75rem;
    max-width: 720px;
}

.z64d33sec-head-center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.z64d33sec-tag {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--c-accent);
    margin-bottom: 0.35rem;
}

.z64d33sec-head h2 {
    font-size: clamp(1.35rem, 2.5vw, 1.75rem);
    color: var(--c-text);
    margin-bottom: 0.5rem;
}

.z64d33sec-head p {
    color: var(--c-muted);
    font-size: 0.95rem;
}

/* ===== 服务卡片 ===== */
.z64d33svc-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--gap);
}

.z64d33svc-card {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 1.35rem 1.4rem;
    box-shadow: var(--c-shadow);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.z64d33svc-card:hover {
    border-color: var(--c-primary);
    box-shadow: 0 8px 28px rgba(59, 79, 216, 0.1);
}

.z64d33svc-num {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--c-accent);
    margin-bottom: 0.5rem;
}

.z64d33svc-card h3 {
    font-size: 1.02rem;
    color: var(--c-text);
    margin-bottom: 0.55rem;
    line-height: 1.4;
}

.z64d33svc-card p {
    font-size: 0.9rem;
    color: var(--c-muted);
}

/* ===== 百科布局 ===== */
.z64d33know-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 1.5rem;
    align-items: start;
}

.z64d33know-main {
    display: grid;
    gap: var(--gap);
}

.z64d33panel {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    padding: 1.15rem 1.25rem;
}

.z64d33panel h3,
.z64d33panel h4 {
    font-size: 1rem;
    color: var(--c-text);
    margin-bottom: 0.5rem;
}

.z64d33panel p {
    font-size: 0.9rem;
    color: var(--c-muted);
}

.z64d33panel-accent {
    border-left: 3px solid var(--c-primary);
}

.z64d33know-side {
    display: flex;
    flex-direction: column;
    gap: var(--gap);
}

.z64d33steps {
    padding-left: 1.2rem;
    color: var(--c-muted);
    font-size: 0.9rem;
}

.z64d33steps li {
    margin-bottom: 0.35rem;
}

/* ===== FAQ ===== */
.z64d33faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--gap);
    max-width: 960px;
    margin: 0 auto;
}

.z64d33faq {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    padding: 0.25rem 1rem;
}

.z64d33faq summary {
    cursor: pointer;
    font-weight: 600;
    font-size: 0.92rem;
    color: var(--c-text);
    padding: 0.85rem 0;
    list-style: none;
}

.z64d33faq summary::-webkit-details-marker {
    display: none;
}

.z64d33faq p {
    font-size: 0.88rem;
    color: var(--c-muted);
    padding-bottom: 0.9rem;
    border-top: 1px solid var(--c-border);
    padding-top: 0.75rem;
}

/* ===== 首页文章网格 ===== */
.z64d33article-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--gap);
}

.z64d33article-card {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.z64d33article-thumb {
    display: block;
    aspect-ratio: 16/10;
    overflow: hidden;
    background: var(--c-bg);
}

.z64d33article-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.z64d33article-info {
    padding: 0.75rem 0.85rem 0.9rem;
    flex: 1;
    min-width: 0;
}

.z64d33article-info h3 {
    font-size: 0.85rem;
    line-height: 1.4;
    margin-bottom: 0.35rem;
}

.z64d33article-info h3 a {
    color: var(--c-text);
    text-decoration: none;
}

.z64d33article-info h3 a:hover {
    color: var(--c-primary);
}

.z64d33article-date {
    font-size: 0.75rem;
    color: var(--c-muted);
}

/* ===== 关于 ===== */
.z64d33about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--gap);
}

.z64d33about-card {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    padding: 1.2rem;
    text-align: center;
}

.z64d33about-card h4 {
    color: var(--c-primary);
    margin-bottom: 0.45rem;
    font-size: 1rem;
}

.z64d33about-card p {
    font-size: 0.88rem;
    color: var(--c-muted);
}

/* ===== 联系 ===== */
.z64d33section-contact {
    background: linear-gradient(180deg, var(--c-bg) 0%, #e8ecf8 100%);
}

.z64d33contact-grid {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 1.5rem;
    align-items: start;
}

.z64d33contact-form {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--c-shadow);
}

.z64d33form-group {
    margin-bottom: 1rem;
}

.z64d33form-group label {
    display: block;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--c-text);
    margin-bottom: 0.35rem;
}

.z64d33form-group input,
.z64d33form-group select,
.z64d33form-group textarea {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--c-border);
    border-radius: 8px;
    font-size: 0.92rem;
    font-family: inherit;
    background: var(--c-bg);
    color: var(--c-text);
}

.z64d33form-group input:focus,
.z64d33form-group select:focus,
.z64d33form-group textarea:focus {
    outline: none;
    border-color: var(--c-primary);
    box-shadow: 0 0 0 3px rgba(59, 79, 216, 0.12);
}

.z64d33contact-aside {
    display: flex;
    flex-direction: column;
    gap: var(--gap);
}

.z64d33checklist {
    list-style: none;
    font-size: 0.9rem;
    color: var(--c-muted);
}

.z64d33checklist li {
    padding: 0.3rem 0 0.3rem 1.2rem;
    position: relative;
}

.z64d33checklist li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--c-primary);
    font-weight: 700;
}

/* ===== 页脚 ===== */
.z64d33footer {
    background: var(--c-text);
    color: #a8b0c0;
    padding: 1.75rem 0;
    font-size: 0.88rem;
    text-align: center;
}

.z64d33footer a {
    color: #c5cce0;
}

.z64d33stat-code {
    margin-top: 0.5rem;
}

.z64d33flink {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255,255,255,0.12);
}

.flink_title {
    color: #dce2f0;
    margin-bottom: 0.5rem;
}

.flink_list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem 1rem;
}

/* ===== 列表页 / 内页 ===== */
.z64d33page-banner {
    background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%);
    padding: 1.75rem 0;
    color: #fff;
}

.z64d33page-banner h1 {
    font-size: clamp(1.25rem, 3vw, 1.65rem);
    margin-bottom: 0.35rem;
}

.z64d33breadcrumb {
    font-size: 0.88rem;
    opacity: 0.9;
}

.z64d33breadcrumb a {
    color: #fff;
    text-decoration: underline;
}

.z64d33page-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 1.5rem;
    padding: 2rem 0 2.5rem;
    align-items: start;
}

.z64d33main-col {
    min-width: 0;
}

.z64d33listbox,
.z64d33article-detail,
.z64d33related {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    box-shadow: var(--c-shadow);
}

.z64d33list-items {
    list-style: none;
}

.z64d33list-item {
    display: flex;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--c-border);
    min-width: 0;
}

.z64d33list-item:last-child {
    border-bottom: none;
}

.z64d33list-thumb {
    flex: 0 0 180px;
    max-width: 180px;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--c-border);
}

.z64d33list-thumb img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

.z64d33list-body {
    flex: 1;
    min-width: 0;
}

.z64d33list-title {
    font-size: 1.05rem;
    margin-bottom: 0.4rem;
}

.z64d33list-title a {
    color: var(--c-text);
    text-decoration: none;
}

.z64d33list-title a:hover {
    color: var(--c-primary);
}

.z64d33list-meta {
    font-size: 0.82rem;
    color: var(--c-muted);
    margin-bottom: 0.4rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
}

.z64d33list-intro {
    font-size: 0.9rem;
    color: var(--c-muted);
    word-break: break-word;
}

/* 分页 */
.z64d33pagebar {
    margin-top: 1.25rem;
}

.z64d33pages {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    padding: 0.85rem 1rem;
}

.z64d33pagelist-full {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
}

.z64d33pagelist-full a,
.z64d33pagelist-full span {
    display: inline-block;
    padding: 0.35rem 0.7rem;
    border: 1px solid var(--c-border);
    border-radius: 6px;
    font-size: 0.85rem;
    color: var(--c-text);
    text-decoration: none;
    background: var(--c-bg);
}

.z64d33pagelist-full a:hover {
    background: var(--c-primary);
    color: #fff;
    border-color: var(--c-primary);
}

.z64d33pagelist-full .thisclass a {
    background: var(--c-primary);
    color: #fff;
    border-color: var(--c-primary);
}

/* 侧栏 */
.z64d33sidebar {
    position: sticky;
    top: 76px;
    min-width: 0;
}

.z64d33sidebar-block {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: 1rem;
    box-shadow: var(--c-shadow);
}

.z64d33sidebar-title {
    font-size: 0.95rem;
    color: var(--c-primary);
    margin-bottom: 0.85rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--c-border);
}

.z64d33sidebar-list {
    list-style: none;
    max-height: 480px;
    overflow-y: auto;
}

.z64d33sidebar-item {
    display: flex;
    gap: 0.6rem;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--c-border);
    min-width: 0;
}

.z64d33sidebar-item:last-child {
    border-bottom: none;
}

.z64d33sidebar-thumb {
    flex: 0 0 72px;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--c-border);
}

.z64d33sidebar-thumb img {
    width: 72px;
    height: 54px;
    object-fit: cover;
}

.z64d33sidebar-meta {
    flex: 1;
    min-width: 0;
}

.z64d33sidebar-link {
    font-size: 0.82rem;
    color: var(--c-text);
    text-decoration: none;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.z64d33sidebar-date {
    font-size: 0.72rem;
    color: var(--c-muted);
}

/* 内容页 */
.z64d33article-detail {
    margin-bottom: 1.25rem;
}

.z64d33article-title {
    font-size: clamp(1.2rem, 2.5vw, 1.55rem);
    color: var(--c-text);
    margin-bottom: 0.65rem;
    line-height: 1.4;
    word-break: break-word;
}

.z64d33article-meta {
    font-size: 0.85rem;
    color: var(--c-muted);
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1rem;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--c-border);
}

.z64d33article-litpic {
    margin-bottom: 1rem;
    text-align: center;
}

.z64d33article-litpic:empty,
.z64d33article-litpic img[src=""] {
    display: none;
}

.z64d33article-litpic img {
    max-width: 100%;
    border-radius: var(--radius);
    border: 1px solid var(--c-border);
}

.z64d33article-content {
    font-size: 1rem;
    color: var(--c-text);
    line-height: 1.85;
    word-break: break-word;
    overflow-wrap: break-word;
}

.z64d33article-content img {
    max-width: 100% !important;
    height: auto !important;
}

.z64d33article-content table {
    max-width: 100%;
    overflow-x: auto;
    display: block;
}

.z64d33diyfield {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--c-border);
}

.z64d33article-gallery-item {
    margin: 0.75rem 0;
    text-align: center;
}

.z64d33article-gallery-item img {
    border-radius: var(--radius);
    border: 1px solid var(--c-border);
}

.z64d33article-topic {
    margin-top: 1rem;
    font-size: 0.88rem;
    color: var(--c-muted);
}

.z64d33topic-label {
    color: var(--c-primary);
    font-weight: 600;
}

.z64d33meta-tags {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: 0.75rem;
}

.z64d33tagitem a {
    display: inline-block;
    padding: 0.2rem 0.65rem;
    background: var(--c-bg);
    border: 1px solid var(--c-border);
    border-radius: 20px;
    font-size: 0.8rem;
    text-decoration: none;
}

.z64d33prenext {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 1.25rem;
    padding-top: 1rem;
    border-top: 1px solid var(--c-border);
    flex-wrap: wrap;
}

.z64d33prenext-item {
    flex: 1 1 45%;
    min-width: 0;
    font-size: 0.9rem;
    color: var(--c-muted);
    word-break: break-word;
}

.z64d33prenext-next {
    text-align: right;
}

.z64d33related h2 {
    font-size: 1.1rem;
    color: var(--c-text);
    margin-bottom: 1rem;
}

.z64d33related-list {
    list-style: none;
}

.z64d33related-item {
    display: flex;
    gap: 0.85rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--c-border);
    min-width: 0;
}

.z64d33related-item:last-child {
    border-bottom: none;
}

.z64d33related-thumb {
    flex: 0 0 100px;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--c-border);
}

.z64d33related-thumb img {
    width: 100px;
    height: 75px;
    object-fit: cover;
}

.z64d33related-body {
    flex: 1;
    min-width: 0;
}

.z64d33related-body a {
    font-weight: 600;
    text-decoration: none;
}

.z64d33related-body p {
    font-size: 0.85rem;
    color: var(--c-muted);
    margin-top: 0.25rem;
}

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

/* ===== 响应式 ===== */
@media (max-width: 1100px) {
    .z64d33article-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 992px) {
    .z64d33hero-inner {
        grid-template-columns: 1fr;
    }
    .z64d33hero-visual {
        max-width: 480px;
        margin: 0 auto;
    }
    .z64d33strip-grid {
        grid-template-columns: 1fr;
    }
    .z64d33know-layout {
        grid-template-columns: 1fr;
    }
    .z64d33article-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .z64d33page-layout {
        grid-template-columns: 1fr 260px;
    }
    .z64d33about-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 900px) {
    .z64d33nav-toggle {
        display: block;
    }
    .z64d33nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--c-surface);
        border-bottom: 1px solid var(--c-border);
        flex-direction: column;
        align-items: stretch;
        padding: 0.75rem 1rem 1rem;
        box-shadow: var(--c-shadow);
        max-height: 70vh;
        overflow-y: auto;
    }
    .z64d33nav-links.z64d33nav-open {
        display: flex;
    }
    .z64d33nav-links a {
        width: 100%;
        white-space: normal;
    }
    .z64d33nav-container {
        position: relative;
        flex-wrap: wrap;
    }
    .z64d33brand {
        max-width: 70%;
    }
    .z64d33svc-grid,
    .z64d33faq-grid {
        grid-template-columns: 1fr;
    }
    .z64d33contact-grid {
        grid-template-columns: 1fr;
    }
    .z64d33page-layout {
        grid-template-columns: 1fr;
    }
    .z64d33sidebar {
        position: static;
    }
    .z64d33sidebar-list {
        max-height: none;
    }
    .z64d33list-item {
        flex-direction: column;
    }
    .z64d33list-thumb {
        flex: none;
        max-width: 100%;
        width: 100%;
    }
    .z64d33prenext-next {
        text-align: left;
    }
}

@media (max-width: 640px) {
    .z64d33section {
        padding: 2rem 0;
    }
    .z64d33article-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .z64d33about-grid {
        grid-template-columns: 1fr;
    }
    .z64d33related-item {
        flex-direction: column;
    }
    .z64d33related-thumb {
        flex: none;
        width: 100%;
    }
    .z64d33related-thumb img {
        width: 100%;
        height: auto;
        max-height: 160px;
    }
}

@media (max-width: 480px) {
    .z64d33container {
        width: 94%;
    }
    .z64d33article-grid {
        grid-template-columns: 1fr;
    }
    .z64d33hero-stats {
        gap: 1rem;
    }
}

@media (min-width: 1100px) {
    .z64d33article-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}