/* ===== 设计变量 - 官网蓝金配色 ===== */
:root {
    --primary: #1a56db;
    --primary-dark: #1241a8;
    --secondary: #0891b2;
    --accent: #d97706;
    --accent-light: #f59e0b;
    --bg: #f0f4f8;
    --bg-white: #ffffff;
    --bg-gray: #eef2f6;
    --text: #475569;
    --text-dark: #0f172a;
    --text-light: #64748b;
    --border: #dde3ea;
    --border-light: #e8edf2;
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 8px 30px rgba(15, 23, 42, 0.1);
    --radius: 10px;
    --radius-lg: 14px;
    --header-h: 72px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    line-height: 1.7;
    color: var(--text);
    background: var(--bg);
    overflow-x: hidden;
}

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

a {
    color: inherit;
}

.container {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== 背景 ===== */
.site-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    background:
        radial-gradient(ellipse 80% 60% at 10% 0%, rgba(26, 86, 219, 0.06) 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 90% 100%, rgba(8, 145, 178, 0.05) 0%, transparent 55%),
        var(--bg);
    pointer-events: none;
}

/* ===== 头部导航 ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s ease;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    flex-shrink: 0;
}

.logo-mark {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 8px;
    position: relative;
}

.logo-mark::after {
    content: '';
    position: absolute;
    inset: 8px;
    border: 2px solid rgba(255, 255, 255, 0.8);
    border-radius: 3px;
}

.logo-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-dark);
    white-space: nowrap;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.nav-link {
    color: var(--text);
    text-decoration: none;
    font-size: 14px;
    padding: 8px 14px;
    border-radius: 6px;
    transition: all 0.25s ease;
    white-space: nowrap;
}

.nav-link:hover {
    color: var(--primary);
    background: rgba(26, 86, 219, 0.06);
}

.nav-link.z85a71this {
    color: var(--primary);
    background: rgba(26, 86, 219, 0.1);
    font-weight: 600;
}

.header.scroll-down {
    transform: translateY(-100%);
}

.header.scroll-up {
    transform: translateY(0);
}


.mobile-menu {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 6px;
}

.mobile-menu span {
    width: 24px;
    height: 2px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* ===== 按钮 ===== */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.25s ease;
    border: 2px solid transparent;
    text-align: center;
    cursor: pointer;
    line-height: 1.4;
}

.btn-accent {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.btn-accent:hover {
    background: var(--accent-light);
    border-color: var(--accent-light);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(217, 119, 6, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

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

.btn-white {
    background: #fff;
    color: var(--primary);
    border-color: #fff;
}

.btn-white:hover {
    background: rgba(255, 255, 255, 0.9);
}

.btn-lg {
    padding: 14px 32px;
    font-size: 16px;
}

/* ===== 首屏横幅 ===== */
.banner {
    padding: calc(var(--header-h) + 48px) 0 64px;
}

.banner-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.banner-label {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    background: rgba(26, 86, 219, 0.08);
    padding: 6px 14px;
    border-radius: 20px;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.banner-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--text-dark);
    line-height: 1.3;
    margin-bottom: 16px;
}

.banner-desc {
    font-size: 16px;
    color: var(--text-light);
    margin-bottom: 12px;
    line-height: 1.8;
}

.banner-intro {
    font-size: 15px;
    color: var(--text);
    margin-bottom: 28px;
    line-height: 1.8;
}

.banner-intro strong {
    color: var(--text-dark);
    font-weight: 600;
}

.banner-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 28px;
}

.banner-features {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.banner-features li {
    font-size: 13px;
    color: var(--text-light);
    padding-left: 18px;
    position: relative;
}

.banner-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 8px;
    height: 8px;
    background: var(--secondary);
    border-radius: 50%;
}

.banner-visual {
    position: relative;
}

.banner-img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    aspect-ratio: 4/3;
    object-fit: cover;
}

.banner-stat-card {
    position: absolute;
    bottom: -16px;
    left: -16px;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 24px;
    box-shadow: var(--shadow-md);
    text-align: center;
}

.banner-stat-card strong {
    display: block;
    font-size: 28px;
    color: var(--primary);
    line-height: 1.2;
}

.banner-stat-card span {
    font-size: 12px;
    color: var(--text-light);
}

/* ===== 通用板块 ===== */
.section {
    padding: 72px 0;
}

.section-white {
    background: var(--bg-white);
}

.section-gray {
    background: var(--bg-gray);
}

.section-head {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 48px;
}

.section-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--secondary);
    margin-bottom: 10px;
}

.section-head h2 {
    font-size: 32px;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 12px;
    line-height: 1.3;
}

.section-head p {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.8;
}

.section-head strong {
    color: var(--text-dark);
    font-weight: 600;
}

/* ===== 核心服务 ===== */
.service-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
    display: flex;
    flex-direction: column;
}

.section-white .service-card {
    background: var(--bg-gray);
}

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

.service-card-num {
    font-size: 13px;
    font-weight: 700;
    color: var(--primary);
    background: rgba(26, 86, 219, 0.08);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    margin-bottom: 16px;
}

.service-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
    line-height: 1.4;
}

.service-card p {
    font-size: 14px;
    color: var(--text);
    line-height: 1.8;
    flex: 1;
    margin-bottom: 16px;
}

.service-card p strong {
    color: var(--text-dark);
    font-weight: 600;
}

.service-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s;
}

.service-link:hover {
    color: var(--primary-dark);
}

/* ===== 接单流程 ===== */
.flow-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.flow-item {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px 20px;
    text-align: center;
    position: relative;
}

.flow-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    font-size: 20px;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.flow-item h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.flow-item p {
    font-size: 13px;
    color: var(--text);
    line-height: 1.7;
}

.flow-item p strong {
    color: var(--text-dark);
    font-weight: 600;
}

/* ===== 平台优势 ===== */
.advantage-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.advantage-item {
    background: var(--bg-gray);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px 20px;
    transition: box-shadow 0.3s ease;
}

.section-white .advantage-item {
    background: var(--bg-white);
}

.advantage-item:hover {
    box-shadow: var(--shadow-md);
}

.advantage-icon {
    width: 44px;
    height: 44px;
    background: rgba(26, 86, 219, 0.08);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    color: var(--primary);
}

.advantage-icon svg {
    width: 22px;
    height: 22px;
}

.advantage-item h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.advantage-item p {
    font-size: 13px;
    color: var(--text);
    line-height: 1.7;
}

.advantage-item p strong {
    font-weight: 600;
    color: var(--text-dark);
}

/* ===== 专业知识 ===== */
.knowledge-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 24px;
    align-items: start;
}

.knowledge-block {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 16px;
}

.knowledge-block:last-child {
    margin-bottom: 0;
}

.knowledge-block h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
    padding-left: 14px;
    border-left: 3px solid var(--primary);
}

.knowledge-block p {
    font-size: 14px;
    color: var(--text);
    line-height: 1.85;
}

.knowledge-block p strong {
    font-weight: 600;
    color: var(--text-dark);
}

.info-panel {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 22px;
    margin-bottom: 16px;
}

.info-panel:last-child {
    margin-bottom: 0;
}

.info-panel h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-light);
}

.info-panel ul {
    list-style: none;
}

.info-panel li {
    font-size: 13px;
    color: var(--text);
    padding: 7px 0;
    padding-left: 16px;
    position: relative;
    border-bottom: 1px solid var(--border-light);
}

.info-panel li:last-child {
    border-bottom: none;
}

.info-panel li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 14px;
    width: 6px;
    height: 6px;
    background: var(--secondary);
    border-radius: 50%;
}

/* ===== 用户反馈 ===== */
.review-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.review-card {
    background: var(--bg-gray);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    margin: 0;
    position: relative;
}

.section-white .review-card {
    background: var(--bg-white);
}

.review-card::before {
    content: '\201C';
    position: absolute;
    top: 12px;
    left: 20px;
    font-size: 48px;
    color: rgba(26, 86, 219, 0.12);
    line-height: 1;
    font-family: Georgia, serif;
}

.review-card p {
    font-size: 14px;
    color: var(--text);
    line-height: 1.85;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

.review-card p strong {
    font-weight: 600;
    color: var(--text-dark);
}

.review-card footer {
    padding-top: 16px;
    border-top: 1px solid var(--border-light);
}

.review-card footer strong {
    display: block;
    font-size: 15px;
    color: var(--text-dark);
    margin-bottom: 2px;
}

.review-card footer span {
    font-size: 13px;
    color: var(--text-light);
}

/* ===== FAQ ===== */
.faq-wrap {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 12px;
    overflow: hidden;
}

.faq-question {
    padding: 18px 22px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.faq-question h3 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-dark);
    line-height: 1.5;
    flex: 1;
}

.faq-toggle {
    font-size: 22px;
    color: var(--primary);
    flex-shrink: 0;
    transition: transform 0.3s ease;
    line-height: 1;
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease, padding 0.35s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 22px 18px;
}

.faq-answer p {
    font-size: 14px;
    color: var(--text);
    line-height: 1.85;
}

.faq-answer p strong {
    font-weight: 600;
    color: var(--text-dark);
}

/* ===== CTA ===== */
.section-cta {
    padding: 64px 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

.cta-box {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    flex-wrap: wrap;
}

.cta-text h2 {
    font-size: 26px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 10px;
    line-height: 1.4;
}

.cta-text h2 strong {
    font-weight: 800;
}

.cta-text p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.8;
    max-width: 560px;
}

.cta-text p strong {
    color: #fff;
    font-weight: 600;
}

.cta-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    flex-shrink: 0;
}

/* ===== 首页文章 ===== */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
}

.article-card {
    background: var(--bg-gray);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.section-white .article-card {
    background: var(--bg-white);
}

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

.article-card-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.article-card-thumb {
    width: 100%;
    height: 130px;
    overflow: hidden;
    background: var(--border-light);
}

.article-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.article-card:hover .article-card-thumb img {
    transform: scale(1.05);
}

.article-card-body {
    padding: 14px;
}

.article-card-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-dark);
    line-height: 1.5;
    margin-bottom: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-card-date {
    font-size: 11px;
    color: var(--text-light);
}

/* ===== 页脚 ===== */
.footer {
    background: var(--text-dark);
    padding: 56px 0 24px;
    color: rgba(255, 255, 255, 0.7);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-bottom: 36px;
}

.footer-col h3 {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
}

.footer-col ul {
    list-style: none;
}

.footer-col li {
    margin-bottom: 8px;
}

.footer-col a {
    color: rgba(255, 255, 255, 0.65);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}

.footer-col a:hover {
    color: #fff;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 4px;
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
}

.footer-bottom a:hover {
    color: #fff;
}

/* ===== 内容页 & 列表页 ===== */
.breadcrumb-wrap {
    padding: calc(var(--header-h) + 16px) 0 0;
    background: var(--bg-white);
    border-bottom: 1px solid var(--border);
}

.breadcrumb {
    padding: 14px 0;
    font-size: 13px;
    color: var(--text-light);
}

.breadcrumb a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.2s;
}

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

.breadcrumb-sep {
    margin: 0 8px;
    color: var(--border);
}

.breadcrumb-current {
    color: var(--primary);
    font-weight: 500;
}

.page-content {
    padding: 32px 0 64px;
}

.page-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 24px;
    align-items: start;
}

.main-content {
    min-width: 0;
}

/* 内容页 */
.article-detail {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
    margin-bottom: 24px;
}

.article-header {
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-light);
}

.article-title {
    font-size: 26px;
    font-weight: 800;
    color: var(--text-dark);
    line-height: 1.4;
    margin-bottom: 14px;
}

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

.article-meta a {
    color: var(--primary);
    text-decoration: none;
}

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

.article-thumb {
    margin-bottom: 24px;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border-light);
}

.article-thumb img {
    width: 100%;
    height: auto;
}

.article-body {
    color: var(--text);
    font-size: 15px;
    line-height: 1.85;
    word-break: break-word;
}

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

.article-body p {
    margin-bottom: 14px;
}

.z85a71diyfield {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-light);
    color: var(--text);
    font-size: 14px;
}

.article-gallery-item {
    margin: 14px 0;
    text-align: center;
}

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

.gallery-desc {
    display: block;
    margin-top: 8px;
    font-size: 13px;
    color: var(--text-light);
}

.z85a71meta-tags {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 24px 0 0;
    padding: 20px 0 0;
    border-top: 1px solid var(--border-light);
}

.z85a71tagitem a {
    display: inline-block;
    padding: 5px 14px;
    background: rgba(26, 86, 219, 0.06);
    color: var(--primary);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 12px;
    text-decoration: none;
    transition: all 0.2s;
}

.z85a71tagitem a:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.clear {
    clear: both;
}

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

.article-nav-item {
    flex: 1;
    min-width: 0;
    font-size: 14px;
}

.article-nav-prev {
    text-align: left;
}

.article-nav-next {
    text-align: right;
}

.article-nav-item a {
    color: var(--primary);
    text-decoration: none;
    word-break: break-all;
}

.article-nav-item a:hover {
    text-decoration: underline;
}

/* 相关文章 */
.related-articles {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.section-header-left {
    text-align: left;
    margin-bottom: 20px;
}

.section-header-left h2 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
}

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

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

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

.related-link {
    display: flex;
    gap: 14px;
    padding: 14px 0;
    text-decoration: none;
}

.related-link:hover .related-title {
    color: var(--primary);
}

.related-thumb {
    flex-shrink: 0;
    width: 110px;
    height: 82px;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-light);
    background: var(--bg-gray);
}

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

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

.related-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 6px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    transition: color 0.2s;
}

.related-desc {
    font-size: 12px;
    color: var(--text-light);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 列表页 */
.list-header {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px 28px;
    margin-bottom: 20px;
}

.list-title {
    font-size: 26px;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.list-desc {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.7;
}

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

.article-list-item {
    display: flex;
    gap: 20px;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 18px;
    margin-bottom: 14px;
    transition: box-shadow 0.3s ease;
}

.article-list-item:hover {
    box-shadow: var(--shadow-md);
}

.list-item-thumb {
    flex-shrink: 0;
    width: 180px;
    height: 130px;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-light);
    background: var(--bg-gray);
}

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

.list-item-body {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.list-item-title {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.4;
}

.list-item-title a {
    color: var(--text-dark);
    text-decoration: none;
    transition: color 0.2s;
}

.list-item-title a:hover {
    color: var(--primary);
}

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

.list-item-meta a {
    color: var(--primary);
    text-decoration: none;
}

.list-item-intro {
    color: var(--text);
    font-size: 13px;
    line-height: 1.7;
    flex: 1;
}

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

.pagebar-inner {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 20px;
}

.pagebar-inner .pagelist,
.pagebar .pagelist,
.pagebar ul {
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 6px;
    margin: 0;
    padding: 0;
    width: 100%;
}

.pagebar .pagelist li,
.pagebar ul li {
    display: inline-block;
}

.pagebar .pagelist a,
.pagebar .pagelist span,
.pagebar ul a,
.pagebar ul span {
    display: inline-block;
    padding: 7px 14px;
    background: var(--bg-gray);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 6px;
    text-decoration: none;
    font-size: 13px;
    transition: all 0.2s;
    line-height: 1.4;
}

.pagebar .pagelist a:hover,
.pagebar ul a:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.pagebar .pagelist .thisclass,
.pagebar ul .thisclass {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* 侧栏 */
.sidebar {
    position: sticky;
    top: calc(var(--header-h) + 16px);
}

.sidebar-block {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 18px;
    overflow: hidden;
}

.sidebar-block-header {
    margin-bottom: 14px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-light);
}

.sidebar-block-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-dark);
}

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

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

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

.sidebar-link {
    display: flex;
    gap: 10px;
    padding: 10px 0;
    text-decoration: none;
}

.sidebar-link:hover .sidebar-title {
    color: var(--primary);
}

.sidebar-thumb {
    flex-shrink: 0;
    width: 72px;
    height: 54px;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--border-light);
    background: var(--bg-gray);
}

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

.sidebar-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.sidebar-title {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-dark);
    line-height: 1.45;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 3px;
    transition: color 0.2s;
}

.sidebar-date {
    font-size: 11px;
    color: var(--text-light);
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-light);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .banner-inner {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .banner-visual {
        order: -1;
        max-width: 520px;
        margin: 0 auto;
    }

    .banner-stat-card {
        bottom: -12px;
        left: auto;
        right: -8px;
    }

    .service-cards {
        grid-template-columns: 1fr;
    }

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

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

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

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

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

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

    .sidebar {
        position: static;
    }

    .list-item-thumb {
        width: 150px;
        height: 110px;
    }
}

@media (max-width: 768px) {
    :root {
        --header-h: 64px;
    }

    .container {
        padding: 0 16px;
    }

    .nav-links {
        display: none;
        position: fixed;
        top: var(--header-h);
        left: 0;
        width: 100%;
        height: calc(100vh - var(--header-h));
        background: rgba(255, 255, 255, 0.98);
        padding: 16px;
        flex-direction: column;
        align-items: stretch;
        gap: 6px;
        overflow-y: auto;
        border-top: 1px solid var(--border);
        box-shadow: var(--shadow-md);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-link {
        font-size: 15px;
        padding: 12px 16px;
        text-align: left;
        border: 1px solid var(--border-light);
        border-radius: 8px;
        white-space: normal;
    }

    .mobile-menu {
        display: flex;
    }

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

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

    .mobile-menu.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .banner {
        padding-top: calc(var(--header-h) + 32px);
        padding-bottom: 48px;
    }

    .banner-title {
        font-size: 26px;
    }

    .banner-actions {
        flex-direction: column;
    }

    .banner-actions .btn {
        width: 100%;
    }

    .banner-features {
        flex-direction: column;
        gap: 8px;
    }

    .section {
        padding: 48px 0;
    }

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

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

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

    .cta-box {
        flex-direction: column;
        text-align: center;
    }

    .cta-text p {
        max-width: 100%;
    }

    .cta-actions {
        width: 100%;
        flex-direction: column;
    }

    .cta-actions .btn {
        width: 100%;
    }

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

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

    .article-detail,
    .related-articles,
    .list-header {
        padding: 20px;
    }

    .article-title,
    .list-title {
        font-size: 22px;
    }

    .article-list-item {
        flex-direction: column;
    }

    .list-item-thumb {
        width: 100%;
        height: 160px;
    }

    .article-nav {
        flex-direction: column;
    }

    .article-nav-next {
        text-align: left;
    }

    .related-link {
        flex-direction: column;
    }

    .related-thumb {
        width: 100%;
        height: 140px;
    }

    .faq-question h3 {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .banner-title {
        font-size: 22px;
    }

    .banner-intro,
    .banner-desc {
        font-size: 14px;
    }

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

    .article-card-thumb {
        height: 160px;
    }

    .sidebar-thumb {
        width: 64px;
        height: 48px;
    }

    .sidebar-title {
        font-size: 12px;
    }

    .banner-stat-card {
        position: static;
        margin-top: 12px;
        display: inline-block;
    }
}