/* roulang page: index */
/* ============ 设计变量与基础 ============ */
:root {
    --primary-dark: #15539E;
    --primary: #1D72B8;
    --accent: #F07B2A;
    --bg-light: #F5F8FC;
    --card-bg: #FFFFFF;
    --dark-bg: #132C42;
    --text-main: #2D3748;
    --text-muted: #68788B;
    --border-light: #E5EDF5;
    --line-blue: #C3D4E4;
    --chip-bg: #E9F0F7;
    --radius-card: 14px;
    --radius-btn: 8px;
    --radius-pill: 999px;
    --shadow-card: 0 2px 8px rgba(21,83,158,0.06), 0 8px 24px rgba(21,83,158,0.08);
    --shadow-hover: 0 4px 12px rgba(21,83,158,0.10), 0 12px 32px rgba(21,83,158,0.14);
    --shadow-cta: 0 4px 10px rgba(29,114,184,0.25);
    --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
    --spacing-section: 96px;
    --spacing-section-sm: 56px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-main);
    font-size: 16px;
    line-height: 1.75;
    color: var(--text-main);
    background: var(--bg-light);
    overflow-x: hidden;
}

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

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
    text-underline-offset: 2px;
}

ul, ol {
    list-style: none;
}

button, input {
    font-family: inherit;
    font-size: inherit;
    border: none;
    background: none;
    outline: none;
}

.container {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: var(--spacing-section) 0;
}

.section-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 16px;
}

.section-header .section-title-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
}

.section-title {
    font-size: 32px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-main);
    letter-spacing: 0.02em;
}

.section-subtitle {
    margin-top: 8px;
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.7;
    max-width: 640px;
}

.section-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.section-link i {
    transition: transform 0.3s ease;
}

.section-link:hover i {
    transform: translateX(4px);
}

/* ============ 按钮 ============ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-btn);
    font-size: 15px;
    font-weight: 600;
    line-height: 1.5;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    border: 1px solid transparent;
    min-height: 44px;
}

.btn:focus-visible {
    outline: 2px solid rgba(29,114,184,0.30);
    outline-offset: 2px;
}

.btn-primary {
    background-color: var(--primary);
    color: #FFFFFF;
    box-shadow: var(--shadow-cta);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    color: #FFFFFF;
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(21,83,158,0.30);
    text-decoration: none;
}

.btn-outline {
    background-color: #FFFFFF;
    border-color: var(--line-blue);
    color: var(--primary);
}

.btn-outline:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    color: #FFFFFF;
    transform: translateY(-1px);
    text-decoration: none;
}

.btn-dark {
    background-color: #FFFFFF;
    color: var(--dark-bg);
}

.btn-dark:hover {
    background-color: var(--accent);
    color: #FFFFFF;
    transform: translateY(-1px);
    text-decoration: none;
}

.btn-lg {
    padding: 14px 36px;
    font-size: 16px;
}

.btn-sm {
    padding: 8px 20px;
    font-size: 14px;
    min-height: 38px;
}

/* ============ 标签 / 徽标 ============ */
.tag {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    font-size: 12px;
    font-weight: 600;
    line-height: 1.6;
}

.tag-blue {
    background-color: #E8F1FA;
    color: var(--primary);
}

.tag-orange {
    background-color: #FDF0E6;
    color: var(--accent);
}

.badge-new {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 12px;
    border-radius: var(--radius-pill);
    background-color: var(--accent);
    color: #FFFFFF;
    font-size: 12px;
    font-weight: 600;
}

/* ============ 顶栏导航 ============ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-light);
    transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
    box-shadow: 0 2px 12px rgba(21,83,158,0.06);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: 16px;
}

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

.logo:hover {
    text-decoration: none;
}

.logo-icon {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #FFFFFF;
    font-size: 17px;
    flex-shrink: 0;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.logo-text span {
    color: var(--primary);
}

.nav-chips {
    display: flex;
    align-items: center;
    gap: 6px;
    background-color: var(--chip-bg);
    padding: 4px;
    border-radius: var(--radius-pill);
    overflow-x: auto;
    scrollbar-width: none;
    flex-shrink: 0;
    max-width: calc(100vw - 320px);
}

.nav-chips::-webkit-scrollbar {
    display: none;
}

.chip {
    display: inline-flex;
    align-items: center;
    padding: 7px 18px;
    border-radius: var(--radius-pill);
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-dark);
    background: transparent;
    border: 1px solid transparent;
    white-space: nowrap;
    transition: var(--transition);
    text-decoration: none;
    min-height: 36px;
}

.chip:hover {
    border-color: var(--primary);
    color: var(--primary-dark);
    text-decoration: none;
    background: rgba(255,255,255,0.7);
}

.chip.active {
    background-color: var(--primary);
    color: #FFFFFF;
    border-color: var(--primary);
}

.chip.active:hover {
    background-color: var(--primary-dark);
    color: #FFFFFF;
}

.btn-header {
    padding: 9px 22px;
    font-size: 14px;
    min-height: 40px;
    flex-shrink: 0;
}

/* ============ Hero ============ */
.hero {
    position: relative;
    background: linear-gradient(135deg, #F0F6FC 0%, #EAF1F8 60%, #F5F8FC 100%);
    padding: 96px 0 0;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    opacity: 0.18;
    z-index: 0;
}

.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(255,255,255,0.35) 0%, rgba(255,255,255,0.65) 100%);
    z-index: 0;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-inner {
    display: grid;
    grid-template-columns: 55% 45%;
    gap: 48px;
    align-items: center;
    margin-bottom: 72px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 16px;
    border-radius: var(--radius-pill);
    background-color: rgba(21,83,158,0.08);
    color: var(--primary-dark);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 20px;
}

.hero-badge i {
    color: var(--accent);
}

.hero h1 {
    font-size: 40px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-main);
    margin-bottom: 20px;
    letter-spacing: 0.01em;
    border-left: 5px solid var(--accent);
    padding-left: 18px;
}

.hero-subtitle {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-muted);
    margin-bottom: 32px;
    max-width: 560px;
}

.hero-ctas {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-visual {
    position: relative;
}

.hero-visual .main-img {
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-hover);
    overflow: hidden;
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
}

.float-card {
    position: absolute;
    background: #FFFFFF;
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    padding: 14px 18px;
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 150px;
}

.float-card-1 {
    top: 20px;
    left: -20px;
}

.float-card-2 {
    bottom: 24px;
    right: -16px;
}

.float-card .fc-icon {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--chip-bg);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    flex-shrink: 0;
}

.float-card .fc-text {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.4;
}

.float-card .fc-text strong {
    display: block;
    font-size: 17px;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.3;
}

/* 统计条 */
.stats-bar {
    position: relative;
    z-index: 1;
    background: var(--card-bg);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    padding: 32px 40px;
    margin-bottom: -48px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.stat-item {
    text-align: center;
}

.stat-item .stat-num {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-dark);
    line-height: 1.2;
}

.stat-item .stat-num .plus {
    color: var(--accent);
}

.stat-item .stat-label {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 6px;
    line-height: 1.5;
}

/* ============ 三步上手 ============ */
.steps-section {
    padding-top: calc(var(--spacing-section) + 56px);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    position: relative;
}

.step-card {
    background: var(--card-bg);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    padding: 32px 28px;
    position: relative;
    transition: var(--transition);
    overflow: hidden;
}

.step-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
}

.step-num {
    position: absolute;
    top: 16px;
    right: 20px;
    font-size: 60px;
    font-weight: 700;
    color: rgba(21,83,158,0.10);
    line-height: 1;
    pointer-events: none;
}

.step-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--chip-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: var(--primary);
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

.step-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 10px;
    position: relative;
    z-index: 1;
}

.step-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.8;
    position: relative;
    z-index: 1;
}

/* ============ 内容分类 ============ */
.channels-section {
    background: var(--card-bg);
}

.channels-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.channel-card {
    border-radius: var(--radius-card);
    overflow: hidden;
    background: var(--bg-light);
    border: 1px solid var(--border-light);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    min-height: 100%;
}

.channel-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
}

.channel-card .channel-img {
    width: 100%;
    height: 140px;
    object-fit: cover;
}

.channel-card .channel-body {
    padding: 20px 22px 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.channel-card .channel-body h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 8px;
}

.channel-card .channel-body p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.75;
    flex: 1;
}

.channel-card .channel-link {
    margin-top: 14px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

/* ============ 案例 ============ */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.case-card {
    background: var(--card-bg);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
}

.case-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
    text-decoration: none;
    color: inherit;
}

.case-card .case-img-wrap {
    overflow: hidden;
    aspect-ratio: 16/9;
    position: relative;
}

.case-card .case-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.case-card:hover .case-img-wrap img {
    transform: scale(1.04);
}

.case-card .case-body {
    padding: 24px 24px 26px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.case-card .case-body .tag {
    align-self: flex-start;
    margin-bottom: 12px;
}

.case-card .case-body h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 8px;
    line-height: 1.4;
}

.case-card .case-body p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.case-metric {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-light);
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.case-metric .metric-num {
    font-size: 22px;
    font-weight: 700;
    color: var(--accent);
}

.case-metric .metric-label {
    font-size: 13px;
    color: var(--text-muted);
}

/* ============ FAQ ============ */
.faq-section {
    background: var(--card-bg);
}

.faq-layout {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 48px;
    align-items: start;
}

.faq-intro .section-title {
    margin-bottom: 16px;
}

.faq-intro p {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 24px;
}

.faq-list .accordion-item {
    background: var(--bg-light);
    border-radius: var(--radius-card);
    margin-bottom: 14px;
    overflow: hidden;
    border: 1px solid transparent;
    transition: var(--transition);
}

.faq-list .accordion-item.is-active {
    background: var(--card-bg);
    border-color: var(--border-light);
    box-shadow: var(--shadow-card);
}

.faq-list .accordion-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 20px 24px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-main);
    margin: 0;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.faq-list .accordion-title:hover {
    color: var(--primary);
    text-decoration: none;
}

.faq-list .accordion-item.is-active .accordion-title {
    color: var(--primary);
    font-weight: 700;
}

.faq-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--chip-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: var(--primary);
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

.faq-list .accordion-item.is-active .faq-icon {
    transform: rotate(45deg);
}

.faq-list .accordion-content {
    padding: 0 24px 22px;
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.8;
    background: #F8FAFD;
    border-radius: 8px;
    margin: 0 12px 12px;
}

.faq-list .accordion-content p {
    margin: 0;
}

/* ============ 资讯列表 ============ */
.news-section {
    background: var(--bg-light);
}

.news-header {
    display: flex;
    align-items: center;
    gap: 12px;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.news-card {
    display: flex;
    gap: 20px;
    background: var(--card-bg);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    padding: 18px;
    transition: var(--transition);
    text-decoration: none;
    color: inherit;
    align-items: flex-start;
}

.news-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
    text-decoration: none;
    color: inherit;
}

.news-thumb {
    width: 120px;
    height: 90px;
    flex-shrink: 0;
    border-radius: 10px;
    overflow: hidden;
    background: var(--chip-bg);
}

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

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

.news-body h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
    line-height: 1.5;
    margin-bottom: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-body p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 8px;
}

.news-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.news-meta time {
    font-size: 12px;
    color: var(--text-muted);
    white-space: nowrap;
}

.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 40px 24px;
    background: var(--card-bg);
    border-radius: var(--radius-card);
    border: 1px dashed var(--line-blue);
    color: var(--text-muted);
    font-size: 15px;
}

/* ============ CTA 横幅 ============ */
.cta-banner {
    background-color: var(--dark-bg);
    position: relative;
    overflow: hidden;
    padding: 88px 0;
    text-align: center;
}

.cta-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url('/assets/images/backpic/back-2.webp');
    background-size: cover;
    background-position: center;
    opacity: 0.06;
}

.cta-banner::after {
    content: '';
    position: absolute;
    bottom: -40px;
    right: -30px;
    width: 260px;
    height: 260px;
    border: 2px solid rgba(255,255,255,0.06);
    border-radius: 50%;
}

.cta-banner .container {
    position: relative;
    z-index: 2;
}

.cta-banner h2 {
    font-size: 32px;
    font-weight: 700;
    color: #FFFFFF;
    margin-bottom: 16px;
    line-height: 1.4;
}

.cta-banner h2 span {
    color: var(--accent);
}

.cta-banner p {
    font-size: 16px;
    color: #B8CAD8;
    max-width: 640px;
    margin: 0 auto 36px;
    line-height: 1.8;
}

.cta-banner .btn-primary {
    padding: 14px 40px;
    font-size: 16px;
}

/* ============ 页脚 ============ */
.site-footer {
    background-color: var(--dark-bg);
    padding: 64px 0 0;
    color: #A7BDD0;
    font-size: 14px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 48px;
}

.footer-brand .logo-text {
    color: #FFFFFF;
    font-size: 20px;
}

.footer-brand .logo-text span {
    color: var(--accent);
}

.footer-brand .foot-desc {
    margin-top: 16px;
    line-height: 1.8;
    max-width: 300px;
    color: #A7BDD0;
}

.footer-social {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

.footer-social a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #A7BDD0;
    font-size: 14px;
    transition: var(--transition);
    text-decoration: none;
}

.footer-social a:hover {
    background: var(--primary);
    color: #FFFFFF;
    transform: translateY(-2px);
}

.footer-col h4 {
    font-size: 16px;
    font-weight: 600;
    color: #FFFFFF;
    margin-bottom: 18px;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    color: #A7BDD0;
    font-size: 14px;
    text-decoration: none;
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: #FFFFFF;
    padding-left: 4px;
}

.footer-contact li {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    margin-bottom: 14px;
    line-height: 1.7;
}

.footer-contact li i {
    color: var(--primary);
    margin-top: 4px;
    width: 16px;
    text-align: center;
    flex-shrink: 0;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.10);
    padding: 20px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
    color: #7E95A8;
}

.footer-bottom a {
    color: #7E95A8;
    text-decoration: none;
    margin: 0 6px;
}

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

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

    .hero h1 {
        font-size: 32px;
    }

    .steps-grid {
        gap: 20px;
    }

    .step-card {
        padding: 24px 20px;
    }

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

    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .faq-layout {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media screen and (max-width: 768px) {
    .section {
        padding: var(--spacing-section-sm) 0;
    }

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

    .hero {
        padding: 56px 0 0;
    }

    .hero-inner {
        grid-template-columns: 1fr;
        gap: 36px;
        margin-bottom: 56px;
    }

    .hero-visual {
        order: 2;
    }

    .hero-copy {
        order: 1;
    }

    .float-card-1 {
        left: 12px;
    }

    .float-card-2 {
        right: 12px;
    }

    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
        padding: 28px 24px;
        margin-bottom: -40px;
    }

    .steps-section {
        padding-top: calc(var(--spacing-section-sm) + 40px);
    }

    .steps-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

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

    .news-card {
        flex-direction: column;
    }

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

    .case-card .case-body {
        padding: 20px;
    }

    .cta-banner {
        padding: 64px 0;
    }

    .cta-banner h2 {
        font-size: 26px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
        padding: 20px 16px;
    }
}

@media screen and (max-width: 640px) {
    .nav-chips {
        order: 3;
        width: 100%;
        max-width: 100%;
        justify-content: flex-start;
        border-radius: var(--radius-pill);
        margin-top: 4px;
        padding: 4px;
        overflow-x: auto;
    }

    .header-inner {
        flex-wrap: wrap;
        height: auto;
        padding: 12px 0;
        gap: 8px;
    }

    .btn-header {
        margin-left: auto;
    }

    .logo-text {
        font-size: 17px;
    }

    .hero h1 {
        font-size: 27px;
        padding-left: 14px;
    }

    .hero-subtitle {
        font-size: 15px;
    }

    .hero-ctas .btn {
        width: 100%;
    }

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

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

    .stat-item .stat-num {
        font-size: 24px;
    }

    .section-link {
        display: none;
    }

    .faq-list .accordion-title {
        padding: 16px 18px;
        font-size: 14px;
    }

    .faq-list .accordion-content {
        padding: 0 16px 18px;
    }

    .news-body h3 {
        font-size: 15px;
    }

    .logo-icon {
        width: 34px;
        height: 34px;
        font-size: 15px;
    }
}

@media screen and (max-width: 400px) {
    .container {
        padding: 0 16px;
    }

    .hero h1 {
        font-size: 23px;
    }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #15539E;
            --color-primary-light: #1D72B8;
            --color-accent: #F07B2A;
            --color-bg: #F5F8FC;
            --color-card: #FFFFFF;
            --color-footer-bg: #132C42;
            --color-text: #2D3748;
            --color-text-weak: #68788B;
            --color-border: #C3D4E4;
            --color-divider: #E5EDF5;
            --color-chip-bg: #E9F0F7;
            --radius-card: 14px;
            --radius-btn: 8px;
            --radius-chip: 999px;
            --shadow-card: 0 2px 8px rgba(21, 83, 158, 0.06), 0 8px 24px rgba(21, 83, 158, 0.08);
            --shadow-hover: 0 4px 12px rgba(21, 83, 158, 0.10), 0 12px 32px rgba(21, 83, 158, 0.14);
            --shadow-cta: 0 4px 10px rgba(29, 114, 184, 0.25);
            --space-section-desktop: 96px;
            --space-section-mobile: 56px;
            --container-max: 1200px;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

        /* ===== 基础 reset & base ===== */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.6;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
            height: auto;
        }
        a {
            color: var(--color-primary-light);
            text-decoration: none;
            transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
        }
        a:hover {
            color: var(--color-primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        ul, ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text);
            margin: 0 0 0.5em;
        }
        p {
            margin-bottom: 1em;
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: var(--space-section-desktop) 0;
        }
        .section-tight {
            padding: 48px 0;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            padding: 12px 26px;
            border: 1px solid transparent;
            cursor: pointer;
            transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
            line-height: 1.4;
            text-align: center;
            min-height: 44px;
            font-size: 15px;
        }
        .btn:focus-visible {
            outline: 2px solid rgba(29, 114, 184, 0.3);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--color-primary-light);
            color: #FFFFFF;
            box-shadow: var(--shadow-cta);
        }
        .btn-primary:hover {
            background: var(--color-primary);
            color: #FFFFFF;
            text-decoration: none;
            transform: translateY(-1px);
            box-shadow: var(--shadow-hover);
        }
        .btn-secondary {
            background: transparent;
            color: var(--color-primary-light);
            border-color: var(--color-border);
        }
        .btn-secondary:hover {
            background: var(--color-primary);
            color: #FFFFFF;
            border-color: var(--color-primary);
            text-decoration: none;
            transform: translateY(-1px);
        }
        .btn-lg {
            padding: 14px 34px;
            font-size: 16px;
        }
        .btn:active {
            transform: translateY(0) scale(0.98);
        }

        /* ===== 标签 chip ===== */
        .tag-chip {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-chip);
            background: var(--color-chip-bg);
            color: var(--color-primary);
            font-size: 13px;
            font-weight: 500;
            line-height: 1.5;
            white-space: nowrap;
        }
        .tag-chip--orange {
            background: rgba(240, 123, 42, 0.12);
            color: var(--color-accent);
        }
        .tag-chip--white {
            background: rgba(255, 255, 255, 0.15);
            color: #FFFFFF;
        }

        /* ===== 站点头部导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--color-divider);
            transition: box-shadow 0.3s ease, background 0.3s ease;
            height: 68px;
            display: flex;
            align-items: center;
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.96);
            box-shadow: 0 2px 12px rgba(21, 83, 158, 0.08);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            color: var(--color-text);
        }
        .logo:hover {
            text-decoration: none;
            opacity: 0.9;
        }
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--color-primary);
            color: #FFFFFF;
            font-size: 18px;
        }
        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.2;
        }
        .logo-text span {
            color: var(--color-primary-light);
        }

        /* 分段标签导航 */
        .nav-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            background: var(--color-chip-bg);
            padding: 4px;
            border-radius: var(--radius-chip);
        }
        .chip {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 8px 20px;
            border-radius: var(--radius-chip);
            font-size: 14px;
            font-weight: 500;
            color: var(--color-primary);
            white-space: nowrap;
            border: 1px solid transparent;
            transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
            min-height: 36px;
            line-height: 1.2;
        }
        .chip:hover {
            text-decoration: none;
            border-color: var(--color-primary);
            background: rgba(255, 255, 255, 0.6);
        }
        .chip.active {
            background: var(--color-primary-light);
            color: #FFFFFF;
            box-shadow: 0 2px 6px rgba(29, 114, 184, 0.3);
        }
        .chip.active:hover {
            border-color: transparent;
            background: var(--color-primary);
        }
        .btn-header {
            flex-shrink: 0;
            padding: 9px 22px;
            min-height: 40px;
            font-size: 14px;
        }

        /* ===== 分类页 Hero ===== */
        .category-hero {
            position: relative;
            margin-top: 68px;
            padding: 96px 0;
            background: linear-gradient(to right, rgba(245, 248, 252, 0.97) 0%, rgba(245, 248, 252, 0.90) 55%, rgba(233, 240, 247, 0.85) 100%);
        }
        .category-hero .bg-pattern {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            z-index: 0;
        }
        .category-hero::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(245, 248, 252, 0.55);
            z-index: 1;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(240, 123, 42, 0.12);
            color: var(--color-accent);
            padding: 6px 16px;
            border-radius: var(--radius-chip);
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 20px;
        }
        .category-hero h1 {
            font-size: 42px;
            line-height: 1.25;
            margin-bottom: 18px;
            color: var(--color-text);
            border-left: 5px solid var(--color-accent);
            padding-left: 20px;
        }
        .category-hero .hero-desc {
            font-size: 17px;
            color: var(--color-text-weak);
            max-width: 680px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-stats {
            margin-top: 56px;
            display: flex;
            flex-wrap: wrap;
            gap: 32px 48px;
        }
        .hero-stat-item {
            flex: 0 0 auto;
        }
        .hero-stat-num {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-primary-light);
            line-height: 1.2;
            display: flex;
            align-items: baseline;
        }
        .hero-stat-num .unit {
            font-size: 16px;
            font-weight: 500;
            color: var(--color-accent);
            margin-left: 4px;
        }
        .hero-stat-label {
            font-size: 14px;
            color: var(--color-text-weak);
            margin-top: 4px;
        }

        /* ===== 板块标题 ===== */
        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-header .section-tag {
            display: inline-block;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary-light);
            background: var(--color-chip-bg);
            padding: 6px 18px;
            border-radius: var(--radius-chip);
            margin-bottom: 16px;
        }
        .section-header h2 {
            font-size: 34px;
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .section-header .section-sub {
            font-size: 16px;
            color: var(--color-text-weak);
            max-width: 620px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-header--left {
            text-align: left;
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .section-header--left .section-sub {
            margin: 0;
        }
        .section-header--left h2 {
            margin-bottom: 8px;
        }
        .section-header--left .text-left-wrap {
            max-width: 600px;
        }

        /* ===== 卖点/核心服务卡片 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 48px;
        }
        .feature-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.25s ease, transform 0.25s ease;
            border: 1px solid rgba(229, 237, 245, 0.6);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--color-primary-light);
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon {
            width: 54px;
            height: 54px;
            border-radius: 50%;
            background: var(--color-chip-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--color-primary-light);
            margin-bottom: 20px;
            transition: background 0.3s ease, color 0.3s ease, transform 0.3s ease;
        }
        .feature-card:hover .feature-icon {
            background: var(--color-primary-light);
            color: #FFFFFF;
            transform: scale(1.05);
        }
        .feature-card h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--color-text-weak);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== 资讯内容卡片（区别于首页案例） ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .news-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.25s ease, transform 0.25s ease;
            display: flex;
            flex-direction: column;
            border: 1px solid rgba(229, 237, 245, 0.5);
            height: 100%;
        }
        .news-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .news-cover {
            display: block;
            width: 100%;
            height: 190px;
            overflow: hidden;
            position: relative;
            background: var(--color-chip-bg);
        }
        .news-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .news-card:hover .news-cover img {
            transform: scale(1.05);
        }
        .news-tag-top {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            background: rgba(255, 255, 255, 0.92);
            color: var(--color-primary);
            font-size: 12px;
            padding: 4px 12px;
            border-radius: var(--radius-chip);
            font-weight: 600;
            box-shadow: 0 2px 6px rgba(21, 83, 158, 0.12);
        }
        .news-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .news-body h3 {
            font-size: 18px;
            line-height: 1.45;
            margin-bottom: 10px;
        }
        .news-body h3 a {
            color: var(--color-text);
        }
        .news-body h3 a:hover {
            color: var(--color-primary-light);
            text-decoration: none;
        }
        .news-excerpt {
            font-size: 14px;
            color: var(--color-text-weak);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 16px;
            flex: 1;
        }
        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--color-divider);
            padding-top: 14px;
        }
        .news-date {
            font-size: 13px;
            color: var(--color-text-weak);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .news-date i {
            font-size: 12px;
            color: var(--color-primary-light);
        }
        .news-more-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary-light);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .news-more-link:hover {
            text-decoration: none;
            color: var(--color-primary);
        }
        .news-more-link i {
            font-size: 12px;
            transition: transform 0.2s ease;
        }
        .news-more-link:hover i {
            transform: translateX(3px);
        }

        /* ===== 分类快速入口 ===== */
        .channel-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .channel-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.25s ease, transform 0.25s ease;
            text-align: center;
            border: 1px solid rgba(229, 237, 245, 0.6);
        }
        .channel-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .channel-card .icon-circle {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--color-chip-bg);
            color: var(--color-primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin: 0 auto 20px;
            transition: background 0.3s ease, color 0.3s ease;
        }
        .channel-card:hover .icon-circle {
            background: var(--color-accent);
            color: #FFFFFF;
        }
        .channel-card h3 {
            font-size: 19px;
            margin-bottom: 10px;
        }
        .channel-card p {
            font-size: 14px;
            color: var(--color-text-weak);
            line-height: 1.7;
            margin-bottom: 18px;
        }
        .channel-card .channel-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-primary-light);
        }
        .channel-card .channel-link i {
            font-size: 13px;
            transition: transform 0.2s ease;
        }
        .channel-card .channel-link:hover i {
            transform: translateX(4px);
        }

        /* ===== 特色数据展示 ===== */
        .data-snapshot {
            background: var(--color-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 40px;
            margin-top: 56px;
            border: 1px solid rgba(229, 237, 245, 0.5);
        }
        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .data-item .data-number {
            font-size: 40px;
            font-weight: 700;
            color: var(--color-primary-light);
            line-height: 1.3;
        }
        .data-item .data-number .plus {
            color: var(--color-accent);
            font-size: 26px;
            font-weight: 600;
            vertical-align: super;
            margin-left: 2px;
        }
        .data-item .data-label {
            font-size: 14px;
            color: var(--color-text-weak);
            margin-top: 6px;
        }

        /* ===== 指南 / 流程板块 ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .guide-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(229, 237, 245, 0.5);
            position: relative;
            overflow: hidden;
            transition: box-shadow 0.25s ease, transform 0.25s ease;
        }
        .guide-card::after {
            content: attr(data-step);
            position: absolute;
            right: 8px;
            top: -16px;
            font-size: 88px;
            font-weight: 700;
            color: rgba(29, 114, 184, 0.08);
            line-height: 1;
            pointer-events: none;
        }
        .guide-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .guide-card .guide-step {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: var(--color-chip-bg);
            color: var(--color-primary-light);
            font-weight: 700;
            font-size: 14px;
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }
        .guide-card h3 {
            font-size: 17px;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }
        .guide-card p {
            font-size: 14px;
            color: var(--color-text-weak);
            line-height: 1.7;
            margin-bottom: 0;
            position: relative;
            z-index: 1;
        }

        /* ===== 使用场景 / 覆盖人群 ===== */
        .scenario-wrap {
            background: var(--color-footer-bg);
            border-radius: var(--radius-card);
            padding: 60px;
            color: #FFFFFF;
            position: relative;
            overflow: hidden;
        }
        .scenario-wrap::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('/assets/images/backpic/back-3.png') no-repeat center / cover;
            opacity: 0.08;
            z-index: 0;
        }
        .scenario-wrap .container {
            position: relative;
            z-index: 1;
        }
        .scenario-wrap h2 {
            color: #FFFFFF;
            font-size: 32px;
        }
        .scenario-wrap .section-sub {
            color: rgba(255, 255, 255, 0.7);
        }
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 48px;
        }
        .scenario-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            transition: background 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
            backdrop-filter: blur(4px);
        }
        .scenario-item:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-4px);
        }
        .scenario-item .scenario-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(240, 123, 42, 0.2);
            color: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 16px;
        }
        .scenario-item h3 {
            color: #FFFFFF;
            font-size: 17px;
            margin-bottom: 8px;
        }
        .scenario-item p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--color-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            margin-bottom: 16px;
            border: 1px solid rgba(229, 237, 245, 0.6);
            overflow: hidden;
            transition: box-shadow 0.25s ease;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-hover);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 22px 24px;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            border-radius: var(--radius-card);
        }
        .faq-question:hover {
            background: #F8FAFD;
        }
        .faq-question.active {
            color: var(--color-primary-light);
            font-weight: 700;
        }
        .faq-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-chip-bg);
            color: var(--color-primary-light);
            font-size: 16px;
            transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
            flex-shrink: 0;
            line-height: 1;
        }
        .faq-question.active .faq-icon {
            transform: rotate(45deg);
            background: var(--color-primary-light);
            color: #FFFFFF;
        }
        .faq-answer {
            padding: 0 24px;
            background: #F8FAFD;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
        }
        .faq-answer.open {
            padding: 8px 24px 24px;
            max-height: 420px;
        }
        .faq-answer p {
            font-size: 15px;
            color: var(--color-text-weak);
            line-height: 1.8;
            margin-bottom: 0;
            padding-top: 8px;
            border-top: 1px dashed var(--color-divider);
        }

        /* ===== CTA 横幅 ===== */
        .cta-banner {
            background: var(--color-footer-bg);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-banner::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('/assets/images/backpic/back-2.webp') no-repeat center / cover;
            opacity: 0.04;
        }
        .cta-banner::after {
            content: "";
            position: absolute;
            bottom: -30%;
            right: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            color: #FFFFFF;
            font-size: 32px;
            margin-bottom: 14px;
        }
        .cta-inner p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 16px;
            line-height: 1.7;
            margin-bottom: 32px;
        }
        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .cta-banner .btn-primary {
            background: var(--color-accent);
            box-shadow: 0 4px 14px rgba(240, 123, 42, 0.3);
        }
        .cta-banner .btn-primary:hover {
            background: #e06a1a;
        }
        .cta-banner .btn-secondary {
            border-color: rgba(255, 255, 255, 0.5);
            color: #FFFFFF;
        }
        .cta-banner .btn-secondary:hover {
            background: #FFFFFF;
            color: var(--color-primary);
            border-color: #FFFFFF;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--color-footer-bg);
            padding: 72px 0 0;
            color: #A7BDD0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        }
        .footer-brand .logo {
            margin-bottom: 18px;
        }
        .footer-brand .logo-text {
            color: #FFFFFF;
            font-size: 22px;
        }
        .footer-brand .logo-text span {
            color: #7DADDD;
        }
        .footer-brand .logo-icon {
            background: rgba(255, 255, 255, 0.12);
            color: #FFFFFF;
        }
        .foot-desc {
            font-size: 14px;
            line-height: 1.8;
            color: #A7BDD0;
            margin-bottom: 22px;
            max-width: 300px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.14);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #A7BDD0;
            font-size: 15px;
            transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
        }
        .footer-social a:hover {
            background: var(--color-primary-light);
            color: #FFFFFF;
            border-color: var(--color-primary-light);
            text-decoration: none;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 22px;
        }
        .footer-col ul li {
            margin-bottom: 12px;
        }
        .footer-col ul li a {
            color: #A7BDD0;
            font-size: 14px;
            transition: color 0.2s ease, padding-left 0.2s ease;
        }
        .footer-col ul li a:hover {
            color: #FFFFFF;
            padding-left: 4px;
            text-decoration: none;
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: #A7BDD0;
            line-height: 1.6;
        }
        .footer-contact li i {
            width: 18px;
            text-align: center;
            color: var(--color-accent);
            font-size: 14px;
        }
        .footer-bottom {
            padding: 24px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-bottom a:hover {
            color: #FFFFFF;
        }

        /* ===== 内容版面通用增强 ===== */
        .stat-strip {
            background: var(--color-card);
            border-radius: var(--radius-card);
            padding: 36px 40px;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(229, 237, 245, 0.5);
            display: flex;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            margin-top: 48px;
        }
        .stat-strip-item {
            text-align: center;
            flex: 1 1 140px;
        }
        .stat-strip-num {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-primary-light);
            line-height: 1.2;
        }
        .stat-strip-label {
            font-size: 14px;
            color: var(--color-text-weak);
            margin-top: 6px;
        }

        /* ===== 分类正文区 ===== */
        .main-content {
            padding-bottom: 0;
        }

        /* ===== 响应式 ===== */
        @media screen and (max-width: 1024px) {
            .feature-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .channel-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
            .scenario-wrap {
                padding: 48px 36px;
            }
        }

        @media screen and (max-width: 768px) {
            .section {
                padding: var(--space-section-mobile) 0;
            }
            .category-hero {
                padding: 72px 0;
                margin-top: 60px;
            }
            .category-hero h1 {
                font-size: 32px;
                padding-left: 16px;
            }
            .category-hero .hero-desc {
                font-size: 15px;
            }
            .section-header h2 {
                font-size: 27px;
            }
            .header-inner {
                flex-wrap: nowrap;
            }
            .nav-chips {
                order: 3;
                width: 100%;
                justify-content: flex-start;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                border-radius: var(--radius-chip);
                margin-top: 8px;
                padding: 4px;
                scrollbar-width: thin;
            }
            .nav-chips::-webkit-scrollbar {
                height: 2px;
            }
            .nav-chips::-webkit-scrollbar-thumb {
                background: #C3D4E4;
                border-radius: 999px;
            }
            .header-inner {
                flex-wrap: wrap;
                gap: 8px;
                padding: 8px 0;
            }
            .site-header {
                height: auto;
                min-height: 60px;
            }
            .btn-header {
                margin-left: auto;
            }
            .feature-grid,
            .news-grid,
            .channel-grid,
            .guide-grid,
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .data-grid {
                grid-template-columns: 1fr 1fr;
                row-gap: 32px;
            }
            .scenario-wrap {
                padding: 40px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .stat-strip {
                flex-direction: column;
                gap: 20px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .cta-actions .btn {
                width: 100%;
            }
        }

        @media screen and (max-width: 640px) {
            body {
                font-size: 15px;
            }
            .container {
                padding: 0 18px;
            }
            .category-hero {
                padding: 56px 0;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .hero-stats {
                gap: 20px 28px;
            }
            .hero-stat-num {
                font-size: 30px;
            }
            .logo-text {
                font-size: 18px;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 16px;
            }
            .chip {
                padding: 7px 16px;
                font-size: 13px;
            }
            .btn-header {
                padding: 8px 16px;
                font-size: 13px;
            }
            .feature-grid,
            .news-grid,
            .channel-grid,
            .guide-grid,
            .scenario-grid {
                gap: 18px;
            }
            .news-cover {
                height: 200px;
            }
            .scenario-wrap {
                padding: 36px 20px;
            }
            .scenario-item {
                padding: 22px 18px;
            }
            .section-header {
                margin-bottom: 40px;
            }
            .cta-inner h2 {
                font-size: 26px;
            }
            .data-item .data-number {
                font-size: 32px;
            }
        }
        @media screen and (min-width: 641px) and (max-width: 1024px) {
            .btn-header {
                margin-left: 0;
            }
        }
        @media screen and (min-width: 1025px) {
            .header-inner {
                min-height: 68px;
            }
        }

/* roulang page: article */
:root{
    --primary-deep:#15539E;
    --primary:#1D72B8;
    --accent:#F07B2A;
    --bg:#F5F8FC;
    --card-bg:#FFFFFF;
    --dark:#132C42;
    --text:#2D3748;
    --text-weak:#68788B;
    --border:#E5EDF5;
    --line:#C3D4E4;
    --radius-card:14px;
    --radius-btn:8px;
    --shadow-card:0 2px 8px rgba(21,83,158,0.06),0 8px 24px rgba(21,83,158,0.08);
    --shadow-hover:0 4px 12px rgba(21,83,158,0.10),0 12px 32px rgba(21,83,158,0.14);
    --shadow-cta:0 4px 10px rgba(29,114,184,0.25);
    --font-sans:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
    --section-pad:96px;
    --section-pad-mobile:56px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
    font-family:var(--font-sans);
    background:var(--bg);
    color:var(--text);
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
    margin:0;
    padding:0;
}
img{max-width:100%;height:auto;display:block;}
a{text-decoration:none;color:var(--primary);transition:color 0.25s ease;}
a:hover{color:var(--primary-deep);}
button,input,select,textarea{font-family:inherit;}
::selection{background:rgba(29,114,184,0.18);color:var(--primary-deep);}
.container{
    max-width:1200px;
    margin:0 auto;
    padding:0 24px;
    width:100%;
}
.btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    padding:12px 28px;
    border-radius:var(--radius-btn);
    font-size:15px;
    font-weight:600;
    line-height:1.4;
    text-decoration:none;
    cursor:pointer;
    border:none;
    transition:all 0.3s ease;
    white-space:nowrap;
}
.btn:focus-visible{
    outline:2px solid rgba(29,114,184,0.35);
    outline-offset:2px;
}
.btn-primary{
    background:var(--primary);
    color:#fff;
    box-shadow:var(--shadow-cta);
}
.btn-primary:hover{
    background:var(--primary-deep);
    color:#fff;
    transform:translateY(-1px);
    box-shadow:0 6px 16px rgba(21,83,158,0.30);
}
.btn-secondary{
    background:#fff;
    color:var(--primary);
    border:1px solid var(--line);
}
.btn-secondary:hover{
    background:var(--primary-deep);
    color:#fff;
    border-color:var(--primary-deep);
    transform:translateY(-1px);
}
.btn-white{
    background:#fff;
    color:var(--primary-deep);
    box-shadow:0 4px 14px rgba(0,0,0,0.12);
}
.btn-white:hover{
    background:var(--accent);
    color:#fff;
    transform:translateY(-1px);
    box-shadow:0 6px 18px rgba(240,123,42,0.30);
}
.btn-header{
    padding:10px 24px;
    font-size:14px;
    flex-shrink:0;
}
.site-header{
    background:#fff;
    border-bottom:1px solid var(--border);
    position:sticky;
    top:0;
    z-index:100;
    transition:box-shadow 0.3s ease,background 0.3s ease;
}
.site-header.scrolled{
    background:rgba(255,255,255,0.92);
    box-shadow:0 1px 0 rgba(229,237,245,0.9),0 4px 12px rgba(21,83,158,0.04);
}
.header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    min-height:68px;
    gap:20px;
}
.logo{
    display:flex;
    align-items:center;
    gap:10px;
    flex-shrink:0;
}
.logo-icon{
    width:40px;
    height:40px;
    background:var(--primary);
    border-radius:50%;
    display:flex;
    align-items:center;
    justify-content:center;
    color:#fff;
    font-size:16px;
    box-shadow:var(--shadow-cta);
}
.logo-text{
    font-size:22px;
    font-weight:700;
    color:var(--primary-deep);
    letter-spacing:0.02em;
}
.logo-text span{color:var(--primary);}
.nav-chips{
    display:flex;
    gap:6px;
    background:#E9F0F7;
    padding:5px;
    border-radius:999px;
    align-items:center;
}
.chip{
    padding:8px 20px;
    border-radius:999px;
    font-size:14px;
    font-weight:500;
    color:var(--text);
    display:inline-flex;
    align-items:center;
    white-space:nowrap;
    transition:all 0.25s ease;
    border:1px solid transparent;
}
.chip:hover{
    color:var(--primary);
    border-color:var(--primary);
    background:#fff;
}
.chip.active{
    background:var(--primary);
    color:#fff;
    font-weight:600;
    border-color:var(--primary);
}
.chip.active:hover{
    background:var(--primary-deep);
    color:#fff;
    border-color:var(--primary-deep);
}
.breadcrumb-bar{
    background:#EBF1F8;
    border-bottom:1px solid var(--border);
    padding:18px 0;
}
.breadcrumb{
    display:flex;
    align-items:center;
    flex-wrap:wrap;
    gap:8px;
    font-size:14px;
    color:var(--text-weak);
}
.breadcrumb a{
    color:var(--primary);
    display:inline-flex;
    align-items:center;
    gap:6px;
}
.breadcrumb a:hover{color:var(--primary-deep);text-decoration:underline;text-underline-offset:3px;}
.breadcrumb .sep{
    color:#9BB2C7;
    font-size:12px;
    display:inline-flex;
    align-items:center;
}
.breadcrumb .current{
    color:var(--text-weak);
    max-width:320px;
    overflow:hidden;
    text-overflow:ellipsis;
    white-space:nowrap;
}
.article-section{
    padding:64px 0 80px;
    background:var(--bg);
}
.article-wrap{
    max-width:860px;
    margin:0 auto;
    background:#fff;
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);
    border:1px solid var(--border);
    padding:56px 64px;
}
.article-head{
    text-align:center;
    padding-bottom:32px;
    border-bottom:1px solid var(--border);
    margin-bottom:30px;
}
.article-cat-tag{
    display:inline-flex;
    align-items:center;
    gap:6px;
    background:rgba(240,123,42,0.12);
    color:var(--accent);
    font-size:13px;
    font-weight:600;
    padding:5px 16px;
    border-radius:999px;
    margin-bottom:18px;
}
.article-title{
    font-size:34px;
    font-weight:700;
    line-height:1.35;
    color:var(--text);
    margin:0 0 18px;
}
.article-summary{
    font-size:15px;
    color:var(--text-weak);
    line-height:1.85;
    max-width:680px;
    margin:0 auto 22px;
}
.article-meta{
    display:flex;
    justify-content:center;
    flex-wrap:wrap;
    gap:20px;
    font-size:14px;
    color:var(--text-weak);
}
.article-meta span{
    display:inline-flex;
    align-items:center;
    gap:7px;
}
.article-meta i{color:var(--primary);font-size:14px;}
.article-cover{
    margin:32px 0 36px;
    border-radius:12px;
    overflow:hidden;
}
.article-cover img{
    width:100%;
    display:block;
    object-fit:cover;
    aspect-ratio:16/9;
}
.article-content{
    font-size:16px;
    line-height:1.9;
    color:var(--text);
    word-break:break-word;
}
.article-content>*:first-child{margin-top:0;}
.article-content h2{
    font-size:26px;
    font-weight:700;
    margin:44px 0 18px;
    line-height:1.4;
    color:var(--text);
}
.article-content h3{
    font-size:22px;
    font-weight:600;
    margin:36px 0 16px;
    color:var(--text);
}
.article-content h4{
    font-size:18px;
    font-weight:600;
    margin:28px 0 12px;
    color:var(--text);
}
.article-content p{margin:0 0 22px;}
.article-content a{
    color:var(--primary);
    text-decoration:underline;
    text-underline-offset:3px;
}
.article-content a:hover{color:var(--primary-deep);}
.article-content ul,
.article-content ol{margin:0 0 22px;padding-left:26px;}
.article-content li{margin-bottom:8px;}
.article-content blockquote{
    margin:28px 0;
    padding:18px 22px;
    background:#F8FAFD;
    border-left:4px solid var(--primary);
    border-radius:0 8px 8px 0;
    color:var(--text-weak);
}
.article-content blockquote p{margin-bottom:0;}
.article-content pre{
    background:var(--dark);
    color:#E8F0F8;
    padding:18px 20px;
    border-radius:8px;
    overflow-x:auto;
    font-size:14px;
    line-height:1.7;
    margin:24px 0;
}
.article-content code{
    font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;
    font-size:0.9em;
    background:#F0F4F8;
    padding:2px 6px;
    border-radius:4px;
    color:var(--primary-deep);
}
.article-content pre code{background:transparent;padding:0;color:inherit;}
.article-content table{
    width:100%;
    margin:28px 0;
    border-collapse:collapse;
    font-size:15px;
}
.article-content table th,
.article-content table td{
    border:1px solid var(--border);
    padding:12px 14px;
    text-align:left;
}
.article-content table th{
    background:#F0F5FA;
    font-weight:600;
    color:var(--primary-deep);
}
.article-content table tr:nth-child(even) td{background:#FAFCFE;}
.article-content img{
    max-width:100%;
    height:auto;
    border-radius:10px;
    margin:24px 0;
}
.article-content hr{
    border:none;
    border-top:1px solid var(--border);
    margin:32px 0;
}
.article-tags{
    margin-top:40px;
    padding-top:26px;
    border-top:1px solid var(--border);
    display:flex;
    align-items:center;
    gap:10px;
    flex-wrap:wrap;
    font-size:14px;
}
.tag-label{
    color:var(--text-weak);
    display:inline-flex;
    align-items:center;
    gap:6px;
}
.tag{
    display:inline-flex;
    align-items:center;
    background:#F0F5FA;
    color:var(--primary);
    border-radius:999px;
    padding:5px 14px;
    font-size:13px;
    font-weight:500;
    text-decoration:none;
    border:1px solid transparent;
    transition:all 0.25s ease;
    line-height:1.4;
}
.tag:hover{
    background:var(--primary);
    color:#fff;
    border-color:var(--primary);
}
.article-notfound{
    max-width:620px;
    margin:0 auto;
    background:#fff;
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);
    border:1px solid var(--border);
    padding:60px 40px;
    text-align:center;
}
.notfound-icon{
    width:76px;
    height:76px;
    border-radius:50%;
    background:#E9F0F7;
    color:var(--primary);
    font-size:32px;
    display:flex;
    align-items:center;
    justify-content:center;
    margin:0 auto 24px;
}
.notfound-title{
    font-size:26px;
    font-weight:700;
    color:var(--text);
    margin:0 0 14px;
}
.article-notfound p{
    color:var(--text-weak);
    margin:0 0 30px;
    font-size:15px;
    line-height:1.8;
}
.related-section{
    padding:80px 0;
    background:#fff;
    border-top:1px solid var(--border);
}
.section-head{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    margin-bottom:36px;
    gap:20px;
}
.section-head h2{
    font-size:28px;
    font-weight:700;
    color:var(--text);
    margin:0;
    position:relative;
    padding-left:16px;
    line-height:1.3;
}
.section-head h2::before{
    content:'';
    position:absolute;
    left:0;
    top:4px;
    bottom:4px;
    width:4px;
    background:var(--accent);
    border-radius:2px;
}
.section-more{
    color:var(--primary);
    font-size:14px;
    display:inline-flex;
    align-items:center;
    gap:6px;
    text-decoration:none;
    font-weight:500;
    flex-shrink:0;
}
.section-more:hover{
    color:var(--primary-deep);
    gap:10px;
}
.related-grid{
    max-width:860px;
    margin:0 auto 40px;
    display:flex;
    flex-direction:column;
    gap:16px;
}
.related-card{
    display:flex;
    align-items:center;
    gap:22px;
    background:var(--bg);
    border-radius:var(--radius-card);
    padding:16px 20px;
    text-decoration:none;
    transition:all 0.3s ease;
    border:1px solid transparent;
}
.related-card:hover{
    background:#fff;
    box-shadow:var(--shadow-hover);
    transform:translateY(-3px);
    border-color:var(--border);
}
.related-thumb{
    width:120px;
    height:90px;
    border-radius:8px;
    overflow:hidden;
    flex-shrink:0;
}
.related-thumb img{
    width:100%;
    height:100%;
    object-fit:cover;
    display:block;
    transition:transform 0.4s ease;
}
.related-card:hover .related-thumb img{transform:scale(1.06);}
.related-info{
    flex:1;
    min-width:0;
}
.related-info h4{
    font-size:17px;
    font-weight:600;
    color:var(--text);
    margin:0 0 8px;
    line-height:1.45;
    overflow:hidden;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    transition:color 0.25s ease;
}
.related-card:hover .related-info h4{color:var(--primary);}
.related-excerpt{
    font-size:14px;
    color:var(--text-weak);
    margin:0 0 8px;
    line-height:1.6;
    overflow:hidden;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
}
.related-date{
    font-size:13px;
    color:var(--text-weak);
    display:inline-flex;
    align-items:center;
    gap:6px;
}
.related-date i{color:var(--primary);font-size:12px;}
.article-actions{
    display:flex;
    justify-content:center;
    gap:16px;
    flex-wrap:wrap;
}
.article-actions .btn{min-width:150px;}
.cta-banner{
    background:var(--dark);
    color:#fff;
    text-align:center;
    padding:80px 20px;
    position:relative;
    overflow:hidden;
}
.cta-banner::before{
    content:'';
    position:absolute;
    inset:0;
    background-image:url('/assets/images/backpic/back-2.webp');
    background-size:cover;
    background-position:center;
    opacity:0.06;
}
.cta-banner .container{
    position:relative;
    z-index:1;
}
.cta-banner h2{
    font-size:32px;
    font-weight:700;
    margin:0 0 14px;
    color:#fff;
}
.cta-banner p{
    color:#A7BDD0;
    font-size:16px;
    max-width:560px;
    margin:0 auto 32px;
    line-height:1.8;
}
.site-footer{
    background:var(--dark);
    padding:64px 0 24px;
    color:#fff;
    border-top:1px solid rgba(255,255,255,0.05);
}
.footer-grid{
    display:grid;
    grid-template-columns:2fr 1fr 1fr 1.2fr;
    gap:40px;
    margin-bottom:48px;
}
.footer-brand .logo{
    margin-bottom:16px;
}
.footer-brand .logo-icon{
    background:var(--accent);
}
.footer-brand .logo-text{
    color:#fff;
}
.footer-brand .logo-text span{color:#8FC3EE;}
.foot-desc{
    color:#A7BDD0;
    font-size:14px;
    line-height:1.8;
    margin:0 0 20px;
    max-width:340px;
}
.footer-social{
    display:flex;
    gap:12px;
}
.footer-social a{
    width:40px;
    height:40px;
    border-radius:50%;
    background:rgba(255,255,255,0.08);
    color:#A7BDD0;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    font-size:16px;
    transition:all 0.3s ease;
}
.footer-social a:hover{
    background:var(--accent);
    color:#fff;
    transform:translateY(-2px);
}
.footer-col h4{
    font-size:16px;
    font-weight:600;
    color:#fff;
    margin:0 0 18px;
}
.footer-col ul{
    list-style:none;
    margin:0;
    padding:0;
    display:flex;
    flex-direction:column;
    gap:10px;
}
.footer-col ul li{
    font-size:14px;
    line-height:1.6;
}
.footer-col ul a{
    color:#A7BDD0;
    text-decoration:none;
    transition:color 0.25s ease;
    display:inline-flex;
    align-items:center;
    gap:6px;
}
.footer-col ul a:hover{color:#fff;}
.footer-contact li{
    color:#A7BDD0;
    display:flex;
    align-items:flex-start;
    gap:10px;
    font-size:14px;
}
.footer-contact i{
    color:var(--accent);
    margin-top:4px;
    width:16px;
    text-align:center;
    flex-shrink:0;
}
.footer-bottom{
    border-top:1px solid rgba(255,255,255,0.08);
    padding-top:22px;
    display:flex;
    justify-content:space-between;
    flex-wrap:wrap;
    gap:12px;
    color:#8EA3B8;
    font-size:14px;
}
.footer-bottom a{color:#8EA3B8;}
.footer-bottom a:hover{color:#fff;}
@media(max-width:1024px){
    .article-wrap{padding:44px 40px;}
    .related-grid{max-width:100%;}
}
@media(max-width:768px){
    :root{--section-pad:56px;}
    .article-section{padding:44px 0 60px;}
    .related-section{padding:60px 0;}
    .cta-banner{padding:64px 20px;}
    .cta-banner h2{font-size:26px;}
    .section-head h2{font-size:24px;}
    .article-title{font-size:27px;}
    .article-wrap{padding:32px 26px;}
    .article-content{font-size:15px;}
    .article-content h2{font-size:22px;}
    .article-content h3{font-size:19px;}
    .related-card{padding:14px 16px;gap:16px;}
    .related-thumb{width:100px;height:75px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .footer-brand{grid-column:1/-1;}
}
@media(max-width:640px){
    .header-inner{
        flex-wrap:wrap;
        min-height:auto;
        padding:12px 0;
        gap:10px;
    }
    .nav-chips{
        order:3;
        width:100%;
        overflow-x:auto;
        justify-content:flex-start;
        -webkit-overflow-scrolling:touch;
        scrollbar-width:none;
    }
    .nav-chips::-webkit-scrollbar{display:none;}
    .chip{padding:8px 16px;font-size:13px;}
    .btn-header{padding:8px 18px;font-size:13px;}
    .logo-text{font-size:19px;}
    .logo-icon{width:36px;height:36px;font-size:14px;}
    .breadcrumb-bar{padding:14px 0;}
    .breadcrumb .current{max-width:180px;}
    .article-wrap{padding:26px 18px;border-radius:10px;}
    .article-title{font-size:23px;line-height:1.4;}
    .article-summary{font-size:14px;line-height:1.75;}
    .article-meta{gap:12px;font-size:13px;}
    .article-cover{margin:24px 0 28px;}
    .article-tags{gap:8px;}
    .related-section{padding:48px 0;}
    .related-grid{gap:12px;margin-bottom:32px;}
    .related-card{padding:14px 14px;gap:14px;flex-direction:column;align-items:stretch;}
    .related-thumb{width:100%;height:150px;}
    .related-info h4{font-size:16px;}
    .article-actions .btn{width:100%;}
    .cta-banner h2{font-size:23px;}
    .cta-banner p{font-size:14px;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
    .footer-bottom{flex-direction:column;text-align:center;justify-content:center;}
    .article-notfound{padding:44px 24px;}
    .notfound-title{font-size:22px;}
}
@media(max-width:520px){
    .container{padding:0 16px;}
    .article-wrap{padding:22px 14px;}
    .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
}