ul{
    padding: 0;
}
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;

    margin-bottom: 16px;
    margin-top: 0;
}
:root {
    --primary: #1e40af;
    --primary-light: #3b82f6;
    --secondary: #f97316;
    --success: #10b981;
    --dark: #1e293b;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --background: #ffffff;
    --light: #f8fafc;

    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
}
/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 14px;
    text-align: center;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
}

.btn:hover {
    transform: translateY(-1px);
}

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

.btn-primary:hover {
    background: #1e3a8a;
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--secondary);
    color: white;
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background: rgba(30, 64, 175, 0.05);
}

.btn-sm {
    padding: 6px 14px;
    font-size: 13px;
}

/* 标签页 */
.tabbed-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 16px;
}

.tab-navigation {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 24px;
}

.tab-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 16px 8px;
    background: white;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
    font-size: 12px;
}

.tab-btn:hover { border-color: var(--primary); }

.tab-btn.active {
    background: var(--primary);
    color: white;
}

.tab-icon {
    width: 28px;
    height: 28px;
    margin-bottom: 8px;
    object-fit: contain;
}

.tab-content {
    display: none;
    background: white;
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-md);
}

.tab-content.active { display: block; }

.tab-content-inner h3 {
    font-size: 20px;
    margin-bottom: 12px;
}

.tab-content-inner p {
    font-size: 15px;
    margin-bottom: 16px;
}

.tab-features {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.tab-feature-item {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--light);
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-size: 14px;
}

@media (min-width: 640px) {
    .tab-navigation { grid-template-columns: repeat(6, 1fr); }
    .tab-btn { font-size: 13px; padding: 20px 8px; }
    .tab-icon { width: 32px; height: 32px; }
}

@media (min-width: 1024px) {
    .tabbed-container { padding: 0 32px; }
    .tab-content { padding: 32px; }
    .tab-content-inner h3 { font-size: 24px; }
}


/* 案例卡片 */
.featured-content {
    padding: 48px 0;
    background: var(--gray-50);
}

.featured-content-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 16px;
}

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

.case-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform 0.2s, box-shadow 0.2s;
}

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

.case-card a {
    color: inherit;
    display: block;
}

.case-card-image {
    position: relative;
    height: 220px;
    background-size: cover;
    background-position: center;
}

.case-card-tags {
    position: absolute;
    bottom: 12px;
    left: 12px;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.case-tag {
    background: rgba(255,255,255,0.95);
    color: #333;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 500;
}

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

.case-card-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--dark);
}

.case-card-desc {
    font-size: 13px;
    color: var(--gray-600);
    line-height: 1.5;
    margin-bottom: 16px;
}

.case-stats {
    display: flex;
    justify-content: space-between;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--gray-100);
}

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

.case-stat-value {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
}

.case-stat-label {
    font-size: 11px;
    color: var(--gray-500);
}

.case-platforms {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.case-platform {
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 600;
    color: white;
}

.case-platform.deepseek { background: #1e40af; }
.case-platform.doubao { background: #ff7a00; }
.case-platform.yuanbao { background: #00a0e9; }

@media (min-width: 640px) {
    .case-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
    .featured-content { padding: 64px 0; }
    .featured-content-container { padding: 0 32px; }
    .case-grid { grid-template-columns: repeat(3, 1fr); }
}

/* 知识库页面 */
.knowledge-grid {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 32px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 16px;
}

.articles-section {
    background: white;
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-md);
}

.article-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.article-item {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--gray-100);
}

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

.article-image {
    width: 100%;
    height: 200px;
    border-radius: var(--radius-md);
    overflow: hidden;
}

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

.article-item:hover .article-image img { transform: scale(1.05); }

.article-content h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

.article-excerpt {
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.6;
    margin-bottom: 12px;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 13px;
    color: var(--gray-500);
}

.article-category {
    background: var(--primary);
    color: white;
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 12px;
}
@media (min-width: 1024px) {
    .knowledge-grid {
        grid-template-columns: 2.5fr 1fr;
        padding: 0 32px;
    }
    .article-item {flex-direction: row;}
    .article-image {
        width: 240px;
        height: 140px;
        flex-shrink: 0;
    }
}
.sidebars {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.sidebar-section {
    background: white;
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow-md);
}

.sidebar-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--dark);
}

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

.category-item { border-bottom: 1px solid var(--gray-100); }

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

.category-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    color: var(--gray-700);
    font-size: 14px;
    transition: color 0.2s;
}

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

.category-count {
    background: var(--gray-100);
    color: var(--gray-600);
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 12px;
}

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

.popular-item {
    display: flex;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--gray-100);
}

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

.popular-rank {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-300);
    line-height: 1;
}

.popular-content { flex: 1; }

.popular-title {
    font-size: 14px;
    color: var(--dark);
    margin-bottom: 4px;
    transition: color 0.2s;
}

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

.popular-meta {
    font-size: 12px;
    color: var(--gray-500);
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 32px;
    flex-wrap: wrap;
}

.page-link {
    padding: 8px 16px;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--gray-700);
    transition: all 0.2s;
}

.page-link:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}
.banner-subtitle{
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 8px;          /* 0.5rem × 16 = 8px */
    position: relative;
    z-index: 1;
    font-size: 16px;             /* 1rem × 16 = 16px */
    font-weight: 500;
}


/* 洞察和报告 */
.insights-reports {
    background: var(--gray-50);
    padding: 48px 0;                     /* 3rem × 16 = 48px */
}

.report-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;                           /* 1rem = 16px */
    margin-bottom: 32px;                 /* 2rem × 16 = 32px */
}

.report-card {
    background: white;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.2s;
}

.report-card:hover { box-shadow: var(--shadow-md); }

.report-card-image {
    height: 100px;
    background-size: cover;
    background-position: center;
}

.report-card-content { padding: 16px; }  /* 1rem = 16px */

.report-card-title {
    font-size: 15px;                     /* 0.9375rem × 16 = 15px */
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;                  /* 0.5rem × 16 = 8px */
    line-height: 1.4;
}

.report-card-desc {
    font-size: 13px;                     /* 0.8125rem × 16 = 13px */
    color: var(--gray-600);
    margin-bottom: 8px;                  /* 0.5rem × 16 = 8px */
}

.report-card-date {
    font-size: 12px;                     /* 0.75rem × 16 = 12px */
    color: var(--gray-500);
}

.insights-list {
    display: flex;
    flex-direction: column;
    gap: 12px;                           /* 0.75rem × 16 = 12px */
}

.insight-item {
    background: white;
    padding: 16px;                       /* 1rem = 16px */
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;                           /* 1rem = 16px */
}

.insight-title {
    font-size: 15px;                     /* 0.9375rem × 16 = 15px */
    color: var(--dark);
    font-weight: 500;
}

.insight-meta {
    font-size: 12px;                     /* 0.75rem × 16 = 12px */
    color: var(--gray-500);
    flex-shrink: 0;
}

/* 内容区块 */
.section-header {
    text-align: center;
    margin-bottom: 32px;
    padding: 0 16px;
}

.section-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
}

.section-subtitle {
    font-size: 16px;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .section-title { font-size: 30px; }
}

@media (min-width: 1024px) {
    .section-title { font-size: 36px; }
}
/* 统计区块 */
.geo-case-overview {
    background: white;
    padding: 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: 32px;
}

.geo-case-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    text-align: center;
}

.stat-item { padding: 8px; }

.stat-number {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 13px;
    color: var(--gray-500);
}

@media (min-width: 640px) {
    .geo-case-stats { grid-template-columns: repeat(4, 1fr); }
}
/* 核心价值区 */
.core-values {
    padding: 48px 0;
    background: var(--background);
}

.values-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 16px;
}

.value-card {
    background: white;
    padding: 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s;
}

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

.value-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(30, 64, 175, 0.1);
    border-radius: var(--radius-md);
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    overflow: hidden;
}

.value-icon-img {
    padding: 0;
    background: transparent;
}

.value-icon-img img {
    width: 100%;
    height: auto;
    object-fit: contain;
    border-radius: var(--radius-md);
    display: block;
}

/* 合规底线板块 - PC端一行4个 */
.compliance-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.compliance-grid .value-icon-img {
    width: auto;
    height: auto;
    max-width: 100%;
}

/* CTA区块 */
.cta-section {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    padding: 48px 0;
    color: white;
}

.cta-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 16px;
    text-align: center;
}

.cta-title {
    font-size: 24px;
    font-weight: 700;
    color: white;
    margin-bottom: 12px;
}

.cta-description {
    font-size: 16px;
    color: rgba(255,255,255,0.9);
    margin-bottom: 24px;
}

.cta-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
}

.cta-button {
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all 0.2s;
}

.cta-button-primary {
    background: white;
    color: var(--primary);
}

.cta-button-primary:hover {
    background: rgba(255,255,255,0.9);
    transform: translateY(-2px);
}

.cta-button-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.cta-button-secondary:hover {
    background: rgba(255,255,255,0.1);
}

@media (min-width: 640px) {
    .cta-actions { flex-direction: row; justify-content: center; }
}

@media (min-width: 1024px) {
    .cta-container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        text-align: left;
        padding: 0 32px;
    }
    .cta-title { font-size: 32px; }
    .cta-actions { justify-content: flex-start; }
}

/* 页脚 */
.footer {
    background: var(--dark);
    color: white;
    padding: 48px 0 24px;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 16px;
}

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

.footer-column h4 {
    color: white;
    font-size: 16px;
    margin-bottom: 16px;
}

.footer-logo { margin-bottom: 16px; }

.footer-logo img { height: 40px; }

.footer-desc {
    font-size: 12px;
    color: var(--gray-400);
    line-height: 1.7;
    letter-spacing: 0.02em;
    font-weight: 400;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-link {
    color: var(--gray-400);
    font-size: 14px;
    transition: color 0.2s;
}

.footer-link:hover { color: white; }

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 14px;
    color: var(--gray-400);
}

.footer-qr {
    width: 120px;
    height: 120px;
    background: white;
    border-radius: var(--radius-md);
    padding: 8px;
}

.footer-qr img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.footer-bottom {
    border-top: 1px solid var(--gray-700);
    padding-top: 24px;
    text-align: center;
    font-size: 13px;
    color: var(--gray-500);
}

.footer-bottom a {
    color: var(--gray-400);
    margin: 0 8px;
}

.footer-bottom a:hover { color: white; }

@media (min-width: 640px) {
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
    .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
    .footer-container { padding: 0 32px; }
}



/* 通用工具类 */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 16px;
}

@media (min-width: 1024px) {
    .container { padding: 0 32px; }
}
.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.text-gray { color: var(--gray-600); }
.bg-light { background: var(--light); }
.bg-white { background: white; }

.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }

.py-2 { padding-top: 16px; padding-bottom: 16px; }
.py-3 { padding-top: 24px; padding-bottom: 24px; }
.py-4 { padding-top: 32px; padding-bottom: 32px; }

.flex { display: flex; }
.justify-between { justify-content: space-between; }
.items-center { align-items: center; }
.gap-2 { gap: 8px; }
.gap-4 { gap: 16px; }

/* 淡入动画 */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

@media (min-width: 1024px) {
    .insights-grid {
        display: grid;
        grid-template-columns: 2fr 1fr;
        gap: 32px;           /* 2rem → 32px */
    }
    .report-grid {
        grid-template-columns: repeat(4, 1fr);
        margin-bottom: 0;    /* 0rem → 0px */
    }
}