/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #fff;
    font-size: 16px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏样式 */
.navbar {
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.nav-brand a {
    font-size: 1.5rem;
    font-weight: bold;
    color: #333;
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    color: #666;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 8px 0;
}

.nav-link:hover,
.nav-link.active {
    color: #e74c3c;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: #e74c3c;
    color: white;
}

.btn-primary:hover {
    background: #c0392b;
    transform: translateY(-2px);
}

.btn-secondary {
    background: #3498db;
    color: white;
}

.btn-secondary:hover {
    background: #2980b9;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: #e74c3c;
    border: 2px solid #e74c3c;
}

.btn-outline:hover {
    background: #e74c3c;
    color: white;
}

/* 主要内容区域 */
.main-content {
    margin-top: 70px;
}

/* 章节标题 */
.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: bold;
    color: #333;
    margin-bottom: 50px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .container {
        padding: 0 15px;
    }
}

/* 小红投产品页面专用样式 */
.xiaohongshu-logo {
    font-family: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    font-size: 3.5rem;
    font-weight: bold;
    background: linear-gradient(135deg, #ff2442 0%, #ff6b8a 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.xiaohongshu-logo-small {
    font-family: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    font-size: 1.5rem;
    font-weight: bold;
    background: linear-gradient(135deg, #ff2442 0%, #ff6b8a 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-container {
    text-align: center;
    margin-bottom: 30px;
}

.logo-subtitle {
    font-size: 1.2rem;
    color: #666;
    margin-top: 10px;
}

.xiaohongtou-hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 120px 0 80px;
    text-align: center;
}

.xiaohongtou-hero .hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.xiaohongtou-hero .xiaohongshu-logo {
    -webkit-text-fill-color: white;
    background: none;
    color: white;
}

/* 英雄区文字可读性增强 */
.xiaohongtou-hero .xiaohongshu-logo,
.xiaohongtou-hero .logo-subtitle,
.xiaohongtou-hero .hero-description {
    text-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
}

.hero-description {
    font-size: 1.3rem;
    margin-bottom: 40px;
    opacity: 0.9;
    line-height: 1.6;
}

.core-features {
    padding: 80px 0;
    background: #f8f9fa;
}

/* 核心功能卡片 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.feature-card {
    background: #fff;
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    border: 1px solid rgba(0,0,0,0.06);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.12);
}

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 16px;
    box-shadow: 0 6px 16px rgba(231, 76, 60, 0.25);
}

/* 核心功能网格与卡片 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.feature-card {
    background: #fff;
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    border: 1px solid rgba(0,0,0,0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 36px rgba(0,0,0,0.12);
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    margin-bottom: 14px;
    background: rgba(231, 76, 60, 0.1);
    color: #e74c3c;
    font-size: 22px;
}

.feature-card h3 {
    margin-bottom: 8px;
    color: #2c3e50;
    font-size: 1.1rem;
}

.feature-card p {
    color: #6b7280;
    font-size: 0.95rem;
    line-height: 1.6;
}

.demo-section {
    padding: 80px 0;
}

.demo-container {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.demo-sidebar {
    background: white;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    padding: 30px;
    height: fit-content;
}

.demo-panel h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: #333;
}

.agent-status {
    margin-bottom: 30px;
}

.status-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid #eee;
}

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

.status-label {
    color: #666;
    font-size: 0.9rem;
}

.status-value {
    font-weight: 600;
}

.status-value.running {
    color: #4ade80;
}

.status-value.connected {
    color: #3b82f6;
}

.agent-controls {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.demo-main {
    background: white;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    overflow: hidden;
}

.demo-window {
    background: #1e1e1e;
    border-radius: 10px;
    overflow: hidden;
}

.demo-header {
    background: #2d2d2d;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.demo-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.demo-dot.red { background: #ff5f56; }
.demo-dot.yellow { background: #ffbd2e; }
.demo-dot.green { background: #27ca3f; }

.demo-title {
    color: #fff;
    font-size: 0.9rem;
    margin-left: 10px;
}

.demo-content {
    padding: 20px;
    height: 400px;
    overflow-y: auto;
}

.log-container {
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

.log-entry {
    display: flex;
    gap: 15px;
    margin-bottom: 10px;
    padding: 5px 0;
}

.log-time {
    color: #888;
    min-width: 80px;
}

.log-level {
    min-width: 60px;
    font-weight: bold;
}

.log-level.info {
    color: #3b82f6;
}

.log-level.success {
    color: #4ade80;
}

.log-level.warning {
    color: #f59e0b;
}

.log-level.error {
    color: #ef4444;
}

.log-message {
    color: #fff;
    flex: 1;
}

/* 技术架构样式 */
.tech-architecture {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

/* 优势区 */
.advantages-section {
    padding: 80px 0;
    background: #ffffff;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.advantage-item {
    background: #f8f9fa;
    border-radius: 12px;
    padding: 24px;
    border: 1px solid #e9ecef;
    position: relative;
    overflow: hidden;
}

.advantage-number {
    position: absolute;
    top: 12px;
    right: 16px;
    font-size: 48px;
    font-weight: 800;
    color: rgba(231, 76, 60, 0.12);
    pointer-events: none;
}

.advantage-item h3 {
    margin-bottom: 10px;
    color: #333;
}

.advantage-item p {
    color: #666;
    line-height: 1.6;
}

/* 联系我们 */
.contact-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 72px 0;
    text-align: center;
}

.contact-section .contact-content h2 {
    margin-bottom: 12px;
}

.contact-section .contact-content p {
    opacity: 0.9;
    margin-bottom: 20px;
}

.contact-section .contact-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* 优势特点 */
.advantages-section {
    padding: 80px 0;
    background: #fff;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.advantage-item {
    background: #ffffff;
    border-radius: 12px;
    padding: 24px;
    border: 1px solid rgba(0,0,0,0.05);
    box-shadow: 0 8px 24px rgba(0,0,0,0.06);
    position: relative;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.advantage-item:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 36px rgba(0,0,0,0.12);
}

.advantage-number {
    position: absolute;
    top: 16px;
    right: 16px;
    font-weight: 800;
    font-size: 2.25rem;
    line-height: 1;
    color: rgba(231,76,60,0.15);
}

.advantage-item h3 {
    margin-bottom: 10px;
    color: #2c3e50;
}

.advantage-item p {
    color: #6b7280;
    line-height: 1.6;
    margin: 0;
}

.architecture-overview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.tech-layer {
    background: white;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    border: 1px solid #e9ecef;
    transition: transform 0.3s ease;
}

.tech-layer:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 35px rgba(0,0,0,0.15);
}

.tech-layer h3 {
    font-size: 1.3rem;
    font-weight: bold;
    color: #2c3e50;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.tech-layer h3 i {
    color: var(--primary-color);
    font-size: 1.5rem;
}

.tech-components {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.component {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
    transition: all 0.3s ease;
}

.component:hover {
    background: #e9ecef;
    transform: translateX(5px);
}

.component-name {
    font-weight: 500;
    color: #2c3e50;
    font-size: 14px;
}

.component-desc {
    font-size: 12px;
    color: #7f8c8d;
    background: #e9ecef;
    padding: 4px 8px;
    border-radius: 12px;
}

/* 联系我们 */
.contact-section {
    background: linear-gradient(135deg, #f8fafc 0%, #eef2ff 100%);
    padding: 80px 0;
}

.contact-content {
    text-align: center;
}

.contact-content h2 {
    font-size: 2rem;
    color: #2c3e50;
    margin-bottom: 10px;
}

.contact-content p {
    color: #6b7280;
    margin-bottom: 20px;
}

.contact-buttons {
    display: inline-flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* 小红投平台专用样式 */
.platform-container {
    display: flex;
    min-height: calc(100vh - 70px);
    margin-top: 70px;
}

.platform-sidebar {
    width: 250px;
    background: #1a1a1a;
    color: white;
    padding: 20px 0;
    position: fixed;
    height: calc(100vh - 70px);
    overflow-y: auto;
}

.sidebar-menu {
    display: flex;
    flex-direction: column;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px 25px;
    color: #ccc;
    text-decoration: none;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.menu-item:hover {
    background: #2a2a2a;
    color: white;
    border-left-color: #e74c3c;
}

.menu-item.active {
    background: #2a2a2a;
    color: white;
    border-left-color: #e74c3c;
}

.menu-item i {
    width: 20px;
    text-align: center;
}

.platform-main {
    flex: 1;
    margin-left: 250px;
    background: #f8f9fa;
    min-height: calc(100vh - 70px);
}

.platform-section {
    display: none;
    padding: 30px;
}

.platform-section.active {
    display: block;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #eee;
}

.section-header h2 {
    font-size: 1.8rem;
    color: #333;
    margin: 0;
}

.header-actions {
    display: flex;
    gap: 10px;
}

/* 指标卡片 */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.metric-card {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    gap: 20px;
    transition: transform 0.3s ease;
}

.metric-card:hover {
    transform: translateY(-5px);
}

.metric-icon {
    font-size: 2.5rem;
    color: #e74c3c;
}

.metric-content {
    flex: 1;
}

.metric-value {
    font-size: 2rem;
    font-weight: bold;
    color: #333;
    margin-bottom: 5px;
}

.metric-label {
    color: #666;
    font-size: 0.9rem;
}

/* AI状态面板 */
.ai-status-panel {
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    padding: 25px;
    margin-bottom: 30px;
}

.ai-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.ai-header h3 {
    margin: 0;
    color: #333;
    display: flex;
    align-items: center;
    gap: 10px;
}

.ai-status {
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.ai-status.running {
    background: #dcfce7;
    color: #166534;
}

.ai-content {
    color: #666;
}

.ai-message {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.ai-recommendations {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.recommendation-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 4px solid #e74c3c;
}

.rec-icon {
    font-size: 1.2rem;
}

.rec-text {
    flex: 1;
    color: #333;
}

/* 投放管理 */
.campaigns-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 20px;
}

.campaign-card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    padding: 25px;
    transition: transform 0.3s ease;
}

.campaign-card:hover {
    transform: translateY(-5px);
}

.campaign-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.campaign-header h3 {
    margin: 0;
    color: #333;
    font-size: 1.3rem;
}

.campaign-status {
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
}

.campaign-status.active {
    background: #dcfce7;
    color: #166534;
}

.campaign-status.paused {
    background: #fef3c7;
    color: #92400e;
}

.campaign-metrics {
    margin-bottom: 20px;
}

.metric-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid #f0f0f0;
}

.metric-row:last-child {
    border-bottom: none;
}

.metric-label {
    color: #666;
    font-size: 0.9rem;
}

.metric-value {
    font-weight: 600;
    color: #333;
}

.campaign-actions {
    display: flex;
    gap: 10px;
}

/* 数据分析 */
.analytics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.chart-container {
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    padding: 25px;
}

.chart-container h3 {
    margin-bottom: 20px;
    color: #333;
}

.chart-placeholder {
    height: 200px;
    background: #f8f9fa;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
    font-style: italic;
}

.analytics-details {
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    padding: 25px;
}

.analytics-details h3 {
    margin-bottom: 20px;
    color: #333;
}

.analysis-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.analysis-item {
    padding: 20px;
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 4px solid #e74c3c;
}

.analysis-item h4 {
    margin-bottom: 10px;
    color: #333;
}

.analysis-item p {
    color: #666;
    line-height: 1.6;
    margin: 0;
}

/* AI助手 */
.ai-agent-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
}

.ai-chat {
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 600px;
}

.chat-messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    background: #f8f9fa;
}

.message {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #e74c3c;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.user-message .message-avatar {
    background: #3b82f6;
}

.message-content {
    flex: 1;
    background: white;
    padding: 15px;
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.message-text {
    color: #333;
    line-height: 1.5;
    margin-bottom: 5px;
}

.message-time {
    font-size: 0.8rem;
    color: #999;
}

.chat-input {
    display: flex;
    padding: 20px;
    gap: 10px;
    background: white;
    border-top: 1px solid #eee;
}

.chat-input input {
    flex: 1;
    padding: 12px 15px;
    border: 2px solid #ddd;
    border-radius: 25px;
    font-size: 0.9rem;
    transition: border-color 0.3s ease;
}

.chat-input input:focus {
    outline: none;
    border-color: #e74c3c;
}

.chat-input button {
    width: 45px;
    height: 45px;
    border: none;
    background: #e74c3c;
    color: white;
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.3s ease;
}

.chat-input button:hover {
    background: #c0392b;
}

.ai-suggestions {
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    padding: 25px;
    height: fit-content;
}

.ai-suggestions h3 {
    margin-bottom: 20px;
    color: #333;
}

.suggestion-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.suggestion-btn {
    padding: 12px 15px;
    background: #f8f9fa;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    color: #333;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
    font-size: 0.9rem;
}

.suggestion-btn:hover {
    background: #e74c3c;
    color: white;
    border-color: #e74c3c;
}

/* 设置页面 */
.settings-form {
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    padding: 30px;
}

.settings-group {
    margin-bottom: 40px;
}

.settings-group h3 {
    margin-bottom: 20px;
    color: #333;
    font-size: 1.3rem;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="email"] {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 0.9rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: #e74c3c;
}

.form-group input[type="checkbox"] {
    margin-right: 10px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .demo-container {
        grid-template-columns: 1fr;
    }

    .features-grid,
    .advantages-grid {
        grid-template-columns: 1fr;
    }

    .platform-sidebar {
        width: 100%;
        position: relative;
        height: auto;
    }
    
    .platform-main {
        margin-left: 0;
    }
    
    .platform-container {
        flex-direction: column;
    }
    
    .ai-agent-container {
        grid-template-columns: 1fr;
    }
    
    .metrics-grid {
        grid-template-columns: 1fr;
    }
    
    .campaigns-grid {
        grid-template-columns: 1fr;
    }
    
    .analytics-grid {
        grid-template-columns: 1fr;
    }
    
    .analysis-content {
        grid-template-columns: 1fr;
    }

    .architecture-overview {
        grid-template-columns: 1fr;
    }
    
    .tech-layer {
        padding: 20px;
    }
    
    .component {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }
}

/* 页脚样式 */
.footer {
    background: #111827;
    color: #e5e7eb;
    padding: 40px 0;
}

.footer .footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.footer h3, .footer h4 {
    color: #ffffff;
    margin-bottom: 12px;
}

.footer a {
    color: #e5e7eb;
    text-decoration: none;
}

.footer a:hover {
    color: #ffffff;
}

.footer .contact-info p {
    margin: 6px 0;
    color: #d1d5db;
}

.footer .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 16px;
    text-align: center;
    color: #9ca3af;
}

.footer-bottom .icp {
    margin-top: 6px;
}

.footer-bottom .icp a {
    color: #e5e7eb;
    text-decoration: none;
}

.footer-bottom .icp a:hover {
    color: #ffffff;
    text-decoration: underline;
}

@media (max-width: 480px) {
    .xiaohongshu-logo {
        font-size: 2.5rem;
    }
    
    .platform-section {
        padding: 20px;
    }
    
    .section-header {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
}