/* Base Styles */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #60a5fa;
    --secondary-color: #10b981;
    --secondary-dark: #059669;
    --secondary-light: #34d399;
    --accent-color: #f59e0b;
    --accent-dark: #d97706;
    --accent-light: #fbbf24;
    --text-dark: #1f2937;
    --text-medium: #4b5563;
    --text-light: #9ca3af;
    --bg-light: #f9fafb;
    --bg-medium: #f3f4f6;
    --bg-dark: #e5e7eb;
    --white: #ffffff;
    --black: #000000;
    --danger: #ef4444;
    --success: #10b981;
    --warning: #f59e0b;
    --info: #3b82f6;
    --border-radius: 8px;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --transition: all 0.3s ease;
    /* 优化的中文字体栈 */
    --font-primary: 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', 'SimHei', 'Source Han Sans CN', 'Noto Sans SC', 'Segoe UI', sans-serif;
}

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

body {
    font-family: var(--font-primary);
    /* 增加行高以适应中文字符 */
    line-height: 1.8;
    color: var(--text-dark);
    background-color: var(--bg-light);
    /* 确保文本渲染平滑 */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* 增加基础字体大小以改善可读性 */
    font-size: 16px;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

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

ul {
    list-style: none;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    margin-bottom: 1.3rem;
    /* 调整标题行高以更好地适应中文 */
    line-height: 1.5;
    font-weight: 700;
    /* 调整字符间距以提高中文可读性 */
    letter-spacing: 0.005em;
    /* 为中文标题增加字间距 */
    word-spacing: 0.1em;
}

h1 {
    font-size: 2.4rem;
}

h2 {
    font-size: 1.9rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: 1.3rem;
    /* 略微增加字间距以提高中文可读性 */
    letter-spacing: 0.01em;
    /* 确保段落中文本不会过于拥挤 */
    word-spacing: 0.05em;
}

.section {
    padding: 5rem 0;
}

.section-title {
    font-size: 2.2rem;
    text-align: center;
    margin-bottom: 2.5rem;
    position: relative;
    color: var(--text-dark);
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background-color: var(--primary-color);
    margin: 1.3rem auto 0;
}

.section-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 3rem;
    color: var(--text-medium);
    font-size: 1.1rem;
    /* 增加行距以改善可读性 */
    line-height: 1.8;
}

/* Header & Navigation */
.header {
    background-color: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo {
    display: flex;
    flex-direction: column;
}

.logo h1 {
    color: var(--primary-color);
    font-size: 1.9rem;
    margin-bottom: 0;
}

.tagline {
    font-size: 0.95rem;
    color: var(--text-medium);
    margin-bottom: 0;
}

.main-nav ul {
    display: flex;
    /* 增加导航项之间的间距以适应中文文本 */
    gap: 1rem;
}

.main-nav li {
    /* 减少左边距，但确保每个导航项有足够的宽度 */
    margin-left: 0.8rem;
}

.main-nav a {
    color: var(--text-dark);
    font-weight: 500;
    /* 增加内边距以提供更好的点击区域和文本间距 */
    padding: 0.6rem 1rem;
    /* 调整字间距 */
    letter-spacing: 0.01em;
    /* 添加过渡效果 */
    transition: all 0.2s ease;
}

.main-nav a:hover {
    color: var(--primary-color);
    background-color: var(--bg-light);
    border-radius: var(--border-radius);
}

/* Hero Section */
.hero {
    background: linear-gradient(120deg, var(--primary-dark), var(--primary-color));
    color: var(--white);
    padding: 5.5rem 0;
    text-align: center;
}

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

.hero h1 {
    font-size: 2.8rem;
    margin-bottom: 1.3rem;
    /* 降低字重以使中文显示更清晰 */
    font-weight: 600;
}

.hero h2 {
    font-size: 1.8rem;
    margin-bottom: 1.8rem;
    font-weight: 400;
    /* 增加行高以适应中文 */
    line-height: 1.5;
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.9;
    /* 增加行高以改善可读性 */
    line-height: 1.9;
    /* 增加内边距，确保文本不会太靠近边缘 */
    padding: 0 10px;
}

/* Charts & Data Visualization */
.chart-row {
    display: flex;
    flex-wrap: wrap;
    margin: 2.5rem -15px;
    justify-content: center;
}

.chart-container {
    flex: 1 1 400px;
    margin: 0 15px 35px;
    background-color: var(--white);
    border-radius: var(--border-radius);
    /* 增加内边距以提供更好的视觉平衡 */
    padding: 28px;
    box-shadow: var(--shadow);
    /* 增加最小高度以确保一致性 */
    min-height: 400px;
    display: flex;
    flex-direction: column;
}

.chart-container.full-width {
    flex: 1 1 100%;
    max-width: 100%;
    min-height: 450px;
}

.chart-container h3 {
    text-align: center;
    margin-bottom: 1.8rem;
    font-size: 1.3rem;
    color: var(--text-dark);
    /* 确保标题不会太长而导致换行 */
    white-space: normal;
    /* 在需要时允许标题换行 */
    hyphens: auto;
}

.chart-caption {
    text-align: center;
    font-size: 0.95rem;
    color: var(--text-medium);
    margin-top: 1.3rem;
    margin-bottom: 0;
    /* 增加行高以适应中文 */
    line-height: 1.7;
    /* 确保在图表下方有足够空间 */
    padding: 0 10px;
}

/* 确保图表占用足够的空间 */
canvas {
    margin: auto;
    /* 使图表容器具有弹性布局 */
    flex-grow: 1;
    /* 设置最小高度，确保有足够的显示空间 */
    min-height: 300px;
}

/* Statistics Boxes */
.stats-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin: 2.5rem -15px;
}

.stat-box {
    flex: 1 1 220px;
    max-width: 280px;
    margin: 0 15px 30px;
    background-color: var(--white);
    border-radius: var(--border-radius);
    padding: 30px 25px;
    box-shadow: var(--shadow);
    text-align: center;
    /* 增加过渡效果 */
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-box:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.8rem;
}

.stat-label {
    font-size: 1.05rem;
    color: var(--text-medium);
    line-height: 1.6;
    /* 确保文本垂直居中 */
    display: flex;
    align-items: center;
    justify-content: center;
    /* 设置最小高度以确保统一的布局 */
    min-height: 3.2em;
}

/* Content Columns */
.text-section {
    margin: 4rem 0;
}

.text-section h3 {
    text-align: center;
    margin-bottom: 2.5rem;
}

.content-columns {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -15px;
}

.column {
    flex: 1 1 400px;
    margin: 0 15px 30px;
}

.column h4 {
    color: var(--primary-dark);
    margin-bottom: 1.3rem;
    display: flex;
    align-items: center;
}

.column h4 i {
    margin-right: 15px;
    color: var(--primary-color);
    font-size: 1.3rem;
}

.column p {
    /* 增加行高以改善中文阅读体验 */
    line-height: 1.8;
}

/* Competitor Analysis */
.competitor-cards {
    display: flex;
    flex-wrap: wrap;
    margin: 2.5rem -15px;
    justify-content: center;
}

.competitor-card {
    flex: 1 1 350px;
    margin: 0 15px 35px;
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    /* 增加过渡效果 */
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.competitor-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.competitor-logo {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 28px 20px;
    text-align: center;
    font-size: 1.8rem;
    font-weight: 700;
}

.competitor-card h3 {
    padding: 25px 25px 0;
    margin-bottom: 15px;
    text-align: center;
}

.competitor-details {
    padding: 0 25px 25px;
}

.competitor-details p {
    margin-bottom: 20px;
    font-size: 0.98rem;
    /* 增加中文内容的行高 */
    line-height: 1.8;
}

.competitor-details p:last-child {
    margin-bottom: 0;
}

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

/* Technology Trends */
.technology-trends {
    margin-top: 5rem;
}

.technology-trends h3 {
    text-align: center;
    margin-bottom: 2.5rem;
}

.trends-grid {
    display: flex;
    flex-wrap: wrap;
    margin: 2.5rem -15px;
    justify-content: center;
}

.trend-item {
    flex: 1 1 280px;
    margin: 0 15px 30px;
    background-color: var(--white);
    border-radius: var(--border-radius);
    padding: 30px 25px;
    box-shadow: var(--shadow);
    text-align: center;
    /* 增加过渡效果 */
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    /* 确保所有卡片高度一致 */
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    /* 设置最小高度以保持一致性 */
    min-height: 280px;
}

.trend-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.trend-item i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.3rem;
}

.trend-item h4 {
    color: var(--text-dark);
    margin-bottom: 1.3rem;
}

.trend-item p {
    font-size: 0.98rem;
    color: var(--text-medium);
    margin-bottom: 0;
    /* 调整中文内容的行高和字间距 */
    line-height: 1.8;
    letter-spacing: 0.01em;
    /* 使内容可以在必要时增长以填充容器 */
    flex-grow: 1;
}

/* User Personas */
.tabs {
    margin: 4rem 0;
}

.tab-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.tab-button {
    padding: 15px 30px;
    background-color: var(--bg-medium);
    border: none;
    border-radius: var(--border-radius);
    margin: 0 15px 15px;
    font-size: 1.05rem;
    font-weight: 500;
    color: var(--text-medium);
    cursor: pointer;
    transition: var(--transition);
    /* 确保按钮文本不会过长导致布局问题 */
    white-space: nowrap;
}

.tab-button:hover {
    background-color: var(--bg-dark);
}

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

.tab-pane {
    display: none;
}

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

.persona-card {
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.persona-header {
    display: flex;
    align-items: center;
    padding: 40px;
    background-color: var(--bg-medium);
}

.persona-avatar {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    background-color: var(--primary-color);
    display: flex;
    justify-content: center;
    align-items: center;
    margin-right: 35px;
    flex-shrink: 0;
}

.persona-avatar i {
    font-size: 2.6rem;
    color: var(--white);
}

.persona-intro {
    flex-grow: 1;
}

.persona-intro h3 {
    margin-bottom: 15px;
    font-size: 1.6rem;
}

.persona-quote {
    font-style: italic;
    color: var(--text-medium);
    font-size: 1.05rem;
    margin-bottom: 0;
    /* 调整引述的行高以适应中文 */
    line-height: 1.8;
    /* 增加引号样式 */
    position: relative;
    padding: 0 10px;
}

.persona-quote::before,
.persona-quote::after {
    content: '"';
    color: var(--primary-light);
    font-size: 1.5em;
    font-family: serif;
    line-height: 0;
    position: relative;
}

.persona-quote::before {
    margin-right: 0.2em;
    top: 0.3em;
}

.persona-quote::after {
    margin-left: 0.2em;
    bottom: -0.1em;
}

.persona-details {
    display: flex;
    flex-wrap: wrap;
    padding: 40px;
}

.persona-section {
    flex: 1 1 280px;
    margin-bottom: 35px;
    padding-right: 30px;
}

.persona-section h4 {
    color: var(--primary-color);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--bg-medium);
    /* 增加字体大小以改善可读性 */
    font-size: 1.25rem;
}

.persona-section ul {
    padding-left: 25px;
}

.persona-section ul li {
    position: relative;
    margin-bottom: 15px;
    padding-left: 20px;
    /* 调整列表项的行高 */
    line-height: 1.7;
}

.persona-section ul li:before {
    content: "•";
    color: var(--primary-color);
    position: absolute;
    left: 0;
    font-size: 1.2em;
}

.wtp-chart-container {
    min-height: 220px;
    margin-bottom: 20px;
}

.pain-points-section {
    margin-top: 5rem;
}

.pain-points-section h3 {
    text-align: center;
    margin-bottom: 2.5rem;
}

/* Market Opportunities */
.opportunities-grid {
    display: flex;
    flex-wrap: wrap;
    margin: 2.5rem -15px;
    justify-content: center;
}

.opportunity-card {
    flex: 1 1 370px;
    margin: 0 15px 35px;
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 40px;
    transition: var(--transition);
    /* 确保卡片高度一致 */
    display: flex;
    flex-direction: column;
}

.opportunity-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.opportunity-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: var(--primary-light);
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 30px;
}

.opportunity-icon i {
    font-size: 2.3rem;
    color: var(--white);
}

.opportunity-card h3 {
    text-align: center;
    margin-bottom: 20px;
    color: var(--primary-dark);
    font-size: 1.5rem;
}

.opportunity-card > p {
    text-align: center;
    color: var(--text-medium);
    margin-bottom: 30px;
    /* 调整卡片内容的行高和字间距 */
    line-height: 1.8;
    letter-spacing: 0.01em;
    /* 确保段落占据足够的空间 */
    flex-grow: 1;
}

.opportunity-details h4 {
    color: var(--text-dark);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--bg-medium);
}

.opportunity-details ul {
    padding-left: 25px;
}

.opportunity-details ul li {
    position: relative;
    margin-bottom: 15px;
    padding-left: 20px;
    /* 调整列表项行高 */
    line-height: 1.7;
}

.opportunity-details ul li:before {
    content: "•";
    color: var(--primary-color);
    position: absolute;
    left: 0;
    font-size: 1.2em;
}

/* Recommendations */
.recommendations-container {
    margin: 4rem 0;
}

.recommendation-section {
    margin-bottom: 4rem;
}

.recommendation-section h3 {
    display: flex;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--bg-medium);
    font-size: 1.5rem;
}

.recommendation-section h3 i {
    margin-right: 20px;
    color: var(--primary-color);
    font-size: 1.4rem;
}

.recommendation-content {
    padding: 0 30px;
}

.recommendation-item {
    margin-bottom: 2rem;
}

.recommendation-item h4 {
    color: var(--primary-dark);
    margin-bottom: 15px;
    font-size: 1.25rem;
}

.recommendation-item p {
    color: var(--text-medium);
    /* 调整推荐项内容的行高 */
    line-height: 1.8;
    /* 适当增加字体大小 */
    font-size: 1.02rem;
}

/* Pricing Tiers */
.pricing-tiers {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -15px;
    justify-content: center;
}

.pricing-tier {
    flex: 1 1 240px;
    margin: 0 15px 30px;
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 30px;
    text-align: center;
    transition: var(--transition);
    /* 确保价格卡片高度一致 */
    display: flex;
    flex-direction: column;
    min-height: 350px;
}

.pricing-tier:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.pricing-tier.featured {
    transform: scale(1.05);
    border: 2px solid var(--primary-color);
    position: relative;
    z-index: 1;
}

.pricing-tier h4 {
    color: var(--text-dark);
    margin-bottom: 20px;
    font-size: 1.25rem;
}

.pricing-price {
    font-size: 1.9rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 28px;
}

.pricing-tier ul {
    text-align: left;
    padding-left: 25px;
    /* 确保列表占据剩余的空间 */
    flex-grow: 1;
}

.pricing-tier ul li {
    position: relative;
    margin-bottom: 15px;
    padding-left: 22px;
    font-size: 1rem;
    /* 调整列表项行高 */
    line-height: 1.7;
    /* 确保文本对齐 */
    text-align: left;
}

.pricing-tier ul li:before {
    content: "✓";
    color: var(--success);
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* Roadmap */
.roadmap {
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 40px;
    position: relative;
}

.roadmap:before {
    content: '';
    position: absolute;
    top: 110px;
    left: 40px;
    height: calc(100% - 220px);
    width: 4px;
    background-color: var(--primary-light);
}

.roadmap-phase {
    position: relative;
    padding-left: 40px;
    margin-bottom: 50px;
}

.roadmap-phase:before {
    content: '';
    position: absolute;
    left: -8px;
    top: 16px;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background-color: var(--primary-color);
    z-index: 1;
}

.roadmap-phase:last-child {
    margin-bottom: 0;
}

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

.phase-header h4 {
    color: var(--primary-dark);
    margin-bottom: 0;
    font-size: 1.25rem;
}

.phase-duration {
    font-size: 0.95rem;
    color: var(--text-light);
    font-weight: 500;
    /* 适当增加内边距 */
    padding: 4px 10px;
    /* 添加背景和边框使其更突出 */
    background-color: var(--bg-light);
    border-radius: 20px;
}

.roadmap-phase ul {
    padding-left: 25px;
}

.roadmap-phase ul li {
    position: relative;
    margin-bottom: 15px;
    padding-left: 20px;
    /* 调整行高 */
    line-height: 1.7;
    /* 增加字体大小以改善可读性 */
    font-size: 1.02rem;
}

.roadmap-phase ul li:before {
    content: "•";
    color: var(--primary-color);
    position: absolute;
    left: 0;
    font-size: 1.2em;
}

/* Conclusion */
.conclusion {
    background-color: var(--bg-medium);
    border-radius: var(--border-radius);
    padding: 40px;
    margin-top: 4rem;
}

.conclusion h3 {
    color: var(--primary-dark);
    margin-bottom: 20px;
    text-align: center;
    font-size: 1.5rem;
}

.conclusion p {
    color: var(--text-medium);
    /* 调整结论段落的行高和字间距 */
    line-height: 1.9;
    letter-spacing: 0.01em;
    /* 增加字体大小和段落间距 */
    font-size: 1.05rem;
    margin-bottom: 1.4rem;
}

.conclusion p:last-child {
    margin-bottom: 0;
}

/* Footer */
.footer {
    background-color: var(--primary-dark);
    color: var(--white);
    padding: 5rem 0 3rem;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: 4rem;
}

.footer-info {
    flex: 1 1 320px;
    margin-bottom: 3rem;
}

.footer-info h2 {
    font-size: 2rem;
    margin-bottom: 0.8rem;
}

.footer-info p {
    opacity: 0.8;
    margin-bottom: 0.8rem;
    font-size: 1.05rem;
}

.footer-nav {
    flex: 1 1 320px;
}

.footer-nav ul {
    display: flex;
    flex-wrap: wrap;
}

.footer-nav li {
    flex: 0 0 50%;
    margin-bottom: 1.3rem;
}

.footer-nav a {
    color: var(--white);
    opacity: 0.8;
    transition: var(--transition);
    /* 增加内边距改善点击体验 */
    padding: 0.6rem 0;
    font-size: 1.05rem;
}

.footer-nav a:hover {
    opacity: 1;
    color: var(--white);
    /* 添加下划线效果 */
    text-decoration: underline;
}

.footer-bottom {
    text-align: center;
    padding-top: 3rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.6;
    font-size: 0.95rem;
}

/* 语言选择器样式优化 */
.language-item {
    margin-left: 25px !important;
}

.language-item a {
    color: var(--accent-color) !important;
    font-weight: bold !important;
    padding: 0.6rem 1.2rem !important;
    border: 2px solid var(--accent-color) !important;
    border-radius: var(--border-radius) !important;
    transition: all 0.3s ease !important;
}

.language-item a:hover {
    color: var(--white) !important;
    background-color: var(--accent-color) !important;
}

/* Responsive Adjustments - 改进移动端体验 */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        text-align: center;
        padding: 15px 20px;
    }
    
    .main-nav {
        margin-top: 1.5rem;
    }
    
    .main-nav ul {
        justify-content: center;
        /* 在移动设备上增加导航项之间的间距 */
        gap: 0.5rem;
        /* 为移动设备添加弹性布局 */
        flex-wrap: wrap;
    }
    
    .main-nav li {
        margin: 0 0.8rem;
        /* 为移动设备上的导航项设置适当大小 */
        flex: 0 0 auto;
    }
    
    .main-nav a {
        padding: 0.8rem 1rem;
        /* 增加移动设备上的点击区域 */
        display: inline-block;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .hero h2 {
        font-size: 1.5rem;
    }
    
    .hero p {
        font-size: 1.1rem;
        /* 增加内边距以避免文本挤压 */
        padding: 0 15px;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    /* 修改persona卡片在移动设备上的显示 */
    .persona-header {
        flex-direction: column;
        text-align: center;
        padding: 30px 20px;
    }
    
    .persona-avatar {
        margin-right: 0;
        margin-bottom: 25px;
    }
    
    .persona-details {
        padding: 30px 20px;
    }
    
    .roadmap:before {
        left: 25px;
    }
    
    /* 移动设备上改进容器和卡片的内边距 */
    .container {
        padding: 0 15px;
    }
    
    .chart-container,
    .stat-box,
    .trend-item,
    .opportunity-card,
    .pricing-tier {
        padding: 25px 20px;
    }
    
    /* 调整移动设备上的机会卡片和定价层级 */
    .opportunity-card,
    .pricing-tier {
        margin: 0 10px 25px;
    }
    
    /* 调整移动设备上的图表容器 */
    .chart-container {
        min-height: 350px;
    }
    
    canvas {
        min-height: 250px;
    }
    
    /* 调整移动设备上的标签按钮 */
    .tab-button {
        padding: 12px 20px;
        margin: 0 8px 10px;
        font-size: 0.95rem;
    }
    
    /* 确保结论部分在移动设备上也能良好显示 */
    .conclusion {
        padding: 30px 20px;
    }
    
    .conclusion p {
        font-size: 1rem;
    }
}

/* 针对较小的移动设备进一步优化 */
@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero h2 {
        font-size: 1.3rem;
    }
    
    .main-nav a {
        padding: 0.6rem 0.8rem;
        font-size: 0.95rem;
    }
    
    .language-item a {
        padding: 0.5rem 1rem !important;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
    
    .chart-container h3,
    .recommendation-section h3,
    .conclusion h3 {
        font-size: 1.3rem;
    }
    
    .stat-value {
        font-size: 2.2rem;
    }
    
    /* 调整极小屏幕上的内边距 */
    .chart-container,
    .stat-box,
    .trend-item,
    .opportunity-card,
    .pricing-tier,
    .persona-details,
    .roadmap {
        padding: 20px 15px;
    }
    
    /* 调整引述在小屏幕上的显示 */
    .persona-quote {
        font-size: 0.95rem;
    }
    
    .pricing-price {
        font-size: 1.7rem;
    }
}