/* CSS变量 */
:root {
    --vh: 1vh;
}

/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo {
    width: 40px;
    height: 40px;
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: #1a1a1a;
}

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

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #2563eb;
}

.cta-nav {
    background: #2563eb;
    color: white !important;
    padding: 10px 20px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.cta-nav:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
}

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

.bar {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero 区域 */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: white;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1920 1080"><rect fill="%231e293b" width="1920" height="1080"/><g fill="%23374151" opacity="0.3"><circle cx="200" cy="200" r="2"/><circle cx="800" cy="300" r="1.5"/><circle cx="1200" cy="150" r="2.5"/><circle cx="400" cy="600" r="1"/><circle cx="1600" cy="500" r="2"/><circle cx="300" cy="800" r="1.5"/><circle cx="1400" cy="900" r="2.5"/></g></svg>') center/cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.7);
}

.global-map {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><path fill="none" stroke="%234f46e5" stroke-width="2" opacity="0.3" d="M100,100 Q300,50 500,100 T900,100"/><path fill="none" stroke="%234f46e5" stroke-width="2" opacity="0.3" d="M200,200 Q400,150 600,200 T1000,200"/></svg>') center/cover;
}

.map-point {
    position: absolute;
    width: 12px;
    height: 12px;
    background: #f59e0b;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.map-point::after {
    content: attr(data-location);
    position: absolute;
    top: -30px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    white-space: nowrap;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.7; }
    100% { transform: scale(1); opacity: 1; }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    text-align: center;
}

.hero-title {
    margin-bottom: 20px;
}

.hero-title-en {
    display: block;
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    background: linear-gradient(135deg, #60a5fa, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title-cn {
    display: block;
    font-size: 2rem;
    font-weight: 500;
    color: #cbd5e1;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #cbd5e1;
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-bottom: 40px;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: #f59e0b;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 1rem;
    color: #94a3b8;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(37, 99, 235, 0.3);
}

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

.btn-secondary:hover {
    background: white;
    color: #1e293b;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: #2563eb;
    border: 2px solid #2563eb;
}

.btn-outline:hover {
    background: #2563eb;
    color: white;
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
}

/* 区域标题 */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    color: #1a1a1a;
}

/* 问题解决区域 */
.problems {
    padding: 100px 0;
    background: #f8fafc;
}

.problems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

.problem-card {
    background: white;
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.problem-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #f59e0b, #d97706);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.problem-icon i {
    font-size: 24px;
    color: white;
}

.problem-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: #1a1a1a;
}

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

.problem-list li {
    padding: 8px 0;
    color: #64748b;
    position: relative;
    padding-left: 20px;
}

.problem-list li::before {
    content: '"';
    position: absolute;
    left: 0;
    color: #f59e0b;
    font-weight: bold;
}

.solution-banner {
    text-align: center;
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: white;
    padding: 30px;
    border-radius: 16px;
}

.solution-banner h3 {
    font-size: 1.5rem;
    font-weight: 600;
}

/* 服务展示区域 */
.services {
    padding: 100px 0;
    background: white;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.service-card {
    background: #f8fafc;
    padding: 40px;
    border-radius: 16px;
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border-color: #2563eb;
}

.service-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.service-icon i {
    font-size: 28px;
    color: white;
}

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: #1a1a1a;
}

.service-tagline {
    font-size: 1rem;
    color: #2563eb;
    font-weight: 500;
    margin-bottom: 20px;
}

.service-features {
    list-style: none;
}

.service-features li {
    padding: 8px 0;
    color: #64748b;
    position: relative;
    padding-left: 20px;
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: bold;
}

/* 优势展示区域 */
.why-us {
    padding: 100px 0;
    background: linear-gradient(135deg, #0f172a, #1e293b);
    color: white;
}

.why-us .section-title {
    color: white;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.advantage-item {
    text-align: center;
    padding: 30px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.advantage-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.1);
}

.advantage-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #f59e0b, #d97706);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.advantage-icon i {
    font-size: 24px;
    color: white;
}

.advantage-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: white;
}

.advantage-item p {
    color: #cbd5e1;
    line-height: 1.6;
}

.quote-banner {
    text-align: center;
    background: rgba(255, 255, 255, 0.1);
    padding: 40px;
    border-radius: 16px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.quote-banner blockquote {
    font-size: 1.5rem;
    font-weight: 500;
    font-style: italic;
    color: #f59e0b;
    margin: 0;
}

/* 成功案例展示 */
.cases {
    padding: 100px 0;
    background: #f8fafc;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

.case-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.case-header {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: white;
    padding: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.case-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

.case-tag {
    background: rgba(255, 255, 255, 0.2);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

.case-content {
    padding: 30px;
}

.case-problem, .case-solution, .case-result {
    margin-bottom: 20px;
}

.case-problem h4, .case-solution h4, .case-result h4 {
    font-size: 1rem;
    font-weight: 600;
    color: #374151;
    margin-bottom: 8px;
}

.case-result h4 {
    color: #059669;
}

.case-problem p, .case-solution p, .case-result p {
    color: #64748b;
    line-height: 1.6;
}

.cases-cta {
    text-align: center;
}

/* 投资者专区 */
.investor-hub {
    padding: 100px 0;
    background: white;
}

.investor-header {
    text-align: center;
    margin-bottom: 60px;
}

.investor-subtitle {
    font-size: 1.25rem;
    color: #2563eb;
    font-weight: 500;
    margin-top: 10px;
}

.investor-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.investor-features {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 20px;
    background: #f8fafc;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: #e2e8f0;
    transform: translateX(5px);
}

.feature-item i {
    font-size: 24px;
    color: #2563eb;
    margin-top: 5px;
}

.feature-item h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 5px;
    color: #1a1a1a;
}

.feature-item p {
    color: #64748b;
    margin: 0;
}

.investor-cta {
    text-align: center;
}

.investor-cta blockquote {
    font-size: 1.5rem;
    font-weight: 500;
    font-style: italic;
    color: #2563eb;
    margin-bottom: 30px;
}

.investor-buttons {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

/* 资源中心 */
.resources {
    padding: 100px 0;
    background: #f8fafc;
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 60px;
}

.resource-section h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 30px;
    color: #1a1a1a;
}

.resource-list, .content-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.resource-item, .content-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: white;
    border-radius: 12px;
    text-decoration: none;
    color: #374151;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.resource-item:hover, .content-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    color: #2563eb;
}

.resource-item i, .content-item i {
    font-size: 20px;
    color: #2563eb;
}

.content-item div {
    display: flex;
    flex-direction: column;
}

.content-title {
    font-weight: 600;
    margin-bottom: 2px;
}

.content-desc {
    font-size: 0.875rem;
    color: #64748b;
}

/* 关于我们 */
.about {
    padding: 100px 0;
    background: white;
}

.about-content {
    max-width: 1000px;
    margin: 0 auto;
}

.about-text {
    text-align: center;
    margin-bottom: 60px;
}

.about-intro, .about-mission, .about-belief {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: 20px;
    color: #374151;
}

.about-mission {
    font-weight: 500;
    color: #1a1a1a;
}

.team-section, .partners-section {
    margin-bottom: 60px;
}

.team-section h3, .partners-section h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 30px;
    text-align: center;
    color: #1a1a1a;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.team-member {
    text-align: center;
    padding: 30px;
    background: #f8fafc;
    border-radius: 16px;
    transition: transform 0.3s ease;
}

.team-member:hover {
    transform: translateY(-5px);
}

.member-avatar {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.member-avatar i {
    font-size: 32px;
    color: white;
}

.team-member h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 5px;
    color: #1a1a1a;
}

.team-member p {
    font-size: 0.875rem;
    color: #2563eb;
    font-weight: 500;
    margin-bottom: 10px;
}

.team-member span {
    font-size: 0.875rem;
    color: #64748b;
    line-height: 1.5;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.partner-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 30px 20px;
    background: #f8fafc;
    border-radius: 12px;
    transition: transform 0.3s ease;
}

.partner-logo:hover {
    transform: translateY(-3px);
}

.partner-logo i {
    font-size: 32px;
    color: #2563eb;
}

.partner-logo span {
    font-size: 0.875rem;
    font-weight: 500;
    color: #374151;
    text-align: center;
}

/* 联系表单 */
.contact {
    padding: 100px 0;
    background: linear-gradient(135deg, #0f172a, #1e293b);
    color: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-info h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 30px;
}

.contact-info h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: #f59e0b;
}

.consideration-list {
    list-style: none;
    margin-bottom: 30px;
}

.consideration-list li {
    padding: 8px 0;
    color: #cbd5e1;
    position: relative;
    padding-left: 20px;
}

.consideration-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: #f59e0b;
    font-weight: bold;
}

.contact-description {
    font-size: 1.125rem;
    color: #cbd5e1;
    margin-bottom: 40px;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 15px;
    color: #cbd5e1;
}

.contact-method i {
    font-size: 20px;
    color: #f59e0b;
}

.contact-form {
    background: rgba(255, 255, 255, 0.05);
    padding: 40px;
    border-radius: 16px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #94a3b8;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2563eb;
    background: rgba(255, 255, 255, 0.15);
}

.form-group textarea {
    height: 120px;
    resize: vertical;
}

.form-note {
    text-align: center;
    color: #94a3b8;
    font-size: 0.875rem;
    margin-top: 15px;
}

/* 页脚 */
.footer {
    background: #1a1a1a;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.footer-description {
    color: #94a3b8;
    line-height: 1.6;
}

.footer-section h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: white;
}

.footer-links {
    list-style: none;
}

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

.footer-links a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #2563eb;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-link {
    width: 40px;
    height: 40px;
    background: #374151;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: #2563eb;
    transform: translateY(-2px);
}

.legal-notice {
    color: #94a3b8;
    font-size: 0.875rem;
    line-height: 1.5;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #374151;
    color: #94a3b8;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 60px;
        flex-direction: column;
        background-color: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        width: 100%;
        text-align: center;
        transition: 0.3s ease;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        padding: 30px 0;
        border-top: 1px solid rgba(0, 0, 0, 0.1);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-link {
        padding: 15px 0;
        font-size: 1.1rem;
        border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    }
    
    .nav-link:last-child {
        border-bottom: none;
    }
    
    .nav-container {
        padding: 0 15px;
        height: 60px;
    }
    
    .navbar {
        height: 60px;
    }
    
    /* Hero区域手机端优化 */
    .hero {
        min-height: calc(var(--vh, 1vh) * 100);
        padding: 60px 0 30px;
        text-align: center;
    }
    
    .hero-content {
        padding: 0 15px;
        max-width: 100%;
    }
    
    .hero-title-en {
        font-size: 2.2rem;
        line-height: 1.1;
        margin-bottom: 8px;
        word-spacing: -2px;
    }
    
    .hero-title-cn {
        font-size: 1.3rem;
        margin-bottom: 20px;
    }
    
    .hero-subtitle {
        font-size: 1rem;
        line-height: 1.6;
        padding: 0 5px;
        margin-bottom: 30px;
    }
    
    .hero-stats {
        flex-direction: row;
        gap: 15px;
        flex-wrap: wrap;
        justify-content: center;
        margin-bottom: 30px;
    }
    
    .stat {
        min-width: 70px;
        flex: 1;
        max-width: 100px;
    }
    
    .stat-number {
        font-size: 1.8rem;
        margin-bottom: 3px;
    }
    
    .stat-label {
        font-size: 0.8rem;
        line-height: 1.2;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
        gap: 12px;
        padding: 0 15px;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
        padding: 14px 25px;
        font-size: 0.95rem;
        border-radius: 12px;
    }
    
    /* 区域标题优化 */
    .section-title {
        font-size: 1.8rem;
        margin-bottom: 30px;
        padding: 0 15px;
        line-height: 1.3;
    }
    
    /* 卡片布局优化 */
    .problems-grid,
    .services-grid,
    .advantages-grid,
    .cases-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 0 5px;
    }
    
    .problem-card,
    .service-card,
    .advantage-item,
    .case-card {
        padding: 25px 20px;
        margin: 0;
        border-radius: 16px;
    }
    
    .problem-card h3,
    .service-card h3,
    .advantage-item h3 {
        font-size: 1.25rem;
        margin-bottom: 15px;
    }
    
    /* 图标和内容优化 */
    .problem-icon,
    .service-icon,
    .advantage-icon {
        width: 50px;
        height: 50px;
        margin-bottom: 15px;
    }
    
    .problem-icon i,
    .service-icon i,
    .advantage-icon i {
        font-size: 20px;
    }
    
    /* 投资者和联系区域优化 */
    .investor-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .investor-features {
        gap: 15px;
    }
    
    .feature-item {
        padding: 20px 15px;
        flex-direction: column;
        text-align: center;
        gap: 12px;
        border-radius: 12px;
    }
    
    .feature-item i {
        font-size: 24px;
    }
    
    .feature-item h3 {
        font-size: 1.1rem;
        margin-bottom: 5px;
    }
    
    /* 资源中心优化 */
    .resources-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .resource-item,
    .content-item {
        padding: 18px 15px;
        flex-direction: row;
        text-align: left;
        gap: 15px;
        border-radius: 12px;
    }
    
    .resource-item i,
    .content-item i {
        font-size: 18px;
        margin-top: 2px;
    }
    
    /* 团队和合作伙伴优化 */
    .team-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .team-member {
        padding: 25px 20px;
    }
    
    .member-avatar {
        width: 70px;
        height: 70px;
        margin-bottom: 15px;
    }
    
    .member-avatar i {
        font-size: 28px;
    }
    
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .partner-logo {
        padding: 25px 15px;
    }
    
    .partner-logo i {
        font-size: 28px;
        margin-bottom: 8px;
    }
    
    /* 联系信息优化 */
    .contact-methods {
        gap: 15px;
    }
    
    .contact-method {
        flex-direction: row;
        text-align: left;
        gap: 12px;
        padding: 15px;
        background: rgba(255, 255, 255, 0.1);
        border-radius: 12px;
    }
    
    .contact-method i {
        font-size: 18px;
        margin-top: 2px;
    }
    
    /* 容器和间距优化 */
    .container {
        padding: 0 15px;
    }
    
    /* 引用横幅优化 */
    .quote-banner {
        padding: 25px 20px;
        margin: 0 10px;
        border-radius: 16px;
    }
    
    .quote-banner blockquote {
        font-size: 1.1rem;
        line-height: 1.5;
    }
    
    /* 页脚优化 */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 25px;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
        gap: 20px;
    }
    
    .social-link {
        width: 45px;
        height: 45px;
    }
    
    /* 表单优化 */
    .contact-form {
        padding: 25px 20px;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 16px;
        font-size: 16px;
        border-radius: 12px;
    }
    
    /* 案例卡片优化 */
    .case-header {
        padding: 20px;
    }
    
    .case-header h3 {
        font-size: 1.1rem;
        line-height: 1.4;
    }
    
    .case-content {
        padding: 20px;
    }
    
    .case-problem h4,
    .case-solution h4,
    .case-result h4 {
        font-size: 0.95rem;
        margin-bottom: 6px;
    }
    
    .case-problem p,
    .case-solution p,
    .case-result p {
        font-size: 0.9rem;
        line-height: 1.5;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 10px;
    }
    
    .nav-menu {
        padding: 25px 0;
    }
    
    .nav-link {
        padding: 12px 0;
        font-size: 1rem;
    }
    
    /* Hero区域小屏优化 */
    .hero {
        padding: 50px 0 25px;
    }
    
    .hero-title-en {
        font-size: 1.9rem;
        line-height: 1.1;
        word-spacing: -1px;
    }
    
    .hero-title-cn {
        font-size: 1.1rem;
        margin-bottom: 15px;
    }
    
    .hero-subtitle {
        font-size: 0.95rem;
        padding: 0 3px;
        margin-bottom: 25px;
        line-height: 1.5;
    }
    
    .hero-stats {
        flex-direction: row;
        gap: 12px;
        margin-bottom: 25px;
    }
    
    .stat {
        min-width: 60px;
        max-width: 80px;
    }
    
    .stat-number {
        font-size: 1.6rem;
        margin-bottom: 2px;
    }
    
    .stat-label {
        font-size: 0.75rem;
        line-height: 1.1;
    }
    
    .hero-cta {
        padding: 0 10px;
        gap: 10px;
    }
    
    .btn {
        padding: 12px 20px;
        font-size: 0.9rem;
        max-width: 260px;
        border-radius: 10px;
    }
    
    /* 区域标题小屏优化 */
    .section-title {
        font-size: 1.6rem;
        padding: 0 10px;
        margin-bottom: 25px;
        line-height: 1.2;
    }
    
    /* 卡片小屏优化 */
    .problems-grid,
    .services-grid,
    .advantages-grid,
    .cases-grid {
        gap: 15px;
        padding: 0;
    }
    
    .problem-card,
    .service-card,
    .advantage-item,
    .case-card {
        padding: 20px 15px;
        margin: 0;
        border-radius: 14px;
    }
    
    .problem-card h3,
    .service-card h3,
    .advantage-item h3 {
        font-size: 1.15rem;
        margin-bottom: 12px;
    }
    
    /* 图标小屏优化 */
    .problem-icon,
    .service-icon,
    .advantage-icon {
        width: 45px;
        height: 45px;
        margin-bottom: 12px;
    }
    
    .problem-icon i,
    .service-icon i,
    .advantage-icon i {
        font-size: 18px;
    }
    
    /* 联系表单小屏优化 */
    .contact-form {
        padding: 20px 15px;
    }
    
    .contact-info h2 {
        font-size: 1.8rem;
        margin-bottom: 20px;
    }
    
    .contact-info h3 {
        font-size: 1.1rem;
        margin-bottom: 15px;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 14px;
        font-size: 16px;
        border-radius: 10px;
    }
    
    /* 容器小屏优化 */
    .container {
        padding: 0 10px;
    }
    
    /* 团队小屏优化 */
    .team-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .team-member {
        padding: 20px 15px;
    }
    
    .member-avatar {
        width: 60px;
        height: 60px;
        margin-bottom: 12px;
    }
    
    .member-avatar i {
        font-size: 24px;
    }
    
    /* 合作伙伴小屏优化 */
    .partners-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .partner-logo {
        padding: 20px 12px;
    }
    
    .partner-logo i {
        font-size: 24px;
        margin-bottom: 6px;
    }
    
    /* 引用横幅小屏优化 */
    .quote-banner {
        padding: 20px 15px;
        margin: 0 5px;
        border-radius: 14px;
    }
    
    .quote-banner blockquote {
        font-size: 1rem;
        line-height: 1.4;
    }
    
    /* 案例卡片小屏优化 */
    .case-header {
        padding: 18px 15px;
    }
    
    .case-header h3 {
        font-size: 1rem;
        line-height: 1.3;
    }
    
    .case-content {
        padding: 18px 15px;
    }
    
    .case-problem h4,
    .case-solution h4,
    .case-result h4 {
        font-size: 0.9rem;
        margin-bottom: 5px;
    }
    
    .case-problem p,
    .case-solution p,
    .case-result p {
        font-size: 0.85rem;
        line-height: 1.4;
    }
    
    /* 投资者区域小屏优化 */
    .investor-header {
        margin-bottom: 30px;
    }
    
    .investor-subtitle {
        font-size: 1rem;
        margin-top: 8px;
    }
    
    .feature-item {
        padding: 18px 12px;
        gap: 10px;
    }
    
    .feature-item i {
        font-size: 22px;
    }
    
    .feature-item h3 {
        font-size: 1rem;
        margin-bottom: 4px;
    }
    
    /* 资源中心小屏优化 */
    .resource-item,
    .content-item {
        padding: 15px 12px;
        gap: 12px;
    }
    
    .resource-item i,
    .content-item i {
        font-size: 16px;
    }
    
    /* 联系信息小屏优化 */
    .contact-method {
        padding: 12px;
        gap: 10px;
    }
    
    .contact-method i {
        font-size: 16px;
    }
    
    /* 页脚小屏优化 */
    .social-link {
        width: 40px;
        height: 40px;
    }
    
    .footer-content {
        gap: 20px;
    }
}

/* 手机端触摸优化 */
@media (max-width: 768px) {
    /* 增加触摸目标大小 */
    .btn, .nav-link, .resource-item, .content-item {
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    /* 优化表单输入 */
    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: 16px; /* 防止iOS缩放 */
        padding: 16px;
        border-radius: 8px;
    }
    
    /* 优化卡片间距 */
    .problem-card,
    .service-card,
    .advantage-item,
    .case-card {
        margin-bottom: 20px;
    }
    
    /* 优化地图点位在小屏幕上的显示 */
    .map-point {
        width: 10px;
        height: 10px;
    }
    
    .map-point::after {
        font-size: 10px;
        padding: 2px 4px;
    }
    
    /* 优化Hero区域的移动端显示 */
    .hero {
        min-height: calc(var(--vh, 1vh) * 100);
        padding: 80px 0 40px;
    }
    
    .hero-content {
        padding: 0 15px;
    }
    
    /* 优化统计数字的显示 */
    .hero-stats {
        margin: 30px 0;
    }
    
    /* 优化导航栏在移动端的显示 */
    .navbar {
        height: 60px;
    }
    
    .nav-container {
        height: 60px;
    }
    
    .nav-menu {
        top: 60px;
    }
    
    /* 优化汉堡菜单动画 */
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active .bar:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }
    
    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }
    
    /* 优化滚动性能 */
    .hero-background {
        transform: translateZ(0);
        will-change: transform;
    }
    
    /* 优化文字可读性 */
    .hero-subtitle,
    .about-intro,
    .about-mission,
    .about-belief {
        line-height: 1.7;
    }
    
    /* 优化列表项间距 */
    .problem-list li,
    .service-features li {
        padding: 10px 0;
        line-height: 1.6;
    }
    
    /* 优化引用横幅在移动端的显示 */
    .quote-banner {
        margin: 0 10px;
    }
}

/* 超小屏幕优化 */
@media (max-width: 360px) {
    .nav-container {
        padding: 0 8px;
    }
    
    .nav-menu {
        padding: 20px 0;
    }
    
    .nav-link {
        padding: 10px 0;
        font-size: 0.95rem;
    }
    
    /* Hero区域超小屏优化 */
    .hero {
        padding: 45px 0 20px;
    }
    
    .hero-content {
        padding: 0 8px;
    }
    
    .hero-title-en {
        font-size: 1.7rem;
        line-height: 1.1;
        word-spacing: -1px;
    }
    
    .hero-title-cn {
        font-size: 1rem;
        margin-bottom: 12px;
    }
    
    .hero-subtitle {
        font-size: 0.9rem;
        padding: 0 2px;
        margin-bottom: 20px;
        line-height: 1.4;
    }
    
    .hero-stats {
        gap: 10px;
        margin-bottom: 20px;
    }
    
    .stat {
        min-width: 55px;
        max-width: 70px;
    }
    
    .stat-number {
        font-size: 1.4rem;
        margin-bottom: 1px;
    }
    
    .stat-label {
        font-size: 0.7rem;
        line-height: 1.1;
    }
    
    .hero-cta {
        padding: 0 8px;
        gap: 8px;
    }
    
    .btn {
        padding: 10px 16px;
        font-size: 0.85rem;
        max-width: 240px;
        border-radius: 8px;
    }
    
    /* 区域标题超小屏优化 */
    .section-title {
        font-size: 1.4rem;
        padding: 0 8px;
        margin-bottom: 20px;
        line-height: 1.2;
    }
    
    /* 卡片超小屏优化 */
    .problems-grid,
    .services-grid,
    .advantages-grid,
    .cases-grid {
        gap: 12px;
        padding: 0;
    }
    
    .problem-card,
    .service-card,
    .advantage-item,
    .case-card {
        padding: 18px 12px;
        margin: 0;
        border-radius: 12px;
    }
    
    .problem-card h3,
    .service-card h3,
    .advantage-item h3 {
        font-size: 1.1rem;
        margin-bottom: 10px;
    }
    
    /* 图标超小屏优化 */
    .problem-icon,
    .service-icon,
    .advantage-icon {
        width: 40px;
        height: 40px;
        margin-bottom: 10px;
    }
    
    .problem-icon i,
    .service-icon i,
    .advantage-icon i {
        font-size: 16px;
    }
    
    /* 联系表单超小屏优化 */
    .contact-form {
        padding: 18px 12px;
    }
    
    .contact-info h2 {
        font-size: 1.6rem;
        margin-bottom: 18px;
    }
    
    .contact-info h3 {
        font-size: 1rem;
        margin-bottom: 12px;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 12px;
        font-size: 16px;
        border-radius: 8px;
    }
    
    /* 容器超小屏优化 */
    .container {
        padding: 0 8px;
    }
    
    /* 团队超小屏优化 */
    .team-member {
        padding: 18px 12px;
    }
    
    .member-avatar {
        width: 55px;
        height: 55px;
        margin-bottom: 10px;
    }
    
    .member-avatar i {
        font-size: 22px;
    }
    
    /* 合作伙伴超小屏优化 */
    .partner-logo {
        padding: 18px 10px;
    }
    
    .partner-logo i {
        font-size: 22px;
        margin-bottom: 5px;
    }
    
    /* 引用横幅超小屏优化 */
    .quote-banner {
        padding: 18px 12px;
        margin: 0 3px;
        border-radius: 12px;
    }
    
    .quote-banner blockquote {
        font-size: 0.95rem;
        line-height: 1.3;
    }
    
    /* 案例卡片超小屏优化 */
    .case-header {
        padding: 16px 12px;
    }
    
    .case-header h3 {
        font-size: 0.95rem;
        line-height: 1.2;
    }
    
    .case-content {
        padding: 16px 12px;
    }
    
    .case-problem h4,
    .case-solution h4,
    .case-result h4 {
        font-size: 0.85rem;
        margin-bottom: 4px;
    }
    
    .case-problem p,
    .case-solution p,
    .case-result p {
        font-size: 0.8rem;
        line-height: 1.3;
    }
    
    /* 投资者区域超小屏优化 */
    .investor-header {
        margin-bottom: 25px;
    }
    
    .investor-subtitle {
        font-size: 0.95rem;
        margin-top: 6px;
    }
    
    .feature-item {
        padding: 16px 10px;
        gap: 8px;
    }
    
    .feature-item i {
        font-size: 20px;
    }
    
    .feature-item h3 {
        font-size: 0.95rem;
        margin-bottom: 3px;
    }
    
    /* 资源中心超小屏优化 */
    .resource-item,
    .content-item {
        padding: 14px 10px;
        gap: 10px;
    }
    
    .resource-item i,
    .content-item i {
        font-size: 15px;
    }
    
    /* 联系信息超小屏优化 */
    .contact-method {
        padding: 10px;
        gap: 8px;
    }
    
    .contact-method i {
        font-size: 15px;
    }
    
    /* 页脚超小屏优化 */
    .social-link {
        width: 38px;
        height: 38px;
    }
    
    .footer-content {
        gap: 18px;
    }
}

/* 移动端特定优化 */
@media (max-width: 768px) {
    /* 添加移动端安全区域支持 */
    .navbar {
        padding-top: env(safe-area-inset-top);
    }
    
    .hero {
        padding-top: calc(60px + env(safe-area-inset-top));
    }
    
    /* 移动端滚动优化 */
    .hero-background {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        z-index: -1;
    }
    
    /* 移动端卡片阴影优化 */
    .problem-card,
    .service-card,
    .advantage-item,
    .case-card {
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        border: 1px solid rgba(0, 0, 0, 0.05);
    }
    
    .problem-card:hover,
    .service-card:hover,
    .advantage-item:hover,
    .case-card:hover {
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
        transform: translateY(-2px);
    }
    
    /* 移动端按钮优化 */
    .btn {
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }
    
    .btn:active {
        transform: scale(0.98);
    }
    
    /* 移动端表单优化 */
    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
        box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
        border-color: #2563eb;
    }
    
    /* 移动端导航优化 */
    .nav-menu {
        -webkit-overflow-scrolling: touch;
    }
    
    .nav-link {
        -webkit-tap-highlight-color: transparent;
    }
    
    /* 移动端图片优化 */
    .logo {
        max-width: 100%;
        height: auto;
    }
    
    /* 移动端文字选择优化 */
    .hero-title-en,
    .hero-title-cn,
    .section-title {
        -webkit-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
    }
    
    /* 移动端列表优化 */
    .problem-list li,
    .service-features li {
        position: relative;
        padding-left: 25px;
    }
    
    .problem-list li::before {
        left: 0;
        top: 8px;
    }
    
    .service-features li::before {
        left: 0;
        top: 8px;
    }
    
    /* 移动端统计数字优化 */
    .stat-number {
        font-variant-numeric: tabular-nums;
    }
    
    /* 移动端地图点位优化 */
    .map-point {
        position: relative;
        z-index: 2;
    }
    
    .map-point::after {
        white-space: nowrap;
        pointer-events: none;
    }
    
    /* 移动端引用横幅优化 */
    .quote-banner {
        position: relative;
        overflow: hidden;
    }
    
    .quote-banner::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
        animation: shimmer 3s infinite;
    }
    
    @keyframes shimmer {
        0% { left: -100%; }
        100% { left: 100%; }
    }
    
    /* 移动端页脚优化 */
    .footer {
        padding-bottom: calc(20px + env(safe-area-inset-bottom));
    }
}

/* 横屏模式优化 */
@media (max-width: 768px) and (orientation: landscape) {
    .hero {
        min-height: calc(var(--vh, 1vh) * 100);
        padding: 40px 0 20px;
    }
    
    .hero-title-en {
        font-size: 2rem;
    }
    
    .hero-title-cn {
        font-size: 1.2rem;
    }
    
    .hero-stats {
        flex-direction: row;
        gap: 20px;
    }
    
    .stat {
        min-width: 80px;
    }
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 加载动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #2563eb;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #1d4ed8;
}