:root {
    --primary-color: #2563EB;      /* 更深的蓝色 */
    --primary-light: #60A5FA;      /* 浅蓝色 */
    --secondary-color: #F0F7FF;    /* 非常浅的蓝色背景 */
    --accent-color: #1E40AF;       /* 深蓝色强调 */
    --text-color: #1F2937;         /* 深灰色文字 */
    --text-light: #6B7280;         /* 浅灰色文字 */
    --white: #FFFFFF;
    --background: #F8FAFC;         /* 浅灰蓝色背景 */
    --gradient-start: #2563EB;
    --gradient-end: #1E40AF;
    --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);
}

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

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background);
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header Styles */
.header {
    background-color: var(--white);
    box-shadow: var(--shadow-sm);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(8px);
    background-color: rgba(255, 255, 255, 0.95);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 0;
}

.logo img {
    height: 40px;
    transition: transform 0.3s ease;
}

.logo img:hover {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    font-size: 1.05rem;
    padding: 0.5rem 0;
    position: relative;
    transition: color 0.3s ease;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.nav-links a:hover::after {
    width: 100%;
}

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    color: var(--white);
    position: relative;
    overflow: hidden;
    text-align: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="20" height="20" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><rect width="1" height="1" fill="rgba(255,255,255,0.1)"/></svg>');
    opacity: 0.1;
}

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

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, #fff, #e2e8f0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
    margin: 0 auto 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    max-width: 900px;
    margin: 0 auto;
}

/* Button Styles */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-size: 1.05rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    text-align: center;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background-color: #f8fafc;
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--white);
    backdrop-filter: blur(4px);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(4px);
}

.btn-outline:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--white);
    transform: translateY(-2px);
}

/* Page Header Styles - 统一的页面头部样式 */
.page-header {
    background-color: #f8fafc;
    padding: 120px 0 60px;
    text-align: center;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.page-header .container {
    position: relative;
}

.page-header .header-content h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-color);
    line-height: 1.2;
}

.page-header .header-content p {
    font-size: 1.1rem;
    color: var(--text-light);
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Section Styles */
section {
    padding: 6rem 0;
}

section h2 {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-color);
}

/* Product Cards */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
    padding: 2rem 0;
}

.product-card {
    background: var(--white);
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(to right, var(--primary-color), var(--primary-light));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.product-card:hover::before {
    opacity: 1;
}

.product-card i {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.product-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.product-card p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

/* Features Section */
.features {
    background-color: var(--secondary-color);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    padding: 2rem 0;
}

.feature-item {
    text-align: center;
    padding: 2rem;
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

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

.feature-item i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.feature-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.feature-item p {
    color: var(--text-light);
    line-height: 1.7;
}

/* Footer */
.footer {
    background-color: var(--secondary-color);
    color: var(--text-color);
    padding: 5rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

.footer-section p {
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.75rem;
}

.footer-section ul li a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: var(--primary-color);
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    color: var(--text-light);
    font-size: 1.5rem;
    transition: all 0.3s ease;
}

.social-links a:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    color: var(--text-light);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fadeInUp {
    animation: fadeInUp 0.6s ease forwards;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }

    /* Page Header 响应式样式 */
    .page-header {
        padding: 100px 0 50px;
    }

    .page-header .header-content h1 {
        font-size: 2rem;
        line-height: 1.2;
        margin-bottom: 1rem;
        word-break: keep-all;
    }

    .page-header .header-content p {
        font-size: 1rem;
        padding: 0 1rem;
    }
}

@media (max-width: 480px) {
    .page-header {
        padding: 90px 0 40px;
    }

    .page-header .header-content h1 {
        font-size: 1.8rem;
        line-height: 1.3;
    }

    .page-header .header-content h1 i {
        display: block;
        margin-bottom: 0.5rem;
    }
}

.beian-info {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
}
.beian-link {
    color: var(--text-light);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.2em;
    transition: color 0.2s;
}
.beian-link:hover {
    color: var(--primary-color);
}
.beian-icon {
    width: 16px;
    height: 16px;
    margin-right: 2px;
    vertical-align: middle;
}
.beian-sep {
    color: var(--text-light);
    margin: 0 0.3em;
}

.gradient-logo {
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', Arial, sans-serif;
    font-weight: bold;
    font-size: 1.7rem;
    letter-spacing: 0.02em;
    background: linear-gradient(90deg, #2563EB 0%, #60A5FA 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-fill-color: transparent;
    display: inline-block;
}

/* AI Psychology Strategy Page Styles */
.strategy-overview {
    padding: 80px 0;
    background-color: var(--white);
}

.strategy-intro {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.strategy-intro h2 {
    color: var(--text-color);
    margin-bottom: 2rem;
    font-size: 2rem;
    font-weight: 700;
}

.strategy-intro p {
    color: var(--text-light);
    font-size: 1.1rem;
    line-height: 1.8;
}

.strategy-dimensions {
    padding: 80px 0;
    background-color: var(--background);
}

.dimensions-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
}

.dimension-card {
    background: var(--white);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    border: 1px solid rgba(37, 99, 235, 0.1);
}

.dimension-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.dimension-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--secondary-color);
}

.dimension-header i {
    font-size: 2rem;
    color: var(--primary-color);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--secondary-color);
    border-radius: 12px;
}

.dimension-header h3 {
    color: var(--text-color);
    font-size: 1.3rem;
    font-weight: 600;
    margin: 0;
}

.dimension-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.dimension-item h4 {
    color: var(--text-color);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.dimension-item p {
    color: var(--text-light);
    line-height: 1.6;
    font-size: 0.95rem;
}

.strategy-impact {
    padding: 80px 0;
    background-color: var(--white);
}

.impact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.impact-item {
    text-align: center;
    padding: 2rem 1.5rem;
    background: linear-gradient(135deg, var(--secondary-color) 0%, rgba(96, 165, 250, 0.05) 100%);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.impact-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.impact-item i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.impact-item h3 {
    color: var(--text-color);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.impact-item p {
    color: var(--text-light);
    line-height: 1.6;
    font-size: 0.95rem;
}

.strategy-timeline {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    color: var(--white);
}

.strategy-timeline h2 {
    text-align: center;
    color: var(--white);
    margin-bottom: 3rem;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: rgba(255, 255, 255, 0.3);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 3rem;
    position: relative;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-date {
    width: 120px;
    text-align: center;
    font-weight: 600;
    color: var(--white);
    background: rgba(255, 255, 255, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    backdrop-filter: blur(4px);
}

.timeline-content {
    flex: 1;
    padding: 1.5rem 2rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    margin: 0 2rem;
    backdrop-filter: blur(8px);
}

.timeline-content h4 {
    color: var(--white);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.timeline-content p {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
}

.strategy-cta {
    padding: 80px 0;
    background-color: var(--background);
    text-align: center;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    color: var(--text-color);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-content p {
    color: var(--text-light);
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 2.5rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-buttons .btn {
    min-width: 160px;
}

.strategy-cta .btn-secondary {
    background-color: var(--primary-color);
    color: var(--white);
    border: 2px solid var(--primary-color);
}

.strategy-cta .btn-secondary:hover {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    transform: translateY(-2px);
}

/* Responsive styles for Strategy page */
@media (max-width: 1200px) {
    .dimensions-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
}

@media (max-width: 768px) {
    .dimensions-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .dimension-card {
        padding: 1.5rem;
    }
    
    .impact-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 1.5rem;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        flex-direction: column !important;
        align-items: flex-start;
        padding-left: 40px;
    }
    
    .timeline-date {
        width: auto;
        margin-bottom: 1rem;
    }
    
    .timeline-content {
        margin: 0;
        width: 100%;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-buttons .btn {
        width: 200px;
    }
}

@media (max-width: 480px) {
    .dimensions-grid {
        gap: 1rem;
    }
    
    .dimension-card {
        padding: 1.2rem;
    }
    
    .dimension-header {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }
    
    .dimension-header i {
        width: 40px;
        height: 40px;
        font-size: 1.5rem;
    }
    
    .dimension-header h3 {
        font-size: 1.1rem;
    }
    
    .dimension-item h4 {
        font-size: 1rem;
    }
    
    .dimension-item p {
        font-size: 0.9rem;
    }
}