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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 30px;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-primary {
    background-color: #5a31f4;
    color: white;
    border: none;
}

.btn-primary:hover {
    background-color: #4a21e4;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: white;
    color: #333;
    border: 1px solid #e0e0e0;
}

.btn-secondary:hover {
    background-color: #f5f5f5;
    transform: translateY(-2px);
}

.btn-feature {
    background-color: #5a31f4;
    color: white;
    border: none;
    padding: 12px 24px;
}

.btn-feature:hover {
    background-color: #4a21e4;
}

.btn-light {
    background-color: white;
    color: #5a31f4;
    border: none;
}

.btn-light:hover {
    background-color: rgba(255, 255, 255, 0.9);
}

.btn-outline {
    background-color: transparent;
    color: #5a31f4;
    border: 2px solid #5a31f4;
    padding: 10px 20px;
}

.btn-outline:hover {
    background-color: rgba(90, 49, 244, 0.1);
}

/* 导航栏样式 */
header {
    padding: 20px 0;
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    display: flex;
    align-items: center;
    font-weight: 700;
    font-size: 1.5rem;
    color: #333;
}

.logo svg {
    margin-right: 10px;
}

nav ul {
    display: flex;
    gap: 30px;
}

nav ul li a {
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

nav ul li a:hover {
    color: #5a31f4;
}

.dropdown i {
    font-size: 0.8rem;
    margin-left: 5px;
}

.auth-buttons {
    display: flex;
    align-items: center;
    gap: 20px;
}

.login {
    color: #333;
    font-weight: 500;
}

.login:hover {
    color: #5a31f4;
}

/* 英雄区域样式 */
.hero {
    padding: 60px 0 40px;
    text-align: center;
    background-color: #f5f7ff;
    position: relative;
    overflow: hidden;
}

.hero h1 {
    font-size: 2.8rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 10px;
}

.hero h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #5a31f4;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.1rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto 30px;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 15px;
}

.no-credit {
    font-size: 0.9rem;
    color: #888;
    margin-bottom: 40px;
}

.hero-image {
    max-width: 900px;
    margin: 0 auto;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* 功能区域样式 */
.features {
    padding: 80px 0;
    background: linear-gradient(180deg, #2b0a67 0%, #5a31f4 100%);
    color: white;
    text-align: center;
}

.features h2 {
    font-size: 2.5rem;
    margin-bottom: 50px;
}

.feature-cards {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 50px;
}

.feature-card {
    background-color: white;
    color: #333;
    padding: 30px;
    border-radius: 10px;
    text-align: left;
    flex: 1;
    max-width: 350px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.feature-card .icon {
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.feature-card p {
    color: #666;
}

.cta-center {
    margin-top: 40px;
}

/* 详细功能区域样式 */
.detailed-features {
    padding: 80px 0;
    background-color: #f8f9ff;
}

.detailed-feature {
    display: flex;
    margin-bottom: 60px;
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.detailed-feature:nth-child(even) {
    flex-direction: row-reverse;
}

.feature-content {
    flex: 1;
    padding: 40px;
}

.feature-icon {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.feature-icon svg {
    margin-right: 10px;
}

.feature-icon span {
    font-weight: 600;
    color: #666;
}

.feature-content h3 {
    font-size: 1.8rem;
    margin-bottom: 30px;
}

.feature-details {
    margin-bottom: 30px;
}

.feature-detail {
    margin-bottom: 20px;
}

.feature-detail h4 {
    font-size: 1.2rem;
    margin-bottom: 5px;
    color: #333;
}

.feature-detail p {
    color: #666;
}

.feature-image {
    flex: 1;
    background-color: #f5f7ff;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.feature-image img {
    max-width: 100%;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* 数据统计区域样式 */
.stats {
    padding: 80px 0;
    background-color: #5a31f4;
    color: white;
    text-align: center;
}

.stats h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.stats > p {
    max-width: 800px;
    margin: 0 auto 40px;
    font-size: 1.1rem;
    opacity: 0.9;
}

.review-badges {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 50px;
}

.stat-cards {
    display: flex;
    justify-content: center;
    gap: 30px;
}

.stat-card {
    background-color: white;
    color: #333;
    padding: 30px;
    border-radius: 10px;
    flex: 1;
    max-width: 250px;
}

.stat-card h3 {
    font-size: 2.5rem;
    color: #5a31f4;
    margin-bottom: 10px;
}

.stat-card p {
    color: #666;
}

/* 案例展示区域样式 */
.case-studies {
    padding: 80px 0;
    background-color: #f0f5ff;
}

.case-studies h2 {
    font-size: 2.5rem;
    margin-bottom: 50px;
    text-align: center;
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.case-card {
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    position: relative;
    padding: 30px;
}

.case-tag {
    display: inline-block;
    background-color: #5a31f4;
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.case-card h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    line-height: 1.3;
}

.case-logo {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.case-logo svg {
    margin-right: 10px;
}

.case-logo span {
    font-weight: 600;
}

.case-link {
    color: #5a31f4;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 20px;
}

.case-link:hover {
    text-decoration: underline;
}

.case-image {
    margin-top: 20px;
}

.case-image img {
    border-radius: 8px;
    width: 100%;
}

/* 为什么选择我们区域样式 */
.why-us {
    padding: 80px 0;
    background-color: white;
}

.why-us-content {
    display: flex;
    justify-content: space-between;
    gap: 50px;
}

.why-us-text {
    max-width: 800px;
    margin: 0 auto;
}

.why-us-text h2 {
    font-size: 2.5rem;
    margin-bottom: 30px;
    line-height: 1.2;
}

.why-us-details {
    margin-bottom: 30px;
}

.why-us-details p {
    margin-bottom: 20px;
    color: #666;
}

/* 社会责任区域样式 */
.social-responsibility {
    padding: 80px 0;
    background-color: #f0f5ff;
}

.responsibility-content {
    display: flex;
    gap: 50px;
}

.responsibility-text {
    flex: 1;
}

.responsibility-text h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    line-height: 1.3;
}

.responsibility-text p {
    color: #666;
    margin-bottom: 30px;
}

.responsibility-details {
    flex: 1;
}

.responsibility-detail {
    margin-bottom: 30px;
}

.responsibility-detail h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: #5a31f4;
}

.responsibility-detail p {
    color: #666;
}

/* 最终CTA区域样式 */
.final-cta {
    padding: 100px 0;
    background: linear-gradient(135deg, #2b0a67 0%, #5a31f4 100%);
    color: white;
    text-align: center;
}

.final-cta h2 {
    font-size: 2.5rem;
    margin-bottom: 30px;
}

/* 页脚样式 */
footer {
    background-color: #1a1a2e;
    color: white;
    padding: 80px 0 30px;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    margin-bottom: 50px;
}

.footer-logo {
    max-width: 300px;
}

.footer-logo svg {
    margin-bottom: 15px;
}

.footer-logo span {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.footer-logo p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

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

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background-color: #5a31f4;
    transform: translateY(-3px);
}

.footer-links {
    display: flex;
    justify-content: space-between;
    margin-bottom: 50px;
}

.footer-column {
    flex: 1;
    max-width: 200px;
}

.footer-column h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: white;
}

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

.footer-column ul li a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s ease;
}

.footer-column ul li a:hover {
    color: white;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

.footer-bottom-links {
    display: flex;
    gap: 20px;
}

.footer-bottom-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s ease;
}

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

.back-to-top {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s ease;
}

.back-to-top:hover {
    color: white;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .feature-cards {
        flex-direction: column;
        align-items: center;
    }
    
    .feature-card {
        max-width: 100%;
        width: 100%;
    }
    
    .detailed-feature {
        flex-direction: column;
    }
    
    .detailed-feature:nth-child(even) {
        flex-direction: column;
    }
    
    .stat-cards {
        flex-wrap: wrap;
    }
    
    .stat-card {
        min-width: 45%;
    }
    
    .case-grid {
        grid-template-columns: 1fr;
    }
    
    .responsibility-content {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 20px;
    }
    
    nav ul {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .auth-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .footer-top {
        flex-direction: column;
        gap: 30px;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 30px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}