/* 基础样式 */
body {
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #0D1B41, #1E90FF);
    color: #FFFFFF;
    line-height: 1.6;
    overflow-x: hidden;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(13, 27, 65, 0.9);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 50px;
    z-index: 1000;
}

.navbar-logo {
    font-size: 24px;
    font-weight: bold;
    color: #FFA500;
}

.navbar-menu {
    list-style: none;
    display: flex;
    gap: 20px;
}

.navbar-menu li a {
    color: #FFFFFF;
    text-decoration: none;
    font-size: 16px;
    transition: color 0.3s;
}

.navbar-menu li a:hover {
    color: #FFA500;
}

/* 主页简介模块 */
.hero-section {
    height: 100vh;
    background: url('https://images.gptkong.com/demo/sample1.png') center center / cover no-repeat;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
}

.hero-section::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle, rgba(13, 27, 65, 0.8), transparent);
}

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

.hero-title {
    font-size: 48px;
    font-weight: bold;
    background: linear-gradient(90deg, #FFA500, #1E90FF);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 24px;
    max-width: 600px;
}

.hero-button {
    margin-top: 30px;
}

.fintech-button {
    background-color: #FFA500;
    color: #000000;
    border: none;
    padding: 15px 30px;
    font-size: 18px;
    font-weight: bold;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.3s;
}

.fintech-button:hover {
    background-color: #FF8C00;
    transform: scale(1.05);
}

/* 关于我们模块 */
.about-section {
    padding: 100px 50px;
    background: #1E90FF;
    display: flex;
    align-items: center;
    gap: 50px;
}

.about-image {
    flex: 1;
}

.about-image img {
    width: 100%;
    border-radius: 10px;
}

.about-content {
    flex: 2;
}

.about-content h2 {
    font-size: 36px;
    margin-bottom: 20px;
    color: #FFA500;
}

.about-content p {
    font-size: 18px;
    color: #FFFFFF;
}

/* 核心功能模块 */
.features-section {
    padding: 100px 50px;
    background: #0D1B41;
}

.features-section h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    color: #FFA500;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: #1E90FF;
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card img {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #FFFFFF;
}

.feature-card p {
    font-size: 16px;
    color: #FFFFFF;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

/* 成功案例模块 */
.case-section {
    padding: 100px 50px;
    background: #1E90FF;
}

.case-section h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    color: #FFA500;
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.case-card {
    background: #0D1B41;
    padding: 20px;
    border-radius: 10px;
    text-align: center;
}

.case-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 20px;
}

.case-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #FFFFFF;
}

.case-card p {
    font-size: 16px;
    color: #FFFFFF;
}

/* 数据可视化模块 */
.data-section {
    padding: 100px 50px;
    background: #0D1B41;
}

.data-section h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    color: #FFA500;
}

.chart-container {
    display: flex;
    justify-content: center;
    gap: 50px;
}

.chart {
    width: 300px;
    height: 200px;
    background: #1E90FF;
    border-radius: 10px;
    position: relative;
    padding: 20px;
}

.chart::before {
    content: "";
    position: absolute;
    bottom: 10px;
    left: 10px;
    width: calc(100% - 20px);
    height: calc(100% - 20px);
    border: 2px solid #FFA500;
    border-radius: 10px;
}

/* 安全保障模块 */
.security-section {
    padding: 100px 50px;
    background: #1E90FF;
}

.security-section h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    color: #FFA500;
}

.security-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.security-content img {
    width: 300px;
    border-radius: 10px;
}

.security-text {
    flex: 1;
}

.security-text p {
    font-size: 18px;
    color: #FFFFFF;
    margin-bottom: 20px;
}

/* 固定导航栏高亮 */
.nav-active {
    color: #FFA500 !important;
}

/* 脚注 */
.footer {
    padding: 50px;
    background: #0D1B41;
    text-align: center;
    color: #FFFFFF;
}

.footer p {
    margin: 0;
    font-size: 16px;
}

/* 响应式设计 */
@media (max-width: 1440px) {
    .navbar {
        padding: 15px 30px;
    }

    .hero-title {
        font-size: 40px;
    }

    .hero-subtitle {
        font-size: 20px;
    }

    .features-grid, .case-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .chart-container {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 1200px) {
    .features-grid, .case-grid {
        grid-template-columns: 1fr;
    }

    .data-section .chart-container {
        flex-direction: column;
        gap: 30px;
    }
}

@media (max-width: 1024px) {
    .about-section, .security-content {
        flex-direction: column;
        text-align: center;
    }

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

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        align-items: flex-start;
    }

    .navbar-menu {
        flex-direction: column;
        width: 100%;
    }

    .navbar-menu li {
        width: 100%;
        text-align: left;
    }

    .hero-title {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

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

    .chart-container {
        flex-direction: column;
        align-items: center;
    }

    .about-section, .security-content {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 24px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

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

    .navbar {
        padding: 10px 20px;
    }

    .navbar-logo {
        font-size: 20px;
    }

    .navbar-menu li a {
        font-size: 14px;
    }
}

@media (max-width: 320px) {
    .hero-title {
        font-size: 20px;
    }

    .hero-subtitle {
        font-size: 14px;
    }

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

    .navbar {
        padding: 10px;
    }
}

/* 代码块样式 */
pre {
    background: #0D1B41;
    padding: 20px;
    border-radius: 10px;
    overflow-x: auto;
}

code {
    color: #FFA500;
    font-family: 'Courier New', Courier, monospace;
    font-size: 16px;
}

/* 动画效果 */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInAnimation 1s forwards;
}

@keyframes fadeInAnimation {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 提示信息 */
.reference-note {
    text-align: center;
    padding: 20px;
    background: rgba(255, 165, 0, 0.2);
    font-size: 18px;
    color: #FFFFFF;
}

/* 链接样式 */
a {
    color: #FFA500;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}