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

body {
    font-family: 'Microsoft YaHei', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

/* 图标样式 */
.fas {
    color: #2b6cb0;
}

.feature-icon .fas {
    color: #2b6cb0;
}

.download-card.featured .fas {
    color: white;
}

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

a {
    text-decoration: none;
    color: #2b6cb0;
}

ul {
    list-style: none;
}

.section-title {
    text-align: center;
    margin-bottom: 40px;
    font-size: 2.5rem;
    color: #1a365d;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 5px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: #2b6cb0;
    color: white;
    border: none;
}

.btn-primary:hover {
    background-color: #1a365d;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: #4a5568;
    color: white;
    border: none;
}

.btn-secondary:hover {
    background-color: #2d3748;
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    color: #2b6cb0;
    border: 1px solid #2b6cb0;
}

.btn-outline:hover {
    background-color: #2b6cb0;
    color: white;
}

.section-footer {
    text-align: center;
    margin-top: 30px;
}

/* 免责声明横幅 */
.disclaimer-banner {
    background-color: #fed7d7;
    color: #c53030;
    padding: 10px 0;
    font-size: 0.9rem;
}

.disclaimer-banner p {
    text-align: center;
    margin: 0;
}

.disclaimer-box {
    background-color: #f8f9fa;
    border-radius: 5px;
    padding: 15px;
    margin-top: 20px;
    border-left: 4px solid #2b6cb0;
}

.disclaimer-box h4 {
    color: #1a365d;
    margin-bottom: 10px;
}

.disclaimer-text {
    font-size: 0.8rem;
    color: #718096;
    margin-top: 10px;
}

/* 头部样式 */
header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

header h1 {
    color: #1a365d;
}

nav ul {
    display: flex;
}

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    color: #1a365d;
    font-weight: 500;
    padding: 5px 10px;
    border-radius: 5px;
    transition: all 0.3s ease;
}

nav ul li a:hover {
    background-color: #e6f0ff;
}

/* 英雄区域样式 */
.hero {
    background: linear-gradient(135deg, #2b6cb0, #1a365d);
    color: white;
    padding: 100px 0;
    text-align: center;
}

.hero-content h2 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* 工具集区域样式 */
.tools {
    padding: 80px 0;
    background-color: white;
}

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

.tool-card {
    background-color: #f8f9fa;
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
}

.tool-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.tool-card:hover .fas {
    transform: scale(1.1);
    color: #1a365d;
}

.tool-icon {
    margin: 0 auto 20px;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f0f5ff;
    border-radius: 50%;
    padding: 15px;
    transition: all 0.3s ease;
}

.tool-card:hover .tool-icon {
    background-color: #e6f0ff;
}

.tool-card h3 {
    color: #1a365d;
    margin-bottom: 15px;
}

.tool-card p {
    margin-bottom: 20px;
}

/* 功能区域样式 */
.features {
    padding: 80px 0;
    background-color: #f0f5ff;
}

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

.feature-card {
    background-color: white;
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.feature-card:hover .fas {
    transform: scale(1.1);
    color: #1a365d;
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f0f5ff;
    border-radius: 50%;
    padding: 15px;
    transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
    background-color: #e6f0ff;
}

.feature-icon img {
    max-width: 100%;
    max-height: 100%;
}

.feature-card h3 {
    color: #1a365d;
    margin-bottom: 15px;
}

/* 下载区域样式 */
.download {
    padding: 80px 0;
    background-color: white;
}

.download-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.download-card {
    background-color: #f8f9fa;
    border-radius: 10px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.download-card.featured {
    background-color: #2b6cb0;
    color: white;
    transform: scale(1.05);
}

.download-card.featured h3 {
    color: white;
}

.download-card h3 {
    color: #1a365d;
    margin-bottom: 15px;
    font-size: 1.5rem;
}

.download-card p {
    margin-bottom: 20px;
}

.download-card ul {
    margin-bottom: 30px;
    padding: 0 20px;
    list-style: disc;
    text-align: left;
}

.download-card ul li {
    margin-bottom: 10px;
    position: relative;
}

.download-card.featured .btn-primary {
    background-color: white;
    color: #2b6cb0;
}

.download-card.featured .btn-primary:hover {
    background-color: #e6f0ff;
}

/* 注册区域样式 */
.register {
    padding: 80px 0;
    background-color: #f0f5ff;
}

.register-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 50px;
    align-items: start;
}

.register-info h3 {
    color: #1a365d;
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.register-info ol {
    padding-left: 20px;
    margin-bottom: 20px;
}

.register-info ol li {
    margin-bottom: 15px;
}

.register-form {
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.register-form h3 {
    color: #1a365d;
    margin-bottom: 20px;
    font-size: 1.5rem;
    text-align: center;
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

.license-status {
    margin-top: 20px;
    padding: 15px;
    border-radius: 5px;
    background-color: #e6f0ff;
    display: none;
}

/* 联系我们区域样式 */
.contact {
    padding: 80px 0;
    background-color: white;
}

.contact-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.contact-method {
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    text-align: center;
}

.contact-method h3 {
    color: #1a365d;
    margin-bottom: 15px;
}

.contact-method p {
    margin-bottom: 10px;
}

.contact-method .fas {
    margin-right: 8px;
    color: #2b6cb0;
}

/* 页脚样式 */
footer {
    background-color: #1a365d;
    color: white;
    padding: 50px 0 20px;
}

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

.footer-logo h2 {
    margin-bottom: 10px;
}

.footer-links h3, 
.footer-newsletter h3 {
    margin-bottom: 20px;
}

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

.footer-links ul li a {
    color: #e6f0ff;
}

.footer-newsletter p {
    margin-bottom: 15px;
}

.footer-newsletter form {
    display: flex;
}

.footer-newsletter input {
    flex: 1;
    padding: 10px;
    border: none;
    border-radius: 5px 0 0 5px;
}

.footer-newsletter .btn {
    border-radius: 0 5px 5px 0;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-links a:hover {
    color: white;
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
    }
    
    nav ul {
        margin-top: 20px;
    }
    
    .hero {
        padding: 60px 0;
    }
    
    .hero-content h2 {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .download-card.featured {
        transform: none;
    }
    
    .footer-newsletter form {
        flex-direction: column;
    }
    
    .footer-newsletter input {
        border-radius: 5px;
        margin-bottom: 10px;
    }
    
    .footer-newsletter .btn {
        border-radius: 5px;
    }
}