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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: #e1e1e1;
    background-color: #36393f;
    overflow-x: hidden;
}

/* 导航栏 */
.navbar {
    background-color: #202225;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.navbar .logo {
    color: #ffffff;
    font-size: 1.8rem;
    font-weight: 700;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar .logo span {
    color: #5865f2;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: #b9bbbe;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #ffffff;
}

.nav-buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 0.5rem 1.5rem;
    border: none;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background-color: #5865f2;
    color: white;
}

.btn-primary:hover {
    background-color: #4752c4;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(88, 101, 242, 0.4);
}

.btn-secondary {
    background-color: transparent;
    color: white;
    border: 1px solid #5865f2;
}

.btn-secondary:hover {
    background-color: rgba(88, 101, 242, 0.1);
}

/* 英雄区域 */
.hero {
    background: linear-gradient(135deg, #5865f2 0%, #7289da 100%);
    padding: 4rem 2rem;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect width="100" height="100" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></svg>');
    opacity: 0.3;
}

.hero-container {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 3rem;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-content {
    flex: 1;
    max-width: 500px;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    color: white;
    line-height: 1.2;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.9);
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

/* 特性部分 */
.features {
    padding: 4rem 2rem;
    background-color: #202225;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: white;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background-color: #2f3136;
    padding: 2rem;
    border-radius: 8px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #5865f2;
}

.feature-card p {
    color: #b9bbbe;
}

/* 下载部分 */
.download {
    padding: 4rem 2rem;
    background-color: #36393f;
    text-align: center;
}

.download h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: white;
}

.download p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: #b9bbbe;
}

.download-cards {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    max-width: 1000px;
    margin: 0 auto;
}

.download-card {
    background-color: #2f3136;
    padding: 2rem;
    border-radius: 8px;
    width: 250px;
    transition: transform 0.3s ease;
}

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

.download-card h3 {
    margin-bottom: 1rem;
    color: white;
}

/* 常见问题部分 */
.faq {
    padding: 4rem 2rem;
    background-color: #202225;
}

.faq h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: white;
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 1.5rem;
}

.faq-question {
    background-color: #2f3136;
    padding: 1.5rem;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.3s ease;
}

.faq-question:hover {
    background-color: #393c43;
}

.faq-question h3 {
    font-size: 1.1rem;
    color: white;
}

.faq-answer {
    background-color: #36393f;
    padding: 1.5rem;
    border-radius: 0 0 4px 4px;
    margin-top: 1px;
    color: #b9bbbe;
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}

.faq-icon {
    transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

/* 更新公告部分 */
.updates {
    padding: 4rem 2rem;
    background-color: #2f3136;
}

.updates h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: white;
}

.update-list {
    max-width: 800px;
    margin: 0 auto;
}

.update-item {
    background-color: #36393f;
    padding: 2rem;
    margin-bottom: 2rem;
    border-radius: 8px;
    border-left: 4px solid #5865f2;
}

.update-date {
    color: #5865f2;
    font-weight: 600;
    margin-bottom: 1rem;
}

.update-title {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: white;
}

.update-content {
    color: #b9bbbe;
}

/* 联系方式部分 */
.contact {
    padding: 4rem 2rem;
    background-color: #202225;
}

.contact h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: white;
}

.contact-container {
    display: flex;
    flex-wrap: wrap;
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    flex: 1;
    min-width: 300px;
}

.contact-info h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: white;
}

.contact-item {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.contact-item i {
    color: #5865f2;
    font-size: 1.2rem;
    margin-top: 0.2rem;
}

.contact-form {
    flex: 1;
    min-width: 300px;
    background-color: #2f3136;
    padding: 2rem;
    border-radius: 8px;
}

.contact-form h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: white;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #b9bbbe;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    background-color: #36393f;
    border: 1px solid #4f545c;
    border-radius: 4px;
    color: white;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #5865f2;
}

/* 页脚 */
.footer {
    background-color: #202225;
    padding: 3rem 2rem;
    border-top: 1px solid #2f3136;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.footer-column h3 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    color: white;
}

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

.footer-column ul li {
    margin-bottom: 0.8rem;
}

.footer-column ul li a {
    color: #b9bbbe;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-column ul li a:hover {
    color: #5865f2;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    margin-top: 2rem;
    border-top: 1px solid #2f3136;
    color: #b9bbbe;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-content {
        max-width: 100%;
        order: 2;
    }
    
    .hero-image {
        order: 1;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .nav-links {
        display: none;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-container {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
}