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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid #e5e5e5;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    width: 32px;
    height: 32px;
    border-radius: 6px;
}

.brand-name {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #4A90E2 0%, #357ABD 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: #4A90E2;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* 主页横幅 */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #4A90E2 0%, #357ABD 100%);
    color: white;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 16px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 24px;
    opacity: 0.9;
}

.hero-description {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 32px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.btn {
    display: inline-block;
    padding: 14px 28px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: white;
    color: #4A90E2;
}

.btn-primary:hover {
    background: #f0f8ff;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #4A90E2;
    transform: translateY(-2px);
}

/* Beta标签样式 */
.beta-notice {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 16px;
}

.beta-tag {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 4px 12px;
    border-radius: 16px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.beta-text {
    font-size: 0.9rem;
    opacity: 0.8;
}

.phone-mockup {
    width: 100%;
    max-width: 300px;
    height: auto;
    margin: 0 auto;
    display: block;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.2));
}

/* 功能特色区域 */
.features {
    padding: 100px 0;
    background: #f8fbff;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 60px;
    color: #333;
}

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

.feature-card {
    background: white;
    padding: 40px;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(74, 144, 226, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #e8f3ff;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(74, 144, 226, 0.15);
    border-color: #4A90E2;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 24px;
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: #333;
}

.feature-card p {
    color: #666;
    line-height: 1.6;
}

/* 技术特点 */
.tech-advantages {
    padding: 80px 0;
    background: white;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.tech-item {
    padding: 30px;
    border: 2px solid #e8f3ff;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.tech-item:hover {
    border-color: #4A90E2;
    background: #f8fbff;
}

.tech-item h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: #333;
}

.tech-item p {
    color: #666;
    line-height: 1.5;
}

/* 下载区域 */
.download {
    padding: 100px 0;
    background: linear-gradient(135deg, #4A90E2 0%, #357ABD 100%);
    color: white;
    text-align: center;
}

.download .section-title {
    color: white;
}

.download-description {
    font-size: 1.2rem;
    margin-bottom: 50px;
    opacity: 0.9;
}

.download-buttons {
    display: flex;
    justify-content: center;
    margin-bottom: 50px;
}

.download-btn-container {
    text-align: center;
}

.download-btn.ios-beta {
    background: white;
    color: #4A90E2;
    padding: 20px 40px;
    border-radius: 12px;
    display: inline-block;
    margin-bottom: 16px;
    transition: transform 0.3s ease;
    border: none;
    cursor: pointer;
    font-family: inherit;
}

.download-btn.ios-beta:hover {
    transform: scale(1.05);
    background: #f0f8ff;
}

.download-note {
    font-size: 0.9rem;
    opacity: 0.8;
    margin: 0;
}

/* 开发状态信息 */
.status-info {
    background: rgba(255, 255, 255, 0.1);
    padding: 30px;
    border-radius: 12px;
    margin-top: 40px;
    text-align: left;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.status-info h4 {
    font-size: 1.2rem;
    margin-bottom: 16px;
    color: white;
}

.status-info ul {
    list-style: none;
    padding: 0;
}

.status-info li {
    padding: 8px 0;
    font-size: 1rem;
    opacity: 0.9;
}

/* 关于应用 */
.about {
    padding: 100px 0;
    background: #f8fbff;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 24px;
    color: #555;
}

/* 开发状态显示 */
.development-status {
    display: flex;
    gap: 40px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.status-item {
    text-align: center;
    min-width: 120px;
}

.status-label {
    display: block;
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 8px;
}

.status-value {
    display: block;
    font-size: 1.1rem;
    font-weight: 600;
    color: #4A90E2;
}

.about-image img {
    width: 100%;
    border-radius: 16px;
    box-shadow: 0 12px 40px rgba(74, 144, 226, 0.1);
}

/* 技术支持 */
.contact {
    padding: 100px 0;
    background: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-item {
    margin-bottom: 40px;
}

.contact-item h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: #333;
}

.contact-item p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 8px;
}

.contact-form {
    background: #f8fbff;
    padding: 40px;
    border-radius: 16px;
    border: 1px solid #e8f3ff;
}

.contact-form h4 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 24px;
    color: #333;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 16px;
    border: 1px solid #e8f3ff;
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: #4A90E2;
}

.contact-form textarea {
    resize: vertical;
    min-height: 120px;
}

/* 页脚 */
.footer {
    background: #2c3e50;
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.footer-logo img {
    width: 32px;
    height: 32px;
    border-radius: 6px;
}

.footer-logo span {
    font-size: 1.25rem;
    font-weight: 600;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 30px;
}

.link-group h5 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: #4A90E2;
}

.link-group ul {
    list-style: none;
}

.link-group li {
    margin-bottom: 8px;
}

.link-group a {
    color: #bbb;
    text-decoration: none;
    transition: color 0.3s ease;
}

.link-group a:hover {
    color: #4A90E2;
}

.footer-bottom {
    border-top: 1px solid #34495e;
    padding-top: 20px;
    text-align: center;
}

.footer-bottom p {
    margin-bottom: 8px;
    color: #bbb;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
}

.modal-content {
    background: white;
    border-radius: 20px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: scale(0.7);
    transition: transform 0.3s ease;
}

.modal.show .modal-content {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 30px;
    border-bottom: 1px solid #f0f0f0;
}

.modal-header h3 {
    margin: 0;
    color: #333;
    font-size: 1.5rem;
    font-weight: 600;
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #999;
    transition: color 0.3s ease;
    padding: 5px;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-btn:hover {
    color: #333;
    background: #f5f5f5;
}

.modal-body {
    padding: 30px;
}

.modal-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    position: relative;
}

.modal-logo {
    width: 60px;
    height: 60px;
    border-radius: 12px;
}

.beta-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background: #4A90E2;
    color: white;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 4px 8px;
    border-radius: 12px;
    letter-spacing: 0.5px;
}

.modal-description {
    text-align: center;
    color: #666;
    margin-bottom: 30px;
    line-height: 1.6;
}

.modal-form {
    max-width: 100%;
}

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

.form-row {
    display: flex;
    gap: 16px;
    margin-bottom: 20px;
}

.form-group-half {
    flex: 1;
    margin-bottom: 0;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e8f3ff;
    border-radius: 8px;
    font-size: 0.95rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #4A90E2;
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 30px;
}

.form-actions .btn {
    flex: 1;
    text-align: center;
}

/* 成功模态框样式 */
.modal-success {
    text-align: center;
}

.success-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.success-message {
    font-size: 1.1rem;
    color: #333;
    margin-bottom: 16px;
    line-height: 1.6;
}

.success-tip {
    color: #666;
    margin-bottom: 30px;
    line-height: 1.6;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 20px 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .tech-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .development-status {
        justify-content: center;
    }

    .modal-content {
        width: 95%;
        margin: 20px;
    }

    .modal-header,
    .modal-body {
        padding: 16px;
    }

    .form-row {
        flex-direction: column;
        gap: 0;
    }

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

    .form-actions {
        flex-direction: column;
    }

    .form-row {
        gap: 12px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .feature-card,
    .tech-item {
        padding: 24px;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 12px;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }

    .beta-notice {
        justify-content: center;
    }

    .development-status {
        flex-direction: column;
        gap: 20px;
    }

    .modal-header,
    .modal-body {
        padding: 16px;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card,
.tech-item {
    animation: fadeInUp 0.6s ease-out;
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}