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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #1e293b;
    background-color: #ffffff;
}

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

/* 按钮样式 */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 600;
    color: #ffffff;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 600;
    color: #6366f1;
    background: transparent;
    border: 2px solid #6366f1;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn-secondary:hover {
    color: #ffffff;
    background: #6366f1;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.navbar-brand .logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 20px;
    font-weight: 700;
    color: #1e293b;
}

.navbar-brand .logo svg {
    width: 28px;
    height: 28px;
    color: #6366f1;
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: 24px;
}

.nav-link {
    text-decoration: none;
    color: #475569;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #6366f1;
}

.navbar-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.navbar-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: #1e293b;
    border-radius: 2px;
}

/* Hero区域 */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #f0f4ff 0%, #e0e7ff 50%, #faf5ff 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text .badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    color: #6366f1;
    margin-bottom: 20px;
}

.hero-text h1 {
    font-size: 42px;
    font-weight: 800;
    color: #1e293b;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-text p {
    font-size: 16px;
    color: #64748b;
    margin-bottom: 30px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 40px;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat-item {
    text-align: left;
}

.stat-item strong {
    display: block;
    font-size: 28px;
    font-weight: 700;
    color: #6366f1;
    margin-bottom: 4px;
}

.stat-item span {
    font-size: 13px;
    color: #94a3b8;
}

.hero-visual {
    position: relative;
}

.hero-card {
    background: #ffffff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(99, 102, 241, 0.15);
}

.card-header {
    display: flex;
    gap: 8px;
    padding: 12px 16px;
    background: #f8fafc;
}

.card-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #e2e8f0;
}

.card-dot:first-child {
    background: #ef4444;
}

.card-dot:nth-child(2) {
    background: #f59e0b;
}

.card-dot:last-child {
    background: #22c55e;
}

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

.floating-elements {
    position: absolute;
    top: 50%;
    right: -60px;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.float-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: #ffffff;
    border-radius: 10px;
    font-size: 12px;
    font-weight: 500;
    color: #475569;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    animation: float 3s ease-in-out infinite;
}

.float-item:nth-child(2) {
    animation-delay: 0.5s;
}

.float-item:nth-child(3) {
    animation-delay: 1s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* 核心功能 */
.features {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 32px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 12px;
}

.section-header p {
    font-size: 16px;
    color: #64748b;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: #ffffff;
    padding: 32px;
    border-radius: 16px;
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 40px rgba(99, 102, 241, 0.1);
    border-color: #ddd6fe;
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border-radius: 14px;
    margin-bottom: 20px;
}

.feature-icon svg {
    width: 28px;
    height: 28px;
    color: #6366f1;
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 14px;
    color: #64748b;
    line-height: 1.6;
}

/* 平台优势 */
.advantages {
    padding: 80px 0;
    background: #f8fafc;
}

.advantages-content {
    max-width: 800px;
    margin: 0 auto;
}

.advantage-item {
    display: flex;
    gap: 20px;
    padding: 32px 0;
    border-bottom: 1px solid #e2e8f0;
}

.advantage-item:last-child {
    border-bottom: none;
}

.advantage-number {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    border-radius: 12px;
    font-size: 18px;
    font-weight: 700;
    color: #ffffff;
}

.advantage-info h3 {
    font-size: 20px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 8px;
}

.advantage-info p {
    font-size: 15px;
    color: #64748b;
    line-height: 1.6;
}

/* 产品演示视频 */
.video-section {
    padding: 80px 0;
    background: #f8fafc;
}

.video-container {
    max-width: 800px;
    margin: 0 auto;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(99, 102, 241, 0.15);
}

.video-container iframe {
    width: 100%;
    height: 450px;
    border: none;
}

/* 联系我们 */
.contact {
    padding: 80px 0;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
}

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

.contact-info h2 {
    font-size: 32px;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 16px;
}

.contact-info p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 30px;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    color: rgba(255, 255, 255, 0.9);
}

.contact-icon {
    font-size: 20px;
}

.wechat-qr {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    margin-top: 8px;
}

.qr-code {
    width: 120px;
    height: 120px;
    border-radius: 10px;
    background: #ffffff;
    padding: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.qr-label {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.8);
}

.contact-form {
    background: #ffffff;
    border-radius: 16px;
    padding: 40px;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.3s ease;
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: #6366f1;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #94a3b8;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.contact-form button {
    width: 100%;
}

/* 页脚 */
.footer {
    background: #1e293b;
    padding: 60px 0 30px;
}

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

.footer-brand .logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 20px;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 16px;
}

.footer-brand .logo svg {
    width: 28px;
    height: 28px;
    color: #6366f1;
}

.footer-brand p {
    font-size: 14px;
    color: #94a3b8;
    line-height: 1.6;
}

.footer-links h4 {
    font-size: 14px;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 16px;
}

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

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

.footer-links a {
    font-size: 14px;
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    padding-top: 20px;
    border-top: 1px solid #334155;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: #64748b;
}

/* 下载页面样式 */
.download-hero {
    padding: 100px 0 60px;
}

.download-hero .hero-content {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.download-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border-radius: 24px;
    margin: 0 auto;
}

.download-icon svg {
    width: 50px;
    height: 50px;
    color: #6366f1;
}

.nav-link.active {
    color: #6366f1;
    font-weight: 600;
}

/* 下载区域 */
.download-section {
    padding: 80px 0;
}

.download-grid {
    display: flex;
    justify-content: center;
    gap: 30px;
}

.download-card {
    background: #ffffff;
    padding: 50px 60px;
    border-radius: 24px;
    border: 2px solid #e2e8f0;
    text-align: center;
    transition: all 0.3s ease;
    max-width: 480px;
    width: 100%;
}

.download-card.main {
    border-color: #8b5cf6;
    box-shadow: 0 8px 32px rgba(139, 92, 246, 0.18);
    background: linear-gradient(180deg, #ffffff 0%, #f5f3ff 100%);
}

.download-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 15px 40px rgba(99, 102, 241, 0.1);
    border-color: #ddd6fe;
}

.download-icon-box {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    border-radius: 16px;
    margin: 0 auto 20px;
}

.download-icon-box.update {
    background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
}

.download-icon-box svg {
    width: 32px;
    height: 32px;
    color: #ffffff;
}

.version-badge {
    display: inline-block;
    padding: 4px 12px;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    color: #ffffff;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 12px;
}

.download-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 8px;
}

.version-info,
.size-info {
    font-size: 13px;
    color: #94a3b8;
    margin-bottom: 4px;
}

.download-card .description {
    font-size: 14px;
    color: #64748b;
    margin-bottom: 24px;
    line-height: 1.6;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.download-btn svg {
    width: 18px;
    height: 18px;
}

/* 系统要求 */
.system-requirements {
    padding: 80px 0;
    background: #f8fafc;
}

.req-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.req-item {
    background: #ffffff;
    padding: 30px;
    border-radius: 16px;
    border: 1px solid #e2e8f0;
}

.req-icon {
    font-size: 32px;
    margin-bottom: 16px;
}

.req-item h4 {
    font-size: 16px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 12px;
}

.req-item ul {
    list-style: none;
    padding-left: 0;
}

.req-item li {
    padding: 6px 0;
    font-size: 14px;
    color: #64748b;
    position: relative;
    padding-left: 16px;
}

.req-item li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #22c55e;
    font-size: 12px;
}

/* 更新日志 */
.changelog {
    padding: 80px 0;
    background: #ffffff;
}

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

.changelog-item {
    background: #ffffff;
    padding: 32px;
    border-radius: 16px;
    border: 1px solid #e2e8f0;
}

.changelog-date {
    font-size: 13px;
    font-weight: 600;
    color: #6366f1;
    margin-bottom: 16px;
}

.changelog-content h4 {
    font-size: 18px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 12px;
}

.changelog-content ul {
    list-style: none;
    padding-left: 0;
}

.changelog-content li {
    padding: 8px 0;
    font-size: 15px;
    color: #475569;
    position: relative;
    padding-left: 20px;
}

.changelog-content li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #22c55e;
    font-weight: 600;
}

/* 安装指南 */
.install-guide {
    padding: 80px 0;
}

.guide-steps {
    max-width: 800px;
    margin: 0 auto;
}

.guide-step {
    display: flex;
    gap: 20px;
    padding: 24px 0;
    border-bottom: 1px solid #e2e8f0;
}

.guide-step:last-child {
    border-bottom: none;
}

.step-number {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    border-radius: 10px;
    font-size: 16px;
    font-weight: 700;
    color: #ffffff;
}

.step-content h4 {
    font-size: 18px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 4px;
}

.step-content p {
    font-size: 15px;
    color: #64748b;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .download-hero .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .download-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .floating-elements {
        display: none;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .navbar-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        gap: 12px;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        display: none;
    }
    
    .navbar-menu.active {
        display: flex;
    }
    
    .navbar-toggle {
        display: flex;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-text h1 {
        font-size: 32px;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-text h1 {
        font-size: 28px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .stat-item {
        text-align: center;
    }
    
    .feature-card,
    .pricing-card {
        padding: 24px;
    }
    
    .contact-form {
        padding: 24px;
    }
}