/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #722ED1;
    --primary-light: #9254DE;
    --primary-dark: #531DAB;
    --text-color: #333;
    --text-light: #666;
    --bg-color: #fff;
    --bg-light: #f8f9fa;
    --border-color: #e8e8e8;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: var(--bg-color);
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-logo {
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

.nav-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: var(--primary-color);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-color);
    border-radius: 2px;
}

/* Hero 区域 */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #f5f0ff 0%, #fff 100%);
    text-align: center;
}

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

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 20px;
}

.hero-title .highlight {
    color: var(--primary-color);
}

.hero-subtitle {
    font-size: 1.8rem;
    color: var(--text-light);
    margin-bottom: 10px;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-image {
    margin-top: 60px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.hero-image img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(114, 46, 209, 0.15);
}

/* 按钮 */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--primary-color);
    color: #fff;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(114, 46, 209, 0.3);
}

.btn-secondary {
    background: #fff;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-light);
    color: #fff;
    border-color: var(--primary-light);
}

/* 功能特性 */
.features {
    padding: 100px 0;
    background: var(--bg-light);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 60px;
}

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

.feature-card {
    background: #fff;
    padding: 40px 30px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(114, 46, 209, 0.1);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.8;
}

/* 下载区域 */
.download {
    padding: 100px 0;
    text-align: center;
}

.download-cards {
    display: flex;
    gap: 30px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

.download-card {
    background: var(--bg-light);
    padding: 40px;
    border-radius: 12px;
    width: 300px;
    text-align: center;
}

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

.download-card h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.download-card p {
    color: var(--text-light);
    margin-bottom: 20px;
}

.download-note {
    color: var(--text-light);
}

.download-note a {
    color: var(--primary-color);
    text-decoration: none;
}

.download-note a:hover {
    text-decoration: underline;
}

/* 截图展示 */
.screenshots {
    padding: 100px 0;
    background: var(--bg-light);
}

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

.screenshot-item {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.screenshot-item:hover {
    transform: scale(1.02);
}

.screenshot-item img {
    width: 100%;
    display: block;
}

/* 页脚 */
.footer {
    background: #1a1a1a;
    color: #fff;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--primary-light);
}

.footer-section p {
    color: #999;
    line-height: 1.8;
}

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

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

.footer-section ul li a {
    color: #999;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: var(--primary-light);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #333;
}

.footer-bottom p {
    color: #666;
    margin-bottom: 10px;
}

.footer-bottom a {
    color: var(--primary-light);
    text-decoration: none;
}

.footer-bottom a:hover {
    text-decoration: underline;
}

/* 响应式 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.3rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }

    .download-cards {
        flex-direction: column;
        align-items: center;
    }

    .screenshot-gallery {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}