:root {
    --primary-color: #4a90e2;
    --secondary-color: #2c3e50;
    --text-color: #333;
    --light-gray: #f5f6fa;
    --border-radius: 8px;
}

* {
    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: var(--text-color);
}

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

/* 导航栏样式 */
.header {
    background: linear-gradient(135deg, #6e8efb, #4a90e2);
    color: white;
    padding-bottom: 100px;
}

.nav {
    padding: 20px 0;
}

.nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo img {
    height: 40px;
}

.logo h1 {
    font-size: 24px;
    font-weight: 600;
}

.nav-links a {
    color: white;
    text-decoration: none;
    margin-left: 30px;
    font-weight: 500;
}

/* 英雄区域样式 */
.hero {
    padding: 60px 0;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.hero-content h2 {
    font-size: 48px;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: flex-start;
    align-items: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    min-width: 180px;
}

.btn-primary {
    background-color: white;
    color: var(--primary-color);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 8px rgba(0, 0, 0, 0.15);
}

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

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.hero-image img {
    width: 100%;
    border-radius: var(--border-radius);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* 功能特色区域 */
.features {
    padding: 100px 0;
    background-color: var(--light-gray);
}

.section-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 60px;
}

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

.feature-card {
    background: white;
    padding: 30px;
    border-radius: var(--border-radius);
    text-align: center;
    transition: transform 0.3s ease;
}

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

.feature-icon {
    font-size: 40px;
    margin-bottom: 20px;
}

.feature-card h3 {
    margin-bottom: 15px;
    color: var(--secondary-color);
}

/* 下载区域样式 */
.download {
    padding: 100px 0;
}

.download-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    justify-content: center;
    max-width: 1100px;
    margin: 0 auto;
}

.download-card {
    background: var(--light-gray);
    padding: 40px 30px;
    border-radius: var(--border-radius);
    text-align: center;
    transition: transform 0.3s ease;
}

.download-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.download-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.download-card h3 {
    margin-bottom: 15px;
    color: var(--secondary-color);
}

.download-card p {
    margin-bottom: 25px;
    color: #666;
}

.btn-download {
    background-color: var(--primary-color);
    color: white;
    padding: 15px 40px;
}

.btn-download:hover {
    background-color: #357abd;
}

.btn-download.disabled {
    background-color: #a0a0a0;
    cursor: default;
    opacity: 0.7;
}

.btn-download.disabled:hover {
    background-color: #a0a0a0;
    transform: none;
}

/* 添加提示样式 */
.download-card a.disabled {
    position: relative;
}

.download-card a.disabled:hover::after {
    content: "其他版本正在开发中";
    position: absolute;
    bottom: 120%;
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 8px 12px;
    border-radius: 4px;
    font-size: 14px;
    white-space: nowrap;
    pointer-events: none;
}

/* 页脚样式 */
.footer {
    background-color: var(--secondary-color);
    color: white;
    padding: 30px 0;
    text-align: center;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content h2 {
        font-size: 36px;
    }

    .cta-buttons {
        justify-content: center;
    }

    .nav .container {
        flex-direction: column;
        gap: 20px;
    }

    .nav-links {
        display: flex;
        gap: 20px;
    }

    .nav-links a {
        margin-left: 0;
    }
}