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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    color: #fff;
    line-height: 1.6;
}

body.dark-theme {
    background-color: #1a1a1a;
    min-height: 100vh;
}

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

/* 头部样式 */
.header {
    background-color: transparent;
    padding: 20px 0;
    box-shadow: none;
}

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

.logo-text {
    font-size: 18px;
    font-weight: 500;
    color: #fff;
}

.nav {
    display: flex;
    gap: 15px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
    color: #fff;
    font-size: 14px;
    padding: 8px 16px;
    border-radius: 8px;
    transition: all 0.3s;
    background-color: transparent;
}

.nav-link.active {
    background-color: #FF7F27;
    color: #fff;
    font-weight: 500;
}

.nav-link:not(.active):hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.nav-icon {
    font-size: 16px;
}

/* 主内容区域 */
.main {
    min-height: calc(100vh - 200px);
    padding: 40px 0 60px;
}

/* 首页样式 */
.hero {
    text-align: center;
    padding: 40px 0 60px;
    background-color: transparent;
}

.app-logo {
    width: 80px;
    height: 80px;
    margin: 0 auto 30px;
    background-color: #FF7F27;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 15px;
}

.app-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.hero-title {
    font-size: 42px;
    font-weight: bold;
    margin-bottom: 20px;
    color: #fff;
}

.hero-description {
    font-size: 16px;
    color: #ccc;
    line-height: 1.8;
    max-width: 600px;
    margin: 0 auto;
}

/* 下载区 */
.download-section {
    text-align: center;
    padding: 40px 0;
}

.download-icon-box {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background-color: #FF7F27;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.download-icon-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.download-title {
    font-size: 32px;
    font-weight: bold;
    color: #fff;
    margin-bottom: 10px;
}

.download-hint {
    font-size: 14px;
    color: #999;
}

/* 联系我们区 */
.contact-section {
    background-color: #2a2a2a;
    border-radius: 16px;
    padding: 40px 30px;
    margin: 40px 0;
    text-align: center;
}

.contact-icon-box {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background-color: #FF7F27;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.contact-icon-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.contact-title {
    font-size: 32px;
    font-weight: bold;
    color: #fff;
    margin-bottom: 30px;
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    font-size: 16px;
}

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

.contact-item-text {
    color: #fff;
}

/* 关于我们区 */
.about-section {
    text-align: center;
    padding: 40px 0;
}

.about-icon-box {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background-color: #FF7F27;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.about-icon-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.about-title {
    font-size: 32px;
    font-weight: bold;
    color: #fff;
    margin-bottom: 20px;
}

.about-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: #fff;
    font-size: 16px;
    max-width: 600px;
    margin: 0 auto;
}

.about-item-icon {
    font-size: 20px;
    flex-shrink: 0;
}

.about-item-text {
    color: #fff;
}

/* 隐私策略页面样式 */
.privacy-content {
    background-color: transparent;
    padding: 40px 20px;
    max-width: 900px;
    margin: 0 auto;
}

.privacy-content h1 {
    font-size: 36px;
    margin-bottom: 30px;
    color: #fff;
    text-align: center;
}

.privacy-section {
    margin-bottom: 40px;
}

.privacy-section h2 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #fff;
    padding-top: 20px;
}

.privacy-section p {
    font-size: 16px;
    color: #ccc;
    margin-bottom: 15px;
    line-height: 1.8;
}

.privacy-section ul {
    margin-left: 30px;
    margin-bottom: 15px;
}

.privacy-section li {
    font-size: 16px;
    color: #ccc;
    margin-bottom: 10px;
    line-height: 1.8;
}

.privacy-contact {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid #444;
}

/* 页脚样式 */
.footer {
    background-color: transparent;
    color: #fff;
    text-align: center;
    padding: 40px 0 20px;
    margin-top: 60px;
}

.footer-divider {
    width: 100%;
    height: 1px;
    background-color: #444;
    margin-bottom: 20px;
}

.footer-text {
    font-size: 14px;
    color: #999;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 15px;
    }

    .logo-text {
        font-size: 16px;
    }

    .nav {
        width: 100%;
        justify-content: center;
    }

    .hero-title {
        font-size: 32px;
    }

    .download-title,
    .contact-title,
    .about-title {
        font-size: 24px;
    }

    .contact-info {
        flex-direction: column;
        gap: 20px;
    }

    .contact-item {
        justify-content: center;
    }

    .privacy-content {
        padding: 20px 15px;
    }

    .privacy-content h1 {
        font-size: 28px;
    }

    .privacy-section h2 {
        font-size: 20px;
    }

    .app-logo,
    .download-icon-box,
    .contact-icon-box,
    .about-icon-box {
        width: 60px;
        height: 60px;
        padding: 12px;
    }
}