:root {
    --primary-color: #007AFF;
    --background-color: #F5F5F7;
    --card-background: #FFFFFF;
    --text-color: #1D1D1F;
    --sidebar-width: 250px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    display: flex;
    background-color: var(--background-color);
    color: var(--text-color);
}

/* 侧边栏样式 */
.sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    position: fixed;
    background-color: var(--card-background);
    padding: 2rem;
    box-shadow: 2px 0 10px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.logo h1 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: var(--primary-color);
}

.nav-links {
    list-style: none;
}

.nav-links li {
    margin: 1rem 0;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-size: 1rem;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 1rem;
    border-radius: 6px;
}

.nav-icon {
    width: 1.25rem;
    height: 1.25rem;
    stroke: currentColor;
    transition: stroke 0.3s;
}

.nav-links a:hover {
    color: var(--primary-color);
    background-color: rgba(0, 0, 0, 0.05);
}

.contact-section {
    margin-top: auto;
    padding-top: 2rem;
    text-align: center;
}

.qrcode {
    width: 150px;
    height: 150px;
    margin: 0 auto 1rem;
}

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

.contact-text {
    color: var(--text-color);
    font-size: 0.9rem;
    opacity: 0.8;
}

/* 内容区样式 */
.content {
    margin-left: var(--sidebar-width);
    padding: 2rem;
    width: calc(100% - var(--sidebar-width));
}

.doc-section {
    margin-bottom: 2rem;
}

.doc-card {
    background-color: var(--card-background);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.copy-btn {
    margin-top: 1rem;
    padding: 0.5rem 1rem;
    background-color: #000000;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: opacity 0.3s;
}

.copy-btn:hover {
    opacity: 0.9;
}

/* 在doc-card相关样式中添加 */
.doc-card h2 {
    margin-bottom: 16px;
}

/* Logo样式 */
.logo {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 2rem;
}

.logo-img {
    width: 165px;
    height: auto;
    object-fit: contain;
    border-radius: 6px;
}

/* 移动端适配样式 */
@media screen and (max-width: 768px) {
    body {
        flex-direction: column;
    }

    /* 侧边栏样式调整 */
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        padding: 1rem;
    }

    .nav-links {
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .nav-links li {
        margin: 0;
        flex: 1 1 calc(50% - 0.5rem); /* 每行显示两个导航项 */
    }

    .nav-links a {
        padding: 0.75rem;
        justify-content: center;
    }

    /* Logo样式调整 */
    .logo {
        justify-content: center;
        margin-bottom: 1rem;
    }

    /* 联系方式区域调整 */
    .contact-section {
        padding-top: 1rem;
    }

    .qrcode {
        width: 120px;
        height: 120px;
    }

    /* 内容区样式调整 */
    .content {
        margin-left: 0;
        width: 100%;
        padding: 1rem;
    }

    .doc-card {
        padding: 1rem;
    }

    /* 文字大小调整 */
    .doc-content {
        font-size: 0.9rem;
    }

    .doc-card h2 {
        font-size: 1.25rem;
    }

    /* 移动端Logo适配 */
    .logo-img {
        width: 140px;
    }
}

/* 超小屏幕适配 */
@media screen and (max-width: 480px) {
    .nav-links li {
        flex: 1 1 100%; /* 每行显示一个导航项 */
    }

    .nav-links a {
        padding: 0.5rem;
    }
}