:root {
    --primary-color: #3b82f6;
    --bg-color: #ffffff;
    --text-color: #1f2937;
    --sidebar-bg: #f9fafb;
    --border-color: #e5e7eb;
    --code-bg: #f3f4f6;
}

@media (prefers-color-scheme: dark) {
    :root {
        --primary-color: #60a5fa;
        --bg-color: #111827;
        --text-color: #f3f4f6;
        --sidebar-bg: #1f2937;
        --border-color: #374151;
        --code-bg: #1f2937;
    }
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    margin: 0;
    display: flex;
}

#sidebar {
    width: auto;
    min-width: 150px;
    height: 100vh;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    flex-shrink: 0;
    overflow-y: auto;
    padding: 2rem 1.5rem;
    white-space: nowrap;
}

#content {
    flex-grow: 1;
    padding: 3rem 4rem;
    max-width: 900px;
}

h1,
h2,
h3 {
    color: var(--text-color);
    margin-top: 2rem;
}

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

a:hover {
    text-decoration: underline;
}

#sidebar nav>a.nav-link {
    display: block;
    padding: 0.5rem 0;
    color: var(--text-color);
    font-size: 0.95rem;
    text-align: center;
}

.nav-link.active {
    color: var(--primary-color);
    font-weight: 600;
}

code {
    background-color: var(--code-bg);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: monospace;
}

pre {
    background-color: var(--code-bg);
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
}

.tip {
    background-color: rgba(59, 130, 246, 0.1);
    border-left: 4px solid var(--primary-color);
    padding: 1rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
}

.doc-meta {
    margin-top: -0.5rem;
    color: #6b7280;
    font-size: 0.9rem;
}

/* 模型展示卡片样式 */
.model-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.model-item {
    background-color: var(--sidebar-bg);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.model-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-color);
}

.model-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.1rem;
}

.model-tag {
    font-size: 0.75rem;
    background-color: var(--primary-color);
    color: white;
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    text-transform: uppercase;
}

.model-desc {
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--text-color);
    opacity: 0.85;
}

.model-stats {
    display: flex;
    gap: 1rem;
    font-size: 0.8rem;
    color: #6b7280;
    margin-top: auto;
    padding-top: 0.8rem;
    border-top: 1px dashed var(--border-color);
}

.model-stats span {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

/* 模型对比表格 */
.model-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.95rem;
}

.model-table th,
.model-table td {
    padding: 1.2rem;
    border: 1px solid var(--border-color);
    text-align: center;
    vertical-align: middle;
}

.model-table th {
    background-color: var(--sidebar-bg);
    color: var(--text-color);
    font-weight: 600;
    white-space: nowrap;
}

.model-table tr:hover {
    background-color: rgba(59, 130, 246, 0.05);
}

.model-table strong {
    color: var(--primary-color);
}

.header-actions {
    position: absolute;
    top: 1.5rem;
    right: 2.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    z-index: 100;
}

.back-home {
    font-size: 0.85rem;
    color: var(--text-color);
    padding: 0.4rem 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    transition: all 0.2s;
}

.back-home:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.lang-select {
    appearance: none;
    -webkit-appearance: none;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 0.4rem 2rem 0.4rem 1rem;
    font-size: 0.85rem;
    cursor: pointer;
    outline: none;
    color: var(--text-color);
    transition: all 0.2s;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='%2364748b'%3E%3Cpath d='M12 16L6 10H18L12 16Z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.7rem center;
}

.lang-select:hover {
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

@media (max-width: 768px) {
    .header-actions {
        position: static;
        display: flex;
        gap: 0.5rem;
    }

    .back-home {
        font-size: 0.8rem;
        padding: 0.3rem 0.6rem;
    }

    .lang-select {
        border: 1px solid var(--border-color);
        padding: 0.3rem 1.5rem 0.3rem 0.6rem;
        font-size: 0.8rem;
        background-position: right 0.4rem center;
    }
}

.info {
    background-color: rgba(16, 185, 129, 0.1);
    border-left: 4px solid #10b981;
    padding: 1rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
}

#menu-toggle {
    display: none;
}

@media (max-width: 768px) {
    body {
        flex-direction: column;
    }

    /* 移动端顶部状态栏 */
    .mobile-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 0 1rem;
        height: 60px;
        background: var(--bg-color);
        border-bottom: 1px solid var(--border-color);
        position: sticky;
        top: 0;
        z-index: 1000;
    }

    .menu-icon {
        font-size: 1.8rem;
        cursor: pointer;
        padding: 5px;
        color: var(--text-color);
    }

    #sidebar {
        width: 240px;
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        transform: translateX(-100%);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 2000;
        box-shadow: 4px 0 15px rgba(0, 0, 0, 0.1);
        display: block !important;
        /* 强制显示以覆盖可能的 display:none */
    }

    /* 侧边栏开启逻辑 */
    #menu-toggle:checked~#sidebar {
        transform: translateX(0);
    }

    /* 遮罩层逻辑 */
    .content-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.4);
        z-index: 1500;
        backdrop-filter: blur(2px);
    }

    #menu-toggle:checked~.content-overlay {
        display: block;
    }

    #sidebar nav {
        display: flex;
        flex-direction: column;
        padding: 1rem 0;
    }

    #sidebar .nav-link {
        text-align: left !important;
        padding: 1rem 1.5rem;
        border-bottom: 1px solid var(--border-color);
    }

    #sidebar .lang-box,
    #sidebar div[style*="border-top"] {
        display: block;
        padding: 1rem 1.5rem;
    }

    #content {
        margin-left: 0;
        padding: 2rem 1.2rem;
    }
}

@media (min-width: 769px) {

    .mobile-header,
    .content-overlay {
        display: none;
    }
}