:root {
    /* 颜色系统 */
    --primary-color: #007bff;
    --primary-dark: #0056b3;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    /* 文字颜色 */
    --text-color: #333333;
    --text-secondary: #666666;
    --text-light: #999999;
    /* 边框和背景 */
    --border-color: #dee2e6;
    --border-light: #e9ecef;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --shadow-dark: rgba(0, 0, 0, 0.15);
    --background-color: #f8f9fa;
    --card-bg: #ffffff;
    --header-bg: #2c3e50;
    --hero-gradient: linear-gradient(135deg, var(--header-bg) 0%, #3498db 100%);
    /* 错误页面颜色 */
    --error-400-color: #ff6b6b;
    --error-401-color: #ff922b;
    --error-403-color: #f03e3e;
    --error-404-color: #339af0;
    --error-405-color: #51cf66;
    --error-408-color: #ff922b;
    --error-429-color: #cc5de8;
    --error-500-color: #ff6b6b;
    --error-502-color: #ff922b;
    --error-503-color: #51cf66;
    --error-504-color: #339af0;
    /* 间距系统 */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    /* 圆角系统 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    /* 过渡效果 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

* {
    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);
    background: var(--background-color);
    min-height: 100vh;
}


header {
    background: var(--header-bg);
    color: white;
    box-shadow: 0 2px 10px var(--shadow-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: bold;
}

    .logo i {
        color: var(--primary-color);
        font-size: 1.8rem;
    }

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    gap: 8px;
}

    nav a:hover,
    nav a.active {
        background: rgba(255, 255, 255, 0.1);
        color: var(--primary-color);
    }


main {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
}

.page-header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem 0;
}

    .page-header h1 {
        font-size: 2.5rem;
        color: var(--dark-color);
        margin-bottom: 0.5rem;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 15px;
    }

    .page-header .subtitle {
        font-size: 1.2rem;
        color: var(--text-secondary);
    }


.hero {
    background: var(--hero-gradient);
    color: white;
    border-radius: var(--radius-lg);
    padding: 3rem 2rem;
    margin-bottom: 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

    .hero::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: linear-gradient(45deg, rgba(255,255,255,0.1) 25%, transparent 25%, transparent 50%, rgba(255,255,255,0.1) 50%, rgba(255,255,255,0.1) 75%, transparent 75%, transparent);
        background-size: 40px 40px;
        opacity: 0.1;
    }

.hero-content {
    position: relative;
    z-index: 1;
}

    .hero-content h1 {
        font-size: 2.5rem;
        margin-bottom: 1rem;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 15px;
    }

    .hero-content .subtitle {
        font-size: 1.3rem;
        opacity: 0.9;
        margin-bottom: 2rem;
    }


.server-status {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.status-item {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

    .status-item i {
        font-size: 1.2rem;
    }

.status-success {
    color: var(--success-color);
}

.status-warning {
    color: var(--warning-color);
}

.status-disabled {
    color: var(--secondary-color);
}


.content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: 0 5px 15px var(--shadow-color);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    border: 1px solid var(--border-light);
}

    .card:hover {
        transform: translateY(-5px);
        box-shadow: 0 10px 30px var(--shadow-dark);
    }

    .card h2 {
        color: var(--dark-color);
        margin-bottom: 1.5rem;
        padding-bottom: 0.5rem;
        border-bottom: 2px solid var(--border-color);
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 1.5rem;
    }

.feature-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}


.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.feature-item {
    text-align: center;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    background: var(--light-color);
    display: flex;
    flex-direction: column;
    align-items: center;
}

    .feature-item:hover {
        border-color: var(--primary-color);
        transform: translateY(-3px);
        box-shadow: 0 5px 15px var(--shadow-color);
    }

    .feature-item i {
        font-size: 2.5rem;
        margin-bottom: 1rem;
        color: var(--primary-color);
    }

    .feature-item h3 {
        margin-bottom: 0.5rem;
        color: var(--dark-color);
        font-size: 1.1rem;
    }

    .feature-item p {
        color: var(--text-secondary);
        font-size: 0.95rem;
        line-height: 1.5;
        margin-top: 0.5rem;
    }


.feature-detail {
    margin: 1.5rem 0;
}

    .feature-detail h3 {
        color: var(--dark-color);
        margin-bottom: 1rem;
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 1.2rem;
    }

.features-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.feature-row {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: var(--light-color);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-color);
}

    .feature-row i {
        font-size: 1.5rem;
        color: var(--primary-color);
        margin-top: 0.2rem;
    }

    .feature-row h4 {
        color: var(--dark-color);
        margin-bottom: 0.3rem;
        font-size: 1.1rem;
    }

    .feature-row p {
        color: var(--text-secondary);
        font-size: 0.95rem;
    }


.feature-example {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background: var(--light-color);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

    .feature-example h4 {
        color: var(--dark-color);
        margin-bottom: 0.5rem;
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 1.1rem;
    }

    .feature-example pre {
        margin: 1rem 0 0 0;
        padding: 1rem;
        background: var(--dark-color);
        border-radius: var(--radius-md);
        overflow-x: auto;
    }

    .feature-example code {
        color: white;
        font-family: 'Courier New', Courier, monospace;
        font-size: 0.9rem;
        line-height: 1.4;
    }


.feature-config {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background: var(--light-color);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

    .feature-config h4 {
        color: var(--dark-color);
        margin-bottom: 1rem;
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 1.1rem;
    }

.config-modes {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.config-mode {
    padding: 1rem;
    background: white;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.mode-label {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: var(--primary-color);
    color: white;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.config-mode p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-top: 0.5rem;
}


.protocol-support {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.protocol-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.2rem;
    background: var(--light-color);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-color);
}

.protocol-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.protocol-info h3 {
    color: var(--dark-color);
    margin-bottom: 0.3rem;
    font-size: 1.2rem;
}

.protocol-info p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}


.api-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin: 1.5rem 0;
}

.api-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--light-color);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-color);
    transition: transform var(--transition-normal);
}

    .api-item:hover {
        transform: translateX(5px);
    }

.api-method {
    padding: 0.3rem 0.8rem;
    border-radius: var(--radius-sm);
    font-weight: bold;
    font-size: 0.9rem;
    min-width: 60px;
    text-align: center;
    background: var(--primary-color);
    color: white;
}

    .api-method.get {
        background: var(--success-color);
    }

    .api-method.post {
        background: var(--info-color);
    }

    .api-method.put {
        background: var(--warning-color);
        color: var(--dark-color);
    }

    .api-method.delete {
        background: var(--danger-color);
    }

.api-item code {
    font-family: 'Courier New', monospace;
    background: var(--dark-color);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-sm);
    flex: 1;
}

.api-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-left: auto;
}


.test-actions {
    display: flex;
    gap: 1rem;
    margin: 1.5rem 0;
    flex-wrap: wrap;
}

.test-result {
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: var(--radius-md);
    background: var(--light-color);
    border: 1px solid var(--border-color);
    min-height: 60px;
}

    .test-result .loading,
    .test-result .success,
    .test-result .error,
    .test-result .info {
        display: flex;
        align-items: center;
        gap: 1rem;
        padding: 1rem;
    }

        .test-result .loading i {
            animation: spin 1s linear infinite;
        }

    .test-result .success {
        color: var(--success-color);
        background: rgba(40, 167, 69, 0.1);
        border-left: 4px solid var(--success-color);
    }

    .test-result .error {
        color: var(--danger-color);
        background: rgba(220, 53, 69, 0.1);
        border-left: 4px solid var(--danger-color);
    }

    .test-result .info {
        color: var(--info-color);
        background: rgba(23, 162, 184, 0.1);
        border-left: 4px solid var(--info-color);
    }


.btn {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-decoration: none;
}

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

    .btn-primary:hover {
        background: var(--primary-dark);
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(0, 123, 255, 0.3);
    }

.btn-secondary {
    background: var(--secondary-color);
    color: white;
}

    .btn-secondary:hover {
        background: #545b62;
        transform: translateY(-2px);
    }

.btn-warning {
    background: var(--warning-color);
    color: var(--dark-color);
}

    .btn-warning:hover {
        background: #e0a800;
        transform: translateY(-2px);
    }

.btn-danger {
    background: var(--danger-color);
    color: white;
}

    .btn-danger:hover {
        background: #c82333;
        transform: translateY(-2px);
    }

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}


footer {
    background: var(--dark-color);
    color: white;
    margin-top: 3rem;
    padding-top: 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

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

    .footer-section ul li {
        margin-bottom: 0.5rem;
    }

.footer-section a {
    color: #ddd;
    text-decoration: none;
    transition: color var(--transition-normal);
}

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

.copyright {
    text-align: center;
    padding: 1.5rem;
    margin-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #aaa;
    font-size: 0.9rem;
}


.status-success {
    color: #28a745;
}

.status-warning {
    color: #ffc107;
}

.status-disabled {
    color: #6c757d;
}


.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 14px;
    margin-left: 10px;
    font-weight: 500;
}

.status-enabled {
    background-color: rgba(40, 167, 69, 0.1);
    color: #28a745;
    border: 1px solid rgba(40, 167, 69, 0.2);
}

.status-disabled {
    background-color: rgba(108, 117, 125, 0.1);
    color: #6c757d;
    border: 1px solid rgba(108, 117, 125, 0.2);
}

.status-warning-badge {
    background-color: rgba(255, 193, 7, 0.1);
    color: #ffc107;
    border: 1px solid rgba(255, 193, 7, 0.2);
}


.warning-note {
    background-color: #fff3cd;
    border: 1px solid #ffeaa7;
    border-radius: 5px;
    padding: 12px 15px;
    margin: 15px 0;
    font-size: 14px;
    color: #856404;
}

    .warning-note i {
        margin-right: 8px;
    }


.status-test-group {
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid #eaeaea;
}

    .status-test-group h4 {
        margin-bottom: 10px;
        color: #555;
        font-size: 16px;
    }

.status-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-color);
}

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


.features-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1rem;
}

.feature-row {
    display: flex;
    align-items: center;
    padding: 1.2rem 1.5rem;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    background-color: white;
    transition: all 0.3s ease;
    position: relative;
}

    .feature-row:hover {
        border-color: #007bff;
        transform: translateX(5px);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    }

    .feature-row i {
        font-size: 1.8rem;
        margin-right: 1rem;
        min-width: 40px;
        text-align: center;
    }

.feature-content {
    flex: 1;
}

    .feature-content h3 {
        margin: 0 0 0.3rem 0;
        font-size: 1.1rem;
        color: #333;
    }

    .feature-content p {
        margin: 0;
        color: #666;
        font-size: 0.95rem;
    }


.error-back-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    padding: 14px 32px;
    color: white;
    border-radius: 50px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    z-index: 1;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
    min-width: 200px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-decoration: none;
}

    .error-back-btn::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
        z-index: -1;
        opacity: 0;
        transition: opacity 0.3s ease;
    }

    .error-back-btn:hover::before {
        opacity: 1;
    }

    .error-back-btn:hover {
        transform: translateY(-3px);
        box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
    }

    .error-back-btn:active {
        transform: translateY(-1px);
    }


.btn-group {
    display: flex;
    gap: 12px;
    margin-top: 15px;
    flex-wrap: wrap;
}


.server-status {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 15px;
}

.status-item {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.1);
    padding: 8px 16px;
    border-radius: 8px;
    backdrop-filter: blur(10px);
}

    .status-item i {
        margin-right: 8px;
        font-size: 1.2rem;
    }


.protocol-card {
    background: white;
    border-radius: 10px;
    padding: 20px;
    margin: 20px 0;
    border-left: 4px solid #007bff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

    .protocol-card h3 {
        margin-top: 0;
        color: #333;
        display: flex;
        align-items: center;
        gap: 10px;
    }

.protocol-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 15px;
}

.protocol-item {
    padding: 10px;
    background: #f8f9fa;
    border-radius: 6px;
    border-left: 3px solid #007bff;
}

    .protocol-item strong {
        display: block;
        color: #666;
        font-size: 0.9rem;
        margin-bottom: 4px;
    }

    .protocol-item span {
        font-size: 1.1rem;
        font-weight: 500;
        color: #333;
    }


@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }

    50% {
        opacity: 0.7;
    }
}

@media (max-width: 768px) {
    nav {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }

        nav ul {
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.5rem;
        }

    main {
        padding: 0 1rem;
    }

    .hero-content h1 {
        font-size: 1.8rem;
        flex-direction: column;
    }

    .server-status {
        flex-direction: column;
        align-items: center;
    }

    .features-grid,
    .footer-content {
        grid-template-columns: 1fr;
    }

    .card {
        padding: 1.5rem;
    }

    .api-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .test-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .protocol-item {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }

    .feature-row {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }

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


@media (prefers-color-scheme: dark) {
    :root {
        --background-color: #1a1a1a;
        --text-color: #ffffff;
        --text-secondary: #cccccc;
        --text-light: #999999;
        --card-bg: #2d2d2d;
        --border-color: #404040;
        --border-light: #363636;
        --light-color: #363636;
        --dark-color: #121212;
        --header-bg: #1c2833;
        --hero-gradient: linear-gradient(135deg, #1c2833 0%, #2c5282 100%);
        --shadow-color: rgba(0, 0, 0, 0.3);
        --shadow-dark: rgba(0, 0, 0, 0.5);
    }

    .feature-example pre {
        background: #1a1a1a;
        border: 1px solid var(--border-color);
    }

    .feature-example code {
        color: #f8f9fa;
    }

    .api-item code {
        background: #1a1a1a;
    }

    .warning-note {
        background-color: #3d2c00;
        border-color: #5a4400;
        color: #ffd54f;
    }

    .protocol-card,
    .protocol-item {
        background: #2d2d2d;
        color: #ffffff;
    }

        .protocol-item strong {
            color: #cccccc;
        }

        .protocol-item span {
            color: #ffffff;
        }
}


@media print {
    .hero,
    .test-actions,
    nav,
    footer {
        display: none;
    }

    .card {
        box-shadow: none;
        border: 1px solid #ddd;
        page-break-inside: avoid;
    }
}