* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
}

body {
    background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
    padding: 20px;
}

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

header {
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    border-bottom: 1px solid #eaeaea;
    margin-bottom: 30px;
}

.logo {
    font-size: 28px;
    font-weight: 700;
    color: #1e50a2;
}

.logo i {
    color: #ff6a00;
    margin-right: 10px;
}

.back-link {
    display: inline-flex;
    align-items: center;
    color: #1e50a2;
    text-decoration: none;
    font-size: 16px;
    transition: color 0.3s;
}

.back-link:hover {
    color: #ff6a00;
}

.back-link i {
    margin-right: 5px;
    font-size: 14px;
}

.search-box {
    background: white;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 150, 0.1);
    padding: 20px;
    margin: 0 auto 30px;
    max-width: 800px;
}

.search-form {
    display: flex;
}

.search-input {
    flex: 1;
    padding: 14px 18px;
    font-size: 16px;
    border: 2px solid #1e50a2;
    border-radius: 8px 0 0 8px;
    outline: none;
    transition: border-color 0.3s;
}

.search-input:focus {
    border-color: #ff6a00;
    box-shadow: 0 0 0 3px rgba(30, 80, 162, 0.2);
}

.search-button {
    background: linear-gradient(135deg, #1e50a2 0%, #2a6fd0 100%);
    color: white;
    border: none;
    padding: 0 25px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 0 8px 8px 0;
    cursor: pointer;
    transition: all 0.3s;
}

.search-button:hover {
    background: linear-gradient(135deg, #2a6fd0 0%, #3a8cff 100%);
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 30px 0 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid #1e50a2;
}

.results-title {
    font-size: 24px;
    color: #1e50a2;
}

.results-container {
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    margin-bottom: 40px;
}

.result-section {
    padding: 25px;
    border-bottom: 1px solid #eee;
}

.result-section:last-child {
    border-bottom: none;
}

.section-title {
    font-size: 18px;
    color: #1e50a2;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
}

.section-title i {
    margin-right: 10px;
    width: 24px;
    text-align: center;
}

.info-grid {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 15px;
}

.info-label {
    color: #666;
    font-weight: 500;
}

.info-value {
    font-weight: 500;
}

.server-info {
    background: #f9fbfd;
    border: 1px solid #eaeaea;
    border-radius: 8px;
    padding: 15px;
    margin: 15px 0;
}

.server-name {
    font-weight: 600;
    color: #1e50a2;
}

.dns-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 15px;
}

.dns-server {
    background: #f9fbfd;
    border: 1px solid #eaeaea;
    border-radius: 8px;
    padding: 15px;
}

.dns-name {
    font-weight: 600;
    margin-bottom: 5px;
}

.dns-ip {
    color: #666;
    font-size: 14px;
}

.raw-data {
    background: #2c3e50;
    color: #ecf0f1;
    border-radius: 8px;
    padding: 20px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.5;
    overflow-x: auto;
    white-space: pre-wrap;
    max-height: 300px;
    overflow-y: hidden;
    transition: max-height 0.3s ease;
}

.raw-data.expanded {
    max-height: none;
}

.raw-data-controls {
    text-align: center;
    margin-top: 15px;
}

.toggle-button {
    background: #1e50a2;
    color: white;
    border: none;
    padding: 8px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: background 0.3s;
}

.toggle-button:hover {
    background: #2a6fd0;
}

footer {
            text-align: center;
            padding: 30px 0 20px;
            color: #666;
            border-top: 1px solid #eaeaea;
            margin-top: 30px;
            width: 100%;
        }
        
        .footer-links {
            margin-bottom: 15px;
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 15px;
        }
        
        .footer-link {
            display: inline-block;
            color: #1e50a2;
            text-decoration: none;
            font-size: clamp(12px, 2.5vw, 14px);
        }
        
        .footer-link:hover {
            color: #ff6a00;
        }
        
        .footer-info {
            margin-top: 15px;
        }
        
        .footer-info p {
            margin-bottom: 10px;
        }

.disclaimer {
    background: #fff8e6;
    border-left: 4px solid #ffc107;
    padding: 15px;
    border-radius: 0 8px 8px 0;
    margin: 20px 0;
    font-size: 14px;
}

.info-value .not-found {
    color: #e74c3c;
    font-style: italic;
}

.privacy-notice {
    background: #e8f4ff;
    border-left: 4px solid #1e50a2;
    padding: 12px 15px;
    border-radius: 0 8px 8px 0;
    margin: 10px 0;
    font-size: 14px;
}

.privacy-icon {
    color: #1e50a2;
    margin-right: 8px;
}

.registrar-contact {
    display: flex;
    align-items: center;
    margin-top: 5px;
    flex-wrap: wrap;
}

.registrar-contact a {
    color: #1e50a2;
    text-decoration: none;
    margin-right: 15px;
    display: flex;
    align-items: center;
    margin-bottom: 5px;
    transition: color 0.3s;
}

.registrar-contact a:hover {
    text-decoration: underline;
    color: #ff6a00;
}

.registrar-contact i {
    margin-right: 5px;
    font-size: 14px;
}

.domain-info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    background: #f0f7ff;
    padding: 12px 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
}

.domain-info {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
}

.query-time {
    background: #e1edff;
    padding: 5px 12px;
    border-radius: 16px;
    font-weight: 500;
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.query-time i {
    margin-right: 6px;
    color: #1e50a2;
    font-size: 14px;
}

.contact-notice {
    color: #666;
    font-style: italic;
    font-size: 14px;
}

.status-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.status-item {
    display: flex;
    align-items: center;
    gap: 5px;
}

.status-help {
    color: #1e50a2;
    cursor: help;
}

.email-link {
    color: #1e50a2;
    text-decoration: none;
    word-break: break-all;
    transition: color 0.3s;
}

.email-link:hover {
    text-decoration: underline;
    color: #ff6a00;
}

/* 导航栏样式 */
.main-nav {
    display: flex;
    justify-content: center;
    margin: 20px 0 30px;
    gap: 20px;
    flex-wrap: wrap;
}

.nav-link {
    text-decoration: none;
    color: #1e50a2;
    font-weight: 500;
    padding: 8px 15px;
    border-radius: 6px;
    transition: all 0.3s;
    display: flex;
    align-items: center;
}

.nav-link i {
    margin-right: 8px;
    width: 16px;
    text-align: center;
}

.nav-link:hover {
    background: #e8f4ff;
    color: #ff6a00;
}

.conversion-info {
    background: #f0f7ff;
    padding: 12px;
    border-radius: 8px;
    margin: 10px 0;
    font-size: 14px;
    border-left: 3px solid #1e50a2;
}

.conversion-info ul {
    margin: 10px 0 10px 20px;
}

.conversion-info li {
    margin-bottom: 5px;
}

/* 新增样式：原始数据提示 */
.raw-data-hint {
    font-size: 50%;
    color: #aaa;
    vertical-align: middle;
    margin-left: 4px;
    display: inline-block;
    line-height: 1.4;
}

/* DNS服务器优化样式 */
.dns-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 12px;
}

.dns-server {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 70px;
}

.dns-name {
    font-size: 15px;
}

/* 缓存提示样式 */
.cache-indicator {
    display: inline-flex;
    align-items: center;
    background: #e1edff;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    color: #1e50a2;
    margin-left: 10px;
}

.cache-indicator i {
    margin-right: 4px;
    font-size: 11px;
}

.refresh-button {
    display: inline-flex;
    align-items: center;
    background: #4caf50;
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    margin-left: 10px;
    text-decoration: none;
    transition: background 0.3s;
}

.refresh-button:hover {
    background: #43a047;
}

.refresh-button i {
    margin-right: 4px;
    font-size: 11px;
}

/* 分隔线样式 */
.separator {
    margin: 0 10px;
    color: #ccc;
}

/* 无障碍功能：隐藏元素但对屏幕阅读器可见 */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* 移动端优化 */
@media (max-width: 768px) {
    .search-form {
        flex-direction: column;
    }
    
    .search-input {
        border-radius: 8px;
        margin-bottom: 15px;
    }
    
    .search-button {
        border-radius: 8px;
        padding: 14px;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .results-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .registrar-contact {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }
    
    .registrar-contact a {
        margin-right: 0;
    }
    
    .main-nav {
        gap: 10px;
    }
    
    .nav-link {
        padding: 6px 12px;
        font-size: 14px;
    }
    
    .domain-info-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .domain-info {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }
    
    .separator {
        display: none;
    }
    
    .query-time {
        align-self: flex-start;
        margin-top: 10px;
        flex-wrap: wrap;
        gap: 5px;
    }
    
    .cache-indicator, .refresh-button {
        margin-left: 0;
        margin-top: 5px;
    }
    
    /* 确保移动端显示实际查询信息 */
    .domain-info div {
        display: block !important;
    }
    
    .logo {
        font-size: 24px;
    }
}

/* 加载动画 */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    display: none;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #1e50a2;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 通知样式 */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 10px 20px;
    border-radius: 4px;
    color: white;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.notification-success {
    background: #4caf50;
}

.notification-error {
    background: #f44336;
}

/* 减少动画，为偏好减少动画的用户提供支持 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .spinner {
        animation: none;
        border: 4px solid #f3f3f3;
        border-top: 4px solid #1e50a2;
    }
    
    .raw-data {
        transition: none;
    }
}