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

:root {
    /* 主色调 - 渐变色系（更现代、更吸引人） */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --hero-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --card-gradient: linear-gradient(135deg, #ffffff 0%, #f8f9ff 100%);
    
    /* 颜色 */
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-light: #718096;
    --bg-primary: #ffffff;
    --bg-secondary: #f7fafc;
    --bg-card: #ffffff;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* 圆角 */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-primary);
    background: var(--bg-secondary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    width: 100%;
}

/* ==================== 头部导航 ==================== */
.header {
    background: var(--bg-primary);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav {
    display: flex;
    gap: var(--spacing-md);
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
}

.nav-link:hover {
    color: var(--primary-color);
    background: var(--bg-secondary);
}

.nav-link.active {
    color: var(--primary-color);
    background: var(--bg-secondary);
}

/* 私人订制链接特殊动画效果 */
.nav-link-custom {
    position: relative;
    animation: attentionPulse 2s ease-in-out infinite;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.15) 0%, rgba(118, 75, 162, 0.15) 100%);
    border: 2px solid rgba(102, 126, 234, 0.4);
    font-weight: 600;
    color: var(--primary-color) !important;
    padding: var(--spacing-xs) var(--spacing-md) !important;
    transition: all 0.3s ease;
}

.nav-link-custom::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    border-radius: var(--radius-sm);
    background: var(--primary-gradient);
    opacity: 0;
    z-index: -1;
    animation: glowPulse 2s ease-in-out infinite;
}

.nav-link-custom::after {
    content: '✨';
    position: absolute;
    top: -8px;
    right: -8px;
    font-size: 0.7rem;
    animation: sparkle 1.5s ease-in-out infinite;
}

@keyframes attentionPulse {
    0%, 100% {
        transform: scale(1) translateY(0);
        box-shadow: 0 0 0 0 rgba(102, 126, 234, 0.4);
        border-color: rgba(102, 126, 234, 0.4);
    }
    25% {
        transform: scale(1.03) translateY(-2px);
        box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
        border-color: rgba(102, 126, 234, 0.6);
    }
    50% {
        transform: scale(1.06) translateY(-3px);
        box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
        border-color: rgba(102, 126, 234, 0.8);
    }
    75% {
        transform: scale(1.03) translateY(-2px);
        box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
        border-color: rgba(102, 126, 234, 0.6);
    }
}

@keyframes glowPulse {
    0%, 100% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 0.3;
        transform: translate(-50%, -50%) scale(1.1);
    }
}

@keyframes sparkle {
    0%, 100% {
        opacity: 0.5;
        transform: scale(1) rotate(0deg);
    }
    50% {
        opacity: 1;
        transform: scale(1.2) rotate(180deg);
    }
}

/* 当私人订制链接是当前页面时（active状态）也保持动画 */
.nav-link-custom.active {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.2) 0%, rgba(118, 75, 162, 0.2) 100%);
    border-color: rgba(102, 126, 234, 0.5);
}

.nav-link-custom:hover {
    animation: none;
    transform: scale(1.1);
    background: var(--primary-gradient);
    color: white !important;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
    border-color: transparent;
}

.nav-link-custom:hover::before {
    animation: none;
    opacity: 0;
}

.nav-link-custom:hover::after {
    animation: none;
    opacity: 1;
    transform: scale(1.3) rotate(360deg);
}

.nav-link-custom.active:hover {
    background: var(--primary-gradient);
    color: white !important;
}

.admin-link {
    position: relative;
}

.admin-link::after {
    content: '🔒';
    margin-left: 0.25rem;
    font-size: 0.75rem;
}

/* ==================== 英雄区域 ==================== */
.hero {
    background: var(--hero-gradient);
    color: white;
    padding: var(--spacing-xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    background-size: 200% 200%;
    animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    letter-spacing: -0.02em;
    animation: fadeInUp 0.8s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-subtitle {
    font-size: 1.35rem;
    opacity: 0.95;
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.8s ease 0.2s both;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: var(--spacing-xs);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    animation: fadeInUp 0.8s ease 0.4s both;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* ==================== 主内容区域 ==================== */
.main {
    flex: 1;
    padding: var(--spacing-xl) 0;
}

.filters {
    margin-bottom: var(--spacing-lg);
}

.search-input {
    width: 100%;
    max-width: 500px;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    background: var(--bg-primary);
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.15), var(--shadow-md);
    transform: translateY(-2px);
}

/* ==================== VPS卡片网格 ==================== */
.vps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.vps-card {
    background: var(--card-gradient);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.vps-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.vps-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.vps-card:hover::before {
    transform: scaleX(1);
}

.vps-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.vps-name {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.vps-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.vps-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.feature-tag {
    display: inline-block;
    padding: 0.35rem 0.85rem;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    color: var(--primary-color);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    border: 1px solid rgba(102, 126, 234, 0.2);
    transition: all 0.3s ease;
}

.feature-tag:hover {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.2) 0%, rgba(118, 75, 162, 0.2) 100%);
    transform: translateY(-2px);
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.2);
}

.vps-link {
    display: inline-block;
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--primary-gradient);
    color: white;
    text-decoration: none;
    text-align: center;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.vps-link::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.vps-link:hover::before {
    width: 300px;
    height: 300px;
}

.vps-link:hover {
    transform: scale(1.05) translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
}

.vps-link:active {
    transform: scale(0.98);
}

/* ==================== 空状态 ==================== */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl) 0;
    color: var(--text-light);
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

.empty-state h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

/* ==================== 页脚 ==================== */
.footer {
    background: linear-gradient(135deg, #1a202c 0%, #2d3748 100%);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    color: rgba(255, 255, 255, 0.9);
    border-top: 3px solid var(--primary-color);
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-section {
    text-align: left;
}

.footer-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-desc {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-subtitle {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: white;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.95rem;
}

.contact-icon {
    font-size: 1.2rem;
    width: 24px;
    text-align: center;
}

.contact-label {
    color: rgba(255, 255, 255, 0.7);
    min-width: 60px;
}

.contact-value {
    color: white;
    text-decoration: none;
    transition: color 0.3s ease;
    font-weight: 500;
}

.contact-value:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.85rem;
}

.icp-info {
    margin-top: var(--spacing-xs);
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ==================== 管理后台样式 ==================== */
.admin-main {
    flex: 1;
    padding: var(--spacing-xl) 0;
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.admin-header h2 {
    font-size: 2rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 按钮样式 */
.btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

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

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.875rem;
}

/* 表单样式 */
.admin-form-container {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.admin-form h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-primary);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
    background: var(--bg-primary);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.form-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

/* 表格样式 */
.admin-table-container {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    overflow-x: auto;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
}

.admin-table thead {
    background: var(--primary-gradient);
    color: white;
}

.admin-table th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.admin-table tbody tr {
    border-bottom: 1px solid var(--border-color);
    transition: background 0.2s ease;
}

.admin-table tbody tr:hover {
    background: var(--bg-secondary);
}

.admin-table tbody tr:last-child {
    border-bottom: none;
}

.admin-table td {
    padding: var(--spacing-md);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.admin-table td:first-child {
    font-weight: 600;
    color: var(--primary-color);
}

.admin-table .url-cell {
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.admin-table .action-cell {
    display: flex;
    gap: var(--spacing-xs);
}

/* ==================== 登录界面样式 ==================== */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 80px);
    padding: var(--spacing-xl) var(--spacing-md);
    background: var(--bg-secondary);
}

.login-box {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 400px;
    border: 1px solid var(--border-color);
}

.login-box h2 {
    text-align: center;
    margin-bottom: var(--spacing-sm);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-tip {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    font-size: 0.9rem;
}

.login-footer {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.login-hint {
    font-size: 0.85rem;
    color: var(--text-light);
    margin: var(--spacing-xs) 0;
    text-align: center;
}

.login-hint code {
    background: var(--bg-secondary);
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-sm);
    font-family: 'Courier New', monospace;
    color: var(--primary-color);
    font-weight: 600;
}

.login-warning {
    background: #fff3cd;
    border: 2px solid #ffc107;
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    color: #856404;
    font-weight: 600;
    margin: var(--spacing-sm) 0;
}

.btn-block {
    width: 100%;
    margin-top: var(--spacing-md);
}

.error-message {
    background: #fee;
    color: #c33;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-sm);
    font-size: 0.9rem;
    border: 1px solid #fcc;
}

/* ==================== 管理后台增强样式 ==================== */
.admin-subtitle {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-top: var(--spacing-xs);
}

.admin-subtitle a {
    text-decoration: none;
    cursor: pointer;
}

.admin-subtitle a:hover {
    text-decoration: underline;
}

.admin-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* ==================== 操作日志样式 ==================== */
.logs-container {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.logs-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border-color);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.logs-header h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
}

.logs-actions {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.logs-content {
    max-height: 600px;
    overflow-y: auto;
}

.log-item {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    transition: background 0.2s ease;
}

.log-item:hover {
    background: var(--bg-secondary);
}

.log-item:last-child {
    border-bottom: none;
}

.log-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xs);
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.log-action {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.log-action.add {
    background: #d4edda;
    color: #155724;
}

.log-action.edit {
    background: #fff3cd;
    color: #856404;
}

.log-action.delete {
    background: #f8d7da;
    color: #721c24;
}

.log-time {
    color: var(--text-light);
    font-size: 0.85rem;
}

.log-details {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: var(--spacing-xs);
    line-height: 1.6;
}

.log-details strong {
    color: var(--text-primary);
}

/* ==================== 弹窗样式 ==================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    padding: var(--spacing-md);
    backdrop-filter: blur(4px);
}

.modal-box {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid var(--border-color);
}

.modal-box h3 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

/* ==================== 关于页面样式 ==================== */
.about-main {
    flex: 1;
    padding: var(--spacing-xl) 0;
    background: var(--bg-secondary);
}

.about-section {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.about-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--border-color);
}

.about-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-text {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    text-align: justify;
}

.section-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    text-align: center;
}

.section-intro {
    font-size: 1rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.rules-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    max-width: 900px;
    margin: 0 auto;
}

.rule-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-color);
    transition: all 0.3s ease;
}

.rule-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.rule-icon {
    font-size: 2rem;
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.rule-content {
    flex: 1;
}

.rule-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.rule-text {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.rule-list {
    margin-left: var(--spacing-md);
    margin-top: var(--spacing-sm);
    color: var(--text-secondary);
    line-height: 1.8;
}

.rule-list li {
    margin-bottom: var(--spacing-xs);
}

.contact-section {
    text-align: center;
}

.contact-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.contact-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all 0.3s ease;
    border: 2px solid var(--border-color);
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.contact-card-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.contact-card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.contact-card-value {
    font-size: 1rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.contact-card-value:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

.thank-you {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 2px solid var(--border-color);
}

.thank-you-text {
    font-size: 1.2rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ==================== 私人订制页面样式 ==================== */
.custom-main {
    flex: 1;
    padding: var(--spacing-xl) 0;
    background: var(--bg-secondary);
}

.custom-hero {
    background: var(--hero-gradient);
    color: white;
    padding: var(--spacing-xl) 0;
    text-align: center;
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.custom-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

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

.custom-hero-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.custom-hero-subtitle {
    font-size: 1.35rem;
    opacity: 0.95;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.custom-section {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.service-intro {
    margin-bottom: var(--spacing-xl);
}

.intro-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: left;
}

.intro-text {
    font-size: 1.05rem;
    line-height: 1.9;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    text-align: justify;
}

.intro-text strong {
    color: var(--text-primary);
    font-weight: 600;
}

.service-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

@media (max-width: 1024px) {
    .service-features {
        grid-template-columns: repeat(2, 1fr);
    }
}

.feature-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid var(--border-color);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.feature-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.feature-desc {
    color: var(--text-secondary);
    line-height: 1.6;
}

.process-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.process-step {
    flex: 1;
    min-width: 200px;
    max-width: 250px;
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.process-step:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.step-number {
    width: 50px;
    height: 50px;
    background: var(--primary-gradient);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto var(--spacing-sm);
    box-shadow: var(--shadow-md);
}

.step-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.step-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.process-arrow {
    font-size: 2rem;
    color: var(--primary-color);
    font-weight: 700;
}

.payment-section {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
    border: 2px solid var(--primary-color);
}

.payment-container {
    max-width: 600px;
    margin: var(--spacing-xl) auto;
}

.payment-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--border-color);
    margin-bottom: var(--spacing-lg);
    transition: box-shadow 0.3s ease, border-color 0.3s ease;
}

.payment-card:hover {
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.payment-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--border-color);
}

.payment-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.payment-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.stripe-button-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 50px;
    margin: var(--spacing-lg) 0;
}

.payment-alternative {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
}

.alternative-text {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.payment-link {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--primary-gradient);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: var(--shadow-md);
}

.payment-link:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.payment-note {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.note-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.note-icon {
    font-size: 1.2rem;
}

.faq-list {
    max-width: 800px;
    margin: var(--spacing-lg) auto 0;
}

.faq-item {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    border-left: 4px solid var(--primary-color);
    transition: all 0.3s ease;
}

.faq-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.faq-question {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.faq-answer {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-stats {
        gap: var(--spacing-md);
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .vps-grid {
        grid-template-columns: 1fr;
    }
    
    .admin-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .admin-table {
        font-size: 0.8rem;
    }
    
    .admin-table th,
    .admin-table td {
        padding: var(--spacing-sm);
    }
    
    .action-cell {
        flex-direction: column;
    }
    
    .login-box {
        padding: var(--spacing-lg);
    }
    
    .admin-actions {
        width: 100%;
    }
    
    .admin-actions .btn {
        flex: 1;
    }
    
    .logs-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .logs-actions {
        width: 100%;
    }
    
    .logs-actions .btn {
        flex: 1;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .footer-section {
        text-align: center;
    }
    
    .about-title {
        font-size: 2rem;
    }
    
    .about-text {
        font-size: 1rem;
        text-align: left;
    }
    
    .rule-item {
        flex-direction: column;
        text-align: center;
    }
    
    .rule-icon {
        margin: 0 auto;
    }
    
    .contact-cards {
        grid-template-columns: 1fr;
    }
    
    .custom-hero-title {
        font-size: 2rem;
    }
    
    .custom-hero-subtitle {
        font-size: 1.1rem;
    }
    
    .service-features {
        grid-template-columns: 1fr;
    }
    
    .intro-text {
        font-size: 1rem;
        text-align: left;
    }
    
    .process-steps {
        flex-direction: column;
    }
    
    .process-arrow {
        transform: rotate(90deg);
    }
    
    .process-step {
        max-width: 100%;
    }
    
    .payment-note {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .header-content {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .nav {
        width: 100%;
        justify-content: center;
    }
}