/* ==================== 全局样式 ==================== */

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

:root {
    /* 紫色系配色方案 */
    --color-primary: #8b5cf6;
    --color-primary-light: #a78bfa;
    --color-primary-dark: #7c3aed;
    --color-secondary: #ec4899;
    --color-accent: #f59e0b;
    
    /* 中性色 */
    --color-dark: #1e293b;
    --color-gray-900: #1f2937;
    --color-gray-800: #374151;
    --color-gray-700: #4b5563;
    --color-gray-600: #6b7280;
    --color-gray-500: #9ca3af;
    --color-gray-400: #d1d5db;
    --color-gray-300: #e5e7eb;
    --color-gray-200: #f3f4f6;
    --color-gray-100: #f9fafb;
    --color-white: #ffffff;
    
    /* 状态色 */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;
    
    /* 间距 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* 字体 */
    --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    
    /* 过渡 */
    --transition: all 0.3s ease;
    
    /* 圆角 */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--color-gray-100);
    color: var(--color-gray-900);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ==================== 导航栏 ==================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-gray-200);
    transition: var(--transition);
}

.navbar.backend-nav {
    background: var(--color-white);
    border-bottom: 1px solid var(--color-gray-200);
}

.navbar.backend-nav .brand-text {
    color: var(--color-gray-900);
}

.navbar.backend-nav .nav-link {
    color: var(--color-gray-600);
}

.navbar.backend-nav .nav-link:hover {
    color: var(--color-primary);
    background: var(--color-gray-100);
}

.navbar.backend-nav .nav-link.active {
    color: var(--color-primary);
    background: rgba(139, 92, 246, 0.1);
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    cursor: pointer;
}

.brand-icon {
    font-size: 1.75rem;
}

.brand-text {
    color: var(--color-gray-900);
    letter-spacing: -0.02em;
}

.logo-img {
    height: 40px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
}

.nav-link {
    padding: 0.5rem 1rem;
    color: var(--color-gray-600);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--color-gray-900);
    background: var(--color-gray-100);
}

.nav-link.active {
    color: var(--color-primary);
    background: rgba(139, 92, 246, 0.1);
}

.nav-actions {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.nav-link-btn {
    padding: 0.5rem 1.25rem;
    background: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

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

.nav-cta {
    padding: 0.5rem 1.5rem;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.nav-cta:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

/* 后台导航栏 */
.navbar.backend-nav {
    background: var(--color-white);
    border-bottom: 1px solid var(--color-gray-200);
}

.navbar.backend-nav .brand-text {
    color: var(--color-gray-900);
}

.navbar.backend-nav .nav-link {
    color: var(--color-gray-600);
}

.navbar.backend-nav .nav-link:hover {
    color: var(--color-primary);
    background: var(--color-gray-100);
}

.navbar.backend-nav .nav-link.active {
    color: var(--color-primary);
    background: rgba(139, 92, 246, 0.1);
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-home-btn {
    padding: 0.5rem 1rem;
    background: var(--color-gray-100);
    color: var(--color-gray-700);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
}

.nav-home-btn:hover {
    background: var(--color-gray-200);
}

.user-balance {
    color: var(--color-gray-700);
    font-size: 0.875rem;
    font-weight: 500;
}

.user-avatar-wrapper {
    position: relative;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    cursor: pointer;
    transition: var(--transition);
}

.user-avatar:hover {
    transform: scale(1.05);
    box-shadow: 0 2px 8px rgba(139, 92, 246, 0.3);
}

.user-menu-dropdown {
    position: absolute;
    top: 50px;
    right: 0;
    width: 220px;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 1001;
}

.user-info {
    padding: 1rem;
    border-bottom: 1px solid var(--color-gray-200);
}

.user-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: 0.25rem;
}

.user-email {
    font-size: 0.75rem;
    color: var(--color-gray-500);
}

.menu-divider {
    height: 1px;
    background: var(--color-gray-200);
    margin: 0.5rem 0;
}

.menu-item {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--color-gray-700);
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--transition);
}

.menu-item:hover {
    background: var(--color-gray-100);
    color: var(--color-primary);
}

.menu-item.logout {
    color: var(--color-error);
}

.menu-item.logout:hover {
    background: rgba(239, 68, 68, 0.1);
}

.nav-logout {
    padding: 0.5rem 1.25rem;
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
}

.nav-logout:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* ==================== 页面切换 ==================== */

.page {
    display: none;
    padding-top: 70px;
}

.page.active {
    display: block;
}

.hidden {
    display: none !important;
}

/* ==================== 使用统计 ==================== */

.usage-stats-section {
    margin-top: 2rem;
}

.usage-stats-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1.5rem;
}

.usage-stat-item {
    background: var(--color-white);
    padding: 1.5rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    text-align: center;
    transition: var(--transition);
}

.usage-stat-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.usage-stat-item .usage-label {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin-bottom: 0.5rem;
}

.usage-stat-item .usage-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-gray-900);
}

/* ==================== Hero Section ==================== */

.hero-section {
    min-height: calc(100vh - 70px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    background: linear-gradient(135deg, var(--color-gray-100) 0%, var(--color-white) 100%);
}

.hero-content {
    text-align: center;
    max-width: 900px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
    color: var(--color-gray-900);
}

.title-line {
    display: block;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-gray-600);
    margin-bottom: 3rem;
    font-weight: 400;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 4rem;
}

.hero-btn {
    padding: 0.875rem 2rem;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.hero-btn.primary {
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
}

.hero-btn.primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.3);
}

.hero-btn.secondary {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

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

.hero-stats {
    display: flex;
    gap: 4rem;
    justify-content: center;
}

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

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

/* ==================== Section通用样式 ==================== */

.section-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

.bg-light {
    background: var(--color-gray-100);
}

.section-header {
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
    color: var(--color-gray-900);
}

.section-subtitle {
    font-size: 1rem;
    color: var(--color-gray-600);
}

/* ==================== 核心服务 ==================== */

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.service-card {
    background: var(--color-white);
    padding: 2rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.service-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--color-gray-900);
}

.service-card p {
    color: var(--color-gray-600);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.service-features {
    list-style: none;
    margin-bottom: 1.5rem;
}

.service-features li {
    padding: 0.5rem 0;
    font-size: 0.875rem;
    color: var(--color-gray-600);
    position: relative;
    padding-left: 1.5rem;
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: 600;
}

.service-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

/* ==================== 为什么选择我们 ==================== */

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.advantage-item {
    text-align: center;
    padding: 2rem;
    background: var(--color-white);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-gray-200);
    transition: var(--transition);
}

.advantage-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.advantage-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.advantage-item h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--color-gray-900);
}

.advantage-item p {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin-bottom: 1rem;
}

.advantage-details {
    list-style: none;
    text-align: left;
}

.advantage-details li {
    padding: 0.25rem 0;
    font-size: 0.8rem;
    color: var(--color-gray-500);
    position: relative;
    padding-left: 1rem;
}

.advantage-details li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-primary);
}

/* ==================== 快速开始 ==================== */

.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

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

.step-number {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-white);
    font-size: 2rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.step-item h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--color-gray-900);
}

.step-item p {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin-bottom: 1rem;
}

.step-details {
    list-style: none;
    text-align: left;
}

.step-details li {
    padding: 0.25rem 0;
    font-size: 0.8rem;
    color: var(--color-gray-500);
    position: relative;
    padding-left: 1rem;
}

.step-details li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-primary);
}

/* ==================== 合作伙伴 ==================== */

.partners-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1.5rem;
}

.partner-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.partner-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.partner-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-gray-700);
    margin-bottom: 0.5rem;
}

.partner-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 0.75rem;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}
}

.partner-name {
    font-size: 0.75rem;
    color: var(--color-gray-500);
}

/* ==================== 客户案例 ==================== */

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.case-card {
    background: var(--color-white);
    padding: 2rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

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

.case-industry {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: rgba(139, 92, 246, 0.1);
    color: var(--color-primary);
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
}

.case-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--color-gray-900);
}

.case-desc {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.case-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.case-stat {
    text-align: center;
    padding: 1rem;
    background: var(--color-gray-50);
    border-radius: var(--radius-sm);
}

.case-stat .stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    display: block;
}

.case-stat .stat-label {
    font-size: 0.75rem;
    color: var(--color-gray-500);
}

/* ==================== 新闻动态 ==================== */

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.news-card {
    background: var(--color-white);
    padding: 2rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

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

.news-date {
    font-size: 0.75rem;
    color: var(--color-gray-500);
    margin-bottom: 0.75rem;
}

.news-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--color-gray-900);
}

.news-desc {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.news-link {
    color: var(--color-primary);
    font-size: 0.875rem;
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.news-link:hover {
    color: var(--color-primary-dark);
}

/* ==================== 常见问题 ==================== */

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--color-white);
    padding: 1.5rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--color-primary);
}

.faq-question,
.faq-answer {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.faq-question {
    margin-bottom: 1rem;
}

.faq-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.faq-answer .faq-icon {
    background: var(--color-gray-300);
    color: var(--color-gray-700);
}

.faq-question span:last-child {
    font-weight: 600;
    color: var(--color-gray-900);
}

.faq-answer span:last-child {
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* ==================== 联系我们 ==================== */

.contact-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.contact-item {
    text-align: center;
    padding: 2rem;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.contact-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.contact-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-item h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-gray-900);
}

.contact-item p {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin-bottom: 0.25rem;
}

.contact-time {
    font-size: 0.75rem;
    color: var(--color-gray-500);
}

/* ==================== AIDC页面 ==================== */

.aidc-overview {
    margin-bottom: 3rem;
}

.aidc-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.aidc-stat-card {
    background: var(--color-white);
    padding: 2rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    text-align: center;
    transition: var(--transition);
}

.aidc-stat-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.aidc-stat-card .stat-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.aidc-stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.aidc-stat-card .stat-label {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

/* 核心能力横向排版 */
.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1.5rem;
}, 1fr);
    gap: 1.5rem;
}

.capability-card {
    background: var(--color-white);
    padding: 1.5rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

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

.capability-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.capability-card h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-gray-900);
}

.capability-card p {
    font-size: 0.8rem;
    color: var(--color-gray-600);
    margin-bottom: 1rem;
}

.capability-details {
    list-style: none;
}

.capability-details li {
    padding: 0.25rem 0;
    font-size: 0.75rem;
    color: var(--color-gray-500);
}

.datacenter-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.datacenter-card {
    background: var(--color-white);
    padding: 2rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

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

.datacenter-region {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.datacenter-name {
    font-size: 0.875rem;
    color: var(--color-gray-900);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.datacenter-location {
    font-size: 0.8rem;
    color: var(--color-gray-500);
    margin-bottom: 1rem;
}

.datacenter-services {
    list-style: none;
    margin-bottom: 1.5rem;
}

.datacenter-services li {
    padding: 0.25rem 0;
    font-size: 0.8rem;
    color: var(--color-gray-600);
}

.datacenter-specs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--color-gray-50);
    border-radius: var(--radius-sm);
}

.spec-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.spec-label {
    font-size: 0.75rem;
    color: var(--color-gray-500);
}

.spec-value {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-gray-900);
}

.datacenter-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--color-gray-600);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-gray-400);
}

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

/* 技术优势 */
.tech-advantages-section,
.security-section,
.service-guarantee-section {
    margin-top: 3rem;
}

.subsection-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--color-gray-900);
}

.tech-advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.tech-advantage-item {
    background: var(--color-white);
    padding: 1.5rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.tech-advantage-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.tech-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.tech-advantage-item h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-gray-900);
}

.tech-advantage-item p {
    font-size: 0.8rem;
    color: var(--color-gray-600);
    margin-bottom: 1rem;
}

.tech-details {
    list-style: none;
}

.tech-details li {
    padding: 0.25rem 0;
    font-size: 0.75rem;
    color: var(--color-gray-500);
}

/* 安全认证 */
.certifications-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.certification-item {
    text-align: center;
    padding: 2rem;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.certification-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.cert-badge {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
}

.certification-item p {
    font-size: 0.8rem;
    color: var(--color-gray-600);
}

/* 服务保障 */
.guarantee-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.guarantee-card {
    background: var(--color-white);
    padding: 2rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

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

.guarantee-card .guarantee-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.guarantee-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-gray-900);
}

.guarantee-card p {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin-bottom: 1rem;
}

.guarantee-details {
    list-style: none;
}

.guarantee-details li {
    padding: 0.25rem 0;
    font-size: 0.875rem;
    color: var(--color-gray-600);
    position: relative;
    padding-left: 1.25rem;
}

.guarantee-details li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: 600;
}

.guarantee-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.guarantee-item {
    text-align: center;
    padding: 2rem;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.guarantee-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.guarantee-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.guarantee-item h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-gray-900);
}

.guarantee-item p {
    font-size: 0.8rem;
    color: var(--color-gray-600);
}

/* ==================== 智算中心页面 ==================== */

.compute-services {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.compute-card {
    background: var(--color-white);
    padding: 2rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

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

.compute-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.compute-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--color-gray-900);
}

.compute-desc {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.compute-features {
    list-style: none;
    margin-bottom: 1.5rem;
}

.compute-features li {
    padding: 0.5rem 0;
    font-size: 0.875rem;
    color: var(--color-gray-600);
    position: relative;
    padding-left: 1.5rem;
}

.compute-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: 600;
}

.compute-price {
    margin-bottom: 1.5rem;
}

.price-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-primary);
}

.price-unit {
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

.compute-btn {
    width: 100%;
    padding: 0.75rem;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.compute-btn:hover {
    background: var(--color-primary-dark);
}

/* GPU规格对比 */
.gpu-specs-section,
.use-cases-section,
.performance-section,
.success-cases-section {
    margin-top: 3rem;
}

/* 使用场景 */
.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.use-case-item {
    background: var(--color-white);
    padding: 2rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.use-case-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.use-case-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.use-case-item h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--color-gray-900);
}

.use-case-item p {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.use-case-details {
    list-style: none;
    margin-bottom: 1.5rem;
}

.use-case-details li {
    padding: 0.25rem 0;
    font-size: 0.8rem;
    color: var(--color-gray-500);
}

.use-case-performance {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--color-gray-50);
    border-radius: var(--radius-sm);
}

.perf-label {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

.perf-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
}

/* 性能测试 */
.performance-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.performance-card {
    background: var(--color-white);
    padding: 2rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
}

.performance-card h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--color-gray-900);
}

.perf-chart {
    margin-bottom: 1rem;
}

.perf-bar {
    height: 40px;
    background: var(--color-gray-100);
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
    position: relative;
    overflow: hidden;
}

.perf-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: var(--color-primary);
    border-radius: var(--radius-sm);
    transition: width 0.5s ease;
}

.perf-text {
    position: absolute;
    top: 50%;
    left: 1rem;
    transform: translateY(-50%);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-700);
    z-index: 1;
}

.perf-note {
    font-size: 0.75rem;
    color: var(--color-gray-500);
}

/* 成功案例 */
.success-cases-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.success-case-card {
    background: var(--color-white);
    padding: 2rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.success-case-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.case-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.case-industry-tag {
    padding: 0.25rem 0.75rem;
    background: rgba(139, 92, 246, 0.1);
    color: var(--color-primary);
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
}

.case-company {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

.success-case-card h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--color-gray-900);
}

.success-case-card p {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.case-metrics {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.metric {
    text-align: center;
    padding: 1rem;
    background: var(--color-gray-50);
    border-radius: var(--radius-sm);
}

.metric-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    display: block;
    margin-bottom: 0.25rem;
}

.metric-label {
    font-size: 0.75rem;
    color: var(--color-gray-500);
}

/* ==================== 模型市场页面 ==================== */

.models-categories {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.category-btn {
    padding: 0.5rem 1.25rem;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-700);
    cursor: pointer;
    transition: var(--transition);
}

.category-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

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

.models-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.model-card {
    position: relative;
    background: var(--color-white);
    padding: 2rem;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

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

.model-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.25rem 0.75rem;
    background: var(--color-error);
    color: var(--color-white);
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
}

.model-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.model-name {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-gray-900);
}

.model-desc {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.model-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--color-gray-200);
}

.model-type {
    padding: 0.25rem 0.75rem;
    background: rgba(139, 92, 246, 0.1);
    color: var(--color-primary);
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
}

.model-downloads {
    font-size: 0.75rem;
    color: var(--color-gray-500);
}

.model-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.feature-tag {
    padding: 0.25rem 0.5rem;
    background: var(--color-gray-100);
    color: var(--color-gray-600);
    font-size: 0.7rem;
    border-radius: var(--radius-sm);
}

.model-specs {
    margin-bottom: 1rem;
    padding: 1rem;
    background: var(--color-gray-50);
    border-radius: var(--radius-sm);
}

.spec-row {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--color-gray-200);
}

.spec-row:last-child {
    border-bottom: none;
}

.spec-name {
    font-size: 0.8rem;
    color: var(--color-gray-500);
}

.spec-value {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-gray-900);
}

.model-pricing {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.pricing-label {
    font-size: 0.8rem;
    color: var(--color-gray-500);
}

.pricing-value {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-primary);
}

.model-btn {
    width: 100%;
    padding: 0.75rem;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.model-btn:hover {
    background: var(--color-primary-dark);
}

/* 使用教程 */
.tutorial-section,
.api-docs-section {
    margin-top: 3rem;
}

.tutorial-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.tutorial-step {
    text-align: center;
    padding: 2rem;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.tutorial-step:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.tutorial-step .step-number {
    width: 60px;
    height: 60px;
    font-size: 1.5rem;
}

.tutorial-step h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-gray-900);
}

.tutorial-step p {
    font-size: 0.8rem;
    color: var(--color-gray-600);
}

/* API文档 */
.code-example {
    background: var(--color-gray-900);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: var(--color-gray-800);
    border-bottom: 1px solid var(--color-gray-700);
}

.code-lang {
    font-size: 0.875rem;
    color: var(--color-gray-400);
    font-weight: 500;
}

.copy-btn {
    padding: 0.25rem 0.75rem;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    cursor: pointer;
    transition: var(--transition);
}

.copy-btn:hover {
    background: var(--color-primary-dark);
}

.code-content {
    padding: 1.5rem;
    color: var(--color-gray-300);
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
    overflow-x: auto;
}

/* ==================== 后台控制台 ==================== */

.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--color-white);
    padding: 2rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

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

.stat-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.stat-content {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

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

.stat-action {
    margin-top: 0.5rem;
}

.mini-btn {
    padding: 0.375rem 1rem;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.mini-btn:hover {
    background: var(--color-primary-dark);
}

/* 消费预警 */
.alert-section {
    margin-bottom: 2rem;
}

.alert-card {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--color-white);
    border: 1px solid var(--color-warning);
    border-left: 4px solid var(--color-warning);
    border-radius: var(--radius-md);
}

.alert-card.warning {
    border-color: var(--color-warning);
}

.alert-icon {
    font-size: 2rem;
}

.alert-content {
    flex: 1;
}

.alert-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: 0.25rem;
}

.alert-desc {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

.alert-btn {
    padding: 0.5rem 1.5rem;
    background: var(--color-warning);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.alert-btn:hover {
    background: #d97706;
}

/* 快速操作 */
.dashboard-quick-actions {
    margin-bottom: 2rem;
}

.dashboard-quick-actions h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-gray-900);
}

.quick-actions-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.quick-action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 1.5rem;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
}

.quick-action-btn:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.action-icon {
    font-size: 2rem;
}

.quick-action-btn span:last-child {
    font-size: 0.875rem;
    color: var(--color-gray-700);
    font-weight: 500;
}

/* 运行中的实例 */
.dashboard-instances,
.dashboard-monitoring,
.consumption-trend,
.notifications-section {
    margin-bottom: 2rem;
}

.dashboard-instances h3,
.dashboard-monitoring h3,
.consumption-trend h3,
.notifications-section h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-gray-900);
}

/* 实例图标 */
.instance-icon {
    margin-right: 0.5rem;
    font-size: 1.125rem;
}

/* 资源监控 */
.monitoring-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.monitoring-card {
    background: var(--color-white);
    padding: 1.5rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
}

.monitoring-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.monitoring-title {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

.monitoring-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
}

.monitoring-bar {
    height: 8px;
    background: var(--color-gray-200);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.75rem;
}

.monitoring-progress {
    height: 100%;
    background: var(--color-primary);
    border-radius: 4px;
    transition: width 0.5s ease;
}

.monitoring-detail {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--color-gray-500);
}

/* 消费趋势 */
.trend-chart {
    background: var(--color-white);
    padding: 2rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
}

.line-chart-container {
    width: 100%;
    max-width: 100%;
    overflow-x: auto;
}

.line-chart {
    width: 100%;
    height: auto;
    min-height: 300px;
}

.chart-bars {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    height: 200px;
    gap: 1rem;
}

.chart-bar {
    flex: 1;
    background: var(--color-primary);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    position: relative;
    transition: var(--transition);
}

.chart-bar:hover {
    background: var(--color-primary-dark);
}

.bar-label {
    position: absolute;
    bottom: -1.5rem;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.75rem;
    color: var(--color-gray-500);
}

.bar-value {
    position: absolute;
    top: -1.5rem;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-gray-700);
}

/* 消息通知 */
.notifications-list {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.notification-item {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    border-bottom: 1px solid var(--color-gray-200);
    transition: var(--transition);
}

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

.notification-item:hover {
    background: var(--color-gray-50);
}

.notification-item.unread {
    background: rgba(139, 92, 246, 0.05);
}

.notification-icon {
    font-size: 1.5rem;
}

.notification-content {
    flex: 1;
}

.notification-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: 0.25rem;
}

.notification-desc {
    font-size: 0.8rem;
    color: var(--color-gray-600);
    margin-bottom: 0.25rem;
}

.notification-time {
    font-size: 0.75rem;
    color: var(--color-gray-400);
}

/* Webhook配置与安全设置 */
.webhook-security-section {
    margin-bottom: 2rem;
}

.webhook-security-section h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-gray-900);
}

.webhook-security-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.webhook-card,
.security-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.card-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1.25rem 1.5rem;
    background: var(--color-gray-50);
    border-bottom: 1px solid var(--color-gray-200);
}

.card-icon {
    font-size: 1.5rem;
}

.card-header h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin: 0;
}

.card-body {
    padding: 1.5rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-700);
    margin-bottom: 0.5rem;
}

.form-input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.form-textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-family: var(--font-main);
    resize: vertical;
    transition: var(--transition);
}

.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.form-hint {
    font-size: 0.75rem;
    color: var(--color-gray-500);
    margin-top: 0.5rem;
}

.card-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
}

.action-btn.secondary {
    background: var(--color-white);
    color: var(--color-gray-700);
    border: 1px solid var(--color-gray-300);
}

.action-btn.secondary:hover {
    background: var(--color-gray-50);
    border-color: var(--color-gray-400);
}

/* ==================== 数据表格 ==================== */

.data-table {
    width: 100%;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.data-table th,
.data-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--color-gray-200);
}

.data-table th {
    background: var(--color-gray-50);
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--color-gray-700);
}

.data-table td {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

.data-table tbody tr:hover {
    background: var(--color-gray-50);
}

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

/* 状态徽章 */
.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
}

.status-badge.running {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
}

.status-badge.success {
    background: rgba(59, 130, 246, 0.1);
    color: var(--color-info);
}

.status-badge.error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-error);
}

.status-badge.cancelled {
    background: rgba(107, 114, 128, 0.1);
    color: var(--color-gray-600);
}

/* 操作按钮 */
.action-btn-small {
    padding: 0.375rem 0.75rem;
    background: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    cursor: pointer;
    transition: var(--transition);
    margin-right: 0.5rem;
}

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

.action-btn-small.danger {
    color: var(--color-error);
    border-color: var(--color-error);
}

.action-btn-small.danger:hover {
    background: var(--color-error);
    color: var(--color-white);
}

/* 进度条 */
.progress-bar {
    width: 100%;
    height: 20px;
    background: var(--color-gray-200);
    border-radius: 10px;
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: var(--color-primary);
    transition: width 0.5s ease;
}

.progress-fill.error {
    background: var(--color-error);
}

.progress-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-white);
}

/* ==================== 模型训练页面 ==================== */

.training-templates {
    margin-bottom: 3rem;
}

.training-templates h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--color-gray-900);
}

.templates-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.template-card {
    padding: 1.5rem;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
}

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

.template-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.template-card h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-gray-900);
}

.template-card p {
    font-size: 0.8rem;
    color: var(--color-gray-600);
    margin-bottom: 1rem;
}

.template-btn {
    padding: 0.5rem 1.5rem;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
}

.template-btn:hover {
    background: var(--color-primary-dark);
}

/* 训练表单 */
.training-create,
.inference-create {
    margin-bottom: 3rem;
}

.training-create h3,
.inference-create h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--color-gray-900);
}

.training-form,
.inference-form {
    background: var(--color-white);
    padding: 2rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-700);
}

.form-input,
.form-select,
.form-textarea {
    padding: 0.75rem;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--color-gray-900);
    transition: var(--transition);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.form-textarea {
    resize: vertical;
    font-family: var(--font-main);
}

.upload-area {
    padding: 2rem;
    border: 2px dashed var(--color-gray-300);
    border-radius: var(--radius-md);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.upload-area:hover {
    border-color: var(--color-primary);
    background: rgba(139, 92, 246, 0.05);
}

.upload-icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
}

.upload-area p {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin-bottom: 0.25rem;
}

.upload-hint {
    font-size: 0.75rem;
    color: var(--color-gray-400);
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 1.5rem;
}

.btn-primary,
.btn-secondary {
    padding: 0.75rem 2rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
}

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

.btn-secondary {
    background: transparent;
    color: var(--color-gray-700);
    border: 1px solid var(--color-gray-300);
}

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

/* 训练任务列表 */
.training-list,
.inference-list {
    margin-bottom: 2rem;
}

.list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.list-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-gray-900);
}

.list-filters {
    display: flex;
    gap: 0.75rem;
}

.filter-select,
.filter-input,
.filter-date {
    padding: 0.5rem 1rem;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--color-gray-700);
}

.filter-input,
.filter-date {
    min-width: 200px;
}

/* 训练统计 */
.training-stats,
.inference-stats {
    margin-bottom: 2rem;
}

.training-stats h3,
.inference-stats h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-gray-900);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.stats-card {
    background: var(--color-white);
    padding: 1.5rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    text-align: center;
}

.stats-label {
    font-size: 0.875rem;
    color: var(--color-gray-500);
    margin-bottom: 0.5rem;
}

.stats-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.stats-trend {
    font-size: 0.75rem;
    margin-top: 0.25rem;
}

.stats-trend.up {
    color: var(--color-success);
}

.stats-trend.down {
    color: var(--color-error);
}

/* API文档 */
.api-documentation {
    margin-bottom: 2rem;
}

.api-documentation h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-gray-900);
}

.api-endpoint {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.endpoint-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background: var(--color-gray-50);
    border-bottom: 1px solid var(--color-gray-200);
}

.method {
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
}

.method.post {
    background: var(--color-success);
    color: var(--color-white);
}

.endpoint-url {
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    color: var(--color-gray-700);
}

/* 错误日志 */
.error-logs {
    margin-bottom: 2rem;
}

.error-logs h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-gray-900);
}

.error-type {
    padding: 0.25rem 0.5rem;
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-error);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
}

/* ==================== 充值中心 ==================== */

.recharge-balance {
    margin-bottom: 3rem;
}

.balance-card {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    padding: 3rem;
    border-radius: var(--radius-lg);
    color: var(--color-white);
    text-align: center;
}

.balance-label {
    font-size: 1rem;
    opacity: 0.9;
    margin-bottom: 0.5rem;
}

.balance-value {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.balance-equivalent {
    font-size: 0.875rem;
    opacity: 0.8;
    margin-bottom: 1.5rem;
}

.balance-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.balance-btn {
    padding: 0.5rem 1.5rem;
    background: rgba(255, 255, 255, 0.2);
    color: var(--color-white);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
}

.balance-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* 充值套餐 */
.recharge-packages h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--color-gray-900);
}

.packages-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1rem;
    margin-bottom: 3rem;
}

.package-card {
    position: relative;
    background: var(--color-white);
    padding: 1.5rem;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
}

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

.package-card.recommended {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
}

.package-badge {
    position: absolute;
    top: -0.75rem;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.25rem 1rem;
    background: var(--color-primary);
    color: var(--color-white);
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
}

.package-amount {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 0.5rem;
}

.package-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.25rem;
}

.package-unit {
    font-size: 0.75rem;
    color: var(--color-gray-500);
    margin-bottom: 0.5rem;
}

.package-discount {
    font-size: 0.75rem;
    color: var(--color-error);
    font-weight: 500;
    margin-bottom: 1rem;
}

.package-custom {
    margin-bottom: 1rem;
}

.package-custom input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    text-align: center;
}

.package-btn {
    width: 100%;
    padding: 0.5rem;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.package-btn:hover {
    background: var(--color-primary-dark);
}

/* 支付方式 */
.payment-methods {
    margin-bottom: 3rem;
}

.payment-methods h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-gray-900);
}

.payment-options {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.payment-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 1.5rem;
    background: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
}

.payment-option:hover {
    border-color: var(--color-primary);
}

.payment-option.active {
    border-color: var(--color-primary);
    background: rgba(139, 92, 246, 0.05);
}

.payment-icon {
    font-size: 2rem;
}

.payment-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-700);
}

/* 优惠券 */
.coupons-section {
    margin-bottom: 3rem;
}

.coupons-section h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-gray-900);
}

.coupons-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.coupon-card {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

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

.coupon-card.disabled {
    opacity: 0.5;
}

.coupon-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-error);
}

.coupon-info {
    flex: 1;
}

.coupon-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: 0.25rem;
}

.coupon-condition {
    font-size: 0.75rem;
    color: var(--color-gray-600);
    margin-bottom: 0.25rem;
}

.coupon-expire {
    font-size: 0.7rem;
    color: var(--color-gray-400);
}

.coupon-btn {
    padding: 0.5rem 1.5rem;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
}

.coupon-btn:hover {
    background: var(--color-primary-dark);
}

/* 充值记录 */
.recharge-history {
    margin-bottom: 3rem;
}

.recharge-history h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-gray-900);
}

/* 发票管理 */
.invoice-section {
    margin-bottom: 3rem;
}

.invoice-section h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-gray-900);
}

.invoice-info {
    background: var(--color-white);
    padding: 1.5rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
}

.invoice-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-gray-200);
}

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

.invoice-label {
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

.invoice-value {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-900);
}

.edit-btn {
    padding: 0.25rem 0.75rem;
    background: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    cursor: pointer;
    transition: var(--transition);
}

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

/* 充值说明 */
.recharge-notice h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-gray-900);
}

.notice-content {
    background: var(--color-white);
    padding: 1.5rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
}

.notice-content ul {
    list-style: none;
}

.notice-content li {
    padding: 0.5rem 0;
    font-size: 0.875rem;
    color: var(--color-gray-600);
    position: relative;
    padding-left: 1.5rem;
}

.notice-content li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-primary);
}

/* ==================== 计费统计 ==================== */

.billing-filters {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.export-btn {
    padding: 0.5rem 1.5rem;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.export-btn:hover {
    background: var(--color-primary-dark);
}

.billing-overview {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.overview-card {
    background: var(--color-white);
    padding: 2rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    text-align: center;
}

.overview-label {
    font-size: 0.875rem;
    color: var(--color-gray-500);
    margin-bottom: 0.5rem;
}

.overview-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.25rem;
}

.overview-trend {
    font-size: 0.75rem;
}

.overview-trend.up {
    color: var(--color-success);
}

.overview-trend.down {
    color: var(--color-error);
}

/* 图表卡片 */
.billing-charts {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.chart-card {
    background: var(--color-white);
    padding: 2rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
}

.chart-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--color-gray-900);
}

.chart-placeholder {
    height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-400);
    font-size: 0.875rem;
}

/* 饼图 */
.pie-chart {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: conic-gradient(
        var(--color-primary) 0deg 162deg,
        var(--color-success) 162deg 288deg,
        var(--color-warning) 288deg 360deg
    );
    position: relative;
    margin: 0 auto;
}

/* 成本优化建议 */
.cost-optimization {
    margin-bottom: 2rem;
}

.cost-optimization h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-gray-900);
}

.optimization-list {
    display: grid;
    gap: 1rem;
}

.optimization-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.optimization-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.optimization-icon {
    font-size: 2rem;
}

.optimization-content {
    flex: 1;
}

.optimization-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: 0.25rem;
}

.optimization-desc {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin-bottom: 0.25rem;
}

.optimization-saving {
    font-size: 0.8rem;
    color: var(--color-success);
    font-weight: 500;
}

.optimization-btn {
    padding: 0.5rem 1.5rem;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
}

.optimization-btn:hover {
    background: var(--color-primary-dark);
}

/* 预算管理 */
.budget-management {
    margin-bottom: 2rem;
}

.budget-management h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-gray-900);
}

.budget-card {
    background: var(--color-white);
    padding: 2rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
}

.budget-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.budget-label {
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

.budget-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.budget-progress {
    margin-bottom: 1rem;
}

.budget-bar {
    height: 12px;
    background: var(--color-gray-200);
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 0.75rem;
}

.budget-fill {
    height: 100%;
    background: var(--color-primary);
    transition: width 0.5s ease;
}

.budget-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--color-gray-500);
}

/* 消费明细 */
.billing-details {
    margin-bottom: 2rem;
}

.billing-details h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-gray-900);
}

/* 收费标准 */
.billing-pricing {
    margin-bottom: 2rem;
}

.billing-pricing h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-gray-900);
}

.pricing-tables {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.pricing-table {
    background: var(--color-white);
    padding: 2rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
}

.pricing-table h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-gray-900);
}

/* ==================== 订单管理 ==================== */

.orders-filters {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.orders-list {
    margin-bottom: 2rem;
}

/* 订单统计 */
.orders-statistics {
    margin-bottom: 2rem;
}

/* ==================== AI应用页面 ==================== */

.aiapps-intro {
    text-align: center;
    margin-bottom: 3rem;
}

.aiapps-intro .section-desc {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    margin-top: 0.5rem;
}

.aiapp-section {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    margin-bottom: 2rem;
}

.aiapp-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--color-gray-200);
}

.aiapp-icon {
    font-size: 4rem;
    line-height: 1;
}

.aiapp-info h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 0.5rem;
}

.aiapp-tagline {
    font-size: 1rem;
    color: var(--color-gray-600);
}

.aiapp-content {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.aiapp-desc h4,
.aiapp-features h4,
.aiapp-stats h4,
.aiapp-tech h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: 1rem;
}

.aiapp-desc p {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-gray-700);
}

.aiapp-features .features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.aiapp-features .feature-item {
    background: var(--color-gray-50);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.aiapp-features .feature-item:hover {
    background: var(--color-white);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.aiapp-features .feature-icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
}

.aiapp-features .feature-item h5 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: 0.5rem;
}

.aiapp-features .feature-item p {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    line-height: 1.6;
}

.aiapp-stats .stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.aiapp-stats .stat-item {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-white);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    text-align: center;
}

.aiapp-stats .stat-value {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.aiapp-stats .stat-label {
    font-size: 0.875rem;
    opacity: 0.9;
}

.aiapp-tech .tech-stack {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.aiapp-tech .tech-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--color-gray-50);
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
}

.aiapp-tech .tech-name {
    font-weight: 600;
    color: var(--color-gray-900);
}

.aiapp-tech .tech-desc {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

.aiapp-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 1rem;
}

.aiapp-cta .cta-btn {
    padding: 0.875rem 2rem;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.aiapp-cta .cta-btn.primary {
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
}

.aiapp-cta .cta-btn.primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
}

.aiapp-cta .cta-btn.secondary {
    background: var(--color-white);
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.aiapp-cta .cta-btn.secondary:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

/* 合作伙伴龙虾应用 */
.partner-lobster-section {
    margin-bottom: 2.5rem;
}

.partner-lobster-section h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: 1.5rem;
}

.partner-lobster-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.partner-lobster-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    transition: var(--transition);
}

.partner-lobster-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.partner-lobster-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.partner-logo {
    font-size: 2rem;
    line-height: 1;
}

.partner-lobster-header h5 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-gray-900);
}

.partner-lobster-desc {
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--color-gray-700);
    margin-bottom: 1rem;
}

.partner-lobster-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.partner-lobster-features .feature-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--color-gray-100);
    color: var(--color-gray-700);
    font-size: 0.75rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.partner-lobster-card:hover .feature-tag {
    background: var(--color-primary);
    color: var(--color-white);
}

/* ==================== 开发者中心页面 ==================== */

.api-key-section {
    margin-bottom: 3rem;
}

.api-key-card {
    background: var(--color-white);
    padding: 2rem;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.api-key-info {
    flex: 1;
}

.api-key-label {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin-bottom: 0.5rem;
}

.api-key-value {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.api-key-value code {
    font-family: 'Courier New', monospace;
    font-size: 1rem;
    color: var(--color-gray-900);
    background: var(--color-gray-100);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
}

.api-key-actions {
    display: flex;
    gap: 0.75rem;
}

.api-docs-section {
    margin-bottom: 3rem;
}

.api-docs-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.api-doc-card {
    background: var(--color-white);
    padding: 2rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    text-align: center;
    transition: var(--transition);
}

.api-doc-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.api-doc-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.api-doc-card h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-gray-900);
}

.api-doc-card p {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin-bottom: 1rem;
}

.api-doc-link {
    color: var(--color-primary);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
}

.api-doc-link:hover {
    text-decoration: underline;
}

.code-examples-section {
    margin-bottom: 3rem;
}

.code-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.code-tab {
    padding: 0.75rem 1.5rem;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-700);
    cursor: pointer;
    transition: var(--transition);
}

.code-tab:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.code-tab.active {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.code-example-wrapper {
    position: relative;
}

.code-example {
    display: none;
}

.code-example.active {
    display: block;
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: var(--color-gray-900);
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.code-lang {
    color: var(--color-white);
    font-size: 0.875rem;
    font-weight: 500;
}

.code-content {
    background: var(--color-gray-800);
    padding: 1.5rem;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    overflow-x: auto;
}

.code-content code {
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    color: #e5e7eb;
    line-height: 1.6;
}

.dev-tools-section {
    margin-bottom: 3rem;
}

.dev-tools-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.dev-tool-card {
    background: var(--color-white);
    padding: 2rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    text-align: center;
    transition: var(--transition);
}

.dev-tool-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.dev-tool-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.dev-tool-card h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-gray-900);
}

.dev-tool-card p {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin-bottom: 1rem;
}

.dev-tool-btn {
    padding: 0.5rem 1.5rem;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.dev-tool-btn:hover {
    background: var(--color-primary-dark);
}

.faq-section {
    margin-bottom: 3rem;
}

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

.faq-item {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    cursor: pointer;
    font-weight: 500;
    color: var(--color-gray-900);
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--color-gray-50);
}

.faq-icon {
    font-size: 1.5rem;
    color: var(--color-primary);
    font-weight: 300;
}

.faq-answer {
    display: none;
    padding: 0 1.5rem 1.25rem;
    border-top: 1px solid var(--color-gray-200);
}

.faq-answer p {
    padding-top: 1.25rem;
    font-size: 0.875rem;
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* 必填星号样式 */
.required {
    color: var(--color-error);
    font-weight: 500;
}

/* 响应式 */
@media (max-width: 1200px) {
    .api-docs-grid,
    .dev-tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .api-key-card {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .api-docs-grid,
    .dev-tools-grid {
        grid-template-columns: 1fr;
    }
    
    .code-tabs {
        flex-wrap: wrap;
    }
}

.order-stats-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1rem;
}

.order-stat-item {
    background: var(--color-white);
    padding: 1.5rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    text-align: center;
}

.order-stat-item .stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.25rem;
}

.order-stat-item .stat-label {
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

/* 批量操作 */
.batch-actions {
    margin-bottom: 2rem;
}

.batch-actions h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-gray-900);
}

.batch-buttons {
    display: flex;
    gap: 0.75rem;
}

.batch-btn {
    padding: 0.5rem 1.5rem;
    background: var(--color-white);
    color: var(--color-gray-700);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
}

.batch-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* ==================== 个人中心 ==================== */

.profile-content {
    display: grid;
    gap: 2rem;
}

.profile-section {
    background: var(--color-white);
    padding: 2rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
}

.profile-section h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--color-gray-900);
}

/* 实名认证 */
.certification-status {
    display: grid;
    gap: 1rem;
}

.cert-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
}

.cert-info {
    flex: 1;
}

.cert-label {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: 0.25rem;
}

.cert-desc {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

.cert-action {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.cert-status {
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
}

.cert-status.unverified {
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-error);
}

.cert-status.verified {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
}

/* 安全设置 */
.security-items {
    display: grid;
    gap: 1rem;
}

.security-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
}

.security-info {
    flex: 1;
}

.security-label {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: 0.25rem;
}

.security-desc {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin-bottom: 0.5rem;
}

.security-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

/* 子账号管理 */
.sub-accounts {
    margin-top: 1rem;
}

.sub-account-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.sub-account-header span {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

/* 通知设置 */
.notification-items {
    display: grid;
    gap: 1rem;
}

.notification-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
}

.notification-info {
    flex: 1;
}

.notification-label {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: 0.25rem;
}

.notification-desc {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

.notification-control {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.mini-input {
    width: 80px;
    padding: 0.375rem 0.75rem;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    text-align: center;
}

/* 开关按钮 */
.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-gray-300);
    transition: var(--transition);
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: var(--color-white);
    transition: var(--transition);
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--color-primary);
}

input:checked + .slider:before {
    transform: translateX(20px);
}

/* 使用统计 */
.usage-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.usage-item {
    padding: 1rem;
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
}

.usage-label {
    font-size: 0.875rem;
    color: var(--color-gray-500);
    margin-bottom: 0.25rem;
}

.usage-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
}

/* ==================== 页脚 ==================== */

.footer {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: var(--color-gray-300);
    padding: 2rem 0;
    margin-top: auto;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-brand .brand-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-white);
}

.footer-brand .brand-desc {
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--color-gray-400);
}

.footer-section h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 1rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a {
    color: var(--color-gray-400);
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--transition);
}

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

.footer-bottom {
    display: flex;
    justify-content: center;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-copyright {
    font-size: 0.875rem;
    color: var(--color-gray-500);
    text-align: center;
}

/* ==================== 模态框 ==================== */

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.modal-content {
    position: relative;
    background: var(--color-white);
    padding: 3rem 3.5rem;
    width: 90%;
    max-width: 480px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.modal-close:hover {
    color: var(--color-gray-900);
    background: var(--color-gray-100);
}

.modal-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.modal-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--color-gray-900);
}

.modal-subtitle {
    font-size: 0.9375rem;
    color: var(--color-gray-600);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: -0.5rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--color-gray-700);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.forgot-link {
    font-size: 0.875rem;
    color: var(--color-primary);
    text-decoration: none;
    transition: var(--transition);
}

.forgot-link:hover {
    color: var(--color-primary-dark);
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 0.5rem 0;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-gray-200);
}

.auth-divider span {
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

.auth-footer {
    text-align: center;
    font-size: 0.9375rem;
    color: var(--color-gray-600);
}

.auth-footer a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

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

/* ==================== 关于我们页面 ==================== */

.about-section {
    margin-bottom: 3rem;
}

.about-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: start;
}

.about-text {
    background: var(--color-white);
    padding: 2rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
}

.about-text p {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-gray-700);
    margin-bottom: 1.5rem;
}

.about-text p:last-child {
    margin-bottom: 0;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.about-stat-item {
    background: var(--color-white);
    padding: 1.5rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    text-align: center;
    transition: var(--transition);
}

.about-stat-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.about-stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.25rem;
}

.about-stat-label {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

/* 公司简介上下对齐布局 */
.about-content-vertical {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.about-content-vertical .about-text {
    background: var(--color-white);
    padding: 2rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
}

.about-content-vertical .about-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.about-content-vertical .about-stat-item {
    background: var(--color-white);
    padding: 1.5rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    text-align: center;
    transition: var(--transition);
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.business-item {
    background: var(--color-white);
    padding: 2rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.business-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.business-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.business-item h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--color-gray-900);
}

.business-item p {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    line-height: 1.6;
}

.contact-info {
    background: var(--color-white);
    padding: 2rem;
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
}

.contact-item {
    padding: 1rem 0;
    border-bottom: 1px solid var(--color-gray-200);
    display: flex;
    gap: 1rem;
}

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

.contact-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-gray-700);
    min-width: 100px;
}

.contact-item span:last-child {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

/* ==================== 响应式设计 ==================== */

@media (max-width: 1200px) {
    .services-grid,
    .advantages-grid,
    .tech-advantages-grid,
    .certifications-grid,
    .guarantee-grid,
    .contact-grid,
    .models-grid,
    .dashboard-stats,
    .monitoring-grid,
    .quick-actions-grid,
    .packages-grid,
    .payment-options,
    .billing-overview,
    .order-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .datacenter-grid,
    .use-cases-grid,
    .success-cases-grid,
    .performance-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 2rem;
    }
    
    .services-grid,
    .advantages-grid,
    .steps-grid,
    .partners-grid,
    .cases-grid,
    .news-grid,
    .contact-grid,
    .aidc-stats-grid,
    .datacenter-grid,
    .tech-advantages-grid,
    .certifications-grid,
    .guarantee-grid,
    .compute-services,
    .use-cases-grid,
    .performance-grid,
    .success-cases-grid,
    .models-grid,
    .tutorial-steps,
    .dashboard-stats,
    .monitoring-grid,
    .quick-actions-grid,
    .packages-grid,
    .payment-options,
    .coupons-list,
    .billing-overview,
    .billing-charts,
    .pricing-tables,
    .order-stats-grid,
    .usage-stats,
    .business-grid,
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .templates-grid,
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .partners-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-links {
        flex-direction: column;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .partners-grid,
    .templates-grid,
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-actions {
        gap: 0.5rem;
    }
    
    .nav-link-btn,
    .nav-cta {
        padding: 0.375rem 1rem;
        font-size: 0.8rem;
    }
}