/* OTC交易系统样式文件 - 专业金融系统设计 */

/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #06b6d4;
    --dark-color: #0f172a;
    --light-color: #f8fafc;
    --border-color: #e2e8f0;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-dark: #1e293b;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --text-white: #ffffff;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    --gradient-primary: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    --gradient-dark: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #34d399 100%);
    --gradient-danger: linear-gradient(135deg, #ef4444 0%, #f87171 100%);
    --gradient-warning: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
}

body {
    font-family: 'Inter', 'SF Pro Display', 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* 导航栏 */
.navbar {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 20px;
    color: var(--text-primary);
    text-decoration: none;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: var(--gradient-primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 16px;
}

.logo-text {
    font-weight: 700;
    color: var(--text-primary);
}

.nav-menu {
    display: flex;
    gap: 32px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 14px;
    transition: all 0.3s ease;
    position: relative;
    padding: 12px 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
    border-radius: 1px;
}

.nav-auth {
    display: flex;
    gap: 12px;
    align-items: center;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 8px;
    position: relative;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 8px;
    transition: background-color 0.3s ease;
}

.user-info:hover {
    background: var(--bg-secondary);
}

.user-avatar {
    width: 32px;
    height: 32px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 14px;
}

.user-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    min-width: 160px;
    display: none;
    z-index: 1001;
}

.user-info:hover .user-dropdown {
    display: block;
}

.user-dropdown a {
    display: block;
    padding: 12px 16px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 14px;
    transition: background-color 0.3s ease;
}

.user-dropdown a:hover {
    background: var(--bg-secondary);
}

/* 按钮样式 */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

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

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

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

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 12px;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 16px;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* 主要内容 */
main {
    margin-top: 64px;
}

/* 首页横幅 */
.hero {
    position: relative;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: var(--text-white);
    padding: 0;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.hero-gradient {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(0, 255, 255, 0.1) 0%, transparent 50%, rgba(0, 255, 255, 0.05) 100%);
    z-index: 2;
}

.hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(37, 99, 235, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(16, 185, 129, 0.05) 0%, transparent 50%);
}

.hero-container {
    position: relative;
    z-index: 3;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.hero-content {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.hero-header {
    display: flex;
    flex-direction: column;
    gap: 24px;
}


.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.1;
    color: var(--text-white);
    letter-spacing: -0.02em;
    margin-bottom: 24px;
}

.gradient-text {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 20px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.8);
    max-width: 500px;
    margin-bottom: 40px;
}

.hero-stats {
    display: flex;
    gap: 32px;
    margin-bottom: 40px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
}

.stat-number {
    font-size: 36px;
    font-weight: 800;
    color: var(--text-white);
    line-height: 1;
}

.stat-label {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 500;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-visual {
    position: relative;
}

.trading-dashboard {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 32px;
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.dashboard-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.dashboard-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--success-color);
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--success-color);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.market-overview {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 24px;
}

.market-item {
    padding: 16px;
    background: var(--bg-secondary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.market-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.market-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.market-change {
    font-size: 12px;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 4px;
}

.market-change.positive {
    background: rgba(5, 150, 105, 0.1);
    color: var(--success-color);
}

.market-change.negative {
    background: rgba(220, 38, 38, 0.1);
    color: var(--danger-color);
}

.market-price {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.market-volume {
    font-size: 12px;
    color: var(--text-secondary);
}

.chart-container {
    background: var(--bg-secondary);
    border-radius: 8px;
    padding: 16px;
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.chart-controls {
    display: flex;
    gap: 8px;
}

.chart-btn {
    padding: 4px 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-secondary);
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.chart-placeholder {
    height: 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--text-light);
    font-size: 14px;
    background: var(--bg-primary);
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 24px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 20px;
    line-height: 1.6;
    margin-bottom: 40px;
    opacity: 0.9;
    max-width: 500px;
}

.hero-stats {
    display: flex;
    gap: 40px;
    margin-bottom: 40px;
}

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

.stat-number {
    font-size: 32px;
    font-weight: 800;
    color: #fbbf24;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 14px;
    opacity: 0.8;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.hero-visual {
    position: relative;
}

.trading-dashboard {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 24px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: var(--shadow-xl);
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.dashboard-title {
    font-size: 18px;
    font-weight: 600;
}

.dashboard-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--success-color);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.price-display {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.price-item {
    flex: 1;
    text-align: center;
}

.currency {
    font-size: 12px;
    opacity: 0.8;
    margin-bottom: 4px;
}

.price {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 4px;
}

.change {
    font-size: 12px;
    font-weight: 600;
}

.change.positive {
    color: var(--success-color);
}

.change.negative {
    color: var(--danger-color);
}

.trading-chart {
    height: 120px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.chart-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

/* 特色功能区域 */
.features-section {
    padding: 100px 0;
    background: white;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-title {
    font-size: 48px;
    font-weight: 800;
    color: var(--dark-color);
    margin-bottom: 16px;
    line-height: 1.1;
}

.section-subtitle {
    font-size: 20px;
    color: var(--secondary-color);
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.feature-card {
    text-align: center;
    padding: 40px 24px;
    border-radius: 16px;
    background: white;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

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

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

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

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 32px;
    color: white;
}

.feature-card h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 16px;
}

.feature-card p {
    color: var(--secondary-color);
    line-height: 1.6;
}

/* 交易大厅 */
.trading-section {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
}

.trading-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 24px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

.trading-sidebar {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.market-list-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.market-list-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.market-filters {
    display: flex;
    gap: 8px;
}

.filter-btn {
    padding: 4px 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.market-items {
    max-height: 400px;
    overflow-y: auto;
}

.market-row {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: background-color 0.3s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.market-row:hover {
    background: var(--bg-secondary);
}

.market-row.active {
    background: rgba(30, 64, 175, 0.1);
    border-left: 3px solid var(--primary-color);
}

.market-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.market-symbol {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.market-name {
    font-size: 12px;
    color: var(--text-secondary);
}

.market-price {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    text-align: right;
}

.market-change {
    font-size: 12px;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 4px;
    text-align: right;
}

.market-change.positive {
    background: rgba(5, 150, 105, 0.1);
    color: var(--success-color);
}

.market-change.negative {
    background: rgba(220, 38, 38, 0.1);
    color: var(--danger-color);
}

.trading-main {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.trading-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.trading-pair {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.pair-symbol {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.pair-name {
    font-size: 14px;
    color: var(--text-secondary);
}

.trading-price {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
}

.current-price {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

.price-change {
    font-size: 14px;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 6px;
}

.price-change.positive {
    background: rgba(5, 150, 105, 0.1);
    color: var(--success-color);
}

.price-change.negative {
    background: rgba(220, 38, 38, 0.1);
    color: var(--danger-color);
}

.trading-content {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 24px;
    padding: 24px;
}

.order-book {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.order-book-header {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    padding: 12px 16px;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-align: center;
}

.order-book-body {
    max-height: 300px;
    overflow-y: auto;
}

.order-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    padding: 8px 16px;
    font-size: 12px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.3s ease;
}

.order-row:hover {
    background: var(--bg-primary);
}

.order-row.sell {
    color: var(--danger-color);
}

.order-row.buy {
    color: var(--success-color);
}

.spread-row {
    padding: 8px 16px;
    text-align: center;
    font-size: 12px;
    color: var(--text-secondary);
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
}

.trading-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.trading-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    flex: 1;
    padding: 12px;
    border: none;
    background: var(--bg-primary);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.trading-form {
    padding: 20px;
}

.trading-form .form-group {
    margin-bottom: 16px;
}

.trading-form label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.trading-form input {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: border-color 0.3s ease;
}

.trading-form input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.trading-form input[readonly] {
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

/* 交易流程 */
.process-section {
    padding: 100px 0;
    background: var(--bg-primary);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

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

.step-item:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 40px;
    right: -20px;
    width: 40px;
    height: 2px;
    background: var(--gradient-primary);
    z-index: 1;
}

.step-number {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    color: white;
    margin: 0 auto 24px;
    position: relative;
    z-index: 2;
}

.step-content h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.step-content p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 安全保障 */
.security-section {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.security-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.security-features {
    margin-top: 40px;
}

.security-item {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 32px;
}

.security-item i {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
}

.security-item h4 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.security-item p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.security-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.security-badge {
    width: 200px;
    height: 200px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    text-align: center;
    box-shadow: var(--shadow-xl);
}

.security-badge i {
    font-size: 48px;
    margin-bottom: 16px;
}

.security-badge span {
    font-size: 18px;
    font-weight: 600;
}

/* 联系我们 */
.contact-section {
    padding: 100px 0;
    background: var(--bg-primary);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
    margin-top: 60px;
}

.contact-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

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

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

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

.contact-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 32px;
    margin-bottom: 24px;
}

.contact-content h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.contact-desc {
    color: var(--text-secondary);
    font-size: 16px;
    margin-bottom: 24px;
    line-height: 1.6;
}

.contact-details {
    margin-bottom: 24px;
}

.contact-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

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

.contact-item .label {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
}

.contact-item .value {
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
}

.service-info {
    margin-top: 80px;
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 40px;
    border: 1px solid var(--border-color);
}

.service-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
}

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

.service-stats .stat-number {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 8px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.service-stats .stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* 订单管理 */
.orders-section {
    padding: 100px 0;
    background: white;
}

.section-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}

.orders-table-container {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.table-responsive {
    overflow-x: auto;
}

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

.orders-table th {
    background: var(--light-color);
    font-weight: 600;
    color: var(--dark-color);
    padding: 20px 16px;
    text-align: left;
    font-size: 14px;
    border-bottom: 1px solid var(--border-color);
}

.orders-table td {
    padding: 20px 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--dark-color);
}

.orders-table tbody tr:hover {
    background: var(--light-color);
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--secondary-color);
}

.empty-state i {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
}

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

.modal-content {
    background-color: white;
    margin: 5% auto;
    border-radius: 20px;
    width: 90%;
    max-width: 480px;
    position: relative;
    box-shadow: var(--shadow-xl);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 32px 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 24px;
}

.modal-header h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--dark-color);
}

.close {
    font-size: 24px;
    font-weight: bold;
    cursor: pointer;
    color: var(--secondary-color);
    transition: color 0.3s ease;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.close:hover {
    color: var(--dark-color);
    background: var(--light-color);
}

.modal-body {
    padding: 0 32px 32px;
}

/* 表单样式 */
.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark-color);
    font-size: 14px;
}

.form-help {
    margin-top: 6px;
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.4;
}

.input-group {
    position: relative;
    display: flex;
    align-items: center;
}

.input-group i {
    position: absolute;
    left: 16px;
    color: var(--secondary-color);
    z-index: 2;
}

.input-group input,
.input-group select {
    width: 100%;
    padding: 16px 16px 16px 48px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 14px;
    transition: all 0.3s ease;
    background: white;
    color: var(--text-primary);
}

.input-group input:focus,
.input-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.input-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6,9 12,15 18,9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 16px center;
    background-size: 16px;
    padding-right: 48px;
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--secondary-color);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    position: relative;
    transition: all 0.3s ease;
}

.checkbox-label input[type="checkbox"]:checked + .checkmark {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.checkbox-label input[type="checkbox"]:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 10px;
    font-weight: bold;
}

.forgot-password {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

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

/* 页脚 */
.footer {
    background: var(--dark-color);
    color: white;
    padding: 80px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 24px;
    margin-bottom: 16px;
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
    margin-bottom: 24px;
    max-width: 300px;
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

.footer-section h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 24px;
    color: white;
}

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

.footer-section ul li {
    margin-bottom: 12px;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: 14px;
}

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

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
}

.contact-item i {
    width: 16px;
    color: var(--primary-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 24px;
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content h1 {
        font-size: 36px;
    }
    
    .trading-grid {
        grid-template-columns: 1fr;
    }
    
    .orders-table {
        overflow-x: auto;
    }
}

/* 需要登录模态框样式 */
.login-required-content {
    text-align: center;
    padding: 2rem 0;
}

.login-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
}

.login-required-content h4 {
    margin: 0 0 1rem 0;
    color: #1f2937;
    font-size: 1.3rem;
    font-weight: 600;
}

.login-required-content p {
    margin: 0 0 2rem 0;
    color: #6b7280;
    font-size: 1rem;
    line-height: 1.5;
}

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

/* 新的专业设计样式 */
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(0, 255, 255, 0.1);
    border: 1px solid rgba(0, 255, 255, 0.3);
    border-radius: 50px;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(10px);
}

.hero-badge i {
    color: #00ffff;
}

.gradient-text {
    background: linear-gradient(45deg, #00ffff, #0080ff, #00ffff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-shift 3s ease-in-out infinite;
}

@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.stat-number {
    font-size: 2.2rem;
    font-weight: 700;
    color: #00ffff;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
    font-weight: 500;
}

.btn-ghost {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

/* 交易预览样式 */
.trading-preview {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 2rem;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.preview-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: white;
    font-weight: 600;
}

.preview-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #10b981;
}

.status-dot.active {
    background: #00ffff;
    box-shadow: 0 0 10px rgba(0, 255, 255, 0.5);
}

.market-ticker {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.ticker-item {
    flex: 1;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 1rem;
    text-align: center;
}

.ticker-symbol {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0.5rem;
}

.ticker-price {
    font-size: 1.2rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.25rem;
}

.ticker-change {
    font-size: 0.8rem;
    font-weight: 600;
}

.ticker-change.positive {
    color: #10b981;
}

.ticker-change.negative {
    color: #ef4444;
}

.trading-interface {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 1.5rem;
}

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

.interface-tabs {
    display: flex;
    gap: 0.5rem;
}

.tab-btn {
    padding: 0.5rem 1rem;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn.active {
    background: rgba(0, 255, 255, 0.2);
    border-color: #00ffff;
    color: #00ffff;
}

.currency-select {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    color: white;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.interface-content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.price-display {
    text-align: center;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
}

.current-price {
    font-size: 2rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.5rem;
}

.price-change {
    font-size: 1rem;
    color: #10b981;
    font-weight: 600;
}

.order-book {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.order-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    font-size: 0.9rem;
}

.order-price {
    color: #00ffff;
    font-weight: 600;
}

.order-amount {
    color: rgba(255, 255, 255, 0.8);
}

.order-total {
    color: rgba(255, 255, 255, 0.6);
}

/* 优势卡片样式 */
.advantages-section {
    padding: 100px 0;
    background: var(--bg-primary);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.advantage-card {
    display: flex;
    gap: 1.5rem;
    padding: 2rem;
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.advantage-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.advantage-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.advantage-content h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.advantage-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

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

.feature-tag {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* 流程步骤样式 */
.process-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

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

.step-visual {
    position: relative;
    margin-bottom: 1.5rem;
}

.step-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
    margin: 0 auto 1rem;
}

.step-number {
    position: absolute;
    top: -10px;
    right: -10px;
    width: 30px;
    height: 30px;
    background: var(--gradient-success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 0.9rem;
}

.step-content h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.step-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.step-features {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.feature-item {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* 注册表单增强样式 */
.form-help {
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* 支付密码输入框样式 */
input[type="password"][pattern="[0-9]{6}"] {
    text-align: center;
    font-size: 1.2rem;
    letter-spacing: 0.3rem;
    font-family: 'Courier New', monospace;
    font-weight: bold;
}

input[type="password"][pattern="[0-9]{6}"]:focus {
    letter-spacing: 0.3rem;
}

/* 手机号码输入框样式 */
input[type="tel"][pattern="^1[3-9]\\d{9}$"] {
    font-family: 'Courier New', monospace;
    letter-spacing: 0.1rem;
}

/* 注册模态框优化样式 */
.register-modal-content {
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

.register-modal-content .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.register-modal-content .form-row .form-group {
    margin-bottom: 0;
}

.register-modal-content .modal-body {
    padding: 1.5rem;
}

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

.register-modal-content .form-group label {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.register-modal-content .input-group {
    height: 40px;
}

.register-modal-content .input-group i {
    position: absolute;
    left: 12px;
    color: var(--secondary-color);
    z-index: 2;
    font-size: 0.875rem;
}

.register-modal-content .input-group input {
    font-size: 0.875rem;
    padding: 0.5rem 0.75rem 0.5rem 2.5rem;
}

.register-modal-content .form-help {
    font-size: 0.75rem;
    margin-top: 0.25rem;
    line-height: 1.3;
}

.register-modal-content .form-options {
    margin: 1rem 0;
}

.register-modal-content .checkbox-label {
    font-size: 0.8rem;
    line-height: 1.4;
}

.register-modal-content .btn-block {
    height: 40px;
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

/* 短信验证码样式 */
.sms-input-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sms-input-group input {
    flex: 1;
    min-width: 0;
}

.sms-input-group .btn-sm {
    height: 32px;
    padding: 0 0.75rem;
    font-size: 0.75rem;
    white-space: nowrap;
    flex-shrink: 0;
}

.sms-input-group .btn-sm:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* 响应式优化 */
@media (max-width: 768px) {
    .register-modal-content {
        max-width: 95vw;
        margin: 0.5rem;
        max-height: 95vh;
    }
    
    .register-modal-content .modal-body {
        padding: 1rem;
    }
    
    .register-modal-content .form-row {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .register-modal-content .form-group {
        margin-bottom: 0.75rem;
    }
    
    .register-modal-content .input-group {
        height: 36px;
    }
    
    .register-modal-content .input-group i {
        left: 10px;
        font-size: 0.8rem;
    }
    
    .register-modal-content .input-group input {
        font-size: 0.8rem;
        padding: 0.4rem 0.6rem 0.4rem 2.2rem;
    }
}

/* 换绑手机号模态框样式 */
.change-phone-steps {
    margin-bottom: 1.5rem;
}

.step {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 1rem;
    overflow: hidden;
}

.step-header {
    background: var(--bg-secondary);
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.step-number {
    background: var(--primary-color);
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 600;
    flex-shrink: 0;
}

.step-header h4 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.step-content {
    padding: 1rem;
}

.step-content p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.phone-display {
    background: var(--bg-secondary);
    padding: 0.75rem;
    border-radius: 6px;
    margin-bottom: 1rem;
    border: 1px solid var(--border-color);
}

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

.phone-display span {
    color: var(--primary-color);
    font-family: 'Courier New', monospace;
    font-weight: 600;
}

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

.step-content .form-group:last-child {
    margin-bottom: 0;
}

.step-content .btn {
    width: 100%;
    justify-content: center;
}

.step-content .btn-secondary {
    background: var(--secondary-color);
    color: white;
    border: none;
}

.step-content .btn-secondary:hover {
    background: #475569;
}

.step-content .btn-secondary:disabled {
    background: var(--text-light);
    cursor: not-allowed;
}

/* 谷歌身份认证模态框样式 */
.google-auth-modal {
    max-width: 600px;
    width: 95%;
}

.google-auth-modal .modal-header {
    background: linear-gradient(135deg, #4285f4 0%, #34a853 100%);
    color: white;
    border-radius: 12px 12px 0 0;
    padding: 1.5rem;
    border: none;
}

.google-auth-modal .modal-header h3 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* 认证信息区域 */
.auth-info {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.auth-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #4285f4 0%, #34a853 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    flex-shrink: 0;
}

.auth-details {
    flex: 1;
}

.auth-details h4 {
    margin: 0 0 0.5rem 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.auth-details p {
    margin: 0 0 1rem 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* QR码和密钥显示 */
.qr-code {
    width: 120px;
    height: 120px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    margin-bottom: 1rem;
}

.qr-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 120px;
}

.qr-container img {
    max-width: 100%;
    max-height: 100%;
    border-radius: 8px;
}

.qr-placeholder {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.qr-placeholder i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--text-light);
}

.loading-spinner {
    width: 24px;
    height: 24px;
    border: 2px solid var(--border-color);
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 0.5rem;
}

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

.secret-key {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.75rem;
    background: white;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin-bottom: 1rem;
}

.secret-key strong {
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 600;
    white-space: nowrap;
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.secret-key code {
    flex: 1;
    font-family: 'Courier New', monospace;
    font-size: 0.8rem;
    color: var(--primary-color);
    font-weight: 600;
    letter-spacing: 1px;
    word-break: break-all;
    background: none;
    padding: 0;
    line-height: 1.4;
}

.secret-key .btn-sm {
    flex-shrink: 0;
    margin-left: 0.5rem;
}


/* 响应式设计 */
@media (max-width: 768px) {
    .google-auth-modal {
        width: 98%;
        margin: 0.5rem;
    }
    
    .auth-info {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }
    
    .auth-icon {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }
    
    .qr-code {
        width: 100px;
        height: 100px;
    }
    
    .secret-key {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .secret-key code {
        font-size: 0.75rem;
        word-break: break-all;
        line-height: 1.3;
    }
    
    .secret-key .btn-sm {
        margin-left: 0;
        margin-top: 0.5rem;
        width: 100%;
    }
    
    .qr-container {
        min-height: 100px;
    }
    
    .qr-manual-instructions {
        margin-top: 0.75rem !important;
        padding: 0.75rem !important;
    }
}

/* 实名认证模态框样式 */
.kyc-modal {
    max-width: 800px;
    width: 95%;
    max-height: 90vh;
    overflow-y: auto;
}

.kyc-modal .modal-header {
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    color: white;
    border-radius: 12px 12px 0 0;
    padding: 1.5rem;
    border: none;
}

.kyc-modal .modal-header h3 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* 认证状态显示 */
.kyc-status {
    padding: 2rem;
    text-align: center;
}

.status-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    color: var(--text-secondary);
}

.status-loading i {
    font-size: 2rem;
    color: var(--primary-color);
}

.status-info {
    padding: 2rem;
    border-radius: 12px;
    border: 2px solid var(--border-color);
    background: var(--bg-secondary);
}

.status-info.approved {
    border-color: var(--success-color);
    background: rgba(34, 197, 94, 0.1);
}

.status-info.pending {
    border-color: var(--warning-color);
    background: rgba(245, 158, 11, 0.1);
}

.status-info.rejected {
    border-color: var(--danger-color);
    background: rgba(239, 68, 68, 0.1);
}

.status-info i {
    font-size: 3rem;
    margin-bottom: 1rem;
}

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

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

.status-info.rejected i {
    color: var(--danger-color);
}

.status-info h4 {
    margin: 0 0 1rem 0;
    font-size: 1.25rem;
    font-weight: 600;
}

.status-details {
    text-align: left;
    margin: 1.5rem 0;
    padding: 1rem;
    background: white;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.status-details p {
    margin: 0.5rem 0;
    font-size: 0.9rem;
}

/* 认证表单样式 */
.kyc-form {
    padding: 1.5rem;
}

.form-section {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.form-section h4 {
    margin: 0 0 1.5rem 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* 上传区域样式 */
.upload-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.upload-item {
    position: relative;
}

.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 2rem 1rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: white;
    min-height: 150px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.upload-area i {
    font-size: 2rem;
    color: var(--text-light);
}

.upload-area p {
    margin: 0;
    font-weight: 600;
    color: var(--text-primary);
}

.upload-hint {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.upload-preview {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    border: 2px solid var(--success-color);
    background: white;
}

.upload-preview img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    display: block;
    border-radius: 8px;
}

.upload-preview {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    border: 2px solid var(--success-color);
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.btn-remove {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--danger-color);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    transition: all 0.3s ease;
}

.btn-remove:hover {
    background: #dc2626;
    transform: scale(1.1);
}

/* 表单操作按钮 */
.kyc-form .form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .kyc-modal {
        width: 98%;
        margin: 0.5rem;
        max-height: 95vh;
    }
    
    .upload-grid {
        grid-template-columns: 1fr;
    }
    
    .upload-area {
        min-height: 120px;
        padding: 1.5rem 1rem;
    }
    
    .upload-preview img {
        height: 120px;
    }
    
    .kyc-form .form-actions {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .kyc-form .form-actions .btn {
        width: 100%;
    }
    
    .status-info {
        padding: 1.5rem;
    }
    
    .status-info i {
        font-size: 2.5rem;
    }
}