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

:root {
    /* 主色调 */
    --primary-dark: #0F172A;        /* 深空蓝 */
    --gradient-start: #4F46E5;      /* 渐变蓝紫起始 */
    --gradient-end: #7C3AED;        /* 渐变蓝紫结束 */
    
    /* 辅助色 */
    --light-gray: #F1F5F9;          /* 浅灰 */
    --bright-blue: #2563EB;         /* 亮蓝 */
    --neon-green: #10B981;          /* 霓虹绿 */
    
    /* 文本颜色 */
    --text-primary: #1E293B;
    --text-secondary: #64748B;
    --text-light: #94A3B8;
    --text-white: #FFFFFF;
    
    /* 背景色 */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8FAFC;
    --bg-dark: #0F172A;
    
    /* 主题切换过渡 */
    --theme-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* 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);
    
    /* 圆角 */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* 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-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
}

/* 深色模式变量 */
[data-theme="dark"] {
    /* 文本颜色 */
    --text-primary: #F8FAFC;
    --text-secondary: #CBD5E1;
    --text-light: #94A3B8;
    --text-white: #FFFFFF;
    
    /* 背景色 */
    --bg-primary: #0F172A;
    --bg-secondary: #1E293B;
    --bg-dark: #020617;
    
    /* 辅助色调整 */
    --light-gray: #334155;
    
    /* 阴影调整 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    transition: var(--theme-transition);
}

/* 链接样式 */
a {
    color: var(--bright-blue);
    text-decoration: none;
    transition: var(--theme-transition);
}

a:hover {
    color: var(--gradient-start);
    text-decoration: underline;
}

/* 主题切换按钮 */
.theme-toggle {
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: var(--theme-transition);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    color: var(--text-white);
    background: rgba(79, 70, 229, 0.1);
}

.theme-toggle i {
    font-size: var(--font-size-lg);
    transition: var(--theme-transition);
}

.theme-toggle .sun-icon {
    position: absolute;
    opacity: 1;
    transform: rotate(0deg);
}

.theme-toggle .moon-icon {
    position: absolute;
    opacity: 0;
    transform: rotate(180deg);
}

[data-theme="dark"] .theme-toggle .sun-icon {
    opacity: 0;
    transform: rotate(180deg);
}

[data-theme="dark"] .theme-toggle .moon-icon {
    opacity: 1;
    transform: rotate(0deg);
}

/* 深色模式下的按钮优化 */
[data-theme="dark"] .btn-primary {
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

[data-theme="dark"] .btn-primary:hover {
    box-shadow: 0 8px 25px rgba(79, 70, 229, 0.5);
    background: linear-gradient(135deg, #6366F1, #A855F7);
}

[data-theme="dark"] .btn-primary i.custom-icon {
    filter: brightness(1.15);
}

[data-theme="dark"] .btn-primary:hover i.custom-icon {
    filter: brightness(1.25);
}

/* 深色模式下的CTA卡片按钮 */
[data-theme="dark"] .cta-card .btn-primary {
    box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.25);
}

[data-theme="dark"] .cta-card .btn-primary:hover {
    box-shadow: 0 10px 30px rgba(79, 70, 229, 0.5);
    background: linear-gradient(135deg, #6366F1, #A855F7);
}

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

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: var(--spacing-md) 0;
    transition: var(--theme-transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-white);
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.nav-logo i {
    color: var(--gradient-start);
    font-size: var(--font-size-2xl);
}

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

.nav-link {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: var(--theme-transition);
    position: relative;
}

.nav-link:hover {
    color: var(--text-white);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.btn-connect {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: var(--text-white);
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-lg);
    font-weight: 600;
    cursor: pointer;
    transition: var(--theme-transition);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    position: relative;
    overflow: hidden;
}

.btn-connect i {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.btn-connect i.custom-icon {
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    width: 16px;
    height: 16px;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
    background: none;
    border: none;
    padding: 0;
    width: 30px;
    height: 30px;
    justify-content: center;
    align-items: center;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--text-white);
    transition: all 0.3s ease;
    border-radius: 2px;
}

/* 主要内容区域 */
main {
    margin-top: 80px;
}

/* 英雄区域 */
.hero {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--light-gray) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="%234F46E5" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="%237C3AED" opacity="0.1"/><circle cx="50" cy="10" r="0.5" fill="%234F46E5" opacity="0.05"/><circle cx="10" cy="60" r="0.5" fill="%237C3AED" opacity="0.05"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    pointer-events: none;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.gradient-text {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: var(--text-white);
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

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

.btn-primary i {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    transition: var(--theme-transition);
}

.btn-primary span {
    position: relative;
    z-index: 1;
    transition: var(--theme-transition);
}

.btn-primary:hover span {
    transform: translateX(2px);
}

.btn-primary i.custom-icon {
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    width: 24px;
    height: 24px;
    border-radius: 4px;
    filter: brightness(1.1);
    transition: var(--theme-transition);
}

.btn-primary:hover i.custom-icon {
    filter: brightness(1.2);
    transform: scale(1.05);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(79, 70, 229, 0.4);
    background: linear-gradient(135deg, #5B52E8, #8B5CF6);
}

.btn-primary:active {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
}

.btn-primary:focus {
    outline: none;
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3), 0 0 0 3px rgba(79, 70, 229, 0.2);
}

.btn-primary:focus-visible {
    outline: 2px solid var(--gradient-start);
    outline-offset: 2px;
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--text-primary);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: var(--theme-transition);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    position: relative;
    overflow: hidden;
}

.btn-secondary i {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.btn-secondary i.custom-icon {
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    width: 20px;
    height: 20px;
}

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

/* 信任指标 */
.trust-indicators {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.trust-item i {
    color: var(--neon-green);
    font-size: var(--font-size-base);
}

/* 收益滚动展示 */
.earnings-ticker {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(79, 70, 229, 0.1);
    margin-bottom: var(--spacing-lg);
    transition: var(--theme-transition);
}

.ticker-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
    color: var(--text-primary);
}

.ticker-header i {
    color: var(--neon-green);
}

.ticker-content {
    max-height: none;
    overflow: visible;
}

.earnings-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--light-gray);
    animation: fadeInUp 0.5s ease-out;
}

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

.earnings-user {
    font-weight: 500;
    color: var(--text-primary);
}

.earnings-amount {
    font-weight: 600;
    color: var(--neon-green);
}

/* 统计数据卡片 */
.stats-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(79, 70, 229, 0.1);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    transition: var(--theme-transition);
}

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

.stats-card .stat-number {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--gradient-start);
    margin-bottom: var(--spacing-xs);
}

.stats-card .stat-label {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* 加密货币卡片 */
.crypto-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(79, 70, 229, 0.1);
}

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

.coin-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    color: var(--text-primary);
}

.coin-info i {
    color: var(--gradient-start);
    font-size: var(--font-size-lg);
}

.price-change {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.price-change.positive {
    background: rgba(16, 185, 129, 0.1);
    color: var(--neon-green);
}

.price-change.negative {
    background: rgba(239, 68, 68, 0.1);
    color: #EF4444;
}

.current-price {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.currency {
    color: var(--text-secondary);
    font-size: var(--font-size-2xl);
}

.price-chart {
    height: 100px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
}

/* 交易所排行榜区域 */
.exchanges {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-primary);
}

.update-time {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-md);
}

.update-time i {
    color: var(--gradient-start);
}

/* 交易所表格 */
.exchanges-table-desktop {
    overflow-x: auto;
    margin-top: var(--spacing-2xl);
}

.exchanges-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.exchanges-table th,
.exchanges-table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--light-gray);
}

.exchanges-table th {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.exchanges-table td {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.exchange-logo {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    margin-right: var(--spacing-sm);
}

.exchange-name {
    display: flex;
    align-items: center;
    font-weight: 600;
    color: var(--text-primary);
}

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

.fee {
    color: var(--neon-green);
    font-weight: 500;
}

.security-stars {
    color: #F59E0B;
    font-size: var(--font-size-sm);
}

.fiat-supported {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.fiat-tag {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
}

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

.action-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--gradient-start);
    background: transparent;
    color: var(--gradient-start);
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-size: var(--font-size-xs);
    font-weight: 500;
    transition: all 0.3s ease;
}

.action-btn:hover {
    background: var(--gradient-start);
    color: var(--text-white);
}

/* 移动端交易所卡片 */
.exchanges-cards-mobile {
    display: none;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.exchange-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(79, 70, 229, 0.1);
    transition: var(--theme-transition);
}

.exchange-card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.exchange-rank {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: var(--text-white);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: var(--font-size-sm);
    flex-shrink: 0;
}

.exchange-card-info h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    flex: 1;
}

.exchange-card-info .rank {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.exchange-card-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

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

.exchange-stat-label {
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
    margin-bottom: var(--spacing-xs);
}

.exchange-stat-value {
    font-weight: 600;
    color: var(--text-primary);
}

.exchange-card-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.exchange-card-actions .action-btn {
    flex: 1;
    text-align: center;
    padding: var(--spacing-sm);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-header h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.section-header p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

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

.feature-card {
    background: var(--bg-primary);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(79, 70, 229, 0.1);
    transition: var(--theme-transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
}

.feature-icon i {
    font-size: var(--font-size-2xl);
    color: var(--text-white);
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

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

/* 收益展示区域 */
.earnings {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
}

.earnings-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.earnings-stats {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.earnings-stat {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon i {
    font-size: var(--font-size-xl);
    color: var(--text-white);
}

.stat-content {
    flex: 1;
}

.stat-content .stat-number {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.stat-content .stat-label {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.earnings-feed {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    max-height: 400px;
    overflow-y: auto;
}

.earnings-feed-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--light-gray);
    animation: fadeInUp 0.5s ease-out;
}

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

.earnings-feed-user {
    font-weight: 500;
    color: var(--text-primary);
}

.earnings-feed-amount {
    font-weight: 600;
    color: var(--neon-green);
}

.earnings-feed-time {
    color: var(--text-light);
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-xs);
}

/* 关于我们区域 */
.about {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-primary);
}

.advantages {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.advantage-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.advantage-item i {
    color: var(--gradient-start);
    font-size: var(--font-size-lg);
    margin-top: var(--spacing-xs);
    flex-shrink: 0;
}

.advantage-item h4 {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.advantage-item p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

.cta-card {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: var(--text-white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-xl);
}

.cta-card h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.cta-card p {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
}

.cta-card .btn-primary {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: var(--text-white);
    margin: 0 auto var(--spacing-lg) auto;
    box-shadow: 0 6px 20px rgba(79, 70, 229, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    width: fit-content;
    min-width: 200px;
}

.cta-card .btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(79, 70, 229, 0.4);
    background: linear-gradient(135deg, #5B52E8, #8B5CF6);
}

.cta-card .btn-primary:active {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(79, 70, 229, 0.3);
}

.cta-features {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.cta-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

.cta-feature i {
    color: var(--neon-green);
}

/* 最终行动号召 */
.final-cta {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--primary-dark), var(--bg-dark));
    color: var(--text-white);
    text-align: center;
}

.cta-content h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-2xl);
    opacity: 0.9;
}

.cta-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
}

.btn-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.btn-large i {
    width: 24px;
    height: 24px;
    font-size: var(--font-size-lg);
}

.btn-large i.custom-icon {
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    width: 24px;
    height: 24px;
}

.cta-guarantee {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-light);
    font-size: var(--font-size-sm);
}

.cta-guarantee i {
    color: var(--neon-green);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.about-text h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.about-text p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-2xl);
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

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

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--gradient-start);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.tech-stack {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.tech-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.tech-item i {
    font-size: var(--font-size-2xl);
    color: var(--gradient-start);
    width: 40px;
    text-align: center;
}

.tech-item span {
    font-weight: 600;
    color: var(--text-primary);
}

/* 联系我们区域 */
.contact {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-primary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    margin-top: var(--spacing-2xl);
}

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

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
}

.contact-item i {
    font-size: var(--font-size-xl);
    color: var(--gradient-start);
    width: 40px;
    text-align: center;
}

.contact-item h4 {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.contact-item p {
    color: var(--text-secondary);
}

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

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

.form-group input,
.form-group textarea {
    padding: var(--spacing-md);
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    transition: border-color 0.3s ease;
    background: var(--bg-primary);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--gradient-start);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* 页脚 */
.footer {
    background: var(--primary-dark);
    color: var(--text-white);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
    transition: var(--theme-transition);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.footer-logo i {
    color: var(--gradient-start);
    font-size: var(--font-size-2xl);
}

.footer-section p {
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.footer-cta {
    margin-bottom: var(--spacing-lg);
    display: flex;
    justify-content: center;
    align-items: center;
}

.btn-small {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
}

.btn-small i {
    font-size: var(--font-size-sm);
    width: 14px;
    height: 14px;
}

.btn-small i.custom-icon {
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    width: 14px;
    height: 14px;
}

.footer-section h4 {
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-white);
}

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

.footer-section ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-section ul li a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

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

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(79, 70, 229, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--gradient-start);
    color: var(--text-white);
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    text-align: center;
    color: var(--text-light);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        text-align: center;
    }
    
    .earnings-showcase {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .advantages {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-xl);
    }
    
    .exchanges-table-desktop {
        display: none;
    }
    
    .exchanges-cards-mobile {
        display: grid;
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--primary-dark);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: var(--spacing-2xl);
        transition: left 0.3s ease;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hamburger:focus {
        outline: 2px solid var(--gradient-start);
        outline-offset: 2px;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    /* 确保hamburger按钮在移动端正确显示 */
    .hamburger {
        z-index: 1001;
        position: relative;
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-card {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .earnings-stats {
        gap: var(--spacing-md);
    }
    
    .earnings-stat {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .cta-features {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    /* 移动端页脚优化 */
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-lg);
    }
    
    .footer-section {
        padding: var(--spacing-md) 0;
    }
    
    .footer-section h4 {
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-sm);
    }
    
    .footer-section ul {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-sm);
    }
    
    .footer-section ul li {
        margin-bottom: 0;
    }
    
    .footer-section ul li a {
        font-size: var(--font-size-sm);
        padding: var(--spacing-xs) var(--spacing-sm);
        background: rgba(255, 255, 255, 0.1);
        border-radius: var(--radius-sm);
        transition: all 0.3s ease;
    }
    
    .footer-section ul li a:hover {
        background: rgba(255, 255, 255, 0.2);
    }
    
    .footer-logo {
        font-size: var(--font-size-lg);
        margin-bottom: var(--spacing-sm);
    }
    
    .footer-section p {
        font-size: var(--font-size-sm);
        margin-bottom: var(--spacing-md);
    }
    
    .social-links {
        justify-content: center;
        margin-top: var(--spacing-md);
    }
    
    .footer-bottom {
        font-size: var(--font-size-xs);
        padding-top: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero {
        padding: var(--spacing-2xl) 0;
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
        justify-content: center;
        padding: var(--spacing-lg) var(--spacing-xl);
        font-size: var(--font-size-lg);
    }
    
    .btn-primary i.custom-icon {
        width: 28px;
        height: 28px;
    }
    
    .cta-card .btn-primary {
        width: 100%;
        max-width: 300px;
        margin: 0 auto var(--spacing-lg) auto;
    }
    
    .crypto-card {
        padding: var(--spacing-lg);
    }
    
    .current-price {
        font-size: var(--font-size-3xl);
    }
    
    .feature-card {
        padding: var(--spacing-lg);
    }
    
    .section-header h2 {
        font-size: var(--font-size-3xl);
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

.hero-content {
    animation: fadeInLeft 1s ease-out;
}

.hero-visual {
    animation: fadeInRight 1s ease-out;
}

.feature-card {
    animation: fadeInUp 0.6s ease-out;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light-gray);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-start);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gradient-end);
}

/* 选择文本样式 */
::selection {
    background: rgba(79, 70, 229, 0.2);
    color: var(--text-primary);
}

/* Web3风格增强 */
.success-state {
    color: var(--neon-green);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 500;
}

.warning-state {
    color: #F59E0B;
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 500;
}

/* 数据高亮 */
.data-highlight {
    color: var(--bright-blue);
    font-weight: 600;
    background: rgba(37, 99, 235, 0.1);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}

/* 价格变化指示器 */
.price-up {
    color: var(--neon-green);
    background: rgba(16, 185, 129, 0.1);
}

.price-down {
    color: #EF4444;
    background: rgba(239, 68, 68, 0.1);
}

/* ===== 最新活动区域样式 ===== */
.latest-activities {
    padding: var(--spacing-xl) 0;
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

.latest-activities::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gradient-start), transparent);
}

.activities-list {
    display: grid;
    gap: var(--spacing-lg);
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    margin-top: var(--spacing-xl);
}

.activity-item {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(79, 70, 229, 0.1);
    transition: var(--theme-transition);
    position: relative;
    overflow: hidden;
}

.activity-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--gradient-start), var(--gradient-end));
}

.activity-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(79, 70, 229, 0.2);
}

.activity-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.activity-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--text-white);
    flex-shrink: 0;
}

/* 当使用图片作为活动图标时 */
.activity-icon.img-icon {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: transparent;
}

.activity-icon.user-activity {
    background: linear-gradient(135deg, var(--neon-green), #059669);
}

.activity-icon.system-activity {
    background: linear-gradient(135deg, var(--bright-blue), #1D4ED8);
}

.activity-icon.promotion-activity {
    background: linear-gradient(135deg, #F59E0B, #D97706);
}

.activity-icon.security-activity {
    background: linear-gradient(135deg, #EF4444, #DC2626);
}

.activity-meta {
    flex: 1;
    min-width: 0;
}

.activity-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    line-height: 1.4;
}

.activity-time {
    font-size: 14px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.activity-time i {
    font-size: 12px;
}

.activity-content {
    margin-bottom: var(--spacing-md);
}

.activity-content-header {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.activity-content-text {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 15px;
}

.activity-details {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.activity-tag {
    background: rgba(79, 70, 229, 0.1);
    color: var(--gradient-start);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
    border: 1px solid rgba(79, 70, 229, 0.2);
}

.activity-amount {
    background: rgba(16, 185, 129, 0.1);
    color: var(--neon-green);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.activity-exchange {
    background: rgba(37, 99, 235, 0.1);
    color: var(--bright-blue);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
    border: 1px solid rgba(37, 99, 235, 0.2);
}

.activity-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(79, 70, 229, 0.1);
}

.activity-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 14px;
    font-weight: 500;
}

/* 英文状态颜色 */
.activity-status.completed {
    color: var(--neon-green);
}

.activity-status.pending {
    color: #F59E0B;
}

.activity-status.failed {
    color: #EF4444;
}

/* 中文状态颜色 */
.activity-status.进行中 {
    color: #10B981;
}

.activity-status.待开始 {
    color: #F59E0B;
}

.activity-status.已结束 {
    color: #6B7280;
}

/* 通用状态图标样式 */
.activity-status i {
    font-size: 12px;
}

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

.activity-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
    text-decoration: none;
    transition: var(--theme-transition);
    border: 1px solid transparent;
}

.activity-btn.primary {
    background: var(--gradient-start);
    color: var(--text-white);
}

.activity-btn.primary:hover {
    background: var(--gradient-end);
    transform: translateY(-1px);
}

.activity-btn.secondary {
    background: transparent;
    color: var(--gradient-start);
    border-color: var(--gradient-start);
}

.activity-btn.secondary:hover {
    background: var(--gradient-start);
    color: var(--text-white);
}

/* 移动端适配 */
@media (max-width: 768px) {
    .activities-list {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        margin-top: var(--spacing-lg);
    }
    
    .activity-item {
        padding: var(--spacing-md);
    }
    
    .activity-header {
        gap: var(--spacing-sm);
    }
    
    .activity-icon {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    
    .activity-title {
        font-size: 15px;
    }
    
    .activity-footer {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: flex-start;
    }
    
    .activity-actions {
        width: 100%;
        justify-content: flex-end;
    }
}

/* 深色主题适配 */
@media (prefers-color-scheme: dark) {
    .latest-activities {
        background: #1E293B;
    }
    
    .activity-item {
        background: #334155;
        border-color: rgba(79, 70, 229, 0.2);
    }
    
    .activity-title {
        color: var(--text-white);
    }
    
    .activity-content-header {
        color: var(--text-white);
    }
    
    .activity-content-text {
        color: #CBD5E1;
    }
    
    .activity-footer {
        border-color: rgba(79, 70, 229, 0.2);
    }
}

/* ===== 活动弹窗样式 ===== */
.activity-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.activity-modal.show {
    opacity: 1;
    visibility: visible;
}

.activity-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
}

.activity-modal-content {
    position: relative;
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
    transform: scale(0.9) translateY(20px);
    transition: all 0.3s ease;
}

.activity-modal.show .activity-modal-content {
    transform: scale(1) translateY(0);
}

.activity-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid rgba(79, 70, 229, 0.1);
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: var(--text-white);
}

.activity-modal-title {
    font-size: 18px;
    font-weight: 600;
    margin: 0;
    flex: 1;
}

.activity-modal-close {
    background: none;
    border: none;
    color: var(--text-white);
    font-size: 20px;
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: var(--theme-transition);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
}

.activity-modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.activity-modal-body {
    padding: var(--spacing-lg);
    max-height: 60vh;
    overflow-y: auto;
}

.activity-modal-content-text {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    font-size: 15px;
}

.activity-modal-reward {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(16, 185, 129, 0.1);
    color: var(--neon-green);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid rgba(16, 185, 129, 0.2);
    margin-bottom: var(--spacing-lg);
    font-weight: 600;
}

.activity-modal-reward i {
    font-size: 18px;
}

.activity-modal-link {
    margin-bottom: var(--spacing-lg);
}

.activity-modal-link label {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 14px;
}

.activity-modal-url {
    display: block;
    color: var(--bright-blue);
    text-decoration: none;
    word-break: break-all;
    padding: var(--spacing-sm);
    background: rgba(37, 99, 235, 0.1);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(37, 99, 235, 0.2);
    transition: var(--theme-transition);
}

.activity-modal-url:hover {
    background: rgba(37, 99, 235, 0.2);
    text-decoration: underline;
}

.activity-modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid rgba(79, 70, 229, 0.1);
    background: var(--bg-secondary);
}

.activity-modal-register-btn {
    width: 100%;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: var(--text-white);
    border: none;
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--theme-transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

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

.activity-modal-register-btn:active {
    transform: translateY(0);
}

/* 移动端弹窗适配 */
@media (max-width: 768px) {
    .activity-modal-content {
        width: 95%;
        max-height: 85vh;
    }
    
    .activity-modal-header {
        padding: var(--spacing-md);
    }
    
    .activity-modal-title {
        font-size: 16px;
    }
    
    .activity-modal-body {
        padding: var(--spacing-md);
    }
    
    .activity-modal-footer {
        padding: var(--spacing-md);
    }
    
    .activity-modal-register-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 15px;
    }
}

/* 深色主题弹窗适配 */
@media (prefers-color-scheme: dark) {
    .activity-modal-content {
        background: #334155;
    }
    
    .activity-modal-body {
        background: #334155;
    }
    
    .activity-modal-content-text {
        color: #CBD5E1;
    }
    
    .activity-modal-link label {
        color: var(--text-white);
    }
    
    .activity-modal-footer {
        background: #1E293B;
        border-color: rgba(79, 70, 229, 0.2);
    }
}