/* 全局样式重置和基础设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 根元素变量定义 */
:root {
    /* 主色调 */
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #f59e0b;
    --accent-color: #10b981;
    
    /* 中性色 */
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-dark: #111827;
    
    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    
    /* 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: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
}

/* 基础样式 */
html {
    scroll-behavior: smooth;
    /* 优化滚动性能 */
    -webkit-overflow-scrolling: touch;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    /* 优化移动端滚动 */
    -webkit-overflow-scrolling: touch;
    /* 防止iOS橡皮筋效果影响 */
    overscroll-behavior: none;
}

/* 容器样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo-icon {
    width: 32px;
    height: 32px;
    object-fit: contain;
    border-radius: 6px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

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

/* 限时福利导航项特殊样式 */
.nav-link[href="#welfare"] {
    background: linear-gradient(45deg, #ffc107, #ff8c00);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
    animation: giftGlow 2s ease-in-out infinite alternate;
}

.nav-link[href="#welfare"]:hover {
    background: linear-gradient(45deg, #ff8c00, #ffc107);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@keyframes giftGlow {
    0% {
        filter: drop-shadow(0 0 2px rgba(255, 193, 7, 0.3));
    }
    100% {
        filter: drop-shadow(0 0 8px rgba(255, 193, 7, 0.6));
    }
}

/* 汉堡菜单 */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: 0.3s;
}

/* 主页英雄区域 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-primary);
    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="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    color: white;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

.highlight {
    background: linear-gradient(45deg, #fbbf24, #f59e0b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

.hero-features {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
}

.feature-item i {
    font-size: 1.2rem;
    color: var(--secondary-color);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    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(--secondary-color);
    color: white;
}

.btn-primary:hover {
    background: #d97706;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.1rem;
}

.hero-info {
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
}

.hero-info p {
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
}



/* 手机容器样式 */
.phone-container {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-lg);
}

.phone-frame {
    position: relative;
    width: 280px;
    height: 560px;
    background: linear-gradient(145deg, #2a2a2a, #1a1a1a);
    border-radius: 30px;
    padding: 8px;
    box-shadow: 
        0 0 0 2px #333,
        0 20px 40px rgba(0, 0, 0, 0.4),
        inset 0 2px 4px rgba(255, 255, 255, 0.1);
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    transition: transform 0.3s ease;
}

.phone-frame:hover {
    transform: perspective(1000px) rotateY(-2deg) rotateX(2deg) scale(1.02);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: #000;
    border-radius: 22px;
    overflow: hidden;
    position: relative;
}

.app-screenshot {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 22px;
    transition: transform 0.3s ease;
}

.phone-frame:hover .app-screenshot {
    transform: scale(1.05);
}

/* 手机顶部刘海 */
.phone-frame::before {
    content: '';
    position: absolute;
    top: 15px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 25px;
    background: #000;
    border-radius: 0 0 15px 15px;
    z-index: 10;
}

/* 手机底部Home指示器 */
.phone-frame::after {
    content: '';
    position: absolute;
    bottom: 15px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
    z-index: 10;
}

/* 关于我们区域 */
.about {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-secondary);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-2xl);
    color: var(--text-primary);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.about-text h3 {
    font-size: 1.8rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.about-text p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

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

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

.feature-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.feature-content h4 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.feature-content p {
    color: var(--text-secondary);
    margin-bottom: 0;
}

/* 统计网格 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-lg);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

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

/* 功能介绍区域 */
.features {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    text-align: center;
    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);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

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

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

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 角色体系区域 */
.roles {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-secondary);
}

.roles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.role-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.role-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    transition: all 0.3s ease;
}

.role-card.vip::before {
    background: linear-gradient(45deg, #fbbf24, #f59e0b);
}

.role-card.partner::before {
    background: linear-gradient(45deg, #8b5cf6, #6366f1);
}

.role-card.president::before {
    background: linear-gradient(45deg, #ef4444, #dc2626);
}

.role-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.role-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

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

.role-header h3 {
    font-size: 1.8rem;
    color: var(--text-primary);
}

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

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

.benefit-item i {
    color: var(--accent-color);
    font-size: 1.1rem;
}

.benefit-item span {
    color: var(--text-primary);
    font-weight: 500;
}



/* 联系我们区域已删除 */

/* 限时注册福利模块 */
.welfare {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.welfare::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="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.welfare-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

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

.welfare-icon {
    font-size: 3rem;
    animation: giftBounce 2s infinite;
}

@keyframes giftBounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-15px);
    }
    60% {
        transform: translateY(-7px);
    }
}

.welfare-title h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    color: #ffc107;
    text-shadow: 0 0 15px rgba(255, 193, 7, 0.6);
}

.welfare-title p {
    font-size: 1.2rem;
    opacity: 0.9;
    margin: 0;
}

/* 倒计时区域 */
.welfare-countdown {
    margin-bottom: var(--spacing-xl);
}

.welfare-countdown .countdown-label {
    color: white;
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
    font-weight: 500;
}

.welfare-countdown .countdown-timer {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
}

.welfare-countdown .countdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    min-width: 80px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.welfare-countdown .countdown-number {
    font-size: 2rem;
    font-weight: 800;
    color: #ffc107;
    text-shadow: 0 0 10px rgba(255, 193, 7, 0.5);
    line-height: 1;
}

.welfare-countdown .countdown-item .countdown-label {
    font-size: 0.9rem;
    margin-bottom: 0;
    margin-top: var(--spacing-sm);
    color: white;
}

.welfare-countdown .countdown-separator {
    color: #ffc107;
    font-size: 2rem;
    font-weight: 800;
    animation: blink 1s infinite;
    margin: 0 var(--spacing-sm);
}

@keyframes blink {
    0%, 50% {
        opacity: 1;
    }
    51%, 100% {
        opacity: 0.3;
    }
}

/* 福利权益 */
.welfare-benefits {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.welfare-benefits .benefit-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform 0.3s ease;
}

.welfare-benefits .benefit-item:hover {
    transform: translateY(-5px);
}

.welfare-benefits .benefit-item i {
    color: #ffc107;
    font-size: 1.5rem;
}

.welfare-benefits .benefit-item span {
    color: white;
    font-weight: 600;
    font-size: 1rem;
}

/* 行动按钮 */
.welfare-action {
    margin-top: var(--spacing-xl);
}

.btn-welfare {
    background: linear-gradient(45deg, #ffc107, #ff8c00);
    color: white;
    border: none;
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: 1.3rem;
    font-weight: 700;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    box-shadow: 0 6px 20px rgba(255, 193, 7, 0.4);
    min-width: 250px;
}

.btn-welfare:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 193, 7, 0.6);
}

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

/* 紧急状态样式 */
.welfare-countdown.urgent .countdown-number {
    color: #ff4444;
    text-shadow: 0 0 15px rgba(255, 68, 68, 0.8);
    animation: urgentPulse 0.5s infinite;
}

@keyframes urgentPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

.welfare-countdown.urgent .countdown-separator {
    color: #ff4444;
    animation: urgentBlink 0.5s infinite;
}

@keyframes urgentBlink {
    0%, 50% {
        opacity: 1;
    }
    51%, 100% {
        opacity: 0.5;
    }
}

/* 轮播信息 */
.notification-ticker {
    position: fixed;
    bottom: 100px;
    right: 20px;
    width: 300px;
    max-height: 200px;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 999;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.ticker-container {
    padding: var(--spacing-sm);
    height: 100%;
    overflow: hidden;
}

.ticker-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    animation: tickerScroll 40s linear infinite;
}

.notification-ticker:hover .ticker-content {
    animation-play-state: paused;
}

@keyframes tickerScroll {
    0% {
        transform: translateY(0);
    }
    100% {
        transform: translateY(-100%);
    }
}

.ticker-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    color: white;
    border-left: 3px solid #ffc107;
}

.ticker-item .user-name {
    color: #ffc107;
    font-weight: 600;
}

.ticker-item .achievement {
    color: #10b981;
    font-weight: 500;
}

.ticker-item .time {
    color: #9ca3af;
    font-size: 0.75rem;
}



/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* 返回樵渔匹主站按钮 */
.back-to-main {
    position: fixed;
    bottom: 100px;
    left: 30px;
    background: linear-gradient(45deg, #ff6b35, #f7931e);
    border: none;
    border-radius: 25px;
    color: white;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.4);
    transition: all 0.3s ease;
    z-index: 1000;
    animation: mainButtonPulse 2s ease-in-out infinite;
}

.back-to-main:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.6);
    background: linear-gradient(45deg, #f7931e, #ff6b35);
}

.back-to-main .button-text {
    white-space: nowrap;
}

@keyframes mainButtonPulse {
    0%, 100% {
        box-shadow: 0 4px 15px rgba(255, 107, 53, 0.4);
    }
    50% {
        box-shadow: 0 4px 20px rgba(255, 107, 53, 0.7);
    }
}

/* 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, 0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: white;
    margin: 10% auto;
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 400px;
    text-align: center;
    position: relative;
    animation: modalSlideIn 0.3s ease;
}

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

.close {
    position: absolute;
    right: var(--spacing-md);
    top: var(--spacing-md);
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

.close:hover {
    color: var(--text-primary);
}

.qr-code-modal {
    margin: var(--spacing-lg) 0;
    text-align: center;
}

.qr-code-image {
    width: 200px;
    height: 200px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-md);
    transition: transform 0.3s ease;
}

.qr-code-image:hover {
    transform: scale(1.05);
}

/* 响应式设计 */
@media (max-width: 768px) {
    /* 移动端滚动优化 */
    body {
        /* 确保移动端滚动流畅 */
        -webkit-overflow-scrolling: touch;
        /* 防止双击缩放 */
        touch-action: manipulation;
    }
    
    /* 导航栏响应式 */
    .hamburger {
        display: flex;
    }
    
    .logo-icon {
        width: 28px;
        height: 28px;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-lg);
        padding: var(--spacing-lg) 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    /* 限时福利导航项移动端样式 */
    .nav-link[href="#welfare"] {
        background: linear-gradient(45deg, #ffc107, #ff8c00);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        font-weight: 600;
    }
    
    /* 英雄区域响应式 */
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-lg);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-features {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    /* 关于我们响应式 */
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    

    
    
    

    
    /* 按钮响应式 */
    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.9rem;
    }
    
    .btn-large {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: 1rem;
    }
    
    /* 限时注册福利响应式 */
    .welfare-header {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .welfare-title h2 {
        font-size: 2rem;
    }
    
    .welfare-title p {
        font-size: 1rem;
    }
    
    .welfare-countdown .countdown-timer {
        gap: var(--spacing-sm);
    }
    
    .welfare-countdown .countdown-item {
        min-width: 60px;
        padding: var(--spacing-md);
    }
    
    .welfare-countdown .countdown-number {
        font-size: 1.5rem;
    }
    
    .welfare-countdown .countdown-item .countdown-label {
        font-size: 0.7rem;
    }
    
    .welfare-benefits {
        gap: var(--spacing-md);
    }
    
    .welfare-benefits .benefit-item {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    /* 手机样式响应式 */
    .phone-frame {
        width: 240px;
        height: 480px;
        transform: perspective(800px) rotateY(-3deg) rotateX(3deg);
    }
    
    .phone-frame:hover {
        transform: perspective(800px) rotateY(-1deg) rotateX(1deg) scale(1.01);
    }
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.9rem;
    }
    
    .welfare-benefits .benefit-item i {
        font-size: 1.2rem;
    }
    
    .btn-welfare {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: 1.1rem;
        min-width: 200px;
    }
    
    /* 轮播信息响应式 */
    .notification-ticker {
        width: 280px;
        bottom: 90px;
        right: 15px;
    }
    
    .ticker-item {
        font-size: 0.8rem;
        padding: 6px var(--spacing-xs);
    }
    
    .ticker-item .time {
        font-size: 0.7rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-xs);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .feature-card,
    .role-card {
        padding: var(--spacing-lg);
    }
    
    .modal-content {
        margin: 20% auto;
        padding: var(--spacing-lg);
    }
}

/* 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);
    }
}

/* 滚动动画类 */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* 页脚样式 */
.footer {
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--spacing-xl) 0;
    margin-top: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    text-align: center;
}

.footer .copyright {
    font-size: 0.9rem;
    line-height: 1.6;
    margin: 0;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 400;
}

.footer .copyright a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer .copyright a:hover {
    color: #ffc107;
}

/* 页脚响应式设计 */
@media (max-width: 768px) {
    .footer {
        padding: var(--spacing-lg) 0;
    }
    
    .footer .copyright {
        font-size: 0.8rem;
        padding: 0 var(--spacing-md);
    }
    
    /* 二维码响应式 */
    .qr-code-image {
        width: 180px;
        height: 180px;
    }
    
    /* 返回主站按钮响应式 */
    .back-to-main {
        bottom: 80px;
        left: 20px;
        padding: 10px 16px;
        font-size: 0.8rem;
    }
    
    .back-to-main .button-text {
        display: none;
    }
}

@media (max-width: 480px) {
    .footer .copyright {
        font-size: 0.75rem;
        padding: 0 var(--spacing-sm);
    }
    
    /* 二维码小屏幕响应式 */
    .qr-code-image {
        width: 150px;
        height: 150px;
    }
    
    /* Logo小屏幕响应式 */
    .logo-icon {
        width: 24px;
        height: 24px;
    }
    
    /* 手机样式小屏幕响应式 */
    .phone-frame {
        width: 200px;
        height: 400px;
        transform: none;
    }
    
    .phone-frame:hover {
        transform: scale(1.02);
    }
    
    .phone-container {
        padding: var(--spacing-md);
    }
    
    /* 返回主站按钮小屏幕响应式 */
    .back-to-main {
        bottom: 70px;
        left: 15px;
        padding: 8px 12px;
        font-size: 0.75rem;
    }
}