/* Betso88 - Main Stylesheet */
/* ========== Reset and Base Styles ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 品牌色彩 */
    --primary-color: #1a5f3f;
    --secondary-color: #ffd700;
    --text-color: #333;
    --bg-color: #f5f5f5;
    --header-bg: #ffffff;
    --footer-bg: #2c3e50;
    --link-color: #1a5f3f;
    --link-hover: #ffd700;
    --border-color: #e0e0e0;
    
    /* 阴影系统 */
    --shadow: 0 2px 8px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.15);
    --shadow-xl: 0 12px 32px rgba(0,0,0,0.18);
    
    /* 过渡动画 */
    --transition: all 0.3s ease;
    --transition-fast: all 0.2s ease;
    --transition-slow: all 0.5s ease;
    
    /* 布局系统 - 容器宽度 */
    --container-max-width: 1200px;
    --container-padding: 20px;
    --container-padding-mobile: 15px;
    
    /* 布局系统 - 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* 布局系统 - 断点 */
    --breakpoint-sm: 480px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1200px;
    
    /* 布局系统 - 网格间距 */
    --grid-gap-sm: 1rem;
    --grid-gap-md: 1.5rem;
    --grid-gap-lg: 2rem;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

/* ========== 统一布局系统 ========== */

/* 容器系统 */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    width: 100%;
}

.container-fluid {
    width: 100%;
    padding: 0 var(--container-padding);
}

/* 网格系统 */
.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 calc(-1 * var(--grid-gap-md) / 2);
}

.col {
    flex: 1;
    padding: 0 calc(var(--grid-gap-md) / 2);
}

/* 网格列系统 */
.grid {
    display: grid;
    gap: var(--grid-gap-md);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

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

.grid-auto {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ========== 页面布局结构（统一全站） ========== */
.page-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    width: 100%;
}

.page-header {
    flex-shrink: 0;
    width: 100%;
}

.page-main {
    flex: 1;
    width: 100%;
}

.page-footer {
    flex-shrink: 0;
    margin-top: auto;
    width: 100%;
}

/* ========== 内容区域统一间距 ========== */
.content-section {
    padding: var(--spacing-xxl) 0;
}

.content-section-sm {
    padding: var(--spacing-xl) 0;
}

.content-section-lg {
    padding: 5rem 0;
}

/* Header 样式 */
header {
    background: var(--header-bg);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 50px;
    width: auto;
    display: block;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-left: 10px;
}

/* Logo图片样式（优先使用图片） */
.logo-image {
    height: 50px;
    width: auto;
    display: block;
    object-fit: contain;
}

/* 导航菜单 */
nav {
    display: flex;
    align-items: center;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 0.5rem 0;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-color);
    transition: var(--transition);
}

/* 注册按钮 */
.register-btn {
    background: var(--primary-color);
    color: white;
    padding: 0.6rem 1.5rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    position: relative;
}

.register-btn:hover {
    background: #144a32;
    transform: translateY(-2px);
}

.register-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.5rem;
    background: white;
    box-shadow: var(--shadow);
    border-radius: 5px;
    min-width: 200px;
    display: none;
    flex-direction: column;
    padding: 0.5rem 0;
}

.register-btn.show .register-dropdown {
    display: flex;
}

.register-dropdown a {
    padding: 0.75rem 1.5rem;
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
}

.register-dropdown a:hover {
    background: var(--bg-color);
    color: var(--primary-color);
}

/* ========== Hero Section: 轮播图 + 登录框叠加 ========== */
.hero-section {
    position: relative;
    width: 100%;
    height: 700px;
    overflow: hidden;
    margin-bottom: 0;
}

/* 轮播图容器 */
.hero-carousel {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.8s ease-in-out;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.carousel-slide.active {
    opacity: 1;
    z-index: 1;
}

.slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(0,0,0,0.4), rgba(0,0,0,0.2));
    z-index: 2;
}

/* 轮播控制按钮 */
.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.9);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 2rem;
    color: var(--primary-color);
    cursor: pointer;
    z-index: 10;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
}

.carousel-btn:hover {
    background: white;
    transform: translateY(-50%) scale(1.1);
}

.carousel-prev {
    left: 20px;
}

.carousel-next {
    right: 20px;
}

/* 轮播指示器 */
.carousel-indicators {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: var(--transition);
}

.indicator.active {
    background: white;
    width: 30px;
    border-radius: 6px;
}

/* 登录/注册浮层框 */
.hero-login-overlay {
    position: absolute;
    top: 50%;
    right: 10%;
    transform: translateY(-50%);
    z-index: 100;
    width: 400px;
}

.login-overlay-box {
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    padding: 2rem;
}

.login-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 1.5rem;
    border-bottom: 2px solid var(--border-color);
}

.tab-btn {
    flex: 1;
    padding: 0.75rem 1rem;
    background: none;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-color);
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

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

.form-group label {
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26,95,63,0.1);
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

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

.forgot-link:hover {
    text-decoration: underline;
}

.submit-btn {
    background: var(--primary-color);
    color: white;
    padding: 0.875rem;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 0.5rem;
}

.submit-btn:hover {
    background: #144a32;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* ========== 登录页面样式 ========== */
.login-box {
    background: white;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    margin: 0 auto;
}

.login-box h2 {
    color: var(--primary-color);
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.login-box form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.login-box label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

.login-box input[type="text"],
.login-box input[type="password"] {
    width: 100%;
    padding: 0.875rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
    box-sizing: border-box;
}

.login-box input[type="text"]:focus,
.login-box input[type="password"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26,95,63,0.1);
}

.login-box .form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 0.5rem 0;
}

.login-box .form-options label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    margin: 0;
    font-weight: normal;
}

.login-box .form-options input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.login-box .forgot-link {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.login-box .forgot-link:hover {
    text-decoration: underline;
}

.login-btn {
    background: var(--primary-color);
    color: white;
    padding: 1rem;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 1rem;
    width: 100%;
}

.login-btn:hover {
    background: #144a32;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.login-box .register-link {
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.login-box .register-link a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.login-box .register-link a:hover {
    text-decoration: underline;
}

/* ========== 优势卡片网格 ========== */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--grid-gap-md);
    margin-top: var(--spacing-lg);
}

.benefit-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

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

.benefit-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.benefit-desc {
    color: var(--text-color);
    line-height: 1.7;
    margin: 0;
}

/* ========== 页面横幅样式 ========== */
.page-banner {
    background: linear-gradient(135deg, var(--primary-color) 0%, #144a32 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
    margin-bottom: 0;
    position: relative;
    overflow: hidden;
}

.page-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 215, 0, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(255, 215, 0, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

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

.banner-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.banner-subtitle {
    font-size: 1.3rem;
    opacity: 0.95;
    max-width: 800px;
    margin: 0 auto;
}

/* ========== 游戏展示区域 ========== */
.games-showcase {
    background: var(--bg-color);
    padding: var(--spacing-xxl) 0;
}

.games-showcase .section-header {
    margin-bottom: var(--spacing-xl);
}

/* ========== 游戏卡片增强样式 ========== */
.game-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
}

.game-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

/* Games页面游戏列表 - 竖向 */
.games-showcase .game-card img {
    width: 100%;
    height: 520px;
    object-fit: cover;
    display: block;
}

.game-card-content {
    padding: var(--spacing-md);
}

.game-card-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.play-btn {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    width: 100%;
    text-align: center;
}

.play-btn:hover {
    background: #144a32;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* ========== 优惠活动卡片样式 ========== */
.promo-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
}

.promo-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.promo-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.promo-card-content {
    padding: var(--spacing-md);
}

.promo-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: var(--secondary-color);
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 700;
    z-index: 2;
}

/* ========== 主要内容区域 ========== */
main {
    padding: 0;
}

.home-section {
    padding: 4rem 0;
    margin-bottom: 0;
}

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

.section-title {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: 700;
}

.section-subtitle {
    font-size: 1.1rem;
    color: #666;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

/* 统一内容区块样式 */
.section-content {
    background: white;
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-top: var(--spacing-md);
}

.section-content p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
    color: var(--text-color);
}

.section-content p:last-child {
    margin-bottom: 0;
}

.section-content h2,
.section-content h3 {
    color: var(--primary-color);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.section-content h2 {
    font-size: 1.8rem;
}

.section-content h3 {
    font-size: 1.5rem;
}

.section-content ul,
.section-content ol {
    padding-left: 2rem;
    margin-bottom: var(--spacing-md);
    line-height: 2;
}

.section-content li {
    margin-bottom: var(--spacing-xs);
}

.section-content a {
    color: var(--link-color);
    text-decoration: none;
    transition: var(--transition);
}

.section-content a:hover {
    color: var(--link-hover);
    text-decoration: underline;
}

/* 功能卡片网格 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

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

.feature-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.feature-card h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.feature-card p {
    color: #666;
    line-height: 1.8;
}

/* ========== 游戏轮播 Carousel ========== */
.games-carousel-section {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: 4rem 0;
}

.games-carousel-container {
    position: relative;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 60px;
}

.games-carousel-wrapper {
    overflow: hidden;
    position: relative;
}

.games-carousel-track {
    display: flex;
    transition: transform 0.5s ease;
    gap: 1.5rem;
}

.game-card {
    flex: 0 0 calc(25% - 1.125rem);
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.game-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

/* Home页面游戏卡片 - 正方形 1:1, 300×300px */
.games-carousel-section .game-image {
    width: 100%;
    height: 300px;
    overflow: hidden;
}

.games-carousel-section .game-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.games-carousel-section .game-card:hover .game-image img {
    transform: scale(1.1);
}

.game-card-content {
    padding: 1.5rem;
}

.game-card-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.play-btn {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    width: 100%;
    text-align: center;
}

.play-btn:hover {
    background: #144a32;
    transform: translateY(-2px);
}

.carousel-nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 2rem;
    color: var(--primary-color);
    cursor: pointer;
    z-index: 10;
    transition: var(--transition);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-nav-btn:hover:not(:disabled) {
    background: var(--primary-color);
    color: white;
    transform: translateY(-50%) scale(1.1);
}

.carousel-nav-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.prev-btn {
    left: 0;
}

.next-btn {
    right: 0;
}

/* 游戏类型介绍 */
.game-types-grid {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.game-type-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    background: white;
    padding: 3rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.game-type-card.reverse {
    direction: rtl;
}

.game-type-card.reverse > * {
    direction: ltr;
}

.type-image {
    width: 100%;
    height: 300px;
    border-radius: 8px;
    overflow: hidden;
}

.type-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.type-content h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.type-content p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.type-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

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

/* 优惠活动 */
.promotions-section {
    background: #f8f9fa;
}

.promotions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.promo-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
}

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

.promo-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--secondary-color);
    color: var(--text-color);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    z-index: 5;
}

.promo-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.promo-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.promo-content {
    padding: 1.5rem;
}

.promo-content h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.promo-content p {
    color: #666;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.promo-btn {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.promo-btn:hover {
    background: #144a32;
}

/* ========== VIP 会员模块（重构：卡片化、权益化、强视觉） ========== */
.vip-section {
    background: linear-gradient(135deg, #0d3d26 0%, var(--primary-color) 50%, #144a32 100%);
    color: white;
    padding: var(--spacing-xxl) 0;
    position: relative;
    overflow: hidden;
}

.vip-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 215, 0, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(255, 215, 0, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.vip-section .container {
    position: relative;
    z-index: 1;
}

/* VIP 标题区域 */
.vip-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.vip-header h2 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.vip-header .vip-badge {
    display: inline-block;
    background: var(--secondary-color);
    color: var(--primary-color);
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-lg);
}

.vip-header p {
    font-size: 1.3rem;
    opacity: 0.95;
    max-width: 700px;
    margin: 0 auto;
}

/* VIP 权益卡片网格 */
.vip-benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--grid-gap-lg);
    margin-bottom: var(--spacing-xl);
}

.vip-benefit-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    padding: var(--spacing-lg);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.vip-benefit-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary-color), transparent);
    transform: scaleX(0);
    transition: var(--transition);
}

.vip-benefit-card:hover {
    transform: translateY(-8px);
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--secondary-color);
    box-shadow: var(--shadow-xl);
}

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

.vip-benefit-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    background: rgba(255, 215, 0, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px solid var(--secondary-color);
    transition: var(--transition);
}

.vip-benefit-card:hover .vip-benefit-icon {
    transform: scale(1.1) rotate(5deg);
    background: rgba(255, 215, 0, 0.3);
}

.vip-benefit-icon img {
    width: 50px;
    height: 50px;
    object-fit: contain;
}

.vip-benefit-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--secondary-color);
    text-align: center;
}

.vip-benefit-desc {
    font-size: 1rem;
    line-height: 1.7;
    opacity: 0.9;
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.vip-benefit-highlight {
    display: inline-block;
    background: rgba(255, 215, 0, 0.2);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-weight: 600;
    color: var(--secondary-color);
}

/* VIP CTA 区域 */
.vip-cta {
    text-align: center;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 2px solid rgba(255, 255, 255, 0.2);
}

.vip-cta-text {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
}

.vip-btn {
    display: inline-block;
    background: var(--secondary-color);
    color: var(--primary-color);
    padding: 1.2rem 3rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

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

.vip-btn:hover {
    background: #ffed4e;
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-xl);
}

.vip-btn:hover::before {
    width: 300px;
    height: 300px;
}

.vip-btn span {
    position: relative;
    z-index: 1;
}

/* 下载区域 */
.download-section {
    background: white;
}

.download-banner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 3rem;
    border-radius: 12px;
    color: white;
}

.download-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.download-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.download-buttons {
    display: flex;
    gap: 1rem;
}

.download-btn {
    padding: 1rem 2rem;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    background: white;
    color: var(--primary-color);
}

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

.download-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
}

/* 统计数据 */
.stats-section {
    background: var(--primary-color);
    color: white;
    padding: 3rem 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* 游戏供应商 */
.providers-section {
    background: #f8f9fa;
}

.providers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
}

.provider-item {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
    font-weight: 600;
    color: var(--primary-color);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.provider-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* Footer */
footer {
    background: var(--footer-bg);
    color: white;
    padding: 3rem 0 1rem;
    margin-top: 0;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

.footer-section p,
.footer-section a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    line-height: 1.8;
}

.footer-section a:hover {
    color: var(--secondary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.6);
}

/* ========== 响应式设计 ========== */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--container-padding);
    }
    
    .hero-login-overlay {
        right: 5%;
        width: 350px;
    }
    
    .game-card {
        flex: 0 0 calc(33.333% - 1rem);
    }
    
    .game-type-card {
        grid-template-columns: 1fr;
    }
    
    .vip-banner,
    .download-banner {
        grid-template-columns: 1fr;
    }
    
    .vip-benefits-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: var(--grid-gap-md);
    }
    
    .content-section {
        padding: var(--spacing-xl) 0;
    }
    
    .content-section-lg {
        padding: 4rem 0;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--container-padding-mobile);
    }
    
    .menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 2rem;
        box-shadow: var(--shadow);
        transition: var(--transition);
        z-index: 999;
    }

    .nav-menu.active {
        left: 0;
    }

    .header-content {
        flex-wrap: wrap;
    }
    
    .logo-image {
        height: 40px;
    }
    
    /* 页面横幅移动端 */
    .page-banner {
        padding: 3rem 0;
    }
    
    .banner-title {
        font-size: 2rem;
    }
    
    .banner-subtitle {
        font-size: 1.1rem;
    }
    
    /* 内容区域移动端调整 */
    .content-section {
        padding: var(--spacing-lg) 0;
    }
    
    .content-section-sm {
        padding: var(--spacing-md) 0;
    }
    
    .content-section-lg {
        padding: 3rem 0;
    }
    
    .section-content {
        padding: var(--spacing-md);
    }
    
    .section-header {
        margin-bottom: var(--spacing-lg);
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    /* VIP模块移动端 */
    .vip-header h2 {
        font-size: 2rem;
    }
    
    .vip-benefits-grid {
        grid-template-columns: 1fr;
        gap: var(--grid-gap-md);
    }
    
    .vip-benefit-card {
        padding: var(--spacing-md);
    }
    
    /* 登录框移动端 */
    .login-box {
        padding: 2rem 1.5rem;
    }
    
    /* 优势卡片移动端 */
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    /* 游戏网格移动端 */
    .games-grid {
        grid-template-columns: 1fr;
    }
    
    /* Hero Section 移动端 */
    .hero-section {
        height: 500px;
    }
    
    .hero-login-overlay {
        position: static;
        transform: none;
        width: 100%;
        max-width: 400px;
        margin: -100px auto 0;
        padding: 0 20px;
    }
    
    .carousel-btn {
        width: 40px;
        height: 40px;
        font-size: 1.5rem;
    }
    
    .carousel-prev {
        left: 10px;
    }
    
    .carousel-next {
        right: 10px;
    }
    
    /* 游戏轮播移动端 */
    .games-carousel-container {
        padding: 0 50px;
    }
    
    /* Home页面游戏卡片移动端 */
    .games-carousel-section .game-card {
        flex: 0 0 calc(50% - 0.75rem);
    }
    
    .games-carousel-section .game-image {
        height: 250px;
    }
    
    /* Games页面游戏列表移动端 */
    .games-showcase .game-card img {
        height: 400px;
    }
    
    .carousel-nav-btn {
        width: 40px;
        height: 40px;
        font-size: 1.5rem;
    }

    .section-title {
        font-size: 1.8rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .promotions-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--container-padding-mobile);
    }

    .logo-text {
        font-size: 1.2rem;
    }
    
    .hero-section {
        height: 400px;
    }
    
    .hero-login-overlay {
        margin-top: -80px;
    }
    
    .login-overlay-box {
        padding: 1.5rem;
    }
    
    .games-carousel-container {
        padding: 0 40px;
    }
    
    /* Home页面游戏卡片小屏移动端 */
    .games-carousel-section .game-card {
        flex: 0 0 calc(100% - 0.5rem);
    }
    
    .games-carousel-section .game-image {
        height: 200px;
    }
    
    /* Games页面游戏列表小屏移动端 */
    .games-showcase .game-card img {
        height: 350px;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .section-subtitle {
        font-size: 0.95rem;
    }
    
    .vip-header h2 {
        font-size: 1.8rem;
    }
    
    .vip-header p {
        font-size: 1rem;
    }
    
    .download-content h2 {
        font-size: 1.8rem;
    }
    
    .download-buttons {
        flex-direction: column;
    }
    
    .games-grid {
        grid-template-columns: 1fr;
        gap: var(--grid-gap-sm);
    }
    
    .section-content {
        padding: var(--spacing-sm);
    }
}

/* 工具类 */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }