/* ========================================
   CSS变量 - 主题色彩系统
   ======================================== */
:root {
    /* 主色调 - 基于 Itch.io 官网风格 */
    --primary-color: #ff2449;
    --primary-dark: #e61f3f;
    --primary-light: #ff5573;
    --secondary-color: #fa5c7c;
    --secondary-dark: #e8415a;
    --secondary-light: #ff8ba3;
    
    /* 中性色 - 浅色系 */
    --dark-bg: #ffffff;
    --dark-secondary: #f8f9fa;
    --dark-tertiary: #f0f2f5;
    --text-primary: #1a1a1a;
    --text-secondary: #4a4a4a;
    --text-muted: #767676;
    
    /* 渐变色 */
    --gradient-primary: linear-gradient(135deg, #ff2449 0%, #fa5c7c 100%);
    --gradient-secondary: linear-gradient(135deg, #ff2449 0%, #ff5573 100%);
    --gradient-accent: linear-gradient(135deg, #ff2449 0%, #ff8ba3 100%);
    --gradient-dark: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    
    /* 功能色 */
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #3b82f6;
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
    
    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.4);
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* 字体 */
    --font-primary: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
    --font-english: 'Poppins', sans-serif;
}

/* ========================================
   全局样式
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul {
    list-style: none;
}

/* ========================================
   容器和工具类
   ======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xl) 0;
    position: relative;
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   导航栏
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 1);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.12);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 800;
    font-family: var(--font-english);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    z-index: 2;
}

.logo i {
    font-size: 1.8rem;
    color: var(--primary-color);
    -webkit-text-fill-color: var(--primary-color);
}

/* Logo图片样式 */
.logo-img {
    width: 40px;
    height: 40px;
    object-fit: contain;
    transition: var(--transition-fast);
}

.logo:hover .logo-img {
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.btn-unlock {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--gradient-primary);
    color: white !important;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    box-shadow: 0 4px 12px rgba(255, 36, 73, 0.3);
    transition: all var(--transition-normal);
    white-space: nowrap;
    z-index: 2;
}

.btn-unlock:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 36, 73, 0.4);
    background: var(--gradient-secondary);
}

.btn-unlock i {
    font-size: 1rem;
}

.btn-unlock span {
    font-weight: 600;
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
    transition: var(--transition-fast);
}

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

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

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
    transition: var(--transition-fast);
}

/* ========================================
   英雄区域
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #fff5f7 0%, #ffffff 100%);
    padding-top: 80px;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(255, 36, 73, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(250, 92, 124, 0.08) 0%, transparent 50%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

.hero-title {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: var(--spacing-md);
}

.title-main {
    font-size: 5rem;
    font-weight: 900;
    font-family: var(--font-english);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -2px;
}

.title-sub {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
    text-decoration: none;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transition: var(--transition-normal);
}

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

.btn-primary {
    background: var(--gradient-primary);
    color: white !important;
    box-shadow: 0 4px 16px rgba(250, 92, 124, 0.4);
    text-decoration: none !important;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(250, 92, 124, 0.5);
    color: white !important;
    text-decoration: none !important;
}

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

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

.btn-cta {
    background: var(--gradient-primary);
    color: white !important;
    box-shadow: 0 4px 16px rgba(255, 36, 73, 0.4);
    padding: 1.25rem 2.5rem;
    font-size: 1.125rem;
    text-decoration: none !important;
}

.btn-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(255, 36, 73, 0.5);
    color: white !important;
    text-decoration: none !important;
}

/* 装饰元素 */
.hero-decoration {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    overflow: hidden;
}

.decoration-circle {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(250, 92, 124, 0.1) 0%, transparent 70%);
    animation: float 20s infinite ease-in-out;
}

.circle-1 {
    width: 300px;
    height: 300px;
    top: 10%;
    left: 5%;
    animation-delay: 0s;
}

.circle-2 {
    width: 200px;
    height: 200px;
    top: 60%;
    right: 10%;
    animation-delay: 5s;
}

.circle-3 {
    width: 250px;
    height: 250px;
    bottom: 10%;
    left: 50%;
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) translateX(0);
    }
    33% {
        transform: translateY(-30px) translateX(20px);
    }
    66% {
        transform: translateY(20px) translateX(-20px);
    }
}

/* ========================================
   平台核心理念
   ======================================== */
.philosophy {
    background: #f8f9fa;
}

.philosophy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.philosophy-card {
    background: #ffffff;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition-normal);
    border: 1px solid #e5e7eb;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.philosophy-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 8px 24px rgba(255, 36, 73, 0.15);
}

.card-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-sm);
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-icon i {
    font-size: 2.5rem;
    color: white;
}

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

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

/* ========================================
   游戏类型
   ======================================== */
.game-types {
    background: #ffffff;
}

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

.category-block {
    background: #f8f9fa;
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    border: 1px solid #e5e7eb;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.category-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--primary-color);
}

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

.category-header h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

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

.game-type-card {
    background: #ffffff;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
    border: 1px solid #e5e7eb;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
}

.game-type-card:hover {
    transform: translateY(-3px);
    border-color: var(--primary-color);
    box-shadow: 0 4px 16px rgba(255, 36, 73, 0.12);
}

.game-type-card i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.game-type-card h4 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.game-type-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ========================================
   开发者友好服务
   ======================================== */
.developer-services {
    background: #f8f9fa;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-md);
}

.service-card {
    background: #ffffff;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 1px solid #e5e7eb;
    transition: var(--transition-normal);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.service-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 8px 24px rgba(255, 36, 73, 0.15);
}

.service-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
}

.service-icon i {
    font-size: 2rem;
    color: white;
}

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

.service-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.service-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.service-list i {
    color: var(--primary-color);
    margin-top: 0.25rem;
    font-size: 0.875rem;
    flex-shrink: 0;
}

/* ========================================
   玩家优质体验
   ======================================== */
.player-experience {
    background: #ffffff;
}

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

.experience-card {
    background: #f8f9fa;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition-normal);
    border: 1px solid #e5e7eb;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.experience-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 8px 24px rgba(255, 36, 73, 0.12);
}

.experience-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto var(--spacing-sm);
    background: var(--gradient-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.experience-icon i {
    font-size: 2rem;
    color: white;
}

.experience-card h3 {
    font-size: 1.375rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

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

/* ========================================
   Game Jam活动
   ======================================== */
.game-jam {
    background: #f8f9fa;
}

.jam-container {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

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

.jam-feature {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: #ffffff;
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary-color);
    transition: var(--transition-fast);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.jam-feature:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.jam-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.jam-icon i {
    font-size: 1.75rem;
    color: white;
}

.jam-text h3 {
    font-size: 1.375rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

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

.jam-stats {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    background: #ffffff;
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-md);
    background: #f8f9fa;
    border-radius: var(--radius-lg);
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* ========================================
   多平台支持
   ======================================== */
.platforms {
    background: #ffffff;
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.platform-card {
    background: #f8f9fa;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition-normal);
    border: 1px solid #e5e7eb;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.platform-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 8px 24px rgba(255, 36, 73, 0.12);
}

.platform-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-sm);
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.platform-icon i {
    font-size: 3rem;
    color: white;
}

.platform-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.platform-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ========================================
   平台数据统计
   ======================================== */
.statistics {
    background: #f8f9fa;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.stats-card {
    background: #ffffff;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid #e5e7eb;
    transition: var(--transition-normal);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.stats-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(255, 36, 73, 0.15);
}

.stats-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-sm);
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stats-icon i {
    font-size: 2.5rem;
    color: white;
}

.stats-number {
    font-size: 3rem;
    font-weight: 900;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
    font-family: var(--font-english);
}

.stats-number::after {
    content: '+';
    font-size: 2rem;
}

.stats-label {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

/* ========================================
   平台使命愿景
   ======================================== */
.mission {
    background: #ffffff;
}

.mission-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.mission-text h2 {
    font-size: 2.25rem;
    margin-bottom: var(--spacing-md);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.mission-quote {
    font-size: 1.125rem;
    color: var(--text-primary);
    line-height: 1.8;
    padding: var(--spacing-md);
    background: #f8f9fa;
    border-left: 4px solid var(--primary-color);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    font-style: italic;
}

.mission-text p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
}

.mission-values {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.value-item {
    background: #f8f9fa;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid #e5e7eb;
    transition: var(--transition-normal);
}

.value-item:hover {
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.value-item i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.value-item h3 {
    font-size: 1.125rem;
    color: var(--text-primary);
}

/* ========================================
   最新文章模块
   ======================================== */
.articles {
    background: #ffffff;
}

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

.article-card {
    background: #f8f9fa;
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-normal);
    border: 1px solid #e5e7eb;
    display: flex;
    flex-direction: column;
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(255, 36, 73, 0.12);
    border-color: var(--primary-color);
}

.article-image {
    display: block;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #ff2449 0%, #fa5c7c 100%);
    aspect-ratio: 16/9;
}

.article-image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.article-image-placeholder i {
    font-size: 4rem;
    color: rgba(255, 255, 255, 0.9);
}

.article-image:hover .article-image-placeholder i {
    transform: scale(1.1);
    transition: var(--transition-normal);
}

.article-content {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    flex: 1;
}

.article-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--text-muted);
}

.article-meta span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.article-meta i {
    font-size: 0.75rem;
}

.article-date {
    color: var(--text-muted);
}

.article-category {
    color: var(--primary-color);
    font-weight: 500;
}

.article-title {
    font-size: 1.125rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: var(--spacing-sm);
}

.article-title a {
    color: var(--text-primary);
    transition: var(--transition-fast);
}

.article-title a:hover {
    color: var(--primary-color);
}

.article-excerpt {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
    flex: 1;
}

.article-readmore {
    color: var(--primary-color);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-fast);
}

.article-readmore:hover {
    gap: 0.75rem;
}

.article-readmore i {
    font-size: 0.875rem;
}

/* 文章内页样式 */
.article-hero {
    padding: 8rem 0 4rem;
    background: linear-gradient(135deg, #fff5f7 0%, #ffffff 100%);
    border-bottom: 1px solid #e5e7eb;
}

.article-hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.article-hero-meta {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: var(--spacing-md);
    font-size: 0.95rem;
    color: var(--text-muted);
}

.article-hero-meta span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.article-hero-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
}

.article-hero-excerpt {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.article-body {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
}

.article-body h2 {
    font-size: 1.75rem;
    color: var(--text-primary);
    margin: var(--spacing-lg) 0 var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--primary-color);
}

.article-body h3 {
    font-size: 1.375rem;
    color: var(--text-primary);
    margin: var(--spacing-md) 0 var(--spacing-sm);
}

.article-body p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.article-body ul,
.article-body ol {
    margin: var(--spacing-md) 0;
    padding-left: 2rem;
}

.article-body li {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 0.5rem;
}

.article-body blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: var(--spacing-md);
    margin: var(--spacing-md) 0;
    font-style: italic;
    color: var(--text-secondary);
}

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

.article-body a {
    color: var(--primary-color);
    text-decoration: underline;
}

.article-body a:hover {
    color: var(--primary-dark);
}

.article-tags {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid #e5e7eb;
}

.article-tags h4 {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
}

.tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    padding: 0.375rem 0.75rem;
    background: #f8f9fa;
    border: 1px solid #e5e7eb;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.tag:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* 响应式 - 文章模块 */
@media (max-width: 1024px) {
    .articles-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .articles-grid {
        grid-template-columns: 1fr;
    }
    
    .article-hero-title {
        font-size: 2rem;
    }
    
    .article-body {
        padding: var(--spacing-lg) var(--spacing-sm);
    }
}

/* ========================================
   CTA区域
   ======================================== */
.cta {
    background: var(--gradient-primary);
    padding: var(--spacing-xl) 0;
}

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

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: white;
    margin-bottom: var(--spacing-sm);
}

.cta-content p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-md);
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
}

/* ========================================
   页脚
   ======================================== */
.footer {
    background: #1a1a1a;
    padding: var(--spacing-lg) 0 var(--spacing-md);
    border-top: 1px solid #333;
    color: #e5e7eb;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.footer-section h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: #ffffff;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    font-family: var(--font-english);
    color: var(--primary-color);
}

.footer-logo i {
    font-size: 1.8rem;
}

.footer-description,
.footer-info {
    color: #9ca3af;
    line-height: 1.6;
}

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

.footer-links a {
    color: #9ca3af;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-links a:hover {
    color: var(--primary-color);
    transform: translateX(5px);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid #333;
    color: #6b7280;
}

/* ========================================
   返回顶部按钮
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-lg);
    z-index: 999;
}

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

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

/* ========================================
   响应式设计 - 平板
   ======================================== */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .title-main {
        font-size: 4rem;
    }
    
    .title-sub {
        font-size: 1.75rem;
    }
    
    .jam-container,
    .mission-content {
        grid-template-columns: 1fr;
    }
    
    .category-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    
    /* 平板端页脚显示2列 */
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ========================================
   响应式设计 - 移动端
   ======================================== */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .section {
        padding: var(--spacing-lg) 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    /* 导航栏 */
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: var(--spacing-md);
        gap: 0;
        transition: var(--transition-normal);
        transform: none;
        left: -100%;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-link {
        width: 100%;
        padding: 1rem;
        border-bottom: 1px solid #e5e7eb;
    }
    
    .btn-unlock {
        position: absolute;
        right: 60px;
        padding: 0.6rem 1rem;
        font-size: 0.85rem;
    }
    
    .btn-unlock span {
        display: none;
    }
    
    .btn-unlock i {
        font-size: 1.1rem;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
    
    /* 英雄区域 */
    .title-main {
        font-size: 3rem;
    }
    
    .title-sub {
        font-size: 1.5rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    /* 网格布局 */
    .philosophy-grid,
    .category-grid,
    .services-grid,
    .experience-grid,
    .platforms-grid,
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .mission-values {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 480px) {
    .title-main {
        font-size: 2.5rem;
    }
    
    .title-sub {
        font-size: 1.25rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .cta-content h2 {
        font-size: 2rem;
    }
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* 为卡片添加渐入动画 */
.philosophy-card,
.game-type-card,
.service-card,
.experience-card,
.platform-card,
.stats-card {
    animation: fadeInUp 0.6s ease-out;
}

/* ========================================
   可访问性和性能优化
   ======================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 选中文本样式 */
::selection {
    background: var(--primary-color);
    color: white;
}

::-moz-selection {
    background: var(--primary-color);
    color: white;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f8f9fa;
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* ========================================
   子页面专用样式
   ======================================== */

/* 页面标题区域 */
.page-hero {
    padding: 8rem 0 4rem;
    background: linear-gradient(135deg, #fff5f7 0%, #ffffff 100%);
    border-bottom: 1px solid #e5e7eb;
}

.page-hero-content {
    text-align: center;
}

.page-title {
    font-size: 3rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.page-title i {
    color: var(--primary-color);
}

.page-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

/* 页面内容区域 */
.page-content {
    background: #ffffff;
    padding: var(--spacing-xl) 0;
}

.page-content h2 {
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.page-content h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin: var(--spacing-md) 0 var(--spacing-sm);
}

.page-content p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
}

.page-content ul,
.page-content ol {
    margin: var(--spacing-sm) 0;
    padding-left: 2rem;
}

.page-content li {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 0.5rem;
}

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

.page-content a {
    color: var(--primary-color);
    text-decoration: underline;
}

.page-content a:hover {
    color: var(--primary-dark);
}

/* FAQ 页面样式 */
.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-category {
    margin-bottom: var(--spacing-lg);
}

.faq-category-title {
    font-size: 1.75rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--primary-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.faq-category-title i {
    color: var(--primary-color);
}

.faq-item {
    background: #f8f9fa;
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-sm);
    overflow: hidden;
    border: 1px solid #e5e7eb;
    transition: var(--transition-fast);
}

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

.faq-question {
    padding: var(--spacing-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 1rem;
    user-select: none;
}

.faq-question i {
    color: var(--primary-color);
    transition: var(--transition-fast);
    font-size: 0.875rem;
}

.faq-item.active .faq-question i {
    transform: rotate(90deg);
}

.faq-question h3 {
    margin: 0;
    font-size: 1.125rem;
    color: var(--text-primary);
    font-weight: 600;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    padding: 0 var(--spacing-md);
}

.faq-item.active .faq-answer {
    max-height: 2000px;
    padding: 0 var(--spacing-md) var(--spacing-md);
}

.faq-answer p,
.faq-answer ul,
.faq-answer ol {
    margin-bottom: var(--spacing-sm);
}

/* 页面 CTA */
.page-cta {
    text-align: center;
    padding: var(--spacing-lg);
    background: #f8f9fa;
    border-radius: var(--radius-xl);
    margin-top: var(--spacing-xl);
}

.page-cta h2 {
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.page-cta p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

/* 表单样式 */
.form-container {
    max-width: 600px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #e5e7eb;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: var(--font-primary);
    transition: var(--transition-fast);
    background: #ffffff;
    color: var(--text-primary);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(255, 36, 73, 0.1);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-required {
    color: var(--primary-color);
}

/* 卡片网格 */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.info-card {
    background: #f8f9fa;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 1px solid #e5e7eb;
}

.info-card h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.info-card h3 i {
    color: var(--primary-color);
}

/* 提示框 */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
    border-left: 4px solid;
}

.alert-info {
    background: #eff6ff;
    border-color: #3b82f6;
    color: #1e40af;
}

.alert-warning {
    background: #fffbeb;
    border-color: #f59e0b;
    color: #92400e;
}

.alert-success {
    background: #f0fdf4;
    border-color: #10b981;
    color: #065f46;
}

/* 目录导航 */
.toc {
    background: #f8f9fa;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    border: 1px solid #e5e7eb;
}

.toc h3 {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.toc ul {
    list-style: none;
    padding-left: 0;
}

.toc li {
    margin-bottom: 0.5rem;
}

.toc a {
    color: var(--text-secondary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-fast);
}

.toc a:hover {
    color: var(--primary-color);
    transform: translateX(5px);
}

.toc a i {
    font-size: 0.75rem;
}

/* 响应式 - 子页面 */
@media (max-width: 768px) {
    .page-hero {
        padding: 6rem 0 3rem;
    }
    
    .page-title {
        font-size: 2rem;
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .page-subtitle {
        font-size: 1rem;
    }
    
    .faq-category-title {
        font-size: 1.5rem;
    }
    
    .card-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   标签页面样式
   ======================================== */
.tags-page-content {
    max-width: 1200px;
    margin: 0 auto;
}

.tags-section {
    margin-bottom: var(--spacing-xl);
}

.tags-section-title {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tags-section-title i {
    color: var(--primary-color);
}

/* 标签云 */
.tags-cloud {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
}

.tag-cloud-item {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-lg);
    font-weight: 600;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-fast);
    text-decoration: none;
}

.tag-cloud-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.tag-cloud-item.tag-large {
    font-size: 1.125rem;
    padding: 1.25rem 2rem;
}

.tag-count {
    font-size: 0.875rem;
    opacity: 0.9;
    background: rgba(255, 255, 255, 0.2);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
}

/* 标签网格 */
.tags-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-md);
}

/* 标签卡片 */
.tag-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-fast);
    border: 1px solid #e5e7eb;
}

.tag-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.tag-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid #f0f2f5;
}

.tag-card-header h3 {
    font-size: 1.25rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0;
}

.tag-card-header h3 i {
    color: var(--primary-color);
}

.tag-badge {
    background: var(--gradient-primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
}

.tag-description {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

/* 标签文章列表 */
.tag-articles {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.tag-article-link {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.75rem;
    background: #f8f9fa;
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition-fast);
    border-left: 3px solid transparent;
}

.tag-article-link:hover {
    background: #f0f2f5;
    border-left-color: var(--primary-color);
    transform: translateX(4px);
}

.tag-article-link i {
    color: var(--primary-color);
    margin-top: 2px;
    flex-shrink: 0;
}

/* 响应式 - 标签页面 */
@media (max-width: 768px) {
    .tags-grid {
        grid-template-columns: 1fr;
    }
    
    .tags-cloud {
        flex-direction: column;
    }
    
    .tag-cloud-item {
        justify-content: center;
    }
    
    .tags-section-title {
        font-size: 1.5rem;
    }
}