/* ===================================
   CSS变量定义
   =================================== */
:root {
    /* 主题颜色 */
    --color-primary: #1f1f20;
    --color-secondary-1: #bab1a7;
    --color-secondary-2: #758898;
    --color-secondary-3: #7994a2;
    
    /* 辅助颜色 */
    --color-bg: #fafafa;
    --color-white: #ffffff;
    --color-text: #2c2c2c;
    --color-text-light: #666666;
    --color-border: #e0e0e0;
    
    /* 渐变色 */
    --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary-2) 100%);
    --gradient-hero: linear-gradient(135deg, rgba(31, 31, 32, 0.95) 0%, rgba(117, 136, 152, 0.95) 100%);
    --gradient-card: linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.1));
    
    /* 阴影 */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.16);
    --shadow-xl: 0 12px 32px rgba(0, 0, 0, 0.2);
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 50%;
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* 字体 */
    --font-base: 'Noto Sans SC', sans-serif;
    --font-serif: 'Noto Serif SC', serif;
}

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

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

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

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

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

button {
    font-family: inherit;
    border: none;
    background: none;
    cursor: pointer;
    transition: var(--transition-fast);
}

ul, ol {
    list-style: none;
}

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

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

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
}

.section-title i {
    margin-right: var(--spacing-xs);
    color: var(--color-secondary-3);
}

/* ===================================
   按钮样式
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    text-align: center;
}

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

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

.btn-primary:active {
    transform: translateY(0);
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
    font-weight: 600;
}

/* ===================================
   返回顶部按钮
   =================================== */
#back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--color-white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 1000;
}

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

#back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

/* ===================================
   导航栏
   =================================== */
.navbar {
    position: sticky;
    top: 0;
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    z-index: 999;
    transition: var(--transition-normal);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
}

.logo img {
    width: 32px;
    height: 32px;
}

.menu-toggle {
    display: none;
    font-size: 1.5rem;
    color: var(--color-primary);
}

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

.nav-menu a {
    padding: var(--spacing-xs) var(--spacing-sm);
    color: var(--color-text);
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.nav-menu a:hover {
    color: var(--color-secondary-3);
    background: rgba(121, 148, 162, 0.1);
}

.nav-menu i {
    margin-right: 0.25rem;
    font-size: 0.875rem;
}

/* ===================================
   英雄区
   =================================== */
.hero {
    background: linear-gradient(135deg, rgba(31, 31, 32, 0.9) 0%, rgba(117, 136, 152, 0.85) 100%), 
                url('img/游戏截图1.webp') center center / cover no-repeat;
    color: var(--color-white);
    padding: var(--spacing-xxl) 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.2);
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: var(--spacing-sm);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    margin-bottom: var(--spacing-md);
    opacity: 0.95;
    font-style: italic;
}

.hero-description {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

.hero-info {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.info-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    font-weight: 500;
}

.info-badge i {
    font-size: 1rem;
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
}

.tag {
    padding: 0.375rem 0.875rem;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    font-size: 0.875rem;
    font-weight: 500;
}

/* ===================================
   新闻动态
   =================================== */
.news {
    padding: var(--spacing-xxl) 0;
    background: var(--color-white);
}

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

.news-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border: 1px solid var(--color-border);
}

.news-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.news-date {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-secondary-3);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}

.news-title {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
}

.news-content {
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.news-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-secondary-3);
    font-weight: 600;
    transition: var(--transition-fast);
}

.news-link:hover {
    gap: var(--spacing-sm);
    color: var(--color-secondary-2);
}

/* ===================================
   游戏截图画廊
   =================================== */
.gallery {
    padding: var(--spacing-xxl) 0;
    background: var(--color-bg);
}

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

.gallery-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    aspect-ratio: 16/9;
    cursor: pointer;
    transition: var(--transition-normal);
}

.gallery-item:hover {
    transform: scale(1.03);
    box-shadow: var(--shadow-xl);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(31, 31, 32, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-normal);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-overlay i {
    font-size: 3rem;
    color: var(--color-white);
}

/* ===================================
   用户评价
   =================================== */
.reviews {
    padding: var(--spacing-xxl) 0;
    background: var(--color-white);
}

.review-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

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

.stat-number {
    font-size: 3rem;
    font-weight: 900;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    color: var(--color-text-light);
    font-size: 0.875rem;
}

.stat-label i {
    color: #ffc107;
    font-size: 1rem;
}

.review-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.review-tag {
    padding: 0.5rem 1.25rem;
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-xl);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
    transition: all var(--transition-fast);
}

.review-tag:hover {
    border-color: var(--color-secondary-3);
    background: rgba(121, 148, 162, 0.1);
}

.review-carousel {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    background: var(--color-white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    z-index: 2;
    transition: all var(--transition-fast);
}

.carousel-btn:hover {
    background: var(--color-secondary-3);
    color: var(--color-white);
    transform: translateY(-50%) scale(1.1);
}

.carousel-btn.prev {
    left: -20px;
}

.carousel-btn.next {
    right: -20px;
}

.review-cards {
    position: relative;
    overflow: hidden;
}

.review-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: none;
    animation: fadeIn var(--transition-normal);
}

.review-card.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.review-avatar {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--color-white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.review-author {
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.25rem;
}

.review-rating i {
    color: #ffc107;
    font-size: 0.875rem;
}

.review-text {
    line-height: 1.8;
    color: var(--color-text-light);
    font-size: 1rem;
}

/* ===================================
   游戏章节
   =================================== */
.chapters {
    padding: var(--spacing-xxl) 0;
    background: var(--color-bg);
}

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

.chapter-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--color-secondary-3);
    transition: all var(--transition-normal);
}

.chapter-card.special {
    border-left-color: #9c27b0;
    background: linear-gradient(135deg, rgba(156, 39, 176, 0.05) 0%, transparent 100%);
}

.chapter-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

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

.chapter-type {
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.chapter-type.main {
    background: var(--color-secondary-3);
    color: var(--color-white);
}

.chapter-type.side {
    background: #9c27b0;
    color: var(--color-white);
}

.chapter-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
}

.chapter-description {
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.chapter-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.meta-item i {
    font-size: 0.875rem;
}

.mood-mystery { color: var(--color-secondary-3); font-weight: 600; }
.mood-horror { color: #f44336; font-weight: 600; }
.mood-emotional { color: #ff9800; font-weight: 600; }
.mood-dark { color: #673ab7; font-weight: 600; }

/* ===================================
   游戏攻略
   =================================== */
.guides {
    padding: var(--spacing-xxl) 0;
    background: var(--color-white);
}

.guide-filters {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.625rem 1.5rem;
    background: var(--color-bg);
    color: var(--color-text);
    border-radius: var(--radius-xl);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    background: var(--color-secondary-1);
    color: var(--color-white);
}

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

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

.guide-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
}

.guide-card:hover {
    border-color: var(--color-secondary-3);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.guide-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto var(--spacing-md);
    background: var(--gradient-primary);
    color: var(--color-white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.guide-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.guide-description {
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.difficulty {
    display: inline-block;
    padding: 0.375rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
}

.difficulty.easy {
    background: rgba(76, 175, 80, 0.1);
    color: #4caf50;
}

.difficulty.medium {
    background: rgba(255, 152, 0, 0.1);
    color: #ff9800;
}

.difficulty.hard {
    background: rgba(244, 67, 54, 0.1);
    color: #f44336;
}

/* ===================================
   版本历史
   =================================== */
.versions {
    padding: var(--spacing-xxl) 0;
    background: var(--color-bg);
}

.versions-timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.versions-timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-border);
}

.version-item {
    position: relative;
    padding-left: 80px;
    margin-bottom: var(--spacing-xl);
}

.version-marker {
    position: absolute;
    left: 20px;
    top: 0;
    width: 20px;
    height: 20px;
    background: var(--color-secondary-3);
    border: 4px solid var(--color-white);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md);
}

.version-item:first-child .version-marker {
    background: var(--gradient-primary);
}

.version-content {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.version-content:hover {
    box-shadow: var(--shadow-lg);
    transform: translateX(4px);
}

.version-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    flex-wrap: wrap;
}

.version-number {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--color-primary);
}

.version-date {
    color: var(--color-text-light);
    font-size: 0.875rem;
}

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

.version-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.version-changes {
    margin-bottom: var(--spacing-md);
}

.version-changes li {
    padding: 0.5rem 0;
    color: var(--color-text-light);
    line-height: 1.6;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.version-changes i {
    margin-top: 0.25rem;
    color: var(--color-secondary-3);
}

.version-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.version-meta span {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-light);
    font-size: 0.875rem;
}

.version-meta i {
    color: var(--color-secondary-3);
}

/* ===================================
   FAQ
   =================================== */
.faq {
    padding: var(--spacing-xxl) 0;
    background: var(--color-white);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    background: var(--color-white);
    border: 1px solid var(--color-border);
}

.faq-question {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-white);
    text-align: left;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-primary);
    transition: all var(--transition-fast);
}

.faq-question:hover {
    background: var(--color-bg);
}

.faq-question i {
    color: var(--color-secondary-3);
    transition: transform var(--transition-fast);
    flex-shrink: 0;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 var(--spacing-lg) var(--spacing-md);
    color: var(--color-text-light);
    line-height: 1.8;
}

/* ===================================
   页脚
   =================================== */
.footer {
    background: var(--color-primary);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

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

.footer-title {
    color: var(--color-white);
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.footer-description {
    line-height: 1.7;
    font-size: 0.875rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
    transition: var(--transition-fast);
    padding: 0.25rem 0;
}

.footer-links a:hover {
    color: var(--color-white);
    padding-left: var(--spacing-xs);
}

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

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background: var(--color-secondary-3);
    transform: translateY(-4px);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.875rem;
}

/* ===================================
   响应式设计
   =================================== */

/* 平板设备 */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 60px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 60px);
        background: var(--color-white);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transition: left var(--transition-normal);
        align-items: flex-start;
        overflow-y: auto;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu a {
        width: 100%;
        padding: var(--spacing-md);
        font-size: 1.125rem;
        border-bottom: 1px solid var(--color-border);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .carousel-btn.prev {
        left: 0;
    }
    
    .carousel-btn.next {
        right: 0;
    }
    
    .versions-timeline::before {
        left: 10px;
    }
    
    .version-marker {
        left: 0;
    }
    
    .version-item {
        padding-left: 50px;
    }
}

/* 手机设备 */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero {
        padding: var(--spacing-xl) 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .hero-info {
        flex-direction: column;
        align-items: stretch;
    }
    
    .info-badge {
        justify-content: center;
    }
    
    .btn-large {
        width: 100%;
        justify-content: center;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .news-grid,
    .gallery-grid,
    .chapters-grid,
    .guides-grid {
        grid-template-columns: 1fr;
    }
    
    .review-stats {
        gap: var(--spacing-md);
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    #back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 45px;
        height: 45px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

/* 大屏幕优化 */
@media (min-width: 1400px) {
    .container {
        max-width: 1320px;
    }
    
    .hero-title {
        font-size: 4rem;
    }
}

/* 打印样式 */
@media print {
    .navbar,
    .menu-toggle,
    #back-to-top,
    .carousel-btn,
    .guide-filters {
        display: none;
    }
    
    .hero {
        background: var(--color-white);
        color: var(--color-text);
    }
}