/* ==========================================
   CSS变量定义 - 主题色管理
   ========================================== */
:root {
    /* 主色调 */
    --primary-color: #2c1816;
    --secondary-color-1: #bf987d;
    --secondary-color-2: #928b8c;
    --secondary-color-3: #94948f;
    
    /* 渐变色 */
    --gradient-primary: linear-gradient(135deg, #2c1816 0%, #3d2622 100%);
    --gradient-secondary: linear-gradient(135deg, #bf987d 0%, #d4ab90 100%);
    --gradient-overlay: linear-gradient(180deg, rgba(44, 24, 22, 0.9) 0%, rgba(44, 24, 22, 0.7) 100%);
    
    /* 中性色 */
    --white: #ffffff;
    --black: #000000;
    --gray-light: #f5f5f5;
    --gray-medium: #cccccc;
    --gray-dark: #333333;
    
    /* 功能色 */
    --success: #4caf50;
    --warning: #ff9800;
    --error: #f44336;
    --info: #2196f3;
    
    /* 阴影 */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.25);
    
    /* 过渡动画 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* 字体 */
    --font-primary: 'Noto Sans SC', sans-serif;
    --font-secondary: 'Roboto', sans-serif;
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* 边框圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
}

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

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

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--gray-dark);
    background-color: var(--white);
    overflow-x: hidden;
}

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

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

ul, ol {
    list-style: none;
}

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

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

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

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

.section-title i {
    margin-right: var(--spacing-xs);
    color: var(--secondary-color-1);
}

/* ==========================================
   返回顶部按钮
   ========================================== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--gradient-secondary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-lg);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

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

/* ==========================================
   头部导航
   ========================================== */
.header {
    background: var(--gradient-primary);
    color: var(--white);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.3rem;
    font-weight: 700;
    white-space: nowrap;
}

.logo img {
    width: 36px;
    height: 36px;
}

.logo:hover {
    color: var(--secondary-color-1);
}

.nav-list {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: nowrap;
}

.nav-list a {
    padding: 0.5rem 0.8rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 0.3rem;
    font-weight: 500;
    white-space: nowrap;
    font-size: 0.9rem;
}

.nav-list a:hover {
    background: rgba(191, 152, 125, 0.2);
    color: var(--secondary-color-1);
}

.nav-list i {
    font-size: 0.9rem;
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 30px;
    height: 30px;
    justify-content: center;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background: var(--white);
    border-radius: 2px;
    transition: var(--transition-normal);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ==========================================
   英雄区
   ========================================== */
.hero {
    background: var(--gradient-primary);
    color: var(--white);
    padding: var(--spacing-lg) 0;
    text-align: center;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
}

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

.hero-subtitle {
    font-size: 1.8rem;
    font-weight: 400;
    color: var(--secondary-color-1);
    margin-bottom: var(--spacing-md);
    font-family: var(--font-secondary);
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

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

.feature-tag {
    background: rgba(191, 152, 125, 0.2);
    padding: 0.5rem 1.2rem;
    border-radius: var(--radius-xl);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border: 1px solid rgba(191, 152, 125, 0.3);
}

.feature-tag i {
    color: var(--secondary-color-1);
}

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

.info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
}

.info-item i {
    color: var(--secondary-color-1);
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 1rem 3rem;
    background: var(--gradient-secondary);
    color: var(--white);
    font-size: 1.2rem;
    font-weight: 700;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
}

.btn-download:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

/* ==========================================
   新闻动态区
   ========================================== */
.news-section {
    background: var(--gray-light);
}

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

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

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

.news-date {
    color: var(--secondary-color-1);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
}

.news-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
}

.news-excerpt {
    color: var(--gray-dark);
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
}

.news-link {
    color: var(--secondary-color-1);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

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

.news-link i {
    transition: var(--transition-fast);
}

.news-link:hover i {
    transform: translateX(5px);
}

/* ==========================================
   媒体画廊
   ========================================== */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

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

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

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(44, 24, 22, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-normal);
}

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

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

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

/* 图片查看器 */
.image-viewer {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.95);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.image-viewer.active {
    display: flex;
}

.image-viewer img {
    max-width: 90%;
    max-height: 90vh;
    object-fit: contain;
}

.viewer-close,
.viewer-prev,
.viewer-next {
    position: absolute;
    background: rgba(191, 152, 125, 0.9);
    color: var(--white);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: var(--transition-normal);
}

.viewer-close {
    top: 2rem;
    right: 2rem;
}

.viewer-prev {
    left: 2rem;
}

.viewer-next {
    right: 2rem;
}

.viewer-close:hover,
.viewer-prev:hover,
.viewer-next:hover {
    background: var(--secondary-color-1);
    transform: scale(1.1);
}

/* ==========================================
   用户评价区
   ========================================== */
.reviews-section {
    background: var(--gray-light);
}

.reviews-stats {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.rating-overview {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.rating-score {
    font-size: 4rem;
    font-weight: 900;
    color: var(--secondary-color-1);
    line-height: 1;
}

.rating-stars {
    font-size: 1.5rem;
    color: #ffc107;
    margin: var(--spacing-sm) 0;
}

.rating-count {
    color: var(--secondary-color-2);
    font-size: 1rem;
}

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

.review-tags .tag {
    background: var(--gradient-secondary);
    color: var(--white);
    padding: 0.5rem 1.2rem;
    border-radius: var(--radius-xl);
    font-size: 0.9rem;
    font-weight: 500;
}

.reviews-carousel {
    position: relative;
}

.reviews-track {
    display: flex;
    gap: var(--spacing-md);
    overflow: hidden;
}

.review-card {
    min-width: 100%;
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
}

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

.reviewer-name {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--primary-color);
}

.review-rating {
    color: #ffc107;
}

.review-text {
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
    color: var(--gray-dark);
}

.review-date {
    color: var(--secondary-color-2);
    font-size: 0.9rem;
}

.carousel-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.carousel-btn {
    background: var(--secondary-color-1);
    color: var(--white);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-btn:hover {
    background: var(--primary-color);
}

.carousel-dots {
    display: flex;
    gap: var(--spacing-xs);
}

.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--gray-medium);
    cursor: pointer;
    transition: var(--transition-fast);
}

.carousel-dot.active {
    background: var(--secondary-color-1);
    width: 30px;
    border-radius: 5px;
}

/* ==========================================
   游戏攻略
   ========================================== */
.guides-filter {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
}

.filter-btn {
    padding: 0.7rem 1.5rem;
    background: var(--white);
    color: var(--gray-dark);
    border: 2px solid var(--gray-medium);
    border-radius: var(--radius-xl);
    font-weight: 600;
    transition: var(--transition-normal);
}

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

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

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

.guide-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border: 2px solid transparent;
}

.guide-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--secondary-color-1);
}

.guide-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-secondary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--white);
    margin-bottom: var(--spacing-sm);
}

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

.guide-desc {
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
    color: var(--gray-dark);
}

.guide-meta {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--secondary-color-2);
}

.guide-meta i {
    margin-right: 0.5rem;
}

.guide-meta .difficulty,
.guide-meta .recommend {
    display: flex;
    align-items: center;
}

/* ==========================================
   章节介绍
   ========================================== */
.chapters-section {
    background: var(--gray-light);
}

.chapters-timeline {
    max-width: 900px;
    margin: 0 auto;
}

.chapter-item {
    position: relative;
    padding-left: 3rem;
    margin-bottom: var(--spacing-lg);
}

.chapter-item::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 40px;
    bottom: -40px;
    width: 2px;
    background: var(--gray-medium);
}

.chapter-item:last-child::before {
    display: none;
}

.chapter-badge {
    position: absolute;
    left: 0;
    top: 0;
    width: 28px;
    height: 28px;
    background: var(--secondary-color-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 0.8rem;
    font-weight: 700;
    box-shadow: var(--shadow-md);
}

.chapter-item.character-chapter .chapter-badge {
    background: var(--gradient-secondary);
}

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

.chapter-content:hover {
    box-shadow: var(--shadow-lg);
    transform: translateX(5px);
}

.chapter-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
}

.chapter-desc {
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
    color: var(--gray-dark);
}

.chapter-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--secondary-color-2);
}

.chapter-meta i {
    margin-right: 0.3rem;
}

.chapter-mood {
    background: var(--gray-light);
    padding: 0.3rem 0.8rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.chapter-mood.important {
    background: rgba(191, 152, 125, 0.2);
    color: var(--secondary-color-1);
}

.chapter-mood.critical {
    background: rgba(244, 67, 54, 0.1);
    color: var(--error);
}

/* ==========================================
   版本历史
   ========================================== */
.versions-list {
    max-width: 900px;
    margin: 0 auto;
}

.version-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    border: 2px solid transparent;
    transition: all var(--transition-normal);
}

.version-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--secondary-color-1);
}

.version-card.current {
    border-color: var(--secondary-color-1);
    box-shadow: var(--shadow-md);
}

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

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

.version-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.version-badge {
    background: var(--gradient-secondary);
    color: var(--white);
    padding: 0.3rem 0.8rem;
    border-radius: var(--radius-xl);
    font-size: 0.85rem;
    font-weight: 600;
}

.version-date {
    color: var(--secondary-color-2);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.version-details h4 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
}

.update-list {
    margin-bottom: var(--spacing-sm);
}

.update-list li {
    padding: 0.5rem 0;
    padding-left: 1.8rem;
    position: relative;
    line-height: 1.6;
}

.update-list li i {
    position: absolute;
    left: 0;
    top: 0.7rem;
    color: var(--success);
}

.version-meta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-sm);
    color: var(--secondary-color-2);
    font-size: 0.95rem;
}

.version-meta i {
    margin-right: 0.5rem;
}

.btn-download-version {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.8rem 2rem;
    background: var(--gradient-secondary);
    color: var(--white);
    font-weight: 600;
    border-radius: var(--radius-xl);
    transition: all var(--transition-normal);
}

.btn-download-version:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ==========================================
   常见问题
   ========================================== */
.faq-section {
    background: var(--gray-light);
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

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

.faq-question {
    width: 100%;
    padding: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    background: var(--white);
    transition: var(--transition-normal);
}

.faq-question:hover {
    background: var(--gray-light);
    color: var(--secondary-color-1);
}

.faq-question i {
    font-size: 1.2rem;
    transition: var(--transition-normal);
    color: var(--secondary-color-1);
}

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

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

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

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

/* ==========================================
   页脚
   ========================================== */
.footer {
    background: var(--gradient-primary);
    color: var(--white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

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

.footer-section h3 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--secondary-color-1);
}

.footer-section p {
    line-height: 1.8;
    opacity: 0.9;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    opacity: 0.9;
    transition: var(--transition-normal);
}

.footer-links a:hover {
    opacity: 1;
    color: var(--secondary-color-1);
    padding-left: 5px;
}

.footer-partners {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(191, 152, 125, 0.3);
}

.footer-partners h4 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
    color: var(--secondary-color-1);
}

.partners-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: center;
}

.partners-list span {
    padding: 0.5rem 1.5rem;
    background: rgba(191, 152, 125, 0.2);
    border-radius: var(--radius-md);
    font-weight: 500;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(191, 152, 125, 0.3);
}

.footer-bottom p {
    opacity: 0.8;
    margin-bottom: 0.5rem;
}

.footer-disclaimer {
    font-size: 0.9rem;
}

/* ==========================================
   响应式设计 - 平板设备
   ========================================== */
@media (max-width: 1200px) {
    .nav-list a {
        padding: 0.4rem 0.7rem;
        font-size: 0.88rem;
        gap: 0.3rem;
    }
    
    .nav-list i {
        font-size: 0.85rem;
    }
}

@media (max-width: 1024px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .section {
        padding: var(--spacing-lg) 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.4rem;
    }
    
    .nav-list {
        gap: 0.5rem;
    }
    
    .nav-list a {
        padding: 0.4rem 0.6rem;
        font-size: 0.85rem;
    }
    
    .nav-list i {
        font-size: 0.8rem;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

/* ==========================================
   响应式设计 - 移动设备
   ========================================== */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--gradient-primary);
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-normal);
    }
    
    .nav.active {
        max-height: 500px;
        box-shadow: var(--shadow-lg);
    }
    
    .nav-list {
        flex-direction: column;
        padding: var(--spacing-sm);
        gap: 0;
    }
    
    .nav-list a {
        padding: var(--spacing-sm);
        border-radius: 0;
        border-bottom: 1px solid rgba(191, 152, 125, 0.2);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-features {
        gap: 0.5rem;
    }
    
    .feature-tag {
        padding: 0.4rem 0.8rem;
        font-size: 0.85rem;
    }
    
    .hero-info {
        flex-direction: column;
        gap: var(--spacing-xs);
        align-items: center;
    }
    
    .btn-download {
        padding: 0.8rem 2rem;
        font-size: 1rem;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .guides-grid {
        grid-template-columns: 1fr;
    }
    
    .chapter-item {
        padding-left: 2rem;
    }
    
    .chapter-item::before {
        left: 8px;
    }
    
    .chapter-badge {
        width: 20px;
        height: 20px;
        font-size: 0.6rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .viewer-close,
    .viewer-prev,
    .viewer-next {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
    
    .viewer-close {
        top: 1rem;
        right: 1rem;
    }
    
    .viewer-prev {
        left: 1rem;
    }
    
    .viewer-next {
        right: 1rem;
    }
}

@media (max-width: 480px) {
    .section-title {
        font-size: 1.6rem;
    }
    
    .hero-title {
        font-size: 1.8rem;
    }
    
    .feature-tag {
        font-size: 0.75rem;
        padding: 0.3rem 0.6rem;
    }
    
    .version-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* ==========================================
   动画效果
   ========================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* ==========================================
   打印样式
   ========================================== */
@media print {
    .header,
    .back-to-top,
    .menu-toggle,
    .footer,
    .btn-download,
    .btn-download-version {
        display: none;
    }
    
    body {
        font-size: 12pt;
    }
    
    .section {
        page-break-inside: avoid;
    }
}