/* ============================================
   火影的养子 游戏官网样式表
   ============================================ */

/* ============================================
   CSS变量定义
   ============================================ */
:root {
    /* 主题色 */
    --color-primary: #d9bec9;
    --color-secondary-1: #31272a;
    --color-secondary-2: #6a4d56;
    --color-secondary-3: #6c5c53;
    
    /* 中性色 */
    --color-white: #ffffff;
    --color-black: #000000;
    --color-light: #f5f5f5;
    --color-dark: #1a1a1a;
    --color-gray: #666666;
    --color-gray-light: #cccccc;
    
    /* 功能色 */
    --color-success: #4caf50;
    --color-warning: #ff9800;
    --color-error: #f44336;
    --color-info: #2196f3;
    
    /* 渐变色 */
    --gradient-primary: linear-gradient(135deg, #d9bec9 0%, #6a4d56 100%);
    --gradient-dark: linear-gradient(135deg, #31272a 0%, #6c5c53 100%);
    --gradient-overlay: linear-gradient(180deg, rgba(49, 39, 42, 0) 0%, rgba(49, 39, 42, 0.8) 100%);
    
    /* 字体 */
    --font-primary: 'Noto Sans SC', sans-serif;
    --font-secondary: 'Poppins', sans-serif;
    
    /* 尺寸 */
    --container-width: 1200px;
    --header-height: 70px;
    --border-radius: 10px;
    --box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    --box-shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.15);
    
    /* 过渡 */
    --transition: all 0.3s ease;
    --transition-fast: all 0.2s ease;
}

/* ============================================
   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);
    color: var(--color-dark);
    background-color: var(--color-white);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

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

/* ============================================
   通用组件
   ============================================ */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

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

.section-title i {
    color: var(--color-primary);
    margin-right: 0.5rem;
}

.section-subtitle {
    text-align: center;
    color: var(--color-gray);
    margin-bottom: 3rem;
    font-size: 1.1rem;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 12px 30px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

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

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

.btn-secondary {
    background: var(--color-white);
    color: var(--color-secondary-1);
    border: 2px solid var(--color-primary);
}

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

/* ============================================
   返回顶部按钮
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--box-shadow);
    z-index: 999;
}

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

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

/* ============================================
   头部导航
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--color-white);
    box-shadow: var(--box-shadow);
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

.navbar {
    height: var(--header-height);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-secondary-1);
}

.logo img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 30px;
    height: 25px;
    z-index: 1001;
}

.menu-toggle span {
    width: 100%;
    height: 3px;
    background: var(--color-secondary-1);
    border-radius: 3px;
    transition: var(--transition);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-menu a {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--color-secondary-1);
    font-weight: 500;
    position: relative;
    padding: 5px 0;
}

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

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

.nav-menu a i {
    font-size: 0.9rem;
    color: var(--color-primary);
}

/* ============================================
   英雄区
   ============================================ */
.hero {
    margin-top: var(--header-height);
    padding: 60px 0;
    background: var(--gradient-dark);
    color: var(--color-white);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23d9bec9" fill-opacity="0.1" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,138.7C960,139,1056,117,1152,96C1248,75,1344,53,1392,42.7L1440,32L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-family: var(--font-secondary);
    font-size: 1.8rem;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
    font-weight: 300;
}

.hero-description {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.hero-info {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    backdrop-filter: blur(5px);
}

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

.hero-tags {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-bottom: 2rem;
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 8px 16px;
    background: rgba(217, 190, 201, 0.2);
    border: 1px solid rgba(217, 190, 201, 0.3);
    border-radius: 20px;
    font-size: 0.9rem;
    backdrop-filter: blur(5px);
}

.tag i {
    color: var(--color-primary);
    font-size: 0.85rem;
}

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

/* ============================================
   新闻动态区
   ============================================ */
.news {
    padding: 80px 0;
    background: var(--color-light);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.news-card {
    background: var(--color-white);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

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

.news-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.news-date {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--color-gray);
    font-size: 0.9rem;
}

.news-date i {
    color: var(--color-primary);
}

.news-badge {
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 600;
    background: var(--color-gray-light);
    color: var(--color-dark);
}

.news-badge.new {
    background: var(--gradient-primary);
    color: var(--color-white);
}

.news-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--color-secondary-1);
}

.news-content {
    color: var(--color-gray);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.news-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-secondary-2);
    font-weight: 600;
}

.news-link:hover {
    color: var(--color-primary);
    gap: 0.8rem;
}

/* ============================================
   媒体画廊
   ============================================ */
.gallery {
    padding: 80px 0;
    background: var(--color-white);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

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

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

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(49, 39, 42, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

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

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

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

/* ============================================
   用户评价区
   ============================================ */
.reviews {
    padding: 80px 0;
    background: var(--color-light);
}

.reviews-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

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

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

.stat-label {
    color: var(--color-gray);
}

.stars {
    display: flex;
    gap: 0.3rem;
    justify-content: center;
    margin-bottom: 0.5rem;
}

.stars i {
    color: #ffa500;
    font-size: 1.2rem;
}

.review-tags {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 3rem;
}

.review-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 10px 20px;
    background: var(--color-white);
    border-radius: 25px;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.review-tag i {
    color: var(--color-primary);
}

.review-tag:hover {
    transform: translateY(-3px);
    box-shadow: var(--box-shadow-hover);
}

.reviews-slider {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.review-card {
    background: var(--color-white);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
}

.review-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.reviewer-info {
    display: flex;
    gap: 1rem;
    align-items: center;
}

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

.reviewer-name {
    font-weight: 600;
    margin-bottom: 0.3rem;
    color: var(--color-secondary-1);
}

.review-stars {
    display: flex;
    gap: 0.2rem;
}

.review-stars i {
    color: #ffa500;
    font-size: 0.9rem;
}

.review-date {
    color: var(--color-gray);
    font-size: 0.85rem;
}

.review-text {
    color: var(--color-gray);
    line-height: 1.8;
}

/* ============================================
   游戏攻略
   ============================================ */
.strategy {
    padding: 80px 0;
    background: var(--color-white);
}

.strategy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.strategy-card {
    background: var(--color-white);
    border: 2px solid var(--color-light);
    border-radius: var(--border-radius);
    padding: 2rem;
    transition: var(--transition);
    cursor: pointer;
}

.strategy-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-hover);
}

.strategy-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.strategy-icon i {
    color: var(--color-white);
    font-size: 1.8rem;
}

.strategy-title {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--color-secondary-1);
}

.strategy-desc {
    color: var(--color-gray);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.strategy-meta {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.difficulty,
.recommend {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-gray);
}

.difficulty i,
.recommend i {
    color: var(--color-primary);
}

/* ============================================
   游戏章节介绍
   ============================================ */
.chapters {
    padding: 80px 0;
    background: var(--color-light);
}

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

.chapter-item {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    position: relative;
}

.chapter-item::before {
    content: '';
    position: absolute;
    left: 19px;
    top: 50px;
    width: 2px;
    height: calc(100% + 30px);
    background: var(--color-gray-light);
}

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

.chapter-marker {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-weight: 700;
    position: relative;
    z-index: 1;
}

.chapter-content {
    flex: 1;
    background: var(--color-white);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
}

.chapter-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.chapter-title {
    font-size: 1.5rem;
    color: var(--color-secondary-1);
}

.chapter-type {
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 600;
}

.chapter-type.main {
    background: var(--color-secondary-2);
    color: var(--color-white);
}

.chapter-type.character {
    background: var(--color-primary);
    color: var(--color-white);
}

.chapter-type.upcoming {
    background: var(--color-gray-light);
    color: var(--color-dark);
}

.chapter-badge {
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 600;
}

.chapter-badge.new {
    background: var(--gradient-primary);
    color: var(--color-white);
}

.chapter-desc {
    color: var(--color-gray);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

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

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

.chapter-meta i {
    color: var(--color-primary);
}

.chapter-item.locked .chapter-marker {
    background: var(--color-gray-light);
}

.chapter-item.locked .chapter-content {
    opacity: 0.6;
}

/* ============================================
   版本历史
   ============================================ */
.versions {
    padding: 80px 0;
    background: var(--color-white);
}

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

.version-item {
    background: var(--color-light);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin-bottom: 2rem;
    border-left: 4px solid var(--color-gray-light);
    transition: var(--transition);
}

.version-item:hover {
    box-shadow: var(--box-shadow);
}

.version-item.current {
    border-left-color: var(--color-primary);
    background: var(--color-white);
    box-shadow: var(--box-shadow);
}

.version-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.version-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.version-number {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-secondary-1);
}

.version-badge {
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    background: var(--gradient-primary);
    color: var(--color-white);
}

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

.version-date i {
    color: var(--color-primary);
}

.version-meta {
    display: flex;
    gap: 2rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    font-size: 0.95rem;
    color: var(--color-gray);
}

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

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

.version-details h4 {
    margin-bottom: 1rem;
    color: var(--color-secondary-1);
    font-size: 1.1rem;
}

.version-changes {
    margin-bottom: 1.5rem;
}

.version-changes li {
    display: flex;
    align-items: flex-start;
    gap: 0.8rem;
    margin-bottom: 0.8rem;
    color: var(--color-gray);
    line-height: 1.6;
}

.version-changes i {
    color: var(--color-primary);
    margin-top: 0.2rem;
    flex-shrink: 0;
}

.version-download {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 10px 25px;
    background: var(--gradient-primary);
    color: var(--color-white);
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: var(--transition);
}

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

/* ============================================
   常见问题
   ============================================ */
.faq {
    padding: 80px 0;
    background: var(--color-light);
}

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

.faq-item {
    background: var(--color-white);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.faq-question {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem 2rem;
    cursor: pointer;
    transition: var(--transition);
}

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

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

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

.faq-question h3 {
    flex: 1;
    font-size: 1.1rem;
    color: var(--color-secondary-1);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 1000px;
}

.faq-answer p,
.faq-answer ul {
    padding: 0 2rem 1.5rem 4rem;
    color: var(--color-gray);
    line-height: 1.8;
}

.faq-answer ul {
    list-style: disc;
    padding-left: 5rem;
}

.faq-answer ul li {
    margin-bottom: 0.5rem;
}

.faq-answer strong {
    color: var(--color-secondary-1);
    font-weight: 600;
}

/* ============================================
   底部信息
   ============================================ */
.footer {
    background: var(--gradient-dark);
    color: var(--color-white);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h3 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    color: var(--color-primary);
}

.footer-desc {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--color-primary);
    padding-left: 0.5rem;
}

.footer-links i {
    color: var(--color-primary);
    font-size: 0.9rem;
}

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

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

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

/* ============================================
   响应式设计 - 平板
   ============================================ */
@media (max-width: 1024px) {
    :root {
        --container-width: 960px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 2.8rem;
    }
    
    .hero-subtitle {
        font-size: 1.5rem;
    }
}

/* ============================================
   响应式设计 - 移动端
   ============================================ */
@media (max-width: 768px) {
    :root {
        --header-height: 60px;
        font-size: 14px;
    }
    
    /* 导航菜单 */
    .menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: -100%;
        width: 100%;
        height: calc(100vh - var(--header-height));
        background: var(--color-white);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        transition: var(--transition);
        overflow-y: auto;
        box-shadow: var(--box-shadow);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    /* 英雄区 */
    .hero {
        padding: 40px 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .hero-info {
        gap: 0.8rem;
    }
    
    .info-item {
        font-size: 0.85rem;
        padding: 6px 12px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }
    
    /* 通用区块 */
    .section-title {
        font-size: 1.8rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    section {
        padding: 60px 0 !important;
    }
    
    /* 网格布局 */
    .news-grid,
    .gallery-grid,
    .strategy-grid,
    .reviews-slider {
        grid-template-columns: 1fr;
    }
    
    /* 评价区统计 */
    .reviews-stats {
        gap: 2rem;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    /* 章节时间线 */
    .chapter-item {
        gap: 1rem;
    }
    
    .chapter-item::before {
        left: 14px;
    }
    
    .chapter-marker {
        width: 30px;
        height: 30px;
        font-size: 0.9rem;
    }
    
    .chapter-content {
        padding: 1.5rem;
    }
    
    /* 版本信息 */
    .version-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .version-number {
        font-size: 1.5rem;
    }
    
    /* 底部 */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    /* 返回顶部按钮 */
    .back-to-top {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.2rem;
    }
    
    .logo img {
        width: 32px;
        height: 32px;
    }
    
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-item {
        min-height: 200px;
    }
}

/* ============================================
   打印样式
   ============================================ */
@media print {
    .header,
    .back-to-top,
    .menu-toggle,
    .hero-buttons,
    .version-download {
        display: none;
    }
    
    body {
        font-size: 12pt;
        color: #000;
    }
    
    a {
        text-decoration: underline;
    }
    
    section {
        page-break-inside: avoid;
    }
}

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

@keyframes slideIn {
    from {
        transform: translateX(-20px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

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

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

.slide-in {
    animation: slideIn 0.6s ease-out;
}

/* ============================================
   辅助类
   ============================================ */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.hidden {
    display: none;
}

.visible {
    display: block;
}