/* ============================================
   全局样式与CSS变量
   ============================================ */

:root {
    /* 主题色 */
    --primary-color: #937e89;
    --secondary-color-1: #4d1a25;
    --secondary-color-2: #bdc2ca;
    --secondary-color-3: #40394c;
    
    /* 文字颜色 */
    --text-primary: #2c2c2c;
    --text-secondary: #666;
    --text-light: #999;
    --text-white: #fff;
    
    /* 背景色 */
    --bg-primary: #fff;
    --bg-secondary: #f8f8f8;
    --bg-dark: var(--secondary-color-3);
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* 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);
    
    /* 过渡 */
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
    background-color: var(--bg-primary);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.section-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--secondary-color-1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

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

/* ============================================
   头部导航
   ============================================ */

.header {
    background: linear-gradient(135deg, var(--secondary-color-1) 0%, var(--secondary-color-3) 100%);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--text-white);
    font-size: 1.5rem;
    font-weight: 700;
    transition: var(--transition);
}

.logo:hover {
    transform: scale(1.05);
    opacity: 0.9;
}

.logo-img {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
}

.logo-text {
    font-family: 'Noto Serif SC', serif;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-link {
    color: var(--text-white);
    text-decoration: none;
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--text-white);
    border-radius: 2px;
    transition: var(--transition);
}

/* ============================================
   英雄区
   ============================================ */

.hero {
    background: linear-gradient(135deg, var(--secondary-color-2) 0%, var(--bg-secondary) 100%);
    padding: var(--spacing-lg) 0;
}

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

.hero-image {
    text-align: center;
}

.cover-img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

.cover-img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

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

.hero-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 3rem;
    font-weight: 700;
    color: var(--secondary-color-1);
    margin: 0;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 400;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.feature-tag {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color-3) 100%);
    color: var(--text-white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.8);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

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

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: linear-gradient(135deg, var(--secondary-color-1) 0%, var(--primary-color) 100%);
    color: var(--text-white);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    align-self: flex-start;
}

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

.btn-download:active {
    transform: translateY(-1px);
}

/* ============================================
   新闻/动态区
   ============================================ */

.news {
    background-color: var(--bg-primary);
}

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

.news-card {
    background: var(--bg-primary);
    border: 1px solid var(--secondary-color-2);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.news-date {
    color: var(--primary-color);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.news-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.3rem;
    color: var(--secondary-color-1);
    margin-bottom: var(--spacing-sm);
}

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

.news-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.news-link:hover {
    color: var(--secondary-color-1);
    gap: 0.8rem;
}

/* ============================================
   媒体画廊
   ============================================ */

.gallery {
    background-color: var(--bg-secondary);
}

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

.gallery-item {
    overflow: hidden;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    cursor: pointer;
}

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

.gallery-img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition);
}

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

/* ============================================
   用户评价区
   ============================================ */

.reviews {
    background-color: var(--bg-primary);
}

.reviews-summary {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--bg-secondary) 0%, rgba(147, 126, 137, 0.1) 100%);
    border-radius: var(--radius-lg);
}

.rating-box {
    text-align: center;
    padding: var(--spacing-md);
}

.rating-score {
    font-size: 3rem;
    font-weight: 700;
    color: var(--secondary-color-1);
    margin-bottom: var(--spacing-sm);
}

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

.rating-count {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.tags-box h3 {
    font-size: 1.2rem;
    color: var(--secondary-color-1);
    margin-bottom: var(--spacing-sm);
}

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

.tag {
    background-color: var(--primary-color);
    color: var(--text-white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    transition: var(--transition);
}

.tag:hover {
    background-color: var(--secondary-color-1);
    transform: translateY(-2px);
}

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

.review-card {
    background: var(--bg-primary);
    border: 1px solid var(--secondary-color-2);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.review-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

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

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

.review-stars {
    color: #ffc107;
}

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

/* ============================================
   版本历史
   ============================================ */

.versions {
    background-color: var(--bg-secondary);
}

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

.version-item {
    background: var(--bg-primary);
    border-left: 4px solid var(--primary-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.version-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--secondary-color-2);
}

.version-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary-color-1);
}

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

.version-content ul {
    margin-left: var(--spacing-md);
    margin-top: var(--spacing-sm);
    color: var(--text-secondary);
}

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

.version-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--secondary-color-2);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

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

.version-download {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: var(--spacing-md);
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.version-download:hover {
    color: var(--secondary-color-1);
    gap: 0.8rem;
}

/* ============================================
   游戏攻略
   ============================================ */

.guides {
    background-color: var(--bg-primary);
}

.filter-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.filter-btn {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 2px solid var(--secondary-color-2);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--primary-color);
    color: var(--text-white);
    border-color: var(--primary-color);
}

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

.guide-card {
    background: var(--bg-primary);
    border: 1px solid var(--secondary-color-2);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

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

.guide-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.2rem;
    color: var(--secondary-color-1);
    flex: 1;
}

.guide-difficulty {
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
    white-space: nowrap;
}

.guide-difficulty.easy {
    background-color: #d4edda;
    color: #155724;
}

.guide-difficulty.medium {
    background-color: #fff3cd;
    color: #856404;
}

.guide-difficulty.hard {
    background-color: #f8d7da;
    color: #721c24;
}

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

.guide-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.guide-tag {
    background-color: var(--secondary-color-2);
    color: var(--text-primary);
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
}

/* ============================================
   游戏章节
   ============================================ */

.chapters {
    background-color: var(--bg-secondary);
}

.chapters-list {
    display: grid;
    gap: var(--spacing-md);
}

.chapter-card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border-left: 4px solid transparent;
}

.chapter-card.main {
    border-left-color: var(--primary-color);
}

.chapter-card.character {
    border-left-color: var(--secondary-color-1);
}

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

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

.chapter-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.3rem;
    color: var(--secondary-color-1);
}

.chapter-type {
    background-color: var(--primary-color);
    color: var(--text-white);
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
}

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

.chapter-info {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

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

/* ============================================
   常见问题
   ============================================ */

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

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

.faq-item {
    background: var(--bg-primary);
    border: 1px solid var(--secondary-color-2);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    overflow: hidden;
    transition: var(--transition);
}

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

.faq-question {
    padding: var(--spacing-md);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--secondary-color-1);
    transition: var(--transition);
}

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

.faq-question i {
    color: var(--primary-color);
    transition: var(--transition);
}

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

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

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 var(--spacing-md) var(--spacing-md);
}

.faq-answer p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ============================================
   返回顶部按钮
   ============================================ */

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color-1) 100%);
    color: var(--text-white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

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

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

/* ============================================
   页脚
   ============================================ */

.footer {
    background: linear-gradient(135deg, var(--secondary-color-3) 0%, var(--secondary-color-1) 100%);
    color: var(--text-white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-white);
}

.footer-section ul {
    list-style: none;
}

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

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
    display: inline-block;
}

.footer-section a:hover {
    color: var(--text-white);
    transform: translateX(5px);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.8);
}

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

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--secondary-color-1);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-lg);
        padding: var(--spacing-md) 0;
    }

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

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active .bar:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

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

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .hero-meta {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .reviews-summary {
        grid-template-columns: 1fr;
    }

    .news-grid,
    .gallery-grid,
    .reviews-carousel,
    .guides-grid {
        grid-template-columns: 1fr;
    }

    .filter-buttons {
        justify-content: flex-start;
    }

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

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

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

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

    .hero-title {
        font-size: 1.5rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .hero-meta {
        font-size: 0.85rem;
    }
}