/* ============================================
   CSS变量定义 - 主题色管理
   ============================================ */
:root {
    --primary-color: #0d2036;
    --accent-color-1: #b1aec1;
    --accent-color-2: #5368b9;
    --accent-color-3: #65aace;
    --text-light: #ffffff;
    --text-dark: #333333;
    --bg-light: #f5f5f5;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-hover: rgba(0, 0, 0, 0.2);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================
   头部导航样式
   ============================================ */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1a2f4a 100%);
    box-shadow: 0 2px 10px var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-light);
    font-weight: 700;
    font-size: 1.5rem;
    transition: var(--transition);
}

.logo:hover {
    transform: scale(1.05);
    color: var(--accent-color-3);
}

.logo-img {
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

.logo-text {
    font-family: 'Orbitron', sans-serif;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 5px;
}

.nav-menu a:hover {
    color: var(--accent-color-3);
    transform: translateY(-2px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-light);
    transition: var(--transition);
}

/* ============================================
   英雄区样式
   ============================================ */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color-2) 100%);
    padding: 3rem 0;
    color: var(--text-light);
    min-height: auto;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--accent-color-3);
    font-weight: 400;
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    opacity: 0.9;
    line-height: 1.8;
}

.hero-info {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 5px;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.tag {
    background: var(--accent-color-3);
    color: var(--primary-color);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--accent-color-3);
    color: var(--primary-color);
    padding: 1rem 2.5rem;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(101, 170, 206, 0.3);
}

.btn-download:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(101, 170, 206, 0.5);
    background: #7bb8d6;
}

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

.hero-image img {
    max-width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* ============================================
   通用区块样式
   ============================================ */
section {
    padding: 4rem 0;
}

.section-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.section-title i {
    color: var(--accent-color-2);
}

/* ============================================
   新闻/动态区样式
   ============================================ */
.news {
    background: var(--text-light);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.news-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px var(--shadow);
    transition: var(--transition);
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--shadow-hover);
}

.news-date {
    color: var(--accent-color-2);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    font-weight: 500;
}

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

.news-content {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.news-link {
    color: var(--accent-color-2);
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: var(--transition);
}

.news-link:hover {
    color: var(--accent-color-3);
    gap: 10px;
}

/* ============================================
   媒体画廊样式
   ============================================ */
.gallery {
    background: linear-gradient(to bottom, var(--bg-light), var(--text-light));
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.gallery-item {
    overflow: hidden;
    border-radius: 15px;
    box-shadow: 0 5px 15px var(--shadow);
    transition: var(--transition);
    cursor: pointer;
}

.gallery-item:hover {
    transform: scale(1.03);
    box-shadow: 0 8px 25px var(--shadow-hover);
}

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

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

/* ============================================
   用户评价区样式
   ============================================ */
.reviews {
    background: var(--text-light);
}

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

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

.stats-value {
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent-color-2);
    font-family: 'Orbitron', sans-serif;
}

.stats-label {
    color: #666;
    margin-top: 0.5rem;
    font-size: 0.9rem;
}

.stars {
    color: #ffd700;
    margin-top: 0.5rem;
    font-size: 1.2rem;
}

.review-tags {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 3rem;
}

.review-tag {
    background: var(--accent-color-1);
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
}

.reviews-carousel {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    min-height: 200px;
}

.review-card {
    display: none;
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px var(--shadow);
}

.review-card.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

.review-rating {
    color: #ffd700;
}

.review-text {
    color: #666;
    line-height: 1.8;
}

.carousel-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    margin-top: 2rem;
}

.carousel-btn {
    background: var(--accent-color-2);
    color: var(--text-light);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-btn:hover {
    background: var(--accent-color-3);
    transform: scale(1.1);
}

.carousel-dots {
    display: flex;
    gap: 0.5rem;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent-color-1);
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background: var(--accent-color-2);
    transform: scale(1.2);
}

/* ============================================
   版本历史样式
   ============================================ */
.versions {
    background: var(--bg-light);
}

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

.version-item {
    background: var(--text-light);
    padding: 2rem;
    border-radius: 15px;
    margin-bottom: 1.5rem;
    box-shadow: 0 5px 15px var(--shadow);
    border-left: 4px solid var(--accent-color-2);
    transition: var(--transition);
}

.version-item:hover {
    transform: translateX(5px);
    box-shadow: 0 8px 25px var(--shadow-hover);
}

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

.version-number {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color-2);
}

.version-date {
    color: #666;
    font-size: 0.9rem;
}

.version-content ul {
    margin-left: 1.5rem;
    margin-top: 0.5rem;
    color: #666;
}

.version-content li {
    margin-bottom: 0.5rem;
}

.version-meta {
    display: flex;
    gap: 1.5rem;
    margin-top: 1rem;
    flex-wrap: wrap;
    color: #666;
    font-size: 0.9rem;
}

.version-meta a {
    color: var(--accent-color-2);
    text-decoration: none;
    transition: var(--transition);
}

.version-meta a:hover {
    color: var(--accent-color-3);
}

/* ============================================
   游戏攻略样式
   ============================================ */
.guides {
    background: var(--text-light);
}

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

.filter-btn {
    background: var(--bg-light);
    border: 2px solid var(--accent-color-1);
    color: var(--primary-color);
    padding: 0.7rem 1.5rem;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--accent-color-2);
    color: var(--text-light);
    border-color: var(--accent-color-2);
}

.guides-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.guide-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px var(--shadow);
    transition: var(--transition);
}

.guide-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--shadow-hover);
}

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

.guide-title {
    font-size: 1.2rem;
    color: var(--primary-color);
    flex: 1;
}

.guide-difficulty {
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
}

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

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

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

.guide-description {
    color: #666;
    margin-bottom: 1rem;
    line-height: 1.8;
}

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

.guide-tag {
    background: var(--accent-color-1);
    color: var(--primary-color);
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.75rem;
}

/* ============================================
   游戏章节样式
   ============================================ */
.chapters {
    background: linear-gradient(to bottom, var(--text-light), var(--bg-light));
}

.chapters-list {
    max-width: 1000px;
    margin: 0 auto;
}

.chapter-card {
    background: var(--text-light);
    padding: 2rem;
    border-radius: 15px;
    margin-bottom: 1.5rem;
    box-shadow: 0 5px 15px var(--shadow);
    transition: var(--transition);
}

.chapter-card:hover {
    transform: translateX(5px);
    box-shadow: 0 8px 25px var(--shadow-hover);
}

.chapter-card.main {
    border-left: 4px solid var(--accent-color-2);
}

.chapter-card.character {
    border-left: 4px solid var(--accent-color-3);
}

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

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

.chapter-type {
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.chapter-card.main .chapter-type {
    background: var(--accent-color-2);
    color: var(--text-light);
}

.chapter-card.character .chapter-type {
    background: var(--accent-color-3);
    color: var(--primary-color);
}

.chapter-description {
    color: #666;
    margin-bottom: 1rem;
    line-height: 1.8;
}

.chapter-info {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    color: #666;
    font-size: 0.9rem;
}

.chapter-info span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.chapter-mood {
    color: var(--accent-color-2);
    font-style: italic;
    font-size: 0.9rem;
}

/* ============================================
   常见问题样式
   ============================================ */
.faq {
    background: var(--text-light);
}

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

.faq-item {
    background: var(--bg-light);
    margin-bottom: 1rem;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 10px var(--shadow);
    transition: var(--transition);
}

.faq-item:hover {
    box-shadow: 0 4px 15px var(--shadow-hover);
}

.faq-question {
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--primary-color);
    transition: var(--transition);
}

.faq-question:hover {
    background: rgba(83, 104, 185, 0.1);
}

.faq-question i {
    transition: var(--transition);
    color: var(--accent-color-2);
}

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

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

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

.faq-answer p {
    padding: 0 1.5rem 1.5rem;
    color: #666;
    line-height: 1.8;
}

/* ============================================
   页脚样式
   ============================================ */
.footer {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1a2f4a 100%);
    color: var(--text-light);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-title {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--accent-color-3);
    font-family: 'Orbitron', sans-serif;
}

.footer-links {
    list-style: none;
}

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

.footer-links a {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
    opacity: 0.9;
}

.footer-links a:hover {
    color: var(--accent-color-3);
    opacity: 1;
    padding-left: 5px;
}

.footer-text {
    opacity: 0.8;
    margin-bottom: 1rem;
    line-height: 1.8;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--accent-color-3);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.8;
}

/* ============================================
   返回顶部按钮
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--accent-color-2);
    color: var(--text-light);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: 0 4px 15px var(--shadow);
    transition: var(--transition);
    z-index: 999;
}

.back-to-top:hover {
    background: var(--accent-color-3);
    transform: translateY(-5px);
    box-shadow: 0 6px 20px var(--shadow-hover);
}

.back-to-top.show {
    display: flex;
}

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--primary-color);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
        gap: 0;
    }

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

    .nav-menu li {
        width: 100%;
        padding: 1rem 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

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

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

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

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

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

    .hero-info {
        justify-content: center;
    }

    .hero-tags {
        justify-content: center;
    }

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

    .reviews-stats {
        gap: 2rem;
    }

    .stats-value {
        font-size: 2rem;
    }

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

    .version-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .chapter-header {
        flex-direction: column;
        align-items: flex-start;
    }

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

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

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.5rem;
    }

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

    .btn-download {
        padding: 0.8rem 2rem;
        font-size: 1rem;
    }
}