/* ===================================
   CSS Variables - 颜色主题
   =================================== */
:root {
    --primary-color: #3a2e25;
    --secondary-color-1: #cbb3ac;
    --secondary-color-2: #93948a;
    --secondary-color-3: #908b8c;
    
    --text-color: #333333;
    --text-light: #666666;
    --text-white: #ffffff;
    
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --bg-dark: #1a1a1a;
    
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);
    
    --transition: all 0.3s ease;
    
    --header-height: 70px;
    --container-width: 1200px;
}

/* ===================================
   Reset & Base Styles
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

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

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

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

ul {
    list-style: none;
}

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

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

.section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.section-title i {
    margin-right: 10px;
    color: var(--secondary-color-2);
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 50px;
}

/* ===================================
   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), var(--secondary-color-2));
    color: var(--text-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
    box-shadow: var(--shadow-md);
}

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

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

/* ===================================
   Header & Navigation
   =================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    z-index: 100;
    transition: var(--transition);
}

.header.scroll {
    box-shadow: var(--shadow-md);
}

.nav {
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

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

.nav-list {
    display: flex;
    gap: 30px;
}

.nav-link {
    color: var(--text-color);
    font-weight: 500;
    padding: 8px 0;
    position: relative;
}

.nav-link i {
    margin-right: 6px;
    color: var(--secondary-color-2);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color-2));
    transition: var(--transition);
}

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

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

/* ===================================
   Hero Section
   =================================== */
.hero {
    margin-top: var(--header-height);
    background: linear-gradient(135deg, var(--secondary-color-1) 0%, var(--secondary-color-3) 100%);
    padding: 60px 0;
}

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

.hero-badge {
    display: inline-flex;
    gap: 10px;
    margin-bottom: 20px;
}

.badge-new,
.badge-version {
    padding: 8px 20px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.9rem;
}

.badge-new {
    background: linear-gradient(135deg, #ff6b6b, #ee5a6f);
    color: var(--text-white);
    animation: pulse 2s ease-in-out infinite;
}

.badge-version {
    background: var(--bg-white);
    color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--primary-color);
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-subtitle {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.8rem;
    color: var(--secondary-color-3);
    margin-bottom: 20px;
    font-weight: 700;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-color);
    max-width: 800px;
    margin: 0 auto 30px;
    line-height: 1.8;
}

.hero-tags {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 30px;
}

.tag {
    background: var(--bg-white);
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 0.95rem;
    color: var(--text-color);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.tag i {
    margin-right: 8px;
    color: var(--secondary-color-2);
}

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

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 35px;
    border-radius: 30px;
    font-size: 1.1rem;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color-2));
    color: var(--text-white);
}

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

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--text-white);
    transform: translateY(-3px);
}

.btn-download {
    background: linear-gradient(135deg, var(--secondary-color-2), var(--secondary-color-3));
    color: var(--text-white);
    padding: 12px 28px;
    font-size: 1rem;
}

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

/* ===================================
   News Section
   =================================== */
.news {
    background: var(--bg-white);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.news-card {
    background: var(--bg-light);
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.news-date {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.news-date i {
    color: var(--secondary-color-2);
}

.news-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.news-excerpt {
    color: var(--text-color);
    line-height: 1.8;
    margin-bottom: 20px;
}

.news-link {
    color: var(--primary-color);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

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

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

/* ===================================
   Gallery Section
   =================================== */
.gallery {
    background: var(--bg-light);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 15px;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    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(58, 46, 37, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.gallery-overlay i {
    font-size: 3rem;
    color: var(--text-white);
    transform: scale(0.5);
    transition: var(--transition);
}

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

.gallery-item:hover .gallery-overlay i {
    transform: scale(1);
}

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

/* Lightbox */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
}

.lightbox.active {
    display: flex;
}

.lightbox img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    border-radius: 10px;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: absolute;
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-white);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: var(--transition);
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
    background: rgba(255, 255, 255, 0.3);
}

.lightbox-close {
    top: 20px;
    right: 20px;
}

.lightbox-prev {
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.lightbox-next {
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
}

/* ===================================
   Reviews Section
   =================================== */
.reviews {
    background: var(--bg-white);
}

.reviews-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.stat-item {
    text-align: center;
    padding: 30px;
    background: var(--bg-light);
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.stat-number {
    font-size: 3rem;
    font-weight: 900;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.stat-label {
    color: var(--text-light);
    font-size: 1rem;
}

.stars {
    display: flex;
    justify-content: center;
    gap: 5px;
    margin-bottom: 8px;
}

.stars i {
    color: #ffc107;
    font-size: 1.2rem;
}

.review-tags {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 40px;
}

.review-tag {
    background: linear-gradient(135deg, var(--secondary-color-1), var(--secondary-color-3));
    color: var(--text-white);
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 0.9rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.reviews-carousel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.review-card {
    background: var(--bg-light);
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.review-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.review-author {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    color: var(--primary-color);
}

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

.review-rating {
    display: flex;
    gap: 3px;
}

.review-rating i {
    color: #ffc107;
    font-size: 1rem;
}

.review-text {
    line-height: 1.8;
    color: var(--text-color);
    margin-bottom: 15px;
}

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

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
}

/* ===================================
   Guide Section
   =================================== */
.guide {
    background: var(--bg-light);
}

.guide-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 40px;
}

.filter-btn {
    padding: 12px 28px;
    border-radius: 25px;
    font-weight: 600;
    background: var(--bg-white);
    color: var(--text-color);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color-2));
    color: var(--text-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.guide-card {
    background: var(--bg-white);
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.guide-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--secondary-color-1), var(--secondary-color-3));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.guide-icon i {
    font-size: 2rem;
    color: var(--text-white);
}

.guide-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.guide-description {
    color: var(--text-color);
    line-height: 1.8;
    margin-bottom: 20px;
}

.guide-meta {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.guide-difficulty,
.guide-recommend {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    padding: 8px 15px;
    border-radius: 20px;
    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-recommend {
    background: var(--bg-light);
    color: var(--text-color);
}

/* ===================================
   Chapters Section
   =================================== */
.chapters {
    background: var(--bg-white);
}

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

.chapters-timeline::before {
    content: '';
    position: absolute;
    left: 40px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--secondary-color-1), var(--secondary-color-3));
}

.chapter-item {
    position: relative;
    padding-left: 100px;
    margin-bottom: 40px;
}

.chapter-marker {
    position: absolute;
    left: 27px;
    top: 0;
    width: 30px;
    height: 30px;
    background: var(--bg-white);
    border: 4px solid var(--secondary-color-2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.chapter-item.main .chapter-marker {
    border-color: var(--primary-color);
}

.chapter-marker i {
    font-size: 0.7rem;
    color: var(--primary-color);
}

.chapter-content {
    background: var(--bg-light);
    padding: 25px;
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.chapter-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

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

.chapter-badge {
    padding: 6px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.chapter-badge.main {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color-2));
    color: var(--text-white);
}

.chapter-badge.side {
    background: linear-gradient(135deg, var(--secondary-color-1), var(--secondary-color-3));
    color: var(--text-white);
}

.chapter-description {
    color: var(--text-color);
    line-height: 1.8;
    margin-bottom: 15px;
}

.chapter-info {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 15px;
    background: var(--bg-white);
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--text-color);
}

.info-item i {
    color: var(--secondary-color-2);
}

.info-item.emotion-neutral {
    border-left: 3px solid #6c757d;
}

.info-item.emotion-important {
    border-left: 3px solid #ffc107;
}

/* ===================================
   Versions Section
   =================================== */
.versions {
    background: var(--bg-light);
}

.versions-list {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.version-item {
    background: var(--bg-white);
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: var(--transition);
}

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

.version-item.current {
    border: 3px solid var(--primary-color);
}

.version-header {
    padding: 25px 30px;
    background: linear-gradient(135deg, var(--secondary-color-1), var(--bg-light));
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.version-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.version-number {
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--primary-color);
    font-family: 'Orbitron', sans-serif;
}

.version-badge {
    padding: 6px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.version-badge.current {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color-2));
    color: var(--text-white);
    animation: pulse 2s ease-in-out infinite;
}

.version-meta {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.version-date,
.version-size,
.version-platform {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-color);
    font-size: 0.95rem;
}

.version-date i,
.version-size i,
.version-platform i {
    color: var(--secondary-color-2);
}

.version-content {
    padding: 30px;
}

.version-content h4 {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.update-list {
    list-style: none;
    margin-bottom: 25px;
}

.update-list li {
    padding: 10px 0;
    padding-left: 30px;
    position: relative;
    line-height: 1.8;
    color: var(--text-color);
}

.update-list li i {
    position: absolute;
    left: 0;
    top: 12px;
    color: var(--secondary-color-2);
}

/* ===================================
   FAQ Section
   =================================== */
.faq {
    background: var(--bg-white);
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.faq-item {
    background: var(--bg-light);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 25px 30px;
    text-align: left;
    background: var(--bg-light);
    cursor: pointer;
    transition: var(--transition);
}

.faq-question:hover {
    background: rgba(203, 179, 172, 0.1);
}

.faq-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--secondary-color-1), var(--secondary-color-3));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.faq-icon i {
    color: var(--text-white);
    font-size: 1.2rem;
}

.faq-text {
    flex: 1;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
}

.faq-toggle {
    flex-shrink: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.faq-toggle i {
    color: var(--secondary-color-2);
    font-size: 1.2rem;
}

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

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

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

.faq-answer > div {
    padding: 0 30px 25px 85px;
}

.faq-answer p,
.faq-answer ul,
.faq-answer ol {
    color: var(--text-color);
    line-height: 1.8;
    margin-bottom: 15px;
}

.faq-answer ul,
.faq-answer ol {
    padding-left: 20px;
}

.faq-answer ul {
    list-style: disc;
}

.faq-answer ol {
    list-style: decimal;
}

.faq-answer li {
    margin-bottom: 8px;
}

.faq-answer strong {
    color: var(--primary-color);
}

.faq-answer code {
    background: var(--bg-dark);
    color: #00ff00;
    padding: 4px 8px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

.faq-answer a {
    color: var(--primary-color);
    text-decoration: underline;
}

.faq-answer a:hover {
    color: var(--secondary-color-2);
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--primary-color);
    color: var(--text-white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--secondary-color-1);
}

.footer-text {
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.8);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--secondary-color-1);
    transform: translateX(5px);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-copyright {
    margin-bottom: 10px;
    color: rgba(255, 255, 255, 0.8);
}

.footer-disclaimer {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
}

/* ===================================
   Responsive Design - Mobile
   =================================== */
@media screen and (max-width: 768px) {
    :root {
        --header-height: 60px;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    /* Navigation */
    .nav-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: -100%;
        width: 100%;
        background: var(--bg-white);
        box-shadow: var(--shadow-md);
        transition: var(--transition);
        padding: 30px 0;
    }
    
    .nav-menu.show {
        left: 0;
    }
    
    .nav-list {
        flex-direction: column;
        gap: 0;
    }
    
    .nav-link {
        display: block;
        padding: 15px 30px;
        border-bottom: 1px solid var(--bg-light);
    }
    
    .nav-link::after {
        display: none;
    }
    
    /* Hero */
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1.3rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .hero-tags {
        gap: 10px;
    }
    
    .tag {
        font-size: 0.85rem;
        padding: 8px 15px;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    /* Grid layouts */
    .news-grid,
    .gallery-grid,
    .guide-grid {
        grid-template-columns: 1fr;
    }
    
    .reviews-carousel {
        grid-template-columns: 1fr;
    }
    
    .reviews-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Chapters */
    .chapters-timeline::before {
        left: 15px;
    }
    
    .chapter-item {
        padding-left: 60px;
    }
    
    .chapter-marker {
        left: 2px;
        width: 28px;
        height: 28px;
    }
    
    .chapter-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .chapter-title {
        font-size: 1.2rem;
    }
    
    /* Versions */
    .version-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .version-meta {
        flex-direction: column;
        gap: 10px;
    }
    
    /* FAQ */
    .faq-answer > div {
        padding: 0 20px 20px 20px;
    }
    
    /* Lightbox */
    .lightbox-prev,
    .lightbox-next {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
    
    .lightbox-prev {
        left: 10px;
    }
    
    .lightbox-next {
        right: 10px;
    }
    
    /* Back to top */
    .back-to-top {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
        font-size: 1rem;
    }
}

/* ===================================
   Small mobile devices
   =================================== */
@media screen and (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .btn {
        padding: 12px 25px;
        font-size: 1rem;
    }
    
    .reviews-stats {
        grid-template-columns: 1fr;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
}