/* ===== CSS变量定义 ===== */
:root {
    --primary-color: #17120b;
    --secondary-color-1: #e8e4e1;
    --secondary-color-2: #838384;
    --secondary-color-3: #848c89;
    --text-dark: #1a1a1a;
    --text-light: #f5f5f5;
    --bg-light: #ffffff;
    --bg-dark: #0f0f0f;
    --accent-color: #d4af37;
    --transition: all 0.3s ease;
    --border-radius: 12px;
    --box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    --box-shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.15);
}

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

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

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

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

/* ===== 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-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    box-shadow: var(--box-shadow);
}

.back-to-top.visible {
    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: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
}

.navbar {
    padding: 15px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 30px;
    height: 25px;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
    transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

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

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

.nav-menu {
    display: flex;
    gap: 15px;
    align-items: center;
    flex-wrap: nowrap;
}

.nav-menu a {
    display: flex;
    align-items: center;
    gap: 5px;
    font-weight: 500;
    color: var(--primary-color);
    padding: 8px 12px;
    border-radius: 8px;
    transition: var(--transition);
    white-space: nowrap;
    font-size: 15px;
}

.nav-menu a:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color-2));
    color: var(--text-light);
    transform: translateY(-2px);
}

.nav-menu i {
    font-size: 14px;
}

/* ===== 英雄区 ===== */
.hero {
    margin-top: 80px;
    padding: 40px 0;
    background: linear-gradient(135deg, var(--secondary-color-1) 0%, #f8f8f8 100%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.hero-title {
    font-size: 48px;
    font-weight: 900;
    color: var(--primary-color);
    margin-bottom: 10px;
    line-height: 1.2;
}

.hero-title .subtitle {
    display: block;
    font-size: 32px;
    font-weight: 500;
    color: var(--secondary-color-2);
    margin-top: 5px;
}

.hero-description {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 25px;
    opacity: 0.9;
}

.game-info {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 20px;
}

.info-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: white;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--primary-color);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.info-badge i {
    font-size: 12px;
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
}

.feature-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color-2));
    color: var(--text-light);
    border-radius: 15px;
    font-size: 13px;
    font-weight: 500;
}

.feature-tag i {
    font-size: 11px;
}

.download-btn {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 16px 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color-2));
    color: var(--text-light);
    font-size: 18px;
    font-weight: 700;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.download-btn .btn-subtitle {
    font-size: 13px;
    font-weight: 400;
    opacity: 0.9;
}

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

.hero-image {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.hero-image img {
    width: 100%;
    height: auto;
    transition: var(--transition);
}

.hero-image:hover img {
    transform: scale(1.05);
}

/* ===== 通用区块标题 ===== */
.section-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 50px;
    text-align: center;
}

.section-title i {
    font-size: 32px;
}

/* ===== 最新动态 ===== */
.news {
    padding: 80px 0;
    background: white;
}

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

.news-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border: 1px solid var(--secondary-color-1);
}

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

.news-date {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--secondary-color-1);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 15px;
}

.news-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.news-content {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-dark);
    opacity: 0.85;
    margin-bottom: 20px;
}

.news-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color-2));
    color: var(--text-light);
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
}

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

/* ===== 媒体画廊 ===== */
.gallery {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--secondary-color-1) 0%, #f8f8f8 100%);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.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(23, 18, 11, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.gallery-overlay i {
    font-size: 48px;
    color: var(--text-light);
}

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

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

/* ===== 灯箱 ===== */
.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: 2000;
}

.lightbox.active {
    display: flex;
}

.lightbox-image {
    max-width: 90%;
    max-height: 90vh;
    border-radius: var(--border-radius);
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: absolute;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    transition: var(--transition);
}

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

.lightbox-close {
    top: 30px;
    right: 30px;
}

.lightbox-prev {
    left: 30px;
}

.lightbox-next {
    right: 30px;
}

/* ===== 用户评价 ===== */
.reviews {
    padding: 80px 0;
    background: white;
}

.reviews-stats {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 30px;
    margin-bottom: 50px;
    padding: 40px;
    background: linear-gradient(135deg, var(--secondary-color-1) 0%, #f8f8f8 100%);
    border-radius: var(--border-radius);
}

.rating-overview {
    text-align: center;
}

.rating-score {
    font-size: 64px;
    font-weight: 900;
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: 10px;
}

.rating-stars {
    color: var(--accent-color);
    font-size: 24px;
    margin-bottom: 8px;
}

.rating-count {
    font-size: 14px;
    color: var(--secondary-color-2);
}

.rating-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    flex: 1;
    justify-content: center;
}

.rating-tags .tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 18px;
    background: white;
    color: var(--primary-color);
    border-radius: 20px;
    font-weight: 500;
    font-size: 14px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.rating-tags .tag i {
    color: #4caf50;
    font-size: 12px;
}

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

.review-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--box-shadow);
    border: 1px solid var(--secondary-color-1);
}

.review-header {
    margin-bottom: 20px;
}

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

.reviewer-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color-2));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: 24px;
}

.reviewer-name {
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.review-stars {
    color: var(--accent-color);
    font-size: 14px;
}

.review-text {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-dark);
    opacity: 0.85;
}

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

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--secondary-color-2);
    opacity: 0.3;
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    opacity: 1;
    background: var(--primary-color);
}

/* ===== 游戏攻略 ===== */
.guide {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--secondary-color-1) 0%, #f8f8f8 100%);
}

.guide-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 50px;
}

.filter-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: white;
    color: var(--primary-color);
    border-radius: 25px;
    font-weight: 600;
    font-size: 15px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
}

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

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

.guide-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 35px;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border: 1px solid var(--secondary-color-1);
}

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

.guide-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color-2));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: 32px;
    margin-bottom: 20px;
}

.guide-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.guide-description {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-dark);
    opacity: 0.85;
    margin-bottom: 20px;
}

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

.difficulty {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
}

.difficulty.easy {
    color: #4caf50;
}

.difficulty.medium {
    color: #ff9800;
}

.difficulty.hard {
    color: #f44336;
}

.recommend {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--accent-color);
}

/* ===== 游戏章节 ===== */
.chapters {
    padding: 80px 0;
    background: white;
}

.chapters-timeline {
    position: relative;
    padding-left: 50px;
}

.chapters-timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color-2));
}

.chapter-item {
    position: relative;
    margin-bottom: 50px;
    padding-left: 50px;
}

.chapter-number {
    position: absolute;
    left: -35px;
    top: 0;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color-2));
    color: var(--text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 900;
    box-shadow: var(--box-shadow);
    z-index: 1;
}

.chapter-content {
    background: white;
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--box-shadow);
    border: 1px solid var(--secondary-color-1);
    transition: var(--transition);
}

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

.chapter-badge {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 10px;
}

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

.chapter-badge.character {
    background: linear-gradient(135deg, #9c27b0, #e91e63);
    color: var(--text-light);
}

.important-mark {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: #fff3cd;
    color: #856404;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 10px;
    margin-left: 10px;
}

.chapter-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.chapter-description {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-dark);
    opacity: 0.85;
    margin-bottom: 20px;
}

.chapter-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-dark);
    opacity: 0.8;
}

.detail-item i {
    color: var(--primary-color);
    font-size: 16px;
}

.mood-tag {
    font-weight: 600;
    color: var(--primary-color);
}

.chapter-item.important .chapter-content {
    border-left: 4px solid #ffc107;
}

/* ===== 版本历史 ===== */
.versions {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--secondary-color-1) 0%, #f8f8f8 100%);
}

.versions-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.version-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 35px;
    box-shadow: var(--box-shadow);
    border: 1px solid var(--secondary-color-1);
    transition: var(--transition);
}

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

.version-card.latest {
    border: 2px solid var(--primary-color);
    background: linear-gradient(135deg, rgba(23, 18, 11, 0.02) 0%, rgba(232, 228, 225, 0.3) 100%);
}

.version-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--secondary-color-1);
}

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

.version-number {
    font-size: 28px;
    font-weight: 900;
    color: var(--primary-color);
}

.version-badge {
    padding: 6px 14px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color-2));
    color: var(--text-light);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.version-date {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    color: var(--secondary-color-2);
    font-weight: 600;
}

.version-details {
    margin-bottom: 25px;
}

.version-details h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.version-details ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.version-details li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-dark);
    opacity: 0.85;
}

.version-details li i {
    margin-top: 3px;
    font-size: 14px;
}

.version-details li i.fa-plus-circle {
    color: #4caf50;
}

.version-details li i.fa-star {
    color: #ff9800;
}

.version-details li i.fa-wrench {
    color: #2196f3;
}

.version-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 20px;
    padding: 15px 0;
    font-size: 14px;
    color: var(--secondary-color-2);
}

.version-meta span {
    display: flex;
    align-items: center;
    gap: 8px;
}

.version-meta i {
    font-size: 16px;
}

.version-download {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 30px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color-2));
    color: var(--text-light);
    border-radius: 8px;
    font-weight: 700;
    font-size: 16px;
    transition: var(--transition);
}

.version-download:hover {
    transform: translateX(5px);
}

/* ===== 常见问题 ===== */
.faq {
    padding: 80px 0;
    background: white;
}

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

.faq-item {
    background: white;
    border-radius: var(--border-radius);
    border: 1px solid var(--secondary-color-1);
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 25px 30px;
    background: white;
    color: var(--primary-color);
    font-size: 18px;
    font-weight: 600;
    text-align: left;
    transition: var(--transition);
    cursor: pointer;
}

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

.faq-question span {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
}

.faq-question i.fa-chevron-down {
    font-size: 18px;
    transition: var(--transition);
}

.faq-item.active .faq-question i.fa-chevron-down {
    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 30px 25px;
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-dark);
    opacity: 0.85;
}

/* ===== 底部 ===== */
.footer {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color-2) 100%);
    color: var(--text-light);
    padding: 60px 0 30px;
}

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

.footer-section {
}

.footer-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-text {
    font-size: 14px;
    line-height: 1.8;
    opacity: 0.9;
}

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

.footer-links a {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    opacity: 0.9;
    transition: var(--transition);
}

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

.footer-links i {
    font-size: 12px;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-bottom p {
    font-size: 14px;
    opacity: 0.8;
    margin-bottom: 8px;
}

.footer-disclaimer {
    font-size: 12px;
    opacity: 0.6;
}

/* ===== 响应式设计 ===== */
@media (max-width: 968px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 280px;
        height: calc(100vh - 70px);
        background: white;
        flex-direction: column;
        padding: 30px 20px;
        gap: 15px;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
        transition: var(--transition);
        overflow-y: auto;
    }

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

    .nav-menu a {
        width: 100%;
        justify-content: flex-start;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-title .subtitle {
        font-size: 24px;
    }

    .section-title {
        font-size: 28px;
    }

    .section-title i {
        font-size: 24px;
    }

    .chapters-timeline {
        padding-left: 30px;
    }

    .chapter-item {
        padding-left: 30px;
    }

    .chapter-number {
        left: -30px;
        width: 50px;
        height: 50px;
        font-size: 20px;
    }

    .chapters-timeline::before {
        left: 15px;
    }
}

@media (max-width: 640px) {
    html {
        font-size: 14px;
    }

    .container {
        padding: 0 15px;
    }

    .hero {
        padding: 30px 0;
    }

    .hero-title {
        font-size: 28px;
    }

    .hero-title .subtitle {
        font-size: 20px;
    }

    .section-title {
        font-size: 24px;
        margin-bottom: 30px;
    }

    .news,
    .gallery,
    .reviews,
    .guide,
    .chapters,
    .versions,
    .faq {
        padding: 50px 0;
    }

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

    .reviews-stats {
        flex-direction: column;
        text-align: center;
        padding: 30px 20px;
    }

    .guide-filters {
        gap: 10px;
    }

    .filter-btn {
        padding: 10px 18px;
        font-size: 14px;
    }

    .chapter-details {
        grid-template-columns: 1fr;
    }

    .lightbox-close,
    .lightbox-prev,
    .lightbox-next {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }

    .lightbox-close {
        top: 15px;
        right: 15px;
    }

    .lightbox-prev {
        left: 15px;
    }

    .lightbox-next {
        right: 15px;
    }

    .back-to-top {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
        font-size: 18px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

/* ===== 页面内容通用样式 ===== */
.page-content {
    margin-top: 80px;
    padding: 60px 0;
    min-height: calc(100vh - 80px);
    background: white;
}

.page-header {
    text-align: center;
    margin-bottom: 50px;
}

.page-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    font-size: 40px;
    font-weight: 900;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.page-title i {
    font-size: 36px;
}

.page-description {
    font-size: 16px;
    color: var(--secondary-color-2);
}

.content-wrapper {
    max-width: 1000px;
    margin: 0 auto;
}

/* ===== 帮助横幅 ===== */
.help-banner {
    background: linear-gradient(135deg, var(--secondary-color-1) 0%, #f8f8f8 100%);
    border-radius: var(--border-radius);
    padding: 40px;
    margin-top: 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 30px;
}

.help-content {
    display: flex;
    align-items: center;
    gap: 20px;
    flex: 1;
}

.help-content i {
    font-size: 48px;
    color: var(--accent-color);
}

.help-content h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.help-content p {
    font-size: 15px;
    color: var(--text-dark);
    opacity: 0.85;
}

.help-actions {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.btn-primary, .btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 15px;
    transition: var(--transition);
}

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

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

.btn-primary:hover, .btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: var(--box-shadow);
}

/* ===== 用户手册样式 ===== */
.manual-content {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 40px;
    max-width: 1200px;
}

.manual-sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.manual-nav {
    background: white;
    border-radius: var(--border-radius);
    padding: 25px;
    box-shadow: var(--box-shadow);
    border: 1px solid var(--secondary-color-1);
}

.manual-nav h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.manual-nav ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.manual-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    color: var(--text-dark);
    border-radius: 8px;
    transition: var(--transition);
    font-size: 14px;
}

.manual-nav a:hover {
    background: var(--secondary-color-1);
    color: var(--primary-color);
    transform: translateX(5px);
}

.manual-nav i {
    font-size: 10px;
}

.manual-main {
    flex: 1;
}

.manual-section {
    margin-bottom: 50px;
}

.manual-section h2 {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 3px solid var(--secondary-color-1);
}

.manual-section h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
    margin: 25px 0 15px;
}

.manual-block {
    background: white;
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--secondary-color-1);
}

.manual-block p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-dark);
    opacity: 0.85;
    margin-bottom: 15px;
}

.manual-block ul, .manual-block ol {
    margin: 15px 0;
    padding-left: 25px;
}

.manual-block li {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-dark);
    opacity: 0.85;
    margin-bottom: 8px;
}

.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    display: flex;
    gap: 10px;
    align-items: flex-start;
}

.feature-list i {
    color: #4caf50;
    margin-top: 4px;
}

.requirement-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.requirement-card {
    background: var(--secondary-color-1);
    border-radius: var(--border-radius);
    padding: 25px;
}

.requirement-card h4 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.steps-list {
    list-style: none;
    counter-reset: step-counter;
    padding: 0;
}

.steps-list li {
    counter-increment: step-counter;
    position: relative;
    padding-left: 50px;
    margin-bottom: 25px;
}

.steps-list li::before {
    content: counter(step-counter);
    position: absolute;
    left: 0;
    top: 0;
    width: 35px;
    height: 35px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color-2));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.tip-box, .warning-box {
    display: flex;
    gap: 15px;
    padding: 20px;
    border-radius: var(--border-radius);
    margin: 20px 0;
}

.tip-box {
    background: #e8f5e9;
    border-left: 4px solid #4caf50;
}

.warning-box {
    background: #fff3cd;
    border-left: 4px solid #ffc107;
}

.tip-box i, .warning-box i {
    font-size: 24px;
    margin-top: 2px;
}

.tip-box i {
    color: #4caf50;
}

.warning-box i {
    color: #ff9800;
}

.interface-list {
    list-style: none;
    padding: 0;
}

.interface-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 12px;
}

.interface-list i {
    color: var(--primary-color);
    margin-top: 4px;
    font-size: 18px;
}

.control-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

.control-table th, .control-table td {
    padding: 12px 15px;
    text-align: left;
    border: 1px solid var(--secondary-color-1);
}

.control-table th {
    background: var(--secondary-color-1);
    font-weight: 700;
    color: var(--primary-color);
}

.control-table td {
    font-size: 14px;
}

.control-table kbd {
    display: inline-block;
    padding: 3px 8px;
    background: var(--secondary-color-1);
    border: 1px solid var(--secondary-color-2);
    border-radius: 4px;
    font-family: monospace;
    font-size: 13px;
    font-weight: 600;
}

.tips-list {
    list-style: none;
    padding: 0;
}

.tips-list li {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    margin-bottom: 15px;
}

.tips-list i {
    color: var(--accent-color);
    margin-top: 4px;
}

.manual-footer {
    margin-top: 50px;
    padding-top: 30px;
    border-top: 2px solid var(--secondary-color-1);
}

.help-links h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
    text-align: center;
}

.link-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

/* ===== 技术支持样式 ===== */
.support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-bottom: 50px;
}

.support-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 30px;
    text-align: center;
    box-shadow: var(--box-shadow);
    border: 1px solid var(--secondary-color-1);
    transition: var(--transition);
}

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

.support-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color-2));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 32px;
}

.support-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.support-card p {
    font-size: 14px;
    color: var(--text-dark);
    opacity: 0.85;
}

.tech-section {
    margin-bottom: 50px;
}

.tech-section h2 {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.tech-problem {
    background: white;
    border-radius: var(--border-radius);
    padding: 30px;
    margin-bottom: 25px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--secondary-color-1);
}

.tech-problem h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.tech-problem h3 i {
    color: #f44336;
}

.solution h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary-color);
    margin: 15px 0 10px;
}

.solution ul, .solution ol {
    margin: 10px 0;
    padding-left: 25px;
}

.solution li {
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 8px;
}

.download-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.download-item {
    display: flex;
    gap: 20px;
    background: white;
    border-radius: var(--border-radius);
    padding: 25px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--secondary-color-1);
}

.download-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color-2));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 28px;
    flex-shrink: 0;
}

.download-info {
    flex: 1;
}

.download-info h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.download-info p {
    font-size: 14px;
    color: var(--text-dark);
    opacity: 0.85;
    margin-bottom: 12px;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--secondary-color-1);
    color: var(--primary-color);
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
}

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

.diagnostic-commands {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.command-item {
    background: white;
    border-radius: var(--border-radius);
    padding: 25px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--secondary-color-1);
}

.command-item h4 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.command-item code {
    display: block;
    background: var(--secondary-color-1);
    padding: 12px 15px;
    border-radius: 6px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    margin: 12px 0;
    color: var(--primary-color);
    font-weight: 600;
}

.command-item p {
    font-size: 14px;
    color: var(--text-dark);
    opacity: 0.85;
    line-height: 1.6;
}

.contact-support {
    background: linear-gradient(135deg, var(--secondary-color-1) 0%, #f8f8f8 100%);
    border-radius: var(--border-radius);
    padding: 50px;
    margin: 50px 0;
}

.contact-header {
    text-align: center;
    margin-bottom: 40px;
}

.contact-header i {
    font-size: 48px;
    color: var(--accent-color);
    margin-bottom: 15px;
}

.contact-header h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.contact-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.contact-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 30px;
    text-align: center;
    box-shadow: var(--box-shadow);
}

.contact-card i {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.contact-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.contact-card p {
    font-size: 14px;
    color: var(--text-dark);
    opacity: 0.85;
    margin-bottom: 20px;
}

.tech-tips {
    background: white;
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--secondary-color-1);
}

.tech-tips h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.tech-tips ul {
    margin: 0;
    padding-left: 25px;
}

.tech-tips li {
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 10px;
}

/* ===== 问题反馈样式 ===== */
.feedback-intro {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-bottom: 50px;
}

.intro-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 30px;
    text-align: center;
    box-shadow: var(--box-shadow);
    border: 1px solid var(--secondary-color-1);
}

.intro-card i {
    font-size: 48px;
    color: var(--accent-color);
    margin-bottom: 20px;
}

.intro-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.intro-card p {
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-dark);
    opacity: 0.85;
}

.feedback-form-section {
    background: white;
    border-radius: var(--border-radius);
    padding: 40px;
    box-shadow: var(--box-shadow);
    border: 1px solid var(--secondary-color-1);
    margin-bottom: 50px;
}

.feedback-form-section h2 {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.feedback-form {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.form-group .required {
    color: #f44336;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 15px;
    border: 2px solid var(--secondary-color-1);
    border-radius: 8px;
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group small {
    font-size: 13px;
    color: var(--secondary-color-2);
    margin-top: 6px;
}

.file-upload {
    position: relative;
}

.file-upload input[type="file"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.file-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 30px;
    border: 2px dashed var(--secondary-color-1);
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.file-label:hover {
    border-color: var(--primary-color);
    background: var(--secondary-color-1);
}

.file-label i {
    font-size: 36px;
    color: var(--primary-color);
}

.form-tips {
    display: flex;
    gap: 15px;
    padding: 20px;
    background: var(--secondary-color-1);
    border-radius: 8px;
}

.form-tips i {
    font-size: 24px;
    color: var(--primary-color);
    margin-top: 2px;
}

.form-tips ul {
    margin: 10px 0 0;
    padding-left: 20px;
}

.form-tips li {
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 6px;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 15px;
    margin-top: 10px;
}

.feedback-guidelines {
    margin-bottom: 50px;
}

.feedback-guidelines h2 {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.guideline-section {
    background: white;
    border-radius: var(--border-radius);
    padding: 30px;
    margin-bottom: 25px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--secondary-color-1);
}

.guideline-section h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.guideline-section p {
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 12px;
}

.guideline-section ul {
    margin: 10px 0;
    padding-left: 25px;
}

.guideline-section li {
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 8px;
}

.example-box {
    background: white;
    border-radius: var(--border-radius);
    padding: 20px;
    margin: 15px 0;
    border-left: 4px solid;
}

.example-box.good {
    border-color: #4caf50;
    background: #e8f5e9;
}

.example-box.bad {
    border-color: #f44336;
    background: #ffebee;
}

.example-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 16px;
    margin-bottom: 12px;
}

.example-box.good .example-label {
    color: #4caf50;
}

.example-box.bad .example-label {
    color: #f44336;
}

.example-box p {
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 8px;
}

.example-note {
    font-style: italic;
    opacity: 0.8;
    margin-top: 10px;
}

.other-contact {
    margin-bottom: 50px;
}

.other-contact h2 {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 25px;
}

.contact-option {
    background: white;
    border-radius: var(--border-radius);
    padding: 30px;
    text-align: center;
    box-shadow: var(--box-shadow);
    border: 1px solid var(--secondary-color-1);
}

.contact-option i {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.contact-option h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.contact-option p {
    font-size: 14px;
    color: var(--text-dark);
    opacity: 0.85;
    margin-bottom: 20px;
}

.btn-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
}

.btn-link:hover {
    color: var(--secondary-color-2);
    transform: translateX(5px);
}

.thank-you-note {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    background: linear-gradient(135deg, var(--secondary-color-1) 0%, #f8f8f8 100%);
    border-radius: var(--border-radius);
    padding: 40px;
    text-align: center;
}

.thank-you-note i {
    font-size: 60px;
    color: #e91e63;
}

.thank-you-note h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

.thank-you-note p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-dark);
    opacity: 0.85;
    max-width: 700px;
}

/* ===== 法律文档页面样式 ===== */
.legal-page {
    background: var(--bg-light);
}

.legal-content {
    max-width: 900px;
}

.legal-notice {
    display: flex;
    gap: 15px;
    padding: 20px 25px;
    background: #e3f2fd;
    border-left: 4px solid #2196f3;
    border-radius: var(--border-radius);
    margin-bottom: 40px;
}

.legal-notice.warning {
    background: #fff3cd;
    border-left-color: #ffc107;
}

.legal-notice i {
    font-size: 24px;
    color: #2196f3;
    margin-top: 2px;
}

.legal-notice.warning i {
    color: #ffc107;
}

.legal-notice p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-dark);
    margin: 0;
}

.legal-section {
    background: white;
    border-radius: var(--border-radius);
    padding: 35px;
    margin-bottom: 30px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--secondary-color-1);
}

.legal-section h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--secondary-color-1);
}

.legal-section h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-color);
    margin: 25px 0 15px;
}

.legal-section p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.legal-section ul {
    margin: 15px 0;
    padding-left: 25px;
}

.legal-section li {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.legal-section a {
    color: #2196f3;
    text-decoration: underline;
}

.legal-section a:hover {
    color: var(--primary-color);
}

.acceptance-box, .copyright-box, .final-statement {
    background: var(--secondary-color-1);
    border-radius: var(--border-radius);
    padding: 25px;
    margin: 20px 0;
}

.copyright-notice-example {
    background: white;
    border-radius: 8px;
    padding: 20px;
    margin-top: 15px;
    text-align: center;
    border: 2px solid var(--primary-color);
}

.copyright-notice-example p {
    font-size: 14px;
    margin-bottom: 8px;
}

.final-statement {
    display: flex;
    gap: 20px;
}

.final-statement i {
    font-size: 36px;
    color: var(--primary-color);
    flex-shrink: 0;
}

.legal-footer {
    margin-top: 50px;
    padding-top: 30px;
    border-top: 2px solid var(--secondary-color-1);
}

.last-updated {
    text-align: center;
    font-size: 14px;
    color: var(--secondary-color-2);
    margin-bottom: 30px;
}

.related-policies {
    background: white;
    border-radius: var(--border-radius);
    padding: 25px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--secondary-color-1);
}

.related-policies h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
    text-align: center;
}

.related-policies ul {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    list-style: none;
    padding: 0;
    margin: 0;
}

.related-policies li {
    margin: 0;
}

.related-policies a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--secondary-color-1);
    color: var(--primary-color);
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    text-decoration: none;
    transition: var(--transition);
}

.related-policies a:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

/* ===== 响应式调整（新增页面） ===== */
@media (max-width: 968px) {
    .manual-content {
        grid-template-columns: 1fr;
    }

    .manual-sidebar {
        position: static;
    }

    .help-banner {
        flex-direction: column;
        text-align: center;
    }

    .help-content {
        flex-direction: column;
        text-align: center;
    }

    .help-actions {
        justify-content: center;
    }
}

@media (max-width: 640px) {
    .page-content {
        padding: 40px 0;
    }

    .page-title {
        font-size: 28px;
    }

    .page-title i {
        font-size: 24px;
    }

    .support-grid,
    .contact-methods,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .feedback-intro {
        grid-template-columns: 1fr;
    }

    .feedback-form-section {
        padding: 25px;
    }

    .form-actions {
        flex-direction: column;
    }

    .form-actions button {
        width: 100%;
    }

    .legal-section {
        padding: 25px;
    }

    .final-statement {
        flex-direction: column;
        text-align: center;
    }
}

/* ===== 文章列表页样式 ===== */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.article-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    border: 1px solid var(--secondary-color-1);
    transition: var(--transition);
    position: relative;
}

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

.article-card.featured {
    grid-column: span 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.article-badge {
    position: absolute;
    top: 15px;
    left: 15px;
    background: linear-gradient(135deg, #ff6b6b, #ee5a6f);
    color: white;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    z-index: 2;
}

.article-image {
    position: relative;
    overflow: hidden;
    height: 220px;
}

.article-card.featured .article-image {
    height: 100%;
}

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

.article-card:hover .article-image img {
    transform: scale(1.1);
}

.article-category {
    position: absolute;
    bottom: 15px;
    right: 15px;
    background: rgba(23, 18, 11, 0.9);
    color: white;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.article-content {
    padding: 25px;
}

.article-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 15px;
    font-size: 13px;
    color: var(--secondary-color-2);
}

.article-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.article-meta i {
    font-size: 12px;
}

.article-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.article-title a {
    color: var(--primary-color);
    transition: var(--transition);
}

.article-title a:hover {
    color: var(--secondary-color-2);
}

.article-excerpt {
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-dark);
    opacity: 0.85;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 15px;
}

.article-tags .tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    background: var(--secondary-color-1);
    color: var(--primary-color);
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
}

.article-tags .tag i {
    font-size: 9px;
}

.article-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
}

.article-link:hover {
    color: var(--secondary-color-2);
    transform: translateX(5px);
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    padding: 30px 0;
}

.page-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
}

.page-btn:hover:not(:disabled) {
    background: var(--primary-color);
    color: white;
}

.page-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.page-info {
    font-size: 14px;
    color: var(--text-dark);
    font-weight: 500;
}

/* ===== 文章详情页样式 ===== */
.article-page {
    margin-top: 80px;
    padding: 40px 0 80px;
    background: #f8f8f8;
}

.article-header-section {
    margin-bottom: 30px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--secondary-color-2);
    margin-bottom: 20px;
}

.breadcrumb a {
    color: var(--secondary-color-2);
    transition: var(--transition);
}

.breadcrumb a:hover {
    color: var(--primary-color);
}

.breadcrumb i {
    font-size: 10px;
}

.article-main-title {
    font-size: 36px;
    font-weight: 900;
    color: var(--primary-color);
    line-height: 1.3;
    margin-bottom: 20px;
}

.article-header-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 25px;
    font-size: 14px;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--secondary-color-2);
}

.meta-item i {
    font-size: 14px;
}

.category-tag {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color-2));
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-weight: 600;
}

.article-body {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.article-cover {
    width: 100%;
    height: 400px;
    overflow: hidden;
}

.article-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.article-content-wrapper {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 40px;
    padding: 40px;
}

.article-sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.sidebar-card {
    background: var(--secondary-color-1);
    border-radius: var(--border-radius);
    padding: 20px;
    margin-bottom: 20px;
}

.sidebar-card h3 {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid white;
}

.article-toc {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.article-toc a {
    display: block;
    padding: 8px 12px;
    color: var(--text-dark);
    border-left: 3px solid transparent;
    transition: var(--transition);
    font-size: 14px;
}

.article-toc a:hover {
    color: var(--primary-color);
    border-left-color: var(--primary-color);
    background: white;
    border-radius: 4px;
}

.sidebar-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.sidebar-tag {
    display: inline-block;
    padding: 6px 12px;
    background: white;
    color: var(--primary-color);
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.share-buttons {
    display: flex;
    gap: 10px;
}

.share-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: white;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: var(--transition);
}

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

.article-main-content {
    flex: 1;
    min-width: 0;
}

.content-section {
    margin-bottom: 40px;
}

.content-section h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 3px solid var(--secondary-color-1);
}

.content-section h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary-color);
    margin: 25px 0 15px;
}

.content-section p {
    font-size: 16px;
    line-height: 1.9;
    color: var(--text-dark);
    margin-bottom: 18px;
}

.content-section ul,
.content-section ol {
    margin: 15px 0;
    padding-left: 30px;
}

.content-section li {
    font-size: 16px;
    line-height: 1.9;
    margin-bottom: 10px;
}

.content-section a {
    color: #2196f3;
    text-decoration: underline;
}

.content-section a:hover {
    color: var(--primary-color);
}

.highlight-quote {
    background: linear-gradient(135deg, rgba(33, 150, 243, 0.1), rgba(33, 150, 243, 0.05));
    border-left: 4px solid #2196f3;
    padding: 20px 25px;
    margin: 25px 0;
    border-radius: 8px;
}

.highlight-quote p {
    font-size: 17px;
    font-style: italic;
    color: var(--primary-color);
    margin: 0;
}

.highlight-quote footer {
    margin-top: 10px;
    font-size: 14px;
    color: var(--secondary-color-2);
}

.info-box {
    background: var(--secondary-color-1);
    border-radius: var(--border-radius);
    padding: 25px;
    margin: 25px 0;
}

.info-box h4 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.info-box ul {
    list-style: none;
    padding: 0;
}

.info-box li {
    padding: 8px 0;
    border-bottom: 1px solid white;
}

.info-box li:last-child {
    border-bottom: none;
}

.timeline-list {
    margin: 25px 0;
}

.timeline-item {
    position: relative;
    padding-left: 35px;
    margin-bottom: 30px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: 0;
    top: 5px;
    width: 14px;
    height: 14px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color-2));
    border-radius: 50%;
    border: 3px solid white;
    box-shadow: 0 0 0 3px var(--secondary-color-1);
}

.timeline-content h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.timeline-content ul {
    margin: 0;
}

.thank-you-box {
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.1), rgba(238, 90, 111, 0.1));
    border-radius: var(--border-radius);
    padding: 30px;
    text-align: center;
    margin: 30px 0;
}

.thank-you-box i {
    font-size: 48px;
    color: #e91e63;
    margin-bottom: 15px;
}

.thank-you-box h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.thank-you-box p {
    font-size: 16px;
    color: var(--text-dark);
}

.signature {
    text-align: right;
    font-style: italic;
    color: var(--secondary-color-2);
    margin-top: 30px;
    padding-top: 20px;
    border-top: 2px solid var(--secondary-color-1);
}

.article-footer-section {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 3px solid var(--secondary-color-1);
}

.article-tags-section {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 25px;
}

.tag-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    color: var(--primary-color);
}

.article-tag {
    display: inline-block;
    padding: 6px 14px;
    background: var(--secondary-color-1);
    color: var(--primary-color);
    border-radius: 15px;
    font-size: 13px;
    font-weight: 600;
}

.article-actions {
    display: flex;
    gap: 15px;
}

.action-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    border-radius: 25px;
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
}

.action-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.action-btn.liked {
    background: #e91e63;
    border-color: #e91e63;
    color: white;
}

.article-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 40px;
}

.nav-item {
    background: var(--secondary-color-1);
    border-radius: var(--border-radius);
    padding: 20px;
    transition: var(--transition);
}

.nav-item:not(.disabled):hover {
    background: white;
    box-shadow: var(--box-shadow);
}

.nav-item.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.nav-item.prev {
    text-align: left;
}

.nav-item.next {
    text-align: right;
}

.nav-label {
    display: block;
    font-size: 12px;
    color: var(--secondary-color-2);
    margin-bottom: 8px;
    text-transform: uppercase;
    font-weight: 600;
}

.nav-title {
    display: block;
    font-size: 16px;
    font-weight: 700;
    color: var(--primary-color);
    transition: var(--transition);
}

.nav-item:not(.disabled) a.nav-title:hover {
    color: var(--secondary-color-2);
}

/* ===== 响应式调整（文章页面） ===== */
@media (max-width: 968px) {
    .article-card.featured {
        grid-column: span 1;
        grid-template-columns: 1fr;
    }

    .article-card.featured .article-image {
        height: 220px;
    }

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

    .article-sidebar {
        position: static;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 15px;
    }

    .sidebar-card {
        margin-bottom: 0;
    }

    .article-nav {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .articles-grid {
        grid-template-columns: 1fr;
    }

    .article-main-title {
        font-size: 24px;
    }

    .article-header-meta {
        font-size: 12px;
    }

    .article-cover {
        height: 250px;
    }

    .article-content-wrapper {
        padding: 25px;
    }

    .article-sidebar {
        grid-template-columns: 1fr;
    }

    .content-section h2 {
        font-size: 22px;
    }

    .content-section h3 {
        font-size: 18px;
    }

    .article-actions {
        flex-direction: column;
    }

    .action-btn {
        width: 100%;
        justify-content: center;
    }
}

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

.news-card,
.gallery-item,
.review-card,
.guide-card,
.chapter-item,
.version-card,
.faq-item {
    animation: fadeIn 0.6s ease-out;
}