/* 全局样式重置和基础设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 夏日配色方案 */
    --primary-color: #ff6b6b;
    --primary-light: #ff8e8e;
    --primary-dark: #e55555;
    --secondary-color: #4ecdc4;
    --secondary-light: #6ee0d9;
    --secondary-dark: #3db8b0;
    --accent-color: #45b7d1;
    --accent-light: #6bc5db;
    --accent-dark: #3498bd;
    --warm-orange: #ffa726;
    --sunny-yellow: #ffeb3b;
    --fresh-green: #66bb6a;
    
    /* 背景渐变 */
    --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --hero-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --card-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    
    /* 中性色 */
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --text-light: #bdc3c7;
    --white: #ffffff;
    --light-bg: #f8f9fa;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    
    /* 阴影 */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.1);
    
    /* 边框圆角 */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    
    /* 过渡效果 */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

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

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h2 {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: -2px;
    line-height: 1.2;
}

.nav-logo span {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 400;
    line-height: 1;
}

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

.nav-menu a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

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

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

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: var(--transition);
    border-radius: 2px;
}

/* 英雄区域 */
.hero {
    position: relative;
    min-height: 70vh;
    display: flex;
    align-items: center;
    padding-top: 70px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--hero-gradient);
    opacity: 0.9;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
}

.hero-content {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-text {
    text-align: center;
    max-width: 600px;
}

.hero-title {
    margin-bottom: 1rem;
}

.title-main {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    color: var(--white);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    margin-bottom: 0.3rem;
}

.title-sub {
    display: block;
    font-size: 1.3rem;
    font-weight: 300;
    color: rgba(255,255,255,0.9);
    font-style: italic;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.9);
    margin-bottom: 1.5rem;
    font-weight: 400;
}

.hero-description {
    margin-bottom: 1.8rem;
}

.hero-description p {
    font-size: 1rem;
    color: rgba(255,255,255,0.85);
    line-height: 1.7;
    margin-bottom: 0;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
    text-align: justify;
}

.hero-highlights {
    display: flex;
    flex-direction: row;
    gap: 0.8rem;
    margin-bottom: 2rem;
    flex-wrap: nowrap;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 0.8rem;
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255,255,255,0.2);
    transition: var(--transition);
    flex: 1;
    min-width: 0;
    white-space: nowrap;
}

.highlight-item:hover {
    background: rgba(255,255,255,0.15);
    transform: translateX(5px);
}

.highlight-item i {
    font-size: 1.1rem;
    color: var(--sunny-yellow);
    text-shadow: 0 0 10px rgba(255,235,59,0.5);
}

.highlight-item span {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.9);
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
}



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

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: var(--transition);
}

.btn:hover::before {
    left: 100%;
}

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

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

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

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



@keyframes float {
    0%, 100% { transform: translate(-50%, -50%) translateY(0px); }
    50% { transform: translate(-50%, -50%) translateY(-10px); }
}

/* 部分样式 */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    position: relative;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* 关于我们部分 */
.about {
    padding: 6rem 0;
    background: var(--white);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.highlight-box {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    margin-bottom: 2rem;
    box-shadow: var(--shadow-lg);
}

.highlight-box h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.story-section, .dlc-info {
    margin-bottom: 2rem;
}

.story-section h3, .dlc-info h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.story-highlight {
    color: var(--primary-color);
    font-weight: 600;
    font-style: italic;
}

.dlc-info ul {
    list-style: none;
    margin-bottom: 1rem;
}

.dlc-info li {
    padding: 0.5rem 0;
    position: relative;
    padding-left: 1.5rem;
}

.dlc-info li::before {
    content: '✨';
    position: absolute;
    left: 0;
    top: 0.5rem;
}

.value-proposition {
    background: var(--gray-100);
    padding: 1rem;
    border-radius: var(--radius-md);
    border-left: 4px solid var(--secondary-color);
    font-weight: 600;
    color: var(--secondary-dark);
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.stat-item {
    text-align: center;
    padding: 2rem;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-light));
    color: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* 功能特色部分 */
.features {
    padding: 6rem 0;
    background: var(--gray-100);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.feature-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 1px solid var(--gray-200);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-card h3 {
    font-size: 1.3rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-weight: 600;
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 版本详情部分 */
.version-details {
    padding: 4rem 0;
    background: var(--white);
}

.version-card {
    max-width: 800px;
    margin: 0 auto;
    background: linear-gradient(135deg, var(--warm-orange), #ff7043);
    color: var(--white);
    padding: 3rem;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.version-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.warning-notice {
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-top: 1.5rem;
    border: 1px solid rgba(255,255,255,0.2);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.warning-icon {
    font-size: 1.2rem;
}

/* 常见问题部分 */
.faq {
    padding: 6rem 0;
    background: var(--gray-100);
}

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

.faq-item {
    background: var(--white);
    border-radius: var(--radius-lg);
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: var(--transition);
}

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

.faq-question {
    padding: 2rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--gray-100);
}

.faq-question h3 {
    margin: 0;
    color: var(--text-primary);
    font-size: 1.2rem;
    font-weight: 600;
}

.faq-toggle {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: bold;
    transition: var(--transition);
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0;
    color: var(--text-secondary);
    line-height: 1.6;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease;
    opacity: 0;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding: 0 2rem 2rem;
    opacity: 1;
}

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

/* 用户评价部分 */
.reviews {
    padding: 6rem 0;
    background: var(--white);
}

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

.review-card {
    background: var(--gray-100);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border-left: 4px solid var(--secondary-color);
}

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

.review-header {
    margin-bottom: 1.5rem;
}

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

.reviewer-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.reviewer-details h4 {
    margin: 0 0 0.5rem 0;
    color: var(--text-primary);
    font-weight: 600;
}

.rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.stars {
    font-size: 0.9rem;
}

.rating-text {
    font-weight: 600;
    color: var(--accent-color);
}

.review-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-style: italic;
    margin: 0;
}

/* 页脚 */
.footer {
    background: linear-gradient(135deg, var(--text-primary) 0%, #34495e 100%);
    color: var(--white);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

/* 品牌区域 */
.brand-section {
    max-width: 280px;
}

.footer-logo h3 {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.2rem;
    line-height: 1.2;
}

.footer-logo span {
    font-size: 0.9rem;
    color: var(--text-light);
    font-weight: 300;
    font-style: italic;
}

.brand-description {
    color: var(--text-light);
    margin: 1rem 0 1.5rem 0;
    line-height: 1.5;
}

.social-links {
    display: flex;
    gap: 0.8rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    text-decoration: none;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
}

.social-link:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(255,107,107,0.3);
}

/* 页脚通用样式 */
.footer-section h4 {
    margin-bottom: 1.5rem;
    color: var(--white);
    font-size: 1.1rem;
    font-weight: 600;
    position: relative;
}

.footer-section h4::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--secondary-color);
    border-radius: 1px;
}

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

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

.footer-links a {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.95rem;
    position: relative;
    padding-left: 0;
}

.footer-links a:hover {
    color: var(--primary-color);
    padding-left: 8px;
}

.footer-links a::before {
    content: '→';
    position: absolute;
    left: -15px;
    opacity: 0;
    transition: var(--transition);
}

.footer-links a:hover::before {
    opacity: 1;
    left: -10px;
}

/* 帮助中心链接特殊样式 */
.help-link:hover {
    color: var(--accent-color) !important;
}

/* 友情链接特殊样式 */
.friend-link:hover {
    color: var(--secondary-color) !important;
}



/* 底部版权信息 */
.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: var(--text-light);
    gap: 2rem;
}

.copyright-left, .copyright-right {
    flex: 1;
}

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

.footer-bottom p {
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    line-height: 1.4;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(255,255,255,0.95);
        backdrop-filter: blur(10px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: 2rem;
        transition: var(--transition);
        gap: 2rem;
    }
    
    .nav-menu a {
        justify-content: center;
        padding: 0.8rem 1.5rem;
        border-radius: var(--radius-md);
        min-width: 150px;
        text-align: center;
    }
    
    .nav-menu a:hover {
        background: var(--gray-100);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero-content {
        flex-direction: column;
    }
    
    .title-main {
        font-size: 2.5rem;
    }
    
    .title-sub {
        font-size: 1.2rem;
    }
    
    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .about-stats {
        flex-direction: row;
        justify-content: space-around;
    }
    
    .stat-item {
        flex: 1;
        margin: 0 0.5rem;
        padding: 1.5rem 1rem;
    }
    
    .stat-number {
        font-size: 1.8rem;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .reviews-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: left;
    }
    
    .brand-section {
        max-width: none;
        text-align: center;
        margin-bottom: 1rem;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .copyright-right {
        text-align: center;
    }
    
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 18px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-content {
        padding: 0 15px;
    }
    
    .title-main {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-description p {
        font-size: 0.9rem;
        line-height: 1.6;
    }
    
    .hero-highlights {
        gap: 0.4rem;
        margin-bottom: 1.5rem;
    }
    
    .highlight-item {
        padding: 0.5rem 0.6rem;
        gap: 0.3rem;
    }
    
    .highlight-item i {
        font-size: 1rem;
    }
    
    .highlight-item span {
        font-size: 0.75rem;
    }
    

    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    .about-stats {
        flex-direction: row;
        justify-content: space-between;
        gap: 0.5rem;
    }
    
    .stat-item {
        margin: 0;
        flex: 1;
        min-width: 0;
        padding: 1rem 0.5rem;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
    
    .stat-label {
        font-size: 0.8rem;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .feature-card, .review-card {
        padding: 2rem 1.5rem;
    }
    
    .faq-question {
        padding: 1.5rem;
    }
    
    .faq-answer {
        padding: 0;
    }
    
    .faq-item.active .faq-answer {
        padding: 0 1.5rem 1.5rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(45deg, var(--primary-color), var(--primary-light));
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 20px;
    font-weight: bold;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

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

.back-to-top:hover {
    background: linear-gradient(45deg, var(--primary-dark), var(--primary-color));
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.back-to-top:active {
    transform: scale(0.95);
}

.back-to-top i {
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-3px);
    }
    60% {
        transform: translateY(-1px);
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-400);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-500);
} 

/* 页面头部样式 */
.page-header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    padding: 8rem 0 4rem;
    position: relative;
    overflow: hidden;
}

.page-header-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 100" fill="rgba(255,255,255,0.1)"><polygon points="0,0 1000,0 1000,100 500,80 0,100"/></svg>');
    background-size: cover;
    background-position: bottom;
}

.page-header-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--white);
}

.page-header h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.page-header p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* 面包屑导航 */
.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.breadcrumb a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    transition: var(--transition);
}

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

.breadcrumb span {
    color: rgba(255,255,255,0.6);
}

/* 页面内容区域 */
.page-content {
    padding: 4rem 0;
    background: var(--bg-color);
}

/* FAQ页面样式 */
.faq-sections {
    max-width: 800px;
    margin: 0 auto;
}

.faq-category {
    margin-bottom: 3rem;
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
}

.faq-category h2 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-light);
}

/* 用户手册页面样式 */
.manual-sections {
    max-width: 900px;
    margin: 0 auto;
}

.manual-category {
    margin-bottom: 3rem;
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
}

.manual-category h2 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-light);
}

.manual-content h3 {
    color: var(--text-primary);
    margin: 1.5rem 0 1rem 0;
    font-size: 1.2rem;
}

.manual-content ol,
.manual-content ul {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

.manual-content li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

/* 控制键样式 */
.control-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.control-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--gray-50);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-color);
}

.control-item kbd {
    background: var(--primary-color);
    color: var(--white);
    padding: 0.3rem 0.6rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    min-width: 80px;
    text-align: center;
}

.control-item span {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 提示框样式 */
.tip-box {
    background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-left: 4px solid var(--primary-color);
}

.tip-box h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

/* 快捷键表格 */
.shortcut-table {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.5rem;
    margin: 1.5rem 0;
}

.shortcut-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 1rem;
    background: var(--gray-50);
    border-radius: var(--radius-sm);
}

.shortcut-row .key {
    background: var(--primary-color);
    color: var(--white);
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-xs);
    font-size: 0.8rem;
    font-weight: 600;
}

.shortcut-row .desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* 问题解决方案样式 */
.problem-solution {
    background: var(--gray-50);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-left: 4px solid var(--accent-color);
}

.problem-solution h4 {
    color: var(--accent-color);
    margin-bottom: 1rem;
}

/* 隐私政策和服务条款页面样式 */
.policy-content,
.terms-content,
.copyright-content {
    max-width: 800px;
    margin: 0 auto;
}

.policy-meta,
.terms-meta {
    background: var(--primary-light);
    color: var(--white);
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    margin-bottom: 2rem;
    text-align: center;
}

.policy-section,
.terms-section,
.copyright-section {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-md);
}

.policy-section h2,
.terms-section h2,
.copyright-section h2 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-light);
}

.policy-section h3,
.terms-section h3,
.copyright-section h3 {
    color: var(--text-primary);
    margin: 1.5rem 0 1rem 0;
    font-size: 1.2rem;
}

.policy-section h4,
.terms-section h4,
.copyright-section h4 {
    color: var(--accent-color);
    margin: 1rem 0 0.5rem 0;
    font-size: 1.1rem;
}

/* 信息类型样式 */
.info-type,
.usage-purpose,
.sharing-scenario,
.security-measure,
.user-right,
.cookie-type {
    background: var(--gray-50);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin: 1rem 0;
    border-left: 4px solid var(--primary-color);
}

/* 年龄警告样式 */
.age-warning,
.content-warning,
.age-restriction {
    background: linear-gradient(135deg, #ff6b6b, #ff8e8e);
    color: var(--white);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin: 1rem 0;
    border-left: 4px solid #ff4757;
}

.age-warning h3,
.content-warning h3,
.age-restriction h3 {
    color: var(--white) !important;
    margin-bottom: 1rem;
}

/* 免责声明框 */
.disclaimer-box {
    background: #fff3cd;
    border: 1px solid #ffeaa7;
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin: 1rem 0;
}

.disclaimer-box h3 {
    color: #856404 !important;
}

/* 联系卡片样式 */
.contact-details,
.contact-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.contact-item,
.contact-card {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--gray-50);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-color);
}

.contact-item i,
.contact-card i {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-top: 0.2rem;
}

.contact-item div,
.contact-card div {
    flex: 1;
}

.contact-item strong,
.contact-card h4 {
    display: block;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.contact-item p,
.contact-card p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.9rem;
}

/* 联系网格样式 */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

/* 版权详情样式 */
.copyright-details {
    background: var(--gray-50);
    padding: 1rem;
    border-radius: var(--radius-sm);
    margin: 1rem 0;
}

.copyright-details p {
    margin: 0.5rem 0;
}

/* 商标信息样式 */
.trademark-info {
    background: var(--primary-light);
    color: var(--white);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    margin: 1rem 0;
}

/* 使用规则样式 */
.usage-rules,
.forbidden-usage {
    margin: 1rem 0;
}

.usage-rules {
    border-left: 4px solid var(--success-color);
    background: #f0fdf4;
    padding: 1.5rem;
    border-radius: var(--radius-md);
}

.forbidden-usage {
    border-left: 4px solid var(--error-color);
    background: #fef2f2;
    padding: 1.5rem;
    border-radius: var(--radius-md);
}

.usage-rules h3 {
    color: var(--success-color) !important;
}

.forbidden-usage h3 {
    color: var(--error-color) !important;
}

/* 用户生成内容样式 */
.ugc-rights,
.ugc-guidelines {
    background: var(--accent-light);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin: 1rem 0;
    border-left: 4px solid var(--accent-color);
}

.ugc-rights h3,
.ugc-guidelines h3 {
    color: var(--accent-color) !important;
}

/* DMCA通知样式 */
.dmca-notice,
.counter-notice {
    background: var(--gray-50);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin: 1rem 0;
    border-left: 4px solid #6c757d;
}

/* 免责声明样式 */
.disclaimer,
.liability-limit {
    background: #fff3cd;
    border: 1px solid #ffeaa7;
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin: 1rem 0;
}

.disclaimer h3,
.liability-limit h3 {
    color: #856404 !important;
}

/* 联系信息样式 */
.contact-info {
    background: var(--primary-light);
    color: var(--white);
    border-radius: var(--radius-md);
    padding: 2rem;
    margin: 1rem 0;
}

.contact-info p {
    margin-bottom: 1rem;
}

.response-time {
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-sm);
    padding: 1rem;
    margin-top: 1.5rem;
}

/* 更新日志样式 */
.update-log {
    background: var(--gray-50);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin: 1rem 0;
}

.version-info {
    background: var(--primary-color);
    color: var(--white);
    padding: 1rem;
    border-radius: var(--radius-sm);
    margin-top: 1rem;
}

.version-info p {
    margin: 0.3rem 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .page-header {
        padding: 6rem 0 3rem;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .page-header p {
        font-size: 1rem;
    }
    
    .faq-category,
    .manual-category,
    .policy-section,
    .terms-section,
    .copyright-section {
        padding: 1.5rem;
    }
    
    .control-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-details,
    .contact-cards,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .shortcut-table {
        grid-template-columns: 1fr;
    }
}