/* ===============================================
   CSS变量定义 - 主题配色
   =============================================== */
:root {
    /* 主色调 */
    --color-primary: #bb863c;
    --color-secondary: #59564f;
    --color-tertiary: #766254;
    --color-quaternary: #c0b9ae;
    
    /* 渐变色 */
    --gradient-primary: linear-gradient(135deg, #bb863c, #59564f);
    --gradient-secondary: linear-gradient(135deg, #766254, #c0b9ae);
    --gradient-hero: linear-gradient(135deg, rgba(187, 134, 60, 0.9), rgba(89, 86, 79, 0.8));
    
    /* 中性色 */
    --color-white: #ffffff;
    --color-black: #000000;
    --color-dark: #1a1a1a;
    --color-light: #f8f9fa;
    --color-gray-100: #f1f3f4;
    --color-gray-200: #e1e4e7;
    --color-gray-300: #c4c7cc;
    --color-gray-400: #a0a5ab;
    --color-gray-500: #6c757d;
    --color-gray-600: #495057;
    --color-gray-700: #343a40;
    --color-gray-800: #212529;
    
    /* 状态色 */
    --color-success: #28a745;
    --color-warning: #ffc107;
    --color-danger: #dc3545;
    --color-info: #17a2b8;
    
    /* 字体 */
    --font-primary: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
    --font-secondary: 'Roboto', 'Arial', sans-serif;
    
    /* 字体大小 */
    --font-size-xs: 0.75rem;    /* 12px */
    --font-size-sm: 0.875rem;   /* 14px */
    --font-size-base: 1rem;     /* 16px */
    --font-size-lg: 1.125rem;   /* 18px */
    --font-size-xl: 1.25rem;    /* 20px */
    --font-size-2xl: 1.5rem;    /* 24px */
    --font-size-3xl: 1.875rem;  /* 30px */
    --font-size-4xl: 2.25rem;   /* 36px */
    --font-size-5xl: 3rem;      /* 48px */
    
    /* 间距 */
    --spacing-xs: 0.25rem;   /* 4px */
    --spacing-sm: 0.5rem;    /* 8px */
    --spacing-md: 1rem;      /* 16px */
    --spacing-lg: 1.5rem;    /* 24px */
    --spacing-xl: 2rem;      /* 32px */
    --spacing-2xl: 3rem;     /* 48px */
    --spacing-3xl: 4rem;     /* 64px */
    --spacing-4xl: 6rem;     /* 96px */
    
    /* 边框半径 */
    --border-radius-sm: 0.25rem;   /* 4px */
    --border-radius-md: 0.375rem;  /* 6px */
    --border-radius-lg: 0.5rem;    /* 8px */
    --border-radius-xl: 0.75rem;   /* 12px */
    --border-radius-2xl: 1rem;     /* 16px */
    --border-radius-full: 9999px;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --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, 0.15);
    --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.25);
    
    /* 过渡动画 */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
    
    /* Z-index层级 */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* ===============================================
   通用样式
   =============================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-dark);
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    position: relative;
}

.section-title i {
    color: var(--color-primary);
    margin-right: var(--spacing-sm);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius-full);
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 500;
    text-decoration: none;
    border: none;
    border-radius: var(--border-radius-lg);
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.btn i {
    margin-right: var(--spacing-sm);
}

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

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

.btn-secondary {
    background: var(--color-gray-100);
    color: var(--color-gray-700);
    border: 2px solid var(--color-gray-300);
}

.btn-secondary:hover {
    background: var(--color-gray-200);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

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

.navbar {
    padding: var(--spacing-sm) 0;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.nav-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--color-dark);
    font-weight: 700;
    font-size: var(--font-size-lg);
    transition: var(--transition-normal);
}

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

.logo-icon {
    width: 32px;
    height: 32px;
    margin-right: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
}

.nav-menu {
    display: flex;
    list-style: none;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--color-gray-600);
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    transition: var(--transition-normal);
    position: relative;
}

.nav-link i {
    margin-right: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
    background: rgba(187, 134, 60, 0.1);
}

/* 汉堡菜单 */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--color-gray-600);
    margin: 3px 0;
    transition: var(--transition-fast);
    border-radius: var(--border-radius-full);
}

/* ===============================================
   英雄区样式
   =============================================== */
.hero {
    background: var(--gradient-hero);
    padding: calc(var(--spacing-3xl) + 70px) 0 var(--spacing-2xl);
    position: relative;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.hero-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.title-main {
    display: block;
    color: var(--color-white);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.title-sub {
    display: block;
    font-size: var(--font-size-lg);
    color: var(--color-quaternary);
    font-weight: 400;
    margin-top: var(--spacing-xs);
    opacity: 0.9;
}

.hero-description {
    font-size: var(--font-size-base);
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
    opacity: 0.9;
}

.hero-info {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.info-item {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.info-label {
    font-size: var(--font-size-sm);
    color: var(--color-quaternary);
    opacity: 0.8;
    margin-bottom: var(--spacing-xs);
}

.info-value {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-white);
}



.hero-actions {
    display: flex;
    gap: var(--spacing-md);
}

.download-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    border-radius: var(--border-radius-lg);
}

.hero-visual {
    position: relative;
}

.hero-image {
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-normal);
}

.hero-image:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.hero-image img {
    width: 100%;
    height: auto;
    display: block;
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(187, 134, 60, 0.2), rgba(89, 86, 79, 0.2));
    opacity: 0;
    transition: var(--transition-normal);
}

.hero-image:hover .image-overlay {
    opacity: 1;
}

/* ===============================================
   新闻动态区样式
   =============================================== */
.news-section {
    padding: var(--spacing-4xl) 0;
    background: var(--color-light);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.news-card {
    background: var(--color-white);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

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

.news-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-primary);
}

.news-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: var(--gradient-primary);
    color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--spacing-lg);
    width: fit-content;
}

.date-day {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    line-height: 1;
}

.date-month {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

.date-year {
    font-size: var(--font-size-xs);
    opacity: 0.8;
}

.news-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
    line-height: 1.4;
}

.news-summary {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.news-tags {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.tag {
    background: rgba(187, 134, 60, 0.1);
    color: var(--color-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

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

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

.news-link i {
    margin-right: var(--spacing-xs);
}

/* ===============================================
   媒体画廊样式
   =============================================== */
.gallery-section {
    padding: var(--spacing-4xl) 0;
    background: var(--color-white);
}

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

.gallery-item {
    position: relative;
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition-normal);
    aspect-ratio: 16/9;
}

.gallery-item:hover {
    transform: scale(1.02);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-normal);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    opacity: 0;
    transition: var(--transition-normal);
}

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

.gallery-overlay i {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-sm);
}

/* 画廊模态框 */
.gallery-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    z-index: var(--z-modal);
    align-items: center;
    justify-content: center;
}

.modal-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
}

.modal-image {
    max-width: 100%;
    max-height: 100%;
    border-radius: var(--border-radius-lg);
}

.modal-close {
    position: absolute;
    top: -40px;
    right: 0;
    color: var(--color-white);
    font-size: var(--font-size-3xl);
    cursor: pointer;
    transition: var(--transition-normal);
}

.modal-close:hover {
    color: var(--color-primary);
}

.modal-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 -50px;
    pointer-events: none;
}

.modal-prev, .modal-next {
    background: rgba(187, 134, 60, 0.8);
    color: var(--color-white);
    border: none;
    padding: var(--spacing-md);
    border-radius: var(--border-radius-full);
    cursor: pointer;
    transition: var(--transition-normal);
    pointer-events: all;
}

.modal-prev:hover, .modal-next:hover {
    background: var(--color-primary);
}



/* ===============================================
   版本历史样式
   =============================================== */
.versions-section {
    padding: var(--spacing-4xl) 0;
    background: var(--color-light);
}

.versions-timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.versions-timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gradient-primary);
}

.version-item {
    position: relative;
    margin-bottom: var(--spacing-3xl);
    padding-left: 80px;
}

.version-marker {
    position: absolute;
    left: 20px;
    top: 20px;
    width: 20px;
    height: 20px;
    background: var(--color-primary);
    border-radius: var(--border-radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: var(--font-size-sm);
    z-index: 2;
}

.version-content {
    background: var(--color-white);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.version-content:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.version-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.version-number {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-dark);
}

.version-date {
    color: var(--color-gray-500);
    font-size: var(--font-size-sm);
}

.version-badge {
    background: var(--gradient-primary);
    color: var(--color-white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.version-badge.latest {
    background: var(--color-success);
}

.version-features {
    list-style: none;
    margin-bottom: var(--spacing-lg);
}

.version-features li {
    display: flex;
    align-items: flex-start;
    margin-bottom: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-md);
    transition: var(--transition-normal);
}

.version-features li:hover {
    background: var(--color-gray-100);
}

.version-features li i {
    color: var(--color-success);
    margin-right: var(--spacing-sm);
    margin-top: 2px;
    flex-shrink: 0;
}

.version-meta {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.file-size, .platform {
    display: flex;
    align-items: center;
    color: var(--color-gray-600);
    font-size: var(--font-size-sm);
}

.file-size i, .platform i {
    margin-right: var(--spacing-xs);
    color: var(--color-primary);
}

/* ===============================================
   常见问题样式
   =============================================== */
.faq-section {
    padding: var(--spacing-4xl) 0;
    background: var(--color-white);
}

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

.faq-item {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--border-radius-xl);
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
    transition: var(--transition-normal);
}

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

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    cursor: pointer;
    background: var(--color-light);
    transition: var(--transition-normal);
}

.faq-question:hover {
    background: rgba(187, 134, 60, 0.05);
}

.faq-question h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-dark);
    margin: 0;
}

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

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

.faq-answer {
    padding: 0 var(--spacing-lg);
    max-height: 0;
    overflow: hidden;
    transition: var(--transition-slow);
    background: var(--color-white);
}

.faq-item.active .faq-answer {
    padding: var(--spacing-lg);
    max-height: 1000px;
}

.faq-answer p {
    color: var(--color-gray-600);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.faq-answer ul {
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.faq-answer li {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

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

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

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

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

/* ===============================================
   页脚样式
   =============================================== */
.footer {
    background: var(--color-gray-800);
    color: var(--color-white);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

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

.footer-section h3,
.footer-section h4 {
    margin-bottom: var(--spacing-lg);
}

.footer-title {
    display: flex;
    align-items: center;
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-white);
}

.footer-logo {
    width: 32px;
    height: 32px;
    margin-right: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
}

.footer-description {
    line-height: 1.6;
    opacity: 0.8;
    margin-bottom: var(--spacing-lg);
}

.footer-stats {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    align-items: center;
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

.stat-item i {
    margin-right: var(--spacing-xs);
    color: var(--color-primary);
}

.footer-subtitle {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-white);
}

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

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--color-gray-300);
    text-decoration: none;
    display: flex;
    align-items: center;
    transition: var(--transition-normal);
}

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

.footer-links a i {
    margin-right: var(--spacing-sm);
    width: 16px;
    text-align: center;
}

.footer-bottom {
    border-top: 1px solid var(--color-gray-700);
    padding-top: var(--spacing-lg);
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.copyright {
    display: flex;
    align-items: center;
    font-size: var(--font-size-sm);
    opacity: 0.7;
}

.copyright i {
    margin-right: var(--spacing-xs);
}

.footer-badges {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.badge {
    background: rgba(187, 134, 60, 0.2);
    color: var(--color-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-xs);
    display: flex;
    align-items: center;
}

.badge i {
    margin-right: var(--spacing-xs);
}

/* ===============================================
   页面头部样式 (新页面专用)
   =============================================== */
.page-header {
    background: var(--gradient-hero);
    padding: calc(var(--spacing-4xl) + 70px) 0 var(--spacing-3xl);
    position: relative;
    overflow: hidden;
}

.page-header::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="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
    pointer-events: none;
}

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

.page-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.page-title i {
    color: var(--color-primary);
    margin-right: var(--spacing-sm);
}

.page-description {
    font-size: var(--font-size-lg);
    line-height: 1.6;
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

.breadcrumb a {
    color: var(--color-white);
    text-decoration: none;
    transition: var(--transition-normal);
}

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

.breadcrumb .separator {
    color: var(--color-quaternary);
}

.breadcrumb .current {
    color: var(--color-primary);
    font-weight: 500;
}

/* ===============================================
   FAQ内容页面样式
   =============================================== */
.faq-content-section {
    padding: var(--spacing-4xl) 0;
    background: var(--color-light);
}

.faq-categories {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-3xl);
    flex-wrap: wrap;
    justify-content: center;
}

.category-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-white);
    color: var(--color-gray-600);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--border-radius-xl);
    cursor: pointer;
    transition: var(--transition-normal);
    font-weight: 500;
    white-space: nowrap;
}

.category-btn:hover,
.category-btn.active {
    background: var(--gradient-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.category-btn i {
    font-size: var(--font-size-sm);
}

.faq-search {
    margin-top: var(--spacing-3xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.search-container {
    position: relative;
    display: flex;
    align-items: center;
}

.search-container i {
    position: absolute;
    left: var(--spacing-md);
    color: var(--color-gray-400);
    z-index: 2;
}

#faqSearch {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) calc(var(--spacing-md) + 24px);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--border-radius-xl);
    font-size: var(--font-size-base);
    transition: var(--transition-normal);
    background: var(--color-white);
}

#faqSearch:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(187, 134, 60, 0.1);
}

.clear-btn {
    position: absolute;
    right: var(--spacing-md);
    background: none;
    border: none;
    color: var(--color-gray-400);
    cursor: pointer;
    display: none;
    transition: var(--transition-normal);
}

.clear-btn:hover {
    color: var(--color-danger);
}

.search-highlight {
    border-left: 4px solid var(--color-primary) !important;
    background: rgba(187, 134, 60, 0.05) !important;
}

.contact-methods {
    display: grid;
    gap: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-gray-100);
    border-radius: var(--border-radius-lg);
}

.contact-item i {
    color: var(--color-primary);
    font-size: var(--font-size-lg);
    margin-top: 2px;
    flex-shrink: 0;
}

.contact-item strong {
    display: block;
    color: var(--color-dark);
    margin-bottom: var(--spacing-xs);
}

.contact-item p {
    margin: 0;
    color: var(--color-gray-600);
}

.contact-item a {
    color: var(--color-primary);
    text-decoration: none;
}

.contact-item a:hover {
    text-decoration: underline;
}

/* ===============================================
   文档页面样式
   =============================================== */
.document-section {
    padding: var(--spacing-4xl) 0;
    background: var(--color-white);
}

.document-content {
    max-width: 800px;
    margin: 0 auto;
}

.document-content h2 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--color-dark);
    margin: var(--spacing-2xl) 0 var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-gray-200);
}

.document-content h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-dark);
    margin: var(--spacing-xl) 0 var(--spacing-md);
}

.document-content h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-dark);
    margin: var(--spacing-lg) 0 var(--spacing-sm);
}

.document-content p {
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
    color: var(--color-gray-700);
}

.document-content ul,
.document-content ol {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-xl);
}

.document-content li {
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
    color: var(--color-gray-700);
}

.document-content a {
    color: var(--color-primary);
    text-decoration: none;
}

.document-content a:hover {
    text-decoration: underline;
}

.document-content blockquote {
    background: var(--color-gray-100);
    border-left: 4px solid var(--color-primary);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    border-radius: var(--border-radius-md);
}

.document-content code {
    background: var(--color-gray-100);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-family: 'Courier New', monospace;
    font-size: var(--font-size-sm);
}

.document-content pre {
    background: var(--color-gray-800);
    color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    overflow-x: auto;
    margin: var(--spacing-lg) 0;
}

.document-content pre code {
    background: none;
    padding: 0;
    color: inherit;
}

.document-toc {
    background: var(--color-gray-100);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--spacing-2xl);
}

.document-toc h3 {
    margin-top: 0;
    margin-bottom: var(--spacing-md);
    color: var(--color-dark);
}

.document-toc ul {
    margin: 0;
    padding-left: var(--spacing-lg);
}

.document-toc a {
    color: var(--color-gray-600);
    text-decoration: none;
    transition: var(--transition-normal);
}

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

.highlight-box {
    background: linear-gradient(135deg, rgba(187, 134, 60, 0.1), rgba(192, 185, 174, 0.1));
    border: 1px solid rgba(187, 134, 60, 0.3);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    margin: var(--spacing-lg) 0;
}

.warning-box {
    background: rgba(255, 193, 7, 0.1);
    border: 1px solid rgba(255, 193, 7, 0.3);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    margin: var(--spacing-lg) 0;
}

.info-box {
    background: rgba(23, 162, 184, 0.1);
    border: 1px solid rgba(23, 162, 184, 0.3);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    margin: var(--spacing-lg) 0;
}

/* ===============================================
   响应式设计
   =============================================== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-features {
        grid-template-columns: 1fr;
    }
    

    
    .version-item {
        padding-left: 60px;
    }
    
    .versions-timeline::before {
        left: 20px;
    }
    
    .version-marker {
        left: 10px;
    }
    
    .faq-categories {
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: var(--spacing-sm);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--color-white);
        width: 100%;
        text-align: center;
        transition: var(--transition-normal);
        box-shadow: var(--shadow-lg);
        padding: var(--spacing-lg) 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .hero {
        padding: var(--spacing-3xl) 0 var(--spacing-xl);
        min-height: auto;
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .title-sub {
        font-size: var(--font-size-lg);
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .download-btn {
        width: 100%;
        justify-content: center;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-info {
        justify-content: center;
    }
    
    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
    }
    
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
    
    .page-title {
        font-size: var(--font-size-3xl);
    }
    
    .page-header {
        padding: calc(var(--spacing-3xl) + 70px) 0 var(--spacing-2xl);
    }
    
    .breadcrumb {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .faq-categories {
        gap: var(--spacing-sm);
    }
    
    .category-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero-title {
        font-size: var(--font-size-2xl);
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .hero-features {
        gap: var(--spacing-sm);
    }
    
    .feature-item {
        font-size: var(--font-size-sm);
    }
    
    .news-card {
        padding: var(--spacing-lg);
    }
    
    .gallery-grid {
        gap: var(--spacing-lg);
    }
    
    .version-item {
        padding-left: 40px;
    }
    
    .versions-timeline::before {
        left: 10px;
    }
    
    .version-marker {
        left: 0;
        width: 16px;
        height: 16px;
    }
    
    .modal-nav {
        padding: 0 -30px;
    }
    
    .modal-prev, .modal-next {
        padding: var(--spacing-sm);
    }
    
    .page-title {
        font-size: var(--font-size-2xl);
    }
    
    .page-header {
        padding: calc(var(--spacing-2xl) + 70px) 0 var(--spacing-xl);
    }
    
    .faq-categories {
        flex-direction: column;
        align-items: stretch;
    }
    
    .category-btn {
        justify-content: center;
    }
}

/* ===============================================
   工具样式
   =============================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.hidden { display: none; }
.visible { display: block; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

/* 动画应用 */
.animate-fade-in {
    animation: fadeIn 0.6s ease-out;
}

.animate-slide-in-left {
    animation: slideInLeft 0.6s ease-out;
}

.animate-slide-in-right {
    animation: slideInRight 0.6s ease-out;
}

.animate-pulse {
    animation: pulse 2s infinite;
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: var(--border-radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-secondary);
}

/* Firefox */
html {
    scrollbar-width: thin;
    scrollbar-color: var(--color-primary) var(--color-gray-100);
}

/* ===============================================
   选择文本样式
   =============================================== */
::selection {
    background: var(--color-primary);
    color: var(--color-white);
}

::-moz-selection {
    background: var(--color-primary);
    color: var(--color-white);
}

/* ===============================================
   加载状态
   =============================================== */
.loading {
    opacity: 0.6;
    pointer-events: none;
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--color-gray-300);
    border-top: 2px solid var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ===============================================
   焦点样式
   =============================================== */
.btn:focus,
.nav-link:focus,
button:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}



@keyframes downloadPulse {
    0%, 100% { 
        box-shadow: 0 8px 30px rgba(187, 134, 60, 0.4);
        transform: scale(1);
    }
    50% { 
        box-shadow: 0 12px 40px rgba(187, 134, 60, 0.6);
        transform: scale(1.02);
    }
}

.btn-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-button);
    z-index: 1;
}

.btn-content {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) var(--spacing-2xl);
}

.btn-shine {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    z-index: 3;
    animation: btnShine 3s ease-in-out infinite;
}

@keyframes btnShine {
    0%, 100% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    50% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

.glass-effect {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.glass-effect:hover {
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.btn-outline {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: var(--color-white);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* 英雄视觉区域 */
.hero-showcase {
    position: relative;
}

.showcase-main {
    position: relative;
    margin-bottom: var(--spacing-lg);
}

.image-frame {
    position: relative;
    border-radius: var(--border-radius-2xl);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    transition: var(--transition-slow);
}

.image-frame:hover {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg) scale(1.02);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.4);
}

.main-image {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition-slow);
}

.image-glow {
    position: absolute;
    top: -20px;
    left: -20px;
    right: -20px;
    bottom: -20px;
    background: conic-gradient(from 0deg, var(--color-primary), var(--color-secondary), var(--color-primary));
    border-radius: var(--border-radius-2xl);
    z-index: -1;
    opacity: 0;
    animation: imageGlow 4s ease-in-out infinite;
}

@keyframes imageGlow {
    0%, 100% { opacity: 0; transform: rotate(0deg) scale(1); }
    50% { opacity: 0.3; transform: rotate(180deg) scale(1.05); }
}

/* 浮动元素 */
.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.floating-badge {
    position: absolute;
    background: rgba(0, 0, 0, 0.8);
    color: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-lg);
    font-size: var(--font-size-sm);
    font-weight: 600;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    animation: float 3s ease-in-out infinite;
}

.floating-badge.top-left {
    top: 20px;
    left: 20px;
    animation-delay: 0s;
}

.floating-badge.top-right {
    top: 20px;
    right: 20px;
    animation-delay: 0.5s;
}

.floating-badge.bottom-left {
    bottom: 20px;
    left: 20px;
    animation-delay: 1s;
}

.floating-badge.bottom-right {
    bottom: 20px;
    right: 20px;
    animation-delay: 1.5s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-5px); }
}

/* 缩略图 */
.showcase-thumbnails {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

.thumbnail-item {
    width: 80px;
    height: 60px;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    cursor: pointer;
    opacity: 0.6;
    transition: var(--transition-normal);
    border: 2px solid transparent;
}

.thumbnail-item.active,
.thumbnail-item:hover {
    opacity: 1;
    border-color: var(--color-primary);
    transform: scale(1.1);
}

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

/* 滚动指示器 */
.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-2xl);
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--color-white);
    animation: scrollBounce 2s ease-in-out infinite;
}

.scroll-text {
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-sm);
    opacity: 0.8;
}

.scroll-arrow {
    font-size: var(--font-size-lg);
    color: var(--color-primary);
}

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

/* ===============================================
   打印样式
   =============================================== */
@media print {
    .header,
    .back-to-top,
    .gallery-modal,
    .carousel-controls {
        display: none !important;
    }
    
    .hero {
        background: none !important;
        color: var(--color-dark) !important;
    }
    
    .section-title::after {
        display: none;
    }
    
    .btn {
        border: 1px solid var(--color-gray-400);
        background: none !important;
        color: var(--color-dark) !important;
    }
} 

/* ===============================================
   无障碍支持
   =============================================== */
button:focus,
a:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

button:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
} 

/* ===============================================
   英雄区域响应式设计
   =============================================== */

/* 平板和小屏幕 */
@media (max-width: 991px) {
    .hero {
        padding: calc(var(--spacing-2xl) + 70px) 0 var(--spacing-xl);
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
        text-align: center;
    }
    
    .hero-text {
        order: 2;
    }
    
    .hero-visual {
        order: 1;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .hero-info {
        justify-content: center;
    }
    
    .hero-actions {
        justify-content: center;
    }
}

/* 手机设备 */
@media (max-width: 767px) {
    .hero {
        padding: calc(var(--spacing-xl) + 70px) 0 var(--spacing-lg);
    }
    
    .hero-content {
        gap: var(--spacing-lg);
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .title-sub {
        font-size: var(--font-size-base);
    }
    
    .hero-description {
        font-size: var(--font-size-sm);
    }
    
    .hero-info {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: center;
    }
    
    .info-item {
        align-items: center;
        text-align: center;
    }
    
    .hero-actions {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .download-btn,
    .btn-secondary {
        width: 100%;
        max-width: 280px;
    }
    
    .hero-visual {
        max-width: 300px;
    }
}

/* 小手机 */
@media (max-width: 480px) {
    .hero {
        padding: calc(var(--spacing-lg) + 70px) 0 var(--spacing-md);
    }
    
    .hero-title {
        font-size: var(--font-size-2xl);
    }
    
    .hero-description {
        font-size: var(--font-size-xs);
        line-height: 1.5;
    }
    
    .hero-info {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-md);
    }
    
    .info-item {
        min-width: 80px;
    }
}