/* ==========================================
   TipTop CELLshot 官网样式
   生物科技风格 | 深色背景 | 荧光色系
   ========================================== */

/* 全局变量 */
:root {
    /* 颜色系统 */
    --color-bg-dark: #0a0e1a;
    --color-bg-darker: #050810;
    --color-primary: #00e5ff;
    --color-secondary: #b794f6;
    --color-accent: #7c3aed;
    --color-glow-cyan: rgba(0, 229, 255, 0.6);
    --color-glow-purple: rgba(183, 148, 246, 0.6);
    --color-text-primary: #e8eaed;
    --color-text-secondary: #9ca3af;
    --color-text-muted: #6b7280;
    
    /* 间距系统 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* 字体 */
    --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --font-en: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* 动画时间 */
    --transition-fast: 0.2s;
    --transition-normal: 0.3s;
    --transition-slow: 0.5s;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background: var(--color-bg-darker);
    color: var(--color-text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

/* 英文模式字体优化 */
body.lang-en {
    font-family: var(--font-en);
    letter-spacing: -0.01em; /* Inter 字体特性 */
    line-height: 1.6;        /* 英文通常需要稍紧凑的行高 */
}

/* 日文模式字体优化 */
body.lang-ja {
    font-family: "Hiragino Kaku Gothic Pro", "Noto Sans JP", "Meiryo", sans-serif;
    font-size: 100%; /* 确保日文系统下字体大小基准一致 */
}

/* 繁体中文模式字体优化 */
body.lang-zh-hant {
    font-family: "Microsoft JhengHei", "PingFang TC", "Heiti TC", "Noto Sans TC", sans-serif;
    font-size: 100%; /* 确保繁体中文系统下字体大小基准一致 */
}

/* 粒子背景画布 */
#particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: 0.6; /* 降低首屏粒子不透明度，与背景图和谐叠加 */
}

/* 鼠标跟随光晕 */
#cursor-glow {
    position: fixed;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--color-glow-cyan) 0%, transparent 70%);
    pointer-events: none;
    transform: translate(-50%, -50%);
    z-index: 1;
    opacity: 0;
    transition: opacity var(--transition-normal);
    mix-blend-mode: screen;
}

body:hover #cursor-glow {
    opacity: 0.3;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 26, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 229, 255, 0.1);
    padding: 1.5rem 0;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: 0.05em;
}

.logo-powered-by {
    height: 3.6rem;
    width: auto;
    object-fit: contain;
}

.logo-main {
    color: var(--color-text-primary);
    font-size: inherit; /* 继承父元素 .logo 的字体大小 */
}

/* 确保所有语言系统下 logo 大小一致 */
body.lang-ja .logo {
    font-size: 1.6rem !important; /* 日文字体渲染特性，需要稍小一些 */
}
body.lang-en .logo,
body.lang-zh .logo {
    font-size: 1.8rem;
}

/* 确保所有语言系统下 logo-main (CELLshot) 字体大小一致 */
body.lang-ja .logo-main {
    font-size: 1.6rem !important; /* 日文字体渲染特性，需要稍小一些 */
}
body.lang-en .logo-main,
body.lang-zh .logo-main {
    font-size: 1.8rem;
}

.logo-accent {
    color: var(--color-primary);
    font-weight: 400;
}

.nav-menu {
    display: flex;
    gap: 3rem;
}

.nav-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 1.6rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    position: relative;
    transition: color var(--transition-normal);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    transition: width var(--transition-normal);
}

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

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

/* 语言切换器 */
.language-switcher {
    display: flex;
    gap: 0.4rem;
}

.lang-btn {
    background: transparent;
    border: 1px solid rgba(0, 229, 255, 0.15);
    color: var(--color-text-secondary);
    padding: 0.3rem 0.75rem;
    border-radius: 16px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all var(--transition-normal);
    opacity: 0.8;
}

.lang-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    opacity: 1;
}

.lang-btn.active {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-color: transparent;
    color: white;
    opacity: 1;
}

/* 中文下拉菜单 */
.chinese-dropdown {
    position: relative;
    display: inline-block;
}

.chinese-toggle {
    position: relative;
    padding-right: 1.5rem;
}

.chinese-toggle::after {
    content: '▼';
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.6rem;
    opacity: 0.7;
    transition: transform var(--transition-normal);
}

.chinese-dropdown:hover .chinese-toggle::after {
    transform: translateY(-50%) rotate(180deg);
}

.chinese-menu {
    position: absolute;
    top: 100%;
    left: -55px;
    background: rgba(10, 14, 26, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 229, 255, 0.2);
    border-radius: 8px;
    padding: 0.5rem;
    min-width: 120px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
    z-index: 1000;
}

.chinese-dropdown:hover .chinese-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(5px);
}

.chinese-menu .lang-btn {
    display: block;
    width: 100%;
    text-align: left;
    margin-bottom: 0.25rem;
    border: none;
    border-radius: 4px;
    padding: 0.4rem 0.75rem;
}

.chinese-menu .lang-btn:last-child {
    margin-bottom: 0;
}

.chinese-menu .lang-btn:hover {
    background: rgba(0, 229, 255, 0.1);
    border: none;
}

/* 移动端菜单按钮 */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 2px;
    background: var(--color-primary);
    transition: all var(--transition-normal);
}

/* 移动端菜单 */
.mobile-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(10, 14, 26, 0.95);
    backdrop-filter: blur(20px);
    padding: 2rem;
    display: none;
    flex-direction: column;
    gap: 1.5rem;
    z-index: 999;
    border-bottom: 1px solid rgba(0, 229, 255, 0.2);
}

.mobile-menu.active {
    display: flex;
}

.mobile-nav-link {
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: 1.2rem;
    font-weight: 500;
    padding: 1rem;
    border-left: 3px solid transparent;
    transition: all var(--transition-normal);
}

.mobile-nav-link:hover {
    color: var(--color-primary);
    border-left-color: var(--color-primary);
    background: rgba(0, 229, 255, 0.05);
}

/* 主内容区 */
.main-content {
    position: relative;
    z-index: 10;
    padding-top: 100px;
}

/* 部分样式 */
section {
    min-height: 100vh;
    padding: var(--spacing-xl) var(--spacing-md);
    max-width: 1400px;
    margin: 0 auto;
}

/* 致先行者部分 - 背景图片 */
#pioneers {
    position: relative;
    background-image: url('../images/pioneers-background.jpeg');
    background-size: 100% auto; /* 宽度全宽，高度自适应，防止变形 */
    background-position: center 80px; /* 图片下移 80px，避开页眉 */
    background-attachment: fixed;
    background-repeat: no-repeat;
    max-width: none; /* 首屏全宽显示 */
    padding-top: calc(var(--spacing-xl) + 80px); /* 增加顶部内边距，让内容也下移 */
}

/* 限制内部内容宽度，修复容器被拉宽的问题 */
#pioneers .section-header,
#pioneers .intro-section,
#pioneers .themes-container {
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

/* 调整标题位置：保持居中对齐，但整体区域左移 */
#pioneers .section-header {
    max-width: 1000px;
    margin-left: 5%;
    margin-right: auto;
    margin-bottom: 28rem; /* 控制标题与下方内容的间距。数值越大，下方文字越靠下 */
}

/* 背景遮罩层 - 第一屏更亮，下方内容保持可读性 */
#pioneers::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    /* background: linear-gradient(
        to bottom,
        rgba(5, 8, 16, 0.08) 0%,   
        rgba(5, 8, 16, 0.15) 20%,  
        rgba(10, 14, 26, 0.35) 40%,
        rgba(10, 14, 26, 0.60) 60%,
        rgba(5, 8, 16, 0.85) 80%,  
        rgba(5, 8, 16, 1) 100%     
    ); */
    z-index: 1;
}

/* 确保内容在遮罩层之上 */
#pioneers > * {
    position: relative;
    z-index: 2;
}

/* 移动端优化 - 禁用视差效果以提升性能 */
@media (max-width: 768px) {
    #pioneers {
        background-attachment: scroll;
        background-size: 100% auto; /* 保持宽高比，防止变形 */
        background-position: center 60px; /* 移动端也稍微下移 */
        padding-top: calc(var(--spacing-xl) + 40px);
    }
    
    /* 移动端遮罩优化：第一屏更亮，但比桌面端稍深以确保小屏文字清晰 */
    #pioneers::before {
        /* background: linear-gradient(
            to bottom,
            rgba(5, 8, 16, 0.15) 0%,   
            rgba(10, 14, 26, 0.30) 30%,
            rgba(10, 14, 26, 0.55) 50%,
            rgba(5, 8, 16, 0.85) 80%,  
            rgba(5, 8, 16, 1) 100%     
        ); */
    }
    
    /* 移动端间距调整 */
    .section-header,
    #pioneers .section-header {
        margin-bottom: 5rem;
        margin-left: auto; /* 恢复居中 */
    }
}

/* 致远见者 - 背景图设置 */
#visionary {
    position: relative;
    background-image: url('../images/visionary-background.jpeg');
    background-size: 100% auto;
    background-position: center 80px;
    background-attachment: fixed;
    background-repeat: no-repeat;
    max-width: none;
    padding-top: calc(var(--spacing-xl) + 80px);
}

/* 限制内部内容宽度 */
#visionary .section-header,
#visionary .intro-section,
#visionary .themes-container {
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

/* 调整标题位置 */
#visionary .section-header {
    max-width: 1000px;
    margin-left: 5%;
    margin-right: auto;
    margin-bottom: 28rem;
}

/* 背景遮罩层 - 第一屏更亮，下方内容保持可读性 */
#visionary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    /* background: linear-gradient(
        to bottom,
        rgba(5, 8, 16, 0.08) 0%,    
        rgba(5, 8, 16, 0.15) 20%,   
        rgba(10, 14, 26, 0.35) 40%, 
        rgba(10, 14, 26, 0.60) 60%, 
        rgba(5, 8, 16, 0.85) 80%,   
        rgba(5, 8, 16, 1) 100%      
    ); */
    z-index: 1;
}

/* 确保内容在遮罩层之上 */
#visionary > * {
    position: relative;
    z-index: 2;
}

/* 致同行者 - 背景图设置 */
#travelers {
    position: relative;
    background-image: url('../images/travelers-background.jpeg');
    background-size: 100% auto;
    background-position: center 80px;
    background-attachment: fixed;
    background-repeat: no-repeat;
    max-width: none;
    padding-top: calc(var(--spacing-xl) + 80px);
}

/* 限制内部内容宽度 */
#travelers .section-header,
#travelers .intro-section,
#travelers .themes-container {
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

/* 调整标题位置 */
#travelers .section-header {
    max-width: 1000px;
    margin-left: 5%;
    margin-right: auto;
    margin-bottom: 28rem;
}

/* 背景遮罩层 - 第一屏更亮，下方内容保持可读性 */
#travelers::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    /* background: linear-gradient(
        to bottom,
        rgba(5, 8, 16, 0.08) 0%, 
        rgba(5, 8, 16, 0.15) 20%,     
        rgba(10, 14, 26, 0.35) 40%,   
        rgba(10, 14, 26, 0.60) 60%,   
        rgba(5, 8, 16, 0.85) 80%,     
        rgba(5, 8, 16, 1) 100%        
    ); */
    z-index: 1;
}

/* 确保内容在遮罩层之上 */
#travelers > * {
    position: relative;
    z-index: 2;
}

/* 移动端优化 - 致远见者和致同行者 */
@media (max-width: 768px) {
    #visionary,
    #travelers {
        background-attachment: scroll;
        background-size: 100% auto;
        background-position: center 60px;
        padding-top: calc(var(--spacing-xl) + 40px);
    }
    
    /* 移动端遮罩优化 */
    #visionary::before,
    #travelers::before {
        /* background: linear-gradient(
            to bottom,
            rgba(5, 8, 16, 0.15) 0%,
            rgba(10, 14, 26, 0.30) 30%,
            rgba(10, 14, 26, 0.55) 50%,
            rgba(5, 8, 16, 0.85) 80%,
            rgba(5, 8, 16, 1) 100%
        ); */
    }
    
    /* 移动端间距调整 */
    #visionary .section-header,
    #travelers .section-header {
        margin-bottom: 5rem;
        margin-left: auto; /* 恢复居中 */
    }
}

/* 部分标题 */
.section-header {
    text-align: center;
    margin-bottom: 8rem; /* 增加间距，让背景图区域与内容卡片分离更明显 */
    animation: fadeInUp 1s ease-out;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
}

.title-cn {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title-en {
    color: var(--color-text-secondary);
    font-size: 0.6em;
    font-weight: 400;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
    font-family: var(--font-en);
    letter-spacing: 0.05em;
}

.subtitle-en {
    font-style: italic;
}

.belief-text {
    margin-top: var(--spacing-lg);
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-primary);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

/* 引言部分 */
.intro-section {
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 1s ease-out 0.2s backwards;
}

.intro-card {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(0, 229, 255, 0.2);
    border-radius: 20px;
    padding: var(--spacing-lg);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
}

.intro-card::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary), var(--color-accent));
    border-radius: 20px;
    opacity: 0;
    z-index: -1;
    transition: opacity var(--transition-normal);
}

.intro-card:hover::before {
    opacity: 0.3;
}

.intro-text {
    font-size: 1.3rem;
    line-height: 2;
    margin-bottom: 1.5rem;
    color: var(--color-text-primary);
    text-align: center;
}

.intro-text:last-child {
    margin-bottom: 0;
}

.intro-text-en {
    font-family: var(--font-en);
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    font-style: italic;
    margin-top: 1rem;
}

.intro-text-slogan {
    font-size: 1.5rem;
    font-weight: 600;
    text-align: center;
    margin-top: var(--spacing-md);
}

.highlight-text {
    color: var(--color-primary);
    font-weight: 600;
}

.glow-text {
    color: var(--color-primary);
    text-shadow: 0 0 10px var(--color-glow-cyan);
}

/* 主题容器 */
.themes-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

/* 主题卡片 */
.theme-card {
    background: rgba(15, 23, 42, 0.4);
    border: 1px solid rgba(0, 229, 255, 0.15);
    border-radius: 24px;
    padding: var(--spacing-lg);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-slow);
    /* 移除 CSS 动画，统一由 JS ScrollObserver 控制，避免闪烁 */
    /* animation: fadeInUp 1s ease-out backwards; */
    opacity: 0; /* 默认隐藏，配合 JS 实现滚动显现，避免加载时闪烁 */
    transform: translateY(30px);
}

/* 移除不再需要的 CSS 动画延迟 */
/* .theme-card:nth-child(1) { animation-delay: 0.3s; }
.theme-card:nth-child(2) { animation-delay: 0.5s; }
.theme-card:nth-child(3) { animation-delay: 0.7s; } */

.theme-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--color-glow-cyan), var(--color-glow-purple));
    opacity: 0;
    transition: opacity var(--transition-normal);
    z-index: 0;
}

.theme-card:hover {
    transform: translateY(-10px);
    border-color: var(--color-primary);
    box-shadow: 0 20px 60px rgba(0, 229, 255, 0.3);
}

.theme-card:hover::before {
    opacity: 0.1;
}

.theme-number {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    font-size: 4rem;
    font-weight: 700;
    color: rgba(0, 229, 255, 0.1);
    z-index: 1;
    font-family: var(--font-en);
}

.theme-content {
    position: relative;
    z-index: 2;
}

.theme-title {
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.theme-title-cn {
    color: var(--color-text-primary);
    display: block;
    margin-bottom: 0.5rem;
}

.theme-title-en {
    color: var(--color-secondary);
    font-size: 0.7em;
    font-weight: 400;
    font-family: var(--font-en);
    font-style: italic;
    display: block;
}

/* 英文系统下，当英文标题作为主标题显示时，调整样式 */
body.lang-en .theme-title .theme-title-en {
    font-size: 1em !important;
    font-weight: 700 !important;
    color: var(--color-text-primary) !important;
    font-style: normal !important;
}

.theme-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.theme-description {
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.8;
}

/* 产品卡片特殊样式 */
.product-card .theme-title-cn {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.product-status {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.05em;
}

.product-status.available {
    background: linear-gradient(135deg, rgba(0, 229, 255, 0.2), rgba(124, 58, 237, 0.2));
    border: 1px solid var(--color-primary);
    color: var(--color-primary);
}

.product-status.coming-soon {
    background: rgba(183, 148, 246, 0.1);
    border: 1px solid var(--color-secondary);
    color: var(--color-secondary);
}

.product-status.future {
    background: rgba(124, 58, 237, 0.1);
    border: 1px solid var(--color-accent);
    color: var(--color-accent);
}

/* 按钮样式 */
.theme-btn {
    display: inline-block;
    text-decoration: none;
    margin-top: var(--spacing-md);
    padding: 1rem 2.5rem;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border: none;
    border-radius: 30px;
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
    letter-spacing: 0.05em;
}

.theme-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width var(--transition-slow), height var(--transition-slow);
}

.theme-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 229, 255, 0.4);
}

.theme-btn:active {
    transform: translateY(-1px);
    box-shadow: 0 5px 15px rgba(0, 229, 255, 0.3);
}

.theme-btn:hover::before {
    width: 300px;
    height: 300px;
}

/* 页脚区域 */
.site-footer {
    position: relative;
    padding: var(--spacing-lg) var(--spacing-md) var(--spacing-md);
    background: rgba(10, 14, 26, 0.8);
    border-top: 1px solid rgba(0, 229, 255, 0.1);
    z-index: 10;
}

/* 公司信息 */
.company-info {
    max-width: 1400px;
    margin: 0 auto var(--spacing-md);
    padding: 1.2rem 1.5rem;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(0, 229, 255, 0.2);
    border-radius: 12px;
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    backdrop-filter: blur(10px);
}

.company-info p {
    margin: 0.5rem 0;
}

.company-info p:first-child {
    margin-top: 0;
}

.company-info p:last-child {
    margin-bottom: 0;
}

.company-name {
    font-weight: 600;
    color: var(--color-primary);
    font-size: 0.85rem;
}

.company-address {
    color: var(--color-text-secondary);
}

.company-contact {
    color: var(--color-text-secondary);
}

/* 风险提示 */
.risk-disclaimer {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md);
    text-align: center;
    font-size: 0.7rem;
    color: #4b5563; /* 降低对比度，使其不那么显眼 */
    line-height: 1.5;
    opacity: 0.6;   /* 进一步降低不透明度 */
}

.risk-disclaimer p {
    margin: 0;
}

/* 动画定义 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 20px var(--color-glow-cyan);
    }
    50% {
        box-shadow: 0 0 40px var(--color-glow-purple);
    }
}

/* 响应式设计 - 平板 */
@media (max-width: 1024px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }
    
    .nav-menu {
        gap: 2rem;
    }
    
    section {
        padding: var(--spacing-lg) var(--spacing-md);
    }
}

/* 响应式设计 - 手机 */
@media (max-width: 768px) {
    :root {
        --spacing-md: 1rem;
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
    }
    
    .navbar {
        padding: 1rem 0;
    }
    
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .language-switcher {
        gap: 0.3rem;
    }
    
    .lang-btn {
        padding: 0.25rem 0.6rem;
        font-size: 0.75rem;
    }
    
    /* 移动端中文下拉菜单优化 */
    .chinese-toggle {
        padding-right: 1.2rem;
    }
    
    .chinese-toggle::after {
        right: 0.3rem;
        font-size: 0.5rem;
    }
    
    .chinese-menu {
        min-width: 100px;
        left: -10px;
    }
    
    .main-content {
        padding-top: 80px;
    }
    
    .site-footer {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .company-info {
        padding: 1rem;
        font-size: 0.7rem;
        margin-bottom: var(--spacing-sm);
    }
    
    .company-name {
        font-size: 0.75rem;
    }
    
    .risk-disclaimer {
        padding: var(--spacing-sm);
        font-size: 0.65rem;
    }
    
    section {
        min-height: auto;
        padding: var(--spacing-lg) var(--spacing-sm);
    }
    
    .section-header {
        margin-bottom: var(--spacing-lg);
    }
    
    .intro-card {
        padding: var(--spacing-md);
    }
    
    .intro-text {
        font-size: 1.1rem;
        line-height: 1.8;
    }
    
    .intro-text-slogan {
        font-size: 1.2rem;
    }
    
    .themes-container {
        gap: var(--spacing-md);
    }
    
    .theme-card {
        padding: var(--spacing-md);
    }
    
    .theme-number {
        font-size: 3rem;
        top: var(--spacing-sm);
        right: var(--spacing-sm);
    }
    
    .theme-btn {
        padding: 0.9rem 2rem;
        font-size: 0.95rem;
        width: 100%;
    }
    
    #cursor-glow {
        display: none;
    }
}

/* 超小屏幕优化 */
@media (max-width: 480px) {
    .logo {
        font-size: 1.4rem;
    }
    
    .logo-powered-by {
        height: 2.6rem;
    }
    
    /* 超小屏幕中文下拉菜单优化 */
    .language-switcher {
        gap: 0.2rem;
    }
    
    .lang-btn {
        padding: 0.2rem 0.5rem;
        font-size: 0.7rem;
    }
    
    .chinese-toggle {
        padding-right: 1rem;
    }
    
    .chinese-toggle::after {
        right: 0.2rem;
        font-size: 0.45rem;
    }
    
    .chinese-menu {
        min-width: 90px;
        left: -15px;
    }
    
    .section-title {
        font-size: 2.2rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .theme-title {
        font-size: 1.3rem;
    }
    
    .theme-subtitle {
        font-size: 1rem;
    }
    
    .intro-text {
        font-size: 1rem;
    }
}

.section-visionary {
    position: relative;
}
.pos-img-1 {
    position: absolute!important;
    top: 23rem;
    left: 4rem;
    width: 50%;
    height: 15%;
}
/* 漂浮动画关键帧 - 使用bottom和left属性，平滑循环 */
@keyframes float-1 {
    0% {
        bottom: 0%;
        left: 0%;
    }
    20% {
        bottom: 40%;
        left: 20%;
    }
    40% {
        bottom: 70%;
        left: 40%;
    }
    60% {
        bottom: 40%;
        left: 60%;
    }
    80% {
        bottom: 10%;
        left: 80%;
    }
    100% {
        bottom: 0%;
        left: 0%;
    }
}

/* img-main-2 漂浮动画 - 从左上角开始 */
@keyframes float-2 {
    0% {
        bottom: 300px;
        left: 0;
    }
    25% {
        bottom: 200px;
        left: 100px;
    }
    50% {
        bottom: 100px;
        left: 200px;
    }
    75% {
        bottom: 200px;
        left: 300px;
    }
    100% {
        bottom: 300px;
        left: 0;
    }
}

/* img-main-3 漂浮动画 - 从右下角开始 */
@keyframes float-3 {
    0% {
        bottom: 0;
        left: 300px;
    }
    25% {
        bottom: 150px;
        left: 200px;
    }
    50% {
        bottom: 300px;
        left: 100px;
    }
    75% {
        bottom: 150px;
        left: 0;
    }
    100% {
        bottom: 0;
        left: 300px;
    }
}

/* img-main-4 漂浮动画 - 从右上角开始 */
@keyframes float-4 {
    0% {
        bottom: 300px;
        left: 300px;
    }
    25% {
        bottom: 200px;
        left: 200px;
    }
    50% {
        bottom: 100px;
        left: 100px;
    }
    75% {
        bottom: 200px;
        left: 0;
    }
    100% {
        bottom: 300px;
        left: 300px;
    }
}

.pos-img-1 .img-main {
    position: absolute;
    width: 80px;
    height: 80px;
}
.pos-img-1 .img-main-1 {
    animation: float-1 30s linear infinite;
    bottom: 0;
    left: 0;
}
.pos-img-1 .img-main-2 {
    animation: float-2 30s linear infinite;
    bottom: 300px;
    left: 0;
}
.pos-img-1 .img-main-3 {
    animation: float-3 30s linear infinite;
    bottom: 0;
    left: 300px;
}
.pos-img-1 .img-main-4 {
    animation: float-4 30s linear infinite;
    bottom: 300px;
    left: 300px;
}
.pos-img-1 img {
    width: 100%;
}

.section-travelers {
    position: relative;
}

/* bg-main 样式 - 宽度占浏览器宽度的100% */
.bg-main {
    position: relative;
    width: 100vw;
    left: calc(-50vw + 50%);
    margin-left: 0;
    margin-right: 0;
    box-sizing: border-box;
}
.bg-main-1 {
    background: url('../images/bg/bg-2.jpg') no-repeat center;
    background-size: 100% auto;

}
.bg-main-2 {
    background: url('../images/bg/bg-3.jpg') no-repeat center;
    background-size: 100% auto;
    background-position: 0 0;
}
.bg-main-3 {
    background: url('../images/bg/bg-4.jpg') no-repeat center;
    background-size: 101% auto;
    background-position: -22px -74px;
}
.bg-main-4 {
    background: url('../images/bg/bg-5.jpg') no-repeat center;
    background-size: 100% auto;
    /* background-position: -22px -74px; */
}
.bg-main-4 .content-card {
    background: none;
}
.bg-main-4 .content-text p {
    text-align: center;
    font-size: 1.5rem;
}
.bg-main-6 {
    padding: 100px 0;
    background: url('../images/bg/bg-6.jpg') no-repeat center !important;
    background-size: 100% auto !important;
}
.bg-main-7 {
    background: url('../images/bg/bg-7.jpg') no-repeat center;
    background-size: 100% auto;
    padding-bottom: 140px;
    /* background-position: -22px -74px; */
}
.bg-main-7 .content-card {
    background: none !important;
    backdrop-filter: none !important;
}
.bg-main-7 .data-icon {
    position: absolute;
    bottom: -65px;
    left: 50%;
    transform: translateX(-50%);
    width: 500px;
    height: 100px;
    background: url('../images/bg/icon-15.png') no-repeat center;
    background-size: 100% auto;
}
.data-icon-ft {
    position: absolute;
    bottom: 22px;
    left: 50%;
    transform: translateX(-50%);
    width: 500px;
    height: 100px;
    background: url('../images/bg/icon-15.png') no-repeat center;
    background-size: 100% auto;
    margin-left: -14px;
}
.bg-main-8 {
    position: relative;
}
.bg-main-8 .bg-main-div-8 {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    margin-left: 414px;
    width: 470px;
    height: 286px;
    background: url('../images/bg/bg-8.jpg') no-repeat center;
    background-size: 100% auto;
    z-index: -2;
}
.bg-main-9 {
    background: url('../images/bg/bg-9.jpg') no-repeat center;
    background-size: 100% auto;
}
.bg-main-10 {
    background: url('../images/bg/bg-10.jpg') no-repeat;
    background-size: 100% auto;
    background-position: 0 -399px;
    padding: 100px 0;
}
.bg-main-11 {
    padding: 100px 0;
    background: url('../images/bg/bg-11.jpg') no-repeat;
    background-size: 100% auto;
}
.bg-main-12 {
    background: url('../images/bg/bg-12.jpg') no-repeat;
    background-size: 100% auto;
    background-position: bottom;
}
.bg-main-13 {
    background: url('../images/bg/bg-13.jpg') no-repeat;
    background-size: 100% auto;
    background-position: bottom;
}
.bg-main-14 {
    padding: 100px 0;
    background: url('../images/bg/bg-14.jpg') no-repeat;
    background-size: 100% auto;
    background-position: center;
}
/* .bg-main-15 {
    padding: 100px 0;
    background: url('../images/bg/icon-19.jpg') no-repeat;
    background-size: 100% 50%;
    background-position: center;
} */
 .bg-main-15 .data-icon {
    position: absolute;
    top: -45px;
    left: 50%;
    transform: translateX(-50%);
    width: 456px;
    height: 300px;
    z-index: -1;
    margin-left: -440px;
}
 .bg-main-15 .data-icon img {
    width: 100%;
    height: auto;
 }
  .bg-main-20 .data-icon {
    position: absolute;
    top: 21px;
    left: 50%;
    transform: translateX(-50%);
    width: 472px;
    height: 300px;
    z-index: -1;
    margin-left: -440px;
  }
 .bg-main-20 .data-icon img {
    width: 100%;
    height: auto;
}