/*!
 * Shenzhen Tech Tour - Main Stylesheet
 * 现代科技旅游网站样式
 * Author: Shenzhen Tech Tour Team
 * Version: 2.0.0
 */

/* ============================================
   CSS Variables / CSS 变量
   ============================================ */
:root {
    /* Primary Colors / 主色调 */
    --primary-dark: #1a1a2e;
    --primary-blue: #2563eb;
    --accent-orange: #ed8936;
    
    /* Background Colors / 背景色 - 纯白设计 */
    --bg-light: #ffffff;
    --bg-white: #ffffff;
    --bg-dark: #1a1a2e;
    
    /* Text Colors / 文字颜色 */
    --text-dark: #1a1a2e;
    --text-gray: #4a5568;
    --text-light: #6b7280;
    --text-white: #ffffff;
    
    /* Border Colors / 边框颜色 - 浅灰色 */
    --border-color: #e5e5e5;
    
    /* Shadows / 阴影 - 非常轻的阴影 */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 4px 8px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 8px 16px rgba(0, 0, 0, 0.06);
    
    /* Spacing / 间距 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius / 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Transitions / 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Layout / 布局 */
    --max-width: 1200px;
    --nav-height: 80px;
}

/* ============================================
   Reset & Base Styles / 重置与基础样式
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-dark);
    background-color: var(--bg-white);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Typography / 字体排版 */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    line-height: 1.2;
    color: var(--primary-dark);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.875rem; }

p {
    margin-bottom: var(--spacing-md);
}

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

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

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

ul, ol {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* Container / 容器 */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ============================================
   Language Switcher / 语言切换按钮
   ============================================ */
.lang-switcher {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-left: var(--spacing-lg);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.navbar.scrolled .lang-switcher {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
}

.lang-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.7);
    transition: all var(--transition-fast);
    border: none;
    background: none;
    cursor: pointer;
}

.navbar.scrolled .lang-btn {
    color: var(--text-gray);
}

.lang-btn:hover {
    color: var(--text-white);
}

.navbar.scrolled .lang-btn:hover {
    color: var(--primary-dark);
}

.lang-btn.active {
    background: var(--accent-orange);
    color: var(--text-white);
}

.navbar.scrolled .lang-btn.active {
    color: var(--text-white);
}

/* ============================================
   Navigation / 导航栏
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: transparent;
    transition: all var(--transition-normal);
    z-index: 1000;
}

.navbar.scrolled {
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid var(--border-color);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

/* Logo / logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: 'Poppins', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-white);
}

.navbar.scrolled .logo {
    color: var(--primary-dark);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-orange));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

/* Nav Links / 导航链接 */
.nav-links {
    display: flex;
    gap: var(--spacing-xl);
    align-items: center;
}

.nav-links a {
    color: var(--text-white);
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
}

.navbar.scrolled .nav-links a {
    color: var(--text-dark);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--accent-orange);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--accent-orange);
    transition: width var(--transition-fast);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 80%;
}

/* Mobile Menu Button / 移动端菜单按钮 */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-sm);
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-white);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.navbar.scrolled .menu-toggle span {
    background: var(--primary-dark);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* ============================================
   Hero Section / 首屏区域 - Carousel Styles
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--primary-dark);
}

/* Carousel Container */
.carousel {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

/* Carousel Track */
.carousel-track {
    position: relative;
    width: 100%;
    height: 100%;
}

/* Carousel Slide */
.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.8s ease-in-out;
}

.carousel-slide.active {
    opacity: 1;
}

.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center center;
    display: block;
}

/* Carousel Overlay */
.carousel-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg, 
        rgba(26, 54, 93, 0.7) 0%, 
        rgba(44, 82, 130, 0.5) 50%, 
        rgba(49, 130, 206, 0.6) 100%
    );
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

/* Hero Content (inside overlay) */
.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--text-white);
    padding: var(--spacing-3xl) var(--spacing-lg);
    max-width: 900px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero h1 {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--text-white);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero h1 span {
    color: var(--accent-orange);
}

.hero-subtitle {
    font-size: 1.5rem;
    opacity: 0.95;
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* Carousel Indicators */
.carousel-indicators {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 20;
}

.carousel-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    border: 2px solid rgba(255, 255, 255, 0.6);
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 0;
}

.carousel-indicator:hover {
    background: rgba(255, 255, 255, 0.7);
    transform: scale(1.2);
}

.carousel-indicator.active {
    background: var(--accent-orange);
    border-color: var(--accent-orange);
    transform: scale(1.2);
}

/* Carousel Navigation Arrows */
.carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(5px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    color: var(--text-white);
    font-size: 1.25rem;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-arrow:hover {
    background: rgba(255, 255, 255, 0.4);
    border-color: rgba(255, 255, 255, 0.6);
    transform: translateY(-50%) scale(1.1);
}

.carousel-arrow-prev {
    left: 20px;
}

.carousel-arrow-next {
    right: 20px;
}

/* ============================================
   Video Section / 视频展示区域
   ============================================ */
.video-section {
    padding: var(--spacing-3xl) 0;
}

.video-container {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    background: #000;
}

.video-player {
    width: 100%;
    display: block;
    aspect-ratio: 16 / 9;
    background: #000;
}

.video-controls {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-md);
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.video-container:hover .video-controls {
    opacity: 1;
}

.video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 70px;
    height: 70px;
    background: rgba(237, 137, 54, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.video-play-btn:hover {
    background: var(--accent-orange);
    transform: translate(-50%, -50%) scale(1.1);
}

.video-play-btn .play-icon {
    font-size: 1.5rem;
    color: var(--text-white);
    margin-left: 4px;
}

/* ============================================
   Buttons / 按钮
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--accent-orange);
    color: var(--text-white);
    border-color: var(--accent-orange);
}

.btn-primary:hover {
    background: #dd6b20;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(237, 137, 54, 0.4);
}

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

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

.btn-blue {
    background: var(--primary-blue);
    color: var(--text-white);
    border-color: var(--primary-blue);
}

.btn-blue:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--primary-blue);
    border-color: var(--primary-blue);
}

.btn-outline:hover {
    background: var(--primary-blue);
    color: var(--text-white);
}

/* WhatsApp Button / WhatsApp按钮 */
.btn-whatsapp {
    background: #25D366;
    color: var(--text-white);
    border-color: #25D366;
}

.btn-whatsapp:hover {
    background: #20BD5A;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4);
    color: var(--text-white);
}

/* Coming Soon Button / 即将开通按钮 */
.btn-coming-soon {
    background: #9CA3AF;
    color: var(--text-white);
    border-color: #9CA3AF;
    cursor: not-allowed;
    opacity: 0.7;
}

.btn-coming-soon:hover {
    background: #9CA3AF;
    transform: none;
    box-shadow: none;
    color: var(--text-white);
}

.btn-coming-soon::after {
    content: ' (Coming Soon / 即将开通)';
    font-size: 0.8em;
    opacity: 0.8;
}

.btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
}

.btn-lg {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: 1.125rem;
}

/* ============================================
   Section Styles / 通用区块样式 - 纯白设计
   ============================================ */
.section {
    padding: var(--spacing-3xl) 0;
}

.section-dark {
    background: var(--primary-dark);
    color: var(--text-white);
}

.section-dark h2,
.section-dark h3 {
    color: var(--text-white);
}

.section-gray {
    background: var(--bg-white);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.section-white {
    background: var(--bg-white);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-header h2 {
    margin-bottom: var(--spacing-md);
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-gray);
    max-width: 600px;
    margin: 0 auto;
}

.section-dark .section-header p {
    color: rgba(255, 255, 255, 0.8);
}

/* ============================================
   Features Grid / 特色网格 - 纯白卡片
   ============================================ */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    background: var(--bg-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

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

/* Feature Icon Styles / 功能图标样式 */
.feature-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-orange));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    overflow: hidden;
}

/* Feature Icon Image - 替换emoji后的图片样式 */
.feature-icon-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-lg);
}

/* Inline Icon - 行内图标样式 */
.icon-inline {
    width: 1.2em;
    height: 1.2em;
    vertical-align: middle;
    margin: 0 0.1em;
    object-fit: contain;
}

/* Small Icon - 小图标样式 */
.icon-small {
    width: 1.5rem;
    height: 1.5rem;
    vertical-align: middle;
    object-fit: contain;
}

.feature-card h4 {
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    color: var(--text-gray);
    margin-bottom: 0;
}

/* ============================================
   Tour Cards / 行程卡片 - 纯白设计
   ============================================ */
.tours-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.tour-card {
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

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

.tour-card-image {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    position: relative;
    overflow: hidden;
}

.tour-card-image::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"><polygon points="0,100 50,0 100,100" fill="rgba(255,255,255,0.05)"/></svg>');
    background-size: cover;
}

.tour-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: var(--accent-orange);
    color: var(--text-white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.tour-card-content {
    padding: var(--spacing-xl);
}

.tour-card h3 {
    margin-bottom: var(--spacing-sm);
}

.tour-card .tour-tagline {
    color: var(--text-gray);
    margin-bottom: var(--spacing-md);
}

.tour-meta {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    color: var(--text-gray);
    font-size: 0.875rem;
}

.tour-meta span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.tour-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
}

.tour-price span {
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--text-gray);
}

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

.tour-highlight {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--text-gray);
}

/* ============================================
   Testimonials / 游客评价 - 纯白卡片
   ============================================ */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.testimonial-card {
    background: var(--bg-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    position: relative;
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-lg);
    font-size: 4rem;
    color: var(--primary-blue);
    opacity: 0.15;
    font-family: Georgia, serif;
    line-height: 1;
}

.testimonial-stars {
    color: #f6ad55;
    margin-bottom: var(--spacing-md);
    font-size: 1.125rem;
}

.testimonial-text {
    font-style: italic;
    color: var(--text-gray);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.testimonial-avatar {
    width: 50px;
    height: 50px;
    background: var(--avatar-color, linear-gradient(135deg, var(--primary-blue), var(--accent-orange)));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    font-weight: 600;
}

.testimonial-name {
    font-weight: 600;
    color: var(--primary-dark);
}

.testimonial-location {
    font-size: 0.875rem;
    color: var(--text-gray);
}

/* ============================================
   CTA Section / 行动号召区块
   ============================================ */
.cta-section {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-dark));
    padding: var(--spacing-3xl) 0;
    text-align: center;
    color: var(--text-white);
}

.cta-section h2 {
    color: var(--text-white);
    margin-bottom: var(--spacing-md);
}

.cta-section p {
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
    font-size: 1.125rem;
}

.cta-contact {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2xl);
    flex-wrap: wrap;
    margin-top: var(--spacing-xl);
}

.cta-contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.125rem;
}

.cta-contact-item span {
    font-size: 1.5rem;
}

/* ============================================
   Footer / 页脚
   ============================================ */
.footer {
    background: var(--bg-dark);
    color: var(--text-light);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-brand h3 {
    color: var(--text-white);
    margin-bottom: var(--spacing-md);
}

.footer-brand p {
    margin-bottom: var(--spacing-lg);
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--accent-orange);
    color: var(--text-white);
}

.footer-column h4 {
    color: var(--text-white);
    margin-bottom: var(--spacing-lg);
    font-size: 1.125rem;
}

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

.footer-column ul li a {
    color: var(--text-light);
    transition: color var(--transition-fast);
}

.footer-column ul li a:hover {
    color: var(--accent-orange);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-bottom p {
    margin-bottom: 0;
}

/* ============================================
   Page Header / 页面头部
   ============================================ */
.page-header {
    padding-top: calc(var(--nav-height) + var(--spacing-3xl));
    padding-bottom: var(--spacing-3xl);
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-blue));
    color: var(--text-white);
    text-align: center;
}

.page-header h1 {
    color: var(--text-white);
    margin-bottom: var(--spacing-md);
}

.page-header p {
    opacity: 0.9;
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    font-size: 0.875rem;
    opacity: 0.8;
}

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

/* ============================================
   About Page Specific / 关于页面特定样式
   ============================================ */
.story-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.story-content h2 {
    margin-bottom: var(--spacing-lg);
}

.story-content p {
    color: var(--text-gray);
    line-height: 1.8;
}

.story-visual {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-dark));
    border-radius: var(--radius-xl);
    height: 400px;
    overflow: hidden;
    position: relative;
}

.story-carousel {
    height: 100%;
}

.story-carousel .carousel-track {
    height: 100%;
}

.story-carousel .carousel-slide {
    height: 100%;
}

.story-carousel .carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center center;
    display: block;
}

.story-carousel .carousel-indicators {
    position: absolute;
    bottom: 15px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
}

.story-carousel .carousel-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    border: none;
    cursor: pointer;
    transition: background 0.3s ease;
}

.story-carousel .carousel-indicator.active,
.story-carousel .carousel-indicator:hover {
    background: rgba(255, 255, 255, 1);
}

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

.value-card {
    text-align: center;
    padding: var(--spacing-xl);
}

.value-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
}

.value-card h4 {
    color: var(--text-white);
    margin-bottom: var(--spacing-sm);
}

.value-card p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0;
}

/* Team Grid / 团队网格 */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.team-card {
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.team-avatar {
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-orange));
    height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
}

.team-info {
    padding: var(--spacing-xl);
}

.team-info h4 {
    margin-bottom: var(--spacing-xs);
}

.team-role {
    color: var(--accent-orange);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

.team-bio {
    color: var(--text-gray);
    font-size: 0.9rem;
    margin-bottom: 0;
}

/* ============================================
   Tour Detail / 行程详情
   ============================================ */
.tour-detail {
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.tour-detail-header {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-blue));
    color: var(--text-white);
    padding: var(--spacing-2xl);
    text-align: center;
}

.tour-detail-header h2 {
    color: var(--text-white);
    margin-bottom: var(--spacing-sm);
}

.tour-detail-header .subtitle {
    opacity: 0.9;
    margin-bottom: var(--spacing-lg);
}

.tour-detail-meta {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
    font-size: 0.9rem;
}

.tour-detail-body {
    padding: var(--spacing-2xl);
}

.tour-section {
    margin-bottom: var(--spacing-2xl);
}

.tour-section:last-child {
    margin-bottom: 0;
}

.tour-section h3 {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
}

.tour-destinations {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.destination-item {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.destination-item span:first-child {
    font-size: 2rem;
    flex-shrink: 0;
}

.destination-item small {
    color: var(--text-gray);
    display: block;
    margin-top: var(--spacing-xs);
}

.tour-highlights-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.highlight-item span:first-child {
    font-size: 1.5rem;
}

/* ============================================
   Schedule Timeline / 时间线
   ============================================ */
.schedule-timeline {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.schedule-item {
    display: flex;
    align-items: stretch;
    gap: var(--spacing-lg);
}

.schedule-time {
    width: 100px;
    padding: var(--spacing-md);
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-weight: 600;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.schedule-content {
    flex: 1;
    padding: var(--spacing-md);
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
}

/* ============================================
   Price Table / 价格表
   ============================================ */
.price-table-container {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.price-table {
    width: 100%;
    border-collapse: collapse;
}

.price-table th,
.price-table td {
    padding: var(--spacing-lg);
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.price-table th {
    background: var(--primary-dark);
    color: var(--text-white);
    font-weight: 600;
}

.price-table td {
    color: var(--text-gray);
}

.price-table tr:last-child td {
    border-bottom: none;
}

.group-discounts {
    padding: var(--spacing-xl);
}

.discount-badges {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
}

.discount-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.discount-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-orange);
}

.discount-text {
    text-align: left;
    color: var(--text-gray);
}

/* ============================================
   Contact Page / 联系页面
   ============================================ */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    max-width: 1100px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-card {
    background: var(--bg-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    display: flex;
    gap: var(--spacing-lg);
}

.contact-card-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.contact-card h4 {
    margin-bottom: var(--spacing-sm);
}

.contact-card p {
    color: var(--text-gray);
    margin-bottom: 0;
}

.contact-form-card {
    background: var(--bg-white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.payment-methods {
    display: flex;
    gap: var(--spacing-lg);
}

.payment-method {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
}

.payment-method span {
    font-size: 2rem;
}

.payment-method small {
    color: var(--text-gray);
}

/* ============================================
   Forms / 表单样式
   ============================================ */
.booking-form {
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.form-content {
    padding: var(--spacing-2xl);
}

.form-section {
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-2xl);
    border-bottom: 1px solid var(--border-color);
}

.form-section:last-of-type {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.form-section h3 {
    margin-bottom: var(--spacing-lg);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--primary-dark);
}

.form-control {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-white);
    color: var(--text-dark);
    transition: all var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-control.error {
    border-color: #e53e3e;
}

.form-error {
    color: #e53e3e;
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
    display: none;
}

.form-error.show {
    display: block;
}

.required {
    color: #e53e3e;
}

/* Guest Type Selector */
.guest-type-selector {
    display: flex;
    gap: var(--spacing-lg);
}

.guest-type-option {
    flex: 1;
}

.guest-type-option input {
    display: none;
}

.guest-type-option label {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-lg);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-bottom: 0;
}

.guest-type-option input:checked + label {
    border-color: var(--accent-orange);
    background: rgba(237, 137, 54, 0.05);
}

.guest-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.guest-label {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.guest-price {
    color: var(--accent-orange);
    font-weight: 700;
}

/* Guest Count Grid - Adults & Children Separate */
.guest-count-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.guest-count-item {
    display: flex;
    flex-direction: column;
}

.guest-count-item .form-control {
    text-align: center;
    font-size: 1.125rem;
    font-weight: 600;
}

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

/* Pickup Option */
.pickup-option {
    display: flex;
    align-items: center;
}

.pickup-option input {
    width: 20px;
    height: 20px;
    margin-right: var(--spacing-sm);
}

.pickup-option label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    margin-bottom: 0;
}

/* Price Summary */
.price-summary {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.price-summary h4 {
    margin-bottom: var(--spacing-lg);
}

.price-breakdown {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.price-row {
    display: flex;
    justify-content: space-between;
    color: var(--text-gray);
}

.price-row.price-total {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-dark);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-md);
}

/* Payment Options */
.payment-options {
    display: flex;
    gap: var(--spacing-lg);
}

.payment-option {
    flex: 1;
}

.payment-option input {
    display: none;
}

.payment-option label {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-bottom: 0;
}

.payment-option input:checked + label {
    border-color: var(--primary-blue);
    background: rgba(37, 99, 235, 0.05);
}

.payment-icon {
    font-size: 1.5rem;
}

.payment-label {
    font-weight: 500;
}

/* Form Checkbox */
.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.form-checkbox input {
    width: 20px;
    height: 20px;
    margin-top: 3px;
    flex-shrink: 0;
}

.form-checkbox label {
    cursor: pointer;
    margin-bottom: 0;
}

/* Mini Price Table */
.mini-price-table {
    width: 100%;
    border-collapse: collapse;
}

.mini-price-table tr td {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-color);
}

.mini-price-table tr:last-child td {
    border-bottom: none;
}

/* ============================================
   Review Form / 评价表单
   ============================================ */
.review-form-card {
    background: var(--bg-white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

/* Star Rating */
.star-rating {
    display: flex;
    flex-direction: row-reverse;
    justify-content: flex-end;
    gap: var(--spacing-xs);
}

.star-rating input {
    display: none;
}

.star-rating label {
    font-size: 2rem;
    color: #ddd;
    cursor: pointer;
    transition: color 0.2s;
}

.star-rating label:hover,
.star-rating label:hover ~ label,
.star-rating input:checked ~ label {
    color: #f6ad55;
}

.star-rating label:hover {
    transform: scale(1.1);
}

/* Review Submit Section */
.review-submit-section {
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-color);
}

.mini-price-table tr td:last-child {
    text-align: right;
    font-weight: 600;
}

/* Form Success */
.form-success {
    text-align: center;
    padding: var(--spacing-3xl);
    display: none;
}

.form-success-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-xl);
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-orange));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--text-white);
}

/* Booking Actions Area */
.booking-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-color);
}

/* Payment Section */
.payment-section {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--bg-light);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-lg);
    text-align: center;
}

.payment-section h4 {
    margin-bottom: var(--spacing-md);
    color: var(--text-gray);
}

/* Form Success with Payment Options */
.form-success {
    text-align: center;
    padding: var(--spacing-3xl);
    display: none;
}

.form-success .payment-section {
    margin-top: var(--spacing-xl);
}

/* ============================================
   FAQ / 常见问题
   ============================================ */
.faq-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.faq-item {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    cursor: pointer;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.faq-question:hover {
    background: rgba(37, 99, 235, 0.03);
}

.faq-item.active .faq-question {
    background: rgba(37, 99, 235, 0.05);
}

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

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer-content {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    color: var(--text-gray);
}

/* ============================================
   Utility Classes / 工具类
   ============================================ */
.mt-4 { margin-top: var(--spacing-xl); }
.mb-4 { margin-bottom: var(--spacing-xl); }
.text-center { text-align: center; }
.text-gray { color: var(--text-gray); }

/* ============================================
   Responsive Design / 响应式设计
   ============================================ */
/* ============================================
   Enhanced Mobile Responsive Design / 增强移动端响应式设计
   ============================================ */
@media (max-width: 992px) {
    .nav-links {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: var(--bg-white);
        flex-direction: column;
        padding: var(--spacing-xl);
        gap: var(--spacing-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
        box-shadow: var(--shadow-lg);
        z-index: 100;
        max-height: calc(100vh - var(--nav-height));
        overflow-y: auto;
    }
    
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-links a {
        color: var(--text-dark);
        font-size: 1.1rem;
        padding: var(--spacing-sm) 0;
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-links a:last-child {
        border-bottom: none;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .lang-switcher {
        position: absolute;
        top: calc(var(--nav-height) - 45px);
        right: var(--spacing-lg);
    }
    
    .contact-grid,
    .story-section {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    /* Feature cards on tablet */
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
}

@media (max-width: 768px) {
    /* Typography - 移动端字体大小 */
    html {
        font-size: 15px;
    }
    
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    h4 { font-size: 1.1rem; }
    
    .hero h1 {
        font-size: 1.75rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    /* Feature cards - 移动端特性卡片 */
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .feature-icon {
        width: 60px;
        height: 60px;
    }
    
    /* Buttons - 移动端按钮优化 */
    .btn {
        min-height: 44px;
        padding: 0.75rem 1.25rem;
        font-size: 1rem;
    }
    
    .btn-lg {
        min-height: 50px;
        padding: 0.875rem 1.5rem;
        font-size: 1.05rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-social {
        justify-content: center;
    }
    
    .cta-contact {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .schedule-item {
        flex-direction: column;
    }
    
    .schedule-time {
        width: 100%;
    }
    
    .guest-type-selector {
        flex-direction: column;
    }
    
    .price-table-container {
        overflow-x: auto;
    }
    
    .discount-badges {
        flex-direction: column;
        align-items: center;
    }
    
    /* Form inputs - 移动端表单输入优化 */
    .form-control {
        min-height: 44px;
        font-size: 16px; /* 防止iOS缩放 */
        padding: 0.75rem 1rem;
    }
    
    textarea.form-control {
        min-height: 120px;
    }
    
    /* Tour cards - 移动端行程卡片 */
    .tours-grid {
        grid-template-columns: 1fr;
    }
    
    .tour-card-image {
        height: 180px;
    }
    
    /* Testimonials - 移动端评价卡片 */
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    /* Carousel arrows - 移动端轮播箭头 */
    .carousel-arrow {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    /* Images - 移动端图片优化 */
    .icon-inline {
        width: 1em;
        height: 1em;
    }
    
    /* Inline icons in text - 行内图标 */
    .tour-highlight img,
    .tour-meta img {
        max-width: 1.2em;
        max-height: 1.2em;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    /* Hero buttons - 小屏幕英雄按钮 */
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-sm);
    }
    
    .btn-lg {
        width: 100%;
        justify-content: center;
    }
    
    /* Section padding - 小屏幕内边距 */
    .section {
        padding: var(--spacing-2xl) 0;
    }
    
    /* Card padding - 小屏幕卡片内边距 */
    .feature-card,
    .tour-card-content {
        padding: var(--spacing-lg);
    }
    
    /* Footer - 小屏幕底部 */
    .footer {
        padding: var(--spacing-2xl) 0 var(--spacing-lg);
    }
    
    /* Pricing section - 小屏幕价格区域 */
    .price-summary {
        padding: var(--spacing-lg);
    }
    
    /* Form spacing - 小屏幕表单间距 */
    .form-group {
        margin-bottom: var(--spacing-lg);
    }
    
    /* Review form - 小屏幕评价表单 */
    .review-form-card {
        padding: var(--spacing-lg);
    }
    
    /* FAQ - 小屏幕常见问题 */
    .faq-question {
        padding: var(--spacing-md);
        font-size: 0.95rem;
    }
}

/* ============================================
   Bilingual Language Display / 双语显示控制
   ============================================ */
/* 默认隐藏中文 */
[data-lang="zh"] {
    display: none !important;
}

/* 切换到中文时：隐藏英文，显示中文 */
body.lang-zh [data-lang="en"] {
    display: none !important;
}

body.lang-zh [data-lang="zh"] {
    display: block !important;
}

/* 对于内联元素，使用 inline */
body.lang-zh span[data-lang="zh"],
body.lang-zh a[data-lang="zh"],
body.lang-zh button[data-lang="zh"],
body.lang-zh label[data-lang="zh"],
body.lang-zh small[data-lang="zh"] {
    display: inline !important;
}

/* 控制整块内容的显示 */
.show-zh { display: none !important; }
.lang-zh .show-en { display: none !important; }
.lang-zh .show-zh { display: block !important; }

/* 内联的 show-zh */
.lang-zh span.show-zh,
.lang-zh a.show-zh,
.lang-zh small.show-zh {
    display: inline !important;
}

/* 控制内联元素的显示 */
.inline-en { display: inline; }
.inline-zh { display: none; }
.lang-zh .inline-en { display: none; }
.lang-zh .inline-zh { display: inline; }

/* ============================================
   Social Media Icons / 社交媒体图标
   ============================================ */
.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-white);
    font-size: 1.25rem;
    transition: all var(--transition-fast);
}

.navbar.scrolled .social-icon {
    background: var(--bg-light);
    color: var(--text-gray);
}

.social-icon:hover {
    transform: translateY(-2px);
    background: var(--accent-orange);
    color: var(--text-white);
}

/* 使用CSS伪元素显示图标 */
.social-icon.tripadvisor::before { content: "📍"; }
.social-icon.instagram::before { content: "📷"; }
.social-icon.facebook::before { content: "📘"; }
.social-icon.youtube::before { content: "📺"; }
.social-icon.xiaohongshu::before { content: "📕"; }

/* 隐藏emoji文字，只显示图标 */
.social-icon {
    font-size: 0;
}

.social-icon::before {
    font-size: 1.25rem;
}

/* Mobile responsive for social icons */
@media (max-width: 768px) {
    .social-icon {
        width: 36px;
        height: 36px;
    }
    
    .social-icon::before {
        font-size: 1.1rem;
    }
}