/* ===== CSS 变量和基础样式 ===== */
:root {
    /* 主色调 - 基于参考网站的蓝色系 */
    --primary-blue: #0ea5e9;
    --primary-blue-dark: #0284c7;
    --primary-blue-light: #38bdf8;
    --primary-blue-lighter: #e0f2fe;

    /* 辅助颜色 */
    --accent-purple: #7c3aed;
    --accent-green: #10b981;
    --accent-orange: #f59e0b;
    --accent-red: #ef4444;

    /* 中性色 */
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;

    /* 语义色 */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: var(--primary-blue);

    /* 字体 */
    --font-primary: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-secondary: 'Noto Sans SC', sans-serif;

    /* 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;

    /* 圆角 */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;

    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

    /* 动画 */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
}

/* ===== 基础重置和字体 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 100px;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--gray-700);
    background-color: #ffffff;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== 顶部横幅 ===== */
.top-banner {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: white;
    padding: var(--spacing-sm) 0;
    position: relative;
    overflow: hidden;
}

.top-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

.banner-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    padding: 0 var(--spacing-md);
    font-size: 0.9rem;
    font-weight: 500;
}

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

.banner-badge {
    background: rgba(255, 255, 255, 0.2);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
}

/* ===== 主导航头部 ===== */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: var(--spacing-lg) 0;
}

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

.logo-section {
    display: flex;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    text-decoration: none;
}

.logo-icon {
    font-size: 2.5rem;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--gray-900);
    line-height: 1.2;
    margin: 0;
}

.logo-subtitle {
    font-size: 0.9rem;
    color: var(--gray-500);
    font-weight: 400;
    margin: 0;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-xl);
}

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

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

.nav-link.active {
    color: var(--primary-blue);
    background-color: var(--primary-blue-lighter);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -1.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    background-color: var(--primary-blue);
    border-radius: 50%;
}

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

/* ===== 主要内容容器 ===== */
.main-content {
    min-height: 100vh;
}

.section {
    padding: var(--spacing-3xl) 0;
}

.section.alternate-bg {
    background-color: var(--gray-50);
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.section-badge {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-blue-light) 0%, var(--primary-blue) 100%);
    color: white;
    border-radius: var(--radius-xl);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.section-title {
    font-size: 3rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.section-description {
    font-size: 1.2rem;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ===== 英雄区域 ===== */
.hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: var(--spacing-3xl) 0;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="rgba(255,255,255,0.05)" fill-opacity="0.1"><polygon points="30,0 60,30 30,60 0,30"/></g></g></svg>');
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.hero-badge {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    font-size: 0.9rem;
    font-weight: 600;
    width: fit-content;
    backdrop-filter: blur(10px);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.2;
    margin: 0;
}

.gradient-text {
    background: linear-gradient(45deg, #fbbf24, #f59e0b, #d97706);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.3rem;
    line-height: 1.6;
    opacity: 0.9;
    margin: 0;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
    color: #fbbf24;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-top: var(--spacing-xs);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.3);
}

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

.btn-primary, .btn-secondary {
    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;
    text-decoration: none;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    color: var(--gray-900);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(251, 191, 36, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

.external-icon {
    width: 16px;
    height: 16px;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-placeholder {
    width: 100%;
    height: 400px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

/* === 首页英雄图替换 === */
.image-placeholder{
  background: url("Pictures/JewelSingaporeVortex1.jpg") center/cover no-repeat;
}
.placeholder-text{display:none;}   /* 隐藏原文字表情 */


.placeholder-text {
    font-size: 1.5rem;
    opacity: 0.7;
}

/* ===== 行前准备卡片 ===== */
.prep-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-3xl);
}

.prep-card {
    background: white;
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.prep-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue-light), var(--primary-blue));
}

.prep-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-blue-light);
}

.prep-card.featured-card {
    background: linear-gradient(135deg, var(--primary-blue-lighter) 0%, #ffffff 100%);
    border: 2px solid var(--primary-blue-light);
}

.prep-card.featured-card::before {
    background: linear-gradient(90deg, var(--primary-blue), var(--accent-purple));
    height: 6px;
}

.card-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.passport-icon { filter: hue-rotate(0deg); }
.sg-card-icon { filter: hue-rotate(200deg); }
.student-icon { filter: hue-rotate(100deg); }

.card-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-sm);
}

.card-subtitle {
    font-size: 1rem;
    color: var(--gray-500);
    margin-bottom: var(--spacing-md);
    font-style: italic;
}

.requirement-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.requirement-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    background: var(--gray-50);
}

.check-icon, .warning-icon {
    font-size: 1rem;
    font-weight: bold;
    flex-shrink: 0;
    margin-top: 2px;
}

.check-icon {
    color: var(--success);
}

.warning-icon {
    color: var(--warning);
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 600;
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    background: var(--primary-blue-lighter);
    transition: all var(--transition-normal);
}

.card-link:hover {
    background: var(--primary-blue-light);
    color: white;
    transform: translateX(4px);
}

/* ===== 入境通道比较 ===== */
.immigration-section {
    margin-bottom: var(--spacing-3xl);
}

.subsection-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.subsection-description {
    font-size: 1.1rem;
    color: var(--gray-600);
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.channel-comparison {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.channel-card {
    background: white;
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.channel-card.automated {
    border: 2px solid var(--success);
}

.channel-card.automated::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--success), var(--accent-green));
}

.channel-card.manual {
    border: 2px solid var(--gray-300);
}

.channel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.channel-icon {
    font-size: 2.5rem;
}

.channel-info h4 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: 0;
}

.channel-subtitle {
    font-size: 0.9rem;
    color: var(--gray-500);
    margin: 0;
}

.recommended-badge {
    background: linear-gradient(135deg, var(--success) 0%, var(--accent-green) 100%);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
}

.suitable-for {
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--gray-50);
    border-radius: var(--radius-md);
}

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

.feature {
    font-size: 0.95rem;
    color: var(--gray-600);
}

.important-notice {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-blue-lighter) 0%, #ffffff 100%);
    border-radius: var(--radius-xl);
    border-left: 6px solid var(--primary-blue);
}

.notice-icon {
    font-size: 1.5rem;
    color: var(--primary-blue);
    flex-shrink: 0;
}

.notice-content {
    font-size: 1.1rem;
    line-height: 1.6;
}

/* ===== 航站楼选择器 ===== */
.terminal-section {
    margin-bottom: var(--spacing-3xl);
}

.terminal-selector {
    margin-bottom: var(--spacing-xl);
}

.selector-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-bottom: var(--spacing-xl);
}

.tab-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border: 2px solid var(--gray-300);
    background: white;
    color: var(--gray-600);
    border-radius: var(--radius-lg);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-size: 0.95rem;
}

.tab-btn:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
    background: var(--primary-blue-lighter);
}

.tab-btn.active {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: white;
    border-color: var(--primary-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.terminal-content-area {
    position: relative;
}

.terminal-content {
    display: none;
}

.terminal-content.active {
    display: block;
}

.terminal-card {
    background: white;
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
}

.terminal-card.special {
    background: linear-gradient(135deg, #fef3c7 0%, #ffffff 100%);
    border: 2px solid var(--warning);
}

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

.terminal-badge {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 0.9rem;
}

.special-badge {
    background: linear-gradient(135deg, var(--warning) 0%, var(--accent-orange) 100%);
}

.terminal-title h4 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: 0;
}

.landmark {
    color: var(--gray-600);
    margin: var(--spacing-xs) 0 0 0;
    font-size: 1rem;
}

.special-note {
    color: var(--warning);
    font-weight: 600;
    margin: var(--spacing-xs) 0 0 0;
}

.special-instructions {
    margin-bottom: var(--spacing-xl);
}

.instruction-box {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: rgba(251, 191, 36, 0.1);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--warning);
}

.instruction-icon {
    font-size: 1.5rem;
    color: var(--warning);
    flex-shrink: 0;
}

.instruction-text {
    font-size: 1.05rem;
    line-height: 1.6;
}

.terminal-images {
    margin-top: var(--spacing-xl);
}

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

.image-item {
    text-align: center;
}

.image-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--gray-600);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.image-item .image-placeholder {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-200) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--gray-200);
    font-size: 1.2rem;
    color: var(--gray-500);
    transition: all var(--transition-normal);
}

.image-item .image-placeholder:hover {
    background: linear-gradient(135deg, var(--primary-blue-lighter) 0%, var(--gray-200) 100%);
    border-color: var(--primary-blue);
    transform: translateY(-2px);
}

/* ===== 行李提取信息 ===== */
.baggage-section {
    margin-top: var(--spacing-3xl);
}

.info-card {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: white;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
    border-left: 6px solid var(--primary-blue);
}

.info-icon {
    font-size: 2.5rem;
    color: var(--primary-blue);
    flex-shrink: 0;
}

.info-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: 0 0 var(--spacing-sm) 0;
}

.info-description {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--gray-600);
    margin: 0;
}

/* ===== 交通接驳部分 ===== */
.destination-selector {
    margin-bottom: var(--spacing-3xl);
}

.selector-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--gray-900);
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.destination-tabs {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.dest-tab {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) var(--spacing-xl);
    background: white;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    min-width: 200px;
}

.dest-tab:hover {
    border-color: var(--primary-blue);
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.dest-tab.active {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    border-color: var(--primary-blue);
    color: white;
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.tab-icon {
    font-size: 2rem;
}

.tab-name {
    font-size: 1.3rem;
    font-weight: 700;
    line-height: 1;
}

.tab-fullname {
    font-size: 0.9rem;
    opacity: 0.8;
    line-height: 1;
    margin-top: var(--spacing-xs);
}

.transport-comparison {
    margin-bottom: var(--spacing-3xl);
}

.destination-content {
    display: none;
}

.destination-content.active {
    display: block;
}

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

.transport-card {
    background: white;
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    border: 2px solid var(--gray-200);
    position: relative;
    overflow: hidden;
}

.transport-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gray-300);
}

.transport-card.recommended {
    border-color: var(--success);
}

.transport-card.recommended::before {
    background: linear-gradient(90deg, var(--success), var(--accent-green));
}

.transport-card.budget {
    border-color: var(--accent-orange);
}

.transport-card.budget::before {
    background: linear-gradient(90deg, var(--accent-orange), var(--warning));
}

.transport-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.transport-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.transport-icon {
    font-size: 2.5rem;
}

.transport-title h4 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: 0;
}

.transport-title p {
    font-size: 0.9rem;
    color: var(--gray-500);
    margin: var(--spacing-xs) 0 0 0;
}

.recommended-label, .budget-label {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    color: white;
}

.recommended-label {
    background: linear-gradient(135deg, var(--success) 0%, var(--accent-green) 100%);
}

.budget-label {
    background: linear-gradient(135deg, var(--accent-orange) 0%, var(--warning) 100%);
}

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

.cost-time {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-md);
    background: var(--gray-50);
    border-radius: var(--radius-lg);
}

.cost, .time {
    text-align: center;
}

.cost .label, .time .label {
    display: block;
    font-size: 0.9rem;
    color: var(--gray-500);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.cost .value, .time .value {
    display: block;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-top: var(--spacing-xs);
}

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

.transport-features .feature {
    font-size: 0.95rem;
    color: var(--gray-600);
    padding: var(--spacing-sm);
    background: var(--gray-50);
    border-radius: var(--radius-md);
}

.route-info {
    background: var(--gray-50);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
}

.route-step {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    font-size: 0.9rem;
    line-height: 1.4;
}

.route-station {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: white;
    border-radius: var(--radius-sm);
    font-weight: 500;
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
}

.arrow {
    color: var(--primary-blue);
    font-weight: 700;
}

.download-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 600;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    background: var(--primary-blue-lighter);
    transition: all var(--transition-normal);
    margin-top: auto;
}

.download-link:hover {
    background: var(--primary-blue-light);
    color: white;
    transform: translateX(4px);
}

/* ===== 交通指南 ===== */
.transport-guide {
    background: white;
    border-radius: var(--radius-2xl);
    padding: var(--spacing-3xl);
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--gray-200);
}

.guide-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.guide-tabs {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.guide-tab {
    padding: var(--spacing-md) var(--spacing-xl);
    border: 2px solid var(--gray-300);
    background: white;
    color: var(--gray-600);
    border-radius: var(--radius-lg);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-size: 1rem;
}

.guide-tab:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

.guide-tab.active {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: white;
    border-color: var(--primary-blue);
}

.guide-section {
    display: none;
}

.guide-section.active {
    display: block;
}

.guide-card {
    background: var(--gray-50);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.guide-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, var(--primary-blue-lighter) 0%, white 100%);
    border-bottom: 2px solid var(--primary-blue-light);
}

.guide-icon {
    font-size: 2.5rem;
    color: var(--primary-blue);
}

.guide-header h4 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: 0;
}

.guide-body {
    padding: var(--spacing-xl);
}

.subsection {
    margin-bottom: var(--spacing-xl);
}

.subsection:last-child {
    margin-bottom: 0;
}

.subsection h5 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--primary-blue-light);
}

.guide-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.guide-list li {
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    background: white;
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-blue);
    box-shadow: var(--shadow-sm);
    position: relative;
    padding-left: var(--spacing-xl);
}

.guide-list li::before {
    content: '→';
    position: absolute;
    left: var(--spacing-md);
    top: var(--spacing-md);
    color: var(--primary-blue);
    font-weight: 700;
}

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

.step-item {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    position: relative;
}

.step-item.important {
    background: linear-gradient(135deg, #fef3c7 0%, white 100%);
    border: 2px solid var(--warning);
}

.step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: white;
    border-radius: 50%;
    font-weight: 700;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.step-item.important .step-number {
    background: linear-gradient(135deg, var(--warning) 0%, var(--accent-orange) 100%);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.step-content h5 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: 0 0 var(--spacing-sm) 0;
    border: none;
    padding: 0;
}

.step-content p {
    font-size: 1rem;
    color: var(--gray-600);
    line-height: 1.6;
    margin: 0;
}

/* ===== 页脚 ===== */
.footer {
    background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-800) 100%);
    color: white;
    padding: var(--spacing-3xl) 0 var(--spacing-xl) 0;
    margin-top: var(--spacing-3xl);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-3xl);
}

.footer-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.footer-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: white;
    margin: 0;
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--primary-blue);
}

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

.footer-links a {
    color: var(--gray-300);
    text-decoration: none;
    transition: all var(--transition-normal);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
}

.footer-links a:hover {
    color: var(--primary-blue-light);
    background: rgba(14, 165, 233, 0.1);
    transform: translateX(4px);
}

.footer-info p {
    color: var(--gray-300);
    margin: var(--spacing-sm) 0;
    font-size: 0.95rem;
}

.footer-bottom {
    margin-top: var(--spacing-3xl);
}

.footer-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gray-600), transparent);
    margin-bottom: var(--spacing-xl);
}

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

.footer-bottom-content p {
    color: var(--gray-400);
    margin: 0;
    font-size: 0.9rem;
}

.back-to-top {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--primary-blue-light);
    text-decoration: none;
    font-weight: 600;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    background: rgba(14, 165, 233, 0.1);
    transition: all var(--transition-normal);
}

.back-to-top:hover {
    background: rgba(14, 165, 233, 0.2);
    transform: translateY(-2px);
}

.arrow-up {
    width: 16px;
    height: 16px;
}

/* ===== 响应式设计 ===== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-2xl);
    }

    .hero-title {
        font-size: 3rem;
    }

    .section-title {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    html {
        scroll-padding-top: 120px;
    }

    .header-container {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .nav-menu {
        gap: var(--spacing-md);
    }

    .nav-link {
        padding: var(--spacing-sm);
        font-size: 0.9rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .prep-grid {
        grid-template-columns: 1fr;
    }

    .channel-comparison {
        grid-template-columns: 1fr;
    }

    .selector-tabs {
        flex-direction: column;
        align-items: center;
    }

    .tab-btn {
        width: 100%;
        max-width: 300px;
    }

    .destination-tabs {
        flex-direction: column;
        align-items: center;
    }

    .dest-tab {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }

    .transport-grid {
        grid-template-columns: 1fr;
    }

    .guide-tabs {
        flex-direction: column;
        align-items: center;
    }

    .guide-tab {
        width: 100%;
        max-width: 250px;
    }

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

@media (max-width: 480px) {
    .section {
        padding: var(--spacing-2xl) 0;
    }

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

    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .prep-card,
    .terminal-card,
    .transport-card {
        padding: var(--spacing-lg);
    }

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

    .btn-primary,
    .btn-secondary {
        width: 100%;
        justify-content: center;
    }

    .cost-time {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .route-step {
        flex-direction: column;
        align-items: flex-start;
    }

    .step-item {
        flex-direction: column;
        text-align: center;
    }
}

/* ===== 辅助工具类 ===== */
.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ===== 打印样式 ===== */
@media print {
    .top-banner,
    .hero-section,
    .footer {
        display: none;
    }

    .header {
        position: static;
        background: white;
        box-shadow: none;
    }

    .section {
        page-break-inside: avoid;
        margin-bottom: var(--spacing-2xl);
    }

    .prep-card,
    .terminal-card,
    .transport-card {
        page-break-inside: avoid;
        box-shadow: none;
        border: 2px solid var(--gray-300);
    }
}

/* ===== 航站楼图片样式 ===== */
.terminal-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    border: 2px solid var(--gray-200);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.terminal-image:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-blue);
}

.terminal-image:loading {
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-200) 100%);
}

/* 图片加载失败时的样式 */
.terminal-image:not([src]), .terminal-image[src=""] {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-200) 100%);
    color: var(--gray-500);
    font-size: 1rem;
}

.terminal-image:not([src])::after, .terminal-image[src=""]::after {
    content: "图片加载中...";
}

/* ===== 主航站楼选择器样式 ===== */
.main-terminal-tabs {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.main-tab-btn {
    padding: var(--spacing-lg) var(--spacing-xl);
    border: 2px solid var(--gray-300);
    background: white;
    color: var(--gray-600);
    border-radius: var(--radius-xl);
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    min-width: 140px;
    box-shadow: var(--shadow-md);
}

.main-tab-btn:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
    background: var(--primary-blue-lighter);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.main-tab-btn.active {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: white;
    border-color: var(--primary-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

/* ===== 航站楼信息头部 ===== */
.terminal-info-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-blue-lighter) 0%, white 100%);
    border-radius: var(--radius-xl);
    border: 2px solid var(--primary-blue-light);
}

.terminal-main-title {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--gray-900);
    margin: 0;
}

/* 右上角小按钮 */
.map-link-inside{
    position:absolute;
    top:0.5rem;
    right:0.5rem;

    width:2rem;
    height:2rem;
    line-height:2rem;
    text-align:center;

    font-size:1rem;
    color:#fff;
    background:var(--primary-blue);
    border-radius:50%;

    transition:background 0.25s;
    box-shadow:var(--shadow-sm);
}
.map-link-inside:hover{
    background:var(--primary-blue-dark);
}

/* 让父级 .guide-box 可以相对定位 */
.guide-box{position:relative;}


/* ===== 区域选择器样式 ===== */
.zone-selector {
    margin-bottom: var(--spacing-xl);
}

.zone-tabs {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.zone-tab-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border: 2px solid var(--gray-300);
    background: white;
    color: var(--gray-600);
    border-radius: var(--radius-lg);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-size: 0.95rem;
}

.zone-tab-btn:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
    background: var(--primary-blue-lighter);
}

.zone-tab-btn.active {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: white;
    border-color: var(--primary-blue);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* ===== 主航站楼和区域内容 ===== */
.main-terminal-content {
    display: none;
}

.main-terminal-content.active {
    display: block;
}

.zone-content {
    display: none;
}

.zone-content.active {
    display: block;
}

/* ===== 响应式设计更新 ===== */
@media (max-width: 768px) {
    .main-terminal-tabs {
        flex-direction: column;
        align-items: center;
    }

    .main-tab-btn {
        width: 100%;
        max-width: 300px;
    }

    .terminal-info-header {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

    .zone-tabs {
        flex-direction: column;
        align-items: center;
    }

    .zone-tab-btn {
        width: 100%;
        max-width: 200px;
    }
}
/* ===== 小型地图按钮样式 ===== */
.map-link-btn-small {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--primary-blue);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.9rem;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.map-link-btn-small:hover {
    background: var(--primary-blue-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.map-icon-small {
    font-size: 1rem;
}

/* ===== 导航指引样式 ===== */
.navigation-guide {
    margin: var(--spacing-lg) 0;
}

.guide-box {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, #e0f2fe 0%, #f0f9ff 100%);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary-blue);
    box-shadow: var(--shadow-sm);
}

.guide-box.special-guide {
    background: linear-gradient(135deg, #fef3c7 0%, #fffbeb 100%);
    border-left-color: var(--warning);
}

.guide-icon {
    font-size: 1.5rem;
    color: var(--primary-blue);
    flex-shrink: 0;
    margin-top: 2px;
}

.guide-box.special-guide .guide-icon {
    color: var(--warning);
}

.guide-text {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--gray-700);
}

.guide-text strong {
    color: var(--gray-900);
    font-weight: 600;
}

/* ===== 更新后的航站楼信息头部 ===== */
.terminal-info-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-blue-lighter) 0%, white 100%);
    border-radius: var(--radius-lg);
    border: 1px solid var(--primary-blue-light);
}

/* ===== 响应式调整 ===== */
@media (max-width: 768px) {
    .terminal-info-header {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

    .guide-box {
        flex-direction: column;
        text-align: left;
    }

    .guide-icon {
        align-self: flex-start;
    }
}

/* header shrink */
.header {
    padding: 0.75rem 0;          /* ↓ 上下间距 */
}

.logo-title {
    font-size: 1.25rem;          /* ↓ 标题字号 */
}

/* nav links */
.nav-link {
    padding: 0.3rem 0.75rem;     /* ↓ 内边距 */
    font-size: 0.9rem;           /* ↓ 字号（可选） */
}

/* 强制标签栏始终横向排列（含手机） */
@media (max-width: 768px) {
    /* 主航站楼标签 */
    .main-terminal-tabs {
        flex-direction: row !important;        /* 始终横排 */
        justify-content: flex-start !important;
        gap: 0.5rem !important;
        overflow-x: auto;                      /* 超出可横向滑动 */
        -webkit-overflow-scrolling: touch;     /* iOS 惯性滚动 */
    }

    /* 分区标签 */
    .zone-tabs {
        flex-direction: row !important;
        justify-content: flex-start !important;
        gap: 0.5rem !important;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    /* 标签按钮防折行 */
    .main-tab-btn,
    .zone-tab-btn {
        white-space: nowrap;
    }
}