/* ============================================
   WEALTH EXPRESS - MAIN STYLESHEET
   ============================================
   Table of Contents:
   1. CSS Variables (Design System)
   2. Reset & Base Styles
   3. Typography
   4. Layout Components
   5. Navigation
   6. Hero Section
   7. Content Sections
   8. Cards & Components
   9. Forms
   10. Footer
   11. Mobile Menu
   12. Animations & Transitions
   13. Utility Classes
   14. Media Queries
   ============================================ */

/* ============================================
   1. CSS VARIABLES (DESIGN SYSTEM)
   Easy to update company colors and styles
   ============================================ */
:root {
    /* Primary Brand Colors */
    --primary-color: #A8996E;      /* Golden beige - main accent */
    --secondary-color: #141B4D;     /* Deep navy blue - corporate */
    
    /* Text Colors */
    --text-primary: #1A1A1A;       /* Main text */
    --text-secondary: #666666;     /* Secondary text */
    --text-light: #999999;         /* Light text */
    --text-inverse: #FFFFFF;       /* White text on dark bg */
    
    /* Background Colors */
    --bg-white: #FFFFFF;           /* Pure white */
    --bg-light: #F8F8F8;           /* Light gray */
    --bg-dark: #141B4D;            /* Navy blue */
    --bg-darker: #0D1033;          /* Darker navy */
    
    /* Border & Shadow */
    --border-color: #E5E5E5;       /* Light border */
    --border-radius: 0px;          /* Sharp corners (change for rounded) */
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 30px rgba(20, 27, 77, 0.08);
    --shadow-lg: 0 15px 50px rgba(20, 27, 77, 0.12);
    
    /* Typography */
    --font-primary: 'Montserrat', 'Noto Sans SC', sans-serif;
    --font-secondary: 'Roboto', sans-serif;
    --font-chinese: 'Noto Sans SC', 'Microsoft YaHei', '微软雅黑', sans-serif;
    
    /* Font Weights */
    --font-light: 300;
    --font-regular: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    
    /* Spacing System */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Layout */
    --container-max: 1200px;
    --navbar-height: 70px;
    --navbar-height-scrolled: 60px;
}

/* ============================================
   2. RESET & BASE STYLES
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

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

/* Chinese Font Optimization */
body.zh {
    font-family: var(--font-chinese);
}

/* ============================================
   3. TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: var(--font-light);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 2.8rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.2rem, 2.5vw, 1.5rem); }

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

a {
    text-decoration: none;
    transition: var(--transition-base);
}

/* ============================================
   4. LAYOUT COMPONENTS
   ============================================ */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-white);
    position: relative;
}

.section:nth-child(even) {
    background: var(--bg-light);
}

.section.dark-section {
    background: var(--secondary-color);
    color: var(--text-inverse);
}

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

.section-title {
    font-size: 2.8rem;
    font-weight: var(--font-light);
    color: var(--secondary-color);
    text-transform: uppercase;
    letter-spacing: 3px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background: var(--primary-color);
}

.dark-section .section-title {
    color: var(--text-inverse);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto;
}

.dark-section .section-subtitle {
    color: rgba(255, 255, 255, 0.85);
}

/* ============================================
   5. NAVIGATION
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    padding: 1.2rem 0;
    transition: var(--transition-base);
}

.navbar.scrolled {
    padding: 0.8rem 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.nav-container {
    max-width: 1400px;  /* Increased container width */
    margin: 0 auto;
    padding: 0 var(--spacing-xl);  /* More padding on sides */
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-xl);  /* Add gap between logo, menu, and actions */
}

.logo {
    font-size: 1.4rem;  /* Slightly smaller for balance */
    font-weight: var(--font-bold);
    color: var(--secondary-color);
    letter-spacing: 1px;  /* Reduced letter spacing */
    text-transform: uppercase;
    white-space: nowrap;  /* Prevent wrapping */
    flex-shrink: 0;  /* Prevent logo from shrinking */
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);  /* Increased gap between menu items */
    flex-wrap: wrap;  /* Allow wrapping if needed */
    justify-content: center;
    flex: 1;  /* Take available space */
    max-width: 800px;  /* Limit menu width */
    margin: 0 auto;  /* Center the menu */
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: var(--font-medium);
    font-size: 0.85rem;  /* Slightly smaller font */
    text-transform: uppercase;
    letter-spacing: 0.5px;  /* Reduced letter spacing */
    position: relative;
    transition: var(--transition-base);
    white-space: nowrap;  /* Prevent text wrapping */
    padding: 0.25rem 0;  /* Add vertical padding */
}

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

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

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

.nav-actions {
    display: flex;
    gap: var(--spacing-md);  /* Increased gap between buttons */
    align-items: center;
    flex-shrink: 0;  /* Prevent actions from shrinking */
}

/* ============================================
   6. BUTTONS
   ============================================ */
.btn {
    padding: 0.7rem 1.8rem;  /* Slightly reduced padding */
    border: none;
    border-radius: var(--border-radius);
    font-weight: var(--font-medium);
    cursor: pointer;
    transition: var(--transition-base);
    font-size: 0.85rem;  /* Smaller font size */
    text-transform: uppercase;
    letter-spacing: 0.5px;  /* Reduced letter spacing */
    white-space: nowrap;  /* Prevent text wrapping */
}

.btn-primary {
    background: var(--primary-color);
    color: var(--text-inverse);
}

.btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

.lang-switcher {
    background: transparent;
    border: 1px solid var(--primary-color);
    color: var(--text-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: var(--font-medium);
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition-base);
}

.lang-switcher:hover {
    background: var(--primary-color);
    color: var(--text-inverse);
}

/* ============================================
   7. HERO SECTION
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, 
        rgba(168, 153, 110, 0.1) 0%, 
        transparent 50%, 
        rgba(168, 153, 110, 0.05) 100%);
    pointer-events: none;
}

.hero-content {
    text-align: center;
    z-index: 1;
    max-width: 900px;
    padding: 0 var(--spacing-lg);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: var(--font-light);
    color: var(--text-inverse);
    margin-bottom: var(--spacing-md);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
    font-weight: var(--font-regular);
    letter-spacing: 1px;
}

/* ============================================
   8. CARDS & COMPONENTS
   ============================================ */

/* Philosophy Cards */
.philosophy-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.philosophy-card {
    background: var(--bg-white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition-base);
    border-top: 3px solid transparent;
}

.philosophy-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-top-color: var(--primary-color);
}

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

/* Investment Cards */
.investment-cards {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.investment-card {
    background: var(--bg-white);
    padding: var(--spacing-xl);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.investment-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-color);
    transform: scaleY(0);
    transition: transform var(--transition-base);
}

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

.investment-card:hover::before {
    transform: scaleY(1);
}

.investment-card h3 {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-bottom: var(--spacing-md);
}

.investment-card p {
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

/* Highlight Box */
.highlight {
    background: linear-gradient(90deg, 
        rgba(168, 153, 110, 0.1) 0%, 
        rgba(168, 153, 110, 0.05) 100%);
    padding: var(--spacing-sm);
    border-left: 3px solid var(--primary-color);
    margin: var(--spacing-md) 0;
}

/* Index Icons */
.index-icons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.index-icons span {
    padding: 0.6rem 1.2rem;
    background: transparent;
    border: 1px solid var(--primary-color);
    border-radius: var(--border-radius);
    font-size: 0.85rem;
    font-weight: var(--font-medium);
    color: var(--secondary-color);
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition-base);
}

.index-icons span:hover {
    background: var(--primary-color);
    color: var(--text-inverse);
}

/* Data Stats */
.data-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.stat-bubble {
    background: var(--bg-white);
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    width: 150px;
    height: 150px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    margin: 0 auto;
    transition: var(--transition-base);
}

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

.stat-value {
    font-size: 1.8rem;
    font-weight: var(--font-bold);
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-align: center;
}

/* Bespoke Cards */
.bespoke-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.bespoke-card {
    background: var(--bg-white);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    position: relative;
}

.bespoke-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.bespoke-card h4 {
    font-size: 1.3rem;
    color: var(--secondary-color);
    margin-bottom: var(--spacing-sm);
    position: relative;
    padding-bottom: 10px;
}

.bespoke-card h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--primary-color);
}

.bespoke-card p {
    line-height: 1.7;
}

/* Dark Section Cards */
.dark-section .bespoke-card {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(168, 153, 110, 0.3);
    color: var(--text-inverse);
}

.dark-section .bespoke-card h4 {
    color: var(--primary-color);
}

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

/* Leadership Grid */
.leadership-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.leader-card {
    text-align: center;
}

.leader-image {
    width: 120px;
    height: 120px;
    background: var(--bg-light);
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    margin: 0 auto var(--spacing-sm);
    position: relative;
    overflow: hidden;
}

.leader-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, transparent 0%, var(--primary-color) 100%);
    opacity: 0.2;
}

.leader-card h4 {
    font-size: 1.1rem;
    color: var(--secondary-color);
    margin-bottom: var(--spacing-xs);
}

.leader-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Partner Logos */
.partnerships {
    margin-top: var(--spacing-xl);
}

.partnership-stat {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.stat-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.partner-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.partner-logo {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-weight: var(--font-semibold);
    color: var(--text-secondary);
    transition: var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.partner-logo:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.dark-section .partner-logo {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(168, 153, 110, 0.3);
    color: var(--text-inverse);
}

/* Flow Diagram */
.flow-diagram {
    margin: var(--spacing-xl) auto;
    text-align: center;
    max-width: 800px;
}

.crypto-flow-svg {
    width: 100%;
    height: auto;
    max-width: 800px;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.2));
}

.dark-section .crypto-flow-svg {
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.4));
}

/* Client Stats */
.client-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

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

.stat-number {
    font-size: 3.5rem;
    font-weight: var(--font-light);
    color: var(--primary-color);
    letter-spacing: 2px;
}

.stat-label {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.section-quote {
    font-size: 1.5rem;
    font-style: italic;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.client-highlights {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.client-list {
    list-style: none;
    margin-top: var(--spacing-md);
}

.client-list li {
    padding: var(--spacing-xs) 0;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.client-list li::before {
    content: "✓ ";
    color: var(--primary-color);
    font-weight: bold;
    margin-right: var(--spacing-xs);
}

/* ============================================
   9. FORMS
   ============================================ */
.contact-form-container {
    max-width: 600px;
    margin: 0 auto;
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: var(--font-semibold);
    color: var(--secondary-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: border-color var(--transition-base);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.btn-submit {
    width: 100%;
    padding: var(--spacing-sm);
    font-size: 1.1rem;
    margin-top: var(--spacing-sm);
}

/* ============================================
   10. FOOTER
   ============================================ */
.footer {
    background: var(--secondary-color);
    color: var(--text-inverse);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    text-align: center;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background: var(--primary-color);
}

.footer-content {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.footer-logo {
    font-size: 1.8rem;
    font-weight: var(--font-light);
    color: var(--text-inverse);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 3px;
}

.footer-copyright {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* ============================================
   11. MOBILE MENU
   ============================================ */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 100001;
    position: relative;
}

.hamburger span {
    display: block;
    width: 100%;
    height: 3px;  /* Slightly thicker for better visibility */
    background: var(--secondary-color);
    border-radius: 2px;
    transition: var(--transition-base);
    transform-origin: center;
}

.hamburger.active {
    position: fixed;
    right: 20px;
    top: 20px;
}

.hamburger.active span {
    background: var(--primary-color);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100vw;
    height: 100vh;
    background: var(--secondary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    z-index: 99999;
    pointer-events: none;
    transition: opacity var(--transition-base);
    overflow-y: auto;
}

.mobile-menu-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.mobile-menu-content {
    width: 100vw;
    height: 100vh;
    text-align: center;
    position: fixed;
    top: 0;
    left: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    box-sizing: border-box;
    overflow-y: auto;
}


.mobile-nav-menu {
    list-style: none;
    padding: 0;
}

.mobile-nav-link {
    display: block;
    padding: 1.2rem;
    color: var(--text-inverse);
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: var(--font-regular);
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition-base);
    border-bottom: 1px solid rgba(168, 153, 110, 0.2);
    opacity: 0;
    transform: translateX(-20px);
}

.mobile-menu-overlay.active .mobile-nav-link {
    opacity: 1;
    transform: translateX(0);
}

.mobile-menu-overlay.active .mobile-nav-link:nth-child(1) { transition-delay: 0.05s; }
.mobile-menu-overlay.active .mobile-nav-link:nth-child(2) { transition-delay: 0.1s; }
.mobile-menu-overlay.active .mobile-nav-link:nth-child(3) { transition-delay: 0.15s; }
.mobile-menu-overlay.active .mobile-nav-link:nth-child(4) { transition-delay: 0.2s; }
.mobile-menu-overlay.active .mobile-nav-link:nth-child(5) { transition-delay: 0.25s; }
.mobile-menu-overlay.active .mobile-nav-link:nth-child(6) { transition-delay: 0.3s; }

.mobile-nav-link:hover,
.mobile-nav-link:active {
    background: rgba(168, 153, 110, 0.1);
    color: var(--primary-color);
    padding-left: 2rem;
}

.mobile-menu-actions {
    margin-top: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.lang-switcher.mobile {
    width: 100%;
    padding: var(--spacing-sm);
}

.mobile-cta {
    width: 100%;
    padding: var(--spacing-sm);
}

/* ============================================
   12. ANIMATIONS & TRANSITIONS
   ============================================ */

/* Keyframe Animations */
@keyframes fadeIn {
    from { 
        opacity: 0; 
    }
    to { 
        opacity: 1; 
    }
}

@keyframes fadeInUp {
    from { 
        opacity: 0;
        transform: translateY(30px);
    }
    to { 
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

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

/* Scroll Animation Classes */
.animate-on-scroll {
    opacity: 0;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.animated {
    opacity: 1;
}

.fade-in-up {
    animation: fadeInUp 0.8s ease forwards;
}

.fade-in-down {
    animation: fadeInDown 0.8s ease forwards;
}

.fade-in-left {
    animation: fadeInLeft 0.8s ease forwards;
}

.fade-in-right {
    animation: fadeInRight 0.8s ease forwards;
}

.scale-in {
    animation: scaleIn 0.8s ease forwards;
}

/* Hover Animations */
.philosophy-card,
.investment-card,
.bespoke-card {
    transition: transform var(--transition-base), 
                box-shadow var(--transition-base),
                border-color var(--transition-base);
}

.philosophy-card.hovering,
.investment-card.hovering,
.bespoke-card.hovering {
    transform: translateY(-10px) scale(1.02);
}

/* Button Animations */
.btn {
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
}

.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 0.6s, height 0.6s;
}

.btn:active::before {
    width: 300px;
    height: 300px;
}

/* Mobile Menu Animations - Handled by main mobile menu section */

/* Loading Animation for Stats */
.stat-number {
    transition: all 0.8s ease;
}

.stat-number.counting {
    animation: pulse 1s ease infinite;
}

/* Hero Entrance Animation */
.hero-title {
    animation: fadeInDown 1s ease;
}

.hero-subtitle {
    animation: fadeInUp 1s ease 0.3s both;
}

.hero-actions {
    animation: fadeInUp 1s ease 0.6s both;
}

/* Navigation Link Hover Effect (Already defined in Navigation section) */

/* Smooth Hover Transitions */
.partner-logo,
.index-icons span,
.stat-bubble {
    transition: all var(--transition-base);
}

/* Floating Animation for Hero Background */
@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.hero {
    background-size: 200% 200%;
    animation: gradientShift 15s ease infinite;
}

/* Reduce Motion for Accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .animate-on-scroll {
        opacity: 1;
    }
}

/* ============================================
   13. UTILITY CLASSES
   ============================================ */
.desktop-only {
    display: flex;
}

/* Language Toggle Visibility */
.lang-zh {
    display: none;
}

body.zh .lang-en {
    display: none !important;
}

body.zh .lang-zh {
    display: inline-block !important;
}

body:not(.zh) .lang-zh {
    display: none !important;
}

body:not(.zh) .lang-en {
    display: inline-block !important;
}

body.zh span.lang-zh,
body.zh div.lang-zh,
body.zh p.lang-zh {
    display: inline-block !important;
}

body.zh span.lang-en,
body.zh div.lang-en,
body.zh p.lang-en {
    display: none !important;
}

/* Subsection Styles */
.about-content {
    max-width: 1000px;
    margin: 0 auto;
}

.about-description {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.philosophy-section {
    margin: var(--spacing-xl) 0;
}

.subsection-title {
    font-size: 1.8rem;
    color: var(--secondary-color);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.leadership-section {
    margin: var(--spacing-xl) 0;
}

.section-description {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.offering-title {
    text-align: center;
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin: var(--spacing-lg) 0;
    letter-spacing: 2px;
}

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

.hero-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
}

/* Dark Section Overrides */
.dark-section .subsection-title {
    color: var(--text-inverse);
}

.dark-section p {
    color: rgba(255, 255, 255, 0.85);
}

/* ============================================
   14. MEDIA QUERIES
   ============================================ */

/* Large Desktop */
@media (max-width: 1440px) {
    .nav-container {
        max-width: 100%;
        padding: 0 var(--spacing-lg);
    }
    
    .nav-menu {
        gap: var(--spacing-lg);  /* Slightly reduce gap on smaller screens */
    }
}

/* Desktop/Tablet Styles */
@media (max-width: 1200px) {
    .nav-container {
        padding: 0 var(--spacing-md);
    }
    
    .logo {
        font-size: 1.3rem;
    }
    
    .nav-menu {
        gap: var(--spacing-md);
        max-width: 600px;
    }
    
    .nav-link {
        font-size: 0.8rem;
    }
    
    .nav-actions {
        gap: var(--spacing-sm);
    }
    
    .btn {
        padding: 0.6rem 1.5rem;
        font-size: 0.85rem;
    }
}

/* Tablet Styles */
@media (max-width: 1024px) {
    .container {
        padding: 0 30px;
    }
    
    .investment-cards {
        gap: var(--spacing-lg);
    }
    
    .data-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Navigation adjustments for tablets */
    .nav-menu {
        gap: var(--spacing-sm);
    }
    
    .nav-link {
        font-size: 0.75rem;
        letter-spacing: 0.3px;
    }
    
    .lang-switcher {
        padding: var(--spacing-xs) 0.8rem;
        font-size: 0.8rem;
    }
}

/* Mobile Styles */
@media (max-width: 768px) {
    /* Navigation */
    .hamburger {
        display: flex;
    }
    
    .nav-menu,
    .desktop-only {
        display: none;
    }
    
    .nav-container {
        padding: 0.8rem 1rem;
    }
    
    .logo {
        font-size: 1.2rem;
    }
    
    /* Hero Section */
    .hero {
        min-height: 100vh;
        padding: 80px 20px 40px;
    }
    
    .hero-title {
        font-size: clamp(1.8rem, 6vw, 2.5rem);
        line-height: 1.3;
        margin-bottom: var(--spacing-sm);
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
        line-height: 1.5;
    }
    
    /* Sections */
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 2rem;
        margin-bottom: 0.8rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
        padding: 0 20px;
    }
    
    /* Cards */
    .philosophy-cards {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .philosophy-card {
        padding: var(--spacing-md);
    }
    
    .leadership-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    
    .leader-image {
        width: 80px;
        height: 80px;
    }
    
    /* Digital Assets */
    .crypto-flow-svg {
        margin: var(--spacing-lg) 0;
    }
    
    .partner-logos {
        gap: var(--spacing-sm);
    }
    
    .partner-logo {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }
    
    /* Investment Cards */
    .investment-card {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .investment-card h3 {
        font-size: 1.3rem;
    }
    
    .data-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }
    
    .stat-bubble {
        width: 120px;
        height: 120px;
    }
    
    .stat-value {
        font-size: 1.5rem;
    }
    
    .index-icons {
        gap: var(--spacing-xs);
    }
    
    .index-icons span {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
    }
    
    /* Bespoke Cards */
    .bespoke-cards {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .bespoke-card {
        padding: var(--spacing-md);
    }
    
    /* Client Stats */
    .client-stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    /* Contact Form */
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .contact-form {
        padding: var(--spacing-lg) var(--spacing-md);
        border-radius: 15px;
    }
    
    /* Footer */
    .footer {
        padding: 50px 0 30px;
    }
}

/* Small Mobile Styles */
@media (max-width: 480px) {
    /* Hero */
    .hero-title {
        font-size: 1.6rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
        padding: 0 20px;
    }
    
    .hero-actions .btn {
        width: 100%;
    }
    
    /* Sections */
    .section {
        padding: 40px 0;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
    
    .subsection-title {
        font-size: 1.4rem;
    }
    
    /* Leadership */
    .leadership-grid {
        grid-template-columns: 1fr;
    }
    
    /* Investment */
    .investment-card h3 {
        font-size: 1.2rem;
    }
    
    .investment-card p {
        font-size: 0.95rem;
    }
    
    .data-stats {
        grid-template-columns: 1fr;
    }
    
    /* Contact */
    .contact-form {
        padding: var(--spacing-md);
    }
    
    .btn-submit {
        padding: 0.9rem;
        font-size: 1rem;
    }
}

/* Touch-friendly adjustments */
@media (hover: none) and (pointer: coarse) {
    .nav-link,
    .mobile-nav-link,
    .btn,
    .philosophy-card,
    .investment-card,
    .bespoke-card {
        -webkit-tap-highlight-color: transparent;
    }
    
    .btn:active {
        transform: scale(0.98);
    }
    
    .philosophy-card:active,
    .investment-card:active,
    .bespoke-card:active {
        transform: scale(0.98);
    }
}

/* Mobile-specific Animation Adjustments */
@media (max-width: 768px) {
    /* Faster animations on mobile for better performance */
    .animate-on-scroll {
        transition: opacity 0.4s ease, transform 0.4s ease;
    }
    
    .fade-in-up,
    .fade-in-down,
    .fade-in-left,
    .fade-in-right,
    .scale-in {
        animation-duration: 0.5s;
    }
    
    /* Reduce animation distance on mobile */
    @keyframes fadeInUpMobile {
        from { 
            opacity: 0;
            transform: translateY(20px);
        }
        to { 
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    @keyframes fadeInDownMobile {
        from {
            opacity: 0;
            transform: translateY(-20px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    .fade-in-up {
        animation-name: fadeInUpMobile;
    }
    
    .fade-in-down {
        animation-name: fadeInDownMobile;
    }
    
    /* Disable parallax on mobile for performance */
    .hero {
        transform: none !important;
        animation: gradientShift 20s ease infinite;
    }
    
    /* Simpler hover states on mobile */
    .philosophy-card,
    .investment-card,
    .bespoke-card {
        transition: transform 0.2s ease, box-shadow 0.2s ease;
    }
    
    /* Touch feedback */
    .btn:active,
    .philosophy-card:active,
    .investment-card:active,
    .bespoke-card:active {
        transform: scale(0.98);
    }
    
    /* Mobile menu animations */
    .mobile-menu-overlay {
        animation: fadeIn 0.3s ease;
    }
    
    .mobile-nav-link {
        animation-duration: 0.3s;
    }
    
    /* Optimize stat animations for mobile */
    .stat-number.counting {
        animation: none;
    }
}