/* =====================================================
   Beijing Sancheng Zhiyuan Enterprise Management Consulting Co., Ltd.
   Main Stylesheet - Premium BMW-inspired Design
   ===================================================== */

/* CSS Custom Properties (Variables) */
:root {
    /* Primary Colors */
    --primary-color: #0066b3;
    --primary-dark: #004c82;
    --primary-light: #3399cc;
    --secondary-color: #e31837;
    --accent-color: #ff6b35;
    
    /* Neutral Colors */
    --black-color: #000000;
    --dark-gray: #1a1a1a;
    --medium-gray: #4a4a4a;
    --light-gray: #f5f5f5;
    --white-color: #ffffff;
    
    /* Gradient Colors */
    --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    --gradient-hero: linear-gradient(135deg, rgba(0, 102, 179, 0.95) 0%, rgba(0, 76, 130, 0.9) 100%);
    --gradient-dark: linear-gradient(180deg, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.4) 100%);
    
    /* Typography */
    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-secondary: 'Arial', 'Helvetica', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
    --radius-full: 50%;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 16px 32px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 20px rgba(0, 102, 179, 0.3);
    
    /* Transitions */
    --transition-fast: all 0.2s ease;
    --transition-base: all 0.3s ease;
    --transition-slow: all 0.5s ease;
    --transition-smooth: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    
    /* Z-index layers */
    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 1000;
    --z-modal: 10000;
    --z-tooltip: 100000;
    
    /* Container widths */
    --container-max: 1400px;
    --container-lg: 1200px;
    --container-md: 992px;
    --container-sm: 768px;
}

/* =====================================================
   CSS Reset and Base Styles
   ===================================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: var(--white-color);
    overflow-x: hidden;
}

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

ul, ol {
    list-style: none;
}

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

button, input, textarea, select {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
    background: none;
}

button {
    cursor: pointer;
}

/* =====================================================
   Container and Layout
   ===================================================== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-4xl) 0;
    position: relative;
}

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

.section-light {
    background-color: var(--light-gray);
}

.grid {
    display: grid;
    gap: var(--spacing-xl);
}

.flex {
    display: flex;
}

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

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

/* =====================================================
   Typography
   ===================================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
}

h1 {
    font-size: var(--font-size-5xl);
}

h2 {
    font-size: var(--font-size-4xl);
}

h3 {
    font-size: var(--font-size-3xl);
}

h4 {
    font-size: var(--font-size-2xl);
}

h5 {
    font-size: var(--font-size-xl);
}

h6 {
    font-size: var(--font-size-lg);
}

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

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

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

.text-accent {
    color: var(--accent-color);
}

/* =====================================================
   Header and Navigation
   ===================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: var(--z-sticky);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    transition: var(--transition-base);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
}

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

.logo svg {
    width: 50px;
    height: 50px;
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-2xl);
}

.nav-link {
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--dark-gray);
    position: relative;
    padding: var(--spacing-sm) 0;
}

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

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

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

/* Mobile Navigation */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-sm);
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--dark-gray);
    transition: var(--transition-base);
    border-radius: var(--radius-sm);
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        background: var(--white-color);
        flex-direction: column;
        padding: var(--spacing-xl);
        gap: var(--spacing-lg);
        transform: translateY(-150%);
        opacity: 0;
        transition: var(--transition-smooth);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
}

/* =====================================================
   Hero Section
   ===================================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--gradient-hero);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, 
        rgba(0, 102, 179, 0.9) 0%, 
        rgba(0, 76, 130, 0.85) 50%, 
        rgba(0, 51, 102, 0.9) 100%);
}

.hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        linear-gradient(45deg, transparent 48%, rgba(255, 255, 255, 0.05) 50%, transparent 52%);
    background-size: 100% 100%, 100% 100%, 60px 60px;
    animation: heroPatternMove 20s linear infinite;
}

@keyframes heroPatternMove {
    0% { background-position: 0 0, 0 0, 0 0; }
    100% { background-position: 0 0, 0 0, 60px 60px; }
}

.hero-content {
    text-align: center;
    color: var(--white-color);
    z-index: 2;
    max-width: 900px;
    padding: 0 var(--spacing-lg);
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    font-weight: 500;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

.hero-title {
    font-size: var(--font-size-6xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
    line-height: 1.1;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-description {
    font-size: var(--font-size-xl);
    line-height: 1.8;
    margin-bottom: var(--spacing-2xl);
    opacity: 0.95;
}

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

/* =====================================================
   Buttons
   ===================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-2xl);
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white-color);
    box-shadow: 0 4px 15px rgba(0, 102, 179, 0.3);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 102, 179, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--white-color);
    border: 2px solid var(--white-color);
}

.btn-secondary:hover {
    background: var(--white-color);
    color: var(--primary-color);
}

.btn-accent {
    background: var(--accent-color);
    color: var(--white-color);
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.btn-accent:hover {
    background: #e55a2b;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
}

.btn-lg {
    padding: var(--spacing-lg) var(--spacing-3xl);
    font-size: var(--font-size-lg);
}

.btn-icon {
    width: 50px;
    height: 50px;
    padding: 0;
    border-radius: var(--radius-full);
}

/* Button Glow Effect */
.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

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

/* =====================================================
   Cards
   ===================================================== */
.card {
    background: var(--white-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: var(--transition-smooth);
    position: relative;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.card-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: var(--transition-smooth);
}

.card:hover .card-image {
    transform: scale(1.1);
}

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

.card-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
}

.card:hover .card-icon {
    transform: rotateY(180deg);
    background: var(--secondary-color);
}

.card-icon svg {
    width: 40px;
    height: 40px;
    fill: var(--white-color);
}

.card-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--dark-gray);
}

.card-description {
    font-size: var(--font-size-base);
    color: var(--medium-gray);
    line-height: 1.7;
}

/* =====================================================
   Section Headers
   ===================================================== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-label {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(0, 102, 179, 0.1);
    border-radius: var(--radius-xl);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-lg);
}

.section-description {
    font-size: var(--font-size-lg);
    color: var(--medium-gray);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

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

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

/* =====================================================
   Services Section
   ===================================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-2xl);
}

.service-card {
    background: var(--white-color);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

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

.service-card:hover::before {
    transform: scaleX(1);
}

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

.service-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 102, 179, 0.1) 0%, rgba(0, 102, 179, 0.2) 100%);
    border-radius: var(--radius-full);
    transition: var(--transition-base);
}

.service-card:hover .service-icon {
    background: var(--gradient-primary);
    transform: scale(1.1) rotate(10deg);
}

.service-icon svg {
    width: 50px;
    height: 50px;
    fill: var(--primary-color);
    transition: var(--transition-base);
}

.service-card:hover .service-icon svg {
    fill: var(--white-color);
}

.service-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-md);
}

.service-description {
    font-size: var(--font-size-base);
    color: var(--medium-gray);
    line-height: 1.7;
}

/* =====================================================
   Statistics Section
   ===================================================== */
.stats-section {
    background: var(--gradient-primary);
    padding: var(--spacing-4xl) 0;
    position: relative;
    overflow: hidden;
}

.stats-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: statsPulse 10s ease-in-out infinite;
}

@keyframes statsPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    position: relative;
    z-index: 1;
}

.stat-item {
    text-align: center;
    color: var(--white-color);
}

.stat-number {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    display: block;
}

.stat-label {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* =====================================================
   App Showcase Section
   ===================================================== */
.app-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.app-content h2 {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-xl);
}

.app-content p {
    font-size: var(--font-size-lg);
    color: var(--medium-gray);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.app-features {
    display: grid;
    gap: var(--spacing-lg);
}

.app-feature {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--light-gray);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
}

.app-feature:hover {
    background: var(--white-color);
    box-shadow: var(--shadow-md);
    transform: translateX(10px);
}

.app-feature-icon {
    width: 50px;
    height: 50px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
}

.app-feature-icon svg {
    width: 25px;
    height: 25px;
    fill: var(--white-color);
}

.app-feature-content h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.app-feature-content p {
    font-size: var(--font-size-sm);
    color: var(--medium-gray);
    margin: 0;
}

.app-screenshots {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
}

.app-phone-mockup {
    width: 280px;
    height: 500px;
    background: var(--dark-gray);
    border-radius: 40px;
    padding: 15px;
    box-shadow: var(--shadow-xl);
    position: relative;
    animation: phoneFloat 3s ease-in-out infinite;
}

@keyframes phoneFloat {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.app-phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white-color);
    font-size: var(--font-size-xl);
    text-align: center;
}

/* =====================================================
   Testimonials Section
   ===================================================== */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-2xl);
}

.testimonial-card {
    background: var(--white-color);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    position: relative;
    transition: var(--transition-smooth);
}

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

.testimonial-quote {
    font-size: var(--font-size-4xl);
    color: var(--primary-color);
    opacity: 0.2;
    position: absolute;
    top: 20px;
    left: 20px;
    font-family: serif;
}

.testimonial-text {
    font-size: var(--font-size-base);
    color: var(--medium-gray);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
    font-style: italic;
    position: relative;
    z-index: 1;
}

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

.testimonial-avatar {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white-color);
    font-size: var(--font-size-2xl);
    font-weight: 700;
}

.testimonial-info h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.testimonial-info p {
    font-size: var(--font-size-sm);
    color: var(--medium-gray);
    margin: 0;
}

/* =====================================================
   CTA Section
   ===================================================== */
.cta-section {
    background: var(--gradient-primary);
    padding: var(--spacing-4xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-content h2 {
    font-size: var(--font-size-4xl);
    color: var(--white-color);
    margin-bottom: var(--spacing-lg);
}

.cta-content p {
    font-size: var(--font-size-xl);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-2xl);
}

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

/* =====================================================
   Footer
   ===================================================== */
.footer {
    background: var(--dark-gray);
    color: var(--white-color);
    padding: var(--spacing-4xl) 0 var(--spacing-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-3xl);
}

.footer-about {
    max-width: 400px;
}

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

.footer-logo svg {
    width: 50px;
    height: 50px;
}

.footer-logo span {
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.footer-description {
    font-size: var(--font-size-base);
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

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

.social-link {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    transition: var(--transition-base);
}

.social-link:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.social-link svg {
    width: 20px;
    height: 20px;
    fill: var(--white-color);
}

.footer-column h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--white-color);
}

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

.footer-link {
    font-size: var(--font-size-base);
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition-base);
}

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

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-contact-item svg {
    width: 20px;
    height: 20px;
    fill: var(--primary-light);
    flex-shrink: 0;
    margin-top: 3px;
}

.footer-contact-item p {
    font-size: var(--font-size-base);
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
}

.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-lg);
}

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

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

.footer-legal a {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.6);
    transition: var(--transition-base);
}

.footer-legal a:hover {
    color: var(--primary-light);
}

/* =====================================================
   Page Header (Inner Pages)
   ===================================================== */
.page-header {
    background: var(--gradient-hero);
    padding: 180px 0 100px;
    text-align: center;
    color: var(--white-color);
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%23ffffff' fill-opacity='0.05' fill-rule='evenodd'/%3E%3C/svg%3E");
}

.page-header-content {
    position: relative;
    z-index: 1;
}

.page-header h1 {
    font-size: var(--font-size-5xl);
    margin-bottom: var(--spacing-md);
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    font-size: var(--font-size-base);
    opacity: 0.9;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

/* =====================================================
   Timeline (Culture Page)
   ===================================================== */
.timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    width: 4px;
    height: 100%;
    background: var(--gradient-primary);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-3xl);
    width: 50%;
    padding-right: var(--spacing-3xl);
}

.timeline-item:nth-child(even) {
    margin-left: 50%;
    padding-right: 0;
    padding-left: var(--spacing-3xl);
}

.timeline-content {
    background: var(--white-color);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    position: relative;
    transition: var(--transition-smooth);
}

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

.timeline-date {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--primary-color);
    background: rgba(0, 102, 179, 0.1);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-md);
}

.timeline-content h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

.timeline-content p {
    font-size: var(--font-size-base);
    color: var(--medium-gray);
    margin: 0;
}

.timeline-dot {
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: var(--radius-full);
    top: 30px;
    right: -10px;
    border: 4px solid var(--white-color);
    box-shadow: var(--shadow-md);
}

.timeline-item:nth-child(even) .timeline-dot {
    left: -10px;
    right: auto;
}

/* =====================================================
   Contact Form
   ===================================================== */
.contact-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.contact-form {
    background: var(--white-color);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

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

.form-group label {
    display: block;
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--dark-gray);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--spacing-md);
    font-size: var(--font-size-base);
    border: 2px solid #e0e0e0;
    border-radius: var(--radius-md);
    transition: var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 179, 0.1);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-button {
    width: 100%;
}

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

.contact-info-card {
    background: var(--white-color);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
}

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

.contact-info-card h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.contact-info-card h3 svg {
    width: 30px;
    height: 30px;
    fill: var(--primary-color);
}

.contact-info-card p {
    font-size: var(--font-size-base);
    color: var(--medium-gray);
    margin: 0;
    line-height: 1.8;
}

/* =====================================================
   News Cards
   ===================================================== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-2xl);
}

.news-card {
    background: var(--white-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: var(--transition-smooth);
}

.news-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.news-image {
    width: 100%;
    height: 220px;
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
}

.news-image::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    transform: translate(-50%, -50%);
}

.news-date {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    background: var(--white-color);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--primary-color);
}

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

.news-category {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-sm);
}

.news-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--dark-gray);
    transition: var(--transition-base);
}

.news-card:hover .news-title {
    color: var(--primary-color);
}

.news-excerpt {
    font-size: var(--font-size-base);
    color: var(--medium-gray);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.news-link {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--primary-color);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.news-link:hover {
    gap: var(--spacing-md);
}

.news-link svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

/* =====================================================
   Legal Pages (Privacy Policy & Terms)
   ===================================================== */
.legal-content {
    max-width: 900px;
    margin: 0 auto;
    background: var(--white-color);
    padding: var(--spacing-3xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.legal-section {
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-2xl);
    border-bottom: 2px solid var(--light-gray);
}

.legal-section:last-child {
    border-bottom: none;
}

.legal-section h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-lg);
    color: var(--dark-gray);
}

.legal-section h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}

.legal-section p {
    font-size: var(--font-size-base);
    color: var(--medium-gray);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.legal-section ul {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-xl);
}

.legal-section ul li {
    font-size: var(--font-size-base);
    color: var(--medium-gray);
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
    position: relative;
    padding-left: var(--spacing-md);
}

.legal-section ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.legal-section ol {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-xl);
    list-style: decimal;
}

.legal-section ol li {
    font-size: var(--font-size-base);
    color: var(--medium-gray);
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-sm);
}

/* Ad Platform List */
.ad-platform-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.ad-platform-item {
    background: var(--light-gray);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: var(--dark-gray);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.ad-platform-item::before {
    content: '✓';
    display: flex;
    align-items: center;
    justify-content: center;
    width: 25px;
    height: 25px;
    background: var(--primary-color);
    color: var(--white-color);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    flex-shrink: 0;
}

/* =====================================================
   Scroll to Top Button
   ===================================================== */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    z-index: var(--z-sticky);
    box-shadow: var(--shadow-lg);
}

.scroll-top.active {
    opacity: 1;
    visibility: visible;
}

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

.scroll-top svg {
    width: 24px;
    height: 24px;
    fill: var(--white-color);
}

/* =====================================================
   Loading Animation
   ===================================================== */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--white-color);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    transition: opacity 0.5s, visibility 0.5s;
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader {
    width: 60px;
    height: 60px;
    border: 4px solid var(--light-gray);
    border-top-color: var(--primary-color);
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* =====================================================
   Utility Classes
   ===================================================== */
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }
.mt-5 { margin-top: var(--spacing-2xl); }

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

.py-1 { padding-top: var(--spacing-sm); padding-bottom: var(--spacing-sm); }
.py-2 { padding-top: var(--spacing-md); padding-bottom: var(--spacing-md); }
.py-3 { padding-top: var(--spacing-lg); padding-bottom: var(--spacing-lg); }
.py-4 { padding-top: var(--spacing-xl); padding-bottom: var(--spacing-xl); }
.py-5 { padding-top: var(--spacing-2xl); padding-bottom: var(--spacing-2xl); }

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

/* =====================================================
   Additional Premium Effects
   ===================================================== */

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

/* Gradient Text */
.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Shimmer Effect */
.shimmer {
    position: relative;
    overflow: hidden;
}

.shimmer::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: shimmer 2s infinite;
}

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

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

.pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* Bounce Animation */
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-20px); }
    60% { transform: translateY(-10px); }
}

.bounce {
    animation: bounce 2s ease-in-out infinite;
}

/* Floating Animation */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.float {
    animation: float 3s ease-in-out infinite;
}

/* Rotate Animation */
@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.rotate {
    animation: rotate 10s linear infinite;
}

/* Gradient Animation */
@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.gradient-animate {
    background-size: 200% 200%;
    animation: gradientShift 5s ease infinite;
}