/* ==========================================================================
   Beijing Xinyu Engineering Management Consulting Co., Ltd.
   Official Website Stylesheet
   Inspired by Xiaomi Website Design
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Variables & Root Configuration
   -------------------------------------------------------------------------- */
:root {
    /* Primary Colors */
    --primary-color: #ff6700;
    --primary-light: #ff8533;
    --primary-dark: #cc5200;
    --secondary-color: #1a1a1a;
    --accent-color: #00bcd4;
    --accent-light: #00e5ff;
    
    /* Neutral Colors */
    --white: #ffffff;
    --black: #000000;
    --gray-100: #f5f5f5;
    --gray-200: #eeeeee;
    --gray-300: #e0e0e0;
    --gray-400: #bdbdbd;
    --gray-500: #9e9e9e;
    --gray-600: #757575;
    --gray-700: #616161;
    --gray-800: #424242;
    --gray-900: #212121;
    
    /* Gradient Colors */
    --gradient-primary: linear-gradient(135deg, #ff6700 0%, #ff8533 50%, #ffa500 100%);
    --gradient-dark: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    --gradient-hero: linear-gradient(135deg, #ff6700 0%, #ff4081 100%);
    --gradient-accent: linear-gradient(135deg, #00bcd4 0%, #00e5ff 100%);
    
    /* Typography */
    --font-primary: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-display: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    
    /* Font Sizes */
    --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;
    --font-size-7xl: 4.5rem;
    
    /* 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;
    --spacing-5xl: 8rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.25);
    --shadow-primary: 0 10px 40px rgba(255, 103, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(255, 103, 0, 0.5);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Z-index layers */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-tooltip: 600;
    --z-toast: 700;
    
    /* Container widths */
    --container-max: 1400px;
    --container-padding: 1.5rem;
}

/* --------------------------------------------------------------------------
   CSS Reset & 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(--gray-800);
    background-color: var(--white);
    overflow-x: hidden;
    min-height: 100vh;
}

body.dark-mode {
    color: var(--gray-200);
    background-color: var(--secondary-color);
}

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

ul, ol {
    list-style: none;
}

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

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

button {
    cursor: pointer;
    border: none;
    background: none;
}

/* --------------------------------------------------------------------------
   Utility Classes
   -------------------------------------------------------------------------- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section {
    padding: var(--spacing-5xl) 0;
}

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

.section-gray {
    background-color: var(--gray-100);
}

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

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }

.grid { display: grid; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* --------------------------------------------------------------------------
   Typography Styles
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--secondary-color);
}

h1 { font-size: var(--font-size-6xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

.dark-mode h1,
.dark-mode h2,
.dark-mode h3,
.dark-mode h4,
.dark-mode h5,
.dark-mode h6 {
    color: var(--white);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    margin: var(--spacing-lg) auto 0;
    border-radius: var(--radius-full);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--gray-600);
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--spacing-3xl);
}

.dark-mode .section-subtitle {
    color: var(--gray-400);
}

/* --------------------------------------------------------------------------
   Button Styles
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    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;
    border: 2px solid transparent;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition-slow);
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

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

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

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

.btn-white:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

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

.btn-dark:hover {
    background: var(--gray-800);
}

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

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

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

/* --------------------------------------------------------------------------
   Navigation Styles
   -------------------------------------------------------------------------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

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

.dark-mode .header {
    background: rgba(26, 26, 26, 0.95);
}

.dark-mode .header.scrolled {
    background: rgba(26, 26, 26, 0.98);
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav-logo {
    width: 50px;
    height: 50px;
}

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

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

.nav-link {
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--gray-700);
    position: relative;
    padding: var(--spacing-sm) 0;
}

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

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--gray-800);
    transition: var(--transition-base);
}

.dark-mode .nav-toggle span {
    background: var(--white);
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        justify-content: flex-start;
        padding: var(--spacing-5xl) var(--spacing-xl);
        box-shadow: var(--shadow-2xl);
        transition: var(--transition-slow);
        z-index: var(--z-modal);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .dark-mode .nav-menu {
        background: var(--secondary-color);
    }
    
    .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 Styles
   -------------------------------------------------------------------------- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: var(--gradient-hero);
    padding-top: 80px;
}

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

.hero-bg-shape {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    animation: float 6s ease-in-out infinite;
}

.hero-bg-shape:nth-child(1) {
    width: 400px;
    height: 400px;
    top: -100px;
    right: -100px;
    animation-delay: 0s;
}

.hero-bg-shape:nth-child(2) {
    width: 300px;
    height: 300px;
    bottom: -50px;
    left: -50px;
    animation-delay: 2s;
}

.hero-bg-shape:nth-child(3) {
    width: 200px;
    height: 200px;
    top: 50%;
    left: 50%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
}

.hero-text {
    color: var(--white);
}

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    animation: slideInLeft 1s ease-out;
}

.hero-title {
    font-size: var(--font-size-7xl);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-xl);
    animation: slideInLeft 1s ease-out 0.2s both;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    opacity: 0.9;
    margin-bottom: var(--spacing-2xl);
    animation: slideInLeft 1s ease-out 0.4s both;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
    animation: slideInLeft 1s ease-out 0.6s both;
}

.hero-image {
    position: relative;
    animation: slideInRight 1s ease-out 0.4s both;
}

.hero-image-container {
    position: relative;
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
}

.hero-image-frame {
    position: absolute;
    top: -20px;
    left: -20px;
    right: -20px;
    bottom: -20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-xl);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.3;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.5;
    }
}

.hero-app-preview {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
    animation: float 3s ease-in-out infinite;
}

.hero-app-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto var(--spacing-xl);
    background: var(--white);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
}

.hero-app-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.hero-app-desc {
    font-size: var(--font-size-base);
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-3xl);
    animation: slideInUp 1s ease-out 0.8s both;
}

.hero-stat {
    text-align: center;
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
}

.hero-stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    display: block;
}

.hero-stat-label {
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

/* Animations */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Scroll Down Indicator */
.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    animation: bounce 2s infinite;
}

.hero-scroll-icon {
    width: 30px;
    height: 50px;
    border: 2px solid var(--white);
    border-radius: 15px;
    position: relative;
}

.hero-scroll-dot {
    width: 6px;
    height: 10px;
    background: var(--white);
    border-radius: 3px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollDot 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

@keyframes scrollDot {
    0% {
        top: 8px;
        opacity: 1;
    }
    100% {
        top: 30px;
        opacity: 0;
    }
}

/* Mobile Hero Styles */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: var(--font-size-5xl);
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-image {
        order: -1;
    }
    
    .hero-image-container {
        max-width: 400px;
    }
}

@media (max-width: 768px) {
    .hero {
        min-height: auto;
        padding: 120px 0 80px;
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
    }
}

/* --------------------------------------------------------------------------
   Services Section Styles
   -------------------------------------------------------------------------- */
.services {
    background: var(--gray-100);
}

.dark-mode .services {
    background: var(--gray-900);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
}

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

.dark-mode .service-card {
    background: var(--gray-800);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    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(-10px);
    box-shadow: var(--shadow-xl);
}

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

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: var(--shadow-glow);
}

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

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

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

.service-desc {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    line-height: 1.6;
}

.dark-mode .service-desc {
    color: var(--gray-400);
}

@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

/* --------------------------------------------------------------------------
   App Showcase Section Styles
   -------------------------------------------------------------------------- */
.app-showcase {
    background: var(--secondary-color);
    color: var(--white);
    overflow: hidden;
}

.app-showcase-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
}

.app-showcase-text h2 {
    color: var(--white);
    margin-bottom: var(--spacing-xl);
}

.app-showcase-text h2::after {
    margin: var(--spacing-lg) 0 0;
}

.app-showcase-desc {
    font-size: var(--font-size-lg);
    line-height: 1.8;
    margin-bottom: var(--spacing-2xl);
    opacity: 0.9;
}

.app-features-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
}

.app-feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
}

.app-feature-item:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateX(10px);
}

.app-feature-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.app-feature-icon svg {
    width: 20px;
    height: 20px;
    fill: var(--white);
}

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

.app-feature-text p {
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

.app-showcase-visual {
    position: relative;
}

.app-phone-mockup {
    position: relative;
    max-width: 400px;
    margin: 0 auto;
}

.phone-frame {
    background: var(--gray-900);
    border-radius: 40px;
    padding: 15px;
    box-shadow: var(--shadow-2xl);
}

.phone-screen {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 30px;
    height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.phone-notch {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 150px;
    height: 30px;
    background: var(--gray-900);
    border-radius: 0 0 20px 20px;
}

.app-screen-content {
    text-align: center;
    color: var(--white);
}

.app-screen-icon {
    width: 100px;
    height: 100px;
    background: var(--white);
    border-radius: var(--radius-xl);
    margin: 0 auto var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.app-screen-icon svg {
    width: 50px;
    height: 50px;
    fill: var(--primary-color);
}

.app-screen-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.app-screen-desc {
    font-size: var(--font-size-base);
    opacity: 0.9;
}

.floating-elements {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
}

.floating-element {
    position: absolute;
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    animation: floatElement 3s ease-in-out infinite;
}

.floating-element:nth-child(1) {
    top: 10%;
    left: -20%;
    animation-delay: 0s;
}

.floating-element:nth-child(2) {
    top: 60%;
    right: -25%;
    animation-delay: 1s;
}

.floating-element:nth-child(3) {
    bottom: 20%;
    left: -15%;
    animation-delay: 2s;
}

@keyframes floatElement {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(5deg);
    }
}

@media (max-width: 1024px) {
    .app-showcase-content {
        grid-template-columns: 1fr;
    }
    
    .app-showcase-visual {
        order: -1;
    }
    
    .phone-frame {
        max-width: 300px;
        margin: 0 auto;
    }
    
    .phone-screen {
        height: 450px;
    }
}

/* --------------------------------------------------------------------------
   About/Culture Section Styles
   -------------------------------------------------------------------------- */
.about {
    background: var(--white);
}

.dark-mode .about {
    background: var(--gray-900);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image-main {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.about-image-overlay {
    position: absolute;
    bottom: -30px;
    right: -30px;
    background: var(--gradient-primary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    color: var(--white);
    box-shadow: var(--shadow-xl);
}

.about-image-overlay h3 {
    color: var(--white);
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-xs);
}

.about-image-overlay p {
    font-size: var(--font-size-sm);
}

.about-text h2 {
    margin-bottom: var(--spacing-xl);
}

.about-text h2::after {
    margin: var(--spacing-lg) 0 0;
}

.about-desc {
    font-size: var(--font-size-lg);
    line-height: 1.8;
    margin-bottom: var(--spacing-2xl);
    color: var(--gray-700);
}

.dark-mode .about-desc {
    color: var(--gray-300);
}

.about-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.about-feature {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
}

.dark-mode .about-feature {
    background: var(--gray-800);
}

.about-feature:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

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

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

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

.about-feature-content p {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
}

.dark-mode .about-feature-content p {
    color: var(--gray-400);
}

@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .about-image {
        order: -1;
    }
}

/* --------------------------------------------------------------------------
   Stats Section Styles
   -------------------------------------------------------------------------- */
.stats {
    background: var(--gradient-primary);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.stats::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    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");
    opacity: 0.5;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-2xl);
    position: relative;
    z-index: 1;
}

.stat-item {
    text-align: center;
    padding: var(--spacing-2xl);
}

.stat-icon {
    width: 70px;
    height: 70px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    margin: 0 auto var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-base);
}

.stat-item:hover .stat-icon {
    transform: scale(1.1);
    background: rgba(255, 255, 255, 0.3);
}

.stat-icon svg {
    width: 35px;
    height: 35px;
    fill: var(--white);
}

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

.stat-label {
    font-size: var(--font-size-lg);
    opacity: 0.9;
}

@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

/* --------------------------------------------------------------------------
   News Section Styles
   -------------------------------------------------------------------------- */
.news {
    background: var(--gray-100);
}

.dark-mode .news {
    background: var(--gray-900);
}

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

.news-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.dark-mode .news-card {
    background: var(--gray-800);
}

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

.news-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

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

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

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

.news-date {
    font-size: var(--font-size-sm);
    color: var(--gray-500);
    margin-bottom: var(--spacing-sm);
}

.dark-mode .news-date {
    color: var(--gray-400);
}

.news-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--secondary-color);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

.news-excerpt {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.dark-mode .news-excerpt {
    color: var(--gray-400);
}

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

.news-link svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
    transition: var(--transition-base);
}

.news-link:hover svg {
    transform: translateX(5px);
}

@media (max-width: 1024px) {
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

/* --------------------------------------------------------------------------
   CTA Section Styles
   -------------------------------------------------------------------------- */
.cta {
    background: var(--gradient-hero);
    color: var(--white);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta::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: rotateBg 20s linear infinite;
}

@keyframes rotateBg {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

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

.cta h2 {
    color: var(--white);
    font-size: var(--font-size-5xl);
    margin-bottom: var(--spacing-lg);
}

.cta h2::after {
    background: var(--white);
}

.cta p {
    font-size: var(--font-size-xl);
    max-width: 600px;
    margin: 0 auto var(--spacing-2xl);
    opacity: 0.9;
}

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

/* --------------------------------------------------------------------------
   Contact Section Styles
   -------------------------------------------------------------------------- */
.contact {
    background: var(--white);
}

.dark-mode .contact {
    background: var(--gray-900);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
}

.contact-info {
    padding: var(--spacing-2xl);
}

.contact-info h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-xl);
}

.contact-info p {
    color: var(--gray-600);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.8;
}

.dark-mode .contact-info p {
    color: var(--gray-400);
}

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

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
}

.dark-mode .contact-item {
    background: var(--gray-800);
}

.contact-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-md);
}

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

.contact-item-icon svg {
    width: 25px;
    height: 25px;
    fill: var(--white);
}

.contact-item-content h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.contact-item-content p {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    margin: 0;
}

.dark-mode .contact-item-content p {
    color: var(--gray-400);
}

.contact-form {
    background: var(--gray-100);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
}

.dark-mode .contact-form {
    background: var(--gray-800);
}

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

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--gray-700);
}

.dark-mode .form-group label {
    color: var(--gray-300);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    transition: var(--transition-base);
    background: var(--white);
}

.dark-mode .form-group input,
.dark-mode .form-group textarea,
.dark-mode .form-group select {
    background: var(--gray-700);
    border-color: var(--gray-600);
    color: var(--white);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(255, 103, 0, 0.1);
}

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

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

@media (max-width: 1024px) {
    .contact-content {
        grid-template-columns: 1fr;
    }
}

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

/* --------------------------------------------------------------------------
   Footer Styles
   -------------------------------------------------------------------------- */
.footer {
    background: var(--secondary-color);
    color: var(--white);
    padding-top: var(--spacing-4xl);
}

.footer-main {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: var(--spacing-3xl);
    padding-bottom: var(--spacing-3xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

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

.footer-logo svg {
    width: 60px;
    height: 60px;
}

.footer-logo h3 {
    color: var(--white);
    font-size: var(--font-size-xl);
}

.footer-desc {
    color: var(--gray-400);
    line-height: 1.8;
    font-size: var(--font-size-sm);
}

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

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

.footer-social a:hover {
    background: var(--primary-color);
    transform: translateY(-5px);
}

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

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

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

.footer-links a {
    color: var(--gray-400);
    font-size: var(--font-size-sm);
    transition: var(--transition-base);
}

.footer-links a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    color: var(--gray-400);
    font-size: var(--font-size-sm);
}

.footer-contact-item svg {
    width: 18px;
    height: 18px;
    fill: var(--primary-color);
    flex-shrink: 0;
    margin-top: 3px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xl) 0;
    font-size: var(--font-size-sm);
    color: var(--gray-400);
}

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

.footer-legal a {
    color: var(--gray-400);
}

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

@media (max-width: 1024px) {
    .footer-main {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .footer-main {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

/* --------------------------------------------------------------------------
   Legal Pages Styles
   -------------------------------------------------------------------------- */
.legal-page {
    padding-top: 100px;
    padding-bottom: var(--spacing-4xl);
}

.legal-header {
    background: var(--gradient-primary);
    color: var(--white);
    padding: var(--spacing-4xl) 0;
    text-align: center;
}

.legal-header h1 {
    color: var(--white);
    font-size: var(--font-size-5xl);
    margin-bottom: var(--spacing-lg);
}

.legal-header p {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

.legal-content {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-4xl) var(--container-padding);
}

.legal-toc {
    background: var(--gray-100);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-3xl);
}

.dark-mode .legal-toc {
    background: var(--gray-800);
}

.legal-toc h2 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-lg);
}

.legal-toc ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.legal-toc a {
    color: var(--primary-color);
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.legal-toc a:hover {
    text-decoration: underline;
}

.legal-section {
    margin-bottom: var(--spacing-3xl);
}

.legal-section h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--gray-200);
}

.dark-mode .legal-section h2 {
    border-color: var(--gray-700);
}

.legal-section h3 {
    font-size: var(--font-size-xl);
    margin: var(--spacing-xl) 0 var(--spacing-md);
}

.legal-section p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
    color: var(--gray-700);
}

.dark-mode .legal-section p {
    color: var(--gray-300);
}

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

.legal-section li {
    margin-bottom: var(--spacing-sm);
    line-height: 1.8;
    color: var(--gray-700);
    list-style: disc;
}

.dark-mode .legal-section li {
    color: var(--gray-300);
}

.legal-section a {
    color: var(--primary-color);
}

.legal-section a:hover {
    text-decoration: underline;
}

.legal-updated {
    font-size: var(--font-size-sm);
    color: var(--gray-500);
    margin-bottom: var(--spacing-2xl);
    padding: var(--spacing-md);
    background: var(--gray-100);
    border-radius: var(--radius-md);
}

.dark-mode .legal-updated {
    background: var(--gray-800);
    color: var(--gray-400);
}

/* --------------------------------------------------------------------------
   Page Header Styles
   -------------------------------------------------------------------------- */
.page-header {
    background: var(--gradient-primary);
    color: var(--white);
    padding: var(--spacing-5xl) 0 var(--spacing-4xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    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 2z' fill='%23ffffff' fill-opacity='0.05' fill-rule='evenodd'/%3E%3C/svg%3E");
    opacity: 0.3;
}

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

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

.page-header p {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    max-width: 700px;
    margin: 0 auto;
}

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

.breadcrumb a:hover {
    opacity: 1;
}

/* --------------------------------------------------------------------------
   Animation Classes
   -------------------------------------------------------------------------- */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

.animate-delay-1 { transition-delay: 0.1s; }
.animate-delay-2 { transition-delay: 0.2s; }
.animate-delay-3 { transition-delay: 0.3s; }
.animate-delay-4 { transition-delay: 0.4s; }
.animate-delay-5 { transition-delay: 0.5s; }
.animate-delay-6 { transition-delay: 0.6s; }

/* --------------------------------------------------------------------------
   Custom Scrollbar
   -------------------------------------------------------------------------- */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--gray-200);
}

.dark-mode ::-webkit-scrollbar-track {
    background: var(--gray-800);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* --------------------------------------------------------------------------
   Print Styles
   -------------------------------------------------------------------------- */
@media print {
    .header,
    .footer,
    .hero-scroll,
    .btn {
        display: none !important;
    }
    
    body {
        color: #000;
        background: #fff;
    }
    
    .section {
        padding: 20px 0;
    }
}