/* ========================================
   Yigao - Industrial Pearlescent Pigments
   Global Styles - Modern Clean Design
   ======================================== */

/* ========================================
   Full Width Mode - Override Bootstrap Container
   ======================================== */
.container {
    max-width: 100% !important;
    width: 100%;
    padding-left: 24px;
    padding-right: 24px;
}

.container-fluid {
    width: 100%;
    padding-left: 0;
    padding-right: 0;
}

/* Make row full width */
.row {
    width: 100%;
    margin-left: 0;
    margin-right: 0;
}

/* Make all columns full width */
.row > [class*="col-"] {
    padding-left: 12px;
    padding-right: 12px;
}

/* ========================================
   CSS Variables
   ======================================== */
:root {
    /* Primary Colors - Deep Blue & Gold Theme */
    --color-primary: #0f172a;
    --color-secondary: #1e293b;
    --color-accent: #eab308;
    --color-accent-light: #fde047;
    --color-accent-dark: #ca8a04;
    
    /* Neutral Colors */
    --color-dark: #020617;
    --color-dark-light: #334155;
    --color-light: #ffffff;
    --color-light-gray: #f1f5f9;
    --color-gray: #64748b;
    --color-gray-dark: #334155;
    --color-border: #e2e8f0;
    
    /* Pearl Effect Colors */
    --pearl-white: #ffffff;
    --pearl-silver: #cbd5e1;
    --pearl-gold: #eab308;
    
    /* Typography */
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 5rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --transition-fast: 150ms;
    --transition-normal: 300ms;
    --transition-slow: 500ms;
}

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

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

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-gray-dark);
    background-color: var(--color-light);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-primary);
}

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

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

ul, ol {
    list-style: none;
}

/* ========================================
   Typography
   ======================================== */
.text-primary { color: var(--color-primary) !important; }
.text-secondary { color: var(--color-secondary) !important; }
.text-accent { color: var(--color-accent) !important; }
.text-gray { color: var(--color-gray) !important; }
.text-white { color: var(--pearl-white) !important; }

.bg-primary { background-color: var(--color-primary) !important; }
.bg-secondary { background-color: var(--color-secondary) !important; }
.bg-light { background-color: var(--color-light) !important; }
.bg-light-gray { background-color: var(--color-light-gray) !important; }

/* ========================================
   Navigation
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1030;
    padding: 1rem 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    transition: all var(--transition-normal);
}

.navbar-brand {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent) !important;
    letter-spacing: -0.5px;
}

.navbar-brand span {
    color: var(--color-primary);
}

.nav-link {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-dark) !important;
    padding: 0.5rem 1rem !important;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-accent) !important;
    background-color: rgba(234, 179, 8, 0.1);
}

.navbar-toggler {
    border: 2px solid var(--color-accent);
    padding: 0.25rem 0.5rem;
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23eab308' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Dropdown */
.dropdown-menu {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 0.5rem;
    box-shadow: var(--shadow-xl);
    background: var(--pearl-white);
}

.dropdown-item {
    font-size: 0.875rem;
    color: var(--color-gray-dark);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background-color: rgba(234, 179, 8, 0.1);
    color: var(--color-accent-dark);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    border: 2px solid transparent;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-dark);
    border-color: var(--color-accent);
}

.btn-primary:hover {
    background-color: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
    color: var(--pearl-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background-color: transparent;
    color: var(--pearl-white);
    border-color: var(--pearl-white);
}

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

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

.btn-outline-accent:hover {
    background-color: var(--color-accent);
    color: var(--color-dark);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

/* ========================================
   Section Styles
   ======================================== */
.section {
    padding: 5rem 0;
}

.section-sm {
    padding: 3rem 0;
}

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

.section-dark h2, 
.section-dark h3, 
.section-dark h4 {
    color: var(--pearl-white);
}

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

.section-header {
    text-align: center;
    width: 100%;
    margin: 0 auto 3.5rem;
}

.section-title {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.section-title span {
    color: var(--color-accent);
    font-size: 2.75rem;
    font-weight: 800;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-gray);
    margin-bottom: 0;
}

.section-header::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--color-accent);
    margin: 1.5rem auto 0;
    border-radius: 2px;
}

.section-more {
    display: inline-block;
    margin-top: 1rem;
    color: var(--color-accent);
    font-weight: 600;
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.section-more:hover {
    color: var(--color-accent-dark);
    transform: translateX(4px);
}

/* ========================================
   Page Header
   ======================================== */
.page-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    padding: 140px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, rgba(234, 179, 8, 0.15) 0%, transparent 50%);
}

.page-header h1 {
    color: var(--pearl-white);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 1;
}

.page-header p {
    color: var(--pearl-silver);
    font-size: 1.125rem;
    position: relative;
    z-index: 1;
}

.breadcrumb {
    background: transparent;
    padding: 1rem 0 0;
    margin-bottom: 0;
    justify-content: center;
}

.breadcrumb-item a {
    color: var(--pearl-silver);
    font-size: 0.875rem;
}

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

.breadcrumb-item.active {
    color: var(--color-accent);
    font-size: 0.875rem;
}

.breadcrumb-item + .breadcrumb-item::before {
    color: var(--pearl-silver);
}

/* ========================================
   Cards
   ======================================== */
.card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
    background: var(--pearl-white);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.card-body {
    padding: 1.5rem;
}

/* Product Card */
.product-card {
    background: var(--pearl-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
    border: 1px solid var(--color-border);
    height: 100%;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-accent);
}

.product-card-body {
    padding: 1.5rem;
}

.product-card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 0.25rem;
}

.product-card-subtitle {
    font-size: 0.875rem;
    color: var(--color-accent-dark);
    margin-bottom: 0.5rem;
}

.product-card-meta {
    font-size: 0.8125rem;
    color: var(--color-gray);
}

/* Product Card Image */
.product-card .product-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: linear-gradient(135deg, #f8fafc, #e2e8f0);
}

.product-card-featured .product-img {
    height: 180px;
}

.product-swatch-placeholder {
    width: 100%;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f8fafc, #e2e8f0);
    color: #94a3b8;
    font-size: 3rem;
}

.product-swatch-placeholder i {
    opacity: 0.5;
}

/* Product Card Details */
.product-code {
    font-size: 0.75rem;
    color: var(--color-gray);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.25rem;
}

.product-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 0.25rem;
}

.product-name-cn {
    font-size: 0.875rem;
    color: var(--color-accent-dark);
    margin-bottom: 0.5rem;
}

.product-size {
    font-size: 0.75rem;
    color: var(--color-gray);
    margin-bottom: 0.25rem;
}

.product-applications {
    font-size: 0.75rem;
    color: var(--color-gray);
    margin-bottom: 0;
}

.product-info-row {
    font-size: 0.75rem;
    color: var(--color-accent-dark);
}

/* Series Section */
.series-section {
    margin-bottom: 4rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--color-border);
}

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

.series-header {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--color-accent);
}

.series-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary);
}

.series-intro {
    padding: 1.5rem;
    background: var(--color-light-gray);
    border-radius: var(--radius-lg);
    margin-bottom: 2rem;
}

/* Product Detail Page */
.product-detail-image {
    background: var(--color-light-gray);
    border-radius: var(--radius-xl);
    overflow: hidden;
    padding: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
}

.product-detail-image img {
    max-height: 500px;
    width: auto;
}

.product-detail-placeholder {
    text-align: center;
    padding: 3rem;
}

.product-detail-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--color-accent);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
}

.product-detail-info h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.product-detail-table {
    width: 100%;
    margin-top: 1.5rem;
}

.product-detail-table td {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border);
}

.product-detail-table td:first-child {
    width: 140px;
    color: var(--color-gray);
}

.product-detail-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Series Card */
.series-card {
    position: relative;
    height: 300px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-normal);
    display: block;
}

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

.series-card-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    transition: transform var(--transition-slow);
}

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

.series-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(15, 23, 42, 0.95) 0%, rgba(15, 23, 42, 0.4) 60%, transparent 100%);
}

.series-card-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 2rem;
    color: var(--pearl-white);
}

.series-card-content h4 {
    color: var(--pearl-white);
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

/* Category Card */
.category-card {
    background: var(--pearl-white);
    border-radius: var(--radius-lg);
    padding: 2rem;
    border: 1px solid var(--color-border);
    transition: all var(--transition-normal);
    text-align: center;
    height: 100%;
}

.category-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.category-card-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    color: var(--color-dark);
    font-size: 1.5rem;
}

.category-card h4 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.category-card p {
    color: var(--color-gray);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

/* Advantage Card */
.advantage-card {
    background: var(--pearl-white);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    border: 1px solid var(--color-border);
    transition: all var(--transition-normal);
    height: 100%;
}

.advantage-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.advantage-icon {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 1.75rem;
    color: var(--color-dark);
    transition: transform var(--transition-normal);
}

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

.advantage-card h4 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
}

.advantage-card p {
    color: var(--color-gray);
    font-size: 0.875rem;
    margin-bottom: 0;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 70% 30%, rgba(234, 179, 8, 0.15) 0%, transparent 50%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 2rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--pearl-white);
    margin-bottom: 1.5rem;
    line-height: 1.1;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-accent);
    margin-bottom: 1rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.hero-tagline {
    font-size: 1.125rem;
    color: var(--pearl-silver);
    max-width: 100%;
    margin: 0 auto 2rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Hero Slider */
.hero-slider {
    position: relative;
    min-height: 100vh;
    overflow: hidden;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.hero-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(30, 41, 59, 0.85) 100%);
    z-index: 1;
}

.slide-bg-1 { background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><linearGradient id="g" x1="0%25" y1="0%25" x2="100%25" y2="100%25"><stop offset="0%25" style="stop-color:%23eab308;stop-opacity:0.3"/><stop offset="100%25" style="stop-color:%231e293b;stop-opacity:1"/></linearGradient></defs><rect fill="url(%23g)" width="100" height="100"/></svg>') center/cover; }
.slide-bg-2 { background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%); }
.slide-bg-3 { background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent-dark) 100%); }

.slide-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 2rem;
    max-width: 100%;
}

.slide-subtitle {
    font-size: 0.875rem;
    letter-spacing: 4px;
    color: var(--color-accent);
    margin-bottom: 1rem;
    text-transform: uppercase;
    font-weight: 600;
}

.slide-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--pearl-white);
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.slide-desc {
    font-size: 1.125rem;
    color: var(--pearl-silver);
    margin-bottom: 2rem;
}

.slider-nav {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    gap: 12px;
}

.slider-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
}

.slider-dot.active {
    background: var(--color-accent);
    transform: scale(1.3);
}

.slider-arrows {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    z-index: 10;
    display: flex;
    justify-content: space-between;
    padding: 0 2rem;
}

.slider-arrow {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--pearl-white);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.slider-arrow:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-dark);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
}

.scroll-indicator span {
    display: block;
    width: 24px;
    height: 40px;
    border: 2px solid var(--color-accent);
    border-radius: 12px;
    position: relative;
}

.scroll-indicator span::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    width: 4px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 2px;
    transform: translateX(-50%);
    animation: scrollDown 2s infinite;
}

@keyframes scrollDown {
    0% { top: 8px; opacity: 1; }
    100% { top: 24px; opacity: 0; }
}

/* Pearl Particles */
.pearl-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
    pointer-events: none;
}

.pearl-particle {
    position: absolute;
    width: 6px;
    height: 6px;
    background: radial-gradient(circle, rgba(234, 179, 8, 0.8) 0%, rgba(234, 179, 8, 0.2) 50%, transparent 70%);
    border-radius: 50%;
    animation: float 15s infinite linear;
    opacity: 0;
}

@keyframes float {
    0% { transform: translateY(100vh) rotate(0deg); opacity: 0; }
    10% { opacity: 0.6; }
    90% { opacity: 0.4; }
    100% { transform: translateY(-100vh) rotate(720deg); opacity: 0; }
}

/* ========================================
   Marquee
   ======================================== */
.marquee-section {
    background: var(--color-secondary);
    padding: 1rem 0;
    overflow: hidden;
}

.marquee-container {
    display: flex;
    overflow: hidden;
}

.marquee-content {
    display: flex;
    animation: marquee 30s linear infinite;
    white-space: nowrap;
}

.marquee-item {
    display: inline-flex;
    align-items: center;
    padding: 0 3rem;
    color: var(--pearl-silver);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 1px;
}

.marquee-item i { color: var(--color-accent); margin-right: 0.5rem; }

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ========================================
   Feature Item
   ======================================== */
.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: var(--color-light-gray);
    border-radius: var(--radius-md);
    margin-bottom: 0.875rem;
    transition: all var(--transition-fast);
}

.feature-item:last-child {
    margin-bottom: 0;
}

.feature-item:hover {
    background: rgba(234, 179, 8, 0.1);
    transform: translateX(4px);
}

.feature-check {
    width: 24px;
    height: 24px;
    min-width: 24px;
    background: var(--color-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-dark);
    font-size: 12px;
    font-weight: 900;
    line-height: 1;
}

.feature-check i,
.feature-check i::before {
    font-weight: 900 !important;
    display: inline-block;
    width: auto;
    height: auto;
}

i.fas:before {
    font-weight: 900;
}

/* Why Card */
.why-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    background: var(--pearl-white);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
    margin-bottom: 1rem;
}

.why-card:hover {
    border-color: var(--color-accent);
    background: rgba(234, 179, 8, 0.05);
}

.why-card-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    background: var(--color-accent);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-dark);
    font-size: 1.25rem;
}

/* ========================================
   Application Card (New Style for index.php)
   ======================================== */
.app-feature-card {
    background: var(--pearl-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    height: 100%;
    display: flex;
    flex-direction: column;
}

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

.app-feature-card-header {
    height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.app-feature-card-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: linear-gradient(to top, rgba(15, 23, 42, 0.3), transparent);
}

.app-feature-card-header i {
    font-size: 3rem;
    color: white;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    position: relative;
    z-index: 1;
}

.app-feature-card-body {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.app-feature-card-body h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
}

.app-feature-card-body p {
    color: var(--text-gray);
    font-size: 0.9rem;
    line-height: 1.6;
    flex: 1;
    margin-bottom: 1rem;
}

.app-feature-card-link {
    color: var(--color-accent);
    font-weight: 500;
    font-size: 0.9rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    transition: all var(--transition-fast);
}

.app-feature-card-link:hover {
    color: var(--color-primary);
}

.app-feature-card-link i {
    transition: transform var(--transition-fast);
}

.app-feature-card-link:hover i {
    transform: translateX(4px);
}

/* ========================================
   Application Expand - Hover Effect (Full Width)
   ======================================== */
.app-expand-section {
    padding-bottom: 0;
}

.app-expand-container {
    overflow: visible;
    padding: 0;
    margin-left: calc(-50vw + 50%);
    margin-right: calc(-50vw + 50%);
    max-width: 100vw;
    width: 100vw;
}

.app-expand-track {
    display: flex;
    width: 100%;
    flex-wrap: nowrap;
}

.app-expand-track.app-expand-8 .app-expand-item {
    width: 12.5%;
    flex-shrink: 0;
}

.app-expand-track.app-expand-10 .app-expand-item {
    width: 10%;
    flex-shrink: 0;
}

.app-expand-item {
    position: relative;
    height: 380px;
    overflow: hidden;
    display: block;
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    background: var(--pearl-white);
    box-shadow: var(--shadow-md);
}

.app-expand-item:hover,
.app-expand-item.active {
    box-shadow: var(--shadow-xl);
    z-index: 10;
}

/* Default expanded state - first item */
.app-expand-item.default-expanded {
    width: 25%;
}

/* Show hover content on default expanded item */
.app-expand-item.default-expanded .app-expand-hover {
    opacity: 1;
    transition: opacity 0.3s ease;
}

/* When track is hovered, default item shrinks */
.app-expand-track:hover .app-expand-item.default-expanded:not(:hover) {
    width: 12.5%;
}

.app-expand-track:hover .app-expand-item.default-expanded:not(:hover) .app-expand-hover {
    opacity: 0;
}

/* Sibling collapse on hover */
.app-expand-track:hover .app-expand-item:not(:hover):not(.default-expanded) {
    width: 8.33%;
}

/* Default expanded item hover state */
.app-expand-item.default-expanded:hover {
    width: 25%;
}

/* Other items transition */
.app-expand-item:not(.default-expanded) {
    width: 12.5%;
}

/* Hovered item expands */
.app-expand-track:hover .app-expand-item:hover {
    width: 25%;
    box-shadow: var(--shadow-xl);
    z-index: 10;
}

.app-expand-track:hover .app-expand-item:hover .app-expand-hover {
    opacity: 1;
}

.app-expand-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.app-expand-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.app-expand-item:hover .app-expand-img img,
.app-expand-item.active .app-expand-img img {
    transform: scale(1.1);
}

.app-expand-content {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 24px;
    background: linear-gradient(to top, rgba(15, 23, 42, 0.98) 0%, rgba(15, 23, 42, 0.8) 60%, transparent 100%);
    color: var(--pearl-white);
    z-index: 2;
    transition: padding 0.5s ease;
}

.app-expand-item:hover .app-expand-content,
.app-expand-item.active .app-expand-content {
    padding: 32px;
}

.app-expand-content h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--pearl-white);
    transition: font-size 0.5s ease;
}

.app-expand-item:hover .app-expand-content h3,
.app-expand-item.active .app-expand-content h3 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.app-expand-en {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
    transition: opacity 0.5s ease;
}

.app-expand-item:hover .app-expand-en,
.app-expand-item.active .app-expand-en {
    opacity: 0;
    height: 0;
    margin: 0;
    overflow: hidden;
}

.app-expand-plus {
    font-size: 1.5rem;
    color: var(--color-accent);
    font-weight: 300;
    transition: transform 0.5s ease;
}

.app-expand-item:hover .app-expand-plus,
.app-expand-item.active .app-expand-plus {
    transform: scale(0);
    opacity: 0;
}

.app-expand-hover {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: flex-end;
    padding: 24px;
    background: linear-gradient(to top, rgba(234, 179, 8, 0.95) 0%, rgba(234, 179, 8, 0.6) 50%, transparent 100%);
    z-index: 3;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.app-expand-item:hover .app-expand-hover,
.app-expand-item.active .app-expand-hover {
    opacity: 1;
}

.app-expand-hover-inner {
    width: 100%;
    text-align: center;
}

.app-expand-hover-inner span {
    display: inline-block;
    padding: 12px 24px;
    background: var(--color-dark);
    color: var(--pearl-white);
    font-weight: 600;
    font-size: 0.875rem;
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
}

.app-expand-hover-inner span:hover {
    background: var(--color-primary);
    transform: translateY(-2px);
}

/* Section More Link */
.section-more {
    display: inline-block;
    margin-top: 0.75rem;
    color: var(--color-accent);
    font-weight: 500;
    text-decoration: none;
    transition: color 0.3s ease;
}

.section-more:hover {
    color: var(--color-primary);
}

/* ========================================
   Industry Card
   ======================================== */
.industry-card {
    position: relative;
    height: 260px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
    display: block;
}

.industry-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.industry-card-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    transition: transform var(--transition-slow);
}

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

.industry-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(15, 23, 42, 0.95) 0%, rgba(15, 23, 42, 0.4) 60%, transparent 100%);
}

.industry-card-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1.5rem;
    color: var(--pearl-white);
}

.industry-card-icon {
    width: 48px;
    height: 48px;
    background: var(--color-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.75rem;
    transform: scale(0);
    transition: transform var(--transition-normal);
}

.industry-card:hover .industry-card-icon { transform: scale(1); }
.industry-card-icon i { color: var(--color-dark); font-size: 1.25rem; }

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--color-dark);
    color: var(--pearl-silver);
    padding: 4rem 0 2rem;
}

.footer-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--pearl-white);
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.75rem;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--color-accent);
    border-radius: 2px;
}

.footer-links a {
    display: block;
    padding: 0.375rem 0;
    color: var(--pearl-silver);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-accent);
    padding-left: 4px;
}

.footer-contact p {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    font-size: 0.875rem;
}

.footer-contact i {
    color: var(--color-accent);
    width: 20px;
    text-align: center;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    margin-top: 3rem;
    text-align: center;
    font-size: 0.875rem;
}

.footer-social {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--pearl-white);
    transition: all var(--transition-fast);
}

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

/* ========================================
   Forms
   ======================================== */
.form-control {
    font-family: var(--font-body);
    padding: 0.875rem 1rem;
    border: 1px solid var(--color-border);
    background: var(--pearl-white);
    color: var(--color-gray-dark);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-control:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(234, 179, 8, 0.15);
    outline: none;
}

.form-control::placeholder {
    color: var(--color-gray);
}

.form-label {
    font-weight: 500;
    color: var(--color-gray-dark);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
    background: linear-gradient(135deg, var(--color-accent-dark), var(--color-accent));
    padding: 4rem 0;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.2) 0%, transparent 50%);
    animation: rotateBg 15s linear infinite;
}

@keyframes rotateBg {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.cta-section h2 {
    color: var(--color-dark);
}

/* ========================================
   Quick Contact & Back to Top
   ======================================== */
.quick-contact {
    position: fixed;
    right: 30px;
    bottom: 50%;
    z-index: 1020;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.quick-contact-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
    text-decoration: none;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-lg);
    flex-shrink: 0;
}

.quick-contact-btn:hover {
    transform: scale(1.1);
    color: white;
}

.quick-whatsapp { background: #25D366; }
.quick-email { background: var(--color-accent); color: var(--color-dark) !important; }

#backToTop {
    position: fixed;
    bottom: 136px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-primary);
    border: none;
    color: var(--pearl-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    z-index: 1020;
    box-shadow: var(--shadow-md);
}

#backToTop.show { opacity: 1; visibility: visible; }
#backToTop:hover { transform: translateY(-3px); }

/* ========================================
   Series Header
   ======================================== */
.series-header {
    background: linear-gradient(135deg, rgba(234, 179, 8, 0.1), rgba(234, 179, 8, 0.05));
    border-left: 4px solid var(--color-accent);
    padding: 1.5rem;
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
    margin: 2rem 0;
}

.series-header h3 {
    margin-bottom: 0.25rem;
}

/* Product Swatch */
.product-swatch {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    flex-shrink: 0;
    box-shadow: inset -2px -2px 8px rgba(0, 0, 0, 0.2), inset 2px 2px 8px rgba(255, 255, 255, 0.3);
}

.chameleon-swatch {
    background: conic-gradient(from 0deg, #eab308, #f97316, #a855f7, #3b82f6, #eab308);
}

/* About Intro */
.about-intro {
    background: linear-gradient(135deg, rgba(234, 179, 8, 0.08), rgba(234, 179, 8, 0.03));
    border-left: 4px solid var(--color-accent);
    padding: 2.5rem;
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
    height: 100%;
}

/* Contact Card */
.contact-card {
    background: var(--pearl-white);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    border: 1px solid var(--color-border);
    text-align: center;
    transition: all var(--transition-fast);
}

.contact-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
}

.contact-card i {
    font-size: 2rem;
    color: var(--color-accent);
    margin-bottom: 0.75rem;
}

/* Benefit Card */
.benefit-card {
    background: var(--pearl-white);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}

.benefit-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
}

.benefit-card i {
    font-size: 2rem;
    color: var(--color-accent);
    margin-bottom: 1rem;
}

/* App Card */
.app-card {
    position: relative;
    height: 300px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-normal);
    display: block;
}

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

.app-card-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    transition: transform var(--transition-slow);
}

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

.app-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(15, 23, 42, 0.95) 0%, rgba(15, 23, 42, 0.4) 60%, transparent 100%);
}

.app-card-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 2rem;
    color: var(--pearl-white);
}

.app-card-icon {
    width: 56px;
    height: 56px;
    background: var(--color-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    transform: scale(0);
    transition: transform var(--transition-normal);
}

.app-card:hover .app-card-icon { transform: scale(1); }
.app-card-icon i { font-size: 1.5rem; color: var(--color-dark); }

/* Sample Hero */
.sample-hero {
    background: linear-gradient(135deg, var(--color-accent-dark), var(--color-accent));
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.sample-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.2) 0%, transparent 50%);
    animation: rotateBg 20s linear infinite;
}

/* Why Card */
.why-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    background: var(--pearl-white);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
    margin-bottom: 1rem;
}

.why-card:hover {
    border-color: var(--color-accent);
    background: rgba(234, 179, 8, 0.05);
}

.why-card-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    background: var(--color-accent);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-dark);
    font-size: 1.25rem;
}

/* Why Choose Wrapper */
.why-choose-wrapper {
    width: 100%;
}

/* Stats Feature Card */
.stats-feature-card {
    position: relative;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent-dark) 100%);
    border-radius: var(--radius-xl);
    overflow: hidden;
    padding: 2.5rem;
    min-height: 380px;
    box-shadow: 0 20px 60px rgba(10, 37, 64, 0.3);
}

.stats-feature-bg {
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.stats-feature-content {
    position: relative;
    z-index: 1;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.stats-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 2rem;
}

.stats-header i {
    font-size: 1.25rem;
    color: var(--color-accent);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    flex: 1;
}

.stat-item-new {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    text-align: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    transition: all var(--transition-normal);
}

.stat-item-new:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-4px);
}

.stat-icon {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.25rem;
    color: var(--color-accent);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-item-new .stat-label {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.8125rem;
}

.stats-footer {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.stats-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.15);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.stats-badge i {
    color: var(--color-accent);
}

/* Responsive for Stats Feature Card */
@media (max-width: 991.98px) {
    .stats-feature-card {
        min-height: auto;
        padding: 2rem;
    }
    .stats-grid {
        gap: 1rem;
    }
    .stat-value {
        font-size: 2rem;
    }
}

@media (max-width: 575.98px) {
    .stats-footer {
        flex-direction: column;
    }
    .stats-badge {
        justify-content: center;
    }
}

/* Product Types Showcase */
.product-types-showcase {
    background: linear-gradient(145deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: var(--radius-xl);
    padding: 2rem;
    position: relative;
    overflow: hidden;
}

.product-types-showcase::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(234, 179, 8, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.showcase-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--color-primary);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid rgba(234, 179, 8, 0.2);
}

.showcase-header i {
    color: var(--color-accent);
    font-size: 1.25rem;
}

.product-cards-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
}

.product-type-card {
    position: relative;
    background: white;
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    text-align: center;
    overflow: hidden;
    transition: all var(--transition-normal);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.product-type-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(10, 37, 64, 0.15);
}

.card-glitter {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent 40%, rgba(255, 255, 255, 0.8) 50%, transparent 60%);
    opacity: 0;
    transition: opacity var(--transition-normal);
    pointer-events: none;
}

.product-type-card:hover .card-glitter {
    opacity: 1;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%) rotate(45deg); }
    100% { transform: translateX(100%) rotate(45deg); }
}

.card-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.5rem;
    position: relative;
    z-index: 1;
}

.card-natural .card-icon {
    background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
    color: #2e7d32;
}

.card-synthetic .card-icon {
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    color: #1565c0;
}

.card-glass .card-icon {
    background: linear-gradient(135deg, #fff3e0 0%, #ffe0b2 100%);
    color: #e65100;
}

.card-series .card-icon {
    background: linear-gradient(135deg, #fce4ec 0%, #f8bbd9 100%);
    color: #c2185b;
}

.product-type-card h5 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
    position: relative;
    z-index: 1;
}

.product-type-card p {
    color: var(--color-gray);
    font-size: 0.8125rem;
    margin-bottom: 0.75rem;
    position: relative;
    z-index: 1;
}

.card-tags {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.tag {
    background: var(--color-light);
    color: var(--color-primary);
    font-size: 0.6875rem;
    font-weight: 600;
    padding: 0.25rem 0.625rem;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Responsive for Product Showcase */
@media (max-width: 991.98px) {
    .product-types-showcase {
        padding: 1.5rem;
    }
    .product-cards-grid {
        gap: 1rem;
    }
    .product-type-card {
        padding: 1.25rem;
    }
    .card-icon {
        width: 48px;
        height: 48px;
        font-size: 1.25rem;
    }
}

@media (max-width: 575.98px) {
    .product-cards-grid {
        grid-template-columns: 1fr;
    }
}

/* Stat Item (Legacy - keep for compatibility) */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.stat-item {
    text-align: center;
    padding: 2.5rem 1.5rem;
    background: var(--color-light-gray);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    min-height: 160px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.stat-item:hover {
    background: rgba(234, 179, 8, 0.1);
    transform: translateY(-2px);
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--color-gray);
    font-size: 0.875rem;
}

/* ========================================
   Utility Classes
   ======================================== */
.gap-1 { gap: 0.25rem !important; }
.gap-2 { gap: 0.5rem !important; }
.gap-3 { gap: 1rem !important; }
.gap-4 { gap: 1.5rem !important; }
.gap-5 { gap: 3rem !important; }

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 991.98px) {
    .container {
        padding-left: 20px;
        padding-right: 20px;
    }
    .section-gray.app-expand-section {
        padding: 2rem 0 0 0;
    }
    .app-expand-container {
        margin-left: 0;
        margin-right: 0;
        max-width: 100%;
        width: 100%;
        padding: 0;
    }
    .app-expand-track {
        flex-wrap: wrap;
    }
    .app-expand-track.app-expand-8 .app-expand-item,
    .app-expand-track.app-expand-10 .app-expand-item {
        width: 20%;
    }
    .app-expand-track:hover .app-expand-item:hover {
        width: 40%;
    }
}

@media (max-width: 767.98px) {
    .container {
        padding-left: 16px;
        padding-right: 16px;
    }
    .hero-title { font-size: 2rem; letter-spacing: -0.5px; }
    .slide-title { font-size: 1.5rem; }
    .section { padding: 3rem 0; }
    .section-header { margin-bottom: 2.5rem; }
    .section-gray.app-expand-section {
        padding: 2rem 0 0 0;
    }
    .section-title { font-size: 1.5rem; }
    .section-title span { font-size: 2rem; }
    .page-header h1 { font-size: 1.75rem; }
    .quick-contact { right: 20px; bottom: 100px; }
    #backToTop { right: 20px; bottom: 136px; }
    .advantage-card { padding: 1.5rem; }
    .advantage-icon { width: 60px; height: 60px; font-size: 1.5rem; }
    .series-card { height: 250px; }
    .series-card-content { padding: 1.5rem; }
    .app-expand-container {
        margin-left: 0;
        margin-right: 0;
        max-width: 100%;
        width: 100%;
        padding: 0;
    }
    .app-expand-track {
        flex-wrap: wrap;
    }
    .app-expand-track.app-expand-8 .app-expand-item,
    .app-expand-track.app-expand-10 .app-expand-item {
        width: 20%;
    }
    .app-expand-track:hover .app-expand-item:hover {
        width: 40%;
    }
}

/* App Detail Card - Reference Style */
.app-intro-wrapper {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding-bottom: 2rem;
}

.app-intro-wrapper h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.app-intro-wrapper p {
    font-size: 1.125rem;
    line-height: 1.8;
}

.app-detail-card {
    display: flex;
    align-items: center;
    gap: 3rem;
    padding: 3rem 0;
    border-bottom: 1px solid var(--color-border);
}

.app-detail-card:last-child {
    border-bottom: none;
}

.app-detail-card.reverse {
    flex-direction: row-reverse;
}

.app-detail-img {
    flex: 0 0 45%;
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.app-detail-img img {
    width: 100%;
    height: 320px;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.app-detail-card:hover .app-detail-img img {
    transform: scale(1.05);
}

.app-detail-content {
    flex: 1;
    padding: 1rem 0;
}

.app-detail-tag {
    display: inline-block;
    background: rgba(234, 179, 8, 0.15);
    color: var(--color-accent-dark);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 0.375rem 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
}

.app-detail-content h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.app-detail-content > p {
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.app-detail-features {
    list-style: none;
    padding: 0;
    margin: 0 0 1.5rem 0;
}

.app-detail-features li {
    padding: 0.5rem 0;
    font-size: 0.9375rem;
    color: var(--color-gray-dark);
}

.app-detail-content .btn {
    margin-top: 0.5rem;
}

@media (max-width: 575.98px) {
    .container {
        padding-left: 12px;
        padding-right: 12px;
    }
    .hero-cta { flex-direction: column; align-items: center; }
    .hero-cta .btn { width: 100%; max-width: 280px; }
    .section-header { margin-bottom: 2rem; }
    .about-intro { padding: 1.5rem; }
    .app-feature-card-body p { font-size: 0.85rem; }
    .section-gray.app-expand-section {
        padding: 2rem 0 0 0;
    }
    .app-expand-container {
        margin-left: 0;
        margin-right: 0;
        max-width: 100%;
        width: 100%;
        padding: 0;
    }
    .stats-feature-card {
        padding: 1.5rem;
    }
    .stats-grid {
        gap: 1rem;
    }
    .stat-value {
        font-size: 2rem;
    }
    .stat-icon {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    .app-expand-track {
        flex-wrap: wrap;
    }
    .app-expand-track.app-expand-8 .app-expand-item,
    .app-expand-track.app-expand-10 .app-expand-item {
        width: 50%;
    }
    .app-expand-track:hover .app-expand-item:hover {
        width: 50%;
    }
    .app-expand-content h3 {
        font-size: 0.9rem;
    }
    .app-expand-en {
        display: none;
    }

    /* App Detail Card Responsive */
    .app-detail-card,
    .app-detail-card.reverse {
        flex-direction: column;
        gap: 1.5rem;
        padding: 2rem 0;
    }
    .app-detail-img {
        flex: none;
        width: 100%;
    }
    .app-detail-img img {
        height: 220px;
    }
    .app-detail-content h3 {
        font-size: 1.5rem;
    }
}

/* ========================================
   Products Page Styles
   ======================================== */
.products-intro {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding-bottom: 2rem;
}

.products-intro h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.products-intro p {
    font-size: 1.125rem;
    line-height: 1.8;
}

.product-base-card {
    background: var(--pearl-white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
}

.product-base-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.product-base-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 2.5rem 3rem;
    color: var(--color-primary);
}

.product-base-header h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin: 0;
    color: var(--color-primary);
}

.product-base-icon {
    width: 72px;
    height: 72px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--color-accent-dark);
    flex-shrink: 0;
}

.product-base-tag {
    display: inline-block;
    background: rgba(234, 179, 8, 0.2);
    color: var(--color-accent-dark);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
}

.product-base-body {
    padding: 2.5rem 3rem;
    background: var(--pearl-white);
}

.product-swatches {
    display: flex;
    gap: 1rem;
    margin: 1.5rem 0;
}

.product-swatch {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    flex-shrink: 0;
    box-shadow: inset -2px -2px 8px rgba(0, 0, 0, 0.15), inset 2px 2px 8px rgba(255, 255, 255, 0.4);
    transition: transform var(--transition-fast);
}

.product-swatch:hover {
    transform: scale(1.15);
}

.product-base-features {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem 2rem;
    margin-top: 1.5rem;
}

.product-feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
    color: var(--color-gray-dark);
}

.product-category-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.product-category-item {
    background: var(--pearl-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    transition: all var(--transition-normal);
}

.product-category-item:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.product-category-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.25rem;
    color: var(--color-dark);
}

.product-category-item h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.product-category-item p {
    font-size: 0.875rem;
    color: var(--color-gray);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.product-category-item a {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-accent-dark);
    transition: color var(--transition-fast);
}

.product-category-item a:hover {
    color: var(--color-accent);
}

/* Responsive for Products Page */
@media (max-width: 991.98px) {
    .product-base-header {
        padding: 2rem;
        flex-direction: column;
        text-align: center;
    }
    .product-base-body {
        padding: 2rem;
    }
    .product-category-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 575.98px) {
    .products-intro h2 {
        font-size: 1.5rem;
    }
    .product-swatches {
        flex-wrap: wrap;
        justify-content: center;
    }
    .product-base-features {
        flex-direction: column;
        gap: 0.75rem;
    }
    .product-category-grid {
        grid-template-columns: 1fr;
    }
    .product-category-item {
        padding: 1.5rem;
    }
}

/* ========================================
   Animations
   ======================================== */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fadeInUp {
    animation: fadeInUp 0.6s ease forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

.bg-accent { background-color: var(--color-accent) !important; }
.bg-accent.text-dark { color: var(--color-dark) !important; }

/* ========================================
   Print Styles
   ======================================== */
@media print {
    .navbar, .footer, .btn, .hero-cta, .quick-contact, #backToTop { display: none !important; }
    .hero { min-height: auto; padding: 2rem 0; }
    .section { padding: 1rem 0; }
}