/* ====================================
   LingBot-World Website Styles
   Modern, Dark Theme, Professional
   ==================================== */

/* CSS Custom Properties */
:root {
    /* ========================================
       2026 Design System - First Principles
       纯黑底 + 翡翠绿点睛 + 极简主义
       ======================================== */

    /* Backgrounds - Pure Black Foundation */
    --color-bg: #000000;
    --color-bg-secondary: #050505;
    --color-bg-tertiary: #0a0a0a;
    --color-surface: #0f0f0f;
    --color-surface-hover: #141414;

    /* Borders - Subtle Definition */
    --color-border: rgba(255, 255, 255, 0.06);
    --color-border-light: rgba(255, 255, 255, 0.1);
    --color-border-glow: rgba(255, 255, 255, 0.15);

    /* Typography - High Contrast */
    --color-text: #ffffff;
    --color-text-secondary: #999999;
    --color-text-muted: #555555;

    /* Primary - Emerald (AI, Growth, Innovation) */
    --color-primary: #10b981;
    --color-primary-dark: #059669;
    --color-primary-light: #34d399;
    --color-primary-glow: rgba(16, 185, 129, 0.2);
    --color-primary-intense: rgba(16, 185, 129, 0.35);

    /* Accent - Pure White for emphasis */
    --color-accent: #ffffff;
    --color-accent-light: #f5f5f5;
    --color-accent-glow: rgba(255, 255, 255, 0.15);

    /* Secondary - Subtle Cyan */
    --color-secondary: #06b6d4;
    --color-secondary-glow: rgba(6, 182, 212, 0.15);

    /* Status Colors */
    --color-success: #10b981;
    --color-success-glow: rgba(16, 185, 129, 0.2);
    --color-warning: #f59e0b;
    --color-error: #ef4444;

    /* Gradients - Subtle & Elegant */
    --gradient-primary: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
    --gradient-accent: linear-gradient(135deg, #10b981 0%, #34d399 100%);
    --gradient-glow: linear-gradient(135deg, rgba(16, 185, 129, 0.08) 0%, transparent 100%);
    --gradient-hero: radial-gradient(ellipse at 50% 0%, rgba(16, 185, 129, 0.06) 0%, transparent 50%);
    --gradient-hero-secondary: radial-gradient(ellipse at 80% 50%, rgba(6, 182, 212, 0.04) 0%, transparent 50%);
    --gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0.02) 0%, transparent 100%);
    --gradient-shine: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.02) 50%, transparent 70%);

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px var(--color-primary-glow);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;

    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;
}

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

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

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul, ol {
    list-style: none;
}

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

/* ====================================
   Navigation - 2026 Minimal
   ==================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-md) 0;
    background: transparent;
    backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(0, 0, 0, 0.85);
    border-bottom-color: var(--color-border);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    transition: color var(--transition-fast);
}

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

.logo-icon {
    color: var(--color-primary);
    font-size: 1.25rem;
}

.logo-img {
    display: inline-block;
    vertical-align: middle;
    margin-right: var(--space-xs);
    border-radius: var(--radius-sm);
}

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

.nav-menu a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
}

.nav-menu a:hover {
    color: var(--color-text);
    background: rgba(255, 255, 255, 0.05);
}

.nav-btn {
    padding: var(--space-sm) var(--space-lg) !important;
    background: transparent;
    border-radius: var(--radius-full);
    color: var(--color-text) !important;
    border: 1px solid var(--color-border-light);
    font-weight: 500;
}

.nav-btn:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--color-text-secondary);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-sm);
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: all var(--transition-fast);
}

/* ====================================
   Hero Section - 2026 Pure Minimal
   ==================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4xl) 0;
    overflow: hidden;
    background: var(--color-bg);
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(16, 185, 129, 0.03) 0%, transparent 50%);
}

.hero-gradient::before {
    display: none;
}

/* Single Subtle Glow */
.hero-bg::before {
    content: '';
    position: absolute;
    width: 800px;
    height: 400px;
    background: radial-gradient(ellipse, rgba(16, 185, 129, 0.08) 0%, transparent 70%);
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    filter: blur(60px);
}

.hero-bg::after {
    display: none;
}

/* Hide grid for pure black */
.hero-grid {
    display: none;
}

/* Subtle particles */
.hero-particles {
    display: none;
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) var(--space-md);
    background: transparent;
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: var(--space-xl);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: var(--color-primary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero-title {
    font-size: clamp(3rem, 10vw, 6rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
}

.title-line {
    display: block;
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto var(--space-2xl);
    line-height: 1.7;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
    flex-wrap: wrap;
}

.stat {
    text-align: center;
    padding: var(--space-md) var(--space-lg);
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    min-width: 100px;
}

.stat:hover {
    border-color: var(--color-primary);
}

.stat-value {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text);
    font-family: var(--font-mono);
    line-height: 1.2;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: var(--space-xs);
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
    margin-bottom: var(--space-3xl);
}

.hero-scroll {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.scroll-indicator {
    width: 24px;
    height: 40px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-full);
    position: relative;
}

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

@keyframes scroll {
    0%, 100% { top: 8px; opacity: 1; }
    50% { top: 20px; opacity: 0.3; }
}

/* ====================================
   Buttons - Clean & Minimal
   ==================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
    border: none;
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--color-primary-glow);
}

.btn-primary:active {
    transform: translateY(0);
}

/* Remove pulse animation for cleaner look */
.btn-primary.btn-pulse {
    animation: none;
}

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

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--color-text-secondary);
    transform: translateY(-2px);
}

/* Accent Button Variant */
.btn-accent {
    background: var(--color-accent);
    color: var(--color-bg);
    border: none;
}

.btn-accent:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 40px var(--color-accent-glow);
}

.btn-disabled {
    background: var(--color-surface);
    color: var(--color-text-muted);
    cursor: not-allowed;
    opacity: 0.5;
}

/* Outline Button - Clean & Minimal */
.btn-outline {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border-light);
    backdrop-filter: blur(10px);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--color-text-secondary);
    transform: translateY(-2px);
}

/* Light Button - White background with border */
.btn-light {
    background: rgba(255, 255, 255, 0.95);
    color: var(--color-bg);
    border: 1px solid rgba(255, 255, 255, 0.8);
}

.btn-light:hover {
    background: white;
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.2);
}

/* Ghost Button - Subtle with no background */
.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
    border: none;
    padding: var(--space-sm) var(--space-md);
}

.btn-ghost:hover {
    color: var(--color-text);
    background: rgba(255, 255, 255, 0.05);
}

.btn-large {
    padding: var(--space-lg) var(--space-2xl);
    font-size: 1.05rem;
    border-radius: var(--radius-xl);
}

.btn-small {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.85rem;
    border-radius: var(--radius-md);
}

/* ====================================
   Sections
   ==================================== */
.section {
    padding: var(--space-4xl) 0;
}

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

.section-tag {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: transparent;
    color: var(--color-primary);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-md);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.section-desc {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ====================================
   About Section - Minimal 2026 Design
   ==================================== */

/* Specs Grid - Clean horizontal layout */
.specs-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-sm);
    margin-bottom: var(--space-2xl);
}

.spec-item {
    text-align: center;
    padding: var(--space-lg) var(--space-sm);
}

.spec-number {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-primary);
    font-family: var(--font-mono);
    margin-bottom: var(--space-2xs);
}

.spec-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Video Demo */
.about-video {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    margin-bottom: var(--space-2xl);
}

.about-video video {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    display: block;
}

/* Key Highlight */
.about-highlight {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-highlight p {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
}

/* About Section Responsive */
@media (max-width: 1024px) {
    .specs-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .specs-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .spec-number {
        font-size: 1.5rem;
    }

    .about-highlight {
        text-align: left;
    }
}

@media (max-width: 480px) {
    .specs-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.visual-header {
    display: flex;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.visual-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.visual-dot.red { background: #ef4444; }
.visual-dot.yellow { background: #f59e0b; }
.visual-dot.green { background: #10b981; }

.visual-content {
    padding: var(--space-xl);
}

.code-block {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 2;
}

.code-comment { color: var(--color-text-muted); }
.code-keyword { color: var(--color-primary-light); }
.code-string { color: var(--color-success); }
.code-operator { color: var(--color-accent); }

/* ====================================
   Features Section - 2026 Minimal
   ==================================== */
.features {
    background: var(--color-bg);
}

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

.feature-card {
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all var(--transition-base);
}

.feature-card:hover {
    border-color: var(--color-primary);
    background: rgba(16, 185, 129, 0.03);
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
    color: var(--color-primary);
    transition: all var(--transition-base);
}

.feature-card:hover .feature-icon {
    border-color: var(--color-primary);
    color: var(--color-primary-light);
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.feature-desc {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin-bottom: var(--space-lg);
}

.feature-list {
    margin-bottom: var(--space-lg);
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    padding: var(--space-sm) 0;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.feature-list .check {
    color: var(--color-success);
    font-weight: bold;
}

.feature-highlight {
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    font-size: 0.85rem;
}

.highlight-label {
    color: var(--color-primary-light);
    font-weight: 600;
}

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

/* ====================================
   Models Section - Premium Cards
   ==================================== */
.models-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.model-card {
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all var(--transition-base);
}

.model-card:hover {
    border-color: var(--color-border-light);
}

.model-card.available {
    border-color: rgba(16, 185, 129, 0.4);
}

.model-card.available:hover {
    border-color: var(--color-primary);
    background: rgba(16, 185, 129, 0.03);
}

.model-card.featured {
    border-color: rgba(16, 185, 129, 0.3);
}

.model-status {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.status-badge {
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.status-badge.available {
    background: rgba(16, 185, 129, 0.2);
    color: var(--color-success);
}

.status-badge.coming {
    background: rgba(245, 158, 11, 0.2);
    color: var(--color-warning);
}

.status-badge.featured {
    background: rgba(16, 185, 129, 0.2);
    color: var(--color-primary-light);
}

.model-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

.model-variant {
    display: block;
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-bottom: var(--space-lg);
}

.model-desc {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin-bottom: var(--space-lg);
}

.model-specs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    padding: var(--space-md);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
}

.spec {
    text-align: center;
}

.spec-label {
    display: block;
    font-size: 0.7rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-xs);
}

.spec-value {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text);
}

.model-features {
    margin-bottom: var(--space-xl);
}

.model-features li {
    padding: var(--space-sm) 0;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    border-bottom: 1px solid var(--color-border);
}

.model-features li:last-child {
    border-bottom: none;
}

.model-btn {
    width: 100%;
}

/* ====================================
   Demos Section
   ==================================== */
.demos {
    background: var(--color-bg-secondary);
}

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

.demo-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
}

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

.demo-card.large {
    grid-column: span 3;
    display: grid;
    grid-template-columns: 2fr 1fr;
}

.demo-preview {
    position: relative;
    aspect-ratio: 16/9;
    background: var(--color-bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.demo-card.large .demo-preview {
    aspect-ratio: auto;
    min-height: 300px;
}

.demo-placeholder {
    color: var(--color-text-muted);
    opacity: 0.5;
    transition: all var(--transition-base);
}

.demo-card:hover .demo-placeholder {
    opacity: 1;
    color: var(--color-primary);
}

.demo-duration {
    position: absolute;
    bottom: var(--space-md);
    right: var(--space-md);
    padding: var(--space-xs) var(--space-sm);
    background: rgba(0, 0, 0, 0.8);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-family: var(--font-mono);
}

.demo-info {
    padding: var(--space-lg);
}

.demo-card.large .demo-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--space-2xl);
}

.demo-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.demo-card.large .demo-title {
    font-size: 1.25rem;
}

.demo-desc {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

.demo-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.tag {
    padding: var(--space-xs) var(--space-sm);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.demos-cta {
    text-align: center;
    margin-top: var(--space-2xl);
}

/* ====================================
   Technical Section
   ==================================== */
.technical-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
    margin-bottom: var(--space-3xl);
}

.tech-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
}

.tech-title {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: 1.1rem;
    margin-bottom: var(--space-lg);
    color: var(--color-primary-light);
}

.tech-list li {
    padding: var(--space-sm) 0;
    font-size: 0.95rem;
    color: var(--color-text-secondary);
}

.tech-list strong {
    color: var(--color-text);
}

/* Comparison Table */
.comparison-section {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
}

.comparison-title {
    font-size: 1.25rem;
    margin-bottom: var(--space-xl);
    text-align: center;
}

.comparison-table-wrapper {
    overflow-x: auto;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
}

.comparison-table th,
.comparison-table td {
    padding: var(--space-md) var(--space-lg);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.comparison-table th {
    font-weight: 600;
    color: var(--color-text-muted);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.comparison-table th.highlight {
    color: var(--color-primary-light);
}

.comparison-table td.highlight {
    background: rgba(16, 185, 129, 0.05);
}

.comparison-table .yes {
    color: var(--color-success);
}

.comparison-table .no {
    color: var(--color-text-muted);
}

/* ====================================
   Getting Started Section
   ==================================== */
.getting-started {
    background: var(--color-bg-secondary);
}

.start-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
}

.start-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
}

.start-number {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.start-card h4 {
    font-size: 1rem;
    margin-bottom: var(--space-md);
}

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

.code-snippet {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin-top: var(--space-sm);
}

.code-snippet code {
    flex: 1;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-accent);
    overflow-x: auto;
}

.copy-btn {
    padding: var(--space-sm);
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.copy-btn:hover {
    color: var(--color-text);
}

.start-links {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

/* ====================================
   CTA Section
   ==================================== */
.cta {
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
    text-align: center;
    padding: var(--space-4xl) 0;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: var(--space-lg);
}

.cta-desc {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2xl);
}

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

/* ====================================
   Footer - 2026 Pure Minimal
   ==================================== */
.footer {
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    padding: var(--space-2xl) 0 var(--space-xl);
}

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

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

.footer-brand p {
    color: var(--color-text-muted);
    font-size: 0.85rem;
    max-width: 280px;
    line-height: 1.6;
}

.footer-links h5 {
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-links ul li {
    margin-bottom: var(--space-sm);
}

.footer-links a {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    transition: all var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-text);
}

.footer-bottom {
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.footer-note {
    margin-top: var(--space-sm);
    font-size: 0.75rem;
    opacity: 0.6;
}

/* Footer Legal Links */
.footer-legal {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    align-items: center;
    padding: var(--space-md) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    margin-top: var(--space-lg);
    margin-bottom: var(--space-md);
}

.footer-legal a {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

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

.legal-divider {
    color: rgba(255, 255, 255, 0.1);
    font-size: 0.7rem;
}

.footer-disclaimer {
    margin-top: var(--space-md);
    font-size: 0.7rem;
    color: var(--color-text-muted);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
    opacity: 0.6;
}

.footer-disclaimer strong {
    color: var(--color-text-secondary);
    font-weight: 500;
}

.footer-disclaimer a {
    color: var(--color-text-secondary);
    text-decoration: underline;
    text-underline-offset: 2px;
}

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

/* ====================================
   Legal Sections
   ==================================== */
.legal-section {
    background: var(--color-bg-secondary);
    padding: var(--space-4xl) 0;
    border-top: 1px solid var(--color-border);
}

.legal-section + .legal-section {
    margin-top: var(--space-xl);
}

.legal-section .section-title {
    font-size: 2rem;
    margin-bottom: var(--space-2xl);
    text-align: center;
}

.legal-content {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-2xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    text-align: center;
}

.legal-content .legal-updated {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
    font-style: italic;
}

.legal-content h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--color-text);
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-md);
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    text-align: left;
}

.legal-content h3:first-of-type {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
}

.legal-content p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: var(--space-lg);
    text-align: left;
}

.legal-content ul {
    margin-left: var(--space-xl);
    margin-bottom: var(--space-lg);
    padding: var(--space-md) 0;
    text-align: left;
}

.legal-content ul li {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: var(--space-md);
    list-style-type: disc;
}

.legal-content ul li:last-child {
    margin-bottom: 0;
}

.legal-content ul li strong {
    color: var(--color-text);
    font-weight: 500;
}

.legal-content a {
    color: var(--color-primary);
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color var(--transition-fast);
}

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

/* ====================================
   Responsive Design
   ==================================== */
@media (max-width: 1024px) {
    .features-grid,
    .models-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .demo-card.large {
        grid-column: span 2;
        grid-template-columns: 1fr;
    }

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

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

@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        padding: var(--space-lg);
        background: var(--color-bg-secondary);
        border-bottom: 1px solid var(--color-border);
        gap: var(--space-md);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

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

    .features-grid,
    .models-grid,
    .technical-grid {
        grid-template-columns: 1fr;
    }

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

    .demo-card.large {
        grid-column: span 1;
    }

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .legal-section {
        padding: var(--space-2xl) 0;
    }

    .legal-section .section-title {
        font-size: 1.5rem;
    }

    .legal-content {
        padding: var(--space-lg);
    }

    .legal-content h3 {
        font-size: 1rem;
        margin-top: var(--space-xl);
        padding-top: var(--space-md);
    }

    .legal-content p,
    .legal-content ul li {
        font-size: 0.9rem;
        line-height: 1.7;
    }

    .legal-content ul {
        margin-left: var(--space-lg);
    }

    .hero-stats {
        gap: var(--space-lg);
    }

    .stat-value {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

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

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .start-links {
        flex-direction: column;
        align-items: center;
    }

    .model-specs {
        grid-template-columns: 1fr;
    }
}

/* ====================================
   Gaming Applications Section - 2026 Minimal
   ==================================== */
.gaming {
    background: var(--color-bg);
}

/* Zero Code Banner */
.zero-code-banner {
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    margin-bottom: var(--space-3xl);
}

.banner-content {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.banner-icon {
    flex-shrink: 0;
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-primary);
}

.banner-text h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.banner-text p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Gaming Grid */
.gaming-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-3xl);
}

.gaming-card {
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all var(--transition-base);
}

.gaming-card:hover {
    border-color: var(--color-primary);
}

.gaming-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-md);
    color: var(--color-primary);
}

.gaming-card h4 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.gaming-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: var(--space-lg);
}

.gaming-benefit {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
}

.benefit-icon {
    color: var(--color-success);
    font-weight: bold;
}

/* Modification Section */
.modification-section {
    margin-bottom: var(--space-3xl);
}

.subsection-title {
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--space-sm);
}

.subsection-desc {
    text-align: center;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
}

.modification-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-md);
}

.mod-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-lg);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-base);
}

.mod-item:hover {
    border-color: var(--color-primary);
    background: var(--color-surface-hover);
}

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

.mod-label {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.mod-example {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    font-family: var(--font-mono);
}

/* Industry Impact Section */
.industry-impact-section {
    margin-top: var(--space-3xl);
}

.industry-impact-section .section-header {
    margin-bottom: var(--space-2xl);
}

.impact-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.impact-card {
    padding: var(--space-xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all var(--transition-base);
}

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

.impact-card.highlight {
    border-color: rgba(16, 185, 129, 0.4);
    background: rgba(16, 185, 129, 0.05);
}

.impact-card.highlight:hover {
    border-color: var(--color-primary);
}

.impact-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    margin: 0 auto var(--space-md);
    color: var(--color-primary);
}

.impact-card.highlight .impact-icon {
    background: rgba(16, 185, 129, 0.15);
    border-color: rgba(16, 185, 129, 0.3);
}

.impact-value {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text);
    font-family: var(--font-mono);
    margin-bottom: var(--space-xs);
}

.impact-card.highlight .impact-value {
    color: var(--color-primary-light);
}

.impact-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

.impact-desc {
    font-size: 0.85rem;
    line-height: 1.6;
    color: var(--color-text-muted);
    margin: 0;
}

.impact-conclusion {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    text-align: center;
}

.impact-conclusion p {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin: 0;
}

.impact-conclusion strong {
    color: var(--color-primary-light);
}

/* Impact Section Responsive */
@media (max-width: 1024px) {
    .impact-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .impact-grid {
        grid-template-columns: 1fr;
    }

    .impact-conclusion {
        text-align: left;
    }
}

/* Comparison Note */
.comparison-note {
    margin-top: var(--space-xl);
    padding: var(--space-lg);
    background: rgba(16, 185, 129, 0.1);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    text-align: center;
}

.comparison-note strong {
    color: var(--color-primary-light);
}

/* Gaming Section Responsive */
@media (max-width: 1024px) {
    .gaming-grid {
        grid-template-columns: 1fr;
    }

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

    .cost-section {
        grid-template-columns: 1fr;
    }

    .cost-chart {
        margin-top: var(--space-xl);
    }
}

@media (max-width: 768px) {
    .banner-content {
        flex-direction: column;
        text-align: center;
    }

    .banner-icon {
        width: 80px;
        height: 80px;
    }

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

    .cost-stats {
        flex-direction: column;
    }

    .chart-bar {
        width: 80px;
    }

    .bar-fill {
        width: 60px;
    }
}

@media (max-width: 480px) {
    .modification-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* ====================================
   Accessibility - Skip Link
   ==================================== */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-md) var(--space-xl);
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-md);
    z-index: 9999;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--space-md);
}

/* ====================================
   About Section - Stats Box
   ==================================== */
.stats-box {
    margin-top: var(--space-xl);
    padding: var(--space-xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
}

.stats-box h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--space-lg);
    color: var(--color-primary-light);
}

.stats-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.stats-list li {
    padding: var(--space-sm) 0;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.stats-list strong {
    color: var(--color-text);
}

/* About Content H3 Styling */
.about-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: var(--space-xl) 0 var(--space-md);
    color: var(--color-text);
}

.about-content h3:first-of-type {
    margin-top: var(--space-lg);
}

/* ====================================
   Gaming Section - Intro
   ==================================== */
.gaming-intro {
    max-width: 900px;
    margin: 0 auto var(--space-3xl);
    text-align: center;
}

.gaming-intro p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
}

.gaming-intro strong {
    color: var(--color-primary-light);
}

/* ====================================
   Content Grid Layout - Symmetrical
   ==================================== */
.content-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
}

.content-grid.three-cols {
    grid-template-columns: repeat(3, 1fr);
}

.content-grid.four-cols {
    grid-template-columns: repeat(4, 1fr);
}

/* Content Box - For Symmetrical Text Blocks */
.content-box {
    padding: var(--space-xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
}

.content-box h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--color-primary-light);
}

.content-box p {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
}

/* ====================================
   Section Descriptions
   ==================================== */
.section-header .section-desc {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.05rem;
    line-height: 1.7;
}

/* ====================================
   Responsive - New Elements
   ==================================== */
@media (max-width: 768px) {
    .stats-list {
        grid-template-columns: 1fr;
    }

    .content-grid,
    .content-grid.three-cols,
    .content-grid.four-cols {
        grid-template-columns: 1fr;
    }

    .gaming-intro {
        text-align: left;
    }

    .gaming-intro p {
        font-size: 1rem;
    }
}

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

/* ====================================
   Scroll Animations & Micro-interactions
   ==================================== */

/* Fade-in on scroll */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered animation delays */
.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }

/* Scale on scroll */
.scale-in {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}

/* Slide from left */
.slide-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.slide-left.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Slide from right */
.slide-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.slide-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Smooth hover lift for all interactive elements */
.hover-lift {
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* Link hover underline animation */
.link-animated {
    position: relative;
    display: inline-block;
}

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

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

/* Icon hover rotate */
.icon-spin:hover svg {
    animation: iconSpin 0.5s ease-in-out;
}

@keyframes iconSpin {
    0% { transform: rotate(0deg); }
    50% { transform: rotate(15deg); }
    100% { transform: rotate(0deg); }
}

/* Number counter animation */
@keyframes countUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.count-animation {
    animation: countUp 0.5s ease-out forwards;
}

/* Gradient text animation */
.gradient-text-animated {
    background: linear-gradient(90deg, #6366f1, #8b5cf6, #d946ef, #06b6d4, #6366f1);
    background-size: 200% 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientFlow 8s linear infinite;
}

@keyframes gradientFlow {
    0% { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

/* Typing cursor effect */
.typing-cursor::after {
    content: '|';
    animation: blink 1s step-end infinite;
    color: var(--color-primary);
}

@keyframes blink {
    50% { opacity: 0; }
}

/* Ripple effect for buttons */
.ripple {
    position: relative;
    overflow: hidden;
}

.ripple::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

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

/* Glowing border animation */
@keyframes borderGlow {
    0%, 100% { border-color: var(--color-primary); box-shadow: 0 0 10px var(--color-primary-glow); }
    50% { border-color: var(--color-secondary); box-shadow: 0 0 20px var(--color-secondary-glow); }
}

.border-glow-animated {
    animation: borderGlow 3s ease-in-out infinite;
}

/* Selection */
::selection {
    background: var(--color-primary);
    color: white;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-border-light);
}

/* ====================================
   Hero Video Section
   ==================================== */
.hero-video {
    padding: var(--space-xl) 0;
    background: var(--color-bg);
}

.container-wide {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.main-video-container {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-bg-secondary);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.main-video {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    display: block;
    max-height: 500px;
}

.video-overlay {
    position: absolute;
    inset: 0;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: var(--space-xl);
}

/* WASD Controls */
.wasd-controls {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
}

.wasd-hint {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.key-row {
    display: flex;
    gap: 4px;
}

.key {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    backdrop-filter: blur(10px);
    transition: all var(--transition-base);
}

.key.active {
    background: rgba(251, 146, 60, 0.8);
    border-color: rgba(251, 146, 60, 1);
    color: white;
}

/* Video Progress Bar */
.video-progress {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-top: auto;
}

.video-time, .video-duration {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-text-secondary);
}

.progress-bar {
    flex: 1;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    width: 30%;
    background: white;
    border-radius: var(--radius-full);
}

/* ====================================
   Thumbnail Gallery
   ==================================== */
.thumbnail-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.thumbnail-row {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--space-md);
}

.thumbnail-item {
    position: relative;
    aspect-ratio: 16/10;
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all var(--transition-base);
    background: var(--color-bg-secondary);
}

.thumbnail-item video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.thumbnail-item:hover,
.thumbnail-item.active {
    border-color: var(--color-primary);
    transform: scale(1.02);
}

.thumbnail-item.active {
    box-shadow: 0 0 20px var(--color-primary-glow);
}

.thumbnail-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(transparent 50%, rgba(0,0,0,0.7) 100%);
    display: flex;
    align-items: flex-end;
    justify-content: flex-start;
    padding: var(--space-sm);
}

.wasd-mini {
    display: flex;
    gap: 2px;
}

.key-mini {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.6rem;
    font-weight: 600;
    color: var(--color-text-muted);
}

.key-mini.active {
    background: rgba(251, 146, 60, 0.8);
    border-color: rgba(251, 146, 60, 1);
    color: white;
}

/* ====================================
   Emerging Capabilities
   ==================================== */
.emerging-capabilities {
    background: var(--color-bg-secondary);
}

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

.capability-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

.capability-card:hover {
    border-color: var(--color-border-light);
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
}

.capability-video {
    aspect-ratio: 16/9;
    overflow: hidden;
}

.capability-video video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.capability-content {
    padding: var(--space-xl);
}

.capability-content h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.capability-content p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
}

/* ====================================
   Real-time Demo Gallery
   ==================================== */
.realtime-demos {
    background: var(--color-bg);
}

.demo-gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.demo-gallery-item {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-base);
}

.demo-gallery-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.demo-video-container {
    position: relative;
    aspect-ratio: 16/9;
}

.demo-video-container video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.wasd-mini-overlay {
    position: absolute;
    bottom: var(--space-md);
    left: var(--space-md);
    display: flex;
    gap: 2px;
}

/* ====================================
   Scene Selector
   ==================================== */
.scene-selector {
    background: var(--color-bg-secondary);
}

.scene-selector-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-xl);
    align-items: start;
}

.scene-preview {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    aspect-ratio: 16/9;
}

.scene-preview video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.scene-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.3);
}

.scene-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: white;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.scene-controls {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
}

.scene-tabs, .event-tabs {
    margin-bottom: var(--space-xl);
}

.scene-tabs:last-child, .event-tabs:last-child {
    margin-bottom: 0;
}

.scene-tabs h4, .event-tabs h4 {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.tab-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.scene-tab, .event-tab {
    padding: var(--space-sm) var(--space-lg);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
}

.scene-tab:hover, .event-tab:hover {
    background: var(--color-surface-hover);
    border-color: var(--color-border-light);
}

.scene-tab.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.event-tab.active {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: white;
}

/* ====================================
   Action Agent
   ==================================== */
.action-agent {
    background: var(--color-bg);
}

.agent-showcase {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.agent-row {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
}

.agent-row.primary .agent-card {
    flex: 1;
    max-width: 350px;
}

.agent-row.secondary {
    padding: 0 10%;
}

.agent-row.secondary .agent-card {
    flex: 1;
    max-width: 350px;
}

.agent-card {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.agent-card:hover {
    border-color: var(--color-border-light);
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
}

.agent-card video {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    display: block;
}

.agent-overlay {
    position: absolute;
    bottom: var(--space-md);
    left: var(--space-md);
}

/* ====================================
   3D Reconstruction
   ==================================== */
.reconstruction {
    background: var(--color-bg-secondary);
}

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

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

.reconstruction-item h4 {
    font-size: 1rem;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.recon-video, .recon-pointcloud {
    aspect-ratio: 16/9;
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: var(--space-md);
}

.recon-video video, .recon-pointcloud video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.recon-pointcloud {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
}

/* ====================================
   Limitations
   ==================================== */
.limitations {
    background: var(--color-bg);
}

.limitations-content {
    max-width: 900px;
    margin: 0 auto;
}

.limitations-content p {
    color: var(--color-text-secondary);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: var(--space-lg);
}

.limitations-content p:last-child {
    margin-bottom: 0;
}

/* ====================================
   Responsive - New Sections
   ==================================== */
@media (max-width: 1024px) {
    .thumbnail-row {
        grid-template-columns: repeat(5, 1fr);
    }

    .capabilities-grid,
    .demo-gallery-grid,
    .reconstruction-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .scene-selector-container {
        grid-template-columns: 1fr;
    }

    .scene-controls {
        order: 1;
    }

    .scene-preview {
        order: 2;
    }

    .agent-row.secondary {
        padding: 0;
    }
}

@media (max-width: 768px) {
    .thumbnail-row {
        grid-template-columns: repeat(3, 1fr);
    }

    .capabilities-grid,
    .demo-gallery-grid,
    .reconstruction-grid {
        grid-template-columns: 1fr;
    }

    .agent-row {
        flex-direction: column;
        align-items: center;
    }

    .agent-row.primary .agent-card,
    .agent-row.secondary .agent-card {
        max-width: 100%;
        width: 100%;
    }

    .key {
        width: 32px;
        height: 32px;
        font-size: 0.75rem;
    }
}

@media (max-width: 480px) {
    .thumbnail-row {
        grid-template-columns: repeat(2, 1fr);
    }

    .tab-buttons {
        flex-direction: column;
    }

    .scene-tab, .event-tab {
        width: 100%;
        text-align: center;
    }
}

/* ====================================
   Clean Layout Utilities
   ==================================== */

/* Text Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }

.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

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

/* Spacing Utilities */
.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.mx-auto { margin-left: auto; margin-right: auto; }

.p-0 { padding: 0; }
.p-sm { padding: var(--space-sm); }
.p-md { padding: var(--space-md); }
.p-lg { padding: var(--space-lg); }
.p-xl { padding: var(--space-xl); }

/* Flexbox Utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

/* Width Utilities */
.w-full { width: 100%; }
.max-w-sm { max-width: 24rem; }
.max-w-md { max-width: 28rem; }
.max-w-lg { max-width: 32rem; }
.max-w-xl { max-width: 36rem; }
.max-w-2xl { max-width: 42rem; }

/* Border & Rounded */
.rounded-sm { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

/* Display */
.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }
.inline-flex { display: inline-flex; }

/* Divider */
.divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
    margin: var(--space-xl) 0;
}

.divider-vertical {
    width: 1px;
    height: 1.5em;
    background: var(--color-border);
}

/* Card Clean Style */
.card-clean {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
}

.card-clean:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.08);
}

/* Badge Clean Style */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-text-secondary);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.badge-primary {
    background: rgba(16, 185, 129, 0.15);
    color: var(--color-primary-light);
    border-color: rgba(16, 185, 129, 0.3);
}

.badge-success {
    background: rgba(16, 185, 129, 0.15);
    color: var(--color-success);
    border-color: rgba(16, 185, 129, 0.3);
}

/* Link Clean Style */
.link-clean {
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.link-clean:hover {
    color: var(--color-text);
}

/* Opacity utilities */
.opacity-50 { opacity: 0.5; }
.opacity-60 { opacity: 0.6; }
.opacity-70 { opacity: 0.7; }
.opacity-80 { opacity: 0.8; }
.opacity-90 { opacity: 0.9; }