* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --accent: #22d3ee;
    --bg-dark: #0a0a0f;
    --bg-card: #12121a;
    --bg-card-hover: #1a1a25;
    --text: #ffffff;
    --text-muted: #94a3b8;
    --border: #1e1e2e;
    --gradient: linear-gradient(135deg, #6366f1 0%, #22d3ee 100%);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1rem 2rem;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

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

.btn-nav {
    background: var(--gradient);
    color: var(--text) !important;
    padding: 0.5rem 1.25rem;
    border-radius: 8px;
    font-weight: 500;
}

/* Hero */
.hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 8rem 2rem 4rem;
}

.hero-badge {
    display: inline-block;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    color: var(--primary);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

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

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    max-width: 500px;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.btn-primary {
    background: var(--gradient);
    color: var(--text);
    padding: 0.875rem 2rem;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(99, 102, 241, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--text);
    padding: 0.875rem 2rem;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    border: 1px solid var(--border);
    transition: background 0.2s;
}

.btn-secondary:hover {
    background: var(--bg-card);
}

.hero-stats {
    display: flex;
    gap: 3rem;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

/* Video Preview */
.video-preview {
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid var(--border);
    overflow: hidden;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.5);
}

.preview-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-dark);
    border-bottom: 1px solid var(--border);
}

.preview-dots {
    display: flex;
    gap: 6px;
}

.preview-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border);
}

.preview-dots span:first-child { background: #ff5f57; }
.preview-dots span:nth-child(2) { background: #febc2e; }
.preview-dots span:last-child { background: #28c840; }

.preview-title {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.preview-content {
    padding: 2rem;
}

.preview-player video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 12px;
    cursor: pointer;
}

.sound-hint {
    position: absolute;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.7);
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    font-size: 0.8rem;
    pointer-events: none;
    white-space: nowrap;
}

.preview-player {
    aspect-ratio: 9/16;
    max-height: 400px;
    background: linear-gradient(135deg, #1a1a2e 0%, #0f0f1a 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.play-button {
    width: 60px;
    height: 60px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    cursor: pointer;
    transition: transform 0.2s;
    z-index: 2;
}

.play-button:hover {
    transform: scale(1.1);
}

.preview-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1.5rem;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
}

.preview-text {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.preview-ticker {
    font-size: 0.8rem;
    color: var(--accent);
}

/* Logos */
.logos {
    padding: 4rem 2rem;
    text-align: center;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.logos p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

.logo-grid {
    display: flex;
    justify-content: center;
    gap: 4rem;
    flex-wrap: wrap;
}

.partner-logo {
    color: var(--text-muted);
    font-size: 1.1rem;
    font-weight: 600;
    opacity: 0.6;
}

/* Sections */
section {
    padding: 6rem 2rem;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 4rem;
}

.section-tag {
    display: inline-block;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    color: var(--primary);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* How It Works */
.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.process-step {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
    position: relative;
    transition: transform 0.2s, border-color 0.2s;
}

.process-step:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
}

.step-number {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 600;
}

.step-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.process-step h3 {
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
}

.process-step p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Technology */
.technology {
    background: var(--bg-card);
}

.tech-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    max-width: 1200px;
    margin: 0 auto;
    align-items: center;
}

.tech-text h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.tech-text > p {
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.tech-features {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.tech-feature {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.feature-icon {
    font-size: 1.5rem;
    background: var(--bg-dark);
    padding: 0.75rem;
    border-radius: 12px;
}

.tech-feature h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.tech-feature p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Architecture Diagram */
.architecture-diagram {
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
}

.arch-layer {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
}

.arch-layer.highlight {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
}

.arch-layer span {
    display: block;
    font-weight: 600;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.arch-items {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.arch-items div {
    background: var(--bg-dark);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.arch-arrow {
    text-align: center;
    padding: 0.75rem;
    color: var(--primary);
    font-size: 1.5rem;
}

/* Use Cases */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.case-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
    transition: transform 0.2s, border-color 0.2s;
}

.case-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
}

.case-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.case-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.75rem;
}

.case-card > p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.case-card ul {
    list-style: none;
}

.case-card li {
    color: var(--text-muted);
    font-size: 0.9rem;
    padding: 0.4rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.case-card li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--primary);
}

/* Metrics */
.metrics {
    background: var(--gradient);
    text-align: center;
}

.metrics-content {
    max-width: 1000px;
    margin: 0 auto;
}

.metrics h2 {
    font-size: 2rem;
    margin-bottom: 3rem;
}

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

.metric {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 2rem;
}

.metric-value {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.metric-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* Team */
.team-grid {
    display: flex;
    justify-content: center;
    gap: 2rem;
}

.team-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    max-width: 300px;
}

.team-avatar {
    width: 80px;
    height: 80px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1rem;
}

.team-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.25rem;
}

.team-role {
    color: var(--primary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.team-bio {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Contact */
.contact {
    text-align: center;
    background: var(--bg-card);
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
}

.contact h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact > .contact-content > p {
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    text-align: left;
}

.contact-form input,
.contact-form textarea {
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1rem;
    color: var(--text);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.2s;
}

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

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: var(--text-muted);
}

.contact-form textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-form button {
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

/* Footer */
.footer {
    border-top: 1px solid var(--border);
    padding: 4rem 2rem 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    margin-bottom: 3rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-brand .logo-icon {
    font-size: 1.5rem;
}

.footer-brand span:nth-child(2) {
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 4rem;
}

.footer-col h4 {
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.footer-col a {
    display: block;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    padding: 0.3rem 0;
    transition: color 0.2s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-subtitle {
        margin: 0 auto 2rem;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-visual {
        display: none;
    }
    
    .process-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tech-content {
        grid-template-columns: 1fr;
    }
    
    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .process-grid,
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 2rem;
    }
    
    .footer-links {
        gap: 2rem;
    }
}