:root {
    --primary: #0047FF;
    --secondary: #FF3366;
    --accent: #6B4EFF;
    --text: #1a1a1a;
    --text-light: #666666;
    --bg: #ffffff;
    --bg-light: #f8f8f8;
    --border: #e0e0e0;
}

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(10px);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: 'Space Mono', monospace;
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text);
}

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

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    color: var(--text);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.3px;
    transition: color 0.3s ease;
}

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

/* Hero Section */
.hero {
    padding: 10rem 3rem 6rem;
    max-width: 1400px;
    margin: 0 auto;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: start;
}

.hero-content h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    line-height: 1.1;
    font-weight: 700;
    letter-spacing: -2px;
    margin-bottom: 2rem;
}

.hero-content h1 .highlight {
    color: var(--primary);
}

.hero-meta {
    font-family: 'Space Mono', monospace;
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    letter-spacing: 0.5px;
}

.hero-description {
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 3rem;
}

.cta-group {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 1rem 2rem;
    font-family: 'Space Mono', monospace;
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-decoration: none;
    border: 2px solid var(--text);
    background: var(--text);
    color: white;
    transition: all 0.3s ease;
    cursor: pointer;
}

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

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

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

.hero-image {
    position: relative;
    height: 500px;
    background: var(--bg-light);
    border: 1px solid var(--border);
    overflow: hidden;
}

.hero-image::after {
    content: 'LAB/XR';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: 'Space Mono', monospace;
    font-size: 6rem;
    font-weight: 700;
    color: rgba(0, 71, 255, 0.05);
    letter-spacing: -3px;
}

/* Stats Bar */
.stats-bar {
    padding: 4rem 3rem;
    background: var(--text);
    color: white;
}

.stats-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
}

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

.stat-number {
    font-family: 'Space Mono', monospace;
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -1px;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
    letter-spacing: 0.5px;
}

/* About Section */
.about {
    padding: 8rem 3rem;
    max-width: 1400px;
    margin: 0 auto;
}

.section-label {
    font-family: 'Space Mono', monospace;
    font-size: 0.85rem;
    color: var(--primary);
    margin-bottom: 1rem;
    letter-spacing: 1px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3.5rem);
    line-height: 1.2;
    font-weight: 700;
    letter-spacing: -1.5px;
    margin-bottom: 4rem;
    max-width: 800px;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-top: 4rem;
}

.about-card {
    padding: 2.5rem 0;
    border-top: 2px solid var(--border);
}

.about-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
}

.about-card p {
    color: var(--text-light);
    line-height: 1.8;
}

/* Focus Areas */
.focus-areas {
    padding: 8rem 3rem;
    background: var(--bg-light);
}

.focus-container {
    max-width: 1400px;
    margin: 0 auto;
}

.focus-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
    margin-top: 4rem;
}

.focus-item {
    padding: 3rem;
    border: 1px solid var(--border);
    border-collapse: collapse;
    transition: all 0.3s ease;
}

.focus-item:hover {
    background: white;
    transform: scale(1.02);
    z-index: 10;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.focus-number {
    font-family: 'Space Mono', monospace;
    font-size: 0.85rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.focus-item h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
}

.focus-item p {
    color: var(--text-light);
    line-height: 1.7;
}

/* Research Areas */
.research {
    padding: 8rem 3rem;
    max-width: 1400px;
    margin: 0 auto;
}

.research-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 3rem;
}

.tag {
    padding: 0.8rem 1.5rem;
    font-family: 'Space Mono', monospace;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    border: 2px solid var(--border);
    background: white;
    transition: all 0.3s ease;
    cursor: pointer;
}

.tag:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

/* Mission Statement */
.mission {
    padding: 8rem 3rem;
    background: var(--primary);
    color: white;
}

.mission-container {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.mission-quote {
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    line-height: 1.6;
    font-weight: 500;
    letter-spacing: -0.5px;
}

.mission-quote .highlight {
    font-weight: 700;
    border-bottom: 3px solid rgba(255, 255, 255, 0.3);
}

.mission-author {
    font-family: 'Space Mono', monospace;
    font-size: 0.9rem;
    margin-top: 2rem;
    opacity: 0.8;
}

/* Partnership */
.partnership {
    padding: 8rem 3rem;
    max-width: 1400px;
    margin: 0 auto;
}

.partnership-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    margin-top: 4rem;
}

.partnership-content h3 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    letter-spacing: -0.5px;
}

.partnership-content p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.partnership-logos {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.logo-item {
    padding: 2rem;
    border: 1px solid var(--border);
    font-family: 'Space Mono', monospace;
    font-weight: 700;
    font-size: 1.1rem;
    text-align: center;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
}

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

/* Footer */
footer {
    padding: 4rem 3rem 2rem;
    background: var(--bg-light);
    border-top: 1px solid var(--border);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-section h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    letter-spacing: -0.3px;
}

.footer-section p {
    color: var(--text-light);
    line-height: 1.7;
    font-size: 0.95rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 0.8rem;
}

.footer-section a {
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    max-width: 1400px;
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-light);
}

/* Responsive */
@media (min-width: 1920px) {
    .nav-container,
    .hero,
    .about,
    .focus-container,
    .research,
    .mission-container,
    .partnership,
    .footer-content,
    .footer-bottom {
        max-width: 1600px;
    }

    .hero {
        padding: 12rem 4rem 8rem;
    }

    .hero-grid {
        gap: 8rem;
    }

    .hero-content h1 {
        font-size: 5.5rem;
        line-height: 1.05;
    }

    .hero-description {
        font-size: 1.35rem;
    }

    .hero-image {
        height: 600px;
    }

    .hero-image::after {
        font-size: 8rem;
    }

    .stats-bar {
        padding: 5rem 4rem;
    }

    .stat-number {
        font-size: 4rem;
    }

    .stat-label {
        font-size: 1.1rem;
    }

    .about,
    .focus-areas,
    .research,
    .mission,
    .partnership {
        padding: 10rem 4rem;
    }

    .section-title {
        font-size: 4rem;
        max-width: 1000px;
    }

    .about-card h3,
    .focus-item h3 {
        font-size: 1.8rem;
    }

    .about-card p,
    .focus-item p {
        font-size: 1.1rem;
    }

    .focus-list {
        gap: 2rem;
        margin-top: 5rem;
    }

    .focus-item {
        padding: 4rem;
    }

    .mission-quote {
        font-size: 2.8rem;
    }

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

    .partnership-grid {
        gap: 8rem;
    }

    .partnership-content h3 {
        font-size: 2.2rem;
    }

    .partnership-content p {
        font-size: 1.1rem;
    }

    .logo-item {
        padding: 2.5rem;
        font-size: 1.3rem;
    }

    footer {
        padding: 5rem 4rem 3rem;
    }

    .footer-content {
        gap: 5rem;
    }
}

@media (min-width: 2560px) {
    .nav-container,
    .hero,
    .about,
    .focus-container,
    .research,
    .mission-container,
    .partnership,
    .footer-content,
    .footer-bottom {
        max-width: 2000px;
    }

    body {
        font-size: 18px;
    }

    .nav-container {
        padding: 2rem 5rem;
    }

    .logo {
        font-size: 1.6rem;
    }

    .nav-links {
        gap: 3.5rem;
    }

    .nav-links a {
        font-size: 1.1rem;
    }

    .hero {
        padding: 14rem 5rem 10rem;
    }

    .hero-grid {
        gap: 10rem;
    }

    .hero-content h1 {
        font-size: 7rem;
    }

    .hero-meta {
        font-size: 1rem;
    }

    .hero-description {
        font-size: 1.6rem;
    }

    .btn {
        padding: 1.4rem 2.8rem;
        font-size: 1.1rem;
    }

    .hero-image {
        height: 800px;
    }

    .hero-image::after {
        font-size: 10rem;
    }

    .stats-bar {
        padding: 6rem 5rem;
    }

    .stat-number {
        font-size: 5rem;
    }

    .stat-label {
        font-size: 1.3rem;
    }

    .about,
    .focus-areas,
    .research,
    .mission,
    .partnership {
        padding: 12rem 5rem;
    }

    .section-label {
        font-size: 1rem;
    }

    .section-title {
        font-size: 5rem;
        max-width: 1200px;
        margin-bottom: 5rem;
    }

    .about-grid {
        gap: 4rem;
        margin-top: 5rem;
    }

    .about-card {
        padding: 3rem 0;
    }

    .about-card h3,
    .focus-item h3 {
        font-size: 2.2rem;
    }

    .about-card p,
    .focus-item p {
        font-size: 1.3rem;
    }

    .focus-list {
        gap: 3rem;
        margin-top: 6rem;
    }

    .focus-item {
        padding: 5rem;
    }

    .focus-number {
        font-size: 1rem;
    }

    .mission-quote {
        font-size: 3.5rem;
    }

    .mission-author {
        font-size: 1.1rem;
        margin-top: 3rem;
    }

    .research-tags {
        gap: 1.5rem;
        margin-top: 4rem;
    }

    .tag {
        padding: 1.2rem 2.5rem;
        font-size: 1.1rem;
    }

    .partnership-grid {
        gap: 10rem;
        margin-top: 5rem;
    }

    .partnership-content h3 {
        font-size: 2.8rem;
    }

    .partnership-content p {
        font-size: 1.3rem;
    }

    .logo-item {
        padding: 3rem;
        font-size: 1.6rem;
    }

    footer {
        padding: 6rem 5rem 3rem;
    }

    .footer-content {
        gap: 6rem;
        margin-bottom: 4rem;
    }

    .footer-section h3 {
        font-size: 1.4rem;
    }

    .footer-section p,
    .footer-section a {
        font-size: 1.1rem;
    }

    .footer-bottom {
        font-size: 1rem;
    }
}

@media (min-width: 3840px) {
    .nav-container,
    .hero,
    .about,
    .focus-container,
    .research,
    .mission-container,
    .partnership,
    .footer-content,
    .footer-bottom {
        max-width: 3000px;
    }

    body {
        font-size: 22px;
    }

    .nav-container {
        padding: 3rem 8rem;
    }

    .logo {
        font-size: 2.2rem;
    }

    .nav-links {
        gap: 5rem;
    }

    .nav-links a {
        font-size: 1.4rem;
    }

    .hero {
        padding: 18rem 8rem 14rem;
    }

    .hero-grid {
        gap: 14rem;
    }

    .hero-content h1 {
        font-size: 10rem;
        letter-spacing: -4px;
    }

    .hero-meta {
        font-size: 1.3rem;
        margin-bottom: 3rem;
    }

    .hero-description {
        font-size: 2.2rem;
        margin-bottom: 4rem;
    }

    .btn {
        padding: 2rem 4rem;
        font-size: 1.4rem;
    }

    .hero-image {
        height: 1200px;
    }

    .hero-image::after {
        font-size: 16rem;
    }

    .stats-bar {
        padding: 8rem 8rem;
    }

    .stats-container {
        gap: 5rem;
    }

    .stat-number {
        font-size: 7rem;
    }

    .stat-label {
        font-size: 1.8rem;
    }

    .about,
    .focus-areas,
    .research,
    .mission,
    .partnership {
        padding: 16rem 8rem;
    }

    .section-label {
        font-size: 1.3rem;
        margin-bottom: 2rem;
    }

    .section-title {
        font-size: 7rem;
        max-width: 1800px;
        margin-bottom: 7rem;
    }

    .about-grid {
        gap: 6rem;
        margin-top: 7rem;
    }

    .about-card {
        padding: 4rem 0;
        border-top: 3px solid var(--border);
    }

    .about-card h3,
    .focus-item h3 {
        font-size: 3rem;
        margin-bottom: 2rem;
    }

    .about-card p,
    .focus-item p {
        font-size: 1.8rem;
        line-height: 1.9;
    }

    .focus-list {
        gap: 4rem;
        margin-top: 8rem;
    }

    .focus-item {
        padding: 7rem;
        border: 2px solid var(--border);
    }

    .focus-number {
        font-size: 1.4rem;
        margin-bottom: 2rem;
    }

    .mission-quote {
        font-size: 5rem;
        line-height: 1.5;
    }

    .mission-author {
        font-size: 1.5rem;
        margin-top: 4rem;
    }

    .research-tags {
        gap: 2rem;
        margin-top: 6rem;
    }

    .tag {
        padding: 1.8rem 3.5rem;
        font-size: 1.5rem;
        border: 3px solid var(--border);
    }

    .partnership-grid {
        gap: 14rem;
        margin-top: 7rem;
    }

    .partnership-content h3 {
        font-size: 4rem;
        margin-bottom: 2.5rem;
    }

    .partnership-content p {
        font-size: 1.8rem;
        margin-bottom: 2.5rem;
    }

    .partnership-logos {
        gap: 3rem;
    }

    .logo-item {
        padding: 4rem;
        font-size: 2.2rem;
        border: 2px solid var(--border);
    }

    footer {
        padding: 8rem 8rem 4rem;
    }

    .footer-content {
        gap: 8rem;
        margin-bottom: 5rem;
    }

    .footer-section h3 {
        font-size: 2rem;
        margin-bottom: 2.5rem;
    }

    .footer-section p,
    .footer-section a {
        font-size: 1.5rem;
        line-height: 1.9;
    }

    .footer-section li {
        margin-bottom: 1.2rem;
    }

    .footer-bottom {
        padding-top: 3rem;
        font-size: 1.3rem;
        border-top: 2px solid var(--border);
    }
}

@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .hero-image {
        height: 400px;
    }

    .partnership-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .focus-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 1.5rem 2rem;
    }

    .nav-links {
        display: none;
    }

    .hero,
    .about,
    .focus-areas,
    .research,
    .mission,
    .partnership {
        padding: 4rem 2rem;
    }

    .stats-bar {
        padding: 3rem 2rem;
    }

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

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

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
    }
}