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

body {
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: #0a0a0a;
    color: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(20px);
    z-index: 1000;
    padding: 20px 0;
    transition: all 0.3s ease;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(45deg, #00d4ff, #7c3aed);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    color: #ffffff;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
}

.nav-links a:hover {
    color: #00d4ff;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(45deg, #00d4ff, #7c3aed);
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.quantum-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, rgba(0, 212, 255, 0.1) 0%, rgba(124, 58, 237, 0.1) 50%, transparent 100%);
}

.particles {
    position: absolute;
    width: 100%;
    height: 100%;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: #00d4ff;
    border-radius: 50%;
    animation: float 10s infinite linear;
}

@keyframes float {
    0% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100vh) rotate(360deg);
        opacity: 0;
    }
}

.hero-content {
    text-align: center;
    z-index: 2;
    max-width: 800px;
}

.hero h1 {
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 900;
    margin-bottom: 30px;
    background: linear-gradient(90deg, #ffffff, #00d4ff, #7c3aed);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: glow 3s ease-in-out infinite alternate;
    letter-spacing: -2px;
    line-height: 1.1;
}

@keyframes glow {
    from { filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.5)); }
    to { filter: drop-shadow(0 0 30px rgba(124, 58, 237, 0.5)); }
}

.hero p {
    font-size: 1.2rem;
    color: #a0a0a0;
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.status-badge {
    display: inline-block;
    background: linear-gradient(45deg, #27ae60, #2ecc71);
    color: white;
    padding: 12px 24px;
    border-radius: 25px;
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 30px;
    clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
}

.cta-button {
    display: inline-block;
    padding: 18px 45px;
    background: linear-gradient(45deg, #00d4ff, #7c3aed);
    color: white;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    clip-path: polygon(0 0, calc(100% - 15px) 0, 100% 15px, 100% 100%, 15px 100%, 0 calc(100% - 15px));
    text-transform: uppercase;
    letter-spacing: 1px;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.cta-button:hover::before {
    left: 100%;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

/* Sections */
.section {
    padding: 100px 0;
    position: relative;
}

.section-title {
    font-size: 3rem;
    font-weight: 900;
    text-align: center;
    margin-bottom: 60px;
    background: linear-gradient(90deg, #ffffff, #00d4ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -1px;
    line-height: 1.1;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 40px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, #00d4ff, #7c3aed);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.card:hover::before {
    transform: scaleX(1);
}

.card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 20px 40px rgba(0, 212, 255, 0.1);
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #00d4ff;
}

.card p {
    color: #a0a0a0;
    line-height: 1.8;
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.about-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 40px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, #00d4ff, #7c3aed);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.about-card:hover::before {
    transform: scaleX(1);
}

.about-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 20px 40px rgba(0, 212, 255, 0.1);
}

.about-card .card-header h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #00d4ff;
}

.about-card .card-content p {
    color: #a0a0a0;
    line-height: 1.8;
}

/* Innovation Section */
.innovation-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
    margin-top: 50px;
}

.innovation-content h3 {
    font-size: 2rem;
    color: #00d4ff;
    margin-bottom: 20px;
}

.innovation-content p {
    font-size: 1.1rem;
    color: #e0e0e0;
    margin-bottom: 20px;
}

.metric-highlight {
    background: rgba(0, 212, 255, 0.1);
    padding: 20px;
    border-radius: 10px;
    margin: 20px 0;
    border-left: 4px solid #00d4ff;
}

.metric-value {
    font-size: 2.5rem;
    font-weight: 900;
    color: #00d4ff;
    display: block;
}

.metric-label {
    font-size: 1rem;
    color: #a0a0a0;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Results Section */
.results-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin: 50px 0;
}

.stat-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 30px;
    text-align: center;
    border: 1px solid rgba(0, 212, 255, 0.3);
    clip-path: polygon(15px 0, 100% 0, 100% calc(100% - 15px), calc(100% - 15px) 100%, 0 100%, 0 15px);
}

.stat-number {
    font-size: 3rem;
    font-weight: 900;
    color: #00d4ff;
    display: block;
    margin-bottom: 10px;
}

.stat-description {
    color: #a0a0a0;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Technical Architecture */
.architecture-diagram {
    background: rgba(255, 255, 255, 0.05);
    padding: 40px;
    border-radius: 15px;
    margin: 40px 0;
    font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
    font-size: 1rem;
    line-height: 1.6;
    color: #00d4ff;
    border: 1px solid rgba(0, 212, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.architecture-diagram::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.05), rgba(124, 58, 237, 0.05));
    z-index: -1;
}

/* Critical Questions */
.questions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.question-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 30px;
    border-left: 4px solid #ff0080;
    position: relative;
}

.question-card h4 {
    color: #ff0080;
    margin-bottom: 15px;
    font-size: 1.2rem;
    text-shadow: 0 0 10px rgba(255, 0, 128, 0.5);
}

.question-card p {
    color: #e0e0e0;
}

/* Footer */
footer {
    background: rgba(255, 255, 255, 0.05);
    padding: 50px 0;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-section h3 {
    color: #00d4ff;
    margin-bottom: 15px;
}

.footer-section p {
    color: #a0a0a0;
    line-height: 1.8;
}

.footer-section a {
    color: #00d4ff;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #7c3aed;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    color: #666;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .innovation-grid {
        grid-template-columns: 1fr;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .section {
        padding: 60px 0;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Loading animation */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #0a0a0a;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 1;
    transition: opacity 0.5s ease;
}

.loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(0, 212, 255, 0.3);
    border-top: 3px solid #00d4ff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Drift Types */
.drift-types {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.drift-type {
    background: rgba(0, 212, 255, 0.1);
    padding: 20px;
    border-radius: 10px;
    border: 1px solid rgba(0, 212, 255, 0.3);
}

.drift-type h4 {
    color: #00d4ff;
    margin-bottom: 10px;
}

.drift-type p {
    color: #a0a0a0;
    font-size: 0.9rem;
}

/* Progress indicator */
.progress-section {
    margin: 50px 0;
}

.progress-item {
    display: flex;
    align-items: center;
    margin: 20px 0;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
}

.progress-check {
    width: 24px;
    height: 24px;
    background: #27ae60;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    font-size: 14px;
}

.progress-content h4 {
    color: #00d4ff;
    margin-bottom: 5px;
}

.progress-content p {
    color: #a0a0a0;
    font-size: 0.9rem;
}

/* Quantum-PINN Integration Animation */
.integration-visual {
    position: relative;
    height: 200px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    margin: 40px 0;
}

.pinn-brain {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: radial-gradient(circle, #7c3aed 30%, rgba(124, 58, 237, 0.3) 60%, transparent 60%);
    animation: brain-pulse 2s infinite;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    text-align: center;
}

.quantum-computer {
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, #00d4ff, #7c3aed);
    transform: rotate(45deg);
    animation: quantum-spin 4s infinite linear;
    position: relative;
}

.quantum-computer::before {
    content: '⚛';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-45deg);
    font-size: 30px;
    color: white;
}

.data-stream {
    flex: 1;
    height: 4px;
    margin: 0 20px;
    background: repeating-linear-gradient(
        90deg,
        transparent,
        transparent 10px,
        #00d4ff 10px,
        #00d4ff 20px
    );
    animation: stream-flow 1s infinite linear;
    border-radius: 2px;
}

@keyframes brain-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes quantum-spin {
    0% { transform: rotate(45deg); }
    100% { transform: rotate(405deg); }
}

@keyframes stream-flow {
    0% { background-position: 0 0; }
    100% { background-position: 40px 0; }
}

/* Validation status for architecture section */
.validation-status {
    display: flex;
    gap: 20px;
    margin: 20px 0 40px 0;
    justify-content: center;
}

.status-badge-arch {
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid #00d4ff;
    padding: 10px 20px;
    border-radius: 20px;
    font-size: 14px;
    animation: badge-glow 2s infinite alternate;
}

@keyframes badge-glow {
    0% { box-shadow: 0 0 5px rgba(0, 212, 255, 0.3); }
    100% { box-shadow: 0 0 20px rgba(0, 212, 255, 0.6); }
}

/* System Status Panel */
.system-status-panel {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 15px;
    padding: 40px;
    margin: 50px 0;
    position: relative;
    overflow: hidden;
}

.system-status-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.02), rgba(124, 58, 237, 0.02));
    z-index: -1;
}

.system-status-panel h3 {
    color: #00d4ff;
    font-size: 2rem;
    margin-bottom: 30px;
    text-align: center;
    font-weight: 700;
}

.status-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 25px;
}

.status-meter {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 25px;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(0, 212, 255, 0.1);
    transition: all 0.3s ease;
}

.status-meter:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(0, 212, 255, 0.3);
    transform: translateY(-2px);
}

.meter-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.meter-title {
    font-size: 1.1rem;
    color: #00d4ff;
    font-weight: 600;
}

.meter-value {
    font-size: 1.2rem;
    color: #27ae60;
    font-weight: 700;
    background: rgba(39, 174, 96, 0.1);
    padding: 5px 12px;
    border-radius: 20px;
    border: 1px solid rgba(39, 174, 96, 0.3);
}

.status-meter .progress-bar {
    height: 6px;
    background: linear-gradient(90deg, #00d4ff, #7c3aed);
    animation: progress-fill-status 3s infinite;
    border-radius: 3px;
    margin-bottom: 15px;
}

.meter-description {
    color: #e0e0e0;
    font-size: 0.95rem;
    line-height: 1.6;
    font-weight: 400;
}

@keyframes progress-fill-status {
    0% { width: 0%; opacity: 0.6; }
    70% { width: 100%; opacity: 1; }
    100% { width: 100%; opacity: 0.8; }
}

/* Neural Network Animation for Innovation Section */
.neural-network-showcase {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 60px 0;
    padding: 50px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 15px;
    border: 1px solid rgba(124, 58, 237, 0.2);
}

.neural-network {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    align-items: center;
    padding: 20px;
}

.neural-node {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: radial-gradient(circle, #7c3aed, #00d4ff);
    animation: neural-pulse 2s infinite ease-in-out;
    margin: 0 auto;
    position: relative;
}

.neural-node:nth-child(2) { animation-delay: 0.2s; }
.neural-node:nth-child(3) { animation-delay: 0.4s; }
.neural-node:nth-child(4) { animation-delay: 0.6s; }
.neural-node:nth-child(5) { animation-delay: 0.8s; }
.neural-node:nth-child(6) { animation-delay: 1.0s; }

.connection-line {
    width: 120px;
    height: 3px;
    background: linear-gradient(90deg, transparent, #00d4ff, transparent);
    animation: data-flow 1s infinite;
    margin: 0 40px;
}

@keyframes neural-pulse {
    0%, 100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(124, 58, 237, 0.7); }
    50% { transform: scale(1.1); box-shadow: 0 0 0 10px rgba(124, 58, 237, 0); }
}

@keyframes data-flow {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}

/* Quantum Circuit Animation for Next Steps Section */
.quantum-circuit-showcase {
    display: flex;
    flex-direction: column;
    gap: 30px;
    align-items: center;
    margin: 60px 0;
    padding: 40px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 15px;
    border: 1px solid rgba(0, 212, 255, 0.2);
}

.quantum-circuit {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
}

.qubit-line {
    width: 120px;
    height: 3px;
    background: linear-gradient(90deg, #00d4ff, #7c3aed);
    position: relative;
    animation: quantum-flow 2s infinite;
    border-radius: 2px;
}

.quantum-gate {
    width: 50px;
    height: 50px;
    border: 2px solid #00d4ff;
    background: rgba(0, 212, 255, 0.1);
    animation: pulse 1.5s infinite;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: #00d4ff;
    font-size: 18px;
}

@keyframes quantum-flow {
    0% { transform: scaleX(0); transform-origin: left; }
    100% { transform: scaleX(1); transform-origin: left; }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

/* Full-width Innovation Sections */
.innovation-section-full {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 15px;
    padding: 40px;
    margin: 40px 0;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.innovation-section-full:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(0, 212, 255, 0.4);
    transform: translateY(-2px);
}

.innovation-section-full::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.02), rgba(124, 58, 237, 0.02));
    z-index: -1;
}

.innovation-icon {
    font-size: 3rem;
    display: inline-block;
    margin-bottom: 20px;
    background: linear-gradient(45deg, #00d4ff, #7c3aed);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.3));
}

.innovation-section-full h3 {
    font-size: 2rem;
    color: #00d4ff;
    margin-bottom: 15px;
    font-weight: 700;
}

.innovation-section-full p {
    font-size: 1.1rem;
    color: #e0e0e0;
    margin-bottom: 25px;
    line-height: 1.7;
}

/* Sexy Code Block */
.code-block {
    background: #0d1117;
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 12px;
    margin: 30px 0;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.code-header {
    background: linear-gradient(90deg, rgba(0, 212, 255, 0.1), rgba(124, 58, 237, 0.1));
    padding: 15px 25px;
    border-bottom: 1px solid rgba(0, 212, 255, 0.2);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.code-title {
    color: #00d4ff;
    font-weight: 600;
    font-size: 1rem;
}

.code-lang {
    background: rgba(0, 212, 255, 0.2);
    color: #00d4ff;
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
}

.code-content {
    padding: 25px;
    font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
    font-size: 0.95rem;
    line-height: 1.6;
    color: #e6edf3;
    background: #0d1117;
}

.code-comment { color: #7d8590; }
.code-keyword { color: #ff7b72; font-weight: 600; }
.code-operator { color: #79c0ff; }
.code-variable { color: #ffa657; }
.code-function { color: #d2a8ff; }
.code-number { color: #a5d6ff; }

/* Brain Icon Styling */
.brain-icon {
    font-size: 2.5rem;
    filter: drop-shadow(0 0 10px rgba(124, 58, 237, 0.6));
}

/* Lindblad Equation Section */
.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: #a0a0a0;
    margin-bottom: 60px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.equation-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    margin: 60px 0;
    align-items: stretch;
}

.equation-container {
    background: #0d1117;
    border: 2px solid rgba(0, 212, 255, 0.4);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.2);
}

.equation-header {
    background: linear-gradient(90deg, rgba(0, 212, 255, 0.15), rgba(124, 58, 237, 0.15));
    padding: 20px 30px;
    border-bottom: 1px solid rgba(0, 212, 255, 0.3);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.equation-title {
    color: #00d4ff;
    font-weight: 700;
    font-size: 1.2rem;
}

.equation-badge {
    background: rgba(0, 212, 255, 0.3);
    color: #00d4ff;
    padding: 6px 15px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
}

.equation-content {
    padding: 40px 30px;
}

.main-equation {
    font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
    font-size: 1.8rem;
    line-height: 1.4;
    text-align: center;
    margin-bottom: 40px;
    animation: equation-glow 3s ease-in-out infinite alternate;
}

@keyframes equation-glow {
    0% { text-shadow: 0 0 20px rgba(0, 212, 255, 0.3); }
    100% { text-shadow: 0 0 30px rgba(124, 58, 237, 0.5); }
}

.math-operator { color: #ff7b72; font-weight: 600; }
.math-variable { color: #ffa657; font-weight: 500; }
.math-equals { color: #79c0ff; font-weight: 700; margin: 0 10px; }
.math-bracket { color: #a5d6ff; font-weight: 600; }
.math-comma { color: #e6edf3; }
.math-plus { color: #79c0ff; font-weight: 700; margin: 0 10px; }
.math-fraction { color: #d2a8ff; font-weight: 600; }

.equation-breakdown {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.term-explanation {
    background: rgba(255, 255, 255, 0.05);
    padding: 15px;
    border-radius: 10px;
    text-align: center;
    border: 1px solid rgba(0, 212, 255, 0.2);
}

.term-highlight {
    display: block;
    font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 8px;
    padding: 5px;
    border-radius: 5px;
}

.term-highlight.unitary { 
    background: rgba(121, 192, 255, 0.2); 
    color: #79c0ff; 
}
.term-highlight.dissipative { 
    background: rgba(255, 166, 87, 0.2); 
    color: #ffa657; 
}
.term-highlight.normalization { 
    background: rgba(210, 168, 255, 0.2); 
    color: #d2a8ff; 
}

.term-description {
    color: #e6edf3;
    font-size: 0.9rem;
    font-weight: 500;
}

.equation-description {
    margin-top: 40px;
    padding: 30px;
    border-top: 1px solid rgba(0, 212, 255, 0.2);
    background: rgba(255, 255, 255, 0.02);
    border-radius: 0 0 10px 10px;
}

.equation-description p {
    color: #e6edf3;
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 20px;
    text-align: justify;
}

.equation-description p:last-child {
    margin-bottom: 0;
}

.equation-description strong {
    color: #00d4ff;
    font-weight: 600;
}

/* Dynamic Visualization */
.dynamics-visualization {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(124, 58, 237, 0.3);
    border-radius: 15px;
    padding: 30px;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.dynamics-visualization h4 {
    color: #7c3aed;
    text-align: center;
    margin-bottom: 30px;
    font-size: 1.3rem;
}

.state-evolution {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 30px;
}

.density-matrix {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    padding: 20px;
    border: 2px solid rgba(124, 58, 237, 0.4);
    border-radius: 10px;
    background: rgba(124, 58, 237, 0.1);
}

.matrix-element {
    background: rgba(124, 58, 237, 0.3);
    color: #7c3aed;
    padding: 15px;
    text-align: center;
    font-weight: 600;
    border-radius: 5px;
    animation: matrix-pulse 2s infinite ease-in-out;
}

@keyframes matrix-pulse {
    0%, 100% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.05); opacity: 1; }
}

.evolution-arrow {
    font-size: 2rem;
    color: #00d4ff;
    font-weight: bold;
    animation: arrow-pulse 2s infinite;
}

@keyframes arrow-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.evolved-state {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.constraint-indicator {
    background: rgba(39, 174, 96, 0.2);
    color: #27ae60;
    padding: 8px 12px;
    border-radius: 8px;
    border: 1px solid rgba(39, 174, 96, 0.4);
    font-size: 0.85rem;
    font-weight: 600;
    text-align: center;
}

.evolution-description {
    border-top: 1px solid rgba(124, 58, 237, 0.3);
    padding-top: 25px;
    flex-grow: 1;
}

.evolution-description p {
    color: #e6edf3;
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 18px;
    text-align: justify;
}

.evolution-description p:last-child {
    margin-bottom: 0;
}

.evolution-description strong {
    color: #7c3aed;
    font-weight: 600;
}

/* Physics Insights */
.physics-insights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.insight-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
}

.insight-card:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(0, 212, 255, 0.4);
    transform: translateY(-5px);
}

.insight-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
    background: linear-gradient(45deg, #00d4ff, #7c3aed);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.3));
}

.insight-card h4 {
    color: #00d4ff;
    font-size: 1.3rem;
    margin-bottom: 15px;
    font-weight: 700;
}

.insight-card p {
    color: #e0e0e0;
    line-height: 1.6;
    font-size: 1rem;
}

/* Responsive Design for Equation Section */
@media (max-width: 768px) {
    .equation-showcase {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .main-equation {
        font-size: 1.4rem;
    }
    
    .equation-breakdown {
        grid-template-columns: 1fr;
    }
}

/* Introduction Tabbed Section */
.introduction-section {
    background: rgba(255, 255, 255, 0.01);
    border-bottom: 1px solid rgba(0, 212, 255, 0.1);
}

.tab-nav {
    display: flex;
    justify-content: center;
    margin-bottom: 50px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    padding: 8px;
    border: 1px solid rgba(0, 212, 255, 0.2);
}

.tab-button {
    background: transparent;
    border: none;
    color: #a0a0a0;
    font-size: 1rem;
    font-weight: 600;
    padding: 15px 30px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.tab-button:hover {
    color: #00d4ff;
    background: rgba(0, 212, 255, 0.1);
}

.tab-button.active {
    color: #00d4ff;
    background: linear-gradient(45deg, rgba(0, 212, 255, 0.2), rgba(124, 58, 237, 0.2));
    border: 1px solid rgba(0, 212, 255, 0.4);
}

.tab-content {
    position: relative;
    min-height: 500px;
}

.tab-panel {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.tab-panel.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.intro-text h3 {
    font-size: 2.5rem;
    color: #00d4ff;
    margin-bottom: 25px;
    font-weight: 700;
}

/* Full-width header for PINN tab */
.pinn-header {
    margin-bottom: 40px;
    text-align: center;
}

.pinn-header h3 {
    font-size: 2.5rem;
    color: #00d4ff;
    margin-bottom: 20px;
    font-weight: 700;
}

.pinn-header p {
    font-size: 1.1rem;
    color: #e0e0e0;
    line-height: 1.8;
    max-width: 900px;
    margin: 0 auto;
}

.intro-text p {
    font-size: 1.1rem;
    color: #e0e0e0;
    line-height: 1.8;
    margin-bottom: 25px;
}

.intro-text strong {
    color: #00d4ff;
    font-weight: 600;
}

.intro-text em {
    color: #7c3aed;
    font-style: normal;
    font-weight: 600;
}

/* Feature List */
.feature-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin: 25px 0;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    border: 1px solid rgba(0, 212, 255, 0.1);
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(0, 212, 255, 0.3);
    transform: translateX(3px);
}

.feature-icon {
    color: #00d4ff;
    font-size: 1rem;
    margin-top: 2px;
    min-width: 16px;
}

.feature-text {
    color: #e0e0e0;
    line-height: 1.5;
    font-size: 0.95rem;
}

.feature-text strong {
    color: #00d4ff;
    display: block;
    margin-bottom: 3px;
    font-size: 1rem;
}

/* Visual Components */
.intro-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.pinn-diagram {
    display: flex;
    align-items: center;
    gap: 20px;
    background: rgba(255, 255, 255, 0.03);
    padding: 30px;
    border-radius: 15px;
    border: 1px solid rgba(0, 212, 255, 0.2);
}

.diagram-layer {
    text-align: center;
    padding: 20px;
}

.layer-title {
    color: #00d4ff;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.neural-nodes {
    display: flex;
    gap: 5px;
}

.mini-node {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: radial-gradient(circle, #7c3aed, #00d4ff);
    animation: mini-pulse 2s infinite ease-in-out;
}

.mini-node:nth-child(2) { animation-delay: 0.3s; }
.mini-node:nth-child(3) { animation-delay: 0.6s; }

@keyframes mini-pulse {
    0%, 100% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.2); opacity: 1; }
}

.physics-equation {
    font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
    color: #ffa657;
    font-size: 1.2rem;
    font-weight: 600;
}

.pinn-result {
    font-size: 2rem;
    color: #00d4ff;
    animation: result-glow 3s infinite alternate;
}

@keyframes result-glow {
    0% { text-shadow: 0 0 10px rgba(0, 212, 255, 0.5); }
    100% { text-shadow: 0 0 20px rgba(124, 58, 237, 0.8); }
}

.plus-sign, .equals-sign {
    font-size: 1.5rem;
    color: #79c0ff;
    font-weight: bold;
}

/* PINN Benefits */
.pinn-benefits {
    margin-top: 30px;
}

.pinn-benefits h4 {
    color: #00d4ff;
    font-size: 1.2rem;
    margin-bottom: 20px;
    text-align: center;
    font-weight: 600;
}

.benefits-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    border: 1px solid rgba(0, 212, 255, 0.1);
    transition: all 0.3s ease;
}

.benefit-item:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(0, 212, 255, 0.3);
}

.benefit-icon {
    color: #00d4ff;
    font-size: 0.9rem;
}

.benefit-text {
    color: #e0e0e0;
    font-size: 0.9rem;
    font-weight: 500;
}

/* DeCoN Flow */
.decon-flow {
    display: flex;
    flex-direction: column;
    gap: 25px;
    background: rgba(255, 255, 255, 0.03);
    padding: 30px;
    border-radius: 15px;
    border: 1px solid rgba(124, 58, 237, 0.2);
}

.flow-step {
    text-align: center;
    padding: 20px;
    background: rgba(124, 58, 237, 0.1);
    border-radius: 10px;
    border: 1px solid rgba(124, 58, 237, 0.3);
}

.step-icon {
    font-size: 2rem;
    margin-bottom: 10px;
}

.step-title {
    color: #7c3aed;
    font-weight: 600;
    margin-bottom: 5px;
}

.step-desc {
    color: #a0a0a0;
    font-size: 0.9rem;
}

.flow-arrow {
    text-align: center;
    color: #00d4ff;
    font-size: 1.5rem;
    font-weight: bold;
}

/* Breakthrough Highlight */
.breakthrough-highlight {
    display: flex;
    align-items: center;
    gap: 20px;
    background: linear-gradient(45deg, rgba(0, 212, 255, 0.1), rgba(124, 58, 237, 0.1));
    padding: 25px;
    border-radius: 12px;
    border: 1px solid rgba(0, 212, 255, 0.3);
    margin: 30px 0;
}

.breakthrough-icon {
    font-size: 2.5rem;
    color: #00d4ff;
    filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.5));
}

.breakthrough-text {
    color: #e0e0e0;
    line-height: 1.6;
}

.breakthrough-text strong {
    color: #00d4ff;
    display: block;
    margin-bottom: 5px;
    font-size: 1.1rem;
}

/* Applications */
.decon-applications h4 {
    color: #7c3aed;
    font-size: 1.2rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.decon-applications ul {
    list-style: none;
    padding: 0;
}

.decon-applications li {
    color: #e0e0e0;
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
}

.decon-applications li::before {
    content: "◉";
    color: #7c3aed;
    position: absolute;
    left: 0;
}

/* Research Focus */
.research-focus h4 {
    color: #00d4ff;
    font-size: 1.2rem;
    margin-bottom: 20px;
    font-weight: 600;
}

.focus-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.focus-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    border: 1px solid rgba(0, 212, 255, 0.1);
}

.focus-icon {
    color: #00d4ff;
    font-size: 1.1rem;
}

.focus-text {
    color: #e0e0e0;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Author Links */
.author-links h4 {
    color: #00d4ff;
    font-size: 1.3rem;
    margin-bottom: 25px;
    text-align: center;
    font-weight: 600;
}

.link-grid {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.author-link {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 10px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.author-link:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(0, 212, 255, 0.4);
    transform: translateY(-2px);
}

.link-icon {
    color: #00d4ff;
    font-size: 1.2rem;
}

.link-text {
    flex: 1;
}

.link-title {
    color: #00d4ff;
    font-weight: 600;
    margin-bottom: 3px;
}

.link-desc {
    color: #a0a0a0;
    font-size: 0.9rem;
}

/* Responsive Design for Introduction */
@media (max-width: 768px) {
    .intro-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .tab-nav {
        flex-direction: column;
        gap: 5px;
    }
    
    .tab-button {
        padding: 12px 20px;
        font-size: 0.9rem;
    }
    
    .focus-grid {
        grid-template-columns: 1fr;
    }
    
    .pinn-diagram {
        flex-direction: column;
        gap: 15px;
    }
    
    .intro-text h3 {
        font-size: 2rem;
    }
}