:root {
    --primary: #0ea5e9;
    --primary-dark: #0284c7;
    --secondary: #10b981;
    --accent: #06b6d4;
    --bg-dark: #1a1f2e;
    --bg-card: #242b3d;
    --bg-card-hover: #2d3548;
    --text-primary: #f0f9ff;
    --text-secondary: #cbd5e1;
    --border: #3b4558;
    --success: #10b981;
    --warning: #f59e0b;
    --youtube-red: #ff0000;
}

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

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #1a1f2e 0%, #243447 50%, #1a1f2e 100%);
    color: var(--text-primary);
    line-height: 1.7;
    position: relative;
    min-height: 100vh;
}

/* Global ASCII Art Background */
.ascii-doodles-global {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.ascii-doodles-global .ascii-art {
    position: absolute;
    font-size: 2.5rem;
    opacity: 0.12;
    user-select: none;
}

.ascii-doodles-global .drone1 {
    top: 10%;
    left: 15%;
    animation: floatDrone1 15s ease-in-out infinite;
}

.ascii-doodles-global .bird1 {
    top: 25%;
    right: 10%;
    animation: floatBird1 13s ease-in-out infinite;
}

.ascii-doodles-global .drone2 {
    top: 45%;
    left: 8%;
    animation: floatDrone2 17s ease-in-out infinite;
}

.ascii-doodles-global .ufo1 {
    bottom: 30%;
    right: 15%;
    animation: floatUFO 12s ease-in-out infinite;
}

.ascii-doodles-global .bird2 {
    top: 60%;
    right: 25%;
    animation: floatBird2 11s ease-in-out infinite;
}

.ascii-doodles-global .drone3 {
    bottom: 20%;
    left: 20%;
    animation: floatDrone3 18s ease-in-out infinite;
}

.ascii-doodles-global .satellite1 {
    top: 35%;
    right: 40%;
    animation: floatSatellite 19s ease-in-out infinite;
}

.ascii-doodles-global .rocket1 {
    bottom: 40%;
    left: 45%;
    animation: floatRocket 15s ease-in-out infinite;
}

.ascii-doodles-global .drone4 {
    top: 70%;
    left: 35%;
    animation: floatDrone4 18s ease-in-out infinite;
}

.ascii-doodles-global .bird3 {
    bottom: 50%;
    right: 5%;
    animation: floatBird3 21s ease-in-out infinite;
}


@keyframes floatDrone1 {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(-40px, 20px) rotate(-10deg); }
}

@keyframes floatBird1 {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(35px, -40px) rotate(15deg); }
}

@keyframes floatDrone2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-25px, 25px) scale(1.15); }
}

@keyframes floatBird2 {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(30px, -20px); }
}

@keyframes floatUFO {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(35px, -40px) rotate(15deg); }
}

@keyframes floatBird3 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-25px, 25px) scale(1.15); }
}

@keyframes floatSatellite {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(-40px, 20px) rotate(-10deg); }
}

@keyframes floatRocket {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(35px, -40px) rotate(15deg); }
}

@keyframes floatDrone4 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-25px, 25px) scale(1.15); }
}

@keyframes floatBird3 {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(30px, -20px); }
}

nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(26, 31, 46, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    padding: 1rem 2rem;
}

nav .container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 1001;
}

nav .logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

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

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 6rem 2rem 4rem;
    background: transparent;
    position: relative;
    overflow: hidden;
}

/* ASCII Art Doodles */
.ascii-doodles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.ascii-art {
    position: absolute;
    font-size: 3rem;
    opacity: 0.15;
    user-select: none;
}

.ascii-art.drone1 {
    top: 10%;
    left: 15%;
}

.ascii-art.bird1 {
    top: 20%;
    right: 10%;
}

.ascii-art.drone2 {
    top: 60%;
    left: 8%;
}

.ascii-art.ufo1 {
    bottom: 25%;
    right: 15%;
}

.ascii-art.bird2 {
    top: 45%;
    right: 20%;
}

.ascii-art.drone3 {
    bottom: 15%;
    left: 20%;
}

.hero::before {
    display: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.hero .subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--primary);
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 3rem;
}

.stat {
    text-align: center;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* GitHub Button */
.github-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 2rem;
    padding: 0.875rem 1.75rem;
    background: #24292e;
    color: #fff;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    border: 1px solid #444;
    transition: all 0.3s ease;
}

.github-btn:hover {
    background: #333;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.github-btn i {
    font-size: 1.25rem;
}

section {
    padding: 5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 2px;
}

.section-header p {
    color: var(--text-secondary);
    max-width: 600px;
    margin: 1.5rem auto 0;
}

.card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

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

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.card p {
    color: var(--text-secondary);
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.challenge-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.challenge-icon.orange {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}

.challenge-icon.blue {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
}

.challenge-icon.purple {
    background: linear-gradient(135deg, #8b5cf6, #6d28d9);
}

.methodology-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.method-card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 2.5rem;
    border: 1px solid var(--border);
}

.method-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.method-card h3 i {
    color: var(--primary);
}

.method-card h4 {
    color: var(--secondary);
    margin: 1.5rem 0 0.75rem;
    font-size: 1.1rem;
}

.method-card ul {
    list-style: none;
    padding-left: 0;
}

.method-card li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
}

.method-card li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary);
}

.highlight-box {
    background: rgba(14, 165, 233, 0.1);
    border-left: 4px solid var(--primary);
    padding: 1rem 1.5rem;
    margin-top: 1.5rem;
    border-radius: 0 8px 8px 0;
}

.highlight-box p {
    color: var(--text-primary);
    font-size: 0.95rem;
}

.pipeline {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin: 1.5rem 0;
    flex-wrap: wrap;
}

.pipeline-step {
    background: var(--bg-card-hover);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--secondary);
}

.pipeline-arrow {
    color: var(--primary);
}

.results-table {
    overflow-x: auto;
    margin: 2rem 0;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
}

th, td {
    padding: 1rem 1.5rem;
    text-align: left;
}

th {
    background: var(--bg-card-hover);
    font-weight: 600;
    color: var(--text-primary);
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 1px;
}

td {
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background: rgba(14, 165, 233, 0.05);
}

tr.highlight td {
    background: rgba(14, 165, 233, 0.1);
    color: var(--text-primary);
    font-weight: 600;
}

.metric-good {
    color: var(--success);
    font-weight: 600;
}

.video-section {
    background: var(--bg-dark);
    padding: 5rem 0;
}

.video-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 0.75rem 2rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.3s;
}

.tab-btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
}

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

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(450px, 1fr));
    gap: 1.5rem;
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 2rem;
}

.video-card {
    background: transparent;
    border-radius: 12px;
    overflow: visible;
    cursor: pointer;
    transition: none;
}

.video-card:hover .video-title {
    color: var(--primary);
}

/* YouTube-style player */
.youtube-player {
    position: relative;
    width: 100%;
    border-radius: 12px;
    overflow: hidden;
    background: #000;
    margin-bottom: 12px;
}

.youtube-player video {
    width: 100%;
    display: block;
    aspect-ratio: 16 / 9;
    background: #000;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.3);
    transition: opacity 0.3s;
    cursor: pointer;
}

.play-button {
    width: 68px;
    height: 48px;
    transition: transform 0.2s;
}

.youtube-player:hover .play-button {
    transform: scale(1.2);
}

.play-button svg {
    filter: drop-shadow(0 0 10px rgba(0, 0, 0, 0.5));
}

.video-controls {
    position: absolute;
    bottom: 10px;
    right: 10px;
    z-index: 10;
    opacity: 0;
    transition: opacity 0.3s;
}

.youtube-player:hover .video-controls {
    opacity: 1;
}

.fullscreen-btn {
    background: rgba(0, 0, 0, 0.7);
    border: none;
    color: white;
    padding: 8px;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.fullscreen-btn:hover {
    background: rgba(14, 165, 233, 0.9);
    transform: scale(1.1);
}

.video-info {
    padding: 0;
}

.video-title {
    font-weight: 500;
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.2s;
}

.video-metadata {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.875rem;
}

.video-type {
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.video-format {
    color: var(--text-secondary);
    padding: 2px 8px;
    background: var(--bg-card);
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
}

.video-card .video-title {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

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

.video-type.drone {
    color: var(--success);
}

.video-type.bird {
    color: var(--warning);
}

/* ========================================
   Conclusion Section
   ======================================== */
.conclusion {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(34, 211, 238, 0.1));
    border-radius: 24px;
    padding: 4rem;
    text-align: center;
    border: 1px solid var(--border);
}

.conclusion h2 {
    margin-bottom: 1.5rem;
}

.conclusion p {
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto 2rem;
    font-size: 1.1rem;
}

.key-achievements {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.achievement {
    text-align: center;
}

.achievement-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 2rem;
}

.achievement h4 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.achievement p {
    font-size: 0.9rem;
    margin: 0;
}

/* ========================================
   References Section
   ======================================== */
.references-section {
    background: var(--bg-dark);
    padding: 5rem 2rem;
}

.references-container {
    max-width: 1000px;
    margin: 0 auto;
}

.reference-item {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 1.5rem 2rem;
    margin-bottom: 1rem;
    border: 1px solid var(--border);
    transition: all 0.3s;
}

.reference-item:hover {
    border-color: var(--primary);
    transform: translateX(5px);
}

.reference-number {
    display: inline-block;
    background: var(--primary);
    color: white;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    text-align: center;
    line-height: 28px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-right: 1rem;
    flex-shrink: 0;
}

.reference-content {
    flex: 1;
}

.reference-title {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.05rem;
    margin-bottom: 0.5rem;
    display: block;
    text-decoration: none;
    transition: color 0.3s;
}

.reference-title:hover {
    color: var(--secondary);
}

.reference-authors {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}

.reference-venue {
    color: var(--primary);
    font-size: 0.85rem;
    font-style: italic;
}

.reference-year {
    color: var(--secondary);
    font-weight: 600;
}

.cite-tag {
    display: inline-block;
    background: rgba(99, 102, 241, 0.2);
    color: var(--primary);
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    margin-left: 0.5rem;
    cursor: pointer;
    transition: all 0.3s;
}

.cite-tag:hover {
    background: var(--primary);
    color: white;
}

/* ========================================
   Footer
   ======================================== */
footer {
    background: var(--bg-card);
    padding: 3rem 2rem;
    text-align: center;
    border-top: 1px solid var(--border);
}

footer p {
    color: var(--text-secondary);
}

footer .team {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.footer-links {
    margin-bottom: 1.5rem;
}

.footer-links a {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    transition: all 0.3s ease;
}

.footer-links a:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
    color: var(--secondary);
}

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

/* ========================================
   Animations
   ======================================== */
/* ========================================
   Scroll to Top Button
   ======================================== */
.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 1000;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    background: var(--primary-dark);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 900px) {
    .methodology-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }

    nav ul {
        display: none;
    }

    .conclusion {
        padding: 2rem;
    }

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

/* ========================================
   Pipeline Section
   ======================================== */
.pipeline-section {
    padding: 5rem 2rem;
    background: linear-gradient(180deg, rgba(99, 102, 241, 0.05) 0%, transparent 100%);
}

.pipeline-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    gap: 60px;
}

.pipeline-phase-title {
    color: var(--secondary);
    border-bottom: 2px solid var(--border);
    padding-bottom: 10px;
    margin-bottom: 30px;
    font-size: 1.3rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.pipeline-phase-title.inference {
    color: var(--success);
    border-color: var(--success);
}

/* Training Flow */
.training-flow {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    position: relative;
    align-items: start;
}

.step-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    position: relative;
    min-height: 200px;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s, border-color 0.3s;
}

.step-card:hover {
    border-color: var(--secondary);
}

.step-badge {
    background: #c084fc;
    color: #000;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    width: fit-content;
    margin-bottom: 10px;
}

.step-badge.init {
    background: #fbbf24;
}

.step-badge.feature {
    background: #f472b6;
}

.step-title {
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.step-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.step-desc strong {
    color: var(--text-primary);
}

.arrow-right {
    position: absolute;
    top: 50%;
    right: -25px;
    color: var(--text-secondary);
    font-size: 20px;
    transform: translateY(-50%);
    z-index: 10;
}

/* Inference Flow */
.inference-flow {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.03);
    padding: 30px;
    border-radius: 16px;
    border: 1px dashed var(--border);
    flex-wrap: wrap;
    gap: 15px;
}

.inf-node {
    text-align: center;
    position: relative;
    flex: 1;
    min-width: 100px;
}

.inf-box {
    background: var(--bg-card);
    border: 1px solid var(--success);
    padding: 15px 20px;
    border-radius: 8px;
    display: inline-block;
    font-weight: 600;
    min-width: 120px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s;
}

.inf-box:hover {
    transform: scale(1.05);
}

.inf-box.input {
    border-color: var(--text-primary);
}

.inf-box.result {
    background: var(--success);
    color: #000;
}

.inf-label {
    margin-top: 10px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.inf-arrow {
    color: var(--success);
    font-size: 24px;
}

/* Multiscale Grid Graphic */
.multiscale-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    width: 40px;
    height: 30px;
    border: 2px solid var(--text-secondary);
    margin: 0 auto 5px;
    position: relative;
}

.multiscale-grid div {
    border: 1px dotted #555;
}

.center-crop {
    position: absolute;
    width: 20px;
    height: 15px;
    border: 2px solid var(--secondary);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(34, 211, 238, 0.2);
}

/* Responsive Pipeline */
@media (max-width: 900px) {
    .training-flow {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .arrow-right {
        top: auto;
        bottom: -30px;
        right: 50%;
        transform: translateX(50%) rotate(90deg);
    }

    .inference-flow {
        flex-direction: column;
        gap: 30px;
    }

    .inf-arrow {
        transform: rotate(90deg);
    }
    
    .video-grid {
        grid-template-columns: 1fr;
    }
}