/* Global Styles & Variables */
:root {
    --primary-color: #0d1e37; /* Dark Navy for text and specific sections */
    --accent-color: #00ff66;  /* Neon Green */
    --bg-dark: #09131e;       /* Very dark background for tech sections */
    --text-main: #333333;
    --text-light: #ffffff;
    --font-heading: 'Pretendard Variable', -apple-system, BlinkMacSystemFont, system-ui, Roboto, 'Helvetica Neue', 'Segoe UI', 'Apple SD Gothic Neo', 'Noto Sans KR', 'Malgun Gothic', 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', sans-serif;
}

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

body {
    font-family: var(--font-heading);
    color: var(--text-main);
    line-height: 1.6;
    background-color: #ffffff;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* Header & Nav */
.main-header {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: 20px 0;
    background: transparent;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 40px;
}

.logo a {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-light);
    letter-spacing: -0.5px;
}

.main-nav ul {
    display: flex;
    gap: 30px;
}

.main-nav a {
    color: var(--text-light);
    font-size: 15px;
    font-weight: 500;
    opacity: 0.9;
    transition: opacity 0.3s;
}

.main-nav a:hover {
    opacity: 1;
}

/* Hero Section */
#hero {
    position: relative;
    height: 70vh; /* Adjust based on look */
    min-height: 500px;
    display: flex;
    align-items: center;
    padding-left: 10%;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-bg img,
.hero-bg video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 30%;
}

.hero-bg .overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.2) 100%);
}

.hero-content {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 0 40px;
}

.hero-title {
    color: var(--text-light);
    font-size: 42px;
    font-weight: 300;
    line-height: 1.4;
    letter-spacing: -1px;
}

.hero-title strong {
    font-weight: 700;
}

/* Price Section */
#price-stats {
    background-color: #ffffff;
    padding: 40px 0;
    text-align: center;
    border-bottom: 1px solid #eeeeee;
}

.stats-container {
    display: flex;
    justify-content: center;
    gap: 80px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
}

.stat-label {
    font-size: 18px;
    font-weight: 700;
    color: #000;
}

.stat-number {
    font-size: 24px;
    font-weight: 700;
    color: #444;
}

/* Machine Section */
#machine-section {
    width: 100%;
    background-color: #0b152d; /* Dark bluish theme from original poster */
    padding: 60px 0;
    position: relative;
    overflow: hidden;
}

.machine-slider-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.machine-image-container {
    position: relative;
    width: 80%;
    max-width: 900px;
    height: 400px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.machine-image-container img,
.machine-image-container video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.7) contrast(1.1);
}

.machine-text-overlay {
    position: absolute;
    top: 40px;
    left: 60px;
    color: #fff;
}

.machine-text-overlay h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 5px;
    opacity: 0.9;
    letter-spacing: 1px;
}

.machine-text-overlay p {
    font-size: 20px;
    font-weight: 300;
    color: #acc1de;
}

.nav-arrow {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: absolute;
    z-index: 10;
    transition: background-color 0.3s;
}

.nav-arrow:hover {
    background-color: #fff;
}

.left-arrow { left: 5%; }
.right-arrow { right: 5%; }

/* Comparison Circles */
#comparison-circles {
    background-color: #ffffff;
    padding: 80px 0;
}

.circles-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 30px;
}

.circle-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.outer-circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.dark-circle {
    background-color: #12182b;
}

.active-circle {
    background-color: #ffffff;
    border: 4px solid #14213d; /* Dark navy border */
    box-shadow: 0 0 30px rgba(10, 232, 90, 0.3); /* Neon glow effect */
}

/* Inner elements of dark circles */
.inner-icon {
    width: 60px;
    height: 60px;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.dot {
    width: 20px;
    height: 20px;
    border-radius: 50%;
}

.icon-red { background-color: #ff4848; }
.icon-blue { background-color: #48a2ff; }

/* Active Target Icon */
.active-circle .inner-icon {
    border: 2px solid var(--accent-color);
}

.target-icon {
    width: 20px;
    height: 20px;
    background-color: var(--accent-color);
    border-radius: 50%;
    position: relative;
}

.target-icon::before,
.target-icon::after {
    content: '';
    position: absolute;
    background-color: var(--accent-color);
}
.target-icon::before { width: 40px; height: 2px; top: 9px; left: -10px; }
.target-icon::after { height: 40px; width: 2px; left: 9px; top: -10px; }

.circle-text {
    font-size: 16px;
    font-weight: 500;
    color: #12182b;
    text-align: center;
}

.active-text {
    font-weight: 700;
    color: rgb(12, 115, 250); /* Blue highlighting */
}

.connector-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-bottom: 40px; /* Aligns with middle of circles */
}

/* Eye Scan Feature Section */
#eye-scan-features {
    background-color: #1a1a1a;
    width: 100%;
}

.eye-scan-bg {
    position: relative;
    width: 100%;
    height: 500px;
    overflow: hidden;
    display: flex;
    justify-content: flex-end; /* Text aligned to right generally */
    align-items: center;
}

.eye-scan-bg .bg-img {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    opacity: 0.4;
    z-index: 1;
}

.dark-gradient-overlay {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: linear-gradient(to right, rgba(26,26,26,0.2) 0%, #1a1a1a 80%);
    z-index: 2;
}

/* Simulated scanner rings */
.scan-overlay-circle {
    position: absolute;
    top: 50%; left: 30%;
    transform: translate(-50%, -50%);
    z-index: 3;
    width: 400px; height: 400px;
}

.scan-ring {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    border: 1px dashed rgba(255, 170, 0, 0.5); /* Orange scanner vibe */
}

.outer-ring { width: 350px; height: 350px; border: 2px solid rgba(255, 170, 0, 0.3); }
.middle-ring { width: 250px; height: 250px; border: 1px solid rgba(255, 170, 0, 0.6); }
.inner-ring { width: 150px; height: 150px; border: 2px solid rgba(255, 170, 0, 0.8); }

.scan-crosshair {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 20px; height: 20px;
}
.scan-crosshair::before, .scan-crosshair::after {
    content: ''; position: absolute; background-color: #ff0000;
}
.scan-crosshair::before { width: 40px; height: 2px; top: 9px; left: -10px; }
.scan-crosshair::after { height: 40px; width: 2px; top: -10px; left: 9px; }

.scan-text-content {
    position: relative;
    z-index: 4;
    padding-right: 10%;
    text-align: right;
    color: #fff;
}

.scan-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 10px;
}

.scan-subtitle {
    font-size: 18px;
    color: #aaaaaa;
}

/* Feature Grid under the scan */
.features-grid-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background-color: #1a1a1a;
}

.feature-card {
    padding: 60px 30px;
    text-align: center;
    border-right: 1px solid #333;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
    cursor: pointer;
}

.feature-card:last-child {
    border-right: none;
}

.feature-icon {
    font-size: 40px;
    margin-bottom: 20px;
    opacity: 0.6;
    transition: opacity 0.3s;
}

.feature-card h3 {
    color: #ffffff;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 15px;
}

.feature-card p {
    color: #888888;
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 30px;
    min-height: 45px;
}

.feature-btn {
    display: inline-block;
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s;
}

.feature-card:hover, .active-card {
    background-color: #222222;
    border-bottom: 3px solid var(--accent-color);
}

.feature-card:hover .feature-icon, .active-card .feature-icon {
    opacity: 1;
}

.feature-card:hover h3, .active-card h3 {
    color: var(--accent-color);
}

.feature-card:hover .feature-btn, .active-card .feature-btn {
    opacity: 1;
    transform: translateY(0);
}

/* Laser Spot Comparison Section */
#laser-spot-comparison {
    padding: 80px 0;
    background-color: #f7f7f7; /* Adjusted to match the specific off-white of the images */
}

.comparison-row {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    gap: 0;
}

.diagram-box {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.diagram-content {
    width: 100%;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f7f7f7; /* Match the background */
}

.comparison-img {
    width: 100%;
    height: auto;
    display: block; /* Removing inline bottom gap */
    object-fit: contain;
}

.diagram-label {
    padding: 12px 40px;
    border-radius: 30px;
    font-size: 18px;
    font-weight: 700;
    text-align: center;
    min-width: 200px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.btn-blue {
    background: linear-gradient(135deg, #1e90ff, #2575fc);
    color: #ffffff;
}

.btn-dark {
    background: linear-gradient(135deg, #444, #1a1a1a);
    color: #ffffff;
}

/* CenTrax Section */
#centrax-section {
    background-color: #1a1a1a;
    padding: 80px 0;
    color: #ffffff;
}

.centrax-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 60px;
}

.centrax-circle {
    width: 250px;
    height: 250px;
    border: 3px solid var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 30px;
    box-shadow: 0 0 40px rgba(10, 232, 90, 0.2), inset 0 0 40px rgba(10, 232, 90, 0.2);
}

.centrax-circle h2 {
    font-size: 40px;
    font-weight: 800;
    color: #ffffff;
    text-shadow: 0 0 10px rgba(255,255,255,0.5), 0 0 20px var(--accent-color);
    letter-spacing: 1px;
}

.centrax-subtitle {
    text-align: center;
    line-height: 1.8;
}

.centrax-subtitle strong {
    font-size: 24px;
    color: var(--accent-color);
    display: block;
    margin-bottom: 10px;
}

.centrax-subtitle span {
    font-size: 16px;
    color: #aaaaaa;
}

/* CenTrax Rows */
.centrax-features {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.centrax-row {
    display: flex;
    background-color: #222222;
    border-radius: 8px;
    overflow: hidden;
    height: 180px;
}

.centrax-img-box {
    width: 45%;
    position: relative;
    overflow: hidden;
    background-color: #111;
}

.centrax-img-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.6;
}

.tech-overlay {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tech-target {
    width: 80px; height: 80px;
    border: 2px solid #ff3b30;
    border-radius: 50%;
    position: relative;
}
.tech-target::before, .tech-target::after {
    content: ''; position: absolute; background: #ff3b30;
}
.tech-target::before { width: 10px; height: 2px; top: 39px; left: -5px; }
.tech-target::after { width: 10px; height: 2px; top: 39px; right: -5px; }

.tech-grid {
    width: 100%; height: 100%;
    background-image: 
        linear-gradient(rgba(10, 232, 90, 0.2) 1px, transparent 1px),
        linear-gradient(90deg, rgba(10, 232, 90, 0.2) 1px, transparent 1px);
    background-size: 20px 20px;
}

.split-view {
    display: flex;
    width: 100%; height: 100%;
}
.view-panel {
    flex: 1;
    border-right: 1px solid #333;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
}
.view-panel span {
    position: absolute; top: 10px; left: 10px;
    font-size: 12px; color: #888;
}
.v-line {
    height: 60%; width: 2px;
    background-color: var(--accent-color);
    position: relative;
    left: -10px;
}
.v-line.centered {
    left: 0;
}

.centrax-text-box {
    width: 55%;
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.centrax-text-box h4 {
    color: var(--accent-color);
    font-size: 18px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.centrax-text-box h4::before {
    content: '';
    display: inline-block;
    width: 6px; height: 6px;
    background-color: var(--accent-color);
    border-radius: 50%;
}

.centrax-text-box p {
    color: #cccccc;
    font-size: 15px;
    line-height: 1.6;
}

/* Comparison Table Section */
#comparison-table-section {
    padding: 80px 0;
    background-color: #f9f9f9;
}

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

.section-title {
    font-size: 32px;
    font-weight: 300;
    color: #333;
    margin-bottom: 10px;
}

.section-title strong {
    font-weight: 700;
}

.section-desc {
    font-size: 16px;
    color: #666;
    margin-bottom: 40px;
}

.table-wrapper {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    overflow: hidden;
    margin-bottom: 40px;
}

.smart-table {
    width: 100%;
    border-collapse: collapse;
    background-color: #ffffff;
}

.smart-table th, .smart-table td {
    padding: 20px;
    text-align: center;
    border-bottom: 1px solid #eee;
    vertical-align: middle;
}

.smart-table thead th {
    background-color: #f2f5f8;
    color: #333;
    font-size: 15px;
    font-weight: 600;
    padding: 25px 20px;
}

.smart-table thead th.highlight-col {
    background-color: var(--primary-color);
    color: #ffffff;
}

.smart-table tbody tr:last-child td {
    border-bottom: none;
}

/* Column Widths */
.col-category { width: 34%; }
.col-smart { width: 33%; }
.col-general { width: 33%; }

.icon-td {
    color: #555;
    font-weight: 500;
    font-size: 14px;
    background-color: #fdfdfd;
}

.table-icon {
    display: inline-block;
    font-size: 24px;
    margin-bottom: 5px;
}

.smart-table td {
    font-size: 16px;
    font-weight: 500;
    color: #555;
}

.highlight-td {
    background-color: rgba(13, 30, 55, 0.03); /* slight navy tint */
    color: var(--primary-color) !important;
    font-weight: 700 !important;
}

.table-action {
    display: flex;
    justify-content: center;
}

.view-more-btn {
    display: inline-block;
    padding: 12px 40px;
    background-color: transparent;
    border: 1px solid #ccc;
    color: #555;
    border-radius: 30px;
    font-size: 15px;
    font-weight: 500;
    transition: all 0.3s;
}

.view-more-btn:hover {
    background-color: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

/* Doctor Profile Section */
#doctor-profile {
    position: relative;
    width: 100%;
    height: auto;
    min-height: 50vh;
    background-color: #000;
    overflow: hidden;
}

#doctor-profile .profile-bg {
    width: 100%;
    height: auto;
    display: flex;
    justify-content: center;
    align-items: center;
}

#doctor-profile img {
    width: 100%;
    height: auto;
    display: block;
}

.profile-overlay {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: linear-gradient(to right, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.2) 100%);
}

.profile-text {
    position: absolute;
    top: 50%;
    right: 15%; /* Text is on the right in the image overlay */
    transform: translateY(-50%);
    text-align: right;
    color: #fff;
    z-index: 10;
}

.profile-text h2 {
    font-size: 38px;
    font-weight: 700;
    line-height: 1.4;
    letter-spacing: -1px;
    text-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

/* Gallery & Reviews */
#gallery-reviews {
    padding: 60px 0 100px;
    background-color: #ffffff;
}

.thumbnails-container {
    max-width: 1000px;
    margin: 0 auto 40px;
    display: flex;
    justify-content: center;
    gap: 20px;
}

.thumbnail {
    flex: 1;
    height: 220px;
    overflow: hidden;
    border-radius: 4px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.thumbnail:hover img {
    transform: scale(1.05);
}

.reviews-action {
    text-align: center;
}

.btn-reviews {
    display: inline-block;
    padding: 12px 70px;
    background-color: #e6e6e6;
    color: #333;
    font-size: 16px;
    font-weight: 700;
    border-radius: 30px;
    transition: background-color 0.3s;
}

.btn-reviews:hover {
    background-color: #d4d4d4;
}

/* Responsive Design */
@media screen and (max-width: 768px) {
    .header-container { flex-direction: column; gap: 15px; padding: 0 20px; }
    .main-nav ul { flex-wrap: wrap; justify-content: center; gap: 15px; }

    .hero-title { font-size: 28px; padding: 0 20px; }
    .stats-container { gap: 30px; flex-direction: column; }

    .machine-image-container { width: 100%; height: 250px; }
    .machine-text-overlay { top: 20px; left: 20px; }
    .machine-text-overlay h2 { font-size: 24px; }
    .machine-text-overlay p { font-size: 16px; }

    .circles-wrapper { flex-direction: column; gap: 10px; }
    .connector-arrow { transform: rotate(90deg); padding-bottom: 0; padding-right: 0; padding-left: 20px; height: 40px; }
    
    .scan-title { font-size: 24px; }
    .scan-subtitle { font-size: 14px; }
    .features-grid-container { grid-template-columns: 1fr; }
    .feature-card { border-right: none; border-bottom: 1px solid #333; }
    
    .comparison-row { flex-direction: column; align-items: center; }
    .diagram-box { width: 90%; }
    
    .centrax-circle { width: 200px; height: 200px; }
    .centrax-circle h2 { font-size: 32px; }
    .centrax-row { flex-direction: column; height: auto; margin: 0 20px; }
    .centrax-img-box { width: 100%; height: 200px; }
    .centrax-text-box { width: 100%; padding: 30px 20px; }

    .smart-table { font-size: 14px; }
    .smart-table th, .smart-table td { padding: 10px; }
    .table-icon { font-size: 18px; }
    .table-wrapper { margin: 0 10px 40px; }

    .profile-text { right: 5%; left: 5%; text-align: center; }
    .profile-text h2 { font-size: 28px; }
.thumbnails-container { flex-direction: column; padding: 0 20px; }
}

/* Vertical Scroll Driven Section */
#vertical-scroll-feature {
height: 400vh; /* Giving enough vertical space for scrolling content */
background-color: #000;
position: relative;
z-index: 5;
}

#vertical-scroll-feature .sticky-container {
position: sticky;
top: 0;
height: 100vh;
width: 100%;
overflow: hidden;
}

.scroll-bg {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
z-index: 1;
}

.scroll-bg .bg-img {
width: 100%;
height: 100%;
object-fit: cover;
filter: brightness(0.6);
transition: transform 0.5s ease;
}

.scroll-overlay {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
background: radial-gradient(circle at 50% 50%, rgba(0,0,0,0.2) 0%, rgba(0,0,0,0.7) 100%);
z-index: 2;
}

.scroll-content-wrapper {
position: relative;
z-index: 3;
height: 100%;
display: flex;
justify-content: center;
align-items: center;
}

.scroll-step {
position: absolute;
width: 100%;
max-width: 800px;
padding: 0 40px;
text-align: center;
color: #fff;
opacity: 0;
transform: translateY(30px);
transition: all 0.8s cubic-bezier(0.2, 1, 0.3, 1);
pointer-events: none;
}

.scroll-step.active {
opacity: 1;
transform: translateY(0);
pointer-events: auto;
}

.step-title {
font-size: clamp(32px, 5vw, 64px);
font-weight: 800;
margin-bottom: 24px;
line-height: 1.2;
text-shadow: 0 4px 20px rgba(0,0,0,0.5);
}

.step-desc {
font-size: clamp(18px, 2vw, 24px);
font-weight: 400;
color: rgba(255,255,255,0.8);
line-height: 1.6;
}

/* Video Vertical Scroll Driven Section */
#video-vertical-scroll {
    height: 400vh;
    background-color: #000;
    position: relative;
    z-index: 5;
}

#video-vertical-scroll .sticky-container {
    position: sticky;
    top: 0;
    height: 100vh;
    width: 100%;
    overflow: hidden;
}

.bg-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.6);
}

.video-scroll-step {
    position: absolute;
    width: 100%;
    max-width: 800px;
    padding: 0 40px;
    text-align: center;
    color: #fff;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.2, 1, 0.3, 1);
    pointer-events: none;
}

.video-scroll-step.active {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

/* Side-by-Side Scroll Section (Frame 152) */
#scroll-feature-side {
    background-color: #000;
    position: relative;
    z-index: 5;
}

.side-container {
    display: flex;
    flex-wrap: wrap;
    position: relative;
    max-width: 1400px;
    margin: 0 auto;
}

.side-sticky-media {
    flex: 1;
    min-width: 50%;
    height: 100vh;
    position: sticky;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.side-img,
.side-video {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.side-scrolling-content {
    flex: 1;
    min-width: 50%;
    padding: 0 5%;
}

.side-step {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    color: #fff;
    opacity: 0.2;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.side-step.active {
    opacity: 1;
    transform: translateY(0);
}

@media screen and (max-width: 1024px) {
    .side-container {
        flex-direction: column;
    }
    .side-sticky-media {
        position: relative;
        height: 50vh;
        width: 100%;
        min-width: 100%;
    }
    .side-scrolling-content {
        width: 100%;
        min-width: 100%;
        padding: 40px 20px;
    }
    .side-step {
        height: auto;
        margin-bottom: 80px;
        opacity: 1;
        transform: none;
        text-align: center;
    }
}

/* Unit Correction Precision Section */
#d-scale-section-container {
    background-color: #1a1a1a;
    padding: 150px 0;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #ffffff;
}

.d-scale-section {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    font-size: clamp(4rem, 15vw, 12rem);
    font-weight: 800;
    line-height: 1.2;
}

.d-scale-section .top-row {
    display: flex;
    align-items: center;
    gap: 3vw;
}

.d-scale-section .label {
    font-size: 0.25em;
    opacity: 0.8;
    font-weight: 700;
}

.number-wrapper {
    position: relative;
    display: inline-flex;
    font-variant-numeric: tabular-nums;
    color: #ffffff;
    transition: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.number-wrapper.glow-final {
    color: #0ea5e9;
    transform: scale(1.1);
    text-shadow: 0 0 20px rgba(14, 165, 233, 0.5), 0 0 50px rgba(14, 165, 233, 0.3);
}

.number-wrapper.glow-final .unit {
    color: #ffffff;
    text-shadow: none;
}

@media screen and (max-width: 768px) {
    #d-scale-section-container { padding: 80px 0; }
    .d-scale-section { font-size: 80px; }
}

/* Holographic NOVA Section */
#nova-interactive-section {
...
    position: relative;
    width: 100%;
    height: 800px;
    background-color: #000000;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    perspective: 1200px;
    z-index: 5;
}

.ambient-bg {
    position: absolute;
    width: 150%;
    height: 150%;
    top: -25%;
    left: -25%;
    background: 
        radial-gradient(ellipse at 30% 70%, rgba(0, 42, 255, 0.2) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 30%, rgba(157, 0, 255, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(0, 240, 255, 0.1) 0%, transparent 60%);
    z-index: 0;
    pointer-events: none;
    animation: flowGalaxy 25s ease-in-out infinite alternate;
}

.beam-container {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
    pointer-events: none;
}

.beam {
    position: absolute;
    height: 2px;
    width: 15vw;
    background: linear-gradient(90deg, transparent, rgba(0, 240, 255, 0.4), rgba(0, 42, 255, 0.8), transparent);
    filter: blur(1px);
    opacity: 0;
    offset-rotate: auto;
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.3);
    animation: weaveBeam var(--duration, 8s) ease-in-out infinite;
    animation-delay: var(--delay, 0s);
}

@keyframes weaveBeam {
    0% { offset-distance: 0%; opacity: 0; }
    20% { opacity: 0.9; }
    80% { opacity: 0.9; }
    100% { offset-distance: 100%; opacity: 0; }
}

@keyframes flowGalaxy {
    0% { transform: translate(0, 0) scale(1) rotate(0deg); }
    50% { transform: translate(5%, -3%) scale(1.1) rotate(2deg); }
    100% { transform: translate(-3%, 5%) scale(1.05) rotate(-2deg); }
}

.nova-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    transform-style: preserve-3d;
    transition: transform 0.15s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    z-index: 10;
}

.focus-ring {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    border: 1px solid rgba(0, 240, 255, 0.15);
    box-shadow: 0 0 15px rgba(0, 42, 255, 0.2), inset 0 0 15px rgba(0, 42, 255, 0.1);
    animation: spinRing 60s linear infinite;
    transform: translateZ(10px);
    z-index: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.focus-ring::after {
    content: '';
    position: absolute;
    width: 85%;
    height: 85%;
    border-radius: 50%;
    border: 1px dashed rgba(0, 240, 255, 0.15);
    animation: spinRingReverse 40s linear infinite;
}

.central-core-glow {
    position: absolute;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle at 50% 50%, rgba(0, 240, 255, 0.4) 0%, rgba(0, 42, 255, 0.2) 30%, transparent 70%);
    filter: blur(20px);
    transform: translateZ(-10px);
    animation: pulseGlow 3s ease-in-out infinite alternate;
    z-index: 1;
}

@keyframes pulseGlow {
    0% { opacity: 0.8; transform: scale(0.9) translateZ(-10px); }
    100% { opacity: 1; transform: scale(1.2) translateZ(-10px); }
}
@keyframes spinRing {
    from { transform: rotate(0deg) translateZ(10px); }
    to { transform: rotate(360deg) translateZ(10px); }
}
@keyframes spinRingReverse {
    from { transform: rotate(360deg); }
    to { transform: rotate(0deg); }
}

.axis-v {
    position: absolute;
    height: 100%;
    width: 1px;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 42, 255, 0.4) 20%, rgba(0, 240, 255, 0.6) 50%, rgba(0, 42, 255, 0.4) 80%, transparent 100%);
    z-index: 2;
    transform: translateZ(5px);
}
.axis-h {
    position: absolute;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, rgba(0, 42, 255, 0.4) 20%, rgba(0, 240, 255, 0.6) 50%, rgba(0, 42, 255, 0.4) 80%, transparent 100%);
    z-index: 2;
    transform: translateZ(5px);
}

.nova-content {
    position: relative;
    text-align: center;
    color: #ffffff;
    transform: translateZ(60px); 
    z-index: 10;
    pointer-events: none;
}

.subtitle-top {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 0.15em;
    margin-bottom: -10px;
    color: #ffffff;
    text-shadow: 0 0 10px rgba(0, 240, 255, 0.4), 0 0 20px rgba(0, 42, 255, 0.8);
    text-transform: uppercase;
}

.title-main {
    font-size: 160px;
    font-weight: 900;
    letter-spacing: -0.01em;
    margin: 0;
    line-height: 1.1;
    color: #ffffff;
    text-shadow: 0 0 20px rgba(0, 240, 255, 0.4), 0 0 50px rgba(0, 42, 255, 0.8), 0 0 100px rgba(0, 42, 255, 0.4);
    position: relative;
}

.title-main::before {
    content: "NOVA";
    position: absolute;
    left: 0;
    top: 0;
    z-index: -1;
    color: transparent;
    text-shadow: 0 0 60px #00f0ff, 0 0 120px #002aff; 
    opacity: 0.7;
    transform: scale(1.02);
    filter: blur(8px);
}

.subtitle-bottom {
    font-size: 32px;
    font-weight: 600;
    margin-top: 20px;
    letter-spacing: 0.02em;
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 0 0 10px rgba(0, 240, 255, 0.4);
}

.nova-spotlight {
    position: absolute;
    width: 30vw;
    height: 30vw;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 240, 255, 0.15) 0%, rgba(0, 42, 255, 0.05) 30%, transparent 60%);
    filter: blur(40px);
    pointer-events: none;
    z-index: 20; 
    transform: translate(-50%, -50%); 
    mix-blend-mode: screen;
    opacity: 0;
    transition: opacity 0.5s ease;
}

#nova-interactive-section:hover .nova-spotlight {
    opacity: 1;
}

@media screen and (max-width: 768px) {
    #nova-interactive-section { height: 500px; }
    .focus-ring { width: 300px; height: 300px; }
    .title-main { font-size: 80px; }
    .subtitle-top { font-size: 14px; }
    .subtitle-bottom { font-size: 18px; }
}