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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background: #080808;
    color: #f5f5f5;
    line-height: 1.6;
}

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


/* NAVBAR */

.navbar {
    height: 75px;
    padding: 0 6%;
    display: flex;
    align-items: center;
    justify-content: space-between;

    position: sticky;
    top: 0;
    z-index: 1000;

    background: rgba(8, 8, 8, 0.85);
    backdrop-filter: blur(15px);

    border-bottom: 1px solid #222;
}

.logo {
    font-weight: 900;
    letter-spacing: 2px;
    font-size: 18px;
}

.logo span {
    color: #a7ff00;
}

.navbar nav {
    display: flex;
    gap: 28px;
}

.navbar nav a {
    font-size: 14px;
    color: #aaa;
    transition: 0.3s;
}

.navbar nav a:hover {
    color: #a7ff00;
}

.nav-button {
    border: 1px solid #a7ff00;
    background: transparent;
    color: #a7ff00;
    padding: 10px 18px;
    border-radius: 5px;
    cursor: pointer;
}


/* HERO */

.hero {
    min-height: 90vh;

    padding: 100px 8%;

    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;

    background:
        radial-gradient(circle at 70% 50%, #172400 0%, transparent 30%),
        #080808;
}

.badge {
    display: inline-block;
    padding: 8px 14px;
    border: 1px solid #333;
    border-radius: 30px;

    font-size: 12px;
    color: #a7ff00;

    margin-bottom: 25px;
}

.hero h1 {
    font-size: clamp(50px, 7vw, 95px);
    line-height: 0.95;
    max-width: 850px;
}

.hero h1 span,
.section-heading h2 span,
.solution-text h3,
.future-section h2 span {
    color: #a7ff00;
}

.hero p {
    max-width: 650px;
    margin-top: 30px;

    color: #999;
    font-size: 18px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    margin-top: 35px;
}

.primary-btn,
.secondary-btn {
    padding: 15px 22px;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
}

.primary-btn {
    background: #a7ff00;
    color: #050505;
    border: none;
}

.secondary-btn {
    border: 1px solid #444;
    color: white;
}


/* HERO VISUAL */

.hero-visual {
    position: relative;
    height: 500px;

    display: flex;
    align-items: center;
    justify-content: center;
}

.main-orb {
    width: 280px;
    height: 280px;

    border-radius: 50%;

    border: 1px solid #4e6900;

    display: flex;
    align-items: center;
    justify-content: center;

    box-shadow:
        0 0 70px rgba(167, 255, 0, 0.12),
        inset 0 0 60px rgba(167, 255, 0, 0.08);
}

.orb-center {
    width: 120px;
    height: 120px;

    border-radius: 50%;

    display: flex;
    align-items: center;
    justify-content: center;

    background: #a7ff00;
    color: #000;

    font-size: 35px;
    font-weight: 900;
}

.floating-card {
    position: absolute;

    display: flex;
    align-items: center;
    gap: 12px;

    padding: 15px 18px;

    background: #111;
    border: 1px solid #333;
    border-radius: 8px;

    box-shadow: 0 15px 50px rgba(0,0,0,.5);
}

.floating-card span {
    font-size: 25px;
}

.floating-card strong,
.floating-card small {
    display: block;
}

.floating-card strong {
    font-size: 13px;
}

.floating-card small {
    color: #777;
    font-size: 11px;
}

.card-one {
    top: 70px;
    left: 10px;
}

.card-two {
    bottom: 80px;
    right: 0;
}


/* STATS */

.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);

    border-top: 1px solid #222;
    border-bottom: 1px solid #222;
}

.stats div {
    padding: 35px;
    text-align: center;
    border-right: 1px solid #222;
}

.stats strong {
    display: block;
    color: #a7ff00;
    font-size: 32px;
}

.stats span {
    color: #777;
    font-size: 13px;
}


/* SECTIONS */

.section {
    padding: 120px 8%;
}

.section-heading {
    max-width: 750px;
    margin-bottom: 60px;
}

.section-heading > span,
.future-section > div > span {
    color: #a7ff00;
    font-size: 12px;
    letter-spacing: 2px;
    font-weight: bold;
}

.section-heading h2 {
    margin-top: 15px;
    font-size: clamp(40px, 5vw, 65px);
    line-height: 1;
}

.section-heading p {
    color: #888;
    margin-top: 25px;
}


/* PROBLEM */

.problem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.problem-card {
    background: #101010;
    border: 1px solid #222;

    padding: 35px;

    transition: .3s;
}

.problem-card:hover {
    border-color: #a7ff00;
    transform: translateY(-5px);
}

.icon {
    font-size: 35px;
    margin-bottom: 20px;
}

.problem-card h3 {
    margin-bottom: 10px;
}

.problem-card p {
    color: #777;
}


/* SOLUTION */

.solution-section {
    background: #0d0d0d;
}

.solution-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 70px;
    align-items: center;
}

.solution-text h3 {
    font-size: 35px;
    margin-bottom: 20px;
}

.solution-text p {
    color: #888;
    margin-bottom: 20px;
}

.solution-text ul {
    list-style: none;
    color: #aaa;
}

.solution-text li {
    margin: 10px 0;
}


/* DIAGRAM */

.solution-diagram {
    min-height: 400px;

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.diagram-node {
    padding: 20px 40px;

    border: 1px solid #444;
    background: #111;

    text-align: center;
}

.diagram-node.highlight {
    border-color: #a7ff00;
    color: #a7ff00;
    box-shadow: 0 0 40px rgba(167,255,0,.1);
}

.line {
    width: 1px;
    height: 50px;
    background: #555;
}

.diagram-row {
    display: flex;
    gap: 10px;
}

.mini-node {
    padding: 15px 20px;
    border: 1px solid #333;
    color: #999;
}


/* FEATURES */

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}

.feature-card {
    min-height: 220px;

    padding: 30px;

    background: #0d0d0d;
    border: 1px solid #222;
}

.feature-card span {
    color: #a7ff00;
    font-size: 12px;
}

.feature-card h3 {
    margin: 25px 0 10px;
}

.feature-card p {
    color: #777;
}


/* DEMO */

.demo-section {
    background: #0d0d0d;
}

.upload-box {
    max-width: 900px;
    margin: auto;

    padding: 60px 30px;

    text-align: center;

    border: 1px dashed #444;
    border-radius: 10px;

    background: #101010;
}

.upload-icon {
    width: 70px;
    height: 70px;

    margin: auto auto 20px;

    display: flex;
    align-items: center;
    justify-content: center;

    border-radius: 50%;

    background: #a7ff00;
    color: #000;

    font-size: 35px;
}

.upload-box p {
    color: #777;
    margin: 10px 0 25px;
}

#fileInput {
    display: none;
}

.upload-button {
    display: inline-block;

    background: #a7ff00;
    color: #000;

    padding: 13px 25px;

    border-radius: 5px;

    cursor: pointer;
    font-weight: bold;
}

.file-list {
    margin-top: 25px;
}

.file-item {
    padding: 12px;

    margin-top: 8px;

    background: #181818;
    border: 1px solid #282828;

    text-align: left;

    font-size: 13px;
}


/* MEDIA PREVIEW */

.media-preview {
    margin-top: 40px;
    padding: 30px;

    min-height: 150px;

    border: 1px solid #222;
    background: #080808;
}

.media-preview h3 {
    margin-bottom: 10px;
}

.media-preview p {
    color: #666;
}


/* TECHNOLOGY */

.tech-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.tech-item {
    padding: 30px;

    text-align: center;

    border: 1px solid #292929;
    background: #101010;

    font-weight: bold;

    transition: .3s;
}

.tech-item:hover {
    border-color: #a7ff00;
    color: #a7ff00;
}


/* FUTURE */

.future-section {
    padding: 120px 8%;

    background:
        linear-gradient(90deg, #101500, #080808);

    border-top: 1px solid #222;
}

.future-section h2 {
    font-size: clamp(45px, 6vw, 80px);
    line-height: 1;
    max-width: 800px;

    margin: 20px 0;
}

.future-section p {
    max-width: 650px;
    color: #888;
}


/* FOOTER */

footer {
    padding: 60px 8%;

    border-top: 1px solid #222;

    text-align: center;
}

.footer-logo {
    font-weight: 900;
    letter-spacing: 3px;
}

footer p {
    color: #666;
    margin-top: 10px;
}

footer .copyright {
    font-size: 12px;
}


/* MOBILE */

@media (max-width: 900px) {

    .navbar nav {
        display: none;
    }

    .hero {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero p {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-visual {
        height: 400px;
    }

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

    .problem-grid,
    .features-grid,
    .solution-container {
        grid-template-columns: 1fr;
    }

    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}


@media (max-width: 500px) {

    .hero {
        padding: 80px 5%;
    }

    .section {
        padding: 80px 5%;
    }

    .stats div {
        padding: 25px 10px;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .hero-visual {
        transform: scale(.8);
    }

    .tech-grid {
        grid-template-columns: 1fr;
    }
}
```