```css
/* =========================
   GENERAL
========================= */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background: #0a0a0a;
    color: #ffffff;
    line-height: 1.6;
}


/* =========================
   NAVIGATION
========================= */

.navbar {
    position: fixed;
    top: 0;
    left: 0;

    width: 100%;
    height: 70px;

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

    padding: 0 7%;

    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(10px);

    border-bottom: 1px solid #222;

    z-index: 1000;
}

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

.navbar nav {
    display: flex;
    gap: 30px;
}

.navbar a {
    color: #aaa;
    text-decoration: none;
    font-size: 14px;

    transition: 0.3s;
}

.navbar a:hover {
    color: #fff;
}


/* =========================
   HERO
========================= */

.hero {
    min-height: 100vh;

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

    text-align: center;

    padding: 120px 20px 80px;

    background:
        radial-gradient(
            circle at center,
            #1c1c1c 0%,
            #0a0a0a 55%
        );
}

.hero-content {
    max-width: 850px;
}

.eyebrow {
    font-size: 12px;
    letter-spacing: 4px;
    color: #888;

    margin-bottom: 20px;
}

.hero h1 {
    font-size: clamp(55px, 9vw, 110px);
    line-height: 1;

    margin-bottom: 20px;
}

.subtitle {
    font-size: 20px;
    color: #bbb;

    margin-bottom: 25px;
}

.intro {
    max-width: 600px;
    margin: 0 auto 35px;

    color: #888;
}

.button {
    display: inline-block;

    padding: 13px 28px;

    border: 1px solid #555;
    border-radius: 30px;

    color: white;
    text-decoration: none;

    transition: 0.3s;
}

.button:hover {
    background: white;
    color: black;
}


/* =========================
   SECTIONS
========================= */

.section {
    padding: 120px 7%;
}

.alternate {
    background: #111;
}

.section-container {
    max-width: 1200px;
    margin: auto;
}

.section-label {
    color: #777;
    font-size: 12px;
    letter-spacing: 3px;

    margin-bottom: 15px;
}

.section h2 {
    font-size: clamp(40px, 6vw, 70px);
    line-height: 1.1;

    margin-bottom: 25px;
}

.section-description {
    max-width: 650px;

    color: #888;

    margin-bottom: 50px;
}


/* =========================
   CARDS
========================= */

.cards {
    display: grid;

    grid-template-columns:
        repeat(auto-fit, minmax(230px, 1fr));

    gap: 20px;
}

.card {
    padding: 30px;

    background: #151515;

    border: 1px solid #242424;
    border-radius: 12px;

    transition: 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    border-color: #555;
}

.card h3 {
    margin-bottom: 15px;
}

.card p {
    color: #888;
}

.card-link {
    display: inline-block;

    margin-top: 20px;

    color: white;
    text-decoration: none;
}


/* =========================
   ABOUT
========================= */

.about-grid {
    display: grid;

    grid-template-columns:
        repeat(auto-fit, minmax(280px, 1fr));

    gap: 50px;
}

.about-grid h3 {
    margin-bottom: 15px;
}

.about-grid p {
    color: #888;
}


/* =========================
   FOOTER
========================= */

footer {
    padding: 40px 20px;

    text-align: center;

    border-top: 1px solid #222;

    color: #555;

    font-size: 13px;
}


/* =========================
   MOBILE
========================= */

@media (max-width: 700px) {

    .navbar {
        padding: 0 20px;
    }

    .navbar nav {
        gap: 12px;
    }

    .navbar nav a {
        font-size: 11px;
    }

    .logo {
        font-size: 14px;
    }

    .section {
        padding: 90px 20px;
    }

    .hero {
        padding-left: 20px;
        padding-right: 20px;
    }
}
```