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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background: #0b0d12;
    color: #ffffff;
    line-height: 1.6;
}


/* NAVBAR */

.navbar {
    width: 100%;
    height: 80px;

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

    padding: 0 7%;

    border-bottom: 1px solid #1d2028;
    background: rgba(11, 13, 18, 0.95);
}

.logo {
    color: #ffffff;
    text-decoration: none;

    font-size: 26px;
    font-weight: 800;
}

.navbar nav {
    display: flex;
    gap: 35px;
}

.navbar nav a {
    color: #a9adb8;
    text-decoration: none;

    font-size: 15px;

    transition: 0.2s;
}

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

.login-button {
    border: 1px solid #30343e;
    background: transparent;
    color: #ffffff;

    padding: 10px 18px;
    border-radius: 10px;

    cursor: pointer;

    transition: 0.2s;
}

.login-button:hover {
    background: #ffffff;
    color: #0b0d12;
}


/* HERO */

.hero {
    min-height: 650px;

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

    text-align: center;

    padding: 80px 20px;

    background:
        radial-gradient(
            circle at 50% 40%,
            #20294a 0%,
            #111522 35%,
            #0b0d12 70%
        );
}

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

.small-title {
    color: #8ea2ff;

    font-size: 13px;
    font-weight: 700;

    letter-spacing: 2px;

    margin-bottom: 18px;
}

.hero h1 {
    font-size: clamp(48px, 8vw, 90px);

    line-height: 1.02;

    letter-spacing: -4px;

    margin-bottom: 30px;
}

.hero h1 span {
    display: block;

    background: linear-gradient(
        90deg,
        #8ea2ff,
        #c7a7ff
    );

    -webkit-background-clip: text;
    background-clip: text;

    color: transparent;
}

.hero-text {
    max-width: 620px;

    margin: 0 auto 35px;

    color: #a9adb8;

    font-size: 18px;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.primary-button,
.secondary-button {
    padding: 14px 24px;

    border-radius: 12px;

    font-size: 15px;
    font-weight: 700;

    cursor: pointer;

    transition: 0.2s;
}

.primary-button {
    border: none;

    background: #ffffff;
    color: #0b0d12;
}

.primary-button:hover {
    transform: translateY(-2px);
}

.secondary-button {
    border: 1px solid #30343e;

    background: transparent;
    color: #ffffff;
}

.secondary-button:hover {
    background: #171a22;
}


/* SECTIONS */

.interests,
.features {
    max-width: 1200px;

    margin: auto;

    padding: 120px 30px;
}

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

    margin-bottom: 50px;
}

.section-heading h2 {
    font-size: 42px;

    letter-spacing: -1px;

    margin-bottom: 12px;
}

.section-heading > p:last-child {
    color: #969ba7;
}


/* INTERESTS */

.interest-grid {
    display: grid;

    grid-template-columns: repeat(3, 1fr);

    gap: 18px;
}

.interest-card {
    min-height: 170px;

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

    padding: 25px;

    border: 1px solid #252933;
    border-radius: 18px;

    background: #11141b;
    color: #ffffff;

    text-align: left;

    cursor: pointer;

    transition: 0.25s;
}

.interest-card:hover {
    transform: translateY(-5px);

    border-color: #50576a;

    background: #171a23;
}

.interest-card span {
    font-size: 35px;

    margin-bottom: 15px;
}

.interest-card strong {
    font-size: 19px;
}

.interest-card small {
    color: #858a96;

    margin-top: 4px;
}


/* FEATURES */

.features {
    border-top: 1px solid #1d2028;
}

.feature-grid {
    display: grid;

    grid-template-columns: repeat(3, 1fr);

    gap: 20px;
}

.feature-card {
    padding: 30px;

    border: 1px solid #252933;
    border-radius: 18px;

    background: #11141b;
}

.feature-icon {
    font-size: 35px;

    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 21px;

    margin-bottom: 10px;
}

.feature-card p {
    color: #9297a3;

    font-size: 15px;
}


/* FOOTER */

footer {
    border-top: 1px solid #1d2028;

    padding: 50px 7%;

    color: #858a96;
}

.footer-logo {
    color: #ffffff;

    font-size: 22px;
    font-weight: 800;

    margin-bottom: 5px;
}

.copyright {
    margin-top: 25px;

    font-size: 13px;
}


/* MOBILE */

@media (max-width: 800px) {

    .navbar {
        padding: 0 20px;
    }

    .navbar nav {
        display: none;
    }

    .hero {
        min-height: 600px;
    }

    .hero h1 {
        letter-spacing: -2px;
    }

    .interest-grid,
    .feature-grid {
        grid-template-columns: 1fr;
    }

    .interests,
    .features {
        padding: 80px 20px;
    }

    .section-heading h2 {
        font-size: 34px;
    }

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