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

html {
    scroll-behavior: smooth;
}

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

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

.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */

header {
    width: 100%;
    height: 70px;
    background: #0b0d12;
    border-bottom: 1px solid #20242c;
}

.nav {
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    color: #ffffff;
    font-size: 21px;
    font-weight: 700;
}

nav {
    display: flex;
    gap: 25px;
}

nav a {
    color: #929aa7;
    font-size: 14px;
}

nav a:hover {
    color: #ffffff;
}

/* Hero */

.hero {
    border-bottom: 1px solid #20242c;
    background: #0b0d12;
}

.hero .container {
    padding-top: 110px;
    padding-bottom: 110px;
}

.hero-content {
    max-width: 720px;
}

.small-title {
    color: #3184f4;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 18px;
}

.hero h1 {
    color: #ffffff;
    font-size: 58px;
    line-height: 1.05;
    margin-bottom: 22px;
}

.hero-description {
    max-width: 580px;
    color: #969fac;
    font-size: 17px;
    margin-bottom: 30px;
}

/* Button */

.button {
    display: inline-block;
    padding: 11px 20px;
    background: #1877f2;
    border: 1px solid #1877f2;
    border-radius: 5px;
    color: #ffffff;
    font-size: 14px;
    font-weight: 700;
}

.button:hover {
    background: #1267d5;
}

/* Sections */

.section {
    border-bottom: 1px solid #20242c;
}

.section .container {
    padding-top: 80px;
    padding-bottom: 80px;
}

.section-header {
    margin-bottom: 30px;
}

.section-header h2 {
    color: #ffffff;
    font-size: 30px;
    margin-bottom: 7px;
}

.section-header p {
    color: #7f8997;
    font-size: 14px;
}

/* Games */

.games {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.game-card {
    background: #10141b;
    border: 1px solid #222832;
    border-radius: 7px;
    overflow: hidden;
}

.game-card:hover {
    border-color: #315f94;
}

.game-thumbnail {
    height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #151a22;
    color: #687281;
    font-size: 13px;
}

.game-details {
    padding: 22px;
}

.game-details h3 {
    color: #ffffff;
    font-size: 18px;
    margin-bottom: 8px;
}

.game-details p {
    color: #8c95a2;
    font-size: 14px;
    margin-bottom: 15px;
}

.game-details span {
    color: #697482;
    font-size: 12px;
}

/* About */

.about {
    max-width: 700px;
}

.about p {
    color: #9aa3af;
    font-size: 16px;
    margin-bottom: 18px;
}

/* Contact */

.contact {
    background: #090c11;
}

/* Footer */

footer {
    background: #06080c;
}

.footer-content {
    min-height: 75px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-content p {
    color: #626b78;
    font-size: 12px;
}

/* Mobile */

@media (max-width: 700px) {

    nav {
        display: none;
    }

    .hero .container {
        padding-top: 75px;
        padding-bottom: 75px;
    }

    .hero h1 {
        font-size: 42px;
    }

    .hero-description {
        font-size: 16px;
    }

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

    .section .container {
        padding-top: 60px;
        padding-bottom: 60px;
    }

    .footer-content {
        display: block;
        padding-top: 25px;
        padding-bottom: 25px;
    }
}
```