style.css

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

:root {
    --background: hsl(220, 13%, 8%);
    --foreground: hsl(210, 40%, 98%);
    --card: hsl(220, 13%, 12%);
    --card-foreground: hsl(210, 40%, 98%);
    --primary: hsl(174, 72%, 46%);
    --primary-foreground: hsl(0, 0%, 100%);
    --muted: hsl(220, 13%, 18%);
    --muted-foreground: hsl(215, 16%, 60%);
    --border: hsl(220, 13%, 20%);
    --radius: 0.5rem;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--background);
    color: var(--foreground);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Hero Section */
.hero {
    padding: 4rem 0;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
}

@media (min-width: 768px) {
    .hero-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.hero video {
    display: block;
    margin: 0 auto;
    width: auto;
    max-height: 480px;
    border-radius: 0.5rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.hero-content {
    text-align: center;
}

@media (min-width: 768px) {
    .hero-content {
        text-align: left;
    }
}

.hero-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

@media (min-width: 768px) {
    .hero-title {
        justify-content: flex-start;
    }
}

.hero-title span {
    font-size: 3rem;
}

.hero-title h1 {
    font-size: 2.5rem;
    font-weight: 700;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

@media (min-width: 768px) {
    .tags {
        justify-content: flex-start;
    }
}

.tag {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 9999px;
    background-color: hsla(174, 72%, 46%, 0.15);
    color: var(--primary);
}

.hero-description {
    font-size: 1rem;
    color: var(--muted-foreground);
    max-width: 36rem;
}

.hero-description strong {
    color: var(--foreground);
}

/* Technical Section */
.technical {
    padding: 4rem 0;
    background-color: var(--card);
}

.technical-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 4rem;
    align-items: flex-start;
}

@media (min-width: 768px) {
    .technical-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.technical h2 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    margin-top: 2rem;
}

.technical h2:first-child {
    margin-top: 0;
}

.technical h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    margin-top: 1.5rem;
    color: var(--primary);
}

.steps {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    list-style: none;
}

.step {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 1.75rem;
    height: 1.75rem;
    border-radius: 9999px;
    background-color: var(--primary);
    color: var(--primary-foreground);
    font-size: 0.875rem;
    font-weight: 600;
}

.step-content {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.step-title {
    font-size: 0.8125rem;
    font-weight: 600;
}

.step-body {
    font-size: 0.8125rem;
    color: var(--muted-foreground);
}

.step-body a {
    text-decoration: underline;
    color: var(--muted-foreground);
    transition: color 0.2s;
}

.step-body a:hover {
    color: var(--primary);
}

.step-body code {
    background: var(--muted);
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
    font-size: 0.8125rem;
}

.technical video {
    width: 100%;
    border-radius: 0.5rem;
    box-shadow: 0 20px 40px -12px rgba(0, 0, 0, 0.4);
}

/* Footer */
footer {
    border-top: 1px solid var(--border);
    padding: 3rem 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.footer-column {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.author-section {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.author-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: inherit;
}

.author-link:hover .author-name {
    color: var(--primary);
}

.author-link:hover .author-avatar {
    border-color: var(--primary);
}

.author-avatar {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 9999px;
    border: 2px solid white;
    transition: border-color 0.2s;
}

.author-intro {
    font-size: 0.875rem;
    color: var(--muted-foreground);
}

.author-name {
    font-size: 1.125rem;
    font-weight: 600;
    transition: color 0.2s;
}

.follow-btn {
    display: inline-flex;
    align-items: center;
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 9999px;
    border: 1px solid var(--border);
    background-color: var(--card);
    color: var(--foreground);
    text-decoration: none;
    transition: background-color 0.2s;
}

.follow-btn:hover {
    background-color: var(--muted);
}

.social-links {
    display: flex;
    gap: 0.75rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 9999px;
    background-color: var(--muted);
    color: var(--muted-foreground);
    text-decoration: none;
    transition: all 0.2s;
}

.social-link:hover {
    background-color: var(--primary);
    color: var(--primary-foreground);
}

.social-link svg {
    width: 1.25rem;
    height: 1.25rem;
}

.footer-title {
    font-size: 0.875rem;
    font-weight: 600;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-link {
    font-size: 0.875rem;
    color: var(--muted-foreground);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-link:hover {
    color: var(--primary);
}

/* Responsive */
@media (max-width: 768px) {
    .hero {
        padding: 2rem 0;
    }

    .hero-title h1 {
        font-size: 1.75rem;
    }

    .hero-title span {
        font-size: 2rem;
    }
}