@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

body {
    margin: 0;
    padding: 0;

    background:
        radial-gradient(circle at top left, rgba(80,120,255,0.12), transparent 30%),
        radial-gradient(circle at bottom right, rgba(140,80,255,0.10), transparent 35%),
        #0a0f1c;

    color: #f4f7fb;

    font-family: 'Inter', sans-serif;

    line-height: 1.75;

    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

.container,
.article-container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 72px 28px;
}

.hero {
    margin-bottom: 72px;
}

.hero h1 {
    font-size: 64px;
    line-height: 1.05;
    margin-bottom: 24px;
    font-weight: 800;
    letter-spacing: -2px;
}

.subtitle {
    font-size: 21px;
    color: #aebcd0;
    max-width: 850px;
    line-height: 1.8;
}

.section {
    margin-bottom: 72px;
}

.section h2 {
    font-size: 34px;
    margin-bottom: 28px;
    font-weight: 700;
    letter-spacing: -1px;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 28px;
}

.card {
    background: rgba(255,255,255,0.05);

    border: 1px solid rgba(255,255,255,0.08);

    border-radius: 26px;

    padding: 34px;

    text-decoration: none;

    color: #f5f7fb;

    backdrop-filter: blur(14px);

    box-shadow:
        0 10px 40px rgba(0,0,0,0.25),
        inset 0 1px 0 rgba(255,255,255,0.04);

    transition: all 0.22s ease;
}

.card:hover {
    transform: translateY(-6px);

    border-color: rgba(120,160,255,0.45);

    box-shadow:
        0 18px 48px rgba(0,0,0,0.34),
        0 0 24px rgba(100,140,255,0.16);
}

.card h3 {
    margin-top: 0;
    margin-bottom: 18px;

    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.card p {
    color: #b3bfd0;
    font-size: 16px;
    line-height: 1.75;
}

.disabled {
    opacity: 0.55;
}

.footer {
    margin-top: 90px;

    padding-top: 28px;

    border-top: 1px solid rgba(255,255,255,0.08);

    color: #7f92ac;

    font-size: 15px;
}

.article-container h1 {
    font-size: 54px;
    line-height: 1.1;
    font-weight: 800;
    letter-spacing: -2px;
    margin-bottom: 24px;
}

.article-container h2 {
    margin-top: 56px;
    margin-bottom: 22px;

    font-size: 34px;

    font-weight: 700;

    letter-spacing: -1px;
}

.article-content {
    font-size: 18px;
    line-height: 1.9;
    color: #d9e2ef;
}

.article-content p {
    margin-bottom: 22px;
}

.article-content ul {
    margin-bottom: 28px;
}

.article-content li {
    margin-bottom: 12px;
}

.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 34px 0;

    background: rgba(255,255,255,0.03);

    border-radius: 18px;
    overflow: hidden;
}

.article-content th,
.article-content td {
    border: 1px solid rgba(255,255,255,0.08);
    padding: 16px;
    text-align: left;
}

.article-content th {
    background: rgba(255,255,255,0.05);
}

.article-content pre {
    background: rgba(255,255,255,0.045);

    padding: 28px;

    border-radius: 20px;

    overflow-x: auto;

    line-height: 1.7;

    border: 1px solid rgba(255,255,255,0.08);
}

.back-link {
    display: inline-block;

    margin-bottom: 42px;

    color: #8eb4ff;

    text-decoration: none;

    font-size: 15px;
}

.back-link:hover {
    opacity: 0.85;
}

hr {
    border: none;

    border-top: 1px solid rgba(255,255,255,0.08);

    margin: 42px 0;
}