:root {
    --primary: #1f2a36;
    --secondary: #44576b;
    --background: #f5f7fa;
    --surface: #ffffff;
    --text: #1e2933;
    --muted: #5f6b76;
    --border: #dbe3ea;
    --shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    --radius: 14px;
    --max-width: 1100px;
}

* {
    box-sizing: border-box;
}

html {
    font-size: 16px;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: var(--background);
    color: var(--text);
    line-height: 1.6;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    width: min(100% - 32px, var(--max-width));
    margin: 0 auto;
}

.site-header {
    background: var(--primary);
    color: #ffffff;
    padding: 20px 0;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.site-title {
    margin: 0;
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.hero {
    padding: 48px 0 24px;
}

.hero-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 36px;
}

.hero-content {
    display: flex;
    align-items: center;
    gap: 32px;
}

.hero-logo {
    flex: 0 0 220px;
    text-align: center;
}

.hero-logo img {
    margin: 0 auto;
}

.hero-text {
    flex: 1;
}

.hero-text h1 {
    margin: 0 0 16px;
    font-size: 2rem;
    color: var(--primary);
}

.hero-text p {
    margin: 0 0 14px;
    color: var(--muted);
    font-size: 1rem;
}

.links-section {
    padding: 16px 0 48px;
}

.links-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
}

.link-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px;
    text-align: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.link-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.09);
}

.link-card a {
    display: block;
    text-decoration: none;
    color: inherit;
}

.link-card img {
    max-height: 140px;
    margin: 0 auto 16px;
}

.link-card h2 {
    margin: 0 0 8px;
    font-size: 1.15rem;
    color: var(--primary);
}

.link-card p {
    margin: 0;
    color: var(--muted);
    font-size: 0.95rem;
}

.site-footer {
    padding: 24px 0 36px;
    text-align: center;
    color: var(--muted);
    font-size: 0.95rem;
}

.site-footer p {
    margin: 0;
}

@media (max-width: 800px) {
    .hero-card {
        padding: 24px;
    }

    .hero-content {
        flex-direction: column;
        text-align: center;
    }

    .hero-logo {
        flex: none;
        max-width: 180px;
        margin: 0 auto;
    }

    .hero-text h1 {
        font-size: 1.7rem;
    }

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

@media (max-width: 480px) {
    .container {
        width: min(100% - 20px, var(--max-width));
    }

    .hero {
        padding-top: 28px;
    }

    .hero-card {
        padding: 20px;
    }

    .hero-text h1 {
        font-size: 1.45rem;
    }

    .hero-text p,
    .link-card p {
        font-size: 0.95rem;
    }
}