/**
 * intro.css — Intro-Card der Landing-Page (Hero + How-To-3-Spalten).
 * Quelle: docs/curriculum-source/reference-implementation/curriculum-map.html
 * (Inline-CSS). Im Original mit fester Breite 1700px — hier responsiv mit
 * max-width.
 */

.intro-card {
    max-width: 1280px;
    margin: 0 auto;
    padding: 56px 64px 40px;
    background: var(--surface);
    border-radius: 14px;
    border: 1px solid var(--line);
}

.intro {
    padding: 0;
    max-width: none;
}

.intro-eyebrow {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 18px;
}

.intro h1 {
    font-family: var(--serif);
    font-weight: 400;
    font-size: 56px;
    line-height: 1.05;
    margin: 0 0 14px;
    letter-spacing: -0.02em;
}

.intro h1 em {
    font-style: italic;
    color: var(--accent);
}

.intro-lede {
    font-size: 17px;
    line-height: 1.55;
    color: var(--ink-soft);
    max-width: 760px;
    margin: 0 0 20px;
}

.intro-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--line);
    font-family: var(--mono);
    font-size: 11.5px;
    color: var(--ink-soft);
    letter-spacing: 0.04em;
}

.intro-meta span strong {
    color: var(--ink);
    font-weight: 500;
}

/* ---------- How-To-Grid ---------- */

.howto {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 28px;
    padding-top: 28px;
    border-top: 1px solid var(--line);
}

.howto-item {
    display: block;
    padding: 18px 18px 20px;
    background: var(--bg);
    border-radius: 10px;
    color: var(--ink);
    transition: transform 0.12s, box-shadow 0.12s;
}

.howto-item:hover {
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px -12px oklch(20% 0.05 50 / 0.18);
}

.howto-num {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    color: var(--accent);
    text-transform: uppercase;
    margin-bottom: 8px;
}

.howto-title {
    font-family: var(--serif);
    font-size: 22px;
    font-weight: 400;
    margin: 0 0 6px;
}

.howto-body {
    font-size: 13.5px;
    line-height: 1.5;
    color: var(--ink-soft);
    margin: 0;
}

/* ---------- Mobile ---------- */

@media (max-width: 720px) {
    .intro-card { padding: 32px 24px 28px; }
    .intro h1 { font-size: 36px; }
    .intro-lede { font-size: 15px; }
    .howto { grid-template-columns: 1fr; }
}