:root {
  --ink: #12212e;
  --ink-soft: #4a5a68;
  --line: #e2e7ec;
  --bg: #ffffff;
  --bg-soft: #f5f7f9;
  --accent: #1f5f8b;
  --accent-dark: #14425f;
  --wrap: 46rem;
  --wrap-wide: 64rem;
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.7;
}

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

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--accent-dark); }

.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: 1.25rem; }
/* Header und Footer laufen breiter als der Lesetext, sonst bricht die Navigation um. */
.header-inner, .footer-inner { max-width: var(--wrap-wide); }

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--accent); color: #fff; padding: .6rem 1rem; z-index: 100;
}
.skip:focus { left: .5rem; top: .5rem; }

/* Header */
.site-header {
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; background: var(--bg); z-index: 40;
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; min-height: 4.25rem;
}
.brand { display: flex; align-items: center; gap: .6rem; font-weight: 700; color: var(--ink); text-decoration: none; flex: none; }
.brand img { width: 32px; height: 32px; border-radius: 6px; flex: none; }
.brand span { font-size: 1rem; letter-spacing: -.01em; white-space: nowrap; }

.nav-list { display: flex; align-items: center; gap: 1.5rem; list-style: none; margin: 0; padding: 0; }
.nav-list a { color: var(--ink-soft); text-decoration: none; font-size: .95rem; white-space: nowrap; }
.nav-list a:hover, .nav-list a[aria-current="page"] { color: var(--accent); }
.nav-list a[aria-current="page"] { font-weight: 600; }

.nav-toggle, .nav-close { display: none; }

/* Mobile drawer */
@media (max-width: 60rem) {
  .nav-toggle {
    display: inline-flex; align-items: center; justify-content: center;
    width: 2.75rem; height: 2.75rem; padding: 0;
    background: none; border: 1px solid var(--line); border-radius: 8px;
    color: var(--ink); cursor: pointer;
  }
  .site-nav {
    position: fixed; inset: 0 0 0 auto;
    width: min(20rem, 82vw);
    background: var(--bg);
    border-left: 1px solid var(--line);
    box-shadow: -16px 0 40px rgba(18, 33, 46, .12);
    transform: translateX(100%);
    transition: transform .25s ease;
    padding: 1.25rem;
    z-index: 60;
    display: flex; flex-direction: column;
  }
  .site-nav[data-open="true"] { transform: translateX(0); }
  .nav-close {
    display: inline-flex; align-items: center; justify-content: center;
    align-self: flex-end;
    width: 2.75rem; height: 2.75rem;
    background: none; border: 1px solid var(--line); border-radius: 8px;
    color: var(--ink); cursor: pointer; font-size: 1.25rem; line-height: 1;
  }
  .nav-list { flex-direction: column; align-items: stretch; gap: 0; margin-top: 1rem; }
  .nav-list a { display: block; padding: .85rem .25rem; font-size: 1.05rem; border-bottom: 1px solid var(--line); }
  .nav-backdrop {
    position: fixed; inset: 0; background: rgba(18, 33, 46, .45);
    opacity: 0; pointer-events: none; transition: opacity .25s ease; z-index: 50;
  }
  .nav-backdrop[data-open="true"] { opacity: 1; pointer-events: auto; }
}

/* Page head */
.page-head { padding: 3rem 0 1.5rem; border-bottom: 1px solid var(--line); }
.eyebrow { margin: 0 0 .5rem; font-size: .8rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); }
h1 { margin: 0 0 .75rem; font-size: clamp(1.9rem, 5vw, 2.6rem); line-height: 1.2; letter-spacing: -.02em; }
.lede { margin: 0; color: var(--ink-soft); font-size: 1.15rem; }

/* Article */
.prose { padding: 2.5rem 0 3rem; }
.prose h2 { margin: 2.5rem 0 .75rem; font-size: 1.5rem; line-height: 1.3; letter-spacing: -.01em; }
.prose h3 { margin: 1.75rem 0 .5rem; font-size: 1.15rem; line-height: 1.4; }
.prose h4 { margin: 1.25rem 0 .5rem; font-size: 1rem; }
.prose p { margin: 0 0 1.15rem; }
.prose ul, .prose ol { margin: 0 0 1.15rem; padding-left: 1.35rem; }
.prose li { margin-bottom: .4rem; }
.prose > h2:first-child, .prose > p:first-child { margin-top: 0; }

/* Cards */
.card-grid { display: grid; gap: 1rem; grid-template-columns: 1fr; margin: 0 0 1rem; padding: 0; list-style: none; }
@media (min-width: 40rem) { .card-grid { grid-template-columns: 1fr 1fr; } }
.card {
  border: 1px solid var(--line); border-radius: 10px; padding: 1.25rem;
  background: var(--bg-soft);
}
.card h3 { margin: 0 0 .4rem; font-size: 1.1rem; }
.card h3 a { text-decoration: none; }
.card h3 a:hover { text-decoration: underline; }
.card p { margin: 0; color: var(--ink-soft); font-size: .95rem; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); background: var(--bg-soft); padding: 2rem 0; margin-top: 2rem; }
.footer-inner { display: flex; flex-wrap: wrap; gap: .75rem 1.5rem; justify-content: space-between; align-items: center; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 1.25rem; list-style: none; margin: 0; padding: 0; }
.footer-nav a { color: var(--ink-soft); font-size: .9rem; text-decoration: none; }
.footer-nav a:hover { color: var(--accent); }
.copyright { margin: 0; color: var(--ink-soft); font-size: .9rem; }