:root {
  --paper: #EFE9DC;
  --paper-deep: #E2DAC5;
  --paper-line: #D8CFB2;
  --ink: #1C2333;
  --ink-soft: #4B5563;
  --ledger-green: #2F5D45;
  --stamp-red: #8C3B34;
  --brass: #A9843C;
  --card-bg: #FBFAF6;

  --serif: Georgia, 'Times New Roman', Times, serif;
  --sans: -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --mono: 'Consolas', 'SFMono-Regular', Menlo, 'Courier New', monospace;

  --maxw: 1120px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background-color: var(--paper);
  background-image: repeating-linear-gradient(
    to bottom,
    rgba(28,35,51,0.035),
    rgba(28,35,51,0.035) 1px,
    transparent 1px,
    transparent 34px
  );
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--ledger-green); }
a:focus-visible, button:focus-visible, .tab:focus-visible {
  outline: 2px solid var(--stamp-red);
  outline-offset: 3px;
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
}

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 0.5em;
  line-height: 1.15;
}

p { max-width: 62ch; }

code, .mono { font-family: var(--mono); }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(239,233,220,0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--paper-line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-weight: 500;
  font-size: 1.05rem;
  color: var(--ink);
  text-decoration: none;
}
.brand-mark {
  width: 26px; height: 26px;
  background: var(--ink);
  position: relative;
  flex: none;
}
.brand-mark::after {
  content: "";
  position: absolute;
  left: 5px; top: 5px; right: 5px; bottom: 9px;
  background: var(--card-bg);
}
.brand-mark::before {
  content: "";
  position: absolute;
  left: 5px; top: 5px; right: 5px; height: 5px;
  background: var(--ledger-green);
}

nav.primary-nav { display: flex; gap: 26px; }
nav.primary-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.95rem;
}
nav.primary-nav a:hover { color: var(--ink); }

.nav-toggle {
  display: none;
  background: none; border: 1px solid var(--ink); color: var(--ink);
  width: 40px; height: 40px; cursor: pointer;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1.5px solid var(--ink);
  font-family: var(--sans);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--ink);
  background: transparent;
  cursor: pointer;
  white-space: nowrap;
}
.btn-primary { background: var(--ink); color: var(--card-bg); }
.btn-primary:hover { background: #10151f; }
.btn-ghost:hover { background: rgba(28,35,51,0.06); }
.btn-accent { border-color: var(--ledger-green); color: var(--ledger-green); }
.btn-accent:hover { background: rgba(47,93,69,0.08); }

/* ---------- Hero ---------- */
.hero { padding: 72px 0 60px; }
.hero .wrap {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}
.hero h1 {
  font-size: clamp(2.1rem, 4vw, 3.15rem);
  max-width: 14ch;
}
.hero .lede {
  font-size: 1.12rem;
  color: var(--ink-soft);
  max-width: 46ch;
}
.hero .cta-row { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 30px; }
.hero .meta-line {
  margin-top: 22px;
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--ink-soft);
}
.hero-art img { width: 100%; height: auto; }

/* ---------- Section scaffolding ---------- */
section { padding: 76px 0; }
.section-alt { background: var(--paper-deep); }
.section-head { max-width: 640px; margin-bottom: 44px; }
.section-head h2 { font-size: clamp(1.6rem, 2.6vw, 2.1rem); }
.section-head p { color: var(--ink-soft); }

/* ---------- Intro / before-after ---------- */
.intro-grid { max-width: 720px; }
.intro-copy p { color: var(--ink-soft); }
.pillquote {
  border-left: 3px solid var(--stamp-red);
  padding-left: 18px;
  font-family: var(--serif);
  font-size: 1.15rem;
  color: var(--ink);
  margin-top: 22px;
}

/* ---------- Feature grid ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--paper-line);
  border: 1px solid var(--paper-line);
}
.feature {
  background: var(--card-bg);
  padding: 30px 26px;
}
.feature .ficon { width: 34px; height: 34px; margin-bottom: 16px; color: var(--ledger-green); }
.feature h3 { font-size: 1.05rem; margin-bottom: 8px; }
.feature p { color: var(--ink-soft); font-size: 0.95rem; margin: 0; }

/* ---------- Workflow ---------- */
.workflow-art { max-width: 900px; margin: 0 auto 8px; }

/* ---------- Tabs (installation) ---------- */
.tabs { border: 1px solid var(--ink); background: var(--card-bg); }
.tab-list {
  display: flex;
  border-bottom: 1px solid var(--ink);
  overflow-x: auto;
}
.tab {
  font-family: var(--mono);
  font-size: 0.88rem;
  background: none;
  border: none;
  border-right: 1px solid var(--ink);
  padding: 14px 22px;
  cursor: pointer;
  color: var(--ink-soft);
  white-space: nowrap;
}
.tab[aria-selected="true"] {
  background: var(--ink);
  color: var(--card-bg);
}
.tab-panel { display: none; padding: 30px 30px 34px; }
.tab-panel.active { display: block; }
.tab-panel ol { padding-left: 22px; }
.tab-panel li { margin-bottom: 14px; color: var(--ink-soft); }
.tab-panel li strong { color: var(--ink); }

pre.code {
  background: var(--ink);
  color: #E7E2D3;
  font-family: var(--mono);
  font-size: 0.86rem;
  padding: 16px 18px;
  overflow-x: auto;
  margin: 10px 0 18px;
  line-height: 1.6;
}
pre.code .c { color: #8FAF9C; }

.note {
  border: 1px dashed var(--brass);
  background: rgba(169,132,60,0.08);
  padding: 14px 18px;
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin-top: 16px;
}

/* ---------- Config example ---------- */
.config-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

/* ---------- Downloads ---------- */
.download-lead { max-width: 640px; margin-bottom: 40px; }
.download-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.dl-card {
  border: 1px solid var(--ink);
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--card-bg);
  text-decoration: none;
  color: inherit;
}
.dl-card:hover { border-color: var(--ledger-green); }
.dl-card .dl-name { font-family: var(--mono); font-size: 0.95rem; color: var(--ink); }
.dl-card .dl-desc { font-size: 0.87rem; color: var(--ink-soft); }
.dl-card .dl-tag {
  align-self: flex-start;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.02em;
  color: var(--ledger-green);
  border: 1px solid var(--ledger-green);
  padding: 2px 8px;
  margin-top: 6px;
}

.repo-callout {
  margin-top: 40px;
  border: 1.5px solid var(--ink);
  padding: 28px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  background: var(--ink);
  color: var(--card-bg);
}
.repo-callout h3 { color: var(--card-bg); margin-bottom: 6px; }
.repo-callout p { color: #C9CFC9; margin: 0; }

/* ---------- Steps (genuine sequence) ---------- */
.steps { counter-reset: step; }
.step {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 18px;
  padding: 18px 0;
  border-top: 1px solid var(--paper-line);
}
.step:first-child { border-top: none; }
.step::before {
  grid-column: 1;
  grid-row: 1 / span 2;
  align-self: start;
  counter-increment: step;
  content: counter(step);
  font-family: var(--mono);
  font-size: 0.95rem;
  color: var(--ledger-green);
  border: 1px solid var(--ledger-green);
  width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
}
.step h3 { grid-column: 2; font-size: 1rem; margin-bottom: 4px; }
.step p { grid-column: 2; color: var(--ink-soft); margin: 0; font-size: 0.95rem; }

/* ---------- Rechtliches ---------- */
.legal-block { padding: 22px 0; border-top: 1px solid var(--paper-line); }
.legal-block:first-child { border-top: none; padding-top: 0; }
.legal-block h3 { font-size: 1.05rem; margin-bottom: 8px; }
.legal-block p { color: var(--ink-soft); font-size: 0.95rem; max-width: 68ch; }

.impressum-img {
  margin-top: 14px;
  max-width: 380px;
  width: 100%;
  height: auto;
  user-select: none;
  -webkit-user-select: none;
  -webkit-user-drag: none;
  -webkit-touch-callout: none;
  pointer-events: none;
}

/* ---------- Footer ---------- */
footer.site-footer {
  border-top: 1px solid var(--paper-line);
  padding: 44px 0;
}
.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
}
.footer-grid p { color: var(--ink-soft); font-size: 0.9rem; }
.footer-links { display: flex; gap: 22px; flex-wrap: wrap; }
.footer-links a { color: var(--ink-soft); text-decoration: none; font-size: 0.9rem; }
.footer-links a:hover { color: var(--ink); }

/* ---------- Responsive ---------- */
@media (max-width: 880px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .hero-art { order: -1; max-width: 380px; margin: 0 auto; }
  .intro-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .config-grid { grid-template-columns: 1fr; }
  .download-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  nav.primary-nav {
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--paper-line);
    flex-direction: column;
    gap: 0;
    display: none;
  }
  nav.primary-nav.open { display: flex; }
  nav.primary-nav a { padding: 14px 28px; border-top: 1px solid var(--paper-line); }
  .nav-toggle { display: block; }
  .header-ctas { display: none; }
  .feature-grid { grid-template-columns: 1fr; }
  section { padding: 54px 0; }
  .repo-callout { flex-direction: column; align-items: flex-start; }
}