/* ============================================================================
   unifederation.eu — Landing Page
   Keine externen Ressourcen: keine CDN-Fonts, keine Tracker, keine Requests
   nach außen. Das ist Absicht — eine Seite über Datenschutz lädt nichts nach.
   ========================================================================== */

/* ---------- Tokens: Light ist die Basis ---------------------------------- */
:root {
  --bg:            #f6f8fc;
  --bg-elev:       #ffffff;
  --bg-sunken:     #eef2f9;
  --bg-code:       #0f1626;
  --fg:            #0f172a;
  --fg-muted:      #475069;
  --fg-subtle:     #6b7488;
  --border:        #e2e7f0;
  --border-strong: #ccd4e3;

  --brand:    #2563eb;
  --brand-2:  #7c3aed;
  --brand-3:  #0d9488;
  --brand-ink:#1d4ed8;
  --warm:     #b45309;
  --ok:       #0f766e;

  --grad: linear-gradient(120deg, #2563eb 0%, #7c3aed 52%, #0d9488 100%);
  --grad-soft: linear-gradient(120deg, rgba(37,99,235,.10), rgba(124,58,246,.10) 55%, rgba(13,148,136,.10));

  --shadow-sm: 0 1px 2px rgba(15,23,42,.05), 0 1px 3px rgba(15,23,42,.04);
  --shadow-md: 0 4px 12px rgba(15,23,42,.06), 0 12px 32px rgba(15,23,42,.06);
  --shadow-lg: 0 18px 60px rgba(15,23,42,.12);

  --r-sm: 8px;
  --r:    14px;
  --r-lg: 22px;

  --diagram-line: #94a1b8;
  --hero-fg:      #f4f7ff;
  --hero-fg-soft: #c3cee6;

  --maxw: 1140px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
          "Noto Sans", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", "JetBrains Mono", Menlo,
          Consolas, "Liberation Mono", monospace;
}

/* ---------- Tokens: Dark (System-Voreinstellung) ------------------------- */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg:            #080d17;
    --bg-elev:       #0f1626;
    --bg-sunken:     #0b111e;
    --bg-code:       #060a12;
    --fg:            #eef2fa;
    --fg-muted:      #a7b2c8;
    --fg-subtle:     #8593ab;
    --border:        #1d2942;
    --border-strong: #2b3a5a;

    --brand:    #6ea0ff;
    --brand-2:  #a78bfa;
    --brand-3:  #2dd4bf;
    --brand-ink:#9dbcff;
    --warm:     #fbbf24;
    --ok:       #2dd4bf;

    --grad: linear-gradient(120deg, #3b82f6 0%, #8b5cf6 52%, #14b8a6 100%);
    --grad-soft: linear-gradient(120deg, rgba(59,130,246,.16), rgba(139,92,246,.16) 55%, rgba(20,184,166,.16));

    --shadow-sm: 0 1px 2px rgba(0,0,0,.4);
    --shadow-md: 0 6px 20px rgba(0,0,0,.45);
    --shadow-lg: 0 24px 70px rgba(0,0,0,.55);

    --diagram-line: #5a6b8a;
  }
}

/* ---------- Tokens: Dark (ausdrücklich gewählt) -------------------------- */
:root[data-theme="dark"] {
  --bg:            #080d17;
  --bg-elev:       #0f1626;
  --bg-sunken:     #0b111e;
  --bg-code:       #060a12;
  --fg:            #eef2fa;
  --fg-muted:      #a7b2c8;
  --fg-subtle:     #8593ab;
  --border:        #1d2942;
  --border-strong: #2b3a5a;

  --brand:    #6ea0ff;
  --brand-2:  #a78bfa;
  --brand-3:  #2dd4bf;
  --brand-ink:#9dbcff;
  --warm:     #fbbf24;
  --ok:       #2dd4bf;

  --grad: linear-gradient(120deg, #3b82f6 0%, #8b5cf6 52%, #14b8a6 100%);
  --grad-soft: linear-gradient(120deg, rgba(59,130,246,.16), rgba(139,92,246,.16) 55%, rgba(20,184,166,.16));

  --shadow-sm: 0 1px 2px rgba(0,0,0,.4);
  --shadow-md: 0 6px 20px rgba(0,0,0,.45);
  --shadow-lg: 0 24px 70px rgba(0,0,0,.55);

  --diagram-line: #5a6b8a;
}

/* ---------- Reset & Base ------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  /* Sticky-Header: sonst verschwindet die Überschrift beim Ankersprung darunter */
  scroll-padding-top: 88px;
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 { line-height: 1.15; margin: 0 0 .5em; letter-spacing: -.02em; font-weight: 700; }
h2 { font-size: clamp(1.7rem, 1.2rem + 1.9vw, 2.6rem); }
h3 { font-size: 1.2rem; }
h4 { font-size: 1.02rem; }
p  { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

a { color: var(--brand-ink); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

code, pre { font-family: var(--mono); font-size: .86em; }
:not(pre) > code {
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: .1em .38em;
  color: var(--fg);
  white-space: nowrap;
}
img, svg { max-width: 100%; }
ul, ol { margin: 0; padding: 0; }
em { font-style: italic; }

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: fixed; top: -60px; left: 12px; z-index: 200;
  background: var(--bg-elev); color: var(--fg);
  border: 1px solid var(--border-strong); border-radius: var(--r-sm);
  padding: .6rem 1rem; box-shadow: var(--shadow-md);
  transition: top .15s ease;
}
.skip-link:focus { top: 12px; }

/* ---------- Layout ------------------------------------------------------- */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(1.1rem, 4vw, 2rem); }
.wrap-narrow { max-width: 860px; }

.section { padding: clamp(3.6rem, 7vw, 6.5rem) 0; }
.section-alt { background: var(--bg-sunken); border-block: 1px solid var(--border); }

.sec-head { max-width: 760px; margin-bottom: clamp(2rem, 4vw, 3.2rem); }
.sec-head h2 { margin-bottom: .6rem; }
.lede { color: var(--fg-muted); font-size: 1.06rem; }

.eyebrow {
  display: inline-flex; align-items: center; gap: .5rem;
  margin: 0 0 .7rem;
  font-size: .78rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  color: var(--brand-ink);
}
.eyebrow::before {
  content: ""; width: 26px; height: 2px; border-radius: 2px; background: var(--grad);
}
.eyebrow-warm { color: var(--warm); }
.eyebrow-warm::before { background: currentColor; }

/* ---------- Header ------------------------------------------------------- */
.progress { position: fixed; inset: 0 0 auto; height: 3px; z-index: 120; pointer-events: none; }
.progress span { display: block; height: 100%; width: 0; background: var(--grad); }

.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--bg);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease, background .2s ease;
}
.site-header.is-stuck { border-bottom-color: var(--border); box-shadow: var(--shadow-sm); }

.header-inner { display: flex; align-items: center; gap: 1rem; height: 68px; }

.brand { display: inline-flex; align-items: center; gap: .6rem; color: var(--fg); flex: 0 0 auto; }
.brand:hover { text-decoration: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name { white-space: nowrap; }
.brand-text strong { font-size: 1.02rem; letter-spacing: -.02em; }
.brand-tld { color: var(--fg-subtle); }
.brand-text small { font-size: .72rem; color: var(--fg-subtle); letter-spacing: .02em; }

.site-nav { display: flex; gap: .2rem; margin-inline: auto; }
.site-nav a {
  position: relative; padding: .5rem .62rem; border-radius: var(--r-sm);
  font-size: .92rem; font-weight: 500; color: var(--fg-muted);
  white-space: nowrap;
}
.site-nav a:hover { color: var(--fg); background: var(--bg-sunken); text-decoration: none; }
.site-nav a.active { color: var(--fg); }
.site-nav a.active::after {
  content: ""; position: absolute; left: .62rem; right: .62rem; bottom: .22rem;
  height: 2px; border-radius: 2px; background: var(--grad);
}

.header-actions { display: flex; align-items: center; gap: .5rem; flex: 0 0 auto; }

.site-nav .nav-cta { display: none; }

.lang-switch {
  display: inline-flex; background: var(--bg-sunken);
  border: 1px solid var(--border); border-radius: 999px; padding: 2px;
}
.lang-switch button {
  border: 0; background: transparent; color: var(--fg-subtle);
  font: inherit; font-size: .78rem; font-weight: 700; letter-spacing: .04em;
  padding: .26rem .6rem; border-radius: 999px; cursor: pointer;
}
.lang-switch button[aria-pressed="true"] { background: var(--bg-elev); color: var(--fg); box-shadow: var(--shadow-sm); }

.icon-btn {
  display: inline-grid; place-items: center;
  width: 34px; height: 34px; padding: 0; cursor: pointer;
  background: var(--bg-sunken); color: var(--fg-muted);
  border: 1px solid var(--border); border-radius: 999px;
}
.icon-btn:hover { color: var(--fg); }
.theme-icon { width: 16px; height: 16px; border-radius: 50%; background: var(--grad); position: relative; }
:root[data-theme="light"] .theme-icon { background: #f59e0b; }
:root[data-theme="dark"]  .theme-icon { background: transparent; box-shadow: inset -5px 2px 0 0 var(--fg-muted); }

.burger { display: none; }

/* ---------- Buttons ----------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .78rem 1.25rem; border-radius: 999px; border: 1px solid transparent;
  font-weight: 600; font-size: .96rem; cursor: pointer;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-sm { padding: .45rem .95rem; font-size: .86rem; }
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 6px 20px rgba(37,99,235,.28); }
.btn-primary:hover { box-shadow: 0 10px 28px rgba(37,99,235,.36); }
.btn-ghost { background: transparent; color: var(--fg); border-color: var(--border-strong); }
.btn-ghost:hover { background: var(--bg-elev); }
.btn-ico { width: 18px; height: 18px; }

/* ---------- Hero -------------------------------------------------------- */
.hero { position: relative; isolation: isolate; overflow: hidden; padding-top: clamp(2.5rem, 5vw, 4.5rem); }
.hero-bg { position: absolute; inset: -20% -10% auto -10%; height: 145%; z-index: -1; }
.hero-bg .blob { position: absolute; border-radius: 50%; filter: blur(70px); opacity: .55; }
.hero-bg .blob-1 { width: 46vw; height: 46vw; left: -6vw; top: -8vw; background: radial-gradient(circle, #3b82f6, transparent 65%); }
.hero-bg .blob-2 { width: 40vw; height: 40vw; right: -4vw; top: -2vw; background: radial-gradient(circle, #8b5cf6, transparent 65%); }
.hero-bg .blob-3 { width: 38vw; height: 38vw; left: 34vw; top: 16vw; background: radial-gradient(circle, #14b8a6, transparent 65%); }
.hero-bg .grid-lines {
  position: absolute; inset: 0;
  background-image: linear-gradient(var(--border) 1px, transparent 1px),
                    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 75%);
  opacity: .5;
}
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .hero-bg .blob { opacity: .34; } }
:root[data-theme="dark"] .hero-bg .blob { opacity: .34; }

.hero-inner {
  display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  gap: clamp(2rem, 5vw, 4rem); align-items: center;
  padding-block: clamp(1.5rem, 4vw, 3.5rem) clamp(3rem, 6vw, 5rem);
}

.badge-row { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1.3rem; }
.badge {
  display: inline-flex; align-items: center; gap: .45rem;
  padding: .34rem .8rem; border-radius: 999px;
  font-size: .78rem; font-weight: 600; letter-spacing: .02em;
  border: 1px solid var(--border-strong); background: var(--bg-elev); color: var(--fg-muted);
  box-shadow: var(--shadow-sm);
}
.badge-live { color: var(--fg); }
.badge-live .dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--brand-3);
  box-shadow: 0 0 0 3px rgba(13,148,136,.22);
  animation: pulse 2.4s ease-in-out infinite;
}
.badge-soft { background: transparent; }

.hero-title { font-size: clamp(2.2rem, 1.3rem + 3.9vw, 3.8rem); letter-spacing: -.035em; margin-bottom: 1.1rem; }
.hero-title span { display: block; }
.hero-title .grad {
  background: var(--grad); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.hero-sub { font-size: clamp(1.02rem, .96rem + .3vw, 1.2rem); color: var(--fg-muted); max-width: 34em; }

.cta-row { display: flex; flex-wrap: wrap; gap: .7rem; margin: 1.8rem 0 2.2rem; }

.hero-facts { display: flex; flex-wrap: wrap; gap: 0 2rem; list-style: none; }
.hero-facts li { display: flex; flex-direction: column; padding: .2rem 0; }
.hero-facts strong { font-size: 1.05rem; letter-spacing: -.01em; }
.hero-facts span { font-size: .8rem; color: var(--fg-subtle); text-transform: uppercase; letter-spacing: .08em; }

/* Orbit-Grafik */
.hero-art { display: grid; place-items: center; }
.orbit { width: 100%; max-width: 440px; overflow: visible; }
.orbit-track { fill: none; stroke: var(--border-strong); stroke-width: 1.5; }
.orbit-spin {
  fill: none; stroke: var(--brand-2); stroke-width: 2; opacity: .65;
  stroke-dasharray: 6 24; transform-origin: 210px 210px;
  animation: spin 34s linear infinite;
}
.orbit-links line { stroke: var(--border-strong); stroke-width: 1.5; stroke-dasharray: 4 6; }
.orbit-nodes circle {
  fill: var(--bg-elev); stroke: var(--brand); stroke-width: 3;
  animation: bob 4.5s ease-in-out infinite;
}
.orbit-nodes .n1 { animation-delay: 0s; }
.orbit-nodes .n2 { animation-delay: .5s; }
.orbit-nodes .n3 { animation-delay: 1s; }
.orbit-nodes .n4 { animation-delay: 1.5s; }
.orbit-nodes .n5 { animation-delay: 2s; }
.orbit-nodes .n6 { animation-delay: 2.5s; }
.core-halo { fill: var(--brand); opacity: .12; }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes bob { 0%, 100% { opacity: .55; } 50% { opacity: 1; } }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .45; } }

/* Strip unter dem Hero */
.hero-strip {
  border-top: 1px solid var(--border);
  background: var(--bg-elev);
  background: color-mix(in srgb, var(--bg-elev) 70%, transparent);
}
.strip-inner { display: flex; flex-wrap: wrap; gap: 1rem 2.6rem; padding-block: 1.1rem; }
.strip-inner span { display: flex; flex-direction: column; gap: .1rem; }
.strip-inner code { font-size: .92rem; color: var(--fg); background: none; border: 0; padding: 0; }
.strip-inner small { color: var(--fg-subtle); font-size: .8rem; }

/* ---------- Cards ------------------------------------------------------- */
.cards { display: grid; gap: clamp(1rem, 2vw, 1.4rem); }
.cards-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cards-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cards-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.cards.tight { margin-top: clamp(1rem, 2vw, 1.4rem); }

.card {
  position: relative; overflow: hidden;
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: clamp(1.3rem, 2.2vw, 1.9rem);
  box-shadow: var(--shadow-sm);
  transition: transform .2s ease, box-shadow .25s ease, border-color .2s ease;
}
.card::before {
  content: ""; position: absolute; inset: 0 0 auto; height: 3px;
  background: var(--grad); opacity: 0; transition: opacity .25s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--border-strong); }
.card:hover::before { opacity: 1; }
.card h3 { margin-bottom: .45rem; }
.card p { color: var(--fg-muted); }
.card-num {
  display: block; font-family: var(--mono); font-size: .8rem; font-weight: 700;
  letter-spacing: .1em; color: var(--brand-ink); margin-bottom: .8rem;
}
.card-lg { display: flex; flex-direction: column; gap: .9rem; }
.card-top { display: flex; align-items: center; justify-content: space-between; gap: .8rem; flex-wrap: wrap; }
.card-top code { font-size: .8rem; color: var(--fg-subtle); background: none; border: 0; padding: 0; }

.pill {
  display: inline-flex; padding: .28rem .7rem; border-radius: 999px;
  font-size: .8rem; font-weight: 700; letter-spacing: .01em;
  background: var(--bg-sunken); border: 1px solid var(--border); color: var(--fg);
}
.pill-brand { background: var(--grad-soft); border-color: transparent; color: var(--brand-ink); }

.ticks { list-style: none; display: grid; gap: .5rem; }
.ticks li { position: relative; padding-left: 1.6rem; font-size: .94rem; color: var(--fg-muted); }
.ticks li::before {
  content: ""; position: absolute; left: 0; top: .48em;
  width: 9px; height: 9px; border-radius: 3px; background: var(--grad);
}

.link-arrow { display: inline-flex; align-items: center; gap: .35rem; font-weight: 600; font-size: .94rem; margin-top: auto; }
.link-arrow::after { content: "→"; transition: transform .18s ease; }
.link-arrow:hover::after { transform: translateX(3px); }

.mini {
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--r); padding: 1.15rem 1.25rem;
}
.mini h4 { margin-bottom: .3rem; }
.mini p { color: var(--fg-muted); font-size: .93rem; }
.mini-flat { background: transparent; border-style: dashed; }

/* ---------- Zitat ------------------------------------------------------- */
.quote {
  margin: clamp(2rem, 4vw, 3.2rem) 0 0;
  padding: clamp(1.6rem, 3vw, 2.6rem);
  border-radius: var(--r-lg);
  background: var(--grad-soft);
  border: 1px solid var(--border);
  position: relative;
}
.quote blockquote {
  margin: 0; font-size: clamp(1.1rem, 1rem + .7vw, 1.5rem);
  line-height: 1.45; letter-spacing: -.015em; font-weight: 500;
}
.quote figcaption { margin-top: .9rem; font-size: .82rem; text-transform: uppercase; letter-spacing: .1em; color: var(--fg-subtle); }

/* ---------- Steps & Flow ------------------------------------------------ */
.steps { list-style: none; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: clamp(1rem, 2vw, 1.5rem); }
.step { position: relative; padding-top: 3.2rem; }
.step-num {
  position: absolute; top: 0; left: 0;
  width: 2.4rem; height: 2.4rem; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--grad); color: #fff; font-weight: 700; font-size: 1rem;
  box-shadow: 0 4px 14px rgba(37,99,235,.28);
}
.step::after {
  content: ""; position: absolute; top: 1.2rem; left: 3rem; right: -1rem;
  height: 1px; background: repeating-linear-gradient(90deg, var(--border-strong) 0 6px, transparent 6px 12px);
}
.step:last-child::after { display: none; }
.step h3 { font-size: 1.06rem; margin-bottom: .35rem; }
.step p { color: var(--fg-muted); font-size: .94rem; }

.flow { list-style: none; counter-reset: f; display: grid; gap: .55rem; }
.flow li {
  counter-increment: f;
  display: flex; align-items: flex-start; gap: .9rem;
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--r); padding: .85rem 1.1rem;
  font-size: .97rem;
}
.flow li::before {
  content: counter(f);
  flex: 0 0 auto; width: 1.55rem; height: 1.55rem; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--bg-sunken); border: 1px solid var(--border-strong);
  font-family: var(--mono); font-size: .78rem; font-weight: 700; color: var(--brand-ink);
}

.split { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: clamp(1.4rem, 3vw, 2.6rem); align-items: start; }
.split-aside {
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: clamp(1.3rem, 2.2vw, 1.8rem);
  box-shadow: var(--shadow-sm);
}
.split-aside h3 { font-size: 1.08rem; margin-bottom: 1rem; }
.deflist { margin: 0; }
.deflist dt { font-weight: 700; font-size: .95rem; margin-top: 1rem; }
.deflist dt:first-of-type { margin-top: 0; }
.deflist dd { margin: .2rem 0 0; color: var(--fg-muted); font-size: .92rem; }

.note {
  margin-top: 1.2rem; padding: .95rem 1.15rem;
  border-left: 3px solid var(--border-strong); border-radius: 0 var(--r) var(--r) 0;
  background: var(--bg-elev); color: var(--fg-muted); font-size: .94rem;
}
.note-ok { border-left-color: var(--ok); }

/* ---------- Diagramm ---------------------------------------------------- */
.diagram-card {
  margin-top: clamp(2.2rem, 4vw, 3.4rem);
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: clamp(1.2rem, 2.4vw, 2rem);
  box-shadow: var(--shadow-sm);
}
.diagram-head h3 { margin-bottom: .25rem; }
.diagram-head p { color: var(--fg-subtle); font-size: .88rem; }
.diagram-scroll { overflow-x: auto; margin: 1.2rem -.4rem 0; padding: 0 .4rem .6rem; }
.diagram { display: block; min-width: 820px; width: 100%; color: var(--diagram-line); }
.diagram .edge { fill: none; stroke: currentColor; stroke-width: 1.6; }
.diagram .edge-dash { stroke-dasharray: 5 5; }
.diagram .edge-labels text {
  fill: var(--fg-subtle); font-family: var(--font); font-size: 12.5px;
  text-anchor: middle; font-weight: 600;
  /* Halo in Hintergrundfarbe: die Beschriftung sitzt teils auf den Linien */
  paint-order: stroke;
  stroke: var(--bg-elev); stroke-width: 4px; stroke-linejoin: round;
}
.diagram .edge-labels .lbl-end   { text-anchor: end; }
.diagram .edge-labels .lbl-start { text-anchor: start; }
.diagram .node rect { fill: var(--bg-elev); stroke: var(--border-strong); stroke-width: 1.6; }
.diagram .node-accent rect { fill: var(--bg-sunken); stroke: var(--brand); }
.diagram .node-ext rect { stroke-dasharray: 6 5; }
.diagram .node-git rect { fill: var(--bg-sunken); stroke: var(--border-strong); }
.diagram .node-plain rect { fill: none; stroke-dasharray: 3 5; }
.diagram .n-title { fill: var(--fg); font-family: var(--font); font-size: 15.5px; font-weight: 700; text-anchor: middle; }
.diagram .n-sub  { fill: var(--fg-subtle); font-family: var(--font); font-size: 11.5px; text-anchor: middle; }
.diagram-note { margin-top: 1rem; color: var(--fg-muted); font-size: .94rem; }

/* ---------- Tabellen & Code -------------------------------------------- */
.table-wrap {
  overflow-x: auto; border: 1px solid var(--border); border-radius: var(--r-lg);
  background: var(--bg-elev); box-shadow: var(--shadow-sm);
  margin-bottom: clamp(1.2rem, 2.4vw, 1.8rem);
}
.tbl { width: 100%; border-collapse: collapse; min-width: 640px; font-size: .93rem; }
.tbl th, .tbl td { text-align: left; padding: .85rem 1.1rem; border-bottom: 1px solid var(--border); vertical-align: top; }
.tbl thead th {
  font-size: .76rem; text-transform: uppercase; letter-spacing: .09em;
  color: var(--fg-subtle); background: var(--bg-sunken); white-space: nowrap;
}
.tbl tbody tr:last-child td { border-bottom: 0; }
.tbl tbody tr:hover { background: var(--bg-sunken); }
.tbl code { white-space: nowrap; }

.code-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(1rem, 2vw, 1.4rem); }
.code-card { border: 1px solid var(--border); border-radius: var(--r-lg); overflow: hidden; background: var(--bg-code); }
.code-head {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: .6rem .95rem; background: rgba(255,255,255,.05);
  border-bottom: 1px solid rgba(255,255,255,.08);
  font-size: .8rem; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: #b9c6e4;
}
.copy-btn {
  border: 1px solid rgba(255,255,255,.16); background: transparent; color: #cfd9f0;
  font: inherit; font-size: .72rem; letter-spacing: .04em;
  padding: .2rem .6rem; border-radius: 999px; cursor: pointer;
}
.copy-btn:hover { background: rgba(255,255,255,.1); color: #fff; }
.copy-btn.done { border-color: var(--brand-3); color: var(--brand-3); }
.code-card pre { margin: 0; padding: 1.05rem 1.15rem; overflow-x: auto; }
.code-card code { color: #dfe7fa; font-size: .82rem; line-height: 1.7; }

/* ---------- Relief / Offene Punkte / FAQ ------------------------------- */
.relief {
  margin-top: clamp(1.4rem, 3vw, 2.2rem);
  border-radius: var(--r-lg); border: 1px solid var(--border);
  background: var(--bg-elev); padding: clamp(1.3rem, 2.4vw, 2rem);
}
.relief h3 { margin-bottom: 1rem; }
.relief-list { list-style: none; counter-reset: r; display: grid; gap: .7rem; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.relief-list li { counter-increment: r; position: relative; padding-left: 2.4rem; color: var(--fg-muted); font-size: .95rem; }
.relief-list li::before {
  content: counter(r); position: absolute; left: 0; top: .05em;
  width: 1.7rem; height: 1.7rem; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--grad-soft); border: 1px solid var(--border);
  font-family: var(--mono); font-size: .76rem; font-weight: 700; color: var(--brand-ink);
}

.open-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(1rem, 2vw, 1.4rem); }
.open-item {
  border-left: 3px solid var(--warm); border-radius: 0 var(--r) var(--r) 0;
  background: var(--bg-elev); border-top: 1px solid var(--border);
  border-right: 1px solid var(--border); border-bottom: 1px solid var(--border);
  padding: 1.1rem 1.25rem;
}
.open-item h4 { margin-bottom: .3rem; }
.open-item p { color: var(--fg-muted); font-size: .93rem; }

.faq { display: grid; gap: .6rem; }
.faq details {
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--r); padding: .3rem .2rem;
  transition: border-color .2s ease;
}
.faq details[open] { border-color: var(--border-strong); box-shadow: var(--shadow-sm); }
.faq summary {
  cursor: pointer; list-style: none; padding: .8rem 1rem .8rem 2.4rem;
  font-weight: 600; position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before {
  content: "+"; position: absolute; left: 1rem; top: .78rem;
  font-family: var(--mono); font-weight: 700; color: var(--brand-ink);
}
.faq details[open] summary::before { content: "–"; }
.faq p { margin: 0; padding: 0 1rem 1rem 2.4rem; color: var(--fg-muted); font-size: .95rem; }

/* ---------- CTA & Footer ---------------------------------------------- */
.section-cta { padding-bottom: clamp(4rem, 8vw, 7rem); }
.cta-panel {
  display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
  gap: clamp(1.6rem, 4vw, 3rem);
  border-radius: var(--r-lg); border: 1px solid var(--border);
  background: var(--grad-soft); padding: clamp(1.6rem, 4vw, 3rem);
  box-shadow: var(--shadow-md);
}
.cta-copy h2 { margin-bottom: .6rem; }
.cta-copy p { color: var(--fg-muted); }
.cta-panel .cta-row { margin: 1.6rem 0 0; }

.contact-card {
  align-self: start;
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--r); padding: 1.3rem 1.4rem;
}
.contact-card h3 { font-size: 1rem; margin-bottom: .8rem; }
.contact-card dl { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: .4rem 1rem; font-size: .92rem; }
.contact-card dt { font-weight: 600; color: var(--fg-muted); }
.contact-card dd { margin: 0; }
.contact-card dd a { font-weight: 500; }
.fine { margin-top: 1rem; font-size: .82rem; color: var(--fg-subtle); }

.site-footer { border-top: 1px solid var(--border); background: var(--bg-sunken); padding: clamp(2rem, 4vw, 3rem) 0; }
.footer-inner { display: grid; gap: 1.6rem; }
.footer-brand { display: flex; align-items: flex-start; gap: .8rem; }
.footer-brand p { margin: .15rem 0 0; color: var(--fg-subtle); font-size: .88rem; max-width: 46ch; }
.footer-links { display: flex; flex-wrap: wrap; gap: .4rem 1.4rem; }
.footer-links a { font-size: .92rem; color: var(--fg-muted); }
.footer-links a:hover { color: var(--fg); }
.footer-fine { display: flex; flex-wrap: wrap; gap: .5rem; margin: 0; font-size: .82rem; color: var(--fg-subtle); }

.to-top {
  position: fixed; right: 1.1rem; bottom: 1.1rem; z-index: 90;
  width: 42px; height: 42px; border-radius: 50%; cursor: pointer;
  display: grid; place-items: center;
  background: var(--bg-elev); color: var(--fg-muted);
  border: 1px solid var(--border-strong); box-shadow: var(--shadow-md);
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: opacity .2s ease, transform .2s ease, visibility .2s ease;
}
.to-top svg { width: 18px; height: 18px; }
.to-top.show { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { color: var(--fg); }

/* ---------- Reveal ---------------------------------------------------- */
.has-js .reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease; }
.has-js .reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .has-js .reveal { opacity: 1; transform: none; transition: none; }
  .orbit-spin, .orbit-nodes circle, .badge-live .dot { animation: none; }
  .btn:hover, .card:hover { transform: none; }
}

/* ---------- Responsive ------------------------------------------------ */
@media (max-width: 1180px) {
  .site-nav a { padding: .5rem .42rem; font-size: .86rem; }
  .brand-text small { display: none; }
}

@media (max-width: 1080px) {
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .step:nth-child(2)::after { display: none; }
}

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  /* Zuerst die Aussage, dann das Bild — die Überschrift soll nicht unter die
     Grafik rutschen. */
  .hero-art { max-width: 300px; margin: .5rem auto 0; }
  .cards-4, .cards-3, .cards-2, .code-grid, .open-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .split { grid-template-columns: 1fr; }
  .cta-panel { grid-template-columns: 1fr; }
  .relief-list { grid-template-columns: 1fr; }
}

@media (max-width: 980px) {
  body { font-size: 16px; }
  .hide-sm { display: none; }
  .burger {
    display: inline-grid; place-items: center;
    width: 36px; height: 36px; padding: 0; cursor: pointer;
    background: var(--bg-sunken); border: 1px solid var(--border);
    border-radius: 10px; color: var(--fg);
  }
  .burger span, .burger span::before, .burger span::after {
    display: block; width: 17px; height: 2px; border-radius: 2px; background: currentColor;
    transition: transform .2s ease, opacity .2s ease;
  }
  .burger span { position: relative; }
  .burger span::before, .burger span::after { content: ""; position: absolute; left: 0; }
  .burger span::before { top: -5px; }
  .burger span::after  { top: 5px; }
  .burger[aria-expanded="true"] span { background: transparent; }
  .burger[aria-expanded="true"] span::before { transform: translateY(5px) rotate(45deg); }
  .burger[aria-expanded="true"] span::after  { transform: translateY(-5px) rotate(-45deg); }

  .site-nav {
    position: fixed; inset: 68px 0 auto; margin: 0;
    display: grid; gap: .1rem;
    background: var(--bg-elev); border-bottom: 1px solid var(--border);
    padding: .8rem clamp(1.1rem, 4vw, 2rem) 1.2rem;
    box-shadow: var(--shadow-lg);
    transform: translateY(-8px); opacity: 0; visibility: hidden;
    transition: opacity .18s ease, transform .18s ease, visibility .18s ease;
  }
  .site-nav.open { transform: none; opacity: 1; visibility: visible; }
  .site-nav a { padding: .7rem .6rem; font-size: 1rem; }
  .site-nav a.active::after { display: none; }
  .site-nav a.active { background: var(--bg-sunken); }
  .site-nav .nav-cta {
    display: block; margin-top: .6rem; text-align: center;
    background: var(--grad); color: #fff; font-weight: 600;
    border-radius: 999px; padding: .8rem 1rem;
  }
  .site-nav .nav-cta:hover { background: var(--grad); color: #fff; }
}

@media (max-width: 620px) {
  .cards-4, .cards-3, .cards-2, .code-grid, .open-list, .steps { grid-template-columns: 1fr; }
  .step { padding-top: 0; padding-left: 3.2rem; }
  .step::after { display: none; }
  .step-num { top: -.1rem; }
  .hero-facts { gap: .8rem 1.4rem; }
  .contact-card dl { grid-template-columns: 1fr; gap: .1rem; }
  .contact-card dd { margin-bottom: .5rem; }
}