:root {
  color-scheme: dark;
  --ink: #f4f4e9;
  --muted: #9ca9a1;
  --ground: #07130f;
  --panel: #0d1d17;
  --panel-2: #13271f;
  --line: #294037;
  --sun: #f4b942;
  --leaf: #5bd49b;
  --sky: #72b7d2;
  --coral: #ed806c;
  --radius: 24px;

  /* Diagrammfarben. Getrennt von den Markenfarben, weil sie gegen den dunklen
     Grund #0d1d17 auf Helligkeitsband, Chroma, Farbfehlsichtigkeit, normale
     Unterscheidbarkeit und Kontrast geprueft sind. Die fruehere Kombination aus
     --leaf und --sky lag bei Delta E 13.3 und war auch fuer normalsichtige
     Leser kaum zu trennen. */
  --series-fusion: #d95926;
  --series-ai: #199e70;
  --series-gti: #3987e5;
  --series-actual: #e6e9df;
  --seq-1: #86b6ef;
  --seq-2: #5598e7;
  --seq-3: #3987e5;
  --seq-4: #256abf;
  --seq-5: #184f95;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--ground); color: var(--ink); font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.55; }
a { color: inherit; }
.site-header { max-width: 1240px; margin: auto; min-height: 84px; padding: 20px 28px; display: flex; align-items: center; justify-content: space-between; gap: 24px; border-bottom: 1px solid var(--line); }
.brand { display: flex; gap: 12px; align-items: center; text-decoration: none; font-weight: 650; letter-spacing: -.02em; }
.brand-mark { display: grid; place-items: center; width: 40px; height: 40px; border: 1px solid #557066; border-radius: 50%; color: var(--sun); font-family: Georgia, serif; }
nav { display: flex; gap: 28px; }
nav a { text-decoration: none; color: var(--muted); font-size: .92rem; }
nav a:hover, nav a[aria-current="page"] { color: var(--ink); }
main { max-width: 1240px; margin: auto; padding: 0 28px 80px; }
.hero { min-height: 440px; display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(240px, .5fr); align-items: center; gap: 40px; padding: 78px 0 54px; overflow: hidden; }
.eyebrow { margin: 0 0 12px; color: var(--leaf); font-size: .72rem; font-weight: 750; text-transform: uppercase; letter-spacing: .17em; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 900px; margin-bottom: 26px; font-family: Georgia, "Times New Roman", serif; font-size: clamp(3.1rem, 7vw, 6.7rem); line-height: .93; letter-spacing: -.055em; font-weight: 400; }
h1 em { color: var(--sun); font-weight: 400; }
h2 { margin-bottom: 10px; font-family: Georgia, "Times New Roman", serif; font-size: clamp(1.65rem, 3vw, 2.35rem); line-height: 1.08; font-weight: 400; }
.lede { max-width: 730px; color: #c5cec8; font-size: clamp(1.05rem, 2vw, 1.3rem); }
.sun-orbit { position: relative; width: min(26vw, 290px); aspect-ratio: 1; justify-self: end; border: 1px solid #385147; border-radius: 50%; }
.sun-orbit::before, .sun-orbit::after { content: ""; position: absolute; inset: 16%; border: 1px solid #29443a; border-radius: 50%; }
.sun-orbit::after { inset: 32%; }
.sun-orbit span { position: absolute; left: 50%; top: 50%; width: 29%; aspect-ratio: 1; translate: -50% -50%; background: var(--sun); border-radius: 50%; box-shadow: 0 0 70px #f4b94255; }
.status { margin: 0 0 20px; padding: 11px 16px; border: 1px solid var(--line); border-radius: 12px; color: var(--muted); font-size: .88rem; }
.status.ready { display: none; }
.status.error { border-color: #743e36; color: #ffb5a8; background: #321813; }
.today-grid { display: grid; grid-template-columns: 1.45fr 1fr; gap: 20px; margin-bottom: 20px; }
.today-card, .panel { border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.today-card { min-height: 315px; padding: clamp(24px, 4vw, 44px); }
.today-card.primary { background: linear-gradient(135deg, #193629, #10231b); }
.today-card.actual { background: linear-gradient(145deg, #161f1b, #0b1914); }
.card-heading, .section-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; }
.badge { padding: 8px 11px; border: 1px solid #6d8179; border-radius: 999px; font-size: .72rem; letter-spacing: .14em; }
.hero-value { margin: 26px 0 4px; font-variant-numeric: tabular-nums; }
.hero-value strong { font-family: Georgia, serif; font-size: clamp(4.3rem, 9vw, 7.2rem); line-height: .8; font-weight: 400; }
.hero-value span { color: var(--muted); font-size: 1.1rem; }
.interval, .updated, .muted, .fineprint { color: var(--muted); }
.interval { min-height: 1.5em; }
.updated { margin-top: 48px; font-size: .86rem; }
.meter { height: 4px; margin: 30px 0 13px; overflow: hidden; border-radius: 10px; background: #284137; }
.meter span { display: block; height: 100%; width: 0; background: var(--sun); transition: width .7s ease; }
.fineprint { margin-bottom: 0; font-size: .78rem; }
.live-dot { width: 10px; height: 10px; margin-top: 7px; border-radius: 50%; background: var(--leaf); box-shadow: 0 0 0 6px #5bd49b19; }
.panel { margin-bottom: 20px; padding: clamp(24px, 4vw, 40px); }
.legend { display: flex; flex-wrap: wrap; gap: 18px; padding-top: 9px; color: var(--muted); font-size: .78rem; }
.legend span::before { content: ""; display: inline-block; width: 14px; height: 3px; margin-right: 7px; vertical-align: middle; border-radius: 3px; background: currentColor; }
.fusion-key { color: var(--series-fusion); }.ai-key { color: var(--series-ai); }
.gti-key { color: var(--series-gti); }.actual-key { color: var(--series-actual); }
.forecast-days { display: grid; grid-template-columns: repeat(7, 1fr); gap: 8px; margin: 34px 0 24px; }
.day { padding: 15px 10px; border-left: 1px solid var(--line); }
.day:first-child { border-left: 0; }
.day time { display: block; color: var(--muted); font-size: .76rem; text-transform: uppercase; }
.day strong { display: block; margin-top: 5px; font-family: Georgia, serif; font-size: 1.55rem; font-weight: 400; }
.day small { color: var(--muted); }
.chart-shell { width: 100%; height: 330px; }
.chart-shell svg { display: block; width: 100%; height: 100%; overflow: visible; }
.chart-shell text { fill: var(--muted); font: 11px Inter, sans-serif; }
.chart-shell .grid-line { stroke: var(--line); stroke-width: 1; vector-effect: non-scaling-stroke; }
.chart-shell .plot-line { fill: none; stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; vector-effect: non-scaling-stroke; }
.chart-shell .actual-area { fill: url(#actualGradient); }
.chart-shell .point { stroke: var(--panel); stroke-width: 2; vector-effect: non-scaling-stroke; }
.split { display: grid; grid-template-columns: 1.2fr .8fr; gap: 20px; }
.metric-rows { margin-top: 30px; }
.metric-row { display: grid; grid-template-columns: 80px 1fr 90px; align-items: center; gap: 14px; margin: 17px 0; }
.metric-bar { height: 8px; overflow: hidden; border-radius: 8px; background: #243b32; }
.metric-bar span { display: block; height: 100%; border-radius: inherit; }
.metric-row strong { text-align: right; font-variant-numeric: tabular-nums; }
.model-facts { margin: 24px 0 30px; }
.model-facts div { display: flex; justify-content: space-between; gap: 30px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.model-facts dt { color: var(--muted); }.model-facts dd { margin: 0; text-align: right; }
.text-link { display: inline-block; margin-top: 15px; color: var(--leaf); text-decoration: none; border-bottom: 1px solid #5bd49b66; }
.range-control { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: .8rem; }
select { color: var(--ink); background: #10231b; border: 1px solid var(--line); border-radius: 8px; padding: 7px 10px; }
footer { max-width: 1240px; margin: auto; padding: 30px 28px 45px; display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: .8rem; }
footer p { margin: 0; }
.article-main { padding-bottom: 90px; }
.article-hero { max-width: 980px; padding: 110px 0 70px; }
.method-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.method-grid .panel { min-height: 270px; }
.method-grid p, .prose p, .limits p { color: #b9c5be; }
.step { display: block; margin-bottom: 42px; color: var(--sun); font-family: Georgia, serif; font-size: 1.1rem; }
.prose { margin-top: 20px; }
.prose-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 45px; margin-top: 35px; }
.prose h3 { margin-bottom: 5px; font-size: 1rem; }
.limits { max-width: 800px; margin: 90px 0 20px; }
.limits h2 { font-size: clamp(2.2rem, 5vw, 4rem); }
.limits p { font-size: 1.12rem; }

@media (max-width: 800px) {
  .site-header { align-items: flex-start; }
  .brand span:last-child { display: none; }
  nav { gap: 16px; }
  main { padding-inline: 18px; }
  .hero { min-height: auto; grid-template-columns: 1fr; padding-top: 70px; }
  .sun-orbit { display: none; }
  .today-grid, .split, .method-grid, .prose-columns { grid-template-columns: 1fr; }
  .forecast-days { grid-template-columns: repeat(4, 1fr); }
  .day:nth-child(5) { border-left: 0; }
  .chart-shell { height: 260px; }
  footer { flex-direction: column; padding-inline: 18px; }
}

@media (max-width: 520px) {
  h1 { font-size: 3.4rem; }
  .site-header { padding-inline: 18px; }
  nav a { font-size: .82rem; }
  .forecast-days { grid-template-columns: repeat(2, 1fr); }
  .day:nth-child(odd) { border-left: 0; }
  .section-heading { flex-direction: column; }
  .metric-row { grid-template-columns: 64px 1fr 72px; font-size: .86rem; }
}

@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; transition: none !important; } }

/* ---------- Sprachumschalter ---------- */
.lang-switch { display: flex; gap: 2px; padding: 3px; border: 1px solid var(--line); border-radius: 999px; }
.lang-switch button {
  min-width: 38px; padding: 5px 10px; border: 0; border-radius: 999px; cursor: pointer;
  background: transparent; color: var(--muted); font: inherit; font-size: .78rem; letter-spacing: .06em;
}
.lang-switch button[aria-pressed="true"] { background: var(--panel-2); color: var(--ink); }
.lang-switch button:hover { color: var(--ink); }
.header-tools { display: flex; align-items: center; gap: 22px; }

/* ---------- Diagramme ---------- */
.chart-figure { margin: 0; }
.chart-figure figcaption { margin-top: 10px; color: var(--muted); font-size: .78rem; }
.chart-shell.tall { height: 380px; }
.chart-shell.short { height: 240px; }
.chart-shell .bar { rx: 4; ry: 4; }
.chart-shell .axis-line { stroke: var(--line); stroke-width: 1; vector-effect: non-scaling-stroke; }
.chart-shell .hover-band { fill: transparent; }
.chart-shell .crosshair { stroke: #6d8179; stroke-width: 1; stroke-dasharray: 3 3; vector-effect: non-scaling-stroke; }
.chart-shell .value-label { font-size: 11px; font-variant-numeric: tabular-nums; }
.chart-shell .ring { stroke: var(--panel); stroke-width: 2; vector-effect: non-scaling-stroke; }
.chart-tooltip {
  position: fixed; z-index: 20; min-width: 130px; padding: 10px 12px; pointer-events: none;
  border: 1px solid var(--line); border-radius: 10px; background: #0a1712f2;
  box-shadow: 0 10px 30px #00000066; font-size: .8rem; line-height: 1.45;
}
.chart-tooltip[hidden] { display: none; }
.chart-tooltip .tt-title { margin-bottom: 5px; color: var(--muted); font-size: .74rem; }
.chart-tooltip dl { display: grid; grid-template-columns: auto auto; gap: 2px 14px; margin: 0; }
.chart-tooltip dt { color: var(--muted); }
.chart-tooltip dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; }
.chart-tooltip .swatch { display: inline-block; width: 9px; height: 9px; margin-right: 6px; border-radius: 2px; vertical-align: baseline; }

/* ---------- Statistikseite ---------- */
.stat-intro { max-width: 900px; padding: 96px 0 48px; }
.stat-section { margin-bottom: 22px; }
.stat-section > h2 { margin-bottom: 14px; }
.plain { max-width: 780px; color: #c5cec8; font-size: 1.04rem; }
details.deep { margin-top: 18px; border-top: 1px solid var(--line); }
details.deep > summary {
  padding: 14px 0 0; color: var(--leaf); font-size: .85rem; cursor: pointer; list-style: none;
}
details.deep > summary::-webkit-details-marker { display: none; }
details.deep > summary::before { content: "+ "; font-family: Georgia, serif; }
details.deep[open] > summary::before { content: "– "; }
details.deep .deep-body { padding-top: 12px; color: #b9c5be; font-size: .93rem; }
details.deep .deep-body p { max-width: 820px; }
.formula {
  display: block; margin: 12px 0; padding: 12px 14px; overflow-x: auto;
  border-left: 2px solid var(--series-gti); background: #0a1712;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .84rem; color: #d6ded8;
}
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 14px; margin: 26px 0 8px; }
.kpi { padding: 18px 20px; border: 1px solid var(--line); border-radius: 16px; background: var(--panel-2); }
.kpi dt { margin-bottom: 8px; color: var(--muted); font-size: .76rem; }
.kpi dd { margin: 0; font-family: Georgia, serif; font-size: 1.75rem; line-height: 1; font-variant-numeric: tabular-nums; }
.kpi .kpi-unit { color: var(--muted); font-family: Inter, sans-serif; font-size: .9rem; }
.data-table { width: 100%; margin-top: 22px; border-collapse: collapse; font-size: .88rem; }
.data-table caption { margin-bottom: 10px; color: var(--muted); font-size: .78rem; text-align: left; }
.data-table th, .data-table td { padding: 9px 10px; border-bottom: 1px solid var(--line); text-align: right; }
.data-table th:first-child, .data-table td:first-child { text-align: left; }
.data-table thead th { color: var(--muted); font-weight: 500; font-size: .78rem; }
.data-table td { font-variant-numeric: tabular-nums; }
.swatch { display: inline-block; width: 10px; height: 10px; margin-right: 8px; border-radius: 2px; vertical-align: baseline; }
.toc { display: flex; flex-wrap: wrap; gap: 10px 20px; margin: 30px 0 0; padding: 0; list-style: none; }
.toc a { color: var(--muted); font-size: .85rem; text-decoration: none; border-bottom: 1px solid transparent; }
.toc a:hover { color: var(--ink); border-bottom-color: #5bd49b66; }
.source-list { margin: 22px 0 0; padding: 0; list-style: none; }
.source-list li { padding: 13px 0; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 200px 1fr; gap: 18px; }
.source-list strong { font-weight: 550; }
.source-list span { color: #b9c5be; font-size: .92rem; }

@media (max-width: 800px) {
  .header-tools { gap: 12px; }
  .source-list li { grid-template-columns: 1fr; gap: 4px; }
  .stat-intro { padding-top: 64px; }
  .data-table { font-size: .8rem; }
  .data-table th, .data-table td { padding: 7px 6px; }
}

/* Kopfzeile auf schmalen Schirmen: Navigation und Sprachumschalter bekommen
   eine eigene Zeile, sonst laeuft die Kopfzeile bei 390 px ueber. */
@media (max-width: 800px) {
  .site-header { flex-wrap: wrap; row-gap: 12px; }
  .header-tools { flex: 1 1 100%; justify-content: space-between; gap: 12px; }
  nav { flex-wrap: wrap; gap: 18px; }
}
@media (max-width: 520px) {
  nav { gap: 14px; }
  .lang-switch button { min-width: 32px; padding: 4px 8px; font-size: .72rem; }
}

/* Prognose-Zusammenfassung: alles, was den heutigen Wert erklaert, in einem
   Blick. Die Balken teilen sich eine Skala, damit die vier Schaetzungen und
   der Istwert unmittelbar vergleichbar sind. */
.summary-progress { margin: 2px 0 28px; }
.summary-progress-head { display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; margin: 0 0 10px; font-size: .9rem; }
.summary-progress-head strong { font-variant-numeric: tabular-nums; }
.summary-track { position: relative; height: 14px; border-radius: 8px; background: #243b32; }
.summary-band { position: absolute; top: 0; bottom: 0; border-radius: 3px; background: rgba(217, 89, 38, .25); }
.summary-fill { position: absolute; top: 0; bottom: 0; left: 0; border-radius: 8px 0 0 8px; background: var(--series-actual); }
.summary-marker { position: absolute; top: -4px; bottom: -4px; width: 3px; border-radius: 2px; background: var(--series-fusion); }
.summary-rows { margin-top: 4px; }
.summary-rows .metric-row { grid-template-columns: 108px 1fr 96px; }
.summary-rows .metric-row.is-primary span:first-child,
.summary-rows .metric-row.is-primary strong { color: var(--ink); font-weight: 700; }
.summary-equation { margin: 24px 0 8px; font-size: .84rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.summary-state strong { color: var(--ink); font-variant-numeric: tabular-nums; }
@media (max-width: 620px) {
  .summary-rows .metric-row { grid-template-columns: 82px 1fr 80px; }
  .summary-equation { font-size: .78rem; }
}
.summary-track-key { margin: 10px 0 0; color: var(--muted); }