/* Spülsignal: mobile-first, ohne Webfonts */
:root {
  --ink: #10212f;
  --ink-2: #3c4e5c;
  --muted: #5d6e7b;
  --line: #dbe3e8;
  --bg: #ffffff;
  --bg-soft: #f3f7f9;
  --brand: #0b6e78;
  --brand-dark: #08525a;
  --brand-soft: #e3f3f4;
  --signal: #f0a400;
  --signal-soft: #fff5dc;
  --warn: #b3261e;
  --warn-soft: #fdeceb;
  --radius: 10px;
  --max: 1160px;
  --read: 720px;
  --s1: #2a78d6; --s2: #eb6834; --s3: #1baf7a; --s4: #eda100; --s5: #e87ba4;
  color-scheme: light;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; color: var(--ink); background: var(--bg);
  font: 17px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
img, svg { max-width: 100%; height: auto; }
a { color: var(--brand); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--brand-dark); text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--signal); outline-offset: 2px; border-radius: 4px; }
h1, h2, h3 { line-height: 1.25; letter-spacing: -0.01em; color: var(--ink); }
h1 { font-size: clamp(1.75rem, 1.2rem + 2.4vw, 2.6rem); margin: 0.3em 0 0.4em; }
h2 { font-size: clamp(1.3rem, 1.1rem + 0.9vw, 1.65rem); margin: 2em 0 0.6em; scroll-margin-top: 80px; }
h3 { font-size: 1.15rem; margin: 1.6em 0 0.4em; scroll-margin-top: 80px; }
p, ul, ol { margin: 0 0 1em; }
li { margin: 0.25em 0; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 18px; }
.skip { position: absolute; left: -999px; top: 0; background: var(--ink); color: #fff; padding: 10px 14px; z-index: 100; }
.skip:focus { left: 8px; top: 8px; }
.small { font-size: 0.9rem; color: var(--muted); }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: #fff; border-bottom: 1px solid var(--line); }
.hdr { display: flex; align-items: center; gap: 12px; min-height: 60px; }
.logo { display: flex; align-items: center; gap: 9px; text-decoration: none; color: var(--ink); font-weight: 750; font-size: 1.15rem; letter-spacing: -0.02em; margin-right: auto; }
.logo svg { width: 30px; height: 30px; flex: none; }
.logo:hover { color: var(--ink); }
.nav-menu { position: static; }
.nav-menu > summary { list-style: none; cursor: pointer; padding: 8px 12px; border: 1px solid var(--line); border-radius: 8px; font-weight: 600; font-size: 0.95rem; user-select: none; }
.nav-menu > summary::-webkit-details-marker { display: none; }
.nav-menu[open] > summary { background: var(--bg-soft); }
.nav-panel { position: absolute; left: 0; right: 0; top: 100%; background: #fff; border-bottom: 1px solid var(--line); box-shadow: 0 12px 24px rgba(16,33,47,0.08); max-height: calc(100vh - 60px); overflow: auto; }
.nav-grid { display: grid; grid-template-columns: 1fr; gap: 4px 24px; padding: 14px 18px 20px; max-width: var(--max); margin: 0 auto; }
.nav-grid a { display: block; padding: 9px 4px; text-decoration: none; color: var(--ink); border-bottom: 1px solid var(--bg-soft); }
.nav-grid a span { display: block; font-size: 0.85rem; color: var(--muted); }
.nav-grid a:hover strong { color: var(--brand); }
.hdr-search { display: none; }
.btn.hdr-cta { display: none; }
@media (min-width: 720px) {
  .nav-grid { grid-template-columns: repeat(3, 1fr); }
  .hdr-search { display: flex; }
  .hdr-search input { width: 190px; padding: 7px 10px; border: 1px solid var(--line); border-radius: 8px; font: inherit; font-size: 0.95rem; }
}
@media (min-width: 960px) { .btn.hdr-cta { display: inline-block; } }

/* Buttons */
.btn { display: inline-block; background: var(--brand); color: #fff; text-decoration: none; padding: 10px 18px; border-radius: 8px; font-weight: 650; border: 0; cursor: pointer; font: inherit; font-weight: 650; }
.btn:hover { background: var(--brand-dark); color: #fff; }
.btn-ghost { background: transparent; color: var(--brand); border: 1px solid var(--brand); }
.btn-ghost:hover { background: var(--brand-soft); color: var(--brand-dark); }
.link-btn { background: none; border: 0; color: var(--brand); text-decoration: underline; cursor: pointer; font: inherit; padding: 4px 0; margin-right: 12px; }

/* Breadcrumbs */
.crumbs { font-size: 0.88rem; color: var(--muted); margin: 18px 0 0; }
.crumbs ol { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 4px; }
.crumbs li { margin: 0; }
.crumbs li + li::before { content: "›"; margin-right: 4px; color: #9aa9b4; }
.crumbs a { color: var(--muted); }

/* Article layout */
.layout { display: grid; grid-template-columns: minmax(0, 1fr); gap: 32px; padding-bottom: 48px; }
@media (min-width: 1000px) { .layout { grid-template-columns: minmax(0, var(--read)) 300px; justify-content: space-between; } }
.article-head { max-width: var(--read); }
.meta { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 0.9rem; color: var(--muted); margin-bottom: 18px; }
.meta a { color: var(--muted); }
.lead { font-size: 1.12rem; color: var(--ink-2); }
.answer { background: var(--brand-soft); border-left: 4px solid var(--brand); padding: 16px 18px; border-radius: 0 var(--radius) var(--radius) 0; margin: 0 0 24px; }
.answer h2 { margin: 0 0 6px; font-size: 1rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--brand-dark); }
.answer p { margin: 0; }
.toc { border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 16px; margin: 0 0 24px; background: #fff; }
.toc summary { cursor: pointer; font-weight: 650; }
.toc ol { margin: 10px 0 0; padding-left: 20px; font-size: 0.95rem; }
.prose table { border-collapse: collapse; width: 100%; font-size: 0.93rem; }
.table-wrap { overflow-x: auto; margin: 0 0 1.4em; border: 1px solid var(--line); border-radius: var(--radius); -webkit-overflow-scrolling: touch; }
th, td { text-align: left; vertical-align: top; padding: 9px 12px; border-bottom: 1px solid var(--line); }
th { background: var(--bg-soft); font-weight: 650; white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }
.callout { border-radius: var(--radius); padding: 14px 16px; margin: 0 0 1.4em; border: 1px solid var(--line); background: var(--bg-soft); }
.callout p:last-child { margin-bottom: 0; }
.callout-tip { background: var(--brand-soft); border-color: #bfe2e5; }
.callout-warn { background: var(--warn-soft); border-color: #f3c7c4; }
.callout-insight { background: var(--signal-soft); border-color: #f4dc9e; }
.callout-insight strong:first-child::before { content: ""; display: inline-block; width: 10px; height: 10px; border-radius: 50%; background: var(--signal); margin-right: 7px; vertical-align: 1px; }
ul.checklist { list-style: none; padding-left: 0; }
ul.checklist li { position: relative; padding-left: 30px; }
ul.checklist li::before { content: ""; position: absolute; left: 2px; top: 0.3em; width: 17px; height: 17px; border: 2px solid var(--brand); border-radius: 4px; }
ol.steps { list-style: none; counter-reset: st; padding-left: 0; }
ol.steps > li { counter-increment: st; position: relative; padding-left: 42px; margin-bottom: 0.8em; }
ol.steps > li::before { content: counter(st); position: absolute; left: 0; top: 0; width: 28px; height: 28px; border-radius: 50%; background: var(--brand); color: #fff; font-weight: 700; font-size: 0.9rem; display: flex; align-items: center; justify-content: center; }
.faq details { border-bottom: 1px solid var(--line); padding: 12px 0; }
.faq summary { cursor: pointer; font-weight: 650; }
.faq details p { margin: 8px 0 0; }
.sources { font-size: 0.92rem; color: var(--ink-2); background: var(--bg-soft); border-radius: var(--radius); padding: 14px 18px; margin-top: 28px; }
.sources h2 { font-size: 1rem; margin: 0 0 8px; }
.sources ul { margin: 0; padding-left: 18px; }
.trust-box { font-size: 0.9rem; border-top: 1px solid var(--line); margin-top: 28px; padding-top: 16px; color: var(--ink-2); }

/* Sidebar */
.sidebar { font-size: 0.95rem; }
.side-box { border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; margin-bottom: 18px; }
.side-box h2 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); margin: 0 0 8px; }
.side-box ul { list-style: none; margin: 0; padding: 0; }
.side-box li { margin: 0; }
.side-box a { display: block; padding: 6px 0; text-decoration: none; border-bottom: 1px solid var(--bg-soft); color: var(--ink); }
.side-box a[aria-current="page"] { color: var(--brand); font-weight: 650; }
.side-box a:hover { color: var(--brand); }
@media (min-width: 1000px) { .sidebar-sticky { position: sticky; top: 80px; } }

/* Cards */
.card-list { list-style: none; padding: 0; margin: 0 0 1.5em; display: grid; gap: 12px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .card-list { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .card-list.three { grid-template-columns: repeat(3, 1fr); } }
.card-list li { margin: 0; }
.card { display: flex; flex-direction: column; height: 100%; border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; text-decoration: none; color: var(--ink); background: #fff; transition: border-color 0.15s, box-shadow 0.15s; }
.card:hover { border-color: var(--brand); box-shadow: 0 4px 14px rgba(11,110,120,0.1); color: var(--ink); }
.card-kicker { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--brand); font-weight: 650; }
.card-title { font-weight: 700; font-size: 1.05rem; line-height: 1.3; margin: 2px 0 6px; }
.card-text { font-size: 0.93rem; color: var(--ink-2); }
.card .ico { width: 34px; height: 34px; color: var(--brand); margin-bottom: 8px; }

/* Home */
.hero { background: linear-gradient(160deg, #0d2e3d 0%, #0b5c66 100%); color: #fff; padding: 44px 0 40px; }
.hero h1 { color: #fff; max-width: 820px; }
.hero p { color: #d8eef0; max-width: 700px; font-size: 1.12rem; }
.hero .kicker { color: var(--signal); font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; font-size: 0.82rem; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 20px 0 0; }
.chips li { margin: 0; }
.chips a { display: inline-block; padding: 8px 13px; border-radius: 999px; background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.28); color: #fff; text-decoration: none; font-size: 0.93rem; }
.chips a:hover { background: rgba(255,255,255,0.2); color: #fff; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.hero .btn { background: var(--signal); color: #1a1300; }
.hero .btn:hover { background: #ffb81f; color: #1a1300; }
.hero .btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,0.6); }
.section { padding: 40px 0; }
.section-alt { background: var(--bg-soft); }
.section h2 { margin-top: 0; }
.section-lead { color: var(--ink-2); max-width: 760px; }
.signals { display: grid; gap: 12px; grid-template-columns: 1fr; list-style: none; padding: 0; }
@media (min-width: 700px) { .signals { grid-template-columns: repeat(5, 1fr); } }
.signals li { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; margin: 0; }
.signals strong { display: block; color: var(--brand-dark); }
.signals span { font-size: 0.9rem; color: var(--ink-2); }

/* Tools */
.tool { border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; margin: 0 0 24px; background: #fff; }
.tool form { display: grid; gap: 12px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .tool form { grid-template-columns: repeat(2, 1fr); } }
.tool label { display: flex; flex-direction: column; font-size: 0.9rem; font-weight: 600; gap: 4px; }
.tool label small { font-weight: 400; color: var(--muted); }
.tool input, .tool select { font: inherit; padding: 9px 10px; border: 1px solid #b9c6cf; border-radius: 8px; background: #fff; min-height: 44px; }
.tool .full { grid-column: 1 / -1; }
.tool-out { margin-top: 18px; }
.kpis { display: grid; gap: 10px; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); margin-bottom: 16px; }
.kpi { background: var(--bg-soft); border-radius: var(--radius); padding: 12px 14px; }
.kpi span { display: block; font-size: 0.82rem; color: var(--muted); }
.kpi strong { font-size: 1.3rem; }
.stack { display: flex; height: 22px; border-radius: 4px; overflow: hidden; margin: 6px 0 10px; background: var(--bg-soft); }
.stack .seg { display: block; height: 100%; border-right: 2px solid #fff; }
.stack .seg:last-child { border-right: 0; }
.s1 { background: var(--s1); } .s2 { background: var(--s2); } .s3 { background: var(--s3); } .s4 { background: var(--s4); } .s5 { background: var(--s5); }
.legend { list-style: none; padding: 0; margin: 0 0 14px; display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 0.88rem; color: var(--ink-2); }
.legend li { margin: 0; display: flex; align-items: center; gap: 6px; }
.legend .sw { width: 12px; height: 12px; border-radius: 3px; display: inline-block; }
.bench-row { margin-bottom: 18px; }
.bench-row h3 { margin: 0 0 4px; font-size: 1rem; }
.diag { outline: none; }
.diag-step { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--brand); font-weight: 700; margin: 0; }
.diag-q { margin: 4px 0 14px; }
.diag-opts { display: grid; gap: 8px; }
.opt { text-align: left; font: inherit; padding: 13px 16px; border: 1px solid #b9c6cf; border-radius: var(--radius); background: #fff; cursor: pointer; color: var(--ink); min-height: 48px; }
.opt:hover { border-color: var(--brand); background: var(--brand-soft); }
.protocol h2 { margin-top: 0; }
.proto-meta { display: flex; flex-wrap: wrap; gap: 6px 22px; font-size: 0.92rem; }
.proto-table td { height: 26px; }
.proto-foot { font-size: 0.85rem; }

/* Glossar */
.glossary dt { font-weight: 700; margin-top: 18px; scroll-margin-top: 80px; }
.glossary dd { margin: 4px 0 0; color: var(--ink-2); }
.az { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; padding: 0; }
.az a { display: inline-block; min-width: 34px; text-align: center; padding: 6px; border: 1px solid var(--line); border-radius: 6px; text-decoration: none; }

/* Footer */
.site-footer { background: #0d2230; color: #c4d2db; padding: 40px 0 28px; font-size: 0.93rem; margin-top: 20px; }
.site-footer a { color: #e3edf2; text-decoration: none; }
.site-footer a:hover { text-decoration: underline; color: #fff; }
.foot-grid { display: grid; gap: 24px; grid-template-columns: 1fr 1fr; }
@media (min-width: 860px) { .foot-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; } }
.foot-grid h2 { color: #fff; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.07em; margin: 0 0 10px; }
.foot-grid ul { list-style: none; padding: 0; margin: 0; }
.foot-grid li { margin: 0 0 6px; }
.foot-note { border-top: 1px solid #23394a; margin-top: 28px; padding-top: 16px; font-size: 0.85rem; color: #93a8b5; }

@media print {
  .site-header, .site-footer, .crumbs, .sidebar, .no-print, .tool form, .tool-intro, .prose-after { display: none !important; }
  body { font-size: 11pt; }
  .tool { border: 0; padding: 0; }
  .protocol .table-wrap { border: 0; overflow: visible; }
  .proto-table th, .proto-table td { border: 1px solid #999; padding: 3px 5px; font-size: 9pt; }
  .proto-table td { height: 20px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }