/* Fibersphere Core: Messprotokoll-Welt
   Farben, Schriften und Abstände stehen als Variablen auf :root.
   Werte, die im Regler-Panel (Phase 6) verschoben werden können, tragen das Präfix --t-. */

@font-face {
  font-family: "Archivo";
  src: url("/assets/fonts/archivo-latin-wdth-normal.woff2") format("woff2-variations");
  font-weight: 100 900;
  font-stretch: 62% 125%;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Literata";
  src: url("/assets/fonts/literata-latin-opsz-normal.woff2") format("woff2-variations");
  font-weight: 200 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Literata";
  src: url("/assets/fonts/literata-latin-opsz-italic.woff2") format("woff2-variations");
  font-weight: 200 900;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: "Martian Mono";
  src: url("/assets/fonts/martian-mono-latin-wght-normal.woff2") format("woff2-variations");
  font-weight: 100 800;
  font-style: normal;
  font-display: swap;
}

:root {
  /* Messpapier */
  --paper: #e8e9e5;
  --paper-deep: #dcded9;
  --grid: #cdd0ca;
  --ink: #1a1918;
  --ink-soft: #3d3a36;
  --dim: #5c5953;
  --rule: #1a1918;
  /* Kurve und Marke */
  --trace: #6e5d4f;
  --taupe: #988575;
  --taupe-deep: #74624f;
  /* Geräte-Bühne */
  --stage: #141312;
  --stage-line: #3a3632;
  --on-stage: #ece7df;
  --on-stage-dim: #b1a99c;
  --taupe-on-stage: #bba895;

  --f-display: "Archivo", "Arial Narrow", sans-serif;
  --f-text: "Literata", Georgia, serif;
  --f-mono: "Martian Mono", ui-monospace, monospace;

  /* Regler (Phase 6) */
  --t-gutter: clamp(16px, 4vw, 48px);
  --t-max: 1440px;
  --t-h1: clamp(2.5rem, 5.6vw + 0.4rem, 5.25rem);
  --t-h1-stretch: 78%;
  --t-h2: clamp(2rem, 3.4vw + 0.5rem, 3.75rem);
  --t-body: 1.125rem;
  --t-read: 1.1875rem;
  --t-section-gap: clamp(4.5rem, 9vw, 8.5rem);
  --t-trace-h: clamp(180px, 27vh, 300px);
  --t-trace-gap: clamp(28px, 3vw, 40px);
  --t-lead: clamp(1.125rem, 0.6vw + 1rem, 1.3rem);
  --t-hero-top: clamp(1.75rem, 3.6vw, 3rem);

  --measure: 68ch;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 var(--t-body)/1.6 var(--f-text);
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg, video { display: block; max-width: 100%; }
h1, h2, h3, p, ul, ol, figure, blockquote { margin: 0; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 0.22em; }
a:hover { text-decoration-thickness: 2px; }
::selection { background: var(--taupe); color: #fff; }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; border-radius: 2px; }
.stage :focus-visible, .is-stage :focus-visible { outline-color: var(--on-stage); }
html { scrollbar-color: var(--taupe) var(--paper-deep); }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip { position: absolute; left: var(--t-gutter); top: -60px; z-index: 50; background: var(--ink); color: var(--paper); padding: 10px 16px; font: 600 15px var(--f-display); border-radius: 999px; text-decoration: none; }
.skip:focus { top: 12px; }

.wrap { width: 100%; max-width: var(--t-max); margin: 0 auto; padding: 0 var(--t-gutter); }

/* ---------- Kopf ---------- */
.site-head { border-bottom: 1px solid var(--rule); position: relative; z-index: 5; background: var(--paper); }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 84px; }
.brand { display: block; width: 168px; flex: none; color: var(--ink); }
.brand svg { width: 100%; height: auto; }
.nav ul { list-style: none; display: flex; gap: clamp(18px, 2.6vw, 38px); padding: 0; margin: 0; }
.nav a {
  font: 500 15px/1 var(--f-display); font-stretch: 92%; letter-spacing: 0.005em;
  text-decoration: none; color: var(--ink); padding: 10px 0; position: relative; display: inline-block;
}
.nav a::after { content: ""; position: absolute; left: 0; right: 0; bottom: 2px; height: 1px; background: currentColor; transform: scaleX(0); transform-origin: left; transition: transform 0.35s var(--ease); }
.nav a:hover::after, .nav a[aria-current="page"]::after { transform: scaleX(1); }
.nav a[aria-current="page"] { font-weight: 650; }

@media (max-width: 760px) {
  .site-head .wrap { flex-direction: column; align-items: flex-start; gap: 6px; padding-top: 16px; padding-bottom: 6px; min-height: 0; }
  .brand { width: 136px; }
  .nav { width: 100%; overflow-x: auto; scrollbar-width: none; }
  .nav::-webkit-scrollbar { display: none; }
  .nav ul { gap: 20px; }
  .nav a { font-size: 14.5px; padding: 12px 0; }
}

/* Dunkle Seiten (Videos) */
.is-stage { background: var(--stage); color: var(--on-stage); color-scheme: dark; }
.is-stage .site-head { background: var(--stage); border-color: var(--stage-line); }
.is-stage .brand, .is-stage .nav a { color: var(--on-stage); }

/* ---------- Schaltflächen ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font: 600 16px/1 var(--f-display); font-stretch: 95%;
  padding: 15px 24px; border-radius: 999px; border: 1.5px solid var(--ink);
  color: var(--ink); background: transparent; text-decoration: none; cursor: pointer;
  transition: background-color 0.25s var(--ease), color 0.25s var(--ease), transform 0.25s var(--ease);
}
.btn:hover { background: var(--ink); color: var(--paper); }
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--ink); color: var(--paper); }
.btn--primary:hover { background: var(--taupe-deep); border-color: var(--taupe-deep); color: #fff; }
.btn svg { width: 16px; height: 16px; }
.stage .btn, .is-stage .btn { border-color: var(--on-stage); color: var(--on-stage); }
.stage .btn:hover, .is-stage .btn:hover { background: var(--on-stage); color: var(--stage); }
.stage .btn--primary, .is-stage .btn--primary { background: var(--on-stage); color: var(--stage); }
.stage .btn--primary:hover, .is-stage .btn--primary:hover { background: var(--taupe-on-stage); border-color: var(--taupe-on-stage); color: var(--stage); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }

.link-arrow { font: 600 16px var(--f-display); font-stretch: 95%; text-decoration: none; display: inline-flex; align-items: center; gap: 8px; border-bottom: 1px solid currentColor; padding-bottom: 3px; }
.link-arrow svg { width: 15px; height: 15px; transition: transform 0.3s var(--ease); }
.link-arrow:hover svg { transform: translateX(4px); }

/* ---------- Typografie ---------- */
.h1 {
  font: 720 var(--t-h1)/0.98 var(--f-display); font-stretch: var(--t-h1-stretch);
  letter-spacing: -0.028em; text-wrap: balance;
}
.h2 {
  font: 700 var(--t-h2)/1.03 var(--f-display); font-stretch: 84%;
  letter-spacing: -0.022em; text-wrap: balance;
}
.h3 { font: 650 1.375rem/1.2 var(--f-display); font-stretch: 90%; letter-spacing: -0.01em; }
.lead { font-size: clamp(1.125rem, 0.6vw + 1rem, 1.3rem); line-height: 1.55; max-width: 36em; color: var(--ink-soft); }
.stage .lead, .is-stage .lead { color: var(--on-stage-dim); }
.mono { font-family: var(--f-mono); font-size: 0.75rem; letter-spacing: 0.01em; font-variant-numeric: tabular-nums; }
.dim { color: var(--dim); }

/* ---------- Startseite: erster Bildschirm ---------- */
.hero { position: relative; }
.hero__top { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(340px, 0.8fr); gap: clamp(32px, 5vw, 80px); padding-top: var(--t-hero-top); align-items: start; }
.hero__copy .lead { margin-top: 24px; font-size: var(--t-lead); }
.hero__copy .actions { margin-top: 30px; }

.events { background: var(--paper); border: 1px solid var(--rule); align-self: start; }
.events__head { display: flex; justify-content: space-between; padding: 11px 16px; border-bottom: 1px solid var(--rule); }
.events__head h2 { font: 650 0.9375rem/1.4 var(--f-display); font-stretch: 92%; margin: 0; }
.events ol { list-style: none; padding: 0; margin: 0; }
.events li + li { border-top: 1px solid var(--grid); }
.event-row {
  display: grid; grid-template-columns: 1.3em 7.4em minmax(0, 1fr) 16px; gap: 0 12px; align-items: baseline;
  padding: 10px 16px 11px; text-decoration: none; color: var(--ink);
  transition: background-color 0.2s var(--ease);
}
.event-row .num, .event-row .km { font: 400 0.75rem/1.5 var(--f-mono); font-variant-numeric: tabular-nums; white-space: nowrap; }
.event-row .what { display: grid; grid-template-columns: auto 1fr; gap: 0 10px; align-items: baseline; }
.event-row .what b { font: 650 1.0625rem/1.3 var(--f-display); font-stretch: 90%; }
.event-row .what small { font: italic 0.875rem/1.4 var(--f-text); color: var(--dim); grid-column: 1 / -1; }
.event-row .type { font: 400 0.75rem/1.5 var(--f-mono); color: var(--dim); grid-column: 1 / -1; }
.event-row svg { width: 16px; height: 16px; align-self: center; opacity: 0.35; transition: transform 0.3s var(--ease), opacity 0.3s; }
.event-row:hover, .event-row.is-active, .event-row:focus-visible { background: var(--paper-deep); }
.event-row:hover svg, .event-row.is-active svg, .event-row:focus-visible svg { opacity: 1; transform: translateX(3px); }

/* Messkurve */
.trace { position: relative; margin-top: var(--t-trace-gap); }
.plot { position: relative; height: var(--t-trace-h);
  background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: calc(100% / 13.5) 25%; background-position: 0 0; }
.plot svg.curve { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.trace .line { fill: none; stroke: var(--trace); stroke-width: 2.25; stroke-linejoin: round; vector-effect: non-scaling-stroke; }
.js .trace .line { stroke-dasharray: var(--len, 4000); stroke-dashoffset: var(--len, 4000); }
.js .trace.is-drawn .line { stroke-dashoffset: 0; transition: stroke-dashoffset 2.4s cubic-bezier(0.45, 0, 0.2, 1); }
@media (prefers-reduced-motion: reduce) { .js .trace .line { stroke-dashoffset: 0 !important; transition: none !important; } }

.marker { position: absolute; top: 0; bottom: 0; width: 0; border-left: 1px dashed var(--rule); text-decoration: none; color: var(--ink); }
.marker span {
  position: absolute; top: -2px; left: 7px; font: 500 0.75rem/1 var(--f-mono);
  background: var(--paper); padding: 4px 6px; border: 1px solid var(--rule); white-space: nowrap;
  transition: background-color 0.2s, color 0.2s;
}
.marker i { position: absolute; left: -5px; width: 9px; height: 9px; border-radius: 50%; background: var(--ink); transform: translateY(-4px); transition: transform 0.3s var(--ease), background-color 0.2s; }
.marker.is-active span { background: var(--ink); color: var(--paper); }
.marker.is-active i { transform: translateY(-4px) scale(1.6); background: var(--taupe-deep); }

.axis { position: relative; height: 34px; border-top: 1px solid var(--rule); }
.axis span { position: absolute; top: 8px; font: 400 0.75rem/1 var(--f-mono); color: var(--dim); padding-left: 4px; border-left: 1px solid var(--rule); height: 14px; }

/* Erklärung zur Messkurve, unter den Buttons */
.explain { margin-top: clamp(26px, 3vw, 36px); max-width: 34em; padding-top: 12px; border-top: 1px solid var(--rule); min-height: 5.2em; }
.explain p { font-size: 0.9688rem; line-height: 1.45; color: var(--ink-soft); }
.explain .mono { display: block; color: var(--dim); margin-bottom: 4px; font-size: 0.75rem; }
.hero .caption { font: italic 0.875rem/1.5 var(--f-text); color: var(--dim); padding: 6px 0 18px; text-align: right; }
@media (max-width: 980px) { .hero .caption { text-align: left; } }

@media (max-width: 980px) {
  .hero__top { grid-template-columns: 1fr; }
  .events { order: 3; }
}
@media (max-width: 760px) {
  .marker span { font-size: 0.75rem; padding: 3px 5px; left: 4px; }
  .axis span:nth-child(even) { display: none; }
  .event-row { grid-template-columns: 1.4em 5.8em 1fr; }
  .event-row svg { display: none; }
}

/* ---------- Abschnitte ---------- */
.section { padding: var(--t-section-gap) 0; }
.section--deep { background: var(--paper-deep); }
.section__head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 24px 64px; align-items: end; margin-bottom: clamp(36px, 5vw, 64px); }
.section__head p { color: var(--ink-soft); max-width: 40em; }
@media (max-width: 860px) { .section__head { grid-template-columns: 1fr; } }

/* Zwei Lesetiefen */
.depths { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.depth { padding: clamp(28px, 4vw, 48px) clamp(0px, 3vw, 40px) clamp(28px, 4vw, 48px) 0; display: grid; gap: 18px; align-content: start; }
.depth + .depth { border-left: 1px solid var(--rule); padding-left: clamp(20px, 3vw, 40px); }
.depth .mono { color: var(--dim); }
.depth p { max-width: 34em; }
@media (max-width: 760px) {
  .depths { grid-template-columns: 1fr; }
  .depth + .depth { border-left: 0; border-top: 1px solid var(--rule); padding-left: 0; }
}

/* Teile entlang einer Faser */
.parts { list-style: none; padding: 0; margin: 0; position: relative; }
.parts::before { content: ""; position: absolute; left: 7px; top: 22px; bottom: 22px; width: 2px; background: var(--trace); }
.part { position: relative; }
.part a {
  display: grid; grid-template-columns: 7.5rem minmax(0, 1fr) minmax(0, 1.1fr) 24px; gap: 8px 32px; align-items: baseline;
  padding: 22px 0 22px 40px; text-decoration: none; border-bottom: 1px solid var(--grid);
  transition: background-color 0.25s var(--ease);
}
.part:first-child a { border-top: 1px solid var(--grid); }
.part a::before { content: ""; position: absolute; left: 1px; top: 30px; width: 14px; height: 14px; border-radius: 50%; background: var(--paper); border: 2px solid var(--trace); transition: background-color 0.25s, transform 0.3s var(--ease); }
.section--deep .part a::before { background: var(--paper-deep); }
.part a:hover::before, .part a:focus-visible::before { background: var(--trace); transform: scale(1.25); }
.part a:hover { background: linear-gradient(90deg, transparent 0, rgba(152, 133, 117, 0.12) 40px); }
.part .mono, .part .lab { color: var(--dim); }
.part b { font: 650 clamp(1.2rem, 1vw + 0.9rem, 1.55rem)/1.2 var(--f-display); font-stretch: 88%; letter-spacing: -0.01em; }
.part p { color: var(--ink-soft); font-size: 1rem; line-height: 1.5; }
.part svg { width: 18px; height: 18px; align-self: center; transition: transform 0.3s var(--ease); }
.part a:hover svg { transform: translateX(4px); }
@media (max-width: 860px) {
  .part a { grid-template-columns: 1fr 20px; padding-left: 36px; }
  .part .mono, .part .lab { grid-column: 1 / -1; }
  .part b { grid-column: 1; }
  .part p { grid-column: 1 / -1; }
  .part svg { grid-row: 2; grid-column: 2; }
}

/* Geräte-Bühne */
.stage { background: var(--stage); color: var(--on-stage); color-scheme: dark; }
.stage .section__head p, .stage p { color: var(--on-stage-dim); }
.stage .h2, .stage .h3, .stage b { color: var(--on-stage); }
.videos { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(20px, 3vw, 40px); }
.video { display: grid; gap: 16px; align-content: start; }
.video__frame { position: relative; border: 1px solid var(--stage-line); background: #000; aspect-ratio: 16 / 9; }
.video__frame video { width: 100%; height: 100%; object-fit: cover; }
.video__meta { display: grid; gap: 8px; }
.video__meta .mono { color: var(--taupe-on-stage); }
.video p { font-size: 1rem; line-height: 1.55; max-width: 40em; }
@media (max-width: 860px) { .videos { grid-template-columns: 1fr; } }

/* Über mich kurz */
.about { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: clamp(32px, 6vw, 96px); align-items: center; }
.about picture img { width: 100%; height: auto; aspect-ratio: 2 / 3; object-fit: cover; filter: grayscale(1) contrast(1.04); }
.about__text { display: grid; gap: 22px; max-width: 38em; }
.about__text .actions { margin-top: 6px; }
.about figure { position: relative; }
.about figcaption { position: absolute; left: 0; bottom: -1px; background: var(--paper); padding: 8px 12px 0 0; font: 500 0.875rem/1.4 var(--f-display); font-stretch: 92%; color: var(--dim); }
@media (max-width: 860px) { .about { grid-template-columns: 1fr; } .about picture img { max-width: 420px; } }

/* Faserende */
.fiber-end { position: relative; overflow: hidden; }
.fiber-end .wrap { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 32px 64px; align-items: end; }
.fiber-end p { margin-top: 18px; max-width: 34em; }
.fiber-end svg.noise { width: 100%; height: 120px; margin-bottom: clamp(36px, 5vw, 64px); }
.fiber-end .noise path { fill: none; stroke: var(--taupe-on-stage); stroke-width: 1.5; vector-effect: non-scaling-stroke; }
.fiber-end .noise line { stroke: var(--stage-line); vector-effect: non-scaling-stroke; }
@media (max-width: 760px) { .fiber-end .wrap { grid-template-columns: 1fr; } }

/* ---------- Unterseiten ---------- */
.locator { border-bottom: 1px solid var(--rule); }
.locator .wrap { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 24px; height: 58px; }
.locator svg { width: 100%; height: 40px; overflow: visible; }
.locator .line { fill: none; stroke: var(--trace); stroke-width: 1.5; vector-effect: non-scaling-stroke; }
.locator .here { stroke: var(--ink); stroke-dasharray: 3 3; vector-effect: non-scaling-stroke; }
.locator .dot { fill: var(--ink); }
.locator .mono { color: var(--dim); white-space: nowrap; }
.is-stage .locator { border-color: var(--stage-line); }
.is-stage .locator .line { stroke: var(--taupe-on-stage); }
.is-stage .locator .here { stroke: var(--on-stage); }
.is-stage .locator .dot { fill: var(--on-stage); }
.is-stage .locator .mono { color: var(--on-stage-dim); }
@media (max-width: 600px) { .locator .wrap { grid-template-columns: 1fr; height: auto; padding-top: 10px; padding-bottom: 10px; gap: 4px; } .locator svg { height: 28px; } }

.page-head { padding: clamp(3rem, 7vw, 6rem) 0 clamp(2.5rem, 5vw, 4rem); }
.page-head .lead { margin-top: 24px; }
.page-head .lead + .lead { margin-top: 14px; }
.crumbs { font: 500 14px var(--f-display); font-stretch: 92%; margin-bottom: 22px; display: flex; gap: 8px; color: var(--dim); }
.crumbs a { color: var(--ink); }

/* Lesefläche */
.read { padding-bottom: var(--t-section-gap); }
.read__meta { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-top: 22px; color: var(--dim); }
.prose { font-size: var(--t-read); line-height: 1.68; max-width: var(--measure); }
.prose > * + * { margin-top: 1.05em; }
.prose h2 { font: 700 clamp(1.5rem, 1.4vw + 1rem, 2rem)/1.15 var(--f-display); font-stretch: 86%; letter-spacing: -0.015em; margin-top: 2.1em; }
.prose h3 { font: 650 1.3rem/1.25 var(--f-display); font-stretch: 90%; margin-top: 1.8em; }
.prose h2 + *, .prose h3 + * { margin-top: 0.6em; }
.prose ul, .prose ol { padding-left: 1.2em; }
.prose li + li { margin-top: 0.45em; }
.prose li::marker { color: var(--trace); }
.prose a:not(.btn) { color: var(--ink); text-decoration-color: var(--taupe); }
.prose strong { font-weight: 650; }
.prose figure { margin-top: 2em; margin-bottom: 2em; }
.prose figure img { width: 100%; height: auto; border: 1px solid var(--grid); background: #fff; }
.prose figcaption { margin-top: 10px; font: italic 0.9375rem/1.45 var(--f-text); color: var(--dim); }
.prose > p:first-child { font-size: 1.25rem; line-height: 1.6; }

.after { display: grid; gap: clamp(28px, 4vw, 48px); max-width: var(--measure); margin-top: clamp(48px, 6vw, 80px); }
.pager { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.pager a { display: grid; gap: 6px; padding: 20px 20px 20px 0; text-decoration: none; }
.pager a + a, .pager .next { border-left: 1px solid var(--rule); padding-left: 20px; text-align: right; }
.pager .mono { color: var(--dim); }
.pager b { font: 650 1.15rem/1.25 var(--f-display); font-stretch: 90%; }
.pager a:hover b { text-decoration: underline; text-underline-offset: 0.2em; }
.pager .up { grid-column: 1 / -1; border-top: 1px solid var(--grid); text-align: left; padding: 14px 0; border-left: 0; }
@media (max-width: 600px) { .pager { grid-template-columns: 1fr; } .pager a + a, .pager .next { border-left: 0; border-top: 1px solid var(--grid); padding-left: 0; text-align: left; } }

.note { border-top: 1px solid var(--rule); padding: clamp(20px, 3vw, 28px) 0 0; display: grid; gap: 10px; }
.note--author { grid-template-columns: 88px minmax(0, 1fr); gap: 4px 20px; align-items: start; }
.note--author img { grid-row: span 3; width: 88px; height: 88px; object-fit: cover; object-position: 50% 18%; filter: grayscale(1); }
.note p { font-size: 1rem; line-height: 1.55; color: var(--ink-soft); }
.note .h3 { font-size: 1.2rem; }
.note .actions { margin-top: 6px; }

/* FAQ */
.faq { border-top: 1px solid var(--rule); max-width: 960px; }
.faq details { border-bottom: 1px solid var(--rule); }
.faq summary { list-style: none; cursor: pointer; display: grid; grid-template-columns: minmax(0, 1fr) 24px; gap: 16px; align-items: center; padding: 22px 0; font: 650 clamp(1.1rem, 0.8vw + 0.9rem, 1.35rem)/1.3 var(--f-display); font-stretch: 90%; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary svg { width: 20px; height: 20px; transition: transform 0.3s var(--ease); }
.faq details[open] summary svg { transform: rotate(45deg); }
.faq .answer { padding: 0 0 26px; max-width: var(--measure); color: var(--ink-soft); }

/* Liste der Artikel */
.list-note { margin-top: 36px; display: flex; flex-wrap: wrap; align-items: baseline; gap: 12px 24px; color: var(--ink-soft); }

/* Über mich Seite */
.profile { display: grid; grid-template-columns: minmax(0, 0.75fr) minmax(0, 1.25fr); gap: clamp(32px, 6vw, 96px); align-items: start; }
.profile picture img { width: 100%; height: auto; filter: grayscale(1) contrast(1.04); }
.profile .prose h2:first-child { margin-top: 0; }
@media (max-width: 860px) { .profile { grid-template-columns: 1fr; } .profile picture img { max-width: 420px; } }

/* Videos Seite */
.video-list { display: grid; gap: clamp(56px, 8vw, 104px); }
.video-row { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr); gap: clamp(24px, 4vw, 56px); align-items: start; }
.video-row .video__meta { gap: 16px; }
.video-row p { font-size: 1.0625rem; line-height: 1.6; color: var(--on-stage-dim); }
.is-stage .link-arrow { color: var(--on-stage); }
@media (max-width: 860px) { .video-row { grid-template-columns: 1fr; } }

/* ---------- Formular ---------- */
.form-layout { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: clamp(32px, 6vw, 96px); align-items: start; padding-bottom: var(--t-section-gap); }
@media (max-width: 860px) { .form-layout { grid-template-columns: 1fr; } }
.form { display: grid; gap: 22px; }
.field { display: grid; gap: 8px; }
.field label, .field legend { font: 600 15px/1.3 var(--f-display); font-stretch: 92%; }
.field .hint { font: 400 0.875rem/1.4 var(--f-text); color: var(--dim); }
.field .opt { font-weight: 400; color: var(--dim); }
.field input[type="text"], .field input[type="email"], .field select, .field textarea {
  width: 100%; font: 400 1.0625rem/1.4 var(--f-text); color: var(--ink);
  background: #f3f4f1; border: 1px solid var(--ink); border-radius: 0; padding: 13px 14px;
  transition: border-color 0.2s;
}
.field textarea { min-height: 180px; resize: vertical; }
.field select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3 6l5 5 5-5' fill='none' stroke='%231a1918' stroke-width='1.5'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; background-size: 16px; padding-right: 40px; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--ink); }
.field ::placeholder { color: #67635c; }
.field-error { display: none; font: 500 0.875rem/1.4 var(--f-display); color: #8c2b1f; }
.field.has-error .field-error { display: block; }
.field.has-error input, .field.has-error select, .field.has-error textarea { border-color: #8c2b1f; border-width: 2px; padding: 12px 13px; }
.check { display: grid; grid-template-columns: 22px minmax(0, 1fr); gap: 12px; align-items: start; font: 400 1rem/1.5 var(--f-text); }
.check input { width: 20px; height: 20px; margin: 2px 0 0; accent-color: var(--ink); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-status { font: 500 0.9375rem/1.5 var(--f-display); }
.form-status.is-error { color: #8c2b1f; }
.form button[disabled] { opacity: 0.6; cursor: progress; }
#form-wrap.is-sent .form { display: none; }
#form-success { border: 1px solid var(--rule); padding: clamp(24px, 4vw, 40px); display: grid; gap: 14px; }
#form-success:focus { outline: none; }

/* ---------- Fuß ---------- */
.site-foot { background: var(--stage); color: var(--on-stage); padding: clamp(56px, 7vw, 88px) 0 32px; }
.site-foot .wrap { display: grid; gap: 48px; }
.foot-top { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: 40px 64px; align-items: start; }
.foot-top .brand { width: 200px; }
.foot-top p { margin-top: 18px; color: var(--on-stage-dim); max-width: 26em; }
.foot-events { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--stage-line); }
.foot-events li { border-bottom: 1px solid var(--stage-line); }
.foot-events a { display: grid; grid-template-columns: 1.6em 6.6em minmax(0, 1fr); gap: 12px; padding: 12px 0; text-decoration: none; align-items: baseline; }
.foot-events .mono { color: var(--on-stage-dim); }
.foot-events b { font: 600 1.0625rem var(--f-display); font-stretch: 92%; }
.foot-events a:hover b { text-decoration: underline; text-underline-offset: 0.2em; }
.foot-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px 32px; border-top: 1px solid var(--stage-line); padding-top: 24px; font: 400 0.9375rem var(--f-display); color: var(--on-stage-dim); }
.foot-bottom ul { list-style: none; display: flex; flex-wrap: wrap; gap: 10px 24px; padding: 0; margin: 0; }
.foot-bottom a { color: var(--on-stage); }
@media (max-width: 860px) { .foot-top { grid-template-columns: 1fr; } }

/* Erscheinen beim Scrollen: Inhalt bleibt ohne JS sichtbar */
.js [data-reveal] { opacity: 0; transform: translateY(14px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.js [data-reveal].is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .js [data-reveal] { opacity: 1; transform: none; transition: none; } }

/* Touch-Geräte: kein Zeigen auf Ereignisse, daher keine Hover-Erklärung */
@media (hover: none) { .explain { display: none; } }
.axis span { white-space: nowrap; }
.fiber-end + .site-foot, .stage + .site-foot { border-top: 1px solid var(--stage-line); }
#form-success[hidden] { display: none; }

/* Beschriftungen ohne Messwert (Teil N, Pager) */
.lab { font: 600 0.875rem/1.3 var(--f-display); font-stretch: 92%; color: var(--dim); letter-spacing: 0.01em; }
.read__meta { font: 500 0.9375rem/1.4 var(--f-display); font-stretch: 92%; }
.read__meta .mono { font-size: 0.8125rem; }

/* Abschnitte der Startseite öffnen mit ihrem Abschnitt der Messkurve */
.section--ev { padding-top: 0; }
.section--ev > .locator + .wrap, .section--ev > .locator + svg.noise { margin-top: clamp(3.5rem, 7vw, 6.5rem); }
.section--deep .locator { background: transparent; }
.stage .locator { border-color: var(--stage-line); }
.stage .locator .line { stroke: var(--taupe-on-stage); }
.stage .locator .here { stroke: var(--on-stage); }
.stage .locator .dot { fill: var(--on-stage); }
.stage .locator .mono { color: var(--on-stage-dim); }
.locator .wrap { grid-template-columns: minmax(0, 1fr) 22rem; }
.locator .mono { text-align: right; }
@media (max-width: 600px) { .locator .wrap { grid-template-columns: 1fr; } .locator .mono { text-align: left; } }

/* Handy: Messkurve direkt unter den Buttons, Tabelle danach */
@media (max-width: 980px) {
  .hero { display: flex; flex-direction: column; }
  .hero__wrap, .hero__top { display: contents; }
  .hero__copy { order: 1; padding: var(--t-hero-top) var(--t-gutter) 0; }
  .hero .trace { order: 2; }
  .hero__cap { order: 3; }
  .events { order: 4; margin: 8px var(--t-gutter) clamp(40px, 8vw, 64px); }
}
@media (max-width: 480px) { .axis span:nth-last-child(-n+2) { display: none; } }

/* Fokus der Formularfelder: Tintenlinie statt Halo */
.field input:focus-visible, .field select:focus-visible, .field textarea:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }

/* Abschluss der Videos-Seite */
.wish { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 28px 64px; align-items: end; }
.wish p { margin-top: 18px; max-width: 34em; color: var(--on-stage-dim); }
@media (max-width: 760px) { .wish { grid-template-columns: 1fr; } }
.page-head__actions { margin-top: 28px; }

/* Lange Adressen in Beiträgen umbrechen statt über den Rand ragen */
.prose a, .prose p, .prose li, .prose figcaption { overflow-wrap: anywhere; }

/* ---------- YouTube erst nach Klick (Zwei-Klick-Lösung) ---------- */
.videos { grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 1100px) { .videos { grid-template-columns: 1fr 1fr; } }
@media (max-width: 860px) { .videos { grid-template-columns: 1fr; } }
.yt { position: relative; overflow: hidden; }
.yt picture, .yt img { display: block; width: 100%; height: 100%; object-fit: cover; }
.yt__play { position: absolute; inset: 0; display: grid; place-content: center; justify-items: center; gap: 10px; width: 100%; border: 0; padding: 0; cursor: pointer; color: #fff; background: linear-gradient(to top, rgba(14, 13, 12, 0.55), rgba(14, 13, 12, 0.1) 60%); transition: background-color 0.25s; }
.yt__play svg { width: 64px; height: 64px; filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.45)); transition: transform 0.3s var(--ease); }
.yt__play .mono { background: rgba(14, 13, 12, 0.7); padding: 3px 7px; border-radius: 2px; font-size: 0.75rem; }
.yt__play:hover svg, .yt__play:focus-visible svg { transform: scale(1.08); }
.yt__play:focus-visible { outline: 2px solid #fff; outline-offset: -6px; }
.yt__note { margin: 8px 0 0; font: 400 0.8125rem/1.45 var(--f-display); font-stretch: 94%; color: var(--dim); }
.yt__note a { color: inherit; text-decoration-color: var(--taupe); }
.stage .yt__note, .is-stage .yt__note { color: var(--on-stage-dim); }
.stage .yt__note a, .is-stage .yt__note a { color: var(--on-stage); }
.prose .yt__note { font-size: 0.875rem; }
.yt iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.prose .video--post { margin: 2em 0; }
.prose .video--post .video__frame { border: 1px solid var(--grid); background: #000; aspect-ratio: 16 / 9; }
.prose .video--post img { border: 0; }

/* ---------- Beiträge aus dem Editor ---------- */
.prose h2, .prose h3, .prose h4, .prose hr, .prose table, .prose .video--post { clear: both; }
.prose h4 { font: 650 1.0625rem/1.3 var(--f-display); letter-spacing: 0.01em; margin-top: 1.6em; }
.prose figure.bild--mittel { max-width: 62%; margin-left: auto; margin-right: auto; }
.prose figure.bild--links, .prose figure.bild--rechts { width: 44%; margin-top: 0.35em; margin-bottom: 1em; }
.prose figure.bild--links { float: left; margin-right: 1.6em; }
.prose figure.bild--rechts { float: right; margin-left: 1.6em; }
.prose::after { content: ""; display: block; clear: both; }
.prose blockquote { border-left: 2px solid var(--taupe); padding-left: 1.1em; font-style: italic; color: var(--ink-soft); }
.prose hr { border: 0; border-top: 1px solid var(--grid); margin: 2.4em 0; }
.prose table { width: 100%; border-collapse: collapse; font-size: 0.9375rem; line-height: 1.5; }
.prose th, .prose td { border-bottom: 1px solid var(--grid); padding: 0.55em 0.9em 0.55em 0; text-align: left; vertical-align: top; }
.prose th { font: 600 0.75rem/1.4 var(--f-mono); letter-spacing: 0.04em; text-transform: uppercase; color: var(--dim); border-bottom-color: var(--ink); }
.prose table caption { caption-side: bottom; text-align: left; padding-top: 0.6em; font-style: italic; color: var(--dim); }
.prose code { font: 0.875em var(--f-mono); background: var(--paper-deep); padding: 0.1em 0.3em; }
.prose pre { font: 0.875rem/1.55 var(--f-mono); background: var(--paper-deep); padding: 1em 1.2em; overflow-x: auto; }
.prose pre code { background: none; padding: 0; }
.prose p.lead { font-size: 1.25rem; line-height: 1.6; }
.prose p.hinweis { border: 1px solid var(--grid); border-left: 3px solid var(--taupe); background: var(--paper-deep); padding: 0.9em 1.1em; }
.prose .klein { font-size: 0.875em; color: var(--dim); }
.prose .akzent { color: var(--taupe-deep); font-weight: 600; }
@media (max-width: 640px) {
  .prose figure.bild--mittel { max-width: none; }
  .prose figure.bild--links, .prose figure.bild--rechts { float: none; width: auto; margin-left: 0; margin-right: 0; }
  .prose [style*="padding-left"] { padding-left: 1.2em !important; }
  .prose table { display: block; overflow-x: auto; }
}