/* becertain.app · Richtung B „Instrument"
   Tokens aus pruefungstrainer-ios/BecertainDesign/README.md (Palette, Typografie, Raster).
   Systemschrift, keine externen Schriften. Mobile zuerst, 8-Punkt-Raster mit 4 als Feinstufe. */

:root {
  color-scheme: light dark;

  /* Farben Light */
  --background: #F5F6F8;
  --surface: #FFFFFF;
  --surface-sunken: #E1E4EA;
  --separator: #D9DCE2;
  --separator-inner: #E6E8EC;
  --text-primary: #0E1116;
  --text-secondary: #4A5260;
  --text-tertiary: #5C6472;
  --accent: #1F44C4;
  --accent-pressed: #1837A3;
  --accent-on-surface: #E8EDFB;
  --on-accent: #FFFFFF;
  --correct: #0E7354;
  --correct-fill: #E4F2EC;
  --hint: #5B4FA8;
  --hint-fill: #EEECF8;
  --focus-ring: #1F44C4;
  --correct-line: #B9DCCB;
  --incorrect: #B4430F;
  --incorrect-fill: #FBEADF;
  --incorrect-line: #F1C7AE;
  --control: #7D8592;

  /* Bewegung aus Motion.swift: Dauer und Kurve je Ablauf. smooth ohne Überschwingen, easeOut wie SwiftUI. */
  --ease-smooth: cubic-bezier(0.2, 0, 0, 1);
  --ease-out: cubic-bezier(0, 0, 0.58, 1);
  --d-select: 140ms;        /* Motion.select */
  --d-check: 250ms;         /* Motion.checkCorrect */
  --d-fill: 150ms;          /* Motion.checkCardFill, checkIncorrect */
  --d-disclosure: 200ms;    /* Motion.disclosure */
  --d-explanation: 300ms;   /* Motion.explanation, Abschnitte beim Scrollen */
  --d-progress: 350ms;      /* Motion.progress */
  --d-appear: 400ms;        /* Motion.unlockSymbol, Gerät im Kopf */
  --stagger: 60ms;          /* Motion.staggerStep */

  /* Schrift */
  --font-text: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro", Inter, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-display: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro", Inter, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;

  /* Raster */
  --s4: 4px; --s8: 8px; --s12: 12px; --s16: 16px; --s20: 20px; --s24: 24px; --s32: 32px; --s40: 40px; --s48: 48px; --s64: 64px; --s96: 96px;
  --gutter: 16px;
  --reading: 640px;
  --wide: 1040px;

  /* Radien */
  --r-card: 14px;
  --r-button: 10px;
  --r-mono: 4px;
  --r-chip: 6px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #0B0D10;
    --surface: #14171C;
    --surface-sunken: #262B34;
    --separator: #2A2F38;
    --separator-inner: #22262E;
    --text-primary: #ECEFF4;
    --text-secondary: #A9B1BE;
    --text-tertiary: #8A93A1;
    --accent: #8EA6FF;
    --accent-pressed: #7A93F2;
    --accent-on-surface: #1A2240;
    --on-accent: #0B0D10;
    --correct: #5BD1A6;
    --correct-fill: #10241D;
    --hint: #B7AEF0;
    --hint-fill: #1E1C33;
    --focus-ring: #8EA6FF;
    --correct-line: #1F4A3A;
    --incorrect: #FF9A66;
    --incorrect-fill: #2C1A10;
    --incorrect-line: #5A3320;
    --control: #6B7482;
  }
}

/* Grundlagen */
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--background);
  color: var(--text-primary);
  font-family: var(--font-text);
  font-size: 17px;
  line-height: 26px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "kern";
  overflow-wrap: break-word;
  hyphens: manual;
  -webkit-hyphens: manual;
}
/* Silbentrennung nur im Fließtext: Rechtstexte, Erklärung, Zitat, FAQ-Antworten, Demo-Frage */
.legal p, .legal li, .faq .answer, .erklaerung > p, .quelle__zitat, .demo__frage, .rechenweg p { hyphens: auto; -webkit-hyphens: auto; }
h1, h2, h3, p, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { padding: 0; }
img, svg { display: block; max-width: 100%; height: auto; }
a { color: var(--accent); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent-pressed); }
:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 2px; border-radius: 4px; }

.skip {
  position: absolute; left: var(--s16); top: -100px;
  background: var(--surface); color: var(--text-primary);
  padding: var(--s12) var(--s16); border-radius: var(--r-button); border: 1px solid var(--separator);
  z-index: 10;
}
.skip:focus { top: var(--s8); }

.wrap { width: 100%; max-width: calc(var(--reading) + 2 * var(--gutter)); margin: 0 auto; padding: 0 var(--gutter); }
.wrap--wide { max-width: calc(var(--wide) + 2 * var(--gutter)); }

/* Kopf */
.site-header { border-bottom: 1px solid var(--separator); background: var(--background); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: var(--s16); min-height: 64px; }
.brand {
  display: inline-flex; align-items: center; gap: var(--s8);
  min-height: 44px; color: var(--text-primary); text-decoration: none;
  font-family: var(--font-display); font-weight: 700; font-size: 20px; letter-spacing: -0.02em;
}
.brand:hover { color: var(--text-primary); }
.brand svg { width: 28px; height: 28px; flex: none; }
.site-nav ul { list-style: none; display: flex; gap: var(--s4); }
.site-nav a {
  display: inline-flex; align-items: center; min-height: 44px; padding: 0 var(--s12);
  color: var(--text-secondary); text-decoration: none; font-size: 15px; font-weight: 500; border-radius: var(--r-button);
}
.site-nav a:hover { color: var(--text-primary); background: var(--surface); }
.site-nav a[aria-current="page"] { color: var(--text-primary); }

/* Typografie */
.label {
  font-family: var(--font-mono); font-size: 12px; line-height: 16px; font-weight: 500;
  letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-secondary);
}
h1 {
  font-family: var(--font-display); font-size: 34px; line-height: 41px; font-weight: 700; letter-spacing: -0.012em;
  text-wrap: balance;
}
h2 { font-family: var(--font-display); font-size: 24px; line-height: 30px; font-weight: 700; letter-spacing: -0.01em; text-wrap: balance; }
h3 { font-size: 19px; line-height: 25px; font-weight: 600; }
.lead { font-size: 19px; line-height: 29px; color: var(--text-secondary); text-wrap: pretty; }
.muted { color: var(--text-secondary); }
.small { font-size: 15px; line-height: 22px; }
.footnote { font-size: 13px; line-height: 19px; color: var(--text-tertiary); }
.mono { font-family: var(--font-mono); font-size: 0.94em; }
p + p { margin-top: var(--s12); }

/* Abschnitte */
main { display: block; }
.hero { padding: var(--s48) 0 var(--s40); }
.hero .label { margin-bottom: var(--s12); }
.hero h1 { margin-bottom: var(--s16); }
.hero .lead { margin-bottom: var(--s24); }
.section { padding: var(--s40) 0; border-top: 1px solid var(--separator); }
.section > .wrap > h2, .section-head { margin-bottom: var(--s16); }
.section-head .label { margin-bottom: var(--s8); }
.section .intro { color: var(--text-secondary); margin-bottom: var(--s24); }

/* Seitenkopf für Textseiten */
.page-head { padding: var(--s40) 0 var(--s24); }
.page-head .label { margin-bottom: var(--s8); }
.page-head p { margin-top: var(--s12); color: var(--text-secondary); }

/* Karten */
.card {
  background: var(--surface); border: 1px solid var(--separator); border-radius: var(--r-card);
  padding: var(--s20);
}
.card + .card { margin-top: var(--s12); }
.card h3 { margin-bottom: var(--s8); }
.card .label { margin-bottom: var(--s8); }
.stack > * + * { margin-top: var(--s12); }

.app-card { display: grid; gap: var(--s16); }
.app-card__head { display: flex; gap: var(--s16); align-items: center; }
.app-card__head svg { width: 56px; height: 56px; flex: none; }
.app-card__name { font-family: var(--font-display); font-size: 20px; line-height: 25px; font-weight: 600; }
.app-card__status { margin-top: var(--s4); }

/* Liste mit Häkchen */
.checks { list-style: none; display: grid; gap: var(--s12); }
.checks li { display: grid; grid-template-columns: 20px 1fr; gap: var(--s12); align-items: start; }
.checks li::before {
  content: ""; width: 20px; height: 20px; margin-top: 3px; border-radius: 50%;
  background: var(--accent-on-surface)
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M6 10.5l2.6 2.6L14 7.6' fill='none' stroke='%231F44C4' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 20px no-repeat;
}
@media (prefers-color-scheme: dark) {
  .checks li::before {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M6 10.5l2.6 2.6L14 7.6' fill='none' stroke='%238EA6FF' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  }
}

/* Nummerierte Argumente */
.points { list-style: none; display: grid; gap: var(--s12); counter-reset: punkt; }
.points li { counter-increment: punkt; }
.points .card { position: relative; padding-left: 56px; }
.points .card::before {
  content: counter(punkt, decimal-leading-zero);
  position: absolute; left: var(--s20); top: 22px;
  font-family: var(--font-mono); font-size: 13px; line-height: 16px; font-weight: 500; color: var(--accent);
}

/* Buttons */
.button {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--s8);
  min-height: 52px; padding: 0 var(--s20); border-radius: var(--r-button);
  background: var(--accent); color: var(--on-accent); text-decoration: none;
  font-size: 17px; line-height: 22px; font-weight: 600; border: 0;
}
.button:hover { background: var(--accent-pressed); color: var(--on-accent); }
.button--secondary { background: var(--surface); color: var(--accent); border: 1px solid var(--separator); }
.button--secondary:hover { background: var(--accent-on-surface); color: var(--accent); }
.actions { display: flex; flex-wrap: wrap; gap: var(--s12); align-items: center; }
.reassure { margin-top: var(--s12); font-size: 15px; line-height: 21px; color: var(--text-secondary); }

/* Platzhalter für das App-Store-Badge.
   Sobald die App live ist: durch das offizielle Badge von Apple ersetzen (siehe README, Abschnitt Livegang). */
.store-slot {
  display: inline-flex; align-items: center; gap: var(--s8);
  min-height: 52px; padding: 0 var(--s16); border-radius: var(--r-button);
  border: 1px dashed var(--text-tertiary); color: var(--text-secondary);
  font-size: 15px; font-weight: 500;
}
.store-slot svg { width: 18px; height: 18px; }

/* Chips */
.chip {
  display: inline-flex; align-items: center; min-height: 24px; padding: 0 var(--s8);
  border-radius: var(--r-chip); background: var(--hint-fill); color: var(--hint);
  font-family: var(--font-mono); font-size: 12px; line-height: 16px; font-weight: 500; letter-spacing: 0.04em;
}

/* Gratis und Pro */
.offer { display: grid; gap: var(--s12); }
.offer .card h3 { display: flex; justify-content: space-between; align-items: baseline; gap: var(--s12); }
.offer .price { font-family: var(--font-mono); font-size: 15px; font-weight: 500; color: var(--text-secondary); }
.offer .checks { margin-top: var(--s12); }
.offer .card + .card { margin-top: 0; }
.offer .card--pro { border-color: var(--accent); }

/* Hinweisbox */
.notice { background: var(--surface); border: 1px solid var(--separator); border-left: 3px solid var(--accent); border-radius: var(--r-card); padding: var(--s16) var(--s20); }
.notice .label { margin-bottom: var(--s8); }

/* FAQ */
.faq { display: grid; gap: var(--s12); }
.faq details { background: var(--surface); border: 1px solid var(--separator); border-radius: var(--r-card); }
.faq summary {
  list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: var(--s16);
  min-height: 52px; padding: var(--s12) var(--s20); font-weight: 600; font-size: 17px; line-height: 23px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; flex: none; width: 10px; height: 10px; margin-right: 2px;
  border-right: 2px solid var(--text-tertiary); border-bottom: 2px solid var(--text-tertiary);
  transform: rotate(45deg) translate(-2px, -2px); transition: transform 200ms ease;
}
.faq details[open] summary::after { transform: rotate(-135deg) translate(-2px, -2px); }
.faq .answer { padding: 0 var(--s20) var(--s20); color: var(--text-primary); }
@media (prefers-reduced-motion: reduce) { .faq summary::after { transition: none; } }

/* Rechtstexte */
.legal { padding-bottom: var(--s48); }
.legal h2 { margin: var(--s40) 0 var(--s16); }
.legal h2:first-child { margin-top: 0; }
.legal h3 { margin: var(--s24) 0 var(--s8); }
.legal .card h3:first-child { margin-top: 0; }
.legal .card h2 { font-size: 20px; line-height: 25px; margin: var(--s24) 0 var(--s8); }
.legal .stand { margin-top: var(--s24); }
.toc { list-style: none; display: grid; gap: var(--s4); margin-top: var(--s16); }
.toc a { display: inline-flex; align-items: center; min-height: 44px; }

.fields { display: grid; gap: var(--s20); }
.fields dt { margin-bottom: var(--s4); }
.fields dd { margin: 0; }

.steps-list { padding-left: var(--s24); display: grid; gap: var(--s8); }
.steps-list li::marker { font-family: var(--font-mono); color: var(--text-secondary); }

/* Fuß */
.site-footer { border-top: 1px solid var(--separator); padding: var(--s32) 0 var(--s48); margin-top: var(--s16); }
.site-footer .disclaimer { margin-bottom: var(--s24); }
.site-footer .disclaimer .label { margin-bottom: var(--s8); }
.footer-nav ul { list-style: none; display: flex; flex-wrap: wrap; gap: 0 var(--s16); margin: 0 0 var(--s16) calc(-1 * var(--s4)); }
.footer-nav a { display: inline-flex; align-items: center; min-height: 44px; padding: 0 var(--s4); color: var(--text-secondary); font-size: 15px; }
.footer-nav a:hover { color: var(--text-primary); }

/* 404 */
.notfound { padding-top: var(--s64); padding-bottom: var(--s64); }
.notfound h1 { margin: var(--s12) 0 var(--s16); }

/* Breitere Fenster */
@media (min-width: 720px) {
  :root { --gutter: 24px; }
  .hero { padding: var(--s96) 0 var(--s64); }
  h1 { font-size: 48px; line-height: 54px; letter-spacing: -0.02em; }
  h2 { font-size: 28px; line-height: 34px; }
  .section { padding: var(--s64) 0; }
  .page-head { padding: var(--s64) 0 var(--s32); }
  .offer { grid-template-columns: 1fr 1fr; gap: var(--s16); }
}

/* ---------------------------------------------------------------
   Lebendige Produktseite (Entwurf 28.10.2026, Freigabe ausstehend)
   --------------------------------------------------------------- */

/* Kopf und Marke nie umbrechen */
.site-nav a, .brand { white-space: nowrap; }
@media (max-width: 399px) {
  .site-nav a { padding: 0 var(--s8); font-size: 14px; }
  .site-nav ul { gap: 0; }
  .brand { font-size: 18px; }
  .brand svg { width: 24px; height: 24px; }
}

/* Nur für Screenreader */
.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; }

/* Kopf mit Gerät */
.hero--product .wrap { display: grid; gap: var(--s40); align-items: center; }
.hero--product h1 br { display: none; }
.hero__device { justify-self: center; width: min(68vw, 272px); }
.reassure--tight { margin-top: var(--s12); }

/* Gerät: schlanker Rahmen, nur CSS, keine Bilddatei */
.device {
  position: relative; background: var(--surface); border: 1px solid var(--separator);
  border-radius: 44px; padding: 7px;
  transition: border-color var(--d-select) var(--ease-out);
}
.device img, .device picture { display: block; width: 100%; height: auto; border-radius: 37px; background: var(--surface-sunken); }
.device--small { border-radius: 30px; padding: 5px; }
.device--small img, .device--small picture { border-radius: 25px; }

.js .hero__device { animation: geraet-ein var(--d-appear) var(--ease-smooth) 120ms both; }
@keyframes geraet-ein { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }

/* Galerie */
.gallery {
  list-style: none; display: grid; grid-auto-flow: column; grid-auto-columns: min(64vw, 240px);
  gap: var(--s16); overflow-x: auto; overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory; scroll-padding-inline: var(--gutter);
  margin: 0 calc(-1 * var(--gutter)); padding: var(--s4) var(--gutter) var(--s16);
  scrollbar-width: thin;
}
.gallery > li { scroll-snap-align: start; }
.shot { display: grid; gap: var(--s16); align-content: start; }
.shot__text .label { color: var(--accent); margin-bottom: var(--s8); }
.shot__text h3 { font-size: 17px; line-height: 22px; font-weight: 600; text-wrap: balance; }
.shot__text p { margin-top: var(--s4); font-size: 15px; line-height: 21px; color: var(--text-secondary); text-wrap: pretty; }
.gallery-hint { margin-top: var(--s4); }

/* Probier eine Frage */
.demo { padding: var(--s20); }
.demo__meta { display: flex; align-items: center; gap: var(--s8); margin-bottom: var(--s12); color: var(--text-secondary); font-size: 15px; line-height: 20px; }
.mono-chip {
  display: inline-flex; align-items: center; min-height: 22px; padding: 0 var(--s4) 0 5px;
  border: 1px solid var(--separator); border-radius: var(--r-mono);
  font-family: var(--font-mono); font-size: 12px; line-height: 16px; font-weight: 500; color: var(--text-secondary);
}
.demo__frage { font-size: 20px; line-height: 29px; font-weight: 500; text-wrap: pretty; }
.demo__anleitung { margin-top: var(--s8); color: var(--text-secondary); font-size: 15px; line-height: 20px; }
.optionen { list-style: none; display: grid; gap: var(--s12); margin-top: var(--s16); }
.option {
  width: 100%; min-height: 52px; display: grid; grid-template-columns: 26px 1fr; gap: var(--s12); align-items: center;
  padding: 13px 14px; text-align: left; cursor: pointer;
  background: var(--surface); color: var(--text-primary); font: inherit; font-size: 17px; line-height: 22px;
  border: 1px solid var(--separator); border-radius: var(--r-button);
  transition: border-color var(--d-select) var(--ease-out), background-color var(--d-select) var(--ease-out), box-shadow var(--d-select) var(--ease-out);
}
.option__mark {
  width: 26px; height: 26px; border-radius: 50%; border: 1.5px solid var(--control);
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-mono); font-size: 12px; font-weight: 500; color: var(--text-secondary);
  transition: background-color var(--d-select) var(--ease-out), border-color var(--d-select) var(--ease-out), color var(--d-select) var(--ease-out);
}
.option__mark svg { width: 14px; height: 14px; }
@media (hover: hover) { .option:not(:disabled):hover { border-color: var(--accent); } }
.option[aria-pressed="true"] { background: var(--accent-on-surface); border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.option[aria-pressed="true"] .option__mark { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.option:disabled { cursor: default; }
.option.is-richtig { background: var(--correct-fill); border-color: var(--correct); box-shadow: inset 0 0 0 1px var(--correct); }
.option.is-richtig .option__mark { background: var(--correct); border-color: var(--correct); color: var(--surface); }
.option.is-falsch { background: var(--incorrect-fill); border-color: var(--incorrect); box-shadow: inset 0 0 0 1px var(--incorrect); }
.option.is-falsch .option__mark { background: var(--incorrect); border-color: var(--incorrect); color: var(--surface); }
.option.is-loesung { border: 1.5px dashed var(--correct); box-shadow: none; }
.option.is-loesung .option__mark { border-color: var(--correct); color: var(--correct); }
.option.is-neutral { color: var(--text-secondary); }
.option__wort { display: block; margin-top: 2px; font-size: 13px; line-height: 18px; font-weight: 600; }
.is-richtig .option__wort, .is-loesung .option__wort { color: var(--correct); }
.is-falsch .option__wort { color: var(--incorrect); }

.demo__aktion { margin-top: var(--s20); display: grid; gap: var(--s8); }
.demo__aktion .button { width: 100%; cursor: pointer; font-family: inherit; }
.button:disabled, .button[aria-disabled="true"] { background: var(--surface-sunken); color: var(--text-tertiary); cursor: default; }
.demo__grund { font-size: 13px; line-height: 18px; color: var(--text-secondary); text-align: center; }

.rueckmeldung {
  margin-top: var(--s20); display: grid; grid-template-columns: 28px 1fr auto; gap: var(--s12); align-items: center;
  padding: 14px; border-radius: var(--r-card); border: 1px solid var(--correct-line); background: var(--correct-fill);
}
.rueckmeldung:focus { outline: none; }
.rueckmeldung:focus-visible { outline: 2px solid var(--focus-ring); outline-offset: 2px; }
.rueckmeldung__symbol { width: 28px; height: 28px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; background: var(--correct); color: var(--surface); }
.rueckmeldung__symbol svg { width: 16px; height: 16px; }
.rueckmeldung__wort { font-weight: 600; font-size: 17px; line-height: 22px; color: var(--correct); }
.rueckmeldung__satz { font-size: 15px; line-height: 20px; color: var(--text-primary); }
.rueckmeldung__punkte { font-family: var(--font-mono); font-size: 13px; line-height: 18px; color: var(--text-primary); white-space: nowrap; align-self: start; margin-top: 2px; }
.rueckmeldung--falsch { border-color: var(--incorrect-line); background: var(--incorrect-fill); }
.rueckmeldung--falsch .rueckmeldung__symbol { background: var(--incorrect); }
.rueckmeldung--falsch .rueckmeldung__wort { color: var(--incorrect); }

.erklaerung { margin-top: var(--s24); }
.erklaerung > .label { margin-bottom: var(--s8); }
.erklaerung > p { font-size: 17px; line-height: 26px; }
.erklaerung .label + .quelle { margin-top: 0; }
.erklaerung > .label:not(:first-child) { margin-top: var(--s24); }
.quelle { border: 1px solid var(--separator); border-radius: var(--r-card); background: var(--surface); }
.quelle__kopf {
  width: 100%; min-height: 52px; display: flex; justify-content: space-between; align-items: center; gap: var(--s12);
  padding: var(--s12) var(--s16); background: none; border: 0; cursor: pointer; text-align: left; color: var(--text-primary);
  font-family: var(--font-mono); font-size: 15px; line-height: 20px; font-weight: 500; border-radius: var(--r-card);
}
.quelle__kopf::after {
  content: ""; flex: none; width: 9px; height: 9px; margin-right: 4px;
  border-right: 2px solid var(--text-tertiary); border-bottom: 2px solid var(--text-tertiary);
  transform: rotate(45deg) translate(-2px, -2px); transition: transform var(--d-disclosure) var(--ease-smooth);
}
.quelle__kopf[aria-expanded="true"]::after { transform: rotate(-135deg) translate(-2px, -2px); }
.quelle__zitat { padding: 0 var(--s16) var(--s16); color: var(--text-secondary); font-size: 15px; line-height: 22px; }
.quelle__stand { margin-top: var(--s8); font-size: 13px; line-height: 18px; color: var(--text-tertiary); }
.demo__nochmal { margin-top: var(--s16); }
.text-button {
  display: inline-flex; align-items: center; min-height: 44px; padding: 0; background: none; border: 0; cursor: pointer;
  color: var(--accent); font: inherit; font-size: 17px; font-weight: 600;
}
.text-button:hover { color: var(--accent-pressed); }
.js .is-eingeblendet { animation: einblenden var(--d-explanation) var(--ease-smooth) both; }
@keyframes einblenden { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* Drei Beweise */
.proofs { list-style: none; display: grid; gap: var(--s12); }
.proofs .card + .card { margin-top: 0; }
.proof { display: grid; gap: var(--s8); align-content: start; height: 100%; }
.proof .label { margin-bottom: 0; }
.proof .proof__zahl {
  font-family: var(--font-mono); font-size: 48px; line-height: 52px; font-weight: 500; letter-spacing: -0.03em; color: var(--text-primary);
  display: flex; align-items: baseline; gap: var(--s8); flex-wrap: wrap;
}
.proof .proof__zahl small { font-family: var(--font-text); font-size: 17px; line-height: 22px; letter-spacing: 0; color: var(--text-secondary); font-weight: 400; }
.proof h3 { margin-top: var(--s4); }
.proof p:not([class]) { color: var(--text-secondary); font-size: 15px; line-height: 22px; }
.proof .chip { align-self: center; }
.balken { position: relative; height: 10px; margin: var(--s4) 0 var(--s4); }
.balken__spur, .balken__wert {
  position: absolute; inset: 0;
  -webkit-mask: repeating-linear-gradient(90deg, #000 0 calc(5% - 3px), transparent calc(5% - 3px) 5%);
  mask: repeating-linear-gradient(90deg, #000 0 calc(5% - 3px), transparent calc(5% - 3px) 5%);
}
.balken__spur { background: var(--surface-sunken); }
.balken__wert { background: var(--accent); clip-path: inset(0 calc(100% - var(--wert, 0%)) 0 0); }
.js .balken__wert { clip-path: inset(0 100% 0 0); transition: clip-path var(--d-progress) var(--ease-smooth) 150ms; }
.js .balken.is-gefuellt .balken__wert { clip-path: inset(0 calc(100% - var(--wert, 0%)) 0 0); }
.balken-skala { display: flex; justify-content: space-between; font-family: var(--font-mono); font-size: 12px; line-height: 16px; color: var(--text-secondary); }
.rechenweg { margin-top: var(--s8); border-top: 1px solid var(--separator-inner); }
.rechenweg summary {
  list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: var(--s12);
  min-height: 44px; padding-top: var(--s8); font-weight: 600; font-size: 15px; color: var(--text-primary);
}
.rechenweg summary::-webkit-details-marker { display: none; }
.rechenweg summary::after {
  content: ""; flex: none; width: 8px; height: 8px; margin-right: 4px;
  border-right: 2px solid var(--text-tertiary); border-bottom: 2px solid var(--text-tertiary);
  transform: rotate(-45deg); transition: transform var(--d-disclosure) var(--ease-smooth);
}
.rechenweg[open] summary::after { transform: rotate(45deg); }
.rechenweg p { margin-top: var(--s4); }

/* Startseite: App-Karten */
.apps { display: grid; gap: var(--s16); }
.apps .card + .card { margin-top: 0; }
.app-card--screen { grid-template-columns: 1fr; }
.app-card__screen { width: 148px; }
.app-card--bald { align-content: start; }
.app-card__icon-bald { width: 56px; height: 56px; flex: none; border-radius: 12px; border: 1px dashed var(--text-tertiary); display: flex; align-items: center; justify-content: center; font-family: var(--font-mono); font-size: 15px; font-weight: 500; color: var(--text-secondary); }

/* Karten: Hover nur als feine Linie in Kobalt */
@media (hover: hover) {
  .card { transition: border-color var(--d-select) var(--ease-out); }
  .card:hover, .faq details:hover { border-color: var(--accent); }
  .shot:hover .device { border-color: var(--accent); }
  .faq details { transition: border-color var(--d-select) var(--ease-out); }
}

/* Einblenden beim Scrollen: einmal, höchstens drei Elemente gestaffelt */
.js [data-reveal] { opacity: 0; transform: translateY(12px); transition: opacity var(--d-explanation) var(--ease-smooth), transform var(--d-explanation) var(--ease-smooth); transition-delay: calc(var(--i, 0) * var(--stagger)); }
.js [data-reveal].is-sichtbar { opacity: 1; transform: none; }

@media (min-width: 720px) {
  .proofs { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--s16); }
  .apps { grid-template-columns: 3fr 2fr; align-items: stretch; }
  .app-card--screen { grid-template-columns: 1fr 148px; align-items: start; }
  .app-card--screen .app-card__screen { grid-row: 1 / span 3; grid-column: 2; }
  .app-card--screen > :not(.app-card__screen) { grid-column: 1; }
  .demo { padding: var(--s24); }
}
@media (min-width: 900px) {
  .hero--product .wrap { grid-template-columns: minmax(0, 1fr) 300px; gap: var(--s64); }
  .hero--product h1 br { display: inline; }
  .hero__device { width: 300px; }
  .gallery { grid-auto-flow: initial; grid-auto-columns: initial; grid-template-columns: repeat(5, minmax(0, 1fr)); overflow: visible; margin: 0; padding: var(--s4) 0 0; gap: var(--s24); }
  .gallery-hint { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .js .hero__device, .js .is-eingeblendet { animation: none; }
  .js [data-reveal] { opacity: 1; transform: none; transition: none; }
  .js .balken__wert { transition: none; clip-path: inset(0 calc(100% - var(--wert, 0%)) 0 0); }
  .option, .option__mark, .quelle__kopf::after, .rechenweg summary::after, .card, .device, .faq details { transition: none; }
  .gallery { scroll-behavior: auto; }
}

@media print {
  .site-header nav, .skip { display: none; }
  body { background: #fff; color: #000; }
}