/* ============================================================
   KRAFT — Design System
   Haltung: Apple (Ruhe, Luft, Präzision) × Jung von Matt
   (Behauptung, Typo-Attitüde, Kante). Ein Akzent. Kein Zierrat.
   Schrift: Archivo — industrieller Grotesk, passend zur Wortmarke.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Archivo:ital,wght@0,400..900;1,400..900&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root {
  /* Fläche — sehr dunkles Grau, nicht Schwarz */
  --ink:        #101010;
  --ink-2:      #171717;
  --ink-3:      #1e1e1e;
  --line:       rgba(255,255,255,.10);
  --line-soft:  rgba(255,255,255,.06);

  /* Schrift */
  --fg:         #ededed;
  --fg-2:       rgba(237,237,237,.64);
  --fg-3:       rgba(237,237,237,.40);

  /* Akzent — genau einer */
  --signal:     #ff4b12;
  --signal-dim: rgba(255,75,18,.14);

  /* Papier-Inversion — helles Grau, nicht Weiß */
  --paper:      #e4e4e4;
  --paper-ink:  #101010;

  /* Schlagzeilen */
  --sans: 'Archivo', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
  /* Lauftext und Beschriftungen — CJK fällt dahinter auf Systemschriften */
  --body: 'JetBrains Mono',
          'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', 'Noto Sans JP',
          'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC',
          ui-monospace, SFMono-Regular, Menlo, monospace;
  /* Code und Terminal — dieselbe Schrift, eigener Name für die Rolle */
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --gutter: clamp(16px, 5vw, 80px);
  --max:    1320px;
  --ease:   cubic-bezier(.2,.8,.2,1);
  --out:    cubic-bezier(.16,1,.3,1);
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--fg);
  font-family: var(--body);
  font-size: 14.5px;
  line-height: 1.68;
  letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

::selection { background: var(--signal); color: #fff; }

/* ---------- Raster ---------- */

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }
.wrap--narrow { max-width: 900px; }

section { position: relative; }
.band { padding: clamp(80px, 12vh, 180px) 0; border-top: 1px solid var(--line-soft); }
.band--tight { padding: clamp(56px, 8vh, 110px) 0; }
.band--paper { background: var(--paper); color: var(--paper-ink); border-top: none; }
.band--paper .eyebrow { color: rgba(16,16,16,.45); }
.band--paper .lede,
.band--paper .body-2 { color: rgba(16,16,16,.66); }
.band--paper .rule { background: rgba(16,16,16,.12); }

/* ---------- Typografie ---------- */

.eyebrow {
  font-family: var(--body);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: .17em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin: 0 0 clamp(20px, 3vw, 36px);
  display: flex; align-items: center; gap: 12px;
}
.eyebrow::before {
  content: ''; width: 20px; height: 2px; background: var(--signal); flex: none;
  transform: skewX(-18deg);        /* Schrägung der Wortmarke */
  transform-origin: left center;
}

h1, h2, h3, h4,
.display, .h2, .h3, .h4, .claim, .foot__claim,
.stat__n, .pipe__name, .principle h3, .card h3 {
  font-family: var(--sans);
}
h1, h2, h3, h4 { margin: 0; font-weight: 800; letter-spacing: -0.035em; line-height: .96; }

.display {
  font-size: clamp(44px, 9.2vw, 132px);
  font-weight: 900;
  letter-spacing: -0.045em;
  line-height: .9;
}
/* Signatur: das betonte Wort trägt die Schrägung der Wortmarke */
.display strong, .claim em {
  font-weight: 900; font-style: italic; color: var(--signal);
}
.h2 { font-size: clamp(32px, 5.4vw, 76px); line-height: .95; letter-spacing: -0.04em; font-weight: 900; }
.h3 { font-size: clamp(22px, 2.6vw, 34px); line-height: 1.08; letter-spacing: -0.03em; font-weight: 700; }
.h4 { font-size: clamp(17px, 1.5vw, 20px); line-height: 1.25; letter-spacing: -0.02em; font-weight: 700; }

.lede {
  font-size: clamp(15px, 1.4vw, 18.5px);
  line-height: 1.6;
  letter-spacing: -0.01em;
  color: var(--fg-2);
  max-width: 34ch;
  margin: clamp(22px, 3vw, 34px) 0 0;
}
.lede--wide { max-width: 44ch; }

.body-2 { color: var(--fg-2); margin: 16px 0 0; max-width: 56ch; font-size: 13.5px; }
.small { font-size: 14.5px; line-height: 1.5; color: var(--fg-3); }

.mono { font-family: var(--mono); font-size: 13px; letter-spacing: -0.01em; }
.sig { color: var(--signal); }

.rule { height: 1px; background: var(--line); border: 0; margin: 0; }

/* ---------- Wortmarke ---------- */

.brand {
  display: inline-flex; align-items: center;
  text-decoration: none;
  padding: 6px 2px;
}
.brand__logo {
  display: block;
  width: 54px; height: 26px;                 /* 1987 : 958 ≈ 2.074 */
  background: var(--fg);
  -webkit-mask: url('assets/kraft-logo.png') left center / contain no-repeat;
          mask: url('assets/kraft-logo.png') left center / contain no-repeat;
  transition: background .35s var(--ease), transform .35s var(--out);
}
.brand:hover .brand__logo { background: var(--signal); transform: translateX(2px); }

/* ---------- Navigation ---------- */

.nav {
  position: sticky; top: 0; z-index: 60;
  background: rgba(16,16,16,.6);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: background .4s var(--ease), border-color .4s var(--ease);
}
.nav--scrolled {
  background: rgba(16,16,16,.84);
  border-bottom-color: var(--line-soft);
  backdrop-filter: saturate(180%) blur(22px);
  -webkit-backdrop-filter: saturate(180%) blur(22px);
}
.nav__in {
  max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter);
  height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px;
  transition: height .4s var(--ease);
}
.nav--scrolled .nav__in { height: 58px; }
.nav__links { display: flex; align-items: center; gap: clamp(14px, 2.4vw, 32px); }
.nav__links > a {
  position: relative;
  color: var(--fg-2); text-decoration: none;
  font-size: 12.5px; font-weight: 400; letter-spacing: .01em;
  transition: color .25s var(--ease);
  white-space: nowrap; padding: 4px 0;
}
.nav__links > a::after {
  content: ''; position: absolute; left: 0; bottom: 0; height: 2px; width: 100%;
  background: var(--signal); transform: scaleX(0) skewX(-18deg); transform-origin: left center;
  transition: transform .4s var(--out);
}
.nav__links > a:hover { color: var(--fg); }
.nav__links > a:hover::after,
.nav__links > a[aria-current="page"]::after { transform: scaleX(1) skewX(-18deg); }
.nav__links > a[aria-current="page"] { color: var(--fg); }
@media (max-width: 720px) {
  .nav__links { gap: 14px; }
  .nav__links > a { font-size: 13px; }
  .nav__links .nav__hide { display: none; }
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: clamp(72px, 15vh, 190px) 0 clamp(64px, 10vh, 130px);
  overflow: hidden;
}
.hero__grid {
  position: absolute; inset: -10%; pointer-events: none;
  background-image:
    linear-gradient(to right, var(--line-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-soft) 1px, transparent 1px);
  background-size: 88px 88px;
  mask-image: radial-gradient(120% 90% at 70% 0%, #000 0%, transparent 72%);
  -webkit-mask-image: radial-gradient(120% 90% at 70% 0%, #000 0%, transparent 72%);
  opacity: .8;
  will-change: transform;
}
.hero__glow {
  position: absolute; top: -30%; right: -10%;
  width: 70vw; height: 70vw; max-width: 900px; max-height: 900px;
  background: radial-gradient(circle, rgba(255,75,18,.22) 0%, transparent 62%);
  filter: blur(40px); pointer-events: none;
  will-change: transform;
}
/* Die Berechnung, die durch das Bild fließt */
.hero__flow {
  position: absolute; inset: 0; width: 100%; height: 100%;
  pointer-events: none; opacity: 0;
  transition: opacity 1.6s var(--ease);
}
.hero__flow.on { opacity: 1; }
.hero .wrap { position: relative; z-index: 2; }

.hero__meta {
  margin-top: clamp(40px, 6vw, 72px);
  display: grid; gap: 1px;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}
.hero__meta div { background: var(--ink); padding: 18px 20px; transition: background .3s var(--ease); }
.hero__meta div:hover { background: var(--ink-2); }
.hero__meta dt { font-family: var(--body); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--fg-3); }
.hero__meta dd { margin: 10px 0 0; font-size: 12.5px; font-weight: 500; letter-spacing: -0.005em; line-height: 1.5; }

/* ---------- Buttons ---------- */

.btns { display: flex; flex-wrap: wrap; gap: 12px; margin-top: clamp(30px, 4vw, 44px); }
.btn {
  position: relative; overflow: hidden;
  /* <button> bekommt sonst den hellen UA-Standardhintergrund: helle Schrift
     auf hellem Grund. <a> fiel das nie auf, weil es dort transparent ist. */
  -webkit-appearance: none; appearance: none;
  background: transparent;
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 24px; border-radius: 999px;
  font-size: 12.5px; font-weight: 500; letter-spacing: .03em;
  text-decoration: none; border: 1px solid transparent;
  transition: transform .4s var(--out), background .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
  will-change: transform;
}
.btn > * { position: relative; z-index: 1; }
.btn:active { transform: scale(.97) !important; }
.btn--primary { background: var(--signal); color: #fff; }
.btn--primary:hover { background: #ff6634; }
.btn--ghost { border-color: var(--line); color: var(--fg); }
.btn--ghost:hover { border-color: rgba(237,237,237,.34); background: rgba(237,237,237,.05); }
.band--paper .btn--ghost { border-color: rgba(16,16,16,.2); color: var(--paper-ink); }
.band--paper .btn--ghost:hover { border-color: rgba(16,16,16,.45); background: rgba(16,16,16,.05); }
.btn__arrow { transition: transform .35s var(--out); display: inline-block; }
.btn:hover .btn__arrow { transform: translateX(4px); }

/* ---------- Split / Kolumnen ---------- */

.split {
  display: grid; gap: clamp(28px, 5vw, 80px);
  grid-template-columns: minmax(0, 1fr);
  align-items: start;
}
@media (min-width: 900px) {
  .split { grid-template-columns: minmax(0, .82fr) minmax(0, 1fr); }
  .split--even { grid-template-columns: 1fr 1fr; }
}

.cols {
  display: grid; gap: clamp(24px, 3vw, 40px);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr));
  margin-top: clamp(40px, 6vw, 72px);
}
.col__num {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: .12em;
  color: var(--signal); display: block; margin-bottom: 14px;
}

/* ---------- Gegenüberstellung ---------- */

.versus {
  margin-top: clamp(40px, 6vw, 72px);
  border: 1px solid var(--line);
  display: grid; grid-template-columns: 1fr; gap: 1px; background: var(--line-soft);
}
@media (min-width: 760px) { .versus { grid-template-columns: 1fr 1fr; } }
.versus__head {
  background: var(--ink-2); padding: 16px 22px;
  font-family: var(--mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--fg-3);
}
.versus__head--on { color: var(--signal); }
.versus__cell {
  background: var(--ink); padding: 16px 22px; font-size: 13px; letter-spacing: -0.005em; line-height: 1.5;
  transition: background .3s var(--ease), color .3s var(--ease);
}
.versus__cell--off { color: var(--fg-3); text-decoration: line-through; text-decoration-color: rgba(237,237,237,.22); }
.versus__cell--on { color: var(--fg); font-weight: 600; }
.versus__cell--on:hover { background: var(--signal-dim); color: var(--signal); }

/* ---------- Pipeline ---------- */

.pipe { margin-top: clamp(40px, 6vw, 72px); border-top: 1px solid var(--line); position: relative; }
.pipe__track {
  position: absolute; left: 0; top: 0; width: 2px; height: 100%;
  background: var(--line-soft); pointer-events: none;
}
.pipe__track::after {
  content: ''; position: absolute; inset: 0 auto 0 0; width: 2px;
  height: var(--p, 0%); background: var(--signal);
  transition: height .18s linear;
}
.pipe__row {
  display: grid; grid-template-columns: 54px 1fr; gap: 0 20px;
  padding: 18px 0 18px 18px; border-bottom: 1px solid var(--line-soft);
  align-items: baseline;
  transition: background .3s var(--ease), padding-left .35s var(--out);
}
@media (min-width: 820px) { .pipe__row { grid-template-columns: 54px 260px 1fr; } }
.pipe__row:hover { background: rgba(237,237,237,.025); padding-left: 26px; }
.pipe__i { font-family: var(--body); font-size: 12px; color: var(--fg-3); transition: color .3s var(--ease); }
.pipe__row:hover .pipe__i { color: var(--signal); }
.pipe__name { font-weight: 800; font-size: clamp(17px, 1.8vw, 21px); letter-spacing: -0.025em; }
.pipe__desc { color: var(--fg-2); font-size: 13px; line-height: 1.6; grid-column: 2 / -1; margin-top: 6px; }
@media (min-width: 820px) { .pipe__desc { grid-column: 3; margin-top: 0; } }
.pipe__row--out .pipe__name { color: var(--signal); }
.band--paper .pipe__track { background: rgba(16,16,16,.1); }
.band--paper .pipe__row:hover { background: rgba(16,16,16,.03); }

/* ---------- Karten ---------- */

.cards {
  display: grid; gap: 1px; background: var(--line-soft);
  border: 1px solid var(--line-soft);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  margin-top: clamp(40px, 6vw, 72px);
}
.card {
  background: var(--ink); padding: clamp(24px, 3vw, 38px);
  position: relative; transition: background .35s var(--ease);
}
.card::before {
  content: ''; position: absolute; left: 0; top: 0; height: 2px; width: 100%;
  background: var(--signal); transform: scaleX(0); transform-origin: left center;
  transition: transform .5s var(--out);
}
.card:hover { background: var(--ink-2); }
.card:hover::before { transform: scaleX(1); }
.card__k { font-family: var(--body); font-size: 11px; letter-spacing: .13em; text-transform: uppercase; color: var(--signal); }
.card h3 { margin: 16px 0 0; font-size: 21px; letter-spacing: -0.028em; line-height: 1.1; font-weight: 800; }
.card p { margin: 12px 0 0; color: var(--fg-2); font-size: 13px; line-height: 1.65; }
.card ul { margin: 14px 0 0; padding: 0; list-style: none; }
.card li { color: var(--fg-2); font-size: 12.5px; padding: 5px 0 5px 18px; position: relative; }
.card li::before { content: ''; position: absolute; left: 0; top: 13px; width: 7px; height: 2px; background: var(--signal); transform: skewX(-18deg); }

/* ---------- Zitat / Claim-Band ---------- */

.claimband { padding: clamp(80px, 14vh, 190px) 0; }
.claim {
  font-size: clamp(30px, 6vw, 80px);
  font-weight: 900; letter-spacing: -0.045em; line-height: .96;
  max-width: 18ch; margin: 0;
}
.claim--paper { color: var(--paper-ink); }
.claim__by { margin-top: 28px; font-family: var(--mono); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--fg-3); }
.band--paper .claim__by { color: rgba(16,16,16,.4); }

/* ---------- Kennzahlen ---------- */

.stats {
  display: grid; gap: clamp(24px, 4vw, 56px);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr));
  margin-top: clamp(40px, 6vw, 72px);
}
.stat__n {
  font-size: clamp(42px, 6vw, 78px); font-weight: 900;
  letter-spacing: -0.05em; line-height: .88;
  font-variant-numeric: tabular-nums;
}
.stat__l { margin-top: 16px; color: var(--fg-2); font-size: 12.5px; max-width: 32ch; line-height: 1.58; }

/* ---------- Terminal ---------- */

.term {
  margin-top: clamp(32px, 4vw, 52px);
  background: var(--ink-2); border: 1px solid var(--line);
  border-radius: 10px; overflow: hidden;
}
.term__bar {
  display: flex; align-items: center; gap: 7px;
  padding: 12px 16px; border-bottom: 1px solid var(--line-soft);
}
.term__dot { width: 9px; height: 9px; border-radius: 50%; background: rgba(237,237,237,.14); }
.term__t { margin-left: 8px; font-family: var(--mono); font-size: 11.5px; color: var(--fg-3); }
.term pre {
  margin: 0; padding: 20px 16px 24px; overflow-x: auto;
  font-family: var(--mono); font-size: 12.5px; line-height: 1.75; color: var(--fg-2);
}
.term .c-sig { color: var(--signal); }
.term .c-ok  { color: #5fd08a; }
.term .c-dim { color: var(--fg-3); }
/* zeilenweiser Einlauf */
.term--type pre .ln-t { display: block; opacity: 0; transform: translateX(-6px); }
.term--type.in pre .ln-t { animation: lnIn .45s var(--out) forwards; }
@keyframes lnIn { to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) {
  .term--type pre .ln-t { opacity: 1; transform: none; animation: none; }
}

/* ---------- Node-Diagramm ---------- */

.nodes { margin-top: clamp(40px, 6vw, 72px); }
.nodes svg { width: 100%; height: auto; display: block; }
.nd-wire { stroke-dasharray: 1000; stroke-dashoffset: 1000; }
.rv.in .nd-wire { animation: draw 1.6s var(--ease) forwards; }
.rv.in .nd-wire:nth-of-type(2) { animation-delay: .2s; }
@keyframes draw { to { stroke-dashoffset: 0; } }
@media (prefers-reduced-motion: reduce) { .nd-wire { stroke-dashoffset: 0; } }

/* ---------- Prinzipien-Liste ---------- */

.principles { margin-top: clamp(40px, 6vw, 72px); border-top: 1px solid var(--line); }
.principle {
  padding: clamp(24px, 3vw, 38px) 0; border-bottom: 1px solid var(--line-soft);
  display: grid; gap: 8px clamp(24px, 5vw, 64px); grid-template-columns: 1fr;
  transition: padding-left .4s var(--out);
}
@media (min-width: 860px) { .principle { grid-template-columns: minmax(0, .5fr) minmax(0, 1fr); align-items: baseline; } }
.principle:hover { padding-left: 14px; }
.principle h3 { font-size: clamp(22px, 2.8vw, 36px); letter-spacing: -0.035em; font-weight: 900; transition: color .3s var(--ease); }
.principle:hover h3 { color: var(--signal); }
.principle p { margin: 0; color: var(--fg-2); font-size: 13.5px; }

/* ---------- Footer ---------- */

.foot { border-top: 1px solid var(--line); padding: clamp(48px, 7vw, 90px) 0 40px; overflow: hidden; }
.foot__top { display: grid; gap: 40px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr)); }
.foot__claim { font-size: clamp(24px, 3.4vw, 42px); font-weight: 900; letter-spacing: -0.04em; line-height: 1; max-width: 14ch; }
.foot h4 { font-family: var(--body); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--fg-3); font-weight: 500; margin-bottom: 16px; }
.foot ul { margin: 0; padding: 0; list-style: none; }
.foot li { margin-bottom: 9px; }
.foot a { color: var(--fg-2); text-decoration: none; font-size: 12.5px; transition: color .25s var(--ease); }
.foot a:hover { color: var(--signal); }
.foot__bot {
  margin-top: clamp(48px, 7vw, 90px); padding-top: 24px; border-top: 1px solid var(--line-soft);
  display: flex; flex-wrap: wrap; gap: 12px 28px; justify-content: space-between;
  font-family: var(--mono); font-size: 11.5px; color: var(--fg-3);
}

/* ---------- Reveal ---------- */

.rv { opacity: 0; transform: translateY(18px); transition: opacity .8s var(--out), transform .8s var(--out); }
.rv.in { opacity: 1; transform: none; }

/* Zeilenweiser Aufzug für Schlagzeilen */
.rv.is-lines { opacity: 1; transform: none; }
.ln { display: block; overflow: hidden; padding-bottom: .06em; }
.ln__i { display: block; transform: translateY(110%); transition: transform 1s var(--out); }
.is-lines.in .ln__i { transform: none; }

@media (prefers-reduced-motion: reduce) {
  .rv { opacity: 1; transform: none; }
  .ln__i { transform: none; }
}

/* Stapelfolge im Hero: Raster → Atome → Glut → Text */
.hero__grid { z-index: 0; }
.hero__flow { z-index: 1; }
.hero__glow { z-index: 1; }

/* ---------- Sprachumschalter ---------- */

.lang { position: relative; margin-left: 6px; }

.lang__btn {
  display: inline-flex; align-items: center; gap: 7px;
  background: transparent; border: 1px solid var(--line);
  color: var(--fg-2); cursor: pointer;
  font-family: var(--body); font-size: 12px; letter-spacing: .1em;
  padding: 7px 11px; border-radius: 999px;
  transition: color .25s var(--ease), border-color .25s var(--ease), background .25s var(--ease);
}
.lang__btn:hover { color: var(--fg); border-color: rgba(237,237,237,.34); }
.lang.open .lang__btn { color: var(--fg); border-color: var(--signal); }

.lang__chev {
  width: 7px; height: 7px; flex: none;
  border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor;
  transform: translateY(-2px) rotate(45deg);
  transition: transform .3s var(--out);
}
.lang.open .lang__chev { transform: translateY(1px) rotate(-135deg); }

.lang__menu {
  position: absolute; top: calc(100% + 10px); right: 0;
  min-width: 190px; margin: 0; padding: 6px; list-style: none;
  background: rgba(20,20,20,.94);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border: 1px solid var(--line); border-radius: 12px;
  opacity: 0; visibility: hidden;
  transform: translateY(-8px) scale(.97); transform-origin: top right;
  transition: opacity .28s var(--out), transform .28s var(--out), visibility .28s;
  z-index: 80;
  box-shadow: 0 24px 60px rgba(0,0,0,.6);
}
.lang.open .lang__menu { opacity: 1; visibility: visible; transform: none; }

.lang__opt {
  display: flex; align-items: center; gap: 12px; width: 100%;
  background: transparent; border: 0; cursor: pointer; text-align: left;
  color: var(--fg-2); font-family: var(--body); font-size: 13px;
  padding: 9px 11px; border-radius: 7px;
  transition: background .2s var(--ease), color .2s var(--ease);
}
.lang__opt:hover { background: rgba(237,237,237,.06); color: var(--fg); }
.lang__abbr {
  font-size: 10.5px; letter-spacing: .12em; color: var(--fg-3);
  min-width: 22px; transition: color .2s var(--ease);
}
.lang__opt:hover .lang__abbr { color: var(--fg-2); }
.lang__opt.is-on { color: var(--signal); }
.lang__opt.is-on .lang__abbr { color: var(--signal); }
.lang__opt.is-on::after {
  content: ''; margin-left: auto; width: 13px; height: 2px;
  background: var(--signal); transform: skewX(-18deg);
}

@media (max-width: 720px) {
  .lang__btn { padding: 6px 9px; font-size: 11px; }
  .lang__menu { min-width: 168px; }
}

/* CJK: die Wortmarkenschrift hat keine Glyphen — Laufweite anpassen */
:root[data-lang="zh"], :root[data-lang="ja"] { --body-cjk: 1; }
:root[data-lang="zh"] body, :root[data-lang="ja"] body { line-height: 1.8; }
:root[data-lang="zh"] .lede, :root[data-lang="ja"] .lede { line-height: 1.7; max-width: 26ch; }
:root[data-lang="zh"] .body-2, :root[data-lang="ja"] .body-2 { max-width: 40ch; }