:root {
  color-scheme: light dark;

  /* Color system · Wannsee Signal */
  --bg: #f2f6f7;
  --surface: #ffffff;
  --surface-2: #e7eef1;
  --surface-3: #dce8eb;
  --text: #0b1f33;
  --muted: #516f7d;
  --muted-strong: #345562;
  --primary: #117b8e;
  --primary-strong: #075f70;
  --primary-soft: #d8eef1;
  --primary-contrast: #ffffff;
  --accent: #f5b700;
  --accent-soft: #fff2bf;
  --border: #cfdde1;
  --border-strong: #a9c1c9;
  --focus: #805500;
  --success: #19714e;
  --danger: #b13a3a;
  --ink: #061522;

  /* Elevation and shape */
  --shadow-sm: 0 8px 24px rgba(11, 31, 51, .06);
  --shadow: 0 20px 60px rgba(11, 31, 51, .10);
  --shadow-strong: 0 28px 80px rgba(11, 31, 51, .15);
  --radius-xs: .4rem;
  --radius-sm: .65rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;

  /* Layout */
  --content: 76rem;
  --content-wide: 84rem;
  --text-width: 46rem;
  --header-height: 4.75rem;

  /* 4 px spacing system */
  --s1: .25rem;
  --s2: .5rem;
  --s3: .75rem;
  --s4: 1rem;
  --s5: 1.5rem;
  --s6: 2rem;
  --s7: 3rem;
  --s8: 4rem;
  --s9: 6rem;
  --s10: 8rem;

  /* Typography */
  --font-sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #07131e;
    --surface: #0d2030;
    --surface-2: #142b3b;
    --surface-3: #1a3445;
    --text: #edf5f6;
    --muted: #9eb6c0;
    --muted-strong: #c2d3d9;
    --primary: #57c5cb;
    --primary-strong: #83d9dc;
    --primary-soft: #173b45;
    --primary-contrast: #06151b;
    --accent: #f5c842;
    --accent-soft: #463a10;
    --border: #294351;
    --border-strong: #3e5c69;
    --focus: #ffd967;
    --success: #79d8ae;
    --danger: #ff9494;
    --ink: #020b12;
    --shadow-sm: 0 10px 28px rgba(0, 0, 0, .18);
    --shadow: 0 22px 64px rgba(0, 0, 0, .28);
    --shadow-strong: 0 30px 90px rgba(0, 0, 0, .36);
  }
}

:root[data-theme="dark"] {
  --bg: #07131e;
  --surface: #0d2030;
  --surface-2: #142b3b;
  --surface-3: #1a3445;
  --text: #edf5f6;
  --muted: #9eb6c0;
  --muted-strong: #c2d3d9;
  --primary: #57c5cb;
  --primary-strong: #83d9dc;
  --primary-soft: #173b45;
  --primary-contrast: #06151b;
  --accent: #f5c842;
  --accent-soft: #463a10;
  --border: #294351;
  --border-strong: #3e5c69;
  --focus: #ffd967;
  --success: #79d8ae;
  --danger: #ff9494;
  --ink: #020b12;
  --shadow-sm: 0 10px 28px rgba(0, 0, 0, .18);
  --shadow: 0 22px 64px rgba(0, 0, 0, .28);
  --shadow-strong: 0 30px 90px rgba(0, 0, 0, .36);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 1rem); }
body {
  margin: 0;
  min-width: 20rem;
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.62;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; height: auto; }
a { color: var(--primary-strong); text-underline-offset: .2em; }
a:hover { text-decoration-thickness: .14em; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }
::selection { background: var(--accent); color: #0b1f33; }

.skip-link {
  position: absolute;
  left: 1rem;
  top: -6rem;
  z-index: 999;
  padding: .75rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--text);
  color: var(--bg);
  text-decoration: none;
}
.skip-link:focus { top: 1rem; }

.container { width: min(calc(100% - 2rem), var(--content)); margin-inline: auto; }
.container--wide { width: min(calc(100% - 2rem), var(--content-wide)); margin-inline: auto; }
.prose { max-width: var(--text-width); }
.section { padding: var(--s8) 0; }
.section--tight { padding: var(--s6) 0; }
.section--surface { background: var(--surface); border-block: 1px solid var(--border); }
.section--ink { background: var(--ink); color: #eef5f6; }
.section--ink .muted { color: #a8bdc5; }
.section--ink .eyebrow { color: #70d0d4; }
.section-head { display: grid; gap: var(--s4); margin-bottom: var(--s7); }
.section-head__intro { max-width: 43rem; }
.section-number { font-family: var(--font-mono); color: var(--primary-strong); font-weight: 800; font-size: .78rem; letter-spacing: .08em; }
.stack > * { margin: 0; }
.stack > * + * { margin-top: var(--stack, 1rem); }
.cluster { display: flex; flex-wrap: wrap; gap: var(--gap, .75rem); align-items: center; }
.grid { display: grid; gap: var(--s5); }
.grid--2, .grid--3, .grid--4, .grid--5 { grid-template-columns: 1fr; }

h1, h2, h3, h4 { line-height: 1.08; letter-spacing: -.035em; margin: 0; text-wrap: balance; }
h1 { font-size: clamp(2.65rem, 9vw, 6.1rem); max-width: 14ch; }
h2 { font-size: clamp(2rem, 5.2vw, 3.8rem); max-width: 20ch; }
h3 { font-size: clamp(1.25rem, 3vw, 1.7rem); }
h4 { font-size: 1.05rem; }
p { margin: 0; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: .13em;
  font-size: .75rem;
  line-height: 1.3;
  color: var(--primary-strong);
  font-weight: 800;
}
.eyebrow::before { content: ""; width: 1.5rem; height: 2px; background: currentColor; }
.lead { font-size: clamp(1.08rem, 2.4vw, 1.35rem); color: var(--muted); max-width: 46rem; }
.muted { color: var(--muted); }
.small { font-size: .9rem; }
.mono { font-family: var(--font-mono); }
.text-accent { color: var(--primary-strong); }
.text-highlight { display: inline; box-shadow: inset 0 -.34em 0 var(--accent-soft); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  min-height: var(--header-height);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.nav-wrap { min-height: var(--header-height); display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.brand { display: inline-flex; align-items: center; gap: .72rem; text-decoration: none; color: var(--text); font-weight: 850; letter-spacing: -.03em; }
.brand-mark {
  width: 1.9rem;
  height: 1.9rem;
  border: 2px solid var(--primary);
  border-radius: .58rem;
  position: relative;
  background: var(--surface);
  box-shadow: inset 0 0 0 4px var(--bg);
}
.brand-mark::before { content: ""; position: absolute; inset: .34rem; border: 1px solid var(--border-strong); border-radius: .24rem; }
.brand-mark::after { content: ""; position: absolute; width: .58rem; height: .58rem; background: var(--accent); border: 2px solid var(--bg); border-radius: 50%; right: -.3rem; top: -.3rem; }
.nav-actions { display: flex; gap: .5rem; align-items: center; }
.nav-toggle, .theme-toggle {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: .7rem;
  min-width: 2.75rem;
  min-height: 2.75rem;
}
.nav-toggle:hover, .theme-toggle:hover { border-color: var(--primary); }
.primary-nav {
  display: none;
  position: absolute;
  inset: var(--header-height) 0 auto 0;
  padding: 1rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.primary-nav[data-open="true"] { display: block; }
.primary-nav ul { list-style: none; padding: 0; margin: 0; display: grid; gap: .3rem; }
.primary-nav a { display: block; padding: .75rem 1rem; border-radius: .65rem; color: var(--text); text-decoration: none; font-weight: 680; }
.primary-nav a:hover, .primary-nav a[aria-current="page"] { background: var(--surface-2); }
.primary-nav a[aria-current="page"] { color: var(--primary-strong); }
.nav-cta { display: none; }

.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: .55rem;
  min-height: 3rem;
  padding: .78rem 1.15rem;
  border-radius: .72rem;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 780;
  line-height: 1.2;
  transition: transform .16s ease, background .16s ease, border-color .16s ease;
}
.button:hover { transform: translateY(-1px); text-decoration: none; }
.button--primary { background: var(--primary); color: var(--primary-contrast); box-shadow: 0 8px 18px rgba(17, 123, 142, .18); }
.button--primary:hover { background: var(--primary-strong); }
.button--secondary { color: var(--text); background: var(--surface); border-color: var(--border-strong); }
.button--secondary:hover { border-color: var(--primary); }
.button--text { color: var(--primary-strong); padding-inline: 0; }
.button--text::after { content: "→"; }

/* Homepage hero */
.hero { position: relative; padding: clamp(3.5rem, 8vw, 7rem) 0 var(--s8); overflow: hidden; }
.hero::before, .hero::after { content: ""; position: absolute; z-index: -1; border: 1px solid var(--border); }
.hero::before { width: 18rem; height: 18rem; border-radius: 4rem; right: -9rem; top: 4rem; transform: rotate(12deg); }
.hero::after { width: 12rem; height: 12rem; border-radius: 50%; left: -8rem; bottom: 2rem; }
.hero-grid { display: grid; gap: var(--s7); align-items: center; }
.hero-copy { position: relative; z-index: 2; }
.hero .lead { max-width: 43rem; }
.hero-status {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  padding: .42rem .72rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted-strong);
  font-size: .84rem;
  font-weight: 700;
}
.status-dot { width: .55rem; height: .55rem; border-radius: 50%; background: var(--success); box-shadow: 0 0 0 4px color-mix(in srgb, var(--success) 16%, transparent); }
.hero-proof { display: flex; flex-wrap: wrap; gap: .6rem 1.4rem; padding-top: .25rem; color: var(--muted); font-size: .91rem; }
.hero-proof span { display: inline-flex; align-items: center; gap: .45rem; }
.hero-proof span::before { content: "✓"; color: var(--success); font-weight: 900; }

.system-board {
  position: relative;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-xl);
  padding: .7rem;
  background: var(--surface-2);
  box-shadow: var(--shadow-strong);
  transform: rotate(.35deg);
}
.system-board::before { content: ""; position: absolute; inset: .7rem -.55rem -.55rem .7rem; border: 1px solid var(--border); border-radius: var(--radius-xl); z-index: -1; }
.system-board__window { overflow: hidden; background: var(--surface); border: 1px solid var(--border); border-radius: calc(var(--radius-xl) - .45rem); }
.system-board__bar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 3rem; padding: .65rem .9rem; border-bottom: 1px solid var(--border); background: var(--bg); }
.window-dots { display: flex; gap: .35rem; }
.window-dots span { width: .55rem; height: .55rem; border-radius: 50%; background: var(--border-strong); }
.window-dots span:nth-child(2) { background: var(--accent); }
.system-board__label { font-family: var(--font-mono); font-size: .72rem; color: var(--muted); }
.system-board__body { display: grid; gap: 1px; background: var(--border); }
.board-stage { position: relative; padding: 1rem; background: var(--surface); min-height: 8rem; }
.board-stage__head { display: flex; justify-content: space-between; gap: .75rem; align-items: center; margin-bottom: .8rem; }
.board-stage__head strong { font-size: .9rem; }
.board-index { font-family: var(--font-mono); font-size: .72rem; color: var(--primary-strong); }
.board-chips { display: flex; flex-wrap: wrap; gap: .45rem; }
.board-chip { padding: .42rem .58rem; border: 1px solid var(--border); border-radius: .48rem; background: var(--bg); font-family: var(--font-mono); font-size: .72rem; color: var(--muted-strong); }
.board-chip--active { border-color: var(--primary); color: var(--primary-strong); background: var(--primary-soft); }
.board-review { display: grid; gap: .65rem; }
.review-line { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: .55rem; font-size: .78rem; }
.review-icon { width: 1.65rem; height: 1.65rem; display: grid; place-items: center; border: 1px solid var(--border); border-radius: .45rem; background: var(--surface-2); font-family: var(--font-mono); color: var(--primary-strong); }
.review-bar { height: .45rem; border-radius: 999px; background: var(--surface-2); overflow: hidden; }
.review-bar span { display: block; height: 100%; background: var(--primary); }
.review-state { font-family: var(--font-mono); color: var(--success); font-size: .68rem; }
.board-output { display: grid; grid-template-columns: repeat(3, 1fr); gap: .55rem; }
.output-tile { min-height: 4.2rem; padding: .65rem; border: 1px solid var(--border); border-radius: .6rem; background: var(--bg); }
.output-tile strong { display: block; font-size: .75rem; }
.output-tile span { display: block; color: var(--muted); font-size: .67rem; margin-top: .25rem; }
.system-board__footer { display: flex; justify-content: space-between; align-items: center; gap: .7rem; padding: .7rem .9rem; background: var(--ink); color: #dbe9ec; font-family: var(--font-mono); font-size: .69rem; }
.system-board__footer span:first-child::before { content: "●"; color: #76d6ad; margin-right: .45rem; }

.metric-strip { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; }
.metric { background: var(--surface); padding: 1rem; }
.metric strong { display: block; font-size: 1.1rem; }
.metric span { color: var(--muted); font-size: .9rem; }

/* Diagnostic/problem section */
.diagnostic-grid { display: grid; gap: var(--s7); align-items: start; }
.signal-list { display: grid; border-top: 1px solid var(--border); }
.signal-item { display: grid; grid-template-columns: 2.5rem 1fr; gap: 1rem; padding: 1.1rem 0; border-bottom: 1px solid var(--border); }
.signal-item__index { font-family: var(--font-mono); color: var(--primary-strong); font-size: .78rem; padding-top: .18rem; }
.signal-item strong { display: block; margin-bottom: .2rem; }
.signal-item p { color: var(--muted); font-size: .95rem; }

/* Domains */
.domain-grid { display: grid; gap: var(--s5); }
.domain-card {
  position: relative;
  overflow: hidden;
  display: grid;
  min-height: 31rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}
.domain-card__top { padding: var(--s6); }
.domain-card__number { font-family: var(--font-mono); font-size: .76rem; color: var(--muted); }
.domain-card h3 { font-size: clamp(1.8rem, 4vw, 2.8rem); max-width: 12ch; margin-top: 1rem; }
.domain-card__copy { max-width: 35rem; color: var(--muted); margin-top: 1rem; }
.domain-card__tags { margin-top: 1.25rem; }
.domain-card__panel { align-self: end; margin: 0 .75rem .75rem; padding: 1rem; border-radius: var(--radius-lg); background: var(--bg); border: 1px solid var(--border); }
.domain-card__panel-label { font-family: var(--font-mono); color: var(--muted); font-size: .7rem; text-transform: uppercase; letter-spacing: .08em; }
.domain-card__example { display: grid; grid-template-columns: auto 1fr; gap: .75rem; align-items: center; margin-top: .8rem; padding-top: .8rem; border-top: 1px solid var(--border); }
.domain-card__example:first-of-type { border-top: 0; padding-top: 0; }
.domain-card__icon { width: 2.2rem; height: 2.2rem; display: grid; place-items: center; border-radius: .6rem; background: var(--surface); border: 1px solid var(--border); font-family: var(--font-mono); font-size: .72rem; color: var(--primary-strong); }
.domain-card--kmu { border-top: 5px solid var(--primary); }
.domain-card--sap { border-top: 5px solid var(--accent); }
.domain-card--sap .domain-card__icon { color: #8a6500; }

/* Service rows */
.service-list { border-top: 1px solid var(--border); }
.service-row {
  display: grid;
  gap: .7rem;
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--border);
  color: inherit;
  text-decoration: none;
}
.service-row:hover { text-decoration: none; }
.service-row__index { font-family: var(--font-mono); color: var(--primary-strong); font-size: .78rem; }
.service-row h3 { transition: color .16s ease; }
.service-row:hover h3 { color: var(--primary-strong); }
.service-row p { color: var(--muted); }
.service-row__arrow { font-size: 1.5rem; color: var(--primary-strong); }

/* Cards and legacy components */
.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--s5);
  box-shadow: var(--shadow-sm);
}
.card--interactive { transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease; }
.card--interactive:hover { transform: translateY(-4px); border-color: var(--primary); box-shadow: var(--shadow); }
.card .tag, .tag {
  display: inline-flex;
  align-items: center;
  min-height: 1.75rem;
  padding: .2rem .55rem;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--muted-strong);
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: .73rem;
}
.card-link { color: inherit; text-decoration: none; font-weight: 760; }
.card-link::after { content: " →"; color: var(--primary-strong); }
.icon-badge {
  width: 2.8rem;
  height: 2.8rem;
  display: grid;
  place-items: center;
  border-radius: .8rem;
  background: var(--primary-soft);
  border: 1px solid var(--border);
  color: var(--primary-strong);
  font-family: var(--font-mono);
  font-weight: 850;
  font-size: .78rem;
}

/* Project showcase */
.project-showcase { display: grid; gap: var(--s5); }
.project-card {
  position: relative;
  overflow: hidden;
  min-height: 25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--s5);
  background: var(--surface);
  color: var(--text);
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}
.project-card:hover { transform: translateY(-4px); border-color: var(--primary); box-shadow: var(--shadow); text-decoration: none; }
.project-card__meta { display: flex; justify-content: space-between; gap: 1rem; align-items: flex-start; }
.project-card__type { font-family: var(--font-mono); font-size: .7rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.project-card__arrow { font-size: 1.45rem; color: var(--primary-strong); }
.project-card__visual { position: relative; min-height: 10rem; margin: var(--s5) 0; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--bg); overflow: hidden; }
.visual-window { position: absolute; border: 1px solid var(--border); background: var(--surface); border-radius: .65rem; box-shadow: var(--shadow-sm); }
.visual-window--main { inset: 1.1rem 2.2rem 1.1rem 1.1rem; padding: .8rem; }
.visual-window--float { width: 42%; right: .65rem; bottom: .65rem; padding: .65rem; }
.visual-topbar { display: flex; gap: .25rem; padding-bottom: .55rem; border-bottom: 1px solid var(--border); }
.visual-topbar span { width: .42rem; height: .42rem; border-radius: 50%; background: var(--border-strong); }
.visual-lines { display: grid; gap: .4rem; padding-top: .65rem; }
.visual-lines span { display: block; height: .4rem; border-radius: 999px; background: var(--surface-2); }
.visual-lines span:nth-child(2) { width: 72%; }
.visual-lines span:nth-child(3) { width: 86%; background: var(--primary-soft); }
.visual-stat { font-family: var(--font-mono); font-size: 1.4rem; color: var(--primary-strong); font-weight: 800; }
.visual-stat-label { font-size: .65rem; color: var(--muted); }
.project-card h3 { font-size: clamp(1.6rem, 3vw, 2.25rem); }
.project-card__copy { color: var(--muted); max-width: 36rem; margin-top: .7rem; }
.project-card--featured { background: var(--ink); color: #edf5f6; border-color: #294351; }
.project-card--featured .project-card__type, .project-card--featured .project-card__copy { color: #a8bdc5; }
.project-card--featured .project-card__arrow { color: #72d0d4; }
.project-card--featured .project-card__visual { background: #0d2030; border-color: #294351; }
.project-card--featured .visual-window { background: #142b3b; border-color: #385463; }
.project-card--featured .visual-topbar { border-color: #385463; }
.project-card--featured .visual-lines span { background: #294351; }
.project-card--featured .visual-lines span:nth-child(3) { background: #1d5561; }
.project-card--featured .visual-stat { color: #72d0d4; }
.project-card--featured .visual-stat-label { color: #a8bdc5; }
.project-card--accent { border-top: 5px solid var(--accent); }

/* Principles */
.principle-strip { display: grid; gap: 1px; border: 1px solid var(--border); background: var(--border); border-radius: var(--radius-xl); overflow: hidden; }
.principle { background: var(--surface); padding: var(--s5); }
.principle__number { font-family: var(--font-mono); color: var(--primary-strong); font-size: .74rem; }
.principle h3 { margin-top: .75rem; }
.principle p { color: var(--muted); margin-top: .55rem; }

/* Delivery and about */
.delivery-grid { display: grid; gap: var(--s7); align-items: start; }
.timeline { display: grid; gap: 1rem; counter-reset: step; }
.timeline-item { position: relative; padding: 1.25rem 1.25rem 1.25rem 4.4rem; border: 1px solid var(--border); background: var(--surface); border-radius: var(--radius-lg); }
.timeline-item::before { counter-increment: step; content: counter(step, decimal-leading-zero); position: absolute; left: 1rem; top: 1.22rem; font-family: var(--font-mono); color: var(--primary-strong); font-weight: 850; }
.timeline-item h3 { font-size: 1.12rem; letter-spacing: -.02em; }
.expertise-panel { border: 1px solid var(--border); border-radius: var(--radius-xl); background: var(--surface); overflow: hidden; box-shadow: var(--shadow-sm); }
.expertise-panel__head { display: grid; grid-template-columns: auto 1fr; gap: 1rem; align-items: center; padding: var(--s5); border-bottom: 1px solid var(--border); }
.monogram { width: 4.4rem; height: 4.4rem; display: grid; place-items: center; border-radius: 1.2rem; background: var(--ink); color: #edf5f6; font-family: var(--font-mono); font-size: 1.2rem; font-weight: 850; }
.expertise-panel__body { padding: var(--s5); }
.expertise-facts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; margin-top: var(--s5); }
.expertise-fact { padding: 1rem; background: var(--bg); }
.expertise-fact strong { display: block; }
.expertise-fact span { color: var(--muted); font-size: .82rem; }

/* Subpages */
.breadcrumbs { padding-top: 1rem; font-size: .88rem; color: var(--muted); }
.breadcrumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: .45rem; padding: 0; margin: 0; }
.breadcrumbs li:not(:last-child)::after { content: "/"; margin-left: .45rem; color: var(--border-strong); }
.project-hero { position: relative; padding: clamp(3.5rem, 7vw, 6.5rem) 0 var(--s7); overflow: hidden; }
.project-hero::after { content: ""; position: absolute; right: -6rem; bottom: 1rem; width: 17rem; height: 17rem; border: 1px solid var(--border); border-radius: 4rem; transform: rotate(18deg); z-index: -1; }
.project-hero h1 { max-width: 17ch; }
.project-hero .lead { max-width: 48rem; }
.project-meta { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1rem; }
.architecture { display: grid; gap: .75rem; }
.arch-box { padding: 1rem; border: 1px solid var(--border); border-radius: .8rem; background: var(--surface); box-shadow: var(--shadow-sm); }
.arch-box--highlight { border-color: var(--primary); background: var(--primary-soft); }
.before-after { display: grid; gap: 1rem; }
.before-after article { padding: 1.25rem; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--surface); box-shadow: var(--shadow-sm); }
.before-after ul, .check-list { margin: .75rem 0 0; padding-left: 1.2rem; }
.check-list li + li, .before-after li + li { margin-top: .45rem; }

.notice { border: 1px solid var(--border); border-left: 5px solid var(--accent); border-radius: var(--radius-sm); padding: 1rem 1.2rem; background: var(--surface); box-shadow: var(--shadow-sm); }
.notice--danger { border-left-color: var(--danger); }

form { display: grid; gap: 1rem; }
label { font-weight: 750; }
input, textarea, select { width: 100%; border: 1px solid var(--border-strong); background: var(--surface); color: var(--text); border-radius: .7rem; padding: .82rem .9rem; }
input:focus, textarea:focus, select:focus { border-color: var(--primary); }
textarea { min-height: 8rem; resize: vertical; }
.form-field { display: grid; gap: .35rem; }
.form-actions { display: flex; flex-wrap: wrap; gap: .75rem; }
.generated-message { min-height: 13rem; font-family: var(--font-mono); font-size: .88rem; }

.faq details { border-top: 1px solid var(--border); padding: 1.15rem 0; }
.faq details:last-child { border-bottom: 1px solid var(--border); }
.faq summary { cursor: pointer; font-weight: 780; list-style-position: outside; }
.faq details p { margin-top: .75rem; color: var(--muted); max-width: var(--text-width); }

.cta-panel { position: relative; overflow: hidden; padding: clamp(1.5rem, 5vw, 4rem); border-radius: var(--radius-xl); background: var(--ink); color: #edf5f6; border: 1px solid #294351; box-shadow: var(--shadow-strong); }
.cta-panel::after { content: ""; position: absolute; width: 12rem; height: 12rem; right: -4rem; bottom: -5rem; border: 1px solid #385463; border-radius: 3rem; transform: rotate(22deg); }
.cta-panel > * { position: relative; z-index: 1; }
.cta-panel .muted { color: #adc1c8; }
.cta-panel .eyebrow { color: #72d0d4; }
.cta-panel .button--primary { background: var(--accent); color: #0b1f33; box-shadow: none; }
.cta-split { display: grid; gap: 1rem; margin-top: 1rem; }
.cta-path { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem; border: 1px solid #385463; border-radius: var(--radius-md); color: #edf5f6; text-decoration: none; background: #0d2030; }
.cta-path:hover { border-color: #72d0d4; text-decoration: none; }
.cta-path small { display: block; color: #adc1c8; }
.cta-path span:last-child { color: #72d0d4; font-size: 1.4rem; }

.site-footer { border-top: 1px solid var(--border); padding: var(--s7) 0 var(--s5); background: var(--surface); }
.footer-grid { display: grid; gap: var(--s6); }
.footer-nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .5rem 1rem; }
.footer-nav a { color: var(--muted); text-decoration: none; }
.footer-nav a:hover { color: var(--primary-strong); }
.footer-bottom { margin-top: var(--s6); padding-top: var(--s4); border-top: 1px solid var(--border); display: flex; flex-wrap: wrap; gap: .75rem; justify-content: space-between; color: var(--muted); font-size: .84rem; }
.legal h2 { margin-top: 2.5rem; }
.legal h3 { margin-top: 1.5rem; }
.legal p, .legal ul { margin-top: .75rem; }

@media (min-width: 42rem) {
  .grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--3, .grid--5 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .metric-strip { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .before-after { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1.5fr 1fr; }
  .service-row { grid-template-columns: 3rem 1.1fr 1fr auto; align-items: center; gap: 1.2rem; }
  .service-row p { max-width: 30rem; }
  .project-showcase { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .project-card--featured { grid-column: 1 / -1; min-height: 29rem; }
  .project-card--featured .project-card__visual { min-height: 12rem; }
  .principle-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cta-split { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 64rem) {
  .section { padding: var(--s9) 0; }
  .section-head { grid-template-columns: .7fr 1.3fr; align-items: end; }
  .hero-grid { grid-template-columns: 1.12fr .88fr; gap: clamp(3rem, 7vw, 7rem); }
  .system-board__body { grid-template-columns: .9fr 1.1fr; }
  .board-stage:last-child { grid-column: 1 / -1; }
  .diagnostic-grid { grid-template-columns: .9fr 1.1fr; }
  .domain-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .grid--5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .project-showcase { grid-template-columns: 1.15fr .85fr .85fr; }
  .project-card--featured { grid-column: auto; grid-row: span 2; min-height: auto; }
  .project-card--featured .project-card__visual { min-height: 14rem; }
  .principle-strip { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .delivery-grid { grid-template-columns: .92fr 1.08fr; }
  .nav-toggle { display: none; }
  .primary-nav { display: block; position: static; padding: 0; background: none; border: 0; box-shadow: none; }
  .primary-nav ul { display: flex; align-items: center; gap: .15rem; }
  .primary-nav a { position: relative; padding: .55rem .72rem; background: transparent !important; }
  .primary-nav a::after { content: ""; position: absolute; left: .72rem; right: .72rem; bottom: .26rem; height: 2px; background: transparent; }
  .primary-nav a:hover::after, .primary-nav a[aria-current="page"]::after { background: var(--primary); }
  .nav-cta { display: inline-flex; }
}

@media (min-width: 78rem) {
  .container { width: min(calc(100% - 3rem), var(--content)); }
  .container--wide { width: min(calc(100% - 3rem), var(--content-wide)); }
  .hero { padding-top: var(--s9); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

@media print {
  .site-header, .site-footer, .button, .breadcrumbs, .nav-actions, .system-board { display: none !important; }
  body { background: #fff; color: #000; font-size: 11pt; }
  .section, .hero, .project-hero { padding: 1rem 0; }
  .card, .timeline-item, .arch-box, .project-card, .domain-card { box-shadow: none; break-inside: avoid; }
  a { color: #000; text-decoration: none; }
  a[href^="http"]::after { content: " (" attr(href) ")"; font-size: .85em; }
}

/* Case studies · V1.2 */
.case-hero { padding-top: clamp(3rem, 6vw, 5.5rem); }
.case-hero__grid { display: grid; gap: var(--s7); align-items: center; }
.case-hero__copy h1 { max-width: 16ch; }
.tag--accent { background: var(--accent-soft); border-color: color-mix(in srgb, var(--accent) 60%, var(--border)); color: var(--text); }

.case-screen {
  overflow: hidden;
  min-height: 23rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-xl);
  background: var(--surface);
  box-shadow: var(--shadow-strong);
  transform: rotate(.7deg);
}
.case-screen__bar, .case-screen__footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .7rem;
  padding: .8rem 1rem;
  font-family: var(--font-mono);
  font-size: .69rem;
  letter-spacing: .04em;
}
.case-screen__bar { border-bottom: 1px solid var(--border); background: var(--surface-2); color: var(--muted-strong); }
.case-screen__footer { border-top: 1px solid var(--border); color: var(--muted); background: var(--surface-2); }
.case-screen__status { display: inline-flex; align-items: center; gap: .4rem; }
.case-screen__status::before { content: ""; width: .48rem; height: .48rem; border-radius: 50%; background: var(--success); }
.case-screen--photo { margin: 0; }
.case-screen__image { display: block; width: 100%; height: clamp(17rem, 32vw, 23rem); object-fit: cover; }

.case-facts { display: grid; gap: 1px; padding-block: .1rem; background: var(--border); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; }
.case-fact { min-height: 6.5rem; padding: 1.1rem; background: var(--surface); }
.case-fact span { display: block; margin-bottom: .42rem; font-family: var(--font-mono); font-size: .7rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.case-fact strong { display: block; line-height: 1.28; }

.case-jump { display: flex; gap: .45rem; overflow-x: auto; padding-block: 1rem; scrollbar-width: thin; }
.case-jump a { flex: 0 0 auto; padding: .5rem .76rem; border: 1px solid var(--border); border-radius: 999px; background: var(--surface); color: var(--muted-strong); text-decoration: none; font-size: .84rem; font-weight: 720; }
.case-jump a:hover { border-color: var(--primary); color: var(--primary-strong); }

.before-after--case { gap: var(--s5); }
.case-panel { position: relative; overflow: hidden; padding: clamp(1.35rem, 4vw, 2.5rem) !important; }
.case-panel h2 { margin-top: 1rem; font-size: clamp(1.75rem, 4vw, 3rem); }
.case-panel > p.muted { margin-top: 1rem; }
.case-panel::after { content: ""; position: absolute; width: 8rem; height: 8rem; right: -4rem; bottom: -4rem; border: 1px solid var(--border); border-radius: 2rem; transform: rotate(18deg); }
.case-panel--problem { border-top: 5px solid var(--border-strong) !important; }
.case-panel--solution { border-top: 5px solid var(--primary) !important; }
.check-list--plain li::marker { color: var(--muted); }

.capability-grid { display: grid; gap: 1px; overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius-xl); background: var(--border); }
.capability-card { position: relative; min-height: 15rem; padding: var(--s5); background: var(--surface); }
.capability-card__number { display: inline-flex; font-family: var(--font-mono); color: var(--primary-strong); font-size: .76rem; font-weight: 850; }
.capability-card h3 { margin-top: 2.5rem; }
.capability-card p { margin-top: .72rem; color: var(--muted); }
.capability-card::after { content: ""; position: absolute; left: var(--s5); right: var(--s5); top: 3.45rem; height: 1px; background: var(--border); }

.workflow-layout, .architecture-layout, .decision-layout, .transfer-grid { display: grid; gap: var(--s7); align-items: start; }
.workflow-list { list-style: none; padding: 0; margin: 0; counter-reset: none; border-top: 1px solid var(--border); }
.workflow-step { display: grid; grid-template-columns: 2.8rem 1fr; gap: 1rem; padding: 1.15rem 0; border-bottom: 1px solid var(--border); }
.workflow-step > span { font-family: var(--font-mono); color: var(--primary-strong); font-size: .75rem; font-weight: 850; padding-top: .18rem; }
.workflow-step strong { display: block; }
.workflow-step p { margin-top: .25rem; color: var(--muted); font-size: .95rem; }

.architecture-flow { display: grid; gap: .7rem; }
.architecture-node { position: relative; display: grid; grid-template-columns: 2.6rem 1fr; gap: .85rem; padding: 1rem; border: 1px solid #385463; border-radius: var(--radius-md); background: #0d2030; color: #edf5f6; }
.architecture-node > span { width: 2rem; height: 2rem; display: grid; place-items: center; border: 1px solid #385463; border-radius: .55rem; font-family: var(--font-mono); font-size: .7rem; color: #72d0d4; }
.architecture-node p { margin-top: .28rem; color: #adc1c8; font-size: .92rem; }
.architecture-node:not(:last-child)::after { content: "↓"; position: absolute; left: 1.55rem; bottom: -.77rem; z-index: 2; display: grid; place-items: center; width: 1.4rem; height: 1.4rem; border-radius: 50%; background: var(--ink); color: #72d0d4; font-size: .78rem; }
.architecture-node--core { border-color: #72d0d4; }
.scope-note { margin-top: 1.25rem; padding: 1rem; border: 1px solid #385463; border-radius: var(--radius-md); background: #0d2030; color: #adc1c8; font-size: .9rem; }
.scope-note strong { color: #edf5f6; }

.decision-list { border-top: 1px solid var(--border); }
.decision-item { display: grid; gap: .5rem; padding: 1.2rem 0; border-bottom: 1px solid var(--border); }
.decision-item h3 { font-size: 1.1rem; letter-spacing: -.02em; }
.decision-item p { color: var(--muted); }

.visibility-panel { display: grid; gap: var(--s5); padding: clamp(1.4rem, 4vw, 2.5rem); border: 1px solid var(--border); border-radius: var(--radius-xl); background: var(--bg); }
.visibility-panel h2 { margin-top: .9rem; font-size: clamp(1.7rem, 4vw, 3rem); }
.visibility-panel > p { align-self: end; color: var(--muted); font-size: 1.02rem; }

.related-projects { overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius-xl); background: var(--surface); box-shadow: var(--shadow-sm); }
.related-projects > p { padding: 1rem 1.15rem; border-bottom: 1px solid var(--border); }
.related-link { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.15rem; color: var(--text); text-decoration: none; border-bottom: 1px solid var(--border); }
.related-link:last-child { border-bottom: 0; }
.related-link:hover { background: var(--surface-2); text-decoration: none; }
.related-link small { display: block; color: var(--muted); font-family: var(--font-mono); font-size: .68rem; text-transform: uppercase; letter-spacing: .08em; }
.related-link strong { display: block; margin-top: .25rem; }
.related-link > span:last-child { color: var(--primary-strong); font-size: 1.4rem; }

/* Datenfabel visual */
.data-map { min-height: 18.2rem; display: grid; grid-template-columns: 1fr; gap: .8rem; align-content: center; padding: 1.2rem; background: var(--bg); }
.data-map__sources, .data-map__outputs { display: grid; grid-template-columns: repeat(3, 1fr); gap: .45rem; }
.data-map__sources span, .data-map__outputs span { padding: .7rem .35rem; border: 1px solid var(--border); border-radius: .65rem; background: var(--surface); text-align: center; font-family: var(--font-mono); font-size: .68rem; }
.data-map__core { padding: 1.1rem; border: 1px solid var(--primary); border-radius: var(--radius-md); background: var(--primary-soft); text-align: center; }
.data-map__core small { display: block; color: var(--primary-strong); font-family: var(--font-mono); font-size: .67rem; letter-spacing: .08em; }
.data-map__core strong { display: block; margin-top: .35rem; }
.data-map__connector { display: none; color: var(--primary-strong); text-align: center; font-size: 1.4rem; }

/* DogDos visual */
.dogdos-board { display: grid; gap: .8rem; min-height: 18.2rem; padding: 1rem; background: var(--bg); }
.dogdos-board__schedule { padding: .9rem; border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--surface); }
.dogdos-board__schedule small { color: var(--muted); font-family: var(--font-mono); }
.dogdos-board__schedule > div { display: grid; grid-template-columns: 3.3rem 1fr; gap: .6rem; padding: .62rem 0; border-bottom: 1px solid var(--border); font-size: .82rem; }
.dogdos-board__schedule > div:last-child { border: 0; }
.dogdos-board__schedule span { color: var(--muted); }
.dogdos-board__map { position: relative; min-height: 8rem; overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--surface); }
.dogdos-board__map::before, .dogdos-board__map::after { content: ""; position: absolute; border: 2px solid var(--primary); border-radius: 50%; }
.dogdos-board__map::before { width: 6rem; height: 6rem; left: 22%; top: 12%; opacity: .55; }
.dogdos-board__map::after { width: 2.2rem; height: 2.2rem; right: 18%; bottom: 18%; border-color: var(--accent); }
.dogdos-board__map i { position: absolute; width: .7rem; height: .7rem; border-radius: 50% 50% 50% 0; background: var(--primary); transform: rotate(-45deg); }
.dogdos-board__map i:nth-child(1) { left: 30%; top: 34%; }.dogdos-board__map i:nth-child(2) { left: 52%; top: 55%; }.dogdos-board__map i:nth-child(3) { right: 24%; top: 27%; }
.dogdos-board__map span { position: absolute; left: .7rem; bottom: .55rem; padding: .25rem .45rem; border-radius: .45rem; background: var(--surface); font-size: .7rem; color: var(--muted); }
.dogdos-board__status { display: grid; grid-template-columns: repeat(3, 1fr); gap: .45rem; }
.dogdos-board__status span { padding: .65rem .45rem; border: 1px solid var(--border); border-radius: .6rem; background: var(--surface); text-align: center; font-size: .7rem; color: var(--muted); }

/* DINGO visual */
.dingo-board { display: grid; grid-template-columns: 5.7rem 1fr; min-height: 18.2rem; background: var(--bg); }
.dingo-board__nav { display: flex; flex-direction: column; gap: .35rem; padding: .8rem .55rem; border-right: 1px solid var(--border); background: var(--surface-2); }
.dingo-board__nav span { padding: .48rem; border-radius: .5rem; color: var(--muted); font-size: .68rem; }
.dingo-board__nav .active { background: var(--surface); color: var(--primary-strong); font-weight: 800; }
.dingo-board__content { display: grid; grid-template-columns: repeat(2, 1fr); gap: .65rem; padding: .85rem; align-content: start; }
.dingo-kpi { min-height: 7rem; padding: .8rem; border: 1px solid var(--border); border-radius: .75rem; background: var(--surface); }
.dingo-kpi small { display: block; color: var(--muted); font-family: var(--font-mono); font-size: .58rem; }
.dingo-kpi strong { display: block; margin-top: .3rem; font-size: 1.8rem; color: var(--primary-strong); }
.dingo-kpi span { color: var(--muted); font-size: .65rem; }
.dingo-review { grid-column: 1 / -1; display: grid; gap: .4rem; padding: .8rem; border: 1px solid var(--border); border-radius: .75rem; background: var(--surface); font-size: .7rem; }
.dingo-review span { padding-bottom: .35rem; border-bottom: 1px solid var(--border); color: var(--muted); }
.dingo-review strong { color: #8a6500; }

/* Accounting visual */
.accounting-board { min-height: 18.2rem; display: grid; gap: .65rem; align-items: center; padding: 1rem; background: var(--bg); }
.accounting-doc, .accounting-suggestion { padding: .85rem; border: 1px solid var(--border); border-radius: .75rem; background: var(--surface); }
.accounting-doc small, .accounting-suggestion small { color: var(--muted); font-family: var(--font-mono); font-size: .62rem; }
.accounting-doc span { display: block; width: 78%; height: .4rem; margin-top: .55rem; border-radius: 999px; background: var(--surface-2); }
.accounting-doc span:nth-of-type(2) { width: 58%; }.accounting-doc span:nth-of-type(3) { width: 68%; }
.accounting-doc strong { display: block; margin-top: .9rem; font-size: 1.3rem; }
.accounting-arrow { display: none; text-align: center; color: var(--primary-strong); font-size: 1.5rem; }
.accounting-suggestion p { display: flex; justify-content: space-between; gap: 1rem; padding: .42rem 0; border-bottom: 1px solid var(--border); font-size: .72rem; }
.accounting-suggestion p:last-child { border: 0; }.accounting-suggestion p span { color: var(--muted); }
.accounting-review { display: flex; gap: .5rem; }
.accounting-review button { flex: 1; min-height: 2.4rem; border: 1px solid var(--border); border-radius: .6rem; background: var(--surface); color: var(--muted); font-size: .72rem; cursor: default; }
.accounting-review button:last-child { background: var(--primary); border-color: var(--primary); color: var(--primary-contrast); }

@media (min-width: 42rem) {
  .case-facts { grid-template-columns: repeat(2, 1fr); }
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .visibility-panel { grid-template-columns: 1fr 1fr; }
  .data-map { grid-template-columns: .85fr auto 1.4fr auto .85fr; align-items: center; }
  .data-map__sources, .data-map__outputs { grid-template-columns: 1fr; }
  .data-map__connector { display: block; }
  .dogdos-board { grid-template-columns: 1fr 1fr; }
  .dogdos-board__status { grid-column: 1 / -1; }
  .accounting-board { grid-template-columns: .8fr auto 1.2fr; }
  .accounting-arrow { display: block; }
  .accounting-review { grid-column: 2 / 4; }
}

@media (min-width: 64rem) {
  .case-hero__grid { grid-template-columns: 1.02fr .98fr; gap: clamp(3rem, 6vw, 6rem); }
  .case-screen { min-height: 27rem; }
  .case-facts { grid-template-columns: repeat(4, 1fr); }
  .capability-grid { grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr)); }
  .workflow-layout, .architecture-layout, .decision-layout, .transfer-grid { grid-template-columns: .86fr 1.14fr; }
  .decision-item { grid-template-columns: .75fr 1.25fr; gap: 1.5rem; }
  .project-hero.case-hero::after { right: 2%; bottom: -3rem; }
}


/* Offer architecture */
.offer-mini-grid { display: grid; grid-template-columns: 1fr; gap: .8rem; }
.offer-mini { position: relative; display: grid; gap: .75rem; min-height: 13rem; padding: 1.25rem; border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--surface); color: var(--text); text-decoration: none; transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease; }
.offer-mini:hover { transform: translateY(-2px); border-color: var(--primary); box-shadow: var(--shadow-sm); text-decoration: none; }
.offer-mini > span { font-family: var(--font-mono); color: var(--primary-strong); font-size: .68rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.offer-mini h3 { max-width: 12ch; }
.offer-mini p { color: var(--muted); font-size: .93rem; }
.offer-mini i { position: absolute; right: 1.2rem; bottom: 1rem; color: var(--primary-strong); font-size: 1.25rem; font-style: normal; }

.offer-overview-hero h1 { max-width: 15ch; }
.offer-principles { display: grid; grid-template-columns: 1fr; gap: 1px; overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--border); }
.offer-principles article { padding: 1.4rem; background: var(--surface); }
.offer-principles article > span { font-family: var(--font-mono); color: var(--primary-strong); font-size: .72rem; font-weight: 900; }
.offer-principles h3 { margin-top: .65rem; }
.offer-principles p { margin-top: .55rem; color: var(--muted); }
.offer-grid { display: grid; grid-template-columns: 1fr; gap: 1rem; }
.offer-card { display: grid; align-content: start; gap: 1rem; min-height: 27rem; padding: 1.4rem; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--surface); box-shadow: var(--shadow-sm); }
.offer-card__head { display: flex; justify-content: space-between; gap: 1rem; align-items: center; }
.offer-card__code { display: grid; place-items: center; width: 2.5rem; height: 2.5rem; border-radius: .75rem; background: var(--primary-soft); color: var(--primary-strong); font-family: var(--font-mono); font-weight: 900; }
.offer-card__type { color: var(--muted); font-family: var(--font-mono); font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; }
.offer-card h2 { font-size: clamp(1.7rem,4vw,2.35rem); }
.offer-card .lead { font-size: 1.02rem; }
.offer-card__list { display: grid; gap: .65rem; margin: 0; padding: 0; list-style: none; }
.offer-card__list li { position: relative; padding-left: 1.35rem; color: var(--muted); font-size: .9rem; }
.offer-card__list li::before { content: "✓"; position: absolute; left: 0; color: var(--success); font-weight: 900; }
.offer-card__footer { display: flex; justify-content: space-between; gap: 1rem; align-items: center; margin-top: auto; padding-top: 1rem; border-top: 1px solid var(--border); }
.offer-card__footer > span { color: var(--muted); font-size: .75rem; }
.offer-selector-layout { display: grid; gap: 2.5rem; }
.offer-selector { display: grid; gap: .65rem; }
.offer-selector a { display: grid; grid-template-columns: 1fr auto; gap: .35rem 1rem; padding: 1.1rem; border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--surface); color: var(--text); text-decoration: none; }
.offer-selector a:hover { border-color: var(--primary); text-decoration: none; }
.offer-selector span { grid-column: 1 / -1; color: var(--muted); font-size: .85rem; }
.offer-selector strong { font-size: 1.04rem; }
.offer-selector i { color: var(--primary-strong); font-style: normal; }

.offer-hero-grid { display: grid; gap: 2.5rem; align-items: center; }
.offer-detail-hero h1 { max-width: 14ch; }
.offer-summary { position: relative; overflow: hidden; padding: 1.5rem; border: 1px solid var(--border-strong); border-radius: var(--radius-xl); background: var(--surface); box-shadow: var(--shadow); }
.offer-summary__code { position: absolute; right: -.35rem; top: -.85rem; color: var(--surface-2); font-family: var(--font-mono); font-size: 7rem; line-height: 1; font-weight: 900; pointer-events: none; }
.offer-summary > *:not(.offer-summary__code) { position: relative; }
.offer-summary h2 { margin-top: .75rem; font-size: clamp(2rem,5vw,3.4rem); }
.offer-summary > p:not(.eyebrow) { margin-top: 1rem; color: var(--muted); }
.offer-summary__status { display: grid; gap: .55rem; margin-top: 1.4rem; }
.offer-summary__status span { display: flex; align-items: center; gap: .55rem; padding: .65rem .75rem; border: 1px solid var(--border); border-radius: .65rem; background: var(--bg); font-size: .82rem; font-weight: 700; }
.offer-summary__status span::before { content: "✓"; color: var(--success); }
.offer-facts { display: grid; grid-template-columns: repeat(2,1fr); gap: 1px; overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--border); }
.offer-fact { padding: 1rem; background: var(--surface); }
.offer-fact span { display: block; color: var(--muted); font-family: var(--font-mono); font-size: .67rem; text-transform: uppercase; letter-spacing: .08em; }
.offer-fact strong { display: block; margin-top: .4rem; }
.fit-grid { display: grid; gap: 1rem; }
.fit-panel { padding: 1.4rem; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--surface); }
.fit-panel--yes { border-color: color-mix(in srgb, var(--success) 55%, var(--border)); }
.fit-panel h2 { margin-top: .8rem; font-size: clamp(1.65rem,4vw,2.5rem); }
.check-list, .plain-list, .after-list { display: grid; gap: .75rem; margin: 1.25rem 0 0; padding: 0; list-style: none; }
.check-list li, .plain-list li { position: relative; padding-left: 1.5rem; color: var(--muted); }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--success); font-weight: 900; }
.plain-list li::before { content: "–"; position: absolute; left: .15rem; color: var(--muted); font-weight: 900; }
.deliverables-grid { display: grid; grid-template-columns: 1fr; gap: 1px; overflow: hidden; border: 1px solid #294351; border-radius: var(--radius-lg); background: #294351; }
.deliverable { display: grid; grid-template-columns: 2.3rem 1fr; gap: .8rem; padding: 1.1rem; background: #0d2030; }
.deliverable span { color: #70d0d4; font-family: var(--font-mono); font-weight: 900; }
.deliverable p { color: #dce9ed; }
.after-grid { display: grid; gap: 2rem; }
.after-list { margin-top: 0; }
.after-list li { display: flex; gap: .75rem; align-items: flex-start; padding: .85rem 1rem; border: 1px solid var(--border); border-radius: .75rem; background: var(--surface); }
.after-list li::before { content: "→"; color: var(--primary-strong); font-weight: 900; }
.field-hint { color: var(--muted); font-size: .78rem; }

@media (min-width: 42rem) {
  .offer-mini-grid, .offer-grid { grid-template-columns: repeat(2,1fr); }
  .offer-principles { grid-template-columns: repeat(3,1fr); }
  .offer-facts { grid-template-columns: repeat(4,1fr); }
  .fit-grid, .after-grid { grid-template-columns: repeat(2,1fr); }
  .deliverables-grid { grid-template-columns: repeat(2,1fr); }
}
@media (min-width: 64rem) {
  .offer-mini-grid { grid-template-columns: repeat(auto-fit, minmax(13.5rem, 1fr)); }
  .offer-selector-layout, .offer-hero-grid { grid-template-columns: .88fr 1.12fr; gap: clamp(3rem,6vw,6rem); }
  .offer-grid { grid-template-columns: repeat(2,1fr); }
  .offer-card { padding: 1.65rem; }
  .deliverables-grid { grid-template-columns: repeat(3,1fr); }
}


/* V1.4 pricing and sales architecture */
.offer-mini__price { align-self: end; width: fit-content; padding: .35rem .55rem; border-radius: 999px; background: var(--primary-soft); color: var(--primary-strong); font-family: var(--font-mono); font-size: .7rem; }
.offer-card__price { display: grid; gap: .12rem; width: fit-content; padding: .8rem 1rem; border: 1px solid var(--border); border-radius: .85rem; background: var(--bg); }
.offer-card__price span, .offer-summary__price span, .package-price-panel__value span { color: var(--muted); font-family: var(--font-mono); font-size: .66rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.offer-card__price strong { font-size: 1.65rem; line-height: 1.1; }
.offer-card__price small, .offer-summary__price small, .package-price-panel__value small { color: var(--muted); font-size: .68rem; }
.offer-summary__price { display: grid; gap: .16rem; margin-top: 1.3rem; padding: 1rem; border: 1px solid var(--border); border-radius: .8rem; background: var(--bg); }
.offer-summary__price strong { font-size: clamp(1.8rem,5vw,2.55rem); line-height: 1; }
.price-logic-section { border-top: 1px solid var(--border); }
.commercial-grid { display: grid; grid-template-columns: 1fr; gap: 1px; overflow: hidden; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--border); }
.commercial-card { padding: 1.25rem; background: var(--surface); }
.commercial-card > span { font-family: var(--font-mono); color: var(--primary-strong); font-size: .7rem; font-weight: 900; }
.commercial-card h3 { margin-top: .65rem; }
.commercial-card p { margin-top: .55rem; color: var(--muted); font-size: .9rem; }
.price-band { display: grid; grid-template-columns: 1fr; gap: 1px; margin-top: 1rem; overflow: hidden; border: 1px solid var(--border-strong); border-radius: var(--radius-lg); background: var(--border-strong); }
.price-band > div { display: grid; gap: .3rem; padding: 1.2rem; background: var(--ink); color: #eaf1f3; }
.price-band span { color: #9ab2bd; font-family: var(--font-mono); font-size: .67rem; letter-spacing: .08em; text-transform: uppercase; }
.price-band strong { font-size: clamp(1.45rem,4vw,2rem); }
.price-band small { color: #b9cbd2; }
.package-commercial { display: grid; gap: 1rem; }
.package-price-panel, .package-scope-panel { padding: 1.4rem; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--surface); }
.package-price-panel { display: grid; align-content: start; gap: 1rem; border-color: var(--border-strong); }
.package-price-panel__value { display: grid; gap: .2rem; padding: 1.05rem; border-radius: .9rem; background: var(--ink); color: #eaf1f3; }
.package-price-panel__value span, .package-price-panel__value small { color: #b9cbd2; }
.package-price-panel__value strong { font-size: clamp(2.2rem,7vw,4rem); line-height: 1; }
.package-price-panel > p:not(.eyebrow) { color: var(--muted); }
.payment-note { display: grid; gap: .3rem; padding-top: 1rem; border-top: 1px solid var(--border); }
.payment-note span { color: var(--muted); font-family: var(--font-mono); font-size: .67rem; text-transform: uppercase; letter-spacing: .08em; }
.payment-note strong { font-size: .92rem; }
.package-scope-panel { display: grid; gap: 1.7rem; }
.package-scope-panel .check-list, .package-scope-panel .plain-list { margin-top: .8rem; }
.contact-next { padding: 1.2rem; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--surface); }
.contact-next ol { display: grid; gap: .9rem; margin: 1rem 0 0; padding: 0; list-style: none; counter-reset: contact-step; }
.contact-next li { display: grid; grid-template-columns: 2rem 1fr; gap: .15rem .7rem; counter-increment: contact-step; }
.contact-next li::before { content: counter(contact-step); grid-row: 1 / 3; display: grid; place-items: center; width: 2rem; height: 2rem; border-radius: .6rem; background: var(--primary-soft); color: var(--primary-strong); font-family: var(--font-mono); font-weight: 900; }
.contact-next li span { color: var(--muted); font-size: .82rem; }
@media (min-width: 42rem) {
  .commercial-grid { grid-template-columns: repeat(2,1fr); }
  .price-band { grid-template-columns: repeat(3,1fr); }
}
@media (min-width: 64rem) {
  .commercial-grid { grid-template-columns: repeat(4,1fr); }
  .package-commercial { grid-template-columns: .82fr 1.18fr; }
  .package-scope-panel { grid-template-columns: repeat(2,1fr); }
}

/* V1.9 local SEO and knowledge layout refinements */
@media (min-width: 42rem) {
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 64rem) and (max-width: 71.99rem) {
  .primary-nav a { padding-inline: .45rem; font-size: .88rem; }
  .primary-nav a::after { left: .45rem; right: .45rem; }
  .nav-cta { display: none; }
}

/* V2 content system ------------------------------------------------------- */
.article-layout {
  display: grid;
  grid-template-columns: minmax(15rem, 0.7fr) minmax(0, 1.8fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}
.article-toc {
  position: sticky;
  top: calc(var(--header-height, 5rem) + 1.5rem);
  padding: 1.4rem;
}
.article-toc ol {
  margin: 0;
  padding-left: 1.2rem;
  display: grid;
  gap: .7rem;
}
.article-toc a {
  color: var(--color-text-muted);
  text-decoration: none;
}
.article-toc a:hover,
.article-toc a:focus-visible { color: var(--color-primary); }
.article-summary { max-width: 48rem; }
.article-reading {
  max-width: 52rem;
  margin-inline: auto;
}
.article-reading > p:not(.eyebrow),
.article-summary > p:not(.eyebrow) {
  max-width: 47rem;
}
.article-section { scroll-margin-top: 7rem; }
.hub-card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}
.hub-card {
  display: flex;
  flex-direction: column;
  min-height: 17rem;
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-surface);
  color: inherit;
  text-decoration: none;
  transition: transform .18s ease, border-color .18s ease, background-color .18s ease;
}
.hub-card:hover,
.hub-card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--color-primary);
}
.hub-card > span {
  color: var(--color-primary);
  font-size: var(--font-size-xs);
  font-weight: 750;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.hub-card h3 { margin: 1rem 0 .65rem; }
.hub-card p { color: var(--color-text-muted); }
.hub-card i {
  margin-top: auto;
  padding-top: 1.25rem;
  color: var(--color-primary);
  font-style: normal;
  font-weight: 700;
}
.hub-card__topics { margin-top: .75rem; }
.comparison-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1rem;
}
.comparison-card { height: 100%; }
.faq-list {
  display: grid;
  gap: .75rem;
  margin-top: 1.5rem;
}
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface);
}
.faq-item summary {
  cursor: pointer;
  padding: 1rem 1.15rem;
  font-weight: 700;
}
.faq-item > div { padding: 0 1.15rem 1.1rem; }
.faq-item p { margin: 0; color: var(--color-text-muted); }

@media (max-width: 760px) {
  .article-layout,
  .hub-card-grid { grid-template-columns: 1fr; }
  .article-toc { position: static; }
  .hub-card { min-height: 0; }
}