/*
 * Kitchen and bath remodeling: the plan view.
 * Every class is prefixed kb-. Drafting-paper cream and the ink of a plotted
 * drawing, the blue of a blueprint line, the oak of a cabinet door for the one
 * accent, coral and green for a sale that is broken or whole, and the dark of
 * a showroom at night for the one chapter about what the phone never does.
 */
.kb-page {
  --kb-paper: #f7f3ea;
  --kb-plate: #fdfaf3;
  --kb-sheet: #ffffff;
  --kb-ink: #1d2733;
  --kb-soft: #3a4656;
  --kb-muted: #566170;
  --kb-rule: #d9d1c0;
  --kb-blue: #2a4a73;
  --kb-blue-wash: #dde7f3;
  --kb-oak: #8a5a1f;
  --kb-oak-wash: #f1e3cb;
  --kb-coral: #b3261e;
  --kb-coral-deep: #8f1c16;
  --kb-coral-wash: #fbe0dc;
  --kb-green: #1f7a4d;
  --kb-green-deep: #165a39;
  --kb-green-wash: #dcefe3;
  --kb-night: #18212c;
  --kb-night-2: #222d3a;
  --kb-on-night: #eceff3;
  --kb-on-night-soft: #b7c0cc;
  --kb-glow: #f2cf8a;
  --kb-mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, "Courier New", monospace;
  --kb-hand: "Bradley Hand", "Segoe Print", "Marker Felt", "Comic Sans MS", cursive;
  background: var(--kb-paper);
  color: var(--kb-ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  overflow-x: clip;
}
.kb-page *, .kb-page *::before, .kb-page *::after { box-sizing: border-box; }
.kb-page ::selection { background: var(--kb-glow); color: var(--kb-ink); }
.kb-page a:focus-visible,
.kb-page summary:focus-visible,
.kb-page [tabindex]:focus-visible {
  outline: 2px solid var(--kb-blue);
  outline-offset: 4px;
}
.kb-close a:focus-visible { outline-color: var(--kb-glow); }
.kb-page section[id] { scroll-margin-top: 130px; }
.kb-wrap { width: min(100% - 80px, 1280px); margin-inline: auto; }

.kb-page h1, .kb-page h2 {
  font-family: var(--font-serif);
  font-weight: 500;
  letter-spacing: -0.025em;
  text-wrap: balance;
}
.kb-page h2 { font-size: clamp(2.05rem, 3.3vw, 3.4rem); line-height: 1.08; }
.kb-page h1 em, .kb-page h2 em { font-style: italic; }
.kb-page h3 { font-size: 1.06rem; font-weight: 700; line-height: 1.3; }
.kb-section { padding: clamp(64px, 8vw, 108px) 0; }
.kb-section p { max-width: 68ch; }
.kb-section h2 + p { margin-top: 18px; }
.kb-page p a {
  color: inherit;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
.kb-page p a:hover { color: var(--kb-blue); }
.kb-source { margin-top: 14px; font-size: 13px; color: var(--kb-muted); }
.kb-invented { margin-top: 10px; font-size: 12.5px; color: var(--kb-muted); }
.kb-table-scroll { overflow-x: auto; margin-top: 28px; }

/* Buttons */
.kb-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 26px; margin-top: 24px; }
.kb-button {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 54px;
  padding: 0 26px;
  border-radius: 999px;
  background: var(--kb-ink);
  color: #fff;
  font-weight: 700;
  font-size: 15.5px;
  text-decoration: none;
  box-shadow: 0 10px 22px -12px rgba(29, 39, 51, 0.8);
  transition: background-color 160ms ease-out, transform 160ms ease-out;
}
.kb-button:hover { background: var(--kb-blue); transform: translateY(-1px); }
.kb-quiet-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 44px;
  color: inherit;
  font-weight: 600;
  font-size: 15px;
  text-decoration: underline;
  text-decoration-color: rgba(29, 39, 51, 0.4);
  text-underline-offset: 5px;
}
.kb-quiet-link:hover { text-decoration-color: currentColor; }
.kb-close .kb-button { background: var(--kb-glow); color: var(--kb-ink); box-shadow: 0 10px 22px -12px rgba(0, 0, 0, 0.7); }
.kb-close .kb-button:hover { background: #f8dfab; }
.kb-close .kb-quiet-link { text-decoration-color: rgba(236, 239, 243, 0.45); }

/* Hero */
.kb-hero-shell {
  padding-top: 101px;
  background-color: var(--kb-paper);
  background-image: radial-gradient(ellipse 55% 70% at 80% 40%, #fffdf8 0, rgba(255, 253, 248, 0) 70%);
  border-bottom: 4px solid var(--kb-ink);
}
.kb-breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; padding-top: 12px; font-size: 12.5px; color: var(--kb-muted); }
.kb-breadcrumb a { color: inherit; text-decoration: none; display: inline-flex; align-items: center; min-height: 44px; }
.kb-breadcrumb a:hover { color: var(--kb-ink); text-decoration: underline; }
.kb-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.84fr) minmax(0, 1.16fr);
  gap: clamp(32px, 4vw, 60px);
  align-items: start;
  padding: clamp(28px, 4vw, 52px) 0 clamp(56px, 6vw, 84px);
}
.kb-hero-copy { padding: 6px 0; }
.kb-hero h1 { font-size: clamp(2.5rem, 4.3vw, 4.1rem); line-height: 1.03; color: var(--kb-ink); }
.kb-hero h1 .h1-kicker {
  display: block;
  margin-bottom: 20px;
  font-family: var(--font-sans);
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: 0.14em;
  line-height: 1.4;
  text-transform: uppercase;
  color: var(--kb-oak);
}
.kb-h1-line { display: block; }
.kb-hero h1 em { color: var(--kb-blue); }
.kb-lede { margin-top: 20px; max-width: 56ch; font-size: clamp(1rem, 1.15vw, 1.1rem); line-height: 1.6; color: var(--kb-soft); }
.kb-price { display: grid; gap: 4px; margin-top: 20px; font-size: 15.5px; }
.kb-price span strong { display: inline-block; margin-right: 6px; font-weight: 800; color: var(--kb-ink); }
.kb-price small { margin-top: 4px; font-size: 13px; color: var(--kb-muted); }
.kb-hero .ns-stars { color: #8a5a10; }

/* The plan */
.kb-plan {
  margin: 0;
  padding: 14px 18px 18px;
  border-radius: 10px;
  background: var(--kb-plate);
  border: 2px solid var(--kb-ink);
  box-shadow: 10px 10px 0 -2px #e3dccb;
}
.kb-state { position: absolute; opacity: 0; width: 1px; height: 1px; margin: 0; }
.kb-plan-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px 18px; padding-bottom: 10px; }
.kb-plan-title { max-width: none !important; margin: 0; font-family: var(--font-serif); font-size: 1.35rem; line-height: 1.15; letter-spacing: -0.01em; }
.kb-tabs { display: inline-flex; padding: 4px; border-radius: 999px; background: var(--kb-paper); border: 1px solid var(--kb-rule); }
.kb-tabs label {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--kb-soft);
  cursor: pointer;
  transition: background-color 160ms ease-out, color 160ms ease-out;
}
.kb-tabs label:hover { background: #ece6d6; }
.kb-state-out:checked ~ .kb-plan-head label[for="kb-state-out"] { background: var(--kb-coral-wash); color: #7d2418; }
.kb-state-in:checked ~ .kb-plan-head label[for="kb-state-in"] { background: var(--kb-green-wash); color: var(--kb-green-deep); }
.kb-state:focus-visible ~ .kb-plan-head .kb-tabs { outline: 2px solid var(--kb-blue); outline-offset: 3px; }

.kb-svg { display: block; width: 100%; height: auto; overflow: visible; }
.kb-wall { fill: none; stroke: var(--kb-ink); stroke-width: 10; stroke-linejoin: miter; }
.kb-opening { fill: var(--kb-plate); }
.kb-glass { stroke: var(--kb-blue); stroke-width: 1.6; }
.kb-door { fill: none; stroke: var(--kb-blue); stroke-width: 1.6; stroke-dasharray: 5 4; }
.kb-counter { fill: #efe7d4; stroke: var(--kb-blue); stroke-width: 1.6; }
.kb-fridge { fill: var(--kb-blue-wash); stroke: var(--kb-blue); stroke-width: 1.6; }
.kb-fixture { fill: #fff; stroke: var(--kb-blue); stroke-width: 1.6; }
.kb-basin { fill: var(--kb-blue-wash); stroke: var(--kb-blue); stroke-width: 1.4; }
.kb-dash-box { fill: none; stroke: var(--kb-blue); stroke-width: 1.4; stroke-dasharray: 4 3; }
.kb-burner { fill: none; stroke: var(--kb-blue); stroke-width: 1.6; }
.kb-stool { fill: #fff; stroke: var(--kb-blue); stroke-width: 1.6; }
.kb-label { font-family: var(--kb-mono); font-size: 11px; font-weight: 700; fill: var(--kb-blue); letter-spacing: 0.06em; }
.kb-dim { stroke: var(--kb-muted); stroke-width: 1.2; }
.kb-dim-text { font-family: var(--kb-mono); font-size: 11px; fill: var(--kb-muted); }
.kb-tri { fill: none; stroke-linejoin: round; transition: stroke 400ms ease-out; }
.kb-tri-label { font-family: var(--kb-mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; }
.kb-state-out:checked ~ .kb-svg .kb-tri { stroke: var(--kb-coral); stroke-width: 3.5; stroke-dasharray: 10 9; }
.kb-state-out:checked ~ .kb-svg .kb-tri-label { fill: var(--kb-coral-deep); }
.kb-state-in:checked ~ .kb-svg .kb-tri { stroke: var(--kb-green); stroke-width: 4.5; stroke-dasharray: none; }
.kb-state-in:checked ~ .kb-svg .kb-tri-label { fill: var(--kb-green-deep); }
.kb-marker { stroke-width: 3; transition: fill 400ms ease-out, stroke 400ms ease-out; }
.kb-marker-n { font-family: var(--font-sans); font-size: 15px; font-weight: 800; }
.kb-state-out:checked ~ .kb-svg .kb-marker { fill: #fff; stroke: var(--kb-coral); }
.kb-state-out:checked ~ .kb-svg .kb-marker-n { fill: var(--kb-ink); }
.kb-state-in:checked ~ .kb-svg .kb-marker { fill: var(--kb-green); stroke: var(--kb-green); }
.kb-state-in:checked ~ .kb-svg .kb-marker-n { fill: #fff; }

.kb-legend { list-style: none; margin: 14px 0 0; padding: 0; border-top: 1px solid var(--kb-rule); }
.kb-legend li + li { border-top: 1px solid #e9e2d2; }
.kb-legend-row {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  min-height: 44px;
  padding: 10px 8px;
  color: var(--kb-ink);
  text-decoration: none;
  transition: background-color 140ms ease-out;
}
.kb-legend-row:hover { background: var(--kb-paper); }
.kb-legend-pip {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 3px solid var(--kb-blue);
  background: #fff;
  font-size: 13px;
  font-weight: 800;
}
.kb-legend-text { display: grid; gap: 2px; font-size: 14px; line-height: 1.4; }
.kb-legend-said b { font-weight: 800; }
.kb-legend-said { font-weight: 600; }
.kb-legend-out, .kb-legend-in { color: var(--kb-soft); }
.kb-legend-out { border-left: 3px solid var(--kb-coral); padding-left: 8px; }
.kb-legend-in { border-left: 3px solid var(--kb-green); padding-left: 8px; }
.kb-state-out:checked ~ .kb-legend .kb-legend-in,
.kb-state-in:checked ~ .kb-legend .kb-legend-out { display: none; }
.kb-plan figcaption { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--kb-rule); font-size: 14.5px; font-weight: 600; }
.kb-state-out:checked ~ figcaption .kb-cap-in,
.kb-state-in:checked ~ figcaption .kb-cap-out { display: none; }
.kb-cap-out, .kb-cap-in { display: block; }
.kb-plan .kb-invented { display: block; margin-top: 6px; font-weight: 400; }

/* Jump nav */
.kb-jump {
  position: sticky;
  top: 72px;
  z-index: 5;
  background: rgba(247, 243, 234, 0.96);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--kb-rule);
}
.kb-jump .kb-wrap { display: flex; gap: 6px 22px; overflow-x: auto; padding: 4px 0; scrollbar-width: none; }
.kb-jump a {
  flex: none;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--kb-soft);
  text-decoration: none;
}
.kb-jump a:hover { color: var(--kb-blue); text-decoration: underline; }

/* The long middle */
.kb-middle-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: clamp(32px, 6vw, 88px); align-items: start; }
.kb-middle p { margin-top: 18px; }
.kb-ladder { margin: 0; padding: 22px 24px 16px; border: 2px solid var(--kb-ink); border-radius: 6px; background: var(--kb-sheet); box-shadow: 8px 8px 0 -2px #e3dccb; }
.kb-ladder p { max-width: none !important; }
.kb-ladder-head { margin: 0 0 8px !important; font-family: var(--font-serif); font-size: 1.35rem; line-height: 1.2; }
.kb-ladder ol { list-style: none; margin: 0; padding: 0; }
.kb-ladder li { display: flex; justify-content: space-between; align-items: baseline; gap: 14px; padding: 12px 0; border-bottom: 1px solid var(--kb-rule); font-size: 15.5px; }
.kb-ladder li b { font-family: var(--font-serif); font-size: 1.5rem; font-weight: 500; letter-spacing: -0.02em; color: var(--kb-blue); }

/* Chapters */
.kb-chapter { border-top: 1px solid var(--kb-rule); }
.kb-c1 { background: var(--kb-sheet); }
.kb-c2 { background: var(--kb-paper); }
.kb-chapter-head { max-width: 76ch; }
.kb-chapter-head p { margin-top: 18px; }
.kb-chapter-tag { margin: 0 0 18px !important; }
.kb-zonetag {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 32px;
  padding: 0 14px 0 4px;
  border-radius: 999px;
  background: var(--kb-ink);
  color: #fff;
  font-family: var(--kb-mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.kb-zonetag-n { display: grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; background: #fff; color: var(--kb-ink); font-size: 12px; }
.kb-chapter-tie { margin-top: 32px; padding-top: 18px; border-top: 1px solid var(--kb-rule); font-weight: 500; }

/* 1: the window */
.kb-window-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 64px); align-items: start; margin-top: 40px; }
.kb-project { margin: 0; padding: 0 0 18px; border: 2px solid var(--kb-ink); border-radius: 6px; background: var(--kb-plate); box-shadow: 0 20px 30px -22px rgba(29, 39, 51, 0.5); }
.kb-project p { max-width: none !important; margin: 0; }
.kb-project-head { padding: 12px 20px; background: var(--kb-ink); color: #fff; font-family: var(--kb-mono); font-size: 12px; font-weight: 800; letter-spacing: 0.1em; text-transform: uppercase; }
.kb-project dl { margin: 0; padding: 4px 20px 0; }
.kb-project dl > div { display: grid; grid-template-columns: 130px minmax(0, 1fr); gap: 4px 14px; padding: 12px 0; border-bottom: 1px solid var(--kb-rule); }
.kb-project dt { font-family: var(--kb-mono); font-size: 11.5px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--kb-muted); padding-top: 3px; }
.kb-project dd { margin: 0; font-size: 15.5px; line-height: 1.45; }
.kb-project-cta { margin: 16px 20px 0 !important; padding: 12px 14px !important; border-radius: 4px; background: var(--kb-oak-wash); font-weight: 700; }
.kb-project .kb-invented { padding: 0 20px; }
.kb-window-copy h3 { padding-bottom: 8px; border-bottom: 2px solid var(--kb-ink); font-family: var(--font-serif); font-size: 1.5rem; font-weight: 500; }
.kb-window-copy ul { list-style: none; margin: 10px 0 22px; padding: 0; }
.kb-window-copy li { position: relative; padding: 9px 0 9px 28px; border-bottom: 1px solid var(--kb-rule); font-size: 15.5px; line-height: 1.45; }
.kb-window-copy li::before { position: absolute; left: 0; top: 10px; width: 20px; height: 20px; display: grid; place-items: center; border-radius: 50%; font-size: 12px; font-weight: 800; }
.kb-window-copy h3:first-child + ul li::before { content: "✓"; background: var(--kb-green-wash); color: var(--kb-green-deep); }
.kb-window-copy h3:nth-of-type(2) + ul li::before { content: "×"; background: var(--kb-coral-wash); color: #7d2418; }

/* 2: the sink */
.kb-first-row { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: clamp(28px, 5vw, 64px); align-items: start; margin-top: 40px; }
.kb-phone { margin: 0; max-width: 380px; padding: 14px 14px 18px; border-radius: 30px; background: #222b36; }
.kb-phone p { max-width: none !important; margin: 0 0 8px; }
.kb-phone-bar { padding: 8px 12px 12px; text-align: center; font-size: 12.5px; font-weight: 700; letter-spacing: 0.04em; color: var(--kb-on-night); }
.kb-bubble { padding: 12px 14px; border-radius: 18px; font-size: 14.5px; line-height: 1.45; }
.kb-bubble-her { background: #e6ebee; color: var(--kb-ink); border-bottom-left-radius: 4px; margin-right: 34px; }
.kb-bubble-us { background: #1f5fbf; color: #fff; border-bottom-right-radius: 4px; margin-left: 34px; }
.kb-phone .kb-invented { padding: 0 6px; color: var(--kb-on-night-soft); }
.kb-asks h3 { padding-bottom: 8px; border-bottom: 2px solid var(--kb-ink); font-family: var(--font-serif); font-size: 1.5rem; font-weight: 500; }
.kb-asks ol { list-style: none; margin: 0; padding: 0; counter-reset: ask; }
.kb-asks li { display: grid; grid-template-columns: 36px minmax(0, 1fr); gap: 4px 12px; padding: 14px 0; border-bottom: 1px solid var(--kb-rule); counter-increment: ask; }
.kb-asks li::before { content: counter(ask); grid-row: 1 / span 2; display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: var(--kb-blue); color: #fff; font-weight: 800; font-size: 13px; }
.kb-asks strong { font-size: 16px; }
.kb-asks li span { font-size: 14.5px; line-height: 1.45; color: var(--kb-soft); }

/* 3: the cooktop */

/* 4: the island */

/* 5: the refrigerator */
.kb-fridge { position: relative; margin: 0; padding: 26px 26px 18px 44px; border-radius: 18px; background: linear-gradient(135deg, #e9edf1, #d1d8df); border: 2px solid #aab4be; box-shadow: 0 24px 34px -24px rgba(29, 39, 51, 0.6); }

/* 6: the door */

/* Six places leads come from */
.kb-inbox { background: var(--kb-sheet); border-top: 1px solid var(--kb-rule); }
.kb-inbox-head { max-width: 76ch; }
.kb-inbox-head p { margin-top: 18px; }
.kb-doors { list-style: none; margin: 36px 0 0; padding: 0; border: 2px solid var(--kb-ink); border-radius: 8px; overflow: hidden; }
.kb-doors li { display: grid; grid-template-columns: minmax(0, 0.8fr) 40px minmax(0, 1.2fr); gap: 12px; align-items: center; padding: 16px 22px; }
.kb-doors li + li { border-top: 1px solid var(--kb-rule); }
.kb-doors li:nth-child(odd) { background: var(--kb-paper); }
.kb-door-she { font-family: var(--font-serif); font-size: 1.2rem; line-height: 1.25; }
.kb-door-arrow { font-size: 1.4rem; text-align: center; color: var(--kb-blue); }
.kb-door-we { font-size: 15.5px; line-height: 1.5; color: var(--kb-soft); }
.kb-math { scroll-margin-top: 150px; display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: clamp(28px, 5vw, 64px); align-items: start; margin-top: 56px; }
.kb-math h3 { padding-bottom: 8px; border-bottom: 2px solid var(--kb-ink); font-family: var(--font-serif); font-size: 1.5rem; font-weight: 500; }
.kb-math p { margin-top: 14px; }
.kb-sheet { padding: 22px 26px; border: 2px solid var(--kb-ink); border-radius: 8px; background: #fffef9; box-shadow: 8px 8px 0 -2px #e3dccb; }
.kb-sheet ol { list-style: none; margin: 0; padding: 0; }
.kb-sheet li { display: grid; grid-template-columns: 36px minmax(0, 1fr) 110px; gap: 14px; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--kb-rule); }
.kb-sheet-tag { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; background: var(--kb-ink); color: #fff; font-weight: 800; }
.kb-sheet strong { display: block; font-size: 15.5px; line-height: 1.3; }
.kb-sheet li span:not(.kb-sheet-tag):not(.kb-sheet-blank) { display: block; margin-top: 2px; font-size: 13.5px; color: var(--kb-soft); }
.kb-sheet-blank { height: 30px; border-bottom: 2px solid var(--kb-ink); }
.kb-sheet-total { max-width: none !important; margin-top: 18px !important; font-size: 16px; }
.kb-sheet-total em { display: block; margin-top: 4px; font-style: normal; color: var(--kb-soft); }

/* Never */

/* Compare */
.kb-compare { background: var(--kb-paper); }
.kb-compare-table { width: 100%; min-width: 900px; border-collapse: collapse; background: var(--kb-sheet); }
.kb-compare-table th, .kb-compare-table td { padding: 14px 16px; text-align: left; vertical-align: top; font-size: 14.5px; line-height: 1.5; border-bottom: 1px solid var(--kb-rule); }
.kb-compare-table thead th { background: var(--kb-paper); font-family: var(--kb-mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; }
.kb-compare-table thead .kb-th-ours { background: var(--kb-blue); color: #fff; }
.kb-compare-table tbody th { width: 19%; font-family: var(--font-serif); font-size: 1.05rem; font-weight: 500; }
.kb-td-ours { background: var(--kb-blue-wash); font-weight: 500; }
.kb-models { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 22px; margin-top: 24px; font-size: 13.5px; color: var(--kb-soft); }
.kb-models p { max-width: none !important; margin: 0; font-weight: 700; color: var(--kb-ink); }
.kb-models ul { display: flex; flex-wrap: wrap; gap: 8px 20px; margin: 0; padding: 0; list-style: none; }
.kb-models li { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; color: var(--kb-ink); }
.kb-models li span { font-weight: 400; color: var(--kb-soft); }
.kb-model-openai { display: block; }

/* The practice card */

/* Setup and the test sheet */
.kb-how { background: var(--kb-paper); border-top: 1px solid var(--kb-rule); }
.kb-steps { list-style: none; margin: 32px 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border: 2px solid var(--kb-ink); border-radius: 8px; overflow: hidden; background: var(--kb-sheet); }
.kb-steps li { padding: 20px 18px 22px; }
.kb-steps li + li { border-left: 1px solid var(--kb-rule); }
.kb-steps h3 { font-family: var(--font-serif); font-size: 1.2rem; font-weight: 500; }
.kb-steps p { margin-top: 8px; font-size: 14.5px; line-height: 1.5; color: var(--kb-soft); }

/* FAQ */
.kb-faq { background: var(--kb-sheet); border-top: 1px solid var(--kb-rule); }
.kb-faq-grid { display: grid; grid-template-columns: minmax(0, 0.7fr) minmax(0, 1.3fr); gap: clamp(32px, 5vw, 76px); align-items: start; }
.kb-faq-grid > div:first-child { position: sticky; top: 140px; }
.kb-faq-list { border-top: 2px solid var(--kb-ink); }
.kb-faq-list details { border-bottom: 1px solid var(--kb-rule); }
.kb-faq-list summary { display: flex; justify-content: space-between; align-items: center; gap: 18px; min-height: 60px; padding: 14px 0; cursor: pointer; list-style: none; font-family: var(--font-serif); font-size: 1.2rem; line-height: 1.3; letter-spacing: -0.005em; }
.kb-faq-list summary::-webkit-details-marker { display: none; }
.kb-faq-list summary span { flex: none; display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: var(--kb-paper); font-family: var(--font-sans); font-size: 1.2rem; transition: transform 160ms ease-out; }
.kb-faq-list details[open] summary span { transform: rotate(45deg); background: var(--kb-glow); }
.kb-faq-list details p { padding: 0 0 20px; max-width: 70ch; font-size: 16px; color: var(--kb-soft); }
.kb-faq-list details p + p { margin-top: -8px; font-size: 14px; }

/* Close */
.kb-close { background: var(--kb-night); color: var(--kb-on-night); padding: clamp(64px, 8vw, 104px) 0; border-top: 4px solid var(--kb-glow); }
.kb-close-grid { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr); gap: clamp(32px, 5vw, 76px); align-items: start; }
.kb-close h2 { color: #fff; }
.kb-close h2 em { color: var(--kb-glow); }
.kb-close p { margin-top: 18px; max-width: 60ch; color: var(--kb-on-night); }
.kb-close aside { display: grid; gap: 4px; padding: 22px 24px; border: 1px solid rgba(236, 239, 243, 0.22); border-radius: 6px; background: var(--kb-night-2); }
.kb-close aside strong { margin-bottom: 6px; font-size: 12.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--kb-glow); }
.kb-close aside a { display: flex; justify-content: space-between; align-items: center; gap: 12px; min-height: 44px; color: var(--kb-on-night); text-decoration: none; font-weight: 600; font-size: 15px; border-top: 1px solid rgba(236, 239, 243, 0.14); }
.kb-close aside a:hover { color: #fff; text-decoration: underline; }

/* The shared plans block: 44px touch targets */
.kb-page .nj-section .nj-link,
.kb-page .nj-section li > p:last-child > a,
.kb-page .nj-section a:not([class]) { display: inline-flex; align-items: center; min-height: 44px; }

/* Six systems: the plan legend */

@media (max-width: 1080px) {
  .kb-jump { top: 64px; }
  .kb-hero, .kb-middle-grid, .kb-window-row, .kb-first-row, .kb-math, .kb-faq-grid, .kb-close-grid { grid-template-columns: minmax(0, 1fr); }
  .kb-faq-grid > div:first-child { position: static; }
  .kb-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .kb-steps li:nth-child(odd) { border-left: 0; }
  .kb-steps li:nth-child(n + 3) { border-top: 1px solid var(--kb-rule); }
}
@media (max-width: 820px) {
  .kb-doors li { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  .kb-door-arrow { display: none; }
}
@media (max-width: 720px) {
  .kb-wrap { width: min(100% - 40px, 1280px); }
  .kb-hero-shell { padding-top: 84px; }
  .kb-plan { padding: 10px 12px 14px; }
  .kb-tabs { width: 100%; }
  .kb-tabs label { flex: 1; justify-content: center; padding: 0 8px; font-size: 13px; }
  .kb-project dl > div { grid-template-columns: minmax(0, 1fr); }
  .kb-steps { grid-template-columns: minmax(0, 1fr); }
  .kb-steps li + li { border-left: 0; border-top: 1px solid var(--kb-rule); }
  .kb-sheet li { grid-template-columns: 32px minmax(0, 1fr); }
  .kb-sheet-blank { grid-column: 2; }
  .kb-fridge { padding: 22px 16px 14px 34px; }
}
@media (prefers-reduced-motion: reduce) {
  .kb-button, .kb-faq-list summary span, .kb-legend-row, .kb-tabs label, .kb-tri, .kb-marker { transition: none; }
  .kb-button:hover { transform: none; }
}

/* A project brief follows the existing portfolio drawing. */
.kb-build-brief { margin-top: 38px; padding: clamp(22px, 3vw, 38px); background: var(--kb-blue-wash); border-left: 4px solid var(--kb-blue); scroll-margin-top: 140px; }
.kb-build-brief h3 { font-family: var(--font-serif); font-size: clamp(1.5rem, 2.5vw, 2rem); line-height: 1.2; font-weight: 500; }
.kb-build-brief p { margin-top: 16px; max-width: 85ch; }
.kb-build-brief ol { list-style: decimal; margin: 22px 0; padding-left: 24px; display: grid; gap: 16px; max-width: 85ch; }
.kb-build-brief li { padding-left: 8px; }
.kb-build-brief li::marker { color: var(--kb-blue); font-weight: 700; }