/* ==========================================================================
   The Pool Collective — shared stylesheet
   Calm architectural / editorial. Mineral palette. Quiet hairlines.
   Owned by Package 1 (Project Foundation). Do not duplicate elsewhere.
   ========================================================================== */

/* ----------------------------------------------------------------
   1. Design tokens
   ---------------------------------------------------------------- */

:root {
  /* Palette — mineral, Australian, architectural */
  --color-off-white: #F8F3EA;
  --color-off-white-2: #EFE2CF;
  --color-charcoal: #202B2C;
  --color-charcoal-2: #2B3839;
  --color-slate: #647174;
  --color-mineral: #347F9E;
  --color-mineral-deep: #2F6F8A;
  --color-eucalyptus: #A7B99B;
  --color-sand: #D8CDBE;
  --color-sand-2: #EFE2CF;
  --color-teal: #2F8C83;
  --color-apricot: #E9A66F;

  /* Functional aliases */
  --bg: var(--color-off-white);
  --bg-elevated: #FFFFFF;
  --bg-band: var(--color-off-white-2);
  --surface: #FFFFFF;
  --text: var(--color-charcoal);
  --text-quiet: var(--color-slate);
  --text-strong: #162021;
  --accent: var(--color-mineral);
  --accent-hover: var(--color-mineral-deep);

  --hairline: rgba(32, 43, 44, 0.13);
  --hairline-strong: rgba(32, 43, 44, 0.24);
  --hairline-soft: rgba(32, 43, 44, 0.07);

  /* Elevation — soft, low-opacity, layered (never flat shadow-md) */
  --shadow-soft: 0 1px 2px rgba(32, 43, 44, 0.04), 0 6px 20px rgba(32, 43, 44, 0.06);
  --shadow-lift: 0 14px 40px rgba(32, 43, 44, 0.10);

  /* Type families */
  --font-display: "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-sans: "Public Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  /* Type scale (fluid where useful) */
  --t-display-xl: clamp(2.625rem, 5vw + 0.5rem, 4.875rem);
  --t-display-lg: clamp(2.125rem, 3.5vw + 0.5rem, 3.5rem);
  --t-display-md: clamp(1.625rem, 2.25vw + 0.75rem, 2.5rem);
  --t-display-sm: 1.375rem;
  --t-heading-sm: 1.0625rem;
  --t-body-lg: 1.0625rem;
  --t-body: 1rem;
  --t-body-sm: 0.875rem;
  --t-meta: 0.8125rem;
  --t-eyebrow: 0.6875rem;

  /* Spacing (8px base, with a few half-steps) */
  --s-1: 0.25rem;
  --s-2: 0.5rem;
  --s-3: 0.75rem;
  --s-4: 1rem;
  --s-5: 1.5rem;
  --s-6: 2rem;
  --s-7: 3rem;
  --s-8: 4rem;
  --s-9: 6rem;
  --s-10: 8rem;
  --s-11: 10rem;

  /* Layout */
  --container-max: 78rem; /* 1248px */
  --container-narrow: 44rem; /* 704px */
  --container-pad-x: clamp(1.25rem, 4vw, 3rem);
  --header-height: 88px;

  /* Radii — restrained */
  --radius-1: 2px;
  --radius-2: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;
  --radius-pill: 999px;

  /* Easing & duration */
  --ease-out: cubic-bezier(0.2, 0.7, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.32, 0.64, 1);
  --dur-1: 160ms;
  --dur-2: 240ms;
  --dur-3: 360ms;
}

/* ----------------------------------------------------------------
   2. Reset (minimal, opinionated)
   ---------------------------------------------------------------- */

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

html { -webkit-text-size-adjust: 100%; text-rendering: optimizeLegibility; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: var(--t-body);
  line-height: 1.6;
  font-weight: 400;
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: 400;
  font-family: var(--font-display);
  color: var(--text-strong);
  letter-spacing: -0.01em;
}

p { margin: 0; }

img, svg, video { display: block; max-width: 100%; height: auto; }

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  background: transparent;
  border: 0;
  padding: 0;
  cursor: pointer;
}

ul, ol { margin: 0; padding: 0; list-style: none; }

hr {
  border: 0;
  border-top: 1px solid var(--hairline);
  margin: 0;
}

::selection { background: var(--color-charcoal); color: var(--bg); }

/* Focus-visible — quiet but clear */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: var(--radius-1);
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -10000px;
  top: var(--s-3);
  padding: var(--s-3) var(--s-4);
  background: var(--color-charcoal);
  color: var(--bg);
  font-size: var(--t-body-sm);
  letter-spacing: 0.02em;
  z-index: 1000;
}
.skip-link:focus-visible {
  left: var(--s-3);
  outline-offset: 0;
}

/* ----------------------------------------------------------------
   3. Layout primitives
   ---------------------------------------------------------------- */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad-x);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.section {
  padding-block: var(--s-7);
}
@media (min-width: 768px) {
  .section { padding-block: var(--s-8); }
}
@media (min-width: 1280px) {
  .section--lg { padding-block: var(--s-9); }
}

.section--band {
  background:
    linear-gradient(135deg, rgba(233, 166, 111, 0.16), rgba(52, 127, 158, 0.06) 46%, rgba(167, 185, 155, 0.18)),
    var(--bg-band);
}

.section--bordered {
  border-top: 1px solid var(--hairline);
}

.stack-2 > * + * { margin-top: var(--s-2); }
.stack-3 > * + * { margin-top: var(--s-3); }
.stack-4 > * + * { margin-top: var(--s-4); }
.stack-5 > * + * { margin-top: var(--s-5); }
.stack-6 > * + * { margin-top: var(--s-6); }
.stack-7 > * + * { margin-top: var(--s-7); }

/* Section heading block — eyebrow + heading + intro */
.section-head {
  display: flex;
  flex-direction: column;
  gap: var(--s-4);
  max-width: 44rem;
}
.section-head--center {
  margin-inline: auto;
  text-align: center;
  align-items: center;
}
.section-head__intro {
  color: var(--text-quiet);
  font-size: var(--t-body-lg);
  line-height: 1.65;
  max-width: 36rem;
}

/* ----------------------------------------------------------------
   4. Typography utilities
   ---------------------------------------------------------------- */

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  font-family: var(--font-sans);
  font-size: var(--t-eyebrow);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-quiet);
  font-weight: 500;
}
.eyebrow::before {
  content: "";
  width: 1.5rem;
  height: 1px;
  background: currentColor;
  opacity: 0.7;
}
.eyebrow--no-rule::before { display: none; }

.display-xl {
  font-family: var(--font-display);
  font-size: var(--t-display-xl);
  line-height: 0.98;
  letter-spacing: -0.022em;
  font-weight: 320;
}
.display-lg {
  font-family: var(--font-display);
  font-size: var(--t-display-lg);
  line-height: 1.02;
  letter-spacing: -0.018em;
  font-weight: 340;
}
.display-md {
  font-family: var(--font-display);
  font-size: var(--t-display-md);
  line-height: 1.12;
  letter-spacing: -0.012em;
  font-weight: 380;
}
.display-sm {
  font-family: var(--font-display);
  font-size: var(--t-display-sm);
  line-height: 1.25;
  font-weight: 420;
}
.lede {
  font-family: var(--font-display);
  font-size: 1.25rem;
  line-height: 1.5;
  color: var(--text-quiet);
  font-weight: 380;
}
@media (min-width: 768px) {
  .lede { font-size: 1.4rem; }
}

.body-lg { font-size: var(--t-body-lg); line-height: 1.65; }
.body { font-size: var(--t-body); line-height: 1.6; }
.body-sm { font-size: var(--t-body-sm); line-height: 1.55; }
.meta { font-size: var(--t-meta); color: var(--text-quiet); letter-spacing: 0.01em; }

.muted { color: var(--text-quiet); }
.text-emphasis {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
}

/* Editorial link — underline animates from left */
.longform {
  max-width: 48rem;
}
.longform > * + * { margin-top: var(--s-5); }
.longform h2 {
  margin-top: var(--s-8);
  font-family: var(--font-display);
  font-size: var(--t-display-md);
  line-height: 1.12;
  color: var(--text-strong);
}
.longform h3 {
  margin-top: var(--s-6);
  font-family: var(--font-display);
  font-size: var(--t-display-sm);
  line-height: 1.2;
  color: var(--text-strong);
}
.longform p,
.longform li {
  color: var(--text-quiet);
  font-size: var(--t-body-lg);
  line-height: 1.72;
}
.longform ul,
.longform ol {
  padding-left: 1.25rem;
}
.longform table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--t-body-sm);
}
.longform th,
.longform td {
  text-align: left;
  padding: var(--s-3) var(--s-3);
  border-bottom: 1px solid var(--hairline);
  vertical-align: top;
}
.longform th {
  font-size: var(--t-eyebrow);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-quiet);
}
.longform hr {
  border: 0;
  border-top: 1px solid var(--hairline);
  margin-block: var(--s-7);
}
.longform em { color: var(--text-quiet); }

.hub-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-7);
  align-items: start;
}

.hub-toc {
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.72);
  padding: var(--s-5);
  box-shadow: var(--shadow-soft);
}

.hub-toc__nav {
  display: grid;
  gap: var(--s-2);
  margin-top: var(--s-4);
}

.hub-toc__nav a {
  color: var(--text);
  font-size: var(--t-body-sm);
  line-height: 1.45;
  padding-block: 0.35rem;
  border-bottom: 1px solid rgba(32, 43, 44, 0.08);
}

.hub-toc__nav a:hover,
.hub-toc__nav a:focus-visible {
  color: var(--accent);
}

.hub-longform {
  max-width: 54rem;
}

.hub-longform > h2:first-of-type {
  margin-top: 0;
}

@media (min-width: 980px) {
  .hub-layout {
    grid-template-columns: minmax(14rem, 18rem) minmax(0, 1fr);
    gap: var(--s-9);
  }

  .hub-toc {
    position: sticky;
    top: calc(var(--header-height) + var(--s-5));
  }
}

/* Concrete pool bespoke hub */
.concrete-hero {
  padding-bottom: var(--s-8);
}

.concrete-hero__grid {
  display: grid;
  gap: var(--s-7);
  align-items: center;
}

.concrete-hero__media {
  position: relative;
  min-height: 20rem;
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow-lift);
}

.concrete-hero__media img {
  width: 100%;
  height: 100%;
  min-height: inherit;
  object-fit: cover;
}

.concrete-hero__media figcaption {
  position: absolute;
  right: var(--s-4);
  bottom: var(--s-4);
  display: grid;
  gap: 0.2rem;
  min-width: 10rem;
  padding: var(--s-4);
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: var(--radius-md);
  background: rgba(248, 243, 234, 0.88);
  backdrop-filter: blur(10px);
}

.concrete-hero__media figcaption span,
.concrete-snapshot article span,
.concrete-finish-grid article span,
.concrete-choice-grid article span {
  color: var(--text-quiet);
  font-size: var(--t-eyebrow);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.concrete-hero__media figcaption strong {
  color: var(--text-strong);
  font-family: var(--font-display);
  font-size: var(--t-heading-sm);
  font-weight: 600;
}

.concrete-snapshot,
.concrete-risk,
.concrete-lifespan,
.concrete-final {
  display: grid;
  gap: var(--s-6);
  align-items: start;
}

.concrete-snapshot {
  padding: var(--s-6);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(52, 127, 158, 0.11), rgba(233, 166, 111, 0.16)),
    var(--surface);
}

.concrete-snapshot__grid,
.concrete-note-grid,
.concrete-choice-grid,
.concrete-decision-grid {
  display: grid;
  gap: var(--s-4);
}

.concrete-snapshot article,
.concrete-proof-card,
.concrete-note-grid article,
.concrete-choice-grid article,
.concrete-decision-grid article {
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.72);
  padding: var(--s-5);
}

.concrete-snapshot article strong,
.concrete-choice-grid article p {
  display: block;
  margin-top: var(--s-2);
}

.concrete-snapshot article strong,
.concrete-proof-card h3,
.concrete-note-grid h3,
.concrete-choice-grid span,
.concrete-decision-grid h3,
.concrete-timeline h3,
.concrete-finish-grid h3 {
  color: var(--text-strong);
  font-family: var(--font-display);
  font-weight: 600;
}

.concrete-feature-grid,
.concrete-cost-layout {
  display: grid;
  gap: var(--s-7);
  align-items: start;
}

.concrete-proof-card p,
.concrete-note-grid p,
.concrete-choice-grid p,
.concrete-decision-grid li,
.concrete-risk p {
  color: var(--text-quiet);
  line-height: 1.65;
}

/* ----------------------------------------------------------------
   Flip card — reusable component
   Used wherever a content card should reveal detail on click.
   Variants: --numbered for step/process content.
   Wrap in a section-specific class (e.g. .concrete-timeline) for
   bespoke styling per page.
   ---------------------------------------------------------------- */

.flip-card-grid {
  display: grid;
  gap: var(--s-4);
}

.flip-card {
  position: relative;
  display: grid;
  width: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
  perspective: 1200px;
  -webkit-tap-highlight-color: transparent;
}

.flip-card:focus { outline: none; }

.flip-card__inner {
  position: relative;
  width: 100%;
  min-height: 15rem;
  display: grid;
  grid-template-rows: 1fr;
  transform-style: preserve-3d;
  transition: transform 600ms var(--ease-out);
  border-radius: var(--radius-md);
}

.flip-card:focus-visible .flip-card__inner {
  box-shadow: 0 0 0 2px var(--accent);
}

.flip-card.is-flipped .flip-card__inner {
  transform: rotateY(180deg);
}

.flip-card__face {
  position: relative;
  grid-area: 1 / 1;
  display: flex;
  flex-direction: column;
  padding: var(--s-5);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.78);
  -webkit-backface-visibility: hidden;
          backface-visibility: hidden;
  transition: background-color var(--dur-2) var(--ease-out),
              border-color var(--dur-2) var(--ease-out);
}

.flip-card__face--back {
  transform: rotateY(180deg);
}

.flip-card:hover:not(.is-flipped) .flip-card__face--front,
.flip-card.is-flipped:hover .flip-card__face--back {
  background: rgba(255, 255, 255, 0.94);
  border-color: var(--hairline-strong);
}

.flip-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.1875rem;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--text-strong);
  font-weight: 500;
}

.flip-card__label {
  font-family: var(--font-sans);
  font-size: var(--t-eyebrow);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-quiet);
  margin-bottom: var(--s-3);
}

.flip-card__body {
  font-size: var(--t-body-sm);
  line-height: 1.6;
  color: var(--text);
}

.flip-card__hint {
  margin-top: auto;
  padding-top: var(--s-4);
  font-family: var(--font-sans);
  font-size: var(--t-meta);
  letter-spacing: 0.04em;
  color: var(--text-quiet);
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  transition: color var(--dur-2) var(--ease-out);
}

.flip-card:hover .flip-card__hint {
  color: var(--text-strong);
}

/* Numbered variant — for step / process content */
.flip-card--numbered .flip-card__face--front {
  gap: var(--s-3);
}

.flip-card--numbered .flip-card__number {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 4vw, 2.875rem);
  line-height: 1;
  font-weight: 400;
  color: var(--accent);
  letter-spacing: -0.02em;
}

/* Reduced motion: crossfade instead of 3D rotate */
@media (prefers-reduced-motion: reduce) {
  .flip-card__inner {
    transition: none;
    transform: none !important;
  }
  .flip-card__face {
    transition: opacity var(--dur-2) var(--ease-out);
  }
  .flip-card__face--back {
    transform: none;
    opacity: 0;
    pointer-events: none;
  }
  .flip-card.is-flipped .flip-card__face--front {
    opacity: 0;
    pointer-events: none;
  }
  .flip-card.is-flipped .flip-card__face--back {
    opacity: 1;
    pointer-events: auto;
  }
}

/* ----------------------------------------------------------------
   Hub layout + page TOC — reusable structure for long-form hub pages.
   Desktop (≥1080px): two-column grid with sticky sidebar TOC.
   Mobile / tablet: single column, TOC collapses to <details> accordion
   at the top of the content area.
   ---------------------------------------------------------------- */

.toc-layout {
  padding-block: var(--s-7) 0;
}

.toc-layout__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-5);
  align-items: start;
}

/* Strip the inner container of sections placed inside the layout column
   — the outer .container on the hub-layout already provides padding. */
.toc-layout__content > .section > .container,
.toc-layout__content > section > .container {
  padding-inline: 0;
  max-width: none;
}

/* TOC-column sections use the same condensed rhythm as the rest of the site
   (see .section) — no special-casing needed now that the global rhythm is
   already calm. Container inset is still zeroed below for grid alignment. */

@media (min-width: 1080px) {
  .toc-layout__grid {
    grid-template-columns: minmax(180px, 200px) minmax(0, 1fr);
    gap: var(--s-6);
  }
  .toc-layout__toc {
    position: sticky;
    top: var(--s-5);
    max-height: calc(100vh - var(--s-7));
    overflow-y: auto;
  }

  /* Sub-grids inside concrete sections were designed for full-width
     parents. Stack them single-column inside the hub layout so the
     remaining content column doesn't get squeezed twice over. */
  .toc-layout__content .concrete-snapshot,
  .toc-layout__content .concrete-feature-grid,
  .toc-layout__content .concrete-cost-layout,
  .toc-layout__content .concrete-risk,
  .toc-layout__content .concrete-lifespan,
  .toc-layout__content .concrete-final {
    grid-template-columns: 1fr;
    gap: var(--s-7);
  }
}

@media (min-width: 1280px) {
  .toc-layout__grid {
    grid-template-columns: minmax(200px, 220px) minmax(0, 1fr);
    gap: var(--s-7);
  }

  /* At wider viewports the content column is wide enough that some
     sub-grids can return to their original 2-column layouts. */
  .toc-layout__content .concrete-feature-grid,
  .toc-layout__content .concrete-cost-layout {
    grid-template-columns: minmax(14rem, 0.7fr) minmax(0, 1.3fr);
  }
}

.page-toc {
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.78);
}

.page-toc__details {
  /* details element fills the toc card */
}

.page-toc__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--s-4) var(--s-5);
  font-family: var(--font-sans);
  font-size: var(--t-eyebrow);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-quiet);
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.page-toc__summary::-webkit-details-marker { display: none; }
.page-toc__summary::marker { display: none; content: ""; }

.page-toc__summary::after {
  content: "+";
  font-family: var(--font-display);
  font-size: 1.25rem;
  line-height: 1;
  color: var(--text);
  transition: transform var(--dur-2) var(--ease-out);
}

.page-toc__details[open] .page-toc__summary::after {
  content: "−";
}

.page-toc__nav {
  padding: 0 var(--s-3) var(--s-3);
  border-top: 1px solid var(--hairline-soft);
}

.page-toc__list {
  list-style: none;
  margin: 0;
  padding: var(--s-3) 0 0;
  display: grid;
  gap: 2px;
}

.page-toc__link {
  display: block;
  padding: var(--s-2) var(--s-3);
  font-family: var(--font-sans);
  font-size: var(--t-body-sm);
  line-height: 1.35;
  color: var(--text-quiet);
  text-decoration: none;
  border-left: 2px solid transparent;
  border-radius: 0 var(--radius-2) var(--radius-2) 0;
  transition: color var(--dur-2) var(--ease-out),
              border-color var(--dur-2) var(--ease-out),
              background-color var(--dur-2) var(--ease-out);
}

.page-toc__link:hover {
  color: var(--text-strong);
  background: rgba(32, 43, 44, 0.03);
}

.page-toc__link[aria-current="true"] {
  color: var(--accent);
  border-left-color: var(--accent);
  background: rgba(52, 127, 158, 0.06);
  font-weight: 500;
}

@media (min-width: 1080px) {
  .page-toc {
    background: transparent;
    border: 0;
  }
  .page-toc__summary {
    pointer-events: none;
    padding: 0 0 var(--s-3) 0;
    border-bottom: 1px solid var(--hairline);
  }
  .page-toc__summary::after { display: none; }
  .page-toc__nav {
    padding: var(--s-3) 0 0;
    border-top: 0;
  }
  .page-toc__list { padding-top: 0; }
  /* Force list visible regardless of details open state on desktop */
  .page-toc__details > .page-toc__nav {
    display: block;
  }
}

/* ----------------------------------------------------------------
   Feature tabs — reusable component
   Three or more tabs at top (small thumb + label), click to reveal
   a panel below with heading, text, and a large supporting image.
   WAI-ARIA tab pattern with arrow-key navigation.
   ---------------------------------------------------------------- */

.feature-tabs {
  display: grid;
  gap: var(--s-5);
}

.feature-tabs__nav {
  display: grid;
  gap: var(--s-3);
  grid-template-columns: 1fr;
}

.feature-tabs__tab {
  display: grid;
  grid-template-columns: minmax(72px, 96px) 1fr;
  gap: var(--s-4);
  align-items: center;
  padding: var(--s-3);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.65);
  cursor: pointer;
  text-align: left;
  font: inherit;
  color: inherit;
  transition: background-color var(--dur-2) var(--ease-out),
              border-color var(--dur-2) var(--ease-out),
              box-shadow var(--dur-2) var(--ease-out);
  -webkit-tap-highlight-color: transparent;
}

.feature-tabs__tab:hover {
  background: rgba(255, 255, 255, 0.92);
  border-color: var(--hairline-strong);
}

.feature-tabs__tab[aria-selected="true"] {
  background: rgba(255, 255, 255, 0.98);
  border-color: var(--accent);
  box-shadow: 0 6px 18px rgba(32, 43, 44, 0.06);
}

.feature-tabs__tab:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.feature-tabs__tab-thumb {
  overflow: hidden;
  border-radius: var(--radius-2);
  background: var(--bg-band);
  aspect-ratio: 4 / 3;
}

.feature-tabs__tab-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.feature-tabs__tab-label {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.0625rem;
  line-height: 1.25;
  color: var(--text-strong);
  letter-spacing: -0.005em;
}

.feature-tabs__panel {
  display: grid;
  gap: var(--s-6);
  padding: var(--s-6);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.78);
  align-items: start;
}

.feature-tabs__panel[hidden] { display: none; }

.feature-tabs__panel-content {
  display: grid;
  gap: var(--s-4);
}

.feature-tabs__panel-eyebrow {
  font-family: var(--font-sans);
  font-size: var(--t-eyebrow);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-quiet);
}

.feature-tabs__panel-heading {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--t-display-sm);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--text-strong);
  font-weight: 500;
}

.feature-tabs__panel-body {
  font-size: var(--t-body);
  line-height: 1.6;
  color: var(--text);
}

.feature-tabs__panel-meta {
  font-size: var(--t-body-sm);
  color: var(--text-quiet);
  font-weight: 500;
  padding-top: var(--s-3);
  border-top: 1px solid var(--hairline);
}

.feature-tabs__panel-media {
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--bg-band);
  aspect-ratio: 4 / 3;
  margin: 0;
}

.feature-tabs__panel-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

@media (min-width: 760px) {
  .feature-tabs__nav {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .feature-tabs__tab {
    grid-template-columns: 1fr;
    gap: var(--s-3);
    padding: var(--s-4);
  }
}

@media (min-width: 980px) {
  .feature-tabs__panel {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    padding: var(--s-7);
    gap: var(--s-7);
  }
}

/* ----------------------------------------------------------------
   Placeholders — visible-but-clearly-placeholder asset slots.
   Image, infographic, and decision-tree variants. Use until real
   assets are produced.
   ---------------------------------------------------------------- */

.asset-placeholder {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  padding: var(--s-6);
  border: 1px dashed var(--hairline-strong);
  border-radius: var(--radius-md);
  background:
    repeating-linear-gradient(
      135deg,
      rgba(32, 43, 44, 0.018) 0,
      rgba(32, 43, 44, 0.018) 14px,
      transparent 14px,
      transparent 28px
    ),
    var(--bg-band);
  color: var(--text-quiet);
  text-align: center;
}

.asset-placeholder__label {
  font-family: var(--font-sans);
  font-size: var(--t-eyebrow);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-quiet);
  margin-bottom: var(--s-2);
}

.asset-placeholder__caption {
  font-size: var(--t-body-sm);
  line-height: 1.5;
  color: var(--text);
  max-width: 32rem;
}

.asset-placeholder--image { aspect-ratio: 4 / 3; }
.asset-placeholder--wide { aspect-ratio: 16 / 9; }
.asset-placeholder--infographic { aspect-ratio: 3 / 1; min-height: 12rem; }
.asset-placeholder--tree { aspect-ratio: 16 / 9; min-height: 16rem; }

.asset-placeholder--inline {
  aspect-ratio: 4 / 3;
  padding: var(--s-3);
}

.asset-placeholder--inline .asset-placeholder__label {
  font-size: 0.625rem;
  margin: 0;
}

/* ----------------------------------------------------------------
   Image–text row — alternating editorial layout for long sections.
   ---------------------------------------------------------------- */

.image-text-row {
  display: grid;
  gap: var(--s-6);
  align-items: center;
}

.image-text-row__body {
  display: grid;
  gap: var(--s-4);
}

.image-text-row__media {
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--bg-band);
  aspect-ratio: 4 / 3;
  margin: 0;
}

.image-text-row__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.image-text-row__media figcaption {
  position: absolute;
  inset: auto var(--s-4) var(--s-4) auto;
  padding: var(--s-2) var(--s-3);
  background: rgba(255, 255, 255, 0.92);
  border-radius: var(--radius-2);
  font-size: var(--t-meta);
  color: var(--text);
}

@media (min-width: 880px) {
  .image-text-row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    gap: var(--s-7);
  }
  .image-text-row--reverse {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  }
  .image-text-row--reverse .image-text-row__media {
    order: 2;
  }
}

/* ----------------------------------------------------------------
   Article link — cross-link to a deeper article. Visible affordance
   that makes "Read more" links feel like content gateways.
   ---------------------------------------------------------------- */

.article-link {
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  padding: var(--s-3) var(--s-4);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.6);
  color: var(--text-strong);
  text-decoration: none;
  font-family: var(--font-sans);
  font-size: var(--t-body-sm);
  line-height: 1.4;
  transition: background-color var(--dur-2) var(--ease-out),
              border-color var(--dur-2) var(--ease-out),
              transform var(--dur-2) var(--ease-out);
  max-width: 38rem;
}

.article-link:hover,
.article-link:focus-visible {
  background: rgba(255, 255, 255, 0.95);
  border-color: var(--hairline-strong);
  transform: translateY(-1px);
}

.article-link__kicker {
  font-size: var(--t-eyebrow);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-quiet);
  display: block;
  margin-bottom: 2px;
}

.article-link__title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1rem;
  letter-spacing: -0.005em;
}

.article-link__arrow {
  margin-left: auto;
  flex-shrink: 0;
  color: var(--accent);
  font-size: 1.125rem;
}

.article-link[data-article-status="planned"] {
  background: repeating-linear-gradient(
    135deg,
    rgba(32, 43, 44, 0.02) 0,
    rgba(32, 43, 44, 0.02) 10px,
    transparent 10px,
    transparent 20px
  ), rgba(255, 255, 255, 0.4);
  border-style: dashed;
}

.article-link[data-article-status="planned"] .article-link__kicker::after {
  content: " · placeholder";
  text-transform: none;
  letter-spacing: 0.02em;
  color: var(--color-apricot);
}

/* ----------------------------------------------------------------
   Stat moment — Recurly-style big number pull quote.
   ---------------------------------------------------------------- */

.stat-moment {
  display: grid;
  gap: var(--s-4);
  padding: var(--s-7) var(--s-6);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  background:
    linear-gradient(135deg, rgba(52, 127, 158, 0.06), rgba(255, 255, 255, 0.7));
  align-items: center;
}

.stat-moment__number {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 6vw, 5rem);
  line-height: 0.95;
  letter-spacing: -0.03em;
  color: var(--accent);
  font-weight: 400;
  white-space: nowrap;
  word-break: keep-all;
}

.stat-moment__caption {
  font-family: var(--font-display);
  font-size: var(--t-display-sm);
  line-height: 1.3;
  color: var(--text-strong);
  font-weight: 500;
  letter-spacing: -0.01em;
}

.stat-moment__note {
  font-size: var(--t-body-sm);
  color: var(--text-quiet);
  line-height: 1.6;
}

@media (min-width: 760px) {
  .stat-moment {
    grid-template-columns: auto minmax(0, 1fr);
    gap: var(--s-7);
    padding: var(--s-8) var(--s-7);
    align-items: center;
  }
}

/* ----------------------------------------------------------------
   Icon stat grid — Recurly-style three/four-up icon row.
   Used for the decision snapshot with small icons above labels.
   ---------------------------------------------------------------- */

.icon-stat-grid {
  display: grid;
  gap: var(--s-4);
  grid-template-columns: 1fr;
}

.icon-stat-grid article {
  display: grid;
  gap: var(--s-3);
  padding: var(--s-5);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.78);
}

.icon-stat-grid article span {
  font-family: var(--font-sans);
  font-size: var(--t-eyebrow);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-quiet);
}

.icon-stat-grid article strong {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.0625rem;
  line-height: 1.3;
  color: var(--text-strong);
  letter-spacing: -0.005em;
}

.icon-stat-grid__icon {
  width: 2.5rem;
  height: 2.5rem;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: rgba(52, 127, 158, 0.12);
  color: var(--accent);
  font-size: 1.125rem;
  line-height: 1;
  margin-bottom: var(--s-1);
}

@media (min-width: 760px) {
  .icon-stat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .icon-stat-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ----------------------------------------------------------------
   Feature banner — Recurly-style attention banner with image / icon
   on one side, text + CTA on the other.
   ---------------------------------------------------------------- */

.feature-banner {
  display: grid;
  gap: var(--s-5);
  padding: var(--s-7) var(--s-6);
  border-radius: var(--radius-md);
  background:
    linear-gradient(135deg, rgba(52, 127, 158, 0.12), rgba(167, 185, 155, 0.18)),
    var(--bg-elevated);
  border: 1px solid var(--hairline);
  align-items: center;
}

.feature-banner__body {
  display: grid;
  gap: var(--s-3);
}

.feature-banner__eyebrow {
  font-family: var(--font-sans);
  font-size: var(--t-eyebrow);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-quiet);
}

.feature-banner__heading {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--t-display-md);
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--text-strong);
  font-weight: 500;
}

.feature-banner__body p {
  color: var(--text-quiet);
  line-height: 1.6;
  font-size: var(--t-body);
}

@media (min-width: 760px) {
  .feature-banner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: var(--s-7);
    padding: var(--s-8) var(--s-7);
  }
}

/* ----------------------------------------------------------------
   Concrete-pool bespoke overrides
   ---------------------------------------------------------------- */

.concrete-finish-tabs .feature-tabs__tab[aria-selected="true"] {
  background:
    linear-gradient(180deg, rgba(167, 185, 155, 0.16), rgba(255, 255, 255, 0.98));
  border-color: var(--accent);
  border-top: 2px solid var(--accent);
}

.concrete-finish-tabs .feature-tabs__panel {
  background: rgba(255, 255, 255, 0.86);
  border-top: 2px solid var(--accent);
}

.concrete-snapshot__icon-grid {
  margin-top: var(--s-5);
}

/* ----------------------------------------------------------------
   Concrete timeline — bespoke wrapper for the concrete pool build
   process. Inherits .flip-card mechanics, adds page-specific tone.
   ---------------------------------------------------------------- */

.concrete-timeline {
  display: grid;
  gap: var(--s-4);
}

.concrete-timeline .flip-card__inner {
  min-height: 16rem;
}

.concrete-timeline .flip-card__face {
  background: rgba(255, 255, 255, 0.86);
}

.concrete-timeline .flip-card__face--front {
  border-top: 2px solid var(--accent);
}

.concrete-finish-grid p {
  color: var(--text-quiet);
  line-height: 1.62;
}

.concrete-finish-grid {
  display: grid;
  gap: var(--s-4);
}

.concrete-finish-grid article {
  display: grid;
  gap: var(--s-3);
  padding: var(--s-5);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.concrete-finish-grid article:nth-child(2) {
  background: rgba(167, 185, 155, 0.18);
}

.concrete-finish-grid article:nth-child(3) {
  background: rgba(52, 127, 158, 0.12);
}

.concrete-finish-grid strong {
  color: var(--text-strong);
  font-size: var(--t-body-sm);
  line-height: 1.5;
}

.concrete-choice-grid {
  margin-top: var(--s-6);
}

.concrete-risk {
  padding: var(--s-7);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(233, 166, 111, 0.14), rgba(255, 255, 255, 0.72)),
    var(--surface);
  border: 1px solid var(--hairline);
}

.concrete-risk__list {
  display: grid;
  gap: var(--s-4);
}

.concrete-lifespan {
  grid-template-columns: 1fr;
}

.concrete-lifespan__number {
  color: var(--accent);
  font-family: var(--font-display);
  font-size: clamp(4rem, 16vw, 10rem);
  line-height: 0.85;
}

.concrete-decision-grid ul {
  display: grid;
  gap: var(--s-3);
  margin: var(--s-4) 0 0;
  padding-left: 1.1rem;
}

.concrete-final {
  padding: var(--s-7);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(52, 127, 158, 0.12), rgba(47, 140, 131, 0.1) 45%, rgba(233, 166, 111, 0.16)),
    var(--surface);
}

@media (min-width: 760px) {
  .concrete-snapshot__grid,
  .concrete-note-grid,
  .concrete-choice-grid,
  .concrete-decision-grid,
  .concrete-finish-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .concrete-finish-grid article:last-child {
    grid-column: span 2;
  }

  .concrete-timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .concrete-hero__grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: var(--s-9);
  }

  .concrete-hero__media {
    min-height: 32rem;
  }

  .concrete-snapshot,
  .concrete-risk,
  .concrete-lifespan,
  .concrete-final,
  .concrete-feature-grid,
  .concrete-cost-layout {
    grid-template-columns: minmax(14rem, 0.8fr) minmax(0, 1.2fr);
  }

  .concrete-snapshot__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .concrete-timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .concrete-finish-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .concrete-finish-grid article:last-child {
    grid-column: auto;
  }
}

.link {
  position: relative;
  display: inline-block;
  color: var(--text-strong);
  padding-bottom: 1px;
  background-image: linear-gradient(currentColor, currentColor);
  background-position: 0 100%;
  background-repeat: no-repeat;
  background-size: 0 1px;
  transition: background-size var(--dur-2) var(--ease-out);
}
.link:hover,
.link:focus-visible { background-size: 100% 1px; }

.link--quiet {
  color: var(--text-quiet);
}
.link--quiet:hover,
.link--quiet:focus-visible { color: var(--text-strong); }

.link-arrow {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5em;
  font-size: var(--t-body-sm);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--color-mineral-deep);
  transition: color var(--dur-2) var(--ease-out);
}
.link-arrow::after {
  content: "→";
  font-family: var(--font-sans);
  transition: transform var(--dur-2) var(--ease-out);
  display: inline-block;
}
.link-arrow:hover::after,
.link-arrow:focus-visible::after { transform: translateX(4px); }
.link-arrow:hover,
.link-arrow:focus-visible { color: var(--color-teal); }

/* ----------------------------------------------------------------
   5. Buttons
   ---------------------------------------------------------------- */

.btn {
  --btn-pad-y: 0.875rem;
  --btn-pad-x: 1.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6em;
  min-height: 44px; /* touch-target floor — keeps compact btn--sm tappable */
  padding: var(--btn-pad-y) var(--btn-pad-x);
  font-family: var(--font-sans);
  font-size: var(--t-body-sm);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 500;
  line-height: 1;
  border: 1px solid transparent;
  border-radius: var(--radius-1);
  cursor: pointer;
  transition: background-color var(--dur-2) var(--ease-out),
              color var(--dur-2) var(--ease-out),
              border-color var(--dur-2) var(--ease-out),
              box-shadow var(--dur-2) var(--ease-out),
              transform var(--dur-1) var(--ease-out);
  text-decoration: none;
}
.btn:active { transform: translateY(1px); }

.btn--primary {
  background: linear-gradient(135deg, var(--color-mineral), var(--color-teal));
  color: #FFFFFF;
  border-color: rgba(32, 43, 44, 0.08);
  box-shadow: 0 8px 18px rgba(52, 127, 158, 0.18);
}
.btn--primary:hover,
.btn--primary:focus-visible {
  background: linear-gradient(135deg, var(--color-mineral-deep), #287970);
  border-color: rgba(32, 43, 44, 0.12);
  box-shadow: 0 10px 24px rgba(52, 127, 158, 0.24);
}

.btn--ghost {
  background: transparent;
  color: var(--text-strong);
  border-color: var(--hairline-strong);
}
.btn--ghost:hover,
.btn--ghost:focus-visible {
  border-color: var(--color-charcoal);
  background: rgba(32, 43, 44, 0.04);
}

.btn--quiet {
  background: transparent;
  color: var(--text-strong);
  padding-inline: 0;
  border: 0;
}
.btn--quiet::after {
  content: "→";
  margin-left: 0.5em;
  transition: transform var(--dur-2) var(--ease-out);
  display: inline-block;
}
.btn--quiet:hover::after,
.btn--quiet:focus-visible::after { transform: translateX(4px); }

.btn--sm { --btn-pad-y: 0.625rem; --btn-pad-x: 1.125rem; font-size: 0.75rem; }

.btn-group {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--s-3);
}

/* ----------------------------------------------------------------
   6. Site header
   ---------------------------------------------------------------- */

.site-header {
  position: relative;
  z-index: 50;
  background: var(--bg);
  border-bottom: 1px solid var(--hairline);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-5);
  padding-block: 1.25rem;
}

/* Wordmark — stacked: THE POOL ─ COLLECTIVE */
.wordmark {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
  color: var(--text-strong);
  line-height: 1;
  padding: var(--s-1) var(--s-2);
  margin-left: calc(var(--s-2) * -1);
}
.wordmark__top,
.wordmark__bottom {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.34em;
  text-indent: 0.34em; /* compensate trailing tracking */
  text-transform: uppercase;
}
.wordmark__rule {
  width: 1.75rem;
  height: 1px;
  background: currentColor;
  margin-block: 0.4rem;
  opacity: 0.85;
}
@media (min-width: 1024px) {
  .wordmark__top,
  .wordmark__bottom { font-size: 0.8125rem; }
  .wordmark__rule { width: 2rem; }
}

/* Desktop nav */
.site-nav {
  display: none;
}
@media (min-width: 960px) {
  .site-nav {
    display: flex;
    align-items: center;
    gap: clamp(1.25rem, 2.4vw, 2.5rem);
  }
}
.site-nav__link {
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text);
  font-weight: 500;
  padding-block: var(--s-2);
  position: relative;
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: auto;
  bottom: 0;
  height: 1px;
  width: 0;
  background: currentColor;
  transition: width var(--dur-2) var(--ease-out);
}
.site-nav__link:hover::after,
.site-nav__link:focus-visible::after,
.site-nav__link[aria-current="page"]::after { width: 100%; }
.site-nav__link[aria-current="page"] { color: var(--text-strong); }

.site-header__cta {
  display: none;
}
@media (min-width: 1140px) {
  .site-header__cta { display: inline-flex; }
}

/* Hamburger */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  padding: var(--s-2) var(--s-3);
  font-size: var(--t-body-sm);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-strong);
}
@media (min-width: 960px) {
  .nav-toggle { display: none; }
}
.nav-toggle__icon {
  display: inline-flex;
  flex-direction: column;
  gap: 5px;
  width: 1.25rem;
}
.nav-toggle__icon::before,
.nav-toggle__icon::after,
.nav-toggle__icon span {
  content: "";
  display: block;
  height: 1px;
  background: currentColor;
  width: 100%;
}

/* Mobile nav overlay
   visibility: hidden when closed so it's not painted during fullPage screenshots
   or rendered for assistive tech; transitions handle the close timing. */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 100;
  display: flex;
  flex-direction: column;
  padding-block: var(--s-5) var(--s-7);
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: transform var(--dur-3) var(--ease-out),
              opacity var(--dur-3) var(--ease-out),
              visibility 0s linear var(--dur-3);
}
.nav-overlay.is-open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition: transform var(--dur-3) var(--ease-out),
              opacity var(--dur-3) var(--ease-out),
              visibility 0s linear 0s;
}
.nav-overlay__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--hairline);
  padding-bottom: var(--s-4);
}
.nav-overlay__close {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  font-size: var(--t-body-sm);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.nav-overlay__list {
  display: flex;
  flex-direction: column;
  margin-top: var(--s-6);
  gap: var(--s-1);
}
.nav-overlay__link {
  font-family: var(--font-display);
  font-size: clamp(2rem, 8vw, 2.75rem);
  line-height: 1.05;
  letter-spacing: -0.01em;
  padding-block: var(--s-3);
  color: var(--text-strong);
  border-bottom: 1px solid var(--hairline-soft);
}
.nav-overlay__link:last-child { border-bottom: 0; }
.nav-overlay__footer {
  margin-top: auto;
  padding-top: var(--s-5);
  border-top: 1px solid var(--hairline);
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  color: var(--text-quiet);
  font-size: var(--t-body-sm);
}

body.nav-open { overflow: hidden; }

/* ----------------------------------------------------------------
   7. Site footer
   ---------------------------------------------------------------- */

.site-footer {
  background: var(--bg-band);
  border-top: 1px solid var(--hairline);
  margin-top: var(--s-10);
}
.site-footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-7);
  padding-block: var(--s-8) var(--s-7);
}
@media (min-width: 720px) {
  .site-footer__grid {
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: var(--s-7);
  }
}

.site-footer__brand .wordmark__top,
.site-footer__brand .wordmark__bottom { font-size: 0.875rem; }
.site-footer__brand .wordmark { align-items: flex-start; margin-left: 0; padding-left: 0; }
.site-footer__brand .wordmark__rule { margin-left: 0; }

.site-footer__blurb {
  margin-top: var(--s-5);
  font-size: var(--t-body-sm);
  color: var(--text-quiet);
  max-width: 22rem;
  line-height: 1.6;
}

.site-footer__col h3 {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-quiet);
  font-weight: 500;
  margin-bottom: var(--s-4);
}
.site-footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
}
.site-footer__links a {
  font-size: var(--t-body-sm);
  color: var(--text);
}
.site-footer__links a:hover { color: var(--accent); }

.site-footer__bar {
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  padding-block: var(--s-4) var(--s-5);
  border-top: 1px solid var(--hairline);
  font-size: var(--t-meta);
  color: var(--text-quiet);
}
@media (min-width: 720px) {
  .site-footer__bar {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

/* ----------------------------------------------------------------
   8. Cards
   ---------------------------------------------------------------- */

.card {
  display: flex;
  flex-direction: column;
  background: #FFFFFF;
  border: 1px solid var(--hairline-soft);
  border-top-color: rgba(52, 127, 158, 0.28);
  border-radius: 8px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 1px 2px rgba(32, 43, 44, 0.04), 0 4px 16px rgba(32, 43, 44, 0.08);
  transition: box-shadow var(--dur-2) var(--ease-out),
              border-color var(--dur-2) var(--ease-out),
              transform var(--dur-2) var(--ease-out);
}
.card:hover,
.card:focus-visible {
  border-top-color: var(--color-apricot);
  box-shadow: 0 2px 8px rgba(32, 43, 44, 0.07), 0 10px 32px rgba(32, 43, 44, 0.14);
  transform: translateY(-2px);
}

.card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  background: var(--color-sand-2);
  overflow: hidden;
}
.card__media .placeholder-frame { width: 100%; height: 100%; aspect-ratio: auto; border: 0; }
.card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 74%;
  display: block;
  transition: transform var(--dur-3) var(--ease-out);
}
.card:hover .card__media img,
.card:focus-visible .card__media img {
  transform: scale(1.025);
}

.card__body {
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  padding: var(--s-5) var(--s-5) var(--s-6);
  flex: 1;
}
.card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-2);
}
.card__meta-date {
  font-size: var(--t-meta);
  color: var(--text-quiet);
  letter-spacing: 0.02em;
}

.card__title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  line-height: 1.15;
  letter-spacing: -0.01em;
  font-weight: 500;
}
.card__intro {
  color: var(--text-quiet);
  font-size: var(--t-body-sm);
  line-height: 1.6;
}
.card__foot {
  margin-top: auto;
  padding-top: var(--s-4);
}
.card .link-arrow {
  color: var(--color-mineral);
}
.card .badge {
  align-self: flex-start;
  border-color: rgba(52, 127, 158, 0.18);
  background: linear-gradient(135deg, rgba(52, 127, 158, 0.13), rgba(233, 166, 111, 0.2));
  color: var(--color-mineral-deep);
  font-size: 0.58rem;
  letter-spacing: 0.12em;
  padding: 0.18rem 0.46rem;
}

/* Card grid */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-4);
}
@media (min-width: 640px) {
  .card-grid--2 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 960px) {
  .card-grid--3 { grid-template-columns: repeat(3, 1fr); }
  .card-grid--4 { grid-template-columns: repeat(4, 1fr); }
}

/* Summary / spec card (compact) */
.summary-card {
  border: 1px solid var(--hairline);
  padding: var(--s-5);
  background: var(--bg-elevated);
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
}
.summary-card__label {
  font-size: var(--t-eyebrow);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-quiet);
}
.summary-card__value {
  font-family: var(--font-display);
  font-size: 1.5rem;
  line-height: 1.1;
}

.visual-panel {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--hairline);
  border-radius: 14px;
  background:
    radial-gradient(80% 80% at 90% 0%, rgba(52, 127, 158, 0.16), transparent 54%),
    radial-gradient(80% 70% at 0% 100%, rgba(233, 166, 111, 0.18), transparent 58%),
    rgba(255, 255, 255, 0.72);
  box-shadow: 0 12px 36px rgba(32, 43, 44, 0.07);
}
.visual-panel__inner {
  display: grid;
  gap: var(--s-6);
  padding: var(--s-6);
}
@media (min-width: 860px) {
  .visual-panel__inner {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    align-items: center;
    padding: var(--s-7);
  }
}

.metric-list {
  display: grid;
  gap: var(--s-3);
}
.metric-scale {
  display: grid;
  grid-template-columns: minmax(7rem, 12rem) 1fr;
  gap: var(--s-4);
  align-items: center;
  margin-bottom: var(--s-1);
}
.metric-scale__range {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  color: var(--text-quiet);
  font-size: 0.58rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.metric-scale__range span:nth-child(2) { text-align: center; }
.metric-scale__range span:nth-child(3) { text-align: right; }
.metric-note {
  margin-top: var(--s-2);
  color: var(--text-quiet);
  font-size: var(--t-meta);
  line-height: 1.5;
}
.metric-row {
  display: grid;
  grid-template-columns: minmax(7rem, 12rem) 1fr;
  gap: var(--s-4);
  align-items: center;
}
.metric-row__label {
  color: var(--text-quiet);
  font-size: var(--t-eyebrow);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.metric-row__track {
  height: 0.68rem;
  overflow: hidden;
  border-radius: var(--radius-pill);
  background:
    linear-gradient(90deg, transparent calc(33.333% - 1px), rgba(32, 43, 44, 0.18) calc(33.333% - 1px), rgba(32, 43, 44, 0.18) 33.333%, transparent 33.333%, transparent calc(66.666% - 1px), rgba(32, 43, 44, 0.18) calc(66.666% - 1px), rgba(32, 43, 44, 0.18) 66.666%, transparent 66.666%),
    rgba(32, 43, 44, 0.08);
}
.metric-row__fill {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--color-mineral), var(--color-teal) 62%, var(--color-apricot));
  box-shadow: 0 4px 16px rgba(52, 127, 158, 0.22);
}
@media (max-width: 640px) {
  .metric-scale,
  .metric-row {
    grid-template-columns: 1fr;
    gap: var(--s-2);
  }
}

.advice-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-3);
}
@media (min-width: 760px) {
  .advice-grid { grid-template-columns: repeat(3, 1fr); }
}
.advice-card {
  border: 1px solid var(--hairline);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.78);
  padding: var(--s-5);
}
.advice-card__icon {
  width: 2.25rem;
  height: 2.25rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  margin-bottom: var(--s-4);
  color: #fff;
  background: linear-gradient(135deg, var(--color-mineral), var(--color-teal));
  font-family: var(--font-display);
  font-size: 1.2rem;
  line-height: 1;
}
.advice-card__title {
  font-family: var(--font-display);
  color: var(--text-strong);
  font-size: 1.25rem;
  line-height: 1.2;
  margin-bottom: var(--s-2);
}
.advice-card__body {
  color: var(--text-quiet);
  font-size: var(--t-body-sm);
  line-height: 1.6;
}

.region-map {
  min-height: 19rem;
  border: 1px solid var(--hairline);
  border-radius: 16px;
  background:
    radial-gradient(12rem 8rem at 70% 32%, rgba(52, 127, 158, 0.2), transparent 64%),
    radial-gradient(10rem 8rem at 42% 64%, rgba(47, 140, 131, 0.22), transparent 64%),
    radial-gradient(9rem 7rem at 24% 30%, rgba(233, 166, 111, 0.24), transparent 64%),
    linear-gradient(135deg, rgba(255,255,255,0.9), rgba(239,226,207,0.76));
  position: relative;
  overflow: hidden;
}
.region-map::before {
  content: "";
  position: absolute;
  inset: 14%;
  border: 1px solid rgba(32, 43, 44, 0.12);
  border-radius: 48% 42% 55% 38%;
  transform: rotate(-11deg);
}
.region-pin {
  position: absolute;
  display: grid;
  gap: 0.2rem;
  color: var(--text-strong);
}
.region-pin::before {
  content: "";
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  background: var(--color-mineral);
  box-shadow: 0 0 0 0.45rem rgba(52, 127, 158, 0.16);
}
.region-pin span {
  font-size: var(--t-eyebrow);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  white-space: nowrap;
}
.region-pin--newcastle { left: 60%; top: 24%; }
.region-pin--lake { left: 42%; top: 56%; }
.region-pin--hunter { left: 22%; top: 34%; }

/* ----------------------------------------------------------------
   9. Placeholder image frame
   ---------------------------------------------------------------- */

.placeholder-frame {
  position: relative;
  aspect-ratio: 4 / 3;
  background:
    radial-gradient(80% 60% at 74% 16%, rgba(233, 166, 111, 0.28) 0%, rgba(233, 166, 111, 0) 62%),
    radial-gradient(70% 70% at 10% 82%, rgba(167, 185, 155, 0.32) 0%, rgba(167, 185, 155, 0) 66%),
    radial-gradient(120% 80% at 50% 20%, rgba(255,255,255,0.48) 0%, rgba(255,255,255,0) 60%),
    linear-gradient(180deg, var(--color-sand-2) 0%, var(--color-sand) 100%);
  border: 1px solid var(--hairline);
  overflow: hidden;
  isolation: isolate;
}
.placeholder-frame::before {
  content: "";
  position: absolute;
  inset: 18% 14% 22%;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.32), rgba(255,255,255,0) 40%),
    linear-gradient(180deg, rgba(52, 127, 158, 0.82), rgba(47, 140, 131, 0.74));
  border: 1px solid rgba(255,255,255,0.5);
  border-radius: 999px;
  box-shadow: 0 12px 36px rgba(52, 127, 158, 0.18);
  opacity: 0.62;
}
.placeholder-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(32,43,44,0.06) 0 1px, transparent 1px 88px),
    repeating-linear-gradient(0deg, rgba(32,43,44,0.05) 0 1px, transparent 1px 88px);
  mix-blend-mode: multiply;
  pointer-events: none;
}
.placeholder-frame__label {
  position: absolute;
  left: var(--s-4);
  bottom: var(--s-4);
  font-size: var(--t-eyebrow);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-quiet);
  background: rgba(248, 243, 234, 0.86);
  padding: 0.35rem 0.55rem;
  border: 1px solid var(--hairline);
  backdrop-filter: blur(2px);
  z-index: 2;
}

.placeholder-frame--wide { aspect-ratio: 16 / 9; }
.placeholder-frame--tall { aspect-ratio: 3 / 4; }
.placeholder-frame--square { aspect-ratio: 1; }

/* ----------------------------------------------------------------
   10. Tables (editorial)
   ---------------------------------------------------------------- */

.editorial-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--t-body-sm);
}
.editorial-table th,
.editorial-table td {
  text-align: left;
  padding: var(--s-4) var(--s-4);
  border-bottom: 1px solid var(--hairline);
  vertical-align: top;
}
.editorial-table th {
  font-family: var(--font-sans);
  font-size: var(--t-eyebrow);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-quiet);
  font-weight: 500;
  border-bottom: 1px solid var(--hairline-strong);
  background: transparent;
}
.editorial-table tbody tr:hover { background: rgba(32,43,44,0.025); }
.editorial-table .row-label {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  color: var(--text-strong);
  font-weight: 420;
}
.editorial-table .cell-quiet { color: var(--text-quiet); }

.editorial-table--scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* ----------------------------------------------------------------
   11. Callout / editorial note
   ---------------------------------------------------------------- */

.callout {
  border-left: 2px solid var(--accent);
  padding: var(--s-4) var(--s-5);
  background: rgba(52, 127, 158, 0.07);
}
.callout__label {
  font-size: var(--t-eyebrow);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: var(--s-2);
}
.callout p {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  line-height: 1.55;
  color: var(--text);
}

/* Pull quote */
.pull-quote {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.5vw + 0.5rem, 2.25rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  font-weight: 380;
  color: var(--text-strong);
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  padding-block: var(--s-6);
  margin-block: var(--s-6);
}

/* ----------------------------------------------------------------
   12. Breadcrumbs
   ---------------------------------------------------------------- */

.breadcrumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--s-2);
  font-size: var(--t-meta);
  letter-spacing: 0.04em;
  color: var(--text-quiet);
}
.breadcrumbs a { color: var(--text); }
.breadcrumbs li + li::before {
  content: "/";
  margin-right: var(--s-2);
  color: var(--hairline-strong);
}
.breadcrumbs li[aria-current="page"] { color: var(--text-quiet); }

/* ----------------------------------------------------------------
   13. FAQ
   ---------------------------------------------------------------- */

.faq {
  border-top: 1px solid var(--hairline);
}
.faq__item {
  border-bottom: 1px solid var(--hairline);
}
.faq__item > summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--s-4);
  padding-block: var(--s-5);
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 1.25rem;
  line-height: 1.3;
  color: var(--text-strong);
}
.faq__item > summary::-webkit-details-marker { display: none; }
.faq__item > summary::after {
  content: "+";
  font-family: var(--font-sans);
  font-size: 1.25rem;
  color: var(--text-quiet);
  transition: transform var(--dur-2) var(--ease-out),
              color var(--dur-2) var(--ease-out);
  flex-shrink: 0;
}
.faq__item[open] > summary::after { transform: rotate(45deg); color: var(--text-strong); }
.faq__answer {
  padding-bottom: var(--s-5);
  color: var(--text-quiet);
  max-width: 38rem;
  font-size: var(--t-body);
  line-height: 1.65;
}

/* ----------------------------------------------------------------
   14. Hero (base)
   ---------------------------------------------------------------- */

.hero {
  padding-block: var(--s-8) var(--s-9);
}
@media (min-width: 768px) {
  .hero { padding-block: var(--s-9) var(--s-10); }
}
.hero__head {
  display: flex;
  flex-direction: column;
  gap: var(--s-5);
  max-width: 52rem;
}
.hero__intro {
  color: var(--text-quiet);
  font-family: var(--font-display);
  font-size: 1.25rem;
  line-height: 1.5;
  max-width: 32rem;
  font-weight: 380;
}
@media (min-width: 768px) {
  .hero__intro { font-size: 1.4rem; }
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-4);
  align-items: center;
  margin-top: var(--s-2);
}

/* Homepage hero */
.home-hero {
  padding-block: var(--s-6) var(--s-8);
  background:
    linear-gradient(180deg, rgba(239, 226, 207, 0.64), rgba(248, 243, 234, 0) 58%),
    var(--bg);
}
@media (min-width: 768px) {
  .home-hero {
    padding-block: var(--s-8) var(--s-9);
  }
}

.home-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-6);
  align-items: center;
}
@media (min-width: 980px) {
  .home-hero__grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    gap: clamp(3rem, 6vw, 6.5rem);
  }
}

.home-hero .hero__head {
  max-width: 42rem;
}
.home-hero .display-xl {
  max-width: 10ch;
}
.home-hero .hero__intro {
  max-width: 34rem;
}

.home-hero__visual {
  position: relative;
  min-width: 0;
}

.home-hero__image-frame {
  position: relative;
  margin: 0;
  aspect-ratio: 16 / 11;
  overflow: hidden;
  border: 1px solid rgba(32, 43, 44, 0.16);
  border-radius: 14px;
  background: var(--bg-elevated);
  box-shadow: 0 18px 52px rgba(32, 43, 44, 0.12);
}
.home-hero__image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 52% 50%;
}
.home-hero__image-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.12), rgba(32,43,44,0.08)),
    linear-gradient(90deg, rgba(248,243,234,0.1), rgba(248,243,234,0));
  pointer-events: none;
}
.home-hero__image-frame figcaption {
  position: absolute;
  left: var(--s-4);
  bottom: var(--s-4);
  z-index: 1;
  padding: 0.45rem 0.65rem;
  border: 1px solid rgba(32, 43, 44, 0.13);
  background: rgba(248, 243, 234, 0.9);
  color: var(--text-quiet);
  font-family: var(--font-sans);
  font-size: var(--t-eyebrow);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.home-hero__decision-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: var(--s-3);
  border: 1px solid rgba(32, 43, 44, 0.16);
  background: rgba(32, 43, 44, 0.12);
}
.home-hero__decision-strip div {
  min-width: 0;
  padding: var(--s-4);
  background: rgba(255, 255, 255, 0.78);
}
.home-hero__decision-strip span,
.home-hero__decision-strip strong {
  display: block;
}
.home-hero__decision-strip span {
  color: var(--text-quiet);
  font-size: var(--t-eyebrow);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.home-hero__decision-strip strong {
  margin-top: 0.2rem;
  color: var(--text-strong);
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 1.2vw, 1.35rem);
  font-weight: 600;
  line-height: 1.1;
}

@media (max-width: 640px) {
  .home-hero .display-xl {
    max-width: 11ch;
  }
  .home-hero__image-frame {
    aspect-ratio: 4 / 3;
    border-radius: 10px;
  }
  .home-hero__decision-strip {
    grid-template-columns: 1fr;
  }
}

/* Hero with side image */
.hero--split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-7);
  align-items: end;
}
@media (min-width: 960px) {
  .hero--split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: var(--s-8);
  }
}

/* ----------------------------------------------------------------
   15. Misc — dividers, badges, tag chips
   ---------------------------------------------------------------- */

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

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-pill);
  font-size: 0.625rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-mineral-deep);
  background: rgba(52, 127, 158, 0.09);
}

.tag {
  display: inline-flex;
  font-size: var(--t-meta);
  color: var(--text-quiet);
  letter-spacing: 0.02em;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
}

.kicker-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
  flex-wrap: wrap;
}

/* Two-column editorial pair */
.editorial-pair {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-5);
}
@media (min-width: 880px) {
  .editorial-pair {
    grid-template-columns: minmax(12rem, 16rem) minmax(0, 1fr);
    gap: var(--s-7);
    align-items: start;
  }
}

/* Page meta strip (used under page headers) */
.page-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-5);
  padding-block: var(--s-4);
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  font-size: var(--t-meta);
  color: var(--text-quiet);
  letter-spacing: 0.02em;
}
.page-meta dt {
  font-size: var(--t-eyebrow);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-quiet);
  margin-right: var(--s-2);
  display: inline;
}
.page-meta dd { display: inline; margin: 0; color: var(--text); }
.page-meta__item { display: inline-flex; gap: var(--s-2); align-items: baseline; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 1ms !important;
    animation-duration: 1ms !important;
  }
}

/* ----------------------------------------------------------------
   Concrete page — data-viz (build timeline, cost breakdown,
   lifespan comparison, decision flow). Native, responsive and
   accessible replacements for the infographic placeholders.
   ---------------------------------------------------------------- */

.build-timeline,
.cost-bar,
.lifespan,
.decision-flow {
  margin: 0;
  padding: var(--s-6);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.78);
}
@media (min-width: 768px) {
  .build-timeline,
  .cost-bar,
  .lifespan,
  .decision-flow {
    padding: var(--s-7);
  }
}

.build-timeline__head,
.cost-bar__head,
.lifespan__head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--s-2);
  margin-bottom: var(--s-6);
}
.build-timeline__title,
.cost-bar__title,
.lifespan__title {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  color: var(--text-strong);
  letter-spacing: -0.005em;
}
.build-timeline__axis-label,
.cost-bar__hint,
.lifespan__axis-label {
  font-family: var(--font-sans);
  font-size: 0.58rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-quiet);
}
.build-timeline__caption,
.cost-bar__caption {
  margin-top: var(--s-4);
  color: var(--text-quiet);
  font-size: var(--t-meta);
  line-height: 1.5;
}

/* Build timeline */
.build-timeline__grid {
  display: grid;
  grid-template-columns: minmax(8rem, 12rem) 1fr;
  gap: var(--s-5) var(--s-5);
  align-items: center;
}
.build-timeline__label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-family: var(--font-sans);
  font-size: var(--t-body-sm);
  color: var(--text);
  line-height: 1.25;
}
.build-timeline__label em {
  font-style: normal;
  font-size: 0.56rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-quiet);
}
.build-timeline__track {
  position: relative;
  height: 0.9rem;
  border-radius: var(--radius-pill);
  background:
    repeating-linear-gradient(90deg, transparent, transparent calc(20% - 1px), var(--hairline) calc(20% - 1px), var(--hairline) 20%),
    rgba(32, 43, 44, 0.05);
}
.build-timeline__bar {
  position: absolute;
  top: 0;
  height: 100%;
  min-width: 0.9rem;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-mineral), var(--color-teal));
  box-shadow: 0 3px 12px rgba(52, 127, 158, 0.2);
}
.build-timeline__axis {
  display: flex;
  justify-content: space-between;
  font-size: 0.58rem;
  letter-spacing: 0.08em;
  color: var(--text-quiet);
  margin-top: 2px;
}
@media (max-width: 640px) {
  .build-timeline__grid { grid-template-columns: 1fr; gap: var(--s-2); }
  .build-timeline__label { flex-direction: row; align-items: baseline; gap: var(--s-2); margin-top: var(--s-3); }
  .build-timeline__axis-spacer { display: none; }
}

/* Cost breakdown */
.cost-bar__track {
  display: flex;
  height: 1.15rem;
  border-radius: var(--radius-pill);
  overflow: hidden;
  border: 1px solid var(--hairline);
}
.cost-bar__seg { display: block; min-width: 3px; }
.cost-bar__seg + .cost-bar__seg { border-left: 1px solid rgba(255, 255, 255, 0.55); }
.cost-bar__seg--a, .cost-bar__swatch--a { background: var(--color-mineral); }
.cost-bar__seg--b, .cost-bar__swatch--b { background: var(--color-teal); }
.cost-bar__seg--c, .cost-bar__swatch--c { background: var(--color-eucalyptus); }
.cost-bar__seg--d, .cost-bar__swatch--d { background: var(--color-sand); }
.cost-bar__seg--e, .cost-bar__swatch--e { background: var(--color-slate); }
.cost-bar__seg--f, .cost-bar__swatch--f { background: var(--color-apricot); }
.cost-bar__legend {
  list-style: none;
  margin: var(--s-5) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}
@media (min-width: 620px) {
  .cost-bar__legend { grid-template-columns: 1fr 1fr; column-gap: var(--s-6); }
}
.cost-bar__legend-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--s-3);
  padding-block: var(--s-2);
  border-top: 1px solid var(--hairline-soft);
  font-size: var(--t-body-sm);
}
.cost-bar__swatch { width: 0.85rem; height: 0.85rem; border-radius: var(--radius-2); }
.cost-bar__legend-label { color: var(--text); }
.cost-bar__legend-value { color: var(--text-quiet); font-variant-numeric: tabular-nums; white-space: nowrap; }

/* Lifespan */
.lifespan__row {
  display: grid;
  grid-template-columns: minmax(6rem, 8rem) 1fr;
  gap: var(--s-2) var(--s-4);
  align-items: center;
}
.lifespan__row + .lifespan__row { margin-top: var(--s-5); }
.lifespan__label { font-family: var(--font-display); font-size: 1.0625rem; color: var(--text-strong); }
.lifespan__track {
  position: relative;
  display: block;
  height: 0.95rem;
  border-radius: var(--radius-pill);
  background: rgba(32, 43, 44, 0.06);
}
.lifespan__bar {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  height: 100%;
  border-radius: var(--radius-pill);
  padding-right: var(--s-3);
  box-shadow: 0 3px 12px rgba(52, 127, 158, 0.16);
}
.lifespan__bar--concrete { background: linear-gradient(90deg, var(--color-mineral), var(--color-mineral-deep)); }
.lifespan__bar--fibreglass { background: linear-gradient(90deg, var(--color-eucalyptus), var(--color-teal)); }
.lifespan__value {
  font-family: var(--font-sans);
  font-size: 0.56rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: #fff;
  white-space: nowrap;
}
.lifespan__mark {
  position: absolute;
  top: -3px;
  width: 1px;
  height: calc(100% + 6px);
  background: var(--hairline-strong);
}
.lifespan__note { grid-column: 2; font-size: var(--t-meta); color: var(--text-quiet); }
.lifespan__row--axis { margin-top: var(--s-3); }
.lifespan__axis { display: flex; justify-content: space-between; font-size: 0.58rem; color: var(--text-quiet); }
@media (max-width: 640px) {
  .lifespan__row { grid-template-columns: 1fr; gap: var(--s-2); }
  .lifespan__note { grid-column: 1; }
  .lifespan__row--axis span:first-child { display: none; }
}

/* Decision flow */
.decision-flow__steps { list-style: none; margin: 0 0 var(--s-6); padding: 0; }
.decision-flow__step {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--s-4);
  padding-bottom: var(--s-5);
}
.decision-flow__step:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 0.9rem;
  top: 1.9rem;
  bottom: -0.2rem;
  width: 1px;
  background: var(--hairline-strong);
}
.decision-flow__node {
  position: relative;
  z-index: 1;
  width: 1.8rem;
  height: 1.8rem;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: var(--bg-elevated);
  border: 1px solid var(--hairline-strong);
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--accent);
}
.decision-flow__q {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  line-height: 1.35;
  color: var(--text-strong);
  margin-bottom: var(--s-3);
}
.decision-flow__branches { display: grid; gap: var(--s-2); }
@media (min-width: 620px) {
  .decision-flow__branches { grid-template-columns: 1fr 1fr; gap: var(--s-3); }
}
.decision-flow__branch {
  font-size: var(--t-body-sm);
  line-height: 1.4;
  padding: var(--s-2) var(--s-3);
  border-radius: var(--radius-2);
  border-left: 2px solid;
  color: var(--text);
}
.decision-flow__branch--concrete { border-color: var(--color-mineral); background: rgba(52, 127, 158, 0.07); }
.decision-flow__branch--fibreglass { border-color: var(--color-eucalyptus); background: rgba(167, 185, 155, 0.16); }
.decision-flow__outcomes {
  display: grid;
  gap: var(--s-3);
  padding-top: var(--s-5);
  border-top: 1px solid var(--hairline);
}
@media (min-width: 620px) {
  .decision-flow__outcomes { grid-template-columns: repeat(3, 1fr); }
}
.decision-flow__outcome {
  padding: var(--s-4);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
}
.decision-flow__outcome span {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.58rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-quiet);
  margin-bottom: var(--s-2);
}
.decision-flow__outcome p { font-family: var(--font-display); font-size: 1rem; line-height: 1.3; color: var(--text-strong); }
.decision-flow__outcome--concrete { border-top: 2px solid var(--color-mineral); }
.decision-flow__outcome--fibreglass { border-top: 2px solid var(--color-eucalyptus); }
.decision-flow__outcome--compare { border-top: 2px solid var(--color-apricot); }

/* Band (coloured) sections inside the TOC column are full-width mood panels.
   The toc-layout zeroes container padding for grid alignment, which leaves
   band content flush against the coloured edge — restore a horizontal inset
   so text sits comfortably within the panel (matches band sections elsewhere). */
.toc-layout__content > .section--band > .container {
  padding-inline: var(--s-5);
}
@media (min-width: 768px) {
  .toc-layout__content > .section--band > .container {
    padding-inline: var(--s-7);
  }
}