/* ==========================================================================
   WPC Green Floor
   Tokens -> base -> layout -> components -> pages. One accent (moss).
   Radius system: 6px for interactive + boxes, 3px for material swatches, 999px for chips.
   ========================================================================== */

@font-face { font-family: "Bricolage Grotesque"; src: url("/assets/fonts/bricolage-grotesque-latin-600-normal.woff2") format("woff2"); font-weight: 600; font-display: swap; }
@font-face { font-family: "Bricolage Grotesque"; src: url("/assets/fonts/bricolage-grotesque-latin-700-normal.woff2") format("woff2"); font-weight: 700; font-display: swap; }
@font-face { font-family: "Figtree"; src: url("/assets/fonts/figtree-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Figtree"; src: url("/assets/fonts/figtree-latin-400-italic.woff2") format("woff2"); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: "Figtree"; src: url("/assets/fonts/figtree-latin-500-normal.woff2") format("woff2"); font-weight: 500; font-display: swap; }
@font-face { font-family: "Figtree"; src: url("/assets/fonts/figtree-latin-600-normal.woff2") format("woff2"); font-weight: 600; font-display: swap; }

:root {
  --paper: #f1f3ee;
  --surface: #fafbf8;
  --tint: #e6eae2;
  --ink: #18211c;
  --muted: #4f5b54;
  --line: #d3d8d0;
  --moss: #2e5e45;
  --moss-ink: #ffffff;
  --moss-hover: #244b37;
  --moss-soft: #dce8df;
  --warn: #7a5a12;
  --warn-soft: #f3ead2;
  --error: #a32a1f;

  --font-display: "Bricolage Grotesque", "Avenir Next", "Segoe UI", system-ui, sans-serif;
  --font-body: "Figtree", "Avenir Next", "Segoe UI", system-ui, sans-serif;

  --step--1: 0.875rem;
  --step-0: 1.0625rem;
  --step-1: 1.25rem;
  --step-2: 1.5625rem;
  --step-3: clamp(1.75rem, 1.4rem + 1.4vw, 2.25rem);
  --step-4: clamp(2.1rem, 1.5rem + 2.6vw, 3.25rem);

  --r: 6px;
  --r-swatch: 3px;
  --wrap: 1240px;
  --gutter: clamp(1rem, 3vw, 2rem);
  --space: clamp(3rem, 6vw, 5.5rem);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #121714;
    --surface: #1a211d;
    --tint: #19201b;
    --ink: #e4e9e3;
    --muted: #a6b1aa;
    --line: #2d3731;
    --moss: #86c29f;
    --moss-ink: #0f1a13;
    --moss-hover: #a1d3b5;
    --moss-soft: #1f3328;
    --warn: #e2c27a;
    --warn-soft: #2d2718;
    --error: #ff8a7d;
    color-scheme: dark;
  }
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 var(--step-0)/1.6 var(--font-body);
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
img { height: auto; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 700; line-height: 1.12; letter-spacing: -0.015em; margin: 0 0 0.5em; text-wrap: balance; }
h1 { font-size: var(--step-4); }
h2 { font-size: var(--step-3); }
h3 { font-size: var(--step-1); font-weight: 600; letter-spacing: -0.005em; }
p { margin: 0 0 1em; }
a { color: var(--moss); text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--moss); outline-offset: 2px; border-radius: 2px; }
.icon { width: 1.15em; height: 1.15em; fill: currentColor; flex: none; }

.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }
.skip-link { position: absolute; left: 1rem; top: -4rem; z-index: 100; background: var(--moss); color: var(--moss-ink); padding: 0.6rem 1rem; border-radius: var(--r); }
.skip-link:focus { top: 1rem; }
.lede { font-size: var(--step-1); color: var(--muted); max-width: 60ch; line-height: 1.5; }
.fine { font-size: var(--step--1); color: var(--muted); }
.measure { max-width: 65ch; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  min-height: 44px; padding: 0.6rem 1.15rem; border-radius: var(--r);
  font: 600 var(--step-0)/1.2 var(--font-body); text-decoration: none; white-space: nowrap;
  border: 1.5px solid transparent; cursor: pointer; transition: background-color .15s, border-color .15s, transform .1s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--moss); color: var(--moss-ink); }
.btn-primary:hover { background: var(--moss-hover); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--paper); }
.btn-lg { min-height: 52px; padding-inline: 1.5rem; }
.btn-block { width: 100%; }

/* ---------- Header ---------- */
.site-header { background: var(--surface); border-bottom: 1px solid var(--line); position: relative; z-index: 20; }
.bar { display: flex; align-items: center; gap: 1.5rem; min-height: 68px; }
.logo { display: inline-flex; align-items: center; gap: 0.6rem; color: var(--ink); text-decoration: none; font: 700 1.2rem/1 var(--font-display); letter-spacing: -0.02em; }
.logo-mark { width: 30px; height: 30px; fill: var(--moss); }
.primary-nav { display: flex; align-items: center; gap: 1.5rem; margin-left: auto; }
.primary-nav ul { display: flex; gap: 1.4rem; list-style: none; margin: 0; padding: 0; }
.primary-nav a:not(.btn) { color: var(--ink); text-decoration: none; font-weight: 500; }
.primary-nav a:not(.btn):hover, .primary-nav a[aria-current] { color: var(--moss); text-decoration: underline; }
.nav-actions { display: flex; align-items: center; gap: 1rem; }
.phone { display: inline-flex; align-items: center; gap: 0.35rem; }
.menu-toggle { display: none; margin-left: auto; align-items: center; gap: 0.4rem; background: none; border: 1.5px solid var(--line); color: var(--ink); border-radius: var(--r); min-height: 44px; padding: 0 0.9rem; font: 600 var(--step--1) var(--font-body); }

.cat-bar { border-top: 1px solid var(--line); }
.cat-bar > ul { display: flex; list-style: none; margin: 0 auto; gap: 0.25rem; }
.cat-item { position: relative; }
.cat-item > a { display: inline-flex; align-items: center; gap: 0.25rem; padding: 0.7rem 0.6rem; color: var(--muted); text-decoration: none; font-size: 0.95rem; font-weight: 500; white-space: nowrap; }
.cat-item > a:hover, .cat-item > a[aria-current] { color: var(--ink); box-shadow: inset 0 -2px 0 var(--moss); }
.icon-caret { width: 0.8em; height: 0.8em; }
.cat-panel { position: absolute; top: 100%; left: 0; min-width: 260px; background: var(--surface); border: 1px solid var(--line); border-radius: 0 0 var(--r) var(--r); padding: 0.5rem 0; box-shadow: 0 12px 28px rgb(24 33 28 / 0.12); display: none; }
.cat-panel ul { list-style: none; margin: 0; padding: 0; }
.cat-panel a { display: block; padding: 0.5rem 1rem; color: var(--ink); text-decoration: none; font-size: 0.95rem; }
.cat-panel a:hover { background: var(--moss-soft); }
.cat-panel-all a { color: var(--moss); font-weight: 600; border-top: 1px solid var(--line); margin-top: 0.25rem; }
@media (hover: hover) and (min-width: 1025px) {
  .has-panel:hover .cat-panel, .has-panel:focus-within .cat-panel { display: block; }
}

@media (max-width: 1024px) {
  .menu-toggle { display: inline-flex; }
  .primary-nav { display: none; position: absolute; top: 68px; left: 0; right: 0; background: var(--surface); border-bottom: 1px solid var(--line); flex-direction: column; align-items: stretch; padding: 1rem var(--gutter) 1.5rem; gap: 1rem; }
  .primary-nav.is-open { display: flex; }
  .primary-nav ul { flex-direction: column; gap: 0; }
  .primary-nav ul a { display: block; padding: 0.75rem 0; border-bottom: 1px solid var(--line); }
  .nav-actions { flex-direction: column; align-items: stretch; }
  .cat-bar > ul { overflow-x: auto; scrollbar-width: none; -webkit-overflow-scrolling: touch; }
  .cat-bar > ul::-webkit-scrollbar { display: none; }
  .cat-bar { -webkit-mask-image: linear-gradient(90deg, #000 88%, transparent); mask-image: linear-gradient(90deg, #000 88%, transparent); }
  .icon-caret { display: none; }
}

/* ---------- Breadcrumbs ---------- */
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: 0.35rem; list-style: none; margin: 0; padding: 1rem 0 0; font-size: var(--step--1); color: var(--muted); }
.breadcrumbs li + li::before { content: "/"; margin-right: 0.35rem; opacity: 0.6; }
.breadcrumbs a { color: var(--muted); }

/* ---------- Swatches ---------- */
.swatch { border-radius: var(--r-swatch); background: var(--tint); object-fit: cover; width: 100%; }

/* ---------- Home hero + sample board (the signature element) ---------- */
.hero { display: grid; grid-template-columns: 1.2fr 1fr; gap: clamp(2rem, 5vw, 4.5rem); align-items: center; padding-block: clamp(2.5rem, 5vw, 4.5rem); }
.hero h1 { font-size: clamp(2.1rem, 1.5rem + 2vw, 3rem); max-width: 22ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.5rem; }
.sample-board { display: grid; grid-template-columns: 1.3fr 0.55fr 0.55fr; grid-template-rows: 1fr 0.85fr; gap: 10px; aspect-ratio: 5 / 4; }
.sample-board .swatch { height: 100%; min-height: 0; box-shadow: 0 1px 0 rgb(0 0 0 / 0.06), 0 10px 24px rgb(24 33 28 / 0.12); }
.sb-a { grid-column: 1; grid-row: 1 / 3; }
.sb-b { grid-column: 2 / 4; grid-row: 1; }
.sb-c { grid-column: 2; grid-row: 2; }
.sb-d { grid-column: 3; grid-row: 2; }
@media (prefers-reduced-motion: no-preference) {
  .sample-board .swatch { animation: lay 0.6s cubic-bezier(.2,.7,.2,1) both; }
  .sb-b { animation-delay: 0.08s; } .sb-c { animation-delay: 0.16s; } .sb-d { animation-delay: 0.24s; }
  @keyframes lay { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
}
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; }
  .sample-board { aspect-ratio: 16 / 10; order: -1; }
}

/* ---------- Sections ---------- */
.section { padding-block: var(--space); }
.section-tight { padding-block: clamp(2rem, 4vw, 3rem); }
.section-tint { background: var(--tint); }

/* Category tiles: two large + six small */
.cat-grid { list-style: none; margin: 1.5rem 0 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.cat-tile a { display: block; position: relative; text-decoration: none; color: var(--ink); }
.cat-tile .swatch { aspect-ratio: 4 / 3; height: auto; }
.cat-tile-big { grid-column: span 2; }
.cat-tile-big .swatch { aspect-ratio: 16 / 9; }
.cat-tile:nth-last-child(-n+2):not(.cat-tile-big) { grid-column: span 2; }
.cat-tile:nth-last-child(-n+2):not(.cat-tile-big) .swatch { aspect-ratio: 16 / 6; }
.cat-tile-label { display: block; margin-top: 0.55rem; font: 600 var(--step-1)/1.2 var(--font-display); }
.cat-tile a:hover .cat-tile-label { color: var(--moss); text-decoration: underline; }
@media (max-width: 760px) { .cat-grid { grid-template-columns: 1fr 1fr; } .cat-tile-big .swatch, .cat-tile:nth-last-child(-n+2):not(.cat-tile-big) .swatch { aspect-ratio: 16 / 8; } }

.split { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(2rem, 5vw, 4rem); align-items: start; }
.split > div p { max-width: 55ch; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }

/* Steps: genuine sequences only */
.steps { list-style: none; counter-reset: step; margin: 0; padding: 0; display: grid; gap: 1.25rem; }
.steps li { counter-increment: step; display: grid; grid-template-columns: 2.25rem 1fr; column-gap: 0.9rem; }
.steps li::before { content: counter(step); grid-row: 1 / 3; width: 2.25rem; height: 2.25rem; border-radius: 50%; border: 1.5px solid var(--moss); color: var(--moss); display: grid; place-items: center; font: 700 1rem/1 var(--font-display); }
.steps h3 { margin: 0.25rem 0 0.2rem; font-size: var(--step-0); font-weight: 600; font-family: var(--font-body); letter-spacing: 0; }
.steps p { margin: 0; color: var(--muted); }
.steps-row { grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 1.5rem 2rem; margin-top: 1.25rem; }

.facts-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 1.75rem 2.5rem; margin: 2rem 0 0; }
.facts-grid > div { grid-column: span 2; }
.facts-grid > div:nth-child(n+4) { grid-column: span 3; }
@media (max-width: 860px) { .facts-grid { grid-template-columns: 1fr 1fr; } .facts-grid > div, .facts-grid > div:nth-child(n+4) { grid-column: auto; } .facts-grid > div:last-child { grid-column: 1 / -1; } }
@media (max-width: 520px) { .facts-grid { grid-template-columns: 1fr; } }
.facts-grid dt { display: flex; align-items: center; gap: 0.5rem; font-weight: 600; margin-bottom: 0.3rem; }
.facts-grid dt .icon { color: var(--moss); width: 1.4em; height: 1.4em; }
.facts-grid dd { margin: 0; color: var(--muted); max-width: 48ch; }

.area-rows { list-style: none; margin: 1.5rem 0 0; padding: 0; border-top: 1px solid var(--line); }
.area-rows li { display: grid; grid-template-columns: minmax(180px, 1fr) 2.5fr; gap: 1rem 2rem; padding: 1.25rem 0; border-bottom: 1px solid var(--line); align-items: baseline; }
.area-rows h3 { margin: 0; font-size: var(--step-2); }
.area-rows p { margin: 0; color: var(--muted); }
@media (max-width: 640px) { .area-rows li { grid-template-columns: 1fr; } }

.link-list { list-style: none; margin: 1.25rem 0 0; padding: 0; display: grid; gap: 1.25rem; max-width: 75ch; }
.link-list a { font: 600 var(--step-1)/1.3 var(--font-display); }
.link-list p { margin: 0.25rem 0 0; color: var(--muted); }

.cta-band { background: var(--moss); color: var(--moss-ink); padding-block: clamp(2.5rem, 5vw, 4rem); }
.cta-inner { display: grid; grid-template-columns: 1fr auto; gap: 1rem 3rem; align-items: center; }
.cta-inner h2 { margin: 0; grid-column: 1; }
.cta-inner p { margin: 0; grid-column: 1; max-width: 60ch; opacity: 0.92; }
.cta-actions { grid-column: 2; grid-row: 1 / 3; display: flex; gap: 0.75rem; flex-wrap: wrap; }
.cta-band .btn-primary { background: var(--moss-ink); color: var(--moss); }
.cta-band .btn-primary:hover { background: var(--paper); }
.cta-band .btn-ghost { color: var(--moss-ink); border-color: var(--moss-ink); }
.cta-band .btn-ghost:hover { background: var(--moss-ink); color: var(--moss); }
@media (max-width: 760px) { .cta-inner { grid-template-columns: 1fr; } .cta-actions { grid-column: 1; grid-row: auto; } }

/* ---------- Inner pages ---------- */
.page-head { padding-block: clamp(1.5rem, 3vw, 2.5rem) clamp(1.5rem, 3vw, 2.25rem); }
.page-head-flush { padding-inline: 0; }
.page-head-split { display: grid; grid-template-columns: 1.4fr 1fr; gap: 2.5rem; align-items: center; }
.swatch-head { aspect-ratio: 16 / 10; height: auto; }
@media (max-width: 760px) { .page-head-split { grid-template-columns: 1fr; } .swatch-head { order: -1; aspect-ratio: 16 / 7; } }

.content-grid { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: clamp(2rem, 5vw, 4.5rem); padding-block: clamp(2rem, 4vw, 3.5rem); align-items: start; }
@media (max-width: 900px) { .content-grid { grid-template-columns: 1fr; } }

.prose { max-width: 70ch; }
.prose h2 { font-size: var(--step-2); margin-top: 2em; }
.prose > h2:first-child, .prose > .table-wrap + h2 { margin-top: 0.5em; }
.prose ul { padding-left: 1.2rem; }
.prose li { margin-bottom: 0.4em; }
.prose-solo { padding-bottom: var(--space); }

.side { display: grid; gap: 1.25rem; position: sticky; top: 1.5rem; }
.side-box { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 1.25rem; }
.side-box h2 { font-size: var(--step-1); margin-bottom: 0.6rem; }
.side-box ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.45rem; }
.side-box p:last-child { margin-bottom: 0; }
.mini-steps { margin: 0; padding-left: 1.2rem; display: grid; gap: 0.4rem; }
@media (max-width: 900px) { .side { position: static; } }

/* Product list rows */
.product-list { list-style: none; margin: 1.25rem 0 0; padding: 0; display: grid; gap: 1.5rem; }
.product-row { display: grid; grid-template-columns: 200px 1fr; gap: 1.5rem; align-items: start; }
.product-row h3 { margin: 0 0 0.35rem; font-size: var(--step-2); }
.product-row h3 a { color: var(--ink); text-decoration: none; }
.product-row h3 a:hover { color: var(--moss); text-decoration: underline; }
.product-row p { color: var(--muted); max-width: 60ch; margin-bottom: 0.75rem; }
.swatch-thumb { aspect-ratio: 4 / 3; height: auto; }
@media (max-width: 560px) { .product-row { grid-template-columns: 110px 1fr; gap: 1rem; } .product-row h3 { font-size: var(--step-1); } }

/* Badges */
.badges { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.4rem; }
.badge { display: inline-flex; align-items: center; gap: 0.35rem; padding: 0.3rem 0.7rem; border-radius: 999px; font-size: var(--step--1); font-weight: 500; }
.badge-yes { background: var(--moss-soft); color: var(--ink); }
.badge-yes .icon { color: var(--moss); }
.badge-info { background: var(--warn-soft); color: var(--ink); }
.badge-info .icon { color: var(--warn); }

/* Product page */
.product-top { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4rem); padding-block: clamp(1.5rem, 3vw, 2.5rem); align-items: start; }
.swatch-product { aspect-ratio: 4 / 3; height: auto; }
.product-info .brand { font-weight: 600; color: var(--muted); margin-bottom: 0.3rem; }
.product-info h1 { font-size: clamp(1.9rem, 1.5rem + 1.6vw, 2.75rem); }
.product-info .badges { margin: 1.25rem 0; }
.product-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-bottom: 0.9rem; }
.colors { margin-top: 1.5rem; }
.colors h2 { font-size: var(--step-1); }
.chips { list-style: none; margin: 0 0 0.5rem; padding: 0; display: flex; flex-wrap: wrap; gap: 0.4rem; }
.chips li { border: 1px solid var(--line); border-radius: 999px; padding: 0.25rem 0.75rem; font-size: var(--step--1); background: var(--surface); }
@media (max-width: 860px) { .product-top { grid-template-columns: 1fr; } }

.calc { margin-top: 1.75rem; padding: 1.25rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); }
.calc h2 { font-size: var(--step-1); }
.calc-fields { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.75rem; margin-bottom: 0.9rem; }
.calc-out { display: block; margin-top: 0.9rem; font-weight: 600; }
.calc .fine { margin: 0.5rem 0 0; }
@media (max-width: 520px) { .calc-fields { grid-template-columns: 1fr 1fr; } .calc-fields .field:last-child { grid-column: span 2; } }

.spec-groups { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.25rem 2.5rem; margin-top: 1rem; }
.spec-group h3 { font-size: var(--step-0); font-family: var(--font-body); font-weight: 600; color: var(--moss); padding-bottom: 0.5rem; border-bottom: 2px solid var(--moss); margin-bottom: 0.75rem; letter-spacing: 0; }
.spec-group dl { margin: 0; display: grid; gap: 0.65rem; }
.spec-group dt { font-size: var(--step--1); color: var(--muted); }
.spec-group dd { margin: 0; font-weight: 500; }

.sources { margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--line); }
.sources h2 { font-size: var(--step-1); margin-top: 0; }
.sources ul { font-size: var(--step--1); color: var(--muted); }

/* FAQ */
.faq { margin-top: 2.5rem; }
.faq h2 { font-size: var(--step-2); }
.faq details { border-bottom: 1px solid var(--line); }
.faq details:first-of-type { border-top: 1px solid var(--line); }
.faq summary { cursor: pointer; padding: 1rem 2rem 1rem 0; font-weight: 600; list-style: none; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 0.25rem; top: 0.85rem; font-size: 1.3rem; color: var(--moss); }
.faq details[open] summary::after { content: "\2212"; }
.faq-a p { color: var(--muted); }

/* Tables */
.table-wrap { overflow-x: auto; margin: 0 0 2rem; }
table { border-collapse: collapse; width: 100%; min-width: 560px; font-size: var(--step--1); }
caption { text-align: left; font-weight: 600; margin-bottom: 0.5rem; font-size: var(--step-0); }
th, td { text-align: left; padding: 0.7rem 0.8rem; vertical-align: top; }
thead th { border-bottom: 2px solid var(--ink); }
tbody tr:nth-child(even) { background: var(--tint); }
tbody th { font-weight: 600; }

/* Hub lists */
.hub-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 1.75rem; }
.hub-list li { display: grid; grid-template-columns: 180px 1fr; gap: 1.5rem; align-items: start; }
.hub-list li:not(:has(img)) { grid-template-columns: 1fr; max-width: 70ch; }
.hub-list h2 { font-size: var(--step-2); margin-bottom: 0.3rem; }
.hub-list p { color: var(--muted); margin: 0; max-width: 65ch; }
@media (max-width: 560px) { .hub-list li { grid-template-columns: 100px 1fr; gap: 1rem; } .hub-list h2 { font-size: var(--step-1); } }

/* Forms */
.lead-form { display: grid; gap: 1.75rem; max-width: 720px; }
fieldset { border: 0; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 1rem 1.25rem; }
legend { font: 700 var(--step-2)/1.2 var(--font-display); margin-bottom: 1rem; padding: 0; }
.field { display: grid; gap: 0.35rem; align-content: start; }
.field:has(textarea), .field:has(input[type="file"]), fieldset > .check-list, fieldset > .error { grid-column: 1 / -1; }
label { font-weight: 600; font-size: 0.95rem; }
input, select, textarea {
  width: 100%; min-height: 46px; padding: 0.6rem 0.75rem; border: 1.5px solid #8a958e; border-radius: var(--r);
  background: var(--surface); color: var(--ink); font: 400 var(--step-0)/1.4 var(--font-body);
}
@media (prefers-color-scheme: dark) { input, select, textarea { border-color: #5d6a62; } }
input::placeholder, textarea::placeholder { color: var(--muted); opacity: 0.85; }
input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 3px solid var(--moss); outline-offset: 1px; border-color: var(--moss); }
input[aria-invalid="true"], select[aria-invalid="true"] { border-color: var(--error); }
.help { font-size: var(--step--1); color: var(--muted); margin: 0; }
.error { font-size: var(--step--1); color: var(--error); margin: 0; font-weight: 500; }
.form-status { margin: 0; font-weight: 600; }
.check-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem 1.25rem; }
.check { display: flex; align-items: center; gap: 0.6rem; font-weight: 500; cursor: pointer; }
.check input { width: 1.2rem; height: 1.2rem; min-height: 0; accent-color: var(--moss); }
@media (max-width: 600px) { fieldset, .check-list { grid-template-columns: 1fr; } }

/* Footer */
.site-footer { background: var(--surface); border-top: 1px solid var(--line); padding-top: clamp(2.5rem, 5vw, 4rem); font-size: 0.95rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 2rem; }
.footer-brand p { color: var(--muted); max-width: 36ch; margin-top: 1rem; }
.footer-h { font: 600 var(--step-0)/1.3 var(--font-body); margin: 0 0 0.75rem; letter-spacing: 0; }
.footer-h + ul + .footer-h, ul + .footer-h { margin-top: 1.5rem; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.45rem; }
.site-footer a { color: var(--ink); text-decoration: none; }
.site-footer a:hover { color: var(--moss); text-decoration: underline; }
.footer-legal { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; margin-top: 2.5rem; padding-block: 1.25rem; border-top: 1px solid var(--line); color: var(--muted); font-size: var(--step--1); }
.footer-legal p { margin: 0; }
.footer-legal ul { display: flex; gap: 1.25rem; }
@media (max-width: 860px) { .footer-grid { grid-template-columns: 1fr 1fr; } .footer-brand { grid-column: 1 / -1; } }

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; animation: none !important; } }

/* ---------- Diagrams (inline SVG, theme aware) ---------- */
.diagram { margin: 2rem 0 2.25rem; max-width: 620px; }
.diagram figcaption { font-size: var(--step--1); color: var(--muted); margin-top: 0.6rem; padding-left: 0.75rem; border-left: 2px solid var(--moss); }
.dg { width: 100%; height: auto; display: block; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 0.5rem; overflow: visible; }
.dg text { font-family: var(--font-body); fill: var(--ink); }
.dg .dg-h { font-size: 19px; font-weight: 600; }
.dg .dg-d { font-size: 17px; fill: var(--muted); }
.dg .dg-good { fill: var(--moss); font-weight: 600; }
.dg .dg-warn { fill: var(--warn); font-weight: 600; }
.dg .dg-stat { font: 700 36px var(--font-display); fill: var(--moss); }
.dg-ln { stroke: var(--muted); stroke-width: 1.3; fill: none; }
.dg-dot { fill: var(--ink); }
.dg-rule { stroke: var(--line); stroke-width: 1.5; }
.dg-edge, .dg-edge-f { stroke: rgb(40 30 20 / 0.45); stroke-width: 1; }
.dg-edge { fill: none; }
.dg-lit { fill: #fff; opacity: 0.28; }
.dg-shade { fill: #000; opacity: 0.2; }
.dg-joint { stroke: rgb(40 30 20 / 0.7); stroke-width: 1.3; fill: none; }
.dg-barrier { stroke: var(--moss); stroke-width: 3; fill: none; stroke-dasharray: 10 4; }
.dg-gap { stroke: var(--moss); stroke-width: 2; fill: none; }
.dg-vapor { stroke: var(--muted); stroke-width: 1.6; fill: none; opacity: 0.8; }
.dg-cable { stroke: var(--ink); stroke-width: 1.5; fill: none; }
.dg-meter { fill: var(--surface); stroke: var(--ink); stroke-width: 1.5; }
.dg-leveler { fill: var(--moss); opacity: 0.45; }
.dg-removed { stroke: var(--warn); stroke-width: 2; stroke-dasharray: 5 4; fill: none; }
.dg-straight { fill: #d9dcd6; }
.dg-flow { stroke: var(--moss); stroke-width: 1.6; fill: none; }
.dg-chip { fill: var(--moss-soft); }
.dg-glyph { color: var(--moss); fill: currentColor; }
.dg-stringer { fill: #e7dccb; }
.dg-carpet { stroke: #7d6d52; stroke-width: 8; fill: none; stroke-linejoin: round; stroke-linecap: round; }
.dg-nail { stroke: var(--ink); stroke-width: 2.5; }
.dg-glue { stroke: var(--moss); stroke-width: 2.5; fill: none; }
.dg-fill-moss { fill: var(--moss); }
.dg-fill-muted { fill: var(--muted); }
.dg-fill-ink { fill: var(--ink); }