/* Layout: black and orange. Dark hero, a price list grouped into Plans / Regulations / Structure, how it works, drainage, for architects, contact. */
:root {
  --bg: #FFFFFF;
  --surface: #F5F5F4;
  --ink: #141414;
  --muted: #55575A;
  --line: #DEDEDB;
  --band: #141414;
  --band-ink: #FFFFFF;
  --band-muted: #BDBDBA;
  --accent: #FF7F27;
  --accent-ink: #141414;
  --accent-text: #B34700;
  --on-band-accent: #FF8F3F;
  --regs: #7A3FA3;
  --struct: #4F6F95;
  --suds: #1F7A6B;
  --font-display: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-mono: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121212;
    --surface: #1B1B1A;
    --ink: #F0F0EC;
    --muted: #AEAEAA;
    --line: #363634;
    --band: #1C1C1B;
    --accent: #FF8A3A;
    --accent-text: #FF9A55;
    --regs: #C39BE8;
    --struct: #86A9D0; --suds: #5FC1AA;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #121212; --surface: #1B1B1A; --ink: #F0F0EC; --muted: #AEAEAA; --line: #363634;
  --band: #1C1C1B; --accent: #FF8A3A; --accent-text: #FF9A55; --regs: #C39BE8; --struct: #86A9D0; --suds: #5FC1AA;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg); color: var(--ink); font-family: var(--font-body); font-size: 16px; line-height: 1.6; margin: 0;
  padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); padding-block: 0;
}
.wrap { max-width: 960px; margin: 0 auto; }
a { color: var(--accent-text); }
:focus-visible { outline: 2px solid var(--accent-text); outline-offset: 3px; }
.mono { font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.01em; text-transform: none; color: var(--muted); }

/* Header */
.top { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px 24px; padding-block: 18px; }
.brand { display: flex; flex-direction: column; align-items: flex-start; gap: 6px; margin: 0; text-decoration: none; color: var(--ink); }
.brand img { height: 44px; width: auto; display: block; }
.brand .lg-dark { display: none; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .brand .lg-light { display: none; } :root:not([data-theme="light"]) .brand .lg-dark { display: block; } }
:root[data-theme="dark"] .brand .lg-light { display: none; }
:root[data-theme="dark"] .brand .lg-dark { display: block; }
.brand b { display: block; font-family: var(--font-display); font-weight: 600; font-size: 1.5rem; line-height: 1; letter-spacing: 0.005em; }
.brand small { display: block; font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.04em; color: var(--muted); margin-top: 3px; }
.top a.link { font-family: var(--font-body); font-weight: 500; font-size: 0.95rem; color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--line); }
.top a.link:hover { border-color: var(--accent-text); }
.reach { display: flex; flex-wrap: wrap; gap: 6px 20px; }

/* Hero */
.hero { background: var(--band); color: var(--band-ink); border-radius: 4px; padding: 30px 20px 26px; }
.hero h1 { font-family: var(--font-display); font-weight: 700; font-size: clamp(2.1rem, 7vw, 3.3rem); line-height: 1.06; letter-spacing: -0.03em; margin: 0 0 16px; text-wrap: balance; max-width: 16ch; }
.hero h1 em { font-style: normal; color: var(--on-band-accent); }
.hero p.lead { margin: 0 0 24px; max-width: 54ch; color: var(--band-muted); font-size: 1.05rem; }
.need { background: var(--bg); color: var(--ink); border-radius: 3px; padding: 18px 16px 16px; }
.need h2 { font-family: var(--font-display); font-weight: 700; letter-spacing: -0.015em; font-size: 1.4rem; margin: 0 0 12px; }
.tiles { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.tile { display: flex; align-items: center; justify-content: space-between; gap: 8px; min-height: 56px; padding: 10px 14px; border: 1px solid var(--line); border-radius: 3px; color: var(--ink); text-decoration: none; font-weight: 500; font-size: 0.95rem; line-height: 1.25; background: var(--bg); }
.tile:hover { border-color: var(--accent-text); }
.tile span { color: var(--accent-text); font-family: var(--font-mono); flex: none; }
.tile.sure { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.tile.sure span { color: var(--accent-ink); }

/* Sections */
section { padding-block: 56px; }
h2.sec { font-family: var(--font-display); font-weight: 700; letter-spacing: -0.02em; font-size: clamp(1.6rem, 5vw, 2.2rem); line-height: 1.12; margin: 0 0 8px; text-wrap: balance; }
.lede { margin: 0 0 28px; color: var(--muted); max-width: 62ch; }

.group { margin-top: 36px; scroll-margin-top: 16px; }
.group:first-of-type { margin-top: 0; }
.ghead { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 14px; border-top: 3px solid var(--tone); padding-top: 12px; margin-bottom: 4px; }
.ghead h3 { font-family: var(--font-display); font-weight: 700; letter-spacing: -0.02em; font-size: 1.5rem; margin: 0; line-height: 1.15; }
.ghead .tag { font-family: var(--font-mono); font-size: 0.8rem; letter-spacing: 0.01em; text-transform: none; color: var(--tone); }
.group.plans { --tone: var(--accent-text); }
.group.regs { --tone: var(--regs); }
.group.struct { --tone: var(--struct); }
.group.suds { --tone: var(--suds); }
.gdesc { margin: 0 0 8px; color: var(--muted); max-width: 62ch; }
.prices { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.prices li { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.prices .n { font-weight: 500; }
.prices .d { display: block; color: var(--muted); font-size: 0.9rem; font-weight: 400; }
.prices .p { font-family: var(--font-display); font-weight: 600; font-size: 1.35rem; white-space: nowrap; color: var(--ink); }
.prices .p small { font-family: var(--font-mono); font-weight: 400; font-size: 0.72rem; color: var(--muted); margin-right: 4px; text-transform: uppercase; letter-spacing: 0.04em; }
.note { margin: 12px 0 0; font-size: 0.9rem; color: var(--muted); max-width: 66ch; }

.steps { display: grid; grid-template-columns: 1fr; gap: 0; border-top: 2px solid var(--ink); }
.step { padding: 20px 0; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 44px 1fr; gap: 4px 12px; }
.step .n { font-family: var(--font-display); font-weight: 600; font-size: 2rem; line-height: 1; color: var(--accent-text); grid-row: span 2; }
.step h3 { font-family: var(--font-display); font-weight: 600; font-size: 1.2rem; margin: 0; line-height: 1.2; }
.step p { margin: 0; color: var(--muted); }

.cols { display: grid; grid-template-columns: 1fr; gap: 20px; }
.cols > div { border-top: 3px solid var(--accent); padding-top: 12px; }
.cols h3 { font-family: var(--font-display); font-weight: 600; font-size: 1.2rem; margin: 0 0 6px; }
.cols p { margin: 0; color: var(--muted); }

.start { background: var(--band); color: var(--band-ink); border-radius: 4px; padding: 28px 20px; }
.start h2 { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.6rem, 5vw, 2.2rem); line-height: 1.12; margin: 0 0 12px; }
.start p { margin: 0 0 20px; max-width: 58ch; color: var(--band-muted); }
.cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.btn { font-family: var(--font-body); font-weight: 500; font-size: 0.95rem; background: var(--accent); color: var(--accent-ink); border: 1px solid var(--accent); padding: 12px 18px; border-radius: 3px; cursor: pointer; text-decoration: none; display: inline-block; }
.btn:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; color: var(--band-ink); border-color: var(--band-muted); }
.start .emailline { margin: 20px 0 0; font-family: var(--font-mono); font-size: 0.9rem; color: var(--band-ink); overflow-wrap: anywhere; }
.start .where { margin: 6px 0 0; font-family: var(--font-mono); font-size: 0.8rem; color: var(--band-muted); }

footer { padding-block: 24px 32px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; }
footer .mono { text-transform: none; letter-spacing: 0.02em; }

@media (min-width: 760px) {
  .hero { padding: 48px 40px 32px; }
  .need { padding: 24px 24px 22px; }
  .tiles { grid-template-columns: repeat(4, 1fr); }
  .steps { grid-template-columns: repeat(4, 1fr); gap: 24px; border-top: 0; }
  .step { display: block; border: 0; border-top: 2px solid var(--ink); padding: 16px 0 0; }
  .step .n { display: block; margin-bottom: 10px; }
  .step h3 { margin-bottom: 6px; }
  .cols { grid-template-columns: repeat(3, 1fr); gap: 28px; }
  .start { padding: 44px 40px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }


.hero-top { display: grid; grid-template-columns: 1fr; gap: 28px; align-items: center; margin-bottom: 24px; }
.hero-top h1 { margin-bottom: 16px; }
.hero-top p.lead { margin: 0; }
.fig { margin: 0; }
.fig-photo { display: block; width: 100%; height: auto; border-radius: 3px; }
.fig figcaption { margin-top: 6px; color: var(--band-muted); font-size: 0.75rem; }
.svc { margin: 14px 0 6px; max-width: 520px; }
.svc img { display: block; width: 100%; aspect-ratio: 8 / 5; object-fit: cover; border-radius: 3px; border: 1px solid var(--line); }
.svc figcaption { margin-top: 6px; color: var(--muted); font-size: 0.72rem; }
@media (min-width: 860px) { .hero-top { grid-template-columns: 1.1fr 1fr; gap: 48px; } }


.ghead h3 { line-height: 0; }
.ghead h3 img { display: block; height: auto; width: 230px; max-width: 100%; }
.ghead h3 .lg-dark { display: none; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .ghead h3 .lg-light { display: none; } :root:not([data-theme="light"]) .ghead h3 .lg-dark { display: block; } }
:root[data-theme="dark"] .ghead h3 .lg-light { display: none; }
:root[data-theme="dark"] .ghead h3 .lg-dark { display: block; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
@media (min-width: 760px) { .ghead h3 img { width: 260px; } }

/* Questions */
.faq { border-top: 2px solid var(--ink); margin-top: 18px; }
.faq details { border-bottom: 1px solid var(--line); padding: 0; }
.faq summary { cursor: pointer; list-style: none; padding: 16px 28px 16px 0; font-weight: 600; font-size: 1.02rem; line-height: 1.35; position: relative; min-height: 44px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 12px; font-size: 1.4rem; font-weight: 400; color: var(--accent-text); }
.faq details[open] summary::after { content: "\2212"; }
.faq summary:focus-visible { outline: 2px solid var(--accent-text); outline-offset: 2px; }
.faq .a { padding: 0 0 18px; max-width: 66ch; color: var(--ink); }
.faq .a p { margin: 0 0 10px; }
.updated { margin: 14px 0 0; font-size: 0.8rem; color: var(--muted); }
/* Enquiry form */
dialog.enq { border: 0; padding: 0; border-radius: 6px; width: min(560px, calc(100vw - 24px)); max-height: calc(100vh - 24px); background: var(--bg); color: var(--ink); box-shadow: 0 20px 60px rgba(0,0,0,.35); }
dialog.enq::backdrop { background: rgba(10,10,12,.62); }
.enq-in { padding: 22px 20px 20px; }
.enq-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; margin-bottom: 6px; }
.enq h2 { font-family: var(--font-display); font-weight: 700; letter-spacing: -0.02em; font-size: 1.5rem; line-height: 1.15; margin: 0; }
.enq .x { background: none; border: 1px solid var(--line); color: var(--ink); width: 36px; height: 36px; border-radius: 3px; font-size: 1.2rem; line-height: 1; cursor: pointer; flex: none; }
.enq .intro { margin: 0 0 16px; color: var(--muted); font-size: 0.95rem; }
.enq .fields { display: grid; grid-template-columns: 1fr; gap: 14px; }
.enq label { display: block; font-size: 0.85rem; font-weight: 500; margin-bottom: 5px; }
.enq label i { font-style: normal; color: var(--accent-text); }
.enq input, .enq select, .enq textarea { width: 100%; font: inherit; font-size: 1rem; color: var(--ink); background: var(--bg); border: 1px solid var(--muted); border-radius: 3px; padding: 11px 12px; min-height: 44px; }
.enq textarea { min-height: 110px; resize: vertical; }
.enq input:focus, .enq select:focus, .enq textarea:focus { outline: 2px solid var(--accent-text); outline-offset: 1px; }
.enq .hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.enq .actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 18px; }
.enq .actions .btn { min-height: 46px; }
.enq .note { font-size: 0.8rem; color: var(--muted); margin: 12px 0 0; }
.enq .msg { margin: 14px 0 0; font-size: 0.95rem; }
.enq .msg.err { color: var(--accent-text); }
.enq .done { padding: 6px 0 4px; }
.enq .done h2 { margin-bottom: 8px; }
@media (min-width: 560px) { .enq .fields.two { grid-template-columns: 1fr 1fr; } .enq .fields .full { grid-column: 1 / -1; } .enq-in { padding: 26px 26px 24px; } }

/* Questions */
.faq { border-top: 2px solid var(--ink); margin-top: 18px; }
.faq details { border-bottom: 1px solid var(--line); padding: 0; }
.faq summary { cursor: pointer; list-style: none; padding: 16px 28px 16px 0; font-weight: 600; font-size: 1.02rem; line-height: 1.35; position: relative; min-height: 44px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 12px; font-size: 1.4rem; font-weight: 400; color: var(--accent-text); }
.faq details[open] summary::after { content: "\2212"; }
.faq summary:focus-visible { outline: 2px solid var(--accent-text); outline-offset: 2px; }
.faq .a { padding: 0 0 18px; max-width: 66ch; color: var(--ink); }
.faq .a p { margin: 0 0 10px; }
.updated { margin: 14px 0 0; font-size: 0.8rem; color: var(--muted); }
.gcta { margin: 16px 0 0; }

.feegrid-unused { display: grid; grid-template-columns: 1fr; gap: 28px; margin-top: 18px; }
.feet { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.faq .feet { margin-top: 6px; max-width: 520px; } .feet caption { text-align: left; font-weight: 600; font-size: 1.05rem; padding: 0 0 8px; }
.feet th, .feet td { text-align: left; padding: 10px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
.feet td:last-child, .feet th:last-child { text-align: right; white-space: nowrap; padding-left: 12px; font-weight: 600; }
.feet th { font-weight: 500; }
.feenote { color: var(--muted); font-size: 0.85rem; margin-top: 14px; }
@media (min-width: 860px) { .feegrid { grid-template-columns: 1fr 1fr; gap: 40px; } }

/* ---- Added: navigation, service pages, facts, lists ---- */
.nav { display: flex; flex-wrap: wrap; gap: 4px 20px; padding-bottom: 10px; margin-bottom: 18px; border-bottom: 1px solid var(--line); }
.nav a { font-weight: 500; font-size: 0.93rem; color: var(--ink); text-decoration: none; border-bottom: 2px solid transparent; padding-block: 8px; min-height: 40px; }
.nav a:hover, .nav a[aria-current="page"] { border-bottom-color: var(--accent-text); }
.flinks { display: flex; flex-wrap: wrap; gap: 4px 16px; width: 100%; margin-top: 6px; }
.flinks a { color: var(--muted); }
.page-hero .brandmark { display: block; width: min(300px, 72%); height: auto; margin-bottom: 18px; }
.page-hero .hero-top h1 { max-width: 20ch; }
.page-hero .cta { margin: 20px 0 0; }
.page-hero.plans { --tone: var(--accent); } .page-hero.regs { --tone: var(--regs); } .page-hero.struct { --tone: var(--struct); } .page-hero.suds { --tone: var(--suds); }
.facts { list-style: none; margin: 0 0 8px; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.facts li { border-top: 3px solid var(--tone, var(--accent)); padding-top: 10px; }
.facts.plans { --tone: var(--accent-text); } .facts.regs { --tone: var(--regs); } .facts.struct { --tone: var(--struct); } .facts.suds { --tone: var(--suds); }
.facts b { display: block; font-weight: 600; font-size: 1rem; line-height: 1.25; }
.facts span { display: block; color: var(--muted); font-size: 0.88rem; margin-top: 2px; }
#prices > .facts { margin-bottom: 8px; }
.more { margin: 0 0 8px; font-weight: 500; }
ul.plain { margin: 0 0 8px; padding-left: 1.2em; max-width: 66ch; }
ul.plain li { margin: 0 0 8px; }
.lists { display: grid; grid-template-columns: 1fr; gap: 8px 40px; }
h2.sec.small { font-size: 1.35rem; margin-bottom: 10px; }
section p { max-width: 66ch; }
.cols.two { grid-template-columns: 1fr; }
.cols h3 a { color: var(--ink); text-decoration-color: var(--accent-text); }
.proj-grid { display: grid; grid-template-columns: 1fr; gap: 20px; margin-top: 8px; }
.proj { border-top: 3px solid var(--accent); padding-top: 12px; }
.proj h3 { font-family: var(--font-display); font-weight: 600; font-size: 1.15rem; margin: 0 0 2px; line-height: 1.25; }
.proj p { margin: 0 0 8px; color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { font-size: 0.8rem; font-weight: 500; border: 1px solid var(--line); border-radius: 3px; padding: 4px 8px; color: var(--ink); text-decoration: none; }
.chip:hover { border-color: var(--accent-text); }
@media (min-width: 760px) {
  .facts { grid-template-columns: repeat(4, 1fr); }
  .lists { grid-template-columns: 1fr 1fr; }
  .cols.two { grid-template-columns: 1fr 1fr; }
  .proj-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
}

.dwg-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,340px),1fr));gap:20px;margin-top:16px}
.dwg{margin:0}.dwg img{width:100%;height:auto;border:1px solid var(--line,#ddd);border-radius:4px;background:#fff;display:block}
.dwg figcaption{font-size:.9rem;margin-top:6px;line-height:1.4}

.proj img{width:100%;height:auto;border:1px solid var(--line,#ddd);border-radius:4px;background:#fff;display:block;margin-bottom:12px}