/* ==========================================================================
   Drainline Services — cast iron & copper design system
   ========================================================================== */

:root {
  /* Brand palette from the client's logo SVG: blue #004aad, orange #ff6b10.
     Dark surfaces are a deepened navy of the logo blue; --copper tokens carry
     the logo orange (full-strength on dark, darkened for white-text buttons). */
  --iron: oklch(0.28 0.075 262);
  --iron-2: oklch(0.33 0.08 262);
  --iron-3: oklch(0.38 0.085 262);
  --brand-blue: #004aad;
  --bg: oklch(0.975 0.004 262);
  --surface: oklch(1 0 0);
  --ink: oklch(0.24 0.03 262);
  --ink-soft: oklch(0.42 0.03 262);
  --ink-on-iron: oklch(0.93 0.01 262);
  --ink-on-iron-soft: oklch(0.8 0.03 262);
  --copper: oklch(0.58 0.17 45);
  --copper-deep: oklch(0.5 0.155 45);
  --copper-bright: #ff6b10;
  --line: oklch(0.89 0.015 262);
  --line-on-iron: oklch(0.42 0.07 262);
  --radius: 6px;
  --font-display: "Big Shoulders", "Arial Narrow", sans-serif;
  --font-body: "Archivo", "Segoe UI", sans-serif;
  --container: 72rem;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  /* z-index scale */
  --z-sticky: 40;
  --z-header: 50;
  --z-callbar: 60;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 5.5rem; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

h1, h2, h3 { font-family: var(--font-display); line-height: 1.05; margin: 0 0 0.5em; text-wrap: balance; }
h1 { font-size: clamp(3rem, 9vw, 6rem); font-weight: 800; letter-spacing: -0.01em; }
h2 { font-size: clamp(2rem, 5vw, 3.25rem); font-weight: 700; }
h3 { font-size: clamp(1.35rem, 3vw, 1.75rem); font-weight: 700; }
p { margin: 0 0 1em; max-width: 70ch; text-wrap: pretty; }

a { color: var(--brand-blue); }
a:hover { color: oklch(0.35 0.13 262); }

:focus-visible { outline: 3px solid var(--copper); outline-offset: 3px; border-radius: 2px; }

.container { max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--copper); color: #fff; padding: 0.75rem 1.25rem; font-weight: 700;
}
.skip-link:focus { left: 0.5rem; top: 0.5rem; }

/* --- Buttons ------------------------------------------------------------ */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  min-height: 3rem; padding: 0.7rem 1.6rem;
  font-family: var(--font-body); font-weight: 700; font-size: 1rem;
  border-radius: var(--radius); border: 2px solid transparent;
  text-decoration: none; cursor: pointer;
  transition: background-color 160ms ease-out, color 160ms ease-out, transform 120ms ease-out;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--copper); color: #fff; }
.btn-primary:hover { background: var(--copper-deep); color: #fff; }
.btn-outline { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-outline:hover { background: var(--ink); color: var(--bg); }
.on-iron .btn-outline, .btn-outline.light { color: var(--ink-on-iron); border-color: var(--ink-on-iron); }
.on-iron .btn-outline:hover, .btn-outline.light:hover { background: var(--ink-on-iron); color: var(--iron); }
.btn-lg { min-height: 3.5rem; padding: 0.9rem 2.2rem; font-size: 1.1rem; }
.btn svg { flex: none; }

/* --- Header ------------------------------------------------------------- */

.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: var(--z-header);
  transition: background-color 220ms ease-out, box-shadow 220ms ease-out;
}
.site-header.scrolled, .site-header.solid {
  background: color-mix(in oklab, var(--iron) 94%, transparent);
  backdrop-filter: blur(8px);
  box-shadow: 0 1px 0 var(--line-on-iron);
}
.header-inner { display: flex; align-items: center; gap: 1.5rem; min-height: 4.5rem; }
.brand { display: flex; align-items: center; gap: 0.6rem; text-decoration: none; }
.brand-mark { flex: none; }
.brand-name {
  font-family: var(--font-display); font-weight: 800; font-size: 1.5rem; line-height: 1;
  color: var(--ink-on-iron); letter-spacing: 0.01em; text-transform: uppercase;
}
.brand-name span { color: var(--copper-bright); }
.main-nav { margin-left: auto; }
.main-nav ul { display: flex; gap: clamp(0.75rem, 2vw, 1.75rem); list-style: none; margin: 0; padding: 0; }
.main-nav a {
  color: var(--ink-on-iron-soft); text-decoration: none; font-weight: 500; font-size: 0.95rem;
  padding: 0.5rem 0.15rem; display: inline-block;
}
.main-nav a:hover, .main-nav a[aria-current="page"] { color: #fff; }
.main-nav a[aria-current="page"] { box-shadow: 0 2px 0 var(--copper-bright); }
.header-phone {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-display); font-weight: 800; font-size: 1.35rem;
  color: #fff; text-decoration: none; white-space: nowrap;
}
.header-phone:hover { color: var(--copper-bright); }
.header-phone svg { color: var(--copper-bright); }

.nav-toggle {
  display: none; margin-left: auto;
  background: none; border: 0; color: var(--ink-on-iron); cursor: pointer;
  padding: 0.6rem; min-width: 44px; min-height: 44px;
}

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .main-nav {
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--iron); border-top: 1px solid var(--line-on-iron);
    padding: 1rem var(--gutter) 1.5rem; margin-left: 0;
    display: none;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; gap: 0.25rem; }
  .main-nav a { display: block; padding: 0.75rem 0; font-size: 1.1rem; }
  .header-phone .phone-digits { display: none; }
}

/* --- Hero --------------------------------------------------------------- */

.hero {
  position: relative; color: var(--ink-on-iron);
  background: var(--iron);
  padding: clamp(8rem, 16vh, 11rem) 0 clamp(4rem, 8vh, 6.5rem);
  overflow: hidden;
}
.hero-photo {
  position: absolute; inset: 0; object-fit: cover; width: 100%; height: 100%;
  opacity: 0.55; filter: grayscale(0.9) contrast(1.08) brightness(0.9);
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(95deg,
      var(--iron) 0%,
      color-mix(in oklab, var(--iron) 88%, transparent) 48%,
      color-mix(in oklab, var(--iron) 35%, transparent) 100%),
    linear-gradient(180deg,
      color-mix(in oklab, var(--iron) 55%, transparent) 0%,
      transparent 40%,
      var(--iron) 98%);
}
/* copper light leak from the pipe mouth */
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: radial-gradient(42rem 26rem at 88% 42%, oklch(0.65 0.19 45 / 0.22), transparent 65%);
}

/* Subpage heroes: duotone tunnel texture behind the navy */
.hero-sub-page {
  background:
    linear-gradient(95deg,
      var(--iron) 0%,
      color-mix(in oklab, var(--iron) 93%, transparent) 55%,
      color-mix(in oklab, var(--iron) 72%, transparent) 100%),
    url("https://images.unsplash.com/photo-1623317648267-278ed9278bb7?auto=format&fit=crop&w=1600&q=70") center 40% / cover,
    var(--iron);
}
.hero .container { position: relative; z-index: 1; }
.hero-kicker {
  font-family: var(--font-display); font-weight: 600; font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  color: var(--copper-bright); margin: 0 0 0.75rem; text-transform: uppercase; letter-spacing: 0.06em;
}
.hero h1 { color: #fff; max-width: 14ch; margin-bottom: 0.35em; }
.hero h1 .accent { color: var(--copper-bright); }
.hero-sub { font-size: clamp(1.05rem, 2vw, 1.25rem); color: var(--ink-on-iron-soft); max-width: 54ch; line-height: 1.65; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-top: 2rem; align-items: center; }
.hero-phone {
  display: block; margin-top: 2.25rem;
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(2.2rem, 6vw, 3.6rem); line-height: 1;
  color: #fff; text-decoration: none; letter-spacing: 0.01em;
}
.hero-phone small { display: block; font-family: var(--font-body); font-weight: 500; font-size: 0.95rem; color: var(--ink-on-iron-soft); letter-spacing: 0.02em; margin-bottom: 0.4rem; }
.hero-phone:hover { color: var(--copper-bright); }

/* Subpage hero (shorter) */
.hero.hero-sub-page { padding-top: clamp(7rem, 13vh, 9.5rem); }

/* --- Trust strip -------------------------------------------------------- */

.trust-strip { background: var(--iron); color: var(--ink-on-iron); border-top: 1px solid var(--line-on-iron); position: relative; z-index: 1; }
.trust-strip .container {
  display: flex; flex-wrap: wrap; gap: 0.75rem 2.5rem; align-items: center;
  padding-block: 1rem; font-weight: 500; font-size: 0.95rem;
}
.trust-item { display: inline-flex; gap: 0.5rem; align-items: center; color: var(--ink-on-iron-soft); }
.trust-item svg { color: var(--copper-bright); flex: none; }

/* --- Sections & the drain line ------------------------------------------ */

.section { padding-block: clamp(4rem, 9vw, 7rem); }
.section-head { max-width: 46rem; margin-bottom: clamp(2rem, 5vw, 3.5rem); }
.section-head .lede { color: var(--ink-soft); font-size: 1.125rem; }

/* Signature: continuous copper drain line down the home page's left gutter */
.lined { position: relative; }
.lined::before {
  content: ""; position: absolute; top: 0; bottom: 0;
  left: max(calc((100vw - var(--container)) / 2 - 1.25rem), 0.6rem);
  width: 3px; background: var(--copper);
  opacity: 0.85;
}
.lined .fitting {
  position: absolute; top: clamp(4rem, 9vw, 7rem);
  left: max(calc((100vw - var(--container)) / 2 - 1.25rem), 0.6rem);
  width: 17px; height: 17px; margin-left: -7px;
  border-radius: 50%;
  background: var(--bg); border: 3px solid var(--copper);
}
.lined.on-iron .fitting { background: var(--iron); }
@media (max-width: 1279px) { .lined::before, .lined .fitting { display: none; } }

/* --- Services grid ------------------------------------------------------ */

.services-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}
.service-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.75rem 1.5rem 1.5rem; display: flex; flex-direction: column; gap: 0.6rem;
  text-decoration: none; color: inherit;
  transition: transform 180ms ease-out, box-shadow 180ms ease-out, border-color 180ms ease-out;
}
.service-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 24px -14px oklch(0.3 0.03 40 / 0.45);
  border-color: var(--copper);
  color: inherit;
}
.service-card svg { color: var(--copper); }
.service-card h3 { margin: 0.4rem 0 0; }
.service-card p { color: var(--ink-soft); font-size: 0.98rem; margin: 0; }
.service-card .card-more { margin-top: auto; padding-top: 0.75rem; font-weight: 700; color: var(--copper); font-size: 0.95rem; }

/* --- Method (real sequence: numbered deliberately) ----------------------- */

.method { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 2rem; counter-reset: step; }
.method-step { position: relative; padding-top: 0.5rem; }
.method-step .step-num {
  font-family: var(--font-display); font-weight: 800; font-size: 3.2rem; line-height: 1;
  color: var(--copper); display: block; margin-bottom: 0.5rem;
}
.method-step p { color: var(--ink-soft); font-size: 1rem; }

/* --- Stats band --------------------------------------------------------- */

.stats-band { background: var(--iron); color: var(--ink-on-iron); }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 2rem; text-align: left; }
.stat-num {
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(3.4rem, 8vw, 5.5rem); line-height: 1; color: #fff;
  font-variant-numeric: tabular-nums;
}
.stat-num .plus { color: var(--copper-bright); }
.stat-label { color: var(--ink-on-iron-soft); font-weight: 500; margin-top: 0.4rem; font-size: 1.05rem; }

/* --- Why us ------------------------------------------------------------- */

.why-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2.25rem 3rem; }
.why-item h3 { display: flex; gap: 0.65rem; align-items: baseline; font-size: 1.3rem; }
.why-item svg { color: var(--copper); flex: none; align-self: center; }
.why-item p { color: var(--ink-soft); font-size: 1rem; margin: 0.4rem 0 0; }
.why-head { display: flex; gap: 0.75rem; align-items: center; margin-bottom: 0.35rem; }
.why-head h3 { margin: 0; }

/* --- Split photo sections ------------------------------------------------ */

.split { display: grid; gap: clamp(1.5rem, 4vw, 4rem); align-items: center; }
@media (min-width: 860px) { .split { grid-template-columns: 1fr 1fr; } .split.flip > .split-media { order: 2; } }
.split-media { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); }
.split-media img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4 / 3; }
.split-media.portrait { max-width: 26rem; justify-self: center; }
.split-media.portrait img { aspect-ratio: 3 / 4; }

/* --- Team ----------------------------------------------------------------- */

.team-grid { display: grid; gap: 1.5rem; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); max-width: 46rem; }
.team-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; }
.team-photo { aspect-ratio: 3 / 4; object-fit: cover; width: 100%; }
.team-monogram {
  aspect-ratio: 3 / 4; display: flex; align-items: center; justify-content: center;
  background: var(--iron);
  font-family: var(--font-display); font-weight: 800; font-size: 5rem; color: var(--copper-bright);
}
.team-body { padding: 1.35rem 1.4rem 1.5rem; }
.team-body h3 { margin-bottom: 0.1em; }
.team-role { color: var(--copper); font-weight: 700; font-size: 0.95rem; margin-bottom: 0.75rem; }
.team-body p { color: var(--ink-soft); font-size: 0.98rem; margin: 0; }

/* --- Service area -------------------------------------------------------- */

.area-band { background: var(--surface); border-block: 1px solid var(--line); }
.area-band .container { display: grid; gap: 2rem; padding-block: clamp(3rem, 6vw, 4.5rem); }
@media (min-width: 860px) { .area-band .container { grid-template-columns: 1.2fr 1fr; align-items: center; } }
.area-cities { font-family: var(--font-display); font-weight: 700; font-size: clamp(1.6rem, 4vw, 2.6rem); line-height: 1.25; color: var(--ink); }
.area-cities .sep { color: var(--copper); }

/* --- Reviews / external proof -------------------------------------------- */

.proof-band { text-align: left; }
.proof-links { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 1.5rem; }

.rating-line { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.75rem 1.25rem; margin-bottom: clamp(1.5rem, 4vw, 2.5rem); }
.rating-num { font-family: var(--font-display); font-weight: 800; font-size: clamp(3.5rem, 8vw, 5.5rem); line-height: 1; }
.stars { display: inline-flex; gap: 2px; color: var(--copper-bright); }
.stars svg { width: 22px; height: 22px; }
.rating-count { font-weight: 700; color: var(--ink-soft); }
.on-iron .rating-count { color: var(--ink-on-iron-soft); }

.review-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.25rem; }
.review-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.5rem 1.4rem; display: flex; flex-direction: column; gap: 0.8rem;
}
.review-card .stars svg { width: 16px; height: 16px; }
.review-card blockquote { margin: 0; color: var(--ink); font-size: 0.98rem; }
.review-card cite { font-style: normal; font-weight: 700; margin-top: auto; }
.review-card .meta { display: block; font-weight: 400; font-size: 0.85rem; color: var(--ink-soft); margin-top: 0.15rem; }

/* --- CTA band ------------------------------------------------------------ */

.cta-band { background: var(--copper); color: #fff; }
.cta-band .container { padding-block: clamp(3.5rem, 7vw, 5.5rem); display: grid; gap: 1.5rem; }
@media (min-width: 860px) { .cta-band .container { grid-template-columns: 1fr auto; align-items: center; } }
.cta-band h2 { color: #fff; margin: 0; }
.cta-band p { color: #fff; margin: 0.5rem 0 0; }
.cta-band .btn-outline { color: #fff; border-color: #fff; }
.cta-band .btn-outline:hover { background: #fff; color: var(--copper-deep); }
.cta-band .btn-primary { background: var(--iron); }
.cta-band .btn-primary:hover { background: oklch(0.18 0.02 40); }

/* --- FAQ ------------------------------------------------------------------ */

.faq-layout { display: grid; gap: 2.5rem; align-items: start; }
@media (min-width: 960px) { .faq-layout { grid-template-columns: 1fr 20rem; } }
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q {
  width: 100%; text-align: left; background: none; border: 0; cursor: pointer;
  font-family: var(--font-body); font-weight: 700; font-size: 1.1rem; color: var(--ink);
  padding: 1.15rem 2.5rem 1.15rem 0.25rem; position: relative; min-height: 44px;
}
.faq-q::after {
  content: "+"; position: absolute; right: 0.5rem; top: 50%; translate: 0 -50%;
  font-family: var(--font-display); font-size: 1.6rem; font-weight: 600; color: var(--copper);
  transition: rotate 200ms ease-out;
}
.faq-item[data-open] .faq-q::after { rotate: 45deg; }
.faq-a { display: none; padding: 0 0.25rem 1.25rem; color: var(--ink-soft); }
.faq-item[data-open] .faq-a { display: block; }
.faq-aside {
  background: var(--iron); color: var(--ink-on-iron); border-radius: var(--radius);
  padding: 1.75rem 1.5rem; position: sticky; top: 5.5rem;
}
.faq-aside h3 { color: #fff; }
.faq-aside p { color: var(--ink-on-iron-soft); font-size: 0.98rem; }

/* --- Contact / form ------------------------------------------------------- */

.contact-layout { display: grid; gap: 2.5rem; align-items: start; }
@media (min-width: 960px) { .contact-layout { grid-template-columns: 1.25fr 1fr; } }

.lead-form { display: grid; gap: 1.1rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(1.5rem, 4vw, 2.25rem); }
.field { display: grid; gap: 0.35rem; }
.field label { font-weight: 700; font-size: 0.95rem; }
.field .req { color: var(--copper); }
.field input, .field select, .field textarea {
  font: inherit; color: var(--ink); background: var(--bg);
  border: 1px solid oklch(0.75 0.02 40); border-radius: var(--radius);
  padding: 0.7rem 0.85rem; min-height: 44px; width: 100%;
}
.field textarea { min-height: 7rem; resize: vertical; }
.field input:focus-visible, .field select:focus-visible, .field textarea:focus-visible { outline-offset: 1px; }
.field .error-msg { color: oklch(0.5 0.19 29); font-size: 0.9rem; display: none; }
.field.invalid .error-msg { display: block; }
.field.invalid input { border-color: oklch(0.5 0.19 29); }
.form-row { display: grid; gap: 1.1rem; }
@media (min-width: 640px) { .form-row { grid-template-columns: 1fr 1fr; } }

.consent-block {
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.15rem 1.15rem 1.25rem; background: var(--bg); font-size: 0.92rem; color: var(--ink-soft);
}
.consent-block ul { margin: 0.5rem 0 0.75rem; padding-left: 1.25rem; }
.consent-check { display: flex; gap: 0.7rem; align-items: flex-start; margin-top: 0.75rem; color: var(--ink); }
.consent-check input { width: 1.35rem; height: 1.35rem; margin-top: 0.15rem; flex: none; accent-color: var(--copper); }
.consent-block.flash { animation: consent-flash 900ms ease-out; }
@keyframes consent-flash { 0%, 60% { border-color: var(--copper); box-shadow: 0 0 0 3px oklch(0.55 0.145 38 / 0.25); } 100% { box-shadow: none; } }

.form-status { font-weight: 700; display: none; padding: 1rem 1.15rem; border-radius: var(--radius); }
.form-status.ok { display: block; background: oklch(0.93 0.05 150); color: oklch(0.32 0.09 150); }
.form-status.err { display: block; background: oklch(0.93 0.04 29); color: oklch(0.4 0.15 29); }

.contact-aside { display: grid; gap: 1.25rem; }
.contact-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.5rem; }
.contact-card h3 { font-size: 1.2rem; }
.contact-card a.big {
  font-family: var(--font-display); font-weight: 800; font-size: 2rem; text-decoration: none; color: var(--ink);
}
.contact-card a.big:hover { color: var(--copper); }
.contact-card p { font-size: 0.98rem; color: var(--ink-soft); margin: 0.35rem 0 0; }

/* --- Prose pages (privacy/terms) ------------------------------------------ */

.prose { max-width: 46rem; }
.prose h2 { font-size: 1.8rem; margin-top: 2.5rem; }
.prose h3 { font-size: 1.25rem; margin-top: 1.75rem; }
.prose li { margin-bottom: 0.4rem; }

/* --- Footer ---------------------------------------------------------------- */

.site-footer { background: var(--iron); color: var(--ink-on-iron-soft); }
.footer-grid {
  display: grid; gap: 2.5rem; padding-block: clamp(3rem, 6vw, 4.5rem);
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.site-footer h3 { color: #fff; font-size: 1.15rem; letter-spacing: 0.04em; text-transform: uppercase; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.45rem; }
.site-footer a { color: var(--ink-on-iron-soft); text-decoration: none; }
.site-footer a:hover { color: #fff; }
.footer-phone { font-family: var(--font-display); font-weight: 800; font-size: 2rem; color: #fff !important; }
.footer-bottom {
  border-top: 1px solid var(--line-on-iron);
  padding-block: 1.25rem; font-size: 0.88rem;
  display: flex; flex-wrap: wrap; gap: 0.5rem 1.75rem; align-items: center;
}
.footer-bottom a { color: var(--ink-on-iron-soft); }

/* --- Sticky mobile call bar ------------------------------------------------ */

.callbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: var(--z-callbar);
  display: none; grid-template-columns: 1fr 1fr; gap: 1px;
  background: var(--line-on-iron);
  translate: 0 100%; transition: translate 260ms ease-out;
  padding-bottom: env(safe-area-inset-bottom);
}
.callbar.visible { translate: 0 0; }
.callbar a {
  display: flex; align-items: center; justify-content: center; gap: 0.5rem;
  min-height: 3.4rem; font-weight: 800; font-size: 1.05rem; text-decoration: none;
}
.callbar .call { background: var(--copper); color: #fff; }
.callbar .text { background: var(--iron); color: #fff; }
@media (max-width: 860px) {
  .callbar { display: grid; }
  body { padding-bottom: 3.4rem; }
}
@media (prefers-reduced-motion: reduce) { .callbar { transition: none; } }

/* --- Triage tool ----------------------------------------------------------- */

.triage { background: var(--iron); color: var(--ink-on-iron); }
.triage .container { padding-block: clamp(3.5rem, 7vw, 5.5rem); }
.triage h2 { color: #fff; }
.triage .lede { color: var(--ink-on-iron-soft); }
.triage-options { display: flex; flex-wrap: wrap; gap: 0.6rem; margin: 1.5rem 0; }
.triage-btn {
  font: inherit; font-weight: 700; font-size: 0.95rem; cursor: pointer;
  color: var(--ink-on-iron); background: var(--iron-2);
  border: 1px solid var(--line-on-iron); border-radius: var(--radius);
  padding: 0.75rem 1.1rem; min-height: 44px;
  transition: background-color 160ms ease-out, border-color 160ms ease-out;
}
.triage-btn:hover { background: var(--iron-3); }
.triage-btn[aria-pressed="true"] { background: var(--copper); border-color: var(--copper); color: #fff; }
.triage-result {
  background: var(--iron-2); border: 1px solid var(--line-on-iron); border-radius: var(--radius);
  padding: 1.5rem 1.5rem 1.6rem; max-width: 46rem;
}
.triage-result[hidden] { display: none; }
.triage-result h3 { color: #fff; margin-bottom: 0.4rem; }
.triage-result .likely { color: var(--copper-bright); font-weight: 700; font-size: 0.95rem; margin-bottom: 0.6rem; }
.triage-result p { color: var(--ink-on-iron-soft); }
.triage-result .hero-ctas { margin-top: 1.25rem; }

/* --- Pipe diagram ---------------------------------------------------------- */

.pipe-diagram-wrap { display: grid; gap: 2rem; align-items: start; }
@media (min-width: 900px) { .pipe-diagram-wrap { grid-template-columns: 1.3fr 1fr; } }
.pipe-svg { width: 100%; height: auto; display: block; }
.pipe-hotspot { cursor: pointer; }
.pipe-hotspot circle.ring { fill: var(--copper); opacity: 0.92; transition: opacity 150ms ease-out; }
.pipe-hotspot:hover circle.ring { opacity: 1; }
.pipe-hotspot text { fill: #fff; font-family: var(--font-body); font-weight: 700; font-size: 13px; }
.pipe-hotspot[aria-pressed="true"] circle.ring { stroke: #fff; stroke-width: 2.5; }
.pipe-hotspot:focus-visible { outline: 3px solid var(--copper); outline-offset: 2px; }
.pipe-detail { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.5rem; }
.pipe-detail h3 { margin-bottom: 0.35rem; }
.pipe-detail .fix { font-weight: 700; color: var(--copper); font-size: 0.95rem; margin-bottom: 0.6rem; }
.pipe-detail p { color: var(--ink-soft); font-size: 0.98rem; }

/* --- Articles / Drain School ---------------------------------------------- */

.article-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.25rem; }
.article-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.6rem 1.5rem; text-decoration: none; color: inherit; display: flex; flex-direction: column; gap: 0.6rem;
  transition: transform 180ms ease-out, box-shadow 180ms ease-out, border-color 180ms ease-out;
}
.article-card:hover { transform: translateY(-3px); border-color: var(--copper); box-shadow: 0 10px 24px -14px oklch(0.3 0.05 262 / 0.45); color: inherit; }
.article-card .tag { font-weight: 700; font-size: 0.82rem; color: var(--copper); }
.article-card h3 { margin: 0; }
.article-card p { color: var(--ink-soft); font-size: 0.95rem; margin: 0; }
.article-card .card-more { margin-top: auto; padding-top: 0.6rem; font-weight: 700; color: var(--copper); font-size: 0.95rem; }

.article-body { max-width: 46rem; }
.article-body h2 { font-size: 1.9rem; margin-top: 2.25rem; }
.article-body h3 { font-size: 1.3rem; margin-top: 1.5rem; }
.article-body li { margin-bottom: 0.5rem; color: var(--ink); }
.answer-box {
  background: var(--surface); border: 1px solid var(--copper); border-radius: var(--radius);
  padding: 1.25rem 1.4rem; margin: 1.75rem 0;
}
.answer-box .label { font-weight: 700; color: var(--copper); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.05em; display: block; margin-bottom: 0.4rem; }
.answer-box p { margin: 0; font-weight: 500; }
.article-meta { color: var(--ink-soft); font-size: 0.92rem; margin-bottom: 2rem; }

/* --- Glossary --------------------------------------------------------------- */

.glossary dl { max-width: 46rem; margin: 0; }
.glossary dt { font-family: var(--font-display); font-weight: 700; font-size: 1.35rem; margin-top: 1.75rem; }
.glossary dd { margin: 0.35rem 0 0; color: var(--ink-soft); max-width: 65ch; }

/* --- 404 -------------------------------------------------------------------- */

.notfound { min-height: 70vh; display: flex; align-items: center; background: var(--iron); color: var(--ink-on-iron); }
.notfound .code { font-family: var(--font-display); font-weight: 800; font-size: clamp(6rem, 20vw, 12rem); line-height: 1; color: var(--copper-bright); }
.notfound h1 { color: #fff; font-size: clamp(2rem, 5vw, 3rem); }
.notfound p { color: var(--ink-on-iron-soft); }

/* --- Draw-on-scroll drain line (JS-injected fill; ::before is the track) --- */

.js .lined.line-animated::before { opacity: 0.22; }
.drain-line-fill {
  position: absolute; top: 0;
  left: max(calc((100vw - var(--container)) / 2 - 1.25rem), 0.6rem);
  width: 3px; height: 0; background: var(--copper);
  pointer-events: none;
}
@media (max-width: 1279px) { .drain-line-fill { display: none; } }

/* --- Reveal motion (gated on .js so no-JS renders final states) ------------ */

.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity 500ms ease-out, transform 500ms cubic-bezier(0.16, 1, 0.3, 1); }
.js .reveal.in { opacity: 1; transform: none; }
.js .hero [data-stagger] { opacity: 0; transform: translateY(14px); animation: hero-in 480ms cubic-bezier(0.16, 1, 0.3, 1) forwards; }
.js .hero [data-stagger="2"] { animation-delay: 90ms; }
.js .hero [data-stagger="3"] { animation-delay: 180ms; }
.js .hero [data-stagger="4"] { animation-delay: 270ms; }
@keyframes hero-in { to { opacity: 1; transform: none; } }

@media (prefers-reduced-motion: reduce) {
  .js .reveal, .js .hero [data-stagger] { opacity: 1 !important; transform: none !important; animation: none !important; transition: none !important; }
  .service-card, .btn { transition: none; }
}

/* Blueprint grid texture for dark bands (last so it beats background shorthands) */
.blueprint {
  background-image:
    repeating-linear-gradient(0deg, transparent 0 47px, oklch(1 0 0 / 0.05) 47px 48px),
    repeating-linear-gradient(90deg, transparent 0 47px, oklch(1 0 0 / 0.05) 47px 48px);
}

/* Article tables + field notes (content engine) */
.article-body table { border-collapse: collapse; width: 100%; margin: 1.5rem 0; font-size: 0.97rem; }
.article-body th { text-align: left; font-family: var(--font-body); font-weight: 700; background: var(--iron); color: var(--ink-on-iron); padding: 0.65rem 0.85rem; }
.article-body td { padding: 0.6rem 0.85rem; border-bottom: 1px solid var(--line); vertical-align: top; }
.article-body tr:nth-child(even) td { background: var(--surface); }
.table-scroll { overflow-x: auto; }
.field-note {
  background: var(--iron); color: var(--ink-on-iron); border-radius: var(--radius);
  padding: 1.4rem 1.5rem; margin: 1.75rem 0;
}
.field-note .label { font-weight: 700; color: var(--copper-bright); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.05em; display: block; margin-bottom: 0.4rem; }
.field-note p { color: var(--ink-on-iron); margin: 0; }