/* Flame Marine — site stylesheet
   Layout concept: an engineering report with a dark cover. Navy opening and closing bands
   frame white and pale-steel sections; left-aligned text columns; photographs of real engine
   parts carry the argument; brand red is reserved for the calls to action and sample marks.
   Single light theme: the page looks the same on every device. */

@font-face { font-family: "Source Serif 4"; font-weight: 400; font-style: normal; font-display: swap; src: url("fonts/source-serif-4-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "Source Serif 4"; font-weight: 600; font-style: normal; font-display: swap; src: url("fonts/source-serif-4-latin-600-normal.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Sans"; font-weight: 400; font-style: normal; font-display: swap; src: url("fonts/ibm-plex-sans-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Sans"; font-weight: 400; font-style: italic; font-display: swap; src: url("fonts/ibm-plex-sans-latin-400-italic.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Sans"; font-weight: 500; font-style: normal; font-display: swap; src: url("fonts/ibm-plex-sans-latin-500-normal.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Sans"; font-weight: 600; font-style: normal; font-display: swap; src: url("fonts/ibm-plex-sans-latin-600-normal.woff2") format("woff2"); }

:root {
  color-scheme: light;

  /* Colour */
  --ground: #ffffff;        /* page */
  --panel: #eef2f4;         /* quiet bands, cool steel tint */
  --navy: #15232f;          /* opening and closing bands */
  --navy-deep: #0e1820;     /* band gradient end */
  --on-navy: #ffffff;       /* text on navy */
  --on-navy-soft: #b9c6d0;  /* secondary text on navy */
  --ink: #15232f;           /* text, line work */
  --ink-soft: #3a4955;      /* secondary text */
  --muted: #5b6974;         /* captions, notes */
  --rule: #d2dade;          /* hairlines */
  --flame: #cc3300;         /* brand red: calls to action, sample marks */
  --flame-deep: #a82a00;    /* hover */
  --link: #1f4f78;          /* links: steel blue, red on hover */
  --plate: #ffffff;         /* behind report extracts and photos */
  --logo-red: #cc3300;
  --logo-grey: #5f6368;

  /* Report condition colours (semantic, separate from the brand red) */
  --ok-bg: #e3efe5;  --ok-fg: #1d5230;
  --watch-bg: #fbefd0; --watch-fg: #74480a;
  --act-bg: #f8dfdb; --act-fg: #86190f;

  /* Type */
  --font-display: "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-body: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;

  --step--1: 0.875rem;
  --step-0: 1.0625rem;
  --step-1: 1.25rem;
  --step-2: 1.625rem;
  --step-3: clamp(1.75rem, 1.2rem + 1.8vw, 2.25rem);
  --step-4: clamp(2.2rem, 1.3rem + 3.2vw, 3.4rem);

  --measure: 38rem;
  --wrap: 72rem;
  --gutter: max(16px, env(safe-area-inset-left, 0px));
  --gutter-r: max(16px, env(safe-area-inset-right, 0px));
  --header-h: 84px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}
/* Paints the strip above the sticky header on phones with a top system bar. */
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 30; background: var(--ground); }
img, svg { max-width: 100%; }
img { height: auto; }
[id] { scroll-margin-top: calc(var(--header-h) + 12px); }

h1, h2, h3 { margin: 0; text-wrap: balance; }
h1, h2 { font-family: var(--font-display); font-weight: 600; letter-spacing: -0.01em; line-height: 1.12; }
h1 { font-size: var(--step-4); }
h2 { font-size: var(--step-3); }
h3 { font-size: var(--step-1); font-weight: 600; line-height: 1.3; }
p { margin: 0; }
p + p { margin-top: 1em; }

a { color: var(--link); text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover { color: var(--flame); }
:focus-visible { outline: 2px solid var(--flame); outline-offset: 3px; border-radius: 2px; }

.wrap {
  max-width: calc(var(--wrap) + 2 * 16px);
  margin-inline: auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter-r);
}
.prose { max-width: var(--measure); }
.prose > * + * { margin-top: 1em; }
.prose h2 { margin-top: 2.4rem; }
.prose h3 { margin-top: 1.8rem; }
.prose > h2:first-child { margin-top: 0; }
.prose ul { padding-left: 1.2em; margin-bottom: 0; }
.prose li + li { margin-top: 0.35em; }
.prose .plate { margin-top: 1.4em; }
.prose .extract { margin-top: 1em; }
.lead { font-size: var(--step-1); line-height: 1.55; color: var(--ink-soft); max-width: 40rem; }
.note { font-size: var(--step--1); color: var(--muted); }
.skip { position: absolute; left: -999px; top: 0; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; }
.skip:focus { left: 16px; top: 8px; background: var(--ground); padding: 8px 12px; z-index: 40; }

/* Buttons */
.button {
  display: inline-block; text-decoration: none; font-weight: 500; font-size: 0.98rem;
  padding: 11px 20px; border-radius: 3px; border: 1px solid var(--ink); line-height: 1.3;
}
.button--solid { background: var(--ink); color: #fff; }
.button--solid:hover { background: var(--flame); border-color: var(--flame); color: #fff; }
.button--flame { background: var(--flame); border-color: var(--flame); color: #fff; }
.button--flame:hover { background: var(--flame-deep); border-color: var(--flame-deep); color: #fff; }
.button--line { color: var(--ink); background: transparent; }
.button--line:hover { border-color: var(--flame); color: var(--flame); }
.button--ghost { color: var(--on-navy); border-color: rgba(255, 255, 255, 0.55); background: transparent; }
.button--ghost:hover { border-color: #fff; color: #fff; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }

/* Header */
.site-header {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20;
  border-bottom: 1px solid var(--rule); background: var(--ground);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-block: 18px; }
.brand { display: block; line-height: 0; flex-shrink: 0; }
.brand .logo { height: 46px; width: auto; }
.nav { display: flex; align-items: center; gap: 4px 22px; flex-wrap: wrap; justify-content: flex-end; }
.nav a { color: var(--ink); text-decoration: none; font-size: 0.95rem; padding-block: 6px; border-bottom: 2px solid transparent; }
.nav a:hover { color: var(--flame); }
.nav a[aria-current="page"] { border-bottom-color: var(--flame); }
.nav .product { font-weight: 600; }
.nav .nav-label { display: none; }
.nav .nav-sep { width: 1px; height: 18px; background: var(--rule); margin-inline: 4px; }
.nav .cta {
  background: var(--flame); color: #fff; border: 1px solid var(--flame); border-radius: 3px;
  padding: 7px 16px; margin-left: 6px; font-weight: 500;
}
.nav .cta:hover { background: var(--flame-deep); border-color: var(--flame-deep); color: #fff; }
.menu { display: none; }

@media (max-width: 960px) {
  .site-header .wrap { flex-wrap: wrap; }
  .menu { display: block; }
  .menu summary {
    list-style: none; cursor: pointer; border: 1px solid var(--rule); border-radius: 3px;
    padding: 6px 12px; font-size: 0.95rem;
  }
  .menu summary::-webkit-details-marker { display: none; }
  .nav--wide { display: none; }
  .menu[open] { flex-basis: 100%; order: 3; }
  .menu[open] summary { display: inline-block; margin-left: auto; }
  .menu .nav { flex-direction: column; align-items: flex-start; gap: 2px; padding-top: 12px; }
  .menu .nav .nav-label { display: block; font-size: 0.78rem; color: var(--muted); margin-top: 10px; }
  .menu .nav .nav-sep { display: none; }
  .menu .nav .product { font-weight: 600; }
.nav .nav-label { display: none; }
.nav .nav-sep { width: 1px; height: 18px; background: var(--rule); margin-inline: 4px; }
.nav .cta { margin: 10px 0 0; }
  .menu:not([open]) { margin-left: auto; }
}

/* Page sections */
.section { padding-block: clamp(48px, 7vw, 88px); }
.section--panel { background: var(--panel); }
.section--tight { padding-block: clamp(32px, 4vw, 48px); }
.section--flush-top { padding-top: 0; }
.section-head { max-width: 44rem; margin-bottom: 32px; }
.section-head p { margin-top: 12px; color: var(--ink-soft); }

/* Inner page heading */
.page-head { padding-block: clamp(40px, 6vw, 72px) clamp(24px, 3vw, 36px); }
.page-head .lead { margin-top: 18px; }
/* Kickers: the report's section-title style, above the serif headings */
.kicker { margin: 0 0 12px; font-family: "IBM Plex Sans", system-ui, sans-serif; font-weight: 600; font-size: 0.76rem; line-height: 1.2; letter-spacing: 0.16em; text-transform: uppercase; color: var(--flame); }
.page-head .kicker { margin-bottom: 14px; }
.hero .kicker { color: #f0602e; margin-bottom: 16px; }
.section-head .kicker { margin-bottom: 8px; }
/* Marks legend in captions, in the report's own colours */
.legend { display: block; margin-top: 8px; color: var(--muted); font-size: 0.8rem; }
.legend span + span { margin-left: 12px; }
.legend svg { width: 12px; height: 12px; vertical-align: -1px; margin-right: 5px; }

/* Navy bands: hero and closing */
.band { background: linear-gradient(180deg, var(--navy) 0%, var(--navy-deep) 100%); color: var(--on-navy); }
.band a { color: var(--on-navy); }
.band a:hover { color: #fff; }
.band .lead { color: var(--on-navy-soft); }
.band .logo { --logo-red: #f0602e; --logo-grey: #c9ced3; }

.hero { position: relative; isolation: isolate; overflow: hidden; padding-block: clamp(64px, 9vw, 128px) 0; }
.hero-photo { position: absolute; inset: 0; z-index: -2; }
.hero-photo img { width: 100%; height: 100%; object-fit: cover; object-position: 60% 45%; display: block; }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(180deg, rgba(14, 24, 32, 0.42) 0%, rgba(14, 24, 32, 0.22) 45%, rgba(14, 24, 32, 0.9) 100%),
    linear-gradient(90deg, rgba(14, 24, 32, 0.9) 0%, rgba(14, 24, 32, 0.72) 42%, rgba(14, 24, 32, 0.12) 100%);
}
.hero-text { max-width: 38rem; padding-bottom: clamp(56px, 8vw, 104px); }
.hero h1 { max-width: 13em; text-shadow: 0 1px 2px rgba(0, 0, 0, 0.35); }
.hero .lead { margin-top: 22px; color: #dbe3e9; text-shadow: 0 1px 2px rgba(0, 0, 0, 0.35); }
.standing {
  list-style: none; margin: 0; padding: 22px 0 26px; border-top: 1px solid rgba(255, 255, 255, 0.22);
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px 32px;
  font-size: var(--step--1); color: #dbe3e9; line-height: 1.45;
}
.standing li { padding-left: 14px; border-left: 2px solid var(--flame); }
@media (max-width: 900px) { .standing { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .standing { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 860px) {
  .hero::before {
    background:
      linear-gradient(180deg, rgba(14, 24, 32, 0.82) 0%, rgba(14, 24, 32, 0.8) 60%, rgba(14, 24, 32, 0.95) 100%);
  }
}

/* Benefits row */
.benefits { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: clamp(20px, 3vw, 40px); }
.benefit { border-top: 1px solid var(--ink); padding-top: 16px; }
.benefit h3 { font-family: var(--font-display); font-size: var(--step-1); font-weight: 600; }
.benefit p { margin-top: 8px; color: var(--ink-soft); font-size: 0.98rem; }
@media (max-width: 900px) { .benefits { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .benefits { grid-template-columns: minmax(0, 1fr); } }

/* Designer requirements */
.docs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }
.doc { border-top: 3px solid var(--ink); padding-top: 16px; }
.doc .who { font-weight: 600; }
.doc .ref { color: var(--muted); font-size: var(--step--1); margin-top: 2px; font-variant-numeric: tabular-nums; }
.doc p { margin-top: 12px; }
.docs-note { margin-top: 24px; max-width: 44rem; }
@media (max-width: 720px) { .docs { grid-template-columns: minmax(0, 1fr); } }

/* Report illustration */
.report-layout { display: grid; grid-template-columns: minmax(0, 1fr); gap: 28px; align-items: start; }
.report-aside { max-width: 46rem; }
.report-sheet { background: var(--plate); border: 1px solid var(--rule); box-shadow: 0 18px 40px -28px rgba(21, 35, 47, 0.5); }
.report-sheet header { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 24px; padding: 16px 20px; border-bottom: 1px solid var(--rule); }
.report-sheet header b { font-weight: 600; }
.report-sheet header span { color: var(--muted); font-size: var(--step--1); }
.report-scroll { overflow-x: auto; }
.report-sheet table { border-collapse: collapse; width: 100%; min-width: 600px; font-size: 0.95rem; }
.report-sheet th { text-align: left; font-weight: 600; font-size: 0.82rem; color: var(--muted); padding: 10px 12px; border-bottom: 1px solid var(--rule); white-space: nowrap; }
.report-sheet th.num, .report-sheet td.num { text-align: right; font-variant-numeric: tabular-nums; }
.report-sheet td { padding: 11px 12px; border-bottom: 1px solid var(--rule); vertical-align: top; }
.report-sheet td:first-child { font-weight: 600; white-space: nowrap; }
.report-sheet tr:last-child td { border-bottom: 0; }
.report-sheet th:first-child, .report-sheet td:first-child { padding-left: 20px; }
.report-sheet th:last-child, .report-sheet td:last-child { padding-right: 20px; }
.report-sheet td.rec { min-width: 18rem; color: var(--ink-soft); }
.chip { display: inline-block; padding: 2px 9px; border-radius: 3px; font-size: 0.82rem; font-weight: 600; white-space: nowrap; }
.chip--ok { background: var(--ok-bg); color: var(--ok-fg); }
.chip--watch { background: var(--watch-bg); color: var(--watch-fg); }
.chip--act { background: var(--act-bg); color: var(--act-fg); }
.report-sheet footer { padding: 12px 20px; font-size: var(--step--1); color: var(--muted); border-top: 1px solid var(--rule); background: var(--panel); }
.report-aside h3 { margin-bottom: 10px; }
.report-aside p { color: var(--ink-soft); }
.report-aside p + p { margin-top: 0.8em; }
.report-aside .more { margin-top: 18px; }

/* Photograph galleries */
.gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(24px, 3vw, 40px); }
.gallery figure, .figure, .photos figure { margin: 0; }
.gallery img, .figure img, .photos img { display: block; width: 100%; background: var(--plate); border: 1px solid var(--rule); }
.gallery:not(.compact) img { aspect-ratio: 3 / 2; object-fit: cover; }
.gallery figcaption, .figure figcaption, .photos figcaption { margin-top: 12px; font-size: var(--step--1); color: var(--ink-soft); line-height: 1.5; max-width: 34rem; }
.gallery figcaption b, .figure figcaption b, .photos figcaption b { display: block; color: var(--ink); font-weight: 600; font-size: var(--step-0); margin-bottom: 2px; }
.gallery--three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.gallery.compact { gap: 18px; margin-top: 1.6em; }
.gallery.compact img { max-width: 300px; }
.gallery.compact figcaption { font-size: 0.82rem; }
.gallery.compact figcaption b { font-size: 0.92rem; }
.more { margin-top: 20px; font-weight: 500; }
@media (max-width: 760px) { .gallery, .gallery--three { grid-template-columns: minmax(0, 1fr); } .gallery figure { max-width: 624px; } }

.photos { display: grid; grid-template-columns: repeat(3, minmax(0, 320px)); gap: 28px; }
.photos img { width: auto; }
@media (max-width: 860px) { .photos { grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); } }

.plate { background: var(--plate); padding: 12px; border: 1px solid var(--rule); display: inline-block; max-width: 100%; }
.plate img { border: 0; display: block; }
.mark-plate { background: var(--plate); padding: 14px 16px; border: 1px solid var(--rule); width: 200px; }
.mark-plate--wide { width: 240px; }
.extract { background: var(--panel); padding: 16px 20px; font-size: 0.95rem; border-left: 3px solid var(--rule); }
.extract ul { margin: 0; padding-left: 1.1em; }
.extract li + li { margin-top: 0.3em; }

/* Sample-point drawing with steps */
.method { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(32px, 5vw, 72px); align-items: center; }
.method .steps { max-width: none; }
.method .more { margin-top: 24px; }
@media (max-width: 860px) { .method { grid-template-columns: minmax(0, 1fr); } .method .schematic { max-width: 560px; } }

.schematic { margin: 0; }
.schematic svg { display: block; width: 100%; height: auto; }
.schematic .line { fill: none; stroke: var(--ink); stroke-width: 1.6; stroke-linejoin: round; stroke-linecap: round; }
.schematic .thin { fill: none; stroke: var(--muted); stroke-width: 1; }
.schematic .solid { fill: var(--ground); stroke: var(--ink); stroke-width: 1.6; stroke-linejoin: round; }
.schematic .metal { fill: var(--panel); stroke: var(--ink); stroke-width: 1.6; stroke-linejoin: round; }
.schematic .air { fill: var(--panel); stroke: var(--ink); stroke-width: 1.6; }
.schematic .leader { fill: none; stroke: var(--muted); stroke-width: 1; stroke-dasharray: 2 3; }
.schematic .sample { fill: var(--flame); }
.schematic .reading { fill: var(--ground); stroke: var(--flame); stroke-width: 2.2; }
.schematic .label { fill: var(--ink); font-family: var(--font-body); font-size: 15px; font-weight: 600; }
.schematic .sub { fill: var(--muted); font-family: var(--font-body); font-size: 13.5px; }
.schematic figcaption { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 6px 20px; font-size: var(--step--1); color: var(--muted); }
.key { display: inline-flex; align-items: center; gap: 8px; }
.key i { display: inline-block; width: 11px; height: 11px; border-radius: 50%; }
.key .k-sample { background: var(--flame); }
.key .k-reading { border: 2px solid var(--flame); }


/* Steps */
.steps { list-style: none; padding: 0; margin: 0; counter-reset: step; max-width: 46rem; }
.steps li { counter-increment: step; display: grid; grid-template-columns: 52px minmax(0, 1fr); gap: 4px 18px; padding-block: 22px; border-top: 1px solid var(--rule); }
.steps li::before {
  content: counter(step); grid-row: span 2; font-family: var(--font-display); font-weight: 600;
  font-size: 1.6rem; color: var(--flame); line-height: 1.1; font-variant-numeric: tabular-nums;
}
.steps h3 { font-size: var(--step-1); }
.steps p { color: var(--ink-soft); }

/* Two-column page body with aside */
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 320px); gap: clamp(32px, 6vw, 80px); align-items: start; }
.split .aside { display: grid; gap: 28px; }
@media (max-width: 900px) { .split { grid-template-columns: minmax(0, 1fr); } .split .aside { grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); } }

/* History timeline */
.timeline { margin: 0; max-width: 46rem; }
.timeline div { display: grid; grid-template-columns: 96px minmax(0, 1fr); gap: 18px; padding-block: 16px; border-top: 1px solid var(--rule); }
.timeline dt { font-family: var(--font-display); font-weight: 600; font-size: 1.2rem; font-variant-numeric: tabular-nums; }
.timeline dd { margin: 0; color: var(--ink-soft); }

/* Offices */
.offices { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); gap: 28px; max-width: 46rem; }
.offices h3 { margin-bottom: 8px; }
.offices address { font-style: normal; color: var(--ink-soft); }

/* Resource lists */
.list-head { font-size: var(--step-2); margin-bottom: 12px; }
.files + .list-head { margin-top: 48px; }
.files { list-style: none; padding: 0; margin: 0; max-width: 46rem; }
.files li { padding-block: 14px; border-top: 1px solid var(--rule); display: grid; gap: 2px; }
.files a { font-weight: 500; }
.files span { font-size: var(--step--1); color: var(--muted); }

.faq { max-width: 46rem; }
.faq div { padding-block: 20px; border-top: 1px solid var(--rule); }
.faq dt { font-weight: 600; }
.faq dd { margin: 8px 0 0; color: var(--ink-soft); }

/* Bands with a heading and one button */
.client { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 20px 40px; }
.client h2 { font-size: var(--step-2); }
.client p { margin-top: 6px; color: var(--ink-soft); }

/* Closing contact band */
.contact-band { padding-block: clamp(48px, 6vw, 72px); }
.contact-band .wrap { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 28px 64px; align-items: center; }
.contact-band h2 { font-size: var(--step-3); }
.contact-band p { margin-top: 14px; color: var(--on-navy-soft); max-width: 34rem; }
.contact-band .email { font-family: var(--font-display); font-size: var(--step-2); text-decoration: none; display: inline-block; margin-top: 4px; }
.contact-band .actions { margin-top: 18px; }
@media (max-width: 760px) { .contact-band .wrap { grid-template-columns: minmax(0, 1fr); } }

/* Footer */
.site-footer { border-top: 1px solid var(--rule); padding-block: 40px 48px; font-size: var(--step--1); color: var(--muted); }
.site-footer .wrap { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr) minmax(0, 1fr); gap: 28px; }
.site-footer .logo { height: 36px; width: auto; }
.site-footer address { font-style: normal; margin-top: 14px; line-height: 1.6; }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; align-content: start; }
.site-footer a { color: var(--ink-soft); text-decoration: none; }
.site-footer a:hover { color: var(--flame); text-decoration: underline; }
.site-footer .legal { grid-column: 1 / -1; padding-top: 20px; border-top: 1px solid var(--rule); }
@media (max-width: 720px) { .site-footer .wrap { grid-template-columns: minmax(0, 1fr); } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
}
@media print {
  .site-header nav, .menu, .contact-band .actions { display: none; }
  .site-header { position: static; }
  .section--panel { background: none; }
  .band { background: none; color: var(--ink); }
}

/* Dilution figure */
.figure-plate { margin: 0; background: var(--plate); border: 1px solid var(--rule); padding: clamp(16px, 3vw, 28px); max-width: 52rem; }
.figure-plate .scroll { overflow-x: auto; }
.figure-plate svg { display: block; width: 100%; min-width: 560px; height: auto; }
.figure-plate figcaption { margin-top: 14px; font-size: var(--step--1); color: var(--muted); }
.dilution-figure text { font-family: var(--font-body); }
.dilution-figure .f-head { fill: var(--ink); font-size: 15px; font-weight: 600; }
.dilution-figure .f-label { fill: var(--ink); font-size: 14px; font-weight: 600; }
.dilution-figure .f-sub { fill: var(--muted); font-size: 13px; }
.dilution-figure .f-value { fill: var(--ink); font-size: 14px; font-variant-numeric: tabular-nums; }
.dilution-figure .f-strong { font-weight: 600; fill: var(--flame); }
.dilution-figure .f-cyl { fill: var(--navy); }
.dilution-figure .f-sys { fill: #9aa9b4; }
.dilution-figure .f-fuel { fill: var(--flame); }
.dilution-figure .f-outline { fill: none; stroke: var(--ink); stroke-width: 1; }
.dilution-figure .f-measured { fill: #c9d2d8; }
.dilution-figure .f-corrected { fill: var(--navy); }
.dilution-figure .f-rule { stroke: var(--rule); stroke-width: 1; }
@media (max-width: 600px) { .figure-plate { padding: 10px; } }

/* Service tiers */
.tiers { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(20px, 3vw, 36px); }
.tier-card { background: var(--plate); border: 1px solid var(--rule); border-top: 3px solid var(--ink); padding: 24px 26px 26px; }
.tier-card--full { border-top-color: var(--flame); }
.tier-card h3 { font-family: var(--font-display); font-size: var(--step-2); font-weight: 600; }
.tier-card .tier-line { margin-top: 8px; color: var(--ink-soft); }
.tier-card ul { margin: 16px 0 0; padding-left: 1.15em; color: var(--ink-soft); }
.tier-card li + li { margin-top: 6px; }
.tier-card .more { margin-top: 18px; }
.tier-card p + p { margin-top: 8px; }
.split .aside .tier-card p { color: var(--ink-soft); }
@media (max-width: 760px) { .tiers { grid-template-columns: minmax(0, 1fr); } }
.hero .lead--second { margin-top: 14px; font-size: var(--step-0); }
.tier-card li.plus { list-style: none; margin-left: -1.15em; font-weight: 600; color: var(--ink); }
.report-extract { margin: 0; background: var(--plate); border: 1px solid var(--rule); padding: clamp(12px, 2vw, 20px); max-width: 56rem; }
.report-extract img { display: block; width: 100%; height: auto; }
.report-extract figcaption { margin-top: 12px; font-size: var(--step--1); color: var(--ink-soft); line-height: 1.5; }
.prose .report-extract { margin-top: 1.4em; }
.extracts { display: grid; grid-template-columns: minmax(0, 1fr); gap: 28px; }
.report-extract--dense { min-width: 0; }
.report-extract--dense .scroll { overflow-x: auto; }
.report-extract--dense img { min-width: 720px; }
@media (max-width: 600px) { .report-extract { padding: 10px; } }

/* Fuel system drawing (shares the schematic classes) */
.schematic .pipe { fill: none; stroke: var(--ink); stroke-width: 2; stroke-linecap: round; }
.schematic .pump { fill: var(--ground); stroke: var(--ink); stroke-width: 1.6; }
.schematic .arrowhead { fill: var(--ink); }
.schematic .mark { fill: #fff; font-family: var(--font-body); font-size: 12px; font-weight: 600; }
.schematic .sub.small { font-size: 12px; }
.schematic--fuel { max-width: 56rem; }
.schematic--fuel svg { min-width: 560px; }
.schematic--fuel .scroll { overflow-x: auto; }
.fuel-note { margin-top: 24px; }
.fuel-photo { max-width: 56rem; margin-top: 32px; }
.schematic--fuel figcaption { margin-top: 12px; }