/* ==========================================================================
   IPGS OT & Critical Networks — site stylesheet
   Brand: navy #133861 · teal #2883a2 · ink #243855 · grey #5D6B81
   Fonts: Barlow (display) · DM Sans (body)
   ========================================================================== */

:root {
  --navy-950: #071630;
  --navy-900: #0b1f3a;
  --navy-800: #10294a;
  --navy-700: #133861;
  --navy-600: #1c4a7c;
  --navy-500: #1179b8;
  --teal-600: #1f6d87;
  --teal-500: #23758f; /* brand teal #2883a2 nudged darker so white-on-teal and teal-on-white/soft text meet WCAG AA (4.9:1 or better) */
  --teal-400: #35a3c4;
  --cyan-300: #5fd3f0;
  --cyan-200: #a6e8f7;
  --amber-400: #f2b34c;
  --ink-900: #243855;
  --ink-700: #3b4a63;
  --ink-600: #5d6b81;
  --ink-500: #7a889e; /* lightest grey that keeps 3:1 on white for large decorative numerals */
  --ink-400: #8e9bb0;
  --ink-300: #c9d2de;
  --line: #e3e8ee;
  --bg: #ffffff;
  --bg-soft: #f3f7fa;
  --bg-tint: #e9f3f8;

  --font-display: "Barlow", "DM Sans", system-ui, sans-serif;
  --font-body: "DM Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 2px rgba(11, 31, 58, .06), 0 1px 3px rgba(11, 31, 58, .08);
  --shadow: 0 8px 24px rgba(11, 31, 58, .10);
  --shadow-lg: 0 20px 48px rgba(11, 31, 58, .18);

  --container: 1200px;
  --gutter: 16px;
  --header-h: 72px;
}

/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink-900);
  background: var(--bg);
  overflow-x: hidden;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--teal-500); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.1;
  margin: 0 0 .5em;
  color: var(--navy-700);
  letter-spacing: -.01em;
}
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 800; }
h2 { font-size: clamp(1.8rem, 3.6vw, 2.6rem); font-weight: 700; }
h3 { font-size: 1.35rem; font-weight: 700; }
h4 { font-size: 1.1rem; font-weight: 700; }
p { margin: 0 0 1em; }
ul, ol { margin: 0 0 1em; padding-left: 1.25em; }
button { font: inherit; cursor: pointer; }
:focus-visible { outline: 3px solid var(--cyan-300); outline-offset: 2px; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

.skip { position: absolute; left: -999px; top: 8px; background: var(--amber-400); color: var(--navy-900); padding: .6rem 1rem; border-radius: var(--radius-sm); z-index: 999; font-weight: 700; }
.skip:focus { left: 8px; }

.fw-list { list-style: none; padding: 0 !important; }
.fw-list li { margin-bottom: .45em !important; font-size: .9rem !important; }
.fw-list strong { color: var(--cyan-300); font-family: var(--font-display); letter-spacing: .02em; }
.service-row-body .fw-list strong { color: var(--navy-700); }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
section[id], div[id] { scroll-margin-top: var(--header-h); }
.container-narrow { max-width: 860px; }

/* ---------- Typography helpers ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: .6em;
  font-family: var(--font-display); font-weight: 600; font-size: .85rem;
  letter-spacing: .14em; text-transform: uppercase; color: var(--teal-500);
  margin-bottom: 1rem;
}
.eyebrow::before { content: ""; width: 28px; height: 2px; background: currentColor; border-radius: 2px; }
.lede { font-size: 1.2rem; color: var(--ink-600); max-width: 60ch; }
.section-head { max-width: 760px; margin-bottom: 2.5rem; }
.section-head p { color: var(--ink-600); font-size: 1.1rem; }
.text-center { text-align: center; }
.text-center .section-head { margin-left: auto; margin-right: auto; }
.text-center .lede { margin-left: auto; margin-right: auto; }
.muted { color: var(--ink-600); }
.small { font-size: .9rem; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  padding: .8em 1.4em; border-radius: var(--radius-sm);
  font-family: var(--font-display); font-weight: 600; font-size: 1rem; letter-spacing: .02em;
  text-decoration: none; border: 2px solid transparent; transition: transform .15s, box-shadow .15s, background .15s, color .15s;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn svg { width: 18px; height: 18px; }
.btn-primary { background: var(--teal-500); color: #fff; box-shadow: 0 6px 18px rgba(40, 131, 162, .35); }
.btn-primary:hover { background: var(--teal-400); color: #fff; }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .45); }
.btn-ghost:hover { border-color: #fff; color: #fff; background: rgba(255, 255, 255, .06); }
.btn-dark { background: var(--navy-700); color: #fff; }
.btn-dark:hover { background: var(--navy-600); color: #fff; }
.btn-outline { background: transparent; color: var(--navy-700); border-color: var(--navy-700); }
.btn-outline:hover { background: var(--navy-700); color: #fff; }
.btn-sm { padding: .55em 1em; font-size: .9rem; }
.btn-group { display: flex; flex-wrap: wrap; gap: .75rem; }

.link-arrow {
  display: inline-flex; align-items: center; gap: .4em; font-weight: 600;
  font-family: var(--font-display); color: var(--teal-500);
}
.link-arrow svg { width: 18px; height: 18px; transition: transform .15s; }
.link-arrow:hover svg { transform: translateX(3px); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  height: var(--header-h);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}
/* The blurred backdrop lives on a pseudo-element: backdrop-filter on the header
   itself would make it the containing block for the fixed-position mobile nav. */
.site-header::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: rgba(7, 22, 48, .78);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  transition: background .2s;
}
.site-header.is-scrolled::before { background: rgba(7, 22, 48, .96); }
.site-header .container { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }

.brand { display: flex; align-items: center; gap: .75rem; color: #fff; text-decoration: none; }
.brand:hover { text-decoration: none; }
.brand-logo { height: 42px; width: auto; }
.brand-text { display: flex; flex-direction: column; line-height: 1.05; padding-left: .75rem; border-left: 1px solid rgba(255, 255, 255, .25); }
.brand-sub { font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--cyan-200); font-weight: 600; max-width: 9em; }

.nav { display: flex; align-items: center; gap: .25rem; }
.nav > ul { display: flex; align-items: center; gap: .15rem; list-style: none; margin: 0; padding: 0; }
.nav a, .nav .nav-toggle {
  display: inline-flex; align-items: center; gap: .3em;
  padding: .55em .8em; border-radius: var(--radius-sm);
  color: rgba(255, 255, 255, .85); font-weight: 500; font-size: .95rem;
  background: none; border: 0; text-decoration: none; white-space: nowrap;
}
.nav a:hover, .nav .nav-toggle:hover, .nav li.is-active > a { color: #fff; background: rgba(255, 255, 255, .08); text-decoration: none; }
.nav li.is-active > a { color: var(--cyan-300); }
.nav .nav-toggle svg { width: 14px; height: 14px; transition: transform .15s; }
.nav .has-sub { position: relative; }
.nav .sub {
  position: absolute; top: calc(100% + 8px); left: 0; min-width: 260px;
  background: #fff; color: var(--ink-900); border-radius: var(--radius);
  box-shadow: var(--shadow-lg); padding: .5rem; list-style: none; margin: 0;
  opacity: 0; visibility: hidden; transform: translateY(6px); transition: opacity .15s, transform .15s, visibility .15s;
}
.nav .has-sub.is-open .sub, .nav .has-sub:focus-within .sub { opacity: 1; visibility: visible; transform: none; }
.nav .has-sub.is-open .nav-toggle svg { transform: rotate(180deg); }
.nav .sub a { display: flex; gap: .7rem; align-items: center; color: var(--ink-900); padding: .6rem .7rem; border-radius: var(--radius-sm); }
.nav .sub a:hover { background: var(--bg-soft); color: var(--navy-700); }
.nav .sub a svg { width: 22px; height: 22px; color: var(--teal-500); flex: none; }
.nav .sub a span small { display: block; color: var(--ink-600); font-size: .78rem; font-weight: 400; }
.nav .nav-cta { margin-left: .5rem; }
.nav-burger {
  display: none; background: none; border: 0; color: #fff; padding: .4rem; border-radius: var(--radius-sm);
}
.nav-burger svg { width: 28px; height: 28px; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden; color: #fff;
  background: radial-gradient(1200px 600px at 80% 10%, rgba(40, 131, 162, .35), transparent 60%),
              radial-gradient(900px 500px at 10% 90%, rgba(17, 121, 184, .25), transparent 60%),
              linear-gradient(160deg, var(--navy-950) 0%, var(--navy-800) 55%, var(--navy-700) 100%);
  margin-top: calc(-1 * var(--header-h));
  padding-top: var(--header-h);
}
.hero-bg { position: absolute; inset: 0; opacity: .35; pointer-events: none; }
.hero-bg svg { width: 100%; height: 100%; }
.hero > .container {
  position: relative; display: grid; grid-template-columns: .95fr 1.05fr; gap: 3rem; align-items: center;
  min-height: clamp(520px, calc(100vh - var(--header-h)), 720px); padding-top: 4rem; padding-bottom: 4rem;
}
.hero h1 { color: #fff; margin-bottom: 1.2rem; }
.hero h1 .accent { color: var(--cyan-300); }
.hero .lede { color: rgba(255, 255, 255, .82); font-size: 1.25rem; margin-bottom: 2rem; }
.hero .eyebrow { color: var(--cyan-300); }
.hero-visual { position: relative; perspective: 1000px; }
.hero-visual svg { width: 100%; height: auto; filter: drop-shadow(0 20px 40px rgba(0, 0, 0, .35)); transition: transform .35s ease-out; will-change: transform; }
/* Entrance: headline, sub-line, buttons and the diagram rise in sequence on load */
@keyframes heroUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }
.hero h1, .hero .lede, .hero .btn-group, .hero-visual { animation: heroUp .8s cubic-bezier(.2, .7, .2, 1) both; }
.hero .lede { animation-delay: .12s; }
.hero .btn-group { animation-delay: .24s; }
.hero-visual { animation-delay: .3s; animation-duration: 1s; }
/* Sector labels inside the levels diagram: Railway / Energy toggle */
.hero-visual .lbl { transition: opacity .45s ease; }
.hero[data-sector="rail"] .lbl-energy, .hero[data-sector="energy"] .lbl-rail { opacity: 0; }
.hero-sector { display: flex; justify-content: flex-end; gap: .4rem; margin-top: .9rem; }
.hero-sector button {
  background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .25); color: rgba(255, 255, 255, .8);
  font-family: var(--font-display); font-weight: 700; font-size: .82rem; letter-spacing: .04em; padding: .4em .9em; border-radius: 999px; cursor: pointer;
  transition: background .2s, color .2s, border-color .2s;
}
.hero-sector button:hover { color: #fff; border-color: rgba(255, 255, 255, .6); }
.hero-sector button[aria-pressed="true"] { background: var(--cyan-300); border-color: var(--cyan-300); color: var(--navy-950); }
.hero-sector button:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }

.proof-strip {
  position: relative; background: rgba(255, 255, 255, .04); border-top: 1px solid rgba(255, 255, 255, .08);
  color: #fff;
}
.proof-strip .container { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; padding-top: 1.4rem; padding-bottom: 1.4rem; }
.proof-item { display: flex; gap: .8rem; align-items: flex-start; font-size: .95rem; color: rgba(255, 255, 255, .85); }
.proof-item svg { width: 26px; height: 26px; flex: none; color: var(--cyan-300); margin-top: .1rem; }
.proof-item strong { display: block; color: #fff; font-family: var(--font-display); font-size: 1.02rem; }

/* Optional hero photograph: add class="has-photo" to .hero and save assets/img/hero.jpg */
.hero.has-photo::before {
  content: ""; position: absolute; inset: 0; background: url("../img/hero.jpg") center / cover no-repeat; opacity: .28; pointer-events: none;
}
.hero.has-photo .hero-bg { opacity: .18; }

/* ---------- Certification band ---------- */
.cert-band { background: #fff; border-bottom: 1px solid var(--line); }
.cert-band .container { display: grid; grid-template-columns: 1.2fr auto; gap: 2.5rem; align-items: center; padding-top: 2.5rem; padding-bottom: 2.5rem; }
.cert-band h2 { font-size: clamp(1.4rem, 2.6vw, 2rem); margin-bottom: .5rem; }
.cert-band p { color: var(--ink-600); margin: 0; max-width: 58ch; }
.cert-badges { display: flex; gap: 1rem; flex-wrap: wrap; justify-content: flex-end; }
.cert-badges img { width: 96px; height: 96px; object-fit: contain; }
@media (max-width: 960px) { .cert-band .container { grid-template-columns: 1fr; } .cert-badges { justify-content: flex-start; } .cert-badges img { width: 80px; height: 80px; } }

/* ---------- Three attacks ---------- */
.card.attack { position: relative; padding-top: 2.2rem; display: flex; flex-direction: column; }
.card.attack .attack-no { position: absolute; top: 1rem; right: 1.2rem; font-family: var(--font-display); font-weight: 800; font-size: 2rem; color: var(--ink-500); line-height: 1; }
.card.attack h3 { font-size: 1.2rem; }
.card.attack > p { flex: 1; }
.card.attack .stop { margin-top: 1.1rem; padding-top: 1rem; border-top: 2px solid var(--amber-400); font-size: .95rem; color: var(--ink-700); }
.card.attack .stop strong { color: var(--navy-700); font-family: var(--font-display); }
.card.attack .stop .fr { display: block; margin-top: .5rem; font-family: var(--font-display); font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; color: var(--teal-500); font-weight: 700; }

/* ---------- Rules band ---------- */
.rules-band { background: var(--navy-950); color: #fff; padding: 4rem 0; }
.rules-band .eyebrow { color: var(--cyan-300); }
.rules { list-style: none; counter-reset: rule; padding: 0; margin: 0; display: grid; gap: .25rem; }
.rules li { counter-increment: rule; font-family: var(--font-display); font-weight: 700; font-size: clamp(1.3rem, 2.6vw, 2rem); line-height: 1.25; padding: 1rem 0 1rem 3.5rem; position: relative; border-top: 1px solid rgba(255, 255, 255, .1); }
.rules li::before { content: "0" counter(rule); position: absolute; left: 0; top: 1.15rem; font-size: .9rem; letter-spacing: .12em; color: var(--amber-400); }
.rules li span { display: block; margin-top: .35rem; font-family: var(--font-body); font-weight: 400; font-size: 1rem; line-height: 1.5; color: rgba(255, 255, 255, .72); max-width: 62ch; }
@media (max-width: 640px) { .rules li { padding-left: 2.6rem; } }

/* ---------- Sector "what we do for you" blocks ---------- */
.for-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
.for-block { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 1.6rem; }
.for-block h3 { font-size: 1.25rem; margin-bottom: .5rem; }
.for-block p { color: var(--ink-700); font-size: .97rem; margin-bottom: .8rem; }
.for-block .check-list { margin-bottom: 1rem; font-size: .95rem; }
.for-block .when { font-family: var(--font-display); font-weight: 600; font-size: 1.05rem; color: var(--navy-700); margin-bottom: 1rem; }
.we-you { list-style: none; padding: 0; margin: 0 0 1rem; display: grid; gap: .8rem; }
.we-you li { color: var(--ink-700); font-size: .95rem; padding-left: 1rem; border-left: 3px solid var(--line); }
.we-you li strong { display: block; font-family: var(--font-display); font-size: .74rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--teal-500); margin-bottom: .2rem; }
.for-block .link-arrow { font-size: .9rem; }
@media (max-width: 640px) { .for-grid { grid-template-columns: 1fr; } }

/* ---------- Sections ---------- */
.section { padding: 5.5rem 0; }
.section-sm { padding: 3.5rem 0; }
.section-soft { background: var(--bg-soft); }
.section-tint { background: var(--bg-tint); }
.section-dark { background: linear-gradient(160deg, var(--navy-900), var(--navy-700)); color: rgba(255, 255, 255, .85); }
.section-dark h2, .section-dark h3, .section-dark h4 { color: #fff; }
.section-dark .eyebrow { color: var(--cyan-300); }
.section-dark .section-head p, .section-dark .lede { color: rgba(255, 255, 255, .78); }
.section-dark a:not(.btn) { color: var(--cyan-300); }

.grid { display: grid; gap: 1.5rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.split > * { min-width: 0; }

/* ---------- Cards ---------- */
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.6rem; box-shadow: var(--shadow-sm); transition: transform .2s, box-shadow .2s, border-color .2s;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--ink-300); }
.card .icon {
  width: 48px; height: 48px; border-radius: 10px; display: grid; place-items: center;
  background: var(--bg-tint); color: var(--teal-500); margin-bottom: 1.1rem;
}
.card .icon svg { width: 26px; height: 26px; }
.card h3 { font-size: 1.2rem; }
.card p { color: var(--ink-600); font-size: .97rem; margin-bottom: 0; }
.card p + .link-arrow { margin-top: 1rem; }
a.card { color: inherit; display: block; }
a.card:hover { text-decoration: none; }
a.card .check-list li { color: var(--ink-700); font-size: .95rem; }

.section-dark .card { background: rgba(255, 255, 255, .05); border-color: rgba(255, 255, 255, .12); box-shadow: none; }
.section-dark .card h3 { color: #fff; }
.section-dark .card p { color: rgba(255, 255, 255, .72); }
.section-dark .card .icon { background: rgba(95, 211, 240, .12); color: var(--cyan-300); }

/* ---------- Sector tiles ---------- */
.sector-tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.sector-tile {
  position: relative; display: flex; flex-direction: column; justify-content: flex-end; min-height: 230px;
  padding: 1.5rem; border-radius: var(--radius); color: #fff; overflow: hidden; text-decoration: none;
  background: linear-gradient(160deg, var(--navy-600), var(--navy-900));
  box-shadow: var(--shadow-sm); transition: transform .2s, box-shadow .2s;
}
.sector-tile:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); text-decoration: none; color: #fff; }
.sector-tile::before {
  content: ""; position: absolute; inset: 0; opacity: .18; pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.35) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.35) 1px, transparent 1px);
  background-size: 28px 28px; transform: perspective(600px) rotateX(55deg) translateY(-40%); transform-origin: top;
}
.sector-tile .icon {
  position: absolute; top: 1.3rem; left: 1.5rem; width: 54px; height: 54px; border-radius: 12px;
  display: grid; place-items: center; background: rgba(255, 255, 255, .1); color: var(--cyan-300);
}
.sector-tile .icon svg { width: 30px; height: 30px; }
.sector-tile h3 { color: #fff; font-size: 1.35rem; margin-bottom: .3rem; }
.sector-tile p { font-size: .93rem; color: rgba(255, 255, 255, .75); margin: 0 0 .8rem; }
.sector-tile .link-arrow { color: var(--cyan-300); font-size: .9rem; }
.sector-tile.is-rail { background: linear-gradient(160deg, var(--teal-600), var(--navy-900)); grid-column: span 2; }
.sector-tile.is-rail h3 { font-size: 1.7rem; }
.sector-tile .tag {
  position: absolute; top: 1.3rem; right: 1.3rem; font-family: var(--font-display); font-size: .75rem;
  letter-spacing: .12em; text-transform: uppercase; background: var(--amber-400); color: var(--navy-900);
  padding: .3em .7em; border-radius: 999px; font-weight: 700;
}

/* ---------- Service explorer ---------- */
.explorer-controls { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; justify-content: space-between; margin-bottom: 1.75rem; }
.phase-tabs { display: inline-flex; background: var(--bg-soft); border: 1px solid var(--line); border-radius: 999px; padding: 4px; gap: 2px; flex-wrap: wrap; }
.phase-tabs button {
  border: 0; background: none; padding: .5em 1.1em; border-radius: 999px; color: var(--ink-600);
  font-family: var(--font-display); font-weight: 600; letter-spacing: .02em; font-size: .95rem;
}
.phase-tabs button[aria-selected="true"] { background: var(--navy-700); color: #fff; }
.phase-tabs button:hover:not([aria-selected="true"]) { color: var(--navy-700); }
.chips { display: flex; flex-wrap: wrap; gap: .4rem; align-items: center; }
.chips .chips-label { font-size: .85rem; color: var(--ink-600); margin-right: .25rem; }
.chip {
  border: 1px solid var(--line); background: #fff; color: var(--ink-700); border-radius: 999px;
  padding: .35em .85em; font-size: .85rem; font-weight: 500; display: inline-flex; gap: .4em; align-items: center;
}
.chip svg { width: 15px; height: 15px; }
.chip[aria-pressed="true"] { background: var(--teal-500); border-color: var(--teal-500); color: #fff; }
.chip:hover:not([aria-pressed="true"]) { border-color: var(--teal-500); color: var(--teal-500); }

.explorer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.service-card {
  text-align: left; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.25rem; display: flex; flex-direction: column; gap: .6rem; min-height: 190px;
  transition: transform .15s, box-shadow .15s, border-color .15s; position: relative;
}
.service-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: var(--teal-400); }
.service-card[aria-pressed="true"] { border-color: var(--teal-500); box-shadow: 0 0 0 3px rgba(40, 131, 162, .18), var(--shadow); }
.service-card .phase-dot {
  font-family: var(--font-display); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; font-weight: 700;
  color: var(--teal-500); display: inline-flex; align-items: center; gap: .4em;
}
.service-card .phase-dot::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
.service-card .svc-icon { width: 36px; height: 36px; color: var(--navy-700); }
.service-card .svc-icon svg { width: 36px; height: 36px; }
.service-card h3 { font-size: 1.08rem; margin: 0; line-height: 1.2; }
.service-card p { font-size: .9rem; color: var(--ink-600); margin: 0; flex: 1; }
.service-card .more { font-family: var(--font-display); font-weight: 600; font-size: .85rem; color: var(--teal-500); display: inline-flex; align-items: center; gap: .3em; }
.service-card .more svg { width: 16px; height: 16px; }
.service-card.is-hidden { display: none; }
.phase-assess .phase-dot { color: #2883a2; }
.phase-design .phase-dot { color: #1179b8; }
.phase-secure .phase-dot { color: #1c6b4f; }
.phase-operate .phase-dot { color: #7a5a0f; }
.phase-respond .phase-dot { color: #a1312f; }

.explorer-empty { padding: 2rem; text-align: center; color: var(--ink-600); border: 1px dashed var(--line); border-radius: var(--radius); grid-column: 1 / -1; }

/* Compact phase list (homepage) */
.svc-list { display: grid; gap: .5rem; }
.svc-list-head { display: flex; flex-wrap: wrap; gap: .4rem 1rem; align-items: baseline; padding: .2rem 0 .6rem; color: var(--ink-600); font-size: .95rem; }
.svc-list-head strong { font-family: var(--font-display); color: var(--navy-700); font-size: 1.15rem; letter-spacing: .02em; }
.svc-item {
  display: grid; grid-template-columns: 36px 1fr 20px; gap: 1rem; align-items: center; text-align: left;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: .9rem 1.1rem;
  transition: border-color .15s, box-shadow .15s;
}
.svc-item:hover { border-color: var(--teal-400); box-shadow: var(--shadow); }
.svc-item[aria-pressed="true"] { border-color: var(--teal-500); box-shadow: 0 0 0 3px rgba(40, 131, 162, .18); }
.svc-item .svc-icon { width: 32px; height: 32px; color: var(--navy-700); }
.svc-item .svc-icon svg { width: 32px; height: 32px; }
.svc-item strong { display: block; font-family: var(--font-display); font-size: 1.05rem; color: var(--navy-700); line-height: 1.2; }
.svc-item > span > span { font-size: .9rem; color: var(--ink-600); }
.svc-item .chev { width: 20px; height: 20px; color: var(--teal-500); }
@media (max-width: 640px) { .svc-item { grid-template-columns: 1fr 20px; } .svc-item .svc-icon { display: none; } }

.explorer-detail {
  margin-top: 1.25rem; background: var(--navy-900); color: rgba(255, 255, 255, .85); border-radius: var(--radius-lg);
  padding: 2rem; display: grid; grid-template-columns: 1.4fr 1fr; gap: 2.5rem; position: relative;
  animation: fadeUp .25s ease-out;
}
.explorer-detail[hidden] { display: none; }
.explorer-detail h3 { color: #fff; font-size: 1.6rem; margin-bottom: .6rem; }
.explorer-detail .phase-dot { color: var(--cyan-300); font-family: var(--font-display); font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; font-weight: 700; }
.explorer-detail h4 { color: var(--cyan-300); font-size: .85rem; letter-spacing: .12em; text-transform: uppercase; margin: 1.2rem 0 .5rem; }
.explorer-detail ul { padding-left: 1.1em; margin: 0; }
.explorer-detail li { margin-bottom: .3em; font-size: .95rem; }
.explorer-detail .std-list { display: flex; flex-wrap: wrap; gap: .4rem; list-style: none; padding: 0; }
.explorer-detail .std-list li { background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .14); border-radius: 999px; padding: .25em .7em; font-size: .82rem; margin: 0; }
.explorer-detail .sector-links { display: flex; flex-wrap: wrap; gap: .4rem; }
.explorer-detail .sector-links a { color: var(--cyan-300); font-size: .9rem; border-bottom: 1px dotted currentColor; }
.explorer-detail .close {
  position: absolute; top: 1rem; right: 1rem; background: rgba(255, 255, 255, .08); border: 0; color: #fff;
  width: 36px; height: 36px; border-radius: 50%; display: grid; place-items: center;
}
.explorer-detail .close svg { width: 18px; height: 18px; }
.explorer-detail .btn-group { margin-top: 1.5rem; }

/* Full services page listing */
.service-phase { padding: 3rem 0; border-top: 1px solid var(--line); scroll-margin-top: calc(var(--header-h) + 70px); }
.service-phase:first-of-type { border-top: 0; }
.service-phase-head { display: grid; grid-template-columns: 1fr 2fr; gap: 2rem; margin-bottom: 2rem; align-items: start; }
.service-phase-head .phase-num { font-family: var(--font-display); font-size: 3rem; font-weight: 800; color: var(--ink-300); line-height: 1; }
.service-phase-head h2 { margin: .2rem 0 .3rem; }
.service-phase-head p { color: var(--ink-600); margin: 0; }
.service-rows { display: grid; gap: .9rem; }
.service-row { border: 1px solid var(--line); border-radius: var(--radius); background: #fff; scroll-margin-top: calc(var(--header-h) + 80px); overflow: hidden; }
.service-row.is-hidden { display: none; }
.service-row > button {
  width: 100%; text-align: left; background: none; border: 0; padding: 1.2rem 1.4rem;
  display: grid; grid-template-columns: 44px 1fr auto; gap: 1rem; align-items: center;
}
.service-row > button .svc-icon { width: 40px; height: 40px; color: var(--navy-700); }
.service-row > button .svc-icon svg { width: 40px; height: 40px; }
.service-row > button h3 { margin: 0 0 .15rem; font-size: 1.15rem; }
.service-row > button p { margin: 0; color: var(--ink-600); font-size: .95rem; }
.service-row > button .chev { width: 22px; height: 22px; color: var(--teal-500); transition: transform .2s; }
.service-row[aria-expanded="true"] > button .chev { transform: rotate(180deg); }
.service-row[aria-expanded="true"] { border-color: var(--teal-400); box-shadow: var(--shadow); }
.service-row-body { display: none; padding: 0 1.4rem 1.6rem 1.4rem; border-top: 1px solid var(--line); }
.service-row[aria-expanded="true"] .service-row-body { display: grid; grid-template-columns: 1.4fr 1fr; gap: 2rem; padding-top: 1.4rem; animation: fadeUp .2s ease-out; }
.service-row-body h4 { font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; color: var(--teal-500); margin: 1rem 0 .4rem; }
.service-row-body h4:first-child { margin-top: 0; }
.service-row-body ul { margin: 0; padding-left: 1.1em; font-size: .95rem; }
.service-row-body li { margin-bottom: .25em; }
.service-row-body .std-list { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: .4rem; }
.service-row-body .std-list li { background: var(--bg-tint); border-radius: 999px; padding: .25em .7em; font-size: .82rem; color: var(--navy-700); margin: 0; }
.service-row-body .sector-links { display: flex; flex-wrap: wrap; gap: .5rem .9rem; font-size: .92rem; }

.filter-bar { position: sticky; top: var(--header-h); z-index: 50; background: rgba(255, 255, 255, .94); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); padding: .8rem 0; }
.filter-bar .explorer-controls { margin-bottom: 0; }

/* Sector services list */
.sector-services { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.sector-services a.card { display: grid; grid-template-columns: 40px 1fr; gap: 1rem; align-items: start; padding: 1.2rem; }
.sector-services a.card .svc-icon { width: 40px; height: 40px; color: var(--navy-700); }
.sector-services a.card h3 { font-size: 1.05rem; margin-bottom: .2rem; }
.sector-services a.card p { font-size: .9rem; }

/* ---------- Standards strip ---------- */
.standards-strip { display: flex; flex-wrap: wrap; gap: .6rem; justify-content: center; }
.standard {
  display: inline-flex; flex-direction: column; align-items: center; justify-content: center; min-width: 150px;
  padding: .8rem 1.2rem; border: 1px solid var(--line); border-radius: var(--radius-sm); background: #fff;
  font-family: var(--font-display);
}
.standard strong { font-size: 1.05rem; color: var(--navy-700); letter-spacing: .02em; }
.standard span { font-size: .75rem; color: var(--ink-600); letter-spacing: .06em; text-transform: uppercase; }
.section-dark .standard { background: rgba(255, 255, 255, .05); border-color: rgba(255, 255, 255, .14); }
.section-dark .standard strong { color: #fff; }
.section-dark .standard span { color: rgba(255, 255, 255, .6); }

/* ---------- Steps / timeline ---------- */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1rem; counter-reset: step; }
.step { position: relative; padding: 1.4rem 1.2rem 1.2rem; border-radius: var(--radius); background: #fff; border: 1px solid var(--line); }
.step::before {
  counter-increment: step; content: "0" counter(step);
  font-family: var(--font-display); font-weight: 800; font-size: 1.8rem; color: var(--teal-400); line-height: 1; display: block; margin-bottom: .6rem;
}
.step h3 { font-size: 1.1rem; margin-bottom: .3rem; }
.step p { font-size: .92rem; color: var(--ink-600); margin: 0; }
.section-dark .step { background: rgba(255, 255, 255, .05); border-color: rgba(255, 255, 255, .12); }
.steps-3 { grid-template-columns: repeat(3, 1fr); }
.section-dark .step p { color: rgba(255, 255, 255, .72); }

/* ---------- Feature list ---------- */
.feature-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 1.1rem; }
.feature-list li { display: grid; grid-template-columns: 40px 1fr; gap: .9rem; align-items: start; }
.feature-list li svg { width: 40px; height: 40px; color: var(--teal-500); padding: 8px; background: var(--bg-tint); border-radius: 10px; }
.feature-list strong { display: block; font-family: var(--font-display); font-size: 1.08rem; color: var(--navy-700); }
.feature-list span { color: var(--ink-600); font-size: .95rem; }
.section-dark .feature-list li svg { background: rgba(95, 211, 240, .12); color: var(--cyan-300); }
.section-dark .feature-list strong { color: #fff; }
.section-dark .feature-list span { color: rgba(255, 255, 255, .72); }

.check-list { list-style: none; padding: 0; margin: 0 0 1.5rem; display: grid; gap: .55rem; }
.check-list li { padding-left: 1.8rem; position: relative; }
.check-list li::before {
  content: ""; position: absolute; left: 0; top: .35em; width: 18px; height: 18px; border-radius: 50%;
  background: var(--teal-500) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5L20 7'/%3E%3C/svg%3E") center / 11px no-repeat;
}

/* ---------- Stat tiles ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.stat { padding: 1.5rem; border-radius: var(--radius); background: rgba(255, 255, 255, .05); border: 1px solid rgba(255, 255, 255, .12); }
.stat strong { display: block; font-family: var(--font-display); font-size: 2.4rem; font-weight: 800; color: var(--cyan-300); line-height: 1; margin-bottom: .4rem; }
.stat strong small { font-size: .6em; font-weight: 700; vertical-align: top; }
.stat span { color: rgba(255, 255, 255, .78); font-size: .95rem; }

/* ---------- Diagram figures ---------- */
.figure { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 1.5rem; box-shadow: var(--shadow-sm); }
.figure svg { width: 100%; height: auto; }
.figure figcaption { font-size: .88rem; color: var(--ink-600); margin-top: 1rem; text-align: center; }
.section-dark .figure { background: rgba(255, 255, 255, .04); border-color: rgba(255, 255, 255, .12); }
.section-dark .figure figcaption { color: rgba(255, 255, 255, .65); }

/* ---------- Page hero (inner pages) ---------- */
.page-hero {
  position: relative; color: #fff; overflow: hidden;
  background: radial-gradient(900px 400px at 85% 0%, rgba(40, 131, 162, .4), transparent 60%),
              linear-gradient(160deg, var(--navy-950), var(--navy-700));
  margin-top: calc(-1 * var(--header-h)); padding-top: calc(var(--header-h) + 4.5rem); padding-bottom: 4rem;
}
.page-hero .hero-bg { opacity: .25; }
.page-hero .container { position: relative; }
.page-hero h1 { color: #fff; max-width: 18ch; }
.page-hero .lede { color: rgba(255, 255, 255, .82); }
.page-hero .eyebrow { color: var(--cyan-300); }
.page-hero.has-visual .container { display: grid; grid-template-columns: 1.2fr .8fr; gap: 3rem; align-items: center; }
.page-hero .hero-icon { width: 180px; height: 180px; color: var(--cyan-300); opacity: .9; margin-left: auto; }
/* Photo hero: add has-photo plus a photo-* class to the section. The photo sits under a navy gradient so the text stays readable.
   Image paths live here (not inline) so they resolve the same way in every browser. */
.page-hero.photo-rail { --hero-photo: url("../img/hero-rail.jpg"); }
.page-hero.photo-energy { --hero-photo: url("../img/hero-energy.jpg"); }
.page-hero.has-photo { min-height: 460px; display: flex; align-items: center; }
.page-hero.has-photo > .container { width: 100%; z-index: 1; }
.page-hero.has-photo::before { content: ""; position: absolute; inset: 0; background: var(--hero-photo) center / cover no-repeat; opacity: .55; pointer-events: none; }
.page-hero.has-photo::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(90deg, rgba(7, 22, 48, .92) 0%, rgba(7, 22, 48, .72) 50%, rgba(7, 22, 48, .25) 100%); }
.page-hero.has-photo .hero-icon { display: none; }
@media (max-width: 960px) { .page-hero.has-photo::after { background: linear-gradient(180deg, rgba(7, 22, 48, .9) 0%, rgba(7, 22, 48, .75) 100%); } }
@media print { .page-hero.has-photo::before, .page-hero.has-photo::after { display: none; } }
.crumbs { display: flex; gap: .5rem; font-size: .85rem; color: rgba(255, 255, 255, .6); margin-bottom: 1.5rem; list-style: none; padding: 0; flex-wrap: wrap; }
.crumbs a { color: rgba(255, 255, 255, .8); }
.crumbs li + li::before { content: "/"; margin-right: .5rem; color: rgba(255, 255, 255, .35); }

/* ---------- Prose ---------- */
.prose { max-width: 70ch; }
.prose h2 { margin-top: 2.2rem; font-size: 1.7rem; }
.prose h3 { margin-top: 1.6rem; }
.prose p, .prose li { color: var(--ink-700); }
.prose blockquote { margin: 1.5rem 0; padding: 1rem 1.4rem; border-left: 4px solid var(--teal-500); background: var(--bg-soft); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; font-size: 1.1rem; color: var(--navy-700); }
.prose blockquote p { margin: 0; color: inherit; }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
table.table { width: 100%; border-collapse: collapse; font-size: .95rem; min-width: 640px; }
table.table th, table.table td { text-align: left; padding: .85rem 1rem; border-bottom: 1px solid var(--line); vertical-align: top; }
table.table th { background: var(--bg-soft); font-family: var(--font-display); font-weight: 700; color: var(--navy-700); font-size: .9rem; letter-spacing: .02em; }
table.table tr:last-child td { border-bottom: 0; }
table.table td:first-child { font-weight: 600; color: var(--navy-700); }

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(135deg, var(--teal-600), var(--navy-700) 70%); color: #fff;
  border-radius: var(--radius-lg); padding: 3rem; display: grid; grid-template-columns: 1.5fr 1fr; gap: 2rem; align-items: center;
  position: relative; overflow: hidden;
}
.cta-band::after {
  content: ""; position: absolute; right: -80px; top: -80px; width: 320px; height: 320px; border-radius: 50%;
  border: 40px solid rgba(255, 255, 255, .06); pointer-events: none;
}
.cta-band h2 { color: #fff; margin-bottom: .5rem; }
.cta-band p { color: rgba(255, 255, 255, .82); margin: 0; }
.cta-band .btn-group { justify-content: flex-end; position: relative; }

/* ---------- Insights ---------- */
.insight-card { display: flex; flex-direction: column; }
.insight-card .meta { font-size: .8rem; color: var(--ink-600); letter-spacing: .04em; text-transform: uppercase; font-family: var(--font-display); font-weight: 600; margin-bottom: .6rem; }
.insight-card .meta b { color: var(--teal-500); }
.insight-card h3 { font-size: 1.15rem; }
.insight-card details { margin-top: .8rem; }
.insight-card summary { cursor: pointer; color: var(--teal-500); font-weight: 600; font-family: var(--font-display); list-style: none; display: inline-flex; align-items: center; gap: .3em; }
.insight-card summary::-webkit-details-marker { display: none; }
.insight-card summary::after { content: "+"; font-size: 1.1em; }
.insight-card details[open] summary::after { content: "−"; }
.insight-card details p { margin-top: .8rem; color: var(--ink-700); }

/* ---------- Offices ---------- */
.offices { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1rem; }
.office { padding: 1.3rem; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; font-size: .92rem; }
.office h3 { font-size: 1rem; margin-bottom: .2rem; }
.office .country { font-family: var(--font-display); font-size: .75rem; letter-spacing: .12em; text-transform: uppercase; color: var(--teal-500); font-weight: 700; margin-bottom: .6rem; display: block; }
.office address { font-style: normal; color: var(--ink-600); line-height: 1.5; margin-bottom: .5rem; }
.office a { display: block; font-size: .9rem; }

/* ---------- Forms ---------- */
.form { display: grid; gap: 1rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.field label { display: block; font-family: var(--font-display); font-weight: 600; font-size: .9rem; margin-bottom: .3rem; color: var(--navy-700); }
.field input, .field select, .field textarea {
  width: 100%; padding: .75rem .9rem; border: 1px solid var(--ink-300); border-radius: var(--radius-sm); font: inherit; color: var(--ink-900); background: #fff;
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--teal-500); outline: 3px solid rgba(40, 131, 162, .2); }
.field textarea { min-height: 140px; resize: vertical; }
.form-note { font-size: .85rem; color: var(--ink-600); }
.form-status { padding: .9rem 1rem; border-radius: var(--radius-sm); background: var(--bg-tint); color: var(--navy-700); font-size: .95rem; }
.form-status[hidden] { display: none; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-950); color: rgba(255, 255, 255, .72); padding: 4rem 0 2rem; font-size: .93rem; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr 1.2fr; gap: 2.5rem; margin-bottom: 3rem; }
.site-footer h3 { color: #fff; font-size: .85rem; letter-spacing: .12em; text-transform: uppercase; margin-bottom: 1rem; }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: .45rem; }
.site-footer a { color: rgba(255, 255, 255, .72); }
.site-footer a:hover { color: #fff; }
.site-footer .brand { margin-bottom: 1rem; }
.site-footer .footer-blurb { max-width: 36ch; }
.footer-offices { font-size: .85rem; display: grid; gap: .5rem; }
.footer-offices strong { color: #fff; display: block; font-family: var(--font-display); }
.footer-accred { border-top: 1px solid rgba(255, 255, 255, .1); padding: 1.6rem 0; display: grid; grid-template-columns: auto 1fr; gap: .4rem 2rem; align-items: center; margin-bottom: .5rem; }
.footer-accred h3 { margin: 0; }
.footer-accred .small { grid-column: 1 / -1; margin: 0; color: rgba(255, 255, 255, .55); }
.accred-badges { display: flex; flex-wrap: wrap; gap: .8rem; }
.accred-badges img { height: 64px; width: 64px; object-fit: contain; background: #fff; border-radius: 8px; padding: 3px; }
@media (max-width: 640px) { .footer-accred { grid-template-columns: 1fr; } }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .1); padding-top: 1.5rem; display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; align-items: center; font-size: .85rem; }
.socials { display: flex; gap: .5rem; }
.socials a { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 50%; background: rgba(255, 255, 255, .06); }
.socials a:hover { background: var(--teal-500); color: #fff; }
.socials svg { width: 18px; height: 18px; }

/* ---------- Team ---------- */
.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }
.person { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 1.5rem; }
.person .avatar {
  width: 88px; height: 88px; border-radius: 50%; display: grid; place-items: center; margin-bottom: 1rem;
  background: linear-gradient(160deg, var(--teal-500), var(--navy-700)); color: #fff;
  font-family: var(--font-display); font-weight: 700; font-size: 1.6rem; letter-spacing: .04em; overflow: hidden;
}
.person .avatar img { width: 100%; height: 100%; object-fit: cover; }
.person h3 { font-size: 1.15rem; margin-bottom: .15rem; }
.person .role { font-family: var(--font-display); font-weight: 600; font-size: .85rem; letter-spacing: .06em; text-transform: uppercase; color: var(--teal-500); margin-bottom: .7rem; display: block; }
.person p { font-size: .93rem; color: var(--ink-600); margin: 0; }
.person .tags { display: flex; flex-wrap: wrap; gap: .3rem; margin-top: .8rem; }
.person .tags span { font-size: .75rem; background: var(--bg-tint); color: var(--navy-700); padding: .2em .6em; border-radius: 999px; }

/* ---------- Case studies ---------- */
.case { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 2rem; display: grid; grid-template-columns: 240px 1fr; gap: 2.5rem; scroll-margin-top: calc(var(--header-h) + 24px); }
.case + .case { margin-top: 1.5rem; }
.case .case-meta { font-size: .9rem; color: var(--ink-600); display: grid; gap: .9rem; align-content: start; }
.case .case-meta strong { display: block; font-family: var(--font-display); font-size: .75rem; letter-spacing: .12em; text-transform: uppercase; color: var(--teal-500); margin-bottom: .15rem; }
.case h2 { font-size: 1.5rem; margin-bottom: .4rem; }
.case .summary { font-size: 1.05rem; color: var(--ink-700); }
.case h3 { font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; color: var(--teal-500); margin: 1.2rem 0 .4rem; }
.case p, .case li { color: var(--ink-700); font-size: .97rem; }
.case ul { margin: 0; padding-left: 1.1em; }
.case .std-list { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: .4rem; }
.case .std-list li { background: var(--bg-tint); border-radius: 999px; padding: .25em .7em; font-size: .82rem; color: var(--navy-700); }
.case-card .meta { font-family: var(--font-display); font-weight: 600; font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-600); margin-bottom: .5rem; }
.case-card .meta b { color: var(--teal-500); }

/* Placeholder content the team must replace before launch */
.placeholder { border-style: dashed !important; border-color: var(--teal-400) !important; position: relative; }
.placeholder::after {
  content: "Placeholder: replace before launch"; position: absolute; top: -.7rem; right: 1rem;
  font-family: var(--font-display); font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; font-weight: 700;
  background: var(--amber-400); color: var(--navy-900); padding: .2em .6em; border-radius: 999px;
}
.placeholder .ph { color: var(--ink-400); font-style: italic; }

/* ---------- Print (save any page as a PDF capability pack) ---------- */
@media print {
  @page { margin: 16mm; }
  body { font-size: 11pt; color: #111; }
  .site-header, .nav-burger, .filter-bar, .cta-band, .skip, .hero-bg, .hero-visual, .socials, .explorer-controls, .explorer-detail, .placeholder::after { display: none !important; }
  .hero, .page-hero, .section-dark, .proof-strip, .sector-tile, .explorer-detail { background: #fff !important; color: #111 !important; }
  .hero *, .page-hero *, .section-dark *, .proof-strip *, .sector-tile * { color: #111 !important; }
  .hero, .page-hero { margin-top: 0; padding-top: 0; }
  .hero > .container { min-height: 0; grid-template-columns: 1fr; padding: 0; }
  .section { padding: 1.5rem 0; }
  .reveal { opacity: 1 !important; transform: none !important; }
  .card, .step, .stat, .person, .case, .office, .figure, .standard, .service-row, .service-card { box-shadow: none !important; border: 1px solid #bbb !important; break-inside: avoid; }
  .service-row-body { display: grid !important; grid-template-columns: 1fr 1fr; gap: 1rem; padding-top: 1rem; border-top: 1px solid #ddd; }
  .service-row > button .chev { display: none; }
  .explorer-grid { grid-template-columns: 1fr 1fr; }
  .service-card.is-hidden, .service-row.is-hidden { display: none !important; }
  a { color: #111; text-decoration: none; }
  .btn { display: none; }
  .site-footer { background: #fff !important; color: #111 !important; border-top: 1px solid #bbb; padding: 1rem 0; }
  .site-footer * { color: #111 !important; }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
}

/* ---------- Animations ---------- */
@keyframes fadeUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
@keyframes dash { to { stroke-dashoffset: -40; } }
@keyframes pulse { 0%, 100% { opacity: .35; } 50% { opacity: 1; } }
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
.flow-line { stroke-dasharray: 8 8; animation: dash 1.6s linear infinite; }
.node-pulse { animation: pulse 2.4s ease-in-out infinite; }

/* ---------- Homepage phase interactive (Assess / Design / Build) ---------- */
.phase-show { display: grid; grid-template-columns: 1.15fr .85fr; gap: 2rem 2.5rem; align-items: start; }
.ph-tabs { grid-column: 1 / -1; display: flex; gap: .25rem; border-bottom: 1px solid var(--line); }
.ph-tabs button {
  position: relative; background: none; border: 0; padding: .8rem 1.3rem .95rem; cursor: pointer;
  font-family: var(--font-display); font-weight: 700; font-size: 1.1rem; color: var(--ink-600);
  display: inline-flex; align-items: center; gap: .6rem; border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}
.ph-tabs button:hover { color: var(--navy-700); background: rgba(19, 56, 97, .04); }
.ph-tabs button:focus-visible { outline: 2px solid var(--teal-500); outline-offset: -2px; }
.ph-tabs .ph-num { font-size: .78rem; letter-spacing: .12em; color: var(--teal-500); }
.ph-tabs button[aria-selected="true"] { color: var(--navy-700); }
.ph-tabs button::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 3px; background: var(--navy-700); transform: scaleX(0); transform-origin: left; transition: transform .3s ease; }
.ph-tabs button[aria-selected="true"]::after { transform: scaleX(1); }
.ph-bar { position: absolute; left: 0; bottom: -1px; height: 3px; width: 0; background: var(--cyan-300); z-index: 1; }
@keyframes phBar { from { width: 0; } to { width: 100%; } }
.phase-show.is-auto .ph-tabs button[aria-selected="true"] .ph-bar { animation: phBar 6s linear both; }
.ph-stage {
  position: relative; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-lg);
  background: radial-gradient(700px 400px at 85% 0%, rgba(40, 131, 162, .45), transparent 60%), linear-gradient(160deg, var(--navy-950), var(--navy-700));
}
.ph-stage svg { display: block; width: 100%; height: auto; }
.ph-caption { padding: .85rem 1.2rem; border-top: 1px solid rgba(255, 255, 255, .1); font-family: var(--font-display); font-size: .78rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--cyan-300); min-height: 2.9rem; }
.ph-layer { opacity: 0; transition: opacity .55s ease; }
.phase-show[data-phase="assess"] .ph-l-assess,
.phase-show[data-phase="design"] .ph-l-design,
.phase-show[data-phase="secure"] .ph-l-build { opacity: 1; }
.ph-panel { animation: fadeUp .45s ease both; }
.ph-panel h3 { font-size: 1.5rem; line-height: 1.2; margin-bottom: 1rem; }
.ph-panel .check-list { margin-bottom: 1.2rem; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .flow-line, .node-pulse { animation: none; }
  .motion { display: none; }
  .hero h1, .hero .lede, .hero .btn-group, .hero-visual, .ph-panel { animation: none; }
  .ph-layer { transition: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .explorer-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; }
  .footer-grid > :last-child { grid-column: 1 / -1; }
  .offices { grid-template-columns: repeat(3, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 960px) {
  .nav-burger { display: inline-flex; }
  .nav {
    position: fixed; inset: var(--header-h) 0 0 0; background: var(--navy-950); padding: 1rem var(--gutter) 2rem;
    overflow-y: auto; display: none; flex-direction: column; align-items: stretch;
  }
  .nav.is-open { display: flex; }
  .nav > ul { flex-direction: column; align-items: stretch; gap: 0; }
  .nav a, .nav .nav-toggle { width: 100%; justify-content: space-between; padding: .9rem .6rem; font-size: 1.05rem; border-bottom: 1px solid rgba(255, 255, 255, .08); border-radius: 0; }
  .nav .sub { position: static; opacity: 1; visibility: visible; transform: none; background: rgba(255, 255, 255, .04); box-shadow: none; display: none; border-radius: 0; padding: 0 0 0 1rem; }
  .nav .has-sub.is-open .sub { display: block; }
  .nav .sub a { color: rgba(255, 255, 255, .85); }
  .nav .sub a:hover { background: rgba(255, 255, 255, .06); color: #fff; }
  .nav .sub a span small { color: rgba(255, 255, 255, .5); }
  .nav .nav-cta { margin: 1rem 0 0; }
  .nav .nav-cta .btn { width: 100%; }
  .hero > .container { grid-template-columns: 1fr; min-height: 0; padding-top: 3rem; padding-bottom: 3rem; }
  .hero-visual { max-width: 520px; margin: 0 auto; }
  .proof-strip .container { grid-template-columns: 1fr 1fr; }
  .split, .page-hero.has-visual .container { grid-template-columns: 1fr; gap: 2.5rem; }
  .page-hero .hero-icon { display: none; }
  .grid-3, .grid-4, .team-grid { grid-template-columns: repeat(2, 1fr); }
  .sector-tiles { grid-template-columns: repeat(2, 1fr); }
  .case { grid-template-columns: 1fr; gap: 1.2rem; }
  .explorer-detail { grid-template-columns: 1fr; }
  .service-row[aria-expanded="true"] .service-row-body { grid-template-columns: 1fr; }
  .service-phase-head { grid-template-columns: 1fr; gap: .5rem; }
  .phase-show { grid-template-columns: 1fr; gap: 1.5rem; }
  .steps-3 { grid-template-columns: 1fr; }
  .cta-band { grid-template-columns: 1fr; }
  .cta-band .btn-group { justify-content: flex-start; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .section { padding: 4rem 0; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .grid-2, .grid-3, .grid-4, .sector-tiles, .explorer-grid, .sector-services, .offices, .steps, .stats, .form-row, .team-grid { grid-template-columns: 1fr; }
  .case { padding: 1.4rem; }
  .sector-tile.is-rail { grid-column: auto; }
  .proof-strip .container { grid-template-columns: 1fr; }
  .brand-text { display: none; }
  .footer-grid { grid-template-columns: 1fr; gap: 1.8rem; }
  .cta-band { padding: 2rem 1.5rem; }
  .explorer-detail { padding: 1.5rem; }
  .service-row > button { grid-template-columns: 1fr auto; }
  .service-row > button .svc-icon { display: none; }
  .filter-bar { position: static; }
  .phase-tabs { width: 100%; }
  .phase-tabs button { flex: 1; padding: .5em .6em; font-size: .85rem; }
  .ph-tabs button { flex: 1; justify-content: center; padding: .7rem .4rem .85rem; font-size: 1rem; }
  .ph-tabs .ph-num { display: none; }
  .ph-caption { font-size: .7rem; }
  .btn { white-space: normal; }
}