/*
 * UMLTD.UK — LOCKED DESIGN SYSTEM
 * Version: DESIGN-LOCK-1.0 — 15 September 2026
 *
 * This stylesheet is the visual source of truth for the UMLTD.UK site.
 * Do not restyle, replace, append competing overrides, alter the hero composition,
 * card geometry, typography scale, alternating section-header layout, background
 * treatment or colour system unless the site owner explicitly asks to UNLOCK DESIGN.
 * Content-only edits must preserve this file unchanged.
 */

:root {
  --bg: #080a0a;
  --bg-soft: #171c19;
  --bg-soft-2: #1d231f;
  --bg-mid: #101411;
  --panel: rgba(12, 15, 14, .72);
  --panel-solid: #111413;
  --text: #f3f4ee;
  --muted: #a8aea9;
  --soft: #cfd3ce;
  --line: rgba(255,255,255,.12);
  --line-strong: rgba(255,255,255,.18);
  --accent: #b9ff66;
  --accent-dark: #96d74c;
  --max: 1240px;
  --gutter: clamp(22px, 5vw, 72px);
  --radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--bg); }
body {
  margin: 0;
  min-height: 100%;
  color: var(--text);
  background: var(--bg);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }

.container {
  width: min(calc(100% - (var(--gutter) * 2)), var(--max));
  margin: 0 auto;
}

.site-header {
  position: relative;
  z-index: 50;
  border-bottom: 1px solid var(--line);
  background: rgba(8,10,10,.86);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.site-header.home-header {
  position: absolute;
  inset: 0 0 auto 0;
  background: linear-gradient(180deg, rgba(5,7,7,.78), rgba(5,7,7,.18));
  border-bottom-color: rgba(255,255,255,.08);
}
.nav-wrap {
  min-height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.brand { display: inline-flex; align-items: center; }
.brand img { display: block; width: clamp(170px, 15vw, 215px); height: auto; }
.nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.5vw, 34px);
  font-size: 13px;
  color: rgba(255,255,255,.72);
}
.nav a { position: relative; padding: 12px 0; }
.nav a:hover, .nav a[aria-current="page"] { color: #fff; }
.nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 4px;
  height: 1px;
  background: var(--accent);
}
.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 16px !important;
  border: 1px solid rgba(185,255,102,.32);
  border-radius: 999px;
  color: var(--text) !important;
  background: rgba(185,255,102,.07);
}
.nav-cta::after { display: none !important; }
.menu-button {
  display: none;
  appearance: none;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.04);
  color: var(--text);
  border-radius: 999px;
  padding: 9px 13px;
  cursor: pointer;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--accent);
  font-size: 11px;
  font-weight: 760;
  letter-spacing: .22em;
  text-transform: uppercase;
}

.hero-home {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(4,6,6,.94) 0%, rgba(4,6,6,.84) 29%, rgba(4,6,6,.48) 48%, rgba(4,6,6,.08) 72%, rgba(4,6,6,.025) 100%),
    linear-gradient(180deg, rgba(4,6,6,.28) 0%, rgba(4,6,6,.08) 48%, rgba(4,6,6,.72) 100%),
    url("background.png") center center / cover no-repeat;
}
.hero-home::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 130px;
  background: linear-gradient(to bottom, rgba(8,10,10,0), var(--bg));
  pointer-events: none;
}
.hero-home .container {
  position: relative;
  z-index: 2;
  padding-top: 154px;
  padding-bottom: 94px;
}
.hero-grid {
  display: block;
  width: 100%;
}
.hero-copy {
  width: min(880px, 68vw);
  max-width: none;
}
.hero-copy h1 {
  margin: 0;
  max-width: 880px;
  font-size: clamp(76px, 8.2vw, 126px);
  line-height: .88;
  letter-spacing: -.074em;
  font-weight: 790;
}
.hero-copy h1 span { display: block; color: #dfe3dd; font-weight: 590; }
.hero-copy .lead {
  max-width: 720px;
  margin: 30px 0 0;
  color: #d8ddd7;
  font-size: clamp(18px, 1.5vw, 22px);
  line-height: 1.5;
  letter-spacing: -.015em;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 30px; }
.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: rgba(255,255,255,.045);
  color: var(--text);
  font-size: 12px;
  font-weight: 720;
  transition: transform .15s ease, background .2s ease, border-color .2s ease;
}
.button:hover { transform: translateY(-1px); background: rgba(255,255,255,.075); }
.button.primary { background: var(--accent); color: #11140f; border-color: var(--accent); }
.button.primary:hover { background: #c5ff7c; }


.trust-strip { background: var(--bg); border-bottom: 1px solid var(--line); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.trust-item { padding: 24px 22px; border-right: 1px solid var(--line); }
.trust-item:first-child { padding-left: 0; }
.trust-item:last-child { border-right: 0; padding-right: 0; }
.trust-item strong { display: block; font-size: 13px; margin-bottom: 6px; }
.trust-item span { color: var(--muted); font-size: 12px; line-height: 1.5; }

.section { padding: clamp(86px, 9vw, 132px) 0; }
/* Interior pages step out of the hero into a lifted surface instead of another black block. */
.page-hero + .section:not(.alt) {
  background:
    radial-gradient(circle at 12% 0%, rgba(255,255,255,.025), transparent 30%),
    linear-gradient(180deg, #121713, var(--bg-mid));
  border-top: 1px solid rgba(255,255,255,.07);
}
.section.alt {
  position: relative;
  background:
    radial-gradient(circle at 82% 16%, rgba(185,255,102,.045), transparent 34%),
    linear-gradient(180deg, var(--bg-soft-2), var(--bg-soft));
  border-top: 1px solid rgba(255,255,255,.08);
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  column-gap: clamp(54px, 8vw, 120px);
  align-items: start;
  margin-bottom: 54px;
}
.section-head > div:first-child { max-width: 650px; }
.section-head > p { max-width: 650px; }
.section-head--left > div:first-child { grid-column: 1; grid-row: 1; }
.section-head--left > p { grid-column: 2; grid-row: 1; }
.section-head--right > div:first-child {
  grid-column: 2;
  grid-row: 1;
  justify-self: end;
  text-align: right;
}
.section-head--right > p {
  grid-column: 1;
  grid-row: 1;
  justify-self: start;
  padding-top: 4px;
}
.section-head h2 {
  margin: 0;
  font-size: clamp(40px, 4.7vw, 66px);
  line-height: .98;
  letter-spacing: -.05em;
}
.page-intro h1 {
  margin: 0;
  max-width: 980px;
  font-size: clamp(58px, 6.4vw, 94px);
  line-height: .94;
  letter-spacing: -.058em;
}
.section-head p { margin: 2px 0 0; max-width: 680px; color: var(--muted); font-size: 16px; line-height: 1.72; }

.solution-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card {
  min-height: 260px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255,255,255,.035), rgba(255,255,255,.012));
}
.card-index {
  display: block;
  color: var(--accent);
  font-size: clamp(26px, 2.6vw, 38px);
  line-height: 1;
  font-weight: 650;
  letter-spacing: -.03em;
  text-transform: none;
  opacity: .95;
}
.card h3 { margin: 34px 0 11px; font-size: 22px; letter-spacing: -.025em; }
.card p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.65; }
.card a { display: inline-block; margin-top: 20px; color: var(--soft); font-size: 12px; border-bottom: 1px solid rgba(255,255,255,.22); }

.usecase-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); }
.usecase { padding: 30px 34px 30px 0; border-bottom: 1px solid var(--line); }
.usecase:nth-child(even) { padding-left: 34px; border-left: 1px solid var(--line); }
.usecase h3 { margin: 0 0 9px; font-size: 18px; }
.usecase p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.65; }

.process { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.process-step { padding: 25px 24px 27px; border-right: 1px solid var(--line); }
.process-step:first-child { padding-left: 0; }
.process-step:last-child { border-right: 0; padding-right: 0; }
.process-step b { color: var(--accent); font-size: 10px; letter-spacing: .18em; }
.process-step h3 { margin: 26px 0 8px; font-size: 17px; }
.process-step p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.6; }

.cta-panel {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: center;
  padding: 36px 40px;
  border: 1px solid rgba(185,255,102,.22);
  border-radius: var(--radius);
  background: linear-gradient(110deg, rgba(185,255,102,.06), rgba(255,255,255,.018));
}
.cta-panel h2 { margin: 0; font-size: clamp(30px, 3.6vw, 48px); letter-spacing: -.04em; }
.cta-panel p { margin: 10px 0 0; color: var(--muted); max-width: 720px; line-height: 1.65; }

.page-hero {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: end;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(5,7,7,.96), rgba(5,7,7,.73) 50%, rgba(5,7,7,.28)),
    linear-gradient(180deg, rgba(5,7,7,.16), rgba(5,7,7,.80)),
    url("background.png") center 42% / cover no-repeat;
}
.page-hero::after { content: ""; position: absolute; inset: auto 0 0 0; height: 100px; background: linear-gradient(to bottom, transparent, var(--bg)); }
.page-hero .container { position: relative; z-index: 2; padding-top: 118px; padding-bottom: 86px; }
.page-intro { max-width: 1020px; }
.page-intro p { margin: 25px 0 0; max-width: 760px; color: #d5dad4; font-size: clamp(17px, 1.4vw, 20px); line-height: 1.62; }

.detail-list { border-top: 1px solid var(--line); }
.detail-row { display: grid; grid-template-columns: .55fr 1.45fr; gap: 60px; padding: 42px 0; border-bottom: 1px solid var(--line); }
.detail-row h2 { margin: 0; font-size: 25px; letter-spacing: -.03em; }
.detail-row h2 small { display: block; margin-bottom: 12px; color: var(--accent); font-size: 10px; letter-spacing: .18em; text-transform: uppercase; }
.detail-copy p { margin: 0 0 16px; color: var(--muted); line-height: 1.72; }
.detail-copy p:last-child { margin-bottom: 0; }
.detail-copy ul { margin: 19px 0 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(2, 1fr); gap: 9px 24px; }
.detail-copy li { position: relative; padding-left: 15px; color: var(--soft); font-size: 13px; line-height: 1.5; }
.detail-copy li::before { content: ""; position: absolute; left: 0; top: .65em; width: 4px; height: 4px; border-radius: 50%; background: var(--accent); }

.about-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 80px; align-items: start; }
.about-grid h2 { margin: 0; font-size: clamp(36px, 4.4vw, 58px); letter-spacing: -.05em; line-height: 1; }
.about-copy p { margin: 0 0 20px; color: var(--muted); font-size: 16px; line-height: 1.75; }
.values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 44px; }
.value { padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); }
.value h3 { margin: 0 0 8px; font-size: 16px; }
.value p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.6; }
.company-facts { margin-top: 34px; border-top: 1px solid var(--line); }
.fact { display: grid; grid-template-columns: 190px 1fr; gap: 24px; padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 13px; }
.fact span:first-child { color: var(--muted); }

.contact-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 72px; align-items: start; }
.contact-details { display: grid; gap: 22px; }
.contact-item { padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.contact-item small { display: block; margin-bottom: 6px; color: var(--muted); font-size: 10px; letter-spacing: .14em; text-transform: uppercase; }
.contact-item strong, .contact-item a { font-size: 17px; font-weight: 600; }
.form-panel { padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255,255,255,.025); }
form { display: grid; gap: 14px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
label { display: grid; gap: 7px; color: rgba(255,255,255,.62); font-size: 10px; font-weight: 690; letter-spacing: .09em; text-transform: uppercase; }
input, textarea {
  width: 100%;
  border: 1px solid rgba(255,255,255,.13);
  border-radius: 9px;
  outline: none;
  background: rgba(255,255,255,.035);
  color: var(--text);
  padding: 11px 12px;
  font-size: 14px;
}
input { height: 42px; }
textarea { min-height: 150px; resize: vertical; line-height: 1.5; }
input:focus, textarea:focus { border-color: rgba(185,255,102,.58); background: rgba(255,255,255,.052); }
.form-actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.form-note { color: var(--muted); font-size: 11px; }
.form-message { display: none; margin: 0; padding: 10px 12px; border: 1px solid var(--line); font-size: 12px; line-height: 1.5; }
.form-message.show { display: block; }
.form-message.success { border-color: rgba(185,255,102,.32); color: #e7f6d2; }
.form-message.error { border-color: rgba(255,120,120,.3); color: #ffd5d5; }

.site-footer { border-top: 1px solid var(--line); background: #070909; }
.footer-main { display: grid; grid-template-columns: 1.2fr .7fr .8fr; gap: 60px; padding: 54px 0 42px; }
.footer-brand img { width: 185px; }
.footer-brand p { margin: 16px 0 0; max-width: 410px; color: var(--muted); font-size: 13px; line-height: 1.65; }
.footer-col h4 { margin: 0 0 14px; color: rgba(255,255,255,.52); font-size: 10px; letter-spacing: .16em; text-transform: uppercase; }
.footer-col { display: grid; align-content: start; gap: 8px; color: var(--soft); font-size: 13px; line-height: 1.55; }
.footer-col a:hover { color: #fff; }
.footer-legal { border-top: 1px solid var(--line); padding: 18px 0 24px; display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; color: rgba(255,255,255,.42); font-size: 10px; line-height: 1.55; }

@media (max-width: 980px) {
  .nav { display: none; position: absolute; top: 78px; left: var(--gutter); right: var(--gutter); padding: 16px; flex-direction: column; align-items: stretch; gap: 2px; border: 1px solid var(--line); border-radius: 14px; background: rgba(8,10,10,.97); box-shadow: 0 20px 50px rgba(0,0,0,.28); }
  .nav.open { display: flex; }
  .nav a { padding: 12px 10px; }
  .nav a[aria-current="page"]::after { display: none; }
  .menu-button { display: inline-flex; }
  .section-head, .about-grid, .contact-layout { grid-template-columns: 1fr; }
  .section-head { row-gap: 20px; }
  .section-head--left > div:first-child,
  .section-head--left > p,
  .section-head--right > div:first-child,
  .section-head--right > p {
    grid-column: 1;
    grid-row: auto;
    justify-self: start;
    text-align: left;
    padding-top: 0;
  }
  .solution-grid { grid-template-columns: repeat(2, 1fr); }
  .process { grid-template-columns: repeat(2, 1fr); }
  .process-step:nth-child(2) { border-right: 0; }
  .process-step:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .process-step:nth-child(3) { padding-left: 0; }
  .detail-row { grid-template-columns: 1fr; gap: 20px; }
  .values { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 680px) {
  :root { --gutter: 20px; }
  .nav-wrap { min-height: 78px; }
  .brand img { width: 168px; }
  .hero-home { background-position: 62% center; }
  .hero-home .container { padding-top: 126px; padding-bottom: 66px; }
  .hero-copy { width: 100%; }
  .hero-copy h1 { font-size: clamp(58px, 16vw, 82px); line-height: .9; }
  .hero-copy .lead { font-size: 17px; }
  .trust-grid, .solution-grid, .usecase-grid, .process { grid-template-columns: 1fr; }
  .trust-item { padding: 18px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .trust-item:last-child { border-bottom: 0; }
  .card { min-height: auto; }
  .card h3 { margin-top: 26px; }
  .usecase, .usecase:nth-child(even) { padding: 24px 0; border-left: 0; }
  .process-step, .process-step:first-child, .process-step:nth-child(3), .process-step:last-child { padding: 22px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .process-step:last-child { border-bottom: 0; }
  .cta-panel { grid-template-columns: 1fr; padding: 28px 24px; }
  .page-hero { min-height: 520px; }
  .page-hero .container { padding-top: 92px; padding-bottom: 66px; }
  .page-intro p { font-size: 16px; }
  .detail-copy ul { grid-template-columns: 1fr; }
  .fact { grid-template-columns: 1fr; gap: 4px; }
  .form-row { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; gap: 34px; }
  .footer-brand { grid-column: auto; }
}


/* Expanded corporate content */
.feature-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.feature-link {
  display: block;
  position: relative;
  min-height: 310px;
  padding: 30px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(185,255,102,.055), rgba(255,255,255,.012) 55%),
    rgba(255,255,255,.015);
}
.feature-link::after {
  content: "↗";
  position: absolute;
  right: 28px;
  top: 27px;
  color: var(--accent);
  font-size: 20px;
}
.feature-link small {
  color: var(--accent);
  font-size: 10px;
  font-weight: 740;
  letter-spacing: .18em;
  text-transform: uppercase;
}
.feature-link h3 {
  max-width: 500px;
  margin: 72px 0 13px;
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.04;
  letter-spacing: -.04em;
}
.feature-link p {
  max-width: 580px;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}
.feature-link:hover {
  border-color: rgba(185,255,102,.26);
  background:
    linear-gradient(135deg, rgba(185,255,102,.075), rgba(255,255,255,.018) 55%),
    rgba(255,255,255,.02);
}

.industry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.industry-card {
  min-height: 250px;
  padding: 25px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255,255,255,.018);
}
.industry-card .industry-no {
  color: var(--accent);
  font-size: 10px;
  font-weight: 760;
  letter-spacing: .17em;
}
.industry-card h3 {
  margin: 56px 0 10px;
  font-size: 20px;
  letter-spacing: -.025em;
}
.industry-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.68;
}

.challenge-list {
  border-top: 1px solid var(--line);
}
.challenge-row {
  display: grid;
  grid-template-columns: .45fr 1.55fr;
  gap: 54px;
  padding: 27px 0;
  border-bottom: 1px solid var(--line);
}
.challenge-row h3 {
  margin: 0;
  font-size: 17px;
  letter-spacing: -.015em;
}
.challenge-row p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.assurance-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.assurance-card {
  min-height: 245px;
  padding: 25px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.01));
}
.assurance-card b {
  color: var(--accent);
  font-size: 10px;
  letter-spacing: .16em;
}
.assurance-card h3 {
  margin: 42px 0 10px;
  font-size: 19px;
}
.assurance-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.68;
}

.lifecycle {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.lifecycle-step {
  padding: 25px 20px 27px;
  border-right: 1px solid var(--line);
}
.lifecycle-step:first-child { padding-left: 0; }
.lifecycle-step:last-child { border-right: 0; padding-right: 0; }
.lifecycle-step small {
  color: var(--accent);
  font-size: 10px;
  letter-spacing: .16em;
}
.lifecycle-step h3 {
  margin: 25px 0 8px;
  font-size: 16px;
}
.lifecycle-step p {
  margin: 0;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.62;
}

.principles {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
}
.principle {
  padding: 28px 34px 28px 0;
  border-bottom: 1px solid var(--line);
}
.principle:nth-child(even) {
  padding-left: 34px;
  border-left: 1px solid var(--line);
}
.principle h3 {
  margin: 0 0 9px;
  font-size: 18px;
}
.principle p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.68;
}

.note-panel {
  padding: 24px 28px;
  border-left: 2px solid var(--accent);
  background: rgba(185,255,102,.035);
}
.note-panel p {
  margin: 0;
  color: var(--soft);
  font-size: 14px;
  line-height: 1.7;
}

@media (max-width: 980px) {
  .industry-grid,
  .assurance-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .lifecycle {
    grid-template-columns: repeat(2, 1fr);
  }
  .lifecycle-step {
    border-bottom: 1px solid var(--line);
  }
  .lifecycle-step:nth-child(even) {
    border-right: 0;
  }
  .lifecycle-step:last-child {
    grid-column: 1 / -1;
    border-bottom: 0;
  }
}

@media (max-width: 680px) {
  .feature-links,
  .industry-grid,
  .assurance-grid,
  .principles,
  .lifecycle {
    grid-template-columns: 1fr;
  }
  .feature-link { min-height: 260px; }
  .feature-link h3 { margin-top: 52px; }
  .challenge-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .principle,
  .principle:nth-child(even) {
    padding: 24px 0;
    border-left: 0;
  }
  .lifecycle-step,
  .lifecycle-step:first-child,
  .lifecycle-step:last-child {
    padding: 22px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .lifecycle-step:last-child {
    grid-column: auto;
    border-bottom: 0;
  }
}


/* =========================================================
   DESIGN-LOCK-1.1 — LIST RHYTHM + INTERACTION ENHANCEMENT
   Explicitly approved: 15 Sep 2026
   Applies site-wide where repeated rows/cards are present.
   Do not alter without an explicit design-unlock/change request.
   ========================================================= */

/* Alternating surfaces for long repeated detail lists */
.detail-list .detail-row {
  position: relative;
  margin: 0;
  padding: 42px 28px;
  border-bottom: 1px solid var(--line);
  transition:
    transform .22s ease,
    background-color .22s ease,
    border-color .22s ease,
    box-shadow .22s ease;
}
.detail-list .detail-row:nth-child(odd) {
  background: rgba(255,255,255,.018);
}
.detail-list .detail-row:nth-child(even) {
  background: rgba(185,255,102,.026);
}
.detail-list .detail-row:hover {
  transform: translateY(-5px);
  border-color: rgba(185,255,102,.24);
  box-shadow: 0 14px 34px rgba(0,0,0,.18);
  z-index: 2;
}

/* Repeated cards across the site */
.card,
.industry-card,
.assurance-card,
.value,
.feature-link {
  transition:
    transform .22s ease,
    background-color .22s ease,
    border-color .22s ease,
    box-shadow .22s ease;
}
.card:nth-child(even),
.industry-card:nth-child(even),
.assurance-card:nth-child(even),
.value:nth-child(even) {
  background-color: rgba(185,255,102,.022);
}
.card:nth-child(odd),
.industry-card:nth-child(odd),
.assurance-card:nth-child(odd),
.value:nth-child(odd) {
  background-color: rgba(255,255,255,.022);
}
.card:hover,
.industry-card:hover,
.assurance-card:hover,
.value:hover,
.feature-link:hover {
  transform: translateY(-5px);
  border-color: rgba(185,255,102,.24);
  box-shadow: 0 14px 34px rgba(0,0,0,.18);
}

/* Alternating row-style content blocks */
.challenge-row,
.usecase,
.principle,
.process-step,
.lifecycle-step {
  transition:
    transform .2s ease,
    background-color .2s ease,
    border-color .2s ease,
    box-shadow .2s ease;
}
.challenge-row:nth-child(even),
.usecase:nth-child(even),
.principle:nth-child(even),
.process-step:nth-child(even),
.lifecycle-step:nth-child(even) {
  background: rgba(185,255,102,.020);
}
.challenge-row:nth-child(odd),
.usecase:nth-child(odd),
.principle:nth-child(odd),
.process-step:nth-child(odd),
.lifecycle-step:nth-child(odd) {
  background: rgba(255,255,255,.014);
}
.challenge-row:hover,
.usecase:hover,
.principle:hover,
.process-step:hover,
.lifecycle-step:hover {
  transform: translateY(-4px);
  border-color: rgba(185,255,102,.20);
  box-shadow: 0 12px 28px rgba(0,0,0,.14);
  z-index: 2;
}

/* Improve visual grouping without turning rows into cards */
.challenge-row,
.usecase,
.principle {
  padding-left: 22px;
  padding-right: 22px;
}
.process-step,
.lifecycle-step {
  padding-left: 20px;
  padding-right: 20px;
}

/* Respect reduced-motion preference */
@media (prefers-reduced-motion: reduce) {
  .detail-list .detail-row,
  .card,
  .industry-card,
  .assurance-card,
  .value,
  .feature-link,
  .challenge-row,
  .usecase,
  .principle,
  .process-step,
  .lifecycle-step {
    transition: none;
  }

  .detail-list .detail-row:hover,
  .card:hover,
  .industry-card:hover,
  .assurance-card:hover,
  .value:hover,
  .feature-link:hover,
  .challenge-row:hover,
  .usecase:hover,
  .principle:hover,
  .process-step:hover,
  .lifecycle-step:hover {
    transform: none;
  }
}

@media (max-width: 680px) {
  .detail-list .detail-row {
    padding: 30px 18px;
  }
  .challenge-row,
  .usecase,
  .principle,
  .process-step,
  .lifecycle-step {
    padding-left: 14px;
    padding-right: 14px;
  }
}