/* Trackways Rail Limited */
:root {
  --c-platform: #EEF0F0;
  --c-white: #FFFFFF;
  --c-green: #1F4D3A;
  --c-green-dark: #163A2B;
  --c-green-soft: #D8E4DD;
  --c-ink: #1B2A22;
  --c-steel: #56626A;
  --c-amber: #F0A202;
  --c-line: #C9CFCF;
  --c-on-dark: #D6E2DB;
  --c-error: #A3231A;

  --f-display: "Red Hat Display", "Helvetica Neue", Arial, sans-serif;
  --f-body: "Overpass", system-ui, -apple-system, "Segoe UI", Arial, sans-serif;

  --s-1: 0.25rem; --s-2: 0.5rem; --s-3: 0.75rem; --s-4: 1rem; --s-5: 1.5rem;
  --s-6: 2rem; --s-7: 3rem; --s-8: 4.5rem; --s-9: 6rem;

  --r-sm: 4px;
  --r-md: 10px;
  --r-lg: 20px;
  --r-pill: 999px;

  --sh-card: 0 18px 36px -26px rgba(27, 42, 34, 0.55);
  --sh-header: 0 8px 18px -14px rgba(27, 42, 34, 0.45);

  --pad: 1rem;
  --line-w: 6px;
  --route-gap: 40px;
  --section-pad: 4.5rem;
  --header-h: 68px;
  --max-w: 1160px;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + var(--s-4)); }
body { margin: 0; font-family: var(--f-body); font-size: 1.0625rem; line-height: 1.6; color: var(--c-ink); background: var(--c-platform); overflow-x: hidden; }
img { max-width: 100%; display: block; }
a { color: var(--c-green); text-underline-offset: 3px; }
a:hover { color: var(--c-ink); }
:focus-visible { outline: 3px solid var(--c-amber); outline-offset: 3px; }
h1, h2, h3 { font-family: var(--f-display); margin: 0; line-height: 1.05; }
h2 { font-size: clamp(1.9rem, 7vw, 3rem); font-weight: 900; letter-spacing: -0.01em; }
h3 { font-size: 1.2rem; font-weight: 700; }
p { margin: 0; }

.container { width: 100%; max-width: var(--max-w); margin: 0 auto; padding: 0 var(--pad); }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link { position: absolute; left: var(--s-4); top: var(--s-2); z-index: 100; background: var(--c-green); color: var(--c-white); padding: var(--s-2) var(--s-4); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); color: var(--c-white); }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: var(--s-3) var(--s-5); font: 700 1rem/1.2 var(--f-body); border: 2px solid transparent; border-radius: var(--r-pill); text-decoration: none; cursor: pointer; transition: transform 0.15s var(--ease); }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--c-green); color: var(--c-white); }
.btn-primary:hover { background: var(--c-green-dark); color: var(--c-white); }
.btn-outline { background: transparent; color: var(--c-ink); border-color: var(--c-ink); }
.btn-outline:hover { background: var(--c-ink); color: var(--c-white); }
.btn-block { width: 100%; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: var(--c-platform); border-bottom: var(--line-w) solid var(--c-green); }
.site-header.is-scrolled { box-shadow: var(--sh-header); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--s-3); height: var(--header-h); }
.brand { display: flex; align-items: center; gap: var(--s-3); color: var(--c-ink); text-decoration: none; }
.brand:hover { color: var(--c-ink); }
.brand-mark { width: 40px; height: 40px; flex-shrink: 0; }
.brand-text { display: flex; flex-direction: column; line-height: 1.05; }
.brand-name { font-family: var(--f-display); font-weight: 900; font-size: 1.25rem; }
.brand-sub { font-size: 0.875rem; color: var(--c-steel); }

.burger { width: 48px; height: 48px; flex-shrink: 0; display: inline-flex; flex-direction: column; justify-content: center; align-items: center; gap: 5px; background: var(--c-green); border: 0; border-radius: 50%; cursor: pointer; padding: 0; }
.burger-line { width: 20px; height: 2px; background: var(--c-white); transition: transform 0.2s var(--ease), opacity 0.2s var(--ease); }
.burger[aria-expanded="true"] .burger-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger[aria-expanded="true"] .burger-line:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] .burger-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.site-nav { position: absolute; left: 0; right: 0; top: 100%; background: var(--c-platform); border-bottom: var(--line-w) solid var(--c-green); opacity: 0; transform: translateY(-10px); visibility: hidden; transition: opacity 0.2s var(--ease), transform 0.2s var(--ease), visibility 0s linear 0.2s; }
.site-nav.is-open { opacity: 1; transform: translateY(0); visibility: visible; transition: opacity 0.2s var(--ease), transform 0.2s var(--ease); }
.nav-list { list-style: none; margin: 0; padding: var(--s-2) var(--pad) var(--s-5); }
.nav-list a { position: relative; display: block; padding: var(--s-3) 0 var(--s-3) 28px; color: var(--c-ink); font-weight: 700; text-decoration: none; }
.nav-list a::before { content: ""; position: absolute; left: 3px; top: 50%; width: 14px; height: 14px; margin-top: -7px; border: 3px solid var(--c-green); border-radius: 50%; background: var(--c-white); }
.nav-list li { position: relative; }
.nav-list li:not(:last-child)::after { content: ""; position: absolute; left: 8px; top: 50%; height: 100%; width: 4px; background: var(--c-green); z-index: -1; }
.nav-list a:hover { color: var(--c-green); }
.nav-list .nav-cta { margin-top: var(--s-3); padding-left: var(--s-5); text-align: center; background: var(--c-green); color: var(--c-white); border-radius: var(--r-pill); }
.nav-list .nav-cta::before { display: none; }
.nav-list .nav-cta:hover { background: var(--c-green-dark); color: var(--c-white); }
.nav-list li:nth-last-child(2)::after { display: none; }

/* Hero */
.hero { padding: var(--s-7) 0 0; overflow: hidden; }
.hero-kicker { display: inline-block; padding: var(--s-1) var(--s-3); background: var(--c-amber); color: var(--c-ink); font-weight: 700; font-size: 0.9375rem; border-radius: var(--r-pill); margin-bottom: var(--s-4); }
.hero-title { font-size: clamp(2.7rem, 12.5vw, 6rem); font-weight: 900; line-height: 0.95; letter-spacing: -0.02em; max-width: 12ch; }
.lead { margin-top: var(--s-5); color: var(--c-steel); font-size: 1.125rem; max-width: 58ch; }
.hero-actions { margin-top: var(--s-6); display: flex; flex-wrap: wrap; gap: var(--s-3); }
.hero-actions .btn { flex: 1 1 200px; }

.track-wrap { margin-top: var(--s-7); padding: var(--s-6) 0 var(--s-7); background: var(--c-green-soft); overflow: hidden; }
.track { position: relative; height: 84px; }
.rails { position: absolute; left: 20px; right: 20px; top: 22px; height: 30px; background-image: repeating-linear-gradient(90deg, #8E9A95 0 6px, transparent 6px 20px); }
.rails::before, .rails::after { content: ""; position: absolute; left: 0; right: 0; height: 4px; background: var(--c-steel); }
.rails::before { top: 5px; }
.rails::after { bottom: 5px; }
.run { position: absolute; left: 20px; right: 20px; top: 22px; height: 30px; animation: run 2.2s var(--ease) 0.3s both; }
.train { position: absolute; right: 16px; top: 0; width: 100px; height: 30px; display: flex; align-items: center; justify-content: space-evenly; padding: 0 18px 0 12px; background: var(--c-green); border-radius: 6px 22px 22px 6px; box-shadow: inset 0 -5px 0 var(--c-amber); }
.train span { width: 14px; height: 9px; margin-top: -4px; background: var(--c-amber); border-radius: 2px; }
.node { position: absolute; top: 15px; z-index: 2; width: 44px; height: 44px; border-radius: 50%; background: var(--c-white); border: 6px solid var(--c-ink); }
.node-a { left: 0; }
.node-b { right: 0; }
.node-label { position: absolute; top: 48px; left: 50%; transform: translateX(-50%); font-weight: 700; font-size: 0.9375rem; white-space: nowrap; }
@keyframes run { from { transform: translateX(calc(-100% + 160px)); } to { transform: translateX(0); } }

/* Route line: signature */
.route { position: relative; }
.stop { position: relative; padding: var(--section-pad) 0; }
.stop::before { content: ""; position: absolute; top: 0; bottom: 0; left: calc(max(0px, (100% - var(--max-w)) / 2) + var(--pad) + 8px); width: var(--line-w); background: var(--c-green); }
.stop .container { padding-left: calc(var(--pad) + var(--route-gap)); }
.stop-title { position: relative; margin-bottom: var(--s-6); }
.stop-title::before { content: ""; position: absolute; left: calc(-1 * var(--route-gap) + 11px); top: 0.15em; width: 22px; height: 22px; margin-left: -11px; border-radius: 50%; background: var(--c-white); border: 5px solid var(--c-green); }
.stop-interchange .stop-title::before { width: 30px; height: 30px; margin-left: -15px; top: 0.05em; border: 5px solid var(--c-ink); box-shadow: 0 0 0 4px var(--c-platform), 0 0 0 8px var(--c-amber); }
.stop-dark { background: var(--c-green); color: var(--c-white); }
.stop-dark::before { background: var(--c-amber); }
.stop-dark .stop-title::before { border-color: var(--c-amber); background: var(--c-green); }
.stop-end::before { bottom: auto; height: calc(var(--section-pad) + 14px); }
.stop-end .stop-title::before { border-color: var(--c-ink); background: var(--c-amber); }

/* Activity */
.activity-grid { display: grid; gap: var(--s-6); }
.sic { background: var(--c-ink); color: var(--c-white); border-radius: var(--r-lg); padding: var(--s-5); box-shadow: var(--sh-card); }
.sic-label { font-size: 0.9375rem; color: var(--c-on-dark); }
.sic-code { font-family: var(--f-display); font-weight: 900; font-size: clamp(3.6rem, 18vw, 6rem); line-height: 1; color: var(--c-amber); letter-spacing: 0.02em; }
.sic-name { margin-top: var(--s-2); font-weight: 700; font-size: 1.125rem; }
.activity-copy > p { color: var(--c-steel); max-width: 60ch; }
.compare { margin-top: var(--s-5); display: grid; gap: var(--s-3); }
.compare-item { padding: var(--s-4); border-radius: var(--r-md); border: 2px dashed var(--c-line); }
.compare-item p { margin-top: var(--s-1); color: var(--c-steel); }
.compare-item-on { background: var(--c-white); border: 2px solid var(--c-green); }

/* Company */
.company-grid { display: grid; gap: var(--s-5); }
.company-intro { font-size: 1.1875rem; max-width: 46ch; }
.details { margin: 0; background: var(--c-white); border-radius: var(--r-lg); padding: var(--s-2) var(--s-4); box-shadow: var(--sh-card); }
.details div { display: grid; gap: 2px; padding: var(--s-3) 0; border-bottom: 1px solid var(--c-line); }
.details div:last-child { border-bottom: 0; }
.details dt { font-size: 0.9375rem; color: var(--c-steel); }
.details dd { margin: 0; font-weight: 700; overflow-wrap: anywhere; }

/* This site notice */
.notice-grid { display: grid; gap: var(--s-5); }
.notice-lead { font-size: 1.1875rem; color: var(--c-on-dark); max-width: 44ch; }
.notice-list { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--s-3); }
.notice-list li { background: var(--c-green-dark); border-left: 5px solid var(--c-amber); border-radius: var(--r-sm); padding: var(--s-4); }
.notice-list p { margin-top: var(--s-1); color: var(--c-on-dark); }

/* Contact */
.contact-grid { display: grid; gap: var(--s-6); }
.contact-info .stop-title { margin-bottom: var(--s-3); }
.contact-info > p { color: var(--c-steel); max-width: 46ch; }
.contact-list { list-style: none; margin: var(--s-5) 0 0; padding: 0; }
.contact-list li { display: grid; gap: 2px; padding: var(--s-3) 0; border-bottom: 1px solid var(--c-line); }
.contact-list a, .contact-list span:not(.contact-label) { font-weight: 700; overflow-wrap: anywhere; }
.contact-label { font-size: 0.9375rem; color: var(--c-steel); }
.form-wrap { background: var(--c-white); border-radius: var(--r-lg); padding: var(--s-5) var(--s-4); box-shadow: var(--sh-card); border-top: var(--line-w) solid var(--c-green); }
.request-form { display: grid; gap: var(--s-4); }
.field { display: grid; gap: var(--s-1); align-content: start; }
.field-pair { display: grid; gap: var(--s-4); }
.field label { font-weight: 700; }
.optional { font-weight: 400; color: var(--c-steel); }
.field input, .field select, .field textarea { width: 100%; min-height: 48px; padding: var(--s-3); font: 400 1.0625rem/1.4 var(--f-body); color: var(--c-ink); background: var(--c-platform); border: 2px solid var(--c-line); border-radius: var(--r-md); }
.field textarea { resize: vertical; min-height: 120px; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--c-green); background: var(--c-white); }
.field [aria-invalid="true"] { border-color: var(--c-error); }
.field-error { min-height: 1.2em; font-size: 0.9375rem; font-weight: 700; color: var(--c-error); }
.field-check { grid-template-columns: 24px 1fr; column-gap: var(--s-3); }
.field-check input { width: 22px; height: 22px; min-height: 0; margin: 2px 0 0; padding: 0; accent-color: var(--c-green); }
.field-check label { font-weight: 400; }
.field-check .field-error { grid-column: 1 / -1; }
.form-success { display: grid; gap: var(--s-4); animation: pop-in 0.35s var(--ease) both; }
.form-success[hidden] { display: none; }
.form-success:focus { outline: none; }
@keyframes pop-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* Legal pages */
.page-hero { padding: var(--s-7) 0 var(--s-6); background: var(--c-green-soft); border-bottom: var(--line-w) solid var(--c-green); }
.page-hero h1 { font-size: clamp(2.4rem, 10vw, 4.2rem); font-weight: 900; line-height: 1; letter-spacing: -0.02em; }
.page-intro { margin-top: var(--s-4); color: var(--c-steel); font-size: 1.125rem; max-width: 56ch; }
.updated { display: inline-block; margin-top: var(--s-4); padding: var(--s-1) var(--s-3); background: var(--c-amber); border-radius: var(--r-pill); font-size: 0.9375rem; font-weight: 700; }
.prose { max-width: 760px; overflow-wrap: anywhere; }
.prose h2 { font-size: 1.6rem; margin-top: var(--s-6); }
.prose h2:first-child { margin-top: 0; }
.prose p { margin-top: var(--s-3); max-width: 70ch; }
.id-block { margin-top: var(--s-5); padding: var(--s-4); background: var(--c-white); border-radius: var(--r-md); border-left: var(--line-w) solid var(--c-green); }
.page-404 { min-height: 60vh; }
.nf-code { font-family: var(--f-display); font-weight: 900; font-size: clamp(5rem, 28vw, 10rem); line-height: 0.9; color: var(--c-green); }

/* Footer */
.site-footer { background: var(--c-ink); color: var(--c-on-dark); padding: var(--s-7) 0 var(--s-5); border-top: var(--line-w) solid var(--c-amber); }
.site-footer a { color: var(--c-white); }
.site-footer a:hover { color: var(--c-amber); }
.footer-top { display: grid; gap: var(--s-5); padding-bottom: var(--s-5); border-bottom: 1px solid rgba(214, 226, 219, 0.3); }
.footer-brand { display: flex; align-items: center; gap: var(--s-3); }
.footer-nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: var(--s-2) var(--s-5); }
.footer-nav a { font-weight: 700; text-decoration: none; display: inline-block; padding: var(--s-1) 0; }
.legal { padding-top: var(--s-5); font-size: 0.8125rem; line-height: 1.6; color: var(--c-on-dark); overflow-wrap: anywhere; }
.legal-bottom { margin-top: var(--s-3); display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--s-2) var(--s-5); }
.legal-links { display: flex; gap: var(--s-4); }

@media (min-width: 480px) {
  :root { --pad: 1.5rem; }
  .field-pair { grid-template-columns: 1fr 1fr; }
  .form-wrap { padding: var(--s-6) var(--s-5); }
  .hero-actions .btn { flex: 0 0 auto; }
  .compare { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 768px) {
  :root { --section-pad: 6rem; --route-gap: 64px; }
  .track { height: 96px; }
  .train { width: 180px; }
  .train span { width: 20px; }
  .details div { grid-template-columns: 180px 1fr; gap: var(--s-4); align-items: baseline; }
  .contact-list li { grid-template-columns: 150px 1fr; gap: var(--s-4); align-items: baseline; }
  .notice-list { grid-template-columns: repeat(3, 1fr); }
  .footer-top { grid-template-columns: 1fr auto; align-items: center; }
}

@media (min-width: 1024px) {
  :root { --header-h: 80px; }
  .burger { display: none; }
  .site-nav { position: static; opacity: 1; transform: none; visibility: visible; background: transparent; border: 0; transition: none; }
  .nav-list { display: flex; align-items: center; gap: var(--s-5); padding: 0; }
  .nav-list li::after { display: none; }
  .nav-list a { padding: var(--s-2) 0 var(--s-2) 22px; }
  .nav-list a::before { width: 12px; height: 12px; margin-top: -6px; left: 0; }
  .nav-list .nav-cta { margin: 0; padding: var(--s-2) var(--s-5); }
  .activity-grid { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: var(--s-7); align-items: start; }
  .company-grid { grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); gap: var(--s-7); align-items: start; }
  .contact-grid { grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: var(--s-8); align-items: start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-delay: 0ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}