/* gttn.global — marketing site. System fonts only (no third-party requests), light theme, GTTN brand colours. */
:root {
  --navy: #344d6c;
  --ink: #0b2545;
  --orange: #e36c0a;
  --orange-dark: #b9560a;
  --teal: #13838f;
  --text: #1f2933;
  --muted: #5a6370;
  --line: #dde3ea;
  --bg: #ffffff;
  --soft: #f4f7fa;
  --radius: 14px;
  --wrap: 1140px;
  --shadow: 0 10px 30px rgba(11, 37, 69, 0.08);
  --font: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font: 17px/1.6 var(--font);
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  height: auto;
}
a {
  color: var(--navy);
}
a:hover {
  color: var(--orange-dark);
}
.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}
.skip {
  position: absolute;
  left: -999px;
}
.skip:focus {
  left: 16px;
  top: 16px;
  background: #fff;
  padding: 8px 12px;
  z-index: 100;
}
:focus-visible {
  outline: 3px solid var(--orange);
  outline-offset: 2px;
}

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 16px;
}
.brand img {
  height: 40px;
  width: auto;
  display: block;
}
.nav {
  display: flex;
  align-items: center;
  gap: 26px;
}
.nav a {
  text-decoration: none;
  color: var(--ink);
  font-weight: 600;
  font-size: 15px;
}
.nav a[aria-current='page'] {
  color: var(--orange-dark);
}
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  font: inherit;
  cursor: pointer;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  border: 2px solid transparent;
  font-size: 15px;
  line-height: 1.2;
  cursor: pointer;
}
.btn-primary {
  background: var(--orange);
  color: #fff;
}
.btn-primary:hover {
  background: var(--orange-dark);
  color: #fff;
}
.btn-ghost {
  border-color: var(--navy);
  color: var(--navy);
  background: transparent;
}
.btn-ghost:hover {
  background: var(--navy);
  color: #fff;
}
.btn-light {
  background: #fff;
  color: var(--ink);
}
.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
}

/* ---------- hero ---------- */
.hero {
  background:
    radial-gradient(1200px 500px at 85% -10%, rgba(227, 108, 10, 0.1), transparent 60%),
    linear-gradient(180deg, #f6f9fc 0%, #fff 100%);
  padding: 72px 0 64px;
}
.hero .wrap {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 13px;
  font-weight: 700;
  color: var(--teal);
  margin: 0 0 12px;
}
h1,
h2,
h3 {
  color: var(--ink);
  line-height: 1.2;
  margin: 0 0 14px;
}
h1 {
  font-size: clamp(34px, 4.6vw, 54px);
  letter-spacing: -0.02em;
}
h2 {
  font-size: clamp(26px, 3vw, 36px);
  letter-spacing: -0.01em;
}
h3 {
  font-size: 20px;
}
.lead {
  font-size: 20px;
  color: var(--muted);
  max-width: 640px;
}
.promise {
  font-weight: 700;
  color: var(--navy);
}
.promise em {
  font-style: normal;
  color: var(--orange-dark);
}
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}
.note {
  font-size: 14px;
  color: var(--muted);
  margin-top: 14px;
}

/* ---------- sections ---------- */
section {
  padding: 76px 0;
}
section.soft {
  background: var(--soft);
}
section.dark {
  background: var(--ink);
  color: #dbe4ee;
}
section.dark h2,
section.dark h3 {
  color: #fff;
}
.section-head {
  max-width: 760px;
  margin-bottom: 40px;
}
.section-head p {
  color: var(--muted);
  font-size: 18px;
}
section.dark .section-head p {
  color: #b9c6d4;
}
.grid {
  display: grid;
  gap: 22px;
}
.g2 {
  grid-template-columns: repeat(2, 1fr);
}
.g3 {
  grid-template-columns: repeat(3, 1fr);
}
.g4 {
  grid-template-columns: repeat(4, 1fr);
}
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
}
.card p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
}
.card h3 {
  font-size: 19px;
}
.card .icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: rgba(227, 108, 10, 0.12);
  color: var(--orange-dark);
  font-weight: 800;
  margin-bottom: 14px;
}
.card a.more {
  display: inline-block;
  margin-top: 12px;
  font-weight: 700;
  text-decoration: none;
}
.card ul {
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--muted);
  font-size: 15px;
}
section.dark .card {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.12);
}
section.dark .card p {
  color: #b9c6d4;
}

/* lifecycle */
.steps {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 8px;
  counter-reset: s;
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
}
.steps li {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 10px;
  text-align: center;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--ink);
}
.steps li::before {
  counter-increment: s;
  content: counter(s);
  display: block;
  color: var(--orange);
  font-size: 18px;
}
.steps li.key {
  border-color: var(--orange);
  box-shadow: 0 0 0 2px rgba(227, 108, 10, 0.15);
}

/* product mock (illustrative, synthetic data) */
.mock {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  font-size: 14px;
}
.mock-bar {
  background: var(--ink);
  color: #fff;
  padding: 10px 16px;
  display: flex;
  justify-content: space-between;
  font-size: 13px;
}
.mock-body {
  padding: 18px;
}
.mock h4 {
  margin: 0 0 4px;
  color: var(--ink);
  font-size: 16px;
}
.mock .sub {
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 12px;
}
.check {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 8px 0;
  border-top: 1px solid var(--line);
}
.check b {
  color: var(--ink);
  font-weight: 600;
}
.check small {
  display: block;
  color: var(--muted);
}
.dot {
  flex: 0 0 22px;
  height: 22px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 800;
  color: #fff;
}
.ok {
  background: #1f8a4c;
}
.wait {
  background: #c7d0db;
  color: var(--ink);
}
.act {
  background: var(--orange);
}
.mock-foot {
  font-size: 12px;
  color: var(--muted);
  padding: 10px 18px;
  background: var(--soft);
}
.pill {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  background: rgba(19, 131, 143, 0.12);
  color: var(--teal);
}

/* principles / status */
.principle {
  border-left: 4px solid var(--orange);
  padding: 4px 0 4px 18px;
}
.principle h3 {
  font-size: 18px;
  margin-bottom: 6px;
}
.principle p {
  margin: 0;
  color: var(--muted);
}
section.dark .principle p {
  color: #b9c6d4;
}
.status {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}
.status ul {
  margin: 0;
  padding-left: 20px;
}
.status li {
  margin: 6px 0;
}
.cta-band {
  background: linear-gradient(120deg, var(--ink), var(--navy));
  color: #fff;
  border-radius: 20px;
  padding: 46px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}
.cta-band h2 {
  color: #fff;
  margin: 0 0 6px;
}
.cta-band p {
  margin: 0;
  color: #cfdae6;
}

/* content pages */
.page-head {
  background: linear-gradient(180deg, #f6f9fc, #fff);
  padding: 64px 0 28px;
}
.prose {
  max-width: 780px;
}
.prose h2 {
  margin-top: 36px;
  font-size: 26px;
}
.prose h3 {
  margin-top: 24px;
}
.prose p,
.prose li {
  color: var(--text);
}
.legal-note {
  background: #fff6e0;
  border: 1px solid #f0d9a8;
  border-radius: 10px;
  padding: 14px 18px;
  font-size: 15px;
}
.anchor-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}
.anchor-nav a {
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
}
.solution {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
  padding: 44px 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: 90px;
}
.solution:first-of-type {
  border-top: none;
}
.solution ul {
  margin: 0;
  padding-left: 20px;
}
.solution li {
  margin: 6px 0;
}

/* forms */
form.contact {
  display: grid;
  gap: 16px;
  max-width: 640px;
}
.field {
  display: grid;
  gap: 6px;
}
label {
  font-weight: 600;
  font-size: 15px;
  color: var(--ink);
}
input,
select,
textarea {
  font: inherit;
  font-size: 16px;
  padding: 12px 14px;
  border: 1px solid #c5ced8;
  border-radius: 10px;
  background: #fff;
  color: var(--text);
}
textarea {
  min-height: 140px;
  resize: vertical;
}
.form-status {
  font-size: 15px;
}

/* footer */
.site-footer {
  background: var(--ink);
  color: #b9c6d4;
  padding: 56px 0 28px;
  font-size: 15px;
}
.site-footer a {
  color: #dbe4ee;
  text-decoration: none;
}
.site-footer a:hover {
  color: #fff;
}
.foot-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 28px;
}
.foot-grid h4 {
  color: #fff;
  margin: 0 0 10px;
  font-size: 15px;
}
.foot-grid ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.foot-grid li {
  margin: 6px 0;
}
.foot-legal {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  margin-top: 36px;
  padding-top: 20px;
  font-size: 13px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
}

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .hero .wrap,
  .solution,
  .status {
    grid-template-columns: 1fr;
  }
  .g3,
  .g4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .steps {
    grid-template-columns: repeat(4, 1fr);
  }
  .foot-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 760px) {
  body {
    font-size: 16px;
  }
  .wrap {
    padding: 0 16px;
  }
  .nav-toggle {
    display: block;
  }
  .nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: stretch;
    padding: 12px 16px 18px;
    gap: 6px;
  }
  .nav.open {
    display: flex;
  }
  .nav a {
    padding: 10px 4px;
  }
  .g2,
  .g3,
  .g4 {
    grid-template-columns: 1fr;
  }
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }
  section {
    padding: 56px 0;
  }
  .hero {
    padding: 48px 0;
  }
  .cta-band {
    padding: 30px 22px;
  }
  .foot-grid {
    grid-template-columns: 1fr;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}