:root {
  --ink: #0b1113;
  --ink-2: #243033;
  --muted: #617073;
  --line: #dce5e3;
  --paper: #f7f8f3;
  --white: #ffffff;
  --aqua: #39e6cb;
  --aqua-deep: #008f7a;
  --aqua-soft: #dffaf4;
  --navy: #071b22;
  --lime: #d9ff7a;
  --max: 78rem;
  --prose: 47rem;
  --pad: clamp(1.1rem, 4vw, 2.4rem);
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI",
          sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 6rem; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font: 1rem/1.68 var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-underline-offset: .2em; }
p, ul, ol { margin: 0 0 1.15rem; }
ul, ol { padding-left: 1.25rem; }
h1, h2, h3 {
  margin: 0;
  color: var(--ink);
  font-weight: 680;
  line-height: 1.05;
  letter-spacing: -.035em;
}
h1 { font-size: clamp(3rem, 8vw, 6.8rem); }
h2 { font-size: clamp(2rem, 4.6vw, 3.8rem); }
h3 { font-size: 1.08rem; line-height: 1.25; letter-spacing: -.015em; }
strong { font-weight: 700; }
small { font-size: .84rem; }
table { width: 100%; border-collapse: collapse; margin: 1.5rem 0 2rem; }
th, td { padding: .9rem 1rem; border: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: var(--navy); background: var(--aqua-soft); font-size: .82rem; letter-spacing: .04em; text-transform: uppercase; }
td { background: var(--white); color: var(--ink-2); font-size: .94rem; }
.wrap { width: min(100%, var(--max)); margin-inline: auto; padding-inline: var(--pad); }
.skip-link { position: fixed; left: -9999px; top: .5rem; z-index: 100; padding: .65rem 1rem; background: var(--aqua); color: var(--navy); }
.skip-link:focus { left: .5rem; }
.eyebrow, .cs-kicker {
  margin: 0 0 1rem;
  color: var(--aqua-deep);
  font-size: .76rem;
  font-weight: 760;
  letter-spacing: .13em;
  line-height: 1.3;
  text-transform: uppercase;
}

/* Navigation */
.site-nav {
  position: sticky;
  z-index: 40;
  top: 0;
  border-bottom: 1px solid rgba(220, 229, 227, .8);
  background: rgba(247, 248, 243, .88);
  backdrop-filter: blur(18px);
}
.site-nav .wrap {
  min-height: 4.4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.brand {
  color: var(--ink);
  font-weight: 720;
  line-height: 1.05;
  text-decoration: none;
}
.brand-sub { display: block; margin-top: .23rem; color: var(--muted); font-size: .67rem; font-weight: 520; letter-spacing: .06em; }
.site-nav ul { display: flex; gap: clamp(.85rem, 3vw, 2rem); margin: 0; padding: 0; list-style: none; }
.site-nav nav a { color: var(--muted); font-size: .84rem; font-weight: 650; text-decoration: none; }
.site-nav nav a:hover, .site-nav nav a[aria-current="page"] { color: var(--ink); }
.site-nav nav a[aria-current="page"]::after { display: block; height: 2px; margin-top: .24rem; background: var(--aqua-deep); content: ""; }

/* Landing */
.summary { overflow: hidden; }
.summary.wrap { width: 100%; max-width: none; padding: 0; }
.portfolio-hero,
.portfolio-section,
.portfolio-note {
  width: min(100%, var(--max));
  margin-inline: auto;
  padding-inline: var(--pad);
}
.portfolio-hero { padding-top: clamp(4rem, 10vw, 8.5rem); padding-bottom: clamp(3.5rem, 9vw, 7rem); }
.portfolio-hero h1 { max-width: 69rem; }
.portfolio-hero h1 span { color: var(--aqua-deep); }
.portfolio-hero .lede { max-width: 47rem; margin-top: 2rem; color: var(--ink-2); font-size: clamp(1.08rem, 2vw, 1.35rem); line-height: 1.55; }
.hero-proof { display: flex; flex-wrap: wrap; gap: 1rem 2.2rem; margin-top: 3.5rem; padding-top: 1.2rem; border-top: 1px solid var(--line); }
.hero-proof span { display: flex; align-items: baseline; gap: .45rem; color: var(--muted); font-size: .82rem; }
.hero-proof strong { color: var(--ink); font-size: 1.1rem; letter-spacing: -.02em; }
.featured-case {
  width: min(calc(100% - 2 * var(--pad)), var(--max));
  min-height: 42rem;
  margin-inline: auto;
  padding: clamp(2rem, 5vw, 4.2rem);
  display: grid;
  grid-template-columns: minmax(0, .85fr) minmax(25rem, 1.15fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 5rem);
  overflow: hidden;
  border-radius: 2rem;
  color: var(--white);
  background:
    radial-gradient(circle at 80% 10%, rgba(57,230,203,.24), transparent 35%),
    linear-gradient(145deg, #071b22 0%, #0a262d 100%);
}
.featured-case h2 { color: var(--white); font-size: clamp(4rem, 9vw, 7rem); }
.featured-case .eyebrow { color: var(--aqua); }
.case-tagline { color: var(--ink-2); font-size: clamp(1rem, 1.8vw, 1.22rem); line-height: 1.55; }
.featured-case .case-tagline { max-width: 31rem; margin-top: 1.2rem; color: #c8d8d7; }
.tag-list { display: flex; flex-wrap: wrap; gap: .55rem; margin: 2rem 0; padding: 0; list-style: none; }
.tag-list li { padding: .42rem .7rem; border: 1px solid rgba(255,255,255,.18); border-radius: 999px; color: #d8e6e5; font-size: .75rem; }
.button-link {
  display: inline-flex;
  gap: 1rem;
  align-items: center;
  padding: .85rem 1.1rem;
  border-radius: .4rem;
  color: var(--navy);
  background: var(--aqua);
  font-size: .88rem;
  font-weight: 760;
  text-decoration: none;
}
.button-link:hover { background: var(--lime); }
.featured-phones { min-height: 34rem; display: flex; align-items: center; justify-content: center; }
.device {
  overflow: hidden;
  margin: 0;
  border: 6px solid #10191c;
  border-radius: 2.15rem;
  background: #10191c;
  box-shadow: 0 1.4rem 3.5rem rgba(0,0,0,.28);
}
.device img { width: 100%; }
.featured-phones .device { width: clamp(9.5rem, 16vw, 13.5rem); flex: 0 0 auto; }
.featured-phones .device-front { z-index: 2; transform: translateY(-.9rem); }
.featured-phones .device-back:first-child { transform: translate(2rem, 2rem) rotate(-7deg); }
.featured-phones .device-back:last-child { transform: translate(-2rem, 2rem) rotate(7deg); }
.portfolio-section { padding-top: clamp(5rem, 10vw, 9rem); padding-bottom: clamp(4rem, 9vw, 7rem); }
.section-heading { max-width: 50rem; margin-bottom: 2.2rem; }
.tcbs-card {
  padding: clamp(1.5rem, 4vw, 3.5rem);
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 3rem;
  border: 1px solid var(--line);
  border-radius: 1.5rem;
  background: var(--white);
}
.tcbs-card .case-tagline { max-width: 34rem; }
.text-link { display: inline-block; margin-top: 1.2rem; color: var(--aqua-deep); font-weight: 720; text-decoration: none; }
.text-link:hover { text-decoration: underline; }
.impact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 1rem; background: var(--line); }
.impact-grid div { min-height: 7rem; padding: 1rem; background: var(--paper); }
.impact-grid div:last-child { grid-column: 1 / -1; }
.impact-grid dt { color: var(--muted); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; }
.impact-grid dd { margin: .35rem 0 0; font-size: 1.45rem; font-weight: 720; letter-spacing: -.04em; }
.portfolio-note { max-width: 52rem; margin-bottom: 2rem; padding-top: 2.5rem; padding-bottom: 2.5rem; border-top: 1px solid var(--line); }
.portfolio-note p:last-child { color: var(--muted); }

/* Case study shell */
.cs-header { padding-top: clamp(3.5rem, 8vw, 6.5rem); padding-bottom: 2.5rem; }
.cs-header h1 { max-width: 66rem; font-size: clamp(2.9rem, 7vw, 6.2rem); }
.cs-standfirst { max-width: 51rem; margin: 1.6rem 0 0; color: var(--ink-2); font-size: clamp(1.08rem, 2vw, 1.35rem); line-height: 1.55; }
.cs-meta { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px; margin: 2.5rem 0 0; overflow: hidden; border: 1px solid var(--line); border-radius: .9rem; background: var(--line); }
.cs-meta div { min-width: 0; padding: 1rem; background: var(--white); }
.cs-meta dt { color: var(--muted); font-size: .67rem; letter-spacing: .09em; text-transform: uppercase; }
.cs-meta dd { margin: .25rem 0 0; font-size: .9rem; font-weight: 680; line-height: 1.35; }
.cs-body { display: grid; grid-template-columns: 13rem minmax(0, 1fr); gap: clamp(2rem, 5vw, 5rem); padding-bottom: 4rem; }
.cs-content { min-width: 0; }
.cs-content > p,
.cs-content > ul,
.cs-content > ol:not(.journey):not(.process-flow),
.cs-content > h2,
.cs-content > h3,
.cs-content > table,
.cs-content > .overview,
.cs-content > .scope-note,
.cs-content > .formula-card,
.cs-content > .confidentiality { max-width: var(--prose); }
.cs-content > h2 { margin-top: clamp(4.5rem, 9vw, 7.5rem); margin-bottom: 1.6rem; padding-top: 1.1rem; border-top: 1px solid var(--line); }
.cs-content > h3 { margin-top: 2.7rem; margin-bottom: 1rem; font-size: 1.55rem; }
.cs-content > p, .cs-content > ul, .cs-content > ol { color: var(--ink-2); }
.cs-toc { position: relative; }
.cs-toc nav { position: sticky; top: 6rem; }
.cs-toc-title { margin: 0 0 .7rem; color: var(--muted); font-size: .68rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.cs-toc ol { margin: 0; padding: 0; border-left: 1px solid var(--line); list-style: none; }
.cs-toc a { display: block; margin-left: -1px; padding: .38rem 0 .38rem .85rem; border-left: 2px solid transparent; color: var(--muted); font-size: .76rem; line-height: 1.35; text-decoration: none; }
.cs-toc a:hover, .cs-toc a.is-active { color: var(--ink); border-left-color: var(--aqua-deep); }
.overview { margin: 2.5rem 0 0; padding: 1.25rem 1.4rem; border: 1px solid #b9e8de; border-radius: 1rem; background: var(--aqua-soft); }
.overview p { margin-bottom: .7rem; }
.overview p:last-child { margin-bottom: 0; }

/* Case visuals */
.case-visual { grid-column: 1 / -1; margin: 0 0 2rem; border-radius: 1.8rem; }
.case-visual-aura { min-height: 40rem; padding: clamp(1.5rem, 5vw, 4rem); display: grid; grid-template-columns: .75fr 1.25fr; align-items: center; gap: 2rem; overflow: hidden; color: var(--white); background: radial-gradient(circle at 75% 10%, rgba(57,230,203,.35), transparent 35%), var(--navy); }
.case-visual-aura .eyebrow { color: var(--aqua); }
.visual-copy p:last-child { max-width: 22rem; color: #c4d6d4; font-size: 1.1rem; }
.visual-devices { display: flex; justify-content: center; align-items: center; min-height: 32rem; }
.visual-devices .device { width: clamp(10rem, 18vw, 14rem); flex: 0 0 auto; }
.visual-devices .device-primary { z-index: 2; transform: translateY(-1rem); }
.visual-devices .tilt-left { transform: translate(1.7rem, 1.4rem) rotate(-6deg); }
.visual-devices .tilt-right { transform: translate(-1.7rem, 1.4rem) rotate(6deg); }
.case-visual-tcbs { container-type: inline-size; min-height: 31rem; padding: clamp(2rem, 5vw, 4rem); display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 30rem); align-items: center; gap: 3rem; color: var(--white); background: linear-gradient(145deg, var(--navy), #0d3036); }
.case-visual-tcbs .display-title { color: var(--white); font-size: clamp(2.3rem, 5vw, 4.8rem); font-weight: 680; line-height: 1.02; letter-spacing: -.045em; }
.case-visual-tcbs .eyebrow { color: var(--aqua); }
.orbit-wrap { width: 100%; max-width: 30rem; min-width: 0; justify-self: center; margin: 0; }
.system-orbit { --r1: clamp(6.5rem, 11vw, 9rem); --r2: clamp(9rem, 14vw, 11rem); --core: clamp(6rem, 9vw, 7.5rem); height: calc(var(--r2) * 2 + 2.5rem); position: relative; }
.system-orbit::before, .system-orbit::after { position: absolute; top: 50%; left: 50%; border-radius: 50%; transform: translate(-50%, -50%); content: ""; }
.system-orbit::before { width: calc(var(--r1) * 2); aspect-ratio: 1; border: 1px solid rgba(57,230,203,.38); }
.system-orbit::after { width: calc(var(--r2) * 2); aspect-ratio: 1; border: 1px dashed rgba(255,255,255,.16); }
.system-orbit strong { position: absolute; z-index: 2; top: 50%; left: 50%; width: var(--core); aspect-ratio: 1; display: grid; place-items: center; border-radius: 50%; color: var(--navy); background: var(--aqua); text-align: center; line-height: 1.2; transform: translate(-50%, -50%); }
.system-orbit span { position: absolute; z-index: 1; top: 50%; left: 50%; padding: .45rem .75rem; border-radius: 999px; font-size: .73rem; line-height: 1.2; white-space: nowrap; transform: translate(-50%, -50%); }
.system-orbit .orbit-own { left: calc(50% + var(--r1) * var(--x)); top: calc(50% + var(--r1) * var(--y)); border: 1px solid rgba(57,230,203,.6); color: #eafffb; background: #12403f; }
.system-orbit .orbit-link { left: calc(50% + var(--r2) * var(--x)); top: calc(50% + var(--r2) * var(--y)); border: 1px dashed rgba(255,255,255,.34); color: #b3c7c5; background: #0c252b; }
.orbit-legend { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: .45rem; margin-top: .6rem; color: #b3c7c5; font-size: .72rem; }
.orbit-legend i { width: .9rem; height: .55rem; border-radius: 999px; }
.orbit-legend i:nth-of-type(2) { margin-left: .9rem; }
.orbit-legend .key-own { border: 1px solid rgba(57,230,203,.6); background: #12403f; }
.orbit-legend .key-link { border: 1px dashed rgba(255,255,255,.34); background: #0c252b; }

@container (max-width: 60rem) {
  .case-visual-tcbs > div, .case-visual-tcbs > .orbit-wrap { grid-column: 1 / -1; text-align: center; }
}

/* Content modules */
.position-grid, .feature-grid, .migration-grid, .delivery-grid { max-width: 64rem; display: grid; gap: 1rem; margin: 2rem 0; }
.position-grid { grid-template-columns: repeat(4, 1fr); }
.feature-grid { grid-template-columns: repeat(3, 1fr); }
.migration-grid, .delivery-grid { grid-template-columns: repeat(2, 1fr); }
.position-grid article, .feature-grid article, .migration-grid article, .delivery-grid article { padding: 1.15rem; border: 1px solid var(--line); border-radius: 1rem; background: var(--white); }
.position-grid span, .migration-grid span { color: var(--aqua-deep); font: 700 .7rem/1 var(--mono); }
.position-grid h3, .migration-grid h3 { margin-top: 1.7rem; }
.feature-grid h3, .delivery-grid h3 { margin-bottom: .6rem; }
.position-grid p, .feature-grid p, .migration-grid p, .delivery-grid p { margin: .5rem 0 0; color: var(--muted); font-size: .88rem; line-height: 1.55; }
.scope-note, .confidentiality { margin: 1.5rem 0; padding: 1rem 1.15rem; border-left: 3px solid var(--aqua-deep); color: var(--muted); background: var(--white); font-size: .9rem; }
.journey { max-width: 64rem; display: grid; grid-template-columns: repeat(6, 1fr); gap: 1px; margin: 2rem 0; padding: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 1rem; background: var(--line); list-style: none; }
.journey-five { grid-template-columns: repeat(5, 1fr); }
.journey li { min-height: 8.5rem; padding: .85rem; display: flex; flex-direction: column; background: var(--white); }
.journey li span { color: var(--aqua-deep); font: 700 .7rem/1 var(--mono); }
.journey li strong { margin-top: auto; font-size: .9rem; }
.journey li small { margin-top: .25rem; color: var(--muted); line-height: 1.35; }
.screen-pair { max-width: 52rem; display: grid; grid-template-columns: repeat(2, minmax(0, 16rem)); justify-content: center; gap: clamp(1.5rem, 6vw, 4rem); margin: 2.5rem 0; padding: clamp(1.5rem, 4vw, 3rem); border-radius: 1.6rem; background: #e8efec; }
.screen-pair figure { margin: 0; }
.screen-pair .device { width: 100%; }
.screen-pair figcaption { margin-top: 1rem; color: var(--muted); font-size: .8rem; line-height: 1.45; }
.screen-pair figcaption strong { color: var(--ink); }
.process-flow { max-width: 58rem; margin: 2rem 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); overflow: hidden; border: 1px solid var(--line); border-radius: 1rem; list-style: none; }
.process-flow li { min-height: 11.5rem; padding: 1rem; border-right: 1px solid var(--line); background: var(--white); }
.process-flow li:last-child { border-right: 0; }
.process-flow li > span { width: 1.8rem; height: 1.8rem; display: grid; place-items: center; border-radius: 50%; color: var(--navy); background: var(--aqua); font: 700 .75rem/1 var(--mono); }
.process-flow li div { margin-top: 2.5rem; }
.process-flow strong, .process-flow small { display: block; }
.process-flow small { margin-top: .4rem; color: var(--muted); line-height: 1.4; }
.formula-card { margin: 1.8rem 0; padding: 1.4rem; border-radius: 1rem; color: var(--white); background: var(--navy); }
.formula-card span { color: var(--aqua); font-size: .72rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.formula-card strong { display: block; margin-top: .4rem; font: 700 clamp(1.25rem, 3vw, 2rem)/1.3 var(--mono); }
.formula-card p { margin: .75rem 0 0; color: #bcd0ce; font-size: .86rem; }

/* Footer */
.site-footer { margin-top: 4rem; border-top: 1px solid var(--line); }
.site-footer .wrap { padding-top: 2rem; padding-bottom: 2.5rem; display: grid; grid-template-columns: 1fr auto; gap: .4rem 2rem; }
.site-footer p { margin: 0; color: var(--muted); font-size: .8rem; }
.footer-links { text-align: right; }
.footer-note { max-width: 40rem; grid-column: 1 / -1; margin-top: .6rem !important; font-size: .72rem !important; }


/* TCBS desktop mockups */
.tcbs-wireframes { max-width: 64rem; margin: 2.5rem 0; }
.tcbs-wireframes-note { max-width: var(--prose); color: var(--muted); font-size: .9rem; }
.tcbs-wireframes figure { margin: 1.5rem 0 2.5rem; }
.tcbs-wireframes a { display: block; border: 1px solid var(--line); border-radius: .75rem; overflow: hidden; background: var(--white); }
.tcbs-wireframes a:focus-visible { outline: 3px solid var(--aqua-deep); outline-offset: 4px; }
.tcbs-wireframes img { width: 100%; height: auto; }
.tcbs-wireframes figcaption { max-width: var(--prose); margin-top: .85rem; color: var(--muted); font-size: .9rem; line-height: 1.55; }
.tcbs-wireframes figcaption strong { color: var(--ink); }

@media (max-width: 64rem) {
  .featured-case, .case-visual-aura, .case-visual-tcbs { grid-template-columns: 1fr; }
  .featured-copy { z-index: 2; }
  .featured-phones { min-height: 27rem; }
  .cs-body { grid-template-columns: 1fr; }
  .cs-toc { display: none; }
  .cs-meta { grid-template-columns: repeat(3, 1fr); }
  .case-visual-aura .visual-copy { display: none; }
  .case-visual-tcbs { text-align: center; }
  .position-grid { grid-template-columns: repeat(2, 1fr); }
  .journey, .journey-five { grid-template-columns: repeat(3, 1fr); }
  .process-flow { grid-template-columns: 1fr; }
  .process-flow li { min-height: 0; display: grid; grid-template-columns: 2.2rem 1fr; gap: .8rem; border-right: 0; border-bottom: 1px solid var(--line); }
  .process-flow li div { margin-top: 0; }
}

@media (max-width: 42rem) {
  body { font-size: .96rem; }
  .site-nav .wrap { min-height: 4rem; }
  .brand-sub { display: none; }
  .site-nav nav a { font-size: .75rem; }
  .portfolio-hero { padding-top: 3.8rem; }
  .hero-proof { display: grid; grid-template-columns: 1fr 1fr; }
  .featured-case { min-height: 0; border-radius: 1.2rem; }
  .featured-phones, .visual-devices { min-height: 22rem; margin-inline: -3.5rem; }
  .featured-phones .device, .visual-devices .device { width: 9.2rem; }
  .tcbs-card { grid-template-columns: 1fr; gap: 1.5rem; }
  .cs-meta { grid-template-columns: repeat(2, 1fr); }
  .case-visual { border-radius: 1.2rem; }
  .case-visual-aura { min-height: 27rem; padding-inline: 1rem; }
  .case-visual-tcbs { padding: 2rem 1rem; }
  .system-orbit { --r1: 5.8rem; --r2: 7.6rem; --core: 5rem; }
  .system-orbit strong { font-size: .85rem; }
  .system-orbit span { max-width: 5.6rem; padding: .32rem .55rem; font-size: .64rem; white-space: normal; text-align: center; }
  .position-grid, .feature-grid, .migration-grid, .delivery-grid { grid-template-columns: 1fr; }
  .journey, .journey-five { grid-template-columns: repeat(2, 1fr); }
  .screen-pair { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .8rem; padding: 1rem; }
  .screen-pair .device { border-width: 4px; border-radius: 1.25rem; }
  th, td { padding: .7rem; font-size: .78rem; }
  .site-footer .wrap { grid-template-columns: 1fr; }
  .footer-links { text-align: left; }
}

@media (max-width: 23rem) {
  .system-orbit { --r1: 5rem; --r2: 6.1rem; --core: 4rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

@media print {
  .site-nav, .site-footer, .cs-toc { display: none !important; }
  body { background: #fff; color: #000; font-size: 10pt; }
  .cs-body { display: block; }
  .case-visual { break-inside: avoid; }
  .device { box-shadow: none; }
}