/* ================= OrbiitIndhan landing design system ================= */

:root {
  --oi-bg: #F5F7FA;
  --oi-ink: #0A1F44;
  --oi-blue: #0B3D91;
  --oi-red: #FC3D21;
  --oi-cyan: #27AAE0;
  --oi-muted: #5C6B85;
  --oi-soft: #C9D2DF;
  --oi-line: #E1E6ED;
  --oi-dark-line: rgba(245, 247, 250, 0.14);
  --oi-mono: 'IBM Plex Mono', monospace;
  --oi-sans: 'IBM Plex Sans', sans-serif;
  --oi-display: 'Space Grotesk', sans-serif;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}
html, body { margin: 0; padding: 0; background: var(--oi-bg); }
::selection { background: var(--oi-blue); color: var(--oi-bg); }

.oi-page {
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--oi-bg);
  color: var(--oi-ink);
  font-family: var(--oi-sans);
  -webkit-font-smoothing: antialiased;
}

.oi-page::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: url("../assets/europe-map.png") no-repeat center 40% / min(90vw, 1120px);
  opacity: 0.09;
  filter: grayscale(1);
}

.oi-wrap {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 76px 48px 0;
}

/* ---------- typography ---------- */

.oi-h1 {
  font: 700 74px/1.02 var(--oi-display);
  letter-spacing: -0.03em;
  margin: 22px 0 0;
  text-wrap: balance;
}

.oi-h2 {
  font: 700 40px/1.1 var(--oi-display);
  letter-spacing: -0.02em;
  margin: 16px 0 12px;
  max-width: 820px;
  text-wrap: balance;
}

.oi-h3 { font: 600 24px var(--oi-display); margin: 12px 0 10px; }

.oi-kicker {
  font: 600 12px var(--oi-mono);
  letter-spacing: 0.24em;
  color: var(--oi-blue);
}
.oi-kicker--red { color: var(--oi-red); }

.oi-lede {
  font: 400 16px/1.65 var(--oi-sans);
  color: var(--oi-muted);
  margin: 0;
  max-width: 72ch;
}

.oi-body {
  font: 400 15px/1.65 var(--oi-sans);
  color: var(--oi-muted);
  margin: 0;
}

.oi-source {
  font: 500 10px var(--oi-mono);
  letter-spacing: 0.14em;
  color: var(--oi-muted);
}

/* ---------- nav ---------- */

.oi-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 300;
  background: rgba(245, 247, 250, 0.96);
  backdrop-filter: blur(10px);
}

.oi-nav-shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 10px 48px;
}

.oi-nav-bar {
  display: flex;
  align-items: stretch;
  border: 1.5px solid var(--oi-line);
  border-radius: 8px;
  background: #fff;
  overflow: hidden;
}

.oi-nav-seg {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 14px;
  min-height: 48px;
  border-right: 1px solid var(--oi-line);
  font: 600 10px var(--oi-mono);
  letter-spacing: 0.14em;
  color: var(--oi-muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.15s, background 0.15s;
}

.oi-nav-seg:last-child {
  border-right: none;
}

.oi-nav-seg--brand {
  padding: 0 16px;
  gap: 10px;
  flex-shrink: 0;
  color: var(--oi-ink);
}

.oi-nav-brand-text {
  font: 700 16px var(--oi-display);
  letter-spacing: -0.02em;
  color: var(--oi-ink);
}

.oi-nav-brand-text span {
  color: var(--oi-blue);
}

.oi-nav-seg--brand:hover {
  background: rgba(11, 61, 145, 0.04);
}

.oi-nav-link:hover {
  color: var(--oi-ink);
  background: rgba(245, 247, 250, 0.9);
}

.oi-nav-link.active {
  color: var(--oi-ink);
  background: var(--oi-bg);
}

.oi-nav-link.active .oi-nav-num {
  color: var(--oi-red);
}

.oi-nav-num {
  color: var(--oi-soft);
  font-weight: 600;
}

.oi-nav-seg--loc {
  margin-left: auto;
  padding: 0 16px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--oi-muted);
}

.oi-nav-seg--cta {
  margin-left: auto;
  padding: 0 20px;
  background: var(--oi-ink);
  color: var(--oi-bg);
  font-weight: 600;
  letter-spacing: 0.16em;
}

.oi-nav-seg--cta:hover {
  background: var(--oi-blue);
  color: var(--oi-bg);
}

.oi-nav-seg--cta.active {
  background: var(--oi-blue);
  color: var(--oi-bg);
}

.oi-nav.is-scrolled .oi-nav-bar {
  box-shadow: 0 4px 18px rgba(10, 31, 68, 0.07);
}

.oi-nav-link:not(.oi-nav-seg--brand):not(.oi-nav-seg--cta) {
  flex: 1;
  min-width: 72px;
}

@media (max-width: 1100px) {
  .oi-nav-seg {
    padding: 0 10px;
    font-size: 9px;
    letter-spacing: 0.1em;
  }
  .oi-nav-seg--brand .oi-nav-brand-text {
    font-size: 14px;
  }
}

/* ---------- buttons ---------- */

.oi-btn {
  font: 600 14px var(--oi-mono);
  letter-spacing: 0.06em;
  text-decoration: none;
  padding: 15px 28px;
  border-radius: 3px;
  display: inline-block;
  transition: background 0.15s;
}
.oi-btn--blue { color: var(--oi-bg); background: var(--oi-blue); }
.oi-btn--blue:hover { background: var(--oi-ink); }
.oi-btn--ink { color: var(--oi-bg); background: var(--oi-ink); padding: 11px 22px; font-size: 13px; }
.oi-btn--ink:hover { background: var(--oi-blue); }

.oi-link {
  font: 500 14px var(--oi-mono);
  letter-spacing: 0.06em;
  color: var(--oi-ink);
  text-decoration: none;
}
.oi-link:hover { color: var(--oi-blue); }

/* ---------- acts and bridges ---------- */

.oi-act { border-top: 1px solid var(--oi-line); padding: 72px 0 80px; }

.oi-act-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.oi-act-bridge {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 0 0 44px;
}
.oi-act-bridge::before,
.oi-act-bridge::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--oi-line);
}
.oi-act-bridge span {
  font: 500 15px/1.5 var(--oi-mono);
  color: var(--oi-blue);
  text-align: center;
  max-width: 60ch;
}

.oi-subkicker {
  font: 600 11px var(--oi-mono);
  letter-spacing: 0.2em;
  color: var(--oi-red);
  margin: 48px 0 0;
}

/* ---------- hero ---------- */

.oi-hero { position: relative; padding: 96px 0 90px; }

.oi-hero-rings {
  position: absolute;
  right: -140px;
  top: -60px;
  pointer-events: none;
}

.oi-hero-copy { position: relative; max-width: 680px; }

.oi-hero-lede {
  font: 400 19px/1.6 var(--oi-sans);
  color: var(--oi-muted);
  margin: 26px 0 0;
  max-width: 58ch;
}

.oi-hero-ctas {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-top: 38px;
  flex-wrap: wrap;
}

.oi-research-note {
  font: 500 14px/1.5 var(--oi-sans);
  color: var(--oi-blue);
  margin: 16px 0 0;
  max-width: 58ch;
}

.oi-btn--ghost {
  color: var(--oi-blue);
  background: transparent;
  border: 1.5px solid var(--oi-blue);
}
.oi-btn--ghost:hover {
  color: var(--oi-bg);
  background: var(--oi-blue);
}

.oi-feedback {
  border-top: 1px solid var(--oi-line);
  padding: 64px 0 72px;
}
.oi-feedback-list {
  margin: 20px 0 0;
  padding-left: 1.2em;
  font: 500 16px/1.7 var(--oi-sans);
  color: var(--oi-ink);
  max-width: 48ch;
}
.oi-feedback-list li { margin: 0.35em 0; }

.oi-backed-banner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 48px 0 0;
  width: 100%;
  box-sizing: border-box;
  padding: 36px 28px;
  background: #FFFFFF;
  border: 1px solid var(--oi-line);
  color: #125F4D;
  font: italic 400 30px/1.2 "Libre Baskerville", Georgia, "Times New Roman", serif;
  letter-spacing: 0.01em;
  text-align: center;
  text-decoration: none;
  overflow: hidden;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.oi-backed-banner__scene {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.oi-backed-client {
  position: absolute;
  right: 52px;
  top: 50%;
  width: 88px;
  height: auto;
  transform: translateY(-50%);
  opacity: 0.9;
  z-index: 0;
  transition: filter 0.4s ease, opacity 0.4s ease;
}

.oi-backed-banner.is-docked .oi-backed-client {
  opacity: 1;
  filter: drop-shadow(0 0 8px rgba(18, 95, 77, 0.45));
}

.oi-backed-flight {
  position: absolute;
  left: 0;
  top: 0;
  bottom: auto;
  display: flex;
  align-items: center;
  transform-origin: center center;
  will-change: transform;
  z-index: 1;
  transform: translate(var(--oi-home-x, 12px), var(--oi-home-y, 14px));
}

@keyframes oiDockApproach {
  0% {
    transform: translate(var(--oi-home-x), var(--oi-home-y)) rotate(0deg);
  }
  45% {
    transform: translate(var(--oi-mid-x), var(--oi-mid-y)) rotate(-3deg);
  }
  85% {
    transform: translate(var(--oi-dock-x), var(--oi-dock-y)) rotate(-2deg);
  }
  100% {
    transform: translate(var(--oi-dock-nudge-x), var(--oi-dock-y)) rotate(0deg);
  }
}

.oi-backed-banner.is-docking .oi-backed-flight {
  animation: oiDockApproach 4.5s ease-in-out forwards;
}

.oi-backed-banner.is-returning .oi-backed-flight {
  animation: oiDockApproach 4.5s ease-in-out reverse forwards;
}

.oi-backed-servicer {
  display: block;
  width: 88px;
  height: auto;
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 1px 2px rgba(18, 95, 77, 0.2));
}

.oi-backed-smoke {
  position: absolute;
  left: 0;
  top: 50%;
  width: 14px;
  height: 14px;
  margin-top: -7px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(92, 107, 133, 0.55) 0%, rgba(18, 95, 77, 0.35) 55%, transparent 72%);
  filter: blur(4px);
  opacity: 0;
  z-index: 0;
}

.oi-backed-smoke:nth-child(1) {
  left: -6px;
  width: 12px;
  height: 12px;
  margin-top: -6px;
}

.oi-backed-smoke:nth-child(2) {
  left: -18px;
  width: 16px;
  height: 16px;
  margin-top: -8px;
}

.oi-backed-smoke:nth-child(3) {
  left: -32px;
  width: 20px;
  height: 20px;
  margin-top: -10px;
}

.oi-backed-banner__text {
  position: relative;
  z-index: 2;
  pointer-events: none;
}

.oi-backed-banner:hover {
  color: #0d4d35;
  border-color: #125F4D;
}

.oi-backed-banner.is-docking .oi-backed-smoke {
  animation: oi-backed-smoke 1.2s ease-out infinite;
}

.oi-backed-banner.is-docking .oi-backed-smoke:nth-child(1) {
  animation-delay: 0s;
}

.oi-backed-banner.is-docking .oi-backed-smoke:nth-child(2) {
  animation-delay: 0.18s;
}

.oi-backed-banner.is-docking .oi-backed-smoke:nth-child(3) {
  animation-delay: 0.36s;
}

@keyframes oi-backed-smoke {
  0% {
    opacity: 0;
    transform: scale(0.35) translateX(4px);
  }
  25% {
    opacity: 0.75;
    transform: scale(1) translateX(-6px);
  }
  100% {
    opacity: 0;
    transform: scale(1.4) translateX(-22px);
  }
}

@media (max-width: 640px) {
  .oi-backed-banner {
    font-size: 22px;
    padding: 28px 18px;
  }

  .oi-backed-client {
    right: 32px;
    width: 64px;
  }

  .oi-backed-servicer {
    width: 64px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .oi-backed-client {
    right: 52px;
    opacity: 0.9;
    filter: none;
  }

  .oi-backed-flight {
    left: 0;
    top: 0;
    animation: none !important;
  }

  .oi-backed-banner.is-docking .oi-backed-flight,
  .oi-backed-banner.is-returning .oi-backed-flight {
    animation: none !important;
  }

  .oi-backed-banner.is-docking .oi-backed-smoke,
  .oi-backed-banner.is-returning .oi-backed-smoke {
    animation: none;
    opacity: 0;
  }
}

.oi-stat-strip {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-top: 64px;
  border: 1.5px solid var(--oi-line);
  border-radius: 8px;
  background: #fff;
  overflow: visible;
}
.oi-stat-strip > div {
  flex: 1;
  min-width: 180px;
  padding: 22px 26px;
  border-right: 1px solid var(--oi-line);
}
.oi-stat-strip > div:last-child { border-right: none; }

.oi-strip-value {
  font: 700 32px var(--oi-display);
  color: var(--oi-blue);
  margin: 6px 0 2px;
}
.oi-strip-value--red { color: var(--oi-red); }
.oi-strip-value--ink { color: var(--oi-ink); }

/* ---------- cards, grids, panels ---------- */

.oi-grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: start; }
.oi-grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.oi-grid4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.oi-stat-cards { align-items: stretch; }
.oi-stat-card {
  display: flex;
  flex-direction: column;
  min-height: 148px;
}
.oi-stat-card .oi-stat-desc { margin-top: auto; }

.oi-proof-detail {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 36px;
  align-items: start;
}
.oi-proof-detail-copy .oi-body { margin: 0; }
.oi-proof-detail-chart .oi-panel-title { margin-bottom: 12px; }

.oi-orbit-breakdown {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.oi-orbit-row {
  display: grid;
  grid-template-columns: 140px 1fr 56px;
  align-items: center;
  gap: 12px;
}
.oi-orbit-label {
  font: 600 12px var(--oi-mono);
  color: var(--oi-ink);
}
.oi-orbit-bar-track {
  height: 6px;
  background: var(--oi-line);
  border-radius: 3px;
  overflow: hidden;
}
.oi-orbit-bar-fill {
  height: 100%;
  border-radius: 3px;
}
.oi-orbit-value {
  font: 600 13px var(--oi-mono);
  color: var(--oi-muted);
  text-align: right;
}

.oi-card {
  background: #fff;
  border: 1.5px solid var(--oi-line);
  border-radius: 8px;
  padding: 24px;
  overflow: visible;
}
.oi-card--ink { background: var(--oi-ink); border: none; color: var(--oi-bg); }
.oi-card--blue { background: var(--oi-blue); border: none; color: var(--oi-bg); }

.oi-panel {
  background: #fff;
  border: 1.5px solid var(--oi-line);
  border-radius: 8px;
  padding: 28px;
}

.oi-stat-label {
  font: 500 10px var(--oi-mono);
  letter-spacing: 0.14em;
  color: var(--oi-muted);
}
.oi-stat-label-row {
  display: flex;
  align-items: center;
  gap: 6px;
  max-width: 100%;
  line-height: 1.3;
}
.oi-stat-label-text { flex: 0 1 auto; }
.oi-stat-label--red { color: var(--oi-red); }
.oi-stat-label--blue { color: var(--oi-blue); }
.oi-stat-label--cyan { color: var(--oi-cyan); }

.oi-stat-value {
  font: 700 36px var(--oi-display);
  color: var(--oi-ink);
  margin: 8px 0 4px;
}
.oi-stat-value--blue { color: var(--oi-blue); }
.oi-stat-value--red { color: var(--oi-red); }
.oi-stat-value--light { color: var(--oi-bg); }
.oi-stat-value--lg { font-size: 40px; margin: 10px 0 6px; }

.oi-stat-desc { font: 400 13px var(--oi-sans); color: var(--oi-muted); }
.oi-stat-sub {
  font: 500 12px var(--oi-mono);
  color: var(--oi-blue);
  margin-top: 4px;
  min-height: 0;
}
.oi-card--ink .oi-stat-sub { color: #8DA2C0; }
.oi-card--ink .oi-stat-desc,
.oi-card--blue .oi-stat-desc { color: var(--oi-soft); }

.oi-panel-title {
  font: 600 12px var(--oi-mono);
  letter-spacing: 0.2em;
  color: var(--oi-blue);
  margin-bottom: 16px;
}

/* ---------- capabilities rollout ---------- */

.oi-simple-paths {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 36px;
}
.oi-simple-path {
  padding: 28px 24px;
  border-top: 2px solid var(--oi-ink);
  background: transparent;
}
.oi-simple-path:first-child {
  border-top-color: var(--oi-red);
}
.oi-simple-path:last-child {
  border-top-color: var(--oi-cyan);
}
.oi-simple-path-label {
  font: 600 11px var(--oi-mono);
  letter-spacing: 0.14em;
  color: var(--oi-muted);
  margin-bottom: 10px;
}
.oi-simple-path-title {
  font: 600 22px/1.25 var(--oi-display);
  color: var(--oi-ink);
  margin: 0 0 10px;
}
.oi-simple-path-body {
  font: 400 15px/1.55 var(--oi-sans);
  color: var(--oi-muted);
  margin: 0;
  max-width: 28rem;
}
.oi-simple-more {
  display: flex;
  align-items: baseline;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--oi-line);
}
.oi-simple-more-label {
  font: 600 11px var(--oi-mono);
  letter-spacing: 0.14em;
  color: var(--oi-muted);
  flex-shrink: 0;
}
.oi-simple-more-items {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 28px;
  font: 500 15px var(--oi-sans);
  color: var(--oi-ink);
}
.oi-simple-foot {
  margin: 28px 0 0;
  font: 400 15px/1.5 var(--oi-sans);
  color: var(--oi-muted);
}

@media (max-width: 900px) {
  .oi-simple-paths {
    grid-template-columns: 1fr;
  }
}

.oi-usecase {
  margin-top: 40px;
}
.oi-usecase-label {
  font: 600 11px var(--oi-mono);
  letter-spacing: 0.16em;
  color: var(--oi-soft);
  margin-bottom: 10px;
}
.oi-usecase-lede {
  font: 400 16px/1.55 var(--oi-sans);
  color: var(--oi-ink);
  max-width: 52rem;
  margin: 0 0 8px;
}
.oi-usecase-analogy {
  font: 400 15px/1.55 var(--oi-sans);
  color: var(--oi-muted);
  max-width: 48rem;
  margin: 0 0 4px;
}

.oi-journey {
  margin-top: 28px;
}
.oi-journey-label {
  font: 600 11px var(--oi-mono);
  letter-spacing: 0.16em;
  color: var(--oi-muted);
  margin-bottom: 10px;
}
.oi-journey-text {
  font: 400 16px/1.55 var(--oi-sans);
  color: var(--oi-ink);
  max-width: 52rem;
  margin: 0 0 20px;
}
.oi-path-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  align-items: stretch;
}
.oi-capabilities-grid--three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.oi-capabilities { margin-top: 32px; }

.oi-capabilities-rail {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 20px;
  padding: 0 8px;
}
.oi-capabilities-rail-node {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--oi-line);
  border: 2px solid var(--oi-bg);
  box-shadow: 0 0 0 1px var(--oi-line);
  flex-shrink: 0;
}
.oi-capabilities-rail-node.is-active {
  background: var(--oi-red);
  box-shadow: 0 0 0 1px var(--oi-red);
}
.oi-capabilities-rail-node:nth-child(3) {
  background: var(--oi-cyan);
  box-shadow: 0 0 0 1px var(--oi-cyan);
}
.oi-capabilities-rail-node:nth-child(5) {
  background: var(--oi-ink);
  box-shadow: 0 0 0 1px var(--oi-ink);
}
.oi-capabilities-rail-line {
  flex: 1;
  height: 2px;
  background: var(--oi-line);
}
.oi-capabilities-rail-line:first-of-type {
  background: linear-gradient(90deg, var(--oi-red) 0%, var(--oi-cyan) 100%);
}

.oi-capabilities-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 0;
  align-items: stretch;
}

.oi-capabilities-grid--five {
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.oi-capability-card--extend { border-top: 3px solid var(--oi-blue); }
.oi-capability-card--swap { border-top: 3px solid #8DA2C0; }
.oi-capability-card--extend .oi-capability-icon {
  background: rgba(11, 61, 145, 0.08);
  color: var(--oi-blue);
}
.oi-capability-card--swap .oi-capability-icon {
  background: rgba(141, 162, 192, 0.15);
  color: #5C6B85;
}

.oi-capability-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1.5px solid var(--oi-line);
  border-radius: 10px;
  padding: 24px 22px 20px;
  min-height: 100%;
  box-sizing: border-box;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.oi-capability-card--refuel { border-top: 3px solid var(--oi-red); }
.oi-capability-card--service { border-top: 3px solid var(--oi-cyan); }
.oi-capability-card--watch { border-top: 3px solid var(--oi-ink); }
.oi-capability-card:hover {
  border-color: var(--oi-soft);
  box-shadow: 0 8px 28px rgba(10, 31, 68, 0.06);
}

.oi-capability-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}
.oi-capability-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  flex-shrink: 0;
}
.oi-capability-icon svg { width: 22px; height: 22px; }
.oi-capability-card--refuel .oi-capability-icon {
  background: rgba(11, 61, 145, 0.08);
  color: var(--oi-blue);
}
.oi-capability-card--service .oi-capability-icon {
  background: rgba(39, 170, 224, 0.1);
  color: var(--oi-cyan);
}
.oi-capability-card--watch .oi-capability-icon {
  background: rgba(10, 31, 68, 0.08);
  color: var(--oi-ink);
}

.oi-capability-step {
  font: 600 11px var(--oi-mono);
  letter-spacing: 0.14em;
  color: var(--oi-red);
}

.oi-capability-title {
  font: 600 22px var(--oi-display);
  color: var(--oi-ink);
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}
.oi-capability-body {
  font: 400 14px/1.65 var(--oi-sans);
  color: var(--oi-muted);
  margin: 0;
  flex: 1;
}
.oi-capability-foot {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--oi-line);
  font: 500 10px var(--oi-mono);
  letter-spacing: 0.12em;
  color: var(--oi-blue);
  text-transform: uppercase;
}

.oi-capability-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  color: var(--oi-soft);
  flex-shrink: 0;
}
.oi-capability-arrow svg { width: 20px; height: 20px; }

/* ---------- tracker proof panel ---------- */

.oi-proof-shell {
  background: #04070d;
  border-radius: 8px;
  padding: 10px;
  margin-top: 36px;
  border: 1px solid var(--oi-line);
}

#tracker-shell {
  position: relative;
  height: 560px;
  background: #04070d;
  border-radius: 6px;
  overflow: hidden;
  isolation: isolate;
}
@media (min-width: 1400px) {
  #tracker-shell { height: 680px; }
}

/* ---------- calculator ---------- */

.oi-demo-banner {
  background: #FFF8F6;
  border: 1.5px solid var(--oi-red);
  border-radius: 8px;
  padding: 18px 22px;
  margin-top: 24px;
}
.oi-demo-banner-title {
  font: 600 11px var(--oi-mono);
  letter-spacing: 0.14em;
  color: var(--oi-red);
  margin-bottom: 8px;
}

.oi-split-bar { display: flex; height: 10px; border-radius: 5px; overflow: hidden; }
.oi-split-legend {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  font: 500 11px var(--oi-mono);
}

.oi-field-label {
  display: block;
  font: 600 11px var(--oi-mono);
  letter-spacing: 0.14em;
  color: var(--oi-muted);
  margin-bottom: 8px;
}

.oi-select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--oi-line);
  border-radius: 6px;
  font: 500 15px var(--oi-sans);
  color: var(--oi-ink);
  background: var(--oi-bg);
  margin-bottom: 20px;
}

.oi-range { width: 100%; accent-color: var(--oi-blue); }

.oi-calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: stretch;
}
.oi-calc-inputs {
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 100%;
  box-sizing: border-box;
}
.oi-calc-inputs .oi-field-label:first-child { margin-top: 0; }
.oi-range-labels {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
}
.oi-range-labels .oi-stat-desc:first-child { justify-self: start; }
.oi-range-labels .oi-stat-desc:last-child { justify-self: end; }
.oi-range-value {
  font: 600 15px var(--oi-display);
  color: var(--oi-blue);
  text-align: center;
}

.oi-calc-results {
  display: flex;
  flex-direction: column;
  padding: 28px;
  height: 100%;
  box-sizing: border-box;
}
.oi-calc-stat-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  flex: 1;
  align-items: start;
}
.oi-calc-stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 72px;
}
.oi-calc-value {
  font: 700 32px var(--oi-display);
  color: var(--oi-bg);
  line-height: 1.1;
}
.oi-calc-savings-block {
  border-top: 1px solid rgba(245, 247, 250, 0.15);
  padding-top: 20px;
  margin-top: auto;
}
.oi-calc-savings {
  font: 700 44px var(--oi-display);
  color: var(--oi-red);
  margin: 8px 0;
  line-height: 1.1;
}
.oi-calc-extra {
  font: 400 13px/1.6 var(--oi-sans);
  color: var(--oi-soft);
}

/* ---------- dark roadmap block ---------- */

.oi-roadmap {
  background: var(--oi-ink);
  border-radius: 8px;
  padding: 32px;
  margin-top: 28px;
  color: var(--oi-bg);
}
.oi-roadmap-chart {
  background: rgba(245, 247, 250, 0.04);
  border: 1px solid var(--oi-dark-line);
  border-radius: 8px;
  padding: 24px;
}

/* ---------- misc ---------- */

.oi-chart-panel svg, .oi-panel svg { max-width: 100%; height: auto; }

.oi-team-band {
  display: flex;
  align-items: center;
  gap: 22px;
  background: var(--oi-ink);
  border-radius: 8px;
  padding: 20px 28px;
  color: var(--oi-bg);
  margin-top: 48px;
}

.oi-name-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 18px 56px;
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--oi-line);
}

.oi-footer {
  border-top: 1px solid var(--oi-line);
  padding: 40px 0 48px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.oi-footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding-bottom: 32px;
}

.oi-footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.oi-footer-name {
  font: 600 15px var(--oi-display);
}
.oi-footer-name span { color: var(--oi-blue); }

.oi-footer-flags-band {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 40px 56px;
  padding: 36px 24px;
  margin: 0 -24px;
  background: #fff;
  border: 1.5px solid var(--oi-line);
  border-radius: 10px;
}

.oi-footer-flag-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  min-width: 180px;
}

.oi-footer-flag-img {
  display: block;
  width: 180px;
  height: 120px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--oi-line);
  box-shadow: 0 4px 18px rgba(10, 31, 68, 0.12);
}

.oi-footer-flag-label {
  font: 600 11px var(--oi-mono);
  letter-spacing: 0.14em;
  color: var(--oi-muted);
  text-transform: uppercase;
  text-align: center;
}

.oi-footer-legal {
  letter-spacing: 0.14em;
  text-align: center;
  margin: 28px 0 0;
}

.oi-footer-email { font-size: 13px; }

/* ---------- spacecraft asset profiles ---------- */

.oi-asset-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.oi-asset-card {
  border: 1.5px solid var(--oi-line);
  border-radius: 8px;
  padding: 18px 20px;
  background: #fff;
}

.oi-asset-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.oi-asset-name {
  font: 600 15px var(--oi-display);
  color: var(--oi-ink);
}

.oi-asset-head-side {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
  flex-shrink: 0;
}

.oi-asset-age {
  font: 600 14px var(--oi-mono);
  color: var(--oi-red);
  white-space: nowrap;
}

.oi-asset-meta {
  font: 500 11px var(--oi-mono);
  color: var(--oi-muted);
  margin-top: 4px;
}

.oi-asset-badge {
  font: 600 10px var(--oi-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: 4px;
  flex-shrink: 0;
}
.oi-asset-badge--critical { background: #FFF0EC; color: var(--oi-red); }
.oi-asset-badge--marginal { background: #FFF8E8; color: #B8860B; }
.oi-asset-badge--nominal { background: #EEF4FF; color: var(--oi-blue); }

.oi-asset-purpose {
  font: 400 13px/1.55 var(--oi-sans);
  color: var(--oi-muted);
  margin: 10px 0 0;
}

.oi-asset-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--oi-line);
}

.oi-asset-metric-label {
  display: block;
  font: 600 9px var(--oi-mono);
  letter-spacing: 0.12em;
  color: var(--oi-muted);
  margin-bottom: 4px;
}

.oi-asset-metric-value {
  display: block;
  font: 700 16px var(--oi-display);
  color: var(--oi-ink);
}

.oi-asset-metric--red { color: var(--oi-red); }
.oi-asset-metric--amber { color: #B8860B; }
.oi-asset-metric--blue { color: var(--oi-blue); }
.oi-asset-metric--cyan { color: var(--oi-cyan); }

.oi-asset-metric-note {
  display: block;
  font: 400 10px var(--oi-mono);
  color: var(--oi-soft);
  margin-top: 3px;
}

.oi-asset-foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 16px;
  margin-top: 14px;
  font: 400 12px var(--oi-sans);
  color: var(--oi-muted);
}

.oi-asset-disclaimer {
  font: 400 11px/1.5 var(--oi-mono);
  color: var(--oi-muted);
  margin: 14px 0 0;
}

.oi-collapsed {
  display: none !important;
}

.oi-asset-toggle {
  display: inline-block;
  margin-top: 16px;
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
  font: 600 13px var(--oi-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--oi-blue);
}

.oi-asset-toggle:hover {
  color: var(--oi-ink);
}

@media (max-width: 900px) {
  .oi-asset-metrics { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- methodology info tooltips ---------- */

.oi-info-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
  vertical-align: middle;
  flex-shrink: 0;
}

.oi-info {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--oi-muted);
  cursor: help;
  flex-shrink: 0;
  transition: color 0.15s, background 0.15s;
}
.oi-info:hover,
.oi-info:focus {
  color: var(--oi-blue);
  background: rgba(11, 61, 145, 0.08);
  outline: none;
}

.oi-card--ink .oi-info,
.oi-card--blue .oi-info {
  color: rgba(245, 247, 250, 0.55);
}
.oi-card--ink .oi-info:hover,
.oi-card--blue .oi-info:hover,
.oi-card--ink .oi-info:focus,
.oi-card--blue .oi-info:focus {
  color: var(--oi-bg);
  background: rgba(245, 247, 250, 0.15);
}

.oi-info-tip {
  display: none;
  position: fixed;
  width: min(340px, calc(100vw - 32px));
  max-height: min(360px, calc(100vh - 32px));
  overflow-x: hidden;
  overflow-y: auto;
  padding: 16px 18px;
  background: var(--oi-ink);
  color: var(--oi-bg);
  border-radius: 8px;
  box-shadow: 0 12px 40px rgba(10, 31, 68, 0.32);
  z-index: 10000;
  text-align: left;
  font: 400 13px/1.55 var(--oi-sans);
  box-sizing: border-box;
  pointer-events: auto;
}

.oi-info-tip--open {
  display: block;
}

.oi-info-section + .oi-info-section {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(245, 247, 250, 0.12);
}

.oi-info-title {
  font: 600 10px var(--oi-mono);
  letter-spacing: 0.12em;
  color: var(--oi-cyan);
  margin-bottom: 6px;
  text-transform: uppercase;
}

.oi-info-body {
  color: var(--oi-soft);
  overflow-wrap: break-word;
}
.oi-info-body b {
  color: var(--oi-bg);
  font-weight: 600;
}

.oi-info-pre {
  margin: 6px 0 0;
  padding: 10px 12px;
  background: rgba(245, 247, 250, 0.06);
  border-radius: 4px;
  font: 400 11px/1.5 var(--oi-mono);
  color: #E8EEF8;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: anywhere;
  max-width: 100%;
  box-sizing: border-box;
}

/* ---------- responsive ---------- */

@media (max-width: 1200px) {
  .oi-capabilities-grid--five {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .oi-capabilities-grid--five .oi-capability-card:last-child {
    grid-column: 1 / -1;
    max-width: 50%;
    margin: 0 auto;
    width: 100%;
  }
  .oi-capabilities-grid--three {
    grid-template-columns: 1fr;
  }
  .oi-path-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .oi-h1 { font-size: 44px; }
  .oi-h2 { font-size: 30px; }
  .oi-grid2, .oi-grid3, .oi-grid4,
  .oi-calc-grid, .oi-proof-detail { grid-template-columns: 1fr; }
  .oi-capabilities-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .oi-capabilities-grid--five {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .oi-capabilities-grid--five .oi-capability-card:last-child {
    grid-column: auto;
    max-width: none;
    margin: 0;
  }
  .oi-capability-arrow {
    width: auto;
    height: 28px;
    transform: rotate(90deg);
    margin: 4px auto;
  }
  .oi-capabilities-rail { display: none; }
  .oi-orbit-row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 2fr) auto;
    gap: 8px;
  }
  .oi-hero-rings { display: none; }
  .oi-nav-shell { padding: 8px 24px; }
  .oi-nav-bar {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .oi-nav-seg:not(.oi-nav-seg--brand):not(.oi-nav-seg--cta):not(.oi-nav-seg--loc) {
    display: none;
  }
  .oi-nav-seg--loc {
    margin-left: auto;
    letter-spacing: 0.1em;
    font-size: 9px;
    padding: 0 12px;
  }
  .oi-wrap { padding: 68px 24px 0; }
  .oi-stat-strip > div { border-right: none; border-bottom: 1px solid var(--oi-line); }
  .oi-stat-strip > div:last-child { border-bottom: none; }
  #tracker-shell { height: 480px; }
  .oi-footer-top { justify-content: center; text-align: center; }
  .oi-footer-brand { justify-content: center; width: 100%; }
  .oi-footer-flags-band {
    gap: 28px 32px;
    padding: 28px 16px;
    margin: 0;
  }
  .oi-footer-flag-img {
    width: 140px;
    height: 93px;
  }
  .oi-footer-flag-item { min-width: 140px; }
  .oi-footer-email { width: 100%; text-align: center; }
}