:root {
  --ink: #183849;
  --ink-soft: #4d6875;
  --ocean: #087fa4;
  --ocean-deep: #07536d;
  --sky: #dff7fb;
  --foam: #f8f8ef;
  --paper: #fffef8;
  --sand: #f6e9c7;
  --mango: #f6b83f;
  --coral: #ef6b5e;
  --seafoam: #65c7a5;
  --line: #c7dde0;
  --shadow: 0 22px 50px rgba(24, 56, 73, 0.14);
  --display: "Trebuchet MS", "Avenir Next", "Segoe UI", sans-serif;
  --body: "Segoe UI", Inter, system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: clip;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 6% 14%, rgba(101, 199, 165, 0.13), transparent 28rem),
    linear-gradient(180deg, var(--foam), #fff 45%, #f7fbf6);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.65;
  overflow-x: hidden;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: var(--ocean-deep);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--ocean);
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 3px solid var(--coral);
  outline-offset: 4px;
  border-radius: 6px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  color: white;
  background: var(--ink);
  border-radius: 999px;
  transform: translateY(-180%);
}

.skip-link:focus {
  transform: translateY(0);
}

.shell {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}

.narrow {
  width: min(760px, 100%);
}

.site-header {
  position: relative;
  z-index: 20;
  border-bottom: 1px solid rgba(24, 56, 73, 0.12);
  background: rgba(248, 248, 239, 0.96);
}

.nav-shell {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  font-family: var(--display);
  font-size: 18px;
  font-weight: 800;
  text-decoration: none;
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  box-shadow: 0 6px 16px rgba(24, 56, 73, 0.18);
}

.brand small {
  display: block;
  color: var(--ink-soft);
  font-family: var(--body);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-links a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  padding: 7px 12px;
  color: var(--ink-soft);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  border-radius: 999px;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--ink);
  background: var(--sand);
}

main {
  min-height: 70vh;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--ink);
  font-family: var(--display);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

h1 {
  max-width: 12ch;
  font-size: clamp(2.7rem, 6.5vw, 5.1rem);
}

h2 {
  font-size: clamp(2rem, 4.2vw, 3.3rem);
}

h3 {
  font-size: clamp(1.2rem, 2vw, 1.55rem);
}

p {
  margin: 0 0 1em;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 18px;
  color: var(--ocean-deep);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 24px;
  height: 3px;
  content: "";
  background: var(--mango);
  border-radius: 3px;
}

.lede {
  max-width: 58ch;
  color: var(--ink-soft);
  font-size: clamp(1.05rem, 1.8vw, 1.28rem);
  line-height: 1.6;
}

.hero {
  position: relative;
  display: grid;
  min-height: 690px;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.75fr);
  align-items: center;
  gap: clamp(40px, 7vw, 96px);
  padding-block: 72px 86px;
}

.hero::before {
  position: absolute;
  z-index: -1;
  right: 0;
  bottom: 48px;
  width: min(680px, 54vw);
  height: 220px;
  content: "";
  background: var(--sky);
  border-radius: 50% 0 0 50%;
  transform: rotate(-5deg);
}

.hero-copy {
  padding-block: 20px;
}

.hero-copy .lede {
  margin-top: 28px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 11px 19px;
  color: white;
  background: var(--ocean-deep);
  border: 2px solid var(--ocean-deep);
  border-radius: 999px;
  box-shadow: 0 10px 24px rgba(7, 83, 109, 0.18);
  font-weight: 800;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.button:hover {
  color: white;
  background: var(--ocean);
  border-color: var(--ocean);
  box-shadow: 0 14px 28px rgba(7, 83, 109, 0.24);
  transform: translateY(-2px);
}

.button.secondary {
  color: var(--ink);
  background: transparent;
  border-color: rgba(24, 56, 73, 0.28);
  box-shadow: none;
}

.button.secondary:hover {
  background: var(--sand);
  border-color: var(--ink);
}

.hero-note {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 24px;
  color: var(--ink-soft);
  font-size: 14px;
}

.hero-note .route-dots {
  width: 54px;
  border-top: 3px dotted var(--ocean);
}

.hero-visual {
  position: relative;
  margin: 0;
}

.hero-visual::before {
  position: absolute;
  z-index: -1;
  inset: -16px 18px 36px -22px;
  content: "";
  background: var(--mango);
  border-radius: 48% 44% 42% 50%;
  transform: rotate(-4deg);
}

.hero-visual img {
  width: 100%;
  max-height: 610px;
  object-fit: cover;
  object-position: 50% 61%;
  border: 7px solid var(--paper);
  border-radius: 46% 42% 26px 26px;
  box-shadow: var(--shadow);
}

figcaption {
  margin-top: 10px;
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.45;
}

.section {
  padding-block: 86px;
}

.section.alt {
  background: var(--sky);
  border-block: 1px solid rgba(8, 127, 164, 0.12);
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 36px;
  margin-bottom: 38px;
}

.section-head p {
  max-width: 48ch;
  margin: 0;
  color: var(--ink-soft);
}

.briefing {
  position: relative;
  margin-top: -12px;
  padding: 30px clamp(24px, 4vw, 46px);
  background: var(--ink);
  border-radius: 26px;
  box-shadow: var(--shadow);
  color: white;
}

.briefing::after {
  position: absolute;
  top: -14px;
  right: 10%;
  width: 28px;
  height: 28px;
  content: "";
  background: var(--mango);
  border: 6px solid var(--foam);
  border-radius: 50%;
}

.briefing-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 22px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.briefing h2 {
  color: white;
  font-size: clamp(1.55rem, 3vw, 2.15rem);
}

.verified-stamp,
.status-badge {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  gap: 7px;
  padding: 5px 10px;
  color: var(--ink);
  background: var(--seafoam);
  border-radius: 999px;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.facts-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin-top: 18px;
  background: rgba(255, 255, 255, 0.16);
}

.fact {
  min-width: 0;
  padding: 18px 22px;
  background: var(--ink);
}

.fact span {
  display: block;
  color: #b9d4dc;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.fact strong {
  display: block;
  margin-top: 5px;
  color: white;
  font-family: var(--display);
  font-size: 19px;
}

.route-map {
  position: relative;
}

.route-map::before {
  position: absolute;
  z-index: 0;
  top: 29%;
  left: 6%;
  width: 88%;
  height: 44%;
  content: "";
  border: 3px dashed rgba(8, 127, 164, 0.25);
  border-left-color: transparent;
  border-radius: 50%;
  transform: rotate(-4deg);
}

.route-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.route-card {
  position: relative;
  min-height: 230px;
  padding: 28px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: 0 12px 30px rgba(24, 56, 73, 0.08);
}

a.route-card {
  color: var(--ink);
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

a.route-card:hover {
  color: var(--ink);
  border-color: var(--ocean);
  box-shadow: 0 18px 34px rgba(24, 56, 73, 0.14);
  transform: translateY(-4px);
}

.route-card:nth-child(2),
.route-card:nth-child(3) {
  transform: translateY(22px);
}

a.route-card:nth-child(3):hover {
  transform: translateY(18px);
}

.route-number {
  display: grid;
  width: 44px;
  height: 44px;
  margin-bottom: 38px;
  place-items: center;
  color: var(--ink);
  background: var(--mango);
  border: 4px solid var(--paper);
  border-radius: 50%;
  box-shadow: 0 0 0 1px var(--line);
  font-family: var(--display);
  font-weight: 900;
}

.route-card h3 {
  margin-bottom: 10px;
}

.route-card p {
  margin: 0;
  color: var(--ink-soft);
}

.card-state {
  position: absolute;
  top: 24px;
  right: 24px;
  padding: 4px 9px;
  color: var(--ocean-deep);
  background: var(--sky);
  border-radius: 999px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.card-state.researching {
  color: #784132;
  background: #fde7df;
}

.evidence-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(36px, 8vw, 96px);
  align-items: start;
}

.evidence-key {
  display: grid;
  gap: 12px;
}

.evidence-row {
  display: grid;
  grid-template-columns: 104px 1fr;
  gap: 16px;
  padding: 17px 0;
  border-bottom: 1px solid var(--line);
}

.evidence-row p {
  margin: 0;
  color: var(--ink-soft);
}

.label {
  display: inline-flex;
  width: fit-content;
  min-height: 28px;
  align-items: center;
  padding: 4px 9px;
  color: var(--ink);
  background: var(--seafoam);
  border-radius: 999px;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.label.field {
  background: #ffd9d1;
}

.label.unknown {
  background: var(--sand);
}

.source-list {
  margin: 26px 0 0;
  padding-left: 1.2em;
}

.source-list li + li {
  margin-top: 10px;
}

.page-hero {
  padding-block: 70px 46px;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 34px;
  padding: 0;
  color: var(--ink-soft);
  font-size: 13px;
  list-style: none;
}

.breadcrumbs li:not(:last-child)::after {
  margin-left: 8px;
  content: "/";
  color: #8ca1aa;
}

.page-hero h1 {
  max-width: 14ch;
  font-size: clamp(2.8rem, 6vw, 5rem);
}

.page-hero .lede {
  margin-top: 22px;
}

.wide-visual {
  position: relative;
  margin: 34px 0 0;
  overflow: hidden;
  background: var(--sky);
  border: 6px solid var(--paper);
  border-radius: 26px;
  box-shadow: var(--shadow);
}

.wide-visual img {
  width: 100%;
  aspect-ratio: 3.1 / 1;
  object-fit: cover;
}

.wide-visual figcaption {
  position: absolute;
  right: 12px;
  bottom: 12px;
  max-width: 360px;
  margin: 0;
  padding: 8px 11px;
  color: white;
  background: rgba(24, 56, 73, 0.9);
  border-radius: 8px;
}

.status-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 34px;
}

.status-badge.live {
  background: var(--mango);
}

.status-badge.researching {
  color: #784132;
  background: #fde7df;
}

.route-lanes {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: route;
}

.route-lane {
  display: grid;
  grid-template-columns: 70px minmax(180px, 0.72fr) minmax(0, 1.28fr) 120px;
  align-items: center;
  gap: 24px;
  min-height: 142px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  counter-increment: route;
}

.route-lane:last-child {
  border-bottom: 1px solid var(--line);
}

.route-lane::before {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  content: counter(route, decimal-leading-zero);
  background: var(--sky);
  border: 1px solid var(--line);
  border-radius: 50%;
  font-family: var(--display);
  font-weight: 900;
}

.route-lane h3 {
  margin-bottom: 7px;
}

.route-lane p {
  margin: 0;
  color: var(--ink-soft);
}

.route-lane .lane-link {
  justify-self: end;
  font-size: 14px;
  font-weight: 800;
}

.route-lane a.lane-link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  padding-block: 8px;
}

.decision-strip {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 18px;
  align-items: center;
  margin-top: 48px;
  padding: 30px;
  background: var(--ink);
  border-radius: 24px;
  color: white;
}

.decision-strip strong {
  display: block;
  color: var(--mango);
  font-family: var(--display);
  font-size: 18px;
}

.decision-strip span {
  color: #cfe0e5;
  font-size: 14px;
}

.decision-strip b {
  color: var(--seafoam);
  font-size: 24px;
}

.owner-hero {
  padding-block: 62px 38px;
}

.owner-hero h1 {
  max-width: 15ch;
  margin-top: 18px;
  font-size: clamp(2.6rem, 5.8vw, 4.8rem);
}

.answer-panel {
  position: relative;
  margin-top: 32px;
  padding: clamp(24px, 4vw, 38px);
  background: var(--sand);
  border: 1px solid #e1c98f;
  border-left: 8px solid var(--mango);
  border-radius: 0 22px 22px 0;
}

.answer-panel .answer-label {
  margin-bottom: 8px;
  color: #765515;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.answer-panel p:last-child {
  margin-bottom: 0;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 760px) minmax(240px, 300px);
  justify-content: space-between;
  gap: clamp(42px, 8vw, 100px);
  padding-block: 46px 90px;
}

.article-body > section + section {
  margin-top: 68px;
}

.article-body h2 {
  margin-bottom: 20px;
  font-size: clamp(1.9rem, 3.6vw, 2.8rem);
}

.article-body h3 {
  margin: 30px 0 10px;
}

.article-body p,
.article-body li {
  max-width: 68ch;
}

.dependency-route {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.dependency-route li {
  position: relative;
  min-height: 150px;
  padding: 54px 18px 20px 0;
  border-top: 3px dashed var(--line);
}

.dependency-route li::before {
  position: absolute;
  top: -20px;
  left: 0;
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  content: attr(data-step);
  background: var(--mango);
  border: 4px solid var(--paper);
  border-radius: 50%;
  box-shadow: 0 0 0 1px var(--line);
  font-family: var(--display);
  font-weight: 900;
}

.dependency-route strong {
  display: block;
  margin-bottom: 5px;
  font-family: var(--display);
}

.dependency-route span {
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.45;
}

.tool-list {
  display: grid;
  gap: 0;
  margin-top: 24px;
  border-block: 1px solid var(--line);
}

.tool-item {
  display: grid;
  grid-template-columns: minmax(130px, 0.42fr) minmax(0, 1fr);
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.tool-item:last-child {
  border-bottom: 0;
}

.tool-item h3 {
  margin: 0;
}

.tool-item p {
  margin: 0;
  color: var(--ink-soft);
}

.evidence-visual {
  margin: 28px 0 0;
}

.evidence-visual img {
  width: 100%;
  aspect-ratio: 798 / 349;
  object-fit: cover;
  border-radius: 18px;
  box-shadow: 0 14px 30px rgba(24, 56, 73, 0.13);
}

.field-note {
  padding: 26px;
  background: #fff4ef;
  border: 1px solid #f0b6a9;
  border-radius: 20px;
}

.field-note .label {
  margin-bottom: 14px;
}

.field-note ul {
  margin-bottom: 0;
}

.evidence-rail {
  align-self: start;
  padding: 24px;
  background: var(--sky);
  border: 1px solid var(--line);
  border-radius: 22px;
}

.evidence-rail h2 {
  margin-bottom: 18px;
  font-size: 1.35rem;
}

.rail-item {
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.rail-item p {
  margin: 8px 0 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.55;
}

.rail-image {
  margin: 22px 0 0;
}

.rail-image img {
  width: 100%;
  aspect-ratio: 789 / 329;
  object-fit: cover;
  border-radius: 14px;
}

.callout {
  padding: 28px;
  background: var(--ink);
  border-radius: 22px;
  color: white;
}

.callout h2,
.callout h3 {
  color: white;
}

.callout p:last-child {
  margin-bottom: 0;
}

.sequence-list,
.repair-route {
  position: relative;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.sequence-list::before,
.repair-route::before {
  position: absolute;
  top: 24px;
  bottom: 24px;
  left: 23px;
  width: 3px;
  content: "";
  background: repeating-linear-gradient(to bottom, var(--line) 0 8px, transparent 8px 15px);
}

.sequence-list li,
.repair-route li {
  position: relative;
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 20px;
  padding: 0 0 30px;
}

.sequence-list li > span,
.repair-route .route-number {
  z-index: 1;
  display: grid;
  width: 48px;
  height: 48px;
  margin: 0;
  place-items: center;
  color: var(--ink);
  background: var(--mango);
  border: 4px solid var(--paper);
  border-radius: 50%;
  box-shadow: 0 0 0 1px var(--line);
  font-family: var(--display);
  font-size: 14px;
  font-weight: 900;
}

.sequence-list strong {
  display: block;
  margin-bottom: 5px;
  font-family: var(--display);
  font-size: 18px;
}

.sequence-list p,
.repair-route p {
  margin: 0;
  color: var(--ink-soft);
}

.repair-route li {
  padding-bottom: 38px;
}

.repair-route h3 {
  margin: 10px 0 8px;
}

.task-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 24px;
}

.task-links a {
  display: flex;
  min-height: 156px;
  flex-direction: column;
  justify-content: space-between;
  gap: 24px;
  padding: 20px;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 18px;
  text-decoration: none;
}

.task-links a:hover {
  color: var(--ink);
  border-color: var(--ocean);
  box-shadow: 0 12px 24px rgba(24, 56, 73, 0.1);
}

.task-links span {
  color: var(--ink-soft);
  font-size: 14px;
}

.task-links strong {
  font-family: var(--display);
  line-height: 1.3;
}

.flight-visual img {
  aspect-ratio: 606 / 340;
}

.signal-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin-top: 26px;
  border-block: 1px solid var(--line);
}

.signal-list > div {
  padding: 24px 20px;
  border-right: 1px solid var(--line);
}

.signal-list > div:first-child {
  padding-left: 0;
}

.signal-list > div:last-child {
  padding-right: 0;
  border-right: 0;
}

.signal-list strong {
  font-family: var(--display);
  font-size: 19px;
}

.signal-list p {
  margin: 8px 0 0;
  color: var(--ink-soft);
  font-size: 15px;
}

.material-route {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.material-list {
  margin-top: 26px;
  border-block: 1px solid var(--line);
}

.material-item {
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}

.material-item:last-child {
  border-bottom: 0;
}

.material-title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.material-title h3 {
  margin: 0;
}

.material-item p {
  margin-bottom: 9px;
}

.material-item .boundary {
  margin-top: 16px;
  padding-left: 14px;
  color: var(--ink-soft);
  border-left: 3px solid var(--coral);
  font-size: 14px;
}

.site-footer {
  padding-block: 48px;
  color: #c7dbe1;
  background: var(--ink);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: start;
}

.site-footer .brand {
  color: white;
}

.site-footer .brand small {
  color: #9db8c2;
}

.footer-note {
  max-width: 64ch;
  margin-top: 18px;
  font-size: 13px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: end;
  gap: 12px 18px;
}

.site-footer a {
  color: white;
}

.not-found {
  padding-block: 18vh;
}

.not-found h1 {
  margin-bottom: 24px;
}

@media (max-width: 900px) {
  .hero {
    min-height: auto;
    grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.7fr);
    gap: 36px;
  }

  .facts-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .evidence-grid,
  .article-layout {
    grid-template-columns: 1fr;
  }

  .evidence-rail {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0 24px;
  }

  .evidence-rail h2,
  .rail-image {
    grid-column: 1 / -1;
  }

  .route-lane {
    grid-template-columns: 58px minmax(150px, 0.8fr) minmax(0, 1.2fr);
  }

  .route-lane .lane-link {
    grid-column: 2 / -1;
    justify-self: start;
  }
}

@media (max-width: 680px) {
  body {
    font-size: 16px;
  }

  .shell {
    width: min(100% - 40px, 1180px);
  }

  .nav-shell {
    min-height: 0;
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    padding-block: 14px 10px;
  }

  .nav-links {
    width: 100%;
    gap: 2px;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .nav-links::-webkit-scrollbar {
    display: none;
  }

  .nav-links a {
    min-height: 44px;
    padding: 6px 10px;
    white-space: nowrap;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 42px;
    padding-block: 54px 72px;
  }

  .hero::before {
    right: -20px;
    bottom: 20px;
    width: calc(100% + 40px);
  }

  .hero-visual {
    width: min(88%, 420px);
    justify-self: center;
  }

  .hero-visual img {
    max-height: 480px;
    aspect-ratio: 4 / 5;
    object-position: 50% 65%;
    border-radius: 42% 42% 24px 24px;
  }

  .briefing {
    padding: 24px 20px;
    border-radius: 20px;
  }

  .briefing-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .facts-grid {
    grid-template-columns: 1fr;
  }

  .fact {
    padding-inline: 0;
  }

  .section {
    padding-block: 68px;
  }

  .section-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 16px;
  }

  .route-map::before {
    top: 5%;
    left: 24px;
    width: 30%;
    height: 88%;
    border-left-color: rgba(8, 127, 164, 0.25);
  }

  .route-grid {
    grid-template-columns: 1fr;
  }

  .route-card,
  .route-card:nth-child(2),
  .route-card:nth-child(3),
  a.route-card:nth-child(3):hover {
    min-height: 0;
    padding: 22px;
    transform: none;
  }

  .route-number {
    margin-bottom: 28px;
  }

  .evidence-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .page-hero,
  .owner-hero {
    padding-block: 48px 34px;
  }

  .wide-visual img {
    aspect-ratio: 16 / 9;
  }

  .wide-visual figcaption {
    position: static;
    max-width: none;
    padding: 10px 12px;
    border-radius: 0;
  }

  .route-lane {
    grid-template-columns: 48px 1fr;
    gap: 16px;
    padding-block: 24px;
  }

  .route-lane p,
  .route-lane .lane-link {
    grid-column: 2;
  }

  .decision-strip {
    grid-template-columns: 1fr;
  }

  .decision-strip b {
    transform: rotate(90deg);
  }

  .article-layout {
    gap: 48px;
    padding-block: 30px 70px;
  }

  .dependency-route {
    grid-template-columns: 1fr;
    margin-left: 18px;
  }

  .dependency-route li {
    min-height: 110px;
    padding: 14px 10px 30px 46px;
    border-top: 0;
    border-left: 3px dashed var(--line);
  }

  .dependency-route li::before {
    top: 0;
    left: -20px;
  }

  .tool-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .task-links,
  .signal-list {
    grid-template-columns: 1fr;
  }

  .task-links a {
    min-height: 128px;
  }

  .signal-list > div,
  .signal-list > div:first-child,
  .signal-list > div:last-child {
    padding: 20px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .signal-list > div:last-child {
    border-bottom: 0;
  }

  .evidence-rail {
    grid-template-columns: 1fr;
  }

  .evidence-rail h2,
  .rail-image {
    grid-column: auto;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-links {
    justify-content: start;
  }
}

@media (min-width: 400px) and (max-width: 680px) {
  .facts-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .fact {
    padding: 16px 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}