:root {
  --ink: #111413;
  --ink-soft: #242a27;
  --paper: #f6f7f4;
  --white: #ffffff;
  --mist: #e7ece7;
  --line: #cbd2cc;
  --line-dark: #39423d;
  --muted: #65706a;
  --muted-dark: #a8b2ac;
  --red: #e44c3b;
  --red-deep: #b93024;
  --teal: #1ab3a2;
  --teal-dark: #087d73;
  --yellow: #f2c14b;
  --blue: #2e79d2;
  --max: 1240px;
  --shadow: 0 18px 48px rgba(17, 20, 19, 0.12);
}

* {
  box-sizing: border-box;
  letter-spacing: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, "SF Pro Display", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body,
button,
input,
select {
  font: inherit;
}

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

a {
  color: inherit;
}

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

button:focus-visible,
input:focus-visible,
select:focus-visible,
a:focus-visible {
  outline: 3px solid var(--yellow);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 8px 12px;
  background: var(--white);
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: none;
}

.shell {
  width: min(calc(100% - 48px), var(--max));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  min-height: 68px;
  padding: 0 24px;
  color: var(--white);
  background: rgba(15, 18, 17, 0.96);
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  min-width: 206px;
  color: inherit;
  text-decoration: none;
  font-weight: 800;
}

.brand-mark {
  width: 10px;
  height: 10px;
  background: var(--red);
  box-shadow: 0 0 0 4px rgba(228, 76, 59, 0.16);
}

.brand small {
  color: var(--muted-dark);
  font-size: 9px;
  font-weight: 650;
}

.nav-scroll {
  display: flex;
  justify-content: center;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.nav-scroll a {
  flex: 0 0 auto;
  padding: 9px 12px;
  color: #d5dcd7;
  text-decoration: none;
  font-size: 13px;
  border-bottom: 2px solid transparent;
}

.nav-scroll a:hover,
.nav-scroll a.active {
  color: var(--white);
  border-color: var(--red);
}

.snapshot {
  color: var(--muted-dark);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

.hero {
  position: relative;
  height: min(820px, calc(100svh - 92px));
  min-height: 530px;
  overflow: hidden;
  color: var(--white);
  background: #2e3a3a;
}

.hero-media,
.hero-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-media {
  object-fit: cover;
  object-position: center 54%;
}

.hero-shade {
  background: rgba(10, 15, 13, 0.56);
}

.hero-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: calc(100% - 126px);
  padding-top: 20px;
}

.evidence-chip,
.evidence-legend span {
  display: inline-flex;
  align-items: center;
  width: max-content;
  padding: 5px 8px;
  border: 1px solid currentColor;
  border-radius: 2px;
  font-size: 11px;
  font-weight: 800;
  line-height: 1.2;
  text-transform: uppercase;
}

.evidence-a {
  color: #126f45;
  background: #dcf3e5;
}

.hero .evidence-a {
  color: #eafff1;
  background: rgba(13, 107, 64, 0.74);
}

.evidence-b {
  color: #745600;
  background: #fff0bc;
}

.evidence-c {
  color: #4f5f71;
  background: #e6edf5;
}

.hero-eyebrow {
  margin: 24px 0 0;
  color: #f0f3f1;
  font-size: 14px;
  font-weight: 700;
}

.hero h1 {
  max-width: 900px;
  margin: 4px 0 10px;
  font-family: "Songti SC", "Noto Serif CJK SC", Georgia, serif;
  font-size: 96px;
  font-weight: 800;
  line-height: 1.05;
}

.hero-lead {
  max-width: 760px;
  margin: 0;
  color: #f7faf8;
  font-size: 23px;
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 16px;
  border: 1px solid transparent;
  border-radius: 4px;
  cursor: pointer;
  text-decoration: none;
  font-size: 14px;
  font-weight: 750;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.button:hover:not(:disabled) {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--white);
  background: var(--red);
  border-color: var(--red);
}

.button-primary:hover:not(:disabled) {
  background: var(--red-deep);
  border-color: var(--red-deep);
}

.button-quiet {
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.48);
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.hero-facts {
  position: absolute;
  z-index: 2;
  right: 0;
  bottom: 0;
  left: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  min-height: 106px;
  border-top: 1px solid rgba(255, 255, 255, 0.34);
}

.hero-facts > div {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 18px 24px;
  border-right: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(8, 12, 10, 0.62);
}

.hero-facts > div:last-child {
  border-right: 0;
}

.hero-facts span {
  color: #c7d1cb;
  font-size: 11px;
  font-weight: 700;
}

.hero-facts strong {
  margin-top: 3px;
  font-size: 17px;
  line-height: 1.35;
}

.photo-credit {
  position: absolute;
  z-index: 2;
  top: 16px;
  right: 18px;
  margin: 0;
  color: rgba(255, 255, 255, 0.76);
  font-size: 10px;
  writing-mode: vertical-rl;
}

.mentor-strip {
  padding: 22px 0;
  color: var(--white);
  background: var(--red);
}

.mentor-grid {
  display: grid;
  grid-template-columns: 0.75fr repeat(3, 1fr);
  gap: 26px;
  align-items: center;
}

.mentor-grid p {
  margin: 0;
  font-size: 13px;
  line-height: 1.55;
}

.mentor-grid strong {
  display: block;
  font-size: 15px;
}

.mentor-label {
  font-weight: 900;
  text-transform: uppercase;
}

.section-light,
.section-paper,
.section-dark {
  padding: 112px 0;
}

.section-light {
  background: var(--paper);
}

.section-paper {
  background: var(--white);
}

.section-dark {
  color: var(--white);
  background: var(--ink);
}

.section-heading {
  display: grid;
  grid-template-columns: 180px minmax(0, 1.45fr) minmax(280px, 0.8fr);
  gap: 24px;
  align-items: start;
  margin-bottom: 56px;
}

.section-heading.compact-heading {
  grid-template-columns: 180px minmax(0, 1.25fr) minmax(280px, 0.75fr);
  margin-bottom: 40px;
}

.section-index {
  margin: 7px 0 0;
  color: var(--red);
  font-size: 12px;
  font-weight: 850;
  text-transform: uppercase;
}

.section-heading h2,
.quiz-intro h2 {
  margin: 0;
  font-family: "Songti SC", "Noto Serif CJK SC", Georgia, serif;
  font-size: 45px;
  line-height: 1.22;
  text-wrap: balance;
}

.section-heading > p:last-child {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.section-heading.inverse > p:last-child {
  color: var(--muted-dark);
}

.roadmap {
  padding-top: 84px;
  padding-bottom: 96px;
}

.roadmap-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.roadmap-list li {
  display: grid;
  min-height: 164px;
  padding: 24px;
  border-right: 1px solid var(--line);
}

.roadmap-list li:last-child {
  border-right: 0;
}

.roadmap-list span {
  color: var(--red);
  font-size: 11px;
  font-weight: 850;
}

.roadmap-list strong {
  align-self: end;
  font-size: 20px;
}

.roadmap-list small {
  color: var(--muted);
  font-size: 12px;
}

.learning-layout {
  display: grid;
  grid-template-columns: minmax(340px, 0.85fr) minmax(460px, 1.15fr);
  min-height: 620px;
  border: 1px solid var(--line-dark);
}

.rocket-workbench {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 620px;
  overflow: hidden;
  background: #171c1a;
  border-right: 1px solid var(--line-dark);
}

.blueprint-grid {
  position: absolute;
  inset: 0;
  opacity: 0.25;
  background-size: 42px 42px;
  background-image: linear-gradient(#34413a 1px, transparent 1px), linear-gradient(90deg, #34413a 1px, transparent 1px);
}

.rocket-model {
  position: relative;
  z-index: 1;
  width: 114px;
  height: 492px;
  filter: drop-shadow(0 18px 30px rgba(0, 0, 0, 0.35));
}

.rocket-part {
  position: absolute;
  right: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: transparent;
  background: #d9dedb;
  border: 2px solid #99a49e;
  transition: background 180ms ease, border 180ms ease, transform 180ms ease;
}

.rocket-part::after {
  position: absolute;
  left: calc(100% + 30px);
  width: 72px;
  height: 1px;
  background: #66736c;
  content: "";
}

.rocket-part span {
  position: absolute;
  left: calc(100% + 110px);
  color: #98a69f;
  font-size: 11px;
  white-space: nowrap;
}

.rocket-part.active {
  z-index: 2;
  background: var(--red);
  border-color: #ff9c91;
  transform: scaleX(1.06);
}

.rocket-part.active span {
  color: var(--white);
  font-weight: 800;
}

.rocket-model.fuel-mode .stage-one-part {
  z-index: 2;
  background: var(--red);
  border-color: #ff9c91;
  transform: scaleX(1.04);
}

.rocket-model.fuel-mode .stage-two-part {
  z-index: 2;
  background: var(--teal-dark);
  border-color: #78d4c9;
  transform: scaleX(1.04);
}

.rocket-model.fuel-mode .stage-one-part span,
.rocket-model.fuel-mode .stage-two-part span {
  color: var(--white);
  font-weight: 800;
}

.payload-part {
  top: 0;
  height: 90px;
  border-radius: 58px 58px 2px 2px;
}

.stage-two-part {
  top: 90px;
  height: 122px;
}

.stage-one-part {
  top: 212px;
  height: 250px;
  border-radius: 0 0 10px 10px;
}

.engine-cluster {
  position: absolute;
  right: 2px;
  bottom: 0;
  left: 2px;
  display: flex;
  justify-content: space-around;
}

.engine-cluster i {
  width: 17px;
  height: 32px;
  background: #828d87;
  clip-path: polygon(25% 0, 75% 0, 100% 100%, 0 100%);
}

.model-scale {
  position: absolute;
  right: 22px;
  bottom: 18px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  color: #718079;
  font-size: 10px;
}

.lesson-console {
  display: flex;
  flex-direction: column;
  padding: 38px 42px 46px;
  background: #1c221f;
}

.segmented {
  display: inline-flex;
  width: max-content;
  max-width: 100%;
  padding: 3px;
  overflow-x: auto;
  border: 1px solid var(--line-dark);
  border-radius: 5px;
  background: #131715;
  scrollbar-width: none;
}

.segmented::-webkit-scrollbar {
  display: none;
}

.segmented button {
  flex: 0 0 auto;
  min-height: 36px;
  padding: 7px 13px;
  color: var(--muted-dark);
  background: transparent;
  border: 0;
  border-radius: 3px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 750;
}

.segmented button:hover {
  color: var(--white);
}

.segmented button[aria-selected="true"],
.segmented button.active {
  color: var(--ink);
  background: var(--white);
}

.lesson-copy {
  display: flex;
  flex: 1;
  flex-direction: column;
  justify-content: center;
  max-width: 610px;
}

.lesson-kicker,
.tool-label {
  margin: 0 0 7px;
  color: var(--teal);
  font-size: 11px;
  font-weight: 850;
  text-transform: uppercase;
}

.lesson-copy h3,
.orbit-copy h3,
.mission-console h3,
.recovery-copy h3,
.timeline-header h3,
.recovery-route-compare h3,
.watchlist-panel h3,
.quiz-card h3 {
  margin: 0;
  font-size: 30px;
  line-height: 1.28;
  text-wrap: balance;
}

.lesson-copy > p:not(.lesson-kicker) {
  color: #d0d8d3;
}

.lesson-copy dl {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin: 34px 0 0;
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.lesson-copy dl div {
  padding: 18px 16px;
  border-right: 1px solid var(--line-dark);
}

.lesson-copy dl div:last-child {
  border-right: 0;
}

.lesson-copy dt {
  color: var(--muted-dark);
  font-size: 10px;
}

.lesson-copy dd {
  margin: 3px 0 0;
  font-size: 14px;
  font-weight: 800;
}

.orbit-lab {
  display: grid;
  grid-template-columns: minmax(360px, 0.8fr) minmax(520px, 1.2fr);
  margin-top: 32px;
  border: 1px solid var(--line-dark);
  background: #171c1a;
}

.orbit-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 40px;
  border-right: 1px solid var(--line-dark);
}

.orbit-copy > p:not(.tool-label, .model-note) {
  color: #d2dbd6;
}

.range-field {
  margin-top: 26px;
}

.range-field label {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: inherit;
  font-size: 12px;
  font-weight: 750;
}

.range-field output {
  color: var(--yellow);
  font-variant-numeric: tabular-nums;
}

input[type="range"] {
  width: 100%;
  height: 22px;
  margin: 12px 0 5px;
  cursor: pointer;
  accent-color: var(--red);
}

.range-marks {
  display: flex;
  justify-content: space-between;
  color: #7d8a83;
  font-size: 9px;
}

.model-note {
  margin: 24px 0 0;
  color: #77847d;
  font-size: 10px;
}

#orbitCanvas {
  align-self: center;
  width: 100%;
  height: auto;
  aspect-ratio: 720 / 420;
}

.concept-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 32px;
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.concept-row article {
  min-height: 196px;
  padding: 26px;
  border-right: 1px solid var(--line-dark);
}

.concept-row article:last-child {
  border-right: 0;
}

.concept-row span {
  color: var(--red);
  font-size: 11px;
  font-weight: 850;
}

.concept-row h3 {
  margin: 26px 0 5px;
  font-size: 18px;
}

.concept-row p {
  margin: 0;
  color: var(--muted-dark);
  font-size: 12px;
}

.mission-lab {
  display: grid;
  grid-template-columns: minmax(500px, 1.3fr) minmax(360px, 0.7fr);
  min-height: 540px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--white);
  box-shadow: var(--shadow);
}

.mission-visual {
  position: relative;
  min-height: 540px;
  overflow: hidden;
  background: #d9e9e9;
  border-right: 1px solid var(--line);
}

.mission-skyline {
  position: absolute;
  inset: 0;
  opacity: 0.58;
  background-size: 36px 36px;
  background-image: linear-gradient(rgba(21, 83, 86, 0.12) 1px, transparent 1px), linear-gradient(90deg, rgba(21, 83, 86, 0.12) 1px, transparent 1px);
}

.trajectory-line {
  position: absolute;
  top: 50px;
  right: 90px;
  width: 540px;
  height: 390px;
  border-right: 2px dashed rgba(228, 76, 59, 0.5);
  border-bottom: 2px dashed rgba(228, 76, 59, 0.5);
  border-radius: 0 0 82% 0;
  transform: rotate(12deg);
}

.returning-stage {
  position: absolute;
  z-index: 4;
  top: 70px;
  left: 14%;
  width: 24px;
  height: 122px;
  background: #eff3f0;
  border: 2px solid #555f5a;
  border-radius: 12px 12px 3px 3px;
  transform: rotate(122deg);
  transform-origin: center;
  box-shadow: 0 10px 20px rgba(17, 20, 19, 0.18);
  transition: top 220ms ease, left 220ms ease, transform 220ms ease;
}

.returning-stage::before,
.returning-stage::after {
  position: absolute;
  top: 20px;
  width: 20px;
  height: 5px;
  background: #34413b;
  content: "";
}

.returning-stage::before {
  right: 18px;
  transform: rotate(14deg);
}

.returning-stage::after {
  left: 18px;
  transform: rotate(-14deg);
}

.returning-stage span {
  position: absolute;
  bottom: -22px;
  left: 5px;
  width: 10px;
  height: 24px;
  opacity: 0;
  background: var(--red);
  clip-path: polygon(50% 100%, 0 0, 100% 0);
  transition: opacity 160ms ease;
}

.mission-visual.burning .returning-stage span {
  opacity: 1;
}

.recovery-vessel {
  position: absolute;
  z-index: 3;
  right: 42px;
  bottom: 62px;
  width: 210px;
  height: 172px;
}

.net-frame {
  position: absolute;
  right: 18px;
  bottom: 33px;
  left: 18px;
  height: 130px;
  border: 8px solid #28322d;
  background: rgba(255, 255, 255, 0.15);
}

.net-frame i {
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 1px;
  background: #5c6963;
}

.net-frame i:nth-child(2) {
  transform: rotate(45deg);
}

.net-frame i:nth-child(3) {
  transform: rotate(-45deg);
}

.ship-hull {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 38px;
  background: #b74439;
  clip-path: polygon(0 0, 100% 0, 92% 80%, 15% 100%, 4% 62%);
}

.mission-water {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 95px;
  background: #2d7f83;
  border-top: 6px solid rgba(255, 255, 255, 0.58);
}

.mission-console {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 42px;
}

.mission-time {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.mission-time span {
  color: var(--muted);
  font-size: 11px;
  font-weight: 750;
}

.mission-time strong {
  color: var(--red);
  font-size: 38px;
  font-variant-numeric: tabular-nums;
}

.phase-count {
  margin: 32px 0 5px;
  color: var(--teal-dark);
  font-size: 11px;
  font-weight: 800;
}

.mission-console > p:not(.phase-count) {
  min-height: 78px;
  color: var(--muted);
  font-size: 14px;
}

.phase-dots {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.phase-dots li {
  height: 5px;
  background: var(--mist);
}

.phase-dots li.active {
  background: var(--red);
}

.recovery-explainer {
  display: grid;
  grid-template-columns: minmax(460px, 1.05fr) minmax(420px, 0.95fr);
  margin-top: 64px;
}

.recovery-photo {
  margin: 0;
}

.recovery-photo img {
  width: 100%;
  height: 100%;
  min-height: 480px;
  object-fit: cover;
}

.recovery-photo figcaption {
  padding: 9px 0;
  color: var(--muted);
  font-size: 10px;
}

.recovery-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 48px 0 48px 56px;
}

.recovery-copy ol {
  margin: 28px 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.recovery-copy li {
  display: grid;
  grid-template-columns: 68px 1fr;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}

.recovery-copy li strong {
  color: var(--red);
}

.recovery-copy li span {
  color: var(--muted);
}

.text-link {
  width: max-content;
  color: var(--teal-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  font-size: 13px;
  font-weight: 800;
}

.truth-ladder {
  display: grid;
  grid-template-columns: 1.2fr repeat(5, 1fr);
  margin-top: 72px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.ladder-intro,
.ladder-step {
  min-height: 154px;
  padding: 24px;
  border-right: 1px solid var(--line);
}

.ladder-step:last-child {
  border-right: 0;
}

.ladder-intro h3 {
  margin: 0;
  font-size: 21px;
}

.ladder-step {
  display: flex;
  flex-direction: column;
}

.ladder-step > span {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 50%;
  font-size: 10px;
  font-weight: 850;
}

.ladder-step strong {
  margin-top: auto;
  font-size: 13px;
}

.ladder-step small {
  color: var(--muted);
  font-size: 10px;
}

.ladder-step.done {
  color: var(--white);
  background: var(--teal-dark);
}

.ladder-step.done span {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.52);
}

.ladder-step.done small {
  color: #c5ece6;
}

.maturity-scoreboard {
  display: grid;
  grid-template-columns: 1fr 1.3fr 1fr;
  align-items: stretch;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.score-cn,
.score-us {
  display: grid;
  padding: 28px;
}

.score-cn span,
.score-us span {
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
}

.score-cn strong,
.score-us strong {
  font-size: 80px;
  line-height: 1.05;
  font-variant-numeric: tabular-nums;
}

.score-cn strong {
  color: var(--red);
}

.score-us strong {
  color: var(--teal-dark);
}

.score-cn small,
.score-us small {
  color: var(--muted);
  font-size: 11px;
}

.score-divider {
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-rows: auto 1fr;
  align-items: center;
  gap: 10px;
  padding: 28px;
  border-right: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.score-divider span {
  grid-column: 1 / -1;
  color: var(--muted);
  font-size: 10px;
  text-align: center;
}

.score-divider b {
  font-size: 11px;
}

.score-divider i {
  position: relative;
  height: 2px;
  background: var(--line);
}

.score-divider i::before,
.score-divider i::after {
  position: absolute;
  top: -4px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  content: "";
}

.score-divider i::before {
  left: 0;
  background: var(--red);
}

.score-divider i::after {
  right: 0;
  background: var(--teal);
}

.score-note {
  margin: 9px 0 56px;
  color: var(--muted);
  font-size: 10px;
  text-align: right;
}

.rocket-compare {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  background: var(--ink);
}

.compare-vehicle {
  display: grid;
  grid-template-columns: minmax(180px, 0.8fr) 1fr;
  min-height: 280px;
  background: var(--paper);
}

.vehicle-photo-wrap {
  position: relative;
  overflow: hidden;
}

.vehicle-photo-wrap img {
  width: 100%;
  height: 100%;
  min-height: 280px;
  object-fit: cover;
}

.spacex-vehicle .vehicle-photo-wrap img {
  image-rendering: auto;
}

.vehicle-photo-wrap span {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 7px;
  color: var(--white);
  background: rgba(17, 20, 19, 0.8);
  font-size: 9px;
  font-weight: 800;
}

.vehicle-heading {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 28px;
}

.vehicle-heading p,
.vehicle-heading small {
  margin: 0;
  color: var(--muted);
  font-size: 10px;
}

.vehicle-heading h3 {
  margin: 6px 0;
  font-size: 28px;
  line-height: 1.25;
}

.comparison-table {
  margin-top: 2px;
  overflow-x: auto;
  border: 1px solid var(--ink);
}

.comparison-row {
  display: grid;
  grid-template-columns: 0.62fr 1fr 1fr 1.35fr;
  min-width: 900px;
  border-top: 1px solid var(--line);
}

.comparison-row:first-child {
  border-top: 0;
}

.comparison-row > div {
  padding: 15px 17px;
  border-right: 1px solid var(--line);
  font-size: 12px;
}

.comparison-row > div:last-child {
  color: var(--muted);
  border-right: 0;
}

.header-row {
  color: var(--white);
  background: var(--ink);
}

.header-row > div {
  color: inherit !important;
  border-color: var(--line-dark);
  font-size: 10px;
  font-weight: 850;
}

.comparison-row > div:first-child {
  font-weight: 850;
}

.recovery-route-compare {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 48px;
  margin-top: 76px;
}

.recovery-route-compare article {
  display: grid;
  grid-template-columns: 210px 1fr;
  grid-template-rows: auto auto 1fr;
  column-gap: 30px;
  align-items: start;
}

.route-visual {
  position: relative;
  grid-row: 1 / 4;
  width: 210px;
  height: 220px;
  overflow: hidden;
  background: #e4efed;
  border: 1px solid var(--line);
}

.route-visual .mini-stage {
  position: absolute;
  top: 20px;
  left: calc(50% - 10px);
  width: 20px;
  height: 112px;
  background: #f8faf8;
  border: 2px solid var(--ink);
  border-radius: 10px 10px 2px 2px;
}

.mini-net {
  position: absolute;
  right: 34px;
  bottom: 20px;
  left: 34px;
  height: 70px;
  border: 6px solid var(--ink);
  background: repeating-linear-gradient(45deg, transparent 0 10px, rgba(17, 20, 19, 0.22) 10px 11px);
}

.mini-stage.legged::before,
.mini-stage.legged::after {
  position: absolute;
  bottom: -20px;
  width: 28px;
  height: 2px;
  background: var(--ink);
  content: "";
}

.mini-stage.legged::before {
  right: 8px;
  transform: rotate(-58deg);
}

.mini-stage.legged::after {
  left: 8px;
  transform: rotate(58deg);
}

.mini-deck {
  position: absolute;
  right: 24px;
  bottom: 20px;
  left: 24px;
  height: 20px;
  background: var(--ink-soft);
}

.recovery-route-compare .tool-label {
  margin-top: 9px;
}

.recovery-route-compare h3 {
  font-size: 23px;
}

.recovery-route-compare p:last-child {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.timeline-module {
  margin-top: 100px;
  padding-top: 42px;
  border-top: 3px solid var(--ink);
}

.timeline-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
}

.timeline-filter {
  color: var(--ink);
  background: var(--paper);
  border-color: var(--line);
}

.timeline-filter button {
  color: var(--muted);
}

.timeline-filter button:hover {
  color: var(--ink);
}

.timeline-filter button.active {
  color: var(--white);
  background: var(--ink);
}

.timeline {
  position: relative;
  display: grid;
  gap: 0;
  margin-top: 38px;
}

.timeline::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 88px;
  width: 1px;
  background: var(--line);
  content: "";
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 72px 18px 110px minmax(0, 1fr) 120px;
  gap: 16px;
  align-items: start;
  min-height: 98px;
  padding: 14px 0;
  border-bottom: 1px solid var(--mist);
}

.timeline-year {
  color: var(--muted);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.timeline-dot {
  position: relative;
  z-index: 1;
  width: 12px;
  height: 12px;
  margin-top: 5px;
  border: 3px solid var(--white);
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 0 1px var(--red);
}

.timeline-item.spacex .timeline-dot {
  background: var(--teal-dark);
  box-shadow: 0 0 0 1px var(--teal-dark);
}

.timeline-side {
  color: var(--red-deep);
  font-size: 10px;
  font-weight: 850;
}

.timeline-item.spacex .timeline-side {
  color: var(--teal-dark);
}

.timeline-copy strong {
  display: block;
  font-size: 14px;
}

.timeline-copy p {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 11px;
}

.timeline-status {
  justify-self: end;
  padding: 4px 7px;
  border: 1px solid var(--line);
  border-radius: 2px;
  color: var(--muted);
  font-size: 9px;
  font-weight: 750;
}

.economics-section {
  background: #141918;
}

.economics-lab {
  display: grid;
  grid-template-columns: minmax(480px, 1.2fr) minmax(360px, 0.8fr);
  min-height: 520px;
  border: 1px solid var(--line-dark);
}

.economics-controls {
  display: grid;
  align-content: center;
  gap: 6px;
  padding: 42px 56px;
  border-right: 1px solid var(--line-dark);
}

.economics-controls .range-field {
  margin-top: 14px;
}

.economics-output {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 42px 48px;
  background: #1d2421;
}

.economics-output > p:first-child {
  margin: 0;
  color: var(--muted-dark);
  font-size: 11px;
  font-weight: 750;
}

.economics-output > strong {
  color: var(--yellow);
  font-size: 104px;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.cost-bar {
  position: relative;
  height: 16px;
  margin-top: 22px;
  overflow: visible;
  background: #37413d;
}

.cost-bar i {
  display: block;
  width: 56%;
  height: 100%;
  background: var(--teal);
  transition: width 180ms ease, background 180ms ease;
}

.cost-bar span {
  position: absolute;
  top: 22px;
  right: 0;
  color: #7f8d86;
  font-size: 9px;
}

.economics-output > p:not(:first-child) {
  margin: 38px 0 16px;
  color: #d4dcd7;
  font-size: 13px;
}

.break-even {
  display: flex;
  flex-direction: column;
  padding-top: 16px;
  border-top: 1px solid var(--line-dark);
}

.break-even span {
  color: var(--muted-dark);
  font-size: 9px;
}

.break-even b {
  margin-top: 3px;
  font-size: 13px;
}

.economics-rules {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 30px;
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.economics-rules p {
  margin: 0;
  padding: 22px;
  color: var(--muted-dark);
  border-right: 1px solid var(--line-dark);
  font-size: 11px;
}

.economics-rules p:last-child {
  border-right: 0;
}

.economics-rules strong {
  display: block;
  color: var(--white);
}

.screening-principles {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 46px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.screening-principles article {
  min-height: 180px;
  padding: 24px;
  border-right: 1px solid var(--line);
}

.screening-principles article:last-child {
  border-right: 0;
}

.screening-principles span {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  color: var(--white);
  background: var(--ink);
  border-radius: 50%;
  font-size: 10px;
  font-weight: 850;
}

.screening-principles h3 {
  margin: 24px 0 4px;
  font-size: 17px;
}

.screening-principles p {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
}

.company-tool {
  border: 1px solid var(--ink);
  background: var(--white);
}

.company-toolbar {
  display: grid;
  grid-template-columns: minmax(380px, 1fr) minmax(220px, 0.55fr) 190px;
  gap: 20px;
  align-items: end;
  padding: 18px;
  color: var(--white);
  background: var(--ink);
}

.company-filter {
  background: #202623;
}

.company-search-wrap,
.select-wrap {
  display: flex;
  flex-direction: column;
  gap: 5px;
  color: var(--muted-dark);
  font-size: 9px;
  font-weight: 750;
}

.company-search-wrap input,
.select-wrap select {
  width: 100%;
  height: 40px;
  padding: 8px 10px;
  color: var(--white);
  background: #202623;
  border: 1px solid var(--line-dark);
  border-radius: 3px;
  font-size: 12px;
}

.company-search-wrap input::placeholder {
  color: #7f8b85;
}

.company-table-header,
.company-row {
  display: grid;
  grid-template-columns: 1.25fr 1.45fr 0.7fr 1.2fr 88px;
  gap: 0;
}

.company-table-header {
  color: var(--muted);
  background: #eef1ee;
  border-bottom: 1px solid var(--line);
}

.company-table-header span {
  padding: 9px 14px;
  font-size: 9px;
  font-weight: 850;
}

.company-row {
  min-height: 142px;
  border-bottom: 1px solid var(--line);
  transition: background 140ms ease;
}

.company-row:last-child {
  border-bottom: 0;
}

.company-row:hover {
  background: #f8faf8;
}

.company-cell {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  padding: 18px 14px;
  border-right: 1px solid var(--mist);
}

.company-cell:last-child {
  border-right: 0;
}

.company-cell small,
.company-cell p {
  margin: 0;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.55;
}

.company-name {
  display: flex;
  align-items: center;
  gap: 8px;
}

.company-name strong {
  min-width: 0;
  font-size: 15px;
}

.company-name em {
  padding: 2px 5px;
  color: var(--teal-dark);
  background: #e0f5f1;
  border-radius: 2px;
  font-size: 8px;
  font-style: normal;
  font-weight: 850;
}

.company-vehicle {
  margin-top: 5px !important;
  color: var(--ink) !important;
  font-weight: 750;
}

.evidence-line {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.evidence-grade {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 25px;
  height: 25px;
  color: var(--white);
  background: var(--teal-dark);
  border-radius: 50%;
  font-size: 10px;
  font-weight: 900;
}

.grade-b {
  color: var(--ink);
  background: var(--yellow);
}

.grade-c {
  background: #7c8892;
}

.access-badge,
.view-badge {
  width: max-content;
  max-width: 100%;
  padding: 4px 6px;
  border: 1px solid var(--line);
  border-radius: 2px;
  font-size: 9px;
  font-weight: 850;
}

.access-public {
  color: var(--teal-dark);
  border-color: #78c3b9;
  background: #e5f5f2;
}

.access-ipo {
  color: #6d5200;
  border-color: #d7b857;
  background: #fff5cc;
}

.view-core {
  color: #126f45;
  border-color: #7dc3a0;
  background: #e3f4ea;
}

.view-watch {
  color: #725200;
  border-color: #d4b256;
  background: #fff2c2;
}

.view-caution {
  color: #983a31;
  border-color: #e2a39c;
  background: #fae7e4;
}

.view-avoid {
  color: #5c6260;
  border-color: #aeb5b1;
  background: #ecefed;
}

.company-action {
  align-items: center;
  text-align: center;
}

.watch-button {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  padding: 0;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 4px;
  cursor: pointer;
  font-size: 20px;
  line-height: 1;
}

.watch-button:hover,
.watch-button.added {
  color: var(--white);
  background: var(--red);
  border-color: var(--red);
}

.watch-button + small {
  margin-top: 4px;
  font-size: 8px;
}

.empty-state {
  padding: 56px 20px;
  color: var(--muted);
  text-align: center;
}

.watchlist-panel {
  display: grid;
  grid-template-columns: 1fr 1.3fr 1.2fr;
  gap: 30px;
  align-items: center;
  margin-top: 28px;
  padding: 26px 30px;
  color: var(--white);
  background: var(--ink-soft);
}

.watchlist-panel h3 {
  font-size: 20px;
}

.watchlist-panel > p {
  margin: 0;
  color: var(--muted-dark);
  font-size: 11px;
}

.watchlist-items {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  justify-content: flex-end;
}

.watchlist-item {
  padding: 5px 7px;
  color: var(--ink);
  background: var(--white);
  border-radius: 2px;
  font-size: 9px;
  font-weight: 800;
}

.investment-conclusion {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 68px;
  border-top: 3px solid var(--ink);
  border-bottom: 1px solid var(--line);
}

.investment-conclusion > div {
  min-height: 210px;
  padding: 30px;
  border-right: 1px solid var(--line);
}

.investment-conclusion > div:last-child {
  border-right: 0;
}

.investment-conclusion span {
  color: var(--red);
  font-size: 10px;
  font-weight: 850;
}

.investment-conclusion strong {
  display: block;
  margin-top: 32px;
  font-size: 21px;
}

.investment-conclusion p {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 11px;
}

.quiz-section {
  padding-top: 94px;
  padding-bottom: 94px;
}

.quiz-layout {
  display: grid;
  grid-template-columns: minmax(300px, 0.7fr) minmax(520px, 1.3fr);
  gap: 72px;
  align-items: stretch;
}

.quiz-intro {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.quiz-intro p:not(.section-index, #quizStep) {
  color: var(--muted);
}

.quiz-progress {
  height: 5px;
  margin-top: 32px;
  background: var(--mist);
}

.quiz-progress i {
  display: block;
  width: 20%;
  height: 100%;
  background: var(--red);
  transition: width 180ms ease;
}

#quizStep {
  margin-top: 7px;
  font-size: 10px;
  font-weight: 800;
}

.quiz-card {
  display: flex;
  flex-direction: column;
  min-height: 520px;
  padding: 44px;
  color: var(--white);
  background: var(--ink);
}

.quiz-type {
  margin: 0 0 8px;
  color: var(--teal);
  font-size: 10px;
  font-weight: 850;
}

.quiz-options {
  display: grid;
  gap: 9px;
  margin: 28px 0 20px;
}

.quiz-option {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 10px;
  align-items: center;
  width: 100%;
  min-height: 54px;
  padding: 10px 12px;
  color: #d9e0dc;
  background: transparent;
  border: 1px solid var(--line-dark);
  border-radius: 3px;
  cursor: pointer;
  text-align: left;
  font-size: 12px;
}

.quiz-option span {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  color: var(--muted-dark);
  border: 1px solid var(--line-dark);
  border-radius: 50%;
  font-size: 10px;
}

.quiz-option:hover:not(:disabled),
.quiz-option.selected {
  color: var(--white);
  border-color: var(--teal);
  background: rgba(26, 179, 162, 0.1);
}

.quiz-option.correct {
  border-color: #70d2a0;
  background: rgba(58, 154, 102, 0.17);
}

.quiz-option.wrong {
  border-color: #ec7569;
  background: rgba(228, 76, 59, 0.15);
}

.quiz-feedback {
  min-height: 58px;
  margin-bottom: 18px;
  color: var(--muted-dark);
  font-size: 11px;
}

.quiz-feedback strong {
  color: var(--white);
}

.quiz-card .button {
  align-self: flex-start;
  margin-top: auto;
}

.sources-section {
  padding-top: 92px;
}

.evidence-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-bottom: 26px;
}

.source-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--ink);
}

.source-list li {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.source-list li > span {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  color: var(--white);
  background: var(--ink);
  border-radius: 50%;
  font-size: 10px;
  font-weight: 900;
}

.source-list strong {
  font-size: 13px;
}

.source-list p {
  margin: 3px 0 7px;
  color: var(--muted);
  font-size: 11px;
}

.source-list a {
  color: var(--teal-dark);
  font-size: 10px;
  font-weight: 800;
  text-underline-offset: 3px;
}

.disclaimer {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 24px;
  margin-top: 48px;
  padding: 28px 0;
  border-top: 3px solid var(--red);
  border-bottom: 1px solid var(--line);
}

.disclaimer p {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
}

footer {
  padding: 48px 0;
  color: var(--white);
  background: var(--ink);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-inner p {
  margin: 3px 0 0;
  color: var(--muted-dark);
  font-size: 11px;
}

.footer-inner a {
  color: var(--teal);
  font-size: 12px;
  font-weight: 800;
  text-decoration: none;
}

@media (max-width: 1080px) {
  .snapshot {
    display: none;
  }

  .topbar {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .nav-scroll {
    justify-content: flex-end;
  }

  .mentor-grid {
    grid-template-columns: 0.8fr repeat(3, 1fr);
    gap: 16px;
  }

  .section-heading,
  .section-heading.compact-heading {
    grid-template-columns: 150px minmax(0, 1fr);
  }

  .section-heading > p:last-child {
    grid-column: 2;
  }

  .learning-layout,
  .orbit-lab,
  .mission-lab,
  .economics-lab {
    grid-template-columns: 1fr 1fr;
  }

  .lesson-console,
  .orbit-copy,
  .mission-console,
  .economics-controls,
  .economics-output {
    padding: 34px;
  }

  .truth-ladder {
    grid-template-columns: repeat(5, 1fr);
  }

  .ladder-intro {
    grid-column: 1 / -1;
    min-height: auto;
    border-bottom: 1px solid var(--line);
  }

  .rocket-compare {
    grid-template-columns: 1fr;
  }

  .recovery-route-compare {
    gap: 28px;
  }

  .recovery-route-compare article {
    grid-template-columns: 150px 1fr;
  }

  .route-visual {
    width: 150px;
  }

  .company-toolbar {
    grid-template-columns: 1fr 1fr;
  }

  .company-filter {
    grid-column: 1 / -1;
  }

  .company-table-header,
  .company-row {
    grid-template-columns: 1.15fr 1.3fr 0.68fr 1fr 70px;
  }

  .watchlist-panel {
    grid-template-columns: 0.8fr 1.2fr;
  }

  .watchlist-items {
    grid-column: 1 / -1;
    justify-content: flex-start;
  }
}

@media (max-width: 800px) {
  .shell {
    width: min(calc(100% - 28px), var(--max));
  }

  .topbar {
    grid-template-columns: auto minmax(0, 1fr);
    min-height: 60px;
    padding: 0 14px;
  }

  .brand {
    min-width: 106px;
  }

  .brand small {
    display: none;
  }

  .brand-mark {
    width: 8px;
    height: 8px;
  }

  .nav-scroll {
    justify-content: flex-start;
  }

  .nav-scroll a {
    padding: 8px 9px;
    font-size: 11px;
  }

  .hero {
    height: min(760px, calc(100svh - 76px));
    min-height: 590px;
  }

  .hero-media {
    object-position: 57% center;
  }

  .hero-content {
    height: calc(100% - 150px);
    justify-content: flex-end;
    padding-bottom: 24px;
  }

  .hero h1 {
    font-size: 56px;
  }

  .hero-lead {
    font-size: 17px;
  }

  .hero-eyebrow {
    margin-top: 16px;
    font-size: 11px;
  }

  .hero-actions {
    margin-top: 18px;
  }

  .hero-facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    min-height: 142px;
  }

  .hero-facts > div {
    padding: 10px 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  }

  .hero-facts strong {
    font-size: 13px;
  }

  .photo-credit {
    display: none;
  }

  .mentor-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .mentor-grid p:not(.mentor-label) {
    padding-top: 8px;
    border-top: 1px solid rgba(255, 255, 255, 0.3);
  }

  .section-light,
  .section-paper,
  .section-dark {
    padding: 76px 0;
  }

  .roadmap {
    padding-top: 62px;
    padding-bottom: 68px;
  }

  .section-heading,
  .section-heading.compact-heading {
    grid-template-columns: 1fr;
    gap: 12px;
    margin-bottom: 38px;
  }

  .section-heading > p:last-child {
    grid-column: 1;
  }

  .section-heading h2,
  .quiz-intro h2 {
    font-size: 34px;
  }

  .roadmap-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .roadmap-list li {
    min-height: 145px;
    padding: 18px;
    border-bottom: 1px solid var(--line);
  }

  .roadmap-list li:nth-child(2) {
    border-right: 0;
  }

  .roadmap-list li:nth-child(3),
  .roadmap-list li:nth-child(4) {
    border-bottom: 0;
  }

  .learning-layout,
  .orbit-lab,
  .mission-lab,
  .recovery-explainer,
  .economics-lab,
  .quiz-layout {
    grid-template-columns: 1fr;
  }

  .rocket-workbench,
  .lesson-console,
  .orbit-copy,
  .mission-visual,
  .economics-controls {
    border-right: 0;
  }

  .rocket-workbench {
    min-height: 540px;
    border-bottom: 1px solid var(--line-dark);
  }

  .lesson-console {
    min-height: 460px;
  }

  .lesson-copy dl {
    grid-template-columns: 1fr;
  }

  .lesson-copy dl div {
    border-right: 0;
    border-bottom: 1px solid var(--line-dark);
  }

  .lesson-copy dl div:last-child {
    border-bottom: 0;
  }

  .orbit-copy {
    border-bottom: 1px solid var(--line-dark);
  }

  .concept-row,
  .economics-rules,
  .screening-principles,
  .investment-conclusion {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .concept-row article:nth-child(2),
  .economics-rules p:nth-child(2),
  .screening-principles article:nth-child(2),
  .investment-conclusion > div:nth-child(2) {
    border-right: 0;
  }

  .concept-row article:nth-child(-n + 2),
  .economics-rules p:nth-child(-n + 2),
  .screening-principles article:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line-dark);
  }

  .screening-principles article:nth-child(-n + 2),
  .investment-conclusion > div:nth-child(-n + 2) {
    border-bottom-color: var(--line);
  }

  .investment-conclusion > div:last-child {
    grid-column: 1 / -1;
    border-top: 1px solid var(--line);
  }

  .mission-visual {
    min-height: 440px;
    border-bottom: 1px solid var(--line);
  }

  .recovery-copy {
    padding: 36px 0 0;
  }

  .recovery-photo img {
    min-height: 360px;
  }

  .truth-ladder {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .ladder-step {
    border-bottom: 1px solid var(--line);
  }

  .ladder-step:nth-child(3),
  .ladder-step:nth-child(5) {
    border-right: 0;
  }

  .ladder-step:last-child {
    grid-column: 1 / -1;
  }

  .maturity-scoreboard {
    grid-template-columns: 1fr 1fr;
  }

  .score-divider {
    grid-column: 1 / -1;
    grid-row: 2;
    border: 0;
    border-top: 1px solid var(--line);
  }

  .score-cn,
  .score-us {
    padding: 20px;
  }

  .score-cn strong,
  .score-us strong {
    font-size: 58px;
  }

  .score-note {
    text-align: left;
  }

  .compare-vehicle {
    grid-template-columns: 1fr 1fr;
  }

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

  .timeline-item {
    grid-template-columns: 60px 16px 70px minmax(0, 1fr);
  }

  .timeline::before {
    left: 74px;
  }

  .timeline-status {
    grid-column: 4;
    justify-self: start;
  }

  .economics-controls {
    border-bottom: 1px solid var(--line-dark);
  }

  .company-toolbar {
    grid-template-columns: 1fr;
  }

  .company-filter,
  .company-search-wrap,
  .select-wrap {
    grid-column: auto;
  }

  .company-table-header {
    display: none;
  }

  .company-row {
    grid-template-columns: 1fr 1fr;
    padding: 12px;
  }

  .company-cell {
    min-height: 90px;
    padding: 14px;
    border-right: 0;
    border-bottom: 1px solid var(--mist);
  }

  .company-cell:nth-child(odd) {
    border-right: 1px solid var(--mist);
  }

  .company-action {
    grid-column: 1 / -1;
    min-height: 68px;
    border: 0 !important;
  }

  .watchlist-panel {
    grid-template-columns: 1fr;
  }

  .watchlist-items {
    grid-column: auto;
  }

  .quiz-layout {
    gap: 34px;
  }

  .quiz-card {
    min-height: 510px;
  }
}

@media (max-width: 520px) {
  .topbar {
    display: block;
    min-height: 92px;
    padding-top: 10px;
  }

  .brand {
    display: flex;
  }

  .nav-scroll {
    margin-top: 4px;
  }

  .hero {
    height: calc(100svh - 102px);
    min-height: 600px;
  }

  .hero h1 {
    font-size: 49px;
  }

  .hero-lead {
    font-size: 15px;
  }

  .hero-actions .button {
    flex: 1 1 160px;
  }

  .section-heading h2,
  .quiz-intro h2 {
    font-size: 30px;
  }

  .roadmap-list,
  .concept-row,
  .economics-rules,
  .screening-principles,
  .investment-conclusion {
    grid-template-columns: 1fr;
  }

  .roadmap-list li,
  .concept-row article,
  .economics-rules p,
  .screening-principles article,
  .investment-conclusion > div {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .concept-row article,
  .economics-rules p {
    border-bottom-color: var(--line-dark);
  }

  .roadmap-list li:last-child,
  .concept-row article:last-child,
  .economics-rules p:last-child,
  .screening-principles article:last-child,
  .investment-conclusion > div:last-child {
    border-bottom: 0;
  }

  .rocket-model {
    transform: translateX(-40px) scale(0.9);
  }

  .lesson-console,
  .orbit-copy,
  .mission-console,
  .economics-controls,
  .economics-output,
  .quiz-card {
    padding: 26px 22px;
  }

  .mission-time strong {
    font-size: 29px;
  }

  .recovery-vessel {
    right: 8px;
    transform: scale(0.78);
    transform-origin: right bottom;
  }

  .truth-ladder {
    grid-template-columns: 1fr;
  }

  .ladder-step,
  .ladder-step:last-child {
    grid-column: auto;
    min-height: 120px;
    border-right: 0;
  }

  .compare-vehicle {
    grid-template-columns: 1fr;
  }

  .vehicle-photo-wrap img {
    min-height: 220px;
    max-height: 260px;
  }

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

  .route-visual {
    grid-row: auto;
    width: 100%;
  }

  .timeline-header {
    align-items: start;
    flex-direction: column;
  }

  .timeline-item {
    grid-template-columns: 46px 14px minmax(0, 1fr);
    gap: 10px;
  }

  .timeline::before {
    left: 56px;
  }

  .timeline-side {
    grid-column: 3;
  }

  .timeline-copy {
    grid-column: 3;
  }

  .timeline-status {
    grid-column: 3;
  }

  .economics-output > strong {
    font-size: 76px;
  }

  .company-row {
    grid-template-columns: 1fr;
  }

  .company-cell,
  .company-cell:nth-child(odd) {
    min-height: auto;
    border-right: 0;
  }

  .investment-conclusion > div:last-child {
    grid-column: auto;
  }

  .quiz-card h3 {
    font-size: 24px;
  }

  .source-list li {
    grid-template-columns: 34px 1fr;
    gap: 12px;
  }

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

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}