:root {
  --color-orbit-halo: rgba(206, 75, 34, .1);
  --color-orbit-shadow: rgba(27, 27, 27, .07);
  --color-paper-grid: rgba(27, 27, 27, .035);
  --color-flag-light: #FFFFFF;
  --color-flag-dark: #6C6C6C;
  --hero-visual-size: 390px;
  --orbit-duration-outer: 34s;
  --orbit-duration-inner: 26s;
}

.home-hero {
  padding-top: 26px;
  padding-bottom: 46px;
}

.hero-badge {
  margin-inline: auto;
}

.hero-badge .badge-dot {
  flex-shrink: 0;
}

.home-hero .hero-title {
  margin-top: 14px;
  margin-bottom: 0;
}

.home-hero .hero-description {
  margin-top: 18px;
}

.hero-lab {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(350px, .85fr);
  gap: clamp(28px, 5vw, 70px);
  align-items: center;
  width: min(1080px, 100%);
  margin: 24px auto 0;
  padding-top: 22px;
  border-top: 1px solid var(--color-border);
}

.hero-scope {
  display: grid;
  min-width: 0;
  gap: 18px;
}

.scope-row {
  display: flex;
  min-width: 0;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-start;
  gap: 12px 18px;
}

.scope-row .footnote-key {
  width: 100%;
  text-align: left;
}

.platform-mark svg {
  width: 19px;
  height: 19px;
}

.flag-mark svg {
  width: 28px;
  height: 20px;
}

.linux-face,
.linux-belly {
  fill: var(--color-panel);
}

.linux-eye {
  fill: var(--color-text);
}

.linux-beak {
  fill: var(--color-accent);
}

.flag-accent {
  fill: var(--color-accent);
}

.flag-light {
  fill: var(--color-flag-light);
}

.flag-ink {
  fill: var(--color-flag-dark);
}

.flag-line {
  fill: none;
  stroke: var(--color-flag-dark);
  stroke-width: 1;
}

.orbit-visual {
  position: relative;
  display: grid;
  min-width: 0;
  place-items: center;
}

.orbit-paper {
  position: relative;
  width: min(var(--hero-visual-size), 100%);
  aspect-ratio: 1;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
  background-color: var(--color-panel);
  background-image:
    linear-gradient(var(--color-paper-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-paper-grid) 1px, transparent 1px);
  background-size: 24px 24px;
  box-shadow: var(--shadow-card);
}

.orbit-paper::before {
  position: absolute;
  inset: 23%;
  border-radius: var(--radius-pill);
  background: var(--color-orbit-halo);
  box-shadow: 0 0 44px 24px var(--color-orbit-halo);
  content: "";
}

.orbit-index {
  position: absolute;
  top: 15px;
  left: 17px;
  z-index: 4;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
}

.orbit-index b {
  color: var(--color-accent);
}

.orbit-ring {
  position: absolute;
  z-index: 2;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
}

.orbit-ring::before,
.orbit-ring::after {
  position: absolute;
  width: 7px;
  height: 7px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  box-shadow: 0 0 0 5px var(--color-orbit-halo);
  content: "";
}

.orbit-ring::before {
  top: 9%;
  left: 18%;
}

.orbit-ring::after {
  right: 12%;
  bottom: 16%;
}

.orbit-ring-outer {
  inset: 12%;
  animation: orbit-turn var(--orbit-duration-outer) linear infinite;
}

.orbit-ring-inner {
  inset: 26%;
  border-style: dashed;
  animation: orbit-turn-reverse var(--orbit-duration-inner) linear infinite;
}

.orbit-label {
  position: absolute;
  display: inline-flex;
  min-height: 25px;
  align-items: center;
  padding: 3px 9px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  box-shadow: var(--shadow-button);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  white-space: nowrap;
}

.orbit-label-us {
  top: -13px;
  left: 42%;
}

.orbit-label-jp {
  top: 39%;
  right: -20px;
}

.orbit-label-sg {
  bottom: -12px;
  left: 22%;
}

.orbit-label-hk {
  top: 8%;
  right: -17px;
}

.orbit-label-kr {
  bottom: 5%;
  left: -17px;
}

.orbit-core {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 5;
  display: grid;
  width: 112px;
  height: 112px;
  place-items: center;
  padding: 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  box-shadow: 0 8px 28px var(--color-orbit-shadow), 0 0 0 12px var(--color-orbit-halo);
  transform: translate(-50%, -50%);
}

.orbit-core img {
  width: 58px;
  height: 58px;
}

.orbit-core span {
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .08em;
}

.orbit-vector {
  position: absolute;
  inset: 0;
  z-index: 3;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.orbit-vector-line {
  fill: none;
  stroke: var(--color-accent);
  stroke-width: 1.3;
  stroke-dasharray: 5 5;
}

.orbit-vector-short {
  stroke-width: 2.3;
}

.orbit-note {
  display: none;
}

.orbit-note-force {
  bottom: 43px;
  left: 25px;
}

.orbit-note-speed {
  top: 55px;
  right: 20px;
}

.orbit-visual.is-paused .orbit-ring {
  animation-play-state: paused;
}

.section-heading {
  max-width: 820px;
  margin-bottom: 38px;
}

.section-heading > p:last-child {
  margin-bottom: 0;
  color: var(--color-muted);
}

.section-heading-split {
  display: grid;
  max-width: none;
  grid-template-columns: minmax(0, 1fr) minmax(280px, .7fr);
  gap: clamp(28px, 6vw, 84px);
  align-items: end;
}

.section-heading-split h2 {
  margin-bottom: 0;
}

.section-heading-split > p {
  margin-bottom: 4px;
}

.theorem-section {
  border-top: 1px solid var(--color-border);
}

.theorem-row p {
  max-width: 780px;
  font-size: 15px;
  line-height: 1.86;
}

.method-notes {
  display: grid;
  grid-template-columns: minmax(240px, .75fr) minmax(0, 1.45fr);
  gap: clamp(36px, 7vw, 96px);
  margin-top: clamp(64px, 8vw, 96px);
  padding-top: clamp(42px, 6vw, 68px);
  border-top: 1px solid var(--color-border);
}

.method-intro {
  align-self: start;
}

.method-intro p:last-child {
  color: var(--color-muted);
}

.method-grid {
  border-top: 1px solid var(--color-border);
}

.method-grid article {
  position: relative;
  display: grid;
  grid-template-columns: 34px minmax(150px, .45fr) minmax(0, 1fr);
  gap: 16px;
  padding: 25px 4px;
  border-bottom: 1px solid var(--color-border);
}

.method-grid article > span {
  color: var(--color-accent);
  font-size: 12px;
  font-weight: 700;
}

.method-grid h3 {
  margin: 0;
  font-size: 17px;
}

.method-grid p {
  margin: 0;
  color: var(--color-muted);
  font-size: 14px;
}

.nodes-preview,
.pricing-preview,
.blog-preview {
  border-top: 1px solid var(--color-border);
}

.route-guide {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-s);
  background: var(--color-border);
  overflow: hidden;
}

.route-guide article {
  min-width: 0;
  padding: 24px;
  background: var(--color-panel);
}

.route-guide h3 {
  font-size: 17px;
}

.route-guide p {
  margin-bottom: 0;
  color: var(--color-muted);
  font-size: 14px;
}

.text-link {
  display: inline-flex;
  margin-top: 28px;
  color: var(--color-accent-dark);
  font-weight: 700;
}

.text-link:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.client-section {
  background: var(--color-panel-soft);
  border-top: 1px solid var(--color-border);
}

.inline-link {
  color: var(--color-accent-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.platform-card {
  transition: border-color var(--motion-fast), transform var(--motion-fast);
}

.platform-card:hover {
  border-color: var(--color-muted);
  transform: translateY(-2px);
}

.platform-card .btn {
  width: 100%;
}

.plan-context {
  min-height: 116px;
  color: var(--color-muted);
  font-size: 14px;
}

.traffic-note {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  margin-top: 22px;
  padding: 26px 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-s);
  background: var(--color-panel-soft);
}

.traffic-note h3 {
  font-size: 19px;
}

.traffic-note p:last-child {
  max-width: 850px;
  margin-bottom: 0;
  color: var(--color-muted);
}

.traffic-note .chip {
  flex: 0 0 auto;
}

.faq-preview {
  border-top: 1px solid var(--color-border);
}

.article-card h3 a:hover {
  color: var(--color-accent-dark);
}

.final-band {
  border-top: 1px solid var(--color-border);
  background: var(--color-text);
}

.final-band-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 32px;
  align-items: center;
}

.final-band .kicker,
.final-band h2,
.final-band p {
  color: var(--color-panel);
}

.final-band h2 {
  margin-bottom: 10px;
}

.final-band p:last-child {
  margin-bottom: 0;
  opacity: .78;
}

.final-button {
  min-width: 154px;
}

@keyframes orbit-turn {
  from {
    transform: rotate(0);
  }

  to {
    transform: rotate(360deg);
  }
}

@keyframes orbit-turn-reverse {
  from {
    transform: rotate(360deg);
  }

  to {
    transform: rotate(0);
  }
}

@media (max-width: 1060px) {
  .hero-lab {
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 28px;
  }

  .scope-row {
    gap: 11px 14px;
  }

  .platform-mark,
  .flag-mark {
    font-size: 11.5px;
  }

  .platform-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .plan-context {
    min-height: 0;
  }
}

@media (max-width: 820px) {
  .hero-lab {
    grid-template-columns: minmax(0, 1fr);
  }

  .scope-row {
    justify-content: center;
  }

  .scope-row .footnote-key {
    text-align: center;
  }

  .orbit-visual {
    width: min(390px, 100%);
    margin-inline: auto;
  }

  .section-heading-split,
  .method-notes {
    grid-template-columns: minmax(0, 1fr);
  }

  .method-grid article {
    grid-template-columns: 30px minmax(130px, .45fr) minmax(0, 1fr);
  }

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

  .traffic-note {
    align-items: flex-start;
    flex-direction: column;
  }

  .final-band-inner {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 640px) {
  :root {
    --hero-visual-size: 344px;
  }

  .home-hero {
    padding-top: 22px;
  }

  .home-hero .hero-title {
    font-size: clamp(32px, 9vw, 40px);
  }

  .home-hero .hero-title .no-break,
  .home-hero ~ .section h2 .no-break {
    white-space: normal;
  }

  .home-hero .wrap {
    overflow: hidden;
  }

  .hero-lab {
    margin-top: 20px;
    padding-top: 18px;
  }

  .hero-scope {
    gap: 16px;
  }

  .scope-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 16px;
  }

  .scope-row .footnote-key {
    grid-column: 1 / -1;
  }

  .platform-mark,
  .flag-mark {
    width: auto;
    min-width: 0;
    justify-content: center;
  }

  .scope-row > :last-child {
    grid-column: 1 / -1;
    width: calc(50% - 8px);
    justify-self: center;
  }

  .orbit-note {
    display: none;
  }

  .method-grid article {
    grid-template-columns: 28px minmax(0, 1fr);
  }

  .method-grid article p {
    grid-column: 2;
  }

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

  .traffic-note {
    padding: 22px;
  }

  .traffic-note .chip {
    max-width: 100%;
  }

  .final-button {
    width: 100%;
  }
}

@media (max-width: 390px) {
  .orbit-label-jp {
    right: -12px;
  }

  .orbit-label-hk {
    right: -10px;
  }

  .orbit-label-kr {
    left: -10px;
  }

  .orbit-core {
    width: 98px;
    height: 98px;
  }

  .orbit-core img {
    width: 50px;
    height: 50px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .orbit-ring {
    animation: none;
  }
}