.section {
  margin: 36px 0;
  padding: 32px 36px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  scroll-margin-top: var(--sticky-offset, 96px);
}

[data-theme="dark"] .section {
  background: rgba(0, 0, 0, 0.32);
}

html {
  scroll-padding-top: var(--sticky-offset, 96px);
}

.section--map {
  background: linear-gradient(120deg, rgba(0, 133, 191, 0.08), rgba(255, 255, 255, 0));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow);
}

.map-story {
  margin: 14px 0 18px;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
  box-shadow: var(--shadow);
}

[data-theme="dark"] .map-story {
  background: rgba(0, 0, 0, 0.18);
}

.map-story__title {
  font-weight: 800;
  margin-bottom: 10px;
}

.map-story__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.map-story__item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
  box-shadow: var(--shadow);
}

.map-story__k {
  font-weight: 800;
  color: var(--accent-strong);
  margin-bottom: 6px;
}

.map-story__v {
  color: var(--muted);
  line-height: 1.6;
  font-size: 13px;
}

.map-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 18px;
  align-items: stretch;
}

.map-grid {
  display: grid;
  gap: 12px;
  align-self: stretch;
}

.map-header,
.map-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 16px;
  align-items: center;
}

.map-header__ghost {
  display: block;
}

.map-header {
  font-size: 11px;
  letter-spacing: 0.06em;
  font-weight: 600;
  color: var(--muted);
  padding: 4px 8px;
}

.map-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}

.map-card__left {
  display: grid;
  gap: 6px;
  padding-right: 6px;
}

.map-card__right {
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}

.map-left__k {
  font-weight: 800;
  color: var(--accent-strong);
  letter-spacing: 0.01em;
}

.map-left__v {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.map-side {
  position: relative;
  align-self: stretch;
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 12px;
}

.system-path {
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
  height: 100%;
  display: flex;
  flex-direction: column;
}

[data-theme="dark"] .system-path {
  background: rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .path-connector::before {
  border-top-color: rgba(64, 186, 235, 0.78);
  filter: drop-shadow(0 8px 14px rgba(0, 133, 191, 0.28));
}

.system-path__desc {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.system-path__flow {
  display: grid;
  gap: 10px;
  flex: 1;
}

.path-node {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
  background: var(--card);
  box-shadow: var(--shadow);
}

.path-node__title {
  font-weight: 800;
  margin-bottom: 8px;
}

.path-node__items {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.path-node__items span {
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
  background: var(--bg);
  color: var(--muted);
}

.path-connector {
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.path-connector::before {
  content: "";
  width: 0;
  height: 0;
  border-left: 14px solid transparent;
  border-right: 14px solid transparent;
  border-top: 12px solid rgba(0, 133, 191, 0.75);
  filter: drop-shadow(0 8px 14px rgba(0, 133, 191, 0.18));
}

@keyframes pathChevron {
  0% { background-position: 0% 0%; }
  100% { background-position: 200% 0%; }
}

@keyframes pathFlow {
  0% { background-position: 0% 0%; }
  100% { background-position: 0% 200%; }
}

.path-node--context .path-node__title { color: #0b7bb9; }
.path-node--output .path-node__title { color: #0a6a9a; }
.path-node--response .path-node__title { color: #1f2328; }
.path-node--flow .path-node__title { color: #0b7bb9; }

.signal__ladder {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0 16px;
}

.signal__ladder span {
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12px;
  color: var(--muted);
  background: var(--bg);
}

.signal__ladder span:last-child {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.ladder {
  margin-top: 14px;
}

.ladder__lead {
  font-size: 13.5px;
  color: var(--ink);
  font-weight: 700;
  margin-bottom: 10px;
}

.ladder__groups {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 0.42fr);
  gap: 12px;
  align-items: stretch;
}

.ladder__group {
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 8px;
  min-width: 0;
}

.ladder__group-label {
  font-size: 12px;
  font-weight: 800;
  color: var(--muted);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  white-space: nowrap;
}

.ladder__grid {
  display: grid;
  gap: 10px;
  align-items: stretch;
}

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

.ladder__grid--orch {
  grid-template-columns: 1fr;
}

.ladder__step {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 10px 10px 12px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.ladder__step::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, rgba(0, 133, 191, 0.2), rgba(0, 133, 191, 0.08));
}

.ladder__step.is-active::before {
  background: linear-gradient(90deg, rgba(0, 133, 191, 0.95), rgba(0, 133, 191, 0.18));
}

.ladder__step.is-active {
  border-color: rgba(0, 133, 191, 0.45);
  box-shadow: 0 18px 40px rgba(0, 133, 191, 0.12);
}

.ladder__step--result {
  border-color: rgba(0, 133, 191, 0.35);
  background: linear-gradient(120deg, rgba(0, 133, 191, 0.12), rgba(255, 255, 255, 0.4));
}

[data-theme="dark"] .ladder__step--result {
  background: linear-gradient(120deg, rgba(0, 133, 191, 0.18), rgba(0, 0, 0, 0.18));
}

.ladder__name {
  font-weight: 800;
  margin-bottom: 6px;
  font-size: var(--ladder-name-size, 14px);
  white-space: nowrap;
}

.ladder__desc {
  color: var(--muted);
  font-size: var(--ladder-desc-size, 12.5px);
  line-height: 1.5;
  white-space: nowrap;
}

.ladder__note {
  margin-top: 10px;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.6;
}

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

@media (max-width: 680px) {
  .ladder__grid--base {
    grid-template-columns: 1fr;
  }
}

.hero h1.hero-title {
  margin: 8px 0 8px;
  font-size: clamp(30px, 3.8vw, 48px);
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.hero-title__tail {
  display: block;
  margin-top: 6px;
  font-size: 0.72em;
  font-weight: 700;
  color: var(--ink);
  opacity: 0.92;
}

.hero-slogan {
  margin-bottom: 10px;
  font-size: 17px;
  color: var(--muted);
}

.hero__lead {
  margin: 8px 0 0;
  max-width: 560px;
}

.hero__content {
  height: 100%;
  display: flex;
  flex-direction: column;
}

.hero__cta-bar {
  margin-top: auto;
}

.hero__board {
  height: 100%;
  align-content: start;
  grid-auto-rows: auto;
}

.hero__cta-bar {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-start;
}

.cta-bar__item--install {
  width: 100%;
}

.cta-bar__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero__board {
  gap: 12px;
}

.board__card {
  padding: 14px;
}

.board__card--nav {
  text-decoration: none;
  color: inherit;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.board__card--nav:hover {
  transform: translateY(-2px);
}

.board__go {
  margin-top: auto;
  color: var(--accent);
  font-weight: 700;
  font-size: 12.5px;
  opacity: 0.9;
}

.board__title {
  margin-bottom: 6px;
}

.board__card p {
  font-size: 13.5px;
  line-height: 1.55;
}

.board__tags {
  padding-top: 10px;
}

.board__tags span {
  padding: 3px 7px;
  font-size: 11px;
}

.cap-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 14px;
}

.cap-card {
  text-align: left;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.cap-card:hover {
  transform: translateY(-2px);
}

.cap-card.is-active {
  border-color: rgba(0, 133, 191, 0.55);
  box-shadow: 0 18px 40px rgba(0, 133, 191, 0.12);
}

.cap-card__title {
  font-weight: 800;
  margin-bottom: 6px;
}

.cap-card__core {
  color: var(--ink);
  font-size: 13px;
  line-height: 1.5;
  margin-bottom: 6px;
}

.cap-card__value {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.qr-wrap {
  position: relative;
  display: inline-flex;
}

.qr-popover {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 10px);
  transform: translateX(-50%);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s ease;
  z-index: 20;
}

.qr-popover__inner {
  width: 168px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 10px;
  display: grid;
  gap: 8px;
  text-align: center;
}

.qr-popover__inner img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  display: block;
}

.qr-popover__caption {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.3;
}

.qr-wrap:hover .qr-popover,
.qr-wrap:focus-within .qr-popover {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(-4px);
}

@media (hover: none), (pointer: coarse) {
  .qr-popover {
    display: none;
  }
}

.hero-carousel {
  position: relative;
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 0;
  box-shadow: none;
  display: grid;
  place-items: center;
}

[data-theme="dark"] .hero-carousel {
  background: rgba(0, 0, 0, 0.18);
}

.hero-carousel__slides {
  position: relative;
  min-height: 64px;
  width: 100%;
}

.hero-carousel__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.35s ease, transform 0.35s ease;
  pointer-events: none;
  color: var(--muted);
  line-height: 1.6;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 8px;
}

.hero-carousel__slide.is-active {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.flow-diagram {
  display: grid;
  gap: 14px;
}

.flow-panel {
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: var(--shadow);
}

[data-theme="dark"] .flow-panel {
  background: rgba(0, 0, 0, 0.2);
}

.flow-panel__title {
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 4px;
}

.flow-panel__desc {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
  margin-bottom: 10px;
}

.flow-nodes {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.flow-node {
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
  color: var(--muted);
  background: var(--bg);
}

.flow-node--accent {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.flow-node.is-hot {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 133, 191, 0.18);
}

.flow-chip.is-hot {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 133, 191, 0.14);
}

.flow-link {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
  color: var(--muted);
  font-size: 12px;
}

.flow-link__right,
.flow-link__left {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 6px 8px;
  background: rgba(0, 133, 191, 0.06);
}

.flow-link__arrow {
  opacity: 0.6;
}

.flow-bus {
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 12px;
  background: rgba(0, 133, 191, 0.05);
}

.flow-bus__label {
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  color: var(--accent-strong);
  margin-bottom: 8px;
}

.flow-bus__row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.flow-chip {
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
  background: var(--card);
  color: var(--ink);
}

.flow-warn {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.55;
  color: var(--muted);
}

.section--scenarios {
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow);
}

[data-theme="dark"] .section--scenarios {
  background: rgba(0, 0, 0, 0.18);
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.scenario-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.scenario-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, rgba(0, 133, 191, 0.9), rgba(0, 133, 191, 0.15));
}

.scenario-card h3 {
  margin-bottom: 8px;
  font-size: 16px;
}

.scenario-card p {
  color: var(--muted);
  line-height: 1.65;
  font-size: 13.5px;
}

.scenario-card__hook {
  color: var(--ink);
  font-weight: 650;
}

.scenario-card__help {
  margin-top: -2px;
}

.scenario-card__links {
  margin-top: auto;
  padding-top: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
}

.scenario-card__links a {
  font-size: 13px;
  color: var(--accent);
  text-decoration: none;
  font-weight: 650;
  position: relative;
}

.scenario-card__links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -3px;
  height: 1px;
  background: rgba(0, 133, 191, 0.35);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 160ms ease;
}

.scenario-card__links a:hover::after {
  transform: scaleX(1);
}

@media (max-width: 720px) {
  .map-story__grid {
    grid-template-columns: 1fr;
  }

  .map-layout {
    grid-template-columns: 1fr;
  }

  .map-header,
  .map-card {
    grid-template-columns: 1fr;
  }

  .hero-carousel {
    padding-bottom: 34px;
  }

  .hero-carousel__slides {
    min-height: 78px;
  }

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