:root {
  --mki-blue: #b5d9e8;
  --mki-blue-light: #e8f4f8;
  --mki-blue-mid: #7eb8cf;
  --mki-black: #090909;
  --mki-white: #ffffff;
  --mki-paper: #f7fbfc;
  --mki-grey-dark: #5f5f5f;
  --mki-grey-mid: #969696;
  --mki-grey-light: #d3d3d3;
  --mki-yellow: #f7ed85;
  --mki-green: #cce6cc;
  --mki-pink: #efc9d8;
  --mki-border: clamp(2px, 0.19vw, 4px) solid var(--mki-black);
  --mki-radius: clamp(18px, 2vw, 34px);
  --mki-content-width: min(96rem, calc(100vw - 3rem));
  font-family: Arial, Helvetica, sans-serif;
  color: var(--mki-black);
  background: var(--mki-blue);
}

* { box-sizing: border-box; }

html {
  min-height: 100%;
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background: var(--mki-blue) url("../assets/digitaltag-background-blue.svg") center top / cover fixed no-repeat;
}

button,
a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
button:focus-visible,
a:focus-visible { outline: 5px solid var(--mki-yellow); outline-offset: 4px; }
[hidden] { display: none !important; }

.mki-page {
  width: 100%;
  min-height: 100vh;
  padding: clamp(1rem, 1.7vw, 2rem);
}

.mki-brand {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 1.7vw, 1.8rem);
  width: min(55rem, calc(100vw - 2rem));
  min-height: clamp(5.5rem, 8.5vw, 8rem);
  margin: 0 auto;
  padding: 0.65rem clamp(1rem, 2.4vw, 2.5rem);
  border: var(--mki-border);
  border-radius: var(--mki-radius);
  background: var(--mki-white);
}

.mki-brand__home {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.mki-brand__logo { display: block; width: clamp(6rem, 10vw, 10rem); height: auto; }

.mki-brand__text {
  min-width: 0;
  font-family: "Arial Black", Arial, Helvetica, sans-serif;
  line-height: 1;
}

.mki-brand__name {
  display: block;
  font-size: clamp(1.45rem, 2.7vw, 2.8rem);
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.mki-brand__years {
  display: flex;
  gap: 0.35em;
  margin-top: 0.32em;
  font-size: clamp(0.78rem, 1.35vw, 1.25rem);
}

.mki-brand__years span:nth-child(2) { color: var(--mki-grey-dark); }
.mki-brand__years span:nth-child(3) { color: var(--mki-grey-mid); }
.mki-brand__years span:nth-child(4) { color: var(--mki-grey-light); }

.home-button {
  min-width: 6rem;
  min-height: 3rem;
  margin-left: auto;
  padding: 0.55rem 0.85rem;
  border: 2px solid var(--mki-black);
  border-radius: 999px;
  background: var(--mki-blue-light);
  font-weight: 800;
  cursor: pointer;
}

.exhibit { width: var(--mki-content-width); margin: 0 auto; }

.intro {
  margin: clamp(1.6rem, 3.2vh, 3rem) auto clamp(1.4rem, 2.8vh, 2.5rem);
  text-align: center;
}

.eyebrow {
  margin: 0 0 0.35rem;
  font-size: clamp(0.75rem, 1vw, 0.95rem);
  font-weight: 900;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.intro h1,
.demo-launcher h2,
.dialog-shell h2 {
  margin: 0;
  font-family: "Arial Black", Arial, Helvetica, sans-serif;
  letter-spacing: -0.035em;
}

.intro h1 { font-size: clamp(2.65rem, 5.8vw, 6.1rem); line-height: 0.96; }

.intro__lead {
  max-width: 52rem;
  margin: 0.8rem auto 0;
  font-size: clamp(1rem, 1.35vw, 1.35rem);
  line-height: 1.35;
}

.concept-map { position: relative; }

.model-stage {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: min(31rem, 88vw);
  margin: 0 auto clamp(2rem, 3.5vw, 3.5rem);
}

.model-stage::after {
  position: absolute;
  top: 100%;
  left: 50%;
  width: 3px;
  height: clamp(2rem, 3.5vw, 3.5rem);
  background: var(--mki-black);
  content: "";
}

.model-stage__label {
  position: relative;
  z-index: 1;
  margin-bottom: -0.65rem;
  padding: 0.34rem 0.8rem;
  border: 2px solid var(--mki-black);
  border-radius: 999px;
  background: var(--mki-yellow);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.tracks {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1rem, 1.6vw, 1.65rem);
}

.tracks::before {
  position: absolute;
  right: 16.66%;
  bottom: calc(100% + clamp(1.9rem, 3.3vw, 3.3rem));
  left: 16.66%;
  height: 3px;
  background: var(--mki-black);
  content: "";
}

.track {
  position: relative;
  overflow: hidden;
  border: var(--mki-border);
  border-radius: var(--mki-radius);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.8);
}

.track::before {
  position: absolute;
  bottom: 100%;
  left: 50%;
  width: 3px;
  height: clamp(1.9rem, 3.3vw, 3.3rem);
  background: var(--mki-black);
  content: "";
}

.track__header {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  min-height: 6.4rem;
  padding: clamp(0.85rem, 1.25vw, 1.25rem);
  border-bottom: 3px solid var(--mki-black);
}

.track--talk .track__header { background: var(--mki-yellow); }
.track--knowledge .track__header { background: var(--mki-green); }
.track--action .track__header { background: var(--mki-pink); }

.track__number {
  display: grid;
  flex: 0 0 2.35rem;
  width: 2.35rem;
  height: 2.35rem;
  place-items: center;
  border: 2px solid var(--mki-black);
  border-radius: 50%;
  background: var(--mki-white);
  font-family: "Arial Black", Arial, sans-serif;
  font-size: 0.8rem;
}

.track h2 {
  margin: 0;
  font-family: "Arial Black", Arial, Helvetica, sans-serif;
  font-size: clamp(1.1rem, 1.45vw, 1.55rem);
  line-height: 1.05;
}

.track__header p {
  margin: 0.35rem 0 0;
  font-size: clamp(0.84rem, 1vw, 1rem);
  line-height: 1.25;
}

.track__terms {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: stretch;
  gap: 0.4rem;
  padding: clamp(0.7rem, 1vw, 1rem);
}

.term {
  display: flex;
  min-width: 0;
  min-height: 5.6rem;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 0.55rem;
  border: 2px solid var(--mki-black);
  border-radius: 14px;
  background: var(--mki-paper);
  color: var(--mki-black);
  line-height: 1.1;
  text-align: center;
  cursor: pointer;
  transition: transform 120ms ease, box-shadow 120ms ease, background 120ms ease;
}

.term:hover,
.term:focus-visible {
  transform: translate(-2px, -2px);
  background: var(--mki-white);
  box-shadow: 4px 4px 0 var(--mki-black);
}

.term strong,
.term small { display: block; }

.term strong {
  font-family: "Arial Black", Arial, Helvetica, sans-serif;
  font-size: clamp(0.9rem, 1.06vw, 1.08rem);
  hyphens: auto;
}

.term small {
  margin-top: 0.35rem;
  font-size: clamp(0.68rem, 0.78vw, 0.82rem);
  line-height: 1.2;
}

.term--model {
  width: 100%;
  min-height: 6.5rem;
  gap: 1rem;
  padding: 1rem 1.5rem;
  border: 4px solid var(--mki-black);
  border-radius: 22px;
  background: var(--mki-black);
  color: var(--mki-white);
  box-shadow: 7px 7px 0 var(--mki-white), 10px 10px 0 var(--mki-black);
}

.term--model:hover,
.term--model:focus-visible { background: #252525; }
.term--model strong { font-size: clamp(1.35rem, 2vw, 2rem); }
.term--model small { font-size: clamp(0.78rem, 0.95vw, 1rem); }

.term__icon {
  display: grid;
  flex: 0 0 3.4rem;
  width: 3.4rem;
  height: 3.4rem;
  place-items: center;
  border: 2px solid var(--mki-white);
  border-radius: 50%;
  font-family: Georgia, serif;
  font-size: 1.4rem;
  font-weight: 800;
}

.term--reference { border-style: dashed; }

.track__arrow {
  align-self: center;
  font-size: 1.35rem;
  font-weight: 900;
  transform: rotate(-90deg);
}

.demo-launcher {
  display: grid;
  grid-template-columns: minmax(13rem, 0.65fr) 2fr;
  gap: clamp(1rem, 2vw, 2rem);
  align-items: center;
  margin-top: clamp(2rem, 3.5vw, 3.5rem);
  padding: clamp(1.1rem, 2vw, 2rem);
  border: var(--mki-border);
  border-radius: var(--mki-radius);
  background: var(--mki-white);
}

.demo-launcher h2 { font-size: clamp(1.65rem, 2.5vw, 2.8rem); line-height: 1; }

.demo-launcher__buttons {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}

.demo-button {
  display: flex;
  min-height: 4.6rem;
  align-items: center;
  gap: 0.65rem;
  padding: 0.7rem;
  border: 2px solid var(--mki-black);
  border-radius: 14px;
  background: var(--mki-blue-light);
  font-size: clamp(0.82rem, 1vw, 1rem);
  font-weight: 800;
  line-height: 1.15;
  text-align: left;
  cursor: pointer;
}

.demo-button:hover { background: var(--mki-yellow); }

.demo-button span {
  display: grid;
  flex: 0 0 2.2rem;
  width: 2.2rem;
  height: 2.2rem;
  place-items: center;
  border-radius: 50%;
  background: var(--mki-black);
  color: var(--mki-white);
}

.site-footer {
  display: flex;
  width: var(--mki-content-width);
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin: 1rem auto 0;
  padding: 0.4rem 0.1rem;
  font-size: 0.78rem;
  font-weight: 700;
}

.site-footer button {
  border: 0;
  border-bottom: 2px solid var(--mki-black);
  background: transparent;
  font-weight: 800;
  cursor: pointer;
}

dialog {
  width: min(68rem, calc(100vw - 2rem));
  max-width: none;
  max-height: calc(100vh - 2rem);
  padding: 0;
  border: 0;
  overflow: visible;
  background: transparent;
}

dialog::backdrop { background: rgba(0, 0, 0, 0.72); backdrop-filter: blur(5px); }

.dialog-shell {
  position: relative;
  max-height: calc(100vh - 2rem);
  overflow: auto;
  border: 4px solid var(--mki-black);
  border-radius: var(--mki-radius);
  background: var(--mki-white);
  box-shadow: 10px 10px 0 var(--mki-blue-mid);
}

.dialog-close {
  position: sticky;
  z-index: 4;
  top: 0.75rem;
  float: right;
  width: 3.25rem;
  height: 3.25rem;
  margin: 0.75rem 0.75rem -4rem 0;
  border: 3px solid var(--mki-black);
  border-radius: 50%;
  background: var(--mki-white);
  font-family: Arial, sans-serif;
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
  cursor: pointer;
}

.detail-dialog__body {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(14rem, 0.7fr);
  min-height: 34rem;
}

.detail-copy { padding: clamp(1.5rem, 3.3vw, 3.5rem); }

.dialog-shell h2 {
  max-width: 15ch;
  margin-right: 3rem;
  font-size: clamp(2.25rem, 4.5vw, 4.6rem);
  line-height: 0.96;
}

.detail-summary {
  max-width: 44rem;
  margin: 1.1rem 0 1.5rem;
  font-size: clamp(1.1rem, 1.55vw, 1.4rem);
  font-weight: 700;
  line-height: 1.4;
}

.detail-block {
  margin-top: 1rem;
  padding: 1rem 1.1rem;
  border-left: 6px solid var(--mki-black);
  background: var(--mki-blue-light);
}

.detail-block--misunderstanding { background: #f7f2dd; }

.detail-block h3,
.related h3 {
  margin: 0 0 0.35rem;
  font-size: 0.9rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.detail-block p,
.qr-panel p { margin: 0; line-height: 1.45; }

blockquote {
  margin: 1.25rem 0 0;
  padding: 1rem 1.1rem;
  border: 3px solid var(--mki-black);
  border-radius: 14px;
  background: var(--mki-yellow);
  font-family: "Arial Black", Arial, sans-serif;
  line-height: 1.35;
}

.related { margin-top: 1.3rem; }
.related > div { display: flex; flex-wrap: wrap; gap: 0.5rem; }

.related button {
  min-height: 2.65rem;
  padding: 0.45rem 0.75rem;
  border: 2px solid var(--mki-black);
  border-radius: 999px;
  background: var(--mki-white);
  font-weight: 800;
  cursor: pointer;
}

.qr-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 5rem clamp(1rem, 2vw, 2rem) 2rem;
  border-left: 3px solid var(--mki-black);
  background: var(--mki-blue);
  text-align: center;
}

.qr-panel__label { font-family: "Arial Black", Arial, sans-serif; font-size: 1.35rem; }

.qr-panel img {
  width: min(13rem, 70%);
  aspect-ratio: 1;
  margin: 1rem 0;
  border: 10px solid var(--mki-white);
  background: var(--mki-white);
}

.qr-panel p:not(.qr-panel__label) { max-width: 18rem; font-size: 0.92rem; }

.qr-panel a {
  margin-top: 1.2rem;
  padding: 0.7rem 1rem;
  border: 2px solid var(--mki-black);
  border-radius: 999px;
  background: var(--mki-white);
  color: var(--mki-black);
  font-weight: 800;
  text-decoration: none;
}

.dialog-shell--demo { min-height: 36rem; padding: clamp(1.5rem, 3.5vw, 3.5rem); }
.demo-panel > p:not(.eyebrow) { max-width: 46rem; font-size: 1.1rem; line-height: 1.45; }

.choice-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin: 1.5rem 0;
}

.choice-row button,
.primary-action,
.secondary-action {
  min-height: 3rem;
  padding: 0.65rem 1rem;
  border: 3px solid var(--mki-black);
  border-radius: 999px;
  background: var(--mki-white);
  font-weight: 900;
  cursor: pointer;
}

.choice-row button[aria-pressed="true"],
.choice-row button:hover,
.primary-action { background: var(--mki-yellow); }

.token-demo {
  min-height: 14rem;
  padding: clamp(1.2rem, 2.5vw, 2.2rem);
  border: 3px solid var(--mki-black);
  border-radius: 20px;
  background: var(--mki-blue-light);
}

.token-demo__sentence {
  margin: 0 0 1.2rem;
  font-family: Georgia, serif;
  font-size: clamp(1.5rem, 3vw, 2.8rem);
}

.token-demo__result { display: flex; flex-wrap: wrap; gap: 0.45rem; }

.token-chip {
  display: inline-flex;
  min-height: 3.2rem;
  align-items: center;
  padding: 0.5rem 0.8rem;
  border: 2px solid var(--mki-black);
  border-radius: 10px;
  background: var(--mki-white);
  font-family: "Arial Black", Arial, sans-serif;
  font-size: clamp(1rem, 1.6vw, 1.35rem);
}

.token-chip:nth-child(3n + 2) { background: var(--mki-green); }
.token-chip:nth-child(3n + 3) { background: var(--mki-pink); }
.demo-note { margin: 1.2rem 0 0; font-weight: 700; }

.rag-flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.7rem;
  margin: 2rem 0;
  padding: 0;
  list-style: none;
}

.rag-flow li {
  position: relative;
  min-height: 11rem;
  padding: 1rem;
  border: 3px solid var(--mki-black);
  border-radius: 16px;
  background: #eeeeee;
  opacity: 0.42;
  transition: opacity 180ms ease, transform 180ms ease, background 180ms ease;
}

.rag-flow li:not(:last-child)::after {
  position: absolute;
  top: 50%;
  left: calc(100% + 0.15rem);
  z-index: 2;
  content: "→";
  font-size: 1.35rem;
  font-weight: 900;
}

.rag-flow li.is-active {
  z-index: 1;
  background: var(--mki-yellow);
  opacity: 1;
  transform: translateY(-4px);
  box-shadow: 4px 4px 0 var(--mki-black);
}

.rag-flow li.is-done { background: var(--mki-green); opacity: 1; }
.rag-flow span, .rag-flow strong, .rag-flow small { display: block; }
.rag-flow span { font-family: "Arial Black", Arial, sans-serif; font-size: 0.8rem; }
.rag-flow strong { margin: 0.55rem 0; font-family: "Arial Black", Arial, sans-serif; font-size: 1.15rem; }
.rag-flow small { font-size: 0.88rem; line-height: 1.35; }
.demo-controls { display: flex; flex-wrap: wrap; gap: 0.7rem; }
.secondary-action { background: var(--mki-white); }
.rag-status { min-height: 1.5em; font-weight: 800; }

.role-quiz {
  margin-top: 1.5rem;
  padding: clamp(1.2rem, 2.5vw, 2.3rem);
  border: 3px solid var(--mki-black);
  border-radius: 20px;
  background: var(--mki-blue-light);
}

.role-quiz__scenario {
  max-width: 48rem;
  min-height: 3.5em;
  margin: 0;
  font-family: "Arial Black", Arial, sans-serif;
  font-size: clamp(1.25rem, 2.2vw, 2rem);
  line-height: 1.3;
}

.role-feedback {
  min-height: 5.5rem;
  margin: 1rem 0;
  padding: 1rem;
  border-left: 6px solid var(--mki-black);
  background: var(--mki-white);
  font-size: 1rem;
  line-height: 1.4;
}

.role-feedback strong { display: block; margin-bottom: 0.25rem; }

.toast {
  position: fixed;
  z-index: 20;
  right: 1rem;
  bottom: 1rem;
  padding: 0.7rem 1rem;
  border: 2px solid var(--mki-black);
  border-radius: 999px;
  background: var(--mki-white);
  font-weight: 800;
  opacity: 0;
  pointer-events: none;
  transform: translateY(1rem);
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1120px) {
  .tracks { grid-template-columns: 1fr; max-width: 58rem; margin: 0 auto; }
  .tracks::before, .track::before, .model-stage::after { display: none; }
  .track__header { min-height: auto; }
  .track__terms { grid-template-columns: 1fr auto 1fr auto 1fr; }
  .demo-launcher { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  :root { --mki-content-width: calc(100vw - 1.25rem); }
  .mki-page { padding: 0.65rem; }
  .mki-brand { width: 100%; min-height: 5rem; padding: 0.55rem 0.75rem; border-radius: 18px; }
  .mki-brand__logo { width: 5.2rem; }
  .mki-brand__name { font-size: clamp(1rem, 4.8vw, 1.55rem); }
  .mki-brand__years { font-size: clamp(0.55rem, 2.6vw, 0.78rem); }
  .home-button { min-width: auto; padding-inline: 0.7rem; font-size: 0.82rem; }
  .intro { margin-block: 1.5rem; }
  .intro h1 { font-size: clamp(2.6rem, 13vw, 4rem); }
  .model-stage { margin-bottom: 1.6rem; }
  .track__terms { grid-template-columns: 1fr; }
  .track__arrow { transform: none; }
  .term { min-height: 4.5rem; }
  .demo-launcher__buttons { grid-template-columns: 1fr; }
  .site-footer { align-items: flex-start; flex-direction: column; }
  dialog { width: calc(100vw - 0.75rem); max-height: calc(100vh - 0.75rem); }
  .dialog-shell { max-height: calc(100vh - 0.75rem); border-radius: 18px; }
  .detail-dialog__body { grid-template-columns: 1fr; }
  .detail-copy { padding: 1.4rem; }
  .dialog-shell h2 { font-size: clamp(2rem, 11vw, 3.2rem); }
  .qr-panel { padding: 1.5rem; border-top: 3px solid var(--mki-black); border-left: 0; }
  .dialog-shell--demo { padding: 1.4rem; }
  .rag-flow { grid-template-columns: 1fr; }
  .rag-flow li { min-height: auto; }
  .rag-flow li:not(:last-child)::after { top: calc(100% - 0.25rem); left: 50%; transform: rotate(90deg); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}