.papa-page {
  background:
    radial-gradient(circle at 86% 2%, rgba(215, 190, 161, 0.32), transparent 24rem),
    linear-gradient(180deg, #f7efe2, var(--cream) 38%, #f2e8d9);
}

.papa-main,
.papa-footer {
  width: min(100% - 2rem, 1180px);
  margin-inline: auto;
}

.papa-page [lang="ja"] {
  letter-spacing: 0;
}

.papa-site-header {
  min-height: 6rem;
}

.papa-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.55rem clamp(0.8rem, 2vw, 1.5rem);
  font-size: 0.69rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.papa-nav a {
  padding: 0.35rem 0;
  text-decoration: none;
}

.papa-nav a[aria-current="page"] {
  border-bottom: 1px solid currentColor;
}

.papa-kicker,
.card-eyebrow {
  margin: 0 0 0.9rem;
  color: #8f5e54;
  font-size: 0.7rem;
  font-weight: 750;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.papa-kicker [lang="ja"],
.card-eyebrow [lang="ja"] {
  margin-left: 0.65rem;
  color: var(--brown-soft);
  font-weight: 600;
}

.papa-button,
.papa-text-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  font-size: 0.74rem;
  font-weight: 750;
  letter-spacing: 0.07em;
  line-height: 1.35;
  text-decoration: none;
  text-transform: uppercase;
}

.papa-button {
  min-height: 3.5rem;
  padding: 0.8rem 1.35rem;
  border: 1px solid var(--brown);
  border-radius: 999px;
  background: var(--brown);
  box-shadow: 0 12px 28px rgba(77, 56, 47, 0.17);
  color: #fffaf2;
  transition: box-shadow 180ms ease, transform 180ms ease;
}

.papa-button:hover {
  box-shadow: 0 16px 34px rgba(77, 56, 47, 0.23);
  transform: translateY(-2px);
}

.papa-button [lang="ja"],
.papa-text-link [lang="ja"] {
  font-size: 0.7rem;
  font-weight: 600;
}

.papa-text-link {
  justify-content: flex-start;
  padding: 0.5rem 0;
  border-bottom: 1px solid currentColor;
}

.papa-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(19rem, 0.72fr);
  align-items: center;
  min-height: min(720px, calc(100svh - 6rem));
  gap: clamp(2.5rem, 7vw, 7rem);
  padding: clamp(3rem, 7vw, 6.5rem) 0 clamp(5rem, 10vw, 9rem);
}

.papa-hero-copy h1,
.subpage-hero h1,
.detail-hero h1 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.045em;
  line-height: 0.97;
}

.papa-hero-copy h1 {
  max-width: 11ch;
  font-size: clamp(3.8rem, 8vw, 7rem);
}

.papa-hero-copy h1 [lang="ja"],
.subpage-hero h1 [lang="ja"],
.detail-hero h1 [lang="ja"],
.papa-section-heading h2 [lang="ja"],
.section-content h2 [lang="ja"] {
  display: block;
  margin-top: 0.7rem;
  color: var(--brown-soft);
  font-family: var(--sans);
  font-size: 0.28em;
  font-weight: 600;
  letter-spacing: 0.03em;
  line-height: 1.4;
}

.papa-hero-copy > p:not(.papa-kicker) {
  max-width: 42rem;
  margin: 1.7rem 0 0;
  color: var(--brown-soft);
  font-size: clamp(1rem, 1.7vw, 1.13rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.4rem;
  margin-top: 2.1rem;
}

.desk-still-life {
  position: relative;
  width: min(100%, 30rem);
  aspect-ratio: 0.95;
  justify-self: end;
  border: 1px solid rgba(77, 56, 47, 0.17);
  border-radius: 2.8rem;
  background: #cdb28f;
  box-shadow: var(--shadow), inset 0 0 5rem rgba(91, 62, 40, 0.08);
  transform: rotate(1.2deg);
}

.desk-photo,
.desk-notebook,
.desk-note {
  position: absolute;
  display: block;
  box-shadow: 0 12px 24px rgba(77, 56, 47, 0.15);
}

.desk-photo {
  top: 9%;
  left: 10%;
  display: grid;
  width: 42%;
  aspect-ratio: 0.86;
  place-items: center;
  border: 0.75rem solid #fffaf2;
  background: #aeb49a;
  color: rgba(77, 56, 47, 0.75);
  font-family: var(--serif);
  font-size: 1.35rem;
  text-align: center;
  transform: rotate(-7deg);
}

.desk-notebook {
  right: 8%;
  bottom: 10%;
  width: 63%;
  min-height: 57%;
  padding: 3.2rem 1.4rem 1.4rem 2.2rem;
  border-left: 0.6rem solid #977963;
  background: repeating-linear-gradient(#fffaf2 0 1.9rem, rgba(114, 91, 78, 0.16) 1.95rem 2rem);
  color: var(--brown);
  font-family: var(--serif);
  font-size: clamp(1.2rem, 3vw, 2rem);
  letter-spacing: 0.06em;
  transform: rotate(4deg);
}

.desk-notebook i {
  font-weight: 400;
  letter-spacing: 0;
}

.desk-pencil {
  position: absolute;
  top: 15%;
  right: 20%;
  width: 0.65rem;
  height: 43%;
  border-radius: 999px;
  background: #d6a04a;
  box-shadow: 0 6px 12px rgba(77, 56, 47, 0.18);
  transform: rotate(33deg);
}

.desk-note {
  bottom: 10%;
  left: 6%;
  padding: 1rem;
  background: #eee1b8;
  color: var(--brown-soft);
  font-family: var(--serif);
  font-size: 0.9rem;
  transform: rotate(-6deg);
}

.papa-section {
  padding: clamp(5rem, 11vw, 9rem) 0;
  border-top: 1px solid var(--line);
}

.papa-section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(18rem, 0.55fr);
  align-items: end;
  gap: clamp(2rem, 6vw, 5rem);
  margin-bottom: clamp(2.5rem, 6vw, 4.5rem);
}

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

.papa-section-heading h2,
.section-content h2,
.registration-panel h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2.9rem, 6vw, 5.5rem);
  font-weight: 400;
  letter-spacing: -0.045em;
  line-height: 0.98;
}

.papa-section-heading > p {
  margin: 0;
  color: var(--brown-soft);
}

.moment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 19rem), 1fr));
  gap: 1.25rem;
}

.moment-card {
  max-width: 42rem;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 2.2rem;
  background: rgba(255, 250, 242, 0.78);
  box-shadow: 0 16px 42px rgba(89, 63, 49, 0.08);
}

.moment-thumbnail,
.media-placeholder {
  display: grid;
  place-content: center;
  gap: 0.35rem;
  background:
    linear-gradient(135deg, rgba(139, 146, 119, 0.22), rgba(215, 190, 161, 0.35)),
    #e7dccb;
  color: var(--brown-soft);
  font-family: var(--serif);
  text-align: center;
}

.moment-thumbnail {
  min-height: 16rem;
  aspect-ratio: 16 / 10;
  border-bottom: 1px solid var(--line);
}

.moment-thumbnail::before,
.media-placeholder::before {
  content: "□";
  font-size: 2rem;
  opacity: 0.45;
}

.moment-card-copy {
  padding: clamp(1.4rem, 4vw, 2.2rem);
}

.moment-card h3,
.tool-category h2,
.decision-card h3,
.learning-card h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.moment-card h3 [lang="ja"],
.tool-category h2 [lang="ja"] {
  display: block;
  margin-top: 0.45rem;
  font-family: var(--sans);
  font-size: 0.48em;
  font-weight: 600;
}

.moment-card-copy > p:not(.card-eyebrow) {
  color: var(--brown-soft);
}

.section-link-row {
  margin: 1.7rem 0 0;
  text-align: right;
}

.creation-process {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.creation-process li {
  position: relative;
  min-width: 0;
  padding: 1.4rem clamp(0.7rem, 1.5vw, 1.2rem) 1.8rem;
  border-right: 1px solid var(--line);
}

.creation-process li:last-child {
  border-right: 0;
}

.creation-process li > span {
  color: #9a6b5d;
  font-family: var(--serif);
  font-size: 0.78rem;
}

.creation-process strong {
  display: block;
  margin-top: 2.8rem;
  font-family: var(--serif);
  font-size: clamp(1.25rem, 2vw, 1.8rem);
  font-weight: 400;
  text-transform: uppercase;
}

.creation-process small {
  display: block;
  margin-top: 0.35rem;
  color: var(--brown-soft);
  font-family: var(--sans);
  font-size: 0.64rem;
  font-weight: 600;
}

.creation-process p {
  margin: 1rem 0 0;
  color: var(--brown-soft);
  font-size: 0.78rem;
  line-height: 1.7;
}

.story-lab-section {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(22rem, 1.2fr);
  gap: clamp(3rem, 8vw, 8rem);
}

.lab-manifesto {
  align-self: start;
  position: sticky;
  top: 2rem;
}

.lab-manifesto h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2.8rem, 5.2vw, 5rem);
  font-weight: 400;
  letter-spacing: -0.045em;
  line-height: 1.02;
}

.lab-manifesto h2 em {
  color: #8f5e54;
  font-weight: 400;
}

.lab-manifesto > p:last-child {
  color: var(--brown-soft);
}

.lab-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.lab-grid article,
.resource-grid article {
  padding: clamp(1.5rem, 4vw, 2.4rem);
  border: 1px solid var(--line);
  border-radius: 1.7rem;
  background: rgba(255, 250, 242, 0.68);
}

.lab-grid article > span,
.resource-grid article > span {
  color: #9a6b5d;
  font-family: var(--serif);
  font-size: 0.78rem;
}

.lab-grid h3,
.resource-grid h3 {
  margin: 2.6rem 0 0;
  font-family: var(--serif);
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  font-weight: 400;
  line-height: 1.05;
}

.lab-grid h3 small,
.resource-grid h3 small {
  display: block;
  margin-top: 0.45rem;
  color: var(--brown-soft);
  font-family: var(--sans);
  font-size: 0.48em;
  font-weight: 600;
}

.lab-grid p,
.resource-grid p {
  color: var(--brown-soft);
}

.category-strips {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0 0 2rem;
  padding: 0;
  border-block: 1px solid var(--line);
  list-style: none;
}

.category-strips li {
  padding: 1.6rem 1rem;
  border-right: 1px solid var(--line);
  font-family: var(--serif);
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  text-align: center;
}

.category-strips li:last-child {
  border-right: 0;
}

.library-preview {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(20rem, 0.7fr);
  align-items: center;
  gap: clamp(2.5rem, 8vw, 7rem);
  margin-block: clamp(3rem, 7vw, 6rem);
  padding-inline: clamp(1.7rem, 6vw, 5rem);
  border: 0;
  border-radius: clamp(2rem, 5vw, 4rem);
  background: var(--brown);
  color: #fffaf2;
}

.library-preview .papa-kicker {
  color: #e3b9b0;
}

.library-preview h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(3rem, 6vw, 5.6rem);
  font-weight: 400;
  letter-spacing: -0.045em;
  line-height: 0.96;
}

.library-preview h2 [lang="ja"] {
  display: block;
  margin-top: 0.7rem;
  font-family: var(--sans);
  font-size: 0.25em;
  font-weight: 600;
}

.library-copy > p:not(.papa-kicker) {
  color: rgba(255, 250, 242, 0.78);
}

.papa-button.light {
  border-color: #fffaf2;
  background: #fffaf2;
  color: var(--brown);
}

.resource-stack {
  margin: 0;
  padding: 0;
  border-top: 1px solid rgba(255, 250, 242, 0.24);
  list-style: none;
}

.resource-stack li {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  gap: 0.3rem 1rem;
  padding: 1.35rem 0;
  border-bottom: 1px solid rgba(255, 250, 242, 0.24);
}

.resource-stack li > span {
  grid-row: 1 / 3;
  color: #e3b9b0;
  font-family: var(--serif);
  font-size: 0.75rem;
}

.resource-stack strong {
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 400;
}

.resource-stack small {
  color: rgba(255, 250, 242, 0.7);
}

.program-note {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 2rem;
  padding: clamp(3rem, 7vw, 5rem) 0 clamp(6rem, 10vw, 9rem);
}

.program-note h2 {
  max-width: 28ch;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 3.6rem);
  font-weight: 400;
  line-height: 1.05;
}

.program-note p:last-child {
  color: var(--brown-soft);
}

.coming-stamp,
.status-note {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  padding: 0.75rem 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 250, 242, 0.6);
  font-size: 0.69rem;
  font-weight: 750;
  letter-spacing: 0.1em;
  text-align: center;
  text-transform: uppercase;
}

.coming-stamp small {
  font-weight: 600;
}

.subpage-hero,
.detail-hero {
  padding: clamp(5rem, 11vw, 9rem) 0 clamp(4rem, 9vw, 7rem);
  border-bottom: 1px solid var(--line);
}

.subpage-hero h1 {
  max-width: 12ch;
  font-size: clamp(3.7rem, 8vw, 7rem);
}

.subpage-hero > p:not(.papa-kicker) {
  max-width: 48rem;
  margin: 1.6rem 0 0;
  color: var(--brown-soft);
  font-size: clamp(1rem, 1.8vw, 1.2rem);
}

.archive-section {
  border-top: 0;
}

.catalog-note {
  max-width: 47rem;
  margin: 0 0 2rem;
  color: var(--brown-soft);
}

.tool-category-grid,
.resource-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.tool-category {
  padding: clamp(1.6rem, 4vw, 2.7rem);
  border: 1px solid var(--line);
  border-radius: 2rem;
  background: rgba(255, 250, 242, 0.72);
}

.tool-category dl {
  margin: 2rem 0 0;
}

.tool-category dl div {
  display: grid;
  grid-template-columns: 7rem minmax(0, 1fr);
  gap: 1rem;
  padding: 0.9rem 0;
  border-top: 1px solid var(--line);
}

.tool-category dt {
  color: #8f5e54;
  font-size: 0.68rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.tool-category dd {
  margin: 0;
  color: var(--brown-soft);
}

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

.registration-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(20rem, 0.65fr);
  align-items: center;
  gap: clamp(2rem, 7vw, 6rem);
  margin-bottom: clamp(6rem, 10vw, 9rem);
  padding: clamp(2rem, 6vw, 5rem);
  border: 1px solid var(--line);
  border-radius: clamp(2rem, 5vw, 4rem);
  background: #eadcc6;
}

.registration-panel h2 {
  font-size: clamp(2.5rem, 5vw, 4.6rem);
}

.registration-panel h2 [lang="ja"] {
  display: block;
  margin-top: 0.6rem;
  font-family: var(--sans);
  font-size: 0.3em;
  font-weight: 600;
}

.registration-panel p {
  color: var(--brown-soft);
}

.registration-form label {
  display: block;
  margin-bottom: 0.6rem;
  font-size: 0.75rem;
  font-weight: 750;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.registration-form > div {
  display: grid;
  gap: 0.7rem;
}

.registration-form input,
.registration-form button {
  width: 100%;
  min-height: 3.4rem;
  padding: 0.75rem 1rem;
  border: 1px solid rgba(77, 56, 47, 0.35);
  border-radius: 0.8rem;
  font: inherit;
}

.registration-form input {
  background: #fffaf2;
  color: var(--brown);
}

.registration-form button {
  background: rgba(77, 56, 47, 0.66);
  color: #fffaf2;
  cursor: not-allowed;
  font-size: 0.72rem;
  font-weight: 750;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.detail-hero {
  max-width: 58rem;
}

.back-link {
  display: inline-flex;
  gap: 0.5rem;
  margin-bottom: 3rem;
  color: var(--brown-soft);
  font-size: 0.75rem;
  font-weight: 700;
  text-decoration: none;
}

.detail-hero h1 {
  font-size: clamp(3.8rem, 8vw, 7.4rem);
}

.detail-hero > p:not(.papa-kicker) {
  color: var(--brown-soft);
  font-size: 1.1rem;
}

.detail-sections {
  padding-bottom: clamp(6rem, 11vw, 10rem);
}

.numbered-section {
  display: grid;
  grid-template-columns: 4rem minmax(0, 1fr);
  gap: clamp(1rem, 4vw, 3rem);
  padding: clamp(4rem, 9vw, 7rem) 0;
  border-bottom: 1px solid var(--line);
}

.section-number {
  padding-top: 0.3rem;
  color: #9a6b5d;
  font-family: var(--serif);
  font-size: 0.9rem;
  font-style: italic;
}

.section-content {
  min-width: 0;
}

.section-content > p:not(.papa-kicker) {
  max-width: 51rem;
  color: var(--brown-soft);
}

.media-placeholder {
  width: min(100%, 54rem);
  aspect-ratio: 16 / 9;
  margin-top: 2rem;
  border: 1px solid var(--line);
  border-radius: 1.5rem;
}

.story-timeline {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  margin: 2.5rem 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.story-timeline li {
  position: relative;
  min-width: 0;
  padding: 1.2rem 0.55rem;
  border-right: 1px solid var(--line);
}

.story-timeline li:last-child {
  border-right: 0;
}

.story-timeline li > * {
  display: block;
}

.story-timeline strong {
  margin-top: 2.2rem;
  font-family: var(--serif);
  font-size: clamp(0.9rem, 1.6vw, 1.2rem);
  font-weight: 400;
  overflow-wrap: anywhere;
}

.story-timeline li > [lang="ja"] {
  margin-top: 0.3rem;
  color: var(--brown-soft);
  font-size: 0.7rem;
}

.timeline-number {
  color: #9a6b5d;
  font-family: var(--serif);
  font-size: 0.72rem;
}

.storyboard-gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 2.5rem 0 0;
  padding: 0;
  list-style: none;
}

.storyboard-placeholder {
  display: grid;
  min-height: 14rem;
  place-content: center;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 1.2rem;
  background: rgba(255, 250, 242, 0.62);
  color: var(--brown-soft);
  text-align: center;
}

.storyboard-placeholder > span {
  font-family: var(--serif);
  font-style: italic;
}

.prompt-preview {
  max-width: 50rem;
  margin: 2rem 0;
  padding: clamp(1.4rem, 4vw, 2.4rem);
  border: 1px solid var(--line);
  border-left: 0.35rem solid #a9796d;
  border-radius: 0 1.4rem 1.4rem 0;
  background: rgba(255, 250, 242, 0.72);
  color: var(--brown-soft);
  font-family: var(--serif);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
}

.decision-grid,
.learning-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.decision-card,
.learning-card {
  padding: clamp(1.4rem, 4vw, 2.3rem);
  border: 1px solid var(--line);
  border-radius: 1.5rem;
  background: rgba(255, 250, 242, 0.66);
}

.decision-card p,
.learning-card p,
.learning-card li {
  color: var(--brown-soft);
}

.learning-card h3 {
  font-size: clamp(1.35rem, 2.5vw, 1.9rem);
}

.learning-card h3 [lang="ja"] {
  display: block;
  margin-top: 0.35rem;
  font-family: var(--sans);
  font-size: 0.55em;
  font-weight: 600;
}

.learning-card ul {
  padding-left: 1.2rem;
}

@media (max-width: 900px) {
  .papa-hero,
  .papa-section-heading,
  .story-lab-section,
  .library-preview,
  .registration-panel {
    grid-template-columns: 1fr;
  }

  .desk-still-life {
    width: min(86%, 29rem);
    justify-self: center;
  }

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

  .creation-process li:nth-child(3) {
    border-right: 0;
  }

  .creation-process li:nth-child(n + 4) {
    border-top: 1px solid var(--line);
  }

  .lab-manifesto {
    position: static;
  }

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

  .category-strips li:nth-child(2) {
    border-right: 0;
  }

  .category-strips li:nth-child(n + 3) {
    border-top: 1px solid var(--line);
  }

  .story-timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .story-timeline li:nth-child(4) {
    border-right: 0;
  }

  .story-timeline li:nth-child(n + 5) {
    border-top: 1px solid var(--line);
  }

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

@media (max-width: 700px) {
  .papa-site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.6rem;
    padding-block: 1rem;
  }

  .papa-nav {
    width: 100%;
    justify-content: flex-start;
  }

  .papa-hero {
    min-height: auto;
    padding-top: 3rem;
  }

  .papa-hero-copy h1 {
    font-size: clamp(3.5rem, 17vw, 5.5rem);
  }

  .creation-process {
    grid-template-columns: 1fr;
    border-top: 0;
  }

  .creation-process li,
  .creation-process li:nth-child(3) {
    display: grid;
    grid-template-columns: 2rem minmax(0, 1fr);
    gap: 0.3rem 1rem;
    padding: 1.4rem 0;
    border-top: 1px solid var(--line);
    border-right: 0;
  }

  .creation-process strong,
  .creation-process p {
    grid-column: 2;
    margin-top: 0;
  }

  .lab-grid,
  .tool-category-grid,
  .decision-grid,
  .learning-grid {
    grid-template-columns: 1fr;
  }

  .program-note {
    grid-template-columns: 1fr;
  }

  .coming-stamp {
    justify-self: start;
  }

  .numbered-section {
    grid-template-columns: 2rem minmax(0, 1fr);
    gap: 0.8rem;
  }

  .story-timeline {
    grid-template-columns: 1fr;
    border-top: 0;
  }

  .story-timeline li,
  .story-timeline li:nth-child(4) {
    display: grid;
    grid-template-columns: 2rem minmax(0, 1fr);
    gap: 0.25rem 0.8rem;
    padding: 1rem 0;
    border-top: 1px solid var(--line);
    border-right: 0;
  }

  .story-timeline strong,
  .story-timeline li > [lang="ja"] {
    grid-column: 2;
    margin-top: 0;
  }

  .storyboard-gallery {
    grid-template-columns: 1fr;
  }

  .storyboard-placeholder {
    min-height: 10rem;
  }
}

@media (max-width: 440px) {
  .papa-main,
  .papa-footer,
  .papa-site-header {
    width: min(100% - 1.25rem, 1180px);
  }

  .papa-nav {
    gap: 0.25rem 0.75rem;
    font-size: 0.61rem;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .papa-button,
  .papa-text-link {
    width: 100%;
  }

  .desk-still-life {
    width: 100%;
  }

  .desk-note {
    display: none;
  }

  .category-strips {
    grid-template-columns: 1fr;
  }

  .category-strips li,
  .category-strips li:nth-child(2) {
    border-top: 1px solid var(--line);
    border-right: 0;
  }

  .category-strips li:first-child {
    border-top: 0;
  }

  .library-preview {
    padding-inline: 1.3rem;
  }

  .tool-category dl div {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }

  .numbered-section {
    grid-template-columns: 1fr;
  }

  .section-number {
    padding-top: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .papa-button {
    transition: none;
  }
}