.pf {
  --pf-bg: #f9faf8;
  --pf-panel: #eff3ef;
  --pf-ink: #1b201e;
  --pf-muted: #4f5b56;
  --pf-line: #d7dfd9;
  --pf-accent: #0c5a50;
  --pf-stage: #e6eee9;
  --pf-radius: 6px;
  /* 重なりは本文、追従ヘッダー、スキップリンクの順。 */
  --pf-header-layer: 10;
  --pf-skip-layer: 20;
  background: var(--pf-bg);
  color: var(--pf-ink);
  font:
    16px/1.8 system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Hiragino Kaku Gothic ProN",
    sans-serif;
  margin: 0;
  overflow-wrap: anywhere;
  color-scheme: light;
}
.pf *,
.pf *::before,
.pf *::after {
  box-sizing: border-box;
}
.pf a {
  color: var(--pf-accent);
  text-underline-offset: 6px;
}
.pf a:hover {
  text-decoration: underline;
}
.pf a:focus-visible,
.pf button:focus-visible {
  outline: 3px solid var(--pf-accent);
  outline-offset: 6px;
}
.pf h1,
.pf h2,
.pf h3 {
  font-family: inherit;
  color: var(--pf-ink);
  margin: 0 0 24px;
  line-height: 1.25;
  font-weight: 600;
  letter-spacing: -0.045em;
  text-wrap: balance;
}
.pf h1 {
  font-size: clamp(2.5rem, 4.5vw, 4.5rem);
  max-width: 15ch;
}
.pf h2 {
  font-size: clamp(2rem, 4vw, 3.75rem);
}
.pf h3 {
  font-size: 1.5rem;
}
.pf p {
  margin: 0 0 24px;
}
.pf-header,
.pf-footer,
.pf-main {
  width: min(100%, 1400px);
  margin-inline: auto;
  padding-inline: clamp(24px, 5vw, 80px);
}
.pf-header {
  position: sticky;
  top: 0;
  z-index: var(--pf-header-layer);
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: var(--pf-bg);
  border-bottom: 1px solid var(--pf-line);
}
.pf-header nav {
  display: flex;
  gap: clamp(16px, 2.5vw, 40px);
  font-size: 0.875rem;
}
.pf-header a {
  text-decoration: none;
}
.pf-header nav a {
  color: var(--pf-ink);
}
.pf-header nav a:hover {
  color: var(--pf-accent);
  text-decoration: underline;
}
.pf .pf-brand {
  color: var(--pf-ink);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: -0.06em;
  white-space: nowrap;
  text-decoration: none;
}
.pf-hero {
  min-height: min(760px, calc(100svh - 76px));
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  align-items: start;
  gap: 48px;
  padding-block: 64px 88px;
}
.pf-hero-copy {
  padding-block: 24px;
}
.pf-hero h1 {
  max-width: none;
}
.pf-hero h1 span {
  display: block;
}
.pf-hero:not(:has(.pf-hero-art)) {
  grid-template-columns: 1fr;
}
.pf-hero:not(:has(.pf-hero-art)) h1 {
  max-width: 24ch;
}
.pf .pf-hero-copy > .pf-meta {
  color: var(--pf-accent);
  margin-bottom: 32px;
}
.pf-lead {
  font-size: 1.05rem;
  max-width: 38em;
  color: var(--pf-muted);
  line-height: 1.9;
}
.pf-meta {
  font-size: 0.8rem;
  color: var(--pf-muted);
  letter-spacing: 0.02em;
}
.pf-hero-art {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: center;
  gap: 12px;
  padding: 40px 0;
  min-width: 0;
}
.pf-hero-art img {
  width: 100%;
  height: auto;
  aspect-ratio: 280 / 606;
  object-fit: contain;
  border-radius: var(--pf-radius);
  box-shadow: 0 24px 36px -20px rgb(15 40 30 / 25%);
}
.pf-hero-art img:nth-child(1) {
  transform: translateY(32px);
}
.pf-hero-art img:nth-child(2) {
  transform: translateY(-32px);
}
.pf-hero-art img:nth-child(3) {
  transform: translateY(8px);
}
.pf-links {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}
.pf .pf-button {
  display: inline-flex;
  align-items: center;
  gap: 32px;
  background: var(--pf-accent);
  color: var(--pf-bg);
  padding: 15px 24px;
  border-radius: var(--pf-radius);
  text-decoration: none;
  white-space: nowrap;
  transition: transform 200ms ease;
}
.pf-button:hover {
  transform: translateY(-3px);
}
.pf-section {
  border-top: 1px solid var(--pf-line);
  padding-block: 100px;
  scroll-margin-top: 100px;
}
.pf-works {
  padding-top: 48px;
}
.pf-works > h2 {
  margin-bottom: 64px;
}
.pf-projects {
  display: grid;
  gap: 96px;
}
.pf-app {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.3fr);
  gap: clamp(32px, 6vw, 96px);
  align-items: start;
  min-height: 650px;
}
.pf-app-copy {
  position: sticky;
  top: 150px;
  padding-block: 64px;
}
.pf-app:not(:has(.pf-app-visual)) {
  min-height: auto;
}
.pf-app-copy h3 {
  font-size: clamp(2rem, 3.2vw, 3.2rem);
}
.pf-app-copy > .pf-icon {
  display: block;
  margin-bottom: 32px;
}
.pf-app-copy .pf-meta {
  margin-bottom: 16px;
}
.pf-app-copy .pf-more {
  display: inline-block;
  margin-top: 12px;
}
.pf-icon {
  width: 56px;
  height: 56px;
  object-fit: cover;
  border-radius: 12px;
  flex-shrink: 0;
}
.pf-app-visual {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
  gap: 24px;
  background: var(--pf-stage);
  border-radius: var(--pf-radius);
  padding: clamp(24px, 3.5vw, 56px);
  min-height: 650px;
}
.pf-app-screen {
  margin: 0;
  min-width: 0;
}
.pf-app-screen:nth-child(2) {
  margin-top: 120px;
}
.pf-app-screen:only-child {
  grid-column: 1 / -1;
  width: 64%;
  justify-self: center;
}
.pf-app-screen img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--pf-radius);
  box-shadow: 0 20px 28px -18px rgb(15 40 30 / 30%);
}
.pf-more {
  color: var(--pf-accent);
  font-size: 0.95rem;
  text-decoration-thickness: 1px;
}
.pf-more span {
  display: inline-block;
  margin-left: 24px;
}
.pf-experience > h2 {
  margin-bottom: 64px;
}
.pf-experience-intro {
  max-width: 840px;
  margin-left: auto;
}
.pf-experience-intro > h3 {
  font-size: clamp(1.8rem, 3.3vw, 3rem);
}
.pf-cases {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 48px;
  margin-top: 64px;
}
.pf-project {
  border-top: 1px solid var(--pf-line);
  padding-top: 32px;
}
.pf-project-link {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  text-decoration: none;
}
.pf-project-link h3 {
  font-size: 1.5rem;
}
.pf-project-link p {
  color: var(--pf-muted);
}
.pf-project-link:hover h3 {
  color: var(--pf-accent);
}
.pf-cover {
  display: block;
  width: 100%;
  height: 300px;
  object-fit: contain;
  margin-top: 24px;
}
.pf-facts {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
  margin: 32px 0;
}
.pf-facts dt {
  font-size: 0.8rem;
  color: var(--pf-muted);
}
.pf-facts dd {
  margin: 6px 0 0;
  font-size: 1.15rem;
}
.pf-prose {
  max-width: 740px;
  color: var(--pf-muted);
}
.pf-prose p {
  white-space: pre-line;
}
.pf-prose ul {
  padding-left: 24px;
}
.pf-profile {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 64px;
}
.pf-profile h3 {
  margin-bottom: 24px;
}
.pf-profile .pf-prose + h3 {
  margin-top: 56px;
}
.pf-contact {
  padding-block: 80px 120px;
}
.pf-contact h2 {
  font-size: 1rem;
  color: var(--pf-muted);
  letter-spacing: 0;
}
.pf-contact .pf-links {
  align-items: baseline;
  justify-content: space-between;
}
.pf-contact .pf-links > a:first-child {
  font-size: clamp(2rem, 6vw, 6rem);
  letter-spacing: -0.06em;
  text-decoration: none;
  line-height: 1.5;
}
.pf-contact .pf-links > a:first-child::after {
  content: "↗";
  display: inline-block;
  margin-left: 0.5em;
  transition: transform 200ms ease;
}
.pf-contact .pf-links > a:first-child:hover::after {
  transform: translate(6px, -6px);
}
.pf-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  padding-block: 40px;
  border-top: 1px solid var(--pf-line);
  color: var(--pf-muted);
  font-size: 0.8rem;
}
.pf-footer > div {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.pf-detail {
  max-width: 1200px;
}
.pf-detail-heading {
  padding-block: 64px;
}
.pf-detail-heading h1 {
  font-size: clamp(2.2rem, 4vw, 4rem);
  max-width: 20ch;
}
.pf-detail .pf-section {
  padding-block: 64px;
}
.pf-main > a:first-child {
  display: inline-block;
  margin-top: 32px;
}
.pf-gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin: 32px 0 48px;
}
.pf-gallery figure {
  margin: 0;
}
.pf-gallery img {
  width: 100%;
  height: auto;
  max-height: 560px;
  object-fit: contain;
  background: var(--pf-panel);
  border: 1px solid var(--pf-line);
  border-radius: var(--pf-radius);
}
.pf-gallery figcaption {
  font-size: 0.85rem;
  color: var(--pf-muted);
  padding-top: 12px;
}
.pf pre {
  overflow: auto;
}
.pf-preview-label {
  padding: 16px;
  background: var(--pf-panel);
  border-bottom: 1px solid var(--pf-line);
}
.pf-skip {
  position: absolute;
  top: -100px;
  left: 16px;
  padding: 12px;
  background: var(--pf-panel);
  z-index: var(--pf-skip-layer);
}
.pf-skip:focus {
  top: 12px;
}

/* 本文は常に表示し、対応ブラウザーだけ画像をスクロールに追従させる。 */
@supports (animation-timeline: view()) {
  @media (min-width: 768px) and (prefers-reduced-motion: no-preference) {
    .pf-app-screen {
      animation: pf-screen-entry linear both;
      animation-timeline: view();
      animation-range: entry 0% entry 100%;
    }
    .pf-app-copy > h3,
    .pf-experience-intro > h3 {
      animation: pf-title-entry linear both;
      animation-timeline: view();
      animation-range: entry 0% entry 100%;
    }
  }
}
@keyframes pf-screen-entry {
  from {
    transform: translateY(56px);
  }
  to {
    transform: translateY(0);
  }
}
@keyframes pf-title-entry {
  from {
    transform: translateY(24px);
  }
  to {
    transform: translateY(0);
  }
}
@media (max-width: 1023px) {
  .pf-hero {
    gap: 24px;
  }
  .pf-hero h1 {
    font-size: clamp(2rem, 4.8vw, 3.2rem);
  }
  .pf-app {
    min-height: 560px;
    gap: 32px;
  }
  .pf-app-visual {
    min-height: 560px;
    padding: 24px;
    gap: 16px;
  }
}
@media (max-width: 767px) {
  .pf-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding-block: 14px;
  }
  .pf-header nav {
    gap: 20px;
    font-size: 0.8rem;
  }
  .pf .pf-brand {
    font-size: 1.3rem;
  }
  .pf-hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-block: 48px 56px;
    gap: 24px;
  }
  .pf-hero h1 {
    font-size: clamp(2.1rem, 7.5vw, 3.5rem);
    max-width: 16ch;
  }
  .pf-hero-copy {
    padding: 0;
  }
  .pf-hero-copy > .pf-meta {
    margin-bottom: 24px;
  }
  .pf-hero-art {
    max-width: 440px;
    width: 100%;
    margin-inline: auto;
    padding: 24px 8px;
    gap: 16px;
  }
  .pf-hero-art img:nth-child(1) {
    transform: translateY(16px);
  }
  .pf-hero-art img:nth-child(2) {
    transform: translateY(-16px);
  }
  .pf-section {
    padding-block: 56px;
    scroll-margin-top: 124px;
  }
  .pf-works > h2,
  .pf-experience > h2 {
    margin-bottom: 40px;
  }
  .pf-projects {
    gap: 64px;
  }
  .pf-app {
    grid-template-columns: 1fr;
    gap: 32px;
    min-height: auto;
  }
  .pf-app-copy {
    position: static;
    padding: 0;
  }
  .pf-app-copy > .pf-icon {
    margin-bottom: 24px;
  }
  .pf-app-copy h3 {
    font-size: 2.15rem;
  }
  .pf-app-visual {
    min-height: 0;
    padding: 28px 24px;
  }
  .pf-app-screen:nth-child(2) {
    margin-top: 64px;
  }
  .pf-app-screen:only-child {
    width: 75%;
    max-width: 280px;
  }
  .pf-cases,
  .pf-profile {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .pf-facts {
    gap: 32px;
  }
  .pf-gallery {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
  .pf-contact .pf-links {
    align-items: flex-start;
    flex-direction: column;
  }
  .pf-footer {
    padding-block: 32px;
  }
}
@media (prefers-color-scheme: dark) {
  .pf:not([data-theme="light"]) {
    --pf-bg: #111514;
    --pf-panel: #171e1a;
    --pf-ink: #edefec;
    --pf-muted: #b3beb8;
    --pf-line: #343e38;
    --pf-accent: #78c9ba;
    --pf-stage: #1e2b24;
    color-scheme: dark;
  }
}
@media (prefers-reduced-motion: reduce) {
  .pf *,
  .pf *::before,
  .pf *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
  .pf-app-copy {
    position: static;
  }
}
@media print {
  .pf-header,
  .pf-app-copy {
    position: static;
  }
  .pf *,
  .pf *::before,
  .pf *::after {
    animation: none !important;
  }
}