:root {
  --about-page: #fafbfc;
  --about-surface: #ffffff;
  --about-ink: #253746;
  --about-body: #515f6b;
  --about-muted: #77838d;
  --about-line: #dfe4e8;
  --about-mist: #f1f2f4;
  --about-blue: #3157d5;
  --about-blue-wash: #e9eeff;
  --about-radius: 16px;
  --about-content: 960px;
}

html {
  scroll-behavior: smooth;
}

body.portfolio-about-page {
  background: var(--about-page);
  color: var(--about-ink);
}

body.portfolio-about-page main {
  width: 100%;
  padding-top: 84px;
}

.about-shell {
  width: min(var(--about-content), calc(100% - 48px));
  margin: 0 auto;
}

.about-section {
  padding: 88px 0;
  border-bottom: 1px solid var(--about-line);
}

.about-section--compact {
  padding: 72px 0;
}

.about-hero {
  min-height: auto;
  display: flex;
  align-items: center;
  padding: 88px 0 0;
}

.about-hero__grid {
  display: block;
}

.about-hero__intro {
  max-width: 920px;
}

.about-hero__label {
  margin: 0 0 28px;
  color: var(--about-blue);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.about-hero h1 {
  max-width: 820px;
  margin: 0;
  color: var(--about-ink);
  font-size: clamp(42px, 3.4vw, 54px);
  font-weight: 500;
  line-height: 1.18;
  letter-spacing: -0.025em;
}

.about-hero__lead {
  max-width: 820px;
  margin: 28px 0 0;
  color: var(--about-body);
  font-size: clamp(16px, 1.2vw, 18px);
  line-height: 1.78;
}

.about-visual {
  padding: 64px 0 88px;
  border-bottom: 1px solid var(--about-line);
}

.about-visual__grid {
  display: flex;
  height: clamp(420px, 38vw, 520px);
  overflow: hidden;
  border-radius: var(--about-radius);
  background: var(--about-mist);
}

.about-visual__item {
  position: relative;
  flex: 1 1 0;
  min-width: 0;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--about-mist);
  clip-path: polygon(8% 0, 100% 0, 92% 100%, 0 100%);
  transition: flex-grow 480ms cubic-bezier(0.16, 1, 0.3, 1);
}

.about-visual__item:first-child {
  clip-path: polygon(0 0, 100% 0, 92% 100%, 0 100%);
}

.about-visual__item:last-child {
  clip-path: polygon(8% 0, 100% 0, 100% 100%, 0 100%);
}

.about-visual__item + .about-visual__item {
  margin-left: -2.5%;
}

.about-visual__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.02);
  transition: transform 480ms cubic-bezier(0.16, 1, 0.3, 1);
}

.about-visual__grid:hover .about-visual__item,
.about-visual__grid:focus-within .about-visual__item {
  flex-grow: 0.72;
}

.about-visual__grid .about-visual__item:hover,
.about-visual__grid .about-visual__item:focus-visible {
  flex-grow: 2.15;
  outline: none;
}

.about-visual__item:hover img,
.about-visual__item:focus-visible img {
  transform: scale(1);
}

.about-visual__item:nth-child(1) img {
  object-position: 54% center;
}

.about-visual__item:nth-child(2) img {
  object-position: 58% center;
}

.about-visual__item:nth-child(3) img {
  object-position: 56% center;
}

.about-visual__item:nth-child(4) img {
  object-position: 54% center;
}

.about-visual__pagination {
  display: none;
}

.about-section__head {
  display: block;
}

.about-section__head h2,
.about-section__title {
  max-width: 720px;
  margin: 0;
  color: var(--about-ink);
  font-size: clamp(32px, 2.8vw, 42px);
  font-weight: 500;
  line-height: 1.24;
  letter-spacing: -0.02em;
}

.about-section__head p {
  max-width: 760px;
  margin: 26px 0 0;
  color: var(--about-body);
  font-size: 17px;
  line-height: 1.8;
}

.about-section__head--wide p {
  max-width: 1040px;
}

.about-principles {
  margin-top: 52px;
  margin-left: 0;
}

.about-principle {
  display: grid;
  grid-template-columns: minmax(260px, 0.7fr) minmax(0, 1.3fr);
  gap: 56px;
  padding: 28px 0 32px;
  border-bottom: 1px solid var(--about-line);
}

.about-principle:last-child {
  border-bottom: 0;
}

.about-principle h3 {
  margin: 0;
  color: var(--about-ink);
  font-size: 20px;
  font-weight: 500;
  line-height: 1.45;
}

.about-principle p {
  max-width: 640px;
  margin: 0;
  color: var(--about-body);
  font-size: 16px;
  line-height: 1.8;
}

.about-experience {
  margin-top: 52px;
}

.about-job {
  display: grid;
  grid-template-columns: 160px minmax(240px, 0.7fr) minmax(0, 1.3fr);
  gap: 32px;
  padding: 28px 0 32px;
  border-bottom: 1px solid var(--about-line);
}

.about-job:last-child {
  border-bottom: 0;
}

.about-job__date {
  color: var(--about-muted);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  line-height: 1.6;
  text-transform: uppercase;
}

.about-job__role h3 {
  margin: 0 0 8px;
  color: var(--about-ink);
  font-size: 19px;
  font-weight: 500;
  line-height: 1.45;
}

.about-job__role p {
  margin: 0;
  color: var(--about-blue);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.55;
}

.about-job__summary {
  margin: 0;
  color: var(--about-body);
  font-size: 16px;
  line-height: 1.8;
}

.about-capabilities {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 48px;
  margin-top: 52px;
}

.about-capability {
  padding: 28px 0 32px;
  border-bottom: 1px solid var(--about-line);
}

.about-capability:nth-last-child(-n + 2) {
  border-bottom: 0;
}

.about-capability h3 {
  margin: 0 0 14px;
  color: var(--about-ink);
  font-size: 20px;
  font-weight: 500;
}

.about-capability p {
  margin: 0;
  color: var(--about-body);
  font-size: 15px;
  line-height: 1.75;
}

.about-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.about-tools span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--about-mist);
  color: var(--about-body);
  font-size: 12px;
  font-weight: 600;
}

.about-explore {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(48px, 7vw, 96px);
  align-items: center;
}

.about-explore__copy h2 {
  margin: 0;
  color: var(--about-ink);
  font-size: clamp(32px, 2.8vw, 42px);
  font-weight: 500;
  line-height: 1.24;
  letter-spacing: -0.02em;
}

.about-explore__copy p {
  max-width: 560px;
  margin: 24px 0 0;
  color: var(--about-body);
  font-size: 16px;
  line-height: 1.8;
}

.about-explore__links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 30px;
}

.about-text-link {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 9px 16px;
  border: 1px solid var(--about-line);
  border-radius: 999px;
  color: var(--about-ink);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: color 180ms ease, border-color 180ms ease, background-color 180ms ease;
}

.about-text-link--static {
  pointer-events: none;
}

.about-text-link:hover,
.about-text-link:focus-visible {
  border-color: var(--about-blue);
  background: var(--about-blue-wash);
  color: var(--about-blue);
  outline: none;
}

.about-explore__visual {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 16px;
}

.about-explore__visual figure {
  min-height: 420px;
  margin: 0;
  overflow: hidden;
  border-radius: var(--about-radius);
  background: var(--about-mist);
}

.about-explore__visual figure:nth-child(2) {
  margin-top: 72px;
}

.about-explore__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-education {
  display: grid;
  grid-template-columns: minmax(220px, 0.65fr) minmax(0, 1.35fr);
  gap: clamp(48px, 8vw, 120px);
  align-items: start;
}

.about-education__row {
  display: grid;
  grid-template-columns: minmax(180px, 0.8fr) minmax(0, 1.2fr);
  gap: 40px;
  padding: 24px 0 28px;
  border-bottom: 1px solid var(--about-line);
}

.about-education__row:last-child {
  border-bottom: 0;
}

.about-education__row strong {
  color: var(--about-ink);
  font-size: 16px;
  font-weight: 500;
}

.about-education__row span {
  color: var(--about-body);
  font-size: 15px;
  line-height: 1.7;
}

.about-contact {
  padding: 88px 0 80px;
}

.about-contact__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(240px, 0.7fr);
  gap: 64px;
  align-items: end;
}

.about-contact h2 {
  max-width: 760px;
  margin: 0;
  color: var(--about-ink);
  font-size: clamp(34px, 3.2vw, 50px);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.about-contact p {
  max-width: 620px;
  margin: 24px 0 0;
  color: var(--about-body);
  font-size: 17px;
  line-height: 1.8;
}

.about-contact__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px;
}

.about-contact__primary,
.about-contact__secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 11px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 160ms ease, color 160ms ease, background-color 160ms ease;
}

.about-contact__primary {
  background: var(--about-blue);
  color: #ffffff;
}

.about-contact__secondary {
  border: 1px solid var(--about-line);
  background: var(--about-surface);
  color: var(--about-ink);
}

button.about-contact__secondary {
  appearance: none;
  cursor: pointer;
  font-family: inherit;
}

.about-contact__primary:hover,
.about-contact__secondary:hover {
  transform: translateY(-1px);
}

.about-footer {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  padding: 28px 0 40px;
  border-top: 1px solid var(--about-line);
}

.about-footer p,
.about-footer a {
  margin: 0;
  color: var(--about-muted);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-decoration: none;
  text-transform: uppercase;
}

.about-footer a:hover,
.about-footer a:focus-visible {
  color: var(--about-blue);
  outline: none;
}

@media (max-width: 1039px) {
  body.portfolio-about-page main {
    padding-top: 84px;
  }

  .about-shell {
    width: min(100% - 80px, var(--about-content));
  }

  .about-hero {
    min-height: auto;
    padding: 72px 0 0;
  }

  .about-section__head,
  .about-explore,
  .about-education,
  .about-contact__grid {
    grid-template-columns: 1fr;
  }

  .about-principles {
    margin-left: 0;
  }

  .about-job {
    grid-template-columns: 150px minmax(200px, 0.7fr) minmax(0, 1.3fr);
    gap: 28px;
  }

  .about-contact__actions {
    justify-content: flex-start;
  }
}

@media (max-width: 720px) {
  body.portfolio-about-page main {
    padding-top: 76px;
  }

  .about-shell {
    width: calc(100% - 48px);
  }

  .about-section,
  .about-contact {
    padding: 72px 0;
  }

  .about-section--compact {
    padding: 64px 0;
  }

  .about-hero {
    padding: 48px 0 0;
  }

  .about-hero__label {
    margin-bottom: 20px;
  }

  .about-hero h1 {
    font-size: 36px;
    line-height: 1.22;
    letter-spacing: -0.02em;
  }

  .about-hero__lead {
    margin-top: 26px;
    font-size: 16px;
    line-height: 1.75;
  }

  .about-visual {
    padding: 48px 0 72px;
  }

  .about-visual__grid {
    height: auto;
    overflow-x: auto;
    overflow-y: hidden;
    border-radius: var(--about-radius);
    scroll-behavior: smooth;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
    overscroll-behavior-inline: contain;
    -webkit-overflow-scrolling: touch;
  }

  .about-visual__grid::-webkit-scrollbar {
    display: none;
  }

  .about-visual__item {
    flex: 0 0 100%;
    width: 100%;
    min-height: 0;
    aspect-ratio: 16 / 10;
    clip-path: none;
    scroll-snap-align: start;
    scroll-snap-stop: always;
    transition: none;
  }

  .about-visual__item + .about-visual__item {
    margin-left: 0;
  }

  .about-visual__grid:hover .about-visual__item,
  .about-visual__grid:focus-within .about-visual__item,
  .about-visual__grid .about-visual__item:hover,
  .about-visual__grid .about-visual__item:focus-visible {
    flex-grow: 0;
  }

  .about-visual__item img,
  .about-visual__item:hover img,
  .about-visual__item:focus-visible img {
    transform: none;
  }

  .about-visual__pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 18px;
  }

  .about-visual__pagination button {
    width: 38px;
    height: 7px;
    padding: 0;
    border: 0;
    border-radius: 999px;
    background: #c9ced3;
    cursor: pointer;
    transition: width 220ms ease, background-color 220ms ease;
  }

  .about-visual__pagination button.is-active {
    width: 72px;
    background: var(--about-ink);
  }

  .about-visual__pagination button:focus-visible {
    outline: 2px solid var(--about-blue);
    outline-offset: 4px;
  }

  .about-principles,
  .about-experience,
  .about-capabilities {
    margin-top: 48px;
  }

  .about-principle,
  .about-job,
  .about-education__row {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .about-job {
    padding: 28px 0 32px;
  }

  .about-capabilities {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .about-capability:nth-last-child(2) {
    border-bottom: 1px solid var(--about-line);
  }

  .about-explore__visual {
    grid-template-columns: 1fr;
  }

  .about-explore__visual figure {
    width: 100%;
    min-height: 0;
    aspect-ratio: 16 / 10;
  }

  .about-explore__visual figure:nth-child(2) {
    margin-top: 0;
  }

  .about-contact__grid {
    gap: 40px;
  }

  .about-footer {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  .about-visual__item img,
  .about-visual__item,
  .about-visual__pagination button,
  .about-text-link,
  .about-contact__primary,
  .about-contact__secondary {
    transition: none;
  }

  .about-visual__item:hover img,
  .about-contact__primary:hover,
  .about-contact__secondary:hover {
    transform: none;
  }
}