.irp-joint-v1 {
  --jt-paper: #f2eee4;
  --jt-light: #fcfaf5;
  --jt-ink: #121413;
  --jt-soft: #59605d;
  --jt-deep: #082a3b;
  --jt-blue: #173f53;
  --jt-mineral: #2b5b6e;
  --jt-pale: #d9e2df;
  --jt-amber: #b97627;
  --jt-line: rgba(18, 20, 19, 0.2);
  --jt-page: max(28px, calc((100vw - 1320px) / 2));
  --jt-section: clamp(96px, 10vw, 164px);
  --jt-serif: "Bodoni Moda", "Bodoni 72", Didot, serif;
  --jt-sans: "Manrope", Arial, sans-serif;
  --jt-ease: cubic-bezier(0.16, 1, 0.3, 1);
  width: 100%;
  min-width: 0;
  margin: 0;
  padding: 0;
  overflow-x: clip;
  color: var(--jt-soft);
  background: var(--jt-paper);
  font: 400 clamp(1rem, 1.08vw, 1.16rem)/1.67 var(--jt-sans);
}

.irp-joint-v1 *,
.irp-joint-v1 *::before,
.irp-joint-v1 *::after { box-sizing: border-box; }
.irp-joint-v1 ::selection { color: var(--jt-light); background: var(--jt-blue); }
.irp-joint-v1 :focus-visible { outline: 3px solid var(--jt-amber); outline-offset: 4px; }
.irp-joint-v1 h1,
.irp-joint-v1 h2,
.irp-joint-v1 h3,
.irp-joint-v1 p { max-width: none; margin-top: 0; }
.irp-joint-v1 h1,
.irp-joint-v1 h2,
.irp-joint-v1 h3 {
  color: var(--jt-ink);
  font-family: var(--jt-serif);
  font-weight: 400;
  letter-spacing: -0.045em;
}
.irp-joint-v1 h2 {
  margin-bottom: 30px;
  font-size: clamp(3.2rem, 6vw, 6rem);
  line-height: 0.95;
  text-wrap: balance;
}
.irp-joint-v1 h3 {
  margin-bottom: 15px;
  font-size: clamp(2rem, 3vw, 3rem);
  line-height: 0.99;
}
.irp-joint-v1 a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.28em;
}
.irp-joint-v1 img { display: block; max-width: 100%; }
.irp-joint-v1 section[id],
.irp-joint-v1 li[id] { scroll-margin-top: 96px; }

.jt-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 58px;
  padding: 0 26px;
  border: 1px solid transparent;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-decoration: none;
  text-transform: uppercase;
  transition: color 180ms ease, background 180ms ease, transform 180ms var(--jt-ease);
}
.jt-action i { position: relative; width: 27px; height: 12px; margin-left: 22px; }
.jt-action i::before,
.jt-action i::after { position: absolute; right: 0; content: ""; }
.jt-action i::before { top: 5px; width: 27px; border-top: 1px solid currentColor; }
.jt-action i::after { top: 2px; width: 7px; height: 7px; border-top: 1px solid currentColor; border-right: 1px solid currentColor; transform: rotate(45deg); }
.jt-action:hover { transform: translateY(-2px); }
.irp-joint-v1 .jt-action--primary { color: var(--jt-light); background: var(--jt-blue); }
.irp-joint-v1 .jt-action--primary:hover { background: var(--jt-amber); }
.irp-joint-v1 .jt-action--dark { color: var(--jt-light); background: var(--jt-ink); }
.irp-joint-v1 .jt-action--dark:hover { background: var(--jt-blue); }

.jt-hero {
  display: grid;
  grid-template-columns: minmax(460px, 0.84fr) minmax(610px, 1.16fr);
  min-height: max(790px, calc(100svh - 65px));
  background: var(--jt-light);
}
.jt-hero__copy {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 88px clamp(48px, 5vw, 84px) 72px var(--jt-page);
}
.jt-hero h1 {
  max-width: 7.2ch;
  margin: 0;
  font-size: clamp(4.8rem, 6.1vw, 6.9rem);
  line-height: 0.9;
  text-wrap: balance;
}
.jt-hero__lead {
  max-width: 520px;
  margin: 32px 0 0;
  font-size: clamp(1.05rem, 1.23vw, 1.28rem);
  line-height: 1.6;
}
.jt-hero .jt-action { align-self: flex-start; margin-top: 34px; }
.jt-hero__note {
  display: flex;
  gap: 12px;
  align-items: baseline;
  max-width: 480px;
  margin: 31px 0 0;
  color: rgba(18, 20, 19, 0.65);
  font-size: 0.78rem;
  line-height: 1.55;
}
.jt-hero__note > span { flex: 0 0 auto; width: 7px; height: 7px; border-radius: 50%; background: var(--jt-amber); }
.jt-hero__figure {
  position: relative;
  display: grid;
  min-width: 0;
  margin: 0;
  overflow: hidden;
  background: var(--jt-light);
}
.jt-hero__figure picture,
.jt-hero__figure img { width: 100%; height: 100%; }
.jt-hero__figure picture { display: block; }
.jt-hero__figure img { object-fit: contain; object-position: center; }
.jt-hero__figure figcaption {
  position: absolute;
  right: 22px;
  bottom: 17px;
  left: 22px;
  margin: 0;
  color: rgba(18, 20, 19, 0.62);
  font-size: 0.65rem;
  line-height: 1.45;
  text-align: right;
  text-shadow: 0 1px 10px rgba(252, 250, 245, 0.95);
}

.jt-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 28px var(--jt-page) 0;
  color: rgba(18, 20, 19, 0.56);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.jt-breadcrumb a { text-decoration: none; }
.jt-breadcrumb a:hover { color: var(--jt-blue); }

.jt-section-heading { display: grid; grid-template-columns: minmax(0, 1.03fr) minmax(340px, 0.68fr); gap: clamp(56px, 9vw, 145px); align-items: end; }
.jt-section-heading h2 { max-width: 9.6ch; margin-bottom: 0; }
.jt-section-heading > p:last-child { max-width: 58ch; margin-bottom: 6px; }

.jt-corridor { padding: var(--jt-section) var(--jt-page); color: rgba(252, 250, 245, 0.75); background: var(--jt-deep); }
.jt-section-heading--light h2 { color: var(--jt-light); }
.jt-section-heading--light > p:last-child { color: rgba(252, 250, 245, 0.74); }
.jt-corridor__steps {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 94px 0 0;
  padding: 0;
  border-top: 1px solid rgba(252, 250, 245, 0.27);
  list-style: none;
}
.jt-corridor__steps::before { position: absolute; top: -1px; left: 0; width: 25%; border-top: 2px solid var(--jt-amber); content: ""; }
.jt-corridor__steps li { position: relative; min-height: 318px; padding: 35px 28px 38px; border-right: 1px solid rgba(252, 250, 245, 0.22); }
.jt-corridor__steps li:first-child { padding-left: 0; }
.jt-corridor__steps li:last-child { padding-right: 0; border-right: 0; }
.jt-corridor__steps li::before { position: absolute; top: -7px; left: 26px; width: 13px; height: 13px; border: 2px solid #78a0b4; border-radius: 50%; background: var(--jt-deep); content: ""; }
.jt-corridor__steps li:first-child::before { left: 0; border-color: var(--jt-amber); background: var(--jt-amber); }
.jt-corridor__steps span { display: block; margin-bottom: 69px; color: var(--jt-amber); font: 400 1.75rem/1 var(--jt-serif); }
.irp-joint-v1 .jt-corridor__steps h3 { max-width: 8ch; color: var(--jt-light); font-size: clamp(2rem, 2.6vw, 2.65rem); }
.jt-corridor__steps p { margin-bottom: 0; color: rgba(252, 250, 245, 0.72); font-size: 0.91rem; }

.jt-signals { padding: var(--jt-section) var(--jt-page); background: var(--jt-paper); }
.jt-signals__grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 90px; border-top: 1px solid var(--jt-line); border-bottom: 1px solid var(--jt-line); }
.jt-signals__grid article { min-height: 330px; padding: 40px 5vw 44px 0; }
.jt-signals__grid article + article { padding-left: 5vw; border-left: 1px solid var(--jt-line); }
.jt-signals__grid article:last-child { padding-right: 0; }
.jt-signals__grid span { display: block; margin-bottom: 56px; color: var(--jt-amber); font: 400 1.75rem/1 var(--jt-serif); }
.jt-signals__grid h3 { font-size: clamp(2.8rem, 4vw, 4rem); }
.jt-signals__grid p { margin-bottom: 0; }
.jt-context { max-width: 930px; margin: 74px auto 0; padding: 30px 36px; border-top: 1px solid var(--jt-amber); background: var(--jt-light); }
.jt-context p { margin: 0; }
.jt-context strong { color: var(--jt-ink); }

.jt-motion { display: grid; grid-template-columns: minmax(500px, 0.94fr) minmax(480px, 1.06fr); min-height: 940px; color: rgba(252, 250, 245, 0.75); background: var(--jt-blue); }
.jt-motion__figure { position: relative; display: grid; min-width: 0; margin: 0; overflow: hidden; background: var(--jt-deep); }
.jt-motion__figure img { width: 100%; height: 100%; object-fit: contain; object-position: center; }
.jt-motion__figure figcaption { position: absolute; right: 22px; bottom: 17px; left: 22px; color: rgba(252, 250, 245, 0.64); font-size: 0.65rem; line-height: 1.45; }
.jt-motion__copy { align-self: center; padding: 86px var(--jt-page) 86px clamp(60px, 8vw, 120px); }
.irp-joint-v1 .jt-motion__copy h2 { max-width: 9ch; color: var(--jt-light); }
.irp-joint-v1 .jt-motion__copy > p { max-width: 54ch; color: rgba(252, 250, 245, 0.78); }
.jt-motion__copy dl { margin: 48px 0 0; border-top: 1px solid rgba(252, 250, 245, 0.24); }
.jt-motion__copy dl div { display: grid; grid-template-columns: 105px minmax(0, 1fr); gap: 26px; padding: 19px 0; border-bottom: 1px solid rgba(252, 250, 245, 0.24); }
.jt-motion__copy dt { color: var(--jt-light); font-size: 0.69rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; }
.jt-motion__copy dd { margin: 0; color: rgba(252, 250, 245, 0.72); font-size: 0.88rem; line-height: 1.55; }

.jt-first { padding: var(--jt-section) var(--jt-page); background: var(--jt-light); }
.jt-first__intro { display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(340px, 0.66fr); gap: clamp(60px, 10vw, 160px); align-items: end; }
.jt-first__intro h2 { max-width: 9ch; margin-bottom: 0; }
.jt-first__intro > p:last-child { margin-bottom: 7px; }
.jt-first__columns { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 92px; border-top: 1px solid var(--jt-line); border-bottom: 1px solid var(--jt-line); }
.jt-first__columns > div { padding: 42px 7vw 48px 0; }
.jt-first__columns > div + div { padding-right: 0; padding-left: 7vw; border-left: 1px solid var(--jt-line); }
.jt-first__columns h3 { max-width: 11ch; color: var(--jt-blue); }
.jt-first__columns ul { margin: 35px 0 0; padding: 0; list-style: none; }
.jt-first__columns li { position: relative; padding: 15px 0 15px 31px; border-top: 1px solid rgba(18, 20, 19, 0.11); }
.jt-first__columns li::before { position: absolute; top: 26px; left: 2px; width: 8px; height: 8px; border: 1px solid var(--jt-mineral); border-radius: 50%; content: ""; }
.jt-first__columns > div:first-child li:first-child::before { border-color: var(--jt-amber); background: var(--jt-amber); }
.jt-callout { max-width: 940px; margin: 72px auto 0; padding: 28px 34px; border-left: 2px solid var(--jt-amber); background: var(--jt-paper); }
.jt-callout strong { color: var(--jt-ink); }

.jt-boundaries { display: grid; grid-template-columns: minmax(260px, 0.43fr) minmax(0, 1fr); gap: clamp(70px, 12vw, 185px); align-items: center; padding: var(--jt-section) var(--jt-page); background: var(--jt-paper); }
.jt-boundaries__mark { position: relative; width: min(28vw, 355px); aspect-ratio: 1; border: 1px solid rgba(43, 91, 110, 0.42); border-radius: 50%; }
.jt-boundaries__mark::before,
.jt-boundaries__mark::after { position: absolute; border: 1px solid rgba(43, 91, 110, 0.42); border-radius: 50%; content: ""; }
.jt-boundaries__mark::before { inset: 17%; }
.jt-boundaries__mark::after { inset: 34%; }
.jt-boundaries__mark span { position: absolute; inset: 47%; border-radius: 50%; background: var(--jt-amber); }
.jt-boundaries > div:last-child { max-width: 850px; }
.jt-boundaries h2 { max-width: 10.5ch; }
.jt-boundaries p { max-width: 62ch; }
.jt-boundaries p:last-child { margin-top: 24px; color: var(--jt-blue); }

.jt-faq { display: grid; grid-template-columns: minmax(350px, 0.72fr) minmax(500px, 1fr); gap: clamp(65px, 10vw, 160px); padding: var(--jt-section) var(--jt-page); background: var(--jt-light); }
.jt-faq header { position: sticky; top: 100px; align-self: start; }
.jt-faq h2 { max-width: 8ch; }
.jt-faq__items { border-top: 1px solid var(--jt-line); }
.jt-faq details { border-bottom: 1px solid var(--jt-line); }
.jt-faq summary { position: relative; padding: 28px 52px 28px 0; color: var(--jt-ink); font-weight: 600; line-height: 1.4; cursor: pointer; list-style: none; }
.jt-faq summary::-webkit-details-marker { display: none; }
.jt-faq summary::before,
.jt-faq summary::after { position: absolute; top: 39px; right: 2px; width: 18px; border-top: 1px solid var(--jt-blue); content: ""; transition: transform 180ms ease; }
.jt-faq summary::after { transform: rotate(90deg); }
.jt-faq details[open] summary::after { transform: rotate(0); }
.jt-faq details p { max-width: 62ch; margin: 0; padding: 9px 52px 30px 0; font-size: 0.95rem; }

.jt-closing { display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(360px, 0.63fr); gap: clamp(80px, 14vw, 210px); align-items: end; padding: var(--jt-section) var(--jt-page); background: var(--jt-pale); }
.jt-closing h2 { max-width: 9.2ch; margin-bottom: 0; color: var(--jt-blue); }
.jt-closing > div:last-child p { margin-bottom: 34px; }

.jt-references { padding: clamp(80px, 8vw, 125px) var(--jt-page); color: rgba(252, 250, 245, 0.68); background: var(--jt-deep); }
.irp-joint-v1 .jt-references h2 { margin-bottom: 16px; color: var(--jt-light); font-size: clamp(2.6rem, 4vw, 4.3rem); }
.irp-joint-v1 .jt-references > p { color: rgba(252, 250, 245, 0.7); }
.jt-references > p { max-width: 65ch; }
.jt-references ol { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 8vw; margin: 52px 0 0; padding: 0; list-style: none; counter-reset: refs; }
.jt-references li { position: relative; padding: 20px 0 20px 46px; border-top: 1px solid rgba(252, 250, 245, 0.18); font-size: 0.78rem; line-height: 1.65; counter-increment: refs; }
.jt-references li::before { position: absolute; top: 20px; left: 0; color: var(--jt-amber); content: counter(refs, decimal-leading-zero); font-family: var(--jt-serif); font-size: 1.05rem; }
.jt-references a { color: var(--jt-light); }

@media (max-width: 1100px) {
  .jt-hero { grid-template-columns: minmax(400px, 0.9fr) minmax(0, 1.1fr); min-height: 730px; }
  .jt-hero h1 { font-size: clamp(4.1rem, 7vw, 5.6rem); }
  .jt-motion { grid-template-columns: minmax(420px, 0.94fr) minmax(420px, 1.06fr); }
  .jt-corridor__steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .jt-corridor__steps::before { width: 50%; }
  .jt-corridor__steps li:nth-child(2) { border-right: 0; }
  .jt-corridor__steps li:nth-child(n + 3) { border-top: 1px solid rgba(252, 250, 245, 0.22); }
}

@media (max-width: 880px) {
  .irp-joint-v1 { --jt-page: 34px; --jt-section: 106px; }
  .jt-hero { grid-template-columns: 1fr; min-height: 0; }
  .jt-hero__copy { min-height: 650px; padding-top: 90px; padding-bottom: 64px; }
  .jt-hero h1 { max-width: 8ch; font-size: clamp(4.6rem, 11vw, 6rem); }
  .jt-hero__figure { min-height: 620px; }
  .jt-section-heading,
  .jt-first__intro,
  .jt-closing { grid-template-columns: 1fr; gap: 35px; }
  .jt-motion { grid-template-columns: 1fr; min-height: 0; }
  .jt-motion__figure { min-height: 720px; }
  .jt-motion__copy { padding: 90px var(--jt-page); }
  .jt-boundaries { grid-template-columns: 210px minmax(0, 1fr); gap: 55px; }
  .jt-boundaries__mark { width: 210px; }
  .jt-faq { grid-template-columns: 1fr; gap: 60px; }
  .jt-faq header { position: static; }
}

@media (max-width: 640px) {
  .irp-joint-v1 { --jt-page: 22px; --jt-section: 82px; font-size: 1rem; line-height: 1.62; }
  .irp-joint-v1 h2 { font-size: clamp(2.85rem, 14vw, 4rem); line-height: 0.96; }
  .irp-joint-v1 h3 { font-size: clamp(2rem, 10vw, 2.8rem); }
  .jt-action { width: 100%; min-height: 56px; }
  .jt-hero__copy { min-height: 0; padding: 72px var(--jt-page) 48px; }
  .jt-hero h1 { max-width: 8.1ch; font-size: clamp(3.85rem, 18.6vw, 4.7rem); line-height: 0.91; }
  .jt-hero__lead { margin-top: 27px; font-size: 1rem; }
  .jt-hero .jt-action { margin-top: 27px; }
  .jt-hero__note { margin-top: 25px; font-size: 0.72rem; }
  .jt-hero__figure { min-height: 0; aspect-ratio: 3 / 4; }
  .jt-hero__figure img { object-fit: contain; object-position: center; }
  .jt-hero__figure figcaption { right: 15px; bottom: 12px; left: 15px; font-size: 0.59rem; }
  .jt-breadcrumb {
    flex-wrap: nowrap;
    gap: 7px;
    padding: 17px var(--jt-page);
    overflow: hidden;
    white-space: nowrap;
    font-size: 0.61rem;
  }
  .jt-section-heading,
  .jt-first__intro,
  .jt-closing { gap: 27px; }
  .jt-corridor__steps { grid-template-columns: 1fr; margin-top: 58px; }
  .jt-corridor__steps::before { width: 100%; }
  .jt-corridor__steps li,
  .jt-corridor__steps li:first-child,
  .jt-corridor__steps li:last-child { min-height: 0; padding: 32px 0 36px; border-right: 0; border-top: 1px solid rgba(252, 250, 245, 0.22); }
  .jt-corridor__steps li:first-child { border-top: 0; }
  .jt-corridor__steps li::before,
  .jt-corridor__steps li:first-child::before { top: -7px; left: 0; }
  .jt-corridor__steps span { margin-bottom: 32px; }
  .jt-signals__grid { grid-template-columns: 1fr; margin-top: 58px; }
  .jt-signals__grid article,
  .jt-signals__grid article + article,
  .jt-signals__grid article:last-child { min-height: 0; padding: 32px 0 37px; border-left: 0; border-top: 1px solid var(--jt-line); }
  .jt-signals__grid article:first-child { border-top: 0; }
  .jt-signals__grid span { margin-bottom: 32px; }
  .jt-context { margin-top: 48px; padding: 24px 20px; }
  .jt-motion__figure { min-height: 0; aspect-ratio: 863 / 1823; }
  .jt-motion__figure figcaption { right: 15px; bottom: 12px; left: 15px; font-size: 0.59rem; }
  .jt-motion__copy { padding: 75px var(--jt-page); }
  .jt-motion__copy dl { margin-top: 39px; }
  .jt-motion__copy dl div { grid-template-columns: 1fr; gap: 7px; padding: 18px 0; }
  .jt-first__columns { grid-template-columns: 1fr; margin-top: 58px; }
  .jt-first__columns > div,
  .jt-first__columns > div + div { padding: 33px 0 38px; border-left: 0; }
  .jt-first__columns > div + div { border-top: 1px solid var(--jt-line); }
  .jt-callout { margin-top: 48px; padding: 24px 20px; }
  .jt-boundaries { grid-template-columns: 1fr; gap: 47px; }
  .jt-boundaries__mark { width: min(58vw, 220px); }
  .jt-faq { gap: 42px; }
  .jt-faq summary { padding: 24px 46px 24px 0; }
  .jt-faq summary::before,
  .jt-faq summary::after { top: 35px; }
  .jt-faq details p { padding-right: 0; }
  .jt-closing .jt-action { margin-top: 3px; }
  .jt-references ol { grid-template-columns: 1fr; margin-top: 42px; }
}

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