/* stem-cell-therapy-knee.html only: the whole page's layout, drawings and
   motion. Loaded after site.css and fit-quiz.css. Nothing here is shared with
   another page, and this page no longer loads celva-home.css: the few rules
   scripts/celva-home.js still needs (the patient tiles and their dialog) are
   carried at the foot of this file.

   The hero is never hidden: it paints finished with no script. Everything
   below it is staged only while <html> carries .lk-js, which a one-line
   snippet in the head adds and drops again after 3s if this page's script
   never boots. */

/* On the root, because scroll-padding is read from it: a jump to a part, and
   a Tab to anything further up the page, both stop below the site header and
   the bar. --ease is read from the root by scripts/celva-home.js for the
   dialog's motion. */
:root {
  --lk-nav: 81px;          /* the sticky site header; the page script keeps it measured */
  --lk-bar: 54px;          /* the bar under it */
  --ease: cubic-bezier(.16, 1, .3, 1);
  scroll-padding-top: calc(var(--lk-nav) + var(--lk-bar) + 14px);
}
@media (max-width: 900px) { :root { --lk-nav: 76px; } }

.lp-knee {
  --lk-ease: var(--ease-out-expo);
  --lk-blue: var(--accent-blue);
  --lk-ice: var(--accent-ice);
  --lk-bone-fill: #EEF2F7;
  --lk-bone-line: rgba(11, 29, 58, .5);
}
/* Parts waiting to slide in must not make the page scroll sideways. */
.lp-knee main { overflow-x: clip; }
.lp-knee main *, .lp-knee main *::before, .lp-knee main *::after { box-sizing: border-box; }

/* colors_and_type.css caps every bare <p> at 42rem and underlines every <a>.
   Text here fills the column it sits in. */
.lp-knee main p { max-width: none; }
.lp-knee main a:not(.btn) { border-bottom: 0; }
.lp-knee main h1, .lp-knee main h2, .lp-knee main h3 { font-family: var(--font-display); text-wrap: pretty; }
.lp-knee main em { font-style: italic; }
/* Low on purpose (two elements, no class): any class below can set its own margin. */
main ul, main ol { list-style: none; margin: 0; padding: 0; }
main figure { margin: 0; }

/* A long heading breaks between its halves, never inside one. */
.lp-knee main h2 > .h-lead, .lp-knee main h2 > em, .lk-hero h1 em { display: inline-block; }
/* A jump moves focus to the heading it lands on: ringed for a keyboard, quiet for a mouse. */
.lp-knee main [tabindex="-1"]:focus { outline: none; }
.lp-knee main h2[tabindex="-1"]:focus-visible { outline: 2px solid var(--lk-blue); outline-offset: 6px; border-radius: 4px; }
.lk-surgeon h2[tabindex="-1"]:focus-visible { outline-color: var(--lk-ice); }

.lk-defs { position: absolute; width: 0; height: 0; overflow: hidden; }
.lk-nb { white-space: nowrap; }

/* ---------- buttons: the site's own, with a press that answers ---------- */
.lp-knee main .btn:active { transform: translateY(1px); box-shadow: var(--shadow-sm); transition-duration: var(--dur-fast); }
.lp-knee main .btn--primary:active { background: color-mix(in srgb, var(--accent-blue-hover) 84%, #000); border-color: color-mix(in srgb, var(--accent-blue-hover) 84%, #000); }
.lp-knee main .btn--ghost:active { background: rgba(11, 29, 58, .06); }
.lp-knee main .btn:focus-visible { outline: 2px solid var(--lk-blue); outline-offset: 3px; }
/* A tap is answered by each control's own pressed state, not the grey flash. */
.lp-knee main :is(.btn, .pt-tile, summary, .lk-bar a) { -webkit-tap-highlight-color: transparent; }
.lk-cta { margin-top: clamp(32px, 4vw, 48px); }
.lk-cta--center { text-align: center; }

/* ---------- sections ---------- */
.lk-sec { padding: clamp(56px, 7.6vw, 108px) 0; }
/* White after white: one gap between two parts, not two. */
.lk-inj, .lk-vs, .lk-daysec, .lk-stories, .lk-faqsec { padding-top: 0; }
.lk-h2 {
  font-weight: 300; font-size: clamp(1.95rem, 3.25vw, 2.95rem); line-height: 1.1; letter-spacing: -.012em;
  color: var(--ink); margin: 0 0 clamp(18px, 2vw, 26px);
}
.lk-h2 em { color: var(--ink-soft); }
.lk-lede { font-size: clamp(17px, 1.35vw, 19px); line-height: 1.65; color: var(--ink-soft); margin: 0; }
.lk-closing { font-size: 16.5px; line-height: 1.7; color: var(--ink-soft); margin: clamp(32px, 4vw, 48px) 0 0; }

/* A film: one frame, the loop covering it. The sitewide
   img[width][height] { height: auto } has a video twin to beat. */
.lk-film { position: relative; aspect-ratio: 5 / 6; border-radius: 14px; overflow: hidden; background: #0b1d3a; box-shadow: var(--shadow-md); }
.lk-film video, .lk-film video[width][height] { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; max-width: none; }

/* ================= HERO ================= */
.lk-hero { background: #fff; padding: clamp(26px, 4.4vw, 60px) 0 clamp(34px, 4.4vw, 56px); }
/* The size is capped where the second line still fits while the fonts are
   arriving (the stand-in faces run about a fifth wider), so the headline
   holds its two lines from first paint and nothing under it moves. */
.lk-hero h1 {
  font-weight: 300; font-size: clamp(1.9rem, 4vw, 3.35rem); line-height: 1.07; letter-spacing: -.018em;
  color: var(--ink); margin: 0;
}
.lk-hero h1 > span { display: block; }
.lk-hero h1 em { color: var(--lk-blue); }
.lk-hero__grid {
  display: grid; grid-template-columns: minmax(0, 1fr) clamp(280px, 30vw, 392px);
  gap: clamp(32px, 5.4vw, 84px); align-items: start; margin-top: clamp(22px, 2.8vw, 36px);
}
.lk-hero__copy { display: flex; flex-direction: column; }
.lk-hero__sub { font-size: clamp(17px, 1.4vw, 19px); line-height: 1.65; color: var(--ink-soft); margin: 0; }
.lk-hero__ctas { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 16px; margin: clamp(24px, 2.6vw, 32px) 0 0; }
.lk-hero__next { font-size: 14px; line-height: 1.5; color: var(--ink-muted); margin: 14px 0 0; }
.lk-hero__film { background: #0b1d3a url(../images/knee-3d-bend-poster.webp) center / cover no-repeat; }
/* The scale is the crop the film has always had; the settle is the first
   paint's only motion and starts from a picture that is already there. */
.lk-hero__film video, .lk-hero__film video[width][height] { transform: scale(1.04); animation: lkSettle 1.8s var(--lk-ease) both; }
@keyframes lkSettle { from { transform: scale(1.1); } to { transform: scale(1.04); } }
.lk-film__cap {
  position: absolute; left: 14px; top: 14px; background: #fff; color: var(--ink);
  border-radius: 6px; padding: 7px 11px; font-size: 13px; line-height: 1.2; font-weight: 500; box-shadow: var(--shadow-sm);
}
/* Two facts under the first screen, off a rule that draws itself once. */
.lk-glance {
  position: relative; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px clamp(24px, 3.4vw, 48px);
  margin-top: clamp(26px, 3vw, 38px); padding-top: clamp(20px, 2.2vw, 26px);
}
.lk-glance::before {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 1px; background: var(--border-strong);
  transform-origin: left; animation: lkRule 1.3s var(--lk-ease) .15s both;
}
@keyframes lkRule { from { transform: scaleX(0); } to { transform: scaleX(1); } }
.lp-knee main .lk-glance__n { font-family: var(--font-display); font-size: clamp(1.7rem, 2.4vw, 2.1rem); line-height: 1.05; color: var(--ink); margin: 0; }
.lk-glance__n em { color: var(--lk-blue); }
.lk-glance__text { font-size: 15px; line-height: 1.6; color: var(--ink-soft); margin: 8px 0 0; }
/* Directly under the buttons and the line that follows them, so it is read
   in the first screen. */
.lk-reviewed { font-size: 13.5px; line-height: 1.5; color: var(--ink-muted); margin: 10px 0 0; }

@media (max-width: 860px) {
  /* The italic half takes its own line here in every face, for the same reason. */
  .lk-hero h1 { font-size: clamp(1.9rem, 8.4vw, 2.6rem); }
  .lk-hero h1 em { display: block; }
  /* One column: the words, then the film closes the hero. */
  .lk-hero > .container { display: flex; flex-direction: column; }
  .lk-hero__grid { display: contents; }
  .lk-hero__copy { margin-top: clamp(22px, 2.8vw, 36px); }
  .lk-hero__film { order: 2; margin-top: 44px; }
  /* On a phone the buttons and the line under them come straight after the
     headline and the paragraph follows, so the call is in the first screen. */
  .lk-hero__ctas { order: 1; margin-top: 0; }
  .lk-hero__next, .lk-reviewed { order: 2; }
  .lk-hero__sub { order: 3; margin-top: 22px; }
  .lk-glance { order: 4; }
  .lk-hero__film { max-width: 520px; width: 100%; }
}
@media (max-width: 620px) {
  .lk-glance { grid-template-columns: minmax(0, 1fr); }
  .lk-hero__ctas .btn { flex: 1 1 auto; }
}

/* ================= THE BAR THAT FOLLOWS THE READER ================= */
.lk-bar {
  position: sticky; top: var(--lk-nav); z-index: 45; background: #fff;
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  transition: top .45s var(--lk-ease), box-shadow .4s var(--lk-ease), opacity .3s var(--lk-ease), visibility 0s;
}
.lk-bar.is-on { box-shadow: 0 10px 24px -18px rgba(11, 29, 58, .35); }
/* It steps aside for the closing call, which has nothing to jump to. */
.lk-bar.is-done { opacity: 0; visibility: hidden; transition: top .45s var(--lk-ease), opacity .3s var(--lk-ease), visibility 0s .3s; }
.lk-bar::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px;
  background: var(--lk-blue); opacity: .4; transform-origin: left; transform: scaleX(var(--lk-read, 0));
}
.lk-bar .container { position: relative; }
.lk-bar ul {
  /* Links carry 6px of side room for the focus ring; the row steps back by it so the words still align with the page. */
  margin: 0 -6px; display: flex; gap: clamp(6px, calc(2.2vw - 10px), 22px);
  overflow-x: auto; scrollbar-width: none; overscroll-behavior-x: contain; scroll-snap-type: x proximity;
}
.lk-bar ul::-webkit-scrollbar { display: none; }
.lk-bar li { flex: none; scroll-snap-align: start; }
.lp-knee main .lk-bar a {
  position: relative; display: block; padding: 16px 6px 15px; min-height: 44px; min-width: 44px; text-align: center;
  font-size: 14.5px; font-weight: 500; line-height: 1.5; color: var(--ink-muted); text-decoration: none; white-space: nowrap;
  transition: color .25s var(--lk-ease);
}
.lk-bar a::after {
  content: ""; position: absolute; left: 6px; right: 6px; bottom: 0; height: 2px;
  background: var(--lk-blue); transform: scaleX(0); transform-origin: left; transition: transform .4s var(--lk-ease);
}
@media (hover: hover) { .lp-knee main .lk-bar a:hover { color: var(--ink); } .lk-bar a:hover::after { transform: scaleX(.35); } }
.lp-knee main .lk-bar a:active { color: var(--lk-blue); }
.lp-knee main .lk-bar a[aria-current="location"] { color: var(--ink); }
.lk-bar a[aria-current="location"]::after, .lk-bar a:focus-visible::after { transform: scaleX(1); }
/* The row scrolls sideways, so it clips anything drawn outside a link: the focus ring sits inside. */
.lk-bar a:focus-visible { outline: 2px solid var(--lk-blue); outline-offset: -2px; border-radius: 4px; }
/* A fade at whichever edge still has links beyond it (the page script marks the edges). */
.lk-bar .container::before, .lk-bar .container::after {
  content: ""; position: absolute; top: 0; bottom: 0; width: 44px; z-index: 1;
  pointer-events: none; opacity: 0; transition: opacity .25s var(--lk-ease);
}
.lk-bar .container::before { left: 0; background: linear-gradient(90deg, #fff 35%, rgba(255, 255, 255, 0)); }
.lk-bar .container::after { right: 0; background: linear-gradient(270deg, #fff 35%, rgba(255, 255, 255, 0)); }
.lk-bar.has-left .container::before, .lk-bar.has-right .container::after { opacity: 1; }

/* ================= THE SMALL KNEES ================= */
.lk-bone { fill: var(--lk-bone-fill); stroke: var(--lk-bone-line); stroke-width: 2; stroke-linejoin: round; }
.lk-knee { display: block; overflow: visible; }
.lk-knee path, .lk-ico path, .lk-ico rect, .lk-ico circle { fill: none; stroke-linecap: round; stroke-linejoin: round; }
.lk-knee__lig { stroke: var(--lk-bone-line); stroke-width: 2; }
.lk-knee__torn { stroke: var(--ink); stroke-width: 4.2; stroke-dasharray: 1; }
.lk-knee__fray { stroke: var(--ink); stroke-width: 2.2; }
.lk-knee__touch { stroke: var(--ink); stroke-width: 5; stroke-dasharray: 1; }
.lk-knee path.lk-knee__meniscus { fill: var(--lk-blue); fill-opacity: .22; stroke: var(--lk-blue); stroke-width: 1.8; }
.lk-knee path.lk-knee__meniscus--worn { fill-opacity: .7; stroke-width: 2.4; stroke-dasharray: 1; }
.lk-knee__space { stroke: var(--lk-blue); stroke-width: 5.6; stroke-dasharray: 1; }
.lk-knee__metal { stroke: var(--ink); stroke-width: 5.5; stroke-dasharray: 1; }
.lk-knee path.lk-knee__tray { fill: var(--ink); stroke: none; }
.lk-ico__needle { stroke: var(--lk-blue); stroke-width: 2.4; stroke-dasharray: 1; }
.lk-knee circle.lk-ico__tip, .lk-ico circle.lk-ico__tip { fill: var(--lk-blue); stroke: none; }
.lk-ico__ring { fill: none; stroke: var(--lk-blue); stroke-width: 1.6; opacity: .55; transform-box: fill-box; transform-origin: center; }

/* The marked part of each knee draws once, when its row is first seen. */
.lk-js [data-r]:not(.is-seen) :is(.lk-knee__torn, .lk-knee__touch, .lk-knee__space, .lk-knee__metal, .lk-knee__meniscus--worn, .lk-ico__needle, .lk-ico__line) { stroke-dashoffset: 1; }
.lk-js [data-r]:not(.is-seen) :is(.lk-ico__tip, .lk-ico__ring, .lk-ico__dot, .lk-ico__wedge, .lk-knee__tray, .lk-knee__fray) { opacity: 0; }
[data-r].is-seen :is(.lk-knee__torn, .lk-knee__touch, .lk-knee__space, .lk-knee__metal, .lk-knee__meniscus--worn, .lk-ico__needle) { animation: lkDraw 1s var(--lk-ease) .35s both; }
[data-r].is-seen .lk-ico__line { animation: lkDraw 1.1s var(--lk-ease) .2s both; }
@keyframes lkDraw { from { stroke-dashoffset: 1; } to { stroke-dashoffset: 0; } }
:is(.lk-ico__tip, .lk-ico__ring, .lk-knee__tray, .lk-knee__fray) { transition: opacity .5s var(--lk-ease) 1s; }
/* Where the needle rests: one slow ring, only while the drawing is on screen. */
.is-live .lk-ico__ring { animation: lkRing 2.8s ease-out 1.4s infinite; }
@keyframes lkRing { 0% { transform: scale(.6); opacity: .7; } 70%, 100% { transform: scale(1.7); opacity: 0; } }

/* ================= WHO QUALIFIES: a film beside four knees ================= */
.lk-qualify__grid {
  display: grid; grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr);
  gap: clamp(32px, 5.4vw, 84px); align-items: start; margin-top: clamp(34px, 4.4vw, 56px);
}
.lk-qualify__film { position: sticky; top: calc(var(--lk-nav) + var(--lk-bar) + 24px); }
.lk-fit__row { display: grid; grid-template-columns: 112px minmax(0, 1fr); gap: clamp(18px, 2.6vw, 34px); align-items: start; padding: 26px 0; }
.lk-fit__row:first-child { padding-top: 0; }
.lk-fit__row + .lk-fit__row { border-top: 1px solid var(--border); }
.lk-fit__row .lk-knee { width: 112px; height: 140px; margin-top: -8px; }
.lk-fit__verdict { font-size: 14px; font-weight: 600; line-height: 1.3; color: var(--ink-muted); margin: 2px 0 6px; }
.lk-fit__row--frank .lk-fit__verdict { color: var(--ink); }
.lk-fit__row--also .lk-fit__verdict, .lk-fit__row--strong .lk-fit__verdict { color: var(--lk-blue); }
.lp-knee main :is(.lk-fit__row, .lk-three__item, .lk-step, .lk-factor) h3 { text-wrap: balance; }
.lk-fit__row h3 { font-weight: 400; font-size: clamp(1.4rem, 1.95vw, 1.7rem); line-height: 1.16; color: var(--ink); margin: 0 0 8px; }
.lk-fit__row p:not(.lk-fit__verdict) { font-size: 16px; line-height: 1.65; color: var(--ink-soft); margin: 0; }
@media (max-width: 900px) {
  .lk-qualify__grid { grid-template-columns: minmax(0, 1fr); }
  .lk-qualify__film { position: relative; top: auto; max-width: 520px; width: 100%; }
}
@media (max-width: 480px) {
  .lk-fit__row { grid-template-columns: 68px minmax(0, 1fr); }
  .lk-fit__row .lk-knee { width: 68px; height: 85px; margin-top: 0; }
}

/* ================= THE INJECTION: a paragraph beside the film, then three drawn things ================= */
.lk-inj__top {
  display: grid; grid-template-columns: minmax(0, 1fr) clamp(240px, 27vw, 340px);
  gap: clamp(32px, 6vw, 96px); align-items: center;
}
.lk-inj__lede { font-size: clamp(17.5px, 1.5vw, 20.5px); line-height: 1.62; }
.lk-three { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: clamp(40px, 5vw, 68px); }
.lk-three__item { padding: 0 clamp(18px, 2.6vw, 36px); border-left: 1px solid var(--border); }
.lk-three__item:first-child { padding-left: 0; border-left: 0; }
.lk-three__item:last-child { padding-right: 0; }
/* The three line up part for part: a two-line heading lowers the paragraph in all of them. */
@supports (grid-template-rows: subgrid) {
  @media (min-width: 901px) {
    .lk-three { grid-template-rows: repeat(4, auto); }
    .lk-three__item { display: grid; grid-template-rows: subgrid; grid-row: span 4; }
    .lk-three__item > * { align-self: start; }
  }
}
.lk-ico { display: block; width: 108px; height: 99px; margin: 0 0 18px -9px; overflow: visible; }
.lk-ico__line { stroke: var(--ink); stroke-width: 2.2; stroke-dasharray: 1; }
.lk-ico__soft { stroke: var(--lk-bone-line); stroke-width: 2; }
/* Three cell types drop into the vial one after another. */
.lk-ico circle.lk-ico__dot { stroke: var(--lk-blue); stroke-width: 2; transform-box: fill-box; transform-origin: center; }
.lk-ico circle.lk-ico__dot--a { fill: var(--lk-blue); }
.lk-ico circle.lk-ico__dot--b { fill: #fff; }
.lk-ico circle.lk-ico__dot--c { fill: var(--ink); stroke: var(--ink); }
[data-r].is-seen .lk-ico__dot { animation: lkDrop .7s var(--lk-ease) .9s both; }
[data-r].is-seen .lk-ico__dot--b { animation-delay: 1.05s; }
[data-r].is-seen .lk-ico__dot--c { animation-delay: 1.2s; }
@keyframes lkDrop { from { opacity: 0; transform: translateY(-16px); } 70% { opacity: 1; transform: translateY(2px); } to { opacity: 1; transform: none; } }
/* The clock's two shaded stretches open from its centre: up to 25 minutes, then on to 45. */
.lk-ico path.lk-ico__wedge { fill: var(--lk-blue); stroke: none; transform-box: view-box; transform-origin: 60px 55px; }
.lk-ico path.lk-ico__wedge--a { fill-opacity: .3; }
.lk-ico path.lk-ico__wedge--b { fill-opacity: .13; }
[data-r].is-seen .lk-ico__wedge { animation: lkSweep .7s var(--lk-ease) .8s both; }
[data-r].is-seen .lk-ico__wedge--b { animation-delay: 1.15s; }
@keyframes lkSweep { from { opacity: 0; transform: scale(.35); } to { opacity: 1; transform: none; } }
.lk-three__what { font-size: 14px; font-weight: 600; line-height: 1.3; color: var(--lk-blue); margin: 0 0 6px; }
.lk-three__item h3 { font-weight: 400; font-size: clamp(1.35rem, 1.85vw, 1.6rem); line-height: 1.18; color: var(--ink); margin: 0 0 10px; }
.lk-three__item p:not(.lk-three__what) { font-size: 15.5px; line-height: 1.68; color: var(--ink-soft); margin: 0; }
@media (max-width: 900px) {
  .lk-inj__top { grid-template-columns: minmax(0, 1fr); }
  .lk-inj__film { max-width: 520px; width: 100%; }
  .lk-three { grid-template-columns: minmax(0, 1fr); }
  .lk-three__item, .lk-three__item:first-child, .lk-three__item:last-child {
    display: grid; grid-template-columns: 72px minmax(0, 1fr); column-gap: 20px; padding: 26px 0; border-left: 0; border-top: 1px solid var(--border);
  }
  .lk-three__item:first-child { padding-top: 0; border-top: 0; }
  .lk-three__item > :not(svg) { grid-column: 2; }
  .lk-ico { grid-row: 1 / span 3; width: 72px; height: 66px; margin: 0; }
}

/* ================= TWO TOOLS: two bands, each a knee, a name and what it is for ================= */
.lk-vs__pair { display: grid; gap: clamp(14px, 1.6vw, 20px); margin-top: clamp(34px, 4.4vw, 56px); }
.lk-vs__col {
  display: grid; grid-template-columns: 118px minmax(0, .8fr) minmax(0, 1.2fr); column-gap: clamp(24px, 4vw, 60px); align-items: start;
  border-radius: 16px; padding: clamp(24px, 3vw, 40px) clamp(22px, 3.2vw, 44px);
}
.lk-vs__col--surgery { background: #fff; box-shadow: inset 0 0 0 1px var(--border-strong); }
.lk-vs__col--cells { background: var(--accent-wash); --lk-bone-fill: #fff; }
.lk-vs__knee { width: 118px; height: 148px; }
.lk-vs__name { font-size: 14px; font-weight: 600; line-height: 1.3; color: var(--ink-muted); margin: 4px 0 8px; }
.lk-vs__col--cells .lk-vs__name { color: var(--lk-blue); }
.lk-vs__col h3 { font-weight: 400; font-size: clamp(1.5rem, 2.2vw, 1.95rem); line-height: 1.15; color: var(--ink); margin: 0; text-wrap: balance; }
.lk-vs__col li { position: relative; padding: 13px 0 13px 26px; font-size: 16px; line-height: 1.62; color: var(--ink-soft); border-top: 1px solid var(--border); }
.lk-vs__col li:first-child { border-top: 0; padding-top: 6px; }
.lk-vs__col li:last-child { padding-bottom: 0; }
.lk-vs__col li::before { content: ""; position: absolute; left: 2px; top: calc(13px + .76em); width: 12px; height: 2px; background: var(--ink-muted); }
.lk-vs__col li:first-child::before { top: calc(6px + .76em); }
.lk-vs__col--cells li::before { background: var(--lk-blue); }
.lk-vs__closing {
  font-family: var(--font-display); font-weight: 300; font-size: clamp(1.3rem, 2vw, 1.7rem); line-height: 1.4;
  color: var(--ink); text-align: center; margin: clamp(34px, 4.4vw, 52px) 0 0;
}
.lk-vs .lk-cta { margin-top: 26px; }
@media (max-width: 900px) {
  .lk-vs__col { grid-template-columns: 84px minmax(0, 1fr); row-gap: 20px; align-items: center; }
  .lk-vs__knee { width: 84px; height: 105px; }
  .lk-vs__col ul { grid-column: 1 / -1; }
  .lk-vs__col li:first-child { border-top: 1px solid var(--border); padding-top: 13px; }
  .lk-vs__col li:first-child::before { top: calc(13px + .76em); }
}

/* ================= A SURGEON'S KNEE (navy) ================= */
.lk-surgeon { background: var(--navy-brand); color: #fff; }
.lk-surgeon .lk-h2 { color: #fff; }
.lk-surgeon .lk-h2 em { color: var(--lk-ice); }
.lk-surgeon__grid {
  display: grid; grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
  grid-template-areas: "film film" "words creds"; gap: clamp(30px, 4vw, 52px) clamp(36px, 6vw, 92px); margin-top: clamp(8px, 1.4vw, 18px);
}
.lk-surgeon__film { grid-area: film; }
.lk-surgeon__words { grid-area: words; }
.lk-creds { grid-area: creds; }
.lk-surgeon .lk-lede { color: rgba(255, 255, 255, .86); }
.lk-surgeon__fine { font-size: 14px; line-height: 1.6; color: rgba(255, 255, 255, .72); margin: 20px 0 0; }
.lk-surgeon .pt-tile--wide { aspect-ratio: 2048 / 858; border-radius: 16px; }
.lk-surgeon .pt-tile--wide .pt-tile__loop { object-position: 68% center; }
.lk-surgeon .pt-tile--wide .pt-tile__play { width: 68px; height: 68px; }
.lk-surgeon .pt-tile--wide .pt-tile__play svg { width: 24px; height: 24px; }
/* The one film on the page that plays from our own files: its button breathes while it is on screen. */
.lk-surgeon__film.is-live .pt-tile__play::after { content: ""; position: absolute; inset: 0; border-radius: 50%; animation: lkPlay 2.8s ease-out 1.2s infinite; }
@media (hover: hover) { .lk-surgeon__film.is-live .pt-tile:hover .pt-tile__play::after { animation: none; } }
@keyframes lkPlay { from { box-shadow: 0 0 0 0 rgba(255, 255, 255, .5); } 70%, to { box-shadow: 0 0 0 20px rgba(255, 255, 255, 0); } }
.lk-surgeon .pt-fig__cap { color: rgba(255, 255, 255, .8); }
.lk-creds__lead { font-size: 14px; font-weight: 600; line-height: 1.3; color: var(--lk-ice); margin: 0 0 6px; }
.lk-creds__list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: clamp(20px, 3vw, 40px); }
.lk-creds__list li { position: relative; padding: 15px 0 16px; }
/* Each credential sits on a rule that draws from the left as it arrives. */
.lk-creds__list li::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 1px; background: rgba(255, 255, 255, .22); transform-origin: left; transition: transform .9s var(--lk-ease) var(--lk-d, 0s); }
.lk-js .lk-creds__list li:not(.is-seen)::before { transform: scaleX(0); }
.lk-creds__list h3 { font-weight: 400; font-size: 1.28rem; line-height: 1.2; color: #fff; margin: 0 0 4px; }
.lk-creds__list p { font-size: 14.5px; line-height: 1.55; color: rgba(255, 255, 255, .74); margin: 0; }
@media (max-width: 900px) {
  .lk-surgeon__grid { grid-template-columns: minmax(0, 1fr); grid-template-areas: "film" "words" "creds"; }
}
@media (max-width: 480px) { .lk-creds__list { grid-template-columns: minmax(0, 1fr); } }

/* ================= BONE ON BONE: the short one ================= */
.lk-bob__grid { display: grid; grid-template-columns: clamp(220px, 30vw, 400px) minmax(0, 1fr); gap: clamp(30px, 6vw, 96px); align-items: center; }
.lk-bob__fig { aspect-ratio: 1; border-radius: 14px; overflow: hidden; background: #0b1220; box-shadow: var(--shadow-md); }
.lk-bob__fig img, .lk-bob__fig img[width][height] { display: block; width: 100%; height: 100%; object-fit: cover; }
.lk-bob__lede { font-family: var(--font-display); font-weight: 300; font-size: clamp(1.25rem, 1.9vw, 1.62rem); line-height: 1.45; color: var(--ink); margin: 0; }
@media (max-width: 780px) {
  .lk-bob__grid { grid-template-columns: minmax(0, 1fr); }
  .lk-bob__fig { max-width: 480px; }
}

/* ================= COST: three factors, and a quote with no number on it yet ================= */
.lk-cost__grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr); gap: clamp(32px, 6vw, 96px); align-items: start; margin-top: clamp(30px, 4vw, 52px); }
.lk-factor { padding: 24px 0; border-top: 1px solid var(--border); }
.lk-factor:last-child { border-bottom: 1px solid var(--border); }
.lp-knee main .lk-factor__name { font-size: 14px; font-weight: 600; line-height: 1.3; color: var(--lk-blue); margin: 0 0 6px; }
.lk-factor h3 { font-weight: 400; font-size: clamp(1.4rem, 1.95vw, 1.7rem); line-height: 1.16; color: var(--ink); margin: 0 0 6px; }
.lk-factor p:not(.lk-factor__name) { font-size: 16px; line-height: 1.65; color: var(--ink-soft); margin: 0; }
.lk-sheet { position: sticky; top: calc(var(--lk-nav) + var(--lk-bar) + 28px); max-width: 300px; justify-self: end; width: 100%; }
.lk-sheet svg { display: block; width: 100%; height: auto; overflow: visible; filter: drop-shadow(0 14px 28px rgba(11, 29, 58, .1)); }
.lk-sheet path, .lk-sheet rect, .lk-sheet circle { fill: none; stroke-linecap: round; stroke-linejoin: round; }
.lk-sheet path.lk-sheet__paper { fill: #fff; stroke: var(--border-strong); stroke-width: 1.5; }
.lk-sheet__fold { stroke: var(--border-strong); stroke-width: 1.5; }
.lk-sheet__head { stroke: var(--ink); stroke-width: 5; opacity: .82; }
.lk-sheet__sum { stroke: var(--border-strong); stroke-width: 1.5; }
/* The total stays an empty box: nothing is quoted until the imaging is read. */
.lk-sheet__total { stroke: var(--ink-muted); stroke-width: 1.6; stroke-dasharray: 4 4; }
.lk-sheet__ico { stroke: var(--lk-blue); stroke-width: 1.8; }
.lk-sheet__rule { stroke: var(--ink); stroke-width: 4; opacity: .8; }
.lk-sheet__tick { stroke: var(--lk-blue); stroke-width: 2.6; stroke-dasharray: 1; }
.lk-sheet__line { transition: opacity .5s var(--lk-ease); }
.lk-sheet__tick { transition: stroke-dashoffset .6s var(--lk-ease) .1s; }
/* Beside the list, each line of the quote is set as its factor is read. */
.lk-sheet.is-led .lk-sheet__line:not(.is-set) { opacity: .22; }
.lk-sheet.is-led .lk-sheet__line:not(.is-set) .lk-sheet__tick { stroke-dashoffset: 1; }
@media (max-width: 820px) {
  .lk-cost__grid { grid-template-columns: minmax(0, 1fr); }
  .lk-sheet { position: static; order: -1; max-width: 190px; justify-self: start; }
}

/* ================= THE DAY: four loops on one line ================= */
.lk-day { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: clamp(18px, 2.4vw, 32px); margin-top: clamp(44px, 5vw, 64px); }
.lk-step { position: relative; padding-top: 34px; --lk-f: 1; }
/* One dot per step and one connector per gap, dot to dot, and nothing after the last. */
.lk-step::before {
  content: ""; position: absolute; left: 0; top: 0; width: 14px; height: 14px; border-radius: 50%;
  background: var(--lk-blue); box-shadow: inset 0 0 0 2px var(--lk-blue); z-index: 1;
  transition: background-color .4s var(--lk-ease), box-shadow .4s var(--lk-ease), transform .4s var(--lk-ease);
}
/* Unlit only while the page script is leading the line; with no script the day reads as done. */
.lk-booted .lk-step:not(.is-lit)::before { background: #fff; box-shadow: inset 0 0 0 2px var(--ink-muted); transform: scale(.86); }
/* A step that has just been reached says so once. */
.lk-booted .lk-step.is-lit::before { animation: lkLit .7s var(--lk-ease); }
@keyframes lkLit { from { box-shadow: inset 0 0 0 2px var(--lk-blue), 0 0 0 0 rgba(45, 110, 177, .5); } to { box-shadow: inset 0 0 0 2px var(--lk-blue), 0 0 0 10px rgba(45, 110, 177, 0); } }
.lk-step:not(:last-child)::after {
  content: ""; position: absolute; left: 14px; top: 6px; height: 2px; width: calc(100% + clamp(18px, 2.4vw, 32px) - 14px);
  background: linear-gradient(90deg, var(--lk-blue) calc(var(--lk-f) * 100%), var(--border-strong) 0);
}
@supports (grid-template-rows: subgrid) {
  @media (min-width: 981px) {
    .lk-day { grid-template-rows: repeat(4, auto); row-gap: 0; }
    .lk-step { display: grid; grid-template-rows: subgrid; grid-row: span 4; }
    .lk-step__body { display: contents; }
    .lk-step .lk-step__when { margin-top: 20px; }
    .lk-step h3, .lk-step p { align-self: start; }
  }
}
.lk-step__film { position: relative; aspect-ratio: 1; border-radius: 12px; overflow: hidden; background: #0b1d3a; box-shadow: var(--shadow-sm); }
.lk-step__film video, .lk-step__film video[width][height] { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; max-width: none; }
.lk-step__body { padding-top: 18px; }
.lk-step__when { font-size: 14px; font-weight: 600; line-height: 1.3; color: var(--lk-blue); margin: 0 0 6px; transition: color .4s var(--lk-ease); }
.lk-booted .lk-step:not(.is-lit) .lk-step__when { color: var(--ink-muted); }
.lk-step h3 { font-weight: 400; font-size: clamp(1.3rem, 1.75vw, 1.5rem); line-height: 1.18; color: var(--ink); margin: 0 0 8px; }
.lk-step__body p:not(.lk-step__when) { font-size: 15.5px; line-height: 1.66; color: var(--ink-soft); margin: 0; }
@media (max-width: 980px) {
  /* Down the page: the line runs down the left, the loop is a small square beside its heading. */
  .lk-day { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .lk-step { display: grid; grid-template-columns: clamp(96px, 26vw, 200px) minmax(0, 1fr); column-gap: clamp(16px, 3vw, 28px); padding: 0 0 34px 30px; align-items: start; }
  .lk-step:last-child { padding-bottom: 0; }
  .lk-step::before { top: 4px; }
  .lk-step:not(:last-child)::after {
    left: 6px; top: 18px; width: 2px; height: calc(100% - 14px);
    background: linear-gradient(180deg, var(--lk-blue) calc(var(--lk-f) * 100%), var(--border-strong) 0);
  }
  .lk-step__body { padding-top: 0; }
}
@media (max-width: 560px) {
  .lk-step { grid-template-columns: 104px minmax(0, 1fr); }
  /* The words run full width under the small loop and its heading. */
  .lk-step__body { display: contents; }
  .lk-step__when { grid-column: 2; align-self: end; margin-top: 4px; }
  .lk-step h3 { grid-column: 2; }
  .lk-step__film { grid-row: 1 / span 2; }
  .lk-step__body p:not(.lk-step__when) { grid-column: 1 / -1; margin-top: 14px; }
}

/* ================= PATIENT STORIES: the knee first, and largest ================= */
.lk-stories__grid {
  display: grid; grid-template-columns: minmax(0, .5fr) minmax(0, 1fr); grid-template-areas: "head row" "cta row";
  grid-template-rows: auto 1fr; column-gap: clamp(32px, 5.4vw, 84px); align-items: start; margin-top: clamp(4px, .8vw, 10px);
}
.lk-stories__head { grid-area: head; }
.lk-stories__row { grid-area: row; position: relative; }
.lk-stories__cta { grid-area: cta; margin-top: 28px; }
/* The lead story is as tall as the two rows beside it: every tile keeps its 3:4. */
.lk-tiles { --g: 14px; display: grid; grid-template-columns: calc(50% - .625 * var(--g)) minmax(0, 1fr); gap: var(--g); align-items: start; }
.lk-tiles__four { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--g); }
.lk-stories .pt-fig { position: relative; }
/* The name sits on the film's own foot, over a shade deep enough to read on any frame. */
.lk-stories .pt-fig__cap {
  position: absolute; left: 0; right: 0; bottom: 0; margin: 0; padding: 44px 14px 12px; border-radius: 0 0 12px 12px;
  background: linear-gradient(180deg, rgba(7, 18, 38, 0), rgba(7, 18, 38, .86) 62%); color: #fff; pointer-events: none;
  transition: transform .5s var(--ease);
}
@media (hover: hover) { .lk-stories .pt-tile:hover + .pt-fig__cap { transform: translateY(-6px); } }
.lk-tiles__four .pt-fig__cap { font-size: 13px; padding: 36px 12px 10px; }
.lk-tiles__four .pt-tile__play { width: 46px; height: 46px; }
@media (max-width: 1180px) {
  .lk-stories__grid { grid-template-columns: minmax(0, 1fr); grid-template-areas: "head" "row" "cta"; }
  .lk-tiles { max-width: 860px; }
  .lk-stories__row { margin-top: clamp(26px, 4vw, 40px); }
  .lk-stories__cta { margin-top: clamp(28px, 4vw, 40px); }
}
@media (max-width: 760px) {
  /* A row that slides: one story and the edge of the next. */
  .lk-tiles {
    max-width: none; display: flex; gap: 12px; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none;
    margin: 0 calc(-1 * clamp(20px, 4vw, 56px)); padding: 6px clamp(20px, 4vw, 56px) 14px; scroll-padding-left: clamp(20px, 4vw, 56px);
    overscroll-behavior-x: contain;
  }
  .lk-tiles::-webkit-scrollbar { display: none; }
  .lk-tiles__four { display: contents; }
  .lk-stories .pt-fig { flex: 0 0 min(68vw, 300px); scroll-snap-align: start; }
  .lk-tiles__four .pt-fig__cap { font-size: 14px; padding: 44px 14px 12px; }
  .lk-tiles__four .pt-tile__play { width: 52px; height: 52px; }
  .lk-stories__row::after {
    content: ""; position: absolute; top: 0; bottom: 0; right: calc(-1 * clamp(20px, 4vw, 56px)); width: 44px; pointer-events: none;
    background: linear-gradient(270deg, #fff, rgba(255, 255, 255, 0)); opacity: 0; transition: opacity .25s var(--lk-ease);
  }
  .lk-stories__row.has-right::after { opacity: 1; }
  /* Shown once, as the row first comes into view: it slides. */
  .lk-tiles.is-cue .pt-fig { animation: lkCue 1.2s var(--lk-ease) .35s; }
  @keyframes lkCue { 40% { transform: translateX(-28px); } }
}

/* ================= THE QUIZ: a clean white band ================= */
.lp-knee main > .qz { background: #fff; }
/* Sent here by the hero's second button: the card says so for a moment. */
.lp-knee #fit .qz__card--compact { transition: box-shadow .5s var(--lk-ease); }
.lp-knee #fit.is-arrived .qz__card--compact { box-shadow: 0 0 0 2px var(--lk-blue), 0 18px 44px rgba(11, 29, 58, .1); animation: lkArrive 1.2s var(--lk-ease); }
@keyframes lkArrive { from { box-shadow: 0 0 0 0 var(--lk-blue), 0 0 0 rgba(11, 29, 58, 0); } 40% { box-shadow: 0 0 0 5px var(--lk-blue), 0 18px 44px rgba(11, 29, 58, .1); } }

/* ================= QUESTIONS ================= */
.lk-faq { display: grid; grid-template-columns: minmax(0, .5fr) minmax(0, 1fr); gap: clamp(32px, 5.4vw, 84px); align-items: start; margin-top: clamp(4px, .8vw, 10px); }
.lk-faq__head { position: sticky; top: calc(var(--lk-nav) + var(--lk-bar) + 28px); }
.lk-faq__head .lk-cta { margin-top: 26px; }
.lk-faq__list details { border-top: 1px solid var(--border); }
.lk-faq__list details:first-child > summary { padding-top: 4px; }
.lk-faq__list details:first-child { border-top: 0; }
.lk-faq__list details:last-of-type { border-bottom: 1px solid var(--border); }
.lk-faq__list summary {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; padding: 22px 2px; min-height: 44px; cursor: pointer; list-style: none;
  font-family: var(--font-display); font-weight: 400; font-size: clamp(1.2rem, 1.7vw, 1.45rem); line-height: 1.32; color: var(--ink);
  transition: color .25s var(--lk-ease);
}
.lk-faq__list summary::-webkit-details-marker { display: none; }
/* The plus is drawn, and turns into a minus when the answer is open. */
.lk-faq__list summary::after {
  content: ""; flex: none; width: 16px; height: 16px; margin-top: .42em;
  background: linear-gradient(var(--lk-blue), var(--lk-blue)) center / 16px 2px no-repeat, linear-gradient(var(--lk-blue), var(--lk-blue)) center / 2px 16px no-repeat;
  transition: transform .4s var(--lk-ease), background-size .3s var(--lk-ease);
}
.lk-faq__list details[open] > summary::after { transform: rotate(180deg); background-size: 16px 2px, 2px 0; }
@media (hover: hover) { .lk-faq__list summary:hover { color: var(--lk-blue); } }
.lk-faq__list summary:active { color: var(--accent-blue-hover); }
.lk-faq__list summary:focus-visible { outline: 2px solid var(--lk-blue); outline-offset: 2px; border-radius: 4px; }
.lk-faq__a { padding: 0 44px 26px 2px; font-size: 16px; line-height: 1.75; color: var(--ink-soft); overflow: hidden; }
@media (max-width: 900px) {
  .lk-faq { grid-template-columns: minmax(0, 1fr); }
  .lk-faq__head { position: static; }
}

/* ================= THE CLOSING CALL (navy) ================= */
.lk-close { background: var(--navy-mid); color: #fff; padding: clamp(80px, 11vw, 150px) 0; text-align: center; }
.lk-close__inner { max-width: 52rem; margin: 0 auto; padding: 0 clamp(20px, 4vw, 56px); display: flex; flex-direction: column; align-items: center; }
.lk-close h2 { font-weight: 300; font-size: clamp(2.1rem, 4.4vw, 3.6rem); line-height: 1.06; letter-spacing: -.012em; color: #fff; margin: 0; }
.lk-close h2 em { color: var(--lk-ice); }
.lp-knee main .lk-close p { font-size: 17px; line-height: 1.7; color: rgba(255, 255, 255, .84); max-width: 40rem; margin: 24px 0 38px; }
.lp-knee main .lk-close .btn--ice { background: #fff; border-color: #fff; color: var(--ink); padding: 17px 32px; font-size: 16px; }
@media (hover: hover) { .lp-knee main .lk-close .btn--ice:hover { background: var(--accent-wash); border-color: var(--accent-wash); transform: translateY(-3px); box-shadow: 0 22px 56px rgba(0, 0, 0, .34); } }
.lp-knee main .lk-close .btn--ice:active { background: #d9e6f3; transform: translateY(1px); }
.lp-knee main .lk-close .btn:focus-visible { outline-color: #fff; }
.lk-close__disclaimer { margin-top: 44px; padding-top: 22px; border-top: 1px solid rgba(255, 255, 255, .18); color: rgba(255, 255, 255, .72); font-size: 13.5px; line-height: 1.7; max-width: 44rem; }

/* ================= REVEALS =================
   Hidden only while .lk-js is on <html>; shown per element by the page
   script, and all at once for reduced motion and print. Opacity and
   transform only, so a waiting block keeps its box. */
.lk-js [data-r] {
  opacity: 0; transform: translateY(22px);
  transition: opacity .7s var(--lk-ease) var(--lk-d, 0s), transform .9s var(--lk-ease) var(--lk-d, 0s);
}
.lk-js [data-r="left"] { transform: translateX(-40px); }
.lk-js [data-r="right"] { transform: translateX(40px); }
.lk-js [data-r="scale"] { transform: scale(.955); }
.lk-js [data-r].is-seen { opacity: 1; transform: none; }

/* ================= PATIENT TILES AND THEIR DIALOG =================
   Driven by scripts/celva-home.js (shared, never edited here). These are the
   rules it needs, carried from styles/celva-home.css, which this page no
   longer loads. */
.pt-tile {
  display: block; position: relative; width: 100%; aspect-ratio: 3 / 4; padding: 0; border: 0; border-radius: 12px; overflow: hidden;
  cursor: pointer; background: var(--navy-mid); box-shadow: var(--shadow-sm);
  transition: transform .5s var(--ease), box-shadow .5s var(--ease);
}
@media (hover: hover) {
  .pt-tile:hover { transform: translateY(-6px); box-shadow: var(--shadow-lift); }
  .pt-tile:hover .pt-tile__scrim { opacity: .6; }
  .pt-tile:hover .pt-tile__play { transform: translate(-50%, -50%) scale(1.12); background: #fff; }
}
.pt-tile:active { transform: translateY(0) scale(.99); box-shadow: var(--shadow-sm); transition-duration: .12s; }
.pt-tile:focus-visible { outline: 3px solid var(--lk-blue); outline-offset: 3px; }
.lk-surgeon .pt-tile:focus-visible { outline-color: #fff; }
.pt-tile__loop { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; display: block; max-width: none; }
.pt-tile__scrim { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(11, 29, 58, .05), rgba(11, 29, 58, .55)); transition: opacity .4s; }
.pt-tile__play {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); width: 52px; height: 52px; border-radius: 50%;
  background: rgba(255, 255, 255, .94); display: grid; place-items: center; transition: transform .45s var(--ease), background .3s;
}
.pt-tile__play svg { display: block; width: 20px; height: 20px; fill: var(--ink); margin-left: 2px; }
.pt-fig__cap { margin-top: 12px; font-size: 14px; line-height: 1.45; font-weight: 500; color: var(--ink-muted); text-align: left; }
.pt-modal { position: fixed; inset: 0; z-index: 200; display: grid; place-items: center; }
.pt-modal[hidden] { display: none; }
.pt-modal__backdrop { position: absolute; inset: 0; background: rgba(7, 18, 38, .88); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); }
/* Capped by height too, so on a landscape phone the frame and the close
   button above it both fit the screen (scroll is locked while it is open). */
.pt-modal__box { position: relative; width: min(920px, 92vw, calc((100vh - 128px) * 16 / 9)); width: min(920px, 92vw, calc((100dvh - 128px) * 16 / 9)); }
.pt-modal__frame { position: relative; aspect-ratio: 16 / 9; border-radius: 12px; overflow: hidden; background: #000; box-shadow: 0 40px 100px rgba(0, 0, 0, .6); }
/* Until the player paints, the story's own poster and name hold the frame,
   and the player fades in over them. */
.pt-modal__frame iframe, .pt-modal__frame video { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; display: block; background: #000; opacity: 0; transition: opacity .5s var(--ease); }
.pt-modal__frame.is-ready iframe, .pt-modal__frame.is-ready video { opacity: 1; }
.pt-modal__hold { position: absolute; inset: 0; background: var(--ink) center / cover no-repeat; display: flex; align-items: flex-end; padding: 22px 26px; }
.pt-modal__hold::before { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(7, 18, 38, .85), rgba(7, 18, 38, .25) 55%); }
.pt-modal__hold span { position: relative; color: #fff; font-family: var(--font-display); font-size: clamp(20px, 2.4vw, 28px); line-height: 1.2; }
.pt-modal__close { position: absolute; right: -8px; top: -50px; min-width: 44px; min-height: 44px; background: transparent; border: 0; border-radius: 6px; color: #fff; font-size: 1.9rem; line-height: 1; cursor: pointer; transition: transform .2s var(--ease), background-color .2s; }
@media (hover: hover) { .pt-modal__close:hover { background: rgba(255, 255, 255, .12); } }
.pt-modal__close:active { transform: scale(.92); }
.pt-modal__close:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }

/* ================= REDUCED MOTION, PRINT ================= */
@media (prefers-reduced-motion: reduce) {
  .lp-knee main *, .lp-knee main *::before, .lp-knee main *::after, .pt-modal * { animation: none !important; transition: none !important; }
  .lk-js [data-r] { opacity: 1; transform: none; }
  .lk-js [data-r] :is(.lk-knee__torn, .lk-knee__touch, .lk-knee__space, .lk-knee__metal, .lk-knee__meniscus--worn, .lk-ico__needle, .lk-ico__line) { stroke-dashoffset: 0 !important; }
  .lk-js [data-r] :is(.lk-ico__tip, .lk-ico__ring, .lk-ico__dot, .lk-ico__wedge, .lk-knee__tray, .lk-knee__fray) { opacity: 1 !important; transform: none !important; }
  .lk-js .lk-creds__list li::before { transform: none !important; }
  .lk-ico__ring { opacity: .55; }
}
@media print {
  .lp-knee main *, .lp-knee main *::before, .lp-knee main *::after { animation: none !important; transition: none !important; }
  .lk-js [data-r] { opacity: 1 !important; transform: none !important; }
  .lk-js [data-r] :is(.lk-knee__torn, .lk-knee__touch, .lk-knee__space, .lk-knee__metal, .lk-knee__meniscus--worn, .lk-ico__needle, .lk-ico__line) { stroke-dashoffset: 0 !important; }
  .lk-js [data-r] :is(.lk-ico__tip, .lk-ico__ring, .lk-ico__dot, .lk-ico__wedge, .lk-knee__tray, .lk-knee__fray) { opacity: 1 !important; transform: none !important; }
  .lk-js .lk-creds__list li::before { transform: none !important; }
  .lk-bar, .pt-modal, .pt-tile__play { display: none !important; }
  .lk-qualify__film, .lk-sheet, .lk-faq__head { position: relative; top: auto; }
  .lk-sheet .lk-sheet__line { opacity: 1 !important; }
  .lk-sheet .lk-sheet__tick { stroke-dashoffset: 0 !important; }
  .lk-surgeon, .lk-close { background: #fff !important; color: #000 !important; }
  .lk-surgeon *, .lk-close * { color: #111 !important; }
  .lk-creds__list li::before { background: #999 !important; }
  .lk-faq__list summary::after { display: none; }
  .lk-tiles { display: grid !important; grid-template-columns: repeat(5, 1fr) !important; overflow: visible !important; margin: 0 !important; padding: 0 !important; }
  .lk-tiles__four { display: contents !important; }
  .lk-stories .pt-fig__cap { position: static; background: none; color: #111 !important; padding: 6px 0 0; }
  .lk-sec { padding: 28px 0; break-inside: avoid; }
}