/* Laser Dentistry — /laser-dentistry/
   Scoped to body.page-laser. Page hero, stick, ledger, points, buttons, accordion and related are shared (site.css).
   Signature: the scan. A round field of bacteria that a band of laser light passes down, as on the home page's
   x-ray, clearing them as it goes (LBR) or only inside the hatched patches of diseased tissue (LAPT). */

.page-laser :is(.ld-uses__text) a {
  color: var(--ink); text-decoration: underline; text-decoration-color: var(--sun); text-decoration-thickness: 1px; text-underline-offset: .22em;
  transition: color .3s, text-decoration-color .3s;
}
.page-laser :is(.ld-uses__text) a:hover { color: var(--ink-3); text-decoration-color: var(--ink-3); }

/* ---------- 01 · Laser dentistry: heading, standfirst, then where the laser fits ---------- */
.page-laser .ld-intro__head { display: flex; flex-direction: column; align-items: flex-start; gap: 28px; }
.page-laser .ld-intro__body {
  display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: clamp(16px, 2vw, 32px); row-gap: 36px;
  margin-top: clamp(48px, 6vw, 96px);
}
.page-laser .ld-intro__lead { grid-column: 1 / span 7; margin: 0; color: var(--ink); text-indent: 3.2em; }
.page-laser .ld-intro__aside {
  grid-column: 9 / -1; align-self: end; max-width: 34ch; margin: 0; padding-top: 22px; border-top: 1px solid var(--line-strong);
  font-size: var(--fs-body); color: var(--muted);
}

/* Three uses of the laser, as a ruled table: when, what, and what it does. */
.page-laser .ld-uses { margin: clamp(56px, 7vw, 104px) 0 0; padding: 0; list-style: none; border-top: 1px solid var(--line-strong); }
.page-laser .ld-uses__row {
  position: relative; display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 4fr) minmax(0, 5fr); column-gap: clamp(20px, 2.6vw, 40px); row-gap: 8px;
  align-items: baseline; padding: clamp(24px, 2.6vw, 34px) 0; border-bottom: 1px solid var(--line);
}
.page-laser .ld-uses__row::before { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 1px; background: var(--sun-deep); transform: scaleX(0); transform-origin: left; transition: transform 1s var(--ease-out); }
.page-laser .ld-uses__row:hover::before { transform: scaleX(1); }
.page-laser .ld-uses__when { font-size: var(--fs-label); font-weight: 560; font-stretch: 118%; letter-spacing: .16em; line-height: 1.3; text-transform: uppercase; color: var(--sun-deep); }
.page-laser .ld-uses__name { font-family: var(--f-display); font-size: clamp(1.4rem, 2vw, 1.85rem); font-weight: 300; line-height: 1.12; letter-spacing: -.015em; color: var(--ink); text-wrap: balance; }
.page-laser .ld-uses__text { max-width: 46ch; color: var(--muted); }

/* ---------- 02 · Not all lasers are created equal ---------- */
.page-laser .ld-equal__head { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: clamp(16px, 2vw, 32px); row-gap: 28px; }
.page-laser .ld-equal__head .label { grid-column: 1 / -1; }
.page-laser .ld-equal__title {
  grid-column: 1 / span 10;
  font-family: var(--f-display); font-size: clamp(2.75rem, 6.4vw, 6.25rem); font-weight: 300; line-height: .95; letter-spacing: -.035em;
}
.page-laser .ld-equal__body {
  display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: clamp(16px, 2vw, 32px); row-gap: 48px;
  margin-top: clamp(48px, 6vw, 96px);
}
.page-laser .ld-equal__copy { grid-column: 1 / span 6; }
.page-laser .ld-equal__lead { margin-bottom: 1.1em; color: var(--ink); }
.page-laser .ld-equal__list { grid-column: 8 / -1; align-self: start; margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line-strong); }
.page-laser .ld-equal__list li { display: grid; grid-template-columns: 14px minmax(0, 1fr); column-gap: 14px; row-gap: 6px; padding: 20px 0 22px; border-bottom: 1px solid var(--line); }
.page-laser .ld-equal__list li::before { content: ""; grid-row: span 2; width: 7px; height: 7px; margin-top: .55em; border: 1px solid var(--sun-deep); border-radius: 50%; }
.page-laser .ld-equal__k { font-family: var(--f-display); font-size: 1.25rem; line-height: 1.25; color: var(--ink); }
.page-laser .ld-equal__v { font-size: .95rem; line-height: 1.5; color: var(--muted); }

/* ---------- 03 · LBR and LAPT beside the scan (ink) ---------- */
.page-laser .ld-lasers { overflow: clip; }
.page-laser .ld-lasers__grid {
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); column-gap: clamp(40px, 6vw, 104px); align-items: start;
}
.page-laser .ld-lasers__body { grid-column: 1; grid-row: 1; }
.page-laser .ld-scan { grid-column: 2; grid-row: 1; position: sticky; top: calc(var(--header-h) + 32px); margin: 0; }

.page-laser .ld-laser { display: flex; flex-direction: column; align-items: flex-start; gap: 28px; }
.page-laser .ld-laser + .ld-laser { margin-top: clamp(72px, 9vw, 144px); padding-top: clamp(56px, 6vw, 88px); border-top: 1px solid var(--line-ink); }
.page-laser .ld-laser__title { font-family: var(--f-display); font-size: clamp(2.3rem, 3.9vw, 3.75rem); font-weight: 300; line-height: 1; letter-spacing: -.028em; max-width: 12ch; }
.page-laser .ld-laser__abbr { color: var(--sun); }
.page-laser .ld-laser__lead { margin: 4px 0 0; color: var(--on-ink); }

/* The scan. Sized to the viewport so it always fits while pinned. */
.page-laser .ld-scan { --T: 8s; }
.page-laser .ld-scan__dial { position: relative; width: min(100%, calc(100svh - var(--header-h) - 180px)); min-width: min(100%, 420px); aspect-ratio: 1; margin-left: auto; }
.page-laser .ld-scan__svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.page-laser .ld-scan__field { fill: rgba(243, 239, 231, .025); stroke: var(--on-ink); stroke-width: 1; stroke-opacity: .26; vector-effect: non-scaling-stroke; }

/* The beam: the home page's x-ray light, a soft band with a bright leading edge, passing down the field once
   every --T (linear, so the dots below stay in step with it). */
.page-laser .ld-scan__sweep { position: absolute; inset: 6.25%; border-radius: 50%; overflow: hidden; pointer-events: none; }
.page-laser .ld-scan__sweep::after {
  content: ""; position: absolute; left: 0; right: 0; top: -30%; height: 30%; mix-blend-mode: screen;
  background: linear-gradient(180deg, transparent, rgba(224, 138, 94, .06) 50%, rgba(224, 138, 94, .24) 97%, rgba(255, 228, 210, .85) 100%);
  animation: ld-pass var(--T) linear infinite;
}
@keyframes ld-pass { 0% { transform: translateY(0); } 70%, 100% { transform: translateY(433.33%); } }

/* Bacteria: as the beam's edge reaches a dot (at 70% of --T times 1.3, scaled by its depth --y) its outline takes
   the laser colour and it fades away, then slowly returns before the next pass. */
.page-laser .ld-scan__dots circle {
  fill: var(--ink); stroke: var(--on-ink); stroke-width: 1; opacity: .55; vector-effect: non-scaling-stroke;
  animation: ld-hit var(--T) linear infinite; animation-delay: calc(var(--T) * (var(--y) * .5385 - 1));
}
.page-laser .ld-scan__dots circle.s { animation-name: ld-keep; }
@keyframes ld-hit {
  0% { opacity: .9; stroke: var(--sun); }
  16% { opacity: 0; stroke: var(--sun); }
  56% { opacity: 0; stroke: var(--on-ink); }
  88%, 100% { opacity: .55; stroke: var(--on-ink); }
}
@keyframes ld-keep {
  0% { opacity: .9; stroke: var(--sun); }
  22%, 100% { opacity: .55; stroke: var(--on-ink); }
}

/* LAPT: hatched patches of diseased tissue appear; the beam still passes, but only the patches are cleared.
   !important outranks the running animation without restarting it, so nothing falls out of step. */
.page-laser .ld-scan__zones path { fill: url(#ld-hatch); stroke: var(--sun); stroke-width: 1; stroke-opacity: .65; vector-effect: non-scaling-stroke; opacity: 0; transition: opacity .9s var(--ease-out); }
.page-laser .ld-scan pattern path { stroke: var(--sun); stroke-width: 1; stroke-opacity: .42; }
.page-laser .ld-scan[data-mode="lapt"] .ld-scan__zones path { opacity: 1; }
.page-laser .ld-scan[data-mode="lapt"] .ld-scan__dots circle:not(.z) { opacity: .3 !important; stroke: var(--on-ink) !important; }

.page-laser .ld-scan.is-paused .ld-scan__sweep::after,
.page-laser .ld-scan.is-paused .ld-scan__dots circle { animation-play-state: paused; }

/* Caption: the two views, and what the beam does in each. */
.page-laser .ld-scan__cap {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 14px 24px;
  width: min(100%, calc(100svh - var(--header-h) - 180px)); min-width: min(100%, 420px); margin: 22px 0 0 auto; padding-top: 16px; border-top: 1px solid var(--line-ink);
}
.page-laser .ld-scan__modes { display: none; gap: 6px; }
.js .page-laser .ld-scan__modes { display: inline-flex; }
.page-laser .ld-scan__mode {
  position: relative; min-width: 64px; min-height: 36px; padding: 0 14px; border: 1px solid var(--line-ink-strong); border-radius: 999px; background: transparent; cursor: pointer;
  font-size: var(--fs-label); font-weight: 600; font-stretch: 118%; letter-spacing: .16em; color: var(--on-ink-muted);
  transition: color .4s var(--ease-out), background-color .4s var(--ease-out), border-color .4s var(--ease-out);
}
.page-laser .ld-scan__mode:hover { color: var(--on-ink); border-color: var(--on-ink-muted); }
.page-laser .ld-scan__mode[aria-pressed="true"] { background: var(--porcelain); border-color: var(--porcelain); color: var(--ink); }
.page-laser .ld-scan__read { display: grid; font-family: var(--f-display); font-size: clamp(1.05rem, 1.3vw, 1.2rem); font-style: italic; font-weight: 300; line-height: 1.3; color: var(--on-ink-muted); text-align: right; }
.page-laser .ld-scan__read > span { grid-area: 1 / 1; display: inline-flex; align-items: center; justify-content: flex-end; gap: 10px; transition: opacity .6s var(--ease-out), transform .6s var(--ease-out); }
.page-laser .ld-scan__read > span::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--sun); }
.page-laser .ld-scan[data-mode="lbr"] [data-read="lapt"],
.page-laser .ld-scan[data-mode="lapt"] [data-read="lbr"] { opacity: 0; transform: translateY(6px); }

/* ---------- 05 · LANAP® ---------- */
.page-laser .ld-lanap__head { display: flex; flex-direction: column; align-items: flex-start; gap: 28px; margin-bottom: clamp(48px, 6vw, 96px); }
.page-laser .ld-lanap__title { font-family: var(--f-display); font-size: var(--fs-h2); font-weight: 300; line-height: 1.02; letter-spacing: -.035em; }
.page-laser .ld-lanap__title em { color: var(--ink-3); }
.page-laser .ld-lanap__title sup { font-size: .3em; vertical-align: .62em; margin-left: .03em; }
/* The "|" stays in the text; it is drawn as a laser hairline. */
.page-laser .ld-lanap__bar { position: relative; display: inline-block; width: .5em; color: transparent; }
.page-laser .ld-lanap__bar::before { content: ""; position: absolute; left: calc(50% - .5px); top: -.02em; bottom: .16em; width: 1px; background: var(--sun-deep); }
.page-laser .ld-lanap__grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(40px, 7vw, 120px); align-items: start; }
.page-laser .ld-lanap__lead { margin: 0 0 clamp(28px, 3vw, 44px); color: var(--ink); text-indent: 3.2em; }

.page-laser .ld-cert { position: sticky; top: calc(var(--header-h) + 32px); display: flex; flex-direction: column; align-items: flex-start; gap: 22px; padding: clamp(28px, 3.2vw, 48px); background: var(--enamel); }
.page-laser .ld-cert__kicker { margin: 0; font-size: var(--fs-label); font-weight: 560; font-stretch: 118%; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }
.page-laser .ld-cert__fig { display: inline-flex; align-items: flex-start; margin: 0 0 8px; color: var(--ink); }
.page-laser .ld-cert__approx { font-size: .55em; margin: .12em .06em 0 0; color: var(--sun-deep); }
.page-laser .ld-cert__copy p { color: var(--muted); }
.page-laser .ld-lanap__ledger { margin-top: clamp(36px, 4vw, 56px); max-width: 560px; }
.page-laser .ld-lanap__ledger .ledger__row { padding: 16px 0; grid-template-columns: 130px minmax(0, 1fr); }
.page-laser .ld-lanap__ledger dd { font-family: var(--f-display); font-size: 1.2rem; line-height: 1.3; }
.page-laser .ld-lanap__btn { margin-top: clamp(32px, 3.4vw, 48px); }

/* ---------- 06 · Visit by visit ---------- */
.page-laser .ld-steps__title { margin-top: 26px; max-width: 12ch; }

/* ---------- 07 · Who treats you, and cost ---------- */
.page-laser .ld-care__grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: clamp(16px, 2vw, 32px); row-gap: clamp(56px, 7vw, 96px); align-items: end; }
.page-laser .ld-care__col { grid-column: 1 / span 6; display: flex; flex-direction: column; align-items: flex-start; gap: 28px; }
.page-laser .ld-care__title { max-width: 14ch; }
.page-laser .ld-care__cost { grid-column: 8 / -1; gap: 0; padding-top: 28px; border-top: 1px solid var(--line-strong); }
.page-laser .ld-care__sub { margin-bottom: 22px; font-family: var(--f-display); font-size: var(--fs-h3); font-weight: 300; line-height: 1.1; letter-spacing: -.015em; }

/* ---------- 08 · FAQ ---------- */
.page-laser .ld-faq__title { margin-top: 26px; }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .page-laser .ld-intro__lead { grid-column: 1 / span 8; }
  .page-laser .ld-uses__row { grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); }
  .page-laser .ld-uses__when { grid-column: 1 / -1; }
  .page-laser .ld-lasers__grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .page-laser .ld-care__col { grid-column: 1 / span 7; }
}

@media (max-width: 900px) {
  .page-laser .ld-intro__body { row-gap: 36px; }
  .page-laser .ld-intro__lead, .page-laser .ld-intro__aside { grid-column: 1 / -1; }
  .page-laser .ld-intro__lead { text-indent: 0; }
  .page-laser .ld-intro__aside { max-width: 52ch; }
  .page-laser .ld-equal__title { grid-column: 1 / -1; }
  .page-laser .ld-equal__copy, .page-laser .ld-equal__list { grid-column: 1 / -1; }

  .page-laser .ld-lasers__grid { grid-template-columns: minmax(0, 1fr); row-gap: clamp(56px, 10vw, 88px); }
  .page-laser .ld-scan { position: static; grid-column: 1; grid-row: 1; }
  .page-laser .ld-lasers__body { grid-column: 1; grid-row: 2; }
  .page-laser .ld-scan__dial, .page-laser .ld-scan__cap { width: min(100%, 560px); min-width: 0; margin-inline: auto; }
  .page-laser .ld-laser__title { max-width: 16ch; }

  .page-laser .ld-lanap__grid { grid-template-columns: minmax(0, 1fr); }
  .page-laser .ld-cert { position: relative; top: auto; }
  .page-laser .ld-lanap__lead { text-indent: 0; }

  .page-laser .ld-care__col, .page-laser .ld-care__cost { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .page-laser .ld-equal__title { font-size: clamp(2.6rem, 12vw, 3.4rem); }
  .page-laser .ld-uses__row { grid-template-columns: minmax(0, 1fr); padding: 22px 0 24px; }

  .page-laser .ld-scan__cap { flex-direction: column; align-items: flex-start; }
  .page-laser .ld-scan__read { text-align: left; }
  .page-laser .ld-scan__read > span { justify-content: flex-start; }

  .page-laser .ld-lanap__title { font-size: clamp(2.8rem, 13.5vw, 4rem); }
  /* On a phone the title breaks after LANAP®: the hairline turns to lie between the two lines. */
  .page-laser .ld-lanap__bar { display: block; width: 44px; height: 1px; margin: 6px 0 20px; overflow: hidden; font-size: 0; background: var(--sun-deep); }
  .page-laser .ld-lanap__bar::before { content: none; }
  .page-laser .ld-cert { margin-inline: calc(var(--gutter) * -.5); }
  .page-laser .ld-lanap__ledger .ledger__row { grid-template-columns: 104px minmax(0, 1fr); gap: 12px; }
  .page-laser .ld-scan__dots circle { r: 5; }
}