/* ==========================================================================
   Legacy Signature Experience System — shared foundation
   Route-local stylesheet. Loaded only by pages that render a signature experience.
   Tokens are scoped to .ls-* so nothing here touches the locked global stylesheet.
   ========================================================================== */
.ls-explorer,.ls-chapters,.ls-facts,.ls-studio{
  --ls-navy:#14263a;--ls-ink:#1f2a3a;--ls-forest:#1c2f41;--ls-accent:#2d4e6d;--ls-sage:#8caac6;--ls-sage-soft:#dde3e9;
  --ls-cream:#f6f1e7;--ls-paper:#fbf8f2;--ls-cream-deep:#efe6d6;--ls-coral:#d78a7a;--ls-line:rgba(31,42,58,.14);
  --ls-serif:"DM Serif Display",Georgia,serif;--ls-sans:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
  --ls-ease:cubic-bezier(.2,.7,.2,1);--ls-fast:.22s;--ls-slow:.6s;
  font-family:var(--ls-sans);color:var(--ls-ink)
}
/* ---------- figure: scene parts and states ---------- */
.ls-scene{display:block;width:100%;height:auto;border-radius:12px}
.ls-scene .ls-outline{fill:none;stroke:#2b3442;stroke-width:1.2;stroke-opacity:.48;stroke-linejoin:round;vector-effect:non-scaling-stroke;transition:stroke var(--ls-fast) ease,stroke-opacity var(--ls-fast) ease,stroke-width var(--ls-fast) ease}
.ls-scene .ls-leader path,.ls-scene .ls-xlabel path{fill:none;stroke:var(--ls-ink);stroke-width:1;stroke-opacity:.45;vector-effect:non-scaling-stroke}
.ls-scene .ls-leader circle,.ls-scene .ls-xlabel circle{fill:#fff;stroke:var(--ls-ink);stroke-width:1.25;stroke-opacity:.7}
.ls-scene .ls-label,.ls-scene .ls-xlabel text{font:500 13px/1 var(--ls-sans);fill:var(--ls-ink);letter-spacing:.01em}
.ls-scene .ls-caption{font:700 10.5px/1 var(--ls-sans);letter-spacing:.16em;text-transform:uppercase;fill:rgba(31,42,58,.52)}
.ls-scene .ls-captions{transition:opacity var(--ls-fast) ease}
.ls-scene .ls-bone-web{opacity:.42}
.ls-scene .ls-gum-closed{display:none}
.ls-scene .ls-part--planned,.ls-scene .ls-part--cover{display:none}
.ls-scene .ls-integration{opacity:.6;transition:opacity var(--ls-slow) ease}
.ls-scene .ls-xlabels{display:none}
.ls-scene .ls-part{transition:opacity var(--ls-slow) var(--ls-ease),transform var(--ls-slow) var(--ls-ease),filter var(--ls-fast) ease}
.ls-scene .ls-annotations{transition:opacity var(--ls-fast) ease}
.ls-scene .ls-label,.ls-scene .ls-leader{transition:opacity var(--ls-fast) ease}
.ls-explorer.is-ready[data-mode="anatomy"] .ls-part[data-part]{cursor:pointer}
@media (hover:hover){.ls-explorer.is-ready[data-mode="anatomy"]:not([data-selected]) .ls-part[data-part]:hover{filter:drop-shadow(0 2px 8px rgba(48,107,166,.38))}.ls-explorer.is-ready[data-mode="anatomy"]:not([data-selected]) .ls-part[data-part]:hover .ls-outline{stroke:var(--ls-accent);stroke-opacity:1;stroke-width:1.8}}
/* selection: quieten everything else, lift the chosen structure with an accent outline */
.ls-explorer.is-ready[data-mode="anatomy"][data-selected] .ls-part[data-part]{opacity:.9;filter:saturate(.62)}
.ls-explorer.is-ready[data-mode="anatomy"][data-selected] .ls-part[data-part] .ls-part[data-part]{opacity:1}
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="enamel"] .ls-part[data-part="enamel"],
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="dentin"] .ls-part[data-part="dentin"],
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="pulp"] .ls-part[data-part="pulp"],
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="pdl"] .ls-part[data-part="pdl"],
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="gum"] .ls-part[data-part="gum"],
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="bone"] .ls-part[data-part="bone"],
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="crown"] .ls-part[data-part="crown"],
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="abutment"] .ls-part[data-part="abutment"],
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="screw"] .ls-part[data-part="screw"],
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="fixture"] .ls-part[data-part="fixture"]{opacity:1;filter:drop-shadow(0 2px 9px rgba(48,107,166,.55))}
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="enamel"] .ls-part[data-part="enamel"] .ls-outline,
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="dentin"] .ls-part[data-part="dentin"] .ls-outline,
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="pulp"] .ls-part[data-part="pulp"] .ls-outline,
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="gum"] .ls-part[data-part="gum"] .ls-outline,
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="bone"] .ls-part[data-part="bone"] .ls-outline,
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="crown"] .ls-part[data-part="crown"] .ls-outline,
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="abutment"] .ls-part[data-part="abutment"] .ls-outline,
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="screw"] .ls-part[data-part="screw"] .ls-outline,
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="fixture"] .ls-part[data-part="fixture"] .ls-outline{stroke:var(--ls-accent);stroke-opacity:1;stroke-width:1.8}
/* keep the tooth readable as a whole when one of its tissues is chosen */
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="enamel"] .ls-part[data-part="dentin"],
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="dentin"] .ls-part[data-part="enamel"],
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="dentin"] .ls-part[data-part="pulp"],
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="pulp"] .ls-part[data-part="dentin"]{opacity:.95;filter:saturate(.8)}
.ls-explorer.is-ready[data-mode="anatomy"][data-selected] .ls-label,.ls-explorer.is-ready[data-mode="anatomy"][data-selected] .ls-leader{opacity:.5}
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="enamel"] [data-label="enamel"],.ls-explorer.is-ready[data-mode="anatomy"][data-selected="enamel"] [data-leader="enamel"],
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="dentin"] [data-label="dentin"],.ls-explorer.is-ready[data-mode="anatomy"][data-selected="dentin"] [data-leader="dentin"],
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="pulp"] [data-label="pulp"],.ls-explorer.is-ready[data-mode="anatomy"][data-selected="pulp"] [data-leader="pulp"],
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="pdl"] [data-label="pdl"],.ls-explorer.is-ready[data-mode="anatomy"][data-selected="pdl"] [data-leader="pdl"],
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="gum"] [data-label="gum"],.ls-explorer.is-ready[data-mode="anatomy"][data-selected="gum"] [data-leader="gum"],
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="bone"] [data-label="bone"],.ls-explorer.is-ready[data-mode="anatomy"][data-selected="bone"] [data-leader="bone"],
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="crown"] [data-label="crown"],.ls-explorer.is-ready[data-mode="anatomy"][data-selected="crown"] [data-leader="crown"],
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="abutment"] [data-label="abutment"],.ls-explorer.is-ready[data-mode="anatomy"][data-selected="abutment"] [data-leader="abutment"],
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="screw"] [data-label="screw"],.ls-explorer.is-ready[data-mode="anatomy"][data-selected="screw"] [data-leader="screw"],
.ls-explorer.is-ready[data-mode="anatomy"][data-selected="fixture"] [data-label="fixture"],.ls-explorer.is-ready[data-mode="anatomy"][data-selected="fixture"] [data-leader="fixture"]{opacity:1;font-weight:600}
/* layers */
.ls-explorer[data-layer-gum="off"] .ls-part--gum,.ls-explorer[data-layer-bone="off"] .ls-part--bone,
.ls-explorer[data-layer-tooth="off"] .ls-group--tooth,.ls-explorer[data-layer-tooth="off"] .ls-part--pdl,
.ls-explorer[data-layer-restoration="off"] .ls-part--crown,.ls-explorer[data-layer-restoration="off"] .ls-part--abutment,.ls-explorer[data-layer-restoration="off"] .ls-part--screw,
.ls-explorer[data-layer-fixture="off"] .ls-part--fixture{opacity:.07}
.ls-explorer[data-mode="layers"] .ls-annotations,.ls-explorer[data-mode="exploded"] .ls-annotations,.ls-explorer[data-mode="journey"] .ls-annotations,.ls-explorer[data-mode="compare"] .ls-annotations{opacity:0}
/* exploded: driven by --ls-explode (0–1); parts lift, cast a soft shadow and carry their own labels */
.ls-explorer[data-mode="exploded"] .ls-part--crown,.ls-explorer[data-mode="exploded"] .ls-xlabel--crown{transform:translateY(calc(var(--ls-explode,0) * -118px))}
.ls-explorer[data-mode="exploded"] .ls-part--screw,.ls-explorer[data-mode="exploded"] .ls-xlabel--screw{transform:translateY(calc(var(--ls-explode,0) * -84px))}
.ls-explorer[data-mode="exploded"] .ls-part--abutment,.ls-explorer[data-mode="exploded"] .ls-xlabel--abutment{transform:translateY(calc(var(--ls-explode,0) * -58px))}
.ls-explorer[data-mode="exploded"] .ls-part--crown,.ls-explorer[data-mode="exploded"] .ls-part--screw,.ls-explorer[data-mode="exploded"] .ls-part--abutment{filter:drop-shadow(0 calc(var(--ls-explode,0) * 12px) calc(var(--ls-explode,0) * 8px) rgba(20,38,58,.22))}
.ls-explorer[data-mode="exploded"] .ls-group--tooth,.ls-explorer[data-mode="exploded"] .ls-part--pdl{opacity:.5;filter:saturate(.3)}
.ls-explorer[data-mode="exploded"] .ls-xlabels{display:block;opacity:var(--ls-explode,0)}
.ls-explorer[data-mode="exploded"] .ls-xlabel{transition:transform var(--ls-slow) var(--ls-ease)}
.ls-explorer[data-mode="exploded"] .ls-captions{opacity:0}
/* journey stages */
.ls-explorer[data-stage="plan"] .ls-part--crown,.ls-explorer[data-stage="plan"] .ls-part--abutment,.ls-explorer[data-stage="plan"] .ls-part--screw,.ls-explorer[data-stage="plan"] .ls-part--fixture,
.ls-explorer[data-stage="place"] .ls-part--crown,.ls-explorer[data-stage="place"] .ls-part--abutment,.ls-explorer[data-stage="place"] .ls-part--screw,
.ls-explorer[data-stage="heal"] .ls-part--crown,.ls-explorer[data-stage="heal"] .ls-part--abutment,.ls-explorer[data-stage="heal"] .ls-part--screw{opacity:0}
.ls-explorer[data-stage="plan"] .ls-part--planned{display:block}
.ls-explorer[data-stage="place"] .ls-part--cover{display:block}
.ls-scene .ls-part--site,.ls-scene .ls-part--healing,.ls-scene .ls-part--care-cue{display:none}
.ls-explorer[data-stage="place"] .ls-part--site,.ls-explorer[data-stage="heal"] .ls-part--healing,.ls-explorer[data-stage="care"] .ls-part--care-cue{display:block}
.ls-explorer[data-stage="heal"] .ls-newbone{animation:ls-newbone 3.2s var(--ls-ease) infinite alternate}
@keyframes ls-newbone{from{opacity:.55}to{opacity:1}}
@media (prefers-reduced-motion:reduce){.ls-explorer[data-stage="heal"] .ls-newbone{animation:none}}
.ls-explorer[data-stage="plan"] .ls-gum-open,.ls-explorer[data-stage="place"] .ls-gum-open,.ls-explorer[data-stage="heal"] .ls-gum-open{display:none}
.ls-explorer[data-stage="plan"] .ls-gum-closed,.ls-explorer[data-stage="place"] .ls-gum-closed,.ls-explorer[data-stage="heal"] .ls-gum-closed{display:block}
.ls-explorer[data-stage="plan"] .ls-integration,.ls-explorer[data-stage="place"] .ls-integration{opacity:0}
.ls-explorer[data-stage="heal"] .ls-integration{opacity:1;animation:ls-pulse 2.8s var(--ls-ease) infinite}
.ls-explorer[data-stage="care"] .ls-part--gum,.ls-explorer[data-stage="care"] .ls-part--crown{filter:drop-shadow(0 0 6px rgba(47,107,79,.5))}
.ls-explorer[data-stage] .ls-group--tooth,.ls-explorer[data-stage] .ls-part--pdl{opacity:.6;filter:saturate(.35)}
@keyframes ls-pulse{0%,100%{opacity:.4}50%{opacity:1}}
/* compare */
.ls-explorer[data-compare] .ls-part[data-part]{opacity:.8;filter:saturate(.42)}
.ls-explorer[data-compare] .ls-part[data-part] .ls-part[data-part]{opacity:1}
.ls-explorer[data-compare="support"] .ls-part--pdl,.ls-explorer[data-compare="support"] .ls-part--fixture,
.ls-explorer[data-compare="surface"] .ls-part--enamel,.ls-explorer[data-compare="surface"] .ls-part--dentin,.ls-explorer[data-compare="surface"] .ls-part--crown,
.ls-explorer[data-compare="foundation"] .ls-part--bone{opacity:1;filter:drop-shadow(0 0 5px rgba(47,107,79,.5))}
.ls-explorer[data-compare="support"] .ls-part--pdl .ls-outline,.ls-explorer[data-compare="support"] .ls-part--fixture .ls-outline,
.ls-explorer[data-compare="surface"] .ls-part--enamel .ls-outline,.ls-explorer[data-compare="surface"] .ls-part--crown .ls-outline,
.ls-explorer[data-compare="foundation"] .ls-part--bone .ls-outline{stroke:var(--ls-accent);stroke-opacity:1;stroke-width:1.8}
.ls-explorer[data-compare="support"] .ls-group--tooth,.ls-explorer[data-compare="surface"] .ls-group--tooth{opacity:1}
.ls-explorer[data-compare="support"] .ls-part--dentin,.ls-explorer[data-compare="support"] .ls-part--enamel,.ls-explorer[data-compare="support"] .ls-part--pulp,
.ls-explorer[data-compare="surface"] .ls-part--pulp{opacity:.6;filter:saturate(.3)}
/* reduced motion */
@media (prefers-reduced-motion:reduce){.ls-scene .ls-part,.ls-scene .ls-annotations,.ls-scene .ls-xlabel,.ls-scene .ls-integration,.ls-scene .ls-captions{transition:none}.ls-explorer[data-stage="heal"] .ls-integration{animation:none;opacity:.9}}
@media (max-width:720px){
  .ls-modes{flex-wrap:wrap;border-radius:16px}.ls-modes [role="tab"]{flex:1 1 30%;text-align:center;padding:0 12px}
  .ls-scene .ls-label,.ls-scene .ls-leader path,.ls-scene .ls-xlabel text,.ls-scene .ls-xlabel path{display:none}
  .ls-scene .ls-leader circle,.ls-scene .ls-xlabel circle{display:none}
  .ls-scene .ls-caption{font-size:15px;letter-spacing:.1em}
  .ls-explorer.is-ready[data-mode="anatomy"][data-selected="enamel"] [data-leader="enamel"] circle,.ls-explorer.is-ready[data-mode="anatomy"][data-selected="dentin"] [data-leader="dentin"] circle,
  .ls-explorer.is-ready[data-mode="anatomy"][data-selected="pulp"] [data-leader="pulp"] circle,.ls-explorer.is-ready[data-mode="anatomy"][data-selected="pdl"] [data-leader="pdl"] circle,
  .ls-explorer.is-ready[data-mode="anatomy"][data-selected="gum"] [data-leader="gum"] circle,.ls-explorer.is-ready[data-mode="anatomy"][data-selected="bone"] [data-leader="bone"] circle,
  .ls-explorer.is-ready[data-mode="anatomy"][data-selected="crown"] [data-leader="crown"] circle,.ls-explorer.is-ready[data-mode="anatomy"][data-selected="abutment"] [data-leader="abutment"] circle,
  .ls-explorer.is-ready[data-mode="anatomy"][data-selected="screw"] [data-leader="screw"] circle,.ls-explorer.is-ready[data-mode="anatomy"][data-selected="fixture"] [data-leader="fixture"] circle{display:block;r:9;fill:rgba(255,255,255,.85);stroke:var(--ls-accent);stroke-width:3;stroke-opacity:1}
}

/* ---------- controls ---------- */
.ls-modes-slot{min-height:52px;display:flex;align-items:center}
.ls-modes{display:flex;gap:4px;padding:4px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:999px;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.ls-modes::-webkit-scrollbar{display:none}
.ls-modes [role="tab"]{flex:0 0 auto;appearance:none;border:0;background:transparent;color:rgba(255,255,255,.78);font:600 13px/1 var(--ls-sans);letter-spacing:.01em;padding:0 16px;min-height:44px;border-radius:999px;cursor:pointer;white-space:nowrap;transition:background var(--ls-fast) ease,color var(--ls-fast) ease}
.ls-modes [role="tab"]:hover{color:#fff;background:rgba(255,255,255,.08)}
.ls-modes [role="tab"][aria-selected="true"]{background:var(--ls-cream);color:var(--ls-navy);box-shadow:0 3px 10px rgba(3,17,31,.22),inset 0 1px 0 #fff}
.ls-modes [role="tab"]:focus-visible{outline:2px solid #fff;outline-offset:2px}
.ls-chips{display:flex;flex-wrap:wrap;gap:8px}
.ls-chips button{appearance:none;border:1px solid var(--ls-line);background:#fff;color:var(--ls-ink);font:500 14px/1.1 var(--ls-sans);padding:10px 14px;min-height:44px;border-radius:12px;cursor:pointer;text-align:left;transition:border-color var(--ls-fast) ease,background var(--ls-fast) ease,color var(--ls-fast) ease,transform var(--ls-fast) ease}
.ls-chips button:hover{border-color:var(--ls-accent);transform:translateY(-1px)}
.ls-chips button[aria-pressed="true"]{background:var(--ls-accent);border-color:var(--ls-accent);color:#fff;box-shadow:0 5px 12px -7px rgba(25,67,110,.55),inset 0 1px 0 rgba(255,255,255,.22)}
.ls-chips button:focus-visible{outline:2px solid var(--ls-accent);outline-offset:2px}
.ls-chip-group{margin:0 0 14px}
.ls-group-label{margin:0 0 6px;font:700 11px/1 var(--ls-sans);letter-spacing:.14em;text-transform:uppercase;color:rgba(31,42,58,.6)}
.ls-switches{display:grid;gap:8px}
.ls-switch{display:flex;align-items:center;gap:12px;min-height:44px;padding:6px 12px;border:1px solid var(--ls-line);border-radius:12px;background:#fff;cursor:pointer;font:500 14px/1.2 var(--ls-sans)}
.ls-switch input{appearance:none;width:40px;height:22px;border-radius:999px;background:#cfd6d0;position:relative;transition:background var(--ls-fast) ease;flex:0 0 auto;margin:0;cursor:pointer}
.ls-switch input::after{content:"";position:absolute;top:3px;left:3px;width:16px;height:16px;border-radius:50%;background:#fff;transition:transform var(--ls-fast) var(--ls-ease);box-shadow:0 1px 2px rgba(0,0,0,.25)}
.ls-switch input:checked{background:var(--ls-accent)}
.ls-switch input:checked::after{transform:translateX(18px)}
.ls-switch input:focus-visible{outline:2px solid var(--ls-accent);outline-offset:2px}
.ls-range{display:grid;gap:8px;font:600 13px/1.2 var(--ls-sans)}
.ls-range input[type="range"]{width:100%;height:44px;margin:0;accent-color:var(--ls-accent);cursor:pointer}
.ls-inline-actions{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0 16px}
.ls-ghost{appearance:none;border:1px solid var(--ls-line);background:#fff;color:var(--ls-ink);font:600 13px/1 var(--ls-sans);padding:0 14px;min-height:44px;border-radius:999px;cursor:pointer}
.ls-ghost:hover{border-color:var(--ls-accent);color:var(--ls-accent)}
.ls-ghost:focus-visible{outline:2px solid var(--ls-accent);outline-offset:2px}
.ls-steps{list-style:none;margin:0 0 14px;padding:0;display:grid;gap:6px}
.ls-steps button{appearance:none;width:100%;display:flex;align-items:center;gap:12px;border:1px solid var(--ls-line);background:#fff;color:var(--ls-ink);font:500 14px/1.2 var(--ls-sans);padding:10px 12px;min-height:44px;border-radius:12px;cursor:pointer;text-align:left;transition:border-color var(--ls-fast) ease,background var(--ls-fast) ease}
.ls-steps button:hover{border-color:var(--ls-accent)}
.ls-steps button[aria-current="step"]{background:var(--ls-navy);border-color:var(--ls-navy);color:#fff;box-shadow:inset 3px 0 0 #82add6,0 5px 12px -8px rgba(20,38,58,.5)}
.ls-steps button:focus-visible{outline:2px solid var(--ls-accent);outline-offset:2px}
.ls-step-n{font:400 15px/1 var(--ls-serif);opacity:.7;min-width:22px}
.ls-journey-strip{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:10px;color:rgba(255,255,255,.85);font:500 13px/1.2 var(--ls-sans)}
.ls-journey-strip button{appearance:none;border:1px solid rgba(255,255,255,.3);background:transparent;color:#fff;width:44px;height:44px;border-radius:50%;cursor:pointer;font-size:18px}
.ls-journey-strip button:hover{background:rgba(255,255,255,.12)}
.ls-journey-strip button:focus-visible{outline:2px solid #fff;outline-offset:2px}
.ls-journey-strip p{margin:0}
/* ---------- notes ---------- */
.ls-notes article{display:none}
.ls-notes article.is-active{display:block;animation:ls-note-enter .36s var(--ls-ease) both}
@keyframes ls-note-enter{from{opacity:.55;transform:translateY(7px)}to{opacity:1;transform:translateY(0)}}
.ls-explorer:not(.is-ready) .ls-notes article{display:block;padding:12px 0;border-top:1px solid var(--ls-line)}
.ls-notes h2,.ls-notes h3{margin:0 0 6px;font:400 24px/1.1 var(--ls-serif);letter-spacing:-.02em;color:var(--ls-navy)}
.ls-notes p{margin:0 0 8px;font:400 15px/1.55 var(--ls-sans);color:var(--ls-ink)}
.ls-note-kicker{font:700 11px/1 var(--ls-sans);letter-spacing:.14em;text-transform:uppercase;color:var(--ls-accent);margin:0 0 8px}
.ls-note-summary{font-weight:600}
.ls-ask{margin-top:12px;padding:12px 14px;border-left:3px solid var(--ls-accent);background:rgba(47,107,79,.07);border-radius:0 10px 10px 0;font-style:italic}
.ls-ask span{display:block;font:700 11px/1 var(--ls-sans);letter-spacing:.14em;text-transform:uppercase;color:var(--ls-accent);margin-bottom:6px;font-style:normal}
.ls-compare-grid{display:grid;gap:12px}
.ls-compare-grid>div{padding:12px 14px;border:1px solid var(--ls-line);border-radius:12px;background:#fff}
.ls-ordered{margin:0 0 10px;padding-left:20px;font:400 14px/1.5 var(--ls-sans)}
.ls-ordered b{font-weight:600}
.ls-panel-hint{margin:0 0 14px;font:400 15px/1.5 var(--ls-sans);color:rgba(31,42,58,.8)}
.ls-panel-copy{margin:14px 0 0;font:400 14px/1.55 var(--ls-sans)}
.ls-muted{color:rgba(31,42,58,.62)}
.ls-live{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
/* ---------- figure chrome ---------- */
.ls-figure{--ls-mode-accent:#477db7;position:relative;margin:0;background:linear-gradient(145deg,#fffdfa 0%,var(--ls-cream) 58%,#e9eef1 100%);border:1px solid rgba(255,255,255,.7);border-radius:20px;padding:14px 14px 12px;box-shadow:0 34px 66px -32px rgba(3,17,31,.66),0 12px 26px -18px rgba(3,17,31,.32);isolation:isolate;transition:box-shadow .45s var(--ls-ease),border-color .45s var(--ls-ease)}
.ls-explorer[data-mode="layers"] .ls-figure,.ls-explorer[data-mode="shape"] .ls-figure{--ls-mode-accent:#5b8ead}
.ls-explorer[data-mode="exploded"] .ls-figure,.ls-explorer[data-mode="alignment"] .ls-figure{--ls-mode-accent:#32649f}
.ls-explorer[data-mode="journey"] .ls-figure,.ls-explorer[data-mode="shade"] .ls-figure{--ls-mode-accent:#6a93bf}
.ls-figure::before{content:"";position:absolute;z-index:2;top:0;left:26px;width:clamp(64px,18%,128px);height:3px;border-radius:0 0 8px 8px;background:var(--ls-mode-accent);box-shadow:0 3px 16px rgba(48,107,166,.27);transition:background .45s ease,width .45s var(--ls-ease);pointer-events:none}
.ls-figure-canvas{position:relative}
.ls-figure-canvas::after{content:"";position:absolute;inset:9px;border:1px solid rgba(40,79,117,.12);border-radius:10px;pointer-events:none;box-shadow:inset 0 0 34px rgba(39,74,113,.045)}
.ls-figure-caption{margin:10px 2px 0;padding-top:10px;border-top:1px solid rgba(40,79,117,.13);font:400 12px/1.4 var(--ls-sans);color:rgba(31,42,58,.68)}
.ls-figure-caption span{font-weight:700;color:var(--ls-ink)}
/* A selected landmark stays legible while the surrounding diagram recedes. */
.ls-explorer.is-ready[data-mode="anatomy"][data-selected] .ls-leader{transition:opacity var(--ls-fast) ease}
.ls-explorer.is-ready[data-mode="anatomy"][data-selected] .ls-leader path{transition:stroke var(--ls-fast) ease,stroke-opacity var(--ls-fast) ease}
@media (prefers-reduced-motion:reduce){.ls-notes article.is-active{animation:none}.ls-figure,.ls-figure::before,.ls-scene .ls-label,.ls-scene .ls-leader,.ls-explorer.is-ready[data-mode="anatomy"][data-selected] .ls-leader path{transition:none}}
/* ---------- shared typography bits ---------- */
.ls-eyebrow{margin:0 0 14px;font:700 11px/1 var(--ls-sans);letter-spacing:.16em;text-transform:uppercase}
.ls-deck{font:400 17px/1.6 var(--ls-sans);max-width:46ch}
.ls-button{display:inline-flex;align-items:center;gap:10px;min-height:48px;padding:0 22px;border-radius:999px;background:var(--ls-cream);color:var(--ls-navy);font:600 15px/1 var(--ls-sans);text-decoration:none;transition:transform var(--ls-fast) ease,background var(--ls-fast) ease}
.ls-button:hover{transform:translateY(-1px);background:#fff}
.ls-button:focus-visible{outline:2px solid #fff;outline-offset:3px}
.ls-phone{display:inline-flex;align-items:center;min-height:48px;padding:0 6px;color:#fff;font:600 15px/1 var(--ls-sans);text-decoration:underline;text-underline-offset:4px}
.ls-actions{display:flex;flex-wrap:wrap;gap:12px 18px;align-items:center;margin:22px 0 18px}
.ls-signature-mark{margin:0;font:400 14px/1.3 var(--ls-serif);font-style:italic;color:rgba(255,255,255,.7)}
.ls-signature-mark span{display:block;font:700 10px/1 var(--ls-sans);letter-spacing:.16em;text-transform:uppercase;font-style:normal;margin-bottom:6px;color:rgba(255,255,255,.55)}
.ls-disclosure{margin:0;font:400 12.5px/1.5 var(--ls-sans);color:rgba(255,255,255,.62);max-width:88ch}
.ls-explorer .ls-static-note,.ls-studio .ls-static-note{margin:0;font:400 13px/1.4 var(--ls-sans);color:rgba(255,255,255,.8)}

/* Tablet compositions keep the diagrams prominent without letting square scenes dominate the page. */
@media (min-width:721px) and (max-width:1100px){
  .ls-explorer .ls-stage,.ls-studio--restorative .ls-stage,
  .ls-explorer .ls-panel,.ls-studio--restorative .ls-panel{width:min(100%,760px);margin-inline:auto}
}

/* ==========================================================================
   Smile scene (shared by Smile Atelier and Invisalign Journey) — states
   Roots carry .ls-explorer--smile plus an experience class for composition.
   ========================================================================== */
.ls-explorer--smile{--sm-cervical:#dfcca6;--sm-body:#f6f1e3;--sm-incisal:#e2e7e8;--sm-translucency:.4;--sm-stain:0;--sm-dentin:#dcc38f}
.ls-scene--smile{border-radius:12px}
.ls-scene--smile .sm-stop-cervical{stop-color:var(--sm-cervical)}
.ls-scene--smile .sm-stop-body{stop-color:var(--sm-body)}
.ls-scene--smile .sm-stop-incisal{stop-color:var(--sm-incisal)}
.ls-scene--smile stop{transition:stop-color var(--ls-slow) ease}
.ls-scene--smile .sm-body{display:none}
.ls-explorer--smile:not([data-edge]) .sm-edge--natural,.ls-explorer--smile[data-edge="natural"] .sm-edge--natural,.ls-explorer--smile[data-edge="rounded"] .sm-edge--rounded,.ls-explorer--smile[data-edge="squared"] .sm-edge--squared,.ls-explorer--smile[data-edge="tapered"] .sm-edge--tapered{display:block}
.ls-explorer--smile[data-chip="on"] [data-sm-tooth="4"] .sm-body{display:none}
.ls-explorer--smile[data-chip="on"] [data-sm-tooth="4"] .sm-edge--chipped{display:block}
.ls-scene--smile .sm-bonding{display:none;fill:#efe7d4;stroke:#2d4e6d;stroke-width:.9;vector-effect:non-scaling-stroke}
.ls-explorer--smile[data-chip="on"][data-bonding="on"] .sm-bonding{display:block}
.ls-scene--smile .sm-translucency{opacity:var(--sm-translucency,.4);transition:opacity var(--ls-slow) ease}
.ls-scene--smile .sm-stain{opacity:var(--sm-stain,0);transition:opacity var(--ls-slow) ease}
.ls-scene--smile .sm-stain--edge{opacity:calc(var(--sm-stain,0) * .45)}
.ls-scene--smile .sm-restoration{display:none}
.ls-explorer--smile[data-restoration="on"] .sm-restoration{display:block}
.ls-scene--smile .sm-veneer{opacity:0;transition:opacity var(--ls-fast) ease}
.ls-explorer--smile[data-veneer="on"] .sm-veneer{opacity:1}
.ls-scene--smile .sm-outline{fill:none;stroke:#2b3442;stroke-opacity:.55;stroke-width:.9;vector-effect:non-scaling-stroke}
.ls-scene--smile .sm-tooth-move{transform:translate(calc(var(--sm-dx,0) * 1px),calc(var(--sm-dy,0) * 1px)) rotate(calc(var(--sm-rot,0) * 1deg)) scaleY(var(--sm-sy,1));transform-box:fill-box;transform-origin:50% 0;transition:transform var(--ls-slow) var(--ls-ease)}
.ls-scene--smile .sm-aligner{opacity:0;transition:opacity var(--ls-slow) ease}
.ls-explorer--smile[data-aligner="on"] .sm-aligner{opacity:1}
.ls-scene--smile .sm-guide{opacity:0;transition:opacity var(--ls-fast) ease}
.ls-explorer--smile[data-mode="shape"] .sm-guide--proportion,.ls-explorer--smile[data-mode="alignment"] .sm-guide--midline{opacity:1}
.ls-scene--smile .sm-inset{opacity:0;transition:opacity var(--ls-fast) ease;pointer-events:none}
.ls-explorer--smile[data-mode="shade"] .sm-inset--shade{opacity:1}
.ls-scene--smile .sm-inset-title{font:700 9px/1 var(--ls-sans);letter-spacing:.14em;fill:rgba(31,42,58,.6)}
.ls-scene--smile .sm-inset-label{font:600 11px/1 var(--ls-sans);fill:#1f2a3a}
.ls-scene--smile .sm-inset-sub{font:400 9.5px/1 var(--ls-sans);fill:rgba(31,42,58,.62)}
.ls-scene--smile .sm-inset-dentin{fill:var(--sm-dentin);transition:fill var(--ls-slow) ease}
.ls-scene--smile .sm-ann{opacity:0;transition:opacity var(--ls-fast) ease}
.ls-scene--smile .sm-ann path{fill:none;stroke:#edf1f4;stroke-opacity:.5;stroke-width:1;vector-effect:non-scaling-stroke}
.ls-scene--smile .sm-ann circle{fill:#fff;stroke:#1f2a3a;stroke-width:1;transition:r var(--ls-fast) ease}
.ls-scene--smile .sm-ann text{font:500 12px/1 var(--ls-sans);fill:#edf1f4;letter-spacing:.01em;paint-order:stroke;stroke:rgba(13,33,36,.72);stroke-width:3px;stroke-linejoin:round}
.ls-explorer--smile[data-mode="shade"] .sm-ann--shade,.ls-explorer--smile[data-mode="shape"] .sm-ann--shape,.ls-explorer--smile[data-mode="alignment"] .sm-ann--alignment{opacity:1}
.ls-explorer--smile .sm-ann[data-ann-demo="stain"],.ls-explorer--smile .sm-ann[data-ann-demo="restoration"],.ls-explorer--smile .sm-ann[data-ann-demo="chip"],.ls-explorer--smile .sm-ann[data-ann-demo="veneer"],.ls-explorer--smile .sm-ann[data-ann-demo="aligner"]{opacity:0}
.ls-explorer--smile[data-mode="shade"][data-stain="on"] .sm-ann[data-ann-demo="stain"],.ls-explorer--smile[data-mode="shade"][data-restoration="on"] .sm-ann[data-ann-demo="restoration"],.ls-explorer--smile[data-mode="shape"][data-chip="on"] .sm-ann[data-ann-demo="chip"],.ls-explorer--smile[data-mode="shape"][data-veneer="on"] .sm-ann[data-ann-demo="veneer"],.ls-explorer--smile[data-mode="alignment"][data-aligner="on"] .sm-ann[data-ann-demo="aligner"]{opacity:1}
.ls-explorer--smile[data-topic="translucency"] [data-ann="translucency"] text,.ls-explorer--smile[data-topic="dentin"] [data-ann="body"] text,.ls-explorer--smile[data-topic="stain"] [data-ann="stain"] text,.ls-explorer--smile[data-topic="restoration"] [data-ann="restoration"] text,.ls-explorer--smile[data-topic="edge"] [data-ann="edge"] text,.ls-explorer--smile[data-topic="proportion"] [data-ann="proportion"] text,.ls-explorer--smile[data-topic="chip"] [data-ann="chip"] text,.ls-explorer--smile[data-topic="veneer"] [data-ann="veneer"] text,.ls-explorer--smile[data-topic="spacing"] [data-ann="embrasure"] text,.ls-explorer--smile[data-topic="crowding"] [data-ann="position"] text,.ls-explorer--smile[data-topic="gaps"] [data-ann="midline"] text,.ls-explorer--smile[data-topic="rotation"] [data-ann="position"] text,.ls-explorer--smile[data-topic="aligners"] [data-ann="aligner"] text{font-weight:700;fill:#fff}
.ls-scene--smile .sm-caption{font:700 9.5px/1 var(--ls-sans);letter-spacing:.18em;fill:rgba(238,243,239,.55)}
@media (prefers-reduced-motion:reduce){.ls-scene--smile stop,.ls-scene--smile .sm-translucency,.ls-scene--smile .sm-stain,.ls-scene--smile .sm-tooth-move,.ls-scene--smile .sm-aligner,.ls-scene--smile .sm-veneer,.ls-scene--smile .sm-ann,.ls-scene--smile .sm-inset,.ls-scene--smile .sm-guide{transition:none}}
@media (max-width:720px){.ls-scene--smile .sm-ann text,.ls-scene--smile .sm-ann path{display:none}.ls-scene--smile .sm-ann circle{r:5}.ls-scene--smile .sm-inset{display:none}.ls-scene--smile .sm-caption{font-size:13px;letter-spacing:.12em}}
.ls-scene--smile .sm-ghost{opacity:0;transition:opacity var(--ls-fast) ease}
.ls-scene--smile .sm-ghost path{fill:none;stroke:#9dbdda;stroke-width:1.4;stroke-dasharray:4 3;vector-effect:non-scaling-stroke}
.ls-explorer--smile[data-ghost="on"] .sm-ghost{opacity:1}
.ls-scene--smile .sm-attachment{opacity:0;transition:opacity var(--ls-fast) ease}
.ls-explorer--smile[data-attachments="on"] .sm-attachment{opacity:1}
.ls-scene--smile .sm-scan{opacity:0;transition:opacity var(--ls-fast) ease}
.ls-explorer--smile[data-scan="on"] .sm-scan{opacity:1}
.ls-explorer--smile[data-retainer="on"] .sm-aligner{opacity:.55}
.ls-explorer--smile[data-mode="anatomy"] .sm-inset--tray{opacity:1}
.ls-explorer--smile[data-mode="anatomy"] .sm-ann--aligner{opacity:1}
.ls-explorer--smile[data-mode="anatomy"][data-attachments="off"] .sm-ann[data-ann="attachment"]{opacity:0}
.ls-explorer--smile[data-mode="positions"] .sm-ann--alignment{opacity:1}
.ls-explorer--smile[data-mode="journey"][data-stage="records"] .sm-ann[data-ann-stage="records"],.ls-explorer--smile[data-mode="journey"][data-stage="plan"] .sm-ann[data-ann-stage="plan"],.ls-explorer--smile[data-mode="journey"][data-stage="series"] .sm-ann[data-ann-stage="series"],.ls-explorer--smile[data-mode="journey"][data-stage="wear"] .sm-ann[data-ann-stage="wear"],.ls-explorer--smile[data-mode="journey"][data-stage="monitor"] .sm-ann[data-ann-stage="monitor"],.ls-explorer--smile[data-mode="journey"][data-stage="retention"] .sm-ann[data-ann-stage="retention"]{opacity:1}
.ls-explorer--smile[data-mode="journey"] .sm-guide--midline{opacity:0}
.ls-explorer--smile[data-topic="shell"] [data-ann="shell"] text,.ls-explorer--smile[data-topic="trim"] [data-ann="trim"] text,.ls-explorer--smile[data-topic="attachments"] [data-ann="attachment"] text,.ls-explorer--smile[data-topic="pressure"] [data-ann="pressure"] text,.ls-explorer--smile[data-topic="care"] [data-ann="smoothedge"] text{font-weight:700;fill:#fff}
.ls-scene--smile .sm-shield{opacity:0;transition:opacity var(--ls-fast) ease}
.ls-explorer--smile[data-shield="on"] .sm-shield{opacity:1}
.ls-explorer--smile[data-gel="on"] .sm-aligner{opacity:1}
.ls-explorer--smile[data-gel="on"] .sm-aligner path:first-child{fill:rgba(214,238,246,.5)}
.ls-explorer--smile[data-mode="journey"][data-stage="assess"] .sm-ann[data-ann-stage="assess"],.ls-explorer--smile[data-mode="journey"][data-stage="prepare"] .sm-ann[data-ann-stage="prepare"],.ls-explorer--smile[data-mode="journey"][data-stage="whiten"] .sm-ann[data-ann-stage="whiten"],.ls-explorer--smile[data-mode="journey"][data-stage="maintain"] .sm-ann[data-ann-stage="maintain"]{opacity:1}
.ls-explorer--smile[data-mode="options"] .sm-ann[data-ann="w-gel"]{opacity:1}

/* Journey arrows expose their beginning and end instead of appearing broken. */
.ls-journey-strip button:disabled{opacity:.42;cursor:default;border-color:rgba(255,255,255,.22)}
.ls-journey-strip button:disabled:hover{background:transparent}