/* ==========================================================================
   LUMIÈRE DENTAL — premium single-page site
   Palette: obsidian / porcelain / gold / clay
   ========================================================================== */
:root{
  --obsidian:#0a1519;
  --obsidian-2:#0f2027;
  --porcelain:#f6f2ea;
  --porcelain-2:#ebe4d8;
  --gold:#c9a227;
  --gold-2:#e0c46a;
  --clay:#a85c3e;
  --sage:#7ba39a;
  --ink-muted:rgba(10,21,25,.56);
  --light-muted:rgba(246,242,234,.54);
  --hair:rgba(246,242,234,.13);
  --hair-d:rgba(10,21,25,.14);

  --display:"Fraunces",Georgia,"Times New Roman",serif;
  --sans:"Inter",-apple-system,BlinkMacSystemFont,system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,monospace;

  --e:cubic-bezier(.22,1,.36,1);
  --e-io:cubic-bezier(.65,0,.35,1);
  --gut:clamp(1.15rem,5vw,4.5rem);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--obsidian);color:var(--porcelain);
  font-family:var(--sans);font-size:16px;line-height:1.6;
  overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
body.lock{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;cursor:pointer;background:none;border:0}
h1,h2,h3,h4{font-family:var(--display);font-weight:300;letter-spacing:-.03em;line-height:.94;margin:0}
p{margin:0}
::selection{background:var(--gold);color:var(--obsidian)}

.mono{font-family:var(--mono);font-size:.6rem;letter-spacing:.24em;text-transform:uppercase}
.rule{height:1px;background:var(--hair);border:0;margin:0}

/* ---------- atmosphere ---------- */
.grain{
  position:fixed;inset:-50%;width:200%;height:200%;z-index:300;pointer-events:none;opacity:.035;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='130' height='130'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.88' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation:grain 6.5s steps(6) infinite;
}
@keyframes grain{
  0%{transform:translate(0,0)}20%{transform:translate(-3%,2%)}40%{transform:translate(2%,-3%)}
  60%{transform:translate(-2%,-2%)}80%{transform:translate(3%,1%)}100%{transform:translate(0,0)}
}

/* ---------- loader ---------- */
.loader{
  position:fixed;inset:0;z-index:400;display:grid;grid-template-rows:auto 1fr auto;
  padding:var(--gut);background:var(--obsidian);
  transition:opacity .9s var(--e),visibility .9s;
}
.loader.done{opacity:0;visibility:hidden;pointer-events:none}
.loader-top{display:flex;justify-content:space-between;align-items:center}
.loader-mid{align-self:center;justify-self:center;text-align:center;width:min(30rem,86vw)}
.loader-num{font-family:var(--display);font-size:clamp(5rem,18vw,11rem);font-weight:300;line-height:.8;
  color:var(--porcelain)}
.loader-num sup{font-size:.28em;vertical-align:super;color:var(--gold);margin-left:.1em}
.loader-bar{height:1px;background:var(--hair);margin-top:2.5rem;overflow:hidden}
.loader-bar i{display:block;height:100%;background:var(--gold);transform:scaleX(0);transform-origin:left}
.loader-word{margin-top:1.1rem;color:var(--light-muted)}
.loader-foot{align-self:end;justify-self:end;font-family:var(--display);font-style:italic;
  font-size:clamp(1rem,2vw,1.4rem);color:var(--light-muted)}

/* ---------- 3D stage ---------- */
.stage{position:fixed;inset:0;z-index:2;pointer-events:none}
.stage canvas{display:block;width:100%;height:100%}
.halo{
  position:fixed;z-index:1;top:50%;left:50%;width:min(70vmin,44rem);aspect-ratio:1;
  border-radius:50%;pointer-events:none;transform:translate(-50%,-50%);
  background:radial-gradient(circle,rgba(201,162,39,.10),transparent 62%);
  transition:opacity .8s var(--e);
}

/* ---------- header ---------- */
.hdr{
  position:fixed;top:0;left:0;right:0;z-index:100;display:grid;
  grid-template-columns:1fr auto 1fr;align-items:center;gap:1rem;
  padding:1.35rem var(--gut);transition:background .4s var(--e),padding .4s var(--e);
}
.hdr.stuck{background:rgba(10,21,25,.82);backdrop-filter:blur(14px);padding-block:.95rem}
.logo{display:flex;align-items:center;gap:.65rem;font-family:var(--display);font-size:1.1rem;letter-spacing:-.02em}
.logo b{display:grid;place-items:center;width:2.1rem;aspect-ratio:1;border:1px solid var(--hair);
  border-radius:50%;font-size:1rem;font-style:italic;font-weight:400}
.logo i{font-style:italic;color:var(--light-muted);font-size:.82rem;display:block;line-height:1}
.hdr nav{display:flex;gap:clamp(1.2rem,2.4vw,2.4rem);justify-self:center}
.hdr nav a{position:relative;font-size:.72rem;letter-spacing:.11em;text-transform:uppercase;
  color:var(--light-muted);transition:color .3s}
.hdr nav a::after{content:"";position:absolute;left:0;right:0;bottom:-.4rem;height:1px;background:var(--gold);
  transform:scaleX(0);transform-origin:right;transition:transform .45s var(--e)}
.hdr nav a:hover{color:var(--porcelain)}
.hdr nav a:hover::after{transform:scaleX(1);transform-origin:left}
.hdr-cta{justify-self:end}
.btn{
  position:relative;display:inline-flex;align-items:center;gap:.7rem;overflow:hidden;isolation:isolate;
  padding:.85rem 1.5rem;border-radius:99px;background:var(--gold);color:var(--obsidian);
  font-size:.8rem;font-weight:600;letter-spacing:.01em;transition:transform .45s var(--e);
}
.btn::after{content:"";position:absolute;inset:0;z-index:-1;background:var(--porcelain);
  transform:translateY(101%);transition:transform .5s var(--e)}
.btn:hover::after{transform:translateY(0)}
.btn.ghost{background:transparent;color:var(--porcelain);border:1px solid var(--hair)}
.btn.ghost::after{background:var(--porcelain)}
.btn.ghost:hover{color:var(--obsidian)}
.burger{display:none;justify-self:end;width:2.6rem;height:2.6rem;border:1px solid var(--hair);border-radius:50%;
  position:relative}
.burger i{position:absolute;left:50%;width:.9rem;height:1px;background:var(--porcelain);
  transform:translateX(-50%);transition:transform .4s var(--e),opacity .3s}
.burger i:nth-child(1){top:1.1rem}.burger i:nth-child(2){top:1.45rem}
body.menu .burger i:nth-child(1){transform:translateX(-50%) translateY(.18rem) rotate(45deg)}
body.menu .burger i:nth-child(2){transform:translateX(-50%) translateY(-.17rem) rotate(-45deg)}
@media(max-width:900px){
  .hdr{grid-template-columns:1fr auto}
  .hdr nav,.hdr-cta{display:none}
  .burger{display:block}
}
.drawer{
  position:fixed;inset:0;z-index:95;display:grid;align-content:center;gap:.4rem;padding:var(--gut);
  background:var(--obsidian-2);opacity:0;visibility:hidden;transition:opacity .5s var(--e),visibility .5s;
}
body.menu .drawer{opacity:1;visibility:visible}
.drawer a{font-family:var(--display);font-size:clamp(2rem,9vw,3.4rem);line-height:1.2}
.drawer a em{font-style:italic;color:var(--gold)}

/* ---------- progress rail / timeline ---------- */
.rail{position:fixed;z-index:90;left:clamp(.9rem,2.4vw,2.2rem);top:50%;transform:translateY(-50%);
  display:grid;gap:0;justify-items:start}
.rail::before{content:"";position:absolute;left:.19rem;top:.2rem;bottom:.2rem;width:1px;
  background:rgba(246,242,234,.16)}
.rail::after{content:"";position:absolute;left:.19rem;top:.2rem;width:1px;height:var(--prog,0%);
  background:var(--gold);transition:height .25s linear}
.rail button{position:relative;display:flex;align-items:center;gap:.75rem;padding:.42rem 0;
  color:var(--light-muted);font-family:var(--mono);font-size:.53rem;letter-spacing:.16em;
  text-transform:uppercase;white-space:nowrap;transition:color .35s var(--e)}
.rail button i{position:relative;z-index:1;width:.4rem;height:.4rem;border-radius:50%;flex:none;
  background:rgba(246,242,234,.28);transition:background .35s var(--e),transform .35s var(--e),
  box-shadow .35s var(--e)}
.rail button span{opacity:.34;transform:translateX(-.2rem);
  transition:opacity .35s var(--e),transform .35s var(--e)}
.rail button:hover span{opacity:.8;transform:translateX(0)}
.rail button.on{color:var(--porcelain)}
.rail button.on i{background:var(--gold);transform:scale(1.5);box-shadow:0 0 0 .28rem rgba(201,162,39,.16)}
.rail button.on span{opacity:1;transform:translateX(0)}
.rail{display:none!important}

/* ---------- cursor ---------- */
.cur,.cur-r{position:fixed;top:0;left:0;z-index:350;border-radius:50%;pointer-events:none;will-change:transform}
.cur{width:5px;height:5px;margin:-2.5px 0 0 -2.5px;background:var(--gold)}
.cur-r{width:34px;height:34px;margin:-17px 0 0 -17px;border:1px solid rgba(246,242,234,.3);
  transition:width .3s var(--e),height .3s var(--e),margin .3s var(--e),background .3s,border-color .3s}
body.hov .cur-r{width:62px;height:62px;margin:-31px 0 0 -31px;background:rgba(201,162,39,.13);border-color:var(--gold)}
body.drag .cur-r{width:80px;height:80px;margin:-40px 0 0 -40px;border-color:var(--gold)}
body.drag .cur-r::after{content:"drag";position:absolute;inset:0;display:grid;place-content:center;
  font-family:var(--mono);font-size:.5rem;letter-spacing:.14em;color:var(--porcelain)}
@media(hover:none),(pointer:coarse){.cur,.cur-r{display:none}}

/* ---------- generic section ---------- */
section{position:relative;z-index:5}
.pad{padding:clamp(4.5rem,11vw,10rem) var(--gut)}
.eyebrow{display:flex;align-items:center;gap:.7rem;color:var(--gold);margin-bottom:1.5rem}
.eyebrow::before{content:"";width:1.6rem;height:1px;background:var(--gold)}
.lead{color:var(--light-muted);font-size:1.02rem;line-height:1.75;max-width:38ch}
.ln{display:block;overflow:hidden}
.ln>span{display:block}

/* ---------- hero ---------- */
.hero{min-height:100svh;display:grid;grid-template-rows:1fr auto;gap:2rem;
  padding:clamp(6.5rem,12vh,9rem) var(--gut) clamp(1.5rem,4vh,2.5rem);pointer-events:none}
.hero>*{pointer-events:auto}
.hero-mid{align-self:center;text-align:center}
.hero h1{font-size:clamp(3rem,12.5vw,11.5rem);line-height:.84}
.hero h1 em{font-style:italic;color:var(--gold)}
.hero-sub{margin:2.4rem auto 0;max-width:36rem;color:var(--light-muted);font-size:1.02rem;line-height:1.75}
.hero-acts{display:flex;flex-wrap:wrap;gap:.8rem;justify-content:center;margin-top:2.2rem}
.hero-foot{display:grid;grid-template-columns:repeat(auto-fit,minmax(8rem,1fr));gap:1.5rem;align-items:end;
  border-top:1px solid var(--hair);padding-top:1.3rem}
.hero-foot div{display:grid;gap:.25rem}
.hero-foot b{font-family:var(--display);font-size:clamp(1.7rem,3.4vw,2.6rem);font-weight:300;line-height:.9}
.hero-foot span{color:var(--light-muted);font-size:.58rem;letter-spacing:.15em;text-transform:uppercase}
.scroll-hint{display:flex;align-items:center;gap:.6rem;color:var(--light-muted);justify-self:end}
.scroll-hint i{width:1px;height:2.2rem;background:linear-gradient(var(--gold),transparent);animation:drop 2s infinite}
@keyframes drop{0%{transform:scaleY(0);transform-origin:top}50%{transform:scaleY(1);transform-origin:top}
  51%{transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

/* ---------- marquee ---------- */
.marq{overflow:hidden;padding:1.15rem 0;border-block:1px solid var(--hair);background:var(--obsidian)}
.marq div{display:flex;width:max-content;gap:2.6rem;font-family:var(--display);
  font-size:clamp(1.25rem,2.9vw,2.2rem);font-style:italic;white-space:nowrap}
.marq span{color:var(--porcelain)}
.marq b{color:var(--gold);font-weight:300}

/* ---------- ethos (pinned) ---------- */
.ethos-in{height:100svh;display:grid;place-items:center;padding:var(--gut);text-align:center;
  position:relative}
/* all lines occupy the same centred cell — one is visible at a time */
.ethos-stack{display:grid;place-items:center;width:min(90vw,58rem)}
.ethos-line{grid-area:1/1;font-family:var(--display);font-size:clamp(1.5rem,3.6vw,3rem);
  line-height:1.14;text-wrap:balance;will-change:transform,opacity,filter}
.ethos-line em{font-style:italic;color:var(--gold)}
.ethos-count{position:absolute;bottom:12%;left:50%;transform:translateX(-50%);
  font-family:var(--mono);font-size:.55rem;letter-spacing:.2em;color:var(--light-muted)}
.ethos-count b{color:var(--gold);font-weight:400}

/* ---------- treatments rail ---------- */
.treat{background:var(--porcelain);color:var(--obsidian);min-height:100svh;
  display:grid;grid-template-rows:auto 1fr;overflow:hidden}
.treat .eyebrow{color:var(--clay)}
.treat .eyebrow::before{background:var(--clay)}
.treat-head{display:flex;justify-content:space-between;align-items:flex-end;gap:1.5rem;flex-wrap:wrap;
  padding:clamp(6rem,11vh,7.5rem) var(--gut) 1.4rem}
.treat-head h2{font-size:clamp(1.9rem,4.6vw,3.6rem)}
.treat-head h2 em{font-style:italic;color:var(--clay)}
.treat-head .mono{color:var(--ink-muted)}
.treat-view{display:flex;align-items:center;overflow:hidden;
  padding-block:.5rem clamp(2rem,5vh,3.5rem)}
.treat-track{display:flex;gap:1.4rem;width:max-content;padding:0 var(--gut);align-items:stretch}
.tcard{width:min(78vw,23rem);padding:1.9rem;display:grid;gap:.85rem;align-content:start;
  border:1px solid var(--hair-d);background:rgba(255,255,255,.5);
  transition:background .45s var(--e),transform .45s var(--e)}
.tcard:hover{background:#fff;transform:translateY(-5px)}
.tcard .n{font-family:var(--mono);font-size:.55rem;letter-spacing:.2em;text-transform:uppercase;color:var(--clay)}
.tcard h3{font-size:1.6rem}
.tcard p{color:var(--ink-muted);font-size:.89rem;line-height:1.62}
.tcard ul{margin:.1rem 0 0;padding-left:1.05rem;color:var(--ink-muted);font-size:.81rem;line-height:1.8}
.tcard ul li::marker{color:var(--clay)}

/* ---------- shader band ---------- */
.field{position:relative;isolation:isolate;overflow:hidden;min-height:88svh;display:grid;align-content:center;
  gap:1.6rem;padding:clamp(4.5rem,11vw,10rem) var(--gut)}
.field canvas{position:absolute;inset:0;z-index:-2;width:100%;height:100%;display:block}
.field::after{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:linear-gradient(to bottom,rgba(10,21,25,.8),rgba(10,21,25,.45) 48%,rgba(10,21,25,.86))}
.field h2{font-size:clamp(2rem,5.6vw,4.4rem);max-width:18ch}
.field h2 em{font-style:italic;color:var(--gold)}
.field .lead{max-width:44ch}
.field-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(11rem,1fr));gap:1px;
  background:var(--hair);border:1px solid var(--hair);margin-top:1.4rem}
.field-grid div{background:rgba(10,21,25,.62);padding:1.5rem;display:grid;gap:.35rem}
.field-grid b{font-family:var(--display);font-size:clamp(2rem,4.4vw,3rem);font-weight:300;line-height:.9}
.field-grid b i{color:var(--gold);font-style:normal}
.field-grid span{color:var(--light-muted);font-size:.57rem;letter-spacing:.15em;text-transform:uppercase}

/* ---------- results / compare ---------- */
.res{background:var(--porcelain);color:var(--obsidian);display:grid;justify-items:center;gap:2.2rem}
.res .eyebrow{color:var(--clay);justify-content:center}
.res .eyebrow::before{background:var(--clay)}
.res h2{font-size:clamp(2rem,5.4vw,4rem);text-align:center}
.res h2 em{font-style:italic;color:var(--clay)}
.cmp{position:relative;width:min(100%,56rem);aspect-ratio:16/10;overflow:hidden;cursor:ew-resize;
  user-select:none;border:1px solid var(--hair-d);touch-action:none}
.cmp img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;pointer-events:none}
.cmp .aft{clip-path:inset(0 0 0 var(--sp,50%))}
.cmp .tag{position:absolute;bottom:1rem;padding:.42rem .75rem;background:rgba(10,21,25,.76);
  color:var(--porcelain);font-family:var(--mono);font-size:.54rem;letter-spacing:.18em;text-transform:uppercase;
  pointer-events:none}
.cmp .tag.l{left:1rem}.cmp .tag.r{right:1rem}
.cmp .hd{position:absolute;top:0;bottom:0;left:var(--sp,50%);width:2px;background:var(--porcelain);
  pointer-events:none}
.cmp .hd::after{content:"⇄";position:absolute;top:50%;left:50%;display:grid;place-content:center;
  width:3rem;height:3rem;border-radius:50%;background:var(--porcelain);color:var(--obsidian);
  transform:translate(-50%,-50%);box-shadow:0 .5rem 1.6rem rgba(10,21,25,.28);font-size:.85rem}

/* ---------- process (pinned) ---------- */
.proc{background:var(--obsidian-2)}
.proc-in{min-height:100svh;display:grid;grid-template-columns:.85fr 1fr;gap:clamp(2rem,6vw,6rem);
  align-items:center;padding:clamp(3.5rem,9vw,8rem) var(--gut)}
@media(max-width:900px){.proc-in{grid-template-columns:1fr;gap:2.5rem}}
.proc h2{font-size:clamp(2rem,5.2vw,4rem)}
.proc h2 em{font-style:italic;color:var(--gold)}
.steps{display:grid}
.step{display:grid;grid-template-columns:auto 1fr;gap:1.3rem;padding:1.5rem 0;
  border-top:1px solid var(--hair);opacity:.3;transition:opacity .5s var(--e)}
.step:last-child{border-bottom:1px solid var(--hair)}
.step.on{opacity:1}
.step .num{font-family:var(--mono);font-size:.6rem;color:var(--gold);padding-top:.4rem}
.step h3{font-size:1.45rem;margin-bottom:.45rem}
.step p{color:var(--light-muted);font-size:.9rem;line-height:1.7}

/* ---------- proof ---------- */
.proof{display:grid;gap:clamp(2.5rem,5vw,4rem);justify-items:center;text-align:center}
.proof blockquote{margin:0;font-family:var(--display);font-size:clamp(1.5rem,4vw,3rem);line-height:1.14;
  max-width:22ch}
.proof blockquote em{font-style:italic;color:var(--gold)}
.proof .by{color:var(--light-muted)}
.stars{display:flex;gap:.3rem;color:var(--gold);font-size:.85rem}

/* ---------- planner ---------- */
.plan{background:var(--porcelain);color:var(--obsidian);display:grid;
  grid-template-columns:.9fr 1fr;gap:clamp(2rem,5vw,5rem);align-items:start}
@media(max-width:920px){.plan{grid-template-columns:1fr}}
.plan .eyebrow{color:var(--clay)}
.plan .eyebrow::before{background:var(--clay)}
.plan h2{font-size:clamp(2rem,5vw,3.6rem)}
.plan h2 em{font-style:italic;color:var(--clay)}
.plan .lead{color:var(--ink-muted);margin-top:1.2rem}
.plan-sticky{position:sticky;top:7rem}
@media(max-width:920px){.plan-sticky{position:static}}
.pbox{border:1px solid var(--hair-d);background:rgba(255,255,255,.55)}
.pstep{padding:1.6rem;border-bottom:1px solid var(--hair-d)}
.pstep>p{margin-bottom:.95rem;display:flex;align-items:center;gap:.6rem;color:var(--ink-muted);
  font-family:var(--mono);font-size:.56rem;letter-spacing:.17em;text-transform:uppercase}
.pstep>p b{display:grid;place-content:center;width:1.35rem;aspect-ratio:1;border:1px solid var(--clay);
  border-radius:50%;color:var(--clay);font-weight:400}
.opts{display:flex;flex-wrap:wrap;gap:.55rem}
.opt{padding:.62rem 1.05rem;border:1px solid var(--hair-d);border-radius:99px;font-size:.86rem;
  transition:border-color .3s var(--e),background .3s var(--e),color .3s var(--e),transform .3s var(--e)}
.opt:hover{border-color:var(--clay);transform:translateY(-2px)}
.opt.on{background:var(--obsidian);color:var(--porcelain);border-color:var(--obsidian)}
.pres{padding:1.9rem;background:var(--obsidian);color:var(--porcelain);display:grid;gap:1.05rem}
.pres[hidden]{display:none}
.pres h3{font-size:1.7rem}
.pres h3 em{font-style:italic;color:var(--gold)}
.pres p{color:var(--light-muted);font-size:.93rem;line-height:1.7}
.pfacts{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--hair);border:1px solid var(--hair)}
.pfacts div{background:var(--obsidian);padding:.95rem;display:grid;gap:.25rem}
.pfacts b{font-family:var(--display);font-size:1.35rem;font-weight:300}
.pfacts span{color:var(--light-muted);font-size:.5rem;letter-spacing:.13em;text-transform:uppercase}

/* ---------- contact ---------- */
.book{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,5vw,5rem)}
@media(max-width:920px){.book{grid-template-columns:1fr}}
.book h2{font-size:clamp(2.1rem,5.4vw,4rem)}
.book h2 em{font-style:italic;color:var(--gold)}
.cmeta{display:grid;gap:.9rem;margin-top:2.2rem}
.cmeta a,.cmeta div{display:grid;gap:.22rem;padding-bottom:.9rem;border-bottom:1px solid var(--hair)}
.cmeta span{color:var(--light-muted);font-size:.56rem;letter-spacing:.15em;text-transform:uppercase}
.cmeta b{font-weight:500;font-size:1rem}
form{display:grid;gap:1.15rem;align-content:start}
.row{display:grid;grid-template-columns:1fr 1fr;gap:1.15rem}
@media(max-width:560px){.row{grid-template-columns:1fr}}
label{display:grid;gap:.42rem}
label>span{color:var(--light-muted);font-size:.56rem;letter-spacing:.15em;text-transform:uppercase}
input,select,textarea{width:100%;padding:.72rem 0;border:0;border-bottom:1px solid rgba(246,242,234,.22);
  background:transparent;color:var(--porcelain);font:inherit;font-size:.95rem;outline:none;
  transition:border-color .3s}
input::placeholder,textarea::placeholder{color:rgba(246,242,234,.32)}
input:focus,select:focus,textarea:focus{border-color:var(--gold)}
select option{background:var(--obsidian);color:var(--porcelain)}
textarea{resize:vertical}
form .btn{margin-top:.5rem;justify-self:start;border:0}
.status{color:var(--gold);font-size:.85rem;min-height:1.2em}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--hair);padding:3.2rem var(--gut);display:grid;gap:1.6rem}
.f-top{display:flex;justify-content:space-between;gap:2rem;flex-wrap:wrap;align-items:flex-end}
.f-top p{font-family:var(--display);font-size:clamp(1.5rem,3.4vw,2.4rem);line-height:1.1}
.f-top p em{font-style:italic;color:var(--gold)}
.f-bot{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;
  color:var(--light-muted);font-size:.74rem}

/* ---------- reveal ---------- */
.rv{opacity:0;transform:translateY(26px)}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .grain{animation:none}
  .rv{opacity:1;transform:none}
  .ethos-line,.step{opacity:1}
  .cur,.cur-r{display:none}
  .scroll-hint i{animation:none}
  *{transition-duration:.01ms!important;animation-duration:.01ms!important}
}

/* treatments progress */
.treat-meta{display:grid;gap:.7rem;justify-items:end;min-width:11rem}
.treat-bar{width:100%;height:1px;background:var(--hair-d);overflow:hidden}
.treat-bar i{display:block;height:100%;background:var(--clay);transform:scaleX(0);transform-origin:left}
@media(max-width:820px){.treat-meta{display:none}}

/* ==========================================================================
   Detail layer — architectural marks, credentials, section indices
   ========================================================================== */

/* corner frame marks (hero) */
.frame{position:fixed;inset:clamp(.7rem,1.6vw,1.5rem);z-index:80;pointer-events:none;
  opacity:0;transition:opacity .8s var(--e)}
body:not(.lock) .frame{opacity:1}
.frame i{position:absolute;width:clamp(1rem,1.8vw,1.6rem);height:clamp(1rem,1.8vw,1.6rem);
  border:0 solid rgba(246,242,234,.22)}
.frame i:nth-child(1){top:0;left:0;border-top-width:1px;border-left-width:1px}
.frame i:nth-child(2){top:0;right:0;border-top-width:1px;border-right-width:1px}
.frame i:nth-child(3){bottom:0;left:0;border-bottom-width:1px;border-left-width:1px}
.frame i:nth-child(4){bottom:0;right:0;border-bottom-width:1px;border-right-width:1px}
@media(max-width:900px){.frame{display:none}}

/* section index */
.sx{position:absolute;top:clamp(1.4rem,3vw,2.6rem);right:var(--gut);
  font-family:var(--mono);font-size:.55rem;letter-spacing:.2em;color:var(--light-muted);opacity:.5}
.treat .sx,.res .sx,.plan .sx{color:var(--ink-muted)}

/* credentials strip */
.creds{display:grid;grid-template-columns:repeat(auto-fit,minmax(9rem,1fr));gap:1px;
  background:var(--hair);border-block:1px solid var(--hair)}
.creds div{background:var(--obsidian);padding:1.6rem 1.2rem;display:grid;gap:.4rem;
  place-items:center;text-align:center}
.creds b{font-family:var(--display);font-size:.98rem;font-weight:400;letter-spacing:.01em}
.creds span{color:var(--light-muted);font-family:var(--mono);font-size:.5rem;letter-spacing:.16em;
  text-transform:uppercase}

/* card hover reveal */
.tcard{position:relative;overflow:hidden}
.tcard::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--clay);
  transform:scaleX(0);transform-origin:left;transition:transform .55s var(--e)}
.tcard:hover::after{transform:scaleX(1)}
.tcard .go{display:inline-flex;align-items:center;gap:.5rem;margin-top:.3rem;color:var(--clay);
  font-size:.78rem;font-weight:600;opacity:0;transform:translateY(6px);
  transition:opacity .45s var(--e),transform .45s var(--e)}
.tcard:hover .go{opacity:1;transform:translateY(0)}

/* pull-quote divider */
.divider{display:grid;place-items:center;gap:1.1rem;padding:clamp(3rem,7vw,6rem) var(--gut);
  text-align:center;border-block:1px solid var(--hair)}
.divider p{font-family:var(--display);font-style:italic;font-size:clamp(1.15rem,2.6vw,1.9rem);
  color:var(--light-muted);max-width:34ch}
.divider .mono{color:var(--gold)}

/* ==========================================================================
   Full-viewport sections
   ========================================================================== */
.pad{min-height:100svh;display:grid;align-content:center;
  padding:clamp(5.5rem,9vw,7rem) var(--gut) clamp(3rem,6vw,5rem)}
.field{min-height:100svh}
.ethos{min-height:100svh}
.proc{min-height:100svh}
.proc-in{min-height:100svh}

/* sections with a lot of content: allow growth on short screens only */
@media(max-height:720px){
  .pad{min-height:auto;padding-block:clamp(4rem,8vw,6rem)}
  .proc-in{height:auto;min-height:100svh}
}
/* tighten the denser sections so they fit one screen */
.res{gap:1.6rem}
.res .cmp{width:min(100%,48rem);aspect-ratio:16/9}
.plan{align-content:center}
.book{align-content:center}
.divider{min-height:auto;padding-block:clamp(2.5rem,6vw,5rem)}
.creds div{padding:1.25rem 1rem}

/* ==========================================================================
   Legibility over the 3D model — soft shadow behind light text
   ========================================================================== */
.hero h1,.hero-sub,.hero .eyebrow,.hero-foot b,.hero-foot span,.scroll-hint,
.ethos-line,.ethos-count,
.field h2,.field .lead,.field .eyebrow,.field-grid b,.field-grid span,
.proc h2,.proc .eyebrow,.step h3,.step p,.step .num,
.proof blockquote,.proof .by,.stars,
.book h2,.book .eyebrow,.book .lead,.cmeta b,.cmeta span,
.divider p,.divider .mono,
.creds b,.creds span,
.marq span,.marq b,
.f-top p,.f-bot,
.pres h3,.pres p,.pfacts b,.pfacts span,
.hdr .logo,.hdr nav a,
.sx{
  text-shadow:0 1px 3px rgba(4,12,16,.55), 0 0 18px rgba(4,12,16,.35);
}
/* dark-on-light sections must NOT inherit the shadow */
.treat *,.res *,.plan .plan-sticky *,.plan .pstep *,.tcard *{text-shadow:none}
.plan .pres *{text-shadow:0 1px 3px rgba(4,12,16,.55)}

/* extra scrim directly behind hero copy so the model never eats it */
.hero-mid{position:relative}
.hero-mid::before{content:"";position:absolute;z-index:-1;inset:-12% -8%;pointer-events:none;
  background:radial-gradient(ellipse at center,rgba(6,17,22,.55),rgba(6,17,22,.22) 58%,transparent 80%)}
.ethos-stack{position:relative}
.ethos-stack::before{content:"";position:absolute;z-index:-1;inset:-30% -12%;pointer-events:none;
  background:radial-gradient(ellipse at center,rgba(6,17,22,.42),rgba(6,17,22,.16) 60%,transparent 82%)}

/* keep all content above the 3D stage */
section,header,footer,.marq,.creds,.divider{z-index:10}
.ethos-in,.proc-in,.hero-mid{position:relative;z-index:11}

/* ==========================================================================
   Photography
   ========================================================================== */

/* hero backdrop — sits behind the 3D model and all copy */
/* Own layer at z-index 1 — below the 3D canvas (z-index 2), above the page
   background. Deliberately NOT a child of .hero, whose z-index would trap it. */
.hero-bg{position:absolute;top:0;left:0;right:0;height:100svh;z-index:1;
  overflow:hidden;pointer-events:none}
.hero-bg img{width:100%;height:100%;object-fit:cover;object-position:60% 45%;
  filter:saturate(.95) contrast(1.03);transform:scale(1.04)}
.hero-bg::after{content:"";position:absolute;inset:0;
  background:
    linear-gradient(to bottom,rgba(10,21,25,.30),rgba(10,21,25,.18) 45%,rgba(10,21,25,.88)),
    radial-gradient(ellipse at 50% 45%,rgba(10,21,25,.05),rgba(10,21,25,.55) 78%)}
.hero{overflow:visible;background:transparent}

/* ethos image sequence — one plate at a time, behind the line */
.ethos-media{position:absolute;inset:0;display:grid;place-items:center;pointer-events:none;z-index:-1}
.em{grid-area:1/1;margin:0;width:min(46vw,34rem);aspect-ratio:16/10;overflow:hidden;
  opacity:0;will-change:transform,opacity,filter}
.em img{width:100%;height:100%;object-fit:cover;filter:saturate(.95) contrast(1.04)}
.em{position:relative}
.em::after{content:"";position:absolute;inset:0;
  background:linear-gradient(to bottom,rgba(10,21,25,.12),rgba(10,21,25,.42))}
.ethos-in{isolation:isolate}
@media(max-width:820px){.em{width:78vw}}

/* technology plate */
.field-plate{position:absolute;right:0;bottom:0;z-index:-1;margin:0;
  width:min(42vw,32rem);aspect-ratio:16/10;overflow:hidden;opacity:.28;
  -webkit-mask-image:linear-gradient(to left,#000,transparent);
  mask-image:linear-gradient(to left,#000,transparent)}
.field-plate img{width:100%;height:100%;object-fit:cover;filter:saturate(.7)}
@media(max-width:900px){.field-plate{display:none}}

/* results aside */
.res-aside{margin:0;display:grid;gap:.7rem;width:min(100%,48rem);justify-items:start}
.res-aside img{width:100%;aspect-ratio:21/9;object-fit:cover;border:1px solid var(--hair-d)}
.res-aside figcaption{color:var(--ink-muted);font-family:var(--mono);font-size:.55rem;
  letter-spacing:.16em;text-transform:uppercase}
@media(max-height:820px){.res-aside{display:none}}

/* Technology: hold the copy left so the model owns the right side */
.field > *:not(canvas):not(.field-plate){max-width:min(56%,44rem)}
.field-grid{grid-template-columns:repeat(auto-fit,minmax(9rem,1fr))}
/* studio plate moves out of the model's way */
.field-plate{right:auto;left:0;bottom:0;width:min(30vw,22rem);opacity:.2;
  -webkit-mask-image:linear-gradient(to right,#000,transparent);
  mask-image:linear-gradient(to right,#000,transparent)}
@media(max-width:900px){
  .field > *:not(canvas):not(.field-plate){max-width:100%}
}

/* ==========================================================================
   Technology: let the 3D model sit between the shader and the copy.
   .field must NOT create a stacking context, or its opaque shader canvas
   traps everything inside it and hides the canvas (stage, z-index 2).
   Layer order: shader (1) -> scrim (1) -> model (2) -> copy (10)
   ========================================================================== */
.field{z-index:auto}
.field canvas{z-index:1}
.field::after{z-index:1}
.field-plate{z-index:1}
.field > *:not(canvas):not(.field-plate){position:relative;z-index:10}

/* Process: same fix as .field — the section's opaque background was trapping
   the 3D canvas. Layer: section bg -> model (2) -> copy (10) */
.proc{z-index:auto}
.proc-in{position:relative;z-index:10}
.proc-in > *{position:relative;z-index:10}

/* ==========================================================================
   Revisions — heading, clearance, mobile
   ========================================================================== */

/* "What we actually do" on a single line, so the cards sit higher */
.treat-head h2.one-line{font-size:clamp(1.6rem,3.6vw,3rem);white-space:nowrap}
.treat-head{padding-block:clamp(5rem,9vh,6.2rem) 1rem;align-items:center}
.treat-view{padding-block:0 clamp(1.5rem,4vh,3rem)}
@media(max-width:1100px){.treat-head h2.one-line{white-space:normal}}

/* Proof + Promise: the model sits large on the right, so hold the text left */
.proof{justify-items:start;text-align:left}
.proof blockquote{margin:0;max-width:min(58%,26ch)}
.proof .by,.proof .stars{text-align:left}
.divider{justify-items:start;text-align:left;min-height:70svh;align-content:center}
.divider p{max-width:min(56%,40ch)}
.divider .sx{color:var(--light-muted)}
@media(max-width:900px){
  .proof{justify-items:center;text-align:center}
  .proof blockquote{max-width:24ch}
  .proof .by,.proof .stars{text-align:center}
  .divider{justify-items:center;text-align:center;padding-block:clamp(3rem,8vh,5rem)}
  .divider p{max-width:34ch}
}

/* ==========================================================================
   Mobile pass
   ========================================================================== */
@media(max-width:900px){
  :root{--gut:1.15rem}

  /* hero */
  .hero{padding-top:clamp(5.5rem,14vh,7rem)}
  .hero h1{font-size:clamp(2.6rem,13vw,4.6rem)}
  .hero-sub{font-size:.95rem;margin-top:1.6rem}
  .hero-acts{gap:.6rem}
  .hero-acts .btn{flex:1 1 auto;justify-content:center;text-align:center}
  .hero-foot{grid-template-columns:repeat(3,1fr);gap:.9rem}
  .hero-foot b{font-size:clamp(1.3rem,6vw,1.8rem)}
  .hero-foot span{font-size:.5rem}
  .scroll-hint{display:none}

  /* headings */
  .field h2,.proc h2,.plan h2,.book h2,.res h2,.treat-head h2{
    font-size:clamp(1.8rem,8.5vw,2.6rem)}
  .ethos-line{font-size:clamp(1.35rem,6.4vw,2.1rem)}
  .proof blockquote{font-size:clamp(1.3rem,6.4vw,2rem)}
  .divider p{font-size:clamp(1.05rem,4.6vw,1.4rem)}

  /* treatments */
  .treat{min-height:auto}
  .treat-head{padding-block:clamp(4rem,10vh,5rem) 1.2rem}
  .treat-view{overflow-x:auto;overflow-y:hidden;-webkit-overflow-scrolling:touch;
    scroll-snap-type:x mandatory;padding-bottom:1.5rem}
  .treat-view::-webkit-scrollbar{height:2px}
  .treat-view::-webkit-scrollbar-thumb{background:var(--clay)}
  .treat-track{width:max-content}
  .tcard{width:82vw;scroll-snap-align:center}

  /* technology */
  .field{min-height:auto;padding-block:clamp(4rem,10vh,6rem)}
  .field-grid{grid-template-columns:repeat(2,1fr)}

  /* process */
  .proc-in{min-height:auto;padding-block:clamp(4rem,10vh,6rem)}
  .step{padding:1.15rem 0;gap:.9rem}
  .step h3{font-size:1.2rem}
  .step p{font-size:.85rem}

  /* results */
  .cmp{aspect-ratio:4/3}
  .res{gap:1.2rem}

  /* plan + contact */
  .pstep{padding:1.2rem}
  .opt{font-size:.8rem;padding:.55rem .9rem}
  .pfacts{grid-template-columns:1fr}
  .cmeta{margin-top:1.5rem}
  .row{gap:1rem}

  /* footer */
  .f-top{flex-direction:column;align-items:flex-start;gap:1.2rem}
  .f-bot{flex-direction:column;gap:.5rem}

  /* chrome */
  .sx{display:none}
  .creds{grid-template-columns:repeat(2,1fr)}
  .marq div{font-size:clamp(1.05rem,5vw,1.5rem);gap:1.6rem}
}

@media(max-width:560px){
  .hero-foot{grid-template-columns:repeat(3,1fr)}
  .field-grid{grid-template-columns:1fr}
  .creds{grid-template-columns:1fr}
  .tcard{width:86vw;padding:1.5rem}
  .hero-acts{flex-direction:column}
  .hero-acts .btn{width:100%}
}

/* touch devices: no hover chrome, no drag cursor */
@media(hover:none){
  .tcard:hover{transform:none}
  .btn:hover{transform:none}
}