:root{
  --ink:#f8fbff;
  --muted:#b9c8e8;
  --bg:#070719;
  --bg2:#111030;
  --panel:rgba(255,255,255,.095);
  --panel2:rgba(255,255,255,.14);
  --line:rgba(255,255,255,.18);
  --aqua:#18f6ff;
  --violet:#8a5cff;
  --rose:#ff4fd8;
  --peach:#ffb45e;
  --lime:#b9ff4f;
  --deep:#161039;
  --shadow:0 28px 90px rgba(0,0,0,.45);
  --radius:28px;
  --max:1180px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;
  color:var(--ink);
  background:
    radial-gradient(circle at 10% 0%,rgba(255,79,216,.28),transparent 32rem),
    radial-gradient(circle at 80% 8%,rgba(24,246,255,.22),transparent 35rem),
    radial-gradient(circle at 50% 70%,rgba(185,255,79,.12),transparent 34rem),
    linear-gradient(135deg,#070719 0%,#111030 48%,#060913 100%);
  overflow-x:hidden;
  line-height:1.7;
}

a{color:inherit}
a:focus-visible,button:focus-visible{
  outline:3px solid var(--lime);
  outline-offset:4px;
  border-radius:12px;
}
.skip-link{
  position:absolute;
  left:-999px;
  top:1rem;
  z-index:999;
  padding:.8rem 1rem;
  background:#fff;
  color:#061022;
  border-radius:999px;
}
.skip-link:focus{left:1rem}

.ambient{position:fixed;inset:0;pointer-events:none;z-index:-2;overflow:hidden}
.orb{
  position:absolute;
  width:24rem;
  aspect-ratio:1;
  border-radius:50%;
  filter:blur(28px);
  opacity:.55;
  mix-blend-mode:screen;
  animation:floatOrb 18s ease-in-out infinite alternate;
}
.orb-a{background:#ff4fd8;left:-7rem;top:12rem}
.orb-b{background:#18f6ff;right:-8rem;top:1rem;animation-duration:22s}
.orb-c{background:#b9ff4f;left:42%;bottom:-10rem;animation-duration:26s}
.grid-veil{
  position:absolute;
  inset:-10%;
  background-image:
    linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:58px 58px;
  transform:perspective(800px) rotateX(62deg) translateY(-16%);
  transform-origin:center;
  opacity:.35;
  animation:gridMove 16s linear infinite;
}
@keyframes floatOrb{to{transform:translate3d(6rem,-3rem,0) scale(1.12)}}
@keyframes gridMove{to{background-position:0 116px,116px 0}}

.site-header{
  position:sticky;
  top:0;
  z-index:50;
  backdrop-filter:blur(18px);
  background:linear-gradient(90deg,rgba(7,7,25,.82),rgba(17,16,48,.62));
  border-bottom:1px solid var(--line);
}
.top-nav{
  max-width:var(--max);
  margin:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  padding:1rem;
}
.brand-mark{
  display:flex;
  align-items:center;
  gap:.7rem;
  text-decoration:none;
  font-weight:900;
  letter-spacing:.02em;
}
.brand-icon{
  width:42px;
  height:42px;
  display:grid;
  place-items:center;
  border-radius:14px;
  color:#061022;
  background:linear-gradient(135deg,var(--aqua),var(--lime) 45%,var(--peach));
  box-shadow:0 0 26px rgba(24,246,255,.4);
}
.nav-links{display:flex;align-items:center;gap:.4rem;flex-wrap:wrap}
.nav-links a{
  text-decoration:none;
  padding:.65rem .9rem;
  border-radius:999px;
  color:var(--muted);
  font-weight:750;
  font-size:.93rem;
}
.nav-links a:hover{background:rgba(255,255,255,.1);color:#fff}
.nav-cta{
  color:#07101f!important;
  background:linear-gradient(135deg,var(--lime),var(--aqua));
  box-shadow:0 0 18px rgba(185,255,79,.25);
}

.hero{
  min-height:calc(100vh - 76px);
  max-width:var(--max);
  margin:auto;
  padding:5rem 1rem 3rem;
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(320px,1.1fr);
  align-items:center;
  gap:2.5rem;
}
.eyebrow,.article-kicker{
  display:inline-flex;
  width:max-content;
  max-width:100%;
  padding:.48rem .78rem;
  border:1px solid rgba(24,246,255,.35);
  border-radius:999px;
  background:rgba(24,246,255,.09);
  color:#d9ffff;
  font-weight:800;
  letter-spacing:.08em;
  text-transform:uppercase;
  font-size:.78rem;
}
.hero h1{
  margin:1rem 0;
  font-size:clamp(2.55rem,7vw,6.15rem);
  line-height:.94;
  letter-spacing:-.075em;
  max-width:11ch;
  text-shadow:0 0 42px rgba(24,246,255,.12);
}
.hero-lede{
  max-width:60ch;
  color:var(--muted);
  font-size:clamp(1.05rem,2vw,1.25rem);
}
.hero-actions{display:flex;gap:.8rem;flex-wrap:wrap;margin-top:1.6rem}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:48px;
  padding:.85rem 1.1rem;
  border-radius:999px;
  text-decoration:none;
  font-weight:900;
  border:1px solid var(--line);
}
.btn.primary{
  color:#061022;
  background:linear-gradient(135deg,var(--aqua),var(--lime) 55%,var(--peach));
  box-shadow:0 14px 38px rgba(24,246,255,.18),0 0 24px rgba(185,255,79,.18);
}
.btn.ghost{background:rgba(255,255,255,.08);color:#fff}

.hero-stage{perspective:1200px}
.depth-card{
  position:relative;
  border:1px solid rgba(255,255,255,.2);
  border-radius:36px;
  background:
    linear-gradient(135deg,rgba(255,255,255,.16),rgba(255,255,255,.045)),
    radial-gradient(circle at 20% 0%,rgba(255,79,216,.24),transparent 42%),
    radial-gradient(circle at 80% 18%,rgba(24,246,255,.22),transparent 44%);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.25);
  backdrop-filter:blur(20px);
  overflow:hidden;
  transform-style:preserve-3d;
  transition:transform .18s ease;
}
.depth-card:before{
  content:"";
  position:absolute;
  inset:-2px;
  background:conic-gradient(from 120deg,transparent,var(--aqua),transparent,var(--rose),transparent,var(--lime),transparent);
  opacity:.22;
  animation:borderSpin 8s linear infinite;
}
.depth-card>*{position:relative}
@keyframes borderSpin{to{transform:rotate(1turn)}}
.holo-title{
  position:absolute;
  left:1.3rem;
  top:1.3rem;
  z-index:4;
  display:grid;
  gap:.15rem;
  padding:.8rem 1rem;
  border:1px solid rgba(255,255,255,.18);
  border-radius:18px;
  background:rgba(7,7,25,.45);
  backdrop-filter:blur(14px);
}
.holo-title span{font-size:.9rem;color:var(--muted)}
.holo-title strong{font-size:1.05rem}
.tub-machine{
  width:100%;
  display:block;
  min-height:420px;
  filter:drop-shadow(0 40px 55px rgba(0,0,0,.4));
}
.floor-grid path{
  stroke:rgba(24,246,255,.26);
  stroke-width:1;
  fill:none;
}
.scan-rings ellipse{
  fill:none;
  stroke:rgba(24,246,255,.2);
  stroke-width:2;
  transform-origin:380px 270px;
  animation:ringPulse 4s ease-in-out infinite;
}
.scan-rings ellipse:nth-child(2){animation-delay:.7s;stroke:rgba(255,79,216,.22)}
.scan-rings ellipse:nth-child(3){animation-delay:1.4s;stroke:rgba(185,255,79,.2)}
@keyframes ringPulse{50%{transform:scale(1.04);opacity:.45}}

.tub-shadow{fill:rgba(0,0,0,.36)}
.tub-shell{fill:rgba(255,255,255,.18);stroke:rgba(255,255,255,.55);stroke-width:3}
.tub-inner{stroke:rgba(255,255,255,.35);stroke-width:2}
.old-surface{fill:url(#oldTub);opacity:1;transition:opacity .7s ease}
.new-surface{fill:url(#newTub);opacity:0;transition:opacity .8s ease}
.rim-highlight{fill:none;stroke:#fff;stroke-width:5;stroke-linecap:round;opacity:.65}

.stains path{fill:#4c2820;opacity:.75;transition:.6s}
.prep-tools,.spray-system,.cure-light,.shine-lines,.logo-lockup{opacity:0;transition:opacity .6s,transform .6s}
.mask-tape{fill:rgba(255,180,94,.78)}
.sander rect{fill:#10172f;stroke:var(--peach);stroke-width:3}
.sander path{stroke:#fff;stroke-width:4;stroke-linecap:round}
.sander circle,.repair-sparks circle{fill:var(--lime)}
.repair-sparks circle{filter:url(#glow);animation:spark .9s ease-in-out infinite alternate}
@keyframes spark{to{transform:translateY(-8px);opacity:.35}}
.hose{fill:none;stroke:#262d5d;stroke-width:10;stroke-linecap:round}
.spray-gun path{fill:#e9f8ff;stroke:#151d3d;stroke-width:3}
.spray-gun circle{fill:var(--rose)}
.spray-cone{fill:url(#sprayGlow);opacity:.5;filter:url(#glow)}
.mist circle{fill:#fff;filter:url(#glow);animation:mist 1.8s ease-in-out infinite alternate}
@keyframes mist{to{transform:translate(-30px,22px);opacity:.3}}
.cure-light path{fill:rgba(185,255,79,.12);stroke:rgba(185,255,79,.55);stroke-width:2}
.cure-light circle{fill:var(--lime)}
.shine-lines path{stroke:#fff;stroke-width:7;stroke-linecap:round;filter:url(#glow);animation:shine 1.8s ease-in-out infinite alternate}
@keyframes shine{to{opacity:.25;transform:translateX(14px)}}
.logo-lockup circle{fill:rgba(7,7,25,.75);stroke:url(#sprayGlow);stroke-width:3}
.logo-lockup text{fill:#fff;font-size:24px;font-weight:900;font-family:Arial,sans-serif}
.logo-lockup text:last-child{font-size:14px;fill:var(--aqua)}

body.stage-1 .prep-tools{opacity:1}
body.stage-1 .stains path{opacity:.35}
body.stage-2 .prep-tools{opacity:.65}
body.stage-2 .spray-system{opacity:1;transform:translateX(-10px)}
body.stage-2 .new-surface{opacity:.45}
body.stage-2 .old-surface{opacity:.65}
body.stage-3 .cure-light{opacity:1}
body.stage-3 .new-surface{opacity:.75}
body.stage-3 .old-surface{opacity:.25}
body.stage-3 .stains path{opacity:.12}
body.stage-4 .new-surface{opacity:1}
body.stage-4 .old-surface,body.stage-4 .stains{opacity:0}
body.stage-4 .shine-lines,body.stage-4 .logo-lockup{opacity:1}
body.stage-4 .prep-tools,body.stage-4 .spray-system{opacity:0}

.process-chips{
  display:flex;
  gap:.5rem;
  flex-wrap:wrap;
  padding:0 1.1rem 1.2rem;
  justify-content:center;
}
.process-chips button{
  cursor:pointer;
  border:1px solid rgba(255,255,255,.18);
  color:var(--muted);
  background:rgba(255,255,255,.07);
  border-radius:999px;
  padding:.65rem .85rem;
  font-weight:900;
}
.process-chips button.active{
  color:#07101f;
  background:linear-gradient(135deg,var(--aqua),var(--lime));
  box-shadow:0 0 22px rgba(24,246,255,.25);
}

.process-strip{
  max-width:var(--max);
  margin:0 auto 2rem;
  padding:1rem;
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:1rem;
}
.stage-card{
  min-height:220px;
  border:1px solid var(--line);
  border-radius:24px;
  padding:1.2rem;
  background:linear-gradient(145deg,rgba(255,255,255,.12),rgba(255,255,255,.045));
  box-shadow:0 20px 45px rgba(0,0,0,.2);
  transform:translateY(20px);
  opacity:0;
  transition:.7s ease;
}
.stage-card.in-view{opacity:1;transform:translateY(0)}
.stage-card span{color:var(--aqua);font-weight:900;text-transform:uppercase;font-size:.78rem;letter-spacing:.12em}
.stage-card h2{font-size:1.12rem;line-height:1.2;margin:.7rem 0}
.stage-card p{color:var(--muted);margin:0;font-size:.95rem}

.content-shell{
  max-width:var(--max);
  margin:auto;
  padding:2rem 1rem 4rem;
  display:grid;
  grid-template-columns:280px minmax(0,1fr);
  gap:1.4rem;
  align-items:start;
}
.toc-wrap{
  position:sticky;
  top:92px;
  border:1px solid var(--line);
  border-radius:24px;
  background:rgba(255,255,255,.075);
  backdrop-filter:blur(18px);
  box-shadow:0 20px 60px rgba(0,0,0,.22);
  overflow:hidden;
}
.toc-toggle{
  width:100%;
  border:0;
  color:#fff;
  background:linear-gradient(135deg,rgba(24,246,255,.18),rgba(255,79,216,.16));
  padding:1rem;
  text-align:left;
  font-weight:950;
  cursor:pointer;
}
.toc{display:grid;padding:.6rem}
.toc a{
  text-decoration:none;
  color:var(--muted);
  padding:.68rem .75rem;
  border-radius:14px;
  font-weight:800;
  font-size:.92rem;
}
.toc a:hover,.toc a.active{color:#fff;background:rgba(24,246,255,.14)}

.blog-card{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:
    linear-gradient(145deg,rgba(255,255,255,.13),rgba(255,255,255,.055)),
    radial-gradient(circle at 95% 4%,rgba(255,180,94,.13),transparent 28rem);
  backdrop-filter:blur(18px);
  box-shadow:var(--shadow);
  padding:clamp(1.1rem,4vw,3rem);
  overflow:hidden;
}
.blog-card h2{
  margin:2.4rem 0 .8rem;
  font-size:clamp(1.6rem,3vw,2.35rem);
  line-height:1.12;
  letter-spacing:-.035em;
}
.blog-card h3{
  margin:1.55rem 0 .45rem;
  font-size:1.28rem;
  line-height:1.2;
  color:#fff;
}
.blog-card p,.blog-card li{color:#d4def7;font-size:1.04rem}
.blog-card a{
  color:#dff;
  text-decoration-thickness:2px;
  text-underline-offset:4px;
}
.blog-card ul{padding-left:1.25rem}
.blog-card li{margin:.42rem 0}
.key-box{
  margin:2rem 0;
  padding:1.25rem;
  border-radius:24px;
  border:1px solid rgba(185,255,79,.28);
  background:linear-gradient(135deg,rgba(185,255,79,.12),rgba(24,246,255,.08));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.18);
}

.business-cta{
  position:relative;
  margin-top:3rem;
  padding:1.4rem;
  border-radius:28px;
  border:1px solid rgba(255,255,255,.22);
  background:
    linear-gradient(135deg,rgba(24,246,255,.13),rgba(255,79,216,.12)),
    rgba(255,255,255,.06);
  box-shadow:0 30px 80px rgba(0,0,0,.32);
  overflow:hidden;
}
.cta-glow{
  position:absolute;
  inset:auto -20% -50% -20%;
  height:160px;
  background:radial-gradient(circle,rgba(24,246,255,.35),transparent 70%);
  filter:blur(18px);
}
.business-cta h2{margin-top:0}
.business-cta dl{position:relative;display:grid;gap:.8rem;margin:0}
.business-cta div{
  display:grid;
  grid-template-columns:110px minmax(0,1fr);
  gap:1rem;
  padding:.8rem;
  border-radius:16px;
  background:rgba(255,255,255,.06);
}
.business-cta dt{color:var(--aqua);font-weight:950}
.business-cta dd{margin:0;word-break:break-word;color:#fff}

.social-section{margin-top:2rem}
.social-links{display:flex;gap:.8rem;flex-wrap:wrap}
.social-links a{
  width:52px;
  height:52px;
  display:grid;
  place-items:center;
  border-radius:18px;
  border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.08);
  transition:.25s ease;
}
.social-links a:hover{
  transform:translateY(-5px) rotate(-2deg);
  box-shadow:0 0 24px rgba(24,246,255,.3);
  background:linear-gradient(135deg,rgba(24,246,255,.22),rgba(255,79,216,.18));
}
.social-links svg{width:26px;height:26px;fill:#fff}

.site-footer{
  border-top:1px solid var(--line);
  text-align:center;
  padding:2rem 1rem;
  color:var(--muted);
  background:rgba(0,0,0,.16);
}

@media (max-width:980px){
  .hero{grid-template-columns:1fr;padding-top:3rem}
  .hero h1{max-width:14ch}
  .process-strip{grid-template-columns:1fr 1fr}
  .content-shell{grid-template-columns:1fr}
  .toc-wrap{position:relative;top:auto}
  .toc{display:none}
  .toc.open{display:grid}
}
@media (max-width:640px){
  .top-nav{align-items:flex-start}
  .nav-links{justify-content:flex-end}
  .nav-links a:not(.nav-cta){display:none}
  .hero{padding-top:2rem}
  .tub-machine{min-height:330px}
  .process-strip{grid-template-columns:1fr}
  .business-cta div{grid-template-columns:1fr;gap:.2rem}
  .holo-title{position:relative;left:auto;top:auto;margin:1rem 1rem 0}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.01ms!important;
    animation-iteration-count:1!important;
    scroll-behavior:auto!important;
    transition-duration:.01ms!important;
  }
}