:root{
  --ink:#f4f8ff;
  --muted:#a8c4e8;
  --bg:#0a0e27;
  --bg2:#151938;
  --panel:rgba(255,255,255,.1);
  --panel2:rgba(255,255,255,.15);
  --line:rgba(255,255,255,.2);
  --teal:#00d4ff;
  --magenta:#ff2d7b;
  --amber:#ffa500;
  --lavender:#c4b5ff;
  --deep:#0d1135;
  --shadow:0 30px 95px rgba(0,0,0,.5);
  --radius:26px;
  --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 15% 10%,rgba(0,212,255,.28),transparent 30rem),
    radial-gradient(circle at 85% 15%,rgba(255,45,123,.22),transparent 32rem),
    radial-gradient(circle at 50% 75%,rgba(255,165,0,.14),transparent 35rem),
    linear-gradient(135deg,#0a0e27 0%,#151938 50%,#0d1135 100%);
  overflow-x:hidden;
  line-height:1.7;
}

a{color:inherit}
a:focus-visible,button:focus-visible{
  outline:3px solid var(--amber);
  outline-offset:4px;
  border-radius:12px;
}
.skip-link{
  position:absolute;
  left:-999px;
  top:1rem;
  z-index:999;
  padding:.8rem 1rem;
  background:#fff;
  color:#0a0e27;
  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:26rem;
  aspect-ratio:1;
  border-radius:50%;
  filter:blur(30px);
  opacity:.5;
  mix-blend-mode:screen;
  animation:floatOrb 20s ease-in-out infinite alternate;
}
.orb-a{background:#00d4ff;left:-8rem;top:10rem}
.orb-b{background:#ff2d7b;right:-9rem;top:2rem;animation-duration:24s}
.orb-c{background:#ffa500;left:45%;bottom:-12rem;animation-duration:28s}
.grid-veil{
  position:absolute;
  inset:-12%;
  background-image:
    linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:62px 62px;
  transform:perspective(850px) rotateX(64deg) translateY(-18%);
  transform-origin:center;
  opacity:.3;
  animation:gridMove 18s linear infinite;
}
@keyframes floatOrb{to{transform:translate3d(7rem,-4rem,0) scale(1.15)}}
@keyframes gridMove{to{background-position:0 124px,124px 0}}

.site-header{
  position:sticky;
  top:0;
  z-index:50;
  backdrop-filter:blur(20px);
  background:linear-gradient(90deg,rgba(10,14,39,.85),rgba(21,25,56,.65));
  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:44px;
  height:44px;
  display:grid;
  place-items:center;
  border-radius:15px;
  color:#0a0e27;
  background:linear-gradient(135deg,var(--teal),var(--amber) 50%,var(--magenta));
  box-shadow:0 0 28px rgba(0,212,255,.45);
}
.nav-links{display:flex;align-items:center;gap:.4rem;flex-wrap:wrap}
.nav-links a{
  text-decoration:none;
  padding:.7rem .95rem;
  border-radius:999px;
  color:var(--muted);
  font-weight:750;
  font-size:.95rem;
}
.nav-links a:hover{background:rgba(255,255,255,.12);color:#fff}
.nav-cta{
  color:#0a0e27!important;
  background:linear-gradient(135deg,var(--amber),var(--teal));
  box-shadow:0 0 20px rgba(255,165,0,.3);
}

.hero{
  min-height:calc(100vh - 78px);
  max-width:var(--max);
  margin:auto;
  padding:5rem 1rem 3rem;
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(320px,1.15fr);
  align-items:center;
  gap:2.5rem;
}
.eyebrow,.article-kicker{
  display:inline-flex;
  width:max-content;
  max-width:100%;
  padding:.5rem .82rem;
  border:1px solid rgba(0,212,255,.4);
  border-radius:999px;
  background:rgba(0,212,255,.1);
  color:#c8f0ff;
  font-weight:800;
  letter-spacing:.08em;
  text-transform:uppercase;
  font-size:.8rem;
}
.hero h1{
  margin:1rem 0;
  font-size:clamp(2.6rem,7.2vw,6.3rem);
  line-height:.95;
  letter-spacing:-.08em;
  max-width:12ch;
  text-shadow:0 0 45px rgba(0,212,255,.15);
}
.hero-lede{
  max-width:62ch;
  color:var(--muted);
  font-size:clamp(1.08rem,2.1vw,1.28rem);
}
.hero-actions{display:flex;gap:.85rem;flex-wrap:wrap;margin-top:1.7rem}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:50px;
  padding:.9rem 1.15rem;
  border-radius:999px;
  text-decoration:none;
  font-weight:900;
  border:1px solid var(--line);
}
.btn.primary{
  color:#0a0e27;
  background:linear-gradient(135deg,var(--teal),var(--amber) 52%,var(--magenta));
  box-shadow:0 16px 42px rgba(0,212,255,.2),0 0 26px rgba(255,165,0,.2);
}
.btn.ghost{background:rgba(255,255,255,.1);color:#fff}

.hero-stage{perspective:1250px}
.depth-card{
  position:relative;
  border:1px solid rgba(255,255,255,.22);
  border-radius:38px;
  background:
    linear-gradient(135deg,rgba(255,255,255,.18),rgba(255,255,255,.05)),
    radial-gradient(circle at 22% 0%,rgba(0,212,255,.26),transparent 44%),
    radial-gradient(circle at 78% 20%,rgba(255,45,123,.24),transparent 46%);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.28);
  backdrop-filter:blur(22px);
  overflow:hidden;
  transform-style:preserve-3d;
  transition:transform .2s ease;
}
.depth-card:before{
  content:"";
  position:absolute;
  inset:-2px;
  background:conic-gradient(from 130deg,transparent,var(--teal),transparent,var(--magenta),transparent,var(--amber),transparent);
  opacity:.24;
  animation:borderSpin 9s linear infinite;
}
.depth-card>*{position:relative}
@keyframes borderSpin{to{transform:rotate(1turn)}}
.holo-title{
  position:absolute;
  left:1.4rem;
  top:1.4rem;
  z-index:4;
  display:grid;
  gap:.18rem;
  padding:.85rem 1.1rem;
  border:1px solid rgba(255,255,255,.2);
  border-radius:20px;
  background:rgba(10,14,39,.5);
  backdrop-filter:blur(16px);
}
.holo-title span{font-size:.92rem;color:var(--muted)}
.holo-title strong{font-size:1.08rem}
.shower-machine{
  width:100%;
  display:block;
  min-height:440px;
  filter:drop-shadow(0 42px 60px rgba(0,0,0,.45));
}
.floor-grid path{
  stroke:rgba(0,212,255,.28);
  stroke-width:1;
  fill:none;
}
.scan-rings ellipse{
  fill:none;
  stroke:rgba(0,212,255,.22);
  stroke-width:2;
  transform-origin:360px 280px;
  animation:ringPulse 4.5s ease-in-out infinite;
}
.scan-rings ellipse:nth-child(2){animation-delay:.8s;stroke:rgba(255,45,123,.24)}
.scan-rings ellipse:nth-child(3){animation-delay:1.6s;stroke:rgba(255,165,0,.22)}
@keyframes ringPulse{50%{transform:scale(1.05);opacity:.5}}

.shower-back{fill:url(#showerPanel);stroke:rgba(255,255,255,.4);stroke-width:2}
.shower-left,.shower-right{fill:rgba(255,255,255,.2);stroke:rgba(255,255,255,.5);stroke-width:2}
.shower-base{fill:rgba(255,255,255,.15);stroke:rgba(255,255,255,.4);stroke-width:2}
.shower-head{fill:rgba(255,255,255,.25);stroke:rgba(255,255,255,.6);stroke-width:3}
.shower-arm{fill:none;stroke:rgba(255,255,255,.5);stroke-width:6;stroke-linecap:round}

.water-droplets circle{
  fill:rgba(0,212,255,.6);
  filter:url(#glow);
  animation:droplet 2.2s ease-in-out infinite alternate;
}
.water-droplets circle:nth-child(2n){animation-delay:.6s}
.water-droplets circle:nth-child(3n){animation-delay:1.1s}
@keyframes droplet{to{transform:translateY(25px);opacity:.2}}

.crack-line{fill:none;stroke:#8b4513;stroke-width:4;stroke-linecap:round;opacity:.8;transition:.7s}
.crack-glow{fill:none;stroke:url(#crackGlow);stroke-width:6;stroke-linecap:round;opacity:.9;filter:url(#glow);transition:.7s}

.repair-tools,.cure-system,.finish-shine,.logo-lockup{opacity:0;transition:opacity .7s,transform .7s}
.mask-tape{fill:rgba(255,165,0,.8)}
.filler-tube rect{fill:#1a2040;stroke:var(--teal);stroke-width:3}
.filler-tube path{stroke:#fff;stroke-width:5;stroke-linecap:round}
.filler-tube circle{fill:var(--magenta)}
.filler-flow path{fill:none;stroke:url(#repairFill);stroke-width:5;stroke-linecap:round;filter:url(#glow)}
.filler-flow circle{fill:#fff;filter:url(#glow);animation:flow 2s ease-in-out infinite alternate}
@keyframes flow{to{transform:translate(25px,-18px);opacity:.4}}
.sander-tool rect{fill:#151d3a;stroke:var(--amber);stroke-width:3}
.sander-tool path{stroke:#fff;stroke-width:5;stroke-linecap:round}
.sander-tool circle{fill:var(--teal)}

.cure-beam{fill:url(#cureBeam);opacity:.6;filter:url(#glow);animation:curePulse 2.8s ease-in-out infinite}
@keyframes curePulse{50%{opacity:.9;transform:scale(1.08)}}
.cure-core{fill:var(--amber);filter:url(#glow);animation:coreGlow 2.8s ease-in-out infinite}
@keyframes coreGlow{50%{r:28px;opacity:.7}}

.finish-shine path{stroke:#fff;stroke-width:8;stroke-linecap:round;filter:url(#glow);animation:shine 2s ease-in-out infinite alternate}
@keyframes shine{to{opacity:.3;transform:translateX(16px)}}
.logo-lockup circle{fill:rgba(10,14,39,.8);stroke:url(#crackGlow);stroke-width:3}
.logo-lockup text{fill:#fff;font-size:26px;font-weight:900;font-family:Arial,sans-serif}
.logo-lockup text:last-child{font-size:15px;fill:var(--teal)}

body.stage-1 .repair-tools{opacity:1}
body.stage-1 .crack-line{opacity:.5}
body.stage-2 .repair-tools{opacity:.7}
body.stage-2 .filler-flow{opacity:1;transform:translateY(-8px)}
body.stage-2 .crack-line{opacity:.3}
body.stage-3 .cure-system{opacity:1}
body.stage-3 .crack-line{opacity:.15}
body.stage-4 .crack-line,body.stage-4 .crack-glow{opacity:0}
body.stage-4 .finish-shine,body.stage-4 .logo-lockup{opacity:1}
body.stage-4 .repair-tools,body.stage-4 .cure-system{opacity:0}

.process-chips{
  display:flex;
  gap:.55rem;
  flex-wrap:wrap;
  padding:0 1.2rem 1.3rem;
  justify-content:center;
}
.process-chips button{
  cursor:pointer;
  border:1px solid rgba(255,255,255,.2);
  color:var(--muted);
  background:rgba(255,255,255,.08);
  border-radius:999px;
  padding:.7rem .9rem;
  font-weight:900;
}
.process-chips button.active{
  color:#0a0e27;
  background:linear-gradient(135deg,var(--teal),var(--amber));
  box-shadow:0 0 24px rgba(0,212,255,.3);
}

.process-strip{
  max-width:var(--max);
  margin:0 auto 2rem;
  padding:1rem;
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:1.1rem;
}
.stage-card{
  min-height:230px;
  border:1px solid var(--line);
  border-radius:26px;
  padding:1.3rem;
  background:linear-gradient(145deg,rgba(255,255,255,.14),rgba(255,255,255,.05));
  box-shadow:0 22px 50px rgba(0,0,0,.22);
  transform:translateY(22px);
  opacity:0;
  transition:.8s ease;
}
.stage-card.in-view{opacity:1;transform:translateY(0)}
.stage-card span{color:var(--teal);font-weight:900;text-transform:uppercase;font-size:.8rem;letter-spacing:.14em}
.stage-card h2{font-size:1.15rem;line-height:1.25;margin:.75rem 0}
.stage-card p{color:var(--muted);margin:0;font-size:.98rem}

.content-shell{
  max-width:var(--max);
  margin:auto;
  padding:2rem 1rem 4rem;
  display:grid;
  grid-template-columns:285px minmax(0,1fr);
  gap:1.5rem;
  align-items:start;
}
.toc-wrap{
  position:sticky;
  top:95px;
  border:1px solid var(--line);
  border-radius:26px;
  background:rgba(255,255,255,.08);
  backdrop-filter:blur(20px);
  box-shadow:0 22px 65px rgba(0,0,0,.25);
  overflow:hidden;
}
.toc-toggle{
  width:100%;
  border:0;
  color:#fff;
  background:linear-gradient(135deg,rgba(0,212,255,.2),rgba(255,45,123,.18));
  padding:1.05rem;
  text-align:left;
  font-weight:950;
  cursor:pointer;
}
.toc{display:grid;padding:.65rem}
.toc a{
  text-decoration:none;
  color:var(--muted);
  padding:.72rem .8rem;
  border-radius:15px;
  font-weight:800;
  font-size:.95rem;
}
.toc a:hover,.toc a.active{color:#fff;background:rgba(0,212,255,.16)}

.blog-card{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:
    linear-gradient(145deg,rgba(255,255,255,.15),rgba(255,255,255,.06)),
    radial-gradient(circle at 98% 6%,rgba(255,165,0,.15),transparent 30rem);
  backdrop-filter:blur(20px);
  box-shadow:var(--shadow);
  padding:clamp(1.2rem,4.2vw,3.2rem);
  overflow:hidden;
}
.blog-card h2{
  margin:2.5rem 0 .85rem;
  font-size:clamp(1.65rem,3.1vw,2.4rem);
  line-height:1.15;
  letter-spacing:-.04em;
}
.blog-card h3{
  margin:1.6rem 0 .5rem;
  font-size:1.3rem;
  line-height:1.22;
  color:#fff;
}
.blog-card p,.blog-card li{color:#d8e4f9;font-size:1.06rem}
.blog-card a{
  color:#e8f4ff;
  text-decoration-thickness:2px;
  text-underline-offset:4px;
}
.blog-card ul{padding-left:1.3rem}
.blog-card li{margin:.45rem 0}
.key-box{
  margin:2.2rem 0;
  padding:1.3rem;
  border-radius:26px;
  border:1px solid rgba(255,165,0,.32);
  background:linear-gradient(135deg,rgba(255,165,0,.14),rgba(0,212,255,.1));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.2);
}

.business-cta{
  position:relative;
  margin-top:3rem;
  padding:1.5rem;
  border-radius:30px;
  border:1px solid rgba(255,255,255,.24);
  background:
    linear-gradient(135deg,rgba(0,212,255,.15),rgba(255,45,123,.14)),
    rgba(255,255,255,.07);
  box-shadow:0 32px 85px rgba(0,0,0,.35);
  overflow:hidden;
}
.cta-glow{
  position:absolute;
  inset:auto -22% -55% -22%;
  height:170px;
  background:radial-gradient(circle,rgba(0,212,255,.4),transparent 75%);
  filter:blur(20px);
}
.business-cta h2{margin-top:0}
.business-cta dl{position:relative;display:grid;gap:.85rem;margin:0}
.business-cta div{
  display:grid;
  grid-template-columns:115px minmax(0,1fr);
  gap:1.1rem;
  padding:.85rem;
  border-radius:18px;
  background:rgba(255,255,255,.07);
}
.business-cta dt{color:var(--teal);font-weight:950}
.business-cta dd{margin:0;word-break:break-word;color:#fff}

.social-section{margin-top:2rem}
.social-links{display:flex;gap:.85rem;flex-wrap:wrap}
.social-links a{
  width:54px;
  height:54px;
  display:grid;
  place-items:center;
  border-radius:20px;
  border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.1);
  transition:.3s ease;
}
.social-links a:hover{
  transform:translateY(-6px) rotate(-2deg);
  box-shadow:0 0 26px rgba(0,212,255,.35);
  background:linear-gradient(135deg,rgba(0,212,255,.25),rgba(255,45,123,.2));
}
.social-links svg{width:28px;height:28px;fill:#fff}

.site-footer{
  border-top:1px solid var(--line);
  text-align:center;
  padding:2rem 1rem;
  color:var(--muted);
  background:rgba(0,0,0,.18);
}

@media (max-width:980px){
  .hero{grid-template-columns:1fr;padding-top:3rem}
  .hero h1{max-width:15ch}
  .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}
  .shower-machine{min-height:350px}
  .process-strip{grid-template-columns:1fr}
  .business-cta div{grid-template-columns:1fr;gap:.25rem}
  .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;
  }
}