:root{
  --bg:#070A1F;
  --bg-2:#140A2E;
  --bg-3:#0A1A24;
  --panel:rgba(255,255,255,0.04);
  --panel-2:rgba(255,255,255,0.08);
  --stroke:rgba(255,255,255,0.1);
  --text:#E6E8F2;
  --muted:#9AA3BD;
  --teal:#14B8A6;
  --teal-2:#5EEAD4;
  --gold:#F59E0B;
  --gold-2:#FDE68A;
  --violet:#A855F7;
  --violet-2:#E9D5FF;
  --rose:#FB7185;
  --mint:#34D399;
  --grad:linear-gradient(135deg,#14B8A6 0%,#F59E0B 50%,#A855F7 100%);
  --grad-soft:linear-gradient(135deg,rgba(20,184,166,.18),rgba(245,158,11,.18),rgba(168,85,247,.18));
  --glow-t:0 0 30px rgba(20,184,166,.5),0 0 60px rgba(20,184,166,.25);
  --glow-g:0 0 30px rgba(245,158,11,.5),0 0 60px rgba(245,158,11,.25);
  --glow-v:0 0 30px rgba(168,85,247,.5),0 0 60px rgba(168,85,247,.25);
  --r:18px;
  --r-lg:28px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  overflow-x:hidden;
  min-height:100vh;
  background-image:
    radial-gradient(circle at 10% 0%,rgba(20,184,166,.12),transparent 40%),
    radial-gradient(circle at 90% 20%,rgba(168,85,247,.15),transparent 40%),
    radial-gradient(circle at 50% 90%,rgba(245,158,11,.12),transparent 50%);
}
img{max-width:100%;display:block}
a{color:var(--teal-2);text-decoration:none;transition:.25s}
a:hover{color:var(--gold-2)}
a:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:4px}

.wrap{max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== BACKGROUND ===== */
.bg-grid{
  position:fixed;inset:0;z-index:-2;pointer-events:none;
  background-image:
    linear-gradient(rgba(94,234,212,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(94,234,212,.06) 1px,transparent 1px);
  background-size:60px 60px;
  mask-image:radial-gradient(circle at center,black 30%,transparent 80%);
  animation:gridDrift 30s linear infinite;
}
@keyframes gridDrift{from{background-position:0 0,0 0}to{background-position:60px 60px,60px 60px}}

.bg-orbs{position:fixed;inset:0;z-index:-1;pointer-events:none;overflow:hidden}
.bg-orbs span{
  position:absolute;border-radius:50%;filter:blur(80px);opacity:.55;
  animation:orbFloat 18s ease-in-out infinite;
}
.bg-orbs span:nth-child(1){width:420px;height:420px;background:#14B8A6;top:-10%;left:-5%;animation-delay:0s}
.bg-orbs span:nth-child(2){width:360px;height:360px;background:#A855F7;top:40%;right:-10%;animation-delay:-4s}
.bg-orbs span:nth-child(3){width:500px;height:500px;background:#F59E0B;bottom:-15%;left:30%;animation-delay:-8s;opacity:.35}
.bg-orbs span:nth-child(4){width:280px;height:280px;background:#FB7185;top:70%;left:-8%;animation-delay:-12s;opacity:.4}
.bg-orbs span:nth-child(5){width:340px;height:340px;background:#5EEAD4;top:10%;right:20%;animation-delay:-6s;opacity:.3}
@keyframes orbFloat{
  0%,100%{transform:translate(0,0) scale(1)}
  33%{transform:translate(40px,-30px) scale(1.1)}
  66%{transform:translate(-30px,40px) scale(.95)}
}

/* ===== HERO ===== */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;
  perspective:1200px;overflow:hidden;padding:80px 24px;
}
.hero-inner{
  position:relative;width:100%;max-width:1400px;
  transform-style:preserve-3d;
}
.hero-floor{
  position:absolute;inset:-20% -10% -10% -10%;
  transform:rotateX(62deg) translateZ(-100px);
  transform-style:preserve-3d;
  opacity:.9;
}
.floor-grid{
  position:absolute;inset:0;
  display:grid;grid-template-columns:repeat(14,1fr);grid-template-rows:repeat(10,1fr);gap:4px;
}
.plank{
  position:relative;border-radius:3px;
  background:linear-gradient(180deg,rgba(20,184,166,.08),rgba(245,158,11,.08));
  border:1px solid rgba(94,234,212,.15);
  transform:translateY(40px) scale(.9);opacity:0;
  animation:plankIn 1.2s ease-out forwards;
}
.plank::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(135deg,transparent,rgba(94,234,212,.2),transparent);
  opacity:0;animation:plankShine 4s ease-in-out infinite;
}
@keyframes plankIn{to{transform:translateY(0) scale(1);opacity:1}}
@keyframes plankShine{0%,100%{opacity:0}50%{opacity:1}}

.hero-tools{
  position:absolute;inset:0;pointer-events:none;
}
.tool{
  position:absolute;width:120px;height:80px;
  filter:drop-shadow(0 0 20px rgba(94,234,212,.4));
  animation:toolFloat 8s ease-in-out infinite;
}
.tool svg{width:100%;height:100%}
.tool-tape{top:15%;left:8%;animation-delay:-2s}
.tool-level{top:20%;right:10%;animation-delay:-4s}
.tool-trowel{bottom:25%;left:15%;animation-delay:-6s}
@keyframes toolFloat{
  0%,100%{transform:translateY(0) rotate(-5deg)}
  50%{transform:translateY(-20px) rotate(5deg)}
}

.hero-content{
  position:relative;z-index:2;text-align:center;
  max-width:900px;margin:0 auto;
}
.hero-badge{
  display:inline-block;padding:8px 18px;border-radius:100px;
  background:var(--panel);backdrop-filter:blur(10px);
  border:1px solid var(--stroke);
  font-size:.85rem;color:var(--teal-2);letter-spacing:.5px;
  margin-bottom:24px;
  animation:fadeUp .8s ease-out;
}
.hero-title{
  font-size:clamp(2.2rem,6vw,4.8rem);
  line-height:1.05;font-weight:800;letter-spacing:-.02em;
  margin-bottom:20px;
}
.glow-text{
  display:block;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  text-shadow:0 0 80px rgba(94,234,212,.3);
  animation:fadeUp 1s ease-out .2s backwards;
}
.hero-sub{
  display:block;color:var(--text);
  animation:fadeUp 1s ease-out .4s backwards;
}
.hero-lead{
  font-size:clamp(1rem,1.6vw,1.2rem);color:var(--muted);
  max-width:680px;margin:0 auto 36px;
  animation:fadeUp 1s ease-out .6s backwards;
}
.hero-cta{
  display:flex;gap:14px;justify-content:center;flex-wrap:wrap;
  animation:fadeUp 1s ease-out .8s backwards;
}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 28px;border-radius:100px;font-weight:600;
  font-size:.95rem;letter-spacing:.3px;cursor:pointer;
  transition:.3s cubic-bezier(.4,0,.2,1);border:none;
}
.btn-primary{
  background:var(--grad);color:#0A0A14;
  box-shadow:0 10px 30px rgba(20,184,166,.35),0 0 50px rgba(245,158,11,.2);
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 15px 40px rgba(20,184,166,.5),0 0 70px rgba(245,158,11,.4);color:#0A0A14}
.btn-ghost{
  background:var(--panel);backdrop-filter:blur(10px);color:var(--text);
  border:1px solid var(--stroke);
}
.btn-ghost:hover{background:var(--panel-2);border-color:var(--teal);transform:translateY(-3px)}

@keyframes fadeUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}

/* ===== PROCESS ===== */
.process{
  position:relative;padding:120px 0;
  background:linear-gradient(180deg,transparent,rgba(20,184,166,.04),transparent);
}
.section-head{text-align:center;max-width:700px;margin:0 auto 60px}
.eyebrow{
  display:inline-block;font-size:.8rem;letter-spacing:3px;text-transform:uppercase;
  color:var(--gold-2);margin-bottom:14px;font-weight:600;
}
.section-head h2{
  font-size:clamp(1.8rem,3.5vw,2.8rem);line-height:1.15;font-weight:800;
  margin-bottom:14px;letter-spacing:-.02em;
}
.section-head p{color:var(--muted);font-size:1.05rem}

.process-stages{
  display:grid;grid-template-columns:repeat(5,1fr);gap:20px;
  position:relative;z-index:2;
}
.stage{
  position:relative;padding:30px 22px;border-radius:var(--r);
  background:var(--panel);backdrop-filter:blur(14px);
  border:1px solid var(--stroke);
  transition:.5s cubic-bezier(.4,0,.2,1);
  transform:translateY(40px);opacity:0;
}
.stage.visible{transform:translateY(0);opacity:1}
.stage:hover{
  transform:translateY(-8px);
  border-color:var(--teal);
  box-shadow:0 20px 50px rgba(20,184,166,.2),0 0 0 1px rgba(94,234,212,.3);
}
.stage-icon{
  width:70px;height:70px;border-radius:20px;margin-bottom:18px;
  background:var(--grad-soft);
  display:flex;align-items:center;justify-content:center;
  position:relative;overflow:hidden;
  border:1px solid var(--stroke);
}
.stage-icon::before{
  content:"";position:absolute;inset:-50%;
  background:conic-gradient(from 0deg,transparent,rgba(94,234,212,.4),transparent 40%);
  animation:iconSpin 6s linear infinite;
}
@keyframes iconSpin{to{transform:rotate(360deg)}}
.stage-icon > div{
  position:relative;z-index:1;width:36px;height:36px;
}
.stage h3{font-size:1.15rem;margin-bottom:10px;color:var(--text)}
.stage p{font-size:.9rem;color:var(--muted);line-height:1.55}

/* Stage icons via CSS */
.icon-inspect{
  background:
    linear-gradient(45deg,transparent 48%,var(--gold) 48%,var(--gold) 52%,transparent 52%) center/100% 100%,
    radial-gradient(circle,rgba(251,113,133,.8) 15%,transparent 16%);
  background-repeat:no-repeat;
}
.icon-remove{
  background:
    linear-gradient(45deg,transparent 45%,var(--rose) 45%,var(--rose) 55%,transparent 55%),
    linear-gradient(-45deg,transparent 45%,var(--rose) 45%,var(--rose) 55%,transparent 55%);
}
.icon-level{
  background:
    linear-gradient(var(--teal-2),var(--teal-2)) center/70% 4px no-repeat,
    radial-gradient(circle at 50% 50%,var(--violet) 10%,transparent 11%);
}
.icon-install{
  background:
    linear-gradient(var(--gold-2),var(--gold-2)) center/60% 6px no-repeat,
    linear-gradient(var(--gold-2),var(--gold-2)) center/6px 60% no-repeat,
    radial-gradient(circle,var(--gold) 20%,transparent 21%);
}
.icon-finish{
  background:radial-gradient(circle,var(--teal-2) 25%,rgba(94,234,212,.4) 40%,transparent 55%);
}

.process-track{
  position:absolute;top:85px;left:10%;right:10%;height:2px;
  background:linear-gradient(90deg,var(--teal),var(--gold),var(--violet));
  opacity:.3;z-index:1;
}
.process-track span{
  display:block;height:100%;width:0;background:var(--grad);
  box-shadow:0 0 20px var(--teal);transition:width 2s ease-out;
}

/* ===== LAYOUT / TOC ===== */
.layout{
  display:grid;grid-template-columns:260px minmax(0,1fr);
  gap:48px;max-width:1200px;margin:0 auto;padding:60px 24px 100px;
  align-items:start;
}

.toc-wrap{position:sticky;top:24px;align-self:start}
.toc{
  background:var(--panel);backdrop-filter:blur(14px);
  border:1px solid var(--stroke);border-radius:var(--r);
  padding:22px;
}
.toc-toggle{display:none;width:100%;background:none;border:none;color:var(--text);font:inherit;cursor:pointer}
.toc-list{list-style:none;counter-reset:toc}
.toc-list li{counter-increment:toc;margin:4px 0}
.toc-list a{
  display:block;padding:8px 12px;border-radius:8px;
  font-size:.88rem;color:var(--muted);
  border-left:2px solid transparent;transition:.25s;
}
.toc-list a::before{content:counter(toc,decimal-leading-zero) "  ";color:var(--teal);font-weight:600}
.toc-list a:hover{color:var(--text);background:var(--panel-2)}
.toc-list a.active{color:var(--gold-2);border-left-color:var(--gold);background:var(--panel-2)}

/* ===== ARTICLE ===== */
.article{max-width:820px}
.article-meta{
  display:flex;gap:14px;flex-wrap:wrap;margin-bottom:20px;
  font-size:.82rem;color:var(--muted);
}
.article-meta span{padding:4px 12px;border-radius:100px;background:var(--panel);border:1px solid var(--stroke)}
.article-meta .cat{color:var(--gold-2);border-color:rgba(245,158,11,.3)}

.article h2{
  font-size:clamp(1.6rem,2.8vw,2.2rem);font-weight:800;
  margin:50px 0 18px;line-height:1.2;letter-spacing:-.01em;
  scroll-margin-top:30px;
}
.article h3{font-size:1.25rem;margin:30px 0 12px;color:var(--teal-2);font-weight:700}
.article p{margin-bottom:18px;color:#D0D5E4}
.article p.lead{font-size:1.1rem;color:var(--text);border-left:3px solid var(--gold);padding-left:18px;margin-bottom:28px}
.article a{color:var(--teal-2);border-bottom:1px dashed rgba(94,234,212,.4);padding-bottom:2px}
.article a:hover{color:var(--gold-2);border-bottom-color:var(--gold)}

.list{margin:18px 0 24px;padding-left:4px;list-style:none}
.list li{
  position:relative;padding:10px 14px 10px 42px;margin-bottom:8px;
  background:var(--panel);border-radius:10px;
  border:1px solid var(--stroke);font-size:.95rem;
  transition:.25s;
}
.list li:hover{border-color:var(--teal);transform:translateX(4px)}
.list li::before{
  content:"";position:absolute;left:14px;top:50%;transform:translateY(-50%);
  width:18px;height:18px;border-radius:50%;
  background:var(--grad);
  box-shadow:0 0 10px var(--teal);
}
.list li::after{
  content:"";position:absolute;left:18px;top:50%;transform:translateY(-50%) rotate(45deg);
  width:5px;height:10px;border-right:2px solid #070A1F;border-bottom:2px solid #070A1F;
}

/* ===== CTA ===== */
.cta-card{
  position:relative;margin-top:70px;padding:50px 36px;
  border-radius:var(--r-lg);overflow:hidden;
  background:var(--panel);backdrop-filter:blur(20px);
  border:1px solid var(--stroke);
  text-align:center;
}
.cta-glow{
  position:absolute;inset:-2px;border-radius:var(--r-lg);z-index:-1;
  background:var(--grad);filter:blur(30px);opacity:.4;
  animation:ctaPulse 4s ease-in-out infinite;
}
@keyframes ctaPulse{0%,100%{opacity:.4;transform:scale(1)}50%{opacity:.7;transform:scale(1.02)}}
.cta-card h3{
  font-size:clamp(1.4rem,2.4vw,2rem);margin-bottom:10px;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.cta-card > .cta-inner > p{color:var(--muted);margin-bottom:28px}
.cta-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;
  margin-bottom:28px;
}
.cta-item{
  display:flex;align-items:center;justify-content:center;gap:10px;
  padding:16px;border-radius:14px;
  background:var(--panel-2);border:1px solid var(--stroke);
  color:var(--text);font-size:.92rem;font-weight:500;
  transition:.3s;
}
.cta-item:hover{
  transform:translateY(-3px);border-color:var(--teal);color:var(--gold-2);
  box-shadow:0 10px 30px rgba(20,184,166,.25);
}
.cta-item svg{flex-shrink:0;color:var(--teal-2)}

.social{display:flex;justify-content:center;gap:16px;margin-top:10px}
.social a{
  width:46px;height:46px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:var(--panel-2);border:1px solid var(--stroke);
  color:var(--muted);transition:.3s;
}
.social a:hover{
  color:#fff;transform:translateY(-3px) scale(1.05);
  box-shadow:0 0 25px var(--teal);border-color:var(--teal);
  background:linear-gradient(135deg,rgba(20,184,166,.2),rgba(168,85,247,.2));
}
.social svg{width:20px;height:20px}

footer{
  text-align:center;padding:40px 24px 30px;color:var(--muted);font-size:.88rem;
  border-top:1px solid var(--stroke);
}
footer a{color:var(--teal-2)}

/* ===== RESPONSIVE ===== */
@media (max-width:960px){
  .layout{grid-template-columns:1fr;gap:30px;padding:40px 20px 60px}
  .toc-wrap{position:relative;top:0}
  .toc-toggle{display:flex;align-items:center;justify-content:space-between;padding:14px;font-weight:600;font-size:1rem}
  .toc-list{display:none;margin-top:14px;padding-top:14px;border-top:1px solid var(--stroke)}
  .toc.open .toc-list{display:block}
  .toc.open .toc-toggle svg{transform:rotate(180deg)}
  .toc-toggle svg{transition:.3s}
  .process-stages{grid-template-columns:repeat(2,1fr)}
  .process-track{display:none}
}
@media (max-width:560px){
  .process-stages{grid-template-columns:1fr}
  .hero{padding:60px 18px;min-height:auto}
  .hero-cta{flex-direction:column;align-items:stretch}
  .btn{justify-content:center}
  .cta-card{padding:36px 22px}
  .cta-grid{grid-template-columns:1fr}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
  .bg-grid,.bg-orbs span,.plank,.tool{animation:none !important}
}