:root{
  --bg:#0b1020;
  --panel:#121a2f;
  --panel-2:#17213a;
  --text:#eef4ff;
  --muted:#a8b5cf;
  --brand:#67e8f9;
  --brand-2:#8b5cf6;
  --line:rgba(255,255,255,.12);
  --shadow:0 24px 70px rgba(0,0,0,.35);
  --radius:24px;
}
:root.light{
  --bg:#f4f7fb;
  --panel:#ffffff;
  --panel-2:#eef4ff;
  --text:#101828;
  --muted:#526071;
  --brand:#0891b2;
  --brand-2:#7c3aed;
  --line:rgba(15,23,42,.12);
  --shadow:0 22px 60px rgba(15,23,42,.12);
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:Inter,Segoe UI,Arial,sans-serif;
  background:
    radial-gradient(circle at top left, rgba(103,232,249,.16), transparent 34rem),
    radial-gradient(circle at top right, rgba(139,92,246,.18), transparent 30rem),
    var(--bg);
  color:var(--text);
}
a{color:inherit;text-decoration:none}
.app{display:grid;grid-template-columns:290px 1fr;min-height:100vh}
.sidebar{
  position:sticky;top:0;height:100vh;padding:24px;border-right:1px solid var(--line);
  background:rgba(18,26,47,.72);backdrop-filter:blur(18px);overflow:auto
}
.light .sidebar{background:rgba(255,255,255,.78)}
.logo{display:flex;align-items:center;gap:12px;margin-bottom:28px}
.logo-mark{width:44px;height:44px;border-radius:15px;background:linear-gradient(135deg,var(--brand),var(--brand-2));display:grid;place-items:center;box-shadow:var(--shadow);font-weight:900;color:white}
.logo strong{font-size:1.2rem}
.logo span{display:block;color:var(--muted);font-size:.86rem;margin-top:2px}
.nav{display:grid;gap:8px}
.nav a{padding:12px 14px;border-radius:15px;color:var(--muted);transition:.2s}
.nav a:hover,.nav a.active{background:linear-gradient(135deg,rgba(103,232,249,.14),rgba(139,92,246,.14));color:var(--text)}
.main{min-width:0}
.topbar{
  position:sticky;top:0;z-index:5;display:flex;gap:14px;align-items:center;justify-content:space-between;
  padding:18px 28px;border-bottom:1px solid var(--line);background:rgba(11,16,32,.62);backdrop-filter:blur(18px)
}
.light .topbar{background:rgba(244,247,251,.78)}
.search{flex:1;max-width:620px;display:flex;align-items:center;gap:10px;background:var(--panel);border:1px solid var(--line);border-radius:999px;padding:12px 16px;color:var(--muted)}
.search input{width:100%;border:0;outline:0;background:transparent;color:var(--text);font:inherit}
.icon-btn{border:1px solid var(--line);background:var(--panel);color:var(--text);border-radius:999px;padding:11px 14px;cursor:pointer}
.mobile-menu{display:none}
.content{padding:34px 28px 60px;max-width:1180px;margin:0 auto}
.hero{
  position:relative;overflow:hidden;border:1px solid var(--line);border-radius:32px;padding:46px;
  background:linear-gradient(135deg,rgba(103,232,249,.16),rgba(139,92,246,.16)),var(--panel);
  box-shadow:var(--shadow)
}
.eyebrow{text-transform:uppercase;letter-spacing:.16em;color:var(--brand);font-weight:800;font-size:.78rem}
.hero h1{font-size:clamp(2.25rem,5vw,4.9rem);line-height:.95;margin:12px 0 16px}
.hero p{max-width:750px;color:var(--muted);font-size:1.15rem;line-height:1.7}
.hero-visual{position:absolute;right:34px;bottom:30px;width:190px;height:150px;border:1px solid var(--line);border-radius:28px;background:rgba(255,255,255,.07);display:grid;place-items:center}
.printer{width:120px;height:92px;border:4px solid var(--brand);border-radius:16px;position:relative}
.printer:before{content:"";position:absolute;left:22px;right:22px;top:20px;height:4px;background:var(--brand)}
.printer:after{content:"";position:absolute;left:42px;bottom:15px;width:34px;height:28px;border-radius:8px;background:linear-gradient(135deg,var(--brand),var(--brand-2))}
.section{margin-top:34px}
.section-head{margin-bottom:18px}
.section h2,.panel h2,.cta h2{font-size:2rem;margin:8px 0 12px}
.grid.two{display:grid;grid-template-columns:1.2fr .8fr;gap:20px;margin-top:24px}
.panel,.topic-card,.cta,.tip,.comparison article,.timeline article,.project-grid article,.accessory{
  border:1px solid var(--line);background:var(--panel);border-radius:var(--radius);box-shadow:var(--shadow)
}
.panel{padding:28px}
.reading p{font-size:1.08rem;line-height:1.85;color:var(--muted)}
.cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-top:20px}
.topic-card{padding:24px;transition:.2s;min-height:180px}
.topic-card:hover{transform:translateY(-4px);border-color:rgba(103,232,249,.45)}
.topic-card span{display:inline-grid;place-items:center;min-width:48px;height:48px;border-radius:16px;background:linear-gradient(135deg,rgba(103,232,249,.18),rgba(139,92,246,.18));font-weight:900;color:var(--brand);padding:0 8px}
.topic-card h3{margin:18px 0 8px}
.topic-card p,.panel p,.tip,.comparison p,.timeline p,.accessory p{color:var(--muted);line-height:1.65}
.action-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px}
.btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);background:var(--panel-2);padding:13px 18px;border-radius:999px;font-weight:800}
.btn.primary{border:0;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:white}
.stat-card{display:grid;gap:14px}
.stat{display:flex;align-items:center;gap:14px;padding:14px;border-radius:18px;background:var(--panel-2)}
.stat strong{font-size:1.4rem;color:var(--brand)}
.cta{margin-top:34px;padding:30px;display:flex;justify-content:space-between;align-items:center;gap:20px;background:linear-gradient(135deg,rgba(103,232,249,.12),rgba(139,92,246,.12)),var(--panel)}
.tip{padding:22px;margin-top:22px;background:linear-gradient(135deg,rgba(103,232,249,.1),rgba(139,92,246,.1)),var(--panel)}
.tabs .tab-buttons,.filter-buttons{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:22px}
.tab-btn,.filter-btn{border:1px solid var(--line);background:var(--panel-2);color:var(--text);border-radius:999px;padding:10px 15px;cursor:pointer;font-weight:800}
.tab-btn.active,.filter-btn.active{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:white;border:0}
.tab-panel{display:none}
.tab-panel.active{display:block}
.comparison{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:20px}
.comparison article{padding:24px}
.timeline{display:grid;gap:18px;margin-top:20px}
.timeline article{padding:24px;display:grid;grid-template-columns:56px 1fr;column-gap:16px}
.timeline span{grid-row:span 2;width:50px;height:50px;border-radius:16px;background:linear-gradient(135deg,var(--brand),var(--brand-2));display:grid;place-items:center;color:white;font-weight:900}
.check-list{padding-left:20px;color:var(--muted);line-height:2}
.accordion-btn{width:100%;padding:18px;border:0;border-bottom:1px solid var(--line);background:transparent;color:var(--text);font:inherit;font-weight:900;text-align:left;cursor:pointer}
.accordion-content{display:none;padding:0 18px 18px;color:var(--muted)}
.accordion-content.open{display:block}
.accessory-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.accessory{padding:20px}
.accessory.hide{display:none}
.check-progress{margin:18px 0;color:var(--muted)}
.check-progress div{height:12px;border-radius:999px;background:var(--panel-2);overflow:hidden;margin-top:10px}
.check-progress b{display:block;height:100%;width:0%;background:linear-gradient(135deg,var(--brand),var(--brand-2));transition:.2s}
.starter-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;padding:0;list-style:none}
.starter-list li{background:var(--panel-2);border:1px solid var(--line);padding:13px;border-radius:14px}
.project-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;margin-top:20px}
.project-grid article{padding:22px;text-align:center;font-weight:900}
.footer{padding:28px;color:var(--muted);text-align:center;border-top:1px solid var(--line)}
@media(max-width:980px){
  .app{grid-template-columns:1fr}
  .sidebar{display:none;position:fixed;z-index:20;inset:0 auto 0 0;width:310px}
  .sidebar.open{display:block}
  .mobile-menu{display:inline-flex}
  .cards{grid-template-columns:repeat(2,1fr)}
  .grid.two,.comparison{grid-template-columns:1fr}
  .hero-visual{display:none}
  .project-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:620px){
  .topbar{padding:14px}
  .content{padding:22px 14px 44px}
  .hero{padding:30px}
  .cards,.accessory-grid,.starter-list{grid-template-columns:1fr}
  .cta{align-items:flex-start;flex-direction:column}
}


.social-sidebar{
  margin-top:28px;
  padding-top:22px;
  border-top:1px solid var(--line);
}
.social-sidebar p{
  margin:0 0 12px;
  color:var(--muted);
  font-size:.86rem;
  font-weight:800;
  text-transform:uppercase;
  letter-spacing:.12em;
}
.social-links{
  display:grid;
  gap:10px;
}
.social-links a,
.footer-social a{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--line);
  background:linear-gradient(135deg,rgba(103,232,249,.10),rgba(139,92,246,.10));
  color:var(--text);
  border-radius:999px;
  padding:10px 13px;
  font-weight:900;
  transition:.2s;
}
.social-links a:hover,
.footer-social a:hover{
  transform:translateY(-2px);
  border-color:rgba(103,232,249,.45);
}
.footer-inner{
  max-width:1180px;
  margin:0 auto;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:18px;
  flex-wrap:wrap;
}
.footer-inner p{
  margin:0;
}
.footer-social{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}
@media(max-width:980px){
  .social-sidebar{
    margin-bottom:24px;
  }
}
@media(max-width:620px){
  .footer-inner{
    justify-content:center;
    text-align:center;
  }
  .footer-social{
    justify-content:center;
  }
}


.logo{
  display:flex;
  align-items:center;
  justify-content:center;
  margin-bottom:28px;
  padding:10px;
  border:1px solid var(--line);
  border-radius:22px;
  background:
    linear-gradient(135deg,rgba(255,255,255,.08),rgba(255,255,255,.02)),
    var(--panel);
  box-shadow:var(--shadow);
}
.site-logo-img{
  width:100%;
  max-width:220px;
  height:auto;
  display:block;
  object-fit:contain;
  filter:drop-shadow(0 16px 20px rgba(0,0,0,.28));
}
.logo-mark{
  display:none;
}
@media(max-width:980px){
  .site-logo-img{
    max-width:210px;
  }
}


/* Current Voxel 3D image logo */
.logo{
  display:flex;
  align-items:center;
  justify-content:center;
  margin-bottom:28px;
  padding:8px;
  border:1px solid var(--line);
  border-radius:24px;
  background:#071225;
  box-shadow:var(--shadow);
  overflow:hidden;
}
.site-logo-img{
  width:100%;
  max-width:235px;
  height:auto;
  display:block;
  object-fit:contain;
  border-radius:18px;
}
.logo-mark{
  display:none;
}
@media(max-width:980px){
  .site-logo-img{
    max-width:220px;
  }
}


/* Animated 3D printer GIF hero visual */
.hero-visual{
  padding:14px;
}
.printer{
  width:120px;
  height:92px;
  display:block;
  object-fit:contain;
  border:0;
  border-radius:0;
  position:static;
  background:transparent;
}
.printer:before,
.printer:after{
  content:none !important;
  display:none !important;
}


/* Beginner guide expanded printer selection */
.timeline article.wide-step{
  align-items:start;
}
.mini-guide{
  margin-top:18px;
  padding:18px;
  border:1px solid var(--line);
  border-radius:20px;
  background:linear-gradient(135deg,rgba(103,232,249,.08),rgba(139,92,246,.08)),var(--panel-2);
}
.mini-guide h4{
  margin:0 0 14px;
  font-size:1.05rem;
}
.mini-guide h5{
  margin:0 0 8px;
  color:var(--text);
  font-size:.98rem;
}
.mini-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:14px;
  margin-bottom:18px;
}
.mini-grid div{
  padding:16px;
  border:1px solid var(--line);
  border-radius:16px;
  background:rgba(255,255,255,.04);
}
.brand-chips{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin:0 0 16px;
}
.brand-chips span{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:9px 12px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.06);
  color:var(--text);
  font-weight:900;
  font-size:.9rem;
}
.brand-note{
  margin:0;
}
@media(max-width:720px){
  .timeline article.wide-step{
    grid-template-columns:1fr;
  }
  .mini-grid{
    grid-template-columns:1fr;
  }
}


/* Choose Printer page */
.small-btn{
  margin-top:14px;
  width:fit-content;
}
.page-actions{
  margin-bottom:22px;
}
.back-btn{
  background:var(--panel-2);
}
.printer-type-cards{grid-template-columns:repeat(3,minmax(0,1fr));}
.muted-text{
  color:var(--muted);
  line-height:1.7;
}
.large-chips{
  margin-top:18px;
}
@media(max-width:720px){
  .printer-type-cards{grid-template-columns:repeat(3,minmax(0,1fr));}
}


/* TikTok/social-style printer guide button */
.social-style-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  width:fit-content;
  margin-top:16px;
  padding:12px 18px;
  border-radius:999px;
  border:1px solid rgba(103,232,249,.45);
  background:
    linear-gradient(135deg,rgba(103,232,249,.22),rgba(139,92,246,.22)),
    var(--panel-2);
  color:var(--text);
  font-weight:900;
  box-shadow:0 14px 34px rgba(0,0,0,.22);
  transition:.2s ease;
}
.social-style-btn:hover{
  transform:translateY(-2px);
  border-color:rgba(103,232,249,.8);
  box-shadow:0 18px 42px rgba(0,0,0,.3);
}
.social-style-btn span{
  width:28px;
  height:28px;
  display:inline-grid;
  place-items:center;
  border-radius:999px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
}


/* Elongated one-line printer guide button */
.printer-learn-btn{
  min-width:390px;
  max-width:100%;
  white-space:nowrap;
  padding-left:24px;
  padding-right:24px;
}
@media(max-width:620px){
  .printer-learn-btn{
    min-width:0;
    width:100%;
    white-space:normal;
    text-align:center;
  }
}


/* Indented sidebar sub-navigation */
.nav a.sub-nav{
  margin-left:18px;
  padding-left:20px;
  font-size:.92rem;
  border-left:2px solid rgba(103,232,249,.35);
  border-radius:12px;
}
.nav a.sub-nav.active{
  border-left-color:var(--brand);
}


/* Local printer illustrations on Choose Printer page */
.printer-photo-card{
  overflow:hidden;
}
.printer-type-img{
  width:100%;
  aspect-ratio:16/10.5;
  object-fit:cover;
  display:block;
  border-radius:18px;
  margin-bottom:16px;
  border:1px solid var(--line);
  background:#071225;
}
.image-note{
  margin-top:-6px;
  margin-bottom:18px;
}


/* Creality local product photos */
.printer-type-img{
  background:#050814;
  object-fit:contain;
  padding:10px;
}
.mini-link-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  margin-top:12px;
  padding:10px 13px;
  border-radius:999px;
  border:1px solid rgba(103,232,249,.45);
  background:linear-gradient(135deg,rgba(103,232,249,.14),rgba(139,92,246,.14));
  color:var(--text);
  font-weight:900;
  font-size:.9rem;
}
.mini-link-btn:hover{
  transform:translateY(-2px);
}