:root{
  --bg:#07111f;
  --bg-2:#0c1c31;
  --panel:rgba(255,255,255,0.06);
  --panel-2:rgba(255,255,255,0.08);
  --line:rgba(255,255,255,0.12);
  --text:#eaf2ff;
  --muted:#9fb5d6;
  --blue:#69b7ff;
  --blue-2:#2f7cff;
  --gold:#ffb76a;
  --teal:#4ce0d2;
  --shadow:0 22px 60px rgba(0,0,0,0.28);
  --radius:24px;
  --max:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--text);
  background:
    radial-gradient(circle at 10% 10%, rgba(47,124,255,.18), transparent 30%),
    radial-gradient(circle at 90% 15%, rgba(255,183,106,.12), transparent 30%),
    linear-gradient(180deg, #081221 0%, #091729 45%, #06101d 100%);
  line-height:1.75;
}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
.container{width:min(var(--max), calc(100% - 40px));margin:0 auto}
.narrow{width:min(980px, calc(100% - 40px));margin:0 auto}
.site-header{
  position:sticky;top:0;z-index:50;
  backdrop-filter: blur(18px);
  background:rgba(7,17,31,0.7);
  border-bottom:1px solid var(--line)
}
.nav-wrap{
  min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:22px
}
.brand{display:flex;align-items:center;gap:14px;color:var(--text)}
.brand img{width:42px;height:42px}
.brand strong{font-size:1.15rem;letter-spacing:.2px}
.brand span{display:block;color:var(--muted);font-size:.86rem;line-height:1.2}
.site-nav{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.site-nav a{color:#d5e5ff;font-weight:600;opacity:.86}
.site-nav a.active,.site-nav a:hover{opacity:1;color:#fff;text-decoration:none}
.site-header .brand,
.site-nav a,
.footer-site-links a{
  position: relative;
  isolation: isolate;
  transition: color .2s ease, opacity .2s ease, transform .2s ease;
}
.site-header .brand::before,
.site-nav a::before,
.footer-site-links a::before{
  content:"";
  position:absolute;
  inset:-8px -12px;
  z-index:-1;
  border-radius:14px;
  background:linear-gradient(135deg,#8bc8ff 0%,#5ca7ff 55%,#9ae0ff 100%);
  box-shadow:0 14px 28px rgba(82,155,255,.26);
  opacity:0;
  transform:scale(.92);
  transition:opacity .2s ease, transform .2s ease;
}
.site-header .brand:hover,
.site-header .brand:focus-visible,
.site-nav a:hover,
.site-nav a:focus-visible,
.footer-site-links a:hover,
.footer-site-links a:focus-visible{
  color:#03101d;
  opacity:1;
  text-decoration:none;
  transform:translateY(-1px);
}
.site-header .brand:hover::before,
.site-header .brand:focus-visible::before,
.site-nav a:hover::before,
.site-nav a:focus-visible::before,
.footer-site-links a:hover::before,
.footer-site-links a:focus-visible::before{
  opacity:1;
  transform:scale(1);
}
.site-header .brand:hover span,
.site-header .brand:focus-visible span{
  color:#03101d;
}
.home-page .hero{
  position:relative;
  isolation:isolate;
  min-height:max(416px, 48.7vw);
  padding:72px 0 42px;
}
.home-page .hero::before{
  content:"";
  position:absolute;
  z-index:-1;
  inset:0;
  background:url("/assets/img/background.png") center bottom / cover no-repeat;
  opacity:.22;
  pointer-events:none;
}
.home-page main > .hero + .section{
  padding-top:56px;
}
.hero-grid{
  display:block
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  padding:7px 14px;border-radius:999px;
  color:#dbe9ff;background:rgba(255,255,255,.07);border:1px solid var(--line);
  font-weight:700;font-size:.9rem
}
.hero h1{
  font-size:clamp(3.25rem, 6.2vw, 5.2rem);
  line-height:1.04;margin:18px 0 18px;letter-spacing:-0.03em
}
.hero p{font-size:1.08rem;color:var(--muted);max-width:730px;margin:0 0 26px}
.hero-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:12px 18px;border-radius:14px;font-weight:800;letter-spacing:.01em;
  transition:.2s ease;border:1px solid transparent
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{
  color:#03101d;background:linear-gradient(135deg,#8bc8ff 0%,#5ca7ff 55%,#9ae0ff 100%);
  box-shadow:0 14px 28px rgba(82,155,255,.26)
}
.btn-secondary{
  color:#eef5ff;background:rgba(255,255,255,.06);border-color:var(--line)
}
.btn-secondary:hover,
.btn-secondary:focus-visible{
  color:#03101d;
  background:linear-gradient(135deg,#8bc8ff 0%,#5ca7ff 55%,#9ae0ff 100%);
  border-color:transparent;
  box-shadow:0 14px 28px rgba(82,155,255,.26);
}
.panel{
  background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.05));
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow)
}
.section{padding:30px 0 64px}
.section-title{display:flex;align-items:end;justify-content:space-between;gap:14px;margin-bottom:20px}
.section-title h2{font-size:2rem;margin:0}
.section-title p{margin:0;color:var(--muted)}
.capability-layout{
  margin-top:8px;
}
.capability-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:18px;
}
.capability-tags span{
  display:inline-flex;
  align-items:center;
  min-height:30px;
  padding:5px 10px;
  border-radius:999px;
  color:#d8e9ff;
  background:rgba(255,255,255,.06);
  border:1px solid var(--line);
  font-size:.84rem;
  font-weight:700;
  line-height:1.2;
}
.capability-grid{
  display:grid;
  grid-template-columns:repeat(3, minmax(0, 1fr));
  gap:18px;
}
.capability-item{
  display:flex;
  flex-direction:column;
  min-height:245px;
  padding:24px;
}
.capability-title{
  margin-bottom:14px;
  text-transform:none;
  letter-spacing:.04em;
  font-size:1.02rem;
  line-height:1.25;
}
.capability-title::first-letter{
  font-size:1.35em;
}
.capability-logo{
  display:flex;
  justify-content:center;
  align-items:center;
  margin:6px 0 18px;
  color:#5ca7ff;
}
.capability-logo svg{
  width:118px;
  height:118px;
  display:block;
  margin-inline:auto;
  fill:none;
  stroke:currentColor;
  stroke-width:2.8;
  stroke-linecap:round;
  stroke-linejoin:round;
}
.capability-logo-parallel svg{
  width:132px;
  height:132px;
}
.capability-logo text{
  fill:currentColor;
  stroke:none;
  font-size:14px;
  font-weight:800;
  font-family:Inter, Arial, sans-serif;
}
.capability-item h3{
  margin:12px 0 10px;
  font-size:1.26rem;
  line-height:1.25;
}
.capability-item p{
  margin:0;
  color:var(--muted);
  line-height:1.65;
}
.capability-item .capability-tags{
  margin-top:auto;
  padding-top:22px;
}
.grid{display:grid;gap:20px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{padding:24px}
.card h3,.card h4{margin-top:0}
.card p:last-child{margin-bottom:0}
.feature-icon{
  width:46px;height:46px;border-radius:14px;
  display:grid;place-items:center;margin-bottom:12px;
  background:linear-gradient(135deg,rgba(105,183,255,.22),rgba(76,224,210,.18));
  border:1px solid rgba(255,255,255,.12)
}
.chip-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.chip{
  padding:7px 12px;border-radius:999px;font-weight:700;font-size:.88rem;
  color:#d8e9ff;background:rgba(255,255,255,.06);border:1px solid var(--line)
}
.kicker{color:#8bc8ff;text-transform:uppercase;letter-spacing:.12em;font-size:.78rem;font-weight:800}
.showcase{
  display:grid;grid-template-columns:1.05fr .95fr;gap:22px;align-items:stretch
}
.image-card{
  padding:18px;
  display:flex;
  flex-direction:column;
  gap:14px;
}
.showcase-image-frame{
  display:grid;
  place-items:center;
  aspect-ratio:2.05;
  padding:14px;
  border-radius:18px;
  border:1px solid rgba(255,255,255,.09);
  background:rgba(255,255,255,.72);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.showcase-image-frame-square{
  width:min(100%, 320px);
  aspect-ratio:1;
  justify-self:center;
}
.showcase-image-frame img{
  width:100%;
  height:100%;
  object-fit:contain;
  border-radius:12px;
}
.image-caption{color:var(--muted);font-size:.95rem}
.text-list{padding-left:20px;margin:12px 0 0}
.text-list li+li{margin-top:8px}
.metric-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:18px
}
.metric{
  padding:18px;border-radius:18px;background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.08)
}
.metric strong{display:block;font-size:1.1rem;margin-bottom:4px}
.metric span{color:var(--muted);font-size:.92rem}
.split{
  display:grid;grid-template-columns:.92fr 1.08fr;gap:22px;align-items:center
}
.code{
  padding:20px;border-radius:20px;
  background:#07131f;border:1px solid rgba(255,255,255,.11);
  overflow:auto
}
.code-copy-wrap{
  position:relative;
}
.code-copy-btn{
  position:absolute;
  top:12px;
  right:12px;
  z-index:1;
  width:30px;
  height:30px;
  padding:0;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid rgba(255,255,255,.16);
  border-radius:0;
  background:rgba(10,24,40,.88);
  color:#eaf2ff;
  cursor:pointer;
  opacity:1;
  transition:opacity .16s ease, background .16s ease, border-color .16s ease, color .16s ease;
}
.code-copy-btn:hover{
  background:rgba(21,42,67,.94);
}
.code-copy-btn:focus-visible{
  outline:2px solid #69b7ff;
  outline-offset:2px;
}
.code-copy-icon{
  width:16px;
  height:16px;
  pointer-events:none;
}
.code-copy-btn[data-copy-state="copied"]{
  color:#8dd9b0;
  border-color:rgba(141,217,176,.35);
}
.code-copy-btn[data-copy-state="failed"]{
  color:#ffb2b2;
  border-color:rgba(255,178,178,.35);
}
@media (hover:hover) and (pointer:fine){
  .code-copy-btn{
    opacity:0;
  }
  .code-copy-btn:hover,
  .code-copy-btn:focus-visible,
  .code-copy-btn[data-copy-state="copied"],
  .code-copy-btn[data-copy-state="failed"]{
    opacity:1;
  }
}
pre{margin:0;color:#d8ebff;font-size:.95rem;line-height:1.65}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.logo-gallery{
  display:grid;grid-template-columns:200px 1fr;gap:22px;align-items:center
}
.logo-gallery .badge-box{
  padding:16px;border-radius:20px;background:rgba(255,255,255,.05);border:1px solid var(--line)
}
.logo-gallery img{width:100%}
.contact-card{
  display:grid;grid-template-columns:1fr 1fr;gap:20px
}
.footer{
  padding:26px 0 40px;border-top:1px solid var(--line);margin-top:30px
}
.footer-wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--muted)}
.highlight{
  color:#fff;
  background:linear-gradient(90deg,#fff,#a9d5ff 55%,#ffe5bf 100%);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent
}
.note{
  padding:16px 18px;border-radius:16px;background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--muted)
}
.center{text-align:center}
.mt-8{margin-top:8px}
.mt-12{margin-top:12px}
.mt-16{margin-top:16px}
.mt-20{margin-top:20px}
.mt-24{margin-top:24px}
@media (max-width:980px){
  .capability-grid{
    grid-template-columns:1fr;
  }
  .capability-item{
    min-height:unset;
  }
  .showcase,.split,.logo-gallery,.contact-card,.grid-3,.grid-2,.metric-strip{grid-template-columns:1fr}
  .nav-wrap{padding:14px 0;flex-direction:column;align-items:flex-start}
  .home-page .hero{
    min-height:416px;
    padding-top:44px;
  }
  .home-page .hero::before{
    background-size:cover;
    background-position:center bottom;
    opacity:.18;
  }
}

/* tutorial document layout */
.tutorial-layout{
  display:grid;
  grid-template-columns:220px minmax(0, 1fr) 220px;
  gap:22px;
  align-items:start;
}
.tutorial-sidebar{
  padding:0;
  position:sticky;
  top:98px;
  max-height:calc(100vh - 118px);
  overflow:auto;
}
.tutorial-sidebar-inner{
  padding:22px 18px;
}
.tutorial-content{
  min-width:0;
  padding:30px 34px;
}
.toc-heading{
  font-size:.82rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  font-weight:800;
  color:#8fc3ff;
  margin-bottom:10px;
}
.toc-section-label{
  font-size:.96rem;
  font-weight:700;
  color:#dce9ff;
  margin-bottom:12px;
  line-height:1.45;
}
.toc-nav{
  display:flex;
  flex-direction:column;
  gap:8px;
}
.toc-link{
  display:block;
  padding:9px 12px;
  border-radius:12px;
  color:var(--muted);
  border:1px solid transparent;
  transition:.18s ease;
  line-height:1.4;
}
.toc-link:hover{
  text-decoration:none;
  color:#eef6ff;
  background:rgba(255,255,255,.05);
  border-color:rgba(255,255,255,.08);
}
.toc-link.active{
  color:#ffffff;
  background:linear-gradient(135deg, rgba(105,183,255,.18), rgba(76,224,210,.10));
  border-color:rgba(139,200,255,.22);
}
.toc-link-primary{
  font-weight:700;
}
.toc-link-secondary{
  font-size:.95rem;
  padding-left:14px;
}
.tutorial-block + .tutorial-block{
  margin-top:48px;
  padding-top:12px;
  border-top:1px solid rgba(255,255,255,.08);
}
.tutorial-block h2{
  margin:8px 0 10px;
  font-size:2rem;
}
.tutorial-lead{
  color:var(--muted);
  font-size:1.03rem;
  margin:0 0 20px;
}
.tutorial-overview{
  padding:30px 34px;
  margin-bottom:22px;
}
.tutorial-overview h2{
  margin:8px 0 10px;
  font-size:2rem;
}
.tutorial-overview-grid{
  display:grid;
  grid-template-columns:repeat(3, minmax(0, 1fr));
  gap:18px;
}
.tutorial-overview-card{
  display:flex;
  flex-direction:column;
  gap:10px;
  min-height:185px;
  padding:22px;
  color:var(--text);
  transition:.18s ease;
}
.tutorial-overview-card:hover{
  text-decoration:none;
  transform:translateY(-1px);
}
.tutorial-overview-card strong{
  font-size:1.15rem;
  line-height:1.3;
}
.tutorial-overview-card span:last-child{
  color:var(--muted);
  line-height:1.6;
}
.doc-kicker{
  color:#7ec0ff;
  font-size:.78rem;
  text-transform:uppercase;
  letter-spacing:.14em;
  font-weight:800;
}
.doc-subsection{
  scroll-margin-top:110px;
  margin-top:24px;
}
.doc-subsection h3{
  scroll-margin-top:110px;
  margin-bottom:10px;
  font-size:1.22rem;
}
@media (max-width:1180px){
  .tutorial-layout{
    grid-template-columns:210px minmax(0, 1fr);
  }
  .tutorial-sidebar-right{
    display:none;
  }
}
@media (max-width:860px){
  .tutorial-layout{
    grid-template-columns:1fr;
  }
  .tutorial-sidebar{
    position:static;
    max-height:none;
  }
  .tutorial-content{
    padding:24px 20px;
  }
}

/* team / contact */
.team-section + .team-section{margin-top:28px}
.team-header{margin-bottom:16px}
.team-header h3{margin:6px 0 6px;font-size:1.6rem}
.team-header p{margin:0;color:var(--muted)}
.people-grid{display:grid;gap:20px}
.people-grid-authors{grid-template-columns:repeat(2, minmax(0, 1fr))}
.people-grid-contributors{grid-template-columns:repeat(3, minmax(0, 1fr))}
.person-card{padding:22px}
.person-card-author{min-height:260px}
.person-card-contributor{min-height:210px;padding:18px}
.person-top{display:flex;align-items:center;gap:16px;margin-bottom:14px}
.avatar{
  border-radius:999px;
  display:grid;
  place-items:center;
  font-weight:800;
  letter-spacing:.04em;
  color:#07111f;
  background:linear-gradient(135deg,#9ed3ff 0%,#71bbff 52%,#8ee2da 100%);
  box-shadow:0 10px 24px rgba(41,117,201,.22);
  flex:0 0 auto;
}
.avatar-lg{width:74px;height:74px;font-size:1.05rem}
.avatar-sm{width:56px;height:56px;font-size:.92rem}
.person-meta h4{margin:2px 0 6px;font-size:1.18rem}
.person-role{
  display:inline-block;
  padding:4px 10px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  color:var(--muted);
  font-size:.8rem;
  font-weight:700;
}
.person-affiliation{
  margin:0;
  color:var(--muted);
  line-height:1.5;
}
.person-bio{
  margin:0 0 14px;
  color:var(--text);
  opacity:.92;
}
.person-links{
  display:flex;
  flex-wrap:wrap;
  gap:10px 14px;
  color:var(--muted);
  font-size:.95rem;
}
.person-links span{
  padding:4px 10px;
  border-radius:999px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
}

/* automatic color mode */
:root{color-scheme:dark light}

@media (prefers-color-scheme: light){
  :root{
    --bg:#f4f8fe;
    --bg-2:#ecf3fc;
    --panel:rgba(255,255,255,0.88);
    --panel-2:rgba(255,255,255,0.92);
    --line:rgba(20,50,90,0.10);
    --text:#0f1c2f;
    --muted:#5a6f8b;
    --blue:#2a79f6;
    --blue-2:#1e64d8;
    --gold:#f4a24b;
    --teal:#1cc7b6;
    --shadow:0 18px 48px rgba(34,71,128,0.10);
  }

  body{
    background:
      radial-gradient(circle at 12% 10%, rgba(47,124,255,.10), transparent 28%),
      radial-gradient(circle at 88% 14%, rgba(244,162,75,.10), transparent 28%),
      linear-gradient(180deg, #f7fbff 0%, #eef5fc 52%, #f7fbff 100%);
  }

  .site-header{
    background:rgba(255,255,255,0.78);
  }

  .brand{color:var(--text)}
  .site-nav a{color:#45627f}
  .site-nav a.active,.site-nav a:hover{color:#0f1c2f}

  .panel{
    background:linear-gradient(180deg, rgba(255,255,255,.92), rgba(249,252,255,.86));
  }

  .eyebrow,
  .chip,
  .note,
  .stat,
  .metric,
  .logo-gallery .badge-box,
  .person-role,
  .person-links span{
    background:rgba(255,255,255,.70);
  }

  .eyebrow{color:#2b4665}
  .chip{
    color:#4d6480;
    border-color:rgba(20,50,90,.14);
  }
  .capability-tags span{
    color:#24517f;
    background:rgba(47,124,255,.08);
    border-color:rgba(47,124,255,.18);
  }
  .btn-secondary{
    color:#163454;
    background:rgba(255,255,255,.72);
  }

  .site-nav a.active,.toc-link.active{color:#0f1c2f}
  .toc-section-label{color:#28425f}
  .toc-heading,.doc-kicker,.kicker{color:#2f7cff}

  .toc-link:hover{
    color:#143250;
    background:rgba(30,100,216,.06);
    border-color:rgba(30,100,216,.10);
  }
  .toc-link.active{
    color:#0f1c2f;
    background:linear-gradient(135deg, rgba(47,124,255,.12), rgba(28,199,182,.08));
    border-color:rgba(30,100,216,.12);
  }

  .code{
    background:#f7fbff;
    border-color:rgba(20,50,90,.10);
  }
  .code-copy-btn{
    background:rgba(255,255,255,.92);
    color:#143250;
    border-color:rgba(20,50,80,.14);
  }
  .code-copy-btn:hover{
    background:#ffffff;
  }
  pre{color:#1c3350}

  .highlight{
    background:linear-gradient(90deg,#0f1c2f,#1e64d8 55%,#d98528 100%);
    -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  }

  .avatar{
    color:#ffffff;
    box-shadow:0 10px 24px rgba(41,117,201,.14);
  }

  .tutorial-block + .tutorial-block{
    border-top:1px solid rgba(20,50,90,.08);
  }
}

@media (max-width:980px){
  .people-grid-authors,
  .people-grid-contributors{grid-template-columns:1fr}
}

/* floating card effect */
.float-in{
  opacity: 0;
  transform: translateY(22px) scale(0.985);
  filter: saturate(0.94);
  transition:
    opacity 720ms cubic-bezier(.2,.8,.2,1) var(--float-delay, 0ms),
    transform 820ms cubic-bezier(.2,.8,.2,1) var(--float-delay, 0ms),
    filter 720ms ease var(--float-delay, 0ms),
    box-shadow 260ms ease;
  will-change: transform, opacity;
}
.float-visible{
  opacity: 1;
  transform: translateY(0) scale(1);
  filter: saturate(1);
  animation: float-drift 6.5s ease-in-out var(--float-offset, 0s) infinite;
}
@keyframes float-drift{
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-7px); }
}
@media (hover: hover) and (pointer: fine){
  .float-visible:hover{
    transform: translateY(-10px) scale(1.01);
    box-shadow: 0 24px 60px rgba(24, 44, 76, 0.22);
    animation-play-state: paused;
  }
}
@media (prefers-reduced-motion: reduce){
  .float-in,
  .float-visible{
    opacity: 1 !important;
    transform: none !important;
    animation: none !important;
    transition: none !important;
    filter: none !important;
  }
}

/* home brand text only */
.brand-text-only{
  display:flex;
  align-items:center;
}
.brand-text-only div{
  display:flex;
  flex-direction:column;
}
.brand-text-only strong{
  display:block;
}
.brand-text-only span{
  max-width: 520px;
}

/* home analytics section */
.analytics-layout{
  display:grid;
  grid-template-columns:1.18fr .82fr;
  gap:22px;
  align-items:stretch;
}
.analytics-geo{
  min-height:420px;
}
.analytics-head{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:16px;
  margin-bottom:18px;
}
.analytics-head h3{
  margin:6px 0 0;
  font-size:1.5rem;
}
.analytics-pill{
  padding:7px 12px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.05);
  color:var(--muted);
  font-size:.88rem;
  font-weight:700;
}
.geo-stage{
  display:grid;
  grid-template-columns:1fr 200px;
  gap:18px;
  align-items:center;
}
.geo-map{
  position:relative;
  min-height:280px;
  border-radius:22px;
  border:1px solid rgba(255,255,255,.08);
  background:
    radial-gradient(circle at 22% 35%, rgba(105,183,255,.12), transparent 20%),
    radial-gradient(circle at 72% 52%, rgba(76,224,210,.12), transparent 18%),
    radial-gradient(circle at 62% 18%, rgba(255,183,106,.10), transparent 16%),
    linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
  overflow:hidden;
}
.geo-map::before{
  content:"";
  position:absolute;
  inset:12% 5%;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.05);
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,.03),
    0 0 0 1px rgba(255,255,255,.02);
}
.geo-map::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size:44px 44px;
  mask-image:radial-gradient(circle at center, black 62%, transparent 80%);
  opacity:.3;
}
.geo-dot,.geo-glow{
  position:absolute;
  border-radius:999px;
}
.geo-dot{
  width:10px;
  height:10px;
  background:linear-gradient(135deg, #8bd0ff, #5cb0ff);
  box-shadow:0 0 0 6px rgba(105,183,255,.08), 0 0 22px rgba(105,183,255,.28);
  z-index:2;
}
.geo-glow{
  width:120px;
  height:120px;
  background:radial-gradient(circle, rgba(105,183,255,.18), transparent 72%);
  filter:blur(4px);
  z-index:1;
}
.dot-1{left:17%; top:34%}
.dot-2{left:24%; top:41%}
.dot-3{left:31%; top:30%}
.dot-4{left:48%; top:28%}
.dot-5{left:54%; top:39%}
.dot-6{left:63%; top:36%}
.dot-7{left:71%; top:43%}
.dot-8{left:77%; top:27%}
.dot-9{left:82%; top:56%}
.dot-10{left:67%; top:62%}
.glow-1{left:16%; top:25%}
.glow-2{left:48%; top:23%}
.glow-3{left:69%; top:34%}
.geo-legend{
  display:grid;
  gap:10px;
}
.legend-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:11px 14px;
  border-radius:16px;
  border:1px solid rgba(255,255,255,.08);
  background:rgba(255,255,255,.04);
}
.legend-name{
  color:var(--muted);
  font-weight:600;
}
.legend-value{
  color:var(--text);
  font-weight:800;
}
.analytics-stack{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
}
.analytics-mini{
  min-height:180px;
  display:flex;
  flex-direction:column;
  justify-content:flex-start;
}
.analytics-number{
  font-size:3rem;
  line-height:1;
  font-weight:900;
  margin:14px 0 10px;
  letter-spacing:-.04em;
  color:#fff;
}
.analytics-label{
  color:var(--muted);
  font-size:.96rem;
}
.source-bars{
  display:grid;
  gap:12px;
  margin-top:14px;
}
.source-row{
  display:grid;
  grid-template-columns:58px 1fr auto;
  gap:10px;
  align-items:center;
}
.source-row span,.source-row strong{
  font-size:.9rem;
}
.source-row span{color:var(--muted)}
.source-bar{
  height:8px;
  border-radius:999px;
  background:rgba(255,255,255,.06);
  overflow:hidden;
}
.source-bar i{
  display:block;
  height:100%;
  border-radius:999px;
  background:linear-gradient(90deg, #6ab9ff 0%, #59a8ff 48%, #69e0d0 100%);
}
.trend-chart{
  height:94px;
  display:flex;
  align-items:flex-end;
  gap:10px;
  margin:18px 0 12px;
}
.trend-chart span{
  flex:1;
  min-width:0;
  border-radius:10px 10px 4px 4px;
  background:linear-gradient(180deg, rgba(105,183,255,.92), rgba(76,224,210,.62));
  box-shadow:0 8px 18px rgba(64,143,255,.16);
}
@media (prefers-color-scheme: light){
  .geo-map{
    border-color:rgba(20,50,90,.08);
    background:
      radial-gradient(circle at 22% 35%, rgba(47,124,255,.10), transparent 20%),
      radial-gradient(circle at 72% 52%, rgba(28,199,182,.10), transparent 18%),
      radial-gradient(circle at 62% 18%, rgba(244,162,75,.08), transparent 16%),
      linear-gradient(180deg, rgba(255,255,255,.92), rgba(248,251,255,.82));
  }
  .legend-row,
  .analytics-pill{
    background:rgba(255,255,255,.74);
    border-color:rgba(20,50,90,.08);
  }
  .source-bar{
    background:rgba(20,50,90,.08);
  }
  .showcase-image-frame{
    background:rgba(255,255,255,.90);
    border-color:rgba(20,50,90,.08);
  }
  .analytics-number{
    color:#102038;
  }
}
@media (max-width:1080px){
  .analytics-layout{
    grid-template-columns:1fr;
  }
}
@media (max-width:760px){
  .geo-stage,
  .analytics-stack{
    grid-template-columns:1fr;
  }
  .analytics-number{
    font-size:2.5rem;
  }
}

/* footer site style */
.footer-site{
  margin-top: 40px;
  padding: 21px 0 24px;
  background: transparent;
  border-top: 1px solid var(--line);
}
.footer-site-grid{
  display: grid;
  grid-template-columns: 1fr 1.1fr 1fr;
  gap: 22px;
  align-items: center;
}
.footer-site-col{
  min-width: 0;
}
.footer-site-right{
  justify-self: center;
  text-align: center;
}
.footer-site-heading{
  margin: 0 0 10px;
  font-size: 1rem;
  line-height: 1.2;
  font-weight: 700;
  color: var(--text);
}
.footer-site-links{
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
}
.footer-site-links a,
.footer-site-copy{
  font-size: 1rem;
  line-height: 1.55;
  color: var(--muted);
}
.footer-site-links a{
  font-weight: 600;
}
.footer-site-links a:hover{
  color: #03101d;
  text-decoration: none;
}
.footer-site-copy + .footer-site-copy{
  margin-top: 4px;
}
.footer-hits-row{
  display: flex;
  justify-content: center;
  align-items: center;
}
.footer-hits-row a{
  display: inline-flex;
  justify-content: center;
  align-items: center;
}
.footer-hits-row img{
  display: inline-block;
}

/* home ClustrMaps section */
.clustrmaps-layout{
  display:grid;
  grid-template-columns:1.1fr .72fr;
  gap:22px;
  align-items:stretch;
}
.clustrmaps-card{
  min-height: 420px;
}
.clustrmaps-embed{
  margin-top: 10px;
}
.clustrmaps-placeholder{
  min-height: 300px;
  border-radius: 20px;
  border: 1px dashed var(--line);
  background: rgba(255,255,255,.04);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.clustrmaps-placeholder-title{
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 10px;
}
.clustrmaps-help{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px;
  margin-top:16px;
}
.mini-tip{
  padding:14px 16px;
  border-radius:16px;
  border:1px solid var(--line);
  background: rgba(255,255,255,.04);
}
.mini-tip strong{
  display:block;
  margin-bottom:6px;
  font-size:.95rem;
  color:var(--text);
}
.mini-tip span{
  font-size:.94rem;
  line-height:1.6;
  color:var(--muted);
}
.clustrmaps-side-card{
  min-height: 420px;
}
.clustrmaps-side-card h3{
  margin: 8px 0 12px;
  font-size: 1.45rem;
}
@media (prefers-color-scheme: light){
  .clustrmaps-placeholder,
  .mini-tip{
    background: rgba(255,255,255,.72);
  }
}
@media (max-width: 1080px){
  .footer-site-grid,
  .clustrmaps-layout{
    grid-template-columns:1fr;
  }
  .footer-site-right{
    justify-self:start;
  }
}
@media (max-width: 760px){
  .clustrmaps-help{
    grid-template-columns:1fr;
  }
}

/* tutorial right sidebar secondary-only */
.toc-section-label{
  display:none !important;
}

/* wider global layout */
.container{
  width: min(1380px, calc(100% - 40px)) !important;
}
.narrow{
  width: min(1120px, calc(100% - 40px)) !important;
}
.tutorial-layout{
  grid-template-columns: 240px minmax(0, 1fr) 240px !important;
}
@media (max-width: 1180px){
  .tutorial-layout{
    grid-template-columns: 220px minmax(0, 1fr) !important;
  }
  .tutorial-overview-grid{
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 860px){
  .container,
  .narrow{
    width: min(100%, calc(100% - 24px)) !important;
  }
  .hero h1{
    font-size:clamp(3.7rem, 14vw, 5rem);
  }
  .tutorial-layout{
    grid-template-columns: 1fr !important;
  }
  .tutorial-overview{
    padding: 24px 20px;
  }
  .tutorial-overview-grid{
    grid-template-columns: 1fr;
  }
}

/* download page */
.download-intro{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:28px;
  padding:28px 0 44px;
}
.download-intro h1{
  max-width:720px;
  margin:8px 0 10px;
  font-size:clamp(2.4rem, 5vw, 4.4rem);
  line-height:1.08;
  letter-spacing:-.03em;
}
.download-intro p{max-width:none;margin:0;color:var(--muted);font-size:1.05rem}
.download-section{margin-top:22px}
.download-section-heading{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:18px;
}
.download-section-heading h2{margin:6px 0 0;font-size:2rem;line-height:1.2}
.download-status,.download-history-label{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--muted);
  font-size:.9rem;
  font-weight:700;
}
.download-status span{width:8px;height:8px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 5px rgba(76,224,210,.12)}
.download-groups{display:grid;grid-template-columns:1.12fr .88fr;gap:18px}
.download-group{padding:24px}
.download-group-header{display:flex;align-items:center;gap:14px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.download-group-header h3{margin:0 0 3px;font-size:1.35rem}
.download-group-header p{margin:0;color:var(--muted);font-size:.9rem;line-height:1.45}
.compute-mark{
  display:grid;place-items:center;
  width:58px;height:58px;flex:0 0 auto;
  border-radius:17px;
  color:#06111e;
  font-size:.76rem;
  font-weight:900;
  letter-spacing:.05em;
}
.compute-mark-cpu{background:linear-gradient(135deg,#8bc8ff,#5ce0d0);box-shadow:0 10px 24px rgba(76,224,210,.16)}
.compute-mark-gpu{background:linear-gradient(135deg,#ffd08b,#ff9f70);box-shadow:0 10px 24px rgba(255,183,106,.16)}
.platform-list{display:grid;gap:10px;padding-top:18px}
.platform-row{display:grid;grid-template-columns:48px minmax(0,1fr) auto auto;align-items:center;gap:12px;padding:13px 0}
.platform-row + .platform-row{border-top:1px solid rgba(255,255,255,.08)}
.platform-icon{display:grid;place-items:center;width:42px;height:32px;border:1px solid rgba(139,200,255,.22);border-radius:9px;color:#9ed5ff;font-size:.68rem;font-weight:900;letter-spacing:.06em}
.platform-icon-gpu{border-color:rgba(255,183,106,.28);color:#ffd092}
.platform-copy h4{margin:0;font-size:1rem;line-height:1.25}
.platform-copy p{margin:3px 0 0;color:var(--muted);font-size:.82rem;line-height:1.3}
.platform-version{color:var(--muted);font:700 .78rem ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;white-space:nowrap}
.btn-small{padding:8px 12px;border-radius:10px;font-size:.82rem;white-space:nowrap}
.download-note{margin:16px 0 0;padding-top:14px;border-top:1px solid var(--line);color:var(--muted);font-size:.82rem}
.gpu-requirements{display:grid;gap:2px;margin-top:18px;padding:13px 14px;border-left:3px solid var(--gold);background:rgba(255,183,106,.07);color:var(--muted);font-size:.84rem;line-height:1.5}
.gpu-requirements strong{color:var(--text);font-size:.86rem}
.changelog-section{padding-top:28px}
.release-timeline{position:relative;display:grid;gap:18px}
.release-timeline::before{content:"";position:absolute;left:170px;top:20px;bottom:20px;width:1px;background:linear-gradient(var(--blue),rgba(105,183,255,.08))}
.release-entry{display:grid;grid-template-columns:150px minmax(0,1fr);gap:40px;position:relative}
.release-date{padding-top:23px;text-align:right;color:var(--muted);font-size:.82rem}
.release-date strong{display:block;color:var(--text);font:800 1rem ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.release-date span{display:block;margin-top:3px}
.release-body{position:relative;padding:22px 24px;border:1px solid var(--line);border-radius:18px;background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.04))}
.release-body::before{content:"";position:absolute;left:-29px;top:28px;width:11px;height:11px;border-radius:50%;background:var(--blue);border:3px solid var(--bg-2);box-shadow:0 0 0 4px rgba(105,183,255,.18)}
.release-body h3{margin:0;font-size:1.25rem}
.release-summary{margin:5px 0 18px;color:var(--muted)}
.release-columns{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.release-columns h4{margin:0 0 6px;color:#8bc8ff;font-size:.8rem;text-transform:uppercase;letter-spacing:.1em}
.release-columns ul{margin:0;padding-left:18px;color:var(--muted)}
.release-columns li + li{margin-top:5px}
@media (prefers-color-scheme: light){
  .platform-row + .platform-row{border-top-color:rgba(20,50,90,.08)}
  .release-body{background:linear-gradient(180deg,rgba(255,255,255,.9),rgba(249,252,255,.82))}
  .release-body::before{border-color:#ecf3fc}
  .gpu-requirements{background:rgba(244,162,75,.08)}
}
@media (max-width: 760px){
  .download-intro{display:block;padding:20px 0 32px}
  .download-intro .btn{margin-top:20px}
  .download-section-heading{display:block}
  .download-status,.download-history-label{margin-top:10px}
  .download-groups{grid-template-columns:1fr}
  .download-group{padding:20px 16px}
  .platform-row{grid-template-columns:42px minmax(0,1fr) auto}
  .platform-version{grid-column:2;grid-row:2}
  .platform-row .btn{grid-column:3;grid-row:1 / span 2}
  .release-timeline::before{left:6px}
  .release-entry{display:block;padding-left:28px}
  .release-date{padding:0 0 10px;text-align:left}
  .release-body::before{left:-28px;top:25px}
  .release-columns{grid-template-columns:1fr;gap:16px}
}

/* contact page */
.contact-intro{padding:28px 0 42px}
.contact-intro h1{max-width:820px;margin:8px 0 10px;font-size:clamp(2.5rem,5vw,4.5rem);line-height:1.08;letter-spacing:-.03em}
.contact-intro p{margin:0;color:var(--muted);font-size:1.05rem}
.contact-section{margin-top:22px}
.contact-section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:18px}
.contact-section-heading h2{margin:6px 0 0;font-size:2rem;line-height:1.2}
.issue-label,.team-update-label{color:var(--muted);font-size:.9rem;font-weight:700}
.issue-label{display:inline-flex;align-items:center;gap:8px}
.issue-label span{width:8px;height:8px;border-radius:50%;background:#7ed6a4;box-shadow:0 0 0 5px rgba(126,214,164,.12)}
.issue-panel{display:grid;grid-template-columns:58px minmax(0,1fr) auto;align-items:center;gap:18px;padding:24px}
.issue-symbol{display:grid;place-items:center;width:58px;height:58px;border-radius:17px;background:linear-gradient(135deg,#ffcf8a,#ff9f70);color:#281507;font-size:1.8rem;font-weight:900;box-shadow:0 12px 28px rgba(255,183,106,.16)}
.issue-copy h3{margin:0 0 4px;font-size:1.35rem}
.issue-copy p{margin:0;color:var(--muted);line-height:1.6}
.issue-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:13px}
.issue-tags span{padding:5px 10px;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-size:.78rem;font-weight:700}
.team-lead{margin:-5px 0 18px;color:var(--muted)}
.contribution-board{padding:8px 26px}
.contribution-entry{padding:24px 0}
.contribution-entry + .contribution-entry{border-top:1px solid var(--line)}
.contribution-content h3{margin:0;font-size:1.18rem;line-height:1.35}
.contribution-content p{margin:4px 0 10px;color:var(--muted);font-size:.88rem}
.contribution-text{color:var(--text);line-height:1.6}
@media (max-width: 760px){
  .contact-intro{padding:20px 0 32px}
  .contact-section-heading{display:block}
  .issue-label,.team-update-label{display:inline-block;margin-top:10px}
  .issue-panel{grid-template-columns:46px minmax(0,1fr);padding:20px 16px}
  .issue-symbol{width:46px;height:46px;border-radius:14px;font-size:1.4rem}
  .issue-panel .btn{grid-column:1 / -1;justify-self:start}
  .contribution-board{padding:4px 16px}
  .contribution-entry{padding:20px 0}
}