:root{
  --bg:#08111d;
  --bg-soft:#0d1827;
  --bg-strong:#122136;
  --panel:#0f1b2d;
  --panel-strong:#15263a;
  --text:#f7f1e4;
  --muted:#9fb0c2;
  --soft:#d9e3ec;
  --gold:#e0b15d;
  --cyan:#63d2ff;
  --jade:#8be7b3;
  --rose:#ff8394;
  --amber:#f6c26b;
  --line:rgba(255,255,255,.1);
  --line-strong:rgba(255,255,255,.16);
  --shadow:0 24px 64px rgba(0,0,0,.32);
  --shadow-soft:0 18px 44px rgba(0,0,0,.2);
  --radius-xl:32px;
  --radius-lg:24px;
  --radius-md:18px;
  --content:1200px;
  --heading:"Iowan Old Style","Palatino Linotype","Book Antiqua","Cormorant Garamond",Georgia,serif;
  --body:"IBM Plex Sans","Segoe UI",Tahoma,Geneva,Verdana,sans-serif;
  --mono:"IBM Plex Mono","SFMono-Regular",Menlo,Consolas,monospace;
}

*{
  box-sizing:border-box;
}

html{
  scroll-behavior:smooth;
}

html[data-language] [data-lang]{
  display:none !important;
}

html[data-language="vi"] [data-lang="vi"],
html[data-language="en"] [data-lang="en"]{
  display:revert !important;
}

body{
  margin:0;
  min-width:320px;
  color:var(--text);
  font-family:var(--body);
  line-height:1.65;
  background:
    radial-gradient(circle at top left, rgba(99,210,255,.12), transparent 26%),
    radial-gradient(circle at top right, rgba(224,177,93,.12), transparent 28%),
    linear-gradient(180deg, #08111d 0%, #0a1421 38%, #07101a 100%);
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
  background-size:46px 46px;
  mask-image:linear-gradient(180deg, rgba(0,0,0,.28), transparent 86%);
}

a{
  color:inherit;
  text-decoration:none;
}

img{
  display:block;
  max-width:100%;
}

button,
input,
select,
textarea{
  font:inherit;
}

code{
  font-family:var(--mono);
}

[hidden]{
  display:none !important;
}

.shell{
  position:relative;
}

.container{
  width:min(calc(100% - 32px), var(--content));
  margin:0 auto;
}

.site-header{
  position:sticky;
  top:0;
  z-index:30;
  border-bottom:1px solid rgba(255,255,255,.06);
  background:rgba(8,17,29,.82);
  backdrop-filter:blur(18px);
}

.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:14px 0;
}

.brand{
  display:flex;
  align-items:center;
  gap:14px;
  min-width:0;
}

.brand-mark{
  width:52px;
  height:52px;
  border-radius:18px;
  border:1px solid rgba(255,255,255,.08);
  box-shadow:0 18px 42px rgba(99,210,255,.16);
}

.brand-copy{
  min-width:0;
}

.brand-name{
  display:block;
  font-family:var(--heading);
  font-size:1.34rem;
  line-height:1;
  letter-spacing:-.04em;
}

.brand-meta{
  display:block;
  margin-top:4px;
  color:var(--muted);
  font-size:.82rem;
  letter-spacing:.05em;
  text-transform:uppercase;
}

.header-actions{
  display:flex;
  align-items:center;
  gap:12px;
}

.site-nav{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
  justify-content:flex-end;
}

.site-nav a{
  display:inline-flex;
  align-items:center;
  min-height:42px;
  padding:0 14px;
  border-radius:999px;
  border:1px solid transparent;
  color:var(--muted);
  transition:background .2s ease,border-color .2s ease,color .2s ease,transform .2s ease;
}

.site-nav a:hover,
.site-nav a.is-active{
  color:var(--text);
  background:rgba(255,255,255,.05);
  border-color:rgba(255,255,255,.08);
}

.nav-cta{
  color:var(--bg) !important;
  background:linear-gradient(135deg, var(--gold), #f2d197) !important;
  border-color:transparent !important;
  font-weight:700;
}

.lang-dropdown{
  position:relative;
}

.lang-button{
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-height:44px;
  padding:0 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--text);
  cursor:pointer;
}

.lang-button:hover{
  border-color:var(--line-strong);
}

.lang-flag{
  font-size:1.1rem;
  line-height:1;
}

.lang-button-code{
  padding:2px 8px;
  border-radius:999px;
  background:rgba(255,255,255,.06);
  color:var(--muted);
  font-size:.76rem;
  letter-spacing:.09em;
  text-transform:uppercase;
}

.lang-button-caret{
  color:var(--muted);
  font-size:.9rem;
}

.lang-menu{
  position:absolute;
  top:calc(100% + 10px);
  right:0;
  width:min(260px, calc(100vw - 24px));
  padding:8px;
  border-radius:20px;
  border:1px solid var(--line);
  background:rgba(11,20,32,.96);
  box-shadow:var(--shadow);
}

.lang-option{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:12px 14px;
  border:0;
  border-radius:16px;
  background:transparent;
  color:var(--text);
  cursor:pointer;
  text-align:left;
}

.lang-option small{
  color:var(--muted);
}

.lang-option:hover,
.lang-option.is-active{
  background:rgba(255,255,255,.06);
}

.hero,
.doc-hero{
  padding:72px 0 26px;
}

.hero-grid,
.studio-grid,
.ecosystem-grid,
.timeline-grid,
.collection-grid,
.asset-grid,
.document-grid,
.api-grid,
.doc-link-grid,
.doc-info-grid,
.doc-layout{
  display:grid;
  gap:20px;
}

.hero-grid{
  grid-template-columns:minmax(0,1.18fr) minmax(320px,.82fr);
}

.studio-grid{
  grid-template-columns:minmax(0,1fr) minmax(340px,.9fr);
}

.ecosystem-grid,
.doc-link-grid{
  grid-template-columns:repeat(3,minmax(0,1fr));
}

.timeline-grid{
  grid-template-columns:repeat(4,minmax(0,1fr));
}

.collection-grid{
  grid-template-columns:repeat(3,minmax(0,1fr));
}

.asset-grid,
.document-grid,
.api-grid,
.doc-info-grid{
  grid-template-columns:repeat(2,minmax(0,1fr));
}

.card,
.metric-card,
.timeline-card,
.registry-card,
.callout-card,
.doc-card,
.studio-form,
.studio-output,
.api-card{
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  background:
    radial-gradient(circle at top left, rgba(99,210,255,.08), transparent 32%),
    linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.025));
  box-shadow:var(--shadow-soft);
}

.hero-copy,
.hero-note,
.doc-hero .panel,
.card-block,
.timeline-card,
.registry-card,
.callout-card,
.doc-card,
.studio-form,
.studio-output,
.api-card,
.doc-section{
  padding:26px;
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 12px;
  border-radius:999px;
  border:1px solid rgba(224,177,93,.24);
  background:rgba(224,177,93,.08);
  color:var(--gold);
  font-size:.76rem;
  font-weight:700;
  letter-spacing:.12em;
  text-transform:uppercase;
}

.hero h1,
.doc-hero h1{
  margin:18px 0 16px;
  font-family:var(--heading);
  font-size:clamp(2.5rem, 5vw, 4.6rem);
  line-height:.96;
  letter-spacing:-.05em;
}

.lead{
  margin:0;
  max-width:64ch;
  color:var(--soft);
  font-size:1.08rem;
}

.hero-actions,
.registry-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}

.hero-actions{
  margin-top:28px;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:48px;
  padding:0 18px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.035);
  color:var(--text);
  font-weight:600;
  cursor:pointer;
  transition:border-color .2s ease,transform .2s ease,background .2s ease;
}

.btn:hover{
  transform:translateY(-1px);
  border-color:var(--line-strong);
}

.btn-primary{
  color:var(--bg);
  background:linear-gradient(135deg, var(--gold), #f5d6a1);
  border-color:transparent;
}

.btn-secondary{
  background:linear-gradient(135deg, rgba(99,210,255,.18), rgba(139,231,179,.12));
  border-color:rgba(99,210,255,.18);
}

.key-points{
  display:grid;
  gap:12px;
}

.key-point{
  padding:16px;
  border-radius:18px;
  border:1px solid rgba(255,255,255,.06);
  background:rgba(255,255,255,.04);
}

.key-point strong{
  display:block;
  margin-bottom:6px;
  color:var(--gold);
}

.metric-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:16px;
}

.metric-card{
  padding:20px;
}

.metric-label{
  color:var(--muted);
  text-transform:uppercase;
  letter-spacing:.08em;
  font-size:.82rem;
}

.metric-value{
  display:block;
  margin-top:10px;
  font-size:2rem;
  line-height:1;
  font-weight:800;
}

.section{
  padding:28px 0 48px;
}

.section-head{
  display:flex;
  align-items:end;
  justify-content:space-between;
  gap:18px;
  margin-bottom:18px;
}

.section-head h2,
.hero-note h2,
.doc-section h2{
  margin:0;
  font-family:var(--heading);
  letter-spacing:-.04em;
}

.section-head p,
.card-subtle,
.doc-section p,
.doc-section li,
.api-card p,
.doc-card p{
  color:var(--soft);
}

.card-kicker{
  color:var(--cyan);
  text-transform:uppercase;
  letter-spacing:.1em;
  font-size:.76rem;
  font-weight:700;
}

.card-block h3,
.timeline-card h3,
.registry-card h3,
.doc-card h3,
.api-card h3{
  margin:10px 0 8px;
  font-family:var(--heading);
  font-size:1.42rem;
  letter-spacing:-.03em;
}

.timeline-step{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--gold);
  font-size:.86rem;
  text-transform:uppercase;
  letter-spacing:.08em;
  font-weight:700;
}

.timeline-step span{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:30px;
  height:30px;
  border-radius:50%;
  border:1px solid rgba(224,177,93,.24);
  background:rgba(224,177,93,.1);
}

.toolbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  flex-wrap:wrap;
  margin-bottom:18px;
}

.filter-group{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}

.filter-chip{
  padding:10px 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  color:var(--muted);
  cursor:pointer;
}

.filter-chip.is-active{
  color:var(--bg);
  background:linear-gradient(135deg, var(--cyan), #c0f1ff);
  border-color:transparent;
  font-weight:700;
}

.search-input,
.field input,
.field select,
.field textarea{
  width:100%;
  padding:14px 16px;
  border-radius:16px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  color:var(--text);
  outline:none;
}

.search-input::placeholder,
.field input::placeholder,
.field textarea::placeholder{
  color:rgba(255,255,255,.35);
}

.search-input:focus,
.field input:focus,
.field select:focus,
.field textarea:focus{
  border-color:rgba(99,210,255,.4);
  box-shadow:0 0 0 4px rgba(99,210,255,.08);
}

.registry-card{
  display:flex;
  flex-direction:column;
  gap:16px;
}

.registry-head{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:16px;
}

.registry-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}

.tag{
  display:inline-flex;
  align-items:center;
  min-height:30px;
  padding:0 10px;
  border-radius:999px;
  background:rgba(255,255,255,.045);
  border:1px solid rgba(255,255,255,.06);
  color:var(--soft);
  font-size:.84rem;
}

.status-chip{
  display:inline-flex;
  align-items:center;
  padding:7px 12px;
  border-radius:999px;
  font-size:.76rem;
  letter-spacing:.08em;
  font-weight:700;
  text-transform:uppercase;
  white-space:nowrap;
}

.tone-live{
  color:#09231a;
  background:linear-gradient(135deg, var(--jade), #cdfbe0);
}

.tone-ready{
  color:#072335;
  background:linear-gradient(135deg, var(--cyan), #d1f4ff);
}

.tone-pilot{
  color:#2f1900;
  background:linear-gradient(135deg, var(--amber), #ffdfb2);
}

.tone-warning{
  color:#3a121b;
  background:linear-gradient(135deg, var(--rose), #ffb8c2);
}

.tone-planned{
  color:var(--soft);
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.1);
}

.registry-meta{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:10px;
}

.registry-meta div,
.result-stat{
  padding:14px 16px;
  border-radius:16px;
  border:1px solid rgba(255,255,255,.06);
  background:rgba(255,255,255,.04);
}

.registry-meta span,
.result-stat span{
  display:block;
  color:var(--muted);
  font-size:.78rem;
  letter-spacing:.08em;
  text-transform:uppercase;
}

.registry-meta strong,
.result-stat strong{
  display:block;
  margin-top:6px;
}

.notice,
.output-empty,
.output-error,
.warning-block{
  padding:18px 20px;
  border-radius:18px;
  border:1px solid rgba(255,255,255,.08);
  background:rgba(255,255,255,.04);
}

.notice{
  border-color:rgba(224,177,93,.18);
  background:rgba(224,177,93,.08);
  color:#f3ddb1;
  margin-bottom:18px;
}

.studio-form h3,
.studio-output h3{
  margin:0 0 6px;
  font-family:var(--heading);
  font-size:1.5rem;
}

.field-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:14px;
}

.field-grid .field-full{
  grid-column:1 / -1;
}

.field{
  display:grid;
  gap:8px;
}

.field-label{
  font-size:.92rem;
  font-weight:600;
}

.field-note{
  color:var(--muted);
  font-size:.82rem;
}

.form-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:18px;
}

.output-topline{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  margin-bottom:16px;
}

.output-version{
  color:var(--muted);
  font-size:.85rem;
  font-family:var(--mono);
}

.result-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:12px;
}

.warning-block{
  margin-top:16px;
}

.warning-block h3{
  margin:0 0 10px;
  font-size:1rem;
  font-family:var(--body);
}

.warning-block ul{
  margin:0;
  padding-left:18px;
}

.warning-block li + li{
  margin-top:6px;
}

.pre-card,
pre{
  margin:16px 0 0;
  padding:18px;
  overflow:auto;
  border-radius:18px;
  border:1px solid rgba(99,210,255,.16);
  background:#07111d;
  color:#d8ecf6;
  font-size:.9rem;
}

.api-card code{
  display:inline-block;
  margin-top:8px;
  padding:8px 10px;
  border-radius:12px;
  background:rgba(255,255,255,.05);
  color:#cbefff;
}

.empty-state{
  padding:24px;
  border-radius:18px;
  border:1px dashed rgba(255,255,255,.14);
  color:var(--muted);
  background:rgba(255,255,255,.02);
}

.doc-layout{
  grid-template-columns:repeat(2,minmax(0,1fr));
}

.doc-section{
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  background:
    radial-gradient(circle at top left, rgba(99,210,255,.08), transparent 32%),
    linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.025));
}

.doc-section ul{
  margin:0;
  padding-left:18px;
}

.doc-section li + li{
  margin-top:8px;
}

.footer{
  padding:32px 0 44px;
}

.footer-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:18px;
  border-top:1px solid rgba(255,255,255,.08);
  color:var(--muted);
}

.footer-links{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}

.break-all{
  word-break:break-word;
}

@media (max-width: 1120px){
  .hero-grid,
  .studio-grid,
  .ecosystem-grid,
  .timeline-grid,
  .collection-grid,
  .asset-grid,
  .document-grid,
  .api-grid,
  .doc-link-grid,
  .doc-info-grid,
  .doc-layout{
    grid-template-columns:1fr 1fr;
  }
}

@media (max-width: 900px){
  .header-inner,
  .section-head,
  .footer-inner{
    align-items:flex-start;
  }

  .header-inner{
    flex-direction:column;
  }

  .site-nav{
    width:100%;
    justify-content:flex-start;
  }

  .header-actions{
    width:100%;
    justify-content:flex-start;
  }

  .hero-grid,
  .studio-grid,
  .ecosystem-grid,
  .timeline-grid,
  .collection-grid,
  .asset-grid,
  .document-grid,
  .api-grid,
  .doc-link-grid,
  .doc-info-grid,
  .doc-layout,
  .metric-grid,
  .registry-meta,
  .result-grid,
  .field-grid{
    grid-template-columns:1fr;
  }
}

@media (max-width: 640px){
  .container{
    width:min(calc(100% - 24px), var(--content));
  }

  .hero-copy,
  .hero-note,
  .doc-hero .panel,
  .card-block,
  .timeline-card,
  .registry-card,
  .callout-card,
  .doc-card,
  .studio-form,
  .studio-output,
  .api-card,
  .doc-section{
    padding:22px;
  }

  .brand-meta{
    display:none;
  }

  .search-input{
    min-width:100%;
  }

  .lang-menu{
    left:0;
    right:auto;
  }
}