:root{
  --paper:#FAF7F0;
  --paper-deep:#F2EDE1;
  --ink:#20262B;
  --teal:#1F5C53;
  --teal-deep:#163F39;
  --ochre:#865C1D;
  --line:#D9D2C2;
  --muted:#6B6357;
  --card:#FFFFFF;
}
*{box-sizing:border-box;}
@media (prefers-reduced-motion: no-preference){
  html{scroll-behavior:smooth;}
}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:'Work Sans',sans-serif;
  line-height:1.55;
}
.wrap{max-width:920px;margin:0 auto;padding:0 24px;}

/* ---------- Hero ---------- */
header.hero{
  position:relative;
  padding:72px 0 56px;
  background:
    radial-gradient(circle at 88% 18%, rgba(31,92,83,0.07), transparent 55%),
    var(--paper);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.eyebrow{
  font-family:'IBM Plex Mono',monospace;
  font-size:13px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--teal);
  margin:0 0 14px;
}
h1{
  font-family:'Fraunces',serif;
  font-weight:600;
  font-size:clamp(34px,5.4vw,56px);
  line-height:1.05;
  margin:0 0 18px;
  max-width:14ch;
}
.hero p.lede{
  max-width:48ch;
  color:var(--muted);
  font-size:17px;
  margin:0;
}
.stamp{
  position:absolute;
  right:22px;
  top:28px;
  width:128px;
  height:128px;
  opacity:.85;
}
.stamp svg{width:100%;height:100%;display:block;}

/* ---------- Folder tabs nav ---------- */
nav.tabs{
  position:sticky;
  top:0;
  z-index:10;
  background:var(--paper);
  border-bottom:1px solid var(--line);
}
nav.tabs .wrap{
  display:flex;
  gap:0;
}
nav.tabs a{
  font-family:'IBM Plex Mono',monospace;
  font-size:13px;
  letter-spacing:.06em;
  text-transform:uppercase;
  text-decoration:none;
  color:var(--muted);
  padding:16px 18px;
  border-bottom:3px solid transparent;
  transition:color .15s ease, border-color .15s ease;
}
nav.tabs a:hover, nav.tabs a:focus-visible{
  color:var(--teal-deep);
  border-bottom-color:var(--ochre);
}

section{padding:56px 0;border-bottom:1px solid var(--line);}
section:last-of-type{border-bottom:none;}

.section-head{margin-bottom:32px;}
.section-head .tag{
  font-family:'IBM Plex Mono',monospace;
  font-size:12px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--ochre);
  display:block;
  margin-bottom:8px;
}
.section-head h2{
  font-family:'Fraunces',serif;
  font-weight:600;
  font-size:clamp(24px,3.4vw,32px);
  margin:0 0 8px;
}
.section-head p{color:var(--muted);margin:0;max-width:56ch;}

/* ---------- Document cards ---------- */
.doc-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:16px;
}
.doc-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:4px;
  padding:20px 20px 22px;
  position:relative;
}
.doc-card .num{
  font-family:'IBM Plex Mono',monospace;
  font-size:12px;
  color:var(--ochre);
  letter-spacing:.06em;
  display:block;
  margin-bottom:10px;
}
.doc-card h3{
  font-family:'Fraunces',serif;
  font-size:19px;
  font-weight:600;
  margin:0 0 8px;
}
.doc-card p{
  margin:0;
  font-size:14.5px;
  color:var(--muted);
}
.doc-card .where{
  margin-top:12px;
  padding-top:12px;
  border-top:1px dashed var(--line);
  font-size:13px;
  color:var(--teal-deep);
}
.doc-card .where b{font-weight:600;}
.doc-card .where a{color:var(--teal-deep);font-weight:500;}
.doc-card .where a:focus-visible{outline:2px solid var(--teal);outline-offset:2px;}

/* ---------- Passo a passo (how-to) ---------- */
.howto-sub{margin-top:40px;}
.howto-sub .sub-head{margin-bottom:22px;}
.howto-sub .sub-head span.tag-mini{
  font-family:'IBM Plex Mono',monospace;
  font-size:11.5px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--teal);
  display:block;
  margin-bottom:6px;
}
.howto-sub .sub-head h3{
  font-family:'Fraunces',serif;
  font-weight:600;
  font-size:22px;
  margin:0 0 6px;
}
.howto-sub .sub-head p{margin:0;color:var(--muted);font-size:14.5px;}
.howto-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:22px;
}
.howto-panel{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:6px;
  overflow:hidden;
}
.howto-panel .panel-head{
  padding:14px 18px;
  border-bottom:1px solid var(--line);
  display:flex;
  align-items:baseline;
  gap:10px;
}
.howto-panel .panel-head .num{
  font-family:'IBM Plex Mono',monospace;
  font-size:12px;
  color:var(--ochre);
  letter-spacing:.06em;
}
.howto-panel .panel-head h4{
  font-family:'Fraunces',serif;
  font-size:16.5px;
  font-weight:600;
  margin:0;
}
.browser-frame{
  background:var(--paper-deep);
  padding:10px 10px 0;
}
.browser-frame .bar{
  display:flex;
  gap:6px;
  padding:0 4px 8px;
}
.browser-frame .bar span{
  width:9px;height:9px;border-radius:50%;
  background:var(--line);
}
.browser-frame img{
  display:block;
  width:100%;
  border:1px solid var(--line);
  border-bottom:none;
  border-radius:4px 4px 0 0;
}
.zoom-btn{
  display:block;
  width:100%;
  padding:0;
  border:none;
  background:none;
  cursor:zoom-in;
}
.zoom-btn:focus-visible{
  outline:2px solid var(--teal);
  outline-offset:2px;
}
.gif-lightbox{
  display:none;
  position:fixed;
  inset:0;
  background:rgba(20,16,12,.85);
  z-index:999;
  align-items:center;
  justify-content:center;
  padding:24px;
  cursor:zoom-out;
}
.gif-lightbox.open{
  display:flex;
}
.gif-lightbox .frame{
  position:relative;
  max-width:min(900px,100%);
  max-height:90vh;
  cursor:default;
}
.gif-lightbox canvas{
  display:block;
  max-width:min(900px,100%);
  max-height:90vh;
  border-radius:6px;
  border:1px solid var(--line);
  cursor:pointer;
}
.gif-lightbox canvas:focus-visible{
  outline:2px solid #fff;
  outline-offset:2px;
}
.gif-lightbox .fallback-img{
  display:none;
  max-width:min(900px,100%);
  max-height:90vh;
  border-radius:6px;
  border:1px solid var(--line);
}
.gif-lightbox.fallback canvas{
  display:none;
}
.gif-lightbox.fallback .fallback-img{
  display:block;
}
.gif-lightbox .pause-badge{
  display:none;
  position:absolute;
  top:50%;
  left:50%;
  transform:translate(-50%,-50%);
  width:56px;
  height:56px;
  border-radius:50%;
  background:rgba(20,16,12,.6);
  align-items:center;
  justify-content:center;
  pointer-events:none;
}
.gif-lightbox .pause-badge span{
  width:7px;
  height:22px;
  background:#fff;
  margin:0 4px;
  border-radius:1px;
}
.gif-lightbox.paused .pause-badge{
  display:flex;
}
.gif-lightbox-close{
  position:absolute;
  top:18px;
  right:22px;
  width:38px;
  height:38px;
  border-radius:50%;
  border:1px solid rgba(255,255,255,.4);
  background:rgba(20,16,12,.6);
  color:#fff;
  font-size:20px;
  line-height:1;
  cursor:pointer;
}
.gif-lightbox-close:focus-visible{
  outline:2px solid #fff;
  outline-offset:2px;
}
.howto-panel .steps{
  list-style:none;
  margin:0;
  padding:16px 18px 18px;
  counter-reset:step;
}
.howto-panel .steps li{
  counter-increment:step;
  position:relative;
  padding-left:26px;
  font-size:14px;
  color:var(--ink);
  margin-bottom:8px;
}
.howto-panel .steps li:last-child{margin-bottom:0;}
.howto-panel .steps a{color:var(--teal-deep);font-weight:500;}
.howto-panel .steps a:focus-visible{outline:2px solid var(--teal);outline-offset:2px;}
.howto-panel .steps li::before{
  content:counter(step);
  position:absolute;
  left:0;top:0;
  width:18px;height:18px;
  border-radius:50%;
  background:var(--teal);
  color:#fff;
  font-family:'IBM Plex Mono',monospace;
  font-size:10.5px;
  display:flex;
  align-items:center;
  justify-content:center;
}
@media (max-width:700px){
  .howto-grid{grid-template-columns:1fr;}
}


/* ---------- Checklist ---------- */
ul.checklist{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}
ul.checklist li{margin:0;}
.check-item{
  display:flex;
  align-items:flex-start;
  width:100%;
  gap:12px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:4px;
  padding:14px 16px;
  cursor:pointer;
  user-select:none;
  transition:background .15s ease;
  font:inherit;
  color:inherit;
  text-align:left;
}
.check-item:hover{background:#FDFCF8;}
.check-item:focus-visible{
  outline:2px solid var(--teal);
  outline-offset:2px;
}
.check-item .box{
  flex:0 0 auto;
  width:20px;height:20px;
  margin-top:1px;
  border:1.5px solid var(--teal);
  border-radius:3px;
  display:flex;
  align-items:center;
  justify-content:center;
}
.check-item .box svg{width:13px;height:13px;opacity:0;transform:scale(.6);transition:opacity .12s ease, transform .12s ease;}
.check-item.done .box{background:var(--teal);}
.check-item.done .box svg{opacity:1;transform:scale(1);}
.check-item.done span.txt{color:var(--muted);text-decoration:line-through;text-decoration-color:var(--line);}
.check-item span.txt{font-size:15px;}
.check-item span.txt b{font-weight:600;color:var(--ink);}

/* ---------- Callouts ---------- */
.callout{
  background:var(--paper-deep);
  border-left:3px solid var(--teal);
  border-radius:0 4px 4px 0;
  padding:16px 18px;
  margin-top:14px;
  font-size:14.5px;
}
.callout .lbl{
  font-family:'IBM Plex Mono',monospace;
  font-size:11.5px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--teal-deep);
  display:block;
  margin-bottom:6px;
}
.callout p{margin:0;color:var(--ink);}
.callout a{color:var(--teal-deep);}

footer{
  padding:36px 0 56px;
  text-align:center;
}
footer p{
  font-family:'IBM Plex Mono',monospace;
  font-size:12.5px;
  color:var(--muted);
  margin:0;
}

@media (max-width:640px){
  .stamp{display:none;}
  nav.tabs a{padding:14px 12px;font-size:12px;}
}