:root{
  --bg:#f5f7fb;
  --card:#ffffff;
  --text:#0f172a;
  --muted:#4b5563;
  --brand:#2563eb;
  --border: rgba(15,23,42,.08);
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Liberation Sans";
  background: #ffffff;
  color:var(--text);
}
a{color:inherit; text-decoration:none}
.container{max-width:1100px; margin:0 auto; padding:22px}
.nav{
  display:flex; align-items:center; justify-content:space-between;
  border:1px solid var(--border); background:rgba(255,255,255,.8);
  padding:12px 14px; border-radius:16px; backdrop-filter: blur(10px);
}
.brand{display:flex; gap:10px; align-items:center; font-weight:700}
.badge{font-size:12px; color:var(--muted); border:1px solid var(--border); padding:4px 8px; border-radius:999px}
.menu{display:flex; gap:14px; flex-wrap:wrap}
.menu a{color:var(--muted)}
.menu a:hover{color:var(--text)}
.hero{padding:26px 0 10px}
h1{font-size:42px; line-height:1.1; margin:0 0 10px}
p{color:var(--muted); line-height:1.6}
.grid{display:grid; gap:14px}
.grid.cards{grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); margin-top:14px}
.card{
  border:1px solid var(--border);
  background: var(--card);
  border-radius:18px;
  padding:16px;
}
.card h3{margin:0 0 8px}
.card p{margin:0 0 12px}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:10px 14px; border-radius:12px;
  border:1px solid var(--border); background: rgba(37,99,235,.08);
  color:var(--text); cursor:pointer;
}
.btn:hover{background: rgba(37,99,235,.14)}
.btn.secondary{background: rgba(15,23,42,.04)}
.input{
  width:100%; padding:10px 12px; border-radius:12px;
  border:1px solid var(--border); background: #fff;
  color:var(--text);
}
.sr-only{
  position:absolute;
  width:1px;
  height:1px;
  padding:0;
  margin:-1px;
  overflow:hidden;
  clip: rect(0,0,0,0);
  border:0;
}
.mt-10{margin-top:10px}
.mt-14{margin-top:14px}
.title{font-size:30px; margin:0 0 8px}
.max-220{max-width:220px}
.dropzone{
  border:2px dashed rgba(15,23,42,.18);
  border-radius:18px;
  padding:22px;
  min-height:180px;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  background:#fff;
  color:var(--muted);
  cursor:pointer;
  transition: border-color .2s ease, background .2s ease, color .2s ease;
}
.dropzone strong{color:var(--text)}
.dropzone.dragover{
  border-color: var(--brand);
  background: rgba(37,99,235,.06);
  color: var(--text);
}
.progress{
  height:8px;
  background: rgba(15,23,42,.08);
  border-radius:999px;
  overflow:hidden;
  margin-top:10px;
}
.progress-bar{
  height:100%;
  width:0%;
  background: var(--brand);
  transition: width .2s ease;
}
.row{display:flex; gap:10px; flex-wrap:wrap}
.kpi{font-size:13px; color:var(--muted)}
hr{border:0; border-top:1px solid var(--border); margin:18px 0}
.footer{margin-top:28px; color:var(--muted); font-size:13px}
.notice{font-size:13px; color:var(--muted); border:1px solid var(--border); padding:10px 12px; border-radius:12px; background: rgba(15,23,42,.03)}
.small{font-size:13px}
code{background: rgba(15,23,42,.06); padding:2px 6px; border-radius:8px}