:root{
  --primary-blue:#1a73e8;
  --surface-bg:#f8f9fa;
  --card:#ffffff;
  --ink:#202124;
  --muted:#5f6368;
  --line:#dadce0;
  --accent:var(--primary-blue);
  --accent2:#0b57d0;
  --shadow:0 10px 20px rgba(0,0,0,.08);
  --radius:14px;
  --max:1120px;
  --mono:'Roboto Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font:16px/1.55 ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color:var(--ink);
  background:var(--surface-bg);
}
a{color:var(--accent); text-decoration:none}
a:hover{color:var(--accent2); text-decoration:underline}
:focus{outline:3px solid rgba(26,115,232,.28); outline-offset:2px}

.wrap{max-width:var(--max); margin:0 auto; padding:22px}
.header{
  background:rgba(255,255,255,.78);
  backdrop-filter:saturate(150%) blur(8px);
  border-bottom:1px solid var(--line);
  position:sticky; top:0; z-index:50;
}
.brand{display:flex; gap:14px; align-items:center}
.mark{
  width:44px; height:44px; border-radius:14px;
  background:#fff url("/assets/brand/mark.svg") center/contain no-repeat;
  box-shadow:var(--shadow);
}
.brand h1{margin:0; font-size:16px; letter-spacing:.2px}
.brand .sub{margin:0; color:var(--muted); font-size:13px}

.nav{display:flex; flex-wrap:wrap; gap:10px; margin-top:14px}
.nav a{
  display:inline-flex; align-items:center;
  padding:9px 12px;
  border:1px solid var(--line);
  border-radius:999px;
  background:#fff;
  color:var(--ink);
  transition:transform .18s ease, box-shadow .18s ease;
}
.nav a[aria-current="page"]{
  border-color:rgba(31,95,191,.35);
  box-shadow:0 10px 18px rgba(20,26,34,.06);
}
.nav a:hover{
  transform:translateY(-1px);
  box-shadow:0 10px 18px rgba(20,26,34,.06);
  text-decoration:none;
}

.main{padding:26px 0 46px}
.hero{
  display:grid; gap:16px;
  padding:22px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:linear-gradient(180deg, rgba(255,255,255,.9), rgba(255,255,255,.75));
  box-shadow:var(--shadow);
}
.kicker{color:var(--muted); font-size:13px; margin:0}
.hero h2{margin:0; font-size:30px; line-height:1.12; letter-spacing:-.3px}
.hero p{margin:0; color:#1f2937; max-width:72ch}

.grid{
  display:grid; gap:16px;
  grid-template-columns:repeat(12, 1fr);
  margin-top:18px;
}
.card{
  grid-column:span 12;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:18px;
  box-shadow:0 10px 22px rgba(20,26,34,.05);
}
@media (min-width: 860px){
  .card.half{grid-column:span 6}
}
.card h3{margin:0 0 10px; font-size:18px}
.card p{margin:0; color:var(--muted)}
.hr{height:1px; background:var(--line); margin:22px 0}

.section h3{margin:0 0 10px; font-size:18px}
.section p{margin:0 0 10px; color:#1f2937; max-width:78ch}
.section ul{margin:0; padding-left:18px; color:#1f2937; max-width:78ch}

.badge{
  display:inline-flex; gap:8px; align-items:center;
  font-size:12px; color:#0f172a;
  padding:6px 10px; border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.7);
}
.badge .dot{width:8px; height:8px; border-radius:999px; background:#2b7a9a}

.note{
  padding:14px 16px;
  border-left:3px solid rgba(31,95,191,.45);
  background:rgba(31,95,191,.06);
  border-radius:12px;
  color:#0f172a;
  max-width:80ch;
}

.ad{
  border:1px dashed rgba(20,26,34,.25);
  border-radius:16px;
  padding:14px 16px;
  margin:18px 0;
  color:var(--muted);
  background:rgba(255,255,255,.55);
}
.ad strong{color:var(--ink)}

.footer{
  border-top:1px solid var(--line);
  background:rgba(255,255,255,.55);
}
.footer p{margin:10px 0; color:var(--muted); font-size:13px}
.small{font-size:13px; color:var(--muted)}

.table{width:100%; border-collapse:collapse; margin-top:10px; font-size:14px}
.table th,.table td{padding:10px; vertical-align:top; border-bottom:1px solid var(--line)}
.table th{color:#0f172a; font-weight:600}
/* Typography helpers */
.mono{font-family:var(--mono)}
.small{font-size:13px; color:var(--muted)}
.muted{color:var(--muted)}

/* Header subtle grid pattern for "engineering" feel */
.header{
  background-color: rgba(255,255,255,.92);
  background-image: radial-gradient(rgba(218,220,224,.7) 1px, transparent 1px);
  background-size: 22px 22px;
  border-bottom:1px solid var(--line);
  position:sticky; top:0; z-index:1000;
  backdrop-filter:saturate(160%) blur(10px);
}

/* Brand wordmark: VAT bold + REGISTRY light */
.brand h1{
  font-size:16px;
  letter-spacing:.3px;
  font-weight:800;
}
.brand h1 .light{font-weight:300; color:var(--muted)}

/* Trust banner */
.trust-banner{
  display:flex; gap:10px; align-items:flex-start;
  padding:12px 14px;
  border:1px solid rgba(26,115,232,.25);
  background:rgba(232,240,254,.65);
  border-radius:12px;
  color:var(--ink);
}
.trust-banner .tag{
  font-family:var(--mono);
  font-weight:800;
  letter-spacing:.8px;
  font-size:12px;
  padding:3px 8px;
  border-radius:999px;
  background:#fff;
  border:1px solid rgba(26,115,232,.25);
}
.trust-banner p{margin:0; font-size:13px; color:var(--muted)}

/* Hero search */
.hero-search-wrapper{display:grid; gap:10px; max-width:620px}
.search-box{
  display:flex; gap:10px; align-items:center;
  background:#fff;
  border:1px solid var(--line);
  border-radius:999px;
  padding:10px 14px;
  box-shadow:0 2px 10px rgba(0,0,0,.04);
}
.search-box input{
  border:0; outline:none; width:100%;
  font-size:15px;
}
.search-icon{font-size:16px; color:var(--muted)}
.jump-listbox{
  list-style:none; margin:0; padding:6px;
  border:1px solid var(--line);
  border-radius:12px;
  background:#fff;
  box-shadow:0 12px 28px rgba(0,0,0,.10);
}
.jump-listbox li a{
  display:flex; gap:10px; align-items:center;
  padding:10px 10px;
  border-radius:10px;
  color:var(--ink);
}
.jump-listbox li a:hover{background:#f1f3f4; text-decoration:none}
.jump-listbox .flag{
  font-family:var(--mono);
  font-weight:900;
  background:#e8f0fe;
  color:var(--primary-blue);
  padding:3px 7px;
  border-radius:8px;
}

/* Data badge */
.data-badge{
  font-family:var(--mono);
  background:#e8f0fe;
  color:var(--primary-blue);
  border:1px solid rgba(26,115,232,.25);
  padding:3px 7px;
  border-radius:8px;
  font-weight:900;
  font-size:12px;
  letter-spacing:.6px;
}

/* Tables that feel like SaaS grids */
.table{
  width:100%;
  border-collapse:separate;
  border-spacing:0;
  background:#fff;
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
  box-shadow:0 2px 12px rgba(0,0,0,.04);
}
.table th{
  background:#f1f3f4;
  color:var(--muted);
  font-weight:700;
  text-transform:uppercase;
  font-size:11px;
  letter-spacing:1px;
  padding:12px 14px;
  text-align:left;
}
.table td{
  border-top:1px solid #eef0f2;
  padding:12px 14px;
  vertical-align:top;
}
.table tr:hover td{background:#fbfbfb}
.copy{
  border:1px solid var(--line);
  background:#fff;
  border-radius:10px;
  padding:6px 10px;
  font-weight:700;
  cursor:pointer;
  margin-right:8px;
}
.copy:hover{border-color:rgba(26,115,232,.45)}

/* Buttons */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:10px 14px;
  border-radius:12px;
  border:1px solid rgba(26,115,232,.25);
  background:var(--primary-blue);
  color:#fff;
  font-weight:800;
  text-decoration:none;
}
.btn:hover{background:var(--accent2); text-decoration:none}
.btn.ghost{background:#fff; color:var(--ink); border:1px solid var(--line)}
.btn.small{padding:8px 10px; border-radius:10px; font-weight:800}

/* Syntax checker result pill */
.pill{
  display:inline-flex;
  padding:8px 12px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  font-weight:800;
}
.pill.ok{border-color:rgba(24,128,56,.25); background:rgba(231,248,237,.85)}
.pill.bad{border-color:rgba(217,48,37,.25); background:rgba(252,232,230,.85)}
.grid-2{display:grid; grid-template-columns:1fr 1fr; gap:12px; margin-top:10px}
.k{font-size:11px; color:var(--muted); text-transform:uppercase; letter-spacing:1px; font-weight:800}
.v{font-size:14px}

/* Fat footer */
.footer-fat{
  margin-top:40px;
  border-top:1px solid var(--line);
  background:#fff;
}
.footer-grid{
  display:grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap:18px;
  padding-top:26px;
  padding-bottom:26px;
}
.footer-fat strong{display:block; margin-bottom:10px}
.footer-fat a{display:block; padding:6px 0; color:var(--ink)}
.footer-fat a:hover{color:var(--accent2); text-decoration:none}
.brand-small{font-family:var(--mono); font-weight:900; letter-spacing:1px}
@media (max-width: 860px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .grid-2{grid-template-columns:1fr}
}

.actions{display:flex; gap:10px; flex-wrap:wrap; margin-top:6px}