:root{
  --primary:#004861; --accent:#00b3d3; --ink:#16232b; --muted:#5b6b73;
  --line:#e2e9ec; --soft:#f2f7f9; --warn:#b26a00; --maxw:860px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; color:var(--ink); background:#fff;
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:17px; line-height:1.65;
}
a{color:#0284a5; text-decoration:none}
a:hover{text-decoration:underline}
strong{color:var(--ink)}

/* Banner */
.banner{
  color:#fff;
  background:
    radial-gradient(120% 120% at 88% 10%, rgba(0,179,211,.35) 0%, rgba(0,179,211,0) 55%),
    linear-gradient(150deg,#013847 0%,#004861 55%,#026079 100%);
  padding:48px 24px 40px;
  border-bottom:6px solid var(--accent);
}
.banner-inner{max-width:var(--maxw); margin:0 auto}
.banner .logo{width:190px; height:auto; display:block}
.banner .logo path{fill:#fff}
.kicker{
  margin-top:34px; text-transform:uppercase; letter-spacing:.28em;
  font-size:.72rem; font-weight:700; color:var(--accent);
}
.banner h1{font-size:2.4rem; line-height:1.1; margin:.35em 0 .3em; font-weight:800}
.banner .subtitle{font-size:1.08rem; color:rgba(255,255,255,.85); max-width:60ch; margin:0}
.meta{
  display:flex; flex-wrap:wrap; gap:10px 26px; margin-top:26px;
  padding-top:20px; border-top:1px solid rgba(255,255,255,.22);
}
.meta div{min-width:120px}
.meta .k{font-size:.66rem; text-transform:uppercase; letter-spacing:.13em; color:rgba(255,255,255,.6)}
.meta .v{font-weight:600; font-size:.95rem}

/* Layout */
main{max-width:var(--maxw); margin:0 auto; padding:8px 24px 64px}

/* On this page nav */
.toc{
  background:var(--soft); border:1px solid var(--line); border-radius:12px;
  padding:18px 22px; margin:34px 0 8px;
}
.toc h2{all:unset; display:block; font-size:.72rem; font-weight:700; text-transform:uppercase;
  letter-spacing:.14em; color:var(--muted); margin-bottom:10px}
.toc ol{margin:0; padding:0; list-style:none;
  display:grid; grid-template-columns:repeat(auto-fill,minmax(200px,1fr)); gap:4px 20px}
.toc li{margin:0}
.toc a{color:var(--ink); font-size:.95rem}
.toc .n{color:var(--accent); font-weight:700; margin-right:6px}

h2.sec{
  color:var(--primary); font-size:1.5rem; font-weight:700; line-height:1.2;
  margin:44px 0 14px; padding-bottom:8px; border-bottom:2px solid var(--accent);
  scroll-margin-top:16px;
}
h3{color:var(--ink); font-size:1.12rem; font-weight:700; margin:28px 0 8px}
p{margin:0 0 14px}
ul{margin:0 0 14px; padding-left:22px}
li{margin-bottom:8px}

/* Tables */
.table-wrap{overflow-x:auto; -webkit-overflow-scrolling:touch; margin:14px 0 22px;
  border:1px solid var(--line); border-radius:12px}
table{width:100%; border-collapse:collapse; font-size:.95rem}
table.wide{min-width:540px}            /* 3–4 column tables scroll rather than crush on mobile */
th,td{text-align:left; vertical-align:top; padding:12px 16px; border-bottom:1px solid var(--line); overflow-wrap:break-word}
tbody tr:last-child td{border-bottom:none}
thead th{background:var(--primary); color:#fff; font-weight:600; font-size:.78rem;
  text-transform:uppercase; letter-spacing:.05em; border-bottom:none}
tbody tr:nth-child(even){background:var(--soft)}
tbody tr:last-child td{border-bottom:none}

.note{border-left:4px solid var(--warn); background:#fff7ec; border-radius:0 10px 10px 0;
  padding:14px 18px; margin:22px 0; font-size:.95rem}
.note strong{color:var(--warn)}

.lede{font-size:1.12rem; color:var(--muted); border-left:4px solid var(--accent);
  padding-left:18px; margin:30px 0 8px}

footer{max-width:var(--maxw); margin:0 auto; padding:24px; border-top:1px solid var(--line);
  color:var(--muted); font-size:.85rem; display:flex; flex-wrap:wrap; gap:6px 24px; justify-content:space-between}

@media (max-width:640px){
  body{font-size:16px}
  .banner{padding:36px 18px 30px}
  .banner h1{font-size:1.9rem}
  .banner .logo{width:150px}
  main{padding:8px 18px 48px}
}