:root {
  --p: #1E6BFF; --bg: #F4F7FC; --b: #E3E8F0; --t: #10131A; --m: #6B7487; --y: #F5B301;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: #fff; color: var(--t);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}
a { color: var(--p); }
header.top {
  position: sticky; top: 0; z-index: 10; background: rgba(255,255,255,.92);
  backdrop-filter: blur(8px); border-bottom: 1px solid var(--b);
}
.bar { max-width: 960px; margin: auto; padding: 14px 20px; display: flex; align-items: center; gap: 20px; }
.logo { font-size: 22px; font-weight: 800; font-style: italic; color: var(--p); text-decoration: none; letter-spacing: -.5px; }
.bar nav { margin-left: auto; display: flex; gap: 18px; flex-wrap: wrap; }
.bar nav a { color: var(--m); text-decoration: none; font-size: 15px; }
.bar nav a:hover, .bar nav a[aria-current] { color: var(--t); }
main { max-width: 760px; margin: auto; padding: 32px 20px 72px; }
main.wide { max-width: 960px; }
h1 { font-size: 34px; line-height: 1.2; letter-spacing: -.8px; margin: 0 0 8px; }
h2 { font-size: 21px; margin: 36px 0 10px; letter-spacing: -.3px; }
h3 { font-size: 17px; margin: 22px 0 6px; }
.lead { font-size: 18px; color: var(--m); margin: 0 0 28px; }
.updated { color: var(--m); font-size: 14px; margin: 0 0 32px; }
ul { padding-left: 22px; }
li { margin: 5px 0; }
table { width: 100%; border-collapse: collapse; margin: 14px 0; font-size: 15px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--b); vertical-align: top; }
th { color: var(--m); font-weight: 600; }
.box { background: var(--bg); border-radius: 14px; padding: 18px 20px; margin: 20px 0; }
.box.warn { background: #FFF6DC; border: 1px solid #F1D58A; }
.hero { padding: 56px 0 8px; }
.hero h1 { font-size: 44px; }
.feats { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin: 36px 0; }
.feat { background: var(--bg); border-radius: 16px; padding: 20px; }
.feat b { display: block; margin-bottom: 4px; font-size: 17px; }
.feat span { color: var(--m); font-size: 15px; }
.btns { display: flex; gap: 12px; flex-wrap: wrap; margin: 28px 0; }
.btn {
  display: inline-block; background: var(--p); color: #fff; text-decoration: none;
  padding: 13px 22px; border-radius: 12px; font-weight: 600; border: 0; font-size: 16px; cursor: pointer;
}
.btn.ghost { background: var(--bg); color: var(--t); }
.btn.red { background: #E5484D; }
.btn:disabled { opacity: .5; cursor: default; }
label { display: block; margin: 16px 0 6px; font-size: 14px; color: var(--m); }
input { width: 100%; padding: 13px 14px; border: 1px solid var(--b); border-radius: 12px; font: inherit; }
.msg { margin: 16px 0; padding: 13px 16px; border-radius: 12px; font-size: 15px; }
.msg.err { background: #FDECEC; color: #B4272B; }
.msg.ok { background: #E7F7EE; color: #1B6B3A; }
footer { border-top: 1px solid var(--b); color: var(--m); font-size: 14px; }
footer .bar { display: block; padding: 28px 20px 48px; }
footer a { color: var(--m); margin-right: 18px; }
@media (max-width: 560px) { h1 { font-size: 28px; } .hero h1 { font-size: 34px; } main { padding-top: 24px; } }
.muted { color: var(--m); font-size: 14px; }