:root{
  --ink:#0b1b2b; --slate:#54677a; --mist:#eef6fe; --cloud:#fff;
  --line:#dde9f5; --accent:#2e9be6; --accent-2:#4fc3f7; --radius:16px; --maxw:760px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; color:var(--ink); background:var(--mist);
  font-family:Inter,system-ui,-apple-system,sans-serif; line-height:1.65;
  -webkit-font-smoothing:antialiased;
  background-image:
    radial-gradient(900px 500px at 85% -10%, rgba(79,195,247,.18), transparent 60%),
    radial-gradient(700px 480px at -10% 10%, rgba(46,155,230,.12), transparent 55%);
}
a{color:var(--accent)}
.wrap{max-width:var(--maxw); margin:0 auto; padding:0 24px}
nav{position:sticky; top:0; z-index:50; backdrop-filter:saturate(140%) blur(10px);
  background:rgba(238,246,254,.72); border-bottom:1px solid rgba(221,233,245,.7)}
nav .wrap{display:flex; align-items:center; gap:18px; height:64px; max-width:1080px}
.logo{display:flex; align-items:center; gap:10px; font-family:'Space Grotesk',sans-serif;
  font-weight:700; font-size:19px; color:var(--ink); text-decoration:none}
.logo .mark{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));box-shadow:0 6px 14px -6px var(--accent)}
.logo .mark svg{width:17px;height:17px}
nav .links{margin-left:auto; display:flex; gap:24px; align-items:center; font-size:14px; font-weight:500}
nav .links a{color:var(--slate); text-decoration:none}
nav .links a:hover{color:var(--ink)}
.btn{display:inline-flex; align-items:center; gap:8px; font-family:'Space Grotesk',sans-serif;
  font-weight:600; font-size:14px; text-decoration:none; padding:9px 15px; border-radius:11px;
  color:#fff; background:linear-gradient(135deg,var(--accent),var(--accent-2));
  box-shadow:0 14px 26px -12px var(--accent)}
main{padding:48px 0 64px}
.crumbs{font-size:13px; color:var(--slate); margin-bottom:18px}
.crumbs a{color:var(--slate); text-decoration:none}
.crumbs a:hover{color:var(--ink)}
h1{font-family:'Space Grotesk',sans-serif; font-weight:700; font-size:clamp(30px,5vw,42px);
  line-height:1.12; letter-spacing:-.02em; margin:0 0 10px}
h2{font-family:'Space Grotesk',sans-serif; font-weight:600; font-size:24px; margin:36px 0 10px}
h3{font-family:'Space Grotesk',sans-serif; font-weight:600; font-size:18px; margin:26px 0 8px}
.meta{font-size:13.5px; color:var(--slate); margin-bottom:28px}
p, li{color:#233a4f; font-size:16.5px}
.key{display:inline-flex; align-items:center; justify-content:center;
  font-family:'Space Mono',ui-monospace,monospace; font-weight:700; font-size:.85em;
  background:#fff; border:1px solid var(--line); border-bottom-width:3px; border-radius:8px;
  padding:.14em .45em; line-height:1.2; color:var(--ink)}
table{width:100%; border-collapse:collapse; margin:18px 0; background:#fff;
  border:1px solid var(--line); border-radius:12px; overflow:hidden; font-size:15px}
th,td{padding:10px 14px; text-align:left; border-bottom:1px solid var(--line)}
th{background:#f6fafe; font-family:'Space Grotesk',sans-serif; font-weight:600}
tr:last-child td{border-bottom:none}
.cta{margin:40px 0 8px; background:#0e1726; color:#e7eef7; border-radius:18px; padding:28px 26px}
.cta h2{color:#fff; margin:0 0 8px}
.cta p{color:#a9bccf; margin:0 0 16px}
.card-list{list-style:none; padding:0; margin:0; display:grid; gap:16px}
.card-list li{background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:20px 22px}
.card-list a.title{font-family:'Space Grotesk',sans-serif; font-weight:600; font-size:19px;
  color:var(--ink); text-decoration:none}
.card-list a.title:hover{color:var(--accent)}
.card-list p{margin:6px 0 0; font-size:15px; color:var(--slate)}
footer{margin-top:24px; border-top:1px solid var(--line); padding:26px 0; font-size:13.5px; color:var(--slate)}
footer .wrap{display:flex; gap:18px; flex-wrap:wrap; max-width:1080px}
footer a{color:var(--slate); text-decoration:none; border-bottom:1px solid var(--line)}
blockquote{margin:18px 0; padding:12px 18px; border-left:3px solid var(--accent);
  background:#fff; border-radius:0 12px 12px 0; color:var(--slate)}
code{font-family:'Space Mono',ui-monospace,monospace; font-size:.9em; background:#fff;
  border:1px solid var(--line); border-radius:6px; padding:.1em .35em}