:root{
  --ink:#092b63;
  --ink2:#3e5d7f;
  --blue:#0b63f6;
  --sky:#eef8ff;
  --line:#e4edf6;
  --card:#fff;
  --max:920px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);
  background:linear-gradient(180deg,#f3fbff 0,#fff 260px);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
img{display:block;max-width:100%}
.wrap{width:min(var(--max),calc(100% - 36px));margin:0 auto}
header{
  position:sticky;top:0;z-index:10;
  background:rgba(255,255,255,.9);
  backdrop-filter:blur(18px);
  border-bottom:1px solid var(--line);
}
.nav{
  min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px
}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink);font-weight:850;font-size:18px}
.brand:hover{text-decoration:none}
.brand img{width:42px;height:42px;border-radius:13px}
.back{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--ink2);font-weight:700;font-size:14px
}
main{padding:62px 0 80px}
.hero{
  margin-bottom:34px;padding:34px;border-radius:28px;
  background:linear-gradient(135deg,#e6f5ff,#f9fcff);
  border:1px solid #dceefa;
}
.kicker{
  display:inline-block;padding:6px 10px;border-radius:999px;
  background:#deefff;color:#0865c7;font-size:12px;font-weight:800;
  letter-spacing:.03em;text-transform:uppercase;margin-bottom:14px
}
h1{font-size:clamp(38px,6vw,62px);line-height:1.03;letter-spacing:-.045em;margin:0 0 14px}
h2{font-size:25px;line-height:1.2;letter-spacing:-.02em;margin:38px 0 12px}
h3{font-size:18px;margin:26px 0 8px}
p,li{color:#385879}
.lead{font-size:18px;max-width:760px;margin:0}
.updated{margin-top:16px;color:#6f8297;font-size:13px}
.card{
  background:#fff;border:1px solid var(--line);border-radius:24px;
  padding:30px;box-shadow:0 14px 45px rgba(11,70,140,.07)
}
ul,ol{padding-left:22px}
li+li{margin-top:8px}
.notice{
  margin:24px 0;padding:18px 20px;border-radius:16px;
  background:#f6faff;border:1px solid #dcecff;color:#315678
}
.notice strong{color:var(--ink)}
.faq{display:grid;gap:12px}
details{
  border:1px solid var(--line);background:#fff;border-radius:17px;padding:0 18px
}
summary{cursor:pointer;padding:18px 0;font-weight:800;color:var(--ink)}
details p{margin:0 0 18px}
.support-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.support-box{border:1px solid var(--line);border-radius:20px;padding:22px;background:#fff}
.support-box h3{margin-top:0}
footer{border-top:1px solid var(--line);padding:34px 0 44px;background:#fff}
.footer{
  display:flex;justify-content:space-between;align-items:flex-start;gap:30px;flex-wrap:wrap
}
.footer-links{display:flex;gap:16px 20px;flex-wrap:wrap;font-size:13px;font-weight:700}
.small{font-size:13px;color:#73869a;max-width:520px}
@media(max-width:650px){
  main{padding-top:38px}
  .hero,.card{padding:24px}
  .support-grid{grid-template-columns:1fr}
  .brand span{font-size:15px}
}