:root {
  --ink: #121820;
  --ink-2: #314152;
  --muted: #607084;
  --line: #dce3ea;
  --soft: #f4f8fb;
  --blue: #1664d9;
  --cyan: #1aaebf;
  --amber: #f2a63b;
  --green: #21885f;
  --max: 1120px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font-size: 16px;
  line-height: 1.6;
}
a { color: inherit; }
.topbar {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, .94);
  position: sticky;
  top: 0;
  z-index: 4;
  backdrop-filter: blur(16px);
}
.nav {
  width: min(var(--max), calc(100% - 32px));
  min-height: 68px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand {
  text-decoration: none;
  font-weight: 900;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: #0b1220;
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 900;
}
.nav-links {
  display: flex;
  gap: 18px;
  color: var(--ink-2);
  font-size: 14px;
  font-weight: 800;
}
.nav-links a { text-decoration: none; }
.btn {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 16px;
  border-radius: 7px;
  text-decoration: none;
  font-weight: 900;
  line-height: 1;
}
.btn-primary {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 12px 24px rgba(22,100,217,.22);
}
.btn-secondary {
  border: 1px solid var(--line);
  background: #fff;
}
.hero {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  padding: 72px 0 44px;
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 46px;
  align-items: end;
}
.hero h1 {
  margin: 0;
  font-size: clamp(40px, 6vw, 68px);
  line-height: .98;
  letter-spacing: 0;
}
.hero p {
  max-width: 720px;
  margin: 18px 0 0;
  color: var(--ink-2);
  font-size: 18px;
}
.summary-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
  background: var(--soft);
}
.summary-card strong {
  display: block;
  font-size: 34px;
  line-height: 1;
}
.summary-card span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-weight: 700;
}
.section {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  padding: 54px 0;
}
.section-head {
  max-width: 760px;
  margin-bottom: 26px;
}
.section-head h2 {
  margin: 0;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.06;
}
.section-head p {
  margin: 12px 0 0;
  color: var(--muted);
}
.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.tool {
  min-height: 230px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
  background: #fff;
  box-shadow: 0 10px 24px rgba(11,18,32,.06);
}
.tool h3 {
  margin: 0;
  font-size: 21px;
  line-height: 1.2;
}
.tool p {
  margin: 10px 0 0;
  color: var(--muted);
}
.tool ul {
  margin: 16px 0 0;
  padding-left: 19px;
  color: var(--ink-2);
}
.tool li + li { margin-top: 6px; }
.wide-band {
  background: #0b1220;
  color: #fff;
  margin-top: 34px;
}
.wide-band .section { padding: 60px 0; }
.wide-band p { color: #b7c5d6; }
.list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 26px;
}
.list a {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 18px;
  border: 1px solid rgba(255,255,255,.13);
  border-radius: 8px;
  background: rgba(255,255,255,.08);
  color: #fff;
  text-decoration: none;
  font-weight: 900;
}
.note {
  border-left: 4px solid var(--amber);
  padding: 18px 20px;
  background: #fff8ed;
  color: var(--ink-2);
  border-radius: 0 8px 8px 0;
}
.footer {
  border-top: 1px solid var(--line);
  background: var(--soft);
  padding: 30px 0;
  color: var(--muted);
}
.footer-inner {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.footer a {
  color: var(--ink);
  font-weight: 900;
  text-decoration: none;
}
@media (max-width: 860px) {
  .hero,
  .grid,
  .list { grid-template-columns: 1fr; }
  .nav { align-items: flex-start; flex-direction: column; padding: 15px 0; }
  .nav-links { flex-wrap: wrap; gap: 12px; }
}