:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --panel: #ffffff;
  --ink: #0f172a;
  --muted: #526078;
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --green: #059669;
  --green-soft: #d1fae5;
  --red: #dc2626;
  --line: #dfe5ef;
  --shadow: 0 24px 70px rgba(15, 23, 42, .10);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 82% 0, rgba(37, 99, 235, .13), transparent 28rem),
    linear-gradient(180deg, #f9fbff 0, var(--bg) 32rem);
  font: 17px/1.72 system-ui, -apple-system, "Segoe UI", sans-serif;
}
a { color: var(--blue-dark); text-underline-offset: .18em; }
a:hover { color: var(--blue); }

.hero {
  max-width: 1080px;
  margin: auto;
  padding: 70px 24px 42px;
  display: flex;
  align-items: center;
  gap: 30px;
}
.brand-mark {
  width: 132px;
  height: 132px;
  flex: none;
  display: grid;
  place-items: center;
  border-radius: 34px;
  background: linear-gradient(145deg, #3478f6, var(--blue-dark));
  box-shadow: 0 24px 50px rgba(37, 99, 235, .28);
}
.brand-mark svg { width: 106px; height: 106px; }
.brand-mark .shield { fill: #fff; }
.brand-mark .phone { fill: var(--blue); }
.brand-mark .cross { fill: #ef4444; }
.eyebrow {
  margin: 0 0 5px;
  color: var(--blue);
  font-size: .9rem;
  font-weight: 850;
  letter-spacing: .18em;
}
h1 {
  margin: 0;
  max-width: 780px;
  font-size: clamp(2.55rem, 7vw, 5.2rem);
  line-height: 1.03;
  letter-spacing: -.055em;
}
.lead { margin: 12px 0 20px; color: var(--muted); font-size: clamp(1.1rem, 2.5vw, 1.45rem); }
.trust-row { display: flex; flex-wrap: wrap; gap: 9px; }
.trust-row span {
  padding: 7px 13px;
  color: #047857;
  background: var(--green-soft);
  border: 1px solid #a7f3d0;
  border-radius: 999px;
  font-size: .88rem;
  font-weight: 700;
}

nav {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  justify-content: center;
  gap: 10px;
  padding: 11px;
  border-block: 1px solid rgba(203, 213, 225, .82);
  background: rgba(245, 247, 251, .86);
  backdrop-filter: blur(16px);
}
nav a {
  min-width: 108px;
  padding: 6px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  text-align: center;
  text-decoration: none;
  font-weight: 700;
  box-shadow: 0 3px 12px rgba(15, 23, 42, .04);
}

main {
  max-width: 1080px;
  margin: 34px auto 82px;
  padding: 0 24px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
}
article {
  min-width: 0;
  scroll-margin-top: 86px;
  padding: clamp(26px, 5vw, 58px);
  border: 1px solid var(--line);
  border-radius: 30px;
  background: rgba(255, 255, 255, .96);
  box-shadow: var(--shadow);
}
article p, article a, article code { overflow-wrap: anywhere; }
.meta {
  display: inline-block;
  margin: 0 0 14px;
  padding: 6px 12px;
  color: var(--muted);
  background: var(--bg);
  border-radius: 8px;
  font-size: .88rem;
}
h2 { margin: 0 0 1.25em; color: var(--blue-dark); font-size: clamp(2rem, 5vw, 2.8rem); letter-spacing: -.035em; }
h3 { margin: 2.05em 0 .45em; font-size: 1.2rem; }
p { max-width: 82ch; }
code { padding: .15em .38em; border-radius: 6px; background: #eef2ff; font-size: .9em; }
footer {
  padding: 34px 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  text-align: center;
  font-size: .9rem;
}
footer span { white-space: nowrap; }

@media (max-width: 680px) {
  body { font-size: 16px; }
  .hero { padding-top: 44px; align-items: flex-start; gap: 18px; }
  .brand-mark { width: 82px; height: 82px; border-radius: 23px; }
  .brand-mark svg { width: 68px; height: 68px; }
  .eyebrow { font-size: .75rem; letter-spacing: .13em; }
  .trust-row { display: none; }
  article { border-radius: 22px; }
  h2 { font-size: 1.65rem; letter-spacing: -.045em; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}