:root {
  color-scheme: dark;
  --ink: #050607;
  --ink-soft: #0c1014;
  --paper: #f4f6f7;
  --muted: #aeb7bf;
  --line: rgba(255, 255, 255, 0.14);
  --glass: rgba(22, 28, 34, 0.7);
  --glass-strong: rgba(34, 42, 49, 0.86);
  --signal: #ffbd59;
  --signal-cool: #86d6ff;
  --radius: 28px;
}

* { box-sizing: border-box; }

html {
  background: var(--ink);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  color: var(--paper);
  background:
    radial-gradient(circle at 82% -5%, rgba(52, 134, 170, 0.26), transparent 34rem),
    radial-gradient(circle at 8% 25%, rgba(255, 166, 58, 0.13), transparent 30rem),
    linear-gradient(145deg, #020304 0%, #090c0f 52%, #040506 100%);
  font-family: "Avenir Next", "Helvetica Neue", sans-serif;
  font-size: 18px;
  line-height: 1.62;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 72px 72px;
  content: "";
  mask-image: linear-gradient(to bottom, black, transparent 75%);
}

a { color: inherit; }

a:focus-visible,
summary:focus-visible {
  outline: 4px solid var(--signal-cool);
  outline-offset: 5px;
  border-radius: 8px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 20;
  padding: 10px 16px;
  border-radius: 999px;
  color: #000;
  background: #fff;
  transform: translateY(-160%);
}

.skip-link:focus { transform: translateY(0); }

.shell {
  width: min(1180px, calc(100% - 44px));
  margin-inline: auto;
}

.site-header {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding-block: 26px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -.025em;
  text-decoration: none;
}

.brand img {
  width: 46px;
  height: 46px;
  border-radius: 13px;
  object-fit: contain;
  filter: drop-shadow(0 8px 20px rgba(255,255,255,.13));
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 7px;
}

.nav-links a {
  padding: 9px 15px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--muted);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  border-color: var(--line);
  color: #fff;
  background: rgba(255,255,255,.07);
}

.hero {
  display: grid;
  min-height: 650px;
  align-items: center;
  padding: 90px 0 110px;
}

.eyebrow {
  margin: 0 0 20px;
  color: var(--signal);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
}

h1, h2, h3 {
  margin-top: 0;
  line-height: 1.05;
  letter-spacing: -.045em;
}

h1 {
  max-width: 920px;
  margin-bottom: 28px;
  font-family: "Iowan Old Style", "Palatino Linotype", serif;
  font-size: clamp(54px, 8.6vw, 116px);
  font-weight: 600;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(36px, 5vw, 64px);
}

h3 {
  margin-bottom: 12px;
  font-size: 27px;
}

.lede {
  max-width: 790px;
  margin: 0;
  color: #c7cdd2;
  font-size: clamp(20px, 2.4vw, 28px);
  line-height: 1.5;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 38px;
}

.button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255,255,255,.08);
  box-shadow: inset 0 1px rgba(255,255,255,.13);
  font-weight: 750;
  text-decoration: none;
}

.button.primary {
  border-color: #fff;
  color: #050607;
  background: #fff;
}

.section { padding: 84px 0; }

.section-heading {
  max-width: 760px;
  margin-bottom: 40px;
}

.section-heading p,
.card p,
.prose p,
.prose li { color: var(--muted); }

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 18px;
}

.card {
  grid-column: span 4;
  min-height: 250px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(145deg, rgba(32,39,46,.78), rgba(11,14,17,.68));
  box-shadow: inset 0 1px rgba(255,255,255,.08), 0 30px 80px rgba(0,0,0,.2);
}

.provider {
  grid-column: span 6;
  min-height: 330px;
  padding: 38px;
}

.provider-mark {
  display: inline-flex;
  margin-bottom: 56px;
  padding: 9px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: #fff;
  background: rgba(255,255,255,.06);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.detail-list {
  margin: 20px 0 0;
  padding-left: 22px;
}

.prose {
  max-width: 850px;
  padding: 74px 0 110px;
}

.prose h1 { font-size: clamp(48px, 7vw, 86px); }
.prose h2 { margin-top: 60px; font-size: clamp(28px, 4vw, 42px); }
.prose h3 { margin-top: 36px; font-size: 24px; }
.prose strong { color: var(--paper); }
.prose a { text-decoration-thickness: 1px; text-underline-offset: 4px; }
.prose .meta { color: var(--signal); font-weight: 700; }

.notice {
  margin: 34px 0;
  padding: 24px 26px;
  border: 1px solid rgba(134,214,255,.3);
  border-radius: 20px;
  background: rgba(58,139,179,.09);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 38px 0 58px;
  border-top: 1px solid var(--line);
  color: #87919a;
  font-size: 14px;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

@media (max-width: 820px) {
  body { font-size: 17px; }
  .site-header { align-items: flex-start; flex-direction: column; }
  .nav-links { justify-content: flex-start; }
  .hero { min-height: auto; padding: 76px 0 84px; }
  .card, .provider { grid-column: 1 / -1; min-height: auto; }
  .provider-mark { margin-bottom: 34px; }
  .site-footer { flex-direction: column; }
}

@media (max-width: 520px) {
  .shell { width: min(100% - 28px, 1180px); }
  .nav-links a { padding: 7px 10px; }
  .card, .provider { padding: 24px; border-radius: 22px; }
  h1 { font-size: clamp(46px, 15vw, 70px); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}