:root {
  color-scheme: light dark;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
  --ink: #17202d;
  --muted: #5d6877;
  --paper: #f6f8fc;
  --surface: rgba(255, 255, 255, 0.82);
  --line: rgba(31, 52, 84, 0.14);
  --brand: #1468ff;
  --brand-dark: #0747bb;
  --focus: #005fcc;
  --shadow: 0 24px 70px rgba(36, 66, 112, 0.14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 4%, rgba(20, 104, 255, 0.14), transparent 28rem),
    radial-gradient(circle at 92% 18%, rgba(255, 159, 10, 0.12), transparent 24rem),
    var(--paper);
}
a { color: var(--brand-dark); text-underline-offset: 0.18em; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible { border-radius: 4px; outline: 3px solid var(--focus); outline-offset: 4px; }
.shell { width: min(840px, calc(100% - 40px)); margin: 0 auto; padding: 32px 0 72px; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 48px; }
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--ink); font-weight: 760; text-decoration: none; }
.brand-mark { position: relative; width: 36px; height: 36px; border-radius: 11px; background: linear-gradient(145deg, #3f8cff, #0757e7); box-shadow: 0 8px 20px rgba(20, 104, 255, 0.28); }
.brand-mark::before { position: absolute; inset: 8px; content: ""; border: 2px solid #fff; border-radius: 50%; }
.brand-mark::after { position: absolute; top: 10px; left: 17px; width: 2px; height: 9px; content: ""; background: #fff; border-radius: 2px; transform: rotate(35deg); transform-origin: bottom; }
.company-link { color: var(--muted); font-size: 14px; font-weight: 650; text-decoration: none; }
.hero { padding: 92px 0 54px; }
.eyebrow { margin: 0 0 12px; color: var(--brand-dark); font-size: 13px; font-weight: 800; letter-spacing: 0.13em; text-transform: uppercase; }
h1 { max-width: 760px; margin: 0; font-size: clamp(42px, 8vw, 76px); line-height: 0.98; letter-spacing: -0.055em; }
.lead { max-width: 680px; margin: 24px 0 0; color: var(--muted); font-size: clamp(19px, 3vw, 23px); line-height: 1.55; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 20px; color: #fff; background: var(--brand); border-radius: 14px; box-shadow: 0 10px 28px rgba(20, 104, 255, 0.24); font-weight: 750; text-decoration: none; }
.button.secondary { color: var(--ink); background: var(--surface); border: 1px solid var(--line); box-shadow: none; }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin: 18px 0; }
.card, .support-box, .document { border: 1px solid var(--line); background: var(--surface); box-shadow: var(--shadow); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); }
.card { display: block; min-height: 180px; padding: 26px; color: var(--ink); border-radius: 24px; text-decoration: none; transition: transform 160ms ease, border-color 160ms ease; }
.card:hover { border-color: rgba(20, 104, 255, 0.45); transform: translateY(-3px); }
.card h2, .support-box h2 { margin: 0 0 10px; font-size: 24px; }
.card p, .support-box p, .support-box li { color: var(--muted); line-height: 1.65; }
.support-box { margin-top: 36px; padding: 30px; border-radius: 26px; }
.support-box ol { margin: 14px 0 0; padding-left: 24px; }
.support-box li + li { margin-top: 8px; }
.document { margin-top: 48px; padding: clamp(24px, 6vw, 54px); border-radius: 28px; }
.document h1 { max-width: none; font-size: clamp(38px, 7vw, 58px); }
.updated { margin: 12px 0 34px; color: var(--muted); }
.summary { margin: 0 0 32px; padding: 20px; border-left: 4px solid var(--brand); background: rgba(20, 104, 255, 0.08); border-radius: 0 14px 14px 0; line-height: 1.65; }
.document h2 { margin: 36px 0 10px; font-size: 24px; letter-spacing: -0.02em; }
.document h3 { margin: 24px 0 8px; font-size: 18px; }
.document p, .document li { line-height: 1.72; }
.document ul { padding-left: 24px; }
.document li + li { margin-top: 8px; }
address { font-style: normal; line-height: 1.7; }
footer { margin-top: 52px; padding-top: 22px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; line-height: 1.65; }
footer nav { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-bottom: 14px; }

@media (max-width: 640px) {
  .shell { width: min(100% - 28px, 840px); padding-top: 18px; }
  .hero { padding-top: 66px; }
  .grid { grid-template-columns: 1fr; }
  .document { margin-top: 30px; border-radius: 22px; }
}

@media (prefers-color-scheme: dark) {
  :root { --ink: #f4f7fc; --muted: #b5bfcd; --paper: #0c111b; --surface: rgba(24, 31, 45, 0.86); --line: rgba(218, 230, 248, 0.15); --brand: #5e9cff; --brand-dark: #8db8ff; --focus: #8db8ff; --shadow: 0 24px 70px rgba(0, 0, 0, 0.22); }
  body { background: radial-gradient(circle at 8% 4%, rgba(35, 101, 219, 0.25), transparent 28rem), radial-gradient(circle at 92% 18%, rgba(171, 100, 0, 0.18), transparent 24rem), var(--paper); }
  .button { color: #07111f; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .card { transition: none; }
}