:root {
  --bg: #FFFFFF;
  --ink: #111111;
  --brand: #2A1647;
  --slate: #4B5563;
  --muted: var(--slate);
  --faint: #5F6670;
  --line: #E5E7EB;
  --fill: #F5F5F5;
  --fill-strong: #EBEBEB;
  --chip: #E5E7EB;
  --accent: var(--brand);
  --accent-ink: #FFFFFF;
  --warn: #6B4E00;
  --warn-fill: #F6EBC8;
  --error: #A32A1E;
  --radius: 12px;
  --radius-small: 6px;
  --sans: Arial, Helvetica, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --section: 72px;
  --gutter: 24px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 16px/1.4 var(--sans);
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, p, ul, ol, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }

h1 { font-size: clamp(34px, 4.4vw, 48px); font-weight: 400; line-height: 1.2; letter-spacing: 0; }
h2 { font-size: 24px; font-weight: 400; line-height: 1.2; letter-spacing: 0; color: var(--brand); }
h3 { font-size: 18px; font-weight: 400; line-height: 1.2; }

a { color: inherit; }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; border-radius: 4px; }

.mono { font-family: var(--mono); letter-spacing: 0; }
.wrap { width: 100%; max-width: calc(1200px + 2 * var(--gutter)); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: var(--section); }

.head { margin-bottom: 32px; }
.head__label { margin-bottom: 6px; font-size: 14px; line-height: 1.2; color: var(--faint); }

.label { display: block; margin-bottom: 8px; font: 400 12px/1 var(--mono); text-transform: uppercase; color: var(--faint); }
.hint { font-size: 14px; line-height: 1.3; color: var(--faint); }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; z-index: 30; background: var(--brand); color: var(--bg); padding: 8px 12px; }
.noscript { padding: 12px 20px; background: var(--warn-fill); color: var(--warn); font-size: 14px; text-align: center; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 24px;
  border: 0;
  border-radius: 10px;
  font: 500 16px/1 var(--sans);
  letter-spacing: 0.01em;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
}
.btn--primary { background: var(--slate); color: var(--fill-strong); }
.btn--primary:hover { background: var(--brand); }
.btn--soft { background: var(--fill-strong); color: var(--brand); }
.btn--soft:hover { background: var(--chip); }
.btn--small { min-height: 36px; padding: 0 16px; font-size: 14px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn__arrow { display: grid; place-items: center; width: 16px; height: 16px; border: 1px solid currentColor; border-radius: 50%; font-size: 10px; line-height: 1; }

.chip {
  display: inline-block;
  padding: 3px 6px;
  border-radius: var(--radius-small);
  background: var(--fill-strong);
  color: var(--slate);
  font: 400 12px/1 var(--mono);
  text-transform: uppercase;
  white-space: nowrap;
}
.chip--strong { background: var(--chip); }

.state-loading, .state-error { padding: 32px; color: var(--faint); }
.state-error { color: var(--error); }

@media (max-width: 900px) {
  :root { --section: 48px; --gutter: 20px; }
  html { scroll-padding-top: 124px; }
  .btn { min-height: 44px; }
}

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