:root {
  --paper: #f6f7f2;
  --ink: #202b24;
  --muted: #626d62;
  --green: #274737;
  --accent: #597547;
  --line: #d9ded4;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  color-scheme: light;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
  -webkit-font-smoothing: antialiased;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 32px; }
body { margin: 0; }
a { color: inherit; text-decoration: none; }
svg { display: block; }
::selection { color: var(--paper); background: var(--green); }
:focus-visible { outline: 2px solid var(--green); outline-offset: 6px; }
.page-shell { max-width: 1440px; margin: 0 auto; padding: 0 6%; }
.skip-link { position: absolute; top: 12px; left: 12px; z-index: 5; padding: 14px 20px; background: var(--ink); color: var(--paper); transform: translateY(-180%); }
.skip-link:focus { transform: translateY(0); }
.site-header { min-height: 104px; display: flex; align-items: center; justify-content: space-between; gap: 24px; border-bottom: 1px solid var(--line); }
.wordmark { display: inline-flex; align-items: center; font-size: 27px; letter-spacing: -1.1px; font-weight: 650; }
.brand-mark { width: 30px; height: 30px; margin-right: 11px; color: var(--green); }
.wordmark-light { font-weight: 400; margin-left: 5px; }
.brand-period, .accent { color: var(--accent); }
.purpose-link { display: inline-flex; align-items: center; gap: 24px; padding: 12px 0; font-size: 12px; }
.purpose-link:hover, .back-to-top:hover { color: var(--accent); }
.purpose-link span { font-size: 18px; }
.hero { padding: 82px 0 76px; text-align: center; }
.eyebrow { font-family: var(--mono); font-size: 10px; font-weight: 400; line-height: 1.6; letter-spacing: 1.1px; text-transform: uppercase; }
.hero .eyebrow { margin: 0 0 28px; color: var(--muted); }
h1 { display: flex; align-items: baseline; justify-content: center; gap: .13em; margin: 0 0 38px; font-size: clamp(96px, 16vw, 216px); font-weight: 400; line-height: 1.1; letter-spacing: -.075em; }
.data { letter-spacing: -.08em; }
.plus { align-self: center; color: var(--muted); font-size: .36em; font-weight: 300; letter-spacing: 0; }
.ux { color: var(--green); font-family: Georgia, "Times New Roman", serif; font-style: italic; letter-spacing: -.085em; padding-right: .08em; }
.hero-description { margin: 0; font-size: clamp(22px, 2.3vw, 32px); font-weight: 400; line-height: 1.4; letter-spacing: -.035em; }
.about { display: grid; grid-template-columns: 1fr 1.5fr; gap: 40px; align-items: start; padding: 48px 0; border-top: 1px solid var(--line); }
.about h2 { margin: 5px 0 0; }
.about p { max-width: 560px; margin: 0; color: var(--muted); font-size: 17px; line-height: 1.75; letter-spacing: -.2px; }
.site-footer { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 26px 0; border-top: 1px solid var(--line); }
.footer-name { font-size: 18px; font-weight: 500; letter-spacing: -.8px; }
.site-footer p { color: var(--muted); font-size: 11px; margin: 0; }
.back-to-top { font-family: var(--mono); font-size: 9px; padding: 10px 0; }
.back-to-top span { margin-left: 16px; font-size: 15px; }

@media (max-width: 600px) {
  .site-header { min-height: 86px; gap: 16px; }
  .wordmark { font-size: 23px; }
  .brand-mark { width: 25px; height: 25px; margin-right: 8px; }
  .purpose-link { gap: 12px; font-size: 11px; }
  .hero { padding: 72px 0 64px; }
  .hero .eyebrow { font-size: 8px; margin-bottom: 28px; }
  h1 { font-size: clamp(76px, 17vw, 102px); margin-bottom: 32px; }
  .hero-description { font-size: 24px; }
  .about { grid-template-columns: 1fr; gap: 18px; padding: 32px 0; }
  .about h2 { margin: 0; font-size: 9px; }
  .about p { font-size: 15px; }
  .site-footer { flex-wrap: wrap; gap: 12px; padding: 20px 0; }
  .footer-name { flex: 1; }
  .site-footer p { order: 3; width: 100%; font-size: 10px; }
}

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