:root {
  --paper:   #F5F3EF;
  --surface: #FFFFFF;
  --ink:     #14171D;
  --ink-2:   #464E5C;
  --ink-3:   #6E7787;
  --rule:    #E2DED7;
  --accent:  #1861E4;
  --display: "Instrument Serif", Georgia, "Times New Roman", serif;
  --body: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper:   #0F1216;
    --surface: #161A21;
    --ink:     #E9ECF1;
    --ink-2:   #B0B8C4;
    --ink-3:   #828B99;
    --rule:    #262D38;
    --accent:  #6098F7;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 44rem; margin: 0 auto; padding-block: 3rem 5rem; padding-left: 1.25rem; padding-right: 1.25rem; }
header.site { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 3rem; }
.wordmark { font-family: var(--display); font-size: 1.6rem; letter-spacing: -0.01em; color: var(--ink); text-decoration: none; }
nav a { color: var(--ink-3); text-decoration: none; font-size: 0.92rem; margin-left: 1.1rem; }
nav a:hover, nav a:focus-visible { color: var(--ink); }
h1 { font-family: var(--display); font-weight: 400; font-size: clamp(2.2rem, 6vw, 3.2rem); line-height: 1.08; letter-spacing: -0.01em; margin: 0 0 0.6rem; text-wrap: balance; }
.updated { font-size: 0.85rem; color: var(--ink-3); margin: 0 0 2.5rem; }
h2 { font-size: 1.05rem; font-weight: 600; margin: 2.25rem 0 0.5rem; letter-spacing: -0.005em; }
p { color: var(--ink-2); margin: 0 0 1rem; }
.lede { font-size: 1.1rem; color: var(--ink-2); max-width: 34rem; }
a { color: var(--accent); }
.card { background: var(--surface); border: 1px solid var(--rule); border-radius: 6px; padding: 1.4rem 1.5rem; margin-top: 2.5rem; }
.card p:last-child { margin-bottom: 0; }
footer { margin-top: 4rem; padding-top: 1.5rem; border-top: 1px solid var(--rule); font-size: 0.85rem; color: var(--ink-3); }
footer a { color: var(--ink-3); }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

/* ---- contact form ---- */
form { margin-top: 2rem; max-width: 34rem; }
.field { margin-bottom: 1.1rem; }
label { display: block; font-size: 0.88rem; font-weight: 600; color: var(--ink); margin-bottom: 0.35rem; }
input, select, textarea {
  width: 100%;
  font: inherit;
  font-size: 1rem;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 5px;
  padding: 0.6rem 0.7rem;
}
textarea { min-height: 9rem; resize: vertical; }
input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
button {
  font: inherit;
  font-weight: 600;
  font-size: 1rem;
  color: #fff;
  background: var(--accent);
  border: 0;
  border-radius: 5px;
  padding: 0.7rem 1.4rem;
  cursor: pointer;
}
button:disabled { opacity: 0.55; cursor: default; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.note { font-size: 0.88rem; color: var(--ink-3); margin-top: 0.9rem; }
.status { margin-top: 1.1rem; padding: 0.85rem 1rem; border-radius: 5px; border: 1px solid var(--rule); background: var(--surface); }
.status.err { border-color: #B3261E; color: #B3261E; }
.status.ok { border-color: #2F6B4F; color: #2F6B4F; }