/* One Idea Later — minimal, clean, single-colour friendly */

:root{
  --bg: #ffffff;
  --text: #111111;
  --muted: #555555;
  --hairline: #e7e7e7;
  --card: #fafafa;
  --radius: 14px;

  --max: 980px;
  --pad: 20px;

  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

*{ box-sizing: border-box; }
html, body{ height: 100%; }
body{
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a{
  color: inherit;
  text-decoration: none;
}
a:hover{ text-decoration: underline; }

.container{
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--pad);
}

.skip-link{
  position: absolute;
  left: -9999px;
  top: 10px;
  padding: 10px 12px;
  border: 1px solid var(--hairline);
  border-radius: 10px;
  background: var(--bg);
}
.skip-link:focus{
  left: 10px;
  z-index: 10;
}

header{
  border-bottom: 1px solid var(--hairline);
  background: var(--bg);
}
.nav{
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  gap: 16px;
}
.brand{
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-weight: 650;
  letter-spacing: -0.01em;
}
.brand-mark{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 1px solid var(--text);
  border-radius: 999px;
  font-size: 14px;
  line-height: 1;
}
.brand small{
  color: var(--muted);
  font-weight: 500;
}

.nav-links{
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: flex-end;
  font-size: 14px;
}
.nav-links a{
  padding: 6px 10px;
  border-radius: 999px;
}
.nav-links a[aria-current="page"]{
  background: var(--card);
  border: 1px solid var(--hairline);
  text-decoration: none;
}

main{
  padding: 46px 0 40px;
}

.hero{
  padding: 28px 0 10px;
}
.kicker{
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
h1{
  margin: 10px 0 10px;
  font-size: clamp(34px, 4.2vw, 56px);
  line-height: 1.1;
  letter-spacing: -0.03em;
}
.lede{
  margin: 0;
  font-size: 18px;
  color: var(--muted);
  max-width: 62ch;
}

.section{
  padding: 22px 0;
}
.section h2{
  margin: 0 0 12px;
  font-size: 18px;
  letter-spacing: -0.01em;
}
.section p{
  margin: 0 0 12px;
  max-width: 70ch;
}
.section p:last-child{ margin-bottom: 0; }

.grid{
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
  margin-top: 14px;
}
.card{
  grid-column: span 12;
  border: 1px solid var(--hairline);
  background: var(--card);
  border-radius: var(--radius);
  padding: 16px;
}
.card h3{
  margin: 0 0 8px;
  font-size: 16px;
  letter-spacing: -0.01em;
}
.card p{
  margin: 0;
  color: var(--muted);
}

@media (min-width: 780px){
  .card.third{ grid-column: span 4; }
  .card.half{ grid-column: span 6; }
}

.hr{
  margin: 26px 0;
  border: 0;
  border-top: 1px solid var(--hairline);
}

.list{
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--muted);
}
.list li{ margin: 6px 0; }

.note{
  border-left: 2px solid var(--text);
  padding-left: 14px;
  margin-top: 12px;
  color: var(--muted);
}

form{
  margin-top: 16px;
  max-width: 680px;
}
label{
  display: block;
  font-size: 14px;
  margin: 0 0 6px;
}
input, textarea{
  width: 100%;
  font: inherit;
  padding: 10px 12px;
  border: 1px solid var(--hairline);
  border-radius: 12px;
  background: var(--bg);
}
textarea{ min-height: 140px; resize: vertical; }
.field{ margin-bottom: 14px; }
.help{
  font-size: 12px;
  color: var(--muted);
  margin-top: 6px;
}
button{
  font: inherit;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--text);
  background: var(--bg);
  cursor: pointer;
}
button:hover{ background: var(--card); }

footer{
  border-top: 1px solid var(--hairline);
  padding: 18px 0 26px;
  color: var(--muted);
  font-size: 14px;
}
.footer-row{
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
}
.footer-links{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}