:root {
  color-scheme: light;
  --ink: #171717;
  --muted: #58616c;
  --line: #d9e0e5;
  --paper: #f8faf7;
  --panel: #ffffff;
  --accent: #126149;
  --accent-dark: #0d4838;
  --code: #151719;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.5;
}
a { color: var(--accent); text-underline-offset: 3px; }
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1120px, calc(100vw - 40px));
  margin: 0 auto;
  padding: 22px clamp(20px, 5vw, 56px);
}
.brand {
  color: var(--ink);
  font-size: 20px;
  font-weight: 800;
  text-decoration: none;
}
nav a {
  color: var(--accent-dark);
  font-size: 15px;
  font-weight: 800;
  text-decoration: none;
}
.hero {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: center;
  width: min(880px, calc(100vw - 40px));
  min-height: calc(100vh - 76px);
  margin: 0 auto;
  padding: clamp(36px, 7vw, 76px) 0 64px;
}
.hero-copy {
  max-width: 780px;
  text-align: center;
  margin: 0 auto;
}
h1 {
  margin: 0;
  font-size: clamp(40px, 5vw, 60px);
  line-height: 1.02;
  letter-spacing: 0;
}
.subhead {
  max-width: 650px;
  margin: 22px auto 0;
  color: var(--muted);
  font-size: 19px;
}
.actions {
  margin-top: 30px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 7px;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
  text-decoration: none;
}
.prompt-panel {
  width: 100%;
  margin-top: 38px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 14px 34px rgba(23, 23, 23, 0.07);
}
.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}
button {
  min-height: 32px;
  padding: 0 12px;
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: #eef7f2;
  color: var(--accent-dark);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}
button:hover { background: #e3f1ea; }
pre {
  overflow: auto;
  max-height: min(48vh, 380px);
  margin: 0;
  padding: 18px;
  background: var(--code);
  color: #f8f8f8;
  font: 14px/1.55 ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  white-space: pre-wrap;
}
.copy-status {
  min-height: 24px;
  margin: 0;
  padding: 8px 14px 12px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 750;
}
@media (max-width: 960px) {
  .topbar {
    width: 100%;
    padding-inline: 20px;
  }
  .hero {
    width: 100%;
    min-height: auto;
    padding: 28px 20px 56px;
  }
  .hero-copy {
    text-align: left;
  }
  .subhead {
    margin-left: 0;
  }
}