:root {
  color-scheme: light;
  --paper: #f5f1e8;
  --ink: #142019;
  --forest: #173d2b;
  --muted: #53645b;
  --line: #c8d3c9;
  --signal: #d8ff68;
  --clay: #c96c48;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 84% 8%, #d8ff6830, transparent 28rem),
    linear-gradient(180deg, #f8f5ed, var(--paper));
  color: var(--ink);
  font: 16px/1.65 Inter, ui-sans-serif, system-ui, sans-serif;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: linear-gradient(#173d2b09 1px, transparent 1px);
  background-size: 100% 32px;
  content: '';
  pointer-events: none;
}

a {
  color: var(--forest);
  text-underline-offset: 4px;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid var(--clay);
  outline-offset: 3px;
}

body > header {
  width: min(1180px, calc(100% - 40px));
  margin: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 25px 0;
  gap: 24px;
  border-bottom: 1px solid #173d2b1f;
}

nav {
  display: flex;
  gap: 22px;
}

.brand {
  text-decoration: none;
  font: 800 31px/1 ui-sans-serif, system-ui, sans-serif;
  letter-spacing: -2.5px;
}

.brand span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font: 600 10px/1 ui-monospace, SFMono-Regular, Consolas, monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

main {
  width: min(560px, calc(100% - 28px));
  margin: clamp(20px, 5vw, 65px) auto 70px;
  padding: clamp(26px, 5vw, 48px);
  background: #fffef9;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 12px 14px 0 #173d2b0d;
}

main.wide {
  max-width: 760px;
}

h1,
h2 {
  font-family: Georgia, 'Times New Roman', serif;
  font-weight: 500;
}

h1 {
  margin: 15px 0 22px;
  font-size: clamp(36px, 7vw, 52px);
  line-height: 1.04;
  letter-spacing: -1.8px;
}

h2 {
  line-height: 1.25;
}

.eyebrow {
  margin: 0;
  color: var(--forest);
  font: 750 10px/1.4 ui-monospace, SFMono-Regular, Consolas, monospace;
  letter-spacing: 0.14em;
}

.lede,
small {
  color: var(--muted);
}

form {
  display: grid;
  gap: 9px;
  margin: 27px 0;
}

label {
  margin-top: 10px;
  color: #344a3e;
  font-size: 14px;
  font-weight: 700;
}

input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #b9c7bc;
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  font: inherit;
}

input:focus {
  border-color: var(--forest);
}

button,
.button {
  display: inline-block;
  margin-top: 12px;
  padding: 13px 22px;
  border: 1px solid var(--forest);
  border-radius: 6px;
  background: var(--forest);
  color: #fff;
  cursor: pointer;
  font: 700 14px/1.3 inherit;
  text-decoration: none;
}

.secondary {
  background: transparent;
  color: var(--forest);
}

small {
  font-size: 12px;
}

.check {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  padding: 12px;
  border: 1px solid #d8dfd6;
  border-radius: 6px;
  background: #f7f8f3;
  font-weight: 450;
}

.check input {
  width: 18px;
  height: 18px;
  margin-top: 4px;
  flex-shrink: 0;
  accent-color: var(--forest);
}

.notice {
  padding: 14px 17px;
  border: 1px solid #c9d9bd;
  border-left: 4px solid var(--forest);
  border-radius: 5px;
  background: #f0f7e9;
  overflow-wrap: anywhere;
}

.result {
  overflow-wrap: anywhere;
}

.result input {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 13px;
}

body > footer {
  width: min(760px, calc(100% - 40px));
  margin: 0 auto 32px;
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid #173d2b1f;
  color: var(--muted);
  font-size: 12px;
}

body > footer nav {
  flex-wrap: wrap;
  justify-content: flex-end;
}

@media (max-width: 620px) {
  body > header {
    align-items: flex-start;
    padding: 19px 0;
  }

  body > header nav {
    gap: 12px;
    font-size: 12px;
  }

  body > header nav a:nth-child(2) {
    display: none;
  }

  main {
    margin: 15px 14px 40px;
    padding: 29px 23px;
  }

  body > footer {
    flex-direction: column;
  }

  body > footer nav {
    justify-content: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
  }
}