:root {
  --top: #007190;
  --bottom: #0e212e;
  --ink: #ffffff;
  --muted: rgba(255,255,255,.82);
  --line: rgba(255,255,255,.22);
  --fill: rgba(255,255,255,.08);
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font: 18px/1.55 Georgia, "Times New Roman", serif;
  color: var(--ink);
  background: linear-gradient(180deg, var(--top) 0%, var(--bottom) 100%) fixed;
}
main {
  max-width: 720px;
  margin: 0 auto;
  padding: 3.5rem 1.4rem 2.5rem;
}
h1 {
  font-size: clamp(2.1rem, 5vw, 3rem);
  font-weight: 400;
  letter-spacing: .02em;
  margin: 0 0 .6rem;
}
h2 {
  font-size: 1.15rem;
  font-weight: 400;
  letter-spacing: .12em;
  text-transform: uppercase;
  margin: 2.4rem 0 .8rem;
}
p { color: var(--muted); margin: 0 0 1rem; }
a { color: #fff; }
.links { list-style: none; padding: 0; margin: 0 0 1.5rem; }
.links li { margin: 0 0 .55rem; }
.btn {
  display: inline-block;
  margin: .4rem 0 1.2rem;
  padding: .65rem 1.1rem;
  border: 1px solid #fff;
  border-radius: 4px;
  color: #fff;
  text-decoration: none;
}
.btn:hover { background: rgba(255,255,255,.12); }
form {
  display: grid;
  gap: .75rem;
  margin-top: 1rem;
}
label { font-size: .95rem; }
input, textarea {
  width: 100%;
  margin-top: .3rem;
  padding: .7rem .8rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--fill);
  color: #fff;
  font: inherit;
}
input:focus, textarea:focus { outline: 2px solid rgba(255,255,255,.45); }
.hp { position: absolute; left: -9999px; }
.row { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.count, .status { font-size: .9rem; color: var(--muted); }
button {
  justify-self: start;
  padding: .7rem 1.2rem;
  border: 0;
  border-radius: 4px;
  background: #fff;
  color: var(--bottom);
  font: inherit;
  cursor: pointer;
}
button:disabled { opacity: .6; cursor: wait; }
footer {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: .95rem;
  color: var(--muted);
}