* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: #f6f5ef;
  color: #203c35;
  font:
    17px/1.6 system-ui,
    -apple-system,
    sans-serif;
}
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #d9ded4;
  padding: 24px 6vw;
}
.brand {
  font-size: 27px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-decoration: none;
  color: inherit;
}
.brand span {
  display: block;
  font-size: 9px;
  letter-spacing: 0.2em;
}
.private,
.hint {
  font-size: 14px;
  color: #64756c;
}
main {
  max-width: 1200px;
  margin: auto;
  padding: 52px 32px;
}
.eyebrow {
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.15em;
  color: #6c7e6b;
}
h1 {
  font-family: Georgia, serif;
  font-weight: 400;
  font-size: clamp(36px, 5vw, 62px);
  line-height: 1.12;
  max-width: 800px;
  margin: 18px 0;
}
h2 {
  font-size: 23px;
  line-height: 1.3;
}
.intro {
  max-width: 680px;
  color: #5b6e63;
}
.notice {
  padding: 15px 20px;
  background: #e9edde;
  border-left: 3px solid #879966;
  margin: 28px 0;
}
.papers {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 36px 0;
}
.papers article {
  padding: 24px;
  background: #fff;
  border: 1px solid #d9ded4;
  border-radius: 8px;
}
.papers h2 {
  min-height: 60px;
}
.papers a {
  color: #375f4a;
  font-weight: 600;
}
iframe {
  width: 100%;
  height: 450px;
  border: 1px solid #e2e5dc;
  margin-top: 20px;
}
form,
.review {
  max-width: 720px;
  margin: 48px auto;
  background: #fff;
  border: 1px solid #d9ded4;
  border-radius: 8px;
  padding: 32px;
}
fieldset {
  border: 0;
  padding: 0;
  margin: 28px 0;
}
legend {
  font-weight: 650;
  margin-bottom: 12px;
}
.choices {
  display: flex;
  gap: 16px;
}
.choices label {
  padding: 12px 22px;
  border: 1px solid #bdc8bc;
  border-radius: 5px;
  cursor: pointer;
}
input {
  accent-color: #375f4a;
}
select {
  display: block;
  width: 100%;
  padding: 12px;
  background: white;
  border: 1px solid #bdc8bc;
  border-radius: 5px;
  font: inherit;
  margin-top: 12px;
  color: inherit;
}
button {
  background: #254e3d;
  border: 0;
  color: white;
  padding: 14px 24px;
  border-radius: 5px;
  font: 600 15px system-ui;
  cursor: pointer;
}
button:hover {
  background: #39664e;
}
button:disabled {
  opacity: 0.6;
  cursor: wait;
}
button.secondary {
  background: #edf0e8;
  color: #254e3d;
}
.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
footer {
  border-top: 1px solid #d9ded4;
  margin-top: 64px;
  padding-top: 20px;
  font-size: 13px;
  color: #64756c;
}
[hidden] {
  display: none !important;
}
:focus-visible {
  outline: 3px solid #a1b761;
  outline-offset: 3px;
}
@media (max-width: 700px) {
  .papers {
    grid-template-columns: 1fr;
  }
  main {
    padding: 30px 20px;
  }
  .private {
    display: none;
  }
  form,
  .review {
    padding: 24px;
  }
  iframe {
    height: 360px;
  }
  .papers h2 {
    min-height: 0;
  }
}