* {
  box-sizing: border-box;
}
body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Yu Mincho', 'Hiragino Mincho Pro', 'serif';
  font-size:1.2rem;
  background: #efe6d7;
  color: #3b3025;
}

.bg {
    position: fixed;
    inset: -3%;
    background:
        url('top_bk.jpg')
        center / cover no-repeat;
    z-index: -1;

    animation: bgFloat 3s ease-out forwards;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 32px 18px 80px;
}
header {
  padding:15px;
  background-color: #ffd2b8bb;
  border-radius: 10px;
  text-align:center;
  margin-bottom:40px;
}
header h1 {
  margin: 0 0 6px;
  font-size: clamp(2rem, 2.5vw, 3rem);
  letter-spacing: 0.04em;
}
header p {
  margin: 0;
  color: #5c5244;
}
.panel {
  background: rgba(255, 249, 237, 0.95);
  border: 1px solid rgba(59, 48, 37, 0.16);
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 16px 35px rgba(58, 41, 14, 0.08);
}
.author-card {
  margin-bottom: 20px;
  padding-bottom: 18px;
  border-bottom: 1px dashed rgba(59, 48, 37, 0.16);
}
.author-card:last-child {
  border-bottom: none;
  margin-bottom: 0;
}
.author-card h3 {
  margin: 0 0 12px;
  font-size: 1.2rem;
}
.author-card ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.author-card li {
  margin-bottom: 10px;
}
.author-card a {
  text-decoration: none;
  color: #4b3420;
  border-bottom: 1px solid rgba(75, 52, 32, 0.2);
}
.author-card a:hover {
  color: #2d1d0f;
}
.empty {
  color: #7a6a5d;
  font-size: 1rem;
}
.reader-panel {
  min-height: 70vh;
}
.reader {
  line-height: 1.8;
  letter-spacing: 0.03em;
  font-size: 1.2rem;
}
.reader h2{
  margin:2em 0 1em;
  font-size:2rem;
  border-bottom:2px solid #999;
  padding-bottom:.3em;
}

.reader h3{
  margin:1.8em 0 .8em;
  font-size:1.6rem;
}

.reader h4{
  margin:1.5em 0 .5em;
  font-size:1.3rem;
}
.reader p {
  margin: 1.2rem 0;
}
.save-button {
  position: fixed;
  left: 18px;
  bottom: 18px;
  border: none;
  padding: 14px 18px;
  background: #544032;
  color: #f7f1e7;
  font-size: 0.95rem;
  border-radius: 999px;
  cursor: pointer;
  box-shadow: 0 12px 22px rgba(51, 35, 19, 0.18);
}
.save-button:hover {
  background: #3e2e22;
}
@media (max-width: 720px) {
  .container {
    padding: 20px 14px 90px;
  }
}

/* TOPへ戻るボタン */
.top-btn {
    position: fixed;
    right: 20px;
    bottom: 20px;
    border: 0;
    padding: 1rem;
    border-radius: 50%;
    background:brown;
    color: #fff;
}