html, body {
  height: 100%;
  margin: 0;
  padding: 0;
}
body {
  min-height: 100vh;
  background: linear-gradient(to bottom, #6db7f3, #d6ecf4);
  background-attachment: fixed;
  margin: 0;
  padding: 0;
  font-family: sans-serif;
  text-align: center;
  color: #333;
}
header {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
}
header img {
  width: 100%;
  height: auto;
}
main {
  padding: 40px 20px;
}
.links a {
  display: inline-block;
  margin: 10px;
  padding: 10px 20px;
  background: #0077cc;
  color: white;
  text-decoration: none;
  border-radius: 5px;
  font-size: 1.1em;
}
.links a:hover {
  background: #005fa3;
}
.link-yahoo a {
  color: #FFCC00;
}

footer {
  text-align: center;
  margin-top: 40px;
  font-size: 0.9em;
  color: #777;
}
.rss-wrapper {
  max-width: 600px;
  margin: 1.5em auto;
  text-align: center;
}
.shachi-note {
  max-width: 600px;
  border: 1px solid #ddd;
  padding: 0.8em 1em;
  border-radius: 12px;
  background-color: #9cbccb;
  font-size: 0.95em;
  line-height: 1.6;
  margin: 1.5em auto;
  font-size: 14px;
}
#rss-feed {
  list-style: disc;
  list-style-position: inside; /* Changed to inside to keep dots with the text */
  padding-left: 0; /* Removed padding to center the list */
  text-align: left; /* Kept text-align: left for list items */
  display: inline-block; /* Essential for centering the ul itself within the div */
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 1rem;
  text-align: left; /* ← 全体のデフォルトは左寄せに */
}

.container ul {
  padding-left: 1.5em;
  list-style-position: outside;
  margin-left: 0;
}

.container li {
  margin-bottom: 0.5em;
}

.back-button {
  text-align: center;
  margin: 3em 0 2em;
}

.btn-main {
  display: inline-block;
  padding: 0.8em 1.6em;
  background-color: #007FFF;
  color: #fff;
  font-weight: bold;
  text-decoration: none;
  border-radius: 6px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  transition: background-color 0.3s ease;
}

.btn-main:hover {
  background-color: #005FCC;
}

.global-contact {
  max-width: 500px;
  margin: 12px auto;
  padding: 6px 20px;

  background: rgba(255, 255, 255, 0.25);

  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 8px;
  text-align: left;
  font-size: 0.95em;

  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

.global-contact p {
  margin: 0.4em 0;
}