body.dark-mode {
  background: #181a21 !important;
  color: #eee !important;
}
body.dark-mode .main-footer {
  background: #1a1e26;
  color: #aab;
  border-top-color: #303866;
}
body.dark-mode a { color: #95adf7 !important; }
body.dark-mode a:hover { color: #fff !important; }
body.dark-mode .table { background: #232436; color: #eee; }
body.dark-mode .accordion-button { background: #232436; color: #fff; }
body.dark-mode .accordion-body { background: #222; color: #eee; }
body.dark-mode .btn-outline-primary { border-color: #888; color: #b3bcf7; }
body.dark-mode input, body.dark-mode textarea { background:#25253c; color:#eee; border-color:#35386a;}
/* 必要に応じ他要素も追記OK */

.main-footer {
  background: #23272a;
  color: #ccc;
  font-size: 0.97em;
  padding: 32px 0 12px 0;
  border-top: 4px solid #5865F2;
  margin-top: 48px;
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 36px;
  justify-content: space-between;
  align-items: flex-start;
  flex-direction: row;
}
.footer-col {
  min-width: 160px;
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-logo {
  font-size: 1.1em;
  color: #fff;
}
.footer-desc {
  font-size: 0.93em;
  color: #aaa;
}
.footer-heading {
  font-weight: bold;
  color: #fafaff;
  margin-bottom: 6px;
  font-size: 0.96em;
}
.footer-col a {
  color: #95adf7;
  text-decoration: none;
  font-size: 0.97em;
  transition: color 0.2s;
}
.footer-col a:hover {
  color: #fff;
  text-decoration: underline;
}
.footer-bottom {
  text-align: center;
  border-top: 1px solid #444;
  margin-top: 20px;
  padding-top: 8px;
  font-size: 0.92em;
  color: #999;
}
.footer-bottom a {
  color: #95adf7;
  margin: 0 6px;
  text-decoration: none;
  transition: color 0.2s;
}
.footer-bottom a:hover {
  color: #fff;
  text-decoration: underline;
}
@media (max-width: 750px) {
  .footer-inner {
    flex-direction: column;
    gap: 18px;
    padding: 0 12px;
  }
}
.hero {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 80px 0;
        }
        .hero h1 {
            font-size: 3.5rem;
            font-weight: bold;
            margin-bottom: 20px;
        }
        .hero p {
            font-size: 1.3rem;
            margin-bottom: 30px;
        }
        .command-card {
            transition: transform 0.2s;
        }
        .command-card:hover {
            transform: translateY(-5px);
        }
        .chat-example {
            background: #f8f9fa;
            border-radius: 10px;
            padding: 20px;
            margin: 20px 0;
        }
html {
  scroll-behavior: smooth;
}
.pagetop {
  height: 50px;
  width: 50px;
  position: fixed;
  right: 30px;
  bottom: 30px;
  background: #fff;
  border: solid 2px #000;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  cursor: pointer;
}
.pagetop__arrow {
  height: 12px;
  width: 12px;
  border-top: 3px solid #000;
  border-right: 3px solid #000;
  transform: rotate(-45deg);
}