/*基本タグ*/
body {
  font-family: var(--font-base);
  font-size: var(--space-md);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  padding:0px;
  margin:0px;
}

h1 { font-size: 2rem; margin-bottom: var(--space-md);color:var(--color-h1); }
h2 { font-size: 1.6rem; margin-bottom: var(--space-md); color:var(--color-h2);}
h3 { font-size: 1.3rem; margin-bottom: var(--space-sm); color:var(--color-h3);}
h4 { font-size: 1.1rem; }
h5 { font-size: 1rem; }

p {
  margin-bottom: var(--space-md);
}

a {
  color: var(--color-main);
  text-decoration: none;
}
a:hover {
  opacity: 0.7;
}

img {
  max-width: 100%;
  height: auto;
}

ul {
  padding-left: 1.2em;
}
li {
  margin-bottom: var(--space-xs);
}

dl {
  margin-bottom: var(--space-md);
}
dt {
  font-weight: bold;
}
dd {
  margin-left: 1em;
}

table {
  width: 100%;
  border-collapse: collapse;
}
th, td {
  border: 1px solid var(--color-border);
  padding: var(--space-sm);
}
th {
  background: var(--color-accent);
}

hr{
  border: 0;
  height: 1px;

  background: linear-gradient(
    to right,
    #00000000 0%,
    #00000014 20%,
    #0000002e 50%,
    #00000014 80%,
    #00000000 100%
  );

  margin: 30px;
}

/* details / summary */
details {
  color: var(--color-text);
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 12px 16px;
  margin-bottom: 16px;
  background: #fff;
}

details[open] {
  color: var(--color-text);
  background: #f8fdfc;
  border-color: #6fcfbe;
}

summary {
  color: var(--color-h2);
  cursor: pointer;
  font-weight: bold;
  list-style: none;
  position: relative;
  padding-right: 28px;
  border-radius:4px;
}

/* Chrome系のデフォルト矢印を非表示 */
summary::-webkit-details-marker {
  display: none;
}

/* 独自アイコン */
summary::after {
  content: "＋";
  position: absolute;
  right: 3px;
  top: 3px;
  font-size: 1.2rem;
  transition: transform 0.3s ease;
}

/* 開いた時 */
details[open] summary::after {
  content: "－";
}

details[open] summary {
  color: black;
}

/* 中身 */
details > *:not(summary) {
  margin-top: 12px;
  animation: fadeIn 0.3s ease;
}

/* 開閉アニメーション */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.logo{
  max-width:90px;!important;
}

.header {
  background: #ffffffcc;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
}

.nav {
  display: flex;
  gap: var(--space-md);
}

.nav a {
  font-weight: bold;
}
#menuBtn {
  display: none; /* ← デフォルト非表示 */
}

/* SPだけ表示 */
@media (max-width: 768px) {
  #menuBtn {
    display: block;
  }
}

/* SP */
@media (max-width: 768px) {
  .nav {
    display: none;
    flex-direction: column;
    background: #fff;
    position: absolute;
    top: 60px;
    right: 0;
    width: 200px;
    border: 1px solid var(--color-border);
  }

  .nav.active {
    display: flex;
  }
}


.footer {
  background: #f9f9f9;
  padding: var(--space-lg);
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-muted);
}

.img_card{
  margin:auto;
  aspect-ratio:16 / 9;
  object-fit:cover;
  object-position:center;
  display:block;
}