:root {
  color-scheme: light dark;
  --accent: #2f6b40;
  --text: #1c1c1e;
  --muted: #6b6b6b;
  --bg: #fff;
  --card: #fafafa;
  --line: #e2e2e2;
  --code-bg: #f2f2f4;
  --btn: #2f6b40;
  --btn-hover: #245432;
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #7cc496;
    --text: #eaeaea;
    --bg: #131313;
    --card: #1a1a1a;
    --line: #2e2e2e;
    --code-bg: #202022;
    /* ボタンは暗所でも白文字が乗るよう、--accent より暗いままにする */
    --btn: #377a4a;
    --btn-hover: #2f6b40;
  }
}

* { box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans",
               "Noto Sans JP", sans-serif;
  line-height: 1.85;
  max-width: 46rem;
  margin: 0 auto;
  padding: 3rem 1.25rem 5rem;
  color: var(--text);
  background: var(--bg);
}

h1 { font-size: 2rem; margin: 0 0 .3rem; }
h2 { font-size: 1.15rem; margin-top: 2.5rem; }
h3 { font-size: 1rem; margin: 1.4rem 0 .3rem; }
p { margin: .8rem 0; }
.tagline { color: var(--muted); margin-top: 0; }
a { color: var(--accent); }
ul { padding-left: 1.2rem; }
li { margin: .35rem 0; }

.card {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.1rem 1.3rem;
  margin: 1.5rem 0;
  background: var(--card);
}

footer {
  margin-top: 4rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
  font-size: .85rem;
  color: var(--muted);
}

/* --- ポータル（アプリ一覧） --- */

.app {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.2rem 1.3rem 1.4rem;
  margin: 1.6rem 0;
  background: var(--card);
}

.app-head {
  display: flex;
  align-items: center;
  gap: .9rem;
  margin-bottom: .2rem;
}

.app-head img {
  width: 60px;
  height: 60px;
  border-radius: 13px;
  flex: 0 0 auto;
}

.app-name {
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.4;
  margin: 0;
}

.app-sub {
  color: var(--muted);
  font-size: .9rem;
  line-height: 1.5;
  margin: 0;
}

.status {
  display: inline-block;
  font-size: .75rem;
  line-height: 1.6;
  padding: 0 .5rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
  white-space: nowrap;
  margin-left: .1rem;
}

.urls {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
}

.urls li {
  display: grid;
  grid-template-columns: 8.5rem 1fr auto;
  gap: .4rem .7rem;
  align-items: baseline;
  padding: .45rem 0;
  border-top: 1px solid var(--line);
  margin: 0;
}

.urls .label {
  color: var(--muted);
  font-size: .85rem;
}

.urls .value {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .82rem;
  line-height: 1.6;
  word-break: break-all;
}

.copy {
  font: inherit;
  font-size: .75rem;
  line-height: 1.6;
  padding: 0 .55rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--bg);
  color: var(--muted);
  cursor: pointer;
  white-space: nowrap;
}

.copy:hover { color: var(--accent); border-color: var(--accent); }
.copy.done { color: var(--accent); border-color: var(--accent); }

@media (max-width: 30rem) {
  .urls li { grid-template-columns: 1fr auto; }
  .urls .label { grid-column: 1 / -1; }
}

/* --- レイアウト土台（ヘッダー／フッターだけ全幅にする） --- */

body {
  max-width: none;
  margin: 0;
  padding: 0 0 0;
}

/* body 直下の中身だけを読み幅に収める。ヘッダーとフッターは全幅のまま */
body > *:not(.masthead):not(.sitefooter) {
  max-width: 46rem;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

body > h1 { margin-top: 2.2rem; }
.crumbs + h1 { margin-top: .1rem; }

/* --- ヘッダー --- */

.masthead {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}

@supports (backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px)) {
  .masthead {
    background: color-mix(in srgb, var(--bg) 88%, transparent);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    backdrop-filter: saturate(180%) blur(14px);
  }
}

.masthead-inner {
  max-width: 46rem;
  margin: 0 auto;
  padding: .5rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.masthead .brand {
  font-weight: 700;
  font-size: 1.02rem;
  letter-spacing: .005em;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
}

.masthead .brand:hover { color: var(--accent); }

.mainnav {
  display: flex;
  align-items: center;
  gap: .1rem;
  margin-left: auto;
}

.mainnav > a,
.menu > summary {
  display: block;
  padding: .4rem .62rem;
  border-radius: 8px;
  font-size: .875rem;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background .13s ease, color .13s ease;
}

.mainnav > a:hover,
.menu > summary:hover { background: var(--card); color: var(--accent); }

.mainnav > a[aria-current="page"],
.menu[data-current] > summary { color: var(--accent); font-weight: 600; }

/* --- プルダウン（details なので JS なしでも開く） --- */

.menu { position: relative; }
.menu > summary { list-style: none; }
.menu > summary::-webkit-details-marker { display: none; }
.menu > summary::after {
  content: "";
  display: inline-block;
  width: .34em; height: .34em;
  margin-left: .42em;
  vertical-align: .12em;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-.06em);
  opacity: .55;
}
.menu[open] > summary { background: var(--card); color: var(--accent); }
.menu[open] > summary::after { transform: rotate(225deg) translateY(-.16em); opacity: .8; }

.menu-panel {
  position: absolute;
  top: calc(100% + .42rem);
  left: 0;
  min-width: 15.5rem;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: .4rem;
  box-shadow: 0 14px 38px rgba(0, 0, 0, .14);
  display: flex;
  flex-direction: column;
  z-index: 200;
  /* 項目が増えても画面からはみ出さない。あふれたらパネル内で送る */
  max-height: calc(100vh - 4.5rem);
  overflow-y: auto;
  overscroll-behavior: contain;
}

.menu:last-child .menu-panel { left: auto; right: 0; }

.menu-panel a {
  padding: .48rem .62rem;
  border-radius: 8px;
  color: var(--text);
  text-decoration: none;
  font-size: .875rem;
  line-height: 1.5;
}

.menu-panel a:hover { background: var(--card); color: var(--accent); }
.menu-panel a[aria-current="page"] { color: var(--accent); font-weight: 600; }
.menu-panel a small { display: block; color: var(--muted); font-size: .77rem; line-height: 1.5; }
.menu-panel a:hover small { color: var(--muted); }

.menu-panel .grp {
  padding: .55rem .62rem .2rem;
  font-size: .72rem;
  letter-spacing: .07em;
  color: var(--muted);
}
.menu-panel .grp + a { margin-top: 0; }
.menu-panel hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: .35rem .35rem;
}

@media (max-width: 660px) {
  .masthead-inner { flex-wrap: wrap; padding: .45rem .9rem; gap: .15rem .6rem; }
  /* 入りきらないときは折り返す。space-between だと項目が枠から溢れる */
  .mainnav {
    margin-left: 0;
    width: 100%;
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: .1rem .05rem;
  }
  .mainnav > a, .menu > summary { padding: .32rem .36rem; font-size: .8rem; }
  /* 個々の項目に吊るすと画面外へ出るので、狭い幅ではヘッダー全幅に敷く */
  .masthead-inner { position: relative; }
  .menu { position: static; }
  .menu-panel {
    left: .75rem;
    right: .75rem;
    width: auto;
    min-width: 0;
    top: calc(100% + .25rem);
  }
  .menu:last-child .menu-panel { left: .75rem; right: .75rem; }
}

@media (max-width: 430px) {
  .masthead-inner { padding: .4rem .75rem; }
  .mainnav > a, .menu > summary { padding: .3rem .3rem; font-size: .755rem; }
  .menu > summary::after { margin-left: .3em; width: .3em; height: .3em; }
}

/* --- パンくず --- */

.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .22rem .4rem;
  margin-top: 1.5rem;
  margin-bottom: .1rem;
  font-size: .82rem;
  color: var(--muted);
}

.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--accent); text-decoration: underline; }
.crumbs [aria-current="page"] { color: var(--text); }
.crumbs .sep { opacity: .4; }

/* --- フッター --- */

.sitefooter {
  border-top: 1px solid var(--line);
  margin-top: 4.5rem;
  background: var(--card);
}

.sitefooter-inner {
  max-width: 46rem;
  margin: 0 auto;
  padding: 2.2rem 1.25rem 2.3rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10.5rem, 1fr));
  gap: 1.7rem 1.4rem;
}

.sitefooter h2 {
  font-size: .74rem;
  letter-spacing: .08em;
  margin: 0 0 .6rem;
  color: var(--muted);
  font-weight: 600;
}

.sitefooter ul { list-style: none; padding: 0; margin: 0; }
.sitefooter li { margin: .32rem 0; }
.sitefooter a { font-size: .86rem; color: var(--text); text-decoration: none; }
.sitefooter a:hover { color: var(--accent); text-decoration: underline; }

.sitefooter .copy {
  grid-column: 1 / -1;
  border-top: 1px solid var(--line);
  padding-top: 1.1rem;
  font-size: .8rem;
  color: var(--muted);
}
/* --- 記事 --- */

.meta {
  color: var(--muted);
  font-size: .85rem;
  margin: .2rem 0 1.8rem;
}

.toc {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem 1.3rem;
  margin: 1.8rem 0;
  background: var(--card);
  font-size: .93rem;
}

.toc p { margin: 0 0 .5rem; font-weight: 600; }
.toc ul { margin: 0; }

table.data {
  border-collapse: collapse;
  width: 100%;
  font-size: .88rem;
  margin: 1.2rem 0;
}

table.data th,
table.data td {
  border: 1px solid var(--line);
  padding: .5rem .6rem;
  text-align: left;
  vertical-align: top;
}

table.data th { background: var(--card); font-weight: 600; }

.related {
  border-top: 1px solid var(--line);
  margin-top: 3rem;
  padding-top: 1.2rem;
  font-size: .92rem;
}

.related p { font-weight: 600; margin: 0 0 .4rem; }

/* --- 記事一覧カード --- */

.postcard {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.1rem 1.25rem 1.2rem;
  margin: 1rem 0;
  background: var(--card);
  transition: border-color .15s ease;
}

.postcard:hover { border-color: var(--accent); }
.postcard h3 { margin: 0 0 .35rem; font-size: 1.03rem; line-height: 1.5; }
.postcard h3 a { text-decoration: none; }
.postcard h3 a:hover { text-decoration: underline; }
.postcard p { margin: 0; font-size: .9rem; color: var(--muted); line-height: 1.75; }
.postcard .tag {
  display: inline-block;
  font-size: .72rem;
  letter-spacing: .04em;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: .08rem .55rem;
  margin-bottom: .5rem;
  background: var(--bg);
}

/* --- 前後の記事 --- */

.postnav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .8rem;
  margin-top: 2.6rem;
}

.postnav a {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: .85rem 1rem;
  text-decoration: none;
  color: var(--text);
  font-size: .87rem;
  line-height: 1.6;
  transition: border-color .15s ease;
}

.postnav a:hover { border-color: var(--accent); }
.postnav .lbl { display: block; color: var(--muted); font-size: .74rem; margin-bottom: .18rem; }
.postnav .next { text-align: right; }

@media (max-width: 560px) {
  .postnav { grid-template-columns: 1fr; }
  .postnav .next { text-align: left; }
}

/* --- App Store へのボタン --- */

.appstore { margin: 1.2rem 0; }

.appstore a {
  display: inline-block;
  background: var(--btn);
  color: #fff;
  text-decoration: none;
  padding: .75rem 1.4rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: .95rem;
  line-height: 1.4;
  transition: filter .15s ease;
}

.appstore a:hover { background: var(--btn-hover); text-decoration: none; }

/* アプリ一覧のカード内に置くときは、少し詰めて他のリンクと並べる */
.app .appstore { margin: .9rem 0 .2rem; }
.app .appstore a { padding: .6rem 1.15rem; font-size: .9rem; }

/* --- アプリ一覧のカード（トップページ） --- */

.lead { font-size: 1.03rem; }

.app-body { margin: .9rem 0 0; font-size: .95rem; }
.app-body p { margin: .55rem 0; }

.app-links {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem .9rem;
  margin: .9rem 0 0;
  padding-top: .8rem;
  border-top: 1px solid var(--line);
  font-size: .87rem;
}

.app-links .sep { color: var(--muted); }

/* --- スクリーンショット --- */

.shots {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 14px;
  margin: 1.4rem 0;
}

.shots a { display: block; line-height: 0; }

.shots img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  border: 1px solid var(--line);
}

/* iPad など横長の並び */
.shots.wide { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }

/* --- 本文中の素のテーブル（プライバシーポリシー等） --- */

.wrap table,
main table,
body > table {
  border-collapse: collapse;
  width: 100%;
  font-size: .88rem;
  margin: 1rem 0;
  display: block;
  overflow-x: auto;
}

body > table th,
body > table td {
  border: 1px solid var(--line);
  padding: .55rem .7rem;
  text-align: left;
  vertical-align: top;
}

body > table th { background: var(--card); font-weight: 600; white-space: nowrap; }

/* --- 注意書きの囲み --- */

.note {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: .9rem 1.1rem;
  margin: 1.2rem 0;
  font-size: .95rem;
}

/* --- 文書の区切り（1ページに2本のポリシーを載せる場合） --- */

body > hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 4rem 0 2.5rem;
}

code { font-size: .9em; }

/* --- 言語切替 --- */

.langswitch {
  display: flex;
  gap: .3rem;
  margin: 1.2rem 0 0;
  font-size: .84rem;
}

.langswitch a,
.langswitch span {
  padding: .25rem .7rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  text-decoration: none;
  color: var(--muted);
  line-height: 1.7;
}

.langswitch a:hover { border-color: var(--accent); color: var(--accent); }

.langswitch [aria-current="true"] {
  background: var(--card);
  border-color: var(--accent);
  color: var(--text);
  font-weight: 600;
}