/* ゴロメディカ 参考書（新しい形）：テーマの本文・一問一答・選択肢の○×（js/sankousho/render.js・drill.js）
   見本（2026-10-21 v12、利用者が「急性冠症候群の感じでいい」）の見た目をそのまま。クラスは sk- を付けて app.css と分ける。 */
.sk {
  --bg: #ffffff; --bg-2: #f4f7f6; --bg-3: #e9f0ee;
  --fg: #131d1c; --fg-2: #46524f; --fg-3: #6a7774;
  --line: #e2e8e6; --line-2: #c9d4d1;
  --accent: #1f5f5a; --accent-2: #0f4f4b; --accent-soft: #e6efed;
  --red: #c8392a; --red-soft: #fbe9e6; --red-soft-2: #f7dcd7; --red-line: #efc6be; --marker: #fcf0b0;
  max-width: 860px; margin: 0 auto; padding-block: 16px 48px;
  color: var(--fg); font-family: var(--sans); font-size: 15px; line-height: 1.65;
}
.sk p { margin: 0; }
.sk [hidden] { display: none !important; }
.sk h1, .sk h2 { word-break: keep-all; }
.sk b { font-weight: 700; }
/* 本と同じ強調：黄色マーカー＝3回以上出題、下線＝1〜2回出題（第101〜120回） */
.sk mark { background: linear-gradient(transparent 58%, var(--marker) 58%); color: inherit; padding: 0 1px; }
.sk u { text-decoration: underline; text-decoration-thickness: 1.5px; text-underline-offset: .2em; }


/* 見出し */
.sk-hd { display: flex; gap: 16px; align-items: center; }
.sk-rank { flex: none; width: 64px; height: 64px; background: var(--accent); color: #fff; display: grid; place-items: center; align-content: center; border-radius: 2px; }
.sk-rank small { font-size: 10.5px; font-weight: 700; letter-spacing: .14em; line-height: 1; }
.sk-rank b { font: 700 30px/1 var(--num); margin-top: 4px; }
.sk-hd h1 { margin: 0; font-size: 28px; line-height: 1.3; letter-spacing: .03em; text-wrap: balance; }
.sk-hd .sk-sub { font-size: 13.5px; color: var(--fg-2); margin-top: 2px; }

.sk-freq { margin-top: 12px; display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 0 12px; align-items: end; }
.sk-freq .sk-lb { font-size: 12px; color: var(--fg-2); padding-bottom: 18px; line-height: 1.5; }
.sk-freq .sk-lb b { display: block; font: 700 15px/1.2 var(--num); color: var(--fg); }
.sk-bars { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); gap: 3px; align-items: end; }
.sk-bars span { display: grid; justify-items: stretch; text-align: center; font-family: var(--num); }
.sk-bars b { font-size: 11.5px; font-weight: 500; color: var(--fg); }
.sk-bars i { display: block; background: #7aa7a2; border-radius: 1px 1px 0 0; }
.sk-bars i.sk-z { height: 1px !important; background: var(--line-2); }
.sk-bars small { font-size: 10px; color: var(--fg-3); border-top: 1px solid var(--line-2); padding-top: 2px; }
@media (max-width: 479px) { .sk-bars { gap: 2px; } .sk-bars small { font-size: 9px; letter-spacing: -.04em; } .sk-bars small { display: flex; justify-content: center; white-space: nowrap; } .sk-bars span:first-child small { justify-content: flex-start; } .sk-bars span:last-child small { justify-content: flex-end; } .sk-bars small:not(.sk-k5) { color: transparent; } .sk-bars b { font-size: 10px; } }
.sk-legend { margin-top: 6px; display: flex; flex-wrap: wrap; gap: 4px 18px; font-size: 12.5px; color: var(--fg-2); }

.sk-first { margin-top: 14px; padding: 10px 14px 12px; background: var(--bg-3); }
.sk-first .sk-lb { font-size: 13px; font-weight: 700; letter-spacing: .1em; color: var(--accent); }
.sk-first ol { margin: 4px 0 0; padding-left: 1.4em; display: grid; gap: 2px; }
.sk-first li { font-size: 15.5px; line-height: 1.65; }
.sk-first li::marker { color: var(--accent); font-family: var(--num); font-weight: 700; }

/* 参考書の節 */
.sk-rs { margin-top: 20px; scroll-margin-top: 16px; }
.sk-rs h2, .sk-qh { margin: 0 0 8px; padding-bottom: 5px; border-bottom: 1px solid var(--line-2); font-size: 17px; line-height: 1.5; color: var(--accent); display: flex; align-items: flex-end; gap: 10px; }
.sk-rs p { margin-top: 6px; }
.sk-rs ul.sk-li { margin: 6px 0 0; padding-left: 1.1em; }
.sk-rs ul.sk-li li + li { margin-top: 1px; }
.sk-tbl { overflow-x: auto; }
.sk table { border-collapse: collapse; width: 100%; font-size: 14px; line-height: 1.5; }
.sk th, .sk td { border: 1px solid var(--line-2); padding: 5px 8px; text-align: left; vertical-align: top; }
.sk thead th { background: var(--bg-2); font-weight: 700; }
.sk tbody th { font-weight: 700; white-space: nowrap; }
.sk-c3 th:first-child { width: 22%; }

.sk-flow { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; }
.sk-flow li { position: relative; background: var(--bg-2); padding: 8px 14px 8px 22px; clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 50%, calc(100% - 10px) 100%, 0 100%, 10px 50%); min-width: 0; }
.sk-flow li:first-child { padding-left: 12px; clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 50%, calc(100% - 10px) 100%, 0 100%); }
.sk-flow b { display: block; font-size: 13.5px; }
.sk-flow span { display: block; font-size: 12.5px; color: var(--fg-2); line-height: 1.5; }
@media (max-width: 600px) {
  .sk-flow { grid-template-columns: minmax(0, 1fr); gap: 3px; }
  .sk-flow li, .sk-flow li:first-child { clip-path: none; padding: 7px 12px; border-left: 3px solid var(--accent); }
  .sk-flow b { display: inline; margin-right: 8px; } .sk-flow span { display: inline; }
}
.sk-note { margin-top: 12px; padding: 8px 14px; border-left: 4px solid var(--accent); background: var(--bg-2); font-size: 14px; }
.sk-note .sk-lb { font-weight: 700; font-size: 13px; color: var(--accent); }

/* 一問一答 */
/* 段階：基礎・標準を埋めたら応用 */
.sk-drill { margin-top: 30px; scroll-margin-top: 16px; }
.sk-lvs { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); border: 1px solid var(--accent); border-radius: 6px; overflow: hidden; }
.sk-lvb { font: inherit; display: grid; justify-items: center; gap: 1px; padding: 9px 10px; border: 0; background: var(--bg); color: var(--accent); cursor: pointer; }
.sk-lvb + .sk-lvb { border-left: 1px solid var(--accent); }
.sk-lvb b { font-size: 15.5px; line-height: 1.4; display: inline-flex; align-items: center; gap: 5px; }
.sk-lvb small { font-size: 11.5px; color: var(--fg-3); }
.sk-lvb[aria-selected="true"] { background: var(--accent); color: #fff; }
.sk-lvb[aria-selected="true"] small { color: #d5e5e2; }
.sk-lk { display: inline-flex; } .sk-lk svg { width: 11px; height: 13px; }
.sk-drill[data-lv="b"] [data-lvl="a"], .sk-drill[data-lv="a"] [data-lvl="b"] { display: none; }
.sk-lock { margin-top: 14px; padding: 16px 18px; background: var(--bg-2); font-size: 14px; color: var(--fg-2); }
.sk-lock b { font: 700 15px/1 var(--num); color: var(--fg); }
.sk-lock .sk-back { margin-left: 10px; font-size: 13px; }
.sk-qa { margin-top: 16px; scroll-margin-top: 16px; }
.sk-qh { font-size: 18px; color: var(--fg); border-bottom: 2px solid var(--fg); align-items: center; flex-wrap: wrap; row-gap: 6px; }
/* 見出しの右：習得数と最終演習日 */
.sk-stat { margin-left: auto; display: flex; flex-wrap: wrap; justify-content: flex-end; align-items: baseline; gap: 0 12px; font-size: 12.5px; font-weight: 500; color: var(--fg-2); }
.sk-stat b { font: 700 16px/1 var(--num); color: var(--accent); margin-right: 1px; }
.sk-stat .sk-d { color: var(--fg-3); }
.sk-tools { display: flex; justify-content: flex-end; gap: 6px; margin: -2px 0 4px; }
.sk-tg { font: inherit; font-size: 13px; line-height: 1.3; padding: 5px 10px; border: 1px solid var(--line-2); border-radius: 4px; background: var(--bg); color: var(--fg); cursor: pointer; white-space: nowrap; }
.sk-tg[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: #fff; }
ol.sk-qs { list-style: none; margin: 0; padding: 0; }
.sk-q { display: grid; grid-template-columns: 40px minmax(0, 1fr) minmax(0, 34%); gap: 2px 14px; padding: 8px 0; border-bottom: 1px solid var(--line); scroll-margin-top: 16px; }
.sk-q .sk-no { grid-row: 1 / span 3; display: grid; align-content: start; justify-items: start; gap: 4px; }
.sk-q .sk-no b { font: 700 14px/1.55 var(--num); color: var(--accent); }
.sk-ck { width: 17px; height: 17px; border: 1.5px solid var(--fg-2); border-radius: 2px; background: var(--bg); padding: 0; cursor: pointer; display: grid; place-items: center; }
.sk-ck[aria-pressed="true"], .sk-ck.sk-on { background: var(--accent); border-color: var(--accent); }
.sk-ck[aria-pressed="true"]::after, .sk-ck.sk-on::after { content: ""; width: 5px; height: 9px; border: solid #fff; border-width: 0 2px 2px 0; transform: translateY(-1px) rotate(45deg); }
.sk-ck.sk-ng { border-color: var(--red); background: var(--red-soft); color: var(--red); font: 700 12px/1 var(--sans); }
.sk-ck.sk-ng::after { content: "×"; }
.sk-q .sk-qq { font-weight: 700; font-size: 15.5px; line-height: 1.6; }
.sk-cnt { white-space: nowrap; }
.sk-st { font-size: 12px; letter-spacing: -.05em; color: #b8902a; margin-left: 4px; white-space: nowrap; }
.sk-st i { font-style: normal; color: var(--line-2); }
.sk-hs { display: inline-block; vertical-align: 2px; margin-left: 4px; font-size: 10.5px; font-weight: 700; line-height: 1; padding: 3px 5px; background: var(--fg-2); color: #fff; border-radius: 2px; }
.sk-q .sk-an { grid-column: 3; grid-row: 1; border-left: 1px solid var(--line-2); padding-left: 12px; }
.sk-at { color: var(--red); font-weight: 700; font-size: 15px; line-height: 1.6; cursor: pointer; }
/* 赤シートのかわり：答えと一言は押すまで隠す。ボタンはどの問題も同じ大きさ */
.sk-see { display: block; width: 100%; height: 34px; padding: 0; border: 1px solid var(--red-line); border-radius: 6px; background: var(--red-soft); color: var(--red); font: 700 13px/1 var(--sans); letter-spacing: .08em; cursor: pointer; }
.sk-see:hover { background: var(--red-soft-2); }
.sk-q:not(.sk-open) .sk-at, .sk-q.sk-open .sk-see { display: none; }
.sk-kh { display: none; }
/* 答えを見たあと：PC は「Enter 習得済みにして次へ」（js/sankousho/drill.js） */
@media (hover: hover) and (pointer: fine) {
  .sk-q.sk-cur.sk-open:not(.sk-done) .sk-kh { display: flex; align-items: center; gap: 6px; margin-top: 4px; font-size: 11px; color: var(--fg-3); }
  .sk-kh kbd { padding: 1px 5px; border: 1px solid var(--line-2); border-bottom-width: 2px; border-radius: 4px; font: 500 10px/1.4 var(--sans); color: var(--fg-2); }
}
.sk-q .sk-ex { grid-column: 2 / span 2; font-size: 13.5px; color: var(--fg-2); }
.sk-q .sk-meta { grid-column: 2 / span 2; display: flex; flex-wrap: wrap; gap: 2px 10px; align-items: baseline; font-size: 12px; }
.sk-ids a { font-family: var(--num); font-size: 11.5px; color: var(--fg-3); text-decoration: none; border-bottom: 1px dotted var(--line-2); margin-right: 6px; white-space: nowrap; }
.sk-ids a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.sk-ids .sk-nol { font-family: var(--num); font-size: 11.5px; color: var(--fg-3); margin-right: 6px; white-space: nowrap; }
.sk-back { font: inherit; font-size: 12px; color: var(--accent); background: none; border: 0; padding: 0; cursor: pointer; white-space: nowrap; }
.sk-q:not(.sk-open) .sk-ex { display: none; }
.sk-only .sk-q.sk-done { display: none; }
@media (max-width: 600px) {
  .sk-q { grid-template-columns: 34px minmax(0, 1fr); }
  .sk-q .sk-no { grid-row: 1 / span 4; }
  .sk-q .sk-an { grid-column: 2; grid-row: 2; border-left: 0; padding: 6px 0 2px; }
  .sk-see { max-width: 260px; }
  .sk-q .sk-ex, .sk-q .sk-meta { grid-column: 2; }
}

/* ○× */
.sk-oxs { margin-top: 26px; scroll-margin-top: 16px; }
.sk-oxs .sk-qh { font-size: 16px; color: var(--accent); border-bottom: 1px solid var(--line-2); }
ol.sk-ox { list-style: none; margin: 0; padding: 0; }
.sk-o { display: grid; grid-template-columns: 22px 18px minmax(0, 1fr) auto; gap: 2px 8px; align-items: start; padding: 6px 0; border-bottom: 1px dashed var(--line-2); }
.sk-o .sk-n { font: 500 13px/1.7 var(--num); color: var(--fg-3); text-align: right; }
.sk-o .sk-ck { margin-top: 4px; cursor: default; }
.sk-o .sk-s { font-size: 14.5px; line-height: 1.7; }
.sk-o .sk-ids { margin-left: 6px; }
.sk-oxg { margin: 10px 0 0; font-size: 13px; font-weight: 700; color: var(--accent); }
.sk-oxl.sk-only .sk-o.sk-skip, .sk-oxl.sk-only .sk-g:not(:has(.sk-o:not(.sk-skip))) { display: none; }
.sk-kk { display: inline-block; vertical-align: 1px; margin-left: 4px; font-size: 10.5px; font-weight: 700; line-height: 1; padding: 2px 4px; border: 1px solid var(--red); color: var(--red); border-radius: 2px; }
.sk-o .sk-pick { display: flex; gap: 4px; }
.sk-o .sk-pick button { font: 700 14px/1 var(--sans); width: 30px; height: 28px; border: 1px solid var(--line-2); border-radius: 4px; background: var(--bg); color: var(--fg-2); cursor: pointer; }
.sk-o .sk-r { grid-column: 3 / span 2; font-size: 13.5px; color: var(--fg-2); display: none; }
.sk-o .sk-r b { margin-right: 6px; } .sk-o .sk-r .sk-ok { color: var(--accent); } .sk-o .sk-r .sk-ng { color: var(--red); }
.sk-o.sk-done .sk-r { display: block; }
.sk-o.sk-done .sk-pick button { cursor: default; }
.sk-o.sk-done .sk-pick button.sk-right { background: var(--accent); border-color: var(--accent); color: #fff; }
.sk-o.sk-done .sk-pick button.sk-wrong { background: var(--red-soft); border-color: var(--red); color: var(--red); }
.sk-o .sk-again { font: inherit; font-size: 12px; color: var(--accent); background: none; border: 0; padding: 0; margin-left: 8px; cursor: pointer; }

.sk-flash { animation: sk-fl 1.4s ease-out; }
@keyframes sk-fl { 0% { background: color-mix(in srgb, var(--marker) 55%, transparent); } 100% { background: transparent; } }
@media (max-width: 479px) { .sk-hd h1 { font-size: 24px; } .sk-rank { width: 54px; height: 54px; } .sk-rank b { font-size: 26px; } table { font-size: 13.5px; } th, td { padding: 6px 8px; } .sk-first { padding: 12px 14px 14px; } }
/* 折り返し：文の切れ目（かなのあと・句読点のあと・かっこの前）でだけ折り返す。印（wbr）は読み込み時に入れる */
.sk { word-break: keep-all; overflow-wrap: anywhere; line-break: strict; }
.sk th { overflow-wrap: normal; }
/* 表示の設定 */
.sk-lvnote { margin-top: 8px; font-size: 13.5px; line-height: 1.65; color: var(--fg-2); }
.sk-prefs { margin-top: 2px; font-size: 13px; color: var(--fg-2); }
.sk-prefs summary { width: max-content; margin-left: auto; padding: 4px 0; list-style: none; color: var(--accent); cursor: pointer; }
.sk-prefs summary::-webkit-details-marker { display: none; }
.sk-prefs summary::after { content: ""; display: inline-block; width: 6px; height: 6px; margin: 0 2px 2px 7px; border: solid currentColor; border-width: 0 1.5px 1.5px 0; transform: rotate(45deg); }
.sk-prefs[open] summary::after { transform: translateY(3px) rotate(-135deg); }
.sk-prefs label { display: flex; gap: 10px; align-items: flex-start; margin-top: 6px; padding: 10px 14px; background: var(--bg-2); border-radius: 4px; line-height: 1.6; cursor: pointer; }
.sk-prefs input { flex: none; width: 17px; height: 17px; margin: 2px 0 0; accent-color: var(--accent); }
/* スマホ：画面の幅をいっぱいに使う */
@media (max-width: 600px) {
  .sk-first { margin-inline: -16px; padding-inline: 16px; }
  .sk-tbl { margin-inline: -16px; }
  .sk-tbl th:first-child, .sk-tbl td:first-child { border-left: 0; padding-left: 16px; }
  .sk-tbl th:last-child, .sk-tbl td:last-child { border-right: 0; padding-right: 16px; }
  .sk-tbl tr > :only-child { padding-inline: 16px; }
  .sk table.sk-kv, .sk-kv tbody, .sk-kv tr, .sk-kv th, .sk-kv td { display: block; }
  .sk-kv tr { border-top: 1px solid var(--line-2); }
  .sk-kv tr:last-child { border-bottom: 1px solid var(--line-2); }
  .sk-kv th, .sk-kv td, .sk-tbl .sk-kv th:first-child, .sk-tbl .sk-kv td:last-child { border: 0; padding-inline: 16px; }
  .sk-kv th { padding-block: 9px 0; white-space: normal; color: var(--accent); }
  .sk-tbl .sk-kv th:first-child { width: auto; } /* 見出しを上に積むので、横並びのときの幅（22%）を外す */
  .sk-kv td { padding-block: 2px 10px; }
  .sk-q { grid-template-columns: 30px minmax(0, 1fr); gap: 2px 10px; }
  .sk-see { max-width: none; height: 38px; }
  .sk-o { grid-template-columns: 24px minmax(0, 1fr) auto; grid-template-rows: auto 1fr auto; gap: 2px 8px; }
  .sk-o .sk-n { grid-area: 1 / 1; text-align: left; line-height: 1.5; }
  .sk-o .sk-ck { grid-area: 2 / 1; align-self: start; margin-top: 2px; }
  .sk-o .sk-s { grid-area: 1 / 2 / 3 / 3; }
  .sk-o .sk-pick { grid-area: 1 / 3 / 3 / 4; }
  .sk-o .sk-r { grid-column: 2 / 4; grid-row: 3; }
  .sk-o .sk-pick button { width: 38px; height: 34px; }
  .sk-tg { padding: 7px 12px; }
}

/* 無料ページ（/sankousho/…）：ほかのテーマ・一覧 */
.sk-more { max-width: 860px; margin: 8px auto 56px; padding: 16px 18px; background: var(--bg-2); font-size: 14px; }
.sk-more-h { font-weight: 700; color: var(--accent); margin: 0 0 6px; }
.sk-more ul { margin: 0; padding-left: 1.2em; display: grid; gap: 2px; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.sk-more a { color: var(--accent); }
.sk-more-cta { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 18px; margin: 14px 0 0; }
.sk-more-cta .btn { color: var(--on-accent); }
.sk-idx h1 { font-size: 28px; margin: 0; }
.sk-idx > .sk-sub { margin-top: 4px; font-size: 14px; color: var(--fg-2); }
.sk-idx-f { margin-top: 22px; }
.sk-idx-f h2 { font-size: 17px; color: var(--accent); padding-bottom: 4px; border-bottom: 1px solid var(--line-2); margin: 0 0 6px; }
.sk-idx-f ol { list-style: none; margin: 0; padding: 0; display: grid; gap: 0 18px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.sk-idx-f a { display: grid; padding: 8px 0; border-bottom: 1px solid var(--line); color: var(--fg); text-decoration: none; }
.sk-idx-f a b { font-size: 15.5px; color: var(--accent); }
.sk-idx-f a span { font-size: 12.5px; color: var(--fg-2); }

/* 無料ページ（/sankousho/…）のヘッダー：参考書の一覧・演習メニュー・無料で試す（アプリの画面ではトップだけに出す部品なので、ここで出す） */
body.sk-page .sh .hd-cta { display: inline-flex !important; }
@media (min-width: 600px) { body.sk-page .sh .hd-link { display: inline-flex !important; } }