/* ==========================================================================
   Curioforj — 学ぶ(/learn/)
   style.css のトークンを前提とする追い掛けCSS。読み物向けの組版のみ足す。
   ========================================================================== */

/* ---- 共通: ページヘッダー(ライト面) ---- */
.learn-head {
  padding-block: 4rem 3rem;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 768px) {
  .learn-head { padding-block: 5.5rem 4rem; }
}

.learn-head .section-lead { margin-top: 1.25rem; }

/* ヘッダーナビ(LP側と共通) */
.header-nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header-cta[aria-current="page"] {
  color: var(--forge-bright);
}

/* ---- 記事一覧 ---- */
.article-list {
  max-width: 44rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.article-list-item {
  border-top: 1px solid var(--line);
}

.article-list-item:last-child {
  border-bottom: 1px solid var(--line);
}

.article-link {
  display: block;
  padding-block: 1.75rem;
  text-decoration: none;
  color: inherit;
}

.article-link:hover .entry-title { color: var(--forge); }
.article-link:hover .entry-arrow { transform: translateX(0.25em); }

.article-link:focus-visible {
  outline: 2px solid var(--forge);
  outline-offset: 4px;
}

.entry-meta {
  display: flex;
  align-items: baseline;
  gap: 1em;
  font-size: 0.8125rem;
  color: var(--ink-mute);
  letter-spacing: 0.06em;
}

.entry-meta time { font-variant-numeric: tabular-nums; }

.entry-tag { color: var(--forge); font-weight: 500; }

.entry-title {
  margin-top: 0.625rem;
  font-size: 1.1875rem;
  font-weight: 700;
  line-height: 1.6;
  letter-spacing: 0.01em;
  font-feature-settings: "palt";
  transition: color var(--duration) var(--ease);
}

.entry-excerpt {
  max-width: 38rem;
  margin-top: 0.5rem;
  font-size: 0.9375rem;
  color: var(--ink-soft);
}

.entry-arrow {
  display: inline-block;
  margin-left: 0.4em;
  color: var(--forge);
  transition: transform var(--duration) var(--ease);
}

/* ---- 棚(無料ガイド/教材) ---- */
.learn-shelf { padding-block: 3.5rem 0; }
.learn-shelf-last { padding-block-end: 6rem; }

@media (min-width: 768px) {
  .learn-shelf { padding-block-start: 4.5rem; }
  .learn-shelf-last { padding-block-end: 7rem; }
}

.learn-shelf .section-lead { margin-top: 0; }
.learn-shelf .article-list { margin-top: 2rem; }

.entry-price {
  font-weight: 700;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

/* ---- 掲載方針(アフィリエイト明示の土台) ---- */
.learn-policy {
  max-width: 44rem;
  margin-top: 4rem;
  padding: 1.5rem 1.75rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 0.875rem;
  color: var(--ink-soft);
}

.learn-policy .policy-label {
  display: block;
  margin-bottom: 0.375rem;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--ink-mute);
}

/* ---- 記事ページ ---- */
.article {
  padding-block: 3.5rem 5rem;
}

@media (min-width: 768px) {
  .article { padding-block: 5rem 7rem; }
}

.breadcrumb {
  font-size: 0.875rem;
  margin-bottom: 2.5rem;
}

.breadcrumb a {
  color: var(--ink-mute);
  text-decoration: none;
  transition: color var(--duration) var(--ease);
}

.breadcrumb a:hover { color: var(--forge); }
.breadcrumb a:focus-visible {
  outline: 2px solid var(--forge);
  outline-offset: 3px;
}

.article-header {
  max-width: 42rem;
  margin-bottom: 3rem;
}

.article-title {
  font-size: clamp(1.5rem, 3vw + 0.6rem, 2.125rem);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0;
  font-feature-settings: "palt";
  text-wrap: balance;
}

.article-meta {
  display: flex;
  align-items: baseline;
  gap: 1em;
  margin-bottom: 1.25rem;
  font-size: 0.8125rem;
  color: var(--ink-mute);
  letter-spacing: 0.06em;
}

.article-meta time { font-variant-numeric: tabular-nums; }

/* アイキャッチ。本文カラムより少しだけ広く */
.article-eyecatch {
  max-width: 42rem;
  margin: 0 0 3rem;
}

.article-eyecatch img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  border: 1px solid var(--line);
}

/* 本文。全角38字前後で固定 */
.article-body {
  max-width: 38rem;
}

.article-body p {
  margin-top: 1.5em;
}

.article-body h2 {
  margin-top: 3.5rem;
  margin-bottom: 0.25rem;
  padding-top: 1.25rem;
  border-top: 2px solid var(--line);
  position: relative;
  font-size: 1.3125rem;
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: 0.01em;
  font-feature-settings: "palt";
}

.article-body h2::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  width: 2.5rem;
  height: 2px;
  background: var(--forge);
}

.article-body ul,
.article-body ol {
  margin: 1.5em 0 0;
  padding-left: 1.4em;
}

.article-body li + li { margin-top: 0.5em; }

.article-body strong { font-weight: 700; }

/* 注釈ボックス(装飾枠はこの1種類だけ) */
.article-note {
  margin-top: 1.75em;
  padding: 1.25rem 1.5rem;
  background: var(--surface-alt);
  border-radius: 6px;
  font-size: 0.9375rem;
  color: var(--ink-soft);
}

/* ---- 記事末尾: 次の一歩 ---- */
.article-next {
  max-width: 38rem;
  margin-top: 4.5rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--line);
}

.article-next .next-label {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--forge);
  margin-bottom: 1rem;
}

.article-next p { color: var(--ink-soft); font-size: 0.9375rem; }

.article-next .next-actions {
  margin-top: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.inline-link {
  color: var(--ink-soft);
  text-decoration: underline;
  text-underline-offset: 0.3em;
  text-decoration-color: rgba(125, 116, 106, 0.45);
  transition: color var(--duration) var(--ease),
              text-decoration-color var(--duration) var(--ease);
}

.inline-link:hover {
  color: var(--forge);
  text-decoration-color: var(--forge);
}

.inline-link:focus-visible {
  outline: 2px solid var(--forge);
  outline-offset: 3px;
}

/* ---- 学ぶセクションの簡易フッター ---- */
.learn-footer {
  background: var(--surface-dark);
  color: var(--on-dark);
  padding-block: 2.5rem;
}

.learn-footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.learn-footer .footer-wordmark { font-size: 1rem; }

.learn-footer-links {
  display: flex;
  gap: 1.75rem;
  font-size: 0.875rem;
}

.learn-footer .copyright {
  margin: 0;
  padding: 0;
  border: none;
  font-size: 0.8125rem;
}