/* ==========================================================================
   /ebooks/ 専用スタイル — 「読める表紙」エディトリアル設計
   紙色 #F7F4ED × ネイビー #0F1A30 × ティール #0891B2
   禁止: グラデ斜めテクスチャ / 片側アクセント色帯 / 英語ウォーターマーク
   ========================================================================== */

.eb-page {
  --eb-paper: #F7F4ED;
  --eb-paper-2: #F2EEE3;
  --eb-ink: #0F1A30;
  --eb-ink-sec: #4B5563;
  --eb-rule: rgba(15, 26, 48, .14);
  --eb-rule-2: rgba(15, 26, 48, .22);
  --eb-teal: #0891B2;
  max-width: 1180px;
  margin: 0 auto;
  padding: 40px 24px 24px;
  overflow-x: hidden;
}

/* ---------- ヒーロー ---------- */
.eb-hero { max-width: 900px; margin: 0 auto 8px; }
.eb-hero-kick {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 11.5px; font-weight: 800; letter-spacing: .16em;
  color: var(--eb-teal); margin: 0 0 18px;
}
.eb-hero-kick::before {
  content: ""; width: 26px; height: 2px; background: var(--eb-teal); border-radius: 2px;
}
.eb-hero h1 {
  font-size: clamp(34px, 6.4vw, 64px);
  font-weight: 900; line-height: 1.22; letter-spacing: -.035em;
  color: var(--eb-ink); margin: 0 0 22px;
}
.eb-hero h1 em { font-style: normal; color: var(--eb-teal); }
.eb-hero-lead {
  font-size: clamp(15px, 1.7vw, 17.5px); line-height: 1.95;
  color: var(--eb-ink-sec); max-width: 720px; margin: 0;
}
.eb-hero-lead b { color: var(--eb-ink); font-weight: 700; }

/* ---------- 群アンカー ---------- */
.eb-jump {
  display: flex; flex-wrap: wrap; gap: 12px;
  margin: 32px 0 10px; padding: 0; list-style: none;
}
.eb-jump a {
  display: flex; align-items: baseline; gap: 10px;
  background: var(--eb-paper); border: 1.5px solid var(--eb-rule);
  border-radius: 12px; padding: 14px 20px;
  text-decoration: none; color: var(--eb-ink);
  font-size: 16px; font-weight: 800; letter-spacing: -.01em;
  transition: border-color .2s, background .2s, transform .2s;
}
.eb-jump a .n {
  font-family: 'Inter', sans-serif; font-size: 12px; font-weight: 800;
  color: var(--eb-teal); letter-spacing: .04em;
}
.eb-jump a:hover { background: #fff; border-color: var(--eb-teal); transform: translateY(-2px); }

/* ---------- 群の見出し ---------- */
/* 全体CSSの section{padding:96px 0} を打ち消す */
.eb-group { padding: 0; margin-top: 78px; }
.eb-group:first-of-type { margin-top: 52px; }
.eb-group-head {
  border-top: 2px solid var(--eb-ink); padding-top: 22px; margin-bottom: 34px;
  scroll-margin-top: 96px;
}
.eb-group-no {
  display: inline-block; font-family: 'Inter', sans-serif;
  font-size: 12px; font-weight: 800; letter-spacing: .18em;
  color: var(--eb-teal); margin-bottom: 12px;
}
.eb-group-head h2 {
  font-size: clamp(26px, 3.6vw, 40px); font-weight: 900;
  line-height: 1.3; letter-spacing: -.03em; color: var(--eb-ink); margin: 0 0 14px;
}
.eb-group-head p {
  font-size: 15px; line-height: 1.95; color: var(--eb-ink-sec);
  max-width: 720px; margin: 0;
}
.eb-group-head p a { color: var(--eb-teal); font-weight: 700; }
.eb-group-count {
  display: inline-block; margin-left: 12px; vertical-align: 4px;
  font-size: 13px; font-weight: 800; color: var(--eb-ink-sec);
}

/* テーマ小見出し */
.eb-theme {
  display: flex; align-items: center; gap: 14px;
  margin: 46px 0 20px; font-size: 19px; font-weight: 900;
  letter-spacing: -.02em; color: var(--eb-ink);
}
.eb-theme::after {
  content: ""; flex: 1; height: 1px; background: var(--eb-rule);
}
.eb-group > .eb-theme:first-of-type { margin-top: 8px; }

/* ---------- グリッド ---------- */
.eb-grid { display: grid; gap: 26px; }
.eb-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.eb-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

/* ---------- カード ---------- */
.eb-card {
  display: flex; flex-direction: column; text-align: left;
  background: #fff; border: 1.5px solid var(--eb-rule); border-radius: 16px;
  overflow: hidden; padding: 0; margin: 0; width: 100%;
  font: inherit; color: inherit; cursor: pointer;
  transition: border-color .22s ease, box-shadow .22s ease, transform .22s ease;
}
.eb-card:hover, .eb-card:focus-visible {
  border-color: var(--eb-ink); transform: translateY(-4px);
  box-shadow: 0 18px 34px -22px rgba(15, 26, 48, .34);
}
.eb-card:focus-visible { outline: 2px solid var(--eb-teal); outline-offset: 3px; }

/* --- 表紙（その場で読める・ミニチュアスクショ禁止） --- */
.eb-cover {
  position: relative; display: block; background: var(--eb-paper);
  border-bottom: 1.5px solid var(--eb-rule-2);
  aspect-ratio: 4 / 3; padding: 16px;
}
.eb-card--report .eb-cover { aspect-ratio: 16 / 9; }
.eb-cover::before {
  content: ""; position: absolute; inset: 11px;
  border: 1px solid var(--eb-rule-2); border-radius: 4px; pointer-events: none;
}
.eb-card:hover .eb-cover { background: var(--eb-paper-2); }

.eb-cover-top {
  position: relative; z-index: 1;
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  padding: 4px 8px 0;
}
.eb-tag-free {
  display: inline-block; background: var(--eb-ink); color: #fff;
  font-family: 'Inter', sans-serif; font-size: 9.5px; font-weight: 800;
  letter-spacing: .13em; padding: 4px 9px; border-radius: 4px;
}
.eb-tag-pg {
  display: inline-block; border: 1px solid var(--eb-rule-2); color: var(--eb-ink);
  font-size: 10.5px; font-weight: 800; letter-spacing: .04em;
  padding: 3px 9px; border-radius: 4px; background: rgba(255, 255, 255, .55);
}
.eb-tag-no {
  margin-left: auto; font-family: 'Inter', sans-serif;
  font-size: 10px; font-weight: 800; letter-spacing: .14em;
  color: rgba(15, 26, 48, .45);
}

.eb-cover-mid {
  position: relative; z-index: 1;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 9px; text-align: center; padding: 10px 18px;
  min-height: 0; flex: 1;
}
.eb-card--report .eb-cover-mid { padding: 6px 26px; }
.eb-cover { display: flex; flex-direction: column; }
.eb-ico {
  font-family: 'Material Symbols Rounded'; font-weight: 400; font-style: normal;
  font-size: 30px; line-height: 1; color: var(--eb-ink); opacity: .5;
  -webkit-font-feature-settings: 'liga'; font-variant-ligatures: none;
  letter-spacing: normal; text-transform: none; white-space: nowrap;
  word-wrap: normal; direction: ltr;
}
.eb-card--report .eb-ico { font-size: 34px; }
.eb-kw {
  font-size: clamp(26px, 3.4vw, 36px); font-weight: 900;
  letter-spacing: .05em; line-height: 1.16; color: var(--eb-ink);
}
.eb-card--report .eb-kw { font-size: clamp(30px, 3.9vw, 46px); }
.eb-sub {
  font-size: 12.5px; font-weight: 700; line-height: 1.7;
  color: rgba(15, 26, 48, .62); letter-spacing: .01em;
}

/* --- 本文 --- */
.eb-body { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }
.eb-cat {
  font-size: 11px; font-weight: 800; letter-spacing: .1em;
  color: var(--eb-teal); margin-bottom: 10px;
}
.eb-body h3 {
  font-size: 19px; font-weight: 900; line-height: 1.5;
  letter-spacing: -.02em; color: var(--eb-ink); margin: 0 0 12px;
}
.eb-card--report .eb-body h3 { font-size: 22px; }
.eb-body p {
  font-size: 14px; line-height: 1.85; color: var(--eb-ink-sec);
  margin: 0 0 18px; flex: 1;
}
.eb-foot {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  border-top: 1px solid var(--eb-rule); padding-top: 14px; margin-top: auto;
}
.eb-foot .pg { font-size: 12.5px; font-weight: 700; color: var(--eb-ink-sec); }
.eb-dl { font-size: 14px; font-weight: 800; color: var(--eb-teal); letter-spacing: -.01em; }
.eb-card:hover .eb-dl { text-decoration: underline; text-underline-offset: 3px; }

/* ---------- 診断CTA（タイプ別群の中に置く枠） ---------- */
.eb-diag {
  display: flex; flex-direction: column; justify-content: center;
  background: var(--eb-paper); border: 1.5px solid var(--eb-rule-2);
  border-radius: 16px; padding: 26px 24px;
}
.eb-diag .k {
  font-size: 11px; font-weight: 800; letter-spacing: .1em;
  color: var(--eb-teal); margin-bottom: 10px;
}
.eb-diag h3 {
  font-size: 21px; font-weight: 900; line-height: 1.45;
  letter-spacing: -.02em; color: var(--eb-ink); margin: 0 0 12px;
}
.eb-diag p { font-size: 14px; line-height: 1.85; color: var(--eb-ink-sec); margin: 0 0 20px; }
.eb-diag p b { color: var(--eb-ink); }
.eb-diag a {
  align-self: flex-start; display: inline-block;
  background: var(--eb-ink); color: #fff; text-decoration: none;
  font-size: 14.5px; font-weight: 800; padding: 13px 24px; border-radius: 10px;
  transition: background .2s;
}
.eb-diag a:hover { background: var(--eb-teal); }

/* ---------- 末尾ノート ---------- */
.eb-note {
  margin: 70px 0 0; border-top: 2px solid var(--eb-ink); padding-top: 20px;
  font-size: 14px; line-height: 1.95; color: var(--eb-ink-sec); max-width: 760px;
}
.eb-note b { color: var(--eb-ink); }

/* ---------- レスポンシブ ---------- */
@media (max-width: 1000px) {
  .eb-grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 700px) {
  .eb-page { padding: 30px 18px 20px; }
  .eb-grid--2, .eb-grid--3 { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .eb-jump { gap: 9px; }
  .eb-jump a { padding: 12px 16px; font-size: 14.5px; }
  .eb-group { margin-top: 56px; }
  .eb-cover, .eb-card--report .eb-cover { aspect-ratio: 16 / 9; }
  .eb-kw, .eb-card--report .eb-kw { font-size: 32px; }
  .eb-body h3, .eb-card--report .eb-body h3 { font-size: 18px; }
  .eb-foot { flex-direction: column; align-items: flex-start; gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  .eb-card, .eb-jump a { transition: none; }
}