/* ================================================================
   academy-page.css — academy.html だけで使うスタイル
   共通部分(トークン・ヘッダー・ボタン・見出し・折りたたみ・CTA・フッターなど)は
   css/chem-atlas-new.css。このファイルはその後に読み込む
   ================================================================ */

/* ---------- 本質とは ---------- */
.acd-essence {
  padding: var(--acd-section-y) 0;
  background: var(--acd-navy);
  color: rgba(255, 255, 255, .88);
  text-align: left;
}
.acd-essence .acd-eyebrow { color: #fff; }
.acd-essence .acd-eyebrow span { color: var(--acd-light-accent); }
.acd-essence__lead {
  color: #fff;
  font-family: var(--acd-font-serif);
  font-size: clamp(1.45rem, 1.05rem + 1.8vw, 2.2rem);
  font-weight: 700; line-height: 1.6;
}
.acd-essence__body { max-width: var(--acd-prose); margin-top: 28px; }
.acd-page .acd-essence__body strong {
  color: #fff;
  background: linear-gradient(transparent 62%, rgba(143, 211, 223, .35) 62%);
}

/* ---------- WHAT ---------- */
.acd-facts {
  display: grid; gap: 1px;
  background: var(--acd-line);
  border: 1px solid var(--acd-line);
  border-radius: var(--acd-radius); overflow: hidden;
}
@media (min-width: 640px) { .acd-facts { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1100px) { .acd-facts { grid-template-columns: repeat(4, 1fr); } }
.acd-fact {
  display: grid; grid-template-columns: auto 1fr; column-gap: 14px; align-content: start;
  padding: 28px 24px;
  background: #fff;
}
.acd-fact__icon { grid-row: span 2; width: 28px; height: 28px; margin-top: 2px; color: var(--acd-accent); }
.acd-fact dt { color: var(--acd-muted); font-size: .82rem; font-weight: 700; letter-spacing: .12em; }
.acd-fact dd { color: var(--acd-ink); font-weight: 700; font-size: 1.05rem; line-height: 1.6; }
.acd-fact dd small {
  display: block; margin-top: 8px;
  color: var(--acd-muted); font-size: .82rem; font-weight: 400; line-height: 1.7;
}
@media (min-width: 1100px) {
  .acd-fact { grid-template-columns: 1fr; padding: 36px 28px; }
  .acd-fact__icon { grid-row: auto; margin-bottom: 16px; }
}

/* ---------- 流れ ---------- */
.acd-steps { display: grid; gap: 20px; counter-reset: none; }
@media (min-width: 900px) { .acd-steps { grid-template-columns: repeat(3, 1fr); gap: 28px; } }
.acd-step {
  position: relative;
  padding: 32px 28px;
  background: #fff;
  border: 1px solid var(--acd-line);
  border-top: 3px solid var(--acd-navy);
  border-radius: var(--acd-radius);
}
.acd-step__num {
  display: block; margin-bottom: 12px;
  color: var(--acd-accent);
  font-family: var(--acd-font-serif);
  font-size: 2.4rem; font-weight: 700; line-height: 1;
}
.acd-step__title { margin-bottom: 10px; color: var(--acd-navy); font-size: 1.15rem; font-weight: 700; line-height: 1.6; }
.acd-step__title span { font-size: .85em; font-weight: 400; }
@media (min-width: 900px) {
  .acd-step:not(:last-child)::after {
    /* ステップの間の矢印 */
    content: ""; position: absolute; top: 50%; right: -20px;
    width: 12px; height: 12px;
    border-top: 1.5px solid var(--acd-navy); border-right: 1.5px solid var(--acd-navy);
    transform: translateY(-50%) rotate(45deg);
  }
}
.acd-cycle {
  display: flex; align-items: flex-start; gap: 14px;
  margin-top: 32px; padding: 22px 24px;
  background: var(--acd-bg-tint);
  border-radius: var(--acd-radius);
}
.acd-cycle__icon { width: 26px; height: 26px; margin-top: 2px; color: var(--acd-accent); }
.acd-cycle span { color: var(--acd-muted); font-size: .9em; }

/* ---------- 課題 ---------- */
.acd-question {
  margin: 40px 0;
  padding: 40px 24px;
  background: #fff;
  border: 1px solid var(--acd-line);
  border-radius: var(--acd-radius);
  text-align: center;
}
.acd-question blockquote p {
  color: var(--acd-navy);
  font-family: var(--acd-font-serif);
  font-size: clamp(1.5rem, 1.1rem + 2vw, 2.4rem);
  font-weight: 700;
}
.acd-question blockquote p::before { content: "「"; }
.acd-question blockquote p::after  { content: "」"; }
.acd-question figcaption { margin-top: 12px; color: var(--acd-muted); }

.acd-rules { display: grid; gap: 20px; }
@media (min-width: 900px) { .acd-rules { grid-template-columns: 1fr 1fr; gap: 28px; } }
.acd-rule {
  padding: 28px 24px;
  background: #fff;
  border-left: 3px solid var(--acd-accent);
  border-radius: 0 var(--acd-radius) var(--acd-radius) 0;
}
.acd-rule .acd-h3 { margin-bottom: 10px; }
.acd-rule--strong { border-left-color: var(--acd-bad); }

.acd-summary {
  margin: 48px auto 0; max-width: 34em;
  color: var(--acd-navy);
  font-family: var(--acd-font-serif);
  font-size: clamp(1.1rem, .95rem + .8vw, 1.4rem);
  font-weight: 700; line-height: 1.9; text-align: center;
}
.acd-summary span { color: var(--acd-muted); font-family: var(--acd-font-sans); font-size: .8em; font-weight: 400; display: block; }

.acd-compare__q { margin-bottom: 16px; color: var(--acd-ink); font-weight: 700; }
.acd-compare { display: grid; gap: 20px; }
@media (min-width: 900px) { .acd-compare { grid-template-columns: 1fr 1fr; } }
.acd-compare__card { padding: 24px; border-radius: var(--acd-radius); border: 1px solid; }
.acd-compare__card--bad { background: var(--acd-bad-bg); border-color: #efd3cb; }
.acd-compare__card--good { background: var(--acd-good-bg); border-color: #cfe5d8; }
.acd-compare__tag { display: flex; align-items: center; gap: 8px; margin-bottom: 14px; font-weight: 700; }
.acd-compare__card--bad .acd-compare__tag { color: var(--acd-bad); }
.acd-compare__card--good .acd-compare__tag { color: var(--acd-good); }
.acd-compare__answer {
  padding: 18px; background: #fff; border-radius: 4px;
  color: var(--acd-ink); font-size: .95rem; line-height: 1.8;
}
.acd-compare__answer p + p { margin-top: .7em; }
.acd-compare__card--bad .acd-compare__answer { font-family: var(--acd-font-serif); }
.acd-compare__note { margin-top: 14px; font-size: .9rem; line-height: 1.75; }

/* ---------- Slack ---------- */
.acd-bubbles { display: grid; gap: 10px; margin: 1.4em 0; }
.acd-bubbles li {
  display: flex; align-items: center; gap: 10px;
  width: fit-content; max-width: 100%;
  padding: 10px 18px;
  background: var(--acd-bg-tint);
  border-radius: 18px 18px 18px 4px;
  color: var(--acd-navy); font-weight: 400;
}
.acd-bubbles li:nth-child(2) { margin-left: 24px; }
.acd-bubbles .acd-icon { color: var(--acd-accent); }
.acd-bubbles li::before { content: none; }

/* ---------- 評価 ---------- */
.acd-scores { display: grid; gap: 16px; margin-top: 40px; }
@media (min-width: 900px) { .acd-scores { grid-template-columns: repeat(3, 1fr); gap: 24px; } }
.acd-score {
  padding: 28px 24px;
  background: #fff;
  border: 1px solid var(--acd-line);
  border-radius: var(--acd-radius);
}
.acd-score dt { color: var(--acd-muted); font-size: .85rem; font-weight: 700; letter-spacing: .1em; }
.acd-score dd { margin-top: 6px; font-size: .92rem; line-height: 1.75; }
.acd-score b {
  display: block; margin-bottom: 8px;
  color: var(--acd-navy);
  font-family: var(--acd-font-serif); font-size: 2.6rem; line-height: 1.2;
}
.acd-score b small { margin-left: 4px; font-family: var(--acd-font-sans); font-size: .9rem; font-weight: 700; }
.acd-score--key { background: var(--acd-navy); border-color: var(--acd-navy); color: rgba(255, 255, 255, .88); }
.acd-score--key dt { color: var(--acd-light-accent); }
.acd-page .acd-score--key b { color: #fff; }

.acd-table {
  width: 100%; max-width: 420px; margin-bottom: 20px;
  border-collapse: collapse; text-align: center;
}
.acd-table caption { margin-bottom: 10px; color: var(--acd-muted); font-size: .88rem; text-align: left; }
.acd-table th, .acd-table td { padding: 10px 12px; border-bottom: 1px solid var(--acd-line); }
.acd-table thead th { background: var(--acd-bg-alt); color: var(--acd-ink); font-size: .88rem; }
.acd-table td:last-child { color: var(--acd-navy); font-family: var(--acd-font-serif); font-weight: 700; }

/* ---------- 再履修 ---------- */
.acd-retake { background: var(--acd-bg); }

/* ---------- 塾長 ---------- */
.acd-teacher__card {
  display: grid; gap: 28px;
  padding: 32px 24px;
  background: #fff;
  border: 1px solid var(--acd-line);
  border-radius: var(--acd-radius);
}
@media (min-width: 768px) {
  .acd-teacher__card { grid-template-columns: 160px 1fr; gap: 48px; padding: 48px; }
}
.acd-teacher__photo .acd-portrait { width: 120px; height: 120px; }
@media (min-width: 768px) { .acd-teacher__photo .acd-portrait { width: 160px; height: 160px; } }
.acd-teacher__body { max-width: var(--acd-prose); }
.acd-teacher__body > p + p { margin-top: 1em; }
.acd-teacher__name { color: var(--acd-navy); font-family: var(--acd-font-serif); font-size: 1.6rem; font-weight: 700; letter-spacing: .12em; }
.acd-teacher__name span { display: inline-block; margin-left: 14px; color: var(--acd-muted); font-family: var(--acd-font-sans); font-size: .85rem; font-weight: 400; letter-spacing: .1em; }
.acd-teacher__role { color: var(--acd-muted); font-size: .9rem; }
.acd-teacher__points { display: grid; gap: 10px; margin-top: 20px; }
.acd-teacher__points li { position: relative; padding-left: 20px; }
.acd-teacher__points li::before {
  content: ""; position: absolute; left: 0; top: .8em;
  width: 8px; height: 1.5px; background: var(--acd-accent);
}
.acd-teacher__links { display: flex; flex-wrap: wrap; gap: 12px 28px; margin-top: 28px; }

/* ---------- 料金 ---------- */
.acd-plans { display: grid; gap: 20px; }
@media (min-width: 900px) { .acd-plans { grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: stretch; } }
.acd-plan {
  display: flex; flex-direction: column;
  padding: 32px 28px;
  background: #fff;
  border: 1px solid var(--acd-line);
  border-radius: var(--acd-radius);
}
.acd-plan__name { color: var(--acd-navy); font-size: 1.15rem; font-weight: 700; }
.acd-plan__target { color: var(--acd-muted); font-size: .88rem; }
.acd-plan__price {
  margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--acd-line);
  color: var(--acd-muted);
}
.acd-plan__price b { color: var(--acd-navy); font-family: var(--acd-font-serif); font-size: 2.2rem; letter-spacing: .02em; }
.acd-plan__total { color: var(--acd-text); font-size: .9rem; }
.acd-plan__list {
  display: grid; grid-template-columns: 1fr 1fr; gap: 6px 12px;
  margin-top: 20px; padding-top: 16px; border-top: 1px dashed var(--acd-line);
  font-size: .88rem;
}
.acd-plan__list li { position: relative; padding-left: 14px; }
.acd-plan__list li::before {
  content: ""; position: absolute; left: 0; top: .75em;
  width: 5px; height: 5px; border-radius: 50%; background: var(--acd-accent);
}
.acd-plan--special { border-color: var(--acd-navy); box-shadow: inset 0 3px 0 var(--acd-navy); }

.acd-terms {
  margin-top: 64px; padding: 28px 24px;
  background: var(--acd-bg-alt);
  border-radius: var(--acd-radius);
  font-size: .92rem; line-height: 1.8;
}
@media (min-width: 768px) { .acd-terms { padding: 36px 40px; } }
.acd-terms .acd-h3 { margin-bottom: 14px; font-size: 1rem; }
.acd-terms ul { display: grid; gap: 6px; margin-bottom: 16px; }
.acd-terms li { position: relative; padding-left: 1.1em; }
.acd-terms li::before { content: "・"; position: absolute; left: 0; color: var(--acd-muted); }

/* ---------- FAQ ---------- */
.acd-faq__list { border-top: 1px solid var(--acd-line); }
.acd-qa { border-bottom: 1px solid var(--acd-line); }
.acd-qa > summary {
  position: relative;
  display: flex; gap: 14px;
  padding: 22px 44px 22px 0;
  color: var(--acd-navy); font-weight: 700; line-height: 1.7;
  cursor: pointer; list-style: none;
}
.acd-qa > summary::-webkit-details-marker { display: none; }
.acd-qa > summary::before { content: "Q"; flex: none; color: var(--acd-accent); font-family: var(--acd-font-serif); font-size: 1.15rem; line-height: 1.5; }
.acd-qa > summary::after { right: 8px; }
.acd-qa > p { position: relative; padding: 0 8px 24px 30px; }
.acd-teacher__body > .acd-teacher__role { margin-top: 4px; }