/* 足助新聞 謎めぐり2026｜ヒントページ専用CSS
 * style.css（公式サイト共通）の後に読み込んでください。
 * 既存サイトのCSSは変更する必要がありません。
 */

.hints-page {
  --hint-line: #d9c9ae;
  --hint-card-bg: #fffaf1;
}

.hints-page .hints-header-return {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--rule);
  color: var(--red);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}
.hints-page .hints-header-return:hover {
  color: var(--white);
  background: var(--red);
}

.hints-hero {
  color: var(--white);
  background:
    radial-gradient(ellipse at 92% 12%, rgba(201, 167, 106, .12), transparent 54%),
    radial-gradient(ellipse at 5% 100%, rgba(161, 75, 66, .15), transparent 58%),
    var(--red-dark);
  padding: 56px 0 62px;
  border-bottom: 4px solid var(--gold);
}
.hints-hero__inner { max-width: 1000px; }
.hints-hero__eyebrow {
  display: block;
  color: #dfc28a;
  font: 12px/1.6 Georgia, serif;
  letter-spacing: .2em;
  margin-bottom: 15px;
}
.hints-hero h1 {
  font-size: clamp(31px, 4.1vw, 48px);
  line-height: 1.5;
  letter-spacing: .14em;
  margin: 0 0 24px;
}
.hints-hero h1::after {
  content: "";
  display: block;
  width: 52px;
  height: 1px;
  background: #d7b978;
  margin-top: 15px;
}
.hints-hero__lead { max-width: 850px; }
.hints-hero__lead p {
  font-size: 15px;
  line-height: 1.95;
  margin-top: 6px;
}
.hints-hero__lead p:first-child { margin-top: 0; }

.hints-main { max-width: 980px; padding-bottom: 76px; }
.hint-navigation {
  position: relative;
  margin: -25px 0 34px;
  padding: 23px 28px 27px;
  background: var(--hint-card-bg);
  border: 1px solid var(--rule);
  border-top: 3px solid var(--gold);
  box-shadow: 0 12px 28px rgba(40, 23, 14, .05);
  scroll-margin-top: calc(var(--header-h) + 12px);
}
.hint-navigation h2 {
  margin: 0 0 17px;
  color: var(--ink);
  font-size: 18px;
  letter-spacing: .04em;
}
.hint-navigation__items {
  display: grid;
  grid-template-columns: repeat(10, minmax(0, 1fr));
  gap: 8px;
}
.hint-navigation__items a {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 47px;
  padding: 8px 3px;
  border: 1px solid var(--hint-line);
  background: #fffdf8;
  color: var(--red);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
}
.hint-navigation__items a:hover,
.hint-navigation__items a:focus-visible {
  border-color: var(--red);
  background: #f7eae0;
}
.hint-navigation__items a.hint-navigation__final {
  color: var(--white);
  border-color: var(--red);
  background: var(--red);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .03em;
}
.hint-navigation__items a.hint-navigation__final:hover { background: var(--red-dark); }

.hint-list { display: grid; gap: 25px; }
.hint-card {
  display: grid;
  grid-template-columns: minmax(0, 205px) minmax(0, 1fr);
  border: 1px solid var(--hint-line);
  border-top: 2px solid var(--gold);
  background: var(--hint-card-bg);
  scroll-margin-top: calc(var(--header-h) + 15px);
}
.hint-card__heading {
  padding: 26px 20px;
  background: #f0e5d3;
  border-right: 1px solid var(--hint-line);
}
.hint-card__heading-top { display: flex; flex-wrap: wrap; gap: 7px 9px; align-items: center; }
.hint-card__number {
  color: var(--red);
  font: 700 19px/1.5 var(--serif);
  letter-spacing: .02em;
}
.hint-card__location {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.55;
}
.hint-card__title {
  margin-top: 13px;
  color: var(--ink);
  font-size: 23px;
  line-height: 1.55;
  letter-spacing: .035em;
  overflow-wrap: anywhere;
}
.hint-card__body { min-width: 0; padding: 25px 28px 22px; }
.hint-card__subheading {
  font-size: 17px;
  line-height: 1.6;
  color: var(--red);
  margin-bottom: 12px;
}

/* すべてnative details / summaryで実装。JavaScript不要。 */
.hint-disclosure {
  margin-top: 9px;
  background: #fffdf9;
  border: 1px solid var(--hint-line);
}
.hint-disclosure summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  padding: 12px 17px;
  min-height: 50px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.65;
  list-style: none;
}
.hint-disclosure summary::-webkit-details-marker { display: none; }
.hint-disclosure summary::after {
  content: "＋";
  display: block;
  flex: none;
  color: var(--gold-text);
  font-size: 20px;
  font-weight: 400;
}
.hint-disclosure[open] summary::after { content: "−"; }
.hint-disclosure summary:hover { background: #f8f0e4; }
.hint-disclosure__body {
  padding: 16px 18px 19px;
  border-top: 1px solid var(--hint-line);
  background: var(--hint-card-bg);
}
.hint-disclosure__body p {
  color: var(--ink);
  font-size: 15px;
  line-height: 1.95;
  margin: 0;
}
.hint-disclosure__body p + p { margin-top: 9px; }

.hint-material {
  border-top: 1px solid var(--hint-line);
  padding-top: 24px;
  margin-top: 25px;
}
.hint-material h3 {
  color: var(--red);
  font-size: 17px;
  line-height: 1.6;
  margin-bottom: 10px;
}
.hint-material__intro p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.9;
}
.hint-material__intro p + p { margin-top: 6px; }
.hint-disclosure--photo { margin-top: 14px; }
.hint-disclosure--photo summary { color: var(--red); }
.hint-photo-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 13px;
}
.hint-photo-grid > :only-child { grid-column: 1 / -1; }
.hint-photo-slot {
  display: flex;
  align-items: center;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
  min-height: 170px;
  padding: 20px 15px;
  background: #f2eadd;
  border: 1px dashed #bba780;
  text-align: center;
}
.hint-photo-slot__icon {
  display: inline-block;
  padding: 2px 11px;
  border: 1px solid #af9b75;
  color: var(--gold-text);
  font-size: 11px;
  letter-spacing: .1em;
}
.hint-photo-slot__label { color: var(--ink) !important; font-size: 13px !important; }
.hint-photo-slot__status { color: var(--muted) !important; font-size: 12px !important; }
.hint-photo-note { font-size: 12px !important; color: var(--muted) !important; margin-top: 14px !important; }
.hint-card__back {
  display: inline-block;
  font-size: 12px;
  color: var(--gold-text);
  text-decoration: none;
  margin-top: 22px;
  padding: 3px 0;
}
.hint-card__back:hover { text-decoration: underline; }

/* FINALを一段階ゲート化し、謎⑨の前にFINALのヒントを見ないよう配慮 */
.hints-final {
  margin-top: 56px;
  scroll-margin-top: calc(var(--header-h) + 12px);
}
.hints-final__intro {
  border-top: 2px solid var(--gold);
  background: #eee2ce;
  padding: 27px 29px 25px;
}
.hints-final__eyebrow {
  color: var(--gold-text);
  font: 12px/1.6 Georgia, serif;
  letter-spacing: .16em;
  margin-bottom: 7px;
}
.hints-final__intro h2 { color: var(--red); font-size: clamp(24px, 3.2vw, 32px); line-height: 1.6; margin-bottom: 12px; }
.hints-final__intro p { font-size: 14px; line-height: 1.9; }
.hints-final__intro p + p { margin-top: 3px; }
.final-gate { background: #fffaf1; border: 1px solid var(--hint-line); border-top: 0; }
.final-gate > summary {
  position: relative;
  list-style: none;
  background: var(--red);
  color: var(--white);
  padding: 17px 48px 17px 23px;
  min-height: 74px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  font-size: 16px;
  font-weight: 600;
}
.final-gate > summary::-webkit-details-marker { display: none; }
.final-gate > summary::after {
  position: absolute;
  right: 21px;
  top: 24px;
  content: "＋";
  font-size: 24px;
  line-height: 1;
  font-weight: 400;
  color: #ebd5a7;
}
.final-gate[open] > summary::after { content: "−"; }
.final-gate > summary:hover { background: var(--red-dark); }
.final-gate__sub { color: #f0ddcd; font-size: 12px; line-height: 1.6; font-weight: 400; }
.final-gate__content { display: grid; gap: 24px; padding: 23px; background: var(--paper); }

.hints-certificate {
  margin-top: 42px;
  border-top: 2px solid var(--gold);
  padding: 25px 28px;
  background: var(--hint-card-bg);
}
.hints-certificate__heading { display: flex; gap: 10px; align-items: center; margin-bottom: 12px; }
.hints-certificate__heading h2 { font-size: 22px; color: var(--red); }
.hints-certificate__icon { font-size: 24px; color: var(--gold); }
.hints-certificate p { font-size: 15px; line-height: 1.95; }
.hints-certificate p.hints-certificate__note { font-size: 13px; margin-top: 8px; color: var(--muted); }
.hints-bottom-nav { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; margin-top: 32px; }
.hints-bottom-nav a { color: var(--red); text-decoration: none; font-size: 14px; padding: 8px 0; }
.hints-bottom-nav a:hover { text-decoration: underline; }
.hints-footer { display: flex; align-items: flex-end; justify-content: space-between; flex-wrap: wrap; gap: 24px; }
.hints-footer > p { color: #cfbda9; font-size: 11px; }

/* 実画像が用意できたら、photo-slotをfigureに置換してください。 */
.hint-material-photo { margin: 0; }
.hint-material-photo img {
  display: block;
  width: 100%;
  max-height: 510px;
  object-fit: contain;
  background: var(--paper-deep);
  border: 1px solid var(--hint-line);
}
.hint-material-photo figcaption { margin-top: 8px; color: var(--muted); font-size: 12px; line-height: 1.6; }
.hint-material-photo a { display: block; }
.hint-material-photo a:focus-visible { outline-offset: 5px; }

@media (max-width: 900px) {
  .hint-navigation__items { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .hint-card { grid-template-columns: 170px minmax(0, 1fr); }
  .hint-card__heading { padding: 22px 17px; }
  .hint-card__body { padding: 22px 20px; }
  .hint-card__title { font-size: 21px; }
}
@media (max-width: 600px) {
  .hints-page .hints-header-return { font-size: 11px; padding: 8px; }
  .hints-page .logo { font-size: 16px; }
  .hints-hero { padding: 38px 0 55px; }
  .hints-hero__eyebrow { font-size: 10px; letter-spacing: .13em; }
  .hints-hero h1 { font-size: 31px; margin-bottom: 20px; }
  .hints-hero__lead p { font-size: 14px; line-height: 1.9; margin-top: 8px; }
  .hints-main { padding-bottom: 42px; }
  .hint-navigation { padding: 18px 14px 20px; margin: -23px 0 24px; }
  .hint-navigation h2 { font-size: 16px; margin-bottom: 13px; }
  .hint-navigation__items { gap: 7px; }
  .hint-navigation__items a { min-height: 46px; font-size: 13px; }
  .hint-navigation__items a.hint-navigation__final { font-size: 11px; }
  .hint-list { gap: 19px; }
  .hint-card { display: block; }
  .hint-card__heading { padding: 16px 18px 14px; border-right: 0; border-bottom: 1px solid var(--hint-line); }
  .hint-card__heading-top { gap: 9px; }
  .hint-card__number { font-size: 17px; }
  .hint-card__location { font-size: 11px; }
  .hint-card__title { margin-top: 6px; font-size: 22px; }
  .hint-card__body { padding: 17px 15px 19px; }
  .hint-card__subheading { font-size: 16px; margin-bottom: 10px; }
  .hint-disclosure summary { font-size: 14px; min-height: 50px; padding: 12px 13px; }
  .hint-disclosure__body { padding: 14px 14px 16px; }
  .hint-disclosure__body p { font-size: 14px; line-height: 1.9; }
  .hint-material { margin-top: 20px; padding-top: 20px; }
  .hint-material h3 { font-size: 16px; }
  .hint-material__intro p { font-size: 13px; }
  .hint-photo-grid { grid-template-columns: 1fr; gap: 10px; }
  .hint-photo-slot { min-height: 130px; }
  .hints-final { margin-top: 40px; }
  .hints-final__intro { padding: 22px 18px; }
  .hints-final__intro h2 { font-size: 23px; }
  .hints-final__intro p { font-size: 13px; }
  .final-gate__content { padding: 13px; gap: 18px; }
  .hints-certificate { margin-top: 29px; padding: 21px 18px; }
  .hints-certificate__heading h2 { font-size: 19px; }
  .hints-certificate p { font-size: 14px; }
  .hints-certificate p.hints-certificate__note { font-size: 12px; }
  .hints-bottom-nav { gap: 8px 18px; }
  .hints-bottom-nav a { font-size: 13px; }
  .hints-footer { display: block; }
  .hints-footer > p { margin-top: 22px; }
}
@media (max-width: 370px) {
  .hints-page .logo { font-size: 14px; }
  .hints-header-return span { display:none; }
  .hint-navigation__items { gap: 5px; }
  .hint-navigation__items a { font-size: 12px; min-height: 44px; }
}