:root {
  --color-main: #5A3838;
  --color-main-dark: #3f2929;
  --color-accent: #C9923F;
  --color-accent-light: #e7c27a;
  --color-bg: #FCFAF6;
  --color-surface: #ffffff;
  --color-bg-soft: #faf6ef;
  --color-bg-section: #F2EBDD;
  --color-bg-cta: #C9923F;
  --color-border: #e6d8c6;
  --color-border-strong: #d1b78f;
  --color-text: #2C2017;
  --color-text-muted: #8B7F70;
  --color-text-body: #6B5D4F;
  --color-text-light: #ffffff;
  --color-alert: #8B3A2E; /* コラム本文の緊急受診警告文専用（1記事0〜1箇所・docs/design-rules.md §4参照） */

  /* コラムカテゴリ色（落ち着いた混色、site/news/index.htmlの --cat-* と同じ設計） */
  --cat-health-fg:#A5652E;     --cat-health-bg:#F6EAE0;     --cat-health-bd:#E4CBAC;
  --cat-prevention-fg:#5F7D5E; --cat-prevention-bg:#E8EFE6; --cat-prevention-bd:#CBDBC7;
  --cat-season-fg:#4F7488;     --cat-season-bg:#E6EEF1;     --cat-season-bd:#C5D9DF;
  --cat-visit-fg:#93688A;      --cat-visit-bg:#F1E8EF;      --cat-visit-bd:#DBC4D3;
  --cat-clinic-fg:#82705A;     --cat-clinic-bg:#EEE9DE;     --cat-clinic-bd:#D6C7AC;

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --container-max: 1160px;
  --container-pc: 28px;
  --container-sp: 20px;
  --section-y-pc: 88px;
  --section-y-sp: 56px;
  --gap-sm: 16px;
  --gap-md: 24px;
  --gap-lg: 40px;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 17px;
  font-weight: 400;
  line-height: 1.8;
}

@media (max-width: 767px) {
  body { font-size: 16px; }
}

.header-logo img {
  width: clamp(180px, 12vw, 210px);
  height: auto;
}

/* =====================
   一覧（column/index.html）
===================== */
.column-head {
  text-align: center;
  margin-bottom: var(--gap-lg);
}

.column-head__lead {
  max-width: 40em;
  margin: var(--gap-sm) auto 0;
  color: var(--color-text-body);
  font-size: 17px;
  line-height: 1.85;
}
@media (max-width: 767px) {
  .column-head__lead {
    font-size: 16px;
  }
}

.column-category-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 28px;
}

.column-cat-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 6px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-main);
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}

.column-cat-btn:hover {
  border-color: var(--color-border-strong);
}

.column-cat-btn.is-active {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* 各カテゴリボタンは非選択時もそのカテゴリ色（枠線＋文字）で表示。選択中は背景も塗って強調する */
.column-cat-btn[data-filter="health"]     { color: var(--cat-health-fg);     border-color: var(--cat-health-bd); }
.column-cat-btn[data-filter="prevention"] { color: var(--cat-prevention-fg); border-color: var(--cat-prevention-bd); }
.column-cat-btn[data-filter="season"]     { color: var(--cat-season-fg);     border-color: var(--cat-season-bd); }
.column-cat-btn[data-filter="visit"]      { color: var(--cat-visit-fg);      border-color: var(--cat-visit-bd); }
.column-cat-btn[data-filter="clinic"]     { color: var(--cat-clinic-fg);     border-color: var(--cat-clinic-bd); }

.column-cat-btn.is-active[data-filter="health"]     { color: var(--cat-health-fg);     border-color: var(--cat-health-bd);     background: var(--cat-health-bg); }
.column-cat-btn.is-active[data-filter="prevention"] { color: var(--cat-prevention-fg); border-color: var(--cat-prevention-bd); background: var(--cat-prevention-bg); }
.column-cat-btn.is-active[data-filter="season"]     { color: var(--cat-season-fg);     border-color: var(--cat-season-bd);     background: var(--cat-season-bg); }
.column-cat-btn.is-active[data-filter="visit"]      { color: var(--cat-visit-fg);      border-color: var(--cat-visit-bd);      background: var(--cat-visit-bg); }
.column-cat-btn.is-active[data-filter="clinic"]     { color: var(--cat-clinic-fg);     border-color: var(--cat-clinic-bd);     background: var(--cat-clinic-bg); }

.column-list {
  display: flex;
  flex-direction: column;
  gap: var(--gap-md);
  max-width: 850px;
  margin-inline: auto;
  list-style: none;
  padding: 0;
}

.column-card-wrap[hidden] {
  display: none;
}

.column-card {
  display: flex;
  align-items: flex-start;
  gap: var(--gap-md);
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: 0 8px 24px rgba(90, 56, 56, 0.05);
  color: inherit;
  text-decoration: none;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.column-card:hover,
.column-card:focus-visible {
  border-color: var(--color-accent-light);
  box-shadow: 0 14px 32px rgba(90, 56, 56, 0.1);
  transform: translateY(-2px);
}

.column-card__thumb {
  flex: 0 0 240px;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border-radius: var(--radius-sm);
}

.column-card__thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.column-card__body {
  flex: 1;
  min-width: 0;
}

.column-card__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.column-card__date {
  font-family: 'Lora', serif;
  font-size: 13px;
  color: var(--color-text-muted);
}

.column-card__cat {
  padding: 3px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-soft);
  color: var(--color-main);
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.column-card__title {
  color: var(--color-main);
  font-size: 18px;
  line-height: 1.6;
  margin-bottom: 10px;
}

.column-card__excerpt {
  color: var(--color-text-body);
  font-size: 14px;
  line-height: 1.85;
}

.column-card__more {
  display: inline-block;
  margin-top: 16px;
  color: var(--color-accent);
  font-size: 13px;
  font-weight: 600;
}

.column-empty {
  padding: 40px 0;
  text-align: center;
  color: var(--color-text-body);
  font-size: 15px;
}

/* =====================
   記事（column/{slug}.html）
===================== */
.column-article {
  max-width: 850px;
  margin-inline: auto;
}

.column-article__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: var(--gap-md);
  padding-bottom: var(--gap-md);
  border-bottom: 1px solid var(--color-border);
}

.column-article__date {
  font-family: 'Lora', serif;
  font-size: 13px;
  color: var(--color-text-muted);
}

.column-article__cat {
  padding: 3px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-soft);
  color: var(--color-main);
  font-size: 12px;
  font-weight: 600;
}

.column-card__cat--health,     .column-article__cat--health     { color: var(--cat-health-fg);     background: var(--cat-health-bg);     border-color: var(--cat-health-bd); }
.column-card__cat--prevention, .column-article__cat--prevention { color: var(--cat-prevention-fg); background: var(--cat-prevention-bg); border-color: var(--cat-prevention-bd); }
.column-card__cat--season,     .column-article__cat--season     { color: var(--cat-season-fg);     background: var(--cat-season-bg);     border-color: var(--cat-season-bd); }
.column-card__cat--visit,      .column-article__cat--visit      { color: var(--cat-visit-fg);      background: var(--cat-visit-bg);      border-color: var(--cat-visit-bd); }
.column-card__cat--clinic,     .column-article__cat--clinic     { color: var(--cat-clinic-fg);     background: var(--cat-clinic-bg);     border-color: var(--cat-clinic-bd); }

.column-article__body {
  max-width: 50em;
  margin-inline: auto;
  font-size: 17px;
  line-height: 1.8;
}

@media (max-width: 767px) {
  .column-article__body { font-size: 16px; }
}

.column-article__body h2 {
  margin-top: 48px;
  margin-bottom: 8px;
  color: var(--color-main);
}

.column-article__body h2:first-child {
  margin-top: 0;
}

.column-article__body .sec-line {
  margin-top: 0;
  margin-bottom: 20px;
}

.column-article__body h3 {
  margin-top: 30px;
  margin-bottom: 8px;
  color: var(--color-main);
}

.column-article__body p {
  margin-top: 14px;
}

.column-article__lead {
  color: var(--color-text-body);
  font-size: 18px;
  line-height: 1.9;
}

@media (max-width: 767px) {
  .column-article__lead { font-size: 16px; }
}

.column-article__body ul,
.column-article__body ol {
  margin-top: 14px;
}

.column-article__body ol {
  padding-left: 1.4em;
}

.column-article__body li + li {
  margin-top: 8px;
}

.column-article__body ul {
  list-style: none;
  padding-left: 0;
}

.column-article__body ul li {
  position: relative;
  padding-left: 1.3em;
}

.column-article__body ul li::before {
  content: '';
  position: absolute;
  left: 0.15em;
  top: 0.72em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-accent);
}

.column-article__body ol.column-article__steps {
  counter-reset: column-step;
  list-style: none;
  padding-left: 0;
}

.column-article__steps li {
  position: relative;
  padding-left: 2.4em;
}

.column-article__steps li::before {
  counter-increment: column-step;
  content: counter(column-step);
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 1.7em;
  height: 1.7em;
  border: 1px solid var(--color-accent);
  border-radius: 50%;
  color: var(--color-main);
  font-family: 'Lora', serif;
  font-size: 14px;
  background: var(--color-surface);
}

.column-article__body a {
  color: var(--color-main);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 2px;
  text-decoration-color: var(--color-accent);
  transition: color 0.2s, text-decoration-color 0.2s;
}

.column-article__body a:hover {
  color: var(--color-accent);
  text-decoration-color: var(--color-accent);
}

/* 本文中のキーワード強調（色は付けない） */
.column-article__body strong {
  font-weight: 700;
}

/* 緊急受診を促す警告文（1記事0〜1箇所・本文段落内のみ・.column-note内では使わない） */
.column-article__body .column-article__alert {
  color: var(--color-alert);
}

.column-article__figure {
  margin: 28px 0;
}

.column-article__figure img {
  display: block;
  width: 90%;
  height: auto;
  margin-inline: auto;
  border-radius: var(--radius-md);
}

.column-article__figure figcaption {
  margin-top: 8px;
  color: var(--color-text-muted);
  font-size: 13px;
  text-align: center;
}

.column-note {
  margin-top: 28px;
  padding: 20px 22px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-soft);
}

.column-note p {
  margin-top: 0;
  color: var(--color-text-body);
  font-size: 15px;
  line-height: 1.85;
}

.column-note p + p {
  margin-top: 10px;
}

.column-related {
  margin-top: var(--section-y-sp);
  padding-top: var(--gap-lg);
  border-top: 1px solid var(--color-border);
}

.column-related h2 {
  color: var(--color-main);
  margin-bottom: var(--gap-sm);
}

.column-related ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.column-back {
  display: flex;
  justify-content: center;
  margin-top: var(--gap-md);
}

.column-back .button {
  display: inline;
  min-height: auto;
  padding: 0;
  border: none;
  background: none;
  color: var(--color-main);
  font-size: 15px;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 2px;
  text-decoration-color: var(--color-accent);
  transition: color 0.2s, text-decoration-color 0.2s;
}

.column-back .button:hover {
  color: var(--color-accent);
  background: none;
  text-decoration-color: var(--color-accent);
}

@media (min-width: 768px) and (max-width: 1023px) {
  .global-nav,
  .header-contact,
  .header-reserve-btn {
    display: none;
  }

  .header-logo img {
    width: 170px;
  }
}

@media (max-width: 767px) {
  .global-nav,
  .header-contact,
  .header-reserve-btn {
    display: none;
  }

  .header-logo img {
    width: 160px;
  }

  .column-list {
    gap: var(--gap-sm);
  }

  .column-card {
    flex-direction: column;
    gap: 14px;
    padding: 16px 16px 18px;
  }

  .column-card__thumb {
    flex-basis: auto;
    width: 100%;
    aspect-ratio: 3 / 2;
  }

  .column-category-nav {
    gap: 8px;
    margin-bottom: 22px;
  }

  .column-cat-btn {
    min-height: 36px;
    padding-inline: 13px;
    font-size: 12px;
  }

  .column-article__meta {
    margin-bottom: var(--gap-sm);
    padding-bottom: var(--gap-sm);
  }

  .column-related {
    padding-top: var(--gap-md);
  }

  .column-related ul {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .column-related li,
  .column-related .button {
    width: 100%;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .column-card__thumb {
    flex-basis: 200px;
  }
}