/* ---------- reset ---------- */
:root {
/* --- color --- */
  --color-text: #111;
  --color-sub: #666;
  --color-meta: #999;
  --color-border: #ddd;
  --color-border-light: #eee;

/* --- font size --- */
  --fs-meta: 12px;
  --fs-small: 13px;
  --fs-base: 16px;
  --fs-title: 20px;
  --fs-article-title: 26px;

/* --- layout --- */
  --content-width: 960px;

/* --- spacing --- */
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 40px;
  --space-6: 48px;
  --space-8: 64px;
  --space-10: 80px;
  /* 以下は置き換えてから削除 */
  --space-xs: 6px;
  --space-sm: 12px;
  --space-md: 20px;
  --space-lg: 40px;
  --space-xl: 80px;
	
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-size: var(--fs-base);
  font-family: -apple-system, BlinkMacSystemFont, "Noto Sans JP", sans-serif;
  color: var(--color-text);
  line-height: 1.8;
  background: #fff;
}

/* ---------- header ---------- */
.site-header {
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: var(--space-3);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-name {
  font-size: var(--fs-small);
  letter-spacing: 0.08em;
}

.site-id {
  display: flex;
  align-items: center;
  gap: var(--space-1);

  text-decoration: none;
  color: inherit;
}

.site-id img {
  width: 24px;
  height: auto;
}

.global-nav a {
  margin-left: 24px;
  font-size: var(--fs-small);
  text-decoration: none;
  color: var(--color-text);
}

.global-nav a:hover {
  text-decoration: underline;
}

/* ===== column index ===== */

.page-title {
  max-width: var(--content-width);
  margin: 60px auto 48px;
  padding: 0 var(--space-24); 
  font-size: var(--fs-title);
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--color-text);
}

.column-group {
  max-width: var(--content-width);
  margin: 0 auto 64px;
  padding: 0 var(--space-24); 
}

.column-group h2 a {
  text-decoration: none;
  color: var(--color-text);
}

.column-group h2 a:hover {
  text-decoration: underline;
}

.column-group-title {
  font-size: var(--fs-base);
  font-weight: 400;
  letter-spacing: 0.08em;
  margin-bottom: 18px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--color-border);
}

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

.column-list li {
  margin-bottom: 16px;
}

.column-list time {
  display: block;
  font-size: var(--fs-meta);
  color: var(--color-meta);
  margin-bottom: 2px;
}

.column-list a {
  text-decoration: none;
  color: var(--color-text);
}

.column-list a:hover {
  text-decoration: underline;
}

.year-title {
  font-size: var(--fs-small);
  letter-spacing: 0.12em;
  margin: 40px 0 18px;
  color: var(--color-sub);
  border-bottom: 1px solid var(--color-border-light);
  padding-bottom: 6px;
}

.archive-link {
  margin-top: 60px;
  font-size: var(--fs-small);
  color: var(--color-sub);
}

.archive-link a {
  text-decoration: none;
  border-bottom: 1px solid var(--color-border);
}

.archive-link a:hover {
  border-bottom-color: var(--color-meta);
}

/* --- page common --- */
.page {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: var(--space-10) var(--space-3) var(--space-8);
}

.page-head {
  text-align: center;
  margin-bottom: 48px;
}

.page-subtitle {
  margin-top: 10px;
  font-size: var(--fs-small);
  color: var(--color-sub);
}

.page-section .lead {
  margin-bottom: 18px;
}

.list {
  margin: 0;
  padding-left: 1.2em;
}

.list li {
  margin: 10px 0;
}

.page-actions {
  margin-top: 32px;
}

.text-link {
  text-decoration: none;
  color: inherit;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 2px;
}

/* --- message layout --- */

.message {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-3);
  align-items: start;
}

.message-photo img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 6px;
}

.message-body p {
  margin-bottom: 16px;
}

.signature {
  margin-top: 22px;
  text-align: right;
  color: var(--color-sub);
}

@media (max-width: 720px) {
  .message {
    grid-template-columns: 1fr;
  }

  .message-photo {
    max-width: 240px;
    margin: 0 auto;
  }
}

/* --- staff --- */
.staff-list {
  display: grid;
  gap: 48px;
}

.staff-title {
  font-size: var(--fs-meta);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.staff-item {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: var(--space-3);
  align-items: start;
}

.staff-photo img {
  width: 100%;
  height: auto;
  border-radius: 6px;
  display: block;
}

.staff-name {
  font-size: var(--fs-base);
  font-weight: 500;
  margin-bottom: 4px;
}

.staff-role {
  font-size: var(--fs-small);
  color: var(--color-sub);
  margin-bottom: 12px;
}

.staff-text {
  line-height: 1.9;
}

@media (max-width: 720px) {
  .staff-item {
    grid-template-columns: 1fr;
  }
	
  .staff-photo {
    max-width: 200px;
    margin: 0 auto;
  }

  .staff-body {
    text-align: center;
  }
}

/* ---------- footer ---------- */
.site-footer {
  text-align: center;
  padding: 40px 0;
  font-size: var(--fs-meta);
  color: var(--color-sub);
}