/* ============================================================
   SPEED-AD Support / News (B案 Compact Newspaper)
   - 適用範囲: body[data-page-id="news"] / body[data-page-id="news-detail"]
   - support-shell.css の管理領域 (.support-header / .support-footer /
     .support-shell / .support-main) には触らない
   ============================================================ */

:root {
  --brand: #2563EB;
  --brand-ink: #1D4ED8;
  --brand-soft: #EEF3FB;
  --brand-softer: #F6F9FE;
  --ink: #111827;
  --ink-2: #374151;
  --muted: #6B7280;
  --muted-2: #9CA3AF;
  --line: #E5E7EB;
  --line-2: #F1F3F6;
  --bg: #FFFFFF;
  --tag-bg: #EEF3FB;
  --tag-ink: #1D4ED8;
  --pick-bg: #111827;
  --shadow-sm: 0 1px 2px rgba(17, 24, 39, 0.04);
  --shadow-md: 0 4px 16px rgba(17, 24, 39, 0.06);
  --radius: 10px;
}

/* ===== Breadcrumb ================================================ */
.hc-tint {
  background: var(--brand-softer);
  border-bottom: 1px solid var(--line-2);
}
.breadcrumb {
  max-width: 1080px;
  margin: 0 auto;
  padding: 14px 32px;
  font-size: 12.5px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}
.breadcrumb li { display: inline; }
.breadcrumb a { color: var(--muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--brand); }
.breadcrumb .sep { color: var(--muted-2); }
.breadcrumb .current { color: var(--ink-2); font-weight: 500; }

/* ===== Tag (汎用) ================================================ */
.tag {
  display: inline-flex;
  align-items: center;
  font-size: 11px;
  font-weight: 500;
  padding: 3px 8px;
  border-radius: 4px;
  background: var(--tag-bg);
  color: var(--tag-ink);
  letter-spacing: 0.04em;
  line-height: 1.4;
}

/* ===== List: Hero ================================================ */
.b-hero {
  max-width: 1080px;
  margin: 0 auto;
  padding: 56px 32px 28px;
  border-bottom: 1px solid var(--ink);
}
.b-hero__eyebrow {
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--brand);
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.b-hero__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 32px;
}
.b-hero__title {
  font-size: 40px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--ink);
}
.b-hero__count {
  font-size: 13px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.b-hero__count strong {
  color: var(--ink);
  font-weight: 600;
}

/* ===== List: Toolbar (filter chips) ============================== */
.b-toolbar {
  max-width: 1080px;
  margin: 0 auto;
  padding: 18px 32px;
  display: flex;
  gap: 8px;
  align-items: center;
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
}
.b-chip {
  font-size: 12px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink-2);
  cursor: pointer;
  white-space: nowrap;
  transition: border-color .15s ease, color .15s ease, background .15s ease;
}
.b-chip.is-active {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}
.b-chip:not(.is-active):hover {
  border-color: var(--brand);
  color: var(--brand-ink);
}

/* ===== List: Rows ================================================ */
.b-list {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 32px 80px;
}
.b-row {
  display: grid;
  grid-template-columns: 120px 110px 1fr 32px;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: inherit;
  align-items: baseline;
  transition: background .15s ease;
}
.b-row:hover { background: var(--brand-softer); }
.b-row__date {
  font-size: 13.5px;
  color: var(--ink-2);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}
.b-row__date .dow {
  color: var(--muted-2);
  font-size: 11px;
  margin-left: 6px;
  letter-spacing: 0.1em;
}
.b-row__tags { padding: 0; }
.b-row__body { min-width: 0; }
.b-row__title {
  font-size: 15px;
  font-weight: 600;
  margin: 0 0 4px;
  color: var(--ink);
  line-height: 1.55;
  transition: color .15s ease;
}
.b-row__summary {
  font-size: 12.5px;
  color: var(--muted);
  margin: 0;
  line-height: 1.65;
}
.b-row__arrow {
  color: var(--muted-2);
  text-align: right;
  transition: color .15s ease, transform .15s ease;
}
.b-row:hover .b-row__title { color: var(--brand-ink); }
.b-row:hover .b-row__arrow {
  color: var(--brand);
  transform: translateX(3px);
}

/* ===== List: Year rule =========================================== */
.b-year-rule {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 32px 0 14px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--muted-2);
  text-transform: uppercase;
}
.b-year-rule::before,
.b-year-rule::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}

/* ===== State ===================================================== */
.news-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--muted);
  font-size: 14px;
}

/* ===== Article: Hero ============================================= */
.article-hero {
  max-width: 1080px;
  margin: 0 auto;
  padding: 56px 32px 36px;
}
.ah-eyebrow {
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--brand);
  font-weight: 600;
  text-transform: uppercase;
  margin: 0 0 18px;
  padding: 0;
}
.ah-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  font-size: 12.5px;
  color: var(--muted);
  flex-wrap: wrap;
  padding: 0;
}
.ah-meta time {
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
  color: var(--ink-2);
}
.ah-meta .dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--muted-2);
  display: inline-block;
}
.ah-meta .read { color: inherit; }
.article-hero h1 {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.45;
  margin: 0 0 20px;
  letter-spacing: -0.005em;
  color: var(--ink);
}
.ah-rule {
  height: 1px;
  background: var(--line);
  margin-top: 4px;
}

/* ===== Article: Grid ============================================= */
.article-grid {
  max-width: 1080px;
  margin: 0 auto;
  padding: 48px 32px 80px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 240px;
  gap: 64px;
  align-items: start;
}
.article-main {
  min-width: 0;
  max-width: 720px;
}

/* ===== Article: Lede ============================================= */
.article-lede {
  font-size: 17px;
  font-weight: 500;
  line-height: 2;
  color: var(--ink-2);
  margin: 0 0 32px;
}

/* ===== Article: Body ============================================= */
.article-body {
  font-size: 15px;
  color: var(--ink-2);
  line-height: 1.95;
}
.article-body h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
  margin: 48px 0 16px;
  padding-left: 14px;
  border-left: 3px solid var(--brand);
  line-height: 1.5;
  scroll-margin-top: 32px;
}
.article-body h2:first-child { margin-top: 0; }
.article-body h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  margin: 32px 0 12px;
}
.article-body p { margin: 0 0 16px; }
.article-body ul,
.article-body ol {
  margin: 0 0 20px;
  padding-left: 0;
  list-style: none;
}
.article-body li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 6px;
}
.article-body ul > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 5px;
  height: 5px;
  background: var(--brand);
  border-radius: 1px;
}
.article-body ol { counter-reset: olc; }
.article-body ol > li { counter-increment: olc; }
.article-body ol > li::before {
  content: counter(olc) ".";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--brand);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.article-body figure {
  margin: 28px 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
}
.article-body blockquote {
  margin: 24px 0;
  padding: 14px 18px;
  background: var(--brand-softer);
  border-left: 3px solid #C7D6EE;
  color: var(--ink-2);
  font-size: 14px;
}
.article-body code {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 13px;
  background: #F1F3F6;
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--brand-ink);
}

/* ===== Article: Aside ============================================ */
.article-aside {
  position: sticky;
  top: 24px;
  align-self: start;
}
.aside-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 18px;
  margin-bottom: 20px;
  background: #fff;
}
.aside-eyebrow {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
  margin: 0 0 4px;
}
.aside-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-2);
  margin: 0 0 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-2);
}

/* TOC */
.toc { list-style: none; margin: 0; padding: 0; }
.toc li { margin-bottom: 6px; }
.toc a {
  display: block;
  font-size: 13px;
  color: var(--muted);
  padding: 5px 8px;
  border-left: 2px solid transparent;
  margin-left: -8px;
  border-radius: 0 4px 4px 0;
  line-height: 1.55;
  transition: color .15s ease, border-color .15s ease, background .15s ease;
  text-decoration: none;
}
.toc a:hover { color: var(--ink); background: var(--brand-softer); }
.toc a.on {
  color: var(--brand-ink);
  border-left-color: var(--brand);
  background: var(--brand-softer);
  font-weight: 500;
}

/* Related */
.related { list-style: none; margin: 0; padding: 0; }
.related li,
.related .related-item {
  margin-bottom: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-2);
}
.related li:last-child,
.related .related-item:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}
.related a {
  display: block;
  color: inherit;
  text-decoration: none;
}
.related .r-date {
  font-size: 11px;
  color: var(--muted-2);
  font-variant-numeric: tabular-nums;
}
.related .r-title {
  font-size: 13px;
  color: var(--ink-2);
  margin-top: 3px;
  line-height: 1.5;
}
.related a:hover .r-title { color: var(--brand-ink); }

/* ===== Article: Foot ============================================= */
.article-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--ink-2);
  font-weight: 500;
  text-decoration: none;
}
.back-link::before {
  content: "\2190";
  margin-right: 4px;
}
.back-link:hover { color: var(--brand-ink); }

.share {
  display: flex;
  gap: 8px;
  align-items: center;
}
.share-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink-2);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color .15s ease, color .15s ease, background .15s ease;
  padding: 0;
}
.share-btn:hover {
  border-color: var(--brand);
  color: var(--brand);
  background: var(--brand-softer);
}
.share-btn svg {
  width: 15px;
  height: 15px;
  display: block;
}

/* ===== Toast ===================================================== */
.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--pick-bg);
  color: #fff;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 13px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
  z-index: 50;
}
.toast.show,
.toast.on {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ===== Responsive ================================================ */
@media (max-width: 900px) {
  .b-hero__row {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }
  .b-hero__title { font-size: 32px; }
  .b-row {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 18px 0;
  }
  .b-row__arrow { display: none; }
  .article-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .article-aside { position: static; }
  .article-hero h1 { font-size: 26px; }
}