:root {
  --ink: #0b3a53;
  --ink-soft: #244e63;
  --accent: #1f7a8c;
  --accent-bright: #7fd3e0;
  --amber: #f0b429;
  --bg: #f4f8fa;
  --bg-elev: #ffffff;
  --line: #d5e3e9;
  --muted: #5b7380;
  --danger: #b42318;
  --radius: 14px;
  --shadow: 0 18px 40px rgba(11, 58, 83, 0.08);
  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "IBM Plex Sans JP", "Hiragino Sans", "Noto Sans JP", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(127, 211, 224, 0.35), transparent 60%),
    radial-gradient(900px 400px at 100% 0%, rgba(240, 180, 41, 0.18), transparent 55%),
    linear-gradient(180deg, #eef5f7 0%, var(--bg) 35%, #e9f2f5 100%);
  min-height: 100vh;
  line-height: 1.7;
}

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--ink); }

.wrap { width: min(920px, calc(100% - 2rem)); margin-inline: auto; }
.narrow { width: min(720px, calc(100% - 2rem)); }
.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--ink); color: #fff; padding: .5rem 1rem; z-index: 10;
}
.skip-link:focus { left: 1rem; top: 1rem; }

.site-header {
  position: sticky; top: 0; z-index: 5;
  backdrop-filter: blur(10px);
  background: rgba(244, 248, 250, 0.85);
  border-bottom: 1px solid rgba(213, 227, 233, 0.8);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding: .9rem 0;
}
.brand {
  display: flex; align-items: center; gap: .75rem; text-decoration: none; color: inherit;
}
.brand-mark { border-radius: 10px; box-shadow: var(--shadow); }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name {
  font-family: var(--font-display);
  font-size: 1.35rem; font-weight: 700; letter-spacing: -0.02em;
}
.brand-tag { font-size: .75rem; color: var(--muted); }
.nav { display: flex; flex-wrap: wrap; gap: .9rem; font-size: .95rem; }
.nav a { color: var(--ink-soft); text-decoration: none; font-weight: 500; }
.nav a:hover { color: var(--accent); }

.hero {
  padding: 3rem 0 1.5rem;
  display: grid;
  gap: 1.25rem;
}
.hero-brand {
  display: flex; align-items: center; gap: 1rem;
}
.hero-brand img {
  width: 72px; height: 72px; border-radius: 18px; box-shadow: var(--shadow);
}
.hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
}
.hero .lede {
  margin: 0;
  font-size: 1.05rem;
  color: var(--ink-soft);
  max-width: 36rem;
}
.eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: .75rem;
  font-weight: 600;
  color: var(--accent);
}

.post-list { display: grid; gap: 1rem; padding: 1rem 0 3rem; }
.post-card {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-decoration: none;
  color: inherit;
  transition: transform .2s ease, border-color .2s ease;
}
.post-card:hover { transform: translateY(-2px); border-color: var(--accent-bright); }
.post-card img, .post-card .thumb-fallback {
  width: 140px; height: 100px; object-fit: cover; border-radius: 10px; background: #dce9ee;
}
.thumb-fallback {
  display: grid; place-items: center; color: var(--muted); font-size: .8rem;
}
.post-card h2 {
  margin: 0 0 .35rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  line-height: 1.35;
}
.meta-line { margin: 0; color: var(--muted); font-size: .85rem; }
.excerpt { margin: .4rem 0 0; color: var(--ink-soft); }

.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0 0 3rem;
  flex-wrap: wrap;
}
.page-nums {
  display: flex;
  align-items: center;
  gap: .35rem;
  flex-wrap: wrap;
  justify-content: center;
}
.page-num {
  min-width: 2.25rem;
  height: 2.25rem;
  display: inline-grid;
  place-items: center;
  padding: 0 .45rem;
  border-radius: 999px;
  text-decoration: none;
  color: var(--ink);
  border: 1px solid transparent;
  font-weight: 500;
}
a.page-num:hover { border-color: var(--line); background: var(--bg-elev); }
.page-num.is-current {
  background: var(--ink);
  color: #fff;
  font-weight: 600;
}
.page-ellipsis { color: var(--muted); padding: 0 .2rem; }
.btn.secondary.is-disabled {
  opacity: .4;
  pointer-events: none;
  cursor: default;
}

.article { padding: 2rem 0 3rem; }
.article h1 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.25;
  margin: .4rem 0 1rem;
}
.article-hero {
  width: 100%; max-height: 420px; object-fit: cover;
  border-radius: calc(var(--radius) + 4px);
  margin: 1rem 0 1.5rem;
  box-shadow: var(--shadow);
}
.article-body { font-size: 1.05rem; }
.article-body p { margin: 0 0 1rem; }
.sources {
  margin-top: 2rem;
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255,255,255,.7);
}
.sources h2 { margin: 0 0 .75rem; font-size: 1.1rem; }
.sources ul { margin: 0; padding-left: 1.1rem; }
.related { margin-top: 2.5rem; }
.related h2 { font-family: var(--font-display); }
.related ul { padding-left: 1.1rem; }

.ad-slot {
  margin: 1.25rem 0;
  min-height: 90px;
  display: grid;
  place-items: center;
}
.ad-slot--placeholder {
  border: 1px dashed var(--line);
  border-radius: 10px;
  color: var(--muted);
  background: rgba(255,255,255,.5);
  font-size: .85rem;
}

.btn, button.btn {
  display: inline-block;
  border: none;
  background: var(--ink);
  color: #fff;
  padding: .65rem 1.1rem;
  border-radius: 999px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}
.btn.secondary { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn.danger { background: var(--danger); }

.site-footer {
  border-top: 1px solid var(--line);
  padding: 2rem 0 3rem;
  background: rgba(255,255,255,.55);
}
.footer-inner { display: grid; gap: .75rem; }
.footer-brand { display: flex; align-items: center; gap: .5rem; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 1rem; }
.copy { color: var(--muted); font-size: .85rem; margin: 0; }

.admin-shell { min-height: 100vh; background: #f0f4f6; }
.admin-header {
  background: var(--ink); color: #fff; padding: 1rem 0;
}
.admin-header a { color: #fff; }
.admin-nav { display: flex; gap: 1rem; flex-wrap: wrap; }
.admin-card {
  background: #fff; border: 1px solid var(--line); border-radius: 12px;
  padding: 1rem; margin: 1rem 0; box-shadow: var(--shadow);
  overflow: hidden;
}
.admin-table { width: 100%; border-collapse: collapse; font-size: .92rem; table-layout: fixed; }
.admin-table th, .admin-table td {
  border-bottom: 1px solid var(--line); padding: .55rem .4rem; text-align: left; vertical-align: top;
  overflow-wrap: anywhere;
  word-break: break-word;
}
.admin-table th:first-child,
.admin-table td:first-child { width: 3.5rem; }
.admin-table .col-title { width: auto; }
.admin-filter {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
  align-items: center;
  margin: 1rem 0;
}
.admin-filter .admin-search {
  flex: 1 1 22rem;
  min-width: min(100%, 16rem);
  font: inherit;
  padding: .55rem .7rem;
  border: 1px solid var(--line);
  border-radius: 8px;
}
.admin-filter select {
  font: inherit;
  padding: .55rem .7rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  min-width: 9rem;
}
.admin-form label { display: grid; gap: .3rem; margin-bottom: .8rem; font-weight: 500; }
.admin-form input, .admin-form textarea, .admin-form select {
  font: inherit; padding: .55rem .7rem; border: 1px solid var(--line); border-radius: 8px;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}
.admin-form textarea { min-height: 160px; }
.admin-form--row {
  display: grid;
  gap: .75rem;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  align-items: end;
}
.admin-form--row label { margin-bottom: 0; }
.admin-form--row .admin-form-actions {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
  align-items: center;
}
.admin-source {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1rem;
  margin: 0 0 1rem;
  background: #fafbfc;
}
.admin-source__head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: flex-start;
  margin-bottom: .75rem;
}
.admin-source__meta {
  display: grid;
  gap: .35rem .75rem;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  margin: 0 0 1rem;
  font-size: .9rem;
}
.admin-source__meta dt { color: var(--muted); font-size: .75rem; margin: 0; }
.admin-source__meta dd { margin: 0; overflow-wrap: anywhere; word-break: break-word; }
.admin-pagination {
  margin-top: 1rem;
  padding-bottom: 0;
}
.flash { padding: .75rem 1rem; border-radius: 8px; background: #e6f6ea; color: #0f5132; }
.flash.error { background: #fde8e8; color: #7a1c1c; }
.badge {
  display: inline-block; padding: .15rem .5rem; border-radius: 999px;
  background: #e7f4f7; color: var(--accent); font-size: .75rem; font-weight: 600;
}
.badge.off { background: #eee; color: #666; }

@media (max-width: 720px) {
  .post-card { grid-template-columns: 1fr; }
  .post-card img, .post-card .thumb-fallback { width: 100%; height: 160px; }
  .header-inner { flex-direction: column; align-items: flex-start; }
}