:root {
  color-scheme: light;
  --eva-blue: #2256a3;
  --eva-blue-dark: #183e78;
  --eva-purple: #6a438f;
  --eva-green: #4b7b2b;
  --eva-ink: #22252a;
  --eva-muted: #60656f;
  --eva-line: #d9dce2;
  --eva-soft: #f4f5f7;
  --eva-panel: #fff;
  --eva-link: #1656a3;
  --eva-warning: #fff7db;
  --eva-max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: #eef0f3;
  color: var(--eva-ink);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  font-size: 15px;
  line-height: 1.85;
}
a { color: var(--eva-link); text-decoration: none; }
a:hover { text-decoration: underline; }
img { display: block; max-width: 100%; }
button, input { font: inherit; }

.eva-site-header {
  background: var(--eva-blue-dark);
  color: #fff;
  border-bottom: 4px solid #7faa43;
}
.eva-header-inner {
  width: min(var(--eva-max), calc(100% - 32px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto minmax(280px, 620px) auto;
  align-items: center;
  gap: 24px;
  min-height: 72px;
}
.eva-brand { color: #fff; font-weight: 800; letter-spacing: .03em; font-size: 19px; white-space: nowrap; }
.eva-brand:hover { text-decoration: none; }
.eva-search { display: flex; min-width: 0; }
.eva-search input {
  width: 100%;
  min-height: 40px;
  padding: 8px 12px;
  border: 1px solid #b8c3d1;
  border-right: 0;
  border-radius: 3px 0 0 3px;
  background: #fff;
  color: #20242a;
}
.eva-search button {
  min-width: 72px;
  border: 1px solid #b8c3d1;
  border-radius: 0 3px 3px 0;
  background: #f6f7f9;
  color: #1d3f70;
  font-weight: 700;
  cursor: pointer;
}
.eva-header-nav { display: flex; gap: 14px; font-size: 13px; }
.eva-header-nav a { color: #fff; }

.eva-shell { width: min(var(--eva-max), calc(100% - 32px)); margin: 0 auto; }
.eva-breadcrumbs { padding: 12px 0 8px; color: var(--eva-muted); font-size: 12px; }
.eva-breadcrumbs ol { display: flex; flex-wrap: wrap; gap: 6px; padding: 0; margin: 0; list-style: none; }
.eva-breadcrumbs li + li::before { content: ">"; margin-right: 6px; color: #8b9098; }

.eva-article-grid { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 18px; align-items: start; }
.eva-panel { background: var(--eva-panel); border: 1px solid var(--eva-line); }
.eva-article { min-width: 0; }
.eva-article-head { padding: 26px 30px 22px; border-bottom: 1px solid var(--eva-line); }
.eva-kicker { margin: 0 0 4px; color: var(--eva-purple); font-size: 12px; font-weight: 800; letter-spacing: .08em; }
.eva-article h1 { margin: 0; font-size: clamp(28px, 4vw, 40px); line-height: 1.3; letter-spacing: -.02em; }
.eva-subtitle { margin: 5px 0 0; color: var(--eva-muted); font-size: 13px; }
.eva-lead { margin: 18px 0 0; font-size: 17px; line-height: 1.95; }
.eva-spoiler-note { margin: 16px 0 0; padding: 9px 12px; background: var(--eva-warning); border-left: 4px solid #c99219; font-size: 13px; }

.eva-hero-figure { margin: 0; background: #13151a; }
.eva-hero-figure img { width: 100%; max-height: 600px; object-fit: contain; }
.eva-hero-figure figcaption, .eva-gallery figcaption { padding: 8px 10px; background: #f5f6f8; color: #545962; font-size: 12px; line-height: 1.6; border-top: 1px solid var(--eva-line); }
.eva-gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; padding: 18px 30px 4px; }
.eva-gallery figure { margin: 0; border: 1px solid var(--eva-line); background: #f7f7f8; }
.eva-gallery img { width: 100%; height: 220px; object-fit: contain; background: #17191e; }

.eva-toc { margin: 20px 30px 4px; padding: 16px 18px; border: 1px solid var(--eva-line); background: #f8f9fa; }
.eva-toc h2 { margin: 0 0 8px; font-size: 16px; }
.eva-toc ol { columns: 2; margin: 0; padding-left: 22px; }
.eva-toc li { break-inside: avoid; margin: 2px 0; font-size: 13px; }

.eva-content { padding: 4px 30px 36px; }
.eva-section { padding-top: 26px; }
.eva-section h2 { margin: 0 0 14px; padding: 0 0 8px; border-bottom: 2px solid var(--eva-blue); font-size: 24px; line-height: 1.45; }
.eva-section h3 { margin: 24px 0 8px; font-size: 18px; }
.eva-section p { margin: 0 0 15px; }
.eva-section ul, .eva-section ol { margin: 0 0 18px; padding-left: 1.5em; }
.eva-section li { margin-bottom: 7px; }
.eva-key-points { margin: 0 0 18px; padding: 14px 16px 10px; border-left: 4px solid var(--eva-green); background: #f3f8ef; }
.eva-key-points strong { display: block; margin-bottom: 5px; }
.eva-data-table { width: 100%; border-collapse: collapse; margin: 0 0 18px; font-size: 14px; }
.eva-data-table th, .eva-data-table td { border: 1px solid var(--eva-line); padding: 9px 11px; vertical-align: top; text-align: left; }
.eva-data-table th { width: 28%; background: #f2f4f7; font-weight: 700; }
.eva-spoiler { margin: 0 0 18px; border: 1px solid #d8c07b; background: #fffdf5; }
.eva-spoiler summary { cursor: pointer; padding: 10px 13px; font-weight: 700; }
.eva-spoiler-inner { padding: 2px 13px 12px; }

.eva-sidebar { display: grid; gap: 14px; }
.eva-infobox h2, .eva-side-card h2 { margin: 0; padding: 10px 12px; background: #edf2f8; border-bottom: 1px solid var(--eva-line); color: #243955; font-size: 15px; }
.eva-infobox dl { margin: 0; }
.eva-infobox dt { padding: 8px 12px 2px; color: var(--eva-muted); font-size: 11px; font-weight: 700; }
.eva-infobox dd { margin: 0; padding: 0 12px 8px; border-bottom: 1px solid #eceef1; font-size: 13px; line-height: 1.65; }
.eva-side-card ul { margin: 0; padding: 10px 12px 10px 30px; }
.eva-side-card li { margin: 4px 0; font-size: 13px; }
.eva-continuity { display: flex; flex-wrap: wrap; gap: 5px; padding: 10px 12px; }
.eva-badge { display: inline-block; padding: 3px 7px; border: 1px solid #b7c4d5; background: #f5f8fb; color: #284f82; font-size: 11px; line-height: 1.4; }

.eva-related, .eva-official-links { margin-top: 24px; padding: 18px; border: 1px solid var(--eva-line); background: #fafbfc; }
.eva-related h2, .eva-official-links h2 { margin: 0 0 10px; font-size: 18px; }
.eva-related ul, .eva-official-links ul { margin: 0; padding-left: 20px; }

.eva-home { padding-bottom: 40px; }
.eva-home-hero { margin-top: 8px; padding: 34px; background: #fff; border: 1px solid var(--eva-line); }
.eva-home-hero h1 { margin: 0; font-size: clamp(30px, 5vw, 48px); line-height: 1.25; }
.eva-home-hero p { max-width: 760px; margin: 12px 0 0; color: #474d56; font-size: 16px; }
.eva-home-search { max-width: 760px; margin-top: 22px; }
.eva-home-section { margin-top: 18px; padding: 22px; background: #fff; border: 1px solid var(--eva-line); }
.eva-home-section h2 { margin: 0 0 14px; font-size: 22px; }
.eva-card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.eva-card { display: block; min-width: 0; padding: 14px; border: 1px solid var(--eva-line); background: #fff; color: var(--eva-ink); }
.eva-card:hover { border-color: #8ea8c8; text-decoration: none; }
.eva-card strong { display: block; color: var(--eva-link); font-size: 16px; }
.eva-card span { display: block; margin-top: 4px; color: var(--eva-muted); font-size: 12px; line-height: 1.65; }
.eva-search-results { margin-top: 12px; }
.eva-search-results[hidden] { display: none; }

.eva-site-footer { margin-top: 30px; border-top: 1px solid #cdd1d7; background: #fff; color: var(--eva-muted); }
.eva-footer-inner { width: min(var(--eva-max), calc(100% - 32px)); margin: 0 auto; padding: 22px 0 30px; font-size: 12px; }

@media (max-width: 900px) {
  .eva-header-inner { grid-template-columns: 1fr; gap: 10px; padding: 14px 0; }
  .eva-header-nav { display: none; }
  .eva-article-grid { grid-template-columns: 1fr; }
  .eva-sidebar { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .eva-card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 620px) {
  body { font-size: 14px; line-height: 1.8; }
  .eva-shell, .eva-header-inner, .eva-footer-inner { width: min(100% - 20px, var(--eva-max)); }
  .eva-article-head, .eva-content { padding-left: 17px; padding-right: 17px; }
  .eva-gallery { grid-template-columns: 1fr; padding-left: 17px; padding-right: 17px; }
  .eva-gallery img { height: 240px; }
  .eva-toc { margin-left: 17px; margin-right: 17px; }
  .eva-toc ol { columns: 1; }
  .eva-sidebar { grid-template-columns: 1fr; }
  .eva-card-grid { grid-template-columns: 1fr; }
  .eva-home-hero, .eva-home-section { padding: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}