:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-soft: #eef6f8;
  --text: #182235;
  --muted: #5b677a;
  --border: #dbe4ef;
  --accent: #155e75;
  --accent-2: #1d4ed8;
  --risk: #92400e;
  --risk-bg: #fff7ed;
  --ok: #166534;
  --ok-bg: #ecfdf3;
  --shadow: 0 12px 30px rgba(24, 34, 53, 0.07);
  --header-offset: 88px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-offset);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  line-height: 1.65;
}

a {
  color: var(--accent-2);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: min(1180px, calc(100vw - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
}

.header-inner {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  color: var(--text);
  font-weight: 700;
  line-height: 1.25;
}

.brand span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.nav-toggle span {
  display: block;
  height: 2px;
  width: 18px;
  margin: 5px auto;
  background: var(--text);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--muted);
  border-radius: 8px;
  padding: 7px 10px;
  font-size: 14px;
}

.site-nav a.active,
.site-nav a:hover {
  color: var(--accent);
  background: var(--surface-soft);
  text-decoration: none;
}

main {
  padding: 28px 0 48px;
}

[id] {
  scroll-margin-top: var(--header-offset);
}

.report-page {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.page-hero {
  margin: 0 0 18px;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: 16px;
  align-items: stretch;
}

.hero-copy,
.hero-map,
.panel,
.card,
.notice,
.toc,
.table-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.hero-copy {
  padding: 22px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
}

h1,
h2,
h3 {
  line-height: 1.32;
}

h1 {
  margin: 0;
  font-size: clamp(28px, 4vw, 42px);
}

h2 {
  margin: 0 0 12px;
  font-size: 24px;
}

h3 {
  margin: 0 0 8px;
  font-size: 17px;
}

.lead {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 16px;
}

.hero-map {
  padding: 18px;
  display: grid;
  gap: 10px;
  align-content: center;
}

.map-node {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fbfdff;
}

.map-node strong {
  font-size: 14px;
}

.map-node span {
  color: var(--muted);
  font-size: 12px;
}

.map-arrow {
  width: 2px;
  height: 18px;
  margin: -3px auto;
  background: var(--border);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.panel {
  margin: 16px 0;
  padding: 18px;
}

.card {
  padding: 16px;
}

.card p,
.panel p {
  color: var(--muted);
}

.card p:last-child,
.panel p:last-child {
  margin-bottom: 0;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 10px 0 0;
}

.tag,
.tag-link {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #f8fafc;
  color: var(--muted);
  padding: 2px 7px;
  font-size: 12px;
  font-weight: 600;
}

.tag-link {
  color: var(--accent-2);
}

.priority-p0 {
  border-color: #fecaca;
  background: #fff1f2;
  color: #9f1239;
}

.priority-p1 {
  border-color: #fed7aa;
  background: #fff7ed;
  color: #9a3412;
}

.priority-p2 {
  border-color: #bae6fd;
  background: #f0f9ff;
  color: #075985;
}

.notice {
  margin: 16px 0;
  padding: 14px 16px;
}

.notice.risk {
  border-color: #fed7aa;
  background: var(--risk-bg);
  color: var(--risk);
}

.notice.ok {
  border-color: #bbf7d0;
  background: var(--ok-bg);
  color: var(--ok);
}

.split {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.toc {
  position: sticky;
  top: 82px;
  padding: 14px;
}

.toc strong {
  display: block;
  margin-bottom: 8px;
}

.toc a {
  display: block;
  padding: 6px 8px;
  border-radius: 6px;
  color: var(--muted);
  font-size: 13px;
}

.toc a:hover {
  background: var(--surface-soft);
  color: var(--accent);
  text-decoration: none;
}

details.card {
  padding: 0;
  overflow: hidden;
}

summary {
  cursor: pointer;
  list-style: none;
  padding: 14px 16px;
}

summary::-webkit-details-marker {
  display: none;
}

details[open] summary {
  border-bottom: 1px solid var(--border);
}

.details-body {
  padding: 14px 16px 16px;
}

.table-wrap {
  overflow-x: auto;
  margin: 14px 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
  background: var(--surface);
}

th,
td {
  border-bottom: 1px solid var(--border);
  padding: 10px;
  text-align: left;
  vertical-align: top;
  font-size: 14px;
}

th {
  color: var(--text);
  background: #f8fafc;
  font-size: 13px;
}

.source-list {
  display: grid;
  gap: 10px;
}

.source-item {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  padding: 12px;
}

.source-meta {
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
}

.footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  padding: 18px 0 32px;
  font-size: 12px;
}

.report {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  min-width: 0;
  padding: clamp(22px, 4vw, 44px);
}

.report-toc {
  position: sticky;
  top: 84px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  min-width: 0;
  padding: 14px;
}

.report-toc strong {
  display: block;
  margin: 0 0 8px;
  color: var(--text);
  font-size: 14px;
}

.report-toc a {
  display: block;
  padding: 6px 8px;
  border-radius: 6px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.35;
}

.report-toc a.toc-child {
  margin-left: 10px;
  padding-left: 14px;
  font-size: 12px;
  color: #6f7b8d;
}

.report-toc a:hover {
  background: var(--surface-soft);
  color: var(--accent);
  text-decoration: none;
}

.report-header {
  padding-bottom: 18px;
  border-bottom: 2px solid var(--border);
  margin-bottom: 28px;
}

.report-lead {
  margin: 16px 0 0;
  color: #344155;
  font-size: 17px;
  line-height: 1.8;
}

.report-section {
  margin: 0 0 30px;
}

.report-section:last-child {
  margin-bottom: 0;
}

.report-section h2 {
  margin: 0 0 12px;
  padding-top: 2px;
  color: var(--text);
  font-size: 22px;
}

.report-section h3 {
  margin: 18px 0 6px;
  font-size: 17px;
}

.report-section p {
  margin: 0 0 12px;
  color: #344155;
  line-height: 1.8;
}

.report-section ul,
.report-section ol {
  margin: 0;
  padding-left: 1.35rem;
  color: #344155;
}

.report-section li {
  margin: 0 0 8px;
  line-height: 1.75;
}

.report-section li:last-child {
  margin-bottom: 0;
}

.report-section li ul,
.report-section li ol {
  margin-top: 6px;
  padding-left: 1.25rem;
}

.report-section li li {
  margin-bottom: 4px;
}

.report-list li {
  padding-left: 2px;
}

.report-outline {
  border-left: 3px solid var(--border);
  padding-left: 18px;
}

.recommendation-block {
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.recommendations-report .report-header + .recommendation-block {
  padding-top: 0;
  border-top: 0;
}

.direction-block {
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.references {
  margin-top: 36px;
  padding-top: 18px;
  border-top: 2px solid var(--border);
}

.references ol {
  padding-left: 1.2rem;
}

.references li {
  margin-bottom: 12px;
}

.references span {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.report-section a[href^="#ref-"] {
  margin-left: 2px;
  white-space: nowrap;
  font-weight: 700;
}

@media (max-width: 880px) {
  :root {
    --header-offset: 78px;
  }

  .header-inner {
    min-height: 58px;
  }

  .nav-toggle {
    display: inline-block;
  }

  .site-nav {
    display: none;
    position: absolute;
    left: 16px;
    right: 16px;
    top: 58px;
    padding: 8px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    box-shadow: var(--shadow);
  }

  .site-nav.open {
    display: grid;
  }

  .page-hero,
  .split,
  .report-page,
  .grid,
  .grid.two {
    grid-template-columns: 1fr;
  }

  .toc,
  .report-toc {
    position: static;
  }

  .report-toc {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    align-items: center;
  }

  .report-toc strong {
    width: 100%;
  }

  .report-toc a {
    display: inline-flex;
    border: 1px solid var(--border);
    background: #f8fafc;
  }

  .report {
    padding: 20px;
  }
}