:root {
  --color-primary: #10554F;
  --color-primary-dark: #0B3D38;
  --color-accent: #C4661F;
  --color-bg: #F4F2ED;
  --color-surface: #FFFFFF;
  --color-text: #1A2225;
  --color-muted: #5C6468;
  --color-line: #D8D4CA;
  --color-warn: #9A3B2E;
  --radius: 4px;
  --radius-lg: 6px;
  --shell-width: 1180px;
  --shell-pad: 32px;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  --shadow-soft: 0 1px 2px rgba(26, 34, 37, 0.04);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body.site-body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

h1,
h2,
h3,
h4 {
  margin: 0 0 0.6em;
  color: var(--color-text);
  line-height: 1.35;
  font-weight: 700;
}

h2 {
  font-size: 22px;
}

h3 {
  font-size: 17px;
}

p {
  margin: 0 0 1em;
}

ul,
ol {
  margin: 0 0 1em;
  padding-left: 1.25em;
}

li {
  margin-bottom: 0.35em;
}

figure {
  margin: 0;
}

figcaption {
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-muted);
  margin-top: 8px;
}

table {
  border-collapse: collapse;
  width: 100%;
}

caption {
  text-align: left;
  font-size: 13px;
  color: var(--color-muted);
  padding-bottom: 8px;
}

th,
td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-line);
  font-size: 14px;
  line-height: 1.7;
  vertical-align: top;
}

thead th {
  background: var(--color-bg);
  color: var(--color-text);
  font-weight: 700;
  border-bottom: 2px solid var(--color-accent);
}

tbody th {
  font-weight: 700;
  color: var(--color-primary);
  background: #FBFAF7;
}

tbody tr:hover {
  background: #F9F7F1;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-line);
  position: relative;
  z-index: 30;
}

.header-inner {
  max-width: var(--shell-width);
  margin: 0 auto;
  padding: 0 var(--shell-pad);
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  white-space: nowrap;
}

.brand:hover {
  text-decoration: none;
  color: var(--color-primary-dark);
}

.primary-nav.site-nav {
  flex: 1;
  display: flex;
  justify-content: flex-end;
}

.primary-nav.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.primary-nav.site-nav li {
  margin: 0;
}

.primary-nav.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 12px;
  font-size: 15px;
  color: var(--color-text);
  border-bottom: 2px solid transparent;
}

.primary-nav.site-nav a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.primary-nav.site-nav a.is-current {
  color: var(--color-primary);
  font-weight: 700;
  border-bottom-color: var(--color-primary);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background: var(--color-surface);
  cursor: pointer;
  position: relative;
}

.nav-toggle::before {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  top: 15px;
  height: 2px;
  background: var(--color-primary);
  box-shadow: 0 6px 0 var(--color-primary), 0 12px 0 var(--color-primary);
}

.index-strip {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-line);
}

.index-strip ul {
  list-style: none;
  margin: 0 auto;
  padding: 0 var(--shell-pad);
  max-width: var(--shell-width);
  display: flex;
  align-items: center;
  gap: 22px;
  height: 44px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.index-strip li {
  margin: 0;
  flex: 0 0 auto;
}

.index-strip a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-muted);
  white-space: nowrap;
}

.index-strip a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.site-main {
  display: block;
}

.home-main {
  max-width: var(--shell-width);
  margin: 0 auto;
  padding: 0 var(--shell-pad) 56px;
}

.inner-main {
  max-width: var(--shell-width);
  margin: 0 auto;
  padding: 0 var(--shell-pad) 56px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 12px;
  color: var(--color-muted);
  padding: 18px 0 4px;
}

.breadcrumb a {
  color: var(--color-muted);
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

.breadcrumb-sep {
  color: var(--color-line);
}

.breadcrumb-current {
  color: var(--color-text);
}

.page-header {
  padding: 8px 0 20px;
  border-bottom: 1px solid var(--color-line);
  margin-bottom: 32px;
  position: relative;
}

.page-header::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 96px;
  height: 3px;
  background: var(--color-accent);
}

.page-title {
  font-size: 30px;
  line-height: 1.35;
  margin: 0;
  color: var(--color-primary);
}

.btn,
.btn-primary,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  color: #fff;
  text-decoration: none;
}

.btn-ghost {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-ghost:hover {
  background: #E7EDEB;
  color: var(--color-primary-dark);
  text-decoration: none;
}

.eyebrow {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-accent);
  margin: 0 0 10px;
}

.lede,
.lead {
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-muted);
  margin: 0 0 1em;
}

.section-lede,
.section-intro,
.section-note {
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-muted);
  margin: 0 0 18px;
}

.table-note,
.table-source,
.source-note {
  font-size: 13px;
  color: var(--color-muted);
  margin: 12px 0 0;
}

.table-scroll,
.table-wrap {
  overflow-x: auto;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  margin: 0 0 4px;
}

.table-scroll table,
.table-wrap table {
  min-width: 560px;
}

.tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-accent);
  border-left: 3px solid var(--color-accent);
  padding-left: 8px;
}

.related-links,
.related-entry {
  margin: 40px 0 0;
  padding: 24px 0 0;
  border-top: 1px solid var(--color-line);
}

.related-links h2,
.related-entry h2 {
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--color-muted);
  margin: 0 0 12px;
}

.related-links ul,
.related-entry ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.related-links li,
.related-entry li {
  margin: 0;
}

.related-links a,
.related-entry a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  font-size: 14px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background: var(--color-surface);
}

.related-links a:hover,
.related-entry a:hover {
  border-color: var(--color-primary);
  text-decoration: none;
}

.media-figure,
.section-media,
.media-block,
.feedback-figure,
.boundary-figure,
.store-figure,
.band-media,
.hero-media {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.media-figure img,
.section-media img,
.media-block img,
.feedback-figure img,
.boundary-figure img,
.store-figure img,
.band-media img,
.hero-media img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.media-figure figcaption,
.section-media figcaption,
.media-block figcaption,
.feedback-figure figcaption,
.boundary-figure figcaption,
.store-figure figcaption,
.band-media figcaption,
.hero-media figcaption {
  padding: 8px 12px 10px;
  margin: 0;
  border-top: 1px solid var(--color-line);
  background: var(--color-surface);
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 60;
  background: var(--color-primary);
  color: #fff;
  padding: 10px 16px;
  border-radius: var(--radius);
  transition: top 0.18s ease;
}

.skip-link:focus {
  top: 12px;
  color: #fff;
  text-decoration: none;
}

.page-layout {
  display: grid;
  grid-template-columns: 232px minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

.page-layout.sidebar-left {
  grid-template-columns: 232px minmax(0, 1fr);
}

.sidebar-left .content-col,
.sidebar-left .content-column {
  min-width: 0;
}

.topic-tree {
  position: sticky;
  top: 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 16px;
}

.topic-tree h2,
.tree-heading {
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--color-muted);
  margin: 0 0 10px;
}

.topic-tree ul,
.tree-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.topic-tree li,
.tree-nav li {
  margin: 0;
}

.topic-tree a,
.tree-nav a {
  display: flex;
  align-items: center;
  min-height: 40px;
  padding: 6px 10px;
  font-size: 14px;
  color: var(--color-text);
  border-left: 3px solid transparent;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.topic-tree a:hover,
.tree-nav a:hover {
  background: var(--color-bg);
  border-left-color: var(--color-accent);
  text-decoration: none;
}

.tree-toggle {
  display: none;
}

.section-announce,
.section-announcer {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.path-steps,
.resume-list {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
}

.path-steps li,
.resume-list li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-line);
  margin: 0;
}

.path-steps li:last-child,
.resume-list li:last-child {
  border-bottom: 0;
}

.path-steps .step-no,
.resume-list .step-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 1px solid var(--color-line);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 700;
}

.path-steps strong,
.resume-list strong {
  display: block;
  margin-bottom: 2px;
  font-size: 15px;
}

.data-table {
  background: var(--color-surface);
}

.hero {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 40px;
  align-items: center;
  padding: 40px 0 44px;
  border-bottom: 1px solid var(--color-line);
}

.hero-copy {
  min-width: 0;
}

.hero-copy h1 {
  font-size: 30px;
  line-height: 1.35;
  color: var(--color-primary);
  margin: 0 0 16px;
}

.hero-copy .lede {
  max-width: 52ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.hero-media {
  min-width: 0;
}

.hero-media img {
  aspect-ratio: 16 / 10;
}

.dimension-entry {
  padding: 44px 0;
  border-bottom: 1px solid var(--color-line);
}

.dimension-entry h2 {
  font-size: 22px;
  margin-bottom: 20px;
}

.entry-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.entry-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-top: 3px solid var(--color-primary);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.entry-card h3 {
  font-size: 16px;
  margin: 0 0 8px;
}

.entry-card p {
  font-size: 14px;
  color: var(--color-muted);
  margin: 0 0 14px;
  flex: 1;
}

.entry-card a {
  font-size: 14px;
  font-weight: 600;
  align-self: flex-start;
  border-bottom: 1px solid var(--color-primary);
}

.channel-band {
  padding: 44px 0;
  border-bottom: 1px solid var(--color-line);
}

.band-head {
  margin-bottom: 20px;
}

.band-head h2 {
  font-size: 22px;
  margin-bottom: 6px;
}

.band-head p {
  font-size: 14px;
  color: var(--color-muted);
  margin: 0;
}

.channel-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1.1fr 1fr 0.9fr;
  gap: 16px;
  align-items: stretch;
}

.channel-block {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.channel-block h3 {
  font-size: 15px;
  color: var(--color-primary);
  margin: 0 0 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-line);
}

.channel-block .channel-scope {
  font-size: 13px;
  color: var(--color-text);
  margin: 0 0 8px;
  flex: 1;
}

.channel-block .channel-naming {
  font-size: 12px;
  color: var(--color-muted);
  margin: 0 0 12px;
}

.channel-block a {
  font-size: 13px;
  font-weight: 600;
  align-self: flex-start;
}

.band-media {
  margin-top: 20px;
}

.band-media img {
  aspect-ratio: 21 / 8;
}

.scene-matrix,
.coverage-matrix,
.checklist,
.label-sample,
.faq,
.closing-bar {
  padding: 44px 0;
  border-bottom: 1px solid var(--color-line);
}

.scene-matrix h2,
.coverage-matrix h2,
.checklist h2,
.label-sample h2,
.faq h2 {
  font-size: 22px;
  margin-bottom: 8px;
}

.conclusion-bar {
  background: #EAF0EE;
  border-left: 3px solid var(--color-primary);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 12px 16px;
  font-size: 14px;
  color: var(--color-primary-dark);
  margin: 0 0 16px;
}

.checklist-items {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  counter-reset: checklist;
}

.checklist-items li {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-line);
  margin: 0;
  font-size: 15px;
}

.checklist-items li::before {
  counter-increment: checklist;
  content: counter(checklist, decimal-leading-zero);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 1px solid var(--color-line);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 700;
}

.checklist-items li strong {
  display: block;
}

.checklist-more {
  margin: 0;
  font-size: 14px;
}

.checklist-more a {
  font-weight: 600;
  border-bottom: 1px solid var(--color-primary);
}

.faq details {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 0 16px;
  margin-bottom: 10px;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 15px;
  padding: 14px 0;
  min-height: 44px;
  display: flex;
  align-items: center;
  list-style: none;
}

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

.faq summary::after {
  content: "+";
  margin-left: auto;
  color: var(--color-accent);
  font-weight: 700;
  padding-left: 12px;
}

.faq details[open] summary::after {
  content: "–";
}

.faq details p {
  margin: 0 0 14px;
  font-size: 14px;
  color: var(--color-muted);
  border-top: 1px solid var(--color-line);
  padding-top: 12px;
}

.closing-bar {
  border-bottom: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 24px;
  margin: 44px 0 0;
}

.closing-bar h2 {
  font-size: 18px;
  margin: 0 0 6px;
}

.closing-bar p {
  margin: 0;
  font-size: 14px;
  color: var(--color-muted);
}

.closing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.section {
  padding: 32px 0;
  border-bottom: 1px solid var(--color-line);
}

.section-head {
  margin-bottom: 18px;
}

.section-head h2 {
  font-size: 22px;
  margin-bottom: 6px;
}

.section-head .section-note {
  margin: 0;
}

.channel-overview .section-media {
  margin-bottom: 22px;
}

.channel-overview .section-media img {
  aspect-ratio: 21 / 8;
}

.channel-overview .channel-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.channel-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.channel-card h3 {
  font-size: 15px;
  color: var(--color-primary);
  margin: 0 0 10px;
}

.channel-card .channel-scope {
  font-size: 13px;
  margin: 0 0 8px;
}

.channel-card .channel-mis {
  font-size: 12px;
  color: var(--color-muted);
  margin: 0 0 8px;
}

.channel-card .channel-diff {
  font-size: 12px;
  color: var(--color-muted);
  margin: 0 0 12px;
  flex: 1;
}

.channel-card .channel-link {
  font-size: 13px;
  font-weight: 600;
  align-self: flex-start;
}

.naming-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.naming-col {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 18px;
  min-width: 0;
}

.naming-col h3 {
  font-size: 15px;
  color: var(--color-primary);
  margin: 0 0 10px;
}

.naming-col p {
  font-size: 14px;
  color: var(--color-muted);
  margin: 0 0 10px;
}

.naming-col ul {
  margin: 0;
  padding-left: 18px;
  font-size: 14px;
}

.matrix-table {
  min-width: 640px;
}

.page-title-block {
  padding: 0 0 24px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--color-line);
}

.content-section {
  padding: 0 0 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--color-line);
}

.content-section:last-child {
  border-bottom: 0;
}

.content-section h2 {
  font-size: 20px;
  margin-bottom: 8px;
}

.store-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

.store-text {
  min-width: 0;
}

.store-rules {
  margin: 0;
  padding-left: 18px;
  font-size: 14px;
}

.store-figure img {
  aspect-ratio: 4 / 3;
}

.resume-table {
  min-width: 520px;
}

.link-bar-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.link-bar-list li {
  margin: 0;
}

.link-bar-list a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  font-size: 14px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background: var(--color-surface);
}

.link-bar-list a:hover {
  border-color: var(--color-primary);
  text-decoration: none;
}

.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.col {
  min-width: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 18px;
}

.col h3 {
  font-size: 15px;
  color: var(--color-primary);
  margin: 0 0 10px;
}

.field-list {
  margin: 0;
}

.field-list dt {
  font-weight: 700;
  font-size: 14px;
  color: var(--color-text);
  margin-top: 10px;
}

.field-list dt:first-child {
  margin-top: 0;
}

.field-list dd {
  margin: 2px 0 0;
  font-size: 14px;
  color: var(--color-muted);
}

.label-table {
  min-width: 620px;
}

.label-table td:last-child {
  color: var(--color-muted);
}

.page-intro {
  margin-bottom: 28px;
}

.entry-types,
.entry-checklist,
.entry-abnormal {
  padding: 0 0 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--color-line);
}

.entry-types h2,
.entry-checklist h2,
.entry-abnormal h2 {
  font-size: 20px;
  margin-bottom: 8px;
}

.entry-types .media-block {
  margin-bottom: 20px;
}

.entry-types .media-block img {
  aspect-ratio: 21 / 8;
}

.type-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.type-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 18px;
  min-width: 0;
}

.type-card h3 {
  font-size: 15px;
  color: var(--color-primary);
  margin: 0 0 8px;
}

.type-card p {
  font-size: 14px;
  margin: 0 0 8px;
}

.type-card .type-misread {
  font-size: 13px;
  color: var(--color-warn);
  margin: 0;
  padding-top: 8px;
  border-top: 1px dashed var(--color-line);
}

.check-list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
}

.check-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-line);
  margin: 0;
}

.check-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
}

.check-body {
  min-width: 0;
}

.check-body h3 {
  font-size: 15px;
  margin: 0 0 4px;
}

.check-body p {
  font-size: 14px;
  color: var(--color-muted);
  margin: 0;
}

.check-tail {
  font-size: 14px;
  margin: 0;
}

.check-tail a {
  font-weight: 600;
  border-bottom: 1px solid var(--color-primary);
}

.abnormal-table {
  min-width: 560px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.rule-line {
  display: block;
  width: 96px;
  height: 3px;
  background: var(--color-accent);
  margin-top: 4px;
}

.feedback-column {
  max-width: 840px;
  margin: 0 auto;
}

.feedback-fields,
.feedback-samples,
.feedback-flow,
.feedback-scope {
  padding: 0 0 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--color-line);
}

.feedback-fields h2,
.feedback-samples h2,
.feedback-flow h2,
.feedback-scope h2 {
  font-size: 20px;
  margin-bottom: 8px;
}

.feedback-figure {
  margin-bottom: 20px;
}

.feedback-figure img {
  aspect-ratio: 16 / 9;
}

.field-table {
  min-width: 480px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.field-table th[scope="row"] {
  width: 120px;
}

.sample-item {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-left: 3px solid var(--color-accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 16px;
  margin-bottom: 12px;
}

.sample-item h3 {
  font-size: 15px;
  margin: 0 0 6px;
}

.sample-item p {
  font-size: 14px;
  color: var(--color-muted);
  margin: 0;
}

.flow-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: flow;
}

.flow-step {
  position: relative;
  padding: 0 0 20px 44px;
  margin: 0 0 0 15px;
  border-left: 2px solid var(--color-line);
}

.flow-step:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.flow-step::before {
  counter-increment: flow;
  content: counter(flow);
  position: absolute;
  left: -16px;
  top: 0;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.flow-step h3 {
  font-size: 15px;
  margin: 0 0 4px;
}

.flow-step p {
  font-size: 14px;
  color: var(--color-muted);
  margin: 0;
}

.scope-list {
  margin: 0 0 12px;
  padding-left: 18px;
  font-size: 14px;
}

.scope-note {
  font-size: 14px;
  margin: 0;
}

.narrow-shell {
  max-width: 840px;
  margin: 0 auto;
}

.boundary-compare,
.boundary-usage,
.boundary-relation {
  padding: 0 0 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--color-line);
}

.boundary-compare h2,
.boundary-usage h2,
.boundary-relation h2 {
  font-size: 20px;
  margin-bottom: 8px;
}

.boundary-figure {
  margin-bottom: 20px;
}

.boundary-figure img {
  aspect-ratio: 16 / 9;
}

.compare-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.compare-col {
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 18px;
  background: var(--color-surface);
  min-width: 0;
}

.compare-col h3 {
  font-size: 15px;
  margin: 0 0 10px;
}

.compare-col--cover {
  border-top: 3px solid var(--color-primary);
}

.compare-col--cover h3 {
  color: var(--color-primary);
}

.compare-col--exclude {
  border-top: 3px solid var(--color-accent);
}

.compare-col--exclude h3 {
  color: var(--color-accent);
}

.compare-col ul {
  margin: 0;
  padding-left: 18px;
  font-size: 14px;
}

.judge-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.judge-list li {
  padding: 14px 0;
  border-bottom: 1px solid var(--color-line);
  margin: 0;
}

.judge-list li:last-child {
  border-bottom: 0;
}

.judge-list h3 {
  font-size: 15px;
  margin: 0 0 4px;
}

.judge-list p {
  font-size: 14px;
  color: var(--color-muted);
  margin: 0;
}

.relation-links {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.relation-links li {
  margin: 0;
}

.relation-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  font-size: 14px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background: var(--color-surface);
}

.relation-links a:hover {
  border-color: var(--color-primary);
  text-decoration: none;
}

.error-main {
  max-width: var(--shell-width);
  margin: 0 auto;
  padding: 48px var(--shell-pad) 64px;
}

.error-inner {
  max-width: 640px;
}

.error-code {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-accent);
  margin: 0 0 8px;
}

.error-inner h1 {
  font-size: 30px;
  color: var(--color-primary);
  margin: 0 0 12px;
}

.error-lead {
  font-size: 16px;
  color: var(--color-muted);
  margin: 0 0 24px;
}

.error-paths {
  padding: 24px 0;
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  margin-bottom: 20px;
}

.error-paths h2 {
  font-size: 16px;
  margin: 0 0 12px;
}

.error-paths ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.error-paths li {
  margin: 0;
}

.error-paths a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  font-size: 14px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background: var(--color-surface);
}

.error-paths a:hover {
  border-color: var(--color-primary);
  text-decoration: none;
}

.error-note {
  font-size: 14px;
  color: var(--color-muted);
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-line);
  margin-top: 0;
}

.footer-grid {
  max-width: var(--shell-width);
  margin: 0 auto;
  padding: 40px var(--shell-pad) 24px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px;
}

.footer-col {
  min-width: 0;
}

.footer-col h2 {
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--color-primary);
  margin: 0 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-line);
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-col li {
  margin: 0;
}

.footer-col a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--color-muted);
}

.footer-col a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  border-top: 1px solid var(--color-line);
  background: var(--color-bg);
}

.footer-bottom p {
  max-width: var(--shell-width);
  margin: 0 auto;
  padding: 14px var(--shell-pad) 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--color-muted);
}

.footer-bottom p.copyright {
  padding: 4px var(--shell-pad) 18px;
}

@media (max-width: 1080px) {
  .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .channel-overview .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 960px) {
  :root {
    --shell-pad: 24px;
  }

  .header-inner {
    height: 60px;
  }

  .nav-toggle {
    display: block;
  }

  .primary-nav.site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-line);
    box-shadow: 0 8px 16px rgba(26, 34, 37, 0.08);
    padding: 8px var(--shell-pad) 16px;
    display: block;
    flex: none;
  }

  .primary-nav.site-nav ul.nav-list {
    display: none;
  }

  .primary-nav.site-nav ul.nav-list.is-open {
    display: flex;
    flex-direction: column;
    gap: 0;
    justify-content: flex-start;
  }

  .primary-nav.site-nav a {
    width: 100%;
    min-height: 46px;
    padding: 0 4px;
    border-bottom: 1px solid var(--color-line);
    justify-content: flex-start;
  }

  .primary-nav.site-nav li:last-child a {
    border-bottom: 0;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
    padding: 28px 0 32px;
  }

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

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

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

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

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

  .page-layout,
  .page-layout.sidebar-left {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .topic-tree {
    position: static;
  }

  .tree-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-height: 44px;
    margin-top: 4px;
    padding: 0 14px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    background: var(--color-bg);
    border: 1px solid var(--color-line);
    border-radius: var(--radius);
    cursor: pointer;
  }

  .tree-toggle::after {
    content: "+";
    font-weight: 700;
    color: var(--color-accent);
  }

  .tree-toggle[aria-expanded="true"]::after {
    content: "–";
  }

  .topic-tree .tree-nav {
    display: none;
    margin-top: 8px;
  }

  .topic-tree .tree-nav.is-open {
    display: block;
  }

  .topic-tree ul {
    display: block;
  }

  .store-grid,
  .two-col,
  .compare-columns {
    grid-template-columns: minmax(0, 1fr);
  }

  .closing-bar {
    grid-template-columns: minmax(0, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }
}

@media (max-width: 640px) {
  :root {
    --shell-pad: 18px;
  }

  body.site-body {
    font-size: 15px;
  }

  .brand {
    font-size: 16px;
  }

  .index-strip ul {
    gap: 16px;
  }

  .page-title {
    font-size: 24px;
  }

  .hero-copy h1 {
    font-size: 24px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn,
  .hero-actions .btn-primary,
  .hero-actions .btn-ghost {
    width: 100%;
  }

  .channel-grid,
  .channel-overview .channel-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .band-media img {
    aspect-ratio: 16 / 10;
  }

  .closing-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .closing-actions .btn,
  .closing-actions .btn-primary,
  .closing-actions .btn-ghost {
    width: 100%;
  }

  .error-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .error-actions .btn-primary,
  .error-actions .btn-ghost {
    width: 100%;
  }

  .footer-grid {
    grid-template-columns: minmax(0, 1fr);
    padding-top: 28px;
  }

  .check-item,
  .checklist-items li {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 10px;
  }

  .flow-step {
    padding-left: 38px;
  }

  .table-scroll table,
  .table-wrap table,
  .matrix-table,
  .label-table,
  .resume-table,
  .field-table,
  .abnormal-table {
    min-width: 480px;
  }
}