:root {
  --color-ink: #1c2b3a;
  --color-ink-soft: #5a6b7b;
  --color-bg: #f5f7f9;
  --color-surface: #ffffff;
  --color-line: #dde3e9;
  --color-line-strong: #c3ccd6;
  --color-accent: #e6a0b8;
  --color-accent-deep: #c9768f;
  --color-ok: #2f7d63;
  --color-warn: #b8863b;
  --radius-s: 4px;
  --radius-m: 6px;
  --radius-l: 8px;
  --shadow-s: 0 1px 2px rgba(28, 43, 58, 0.06);
  --shadow-m: 0 4px 14px rgba(28, 43, 58, 0.09);
  --wrap: 1180px;
  --gap-s: 10px;
  --gap-m: 16px;
  --gap-l: 24px;
  --gap-xl: 34px;
}

/* ============ base ============ */
* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
  font-size: 15px;
  line-height: 1.75;
  font-weight: 400;
  font-variant-numeric: tabular-nums;
}

h1, h2, h3, h4 {
  margin: 0;
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-ink);
}

p {
  margin: 0;
}

ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

a {
  color: var(--color-ink);
  text-decoration: none;
  transition: color 0.18s ease, border-color 0.18s ease;
}

a:hover {
  color: var(--color-accent-deep);
}

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

figure {
  margin: 0;
}

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

button {
  font: inherit;
  color: inherit;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ============ layout ============ */
.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-line);
  position: sticky;
  top: 0;
  z-index: 40;
}

.header-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 20px;
  min-height: 68px;
  display: flex;
  align-items: center;
  gap: var(--gap-m);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  padding: 6px 0;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-m);
  background: var(--color-accent);
  border: 1px solid var(--color-accent-deep);
  position: relative;
  flex: 0 0 auto;
}

.brand-mark::before,
.brand-mark::after {
  content: "";
  position: absolute;
  background: var(--color-surface);
  border-radius: 1px;
}

.brand-mark::before {
  left: 9px;
  top: 8px;
  width: 16px;
  height: 3px;
}

.brand-mark::after {
  left: 9px;
  top: 15px;
  width: 10px;
  height: 3px;
  box-shadow: 0 7px 0 0 var(--color-surface);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.brand-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-ink);
}

.brand-sub {
  font-size: 11px;
  color: var(--color-ink-soft);
  letter-spacing: 0.02em;
}

.site-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: center;
}

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

.nav-list > li {
  display: block;
}

.nav-link {
  display: block;
  padding: 8px 12px;
  font-size: 14px;
  color: var(--color-ink-soft);
  border-bottom: 2px solid transparent;
  border-radius: var(--radius-s) var(--radius-s) 0 0;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--color-ink);
  background: var(--color-bg);
}

.nav-link.is-current {
  color: var(--color-ink);
  font-weight: 600;
  border-bottom-color: var(--color-accent);
}

.header-current {
  flex: 0 0 auto;
  font-size: 12px;
  color: var(--color-ink-soft);
  padding: 4px 10px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-s);
  background: var(--color-bg);
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-m);
  background: var(--color-surface);
  padding: 0;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-ink);
  border-radius: 1px;
}

.site-main {
  flex: 1 1 auto;
  width: 100%;
}

.home-main,
.inner-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 20px 56px;
}

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

.footer-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 34px 20px 22px;
  display: grid;
  grid-template-columns: minmax(240px, 1fr) minmax(0, 2fr);
  gap: var(--gap-xl);
}

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

.footer-name {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.footer-desc {
  font-size: 13px;
  color: var(--color-ink-soft);
  line-height: 1.7;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap-l);
}

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

.footer-col-title {
  font-size: 14px;
  margin-bottom: 10px;
}

.footer-list li {
  margin-bottom: 6px;
}

.footer-list a {
  font-size: 13px;
  color: var(--color-ink-soft);
}

.footer-list a:hover {
  color: var(--color-accent-deep);
}

.footer-bottom {
  border-top: 1px solid var(--color-line);
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 14px 20px 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  justify-content: space-between;
}

.footer-copy,
.footer-note {
  font-size: 12px;
  color: var(--color-ink-soft);
  line-height: 1.7;
}

.footer-note {
  max-width: 720px;
}

/* ============ components ============ */
.section-head {
  margin-bottom: var(--gap-l);
}

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

.section-desc,
.section-lead,
.section-intro,
.section-note {
  font-size: 14px;
  color: var(--color-ink-soft);
  max-width: 860px;
}

.section-desc a,
.section-lead a,
.section-note a {
  color: var(--color-accent-deep);
  border-bottom: 1px dotted var(--color-accent-deep);
}

.sub-title {
  font-size: 16px;
  margin-bottom: 10px;
  padding-left: 10px;
  border-left: 3px solid var(--color-accent);
}

.tag-chip {
  display: inline-block;
  font-size: 12px;
  line-height: 1.6;
  padding: 2px 9px;
  border: 1px solid var(--color-line-strong);
  border-radius: 999px;
  background: var(--color-surface);
  color: var(--color-ink-soft);
  white-space: nowrap;
}

a.tag-chip:hover {
  border-color: var(--color-accent);
  color: var(--color-accent-deep);
}

.tag {
  display: inline-block;
  font-size: 12px;
  padding: 1px 8px;
  border-radius: var(--radius-s);
  background: var(--color-bg);
  border: 1px solid var(--color-line);
  color: var(--color-ink-soft);
}

.status-tag {
  display: inline-block;
  font-size: 12px;
  padding: 2px 9px;
  border-radius: var(--radius-s);
  border: 1px solid transparent;
  white-space: nowrap;
}

.status-tag-normal {
  color: var(--color-ok);
  background: rgba(47, 125, 99, 0.1);
  border-color: rgba(47, 125, 99, 0.28);
}

.status-tag-changed {
  color: var(--color-warn);
  background: rgba(184, 134, 59, 0.12);
  border-color: rgba(184, 134, 59, 0.3);
}

.status-new {
  color: var(--color-accent-deep);
  background: rgba(230, 160, 184, 0.18);
  border-color: rgba(201, 118, 143, 0.4);
}

.status-update {
  color: var(--color-warn);
  background: rgba(184, 134, 59, 0.12);
  border-color: rgba(184, 134, 59, 0.3);
}

.status-field {
  display: inline-block;
  font-size: 12px;
  padding: 2px 9px;
  border-radius: var(--radius-s);
  border: 1px solid var(--color-line);
  background: var(--color-bg);
  color: var(--color-ink-soft);
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 13px;
  color: var(--color-ink-soft);
  padding: 18px 0 0;
}

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

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

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

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

.page-header {
  padding: 18px 0 24px;
  border-bottom: 1px solid var(--color-line);
  margin-bottom: var(--gap-xl);
}

.page-title {
  font-size: 30px;
  line-height: 1.35;
  margin-bottom: 12px;
}

.page-description {
  font-size: 14px;
  color: var(--color-ink-soft);
  max-width: 860px;
}

.page-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 14px;
}

.meta-item {
  font-size: 12px;
  color: var(--color-ink-soft);
  padding: 2px 10px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-s);
  background: var(--color-surface);
}

.table-wrap {
  overflow-x: auto;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-s);
}

.data-table,
.field-table {
  min-width: 640px;
  font-size: 14px;
}

.table-caption,
.field-caption {
  caption-side: top;
  text-align: left;
  padding: 12px 16px;
  font-size: 13px;
  color: var(--color-ink-soft);
  border-bottom: 1px solid var(--color-line);
}

.data-table th,
.data-table td,
.field-table th,
.field-table td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--color-line);
  text-align: left;
  vertical-align: top;
}

.data-table thead th,
.field-table thead th {
  font-size: 13px;
  color: var(--color-ink);
  background: var(--color-bg);
  font-weight: 600;
  white-space: nowrap;
}

.data-table tbody th,
.field-table tbody th {
  font-weight: 600;
  color: var(--color-ink);
  white-space: nowrap;
}

.data-table tbody tr:last-child th,
.data-table tbody tr:last-child td,
.field-table tbody tr:last-child th,
.field-table tbody tr:last-child td {
  border-bottom: 0;
}

.data-table tbody tr:hover,
.field-table tbody tr:hover {
  background: rgba(230, 160, 184, 0.07);
}

.page-pager,
.post-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap-m);
  margin-top: var(--gap-xl);
  padding-top: var(--gap-l);
  border-top: 1px solid var(--color-line);
}

.pager-link,
.post-nav-link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-l);
  background: var(--color-surface);
  min-height: 44px;
  min-width: 0;
  box-shadow: var(--shadow-s);
}

.pager-link:hover,
.post-nav-link:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-m);
}

.pager-next,
.post-nav-next {
  text-align: right;
}

.pager-label,
.post-nav-label {
  font-size: 12px;
  color: var(--color-ink-soft);
}

.pager-title,
.post-nav-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink);
  overflow-wrap: break-word;
}

/* ============ pages: index ============ */
.site-factbar {
  background: var(--color-ink);
  color: #eef2f6;
}

.site-factbar p {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 8px 20px;
  font-size: 12.5px;
  line-height: 1.6;
}

.hero-section {
  padding: 34px 0 40px;
  border-bottom: 1px solid var(--color-line);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: var(--gap-xl);
  align-items: start;
}

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

.hero-eyebrow {
  font-size: 12.5px;
  color: var(--color-accent-deep);
  margin-bottom: 10px;
}

.hero-copy .page-title {
  margin-bottom: 14px;
}

.hero-lead {
  font-size: 15px;
  color: var(--color-ink-soft);
  max-width: 620px;
  margin-bottom: var(--gap-l);
}

.hero-paths {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap-m);
}

.path-item {
  min-width: 0;
}

.path-link {
  display: block;
  padding: 14px;
  border: 1px solid var(--color-line);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-l);
  background: var(--color-surface);
  box-shadow: var(--shadow-s);
  min-height: 44px;
}

.path-link:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-m);
}

.path-name {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
}

.path-desc {
  display: block;
  font-size: 12.5px;
  color: var(--color-ink-soft);
  line-height: 1.65;
}

.hero-side {
  min-width: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-l);
  padding: 18px;
  box-shadow: var(--shadow-s);
}

.hero-side-title {
  font-size: 15px;
  margin-bottom: 12px;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.hero-figure {
  border-radius: var(--radius-m);
  overflow: hidden;
  border: 1px solid var(--color-line);
  background: var(--color-bg);
}

.hero-figure img {
  width: 100%;
  height: 232px;
  object-fit: cover;
}

.hero-figure figcaption {
  font-size: 12px;
  color: var(--color-ink-soft);
  padding: 8px 12px;
  line-height: 1.6;
  border-top: 1px solid var(--color-line);
}

.genre-overview {
  padding: 40px 0;
  border-bottom: 1px solid var(--color-line);
}

.genre-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--gap-m);
}

.genre-col {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-l);
  padding: 16px;
  min-width: 0;
  box-shadow: var(--shadow-s);
}

.genre-col:hover {
  border-color: var(--color-line-strong);
}

.genre-name {
  font-size: 16px;
  margin-bottom: 8px;
}

.genre-scope {
  font-size: 13px;
  color: var(--color-ink-soft);
  line-height: 1.7;
  margin-bottom: 12px;
}

.genre-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.genre-count {
  font-size: 13px;
  color: var(--color-ink-soft);
  padding-top: 10px;
  border-top: 1px dashed var(--color-line);
}

.genre-count a {
  color: var(--color-accent-deep);
  font-weight: 600;
}

.cover-update {
  padding: 40px 0;
  border-bottom: 1px solid var(--color-line);
}

.cover-update-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  gap: var(--gap-xl);
  align-items: start;
}

.cover-index,
.update-batch {
  min-width: 0;
}

.cover-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap-m);
  margin-top: 12px;
}

.cover-card {
  min-width: 0;
}

.cover-link {
  display: block;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-l);
  overflow: hidden;
  background: var(--color-surface);
  box-shadow: var(--shadow-s);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.cover-link:hover {
  transform: translateY(-2px);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-m);
}

.cover-link img {
  width: 100%;
  height: 148px;
  object-fit: cover;
  background: var(--color-bg);
}

.cover-name {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  padding: 9px 11px 3px;
  overflow-wrap: break-word;
}

.cover-tag {
  display: block;
  font-size: 12px;
  color: var(--color-ink-soft);
  padding: 0 11px 10px;
}

.batch-note,
.rank-note,
.field-note {
  font-size: 13px;
  color: var(--color-ink-soft);
  margin-top: 4px;
}

.batch-note a,
.rank-note a,
.field-note a {
  color: var(--color-accent-deep);
}

.batch-group {
  margin-top: 16px;
  border-top: 1px solid var(--color-line);
  padding-top: 12px;
}

.batch-date {
  font-size: 13.5px;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.batch-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.batch-row {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 8px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-m);
  background: var(--color-surface);
}

.batch-row:hover {
  border-color: var(--color-accent);
}

.batch-thumb {
  width: 44px;
  height: 44px;
  object-fit: cover;
  border-radius: var(--radius-s);
  border: 1px solid var(--color-line);
}

.batch-name {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  overflow-wrap: break-word;
}

.batch-genre {
  display: block;
  font-size: 12px;
  color: var(--color-ink-soft);
}

.rank-field {
  padding: 40px 0;
  border-bottom: 1px solid var(--color-line);
}

.rank-field-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  gap: var(--gap-xl);
  align-items: start;
}

.rank-panel,
.field-panel {
  min-width: 0;
}

.rank-list {
  margin-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.rank-row {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-m);
}

.rank-row:hover {
  border-color: var(--color-accent);
}

.rank-no {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-accent-deep);
}

.rank-name {
  font-size: 13.5px;
  font-weight: 600;
  overflow-wrap: break-word;
}

.rank-genre {
  font-size: 12px;
  color: var(--color-ink-soft);
  white-space: nowrap;
}

.field-panel .table-wrap {
  margin-top: 12px;
}

.field-panel .field-table {
  min-width: 0;
}

.field-panel .field-table th,
.field-panel .field-table td {
  padding: 9px 12px;
  font-size: 13px;
}

.site-index {
  padding: 40px 0 0;
}

.index-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: var(--gap-m);
}

.index-card {
  min-width: 0;
}

.index-link {
  display: block;
  height: 100%;
  padding: 14px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-s);
  min-height: 44px;
}

.index-link:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-m);
}

.index-name {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 5px;
}

.index-desc {
  display: block;
  font-size: 12.5px;
  color: var(--color-ink-soft);
  line-height: 1.65;
}

/* ============ pages: inner shared ============ */
.section {
  padding: 34px 0;
  border-bottom: 1px solid var(--color-line);
}

.section:last-of-type {
  border-bottom: 0;
}

.section > .section-title {
  margin-bottom: 8px;
}

.section > .section-lead,
.section > .section-intro,
.section > .section-note {
  margin-bottom: var(--gap-l);
}

.media-block,
.section-figure,
.ranking-figure,
.flow-figure,
.media-figure {
  margin: 0 0 var(--gap-l);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-l);
  overflow: hidden;
  background: var(--color-surface);
  box-shadow: var(--shadow-s);
}

.media-block img,
.section-figure img,
.ranking-figure img,
.flow-figure img,
.media-figure img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.media-caption,
.section-figure figcaption,
.ranking-figcaption,
.flow-figure figcaption,
.media-figure figcaption {
  font-size: 12.5px;
  color: var(--color-ink-soft);
  padding: 10px 14px;
  border-top: 1px solid var(--color-line);
  line-height: 1.7;
}

/* genre-catalog */
.direction-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap-m);
}

.direction-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-l);
  padding: 16px;
  min-width: 0;
  box-shadow: var(--shadow-s);
}

.direction-card:hover {
  border-color: var(--color-line-strong);
}

.direction-name {
  font-size: 16px;
  margin-bottom: 8px;
}

.direction-scope {
  font-size: 13px;
  color: var(--color-ink-soft);
  line-height: 1.7;
  margin-bottom: 12px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

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

.entry-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-l);
  overflow: hidden;
  min-width: 0;
  box-shadow: var(--shadow-s);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.entry-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-m);
}

.entry-cover img {
  width: 100%;
  height: 156px;
  object-fit: cover;
  background: var(--color-bg);
}

.entry-title {
  font-size: 14.5px;
  padding: 10px 12px 6px;
}

.entry-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 0 12px 8px;
}

.entry-note {
  font-size: 12.5px;
  color: var(--color-ink-soft);
  padding: 0 12px 12px;
  line-height: 1.65;
}

.section-foot {
  margin-top: var(--gap-l);
  font-size: 13px;
  color: var(--color-ink-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
}

.section-foot a {
  color: var(--color-accent-deep);
}

.rule-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap-m);
  counter-reset: rule;
}

.rule-item {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-l);
  padding: 16px;
  min-width: 0;
}

.rule-name {
  font-size: 15px;
  margin-bottom: 8px;
}

.rule-desc,
.rule-text {
  font-size: 13px;
  color: var(--color-ink-soft);
  line-height: 1.7;
}

.rule-text a {
  color: var(--color-accent-deep);
}

/* update-log */
.batch-status {
  padding: 34px 0;
  border-bottom: 1px solid var(--color-line);
}

.batch-status .section-title {
  margin-bottom: var(--gap-m);
}

.batch-status-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-left: 4px solid var(--color-ok);
  border-radius: var(--radius-l);
  padding: 18px;
  box-shadow: var(--shadow-s);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px 20px;
  align-items: start;
}

.batch-status-fields {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px 20px;
}

.batch-status-field {
  min-width: 0;
}

.batch-status-field dt {
  font-size: 12px;
  color: var(--color-ink-soft);
  margin-bottom: 3px;
}

.batch-status-field dd {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  overflow-wrap: break-word;
}

.batch-status-note {
  grid-column: 1 / -1;
  font-size: 13px;
  color: var(--color-ink-soft);
  line-height: 1.7;
  padding-top: 12px;
  border-top: 1px dashed var(--color-line);
}

.update-list-section {
  padding: 34px 0;
  border-bottom: 1px solid var(--color-line);
}

.update-group {
  margin-bottom: var(--gap-l);
}

.update-group-date {
  font-size: 15px;
  padding-bottom: 8px;
  margin-bottom: 10px;
  border-bottom: 1px solid var(--color-line);
}

.update-rows {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.update-row {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--gap-m);
  padding: 10px 14px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-m);
}

.update-row:hover {
  border-color: var(--color-accent);
}

.update-cover img {
  width: 56px;
  height: 56px;
  object-fit: cover;
  border-radius: var(--radius-s);
  border: 1px solid var(--color-line);
}

.update-row-main {
  min-width: 0;
}

.update-row-title {
  font-size: 14px;
  font-weight: 600;
  overflow-wrap: break-word;
}

.update-row-meta {
  font-size: 12.5px;
  color: var(--color-ink-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
}

.meta-genre,
.meta-tag {
  display: inline-block;
}

.time-diff-section,
.change-type-section,
.related-entry-section {
  padding: 34px 0;
  border-bottom: 1px solid var(--color-line);
}

.change-type-section:last-of-type,
.related-entry-section:last-of-type {
  border-bottom: 0;
}

.diff-list,
.change-type-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap-m);
}

.diff-item,
.change-type-item {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-l);
  padding: 16px;
  min-width: 0;
}

.diff-name,
.change-type-name {
  font-size: 15px;
  margin-bottom: 6px;
}

.diff-desc,
.change-type-desc {
  font-size: 13px;
  color: var(--color-ink-soft);
  line-height: 1.7;
}

.related-entry-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap-m);
}

.related-entry-item {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-l);
  padding: 14px 16px;
  min-width: 0;
}

.related-entry-item a {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
}

.related-entry-desc {
  display: block;
  font-size: 12.5px;
  color: var(--color-ink-soft);
  line-height: 1.65;
}

/* ranking-reference */
.ranking-def-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap-m);
}

.def-block {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-l);
  padding: 18px;
  min-width: 0;
}

.def-title {
  font-size: 16px;
  margin-bottom: 8px;
}

.def-text {
  font-size: 13.5px;
  color: var(--color-ink-soft);
  line-height: 1.75;
}

.ranking-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ranking-row {
  display: grid;
  grid-template-columns: 40px 68px minmax(0, 1fr);
  align-items: center;
  gap: var(--gap-m);
  padding: 10px 14px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-m);
}

.ranking-row:hover {
  border-color: var(--color-accent);
}

.rank-index {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-accent-deep);
}

.rank-thumb img {
  width: 68px;
  height: 68px;
  object-fit: cover;
  border-radius: var(--radius-s);
  border: 1px solid var(--color-line);
}

.rank-info {
  min-width: 0;
}

.rank-info .rank-name {
  font-size: 14.5px;
  margin-bottom: 4px;
}

.rank-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  font-size: 12.5px;
  color: var(--color-ink-soft);
}

.rank-tag {
  display: inline-block;
}

.section-ranking-list .section-note {
  margin-bottom: var(--gap-l);
}

.section-ranking-list .section-note:last-child {
  margin-top: var(--gap-l);
  margin-bottom: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
}

.tips-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--gap-m);
}

.tip-block {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-l);
  padding: 16px;
  min-width: 0;
}

.tip-title {
  font-size: 14.5px;
  margin-bottom: 6px;
}

.tip-text {
  font-size: 13px;
  color: var(--color-ink-soft);
  line-height: 1.7;
}

/* field-guide */
.field-visual {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--gap-xl);
  align-items: start;
  padding: 34px 0;
  border-bottom: 1px solid var(--color-line);
}

.field-visual-media,
.field-visual-text {
  min-width: 0;
}

.field-visual-media .media-figure {
  margin-bottom: 0;
}

.field-visual-text .section-title {
  margin-bottom: 12px;
}

.field-visual-text p {
  font-size: 14px;
  color: var(--color-ink-soft);
  line-height: 1.75;
  margin-bottom: 12px;
}

.field-visual-text p:last-child {
  margin-bottom: 0;
}

.field-table-section,
.scope-section,
.missing-section,
.proof-section {
  padding: 34px 0;
  border-bottom: 1px solid var(--color-line);
}

.proof-section {
  border-bottom: 0;
}

.scope-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap-m);
}

.scope-item {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-l);
  padding: 16px;
  min-width: 0;
}

.scope-name {
  font-size: 15px;
  margin-bottom: 6px;
}

.scope-item p {
  font-size: 13px;
  color: var(--color-ink-soft);
  line-height: 1.7;
}

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

.missing-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-top: 3px solid var(--color-warn);
  border-radius: var(--radius-l);
  padding: 16px;
  min-width: 0;
}

.missing-name {
  font-size: 15px;
  margin-bottom: 8px;
}

.missing-when {
  font-size: 13px;
  color: var(--color-ink-soft);
  line-height: 1.7;
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--color-line);
}

.missing-how {
  font-size: 13px;
  color: var(--color-ink);
  line-height: 1.7;
}

.proof-steps {
  display: flex;
  flex-direction: column;
  gap: var(--gap-m);
}

.proof-step {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: var(--gap-m);
  align-items: start;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-l);
  padding: 16px;
}

.proof-index {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(230, 160, 184, 0.2);
  border: 1px solid var(--color-accent);
  color: var(--color-accent-deep);
  font-size: 14px;
  font-weight: 600;
}

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

.proof-name {
  font-size: 15px;
  margin-bottom: 6px;
}

.proof-body p {
  font-size: 13.5px;
  color: var(--color-ink-soft);
  line-height: 1.75;
}

.proof-tail {
  margin-top: var(--gap-l);
  font-size: 13px;
  color: var(--color-ink-soft);
}

.proof-tail a {
  color: var(--color-accent-deep);
}

/* reading-path */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--gap-m);
}

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

.step-index {
  font-size: 12px;
  color: var(--color-accent-deep);
  font-weight: 600;
  margin-bottom: 6px;
}

.step-title {
  font-size: 15px;
  margin-bottom: 8px;
}

.step-desc {
  font-size: 13px;
  color: var(--color-ink-soft);
  line-height: 1.7;
  flex: 1 1 auto;
}

.step-link {
  margin-top: 12px;
  font-size: 13px;
}

.step-link a {
  color: var(--color-accent-deep);
  font-weight: 600;
}

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

.scenario-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-l);
  padding: 18px;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.scenario-title {
  font-size: 16px;
  margin-bottom: 6px;
}

.scenario-audience {
  font-size: 12.5px;
  color: var(--color-ink-soft);
  padding-bottom: 10px;
  margin-bottom: 10px;
  border-bottom: 1px dashed var(--color-line);
}

.scenario-steps {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  counter-reset: scenario;
}

.scenario-steps li {
  position: relative;
  padding-left: 24px;
  font-size: 13px;
  color: var(--color-ink-soft);
  line-height: 1.7;
  counter-increment: scenario;
}

.scenario-steps li::before {
  content: counter(scenario);
  position: absolute;
  left: 0;
  top: 3px;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 1px solid var(--color-line-strong);
  color: var(--color-ink-soft);
  font-size: 11px;
  line-height: 15px;
  text-align: center;
}

.scenario-link {
  margin-top: 14px;
  font-size: 13px;
}

.scenario-link a {
  color: var(--color-accent-deep);
  font-weight: 600;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-l);
  overflow: hidden;
}

.faq-item[open] {
  border-color: var(--color-accent);
}

.faq-question {
  cursor: pointer;
  padding: 14px 44px 14px 16px;
  font-size: 14.5px;
  font-weight: 600;
  position: relative;
  list-style: none;
  min-height: 44px;
  display: flex;
  align-items: center;
}

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

.faq-question::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 18px;
  font-weight: 400;
  color: var(--color-accent-deep);
  line-height: 1;
}

.faq-item[open] .faq-question::after {
  content: "−";
}

.faq-question:hover {
  background: rgba(230, 160, 184, 0.08);
}

.faq-answer {
  padding: 0 16px 16px;
  font-size: 13.5px;
  color: var(--color-ink-soft);
  line-height: 1.75;
  border-top: 1px dashed var(--color-line);
  padding-top: 12px;
}

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

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

.feedback-title {
  font-size: 15px;
  margin-bottom: 8px;
}

.feedback-desc {
  font-size: 13px;
  color: var(--color-ink-soft);
  line-height: 1.7;
  flex: 1 1 auto;
}

.feedback-link {
  margin-top: 12px;
  font-size: 13px;
}

.feedback-link a {
  color: var(--color-accent-deep);
  font-weight: 600;
}

/* ============ pages: 404 ============ */
.error-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 48px 20px 56px;
}

.error-hero {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-l);
  padding: 34px 28px;
  box-shadow: var(--shadow-s);
  margin-bottom: var(--gap-xl);
}

.error-code {
  font-size: 13px;
  color: var(--color-accent-deep);
  margin-bottom: 10px;
}

.error-title {
  font-size: 30px;
  line-height: 1.35;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 14px;
  color: var(--color-ink-soft);
  max-width: 720px;
  margin-bottom: var(--gap-l);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 20px;
  border-radius: var(--radius-m);
  border: 1px solid var(--color-line-strong);
  font-size: 14px;
  font-weight: 600;
  background: var(--color-surface);
  color: var(--color-ink);
}

.btn-primary {
  background: var(--color-accent);
  border-color: var(--color-accent-deep);
  color: var(--color-ink);
}

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

.btn-ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent-deep);
}

.error-paths .section-title {
  margin-bottom: var(--gap-m);
}

.error-path-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap-m);
}

.error-path-item {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-l);
  padding: 16px;
  min-width: 0;
}

.error-path-item a {
  display: block;
  font-size: 14.5px;
  font-weight: 600;
  margin-bottom: 6px;
}

.error-path-item p {
  font-size: 13px;
  color: var(--color-ink-soft);
  line-height: 1.7;
}

/* ============ responsive ============ */
@media (max-width: 1100px) {
  .genre-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

@media (max-width: 900px) {
  .header-inner {
    flex-wrap: wrap;
    padding: 10px 16px;
    gap: 10px;
  }

  .nav-toggle {
    display: flex;
    margin-left: auto;
  }

  .header-current {
    order: 3;
  }

  .site-nav {
    order: 4;
    flex: 1 1 100%;
    justify-content: flex-start;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
    border-top: 1px solid var(--color-line);
    padding-top: 6px;
  }

  .nav-list.is-open {
    display: flex;
  }

  .nav-link {
    padding: 12px 8px;
    border-bottom: 1px solid var(--color-line);
    border-radius: 0;
    font-size: 15px;
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  .nav-link.is-current {
    border-bottom-color: var(--color-line);
    background: rgba(230, 160, 184, 0.12);
  }

  .home-main,
  .inner-main,
  .error-main {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero-inner,
  .cover-update-layout,
  .rank-field-layout,
  .field-visual {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--gap-l);
  }

  .hero-side {
    order: 2;
  }

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

  .cover-grid,
  .entry-grid,
  .direction-grid,
  .rule-list,
  .missing-grid,
  .scenario-grid,
  .feedback-grid,
  .error-path-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--gap-l);
    padding: 28px 16px 18px;
  }

  .footer-nav {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--gap-m);
  }

  .footer-bottom {
    padding: 14px 16px 22px;
  }

  .page-title {
    font-size: 26px;
  }
}

@media (max-width: 600px) {
  body {
    font-size: 14.5px;
  }

  .brand-sub {
    display: none;
  }

  .header-current {
    font-size: 11.5px;
  }

  .page-title {
    font-size: 23px;
  }

  .error-title {
    font-size: 23px;
  }

  .section-title {
    font-size: 18px;
  }

  .hero-section {
    padding: 24px 0 30px;
  }

  .hero-figure img {
    height: 190px;
  }

  .genre-grid,
  .cover-grid,
  .entry-grid,
  .direction-grid,
  .rule-list,
  .missing-grid,
  .scenario-grid,
  .feedback-grid,
  .error-path-list,
  .diff-list,
  .change-type-list,
  .related-entry-list,
  .scope-list,
  .ranking-def-grid,
  .tips-grid,
  .steps-grid,
  .index-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .cover-link img,
  .entry-cover img {
    height: 176px;
  }

  .update-row {
    grid-template-columns: 48px minmax(0, 1fr);
    row-gap: 8px;
  }

  .update-cover img {
    width: 48px;
    height: 48px;
  }

  .update-row .status-tag {
    grid-column: 2 / 3;
    justify-self: start;
  }

  .ranking-row {
    grid-template-columns: 32px 56px minmax(0, 1fr);
    gap: 12px;
    padding: 10px;
  }

  .rank-thumb img {
    width: 56px;
    height: 56px;
  }

  .batch-row {
    grid-template-columns: 40px minmax(0, 1fr);
    row-gap: 6px;
  }

  .batch-thumb {
    width: 40px;
    height: 40px;
  }

  .batch-row .status-tag {
    grid-column: 2 / 3;
    justify-self: start;
  }

  .rank-row {
    grid-template-columns: 28px minmax(0, 1fr);
    row-gap: 4px;
  }

  .rank-row .rank-genre {
    grid-column: 2 / 3;
    justify-self: start;
  }

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

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

  .batch-status-card .status-tag {
    justify-self: start;
  }

  .page-pager,
  .post-nav {
    grid-template-columns: minmax(0, 1fr);
  }

  .pager-next,
  .post-nav-next {
    text-align: left;
  }

  .media-block img,
  .section-figure img,
  .ranking-figure img,
  .flow-figure img,
  .media-figure img {
    height: 190px;
  }

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

  .footer-bottom {
    flex-direction: column;
  }
}

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

  .cover-link,
  .entry-card {
    transition: none;
  }
}