:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --ink: #1c2b3a;
  --ink-soft: #45505c;
  --ink-mute: #6b7785;
  --line: #dde2e8;
  --line-soft: #e9edf1;
  --brand: #3f6fb5;
  --brand-deep: #2d5389;
  --brand-soft: #eaf0f9;
  --accent: #e08a3c;
  --accent-soft: #fdf2e6;
  --radius: 8px;
  --radius-sm: 5px;
  --container: 1080px;
  --shadow-1: 0 1px 2px rgba(28, 43, 58, 0.06);
  --shadow-2: 0 6px 18px rgba(28, 43, 58, 0.12);
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "SFMono-Regular", "JetBrains Mono", Consolas, "Liberation Mono", Menlo, monospace;
}

/* base */

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink-soft);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.75;
  font-weight: 400;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--ink);
  font-weight: 600;
  line-height: 1.35;
}

p {
  margin: 0;
}

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

dl,
dd,
dt,
figure,
figcaption {
  margin: 0;
}

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

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

img {
  display: block;
  max-width: 100%;
  height: auto;
  border: 0;
}

button {
  font: inherit;
  color: inherit;
}

time {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

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

/* layout */

.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--ink-soft);
}

.site-main {
  flex: 1 1 auto;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px 56px;
}

.inner-main {
  padding-top: 20px;
}

.home-main {
  padding-top: 0;
}

.site-notice {
  background: var(--ink);
  color: #e8edf3;
  font-size: 13px;
  line-height: 1.6;
  text-align: center;
  padding: 8px 20px;
}

.site-notice strong {
  color: #ffffff;
  font-weight: 600;
}

/* header */

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

.header-inner {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
  min-height: 62px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 600;
  flex: 0 0 auto;
  min-height: 44px;
}

.brand:hover {
  color: var(--brand);
}

.brand-mark {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-sm);
  background: var(--brand);
  color: #ffffff;
  font-size: 13px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0;
}

.brand-name {
  line-height: 1.2;
}

.site-nav {
  margin-left: auto;
}

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

.nav-list li {
  display: block;
}

.nav-list a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 12px;
  color: var(--ink-soft);
  font-size: 14px;
  border-bottom: 2px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.nav-list a:hover {
  color: var(--brand);
}

.nav-list a.is-current {
  color: var(--brand);
  font-weight: 600;
  border-bottom-color: var(--brand);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  margin-left: auto;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--card);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

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

/* breadcrumb */

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--ink-mute);
  padding: 4px 0 14px;
}

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

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

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

.breadcrumb-current {
  color: var(--ink);
  font-weight: 600;
}

/* page header */

.page-header {
  padding: 4px 0 26px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 30px;
}

.page-title {
  font-size: 30px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 12px;
}

.page-description {
  font-size: 15px;
  color: var(--ink-soft);
  max-width: 760px;
}

.page-description a {
  color: var(--brand);
}

.page-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin-top: 18px;
}

.meta-item,
.page-meta-item {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 13px;
}

.meta-item dt,
.page-meta-item dt {
  color: var(--ink-mute);
}

.meta-item dd,
.page-meta-item dd {
  color: var(--ink);
  font-weight: 600;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* sections shared */

.section {
  margin-bottom: 44px;
}

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

.section-title,
.section-head h2 {
  font-size: 22px;
  color: var(--ink);
}

.section-lead,
.section-intro {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-mute);
  max-width: 820px;
}

.section-lead a,
.section-intro a {
  color: var(--brand);
}

.section-more {
  margin-top: 16px;
  font-size: 14px;
}

.section-more a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
}

.section-more a::after {
  content: "→";
  font-size: 13px;
}

.section-footnote {
  margin-top: 18px;
  font-size: 13px;
  color: var(--ink-mute);
}

/* footer */

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

.footer-inner {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 40px 20px 24px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px 28px;
}

.footer-brand-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 10px;
}

.footer-brand-desc {
  font-size: 13px;
  color: var(--ink-mute);
  max-width: 320px;
  line-height: 1.7;
}

.footer-group-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 12px;
}

.footer-list li + li {
  margin-top: 8px;
}

.footer-list a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  font-size: 13px;
  color: var(--ink-soft);
}

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

.footer-bottom {
  max-width: var(--container);
  margin: 0 auto;
  padding: 16px 20px 28px;
  border-top: 1px solid var(--line-soft);
  font-size: 12px;
  color: var(--ink-mute);
  line-height: 1.7;
}

/* components: hero */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 36px;
  align-items: start;
  padding: 40px 0 44px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 44px;
}

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

.hero-eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--brand);
  background: var(--brand-soft);
  border-radius: var(--radius-sm);
  padding: 4px 10px;
  margin-bottom: 14px;
}

.hero-title {
  font-size: 34px;
  line-height: 1.3;
  margin-bottom: 14px;
}

.hero-summary {
  font-size: 15px;
  color: var(--ink-soft);
  max-width: 560px;
  margin-bottom: 22px;
}

.hero-entries {
  display: grid;
  gap: 10px;
}

.hero-entry a {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 12px 14px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
  transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.hero-entry a:hover {
  border-color: var(--brand);
  box-shadow: var(--shadow-2);
  transform: translateY(-1px);
}

.entry-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}

.entry-desc {
  font-size: 13px;
  color: var(--ink-mute);
  line-height: 1.65;
}

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

.hero-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--line-soft);
}

.hero-media figcaption {
  margin-top: 10px;
  font-size: 12px;
  color: var(--ink-mute);
  line-height: 1.65;
}

/* components: genre grid (index + genre page) */

.genre-grid {
  display: grid;
  gap: 16px;
}

.genre-overview .genre-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.genre-cell {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.genre-cell:hover {
  border-color: var(--brand);
  box-shadow: var(--shadow-1);
}

.genre-no {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--brand);
  letter-spacing: 0.04em;
}

.genre-name {
  font-size: 17px;
}

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

.genre-sample {
  font-size: 12px;
  color: var(--ink-mute);
  border-top: 1px dashed var(--line);
  padding-top: 10px;
  margin-top: auto;
}

/* components: cover wall */

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

.cover-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.cover-card:hover {
  border-color: var(--brand);
  box-shadow: var(--shadow-2);
  transform: translateY(-2px);
}

.cover-card:hover .cover-status {
  color: var(--brand);
  border-color: var(--brand);
}

.cover-figure {
  width: 100%;
}

.cover-figure img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background: var(--line-soft);
}

.cover-name {
  font-size: 15px;
}

.cover-meta {
  font-size: 12px;
  color: var(--ink-mute);
}

.cover-status {
  align-self: flex-start;
  font-size: 12px;
  color: var(--ink-soft);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 2px 8px;
  transition: color 0.18s ease, border-color 0.18s ease;
}

/* components: board (updates + ranking side by side) */

.board-columns {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.board-col {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  min-width: 0;
}

.board-col-title {
  font-size: 17px;
  padding-bottom: 12px;
  margin-bottom: 6px;
  border-bottom: 1px solid var(--line-soft);
}

.board-col-more {
  margin-top: 14px;
  font-size: 13px;
}

.board-col-more a {
  font-weight: 600;
}

.update-list {
  display: block;
}

.update-row {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr) auto;
  gap: 4px 12px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px dashed var(--line-soft);
}

.update-row:last-child {
  border-bottom: 0;
}

.update-date {
  font-size: 12px;
  color: var(--ink-mute);
}

.update-name {
  font-size: 14px;
  color: var(--ink);
  font-weight: 600;
  min-width: 0;
}

.update-genre {
  font-size: 12px;
  color: var(--brand);
  background: var(--brand-soft);
  border-radius: var(--radius-sm);
  padding: 1px 8px;
  white-space: nowrap;
}

.update-note {
  grid-column: 2 / -1;
  font-size: 12px;
  color: var(--ink-mute);
  line-height: 1.65;
}

.rank-list {
  counter-reset: rank;
}

.rank-row {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) auto;
  gap: 4px 12px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px dashed var(--line-soft);
}

.rank-row:last-child {
  border-bottom: 0;
}

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

.rank-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  min-width: 0;
}

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

.rank-note {
  grid-column: 2 / -1;
  font-size: 12px;
  color: var(--ink-mute);
  line-height: 1.65;
}

/* components: field summary (index) */

.field-columns {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.field-col {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  min-width: 0;
}

.field-col-title {
  font-size: 17px;
  padding-bottom: 12px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--line-soft);
}

.field-list {
  display: block;
}

.field-list dt {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  margin-top: 14px;
}

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

.field-list dd {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.7;
  margin-top: 4px;
}

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

.boundary-item {
  position: relative;
  padding-left: 18px;
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.7;
}

.boundary-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.field-col-more {
  margin-top: 16px;
  font-size: 13px;
}

.field-col-more a {
  font-weight: 600;
}

/* components: site index grid */

.index-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
}

.index-cell {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 12px;
  color: var(--ink);
  min-height: 96px;
  transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.index-cell:hover {
  border-color: var(--brand);
  box-shadow: var(--shadow-1);
  transform: translateY(-1px);
  color: var(--ink);
}

.index-no {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--brand);
}

.index-name {
  font-size: 14px;
  font-weight: 600;
}

.index-desc {
  font-size: 12px;
  color: var(--ink-mute);
  line-height: 1.6;
}

/* pages: genre */

.page-genre .intro-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.page-genre .intro-block {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--brand);
  border-radius: var(--radius);
  padding: 16px;
  min-width: 0;
}

.page-genre .intro-block-title {
  font-size: 15px;
  margin-bottom: 8px;
}

.page-genre .intro-block p {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.7;
}

.page-genre .section-genre-catalog .genre-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.page-genre .genre-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.page-genre .genre-card:hover {
  border-color: var(--brand);
  box-shadow: var(--shadow-1);
}

.page-genre .genre-card-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-genre .genre-index {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--brand);
}

.page-genre .genre-card-title {
  font-size: 17px;
}

.page-genre .genre-card-desc {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.page-genre .genre-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-genre .genre-tags li {
  font-size: 12px;
  color: var(--ink-soft);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 2px 9px;
}

.page-genre .genre-card-link {
  align-self: flex-start;
  font-size: 13px;
  font-weight: 600;
  margin-top: auto;
}

.page-genre .works-group {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.page-genre .works-group-title {
  grid-column: 1 / -1;
  font-size: 17px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-soft);
}

.page-genre .works-figure {
  min-width: 0;
}

.page-genre .works-figure img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background: var(--line-soft);
}

.page-genre .works-figure figcaption {
  margin-top: 8px;
  font-size: 12px;
  color: var(--ink-mute);
  line-height: 1.6;
}

.page-genre .works-list {
  display: grid;
  gap: 10px;
  min-width: 0;
}

.page-genre .works-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 4px 14px;
  align-items: baseline;
  padding: 12px 14px;
  background: var(--bg);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
}

.page-genre .works-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  min-width: 0;
}

.page-genre .works-genre {
  font-size: 12px;
  color: var(--brand);
  white-space: nowrap;
}

.page-genre .works-status {
  font-size: 12px;
  color: var(--ink-mute);
  white-space: nowrap;
}

.page-genre .section-genre-boundary .boundary-list {
  gap: 14px;
}

.page-genre .boundary-item-title {
  font-size: 15px;
  margin-bottom: 4px;
}

.page-genre .boundary-note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--ink-mute);
}

/* pages: updates */

.page-updates .scope-body {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}

.page-updates .scope-body .section-lead {
  margin-top: 0;
}

.page-updates .scope-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.page-updates .scope-item {
  border-top: 1px solid var(--line-soft);
  padding-top: 14px;
  min-width: 0;
}

.page-updates .scope-item-title {
  font-size: 15px;
  margin-bottom: 6px;
}

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

.page-updates .update-list {
  display: grid;
  gap: 12px;
}

.page-updates .update-row {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 0 18px;
  align-items: start;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 18px;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.page-updates .update-row:hover {
  border-color: var(--brand);
  box-shadow: var(--shadow-1);
}

.page-updates .update-thumb {
  grid-row: 1 / span 3;
  width: 96px;
}

.page-updates .update-thumb img {
  width: 96px;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background: var(--line-soft);
}

.page-updates .update-row-main {
  grid-column: 2;
  display: grid;
  gap: 4px;
  min-width: 0;
}

.page-updates .update-date {
  font-size: 12px;
  color: var(--ink-mute);
}

.page-updates .update-work {
  font-size: 15px;
}

.page-updates .update-genre {
  font-size: 12px;
  color: var(--brand);
}

.page-updates .update-note {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.7;
}

.page-updates .field-list {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 8px 22px;
  margin-bottom: 20px;
}

.page-updates .field-row {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-updates .field-row:last-child {
  border-bottom: 0;
}

.page-updates .field-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}

.page-updates .field-desc {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.7;
  min-width: 0;
}

.page-updates .tag-explain {
  background: var(--accent-soft);
  border: 1px solid #f2ddc2;
  border-radius: var(--radius);
  padding: 20px;
}

.page-updates .tag-explain-title {
  font-size: 16px;
  margin-bottom: 12px;
}

.page-updates .tag-explain-list {
  display: grid;
  gap: 10px;
}

.page-updates .tag-explain-item {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.7;
}

.page-updates .tag-chip {
  font-size: 12px;
  font-weight: 600;
  color: #8a5119;
  background: #ffffff;
  border: 1px solid #f2ddc2;
  border-radius: var(--radius-sm);
  padding: 2px 8px;
  text-align: center;
}

/* pages: ranking */

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

.page-ranking .scope-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.page-ranking .scope-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-top: 3px solid var(--brand);
  border-radius: var(--radius);
  padding: 16px;
  min-width: 0;
}

.page-ranking .scope-card-title {
  font-size: 15px;
  margin-bottom: 8px;
}

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

.page-ranking .ranking-list {
  display: grid;
  gap: 12px;
}

.page-ranking .ranking-item {
  display: grid;
  grid-template-columns: 44px 84px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 18px;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.page-ranking .ranking-item:hover {
  border-color: var(--brand);
  box-shadow: var(--shadow-1);
}

.page-ranking .ranking-position {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  color: var(--accent);
  line-height: 1.2;
  padding-top: 6px;
}

.page-ranking .ranking-cover {
  width: 84px;
}

.page-ranking .ranking-cover img {
  width: 84px;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background: var(--line-soft);
}

.page-ranking .ranking-body {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.page-ranking .ranking-name {
  font-size: 15px;
}

.page-ranking .ranking-genre {
  font-size: 12px;
  color: var(--brand);
}

.page-ranking .ranking-note {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.7;
}

.page-ranking .ranking-footnote {
  margin-top: 16px;
  font-size: 13px;
  color: var(--ink-mute);
}

.page-ranking .limits-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.page-ranking .limits-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  min-width: 0;
}

.page-ranking .limits-card-title {
  font-size: 15px;
  margin-bottom: 8px;
}

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

.page-ranking .limits-note {
  margin-top: 18px;
  background: var(--brand-soft);
  border: 1px solid #d3e0f3;
  border-radius: var(--radius);
  padding: 18px 20px;
}

.page-ranking .limits-note-title {
  font-size: 15px;
  margin-bottom: 8px;
}

.page-ranking .limits-note-text {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.page-ranking .limits-note-text + .limits-note-text {
  margin-top: 8px;
}

/* pages: field-notes */

.page-field-notes .field-intro {
  margin-bottom: 44px;
}

.page-field-notes .field-intro h2 {
  font-size: 22px;
  margin-bottom: 12px;
}

.page-field-notes .field-intro-text {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.8;
  max-width: 860px;
}

.page-field-notes .field-figure {
  margin: 22px 0;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
}

.page-field-notes .field-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background: var(--line-soft);
}

.page-field-notes .field-figure figcaption {
  margin-top: 10px;
  font-size: 12px;
  color: var(--ink-mute);
  line-height: 1.65;
}

.page-field-notes .field-def-list {
  display: grid;
  gap: 0;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 4px 22px;
}

.page-field-notes .field-def {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-field-notes .field-def:last-child {
  border-bottom: 0;
}

.page-field-notes .field-def-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.page-field-notes .field-def-body {
  min-width: 0;
}

.page-field-notes .field-def-desc {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.page-field-notes .field-def-range {
  margin-top: 6px;
  font-size: 12px;
  color: var(--ink-mute);
  font-family: var(--font-mono);
  line-height: 1.7;
}

.page-field-notes .scope-section {
  margin-bottom: 44px;
}

.page-field-notes .scope-section h2 {
  font-size: 22px;
  margin-bottom: 16px;
}

.page-field-notes .scope-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.page-field-notes .scope-text {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  min-width: 0;
}

.page-field-notes .scope-text p {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.page-field-notes .scope-text p + p {
  margin-top: 12px;
}

.page-field-notes .scope-aside {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  min-width: 0;
}

.page-field-notes .scope-aside-title {
  font-size: 16px;
  padding-bottom: 10px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--line-soft);
}

.page-field-notes .scope-aside .scope-list {
  display: grid;
  gap: 10px;
}

.page-field-notes .scope-aside .scope-list li {
  position: relative;
  padding-left: 18px;
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.7;
}

.page-field-notes .scope-aside .scope-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand);
}

.page-field-notes .scope-link {
  margin-top: 16px;
  font-size: 13px;
  font-weight: 600;
}

.page-field-notes .faq-section {
  margin-bottom: 44px;
}

.page-field-notes .faq-section h2 {
  font-size: 22px;
}

.page-field-notes .faq-intro {
  margin: 8px 0 18px;
  font-size: 14px;
  color: var(--ink-mute);
}

.page-field-notes .related-section h2 {
  font-size: 22px;
  margin-bottom: 16px;
}

.page-field-notes .related-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-field-notes .related-item a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  min-height: 44px;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.page-field-notes .related-item a:hover {
  border-color: var(--brand);
  box-shadow: var(--shadow-1);
}

.page-field-notes .related-desc {
  font-size: 12px;
  font-weight: 400;
  color: var(--ink-mute);
  line-height: 1.65;
}

/* faq (shared by field-notes + reading-guide) */

.faq-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 10px;
  overflow: hidden;
}

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

.faq-question {
  list-style: none;
  cursor: pointer;
  padding: 14px 44px 14px 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  position: relative;
  min-height: 44px;
  display: flex;
  align-items: center;
}

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

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

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

.faq-answer {
  padding: 0 18px 16px;
  border-top: 1px solid var(--line-soft);
  padding-top: 14px;
}

.faq-answer p {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.faq-answer p + p {
  margin-top: 8px;
}

.faq-related {
  font-size: 12px;
  color: var(--ink-mute);
}

.faq-related a {
  font-weight: 600;
}

/* pages: reading-guide */

.page-reading-guide .page-layout {
  display: block;
}

.page-reading-guide .guide-paths,
.page-reading-guide .guide-steps,
.page-reading-guide .guide-faq,
.page-reading-guide .guide-combo {
  margin-bottom: 44px;
}

.page-reading-guide .path-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.page-reading-guide .path-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.page-reading-guide .path-card:hover {
  border-color: var(--brand);
  box-shadow: var(--shadow-1);
}

.page-reading-guide .path-index {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--brand);
  letter-spacing: 0.04em;
}

.page-reading-guide .path-name {
  font-size: 17px;
}

.page-reading-guide .path-scene,
.page-reading-guide .path-result {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.7;
}

.page-reading-guide .path-result {
  color: var(--ink-mute);
  border-top: 1px dashed var(--line);
  padding-top: 10px;
}

.page-reading-guide .path-entry {
  align-self: flex-start;
  font-size: 13px;
  font-weight: 600;
  margin-top: auto;
}

.page-reading-guide .guide-figure {
  margin: 18px 0 22px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
}

.page-reading-guide .guide-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background: var(--line-soft);
}

.page-reading-guide .guide-figure figcaption {
  margin-top: 10px;
  font-size: 12px;
  color: var(--ink-mute);
  line-height: 1.65;
}

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

.page-reading-guide .step-column {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  min-width: 0;
}

.page-reading-guide .step-column-title {
  font-size: 16px;
  padding-bottom: 10px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--line-soft);
}

.page-reading-guide .step-list {
  display: grid;
  gap: 14px;
}

.page-reading-guide .step-item {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  min-width: 0;
}

.page-reading-guide .step-num {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--brand-soft);
  color: var(--brand);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.page-reading-guide .step-text {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.7;
  min-width: 0;
}

.page-reading-guide .step-text a {
  font-weight: 600;
}

.page-reading-guide .faq-list {
  margin-top: 18px;
}

.page-reading-guide .combo-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.page-reading-guide .combo-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 18px 20px;
  min-width: 0;
}

.page-reading-guide .combo-title {
  font-size: 16px;
  margin-bottom: 8px;
}

.page-reading-guide .combo-text {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.page-reading-guide .guide-note {
  margin-top: 18px;
  font-size: 13px;
  color: var(--ink-mute);
}

/* pages: 404 */

.site-error .error-main {
  padding-top: 40px;
}

.error-panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 40px 32px;
  text-align: center;
  margin-bottom: 36px;
}

.error-code {
  font-family: var(--font-mono);
  font-size: 44px;
  font-weight: 600;
  color: var(--brand);
  line-height: 1;
  margin-bottom: 14px;
}

.error-panel h1 {
  font-size: 26px;
  margin-bottom: 12px;
}

.error-text {
  font-size: 14px;
  color: var(--ink-soft);
  max-width: 560px;
  margin: 0 auto;
}

.error-paths {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin: 22px 0;
}

.error-paths a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
}

.error-paths a:hover {
  border-color: var(--brand);
  color: var(--brand);
}

.error-action {
  margin-top: 4px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.18s ease, color 0.18s ease;
}

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

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

.error-index h2 {
  font-size: 20px;
  margin-bottom: 16px;
}

.error-index-list {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.error-index-list a {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  padding: 10px 12px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  text-align: center;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.error-index-list a:hover {
  border-color: var(--brand);
  box-shadow: var(--shadow-1);
  color: var(--brand);
}

/* motion */

@media (prefers-reduced-motion: no-preference) {
  .hero-text,
  .hero-media,
  .section-head,
  .genre-cell,
  .cover-card,
  .board-col,
  .field-col,
  .index-cell {
    animation: rise-in 0.42s ease both;
  }

  .cover-card:nth-child(3n + 2) {
    animation-delay: 0.05s;
  }

  .cover-card:nth-child(3n + 3) {
    animation-delay: 0.1s;
  }
}

@keyframes rise-in {
  from {
    transform: translateY(8px);
  }
  to {
    transform: translateY(0);
  }
}

/* responsive */

@media (max-width: 960px) {
  .header-inner {
    flex-wrap: wrap;
    gap: 0;
    padding: 0 16px;
  }

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

  .site-nav {
    width: 100%;
    margin-left: 0;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px 0 12px;
    border-top: 1px solid var(--line-soft);
  }

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

  .nav-list a {
    min-height: 46px;
    padding: 0 4px;
    border-bottom: 0;
    border-left: 2px solid transparent;
    padding-left: 10px;
  }

  .nav-list a.is-current {
    border-bottom-color: transparent;
    border-left-color: var(--brand);
    background: var(--brand-soft);
    border-radius: var(--radius-sm);
  }

  .site-main {
    padding: 0 16px 44px;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
    padding: 28px 0 34px;
    margin-bottom: 34px;
  }

  .hero-media {
    order: -1;
  }

  .hero-title {
    font-size: 28px;
  }

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

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

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

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

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

  .page-genre .section-genre-catalog .genre-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-genre .works-group {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-genre .works-figure {
    max-width: 200px;
  }

  .page-updates .scope-list {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

  .page-field-notes .scope-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-reading-guide .path-grid,
  .page-reading-guide .step-columns {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-reading-guide .combo-list {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding: 32px 16px 20px;
  }

  .footer-bottom {
    padding: 14px 16px 24px;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 14px;
  }

  .site-notice {
    font-size: 12px;
    text-align: left;
  }

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

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

  .section-title,
  .section-head h2 {
    font-size: 19px;
  }

  .hero-entry a {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

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

  .cover-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .cover-card {
    padding: 10px;
  }

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

  .index-cell {
    min-height: 84px;
  }

  .update-row {
    grid-template-columns: 78px minmax(0, 1fr);
  }

  .update-genre {
    grid-column: 2;
    justify-self: start;
  }

  .rank-row {
    grid-template-columns: 26px minmax(0, 1fr);
  }

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

  .page-updates .update-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
  }

  .page-updates .update-thumb {
    grid-row: auto;
  }

  .page-updates .update-row-main {
    grid-column: 1;
  }

  .page-updates .field-row,
  .page-field-notes .field-def {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .page-updates .tag-explain-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .page-updates .tag-chip {
    justify-self: start;
  }

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

  .page-ranking .ranking-item {
    grid-template-columns: 36px 68px minmax(0, 1fr);
    gap: 12px;
    padding: 12px 14px;
  }

  .page-ranking .ranking-cover,
  .page-ranking .ranking-cover img {
    width: 68px;
  }

  .page-ranking .ranking-position {
    font-size: 17px;
  }

  .page-genre .works-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .page-field-notes .related-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .error-panel {
    padding: 30px 18px;
  }

  .error-code {
    font-size: 36px;
  }

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

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