:root {
  --paper: #f7f7f5;
  --ink: #1c1c1c;
  --graphite: #5a5a5a;
  --line: #d8d5cf;
  --red: #c8362f;
  --blue: #2f5d8a;
  --yellow: #d9a441;
  --surface: #ffffff;
  --surface-soft: #f1f0ec;
  --radius: 6px;
  --wrap: 1180px;
  --gap: 24px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", Arial, sans-serif;
  --font-mono: "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, "Courier New", monospace;
}

/* ==========================================================================
   base
   ========================================================================== */

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

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

body.site-body {
  margin: 0;
  padding: 0;
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
}

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

p {
  margin: 0;
}

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

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

a:hover {
  color: var(--red);
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

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

figure {
  margin: 0;
}

figcaption {
  color: var(--graphite);
  font-size: 13px;
  line-height: 1.6;
}

button {
  font-family: inherit;
}

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

.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;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  z-index: 60;
  padding: 10px 16px;
  background-color: var(--ink);
  color: #fff;
  border-radius: var(--radius);
  font-size: 14px;
}

.skip-link:focus {
  top: 12px;
  color: #fff;
}

/* ==========================================================================
   layout · shell
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: var(--surface);
  border-bottom: 2px solid var(--ink);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 14px 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  padding: 6px 14px 6px 12px;
  border-left: 6px solid var(--red);
  background-color: var(--ink);
  color: #fff;
  font-size: 19px;
  font-weight: 600;
  line-height: 1.2;
}

.brand:hover {
  color: #fff;
  background-color: var(--blue);
}

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

.nav-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  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);
  font-size: 15px;
  border-bottom: 2px solid transparent;
}

.nav-list a:hover {
  color: var(--red);
  border-bottom-color: var(--red);
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  background-color: var(--surface);
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--ink);
}

.site-main {
  display: block;
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}

.inner-main {
  padding-top: 20px;
  padding-bottom: 64px;
}

.site-footer {
  margin-top: 64px;
  background-color: var(--ink);
  color: #e9e7e2;
  border-top: 2px solid var(--ink);
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(220px, 1.4fr) repeat(3, minmax(150px, 1fr));
  gap: 32px;
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 44px 24px 28px;
}

.footer-brand-name {
  margin-bottom: 10px;
  color: #fff;
  font-size: 18px;
  font-weight: 600;
}

.footer-brand-desc {
  color: #b9b6b0;
  font-size: 14px;
  line-height: 1.7;
}

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

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

.footer-list a {
  display: inline-block;
  min-height: 28px;
  color: #dedbd5;
  font-size: 14px;
}

.footer-list a:hover {
  color: #fff;
  text-decoration: underline;
}

.footer-copy {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 16px 24px 28px;
  border-top: 1px solid #3a3a38;
  color: #8f8d88;
  font-size: 13px;
}

/* ==========================================================================
   layout · inner page shell
   ========================================================================== */

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin: 4px 0 18px;
  color: var(--graphite);
  font-size: 13px;
}

.breadcrumb a {
  color: var(--graphite);
  border-bottom: 1px solid var(--line);
}

.breadcrumb a:hover {
  color: var(--red);
  border-bottom-color: var(--red);
}

.breadcrumb-sep {
  color: #a9a6a0;
}

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

.page-header {
  padding: 0 0 22px;
  margin-bottom: 28px;
  border-bottom: 3px solid var(--ink);
}

.page-title {
  font-size: 32px;
  font-weight: 600;
  color: var(--ink);
}

.page-description {
  max-width: 860px;
  margin-top: 12px;
  color: var(--graphite);
  font-size: 15px;
}

.page-lead {
  max-width: 860px;
  margin-top: 10px;
  color: var(--graphite);
  font-size: 15px;
}

.page-intro {
  max-width: 860px;
  margin-top: 10px;
  color: var(--graphite);
  font-size: 15px;
}

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

.fact-item {
  padding: 12px 14px;
  background-color: var(--surface);
  border-left: 4px solid var(--blue);
  border-radius: var(--radius);
}

.fact-item dt {
  color: var(--graphite);
  font-size: 13px;
}

.fact-item dd {
  margin: 4px 0 0;
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
}

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

.meta-item {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 12px;
  background-color: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--graphite);
  font-size: 13px;
}

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}

.layout-shell {
  grid-template-columns: minmax(0, 1fr) minmax(280px, 320px);
  align-items: start;
}

.layout-main {
  min-width: 0;
}

.layout-side,
.layout-aside {
  min-width: 0;
}

.section {
  margin-bottom: 48px;
}

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

.section-head {
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--ink);
}

.section-title {
  font-size: 22px;
  font-weight: 600;
}

.section-desc {
  max-width: 860px;
  margin-top: 8px;
  color: var(--graphite);
  font-size: 14px;
}

.section-note {
  max-width: 860px;
  margin-top: 8px;
  color: var(--graphite);
  font-size: 14px;
}

.section-intro {
  max-width: 860px;
  margin: 8px 0 18px;
  color: var(--graphite);
  font-size: 14px;
}

/* ==========================================================================
   components · shared
   ========================================================================== */

.column-title {
  margin-bottom: 14px;
  padding-left: 10px;
  border-left: 5px solid var(--red);
  font-size: 17px;
  font-weight: 600;
}

.column-foot {
  margin-top: 16px;
  font-size: 14px;
}

.column-foot a {
  display: inline-block;
  min-height: 28px;
  border-bottom: 1px solid var(--line);
}

.column-foot a:hover {
  border-bottom-color: var(--red);
}

.genre-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.genre-card {
  display: flex;
  flex-direction: column;
  padding: 18px 16px;
  background-color: var(--surface);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.genre-card:hover {
  border-color: var(--ink);
}

.genre-name {
  margin-bottom: 8px;
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
}

.genre-scope {
  color: var(--graphite);
  font-size: 14px;
}

.genre-entry {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  font-weight: 600;
}

.genre-entry::after {
  content: " →";
  margin-left: 2px;
}

.cover-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.cover-card {
  background-color: var(--surface);
  border: 2px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

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

.cover-link {
  display: block;
  color: var(--ink);
}

.cover-link:hover {
  color: var(--red);
}

.cover-link img {
  width: 100%;
  aspect-ratio: 3 / 4;
  height: auto;
  object-fit: cover;
  border-bottom: 2px solid var(--line);
}

.cover-name {
  display: block;
  padding: 10px 12px 4px;
  font-size: 15px;
  font-weight: 600;
}

.cover-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 0 12px 12px;
}

.tag-genre,
.tag-status {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0 8px;
  border-radius: var(--radius);
  font-size: 12px;
  line-height: 1.4;
}

.tag-genre {
  background-color: #e6edf4;
  color: var(--blue);
}

.tag-status {
  background-color: #f6ecd8;
  color: #8a6417;
}

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

.step-item {
  display: flex;
  flex-direction: column;
  padding: 20px 18px;
  background-color: var(--surface);
  border-top: 4px solid var(--blue);
  border-radius: var(--radius);
}

.step-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  margin-bottom: 12px;
  background-color: var(--ink);
  color: #fff;
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 15px;
}

.step-title {
  margin-bottom: 8px;
  font-size: 17px;
  font-weight: 600;
}

.step-desc {
  color: var(--graphite);
  font-size: 14px;
}

.step-entry {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  margin-top: 14px;
  font-size: 14px;
  font-weight: 600;
}

.step-entry::after {
  content: " →";
}

.path-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 14px;
}

.index-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 14px;
}

.index-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 92px;
  padding: 14px 12px;
  background-color: var(--surface);
  border: 2px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
}

.index-item:hover {
  border-color: var(--red);
  color: var(--red);
}

.index-name {
  font-size: 15px;
  font-weight: 600;
}

.index-desc {
  color: var(--graphite);
  font-size: 13px;
  line-height: 1.6;
}

.index-item:hover .index-desc {
  color: var(--graphite);
}

/* ==========================================================================
   pages · index
   ========================================================================== */

.fact-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding: 8px 24px;
  background-color: var(--ink);
  color: #dedbd5;
  font-size: 13px;
}

.fact-bar-text {
  min-width: 0;
}

.fact-bar-period {
  padding: 2px 10px;
  background-color: var(--red);
  border-radius: var(--radius);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 12px;
  white-space: nowrap;
}

.home-main {
  padding-top: 32px;
  padding-bottom: 8px;
}

.hero {
  margin-bottom: 48px;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 1fr);
  gap: 32px;
  align-items: start;
  padding-bottom: 28px;
  border-bottom: 3px solid var(--ink);
}

.hero-kicker {
  display: inline-block;
  margin-bottom: 12px;
  padding: 4px 10px;
  background-color: var(--surface-soft);
  border-left: 4px solid var(--red);
  color: var(--graphite);
  font-size: 13px;
}

.hero-lead h1 {
  font-size: 34px;
  font-weight: 600;
}

.hero-summary {
  max-width: 640px;
  margin-top: 14px;
  color: var(--graphite);
  font-size: 15px;
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.hero-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  background-color: var(--surface);
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
}

.hero-links a:hover {
  background-color: var(--red);
  border-color: var(--red);
  color: #fff;
}

.hero-periods {
  padding: 18px;
  background-color: var(--surface);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.hero-periods-title {
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--ink);
  font-size: 16px;
  font-weight: 600;
}

.period-group + .period-group {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
}

.period-group-title {
  margin-bottom: 8px;
  color: var(--graphite);
  font-size: 13px;
  font-weight: 600;
}

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

.period-list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 32px;
  font-size: 14px;
}

.period-tag {
  padding: 1px 8px;
  background-color: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--graphite);
  font-family: var(--font-mono);
  font-size: 12px;
}

.hero-figure {
  margin-top: 26px;
  border: 2px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--surface);
}

.hero-figure img {
  width: 100%;
  aspect-ratio: 16 / 7;
  height: auto;
  object-fit: cover;
}

.hero-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
}

.genre-overview {
  margin-bottom: 48px;
}

.update-cover {
  margin-bottom: 48px;
}

.update-cover-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, 1fr);
  gap: 32px;
  align-items: start;
}

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

.update-list {
  border-top: 1px solid var(--line);
}

.update-item {
  display: grid;
  grid-template-columns: 78px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

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

.update-genre {
  color: var(--graphite);
  font-size: 14px;
}

.update-state {
  padding: 2px 10px;
  background-color: #f6ecd8;
  border-radius: var(--radius);
  color: #8a6417;
  font-size: 12px;
  white-space: nowrap;
}

.rank-field {
  margin-bottom: 48px;
}

.rank-field-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, 1fr);
  gap: 32px;
  align-items: start;
}

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

.rank-list {
  border-top: 1px solid var(--line);
}

.rank-item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) 96px 88px;
  gap: 12px;
  align-items: center;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}

.rank-no {
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
}

.rank-name {
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
}

.rank-name:hover {
  color: var(--red);
}

.rank-genre {
  color: var(--graphite);
  font-size: 13px;
}

.rank-move {
  color: var(--blue);
  font-size: 13px;
  text-align: right;
}

.field-list {
  margin: 0;
  border-top: 1px solid var(--line);
}

.field-name {
  padding-top: 12px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
}

.field-desc {
  margin: 4px 0 0;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  color: var(--graphite);
  font-size: 14px;
}

.path-guide {
  margin-bottom: 48px;
}

.site-index {
  padding-top: 32px;
  border-top: 2px solid var(--ink);
}

/* ==========================================================================
   pages · genre
   ========================================================================== */

.genre-layout {
  grid-template-columns: minmax(0, 1fr) minmax(260px, 300px);
  align-items: start;
}

.genre-directions {
  min-width: 0;
}

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

.genre-card--action {
  border-top: 4px solid var(--red);
}

.genre-card--daily {
  border-top: 4px solid var(--blue);
}

.genre-card--mystery {
  border-top: 4px solid var(--ink);
}

.genre-card--fantasy {
  border-top: 4px solid var(--yellow);
}

.genre-card-name {
  margin-bottom: 10px;
  font-size: 18px;
  font-weight: 600;
}

.genre-card-figure {
  margin-bottom: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--surface-soft);
}

.genre-card-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  height: auto;
  object-fit: cover;
}

.genre-card-caption {
  padding: 8px 10px;
  border-top: 1px solid var(--line);
}

.genre-card-scope {
  color: var(--graphite);
  font-size: 14px;
}

.genre-card-criteria,
.genre-card-entry {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.genre-card-label {
  margin-bottom: 8px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 600;
}

.genre-card-list li,
.genre-card-links li {
  position: relative;
  padding-left: 14px;
  margin-bottom: 6px;
  color: var(--graphite);
  font-size: 13px;
  line-height: 1.65;
}

.genre-card-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  background-color: var(--line);
}

.genre-card-links li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  background-color: var(--red);
}

.genre-card-links a {
  display: inline-block;
  min-height: 24px;
}

.genre-advice {
  margin-bottom: 44px;
}

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

.advice-item {
  padding: 18px 16px;
  background-color: var(--surface);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.advice-item:hover {
  border-color: var(--blue);
}

.advice-title {
  margin-bottom: 8px;
  font-size: 16px;
  font-weight: 600;
}

.advice-text {
  color: var(--graphite);
  font-size: 14px;
}

.genre-path {
  margin-bottom: 44px;
}

.path-steps {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.path-step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 16px;
  background-color: var(--surface);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.path-step-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--blue);
  color: #fff;
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 15px;
}

.path-step-title {
  margin-bottom: 6px;
  font-size: 16px;
  font-weight: 600;
}

.path-step-text {
  color: var(--graphite);
  font-size: 14px;
}

.path-footnote {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 14px;
}

.genre-aside {
  padding: 18px;
  background-color: var(--surface);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.aside-title {
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--ink);
  font-size: 16px;
  font-weight: 600;
}

.aside-list li {
  margin-bottom: 8px;
}

.aside-list a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  font-size: 14px;
  border-bottom: 1px solid var(--line);
}

.aside-list a:hover {
  border-bottom-color: var(--red);
}

/* ==========================================================================
   pages · updates
   ========================================================================== */

.batch-section,
.history-section,
.status-section {
  margin-bottom: 48px;
}

.batch-list {
  border-top: 2px solid var(--ink);
}

.batch-item {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.batch-code {
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
}

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

.batch-name {
  margin-bottom: 8px;
  font-size: 17px;
  font-weight: 600;
}

.batch-meta {
  display: inline-block;
  margin-bottom: 8px;
  padding: 2px 10px;
  background-color: #e6edf4;
  border-radius: var(--radius);
  color: var(--blue);
  font-size: 12px;
}

.batch-note {
  color: var(--graphite);
  font-size: 14px;
}

.batch-figure,
.history-figure {
  margin-top: 24px;
  border: 2px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--surface);
}

.batch-figure img,
.history-figure img {
  width: 100%;
  aspect-ratio: 16 / 6;
  height: auto;
  object-fit: cover;
}

.batch-figure figcaption,
.history-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
}

.history-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.history-item {
  padding: 16px;
  background-color: var(--surface);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.history-item:hover {
  border-color: var(--ink);
}

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

.history-desc {
  color: var(--graphite);
  font-size: 14px;
}

.status-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 22px;
}

.status-card {
  padding: 18px 16px;
  background-color: var(--surface);
  border-left: 5px solid var(--yellow);
  border-radius: var(--radius);
}

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

.status-text {
  color: var(--graphite);
  font-size: 14px;
}

.status-tips {
  padding: 16px 18px;
  background-color: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.status-tip {
  position: relative;
  padding-left: 16px;
  margin-bottom: 8px;
  color: var(--graphite);
  font-size: 14px;
}

.status-tip:last-child {
  margin-bottom: 0;
}

.status-tip::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background-color: var(--red);
}

/* ==========================================================================
   pages · ranking
   ========================================================================== */

.ranking-list-section,
.ranking-method-section,
.ranking-relation-section {
  margin-bottom: 48px;
}

.ranking-list {
  border-top: 2px solid var(--ink);
}

.ranking-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr) 96px;
  gap: 16px;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.rank-index {
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
}

.rank-body {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  min-width: 0;
}

.rank-body .rank-name {
  font-size: 16px;
  font-weight: 600;
  border-bottom: 1px solid var(--line);
}

.rank-body .rank-name:hover {
  border-bottom-color: var(--red);
}

.rank-body .rank-genre {
  padding: 1px 8px;
  background-color: var(--surface-soft);
  border-radius: var(--radius);
  color: var(--graphite);
  font-size: 12px;
}

.rank-change {
  justify-self: end;
  padding: 2px 10px;
  border-radius: var(--radius);
  font-size: 12px;
  white-space: nowrap;
}

.rank-change.is-up {
  background-color: #fbe6e4;
  color: var(--red);
}

.rank-change.is-down {
  background-color: #e6edf4;
  color: var(--blue);
}

.rank-change.is-hold {
  background-color: var(--surface-soft);
  color: var(--graphite);
}

.ranking-figure {
  margin-top: 24px;
  border: 2px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--surface);
}

.ranking-figure img {
  width: 100%;
  aspect-ratio: 16 / 6;
  height: auto;
  object-fit: cover;
}

.ranking-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.method-card {
  padding: 18px 16px;
  background-color: var(--surface);
  border: 2px solid var(--line);
  border-top: 4px solid var(--blue);
  border-radius: var(--radius);
}

.method-card-title {
  margin-bottom: 8px;
  font-size: 16px;
  font-weight: 600;
}

.method-card-text {
  color: var(--graphite);
  font-size: 14px;
}

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

.relation-card {
  padding: 18px 16px;
  background-color: var(--surface);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.relation-card:hover {
  border-color: var(--ink);
}

.relation-card-title {
  margin-bottom: 8px;
  font-size: 16px;
  font-weight: 600;
}

.relation-card-text {
  color: var(--graphite);
  font-size: 14px;
}

.relation-figure {
  margin-top: 24px;
  border: 2px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--surface);
}

.relation-figure img {
  width: 100%;
  aspect-ratio: 16 / 6;
  height: auto;
  object-fit: cover;
}

.relation-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
}

.relation-note {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 14px;
}

/* ==========================================================================
   pages · fields
   ========================================================================== */

.field-sample,
.field-detail,
.field-misread,
.field-correction {
  margin-bottom: 44px;
}

.field-sample h2,
.field-detail h2,
.field-misread h2,
.field-correction h2 {
  margin-bottom: 10px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--ink);
  font-size: 22px;
  font-weight: 600;
}

.field-sample-body {
  display: grid;
  grid-template-columns: minmax(220px, 280px) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

.field-sample-figure {
  border: 2px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--surface);
}

.field-sample-figure img {
  width: 100%;
  aspect-ratio: 3 / 4;
  height: auto;
  object-fit: cover;
}

.field-sample-figure figcaption {
  padding: 10px 12px;
  border-top: 1px solid var(--line);
}

.field-sample-notes {
  min-width: 0;
  color: var(--graphite);
  font-size: 14px;
}

.field-sample-list {
  margin-top: 14px;
}

.field-sample-list li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 8px;
}

.field-sample-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 7px;
  background-color: var(--blue);
}

.field-item {
  background-color: var(--surface);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.field-item + .field-item {
  margin-top: 12px;
}

.field-item summary {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 10px 16px;
  color: var(--ink);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

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

.field-item summary::before {
  content: "＋";
  margin-right: 10px;
  color: var(--red);
  font-size: 15px;
}

.field-item[open] summary::before {
  content: "－";
}

.field-item[open] summary {
  border-bottom: 1px solid var(--line);
}

.field-item-body {
  padding: 14px 16px 16px;
  color: var(--graphite);
  font-size: 14px;
}

.field-item-body p {
  margin-bottom: 10px;
}

.field-item-body p:last-child {
  margin-bottom: 0;
}

.misread-list {
  border-top: 2px solid var(--ink);
}

.misread-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

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

.misread-desc {
  color: var(--graphite);
  font-size: 14px;
}

.misread-fix {
  margin-top: 8px;
  padding-left: 12px;
  border-left: 4px solid var(--yellow);
  color: var(--ink);
  font-size: 14px;
}

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

.correction-step {
  padding: 18px 16px;
  background-color: var(--surface);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.correction-step-title {
  margin-bottom: 8px;
  font-size: 16px;
  font-weight: 600;
}

.correction-step p {
  color: var(--graphite);
  font-size: 14px;
}

.side-block {
  margin-bottom: 24px;
  padding: 18px;
  background-color: var(--surface);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.side-title {
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--ink);
  font-size: 16px;
  font-weight: 600;
}

.field-table {
  font-size: 13px;
}

.field-table th,
.field-table td {
  padding: 8px 6px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.field-table thead th {
  color: var(--ink);
  font-weight: 600;
  background-color: var(--surface-soft);
}

.field-table tbody td {
  color: var(--graphite);
}

.field-tag {
  display: inline-block;
  padding: 1px 8px;
  background-color: #e6edf4;
  border-radius: var(--radius);
  color: var(--blue);
  font-size: 12px;
}

.side-link-list li {
  margin-bottom: 8px;
}

.side-link-list a {
  display: inline-block;
  min-height: 28px;
  font-size: 14px;
  border-bottom: 1px solid var(--line);
}

.side-link-list a:hover {
  border-bottom-color: var(--red);
}

.side-note {
  margin-top: 10px;
  color: var(--graphite);
  font-size: 13px;
}

/* ==========================================================================
   pages · guide
   ========================================================================== */

.guide-steps,
.guide-sample,
.guide-points,
.guide-feedback {
  margin-bottom: 44px;
}

.guide-steps .step-list {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.guide-steps .step-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  margin-bottom: 12px;
  background-color: var(--red);
  color: #fff;
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 15px;
}

.guide-steps .step-title {
  margin-bottom: 8px;
  font-size: 17px;
  font-weight: 600;
}

.guide-steps .step-desc {
  color: var(--graphite);
  font-size: 14px;
}

.guide-steps .step-link {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  margin-top: 14px;
  font-size: 14px;
  font-weight: 600;
}

.guide-steps .step-link::after {
  content: " →";
}

.sample-figure {
  border: 2px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--surface);
}

.sample-figure img {
  width: 100%;
  aspect-ratio: 16 / 7;
  height: auto;
  object-fit: cover;
}

.sample-caption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
}

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

.sample-fact {
  padding: 14px 16px;
  background-color: var(--surface);
  border-left: 4px solid var(--blue);
  border-radius: var(--radius);
}

.sample-fact dt {
  color: var(--graphite);
  font-size: 13px;
}

.sample-fact dd {
  margin: 4px 0 0;
  color: var(--ink);
  font-size: 15px;
  font-weight: 600;
}

.point-item {
  background-color: var(--surface);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.point-item + .point-item {
  margin-top: 12px;
}

.point-summary {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 10px 16px;
  color: var(--ink);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

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

.point-summary::before {
  content: "＋";
  margin-right: 10px;
  color: var(--blue);
  font-size: 15px;
}

.point-item[open] .point-summary::before {
  content: "－";
}

.point-item[open] .point-summary {
  border-bottom: 1px solid var(--line);
}

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

.point-desc {
  color: var(--graphite);
  font-size: 14px;
}

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

.feedback-item {
  display: flex;
  flex-direction: column;
  padding: 18px 16px;
  background-color: var(--surface);
  border: 2px solid var(--line);
  border-radius: var(--radius);
}

.feedback-item:hover {
  border-color: var(--blue);
}

.feedback-title {
  margin-bottom: 8px;
  font-size: 16px;
  font-weight: 600;
}

.feedback-desc {
  color: var(--graphite);
  font-size: 14px;
}

.feedback-link {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  margin-top: 12px;
  font-size: 14px;
  font-weight: 600;
}

.feedback-link::after {
  content: " →";
}

.guide-aside .aside-block {
  margin-bottom: 24px;
}

.aside-path {
  counter-reset: aside-step;
}

.aside-path-item {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  color: var(--graphite);
  font-size: 14px;
}

.aside-path-item:last-child {
  border-bottom: 0;
}

.aside-path-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background-color: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
}

.aside-text {
  color: var(--graphite);
  font-size: 14px;
}

.aside-link-list li {
  margin-bottom: 8px;
}

.aside-link-list a {
  display: inline-block;
  min-height: 28px;
  font-size: 14px;
  border-bottom: 1px solid var(--line);
}

.aside-link-list a:hover {
  border-bottom-color: var(--red);
}

/* ==========================================================================
   pages · 404
   ========================================================================== */

.error-main {
  padding-top: 48px;
  padding-bottom: 72px;
}

.error-panel {
  max-width: 720px;
  padding: 36px 32px;
  background-color: var(--surface);
  border: 2px solid var(--line);
  border-left: 8px solid var(--red);
  border-radius: var(--radius);
}

.error-code {
  color: var(--red);
  font-family: var(--font-mono);
  font-size: 40px;
  font-weight: 600;
  line-height: 1;
}

.error-panel h1 {
  margin-top: 14px;
  font-size: 26px;
  font-weight: 600;
}

.error-desc {
  max-width: 560px;
  margin-top: 12px;
  color: var(--graphite);
  font-size: 15px;
}

.error-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.error-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  background-color: var(--surface-soft);
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
}

.error-links a:hover {
  background-color: var(--red);
  border-color: var(--red);
  color: #fff;
}

/* ==========================================================================
   responsive
   ========================================================================== */

@media (max-width: 960px) {
  .header-inner {
    flex-wrap: wrap;
    padding: 12px 16px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    flex: 1 0 100%;
    justify-content: stretch;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
    margin-top: 10px;
    border-top: 2px solid var(--ink);
  }

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

  .nav-list a {
    min-height: 48px;
    padding: 0 6px;
    border-bottom: 1px solid var(--line);
  }

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

  .inner-main {
    padding-top: 16px;
    padding-bottom: 48px;
  }

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

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

  .hero-lead h1 {
    font-size: 26px;
  }

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

  .update-cover-layout,
  .rank-field-layout,
  .genre-layout,
  .layout-shell {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .step-list,
  .genre-directions .genre-grid,
  .advice-grid,
  .path-steps,
  .history-list,
  .status-grid,
  .method-grid,
  .relation-grid,
  .correction-steps,
  .feedback-list,
  .sample-facts,
  .page-facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px;
    padding: 36px 16px 22px;
  }

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

  .fact-bar {
    padding: 8px 16px;
  }
}

@media (max-width: 640px) {
  .fact-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .brand {
    font-size: 17px;
  }

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

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

  .hero-lead h1 {
    font-size: 23px;
  }

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

  .hero-links a {
    justify-content: center;
  }

  .cover-grid,
  .genre-grid,
  .genre-directions .genre-grid,
  .step-list,
  .advice-grid,
  .path-steps,
  .history-list,
  .status-grid,
  .method-grid,
  .relation-grid,
  .correction-steps,
  .feedback-list,
  .sample-facts,
  .page-facts,
  .index-grid {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .update-state {
    justify-self: start;
  }

  .rank-item {
    grid-template-columns: 40px minmax(0, 1fr);
    row-gap: 4px;
  }

  .rank-item .rank-genre,
  .rank-item .rank-move {
    grid-column: 2;
    text-align: left;
  }

  .ranking-item {
    grid-template-columns: 44px minmax(0, 1fr);
    row-gap: 8px;
  }

  .ranking-item .rank-change {
    grid-column: 2;
    justify-self: start;
  }

  .batch-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

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

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

  .hero-figure img,
  .batch-figure img,
  .history-figure img,
  .ranking-figure img,
  .relation-figure img,
  .sample-figure img {
    aspect-ratio: 16 / 9;
  }

  .field-sample-figure img {
    aspect-ratio: 4 / 5;
  }

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

  .error-panel {
    padding: 26px 20px;
  }

  .error-code {
    font-size: 32px;
  }

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

  .error-links a {
    justify-content: center;
  }

  .field-table {
    font-size: 12px;
  }

  .field-table th,
  .field-table td {
    padding: 6px 4px;
  }
}