:root {
  --paper: #FBF9F5;
  --ink: #1F1D1B;
  --ink-soft: #55504A;
  --ink-faint: #7C756C;
  --spine-blue: #2F5D8C;
  --spine-orange: #D97A2B;
  --spine-green: #3F7A5E;
  --block: #E8E2D6;
  --line: #D8D2C6;
  --radius: 6px;
  --shadow-card: 0 1px 2px rgba(31, 29, 27, 0.06), 0 6px 16px rgba(31, 29, 27, 0.05);
  --container: 1180px;
  --read-width: 720px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
  --font-mono: "SFMono-Regular", 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-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: 1.35;
}

h1 {
  font-size: 34px;
}

h2 {
  font-size: 22px;
}

h3 {
  font-size: 17px;
}

h4 {
  font-size: 15px;
}

p {
  margin: 0 0 0.85em;
}

p:last-child {
  margin-bottom: 0;
}

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

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

a:hover,
a:focus-visible {
  color: var(--spine-orange);
}

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

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

figure {
  margin: 0;
}

figcaption {
  margin-top: 6px;
  color: var(--ink-faint);
  font-size: 13px;
  line-height: 1.5;
}

strong {
  font-weight: 700;
}

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);
  clip-path: inset(50%);
  border: 0;
  white-space: nowrap;
}

/* ==========================================================================
   layout — shell, containers, skeleton
   ========================================================================== */

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

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

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 20px;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 12px 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  color: var(--ink);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.2;
}

.brand::before {
  content: "";
  width: 14px;
  height: 20px;
  margin-right: 9px;
  background-color: var(--spine-blue);
  border-radius: 2px 4px 4px 2px;
  box-shadow: inset -3px 0 0 rgba(251, 249, 245, 0.35);
}

.brand:hover,
.brand:focus-visible {
  color: var(--spine-blue);
}

.brand-slogan {
  flex: 1 1 180px;
  margin: 0;
  color: var(--ink-faint);
  font-size: 13px;
  line-height: 1.5;
}

.site-nav {
  flex: 0 0 auto;
  margin-left: auto;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 22px;
}

.nav-list li {
  display: block;
}

.nav-list a {
  display: inline-block;
  padding: 8px 2px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.4;
  border-bottom: 2px solid transparent;
}

.nav-list a:hover,
.nav-list a:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--line);
}

.nav-list a.is-current {
  color: var(--ink);
  font-weight: 700;
  border-bottom-color: var(--spine-blue);
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-left: auto;
  padding: 0;
  background-color: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
}

.nav-toggle::before {
  content: "";
  width: 18px;
  height: 2px;
  background-color: var(--ink);
  box-shadow: 0 -6px 0 var(--ink), 0 6px 0 var(--ink);
}

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

.inner-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 20px 24px 56px;
}

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

.top-bar__text {
  max-width: var(--container);
  margin: 0 auto;
  padding: 9px 24px;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.6;
}

/* ==========================================================================
   components — shared
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 20px;
  background-color: var(--block);
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.btn:hover,
.btn:focus-visible {
  background-color: #DED6C6;
  color: var(--ink);
  border-color: #C6BCA8;
}

.btn--primary {
  background-color: var(--spine-blue);
  color: #FFFFFF;
  border-color: var(--spine-blue);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background-color: #264B73;
  color: #FFFFFF;
  border-color: #264B73;
}

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

.btn--ghost:hover,
.btn--ghost:focus-visible {
  background-color: var(--spine-blue);
  color: #FFFFFF;
  border-color: var(--spine-blue);
}

.tag {
  display: inline-block;
  padding: 2px 8px;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.6;
  border-radius: 3px;
  white-space: nowrap;
}

.tag--update {
  background-color: rgba(217, 122, 43, 0.14);
  color: #A85A16;
}

.tag--status {
  background-color: rgba(63, 122, 94, 0.14);
  color: #2F5C46;
}

.tag--done {
  background-color: rgba(47, 93, 140, 0.13);
  color: #2A527C;
}

.tag--pause {
  background-color: rgba(124, 117, 108, 0.16);
  color: #5C564E;
}

.tag--new {
  background-color: rgba(217, 122, 43, 0.14);
  color: #A85A16;
}

.tag--recent {
  background-color: rgba(63, 122, 94, 0.14);
  color: #2F5C46;
}

.tag--none {
  background-color: rgba(124, 117, 108, 0.16);
  color: #5C564E;
}

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

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

.section-head p {
  margin: 0;
  max-width: 760px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.7;
}

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

.section-lead,
.section-intro,
.section-note {
  max-width: var(--read-width);
  margin: 0 0 18px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.75;
}

.section-note {
  font-size: 14px;
  color: var(--ink-faint);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-bottom: 16px;
  color: var(--ink-faint);
  font-size: 13px;
  line-height: 1.6;
}

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

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

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

.page-header {
  margin-bottom: 26px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.page-title {
  max-width: 900px;
  margin-bottom: 10px;
  font-size: 34px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink);
}

.page-description {
  max-width: var(--read-width);
  margin: 0 0 10px;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.75;
}

.page-meta {
  margin: 0;
  color: var(--ink-faint);
  font-size: 13px;
  line-height: 1.6;
}

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

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

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

.side-title,
.side-toc__title,
.aside-title {
  margin-bottom: 10px;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.side-nav ul,
.side-toc__list,
.aside-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.side-nav a,
.side-toc__list a,
.aside-list a {
  display: block;
  min-height: 34px;
  padding: 6px 10px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.5;
  border-left: 2px solid var(--line);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.side-nav a:hover,
.side-toc__list a:hover,
.aside-list a:hover,
.side-nav a:focus-visible,
.side-toc__list a:focus-visible,
.aside-list a:focus-visible {
  color: var(--ink);
  background-color: var(--block);
  border-left-color: var(--spine-orange);
}

.side-toc__list a.is-active {
  color: var(--ink);
  font-weight: 700;
  background-color: var(--block);
  border-left-color: var(--spine-blue);
}

.side-block,
.aside-block {
  margin-top: 20px;
  padding: 16px;
  background-color: #FFFFFF;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.side-block__title,
.aside-block h3 {
  margin-bottom: 8px;
  font-size: 15px;
  font-weight: 700;
}

.side-block p,
.aside-block p {
  margin: 0 0 8px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

.side-block p:last-child,
.aside-block p:last-child {
  margin-bottom: 0;
}

/* ==========================================================================
   components — footer
   ========================================================================== */

.site-footer {
  margin-top: auto;
  background-color: #F3EFE6;
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(220px, 1.4fr) repeat(4, minmax(140px, 1fr));
  gap: 28px 24px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 40px 24px 28px;
}

.footer-brand__name {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
}

.footer-brand__desc {
  margin: 0;
  max-width: 320px;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.7;
}

.footer-col__title {
  margin: 0 0 10px;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-col a {
  display: inline-block;
  min-height: 24px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.6;
}

.footer-col a:hover,
.footer-col a:focus-visible {
  color: var(--spine-orange);
}

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

.footer-copy {
  max-width: var(--container);
  margin: 0 auto;
  padding: 16px 24px;
  color: var(--ink-faint);
  font-size: 13px;
  line-height: 1.6;
}

/* ==========================================================================
   pages — index
   ========================================================================== */

.home-main {
  display: block;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 36px;
  align-items: start;
  max-width: var(--container);
  margin: 0 auto;
  padding: 40px 24px 44px;
}

.hero__content {
  min-width: 0;
}

.hero__kicker {
  display: inline-block;
  margin: 0 0 12px;
  padding: 3px 10px;
  background-color: var(--block);
  color: var(--spine-blue);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.6;
  border-radius: 3px;
}

.hero__title {
  margin: 0 0 14px;
  font-size: 34px;
  font-weight: 700;
  line-height: 1.3;
}

.hero__lead {
  max-width: 560px;
  margin: 0 0 22px;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.8;
}

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

.hero__media {
  min-width: 0;
}

.hero__figure {
  margin: 0;
}

.hero__figure img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--block);
}

.hero__thumbs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 14px;
}

.hero__thumbs li {
  min-width: 0;
}

.hero__thumbs img {
  width: 100%;
  height: 96px;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--block);
}

.hero__thumbs figcaption {
  font-size: 12px;
  line-height: 1.45;
}

.genre-index,
.update-glance,
.duo,
.summary-pair,
.site-index {
  max-width: var(--container);
  margin: 0 auto;
  padding: 36px 24px;
}

.genre-index__list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.genre-index__row {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.genre-index__no {
  display: inline-block;
  padding-top: 2px;
  color: var(--spine-blue);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

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

.genre-index__name {
  margin: 0 0 4px;
  font-size: 17px;
}

.genre-index__name a {
  color: var(--ink);
}

.genre-index__name a:hover,
.genre-index__name a:focus-visible {
  color: var(--spine-blue);
}

.genre-index__scope {
  margin: 0 0 4px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.7;
}

.genre-index__fields {
  margin: 0;
  color: var(--ink-faint);
  font-size: 13px;
  line-height: 1.6;
}

.genre-index__more,
.update-glance__more,
.duo__more,
.summary-pair__more {
  margin: 16px 0 0;
  font-size: 15px;
}

.update-glance__group {
  margin-bottom: 22px;
}

.update-glance__group:last-of-type {
  margin-bottom: 0;
}

.update-glance__date {
  margin: 0 0 8px;
  padding-bottom: 6px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
  border-bottom: 1px solid var(--line);
}

.update-glance__list {
  display: flex;
  flex-direction: column;
}

.update-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--line);
}

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

.update-row__name {
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
}

.update-row__genre {
  color: var(--ink-faint);
  font-size: 13px;
}

.duo {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.duo__col {
  min-width: 0;
  padding: 20px;
  background-color: #FFFFFF;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.duo__heading {
  margin: 0 0 6px;
  font-size: 17px;
}

.duo__note {
  margin: 0 0 14px;
  color: var(--ink-faint);
  font-size: 13px;
  line-height: 1.65;
}

.rank-mini {
  display: flex;
  flex-direction: column;
}

.rank-mini__row {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px dashed var(--line);
}

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

.rank-mini__no {
  color: var(--spine-orange);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
}

.rank-mini__name {
  min-width: 0;
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
}

.rank-mini__genre {
  color: var(--ink-faint);
  font-size: 13px;
  white-space: nowrap;
}

.topic-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.topic-item__figure {
  margin: 0 0 8px;
}

.topic-item__figure img {
  width: 100%;
  height: 130px;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--block);
}

.topic-item__name {
  margin: 0 0 4px;
  font-size: 16px;
}

.topic-item__name a {
  color: var(--ink);
}

.topic-item__name a:hover,
.topic-item__name a:focus-visible {
  color: var(--spine-blue);
}

.topic-item__scope {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

.summary-pair {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.summary-pair__col {
  min-width: 0;
  padding: 20px;
  background-color: var(--block);
  border-radius: var(--radius);
}

.summary-pair__heading {
  margin: 0 0 12px;
  font-size: 17px;
}

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

.summary-list li {
  position: relative;
  padding-left: 16px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.7;
}

.summary-list li::before {
  content: "";
  position: absolute;
  top: 11px;
  left: 0;
  width: 6px;
  height: 6px;
  background-color: var(--spine-blue);
  border-radius: 50%;
}

.site-index__grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 16px;
}

.site-index__item {
  min-width: 0;
  padding: 16px;
  background-color: #FFFFFF;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.site-index__item:hover {
  border-color: #C6BCA8;
  box-shadow: var(--shadow-card);
}

.site-index__item h3 {
  margin: 0 0 6px;
  font-size: 16px;
}

.site-index__item h3 a {
  color: var(--ink);
}

.site-index__item h3 a:hover,
.site-index__item h3 a:focus-visible {
  color: var(--spine-blue);
}

.site-index__item p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.65;
}

/* ==========================================================================
   pages — genre
   ========================================================================== */

.genre-layout {
  align-items: start;
}

.genre-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.genre-row {
  border-bottom: 1px solid var(--line);
}

.genre-row__link {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) minmax(0, 1fr);
  gap: 8px 18px;
  align-items: baseline;
  padding: 14px 0;
  color: var(--ink);
}

.genre-row__link:hover,
.genre-row__link:focus-visible {
  color: var(--ink);
  background-color: rgba(232, 226, 214, 0.45);
}

.genre-row__no {
  color: var(--spine-blue);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
}

.genre-row__name {
  font-size: 17px;
  font-weight: 700;
}

.genre-row__fields {
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.65;
}

.genre-traits {
  margin-top: 40px;
}

.trait-block {
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.trait-block:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.trait-block h3 {
  margin: 0 0 12px;
  font-size: 17px;
}

.trait-figure {
  margin: 0 0 12px;
}

.trait-figure img {
  width: 100%;
  max-width: 420px;
  height: 200px;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--block);
}

.trait-block p {
  max-width: var(--read-width);
  margin: 0;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
}

.field-compare {
  margin-top: 40px;
}

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

.field-compare__col {
  min-width: 0;
  padding: 18px;
  background-color: #FFFFFF;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.field-compare__col h3 {
  margin: 0 0 12px;
  font-size: 16px;
}

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

.status-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

.status-tag {
  display: inline-block;
  padding: 2px 8px;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.6;
  border-radius: 3px;
  white-space: nowrap;
}

.status-tag--ongoing {
  background-color: rgba(63, 122, 94, 0.14);
  color: #2F5C46;
}

.status-tag--done {
  background-color: rgba(47, 93, 140, 0.13);
  color: #2A527C;
}

.status-tag--paused {
  background-color: rgba(124, 117, 108, 0.16);
  color: #5C564E;
}

.status-tag--batch {
  background-color: rgba(217, 122, 43, 0.14);
  color: #A85A16;
}

.field-compare__note {
  margin: 16px 0 0;
  color: var(--ink-faint);
  font-size: 14px;
  line-height: 1.7;
}

.genre-more {
  margin-top: 40px;
}

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

.more-card {
  display: block;
  min-width: 0;
  padding: 18px;
  background-color: var(--block);
  border: 1px solid transparent;
  border-radius: var(--radius);
  transition: border-color 0.18s ease, background-color 0.18s ease;
}

.more-card:hover,
.more-card:focus-visible {
  background-color: #FFFFFF;
  border-color: var(--line);
}

.more-card__title {
  display: block;
  margin-bottom: 6px;
  color: var(--ink);
  font-size: 16px;
  font-weight: 700;
}

.more-card__desc {
  display: block;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.65;
}

.genre-side {
  padding: 18px;
  background-color: #FFFFFF;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

/* ==========================================================================
   pages — updates
   ========================================================================== */

.layout-shell {
  align-items: start;
}

.updates-stream {
  min-width: 0;
}

.update-group {
  margin-bottom: 26px;
  padding-bottom: 6px;
}

.update-group:last-child {
  margin-bottom: 0;
}

.update-group__date {
  margin: 0 0 10px;
  padding-bottom: 6px;
  font-size: 16px;
  font-weight: 700;
  border-bottom: 1px solid var(--line);
}

.update-list {
  display: flex;
  flex-direction: column;
}

.update-list .update-row {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px dashed var(--line);
}

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

.update-row__cover {
  margin: 0;
}

.update-row__cover img {
  width: 64px;
  height: 64px;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--block);
}

.update-row__body {
  min-width: 0;
}

.update-list .update-row__name {
  display: block;
  margin-bottom: 2px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
}

.update-row__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 12px;
  color: var(--ink-faint);
  font-size: 13px;
  line-height: 1.6;
}

.updates-legend,
.updates-genre-filter,
.updates-cross {
  margin-top: 40px;
}

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

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

.legend-col h3 {
  margin: 0 0 12px;
  font-size: 16px;
}

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

.legend-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

.genre-jump-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
}

.genre-jump-list a {
  display: block;
  min-height: 44px;
  padding: 10px 14px;
  background-color: #FFFFFF;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.6;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.genre-jump-list a:hover,
.genre-jump-list a:focus-visible {
  color: var(--spine-blue);
  border-color: var(--spine-blue);
}

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

.cross-col {
  min-width: 0;
  padding: 20px;
  background-color: var(--block);
  border-radius: var(--radius);
}

.cross-col h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.cross-col p {
  margin: 0 0 14px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

.updates-aside {
  min-width: 0;
  padding: 18px;
  background-color: #FFFFFF;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

/* ==========================================================================
   pages — rankings
   ========================================================================== */

.rank-section,
.rank-rule-section,
.rank-dist-section,
.rank-more-section {
  margin-bottom: 44px;
}

.rank-more-section {
  margin-bottom: 0;
}

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

.rank-item {
  display: grid;
  grid-template-columns: 46px 72px minmax(0, 1fr);
  gap: 16px;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.rank-no {
  color: var(--spine-orange);
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  text-align: center;
}

.rank-cover {
  margin: 0;
}

.rank-cover img {
  width: 72px;
  height: 72px;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--block);
}

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

.rank-name {
  margin: 0 0 4px;
  font-size: 16px;
}

.rank-name a {
  color: var(--ink);
}

.rank-name a:hover,
.rank-name a:focus-visible {
  color: var(--spine-blue);
}

.rank-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 12px;
  margin: 0;
  color: var(--ink-faint);
  font-size: 13px;
  line-height: 1.6;
}

.rank-genre {
  color: var(--ink-soft);
}

.rank-state {
  display: inline-block;
  padding: 1px 8px;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.6;
  border-radius: 3px;
  white-space: nowrap;
}

.rank-state--ongoing {
  background-color: rgba(63, 122, 94, 0.14);
  color: #2F5C46;
}

.rank-state--done {
  background-color: rgba(47, 93, 140, 0.13);
  color: #2A527C;
}

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

.rule-item {
  min-width: 0;
  padding: 18px;
  background-color: #FFFFFF;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.rule-item__title {
  margin: 0 0 8px;
  font-size: 16px;
}

.rule-item p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

.rule-note {
  margin: 16px 0 0;
  color: var(--ink-faint);
  font-size: 14px;
  line-height: 1.7;
}

.dist-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.dist-item {
  display: grid;
  grid-template-columns: 140px 96px minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.dist-genre {
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
}

.dist-count {
  color: var(--spine-blue);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
}

.dist-note {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

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

.more-col {
  min-width: 0;
  padding: 18px;
  background-color: var(--block);
  border-radius: var(--radius);
}

.more-col__title {
  margin: 0 0 8px;
  font-size: 16px;
}

.more-col__title a {
  color: var(--ink);
}

.more-col__title a:hover,
.more-col__title a:focus-visible {
  color: var(--spine-blue);
}

.more-col p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

/* ==========================================================================
   pages — reading guide
   ========================================================================== */

.sidebar-left {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 36px;
  align-items: start;
}

.main-column,
.content-column {
  min-width: 0;
}

.guide-section {
  margin-bottom: 40px;
}

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

.guide-figure {
  margin: 0 0 20px;
}

.guide-figure img {
  width: 100%;
  max-width: 560px;
  height: 240px;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--block);
}

.field-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

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

.field-item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.field-item__name {
  margin: 0 0 6px;
  font-size: 16px;
}

.field-item__desc {
  max-width: var(--read-width);
  margin: 0 0 6px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.75;
}

.field-item__value {
  margin: 0;
  color: var(--ink-faint);
  font-size: 13px;
  line-height: 1.65;
}

.path-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.path-step {
  min-width: 0;
  padding: 18px;
  background-color: #FFFFFF;
  border: 1px solid var(--line);
  border-top: 3px solid var(--spine-blue);
  border-radius: var(--radius);
}

.path-step__name {
  margin: 0 0 8px;
  font-size: 16px;
}

.path-step__desc {
  margin: 0 0 8px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

.path-step__result {
  margin: 0;
  color: var(--ink-faint);
  font-size: 13px;
  line-height: 1.65;
}

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

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

.marker-col__title {
  margin: 0 0 12px;
  font-size: 16px;
}

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

.marker-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

.marker-item {
  color: var(--ink-soft);
}

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

.faq-item {
  background-color: #FFFFFF;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.faq-item__q {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 12px 16px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.6;
  cursor: pointer;
  list-style: none;
}

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

.faq-item__q::before {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--spine-blue);
  border-bottom: 2px solid var(--spine-blue);
  transform: rotate(-45deg);
  transition: transform 0.18s ease;
}

.faq-item[open] .faq-item__q::before {
  transform: rotate(45deg);
}

.faq-item__a {
  margin: 0;
  padding: 0 16px 16px 34px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
}

.guide-links {
  padding-top: 8px;
}

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

.link-col {
  min-width: 0;
  padding: 18px;
  background-color: var(--block);
  border-radius: var(--radius);
}

.link-col__title {
  margin: 0 0 8px;
  font-size: 16px;
}

.link-col__desc {
  margin: 0 0 12px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

.link-col__action {
  display: inline-block;
  min-height: 24px;
  font-size: 14px;
  font-weight: 700;
}

/* ==========================================================================
   pages — boundary
   ========================================================================== */

.content-block {
  margin-bottom: 40px;
}

.content-block:last-of-type {
  margin-bottom: 0;
}

.media-figure {
  margin: 0 0 20px;
}

.media-figure img {
  width: 100%;
  max-width: 560px;
  height: 240px;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-color: var(--block);
}

.flow-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.flow-item {
  min-width: 0;
  padding: 18px;
  background-color: #FFFFFF;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.flow-item__index {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--spine-blue);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
}

.flow-item__title {
  margin: 0 0 8px;
  font-size: 16px;
}

.flow-item__text {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.75;
}

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

.field-column {
  min-width: 0;
  padding: 18px;
  background-color: #FFFFFF;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.field-column__title {
  margin: 0 0 12px;
  font-size: 16px;
}

.field-column .field-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-top: 0;
}

.field-column .field-list li,
.field-list__item {
  position: relative;
  padding-left: 16px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.75;
}

.field-column .field-list li::before,
.field-list__item::before {
  content: "";
  position: absolute;
  top: 10px;
  left: 0;
  width: 6px;
  height: 6px;
  background-color: var(--spine-green);
  border-radius: 50%;
}

.field-name {
  color: var(--ink);
  font-weight: 700;
}

.exclude-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.exclude-item {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.exclude-item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.exclude-item__title {
  margin: 0 0 4px;
  font-size: 16px;
}

.exclude-item__text {
  max-width: var(--read-width);
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.75;
}

.feedback-list {
  display: flex;
  flex-direction: column;
  counter-reset: feedback;
  border-top: 1px solid var(--line);
}

.feedback-item {
  position: relative;
  padding: 14px 0 14px 42px;
  border-bottom: 1px solid var(--line);
}

.feedback-item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.feedback-item::before {
  counter-increment: feedback;
  content: counter(feedback, decimal-leading-zero);
  position: absolute;
  top: 16px;
  left: 0;
  color: var(--spine-orange);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
}

.feedback-item__title {
  margin: 0 0 4px;
  font-size: 16px;
}

.feedback-item__text {
  max-width: var(--read-width);
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.75;
}

.related-links {
  margin-top: 32px;
  padding: 20px;
  background-color: var(--block);
  border-radius: var(--radius);
}

.related-links__title {
  margin: 0 0 12px;
  font-size: 16px;
}

.related-links__list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
}

.related-links__list a {
  display: block;
  min-height: 44px;
  padding: 10px 14px;
  background-color: #FFFFFF;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.6;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.related-links__list a:hover,
.related-links__list a:focus-visible {
  color: var(--spine-blue);
  border-color: var(--spine-blue);
}

/* 长文页侧栏在正文进入视口后固定 */
@media (min-width: 1025px) {
  .sidebar-left .side-toc {
    position: sticky;
    top: 88px;
    padding: 18px;
    background-color: #FFFFFF;
    border: 1px solid var(--line);
    border-radius: var(--radius);
  }

  .page-layout.sidebar-left {
    grid-template-columns: 220px minmax(0, 1fr);
  }
}

/* ==========================================================================
   pages — 404
   ========================================================================== */

.error-main {
  display: block;
}

.error-hero {
  border-bottom: 1px solid var(--line);
}

.error-hero__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 64px 24px 48px;
}

.error-code {
  margin: 0 0 12px;
  color: var(--spine-orange);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.error-title {
  max-width: 720px;
  margin: 0 0 14px;
  font-size: 34px;
  font-weight: 700;
  line-height: 1.3;
}

.error-desc {
  max-width: var(--read-width);
  margin: 0 0 22px;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.8;
}

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

.error-paths {
  max-width: var(--container);
  margin: 0 auto;
  padding: 40px 24px 8px;
}

.error-paths h2 {
  margin: 0 0 8px;
  font-size: 22px;
}

.error-paths p {
  max-width: var(--read-width);
  margin: 0 0 18px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.75;
}

.error-paths__list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}

.error-paths__list a {
  display: block;
  min-height: 44px;
  padding: 14px 16px;
  background-color: #FFFFFF;
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.6;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.error-paths__list a:hover,
.error-paths__list a:focus-visible {
  color: var(--spine-blue);
  border-color: var(--spine-blue);
}

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

@media (max-width: 1024px) {
  .header-inner {
    gap: 8px 16px;
  }

  .brand-slogan {
    display: none;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    padding: 32px 24px 36px;
  }

  .duo,
  .summary-pair {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }

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

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

  .footer-brand {
    grid-column: 1 / -1;
  }

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

  .sidebar-left {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .sidebar-left .side-toc {
    order: 2;
  }

  .sidebar-left .main-column,
  .sidebar-left .content-column {
    order: 1;
  }

  .genre-row__link {
    grid-template-columns: 56px minmax(0, 1fr);
  }

  .genre-row__fields {
    grid-column: 2 / -1;
  }

  .rule-list,
  .more-grid,
  .link-columns,
  .genre-more__cols {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }
}

@media (max-width: 720px) {
  body {
    font-size: 16px;
  }

  h1,
  .page-title,
  .hero__title,
  .error-title {
    font-size: 26px;
  }

  h2,
  .section-title {
    font-size: 20px;
  }

  .site-header {
    position: static;
  }

  .header-inner {
    padding: 10px 16px;
  }

  .brand {
    font-size: 18px;
  }

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

  .site-nav {
    flex: 1 1 100%;
    margin-left: 0;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
    padding: 6px 0 4px;
    border-top: 1px solid var(--line);
  }

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

  .nav-list li {
    width: 100%;
  }

  .nav-list a {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: 10px 2px;
    font-size: 16px;
    border-bottom: 1px solid transparent;
  }

  .nav-list a.is-current {
    border-bottom-color: transparent;
    border-left: 3px solid var(--spine-blue);
    padding-left: 10px;
  }

  .top-bar__text {
    padding: 8px 16px;
    font-size: 12px;
  }

  .inner-main {
    padding: 16px 16px 44px;
  }

  .hero,
  .genre-index,
  .update-glance,
  .duo,
  .summary-pair,
  .site-index {
    padding: 26px 16px;
  }

  .hero__figure img {
    height: 200px;
  }

  .hero__thumbs {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
  }

  .hero__thumbs img {
    height: 72px;
  }

  .hero__thumbs figcaption {
    font-size: 11px;
  }

  .genre-index__row {
    grid-template-columns: 46px minmax(0, 1fr);
    gap: 12px;
  }

  .page-header {
    margin-bottom: 22px;
    padding-bottom: 16px;
  }

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

  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px 16px;
    padding: 30px 16px 22px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

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

  .genre-row__link {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 6px 12px;
  }

  .genre-row__fields {
    grid-column: 2 / -1;
  }

  .trait-figure img,
  .guide-figure img,
  .media-figure img {
    height: 180px;
  }

  .field-compare__cols,
  .legend-cols,
  .cross-cols,
  .marker-columns,
  .field-columns {
    grid-template-columns: minmax(0, 1fr);
    gap: 16px;
  }

  .update-list .update-row {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 12px;
    align-items: start;
  }

  .update-list .update-row .tag {
    grid-column: 2 / -1;
    justify-self: start;
  }

  .update-row__cover img {
    width: 56px;
    height: 56px;
  }

  .rank-item {
    grid-template-columns: 34px 60px minmax(0, 1fr);
    gap: 12px;
  }

  .rank-cover img {
    width: 60px;
    height: 60px;
  }

  .rank-no {
    font-size: 16px;
  }

  .dist-item {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 4px 12px;
  }

  .dist-note {
    grid-column: 1 / -1;
  }

  .path-steps,
  .flow-list,
  .rule-list,
  .more-grid,
  .link-columns,
  .genre-more__cols,
  .related-links__list,
  .error-paths__list {
    grid-template-columns: minmax(0, 1fr);
  }

  .error-hero__inner {
    padding: 44px 16px 34px;
  }

  .error-paths {
    padding: 30px 16px 4px;
  }

  .faq-item__a {
    padding-left: 16px;
  }
}

@media (max-width: 400px) {
  .hero__thumbs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero__thumbs li:last-child {
    grid-column: 1 / -1;
  }

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

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