:root {
  --text-main: #24282e;
  --text-sub: #5b6472;
  --text-muted: #7c8694;
  --bg-page: #ffffff;
  --bg-soft: #f5f7f8;
  --bg-softer: #fafbfb;
  --line: #dfe4e8;
  --line-soft: #eceff1;
  --accent: #1f6f78;
  --accent-dark: #175a62;
  --accent-soft: #e6f1f2;
  --green: #2f8f6f;
  --green-soft: #e7f4ee;
  --warn: #b4573a;
  --warn-soft: #f8ece7;
  --radius: 6px;
  --radius-sm: 4px;
  --shadow-card: 0 1px 2px rgba(36, 40, 46, 0.05);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

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

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-main);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
p,
ul,
ol,
dl,
dd,
figure {
  margin: 0;
}

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

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

a {
  color: inherit;
  text-decoration: none;
}

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

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
}

time {
  font-variant-numeric: tabular-nums;
}

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

/* ============ layout ============ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--bg-page);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 12px 24px;
}

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

.brand-mark {
  width: 30px;
  height: 30px;
  object-fit: contain;
  border-radius: var(--radius-sm);
}

.brand-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: 0;
}

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

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

.nav-link {
  display: inline-block;
  padding: 9px 14px;
  font-size: 15px;
  color: var(--text-sub);
  border-radius: var(--radius-sm);
  transition: color 0.15s ease, background-color 0.15s ease;
}

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

.nav-link.is-current {
  color: var(--accent);
  font-weight: 600;
  background: var(--accent-soft);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
}

.site-main {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px 64px;
}

.home-main {
  padding-top: 28px;
}

.inner-main {
  padding-top: 18px;
}

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

.footer-inner {
  display: grid;
  grid-template-columns: minmax(240px, 1.4fr) repeat(3, minmax(150px, 1fr));
  gap: 32px;
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 40px 24px 28px;
}

.footer-brand-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
}

.footer-brand-desc {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-sub);
}

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

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

.footer-list a {
  font-size: 14px;
  color: var(--text-sub);
}

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

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

.footer-copy {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 16px 24px;
  font-size: 13px;
  color: var(--text-muted);
}

/* ============ components ============ */

/* 通用区块标题 */
.section-head {
  margin-bottom: 18px;
}

.section-title {
  font-size: 22px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-main);
}

.section-desc {
  margin-top: 6px;
  font-size: 14px;
  color: var(--text-sub);
}

.section-lead {
  margin-top: 8px;
  margin-bottom: 20px;
  font-size: 14px;
  color: var(--text-sub);
  max-width: 820px;
}

.subsection-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 12px;
}

/* 文字链接与按钮 */
.text-link {
  display: inline-block;
  font-size: 14px;
  color: var(--accent);
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s ease;
}

.text-link:hover {
  border-bottom-color: var(--accent);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  font-size: 15px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

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

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

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

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

/* 标签 */
.tag {
  display: inline-block;
  padding: 1px 8px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: var(--radius-sm);
}

.tag-link {
  display: inline-block;
  padding: 5px 12px;
  font-size: 13px;
  color: var(--text-sub);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.tag-link:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* 状态 */
.status {
  display: inline-block;
  padding: 1px 8px;
  font-size: 12px;
  line-height: 1.7;
  border-radius: var(--radius-sm);
}

.status-ongoing {
  color: var(--green);
  background: var(--green-soft);
}

.status-done {
  color: var(--text-sub);
  background: var(--bg-soft);
}

.status-pause {
  color: var(--warn);
  background: var(--warn-soft);
}

/* 变动类型 */
.type-new,
.type-info,
.type-status {
  display: inline-block;
  font-size: 12px;
  line-height: 1.7;
  padding: 1px 8px;
  border-radius: var(--radius-sm);
}

.type-new {
  color: var(--green);
  background: var(--green-soft);
}

.type-info {
  color: var(--accent);
  background: var(--accent-soft);
}

.type-status {
  color: var(--text-sub);
  background: var(--bg-soft);
}

/* 图片容器 */
.content-media {
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--bg-soft);
}

.content-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ============ 面包屑与页面标题区（内页统一） ============ */

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

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

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

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

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

.page-header {
  padding: 18px 0 26px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 32px;
}

.page-title {
  font-size: 30px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--text-main);
}

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

.page-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin-top: 14px;
}

.page-meta-item {
  font-size: 13px;
  color: var(--text-muted);
}

/* ============ pages: index ============ */

/* 首屏目录式索引区 */
.hero-directory {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 1fr);
  gap: 32px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line);
}

.hero-lead {
  padding-top: 12px;
}

.hero-title {
  font-size: 30px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--text-main);
}

.hero-summary {
  margin-top: 14px;
  max-width: 620px;
  font-size: 15px;
  color: var(--text-sub);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

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

.hero-panel {
  padding: 20px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.panel-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

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

.panel-list li + li {
  border-top: 1px solid var(--line-soft);
}

.panel-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 44px;
  padding: 8px 2px;
  font-size: 14px;
  color: var(--text-main);
}

.panel-link:hover {
  color: var(--accent);
}

.panel-note {
  flex: 0 0 auto;
  font-size: 12px;
  color: var(--text-muted);
}

.panel-featured {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.panel-subtitle {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 8px;
}

.featured-mini {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.featured-mini-link {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 8px 10px;
  background: var(--bg-page);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text-main);
}

.featured-mini-link:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.featured-mini-note {
  font-size: 12px;
  color: var(--text-muted);
}

.content-media-primary {
  grid-column: 1 / -1;
  margin-top: 4px;
  aspect-ratio: 16 / 6;
  border: 1px solid var(--line);
}

.content-media-primary figcaption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--text-muted);
  background: var(--bg-page);
  border-top: 1px solid var(--line);
}

/* 题材分类总览 */
.genre-overview {
  padding: 40px 0;
  border-bottom: 1px solid var(--line);
}

.genre-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.genre-card {
  display: flex;
  flex-direction: column;
  padding: 18px;
  background: var(--bg-page);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.genre-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
}

.genre-scope {
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-sub);
}

.genre-samples {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
}

.genre-samples a {
  font-size: 14px;
  color: var(--accent);
}

.genre-samples a:hover {
  color: var(--accent-dark);
}

/* 封面墙与最近更新并列区 */
.cover-update {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(300px, 1fr);
  gap: 32px;
  padding: 40px 0;
  border-bottom: 1px solid var(--line);
}

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

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.filter-chip {
  min-height: 36px;
  padding: 0 14px;
  font-size: 13px;
  color: var(--text-sub);
  background: var(--bg-page);
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: color 0.15s ease, border-color 0.15s ease, background-color 0.15s ease;
}

.filter-chip:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.filter-chip.is-active {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
}

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

.cover-card {
  display: flex;
  flex-direction: column;
  padding: 10px;
  background: var(--bg-page);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transition: border-color 0.15s ease, transform 0.15s ease;
}

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

.cover-figure {
  aspect-ratio: 3 / 4;
  overflow: hidden;
  border-radius: var(--radius-sm);
  background: var(--bg-soft);
}

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

.cover-name {
  margin-top: 10px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text-main);
}

.cover-name a:hover {
  color: var(--accent);
}

.cover-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
}

/* 最近更新记录（首页侧栏） */
.update-column {
  min-width: 0;
  padding-left: 32px;
  border-left: 1px solid var(--line);
}

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

.update-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 6px 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 14px;
}

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

.update-date {
  grid-row: 1 / span 2;
  align-self: start;
  padding-top: 2px;
  font-size: 13px;
  color: var(--text-muted);
  white-space: nowrap;
}

.update-name {
  min-width: 0;
  font-weight: 600;
  color: var(--text-main);
}

.update-name a:hover {
  color: var(--accent);
}

.update-genre {
  grid-column: 2;
  font-size: 13px;
  color: var(--text-sub);
}

.update-type {
  grid-row: 1;
  grid-column: 3;
  justify-self: end;
  white-space: nowrap;
}

/* 人气榜单与编辑推荐 */
.ranking-featured {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(300px, 1fr);
  gap: 32px;
  padding: 40px 0;
  border-bottom: 1px solid var(--line);
}

.ranking-column {
  min-width: 0;
}

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

.ranking-row {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  align-items: center;
  gap: 6px 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 14px;
}

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

.rank-no {
  grid-row: 1 / span 2;
  align-self: start;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.rank-name {
  min-width: 0;
  font-weight: 600;
  color: var(--text-main);
}

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

.rank-genre {
  grid-column: 2;
  font-size: 13px;
  color: var(--text-sub);
}

.rank-note {
  grid-row: 1;
  grid-column: 3;
  justify-self: end;
  max-width: 220px;
  font-size: 12px;
  color: var(--text-muted);
  text-align: right;
}

.featured-column {
  min-width: 0;
  padding-left: 32px;
  border-left: 1px solid var(--line);
}

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

.featured-card {
  padding: 16px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.featured-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
}

.featured-desc {
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-sub);
}

.featured-scope {
  margin-top: 8px;
  font-size: 13px;
  color: var(--text-muted);
}

.featured-card .text-link {
  margin-top: 10px;
}

/* 阅读说明摘要与内容反馈入口 */
.guide-feedback {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(300px, 1fr);
  gap: 32px;
  padding: 40px 0;
  border-bottom: 1px solid var(--line);
}

.guide-column {
  min-width: 0;
}

.guide-points {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.guide-point {
  padding: 14px 16px;
  background: var(--bg-page);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.guide-point-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
}

.guide-point-text {
  margin-top: 6px;
  font-size: 14px;
  color: var(--text-sub);
}

.feedback-column {
  min-width: 0;
  padding-left: 32px;
  border-left: 1px solid var(--line);
}

.feedback-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.feedback-item {
  padding: 14px 16px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.feedback-type {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
}

.feedback-need {
  margin-top: 6px;
  font-size: 13px;
  color: var(--text-sub);
}

/* 站内栏目索引 */
.section-index {
  padding: 40px 0 0;
}

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

.index-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px;
  background: var(--bg-page);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.index-card:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.index-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
}

.index-desc {
  font-size: 13px;
  color: var(--text-sub);
}

/* ============ pages: categories ============ */

.genre-table-section {
  margin-bottom: 44px;
}

.genre-table {
  border-top: 1px solid var(--line);
}

.genre-row {
  display: grid;
  grid-template-columns: 88px minmax(150px, 0.9fr) minmax(220px, 1.5fr) minmax(180px, 1.1fr) minmax(150px, 0.9fr);
  align-items: start;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
}

.genre-row-head {
  padding: 10px 0;
  font-size: 13px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--line);
}

.genre-cell {
  min-width: 0;
  font-size: 14px;
}

.genre-thumb {
  width: 88px;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  border-radius: var(--radius-sm);
  background: var(--bg-soft);
}

.genre-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.genre-cell-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
}

.genre-cell-scope {
  color: var(--text-sub);
}

.genre-cell-works {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.genre-cell-works a {
  color: var(--accent);
}

.genre-cell-works a:hover {
  color: var(--accent-dark);
}

.genre-cell-adjacent {
  color: var(--text-muted);
  font-size: 13px;
}

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

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

.scope-note {
  padding: 18px 20px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.scope-note-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
}

.scope-note-text {
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-sub);
}

.scope-note-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.scope-note-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  color: var(--text-sub);
}

.scope-note-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

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

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

.adjacent-card {
  display: flex;
  flex-direction: column;
  padding: 18px 20px;
  background: var(--bg-page);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.adjacent-card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
}

.adjacent-card-text {
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-sub);
}

.adjacent-meta {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 12px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
}

.adjacent-meta dt {
  color: var(--text-muted);
}

.adjacent-meta dd {
  color: var(--text-main);
}

.adjacent-link {
  align-self: flex-start;
  margin-top: 14px;
  font-size: 14px;
  color: var(--accent);
}

.adjacent-link:hover {
  color: var(--accent-dark);
}

/* ============ pages: updates ============ */

.update-list-section {
  margin-bottom: 44px;
}

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

.update-list-section .update-row {
  grid-template-columns: 72px minmax(0, 1fr);
  align-items: start;
  gap: 12px 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
}

.update-thumb {
  grid-row: 1 / span 4;
  width: 72px;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  border-radius: var(--radius-sm);
  background: var(--bg-soft);
}

.update-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.update-body {
  min-width: 0;
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 4px 14px;
}

.update-body .update-date {
  font-size: 13px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.update-body .update-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
}

.update-body .update-name a:hover {
  color: var(--accent);
}

.update-body .update-genre {
  grid-column: 2;
  font-size: 13px;
  color: var(--text-sub);
}

.update-body .update-type {
  grid-column: 3;
  grid-row: 1;
  justify-self: end;
}

.section-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 16px;
  font-size: 14px;
}

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

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

.record-notes-section {
  margin-bottom: 44px;
}

.record-notes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  padding: 20px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.record-notes-col {
  min-width: 0;
}

.field-list {
  display: grid;
  grid-template-columns: minmax(90px, 0.6fr) minmax(0, 1.4fr);
  gap: 8px 16px;
  font-size: 14px;
}

.field-list dt {
  color: var(--text-main);
  font-weight: 600;
}

.field-list dd {
  color: var(--text-sub);
}

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

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

.rhythm-card {
  padding: 18px 20px;
  background: var(--bg-page);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.rhythm-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
}

.rhythm-desc {
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-sub);
}

.rhythm-meta {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 12px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
}

.rhythm-meta dt {
  color: var(--text-muted);
}

.rhythm-meta dd {
  color: var(--text-main);
}

/* ============ pages: ranking ============ */

.ranking-section {
  margin-bottom: 44px;
}

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

.ranking-item {
  display: grid;
  grid-template-columns: 40px 72px minmax(0, 1fr);
  align-items: start;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
}

.ranking-position {
  padding-top: 4px;
  font-size: 18px;
  font-weight: 600;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.ranking-cover {
  width: 72px;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  border-radius: var(--radius-sm);
  background: var(--bg-soft);
}

.ranking-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.ranking-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
}

.ranking-name a:hover {
  color: var(--accent);
}

.ranking-genre {
  margin-top: 6px;
  font-size: 13px;
  color: var(--text-sub);
}

.ranking-note {
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-sub);
}

.ranking-notes-section {
  margin-bottom: 44px;
}

.notes-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  padding: 20px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.notes-col {
  min-width: 0;
  font-size: 14px;
  color: var(--text-sub);
}

.notes-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 10px;
}

.notes-list li {
  position: relative;
  padding-left: 16px;
}

.notes-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

.featured-section {
  margin-bottom: 44px;
}

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

.featured-section .featured-card {
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden;
  background: var(--bg-page);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.featured-media {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-soft);
}

.featured-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.featured-section .featured-name,
.featured-section .featured-desc,
.featured-section .featured-scope,
.featured-section .featured-link {
  padding: 0 18px;
}

.featured-section .featured-name {
  margin-top: 16px;
}

.featured-link {
  align-self: flex-start;
  margin-top: 12px;
  margin-bottom: 18px;
  font-size: 14px;
  color: var(--accent);
}

.featured-link:hover {
  color: var(--accent-dark);
}

.ranking-path-section {
  margin-bottom: 8px;
}

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

.path-col {
  padding: 18px 20px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.path-subtitle {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
}

.path-col p {
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-sub);
}

.path-link {
  display: inline-block;
  margin-top: 12px;
  font-size: 14px;
  color: var(--accent);
}

.path-link:hover {
  color: var(--accent-dark);
}

/* ============ pages: guide ============ */

.guide-section {
  margin-bottom: 44px;
}

.glossary-layout {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(0, 1.4fr);
  gap: 28px;
  align-items: start;
}

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

.glossary-figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.glossary-figure figcaption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--text-muted);
  background: var(--bg-page);
  border-top: 1px solid var(--line);
}

.glossary-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 24px;
  border-top: 1px solid var(--line);
}

.glossary-item {
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
}

.glossary-term {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
}

.glossary-desc {
  margin-top: 4px;
  font-size: 14px;
  color: var(--text-sub);
}

.order-steps {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  counter-reset: order-step;
}

.order-step {
  position: relative;
  padding: 18px 20px 18px 56px;
  background: var(--bg-page);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.order-step-no {
  position: absolute;
  left: 18px;
  top: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 50%;
}

.order-step-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
}

.order-step-desc {
  margin-top: 6px;
  font-size: 14px;
  color: var(--text-sub);
}

.order-step-desc a {
  color: var(--accent);
}

.order-step-desc a:hover {
  color: var(--accent-dark);
}

.order-limits {
  margin-top: 24px;
  padding: 18px 20px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.limit-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 24px;
}

.limit-item {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  color: var(--text-sub);
}

.limit-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background: var(--warn);
  border-radius: 50%;
}

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

.feedback-card {
  display: flex;
  flex-direction: column;
  padding: 18px 20px;
  background: var(--bg-page);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.feedback-card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
}

.feedback-card-desc {
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-sub);
}

.feedback-card-need {
  margin-top: 10px;
  font-size: 13px;
  color: var(--text-sub);
}

.feedback-card-rule {
  margin-top: 8px;
  padding-top: 10px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  color: var(--text-muted);
}

.feedback-note {
  margin-top: 16px;
  padding: 14px 18px;
  font-size: 14px;
  color: var(--text-sub);
  background: var(--bg-soft);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
}

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

.faq-item {
  background: var(--bg-page);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 48px;
  padding: 12px 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  flex: 0 0 auto;
  font-size: 18px;
  font-weight: 400;
  color: var(--accent);
}

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

.faq-answer {
  padding: 0 18px 16px;
  font-size: 14px;
  color: var(--text-sub);
  border-top: 1px solid var(--line-soft);
  padding-top: 12px;
}

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

.next-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.next-link:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.next-link-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
}

.next-link-desc {
  font-size: 13px;
  color: var(--text-sub);
}

/* ============ pages: 404 ============ */

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

.error-hero {
  max-width: 720px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--line);
}

.error-code {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.error-title {
  margin-top: 10px;
  font-size: 30px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--text-main);
}

.error-desc {
  margin-top: 14px;
  font-size: 15px;
  color: var(--text-sub);
}

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

.error-paths {
  padding-top: 40px;
}

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

.error-path-item {
  padding: 16px 18px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.error-path-link {
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
}

.error-path-link:hover {
  color: var(--accent-dark);
}

.error-path-desc {
  margin-top: 6px;
  font-size: 14px;
  color: var(--text-sub);
}

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

@media (max-width: 1024px) {
  .genre-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cover-update,
  .ranking-featured,
  .guide-feedback {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .update-column,
  .featured-column,
  .feedback-column {
    padding-left: 0;
    border-left: 0;
    padding-top: 28px;
    border-top: 1px solid var(--line);
  }

  .genre-row {
    grid-template-columns: 88px minmax(0, 1fr);
  }

  .genre-row-head {
    display: none;
  }

  .genre-cell-name,
  .genre-cell-scope,
  .genre-cell-works,
  .genre-cell-adjacent {
    grid-column: 2;
  }

  .genre-thumb {
    grid-row: 1 / span 4;
  }

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

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

@media (max-width: 768px) {
  .header-inner {
    padding: 10px 16px;
  }

  .nav-toggle {
    display: flex;
  }

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

  .nav-list {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px 16px 12px;
    background: var(--bg-page);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 8px 16px rgba(36, 40, 46, 0.06);
  }

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

  .nav-link {
    min-height: 44px;
    display: flex;
    align-items: center;
    padding: 10px 12px;
  }

  .site-main {
    padding: 0 16px 48px;
  }

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

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

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

  .hero-panel {
    padding: 16px;
  }

  .content-media-primary {
    aspect-ratio: 16 / 9;
  }

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

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

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

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

  .scope-notes-grid,
  .adjacent-grid,
  .record-notes,
  .notes-grid,
  .rhythm-grid,
  .featured-grid,
  .path-grid,
  .feedback-grid,
  .error-path-list {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

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

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

  .update-body {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .update-body .update-genre,
  .update-body .update-type {
    grid-column: 1;
    grid-row: auto;
    justify-self: start;
  }

  .update-list-section .update-row {
    grid-template-columns: 60px minmax(0, 1fr);
    gap: 10px 14px;
  }

  .update-thumb {
    width: 60px;
  }

  .ranking-item {
    grid-template-columns: 32px 60px minmax(0, 1fr);
    gap: 12px;
  }

  .ranking-cover {
    width: 60px;
  }

  .ranking-position {
    font-size: 16px;
  }

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

  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
    padding: 32px 16px 20px;
  }

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

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

@media (max-width: 480px) {
  .cover-grid {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

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

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

  .genre-thumb,
  .genre-cell-name,
  .genre-cell-scope,
  .genre-cell-works,
  .genre-cell-adjacent {
    grid-column: 1;
  }

  .genre-thumb {
    grid-row: auto;
    width: 100%;
    max-width: 180px;
    aspect-ratio: 4 / 3;
  }

  .ranking-item {
    grid-template-columns: 28px minmax(0, 1fr);
  }

  .ranking-cover {
    grid-row: 1 / span 3;
    grid-column: 2;
    width: 100%;
    max-width: 160px;
    aspect-ratio: 4 / 3;
  }

  .ranking-position {
    grid-column: 1;
  }

  .ranking-body {
    grid-column: 2;
  }

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

  .update-thumb {
    grid-row: auto;
    width: 100%;
    max-width: 160px;
    aspect-ratio: 4 / 3;
  }

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

  .field-list dd {
    margin-bottom: 8px;
  }

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