:root {
  --paper: #faf6ef;
  --ink: #1f1c19;
  --ink-soft: #4a423a;
  --brown: #8a7a63;
  --brown-light: #c9bda9;
  --vermilion: #c4553f;
  --pine: #3f6b5a;
  --line: #ded4c4;
  --card-bg: #fffdf8;
  --radius: 6px;
  --radius-sm: 4px;
  --shadow-card: 0 1px 2px rgba(31, 28, 25, 0.06);
  --shadow-lift: 0 4px 14px rgba(31, 28, 25, 0.1);
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-serif: Georgia, "Songti SC", "SimSun", "Times New Roman", serif;
  --wrap: 1120px;
  --read: 760px;
  --gap: 24px;
}

/* ============================================================
   base — 基础重置与全站骨架
   ============================================================ */

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

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

body {
  margin: 0;
  padding: 0;
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

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

a:hover,
a:focus-visible {
  color: #a13d2b;
}

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

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--font-serif);
  color: var(--ink);
  font-weight: 700;
  line-height: 1.4;
}

p {
  margin: 0;
}

figure {
  margin: 0;
}

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

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

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

/* 全站骨架：页头 */

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

.header-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: 21px;
  font-weight: 700;
  letter-spacing: 0.01em;
  padding: 6px 0;
}

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

.brand-mark {
  width: 26px;
  height: 26px;
  flex: 0 0 26px;
  border-radius: 50%;
  background-color: var(--vermilion);
  position: relative;
  display: inline-block;
}

.brand-mark::before {
  content: "";
  position: absolute;
  inset: 7px 7px auto auto;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: var(--paper);
}

.brand-mark::after {
  content: "";
  position: absolute;
  left: 7px;
  bottom: 6px;
  width: 12px;
  height: 2px;
  background-color: var(--paper);
}

.brand-text {
  display: inline-block;
}

/* 全站骨架：导航 */

.site-nav {
  display: flex;
  align-items: center;
}

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

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

.nav-link {
  display: inline-block;
  padding: 10px 14px;
  font-size: 15px;
  color: var(--ink-soft);
  border-radius: var(--radius-sm);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--vermilion);
  background-color: rgba(196, 85, 63, 0.06);
}

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

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  position: relative;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px auto;
  background-color: var(--ink);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* 全站骨架：主区域与容器 */

.site-main {
  display: block;
}

.section-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}

.container {
  max-width: var(--read);
  margin: 0 auto;
  padding: 0 24px;
}

.inner-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px 64px;
}

/* 全站骨架：面包屑与页面标题区 */

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 22px 0 0;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--brown);
}

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

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  color: var(--vermilion);
}

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

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

.page-header {
  padding: 18px 0 30px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 36px;
}

.page-title {
  font-size: 32px;
  line-height: 1.3;
  color: var(--ink);
}

.page-description {
  margin-top: 12px;
  max-width: var(--read);
  font-size: 16px;
  color: var(--ink-soft);
}

/* 全站骨架：页脚 */

.site-footer {
  margin-top: 64px;
  background-color: #f3ece1;
  border-top: 1px solid var(--line);
}

.footer-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 44px 24px 32px;
  display: grid;
  grid-template-columns: minmax(240px, 1.4fr) repeat(3, minmax(150px, 1fr));
  gap: 32px;
}

.footer-brand-name {
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
}

.footer-brand-desc {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--brown);
  max-width: 320px;
}

.footer-group-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.06em;
  margin-bottom: 14px;
}

.footer-list li + li {
  margin-top: 10px;
}

.footer-list a {
  font-size: 14px;
  color: var(--ink-soft);
  display: inline-block;
  padding: 3px 0;
}

.footer-list a:hover,
.footer-list a:focus-visible {
  color: var(--vermilion);
}

.footer-bottom {
  border-top: 1px solid var(--line);
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 18px 24px 30px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.footer-note,
.footer-copy {
  font-size: 13px;
  color: var(--brown);
  line-height: 1.7;
}

/* ============================================================
   layout — 通用分栏与版块头部
   ============================================================ */

.section-head {
  margin-bottom: 26px;
}

.section-title {
  font-size: 22px;
  line-height: 1.4;
  color: var(--ink);
}

.section-desc {
  margin-top: 8px;
  font-size: 15px;
  color: var(--brown);
  max-width: var(--read);
}

.section-text {
  font-size: 16px;
  color: var(--ink-soft);
  max-width: var(--read);
}

.section-intro {
  margin-top: 8px;
  font-size: 15px;
  color: var(--brown);
  max-width: var(--read);
}

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

.split-columns {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

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

.col-head {
  margin-bottom: 16px;
}

.col-title {
  font-size: 19px;
  color: var(--ink);
}

.col-desc {
  margin-top: 6px;
  font-size: 14px;
  color: var(--brown);
}

.col-more {
  display: inline-block;
  margin-top: 18px;
  font-size: 14px;
  color: var(--vermilion);
  border-bottom: 1px solid rgba(196, 85, 63, 0.4);
  padding-bottom: 2px;
}

.col-more:hover,
.col-more:focus-visible {
  color: #a13d2b;
  border-bottom-color: #a13d2b;
}

/* ============================================================
   components — 通用小组件
   ============================================================ */

.tag {
  display: inline-block;
  padding: 2px 9px;
  font-size: 12px;
  line-height: 1.6;
  border-radius: 3px;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.tag-genre {
  color: var(--pine);
  background-color: rgba(63, 107, 90, 0.1);
}

.tag-status {
  color: var(--vermilion);
  background-color: rgba(196, 85, 63, 0.1);
}

.btn {
  display: inline-block;
  padding: 11px 22px;
  font-size: 15px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  min-height: 44px;
  line-height: 1.4;
}

.btn-primary {
  background-color: var(--vermilion);
  color: #fffdf8;
  border-color: var(--vermilion);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: #a13d2b;
  border-color: #a13d2b;
  color: #fffdf8;
}

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

.btn-ghost:hover,
.btn-ghost:focus-visible {
  color: var(--vermilion);
  border-color: var(--vermilion);
}

/* ============================================================
   pages — 首页 index.html
   ============================================================ */

.home-main {
  display: block;
}

.hero-section {
  border-bottom: 1px solid var(--line);
  padding: 52px 0 56px;
}

.hero-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: 48px;
  align-items: center;
}

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

.hero-eyebrow {
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--brown);
  text-transform: uppercase;
}

.hero-title {
  margin-top: 14px;
  font-size: 40px;
  line-height: 1.28;
  color: var(--ink);
}

.hero-summary {
  margin-top: 18px;
  font-size: 16px;
  color: var(--ink-soft);
  max-width: 560px;
}

.hero-paths {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

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

.hero-path a {
  display: block;
  height: 100%;
  padding: 14px 16px;
  background-color: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
}

.hero-path a:hover,
.hero-path a:focus-visible {
  border-color: var(--vermilion);
  color: var(--ink);
  box-shadow: var(--shadow-lift);
  transform: translateY(-2px);
}

.hero-path-title {
  display: block;
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
}

.hero-path-desc {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--brown);
  line-height: 1.6;
}

.hero-visual {
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: 16px;
  align-items: stretch;
}

.hero-figure {
  background-color: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.hero-figure img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

.hero-figure figcaption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--brown);
  border-top: 1px solid var(--line);
}

.hero-covers {
  display: grid;
  grid-template-rows: 1fr 1fr;
  gap: 16px;
  min-width: 0;
}

.hero-cover {
  background-color: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.hero-cover img {
  width: 100%;
  height: 100%;
  min-height: 140px;
  object-fit: cover;
  flex: 1 1 auto;
}

.hero-cover figcaption {
  padding: 8px 12px;
  font-size: 12px;
  color: var(--brown);
  border-top: 1px solid var(--line);
}

/* 题材方向总览 */

.genre-overview {
  padding: 56px 0;
  border-bottom: 1px solid var(--line);
}

.genre-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.genre-card {
  min-width: 0;
  padding: 22px 20px 24px;
  background-color: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
}

.genre-index {
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--brown);
}

.genre-name {
  margin-top: 10px;
  font-size: 19px;
  color: var(--ink);
}

.genre-trait {
  margin-top: 10px;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
  flex: 1 1 auto;
}

.genre-count {
  margin-top: 14px;
  font-size: 13px;
  color: var(--brown);
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}

.genre-link {
  display: inline-block;
  margin-top: 14px;
  font-size: 14px;
  color: var(--vermilion);
  min-height: 32px;
  line-height: 32px;
}

.genre-link:hover,
.genre-link:focus-visible {
  color: #a13d2b;
}

/* 封面墙与作品条目 */

.cover-wall {
  padding: 56px 0;
  border-bottom: 1px solid var(--line);
}

.cover-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.cover-card {
  min-width: 0;
  background-color: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  padding: 0 0 16px;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.cover-card:hover {
  transform: translateY(-3px);
  border-color: var(--brown);
  box-shadow: var(--shadow-lift);
}

.cover-figure {
  width: 100%;
  overflow: hidden;
  background-color: #efe7db;
}

.cover-figure img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.cover-card:nth-child(3n + 2) .cover-figure img {
  height: 300px;
}

.cover-card:nth-child(3n) .cover-figure img {
  height: 230px;
}

.cover-name {
  margin: 14px 18px 0;
  font-size: 17px;
  color: var(--ink);
}

.cover-genre {
  margin: 8px 18px 0;
  font-size: 13px;
  color: var(--pine);
  letter-spacing: 0.04em;
}

.cover-progress {
  margin: 8px 18px 0;
  font-size: 13px;
  color: var(--brown);
}

/* 最近更新与人气榜单并列 */

.updates-ranking {
  padding: 56px 0;
  border-bottom: 1px solid var(--line);
}

.updates-col .update-list,
.ranking-col .rank-list {
  border-top: 1px solid var(--line);
}

.update-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}

.update-date {
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--brown);
  flex: 0 0 88px;
}

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

.update-progress {
  font-size: 13px;
  color: var(--pine);
  margin-left: auto;
}

.rank-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}

.rank-no {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 700;
  color: var(--vermilion);
  flex: 0 0 30px;
}

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

.rank-reason {
  width: 100%;
  padding-left: 40px;
  font-size: 13px;
  color: var(--brown);
  line-height: 1.7;
}

/* 阅读说明与收录边界摘要 */

.guide-summary {
  padding: 56px 0;
  border-bottom: 1px solid var(--line);
}

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

.field-item,
.boundary-item {
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.field-name {
  font-weight: 600;
  color: var(--ink);
  margin-right: 6px;
}

/* 站内栏目索引 */

.site-index {
  padding: 56px 0 8px;
}

.index-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
}

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

.index-item a {
  display: block;
  height: 100%;
  padding: 18px 16px;
  background-color: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
}

.index-item a:hover,
.index-item a:focus-visible {
  border-color: var(--vermilion);
  color: var(--ink);
  box-shadow: var(--shadow-lift);
}

.index-name {
  display: block;
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
}

.index-desc {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  color: var(--brown);
  line-height: 1.65;
}

/* ============================================================
   pages — 题材分类 yhdm/genre.html
   ============================================================ */

.genre-intro,
.genre-groups,
.genre-boundary {
  margin-bottom: 48px;
}

.genre-intro-list {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.genre-intro-item {
  padding: 16px 18px;
  background-color: var(--card-bg);
  border: 1px solid var(--line);
  border-left: 3px solid var(--pine);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.genre-group {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 240px;
  grid-template-areas:
    "title figure"
    "desc figure"
    "list figure";
  gap: 14px 32px;
  padding: 28px 0;
  border-top: 1px solid var(--line);
}

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

.genre-group-title {
  grid-area: title;
  font-size: 20px;
  color: var(--ink);
}

.genre-group-index {
  display: inline-block;
  margin-right: 10px;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--brown);
}

.genre-group-desc {
  grid-area: desc;
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.8;
  max-width: 640px;
}

.genre-group-figure {
  grid-area: figure;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background-color: #efe7db;
  align-self: start;
}

.genre-group-figure img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.genre-work-list {
  grid-area: list;
  margin-top: 6px;
  border-top: 1px dashed var(--line);
}

.genre-work-item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 15px;
}

.genre-work-name {
  color: var(--ink);
  font-weight: 600;
  min-width: 0;
}

.genre-work-progress {
  font-size: 13px;
  color: var(--pine);
  white-space: nowrap;
}

.genre-boundary-list {
  margin-top: 18px;
  border-top: 1px solid var(--line);
}

.genre-boundary-item {
  padding: 12px 0 12px 20px;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.75;
  position: relative;
}

.genre-boundary-item::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 21px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--brown-light);
}

.genre-boundary-more {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
}

.genre-boundary-more a {
  font-size: 14px;
  color: var(--vermilion);
  min-height: 32px;
  line-height: 32px;
}

/* ============================================================
   pages — 最近更新 yhdm/updates.html
   ============================================================ */

.updates-intro,
.updates-log,
.updates-legend {
  margin-bottom: 48px;
}

.updates-figure {
  margin-top: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background-color: #efe7db;
}

.updates-figure img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

.updates-figure figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--brown);
  border-top: 1px solid var(--line);
  background-color: var(--card-bg);
}

.updates-intro-text {
  margin-top: 18px;
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.85;
}

.updates-intro-text a {
  color: var(--vermilion);
  border-bottom: 1px solid rgba(196, 85, 63, 0.4);
}

.updates-day {
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.updates-day:last-child {
  border-bottom: 1px solid var(--line);
}

.updates-day-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 12px;
}

.updates-day-title {
  font-size: 18px;
  color: var(--ink);
}

.updates-day-count {
  font-size: 13px;
  color: var(--brown);
}

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

.updates-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 14px;
  background-color: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.updates-thumb {
  flex: 0 0 64px;
  width: 64px;
  height: 64px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-color: #efe7db;
}

.updates-thumb img {
  width: 64px;
  height: 64px;
  object-fit: cover;
}

.updates-item-body {
  min-width: 0;
  flex: 1 1 auto;
}

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

.updates-item-progress {
  margin-top: 4px;
  font-size: 13px;
  color: var(--pine);
}

.updates-item-meta {
  margin-top: 6px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

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

.legend-item {
  padding: 16px 18px;
  background-color: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.legend-text {
  margin-top: 10px;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
}

/* ============================================================
   pages — 人气榜单 yhdm/ranking.html
   ============================================================ */

.page-layout.ranking-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.9fr) minmax(260px, 1fr);
  gap: 40px;
  align-items: start;
  margin-bottom: 48px;
}

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

.ranking-side {
  min-width: 0;
  padding: 22px 20px;
  background-color: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.ranking-list {
  margin-top: 20px;
  border-top: 1px solid var(--line);
}

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

.rank-index {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--vermilion);
  text-align: center;
}

.rank-cover {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-color: #efe7db;
}

.rank-cover img {
  width: 72px;
  height: 72px;
  object-fit: cover;
}

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

.ranking-item .rank-name {
  font-size: 16px;
  color: var(--ink);
}

.ranking-item .rank-genre {
  margin-top: 4px;
  font-size: 13px;
  color: var(--pine);
}

.ranking-item .rank-reason {
  margin-top: 6px;
  font-size: 13px;
  color: var(--brown);
  line-height: 1.7;
  padding-left: 0;
  width: auto;
}

.reason-list {
  margin-top: 16px;
  border-top: 1px solid var(--line);
}

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

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

.reason-text {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: var(--brown);
  line-height: 1.7;
}

.side-note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--brown);
  line-height: 1.7;
}

.ranking-basis {
  margin-bottom: 48px;
}

.basis-list {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.basis-item {
  padding: 18px 20px;
  background-color: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.basis-name {
  font-size: 16px;
  color: var(--ink);
}

.basis-text {
  margin-top: 10px;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.basis-foot {
  margin-top: 22px;
  font-size: 14px;
}

.basis-foot a {
  color: var(--vermilion);
  min-height: 32px;
  line-height: 32px;
  display: inline-block;
}

/* ============================================================
   pages — 阅读说明 yhdm/guide.html
   ============================================================ */

.guide-visual,
.guide-fields,
.guide-scope,
.guide-paths,
.guide-faq,
.guide-feedback {
  margin-bottom: 48px;
}

.guide-figure {
  margin-top: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background-color: #efe7db;
}

.guide-figure img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

.guide-figure-caption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--brown);
  border-top: 1px solid var(--line);
  background-color: var(--card-bg);
}

.field-table {
  margin-top: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-color: var(--card-bg);
}

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

.field-table th,
.field-table td {
  padding: 13px 16px;
  font-size: 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
  line-height: 1.75;
}

.field-table thead th {
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--ink);
  background-color: #f3ece1;
  letter-spacing: 0.04em;
}

.field-table tbody th {
  width: 22%;
  font-weight: 600;
  color: var(--ink);
  white-space: nowrap;
}

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

.scope-columns {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.scope-column {
  padding: 20px 22px;
  background-color: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.scope-included {
  border-top: 3px solid var(--pine);
}

.scope-excluded {
  border-top: 3px solid var(--vermilion);
}

.scope-title {
  font-size: 17px;
  color: var(--ink);
}

.scope-list {
  margin-top: 14px;
}

.scope-list li {
  padding: 9px 0 9px 18px;
  position: relative;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
  border-bottom: 1px dashed var(--line);
}

.scope-list li:last-child {
  border-bottom: 0;
}

.scope-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--brown-light);
}

.path-steps {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.path-step {
  padding: 20px;
  background-color: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.path-step .step-index {
  display: inline-block;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--vermilion);
}

.path-step .step-title {
  margin-top: 8px;
  font-size: 16px;
  color: var(--ink);
}

.path-step .step-desc {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.path-step .step-desc a {
  color: var(--vermilion);
}

.faq-list {
  margin-top: 20px;
  border-top: 1px solid var(--line);
}

.faq-item {
  border-bottom: 1px solid var(--line);
}

.faq-question {
  padding: 16px 32px 16px 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  position: relative;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--brown);
}

.faq-item[open] .faq-question::after {
  content: "−";
  color: var(--vermilion);
}

.faq-answer {
  padding: 0 32px 18px 0;
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.85;
}

.feedback-list {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.feedback-item {
  padding: 18px 20px;
  background-color: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.feedback-title {
  font-size: 16px;
  color: var(--ink);
}

.feedback-desc {
  margin-top: 10px;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.feedback-note {
  margin-top: 20px;
  font-size: 14px;
  color: var(--brown);
  line-height: 1.8;
}

.feedback-note a {
  color: var(--vermilion);
  border-bottom: 1px solid rgba(196, 85, 63, 0.4);
}

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

.error-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}

.error-panel {
  max-width: var(--read);
  margin: 0 auto;
  padding: 72px 0 80px;
  text-align: center;
}

.error-code {
  font-family: var(--font-serif);
  font-size: 64px;
  line-height: 1;
  color: var(--brown-light);
}

.error-panel h1 {
  margin-top: 18px;
  font-size: 30px;
  color: var(--ink);
}

.error-text {
  margin-top: 14px;
  font-size: 16px;
  color: var(--ink-soft);
}

.error-actions {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.error-links {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 24px;
}

.error-links a {
  font-size: 14px;
  color: var(--vermilion);
  min-height: 32px;
  line-height: 32px;
}

/* ============================================================
   responsive — 移动端与平板适配
   ============================================================ */

@media (max-width: 1024px) {
  .hero-inner {
    gap: 32px;
  }

  .hero-title {
    font-size: 34px;
  }

  .genre-grid {
    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));
  }

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

  .page-layout.ranking-layout {
    grid-template-columns: minmax(0, 1.6fr) minmax(240px, 1fr);
    gap: 28px;
  }
}

@media (max-width: 900px) {
  .genre-group {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "title"
      "figure"
      "desc"
      "list";
    gap: 14px;
  }

  .genre-group-figure img {
    height: 220px;
  }

  .genre-intro-list,
  .legend-list,
  .basis-list,
  .path-steps,
  .feedback-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 768px) {
  body {
    font-size: 15px;
  }

  .header-inner {
    min-height: 60px;
    padding: 0 16px;
    gap: 12px;
  }

  .brand {
    font-size: 19px;
  }

  .nav-toggle {
    display: block;
    flex: 0 0 44px;
  }

  .site-nav {
    display: block;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background-color: var(--paper);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-card);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 16px 14px;
  }

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

  .nav-link {
    display: block;
    padding: 13px 8px;
    min-height: 44px;
    line-height: 1.5;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
  }

  .nav-link.is-current {
    border-bottom-color: var(--line);
    background-color: rgba(196, 85, 63, 0.07);
  }

  .section-inner,
  .container,
  .inner-main,
  .hero-inner,
  .error-main {
    padding-left: 16px;
    padding-right: 16px;
  }

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

  .breadcrumb {
    padding-top: 16px;
  }

  .page-header {
    padding: 14px 0 22px;
    margin-bottom: 28px;
  }

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

  .page-description {
    font-size: 15px;
  }

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

  .hero-section {
    padding: 34px 0 40px;
  }

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

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

  .hero-summary {
    font-size: 15px;
  }

  .hero-paths {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  .hero-visual {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  .hero-figure img {
    height: 220px;
  }

  .hero-covers {
    grid-template-rows: none;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .hero-cover img {
    height: 150px;
    min-height: 0;
  }

  .genre-overview,
  .cover-wall,
  .updates-ranking,
  .guide-summary {
    padding: 40px 0;
  }

  .site-index {
    padding: 40px 0 8px;
  }

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

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

  .cover-figure img,
  .cover-card:nth-child(3n + 2) .cover-figure img,
  .cover-card:nth-child(3n) .cover-figure img {
    height: 190px;
  }

  .cover-name {
    margin: 12px 14px 0;
    font-size: 15px;
  }

  .cover-genre,
  .cover-progress {
    margin-left: 14px;
    margin-right: 14px;
  }

  .split-columns {
    grid-template-columns: minmax(0, 1fr);
    gap: 34px;
  }

  .update-date {
    flex: 0 0 74px;
    font-size: 12px;
  }

  .rank-reason {
    padding-left: 0;
    margin-top: 4px;
  }

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

  .genre-intro-list,
  .legend-list,
  .basis-list,
  .path-steps,
  .feedback-list,
  .scope-columns {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }

  .genre-intro,
  .genre-groups,
  .genre-boundary,
  .updates-intro,
  .updates-log,
  .updates-legend,
  .guide-visual,
  .guide-fields,
  .guide-scope,
  .guide-paths,
  .guide-faq,
  .guide-feedback,
  .ranking-basis {
    margin-bottom: 38px;
  }

  .genre-group {
    padding: 22px 0;
  }

  .genre-group-figure img,
  .updates-figure img,
  .guide-figure img {
    height: 190px;
  }

  .updates-item {
    gap: 12px;
    padding: 12px;
  }

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

  .updates-thumb {
    flex: 0 0 56px;
  }

  .ranking-item {
    grid-template-columns: 32px 60px minmax(0, 1fr);
    gap: 12px;
    padding: 14px 0;
  }

  .rank-index {
    font-size: 17px;
  }

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

  .ranking-side {
    padding: 18px 16px;
  }

  .field-table th,
  .field-table td {
    padding: 11px 12px;
    font-size: 13px;
  }

  .field-table tbody th {
    white-space: normal;
    width: 30%;
  }

  .faq-question {
    font-size: 15px;
    padding-right: 28px;
  }

  .faq-answer {
    font-size: 14px;
  }

  .error-panel {
    padding: 48px 0 56px;
  }

  .error-code {
    font-size: 48px;
  }

  .error-panel h1 {
    font-size: 22px;
  }

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

  .error-actions .btn {
    text-align: center;
  }

  .site-footer {
    margin-top: 48px;
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
    padding: 32px 16px 24px;
  }

  .footer-brand {
    grid-column: auto;
  }

  .footer-brand-desc {
    max-width: none;
  }

  .footer-bottom {
    padding: 16px 16px 26px;
    flex-direction: column;
    gap: 6px;
  }
}

@media (max-width: 420px) {
  .cover-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .cover-figure img,
  .cover-card:nth-child(3n + 2) .cover-figure img,
  .cover-card:nth-child(3n) .cover-figure img {
    height: 220px;
  }

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

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

  .ranking-item {
    grid-template-columns: 28px 56px minmax(0, 1fr);
    gap: 10px;
  }

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

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}