/* ==========================================================================
   漫蛙网页 chaiju365.com — 全站样式表
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base：变量、重置、排版基准
   -------------------------------------------------------------------------- */
:root {
  --c-page: #ffffff;
  --c-ink: #111111;
  --c-text: #3a3a3a;
  --c-muted: #6b6b6b;
  --c-soft: #f5f5f3;
  --c-line: #e3e3df;
  --c-accent: #ff3f6c;
  --c-accent-deep: #d41f4a;
  --font-stack: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --shell: 1120px;
  --shell-narrow: 760px;
  --radius-s: 4px;
  --radius-m: 8px;
  --ease: 160ms ease;
}

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

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

body {
  margin: 0;
  background: var(--c-page);
  color: var(--c-text);
  font-family: var(--font-stack);
  font-size: 15px;
  line-height: 1.75;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--c-ink);
}

h1 {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 700;
  line-height: 1.25;
}

h2 {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.35;
}

h3 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
}

p {
  margin: 0;
}

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

a {
  color: var(--c-ink);
  text-decoration: none;
  transition: color var(--ease);
}

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

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

figure {
  margin: 0;
}

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

time {
  color: var(--c-muted);
  font-size: 13px;
}

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

/* --------------------------------------------------------------------------
   layout：全站骨架 —— 页头 / 导航 / 主容器 / 面包屑 / 页标题 / 页脚
   -------------------------------------------------------------------------- */
.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background: var(--c-page);
}

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

.site-header.is-stuck {
  border-bottom-color: var(--c-line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 24px;
  min-height: 64px;
}

.brand {
  flex: 0 0 auto;
  color: var(--c-ink);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0;
}

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

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

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 26px;
}

.nav-link {
  display: inline-block;
  padding: 6px 0;
  color: var(--c-ink);
  font-size: 15px;
  border-bottom: 2px solid transparent;
}

.nav-link:hover {
  color: var(--c-accent-deep);
  border-bottom-color: var(--c-accent-deep);
}

.nav-link.is-current {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
}

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

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  margin: 0 auto;
  background: var(--c-ink);
}

.mobile-drawer {
  border-top: 1px solid var(--c-line);
  background: var(--c-page);
}

.mobile-drawer[hidden] {
  display: none;
}

.mobile-drawer nav ul {
  display: flex;
  flex-direction: column;
}

.mobile-drawer .nav-link {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 0 24px;
  border-bottom: 1px solid var(--c-line);
  border-left: 3px solid transparent;
}

.mobile-drawer .nav-link.is-active {
  color: var(--c-accent);
  border-left-color: var(--c-accent);
}

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

.inner-main {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 24px 24px 64px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--c-muted);
}

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

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

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

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

.page-header {
  margin-top: 14px;
}

.page-title {
  margin: 0;
  color: var(--c-ink);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 700;
  line-height: 1.25;
}

.page-lead {
  max-width: 42em;
  margin-top: 12px;
  color: var(--c-text);
}

.inner-main > .page-title,
.inner-main > .page-header + .page-title {
  padding-bottom: 18px;
  border-bottom: 1px solid var(--c-line);
}

.page-header + .page-title,
.page-header + .page-lead {
  border-bottom: 1px solid var(--c-line);
  padding-bottom: 18px;
}

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

.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 40px;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 40px 24px 28px;
}

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

.footer-brand {
  margin-bottom: 8px;
  color: var(--c-ink);
  font-size: 17px;
  font-weight: 700;
}

.footer-desc {
  color: var(--c-muted);
  font-size: 13px;
  line-height: 1.7;
}

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

.footer-nav ul,
.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-nav a,
.footer-links a {
  color: var(--c-text);
  font-size: 13px;
}

.footer-nav a:hover,
.footer-links a:hover {
  color: var(--c-accent-deep);
}

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

.footer-bottom p {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 16px 24px;
  color: var(--c-muted);
  font-size: 13px;
}

/* 通用两栏/单栏布局骨架 */
.page-layout {
  display: grid;
  gap: 48px;
  margin-top: 32px;
}

.page-layout.layout-shell {
  grid-template-columns: minmax(0, 1fr) 300px;
}

.page-layout.sidebar-left {
  grid-template-columns: 240px minmax(0, 1fr);
}

.page-layout.timeline-layout {
  grid-template-columns: minmax(0, 1fr);
  max-width: var(--shell-narrow);
  margin-left: auto;
  margin-right: auto;
}

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

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

/* --------------------------------------------------------------------------
   components：按钮、标签、卡片、列表、表格、FAQ、通用区块
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: var(--radius-s);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition: background-color var(--ease), color var(--ease), border-color var(--ease), transform var(--ease);
}

.btn-primary {
  background: var(--c-accent);
  border-color: var(--c-accent);
  color: #ffffff;
}

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

.btn-primary:active {
  transform: translateY(1px);
}

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

.btn-ghost:hover {
  border-color: var(--c-accent);
  color: var(--c-accent-deep);
}

.btn-ghost:active {
  transform: translateY(1px);
}

.tag {
  display: inline-block;
  padding: 1px 8px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-s);
  color: var(--c-muted);
  font-size: 12px;
  line-height: 1.6;
  white-space: nowrap;
}

.tag-genre {
  border-color: var(--c-accent);
  color: var(--c-accent-deep);
}

.tag-status {
  color: var(--c-muted);
}

.link-arrow {
  display: inline-block;
  color: var(--c-accent-deep);
  font-size: 14px;
  font-weight: 600;
}

.link-arrow::after {
  content: " ›";
}

.link-arrow:hover {
  color: var(--c-accent);
  text-decoration: underline;
}

.section-title {
  position: relative;
  padding-left: 12px;
}

.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.22em;
  width: 3px;
  height: 0.9em;
  background: var(--c-accent);
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 20px;
}

.section-note {
  max-width: 46em;
  color: var(--c-muted);
  font-size: 13px;
}

.section-block {
  margin-top: 56px;
}

.section-block > h2 {
  position: relative;
  padding-left: 12px;
  margin-bottom: 12px;
}

.section-block > h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.22em;
  width: 3px;
  height: 0.9em;
  background: var(--c-accent);
}

.section-block > p {
  max-width: 46em;
  margin-bottom: 20px;
}

/* 封面卡（首页 / 题材导航共用） */
.cover-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.cover-card {
  min-width: 0;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-m);
  background: var(--c-page);
  transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
}

.cover-card:hover {
  transform: translateY(-2px);
  border-color: var(--c-accent);
  box-shadow: 0 6px 16px rgba(17, 17, 17, 0.07);
}

.cover-card:active {
  transform: translateY(1px);
}

.cover-card > a {
  display: block;
  height: 100%;
}

.cover-media {
  overflow: hidden;
  border-bottom: 1px solid var(--c-line);
  border-radius: var(--radius-m) var(--radius-m) 0 0;
  background: var(--c-soft);
}

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

.cover-body {
  padding: 12px 14px 14px;
}

.cover-name {
  margin-bottom: 6px;
  font-size: 16px;
}

.cover-tags {
  margin-bottom: 4px;
  color: var(--c-muted);
  font-size: 13px;
}

.cover-chapter {
  color: var(--c-muted);
  font-size: 13px;
}

/* 题材导航内页的封面卡变体 */
.genre-block .cover-card > a {
  display: block;
  padding: 10px;
}

.genre-block .cover-figure {
  overflow: hidden;
  border-radius: var(--radius-s);
  background: var(--c-soft);
}

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

.genre-block .cover-tag,
.genre-block .cover-status,
.genre-block .cover-chapter {
  display: inline-block;
  margin-top: 8px;
  margin-right: 6px;
  color: var(--c-muted);
  font-size: 12px;
}

.genre-block .cover-tag {
  padding: 1px 8px;
  border: 1px solid var(--c-accent);
  border-radius: var(--radius-s);
  color: var(--c-accent-deep);
}

/* 字段释义表 / 规则表 */
.field-table,
.rule-table {
  border: 1px solid var(--c-line);
  font-size: 14px;
}

.field-table caption,
.rule-table caption {
  padding: 10px 14px;
  color: var(--c-muted);
  font-size: 13px;
  text-align: left;
}

.field-table th,
.field-table td,
.rule-table th,
.rule-table td {
  padding: 12px 14px;
  border-top: 1px solid var(--c-line);
  text-align: left;
  vertical-align: top;
}

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

.field-table tbody tr:nth-child(even),
.rule-table tbody tr:nth-child(even) {
  background: var(--c-soft);
}

.field-table tbody th {
  width: 34%;
  color: var(--c-ink);
  font-weight: 600;
}

/* FAQ 折叠项 */
.faq-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--c-line);
}

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

.faq-item summary {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 10px 32px 10px 0;
  color: var(--c-ink);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  position: relative;
}

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

.faq-item summary::after {
  content: "▾";
  position: absolute;
  right: 4px;
  color: var(--c-accent);
  font-size: 13px;
  transition: transform var(--ease);
}

.faq-item[open] summary::after {
  transform: rotate(180deg);
}

.faq-item p {
  padding: 0 40px 16px 0;
  color: var(--c-text);
}

/* 页内锚点条 */
.anchor-bar {
  margin-top: 24px;
  border-bottom: 1px solid var(--c-line);
}

.anchor-bar ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 12px;
}

.anchor-bar a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-s);
  color: var(--c-ink);
  font-size: 14px;
}

.anchor-bar a:hover {
  border-color: var(--c-accent);
  color: var(--c-accent-deep);
}

/* 通用内容区块 */
.content-section {
  margin-top: 56px;
}

.content-section > h2 {
  position: relative;
  padding-left: 12px;
  margin-bottom: 12px;
}

.content-section > h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.22em;
  width: 3px;
  height: 0.9em;
  background: var(--c-accent);
}

.content-section > p {
  max-width: 46em;
  margin-bottom: 20px;
}

/* 滚动进入的轻量增强（不依赖 JS 也能看到内容） */
.reveal {
  opacity: 1;
  transform: none;
}

.reveal.is-in {
  animation: rise-in 320ms ease both;
}

@keyframes rise-in {
  from {
    opacity: 0.001;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

  .reveal.is-in {
    animation: none;
  }

  .cover-card,
  .btn,
  .rank-item,
  .entry-card {
    transition: none;
  }
}

/* --------------------------------------------------------------------------
   pages：首页
   -------------------------------------------------------------------------- */
.home-main {
  display: block;
}

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

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: center;
  gap: 48px;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 48px 24px;
}

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

.hero-lead {
  max-width: 32em;
  margin-top: 16px;
  color: var(--c-text);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.hero-media {
  overflow: hidden;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-m);
  background: var(--c-soft);
}

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

.quick-nav {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 56px 24px 0;
}

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

.quick-cell {
  display: flex;
  flex-direction: column;
  gap: 6px;
  height: 100%;
  padding: 18px 16px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-m);
  background: var(--c-page);
  transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
}

.quick-cell:hover {
  transform: translateY(-2px);
  border-color: var(--c-accent);
  box-shadow: 0 6px 16px rgba(17, 17, 17, 0.07);
}

.quick-icon {
  display: block;
  width: 28px;
  height: 3px;
  background: var(--c-accent);
}

.quick-name {
  color: var(--c-ink);
  font-size: 16px;
  font-weight: 600;
}

.quick-desc {
  color: var(--c-muted);
  font-size: 13px;
}

.cover-wall {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 56px 24px 0;
}

.cover-wall .cover-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  grid-auto-rows: auto;
}

.cover-card-lg {
  grid-column: span 2;
  grid-row: span 2;
}

.cover-card-lg .cover-media img {
  aspect-ratio: 4 / 5;
}

.cover-card-lg .cover-name {
  font-size: 20px;
}

.genre-entry {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 56px 24px 0;
}

.genre-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}

.genre-cell {
  min-width: 0;
  padding-top: 14px;
  border-top: 2px solid var(--c-ink);
}

.genre-name {
  margin-bottom: 6px;
}

.genre-desc {
  margin-bottom: 10px;
  color: var(--c-muted);
  font-size: 13px;
}

.genre-link {
  color: var(--c-accent-deep);
  font-size: 14px;
  font-weight: 600;
}

.genre-link::after {
  content: " ›";
}

.genre-link:hover {
  color: var(--c-accent);
  text-decoration: underline;
}

.recent-update {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 56px 24px 0;
}

.update-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 32px;
  border-top: 1px solid var(--c-line);
}

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

.update-row > a {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 8px 2px;
}

.update-name {
  flex: 1 1 auto;
  min-width: 0;
  color: var(--c-ink);
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.update-chapter {
  flex: 0 0 auto;
  color: var(--c-muted);
  font-size: 13px;
}

.update-time {
  flex: 0 0 auto;
}

.rank-preview {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 56px 24px 0;
}

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

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

.rank-row > a {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 48px;
  padding: 8px 2px;
}

.rank-no {
  flex: 0 0 28px;
  color: var(--c-accent);
  font-size: 16px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.rank-name {
  flex: 1 1 auto;
  min-width: 0;
  color: var(--c-ink);
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.rank-chapter {
  flex: 0 0 auto;
  color: var(--c-muted);
  font-size: 13px;
}

.rank-more {
  margin-top: 14px;
}

.read-summary {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 56px 24px 0;
}

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

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

.read-points {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 20px;
}

.read-points li {
  padding-left: 12px;
  border-left: 2px solid var(--c-line);
}

.read-point-title {
  margin-bottom: 4px;
}

.read-more {
  margin-top: 20px;
}

.read-media {
  overflow: hidden;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-m);
  background: var(--c-soft);
}

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

.next-bar {
  width: 100%;
  max-width: var(--shell);
  margin: 56px auto 0;
  padding: 0 24px 64px;
}

.next-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px;
  border-radius: var(--radius-m);
  background: var(--c-soft);
}

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

.next-text p {
  margin-top: 6px;
  color: var(--c-muted);
  font-size: 13px;
}

/* --------------------------------------------------------------------------
   pages：题材导航
   -------------------------------------------------------------------------- */
.layout-aside .aside-title {
  position: relative;
  padding-left: 12px;
  margin-bottom: 14px;
}

.layout-aside .aside-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.22em;
  width: 3px;
  height: 0.9em;
  background: var(--c-accent);
}

.anchor-list {
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--c-line);
}

.anchor-link {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 10px;
  border-left: 3px solid transparent;
  color: var(--c-text);
  font-size: 14px;
}

.anchor-link:hover,
.anchor-link.is-current {
  border-left-color: var(--c-accent);
  color: var(--c-accent-deep);
}

.aside-note {
  margin-top: 24px;
  padding: 16px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-m);
  background: var(--c-soft);
}

.aside-note-title {
  margin-bottom: 8px;
  font-size: 15px;
}

.aside-note p {
  color: var(--c-muted);
  font-size: 13px;
}

.aside-note-link {
  margin-top: 10px;
}

.genre-block + .genre-block {
  margin-top: 48px;
}

.genre-block > .section-title {
  margin-bottom: 10px;
}

.genre-block > .genre-desc {
  max-width: 46em;
  margin-bottom: 18px;
  color: var(--c-text);
}

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

.entry-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 56px;
}

.entry-card {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-m);
  background: var(--c-page);
}

.entry-card .entry-title {
  margin-bottom: 8px;
}

.entry-card p {
  color: var(--c-text);
  font-size: 14px;
}

.entry-card p + p {
  margin-top: 8px;
  color: var(--c-muted);
  font-size: 13px;
}

/* --------------------------------------------------------------------------
   pages：追更榜单
   -------------------------------------------------------------------------- */
.board-intro {
  display: grid;
  grid-template-columns: minmax(0, 320px) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
  margin-top: 32px;
  padding: 24px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-m);
  background: var(--c-soft);
}

.board-intro-media {
  overflow: hidden;
  border-radius: var(--radius-s);
  background: var(--c-page);
}

.board-intro-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.board-intro-text {
  min-width: 0;
}

.board-intro-text > p {
  margin-top: 10px;
}

.board-intro-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 14px;
}

.board-intro-list li {
  padding-left: 12px;
  border-left: 2px solid var(--c-accent);
  font-size: 14px;
}

.board-intro-list strong {
  color: var(--c-ink);
}

.board-intro-note {
  margin-top: 14px;
  color: var(--c-muted);
  font-size: 13px;
}

.rank-group {
  margin-top: 48px;
}

.rank-group-head {
  margin-bottom: 14px;
}

.rank-group-head h2 {
  position: relative;
  display: inline-block;
  padding: 2px 12px;
  border: 1px solid var(--c-accent);
  border-radius: var(--radius-s);
  color: var(--c-accent-deep);
  font-size: 16px;
}

.rank-group-head p {
  margin-top: 8px;
  color: var(--c-muted);
  font-size: 13px;
}

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

.rank-item {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 64px;
  padding: 10px 2px;
  border-bottom: 1px solid var(--c-line);
  transition: transform var(--ease);
}

.rank-item:hover {
  transform: translateY(-2px);
}

.rank-item:active {
  transform: translateY(1px);
}

.rank-num {
  flex: 0 0 30px;
  color: var(--c-accent);
  font-size: 17px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.rank-thumb {
  flex: 0 0 auto;
  width: 44px;
  height: 58px;
  border-radius: var(--radius-s);
  object-fit: cover;
  background: var(--c-soft);
}

.rank-body {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.rank-body .rank-name {
  flex: 0 1 auto;
  font-size: 15px;
  font-weight: 600;
}

.rank-item .rank-chapter {
  flex: 0 0 auto;
  color: var(--c-muted);
  font-size: 13px;
}

.rank-guide {
  margin-top: 56px;
}

.rank-guide > h2 {
  position: relative;
  padding-left: 12px;
  margin-bottom: 10px;
}

.rank-guide > h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.22em;
  width: 3px;
  height: 0.9em;
  background: var(--c-accent);
}

.rank-guide > p {
  max-width: 46em;
  margin-bottom: 20px;
}

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

.rank-guide-item {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-m);
}

.rank-guide-item h3 {
  margin-bottom: 6px;
}

.rank-guide-item p {
  color: var(--c-muted);
  font-size: 13px;
}

.mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  margin-bottom: 10px;
  border-radius: var(--radius-s);
  font-size: 13px;
  font-weight: 700;
}

.mark-up {
  background: rgba(255, 63, 108, 0.12);
  color: var(--c-accent-deep);
}

.mark-down {
  background: var(--c-soft);
  color: var(--c-muted);
}

.mark-flat {
  border: 1px solid var(--c-line);
  color: var(--c-muted);
}

.board-cross {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 56px;
  padding: 24px;
  border-radius: var(--radius-m);
  background: var(--c-soft);
}

.board-cross-text {
  min-width: 0;
}

.board-cross-text p {
  margin-top: 6px;
  color: var(--c-muted);
  font-size: 13px;
}

/* --------------------------------------------------------------------------
   pages：更新记录
   -------------------------------------------------------------------------- */
.period-anchor {
  margin-bottom: 32px;
}

.period-anchor ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.period-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-s);
  color: var(--c-ink);
  font-size: 14px;
}

.period-link:hover,
.period-link.is-current {
  border-color: var(--c-accent);
  color: var(--c-accent-deep);
}

.timeline-group + .timeline-group {
  margin-top: 48px;
}

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

.group-head h2 {
  position: relative;
  padding-left: 12px;
}

.group-head h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.22em;
  width: 3px;
  height: 0.9em;
  background: var(--c-accent);
}

.group-head p {
  margin-top: 6px;
  color: var(--c-muted);
  font-size: 13px;
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: 16px;
  border-left: 1px solid var(--c-line);
  padding-left: 20px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.timeline-item .time-point {
  padding-top: 14px;
  color: var(--c-accent-deep);
  font-size: 13px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.timeline-item .entry-card {
  display: flex;
  gap: 14px;
  padding: 14px;
  transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
}

.timeline-item .entry-card:hover {
  transform: translateY(-2px);
  border-color: var(--c-accent);
  box-shadow: 0 6px 16px rgba(17, 17, 17, 0.07);
}

.timeline-item .entry-card:active {
  transform: translateY(1px);
}

.timeline-item .entry-card img {
  flex: 0 0 auto;
  width: 56px;
  height: 74px;
  border-radius: var(--radius-s);
  object-fit: cover;
  background: var(--c-soft);
}

.timeline-item .entry-body {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.timeline-item .entry-title {
  font-size: 15px;
}

.timeline-item .entry-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.timeline-item .entry-progress {
  color: var(--c-muted);
  font-size: 13px;
}

.field-reading > ol.field-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.field-step {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-m);
}

.field-step h3 {
  margin-bottom: 6px;
}

.field-step p {
  color: var(--c-muted);
  font-size: 13px;
}

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

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

.rhythm-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 16px;
}

.rhythm-list li {
  padding-left: 12px;
  border-left: 2px solid var(--c-line);
  font-size: 14px;
}

.rhythm-list strong {
  color: var(--c-ink);
}

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

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

.rhythm-figure figcaption {
  padding: 10px 14px;
  color: var(--c-muted);
  font-size: 13px;
}

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

.cross-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-m);
  transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
}

.cross-card:hover {
  transform: translateY(-2px);
  border-color: var(--c-accent);
  box-shadow: 0 6px 16px rgba(17, 17, 17, 0.07);
}

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

.cross-desc {
  color: var(--c-muted);
  font-size: 13px;
}

/* --------------------------------------------------------------------------
   pages：阅读说明
   -------------------------------------------------------------------------- */
.layout-shell .breadcrumb {
  margin-bottom: 0;
}

.content-main .page-header {
  margin-top: 10px;
}

.content-main .page-header + .section {
  margin-top: 32px;
}

.content-main .section + .section {
  margin-top: 56px;
}

.content-main .section > h2 {
  position: relative;
  padding-left: 12px;
  margin-bottom: 12px;
}

.content-main .section > h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.22em;
  width: 3px;
  height: 0.9em;
  background: var(--c-accent);
}

.content-main .section > p {
  max-width: 46em;
}

.content-main .section > p + p {
  margin-top: 10px;
}

.scope-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.scope-tags li {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-s);
  color: var(--c-text);
  font-size: 13px;
}

.section-field-table .field-table {
  margin-top: 18px;
}

.path-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 18px;
}

.path-step {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.path-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--c-accent);
  border-radius: var(--radius-s);
  color: var(--c-accent-deep);
  font-size: 14px;
  font-weight: 700;
}

.path-body {
  min-width: 0;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--c-line);
}

.path-body h3 {
  margin-bottom: 4px;
}

.path-body p {
  color: var(--c-muted);
  font-size: 13px;
}

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

.pitfall-card {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-m);
  background: var(--c-soft);
}

.pitfall-card h3 {
  margin-bottom: 6px;
}

.pitfall-card p {
  color: var(--c-text);
  font-size: 13px;
}

.changelog-list {
  display: flex;
  flex-direction: column;
  margin-top: 18px;
  border-top: 1px solid var(--c-line);
}

.changelog-item {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr);
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--c-line);
}

.changelog-item time {
  color: var(--c-accent-deep);
  font-weight: 600;
}

.changelog-item p {
  color: var(--c-text);
  font-size: 14px;
}

.content-aside {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.aside-card {
  padding: 18px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-m);
  background: var(--c-soft);
}

.aside-card h2 {
  margin-bottom: 12px;
  font-size: 16px;
}

.version-meta {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 12px;
  margin: 0 0 12px;
  font-size: 13px;
}

.version-meta dt {
  color: var(--c-muted);
}

.version-meta dd {
  margin: 0;
  color: var(--c-ink);
}

.aside-card > p {
  color: var(--c-muted);
  font-size: 13px;
}

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

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

.aside-figure figcaption {
  padding: 10px 14px;
  color: var(--c-muted);
  font-size: 13px;
}

.aside-links {
  padding: 18px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-m);
}

.aside-links h2 {
  margin-bottom: 12px;
  font-size: 16px;
}

.aside-links ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

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

.aside-links a:hover {
  color: var(--c-accent-deep);
}

/* --------------------------------------------------------------------------
   pages：内容说明
   -------------------------------------------------------------------------- */
.cover-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 28px;
}

.cover-strip-item {
  overflow: hidden;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-m);
  background: var(--c-soft);
}

.cover-strip-item img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.flow-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  margin-top: 18px;
  counter-reset: flow;
}

.flow-list li {
  position: relative;
  min-width: 0;
  padding: 18px 18px 18px 18px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-m);
  counter-increment: flow;
}

.flow-list li::before {
  content: counter(flow, decimal-leading-zero);
  display: block;
  margin-bottom: 8px;
  color: var(--c-accent);
  font-size: 14px;
  font-weight: 700;
}

.flow-list h3 {
  margin-bottom: 6px;
}

.flow-list p {
  color: var(--c-muted);
  font-size: 13px;
}

.term-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.term-chip {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 14px;
  border: 1px solid var(--c-accent);
  border-radius: var(--radius-s);
  color: var(--c-accent-deep);
  font-size: 13px;
}

.content-section > p .link-arrow {
  margin-right: 12px;
}

/* --------------------------------------------------------------------------
   pages：404
   -------------------------------------------------------------------------- */
.error-main {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 64px 24px;
}

.error-block {
  max-width: 640px;
}

.error-code {
  color: var(--c-accent);
  font-size: 48px;
  font-weight: 700;
  line-height: 1;
}

.error-block h1 {
  margin-top: 12px;
}

.error-desc {
  margin-top: 12px;
  color: var(--c-text);
}

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

.error-paths {
  margin-top: 56px;
}

.error-paths h2 {
  position: relative;
  padding-left: 12px;
  margin-bottom: 16px;
}

.error-paths h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.22em;
  width: 3px;
  height: 0.9em;
  background: var(--c-accent);
}

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

.error-path-list li {
  min-width: 0;
  padding: 16px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-m);
}

.error-path-list a {
  color: var(--c-ink);
  font-weight: 600;
}

.error-path-list p {
  margin-top: 6px;
  color: var(--c-muted);
  font-size: 13px;
}

/* --------------------------------------------------------------------------
   responsive：960px / 640px 断点
   -------------------------------------------------------------------------- */
@media (max-width: 960px) {
  .header-inner {
    padding: 0 16px;
  }

  .site-nav {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .inner-main {
    padding: 20px 16px 56px;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    padding: 32px 16px;
  }

  .hero-media {
    order: -1;
  }

  .quick-nav,
  .cover-wall,
  .genre-entry,
  .recent-update,
  .rank-preview,
  .read-summary {
    padding: 40px 16px 0;
  }

  .next-bar {
    margin-top: 40px;
    padding: 0 16px 48px;
  }

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

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

  .cover-card-lg {
    grid-column: span 2;
    grid-row: auto;
  }

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

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

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

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

  .layout-aside {
    order: 2;
  }

  .layout-main {
    order: 1;
  }

  .anchor-list {
    flex-direction: row;
    flex-wrap: nowrap;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 6px;
    border-left: 0;
    -webkit-overflow-scrolling: touch;
  }

  .anchor-link {
    flex: 0 0 auto;
    min-height: 44px;
    padding: 0 14px;
    border: 1px solid var(--c-line);
    border-radius: var(--radius-s);
  }

  .anchor-link:hover,
  .anchor-link.is-current {
    border-color: var(--c-accent);
  }

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

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

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

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

  .field-reading > ol.field-steps {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

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

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

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

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    padding: 32px 16px 24px;
  }

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

  .error-main {
    padding: 48px 16px;
  }

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

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

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

  .cover-card-lg {
    grid-column: span 2;
  }

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

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

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

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .next-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .board-cross {
    flex-direction: column;
    align-items: flex-start;
  }

  .period-anchor ul {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 6px;
    -webkit-overflow-scrolling: touch;
  }

  .period-link {
    flex: 0 0 auto;
  }

  .timeline {
    padding-left: 14px;
  }

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

  .timeline-item .time-point {
    padding-top: 0;
  }

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

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

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

  .rank-item {
    flex-wrap: wrap;
    gap: 10px;
  }

  .rank-item .rank-chapter {
    flex: 1 1 100%;
    padding-left: 44px;
  }

  .update-row > a {
    flex-wrap: wrap;
  }

  .update-name {
    flex: 1 1 100%;
    white-space: normal;
  }
}