/* ==========================================================================
   漫蛙漫画 · 全站样式表
   基础 / 布局 / 组件 / 页面 / 响应式
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. base —— 变量、重置、排版基调
   -------------------------------------------------------------------------- */
:root {
  --bg-page: #f5f6f7;
  --bg-card: #ffffff;
  --bg-soft: #eef0f1;
  --text-main: #1f2328;
  --text-sub: #5c6570;
  --text-faint: #7b838c;
  --line: #e2e5e8;
  --line-strong: #d2d7db;
  --accent: #2f6f6a;
  --accent-soft: #e6efee;
  --status: #8a6d3b;
  --status-soft: #f3ede2;
  --radius: 6px;
  --radius-sm: 4px;
  --container: 1120px;
  --gap: 20px;
  --shadow-card: 0 1px 2px rgba(31, 35, 40, 0.06);
  --shadow-hover: 0 4px 12px rgba(31, 35, 40, 0.1);
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, "Courier New", monospace;
}

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

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-page);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  font-weight: 400;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-main);
}

p {
  margin: 0;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease, border-color 0.15s ease;
}

a:hover {
  color: #235751;
}

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

figure {
  margin: 0;
}

time {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}

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

/* --------------------------------------------------------------------------
   2. layout —— 全站骨架：页头、导航、主容器、面包屑、页脚
   -------------------------------------------------------------------------- */

/* 顶部事实条 */
.fact-bar {
  background-color: var(--bg-soft);
  border-bottom: 1px solid var(--line);
}

.fact-bar p {
  max-width: var(--container);
  margin: 0 auto;
  padding: 8px 24px;
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.6;
}

/* 页头 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  min-height: 60px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  color: var(--text-main);
  padding: 8px 0;
}

.brand:hover {
  color: var(--text-main);
}

.brand-mark {
  width: 26px;
  height: 26px;
  border-radius: var(--radius-sm);
  background-color: var(--accent);
  position: relative;
  flex: 0 0 auto;
}

.brand-mark::after {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  width: 12px;
  height: 14px;
  border: 2px solid #ffffff;
  border-radius: 2px 6px 6px 2px;
  border-left-width: 4px;
}

.brand-name {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0;
}

/* 主导航 */
.site-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: flex-end;
}

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

.nav-list li {
  display: block;
}

.nav-list a {
  display: block;
  padding: 19px 14px;
  font-size: 15px;
  color: var(--text-sub);
  border-bottom: 2px solid transparent;
  line-height: 1.4;
}

.nav-list a:hover {
  color: var(--text-main);
  border-bottom-color: var(--line-strong);
}

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

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  margin-left: auto;
  background-color: transparent;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  background-color: var(--text-main);
}

/* 主容器 */
.site-main {
  display: block;
}

.home-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 28px 24px 56px;
}

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

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-faint);
  padding: 4px 0 14px;
}

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

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

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

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

/* 内页标题区 */
.page-header {
  padding: 4px 0 24px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 28px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 32px;
}

.page-header-text {
  max-width: 760px;
}

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

.page-description,
.page-summary {
  margin-top: 10px;
  font-size: 15px;
  color: var(--text-sub);
  max-width: 760px;
}

/* 页脚 */
.site-footer {
  background-color: var(--bg-card);
  border-top: 1px solid var(--line);
  margin-top: 8px;
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 36px 24px 24px;
  display: grid;
  grid-template-columns: minmax(220px, 1.4fr) repeat(3, minmax(160px, 1fr));
  gap: 28px 32px;
}

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

.footer-desc {
  margin-top: 8px;
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.7;
}

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

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

.footer-group a {
  font-size: 13px;
  color: var(--text-sub);
}

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

.footer-bottom {
  max-width: var(--container);
  margin: 0 auto;
  padding: 16px 24px 28px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--text-faint);
  line-height: 1.7;
}

/* 通用区块 */
.section {
  margin-top: 40px;
}

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

.section-head h2,
.section-title,
.guide-section > h2,
.updates-list-section > h2,
.status-legend-section > h2,
.rhythm-section > h2,
.column-index-section > h2,
.error-links > h2 {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-main);
}

.section-head p,
.section-lead,
.section-intro {
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-sub);
  max-width: 780px;
}

.section-foot,
.section-next {
  margin-top: 18px;
  font-size: 14px;
}

.section-note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-sub);
}

/* --------------------------------------------------------------------------
   3. components —— 卡片、标签、条目、列表等复用组件
   -------------------------------------------------------------------------- */

/* 题材 / 状态标签 */
.tag,
.tag-genre,
.tag-status,
.update-genre,
.update-status,
.status {
  display: inline-block;
  font-size: 13px;
  line-height: 1.5;
  padding: 1px 8px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.tag-genre,
.tag,
.update-genre {
  background-color: var(--accent-soft);
  color: var(--accent);
}

.tag-status,
.update-status,
.status {
  background-color: var(--status-soft);
  color: var(--status);
}

.status-ongoing,
.status-running {
  background-color: var(--accent-soft);
  color: var(--accent);
}

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

.status-hiatus,
.status-intermittent {
  background-color: var(--status-soft);
  color: var(--status);
}

/* 站内栏目索引（首页卡片式 / 内页列表式） */
.index-columns {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
}

.index-card {
  display: block;
  background-color: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  color: var(--text-main);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.index-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: var(--line-strong);
  color: var(--text-main);
}

.index-card h3 {
  font-size: 16px;
}

.index-card p {
  margin-top: 8px;
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.65;
}

.column-index,
.column-list {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.column-index li,
.column-list li {
  display: block;
}

.column-index a,
.column-list a {
  display: block;
  background-color: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 14px;
  font-size: 14px;
  color: var(--text-main);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.column-index a:hover,
.column-list a:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-card);
  color: var(--accent);
}

.column-index span {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--text-faint);
}

/* 字段说明（首页 dl 版 / 题材页网格版） */
.field-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
}

.field-list dt {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  padding-top: 12px;
}

.field-list dd {
  font-size: 14px;
  color: var(--text-sub);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

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

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

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

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

.field-more {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 14px;
}

/* 折叠列表（阅读说明页） */
.guide-section .field-list {
  display: block;
  border-top: 0;
}

.guide-section .field-item {
  background-color: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0;
  margin-bottom: 10px;
  overflow: hidden;
}

.guide-section .field-item summary {
  cursor: pointer;
  padding: 14px 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  list-style: none;
  position: relative;
  padding-right: 44px;
}

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

.guide-section .field-item summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 18px;
  color: var(--text-faint);
  line-height: 1;
}

.guide-section .field-item[open] summary::after {
  content: "−";
}

.guide-section .field-item p {
  padding: 0 18px 16px;
  font-size: 14px;
  color: var(--text-sub);
}

/* 图片容器统一约束 */
.cover-card img,
.wall-card img,
.rank-cover img,
.update-thumb img,
.genre-cover img,
.guide-figure img,
.rhythm-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background-color: var(--bg-soft);
}

/* --------------------------------------------------------------------------
   4. pages —— 首页
   -------------------------------------------------------------------------- */

/* 首屏卡片流 */
.hero {
  padding: 8px 0 4px;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(320px, 1fr) minmax(420px, 1.25fr);
  gap: 36px;
  align-items: start;
}

.hero-lead {
  padding-top: 8px;
}

.hero-title {
  font-size: 30px;
  font-weight: 600;
  line-height: 1.35;
}

.hero-summary {
  margin-top: 14px;
  font-size: 15px;
  color: var(--text-sub);
  max-width: 560px;
}

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

.hero-genre-links a {
  display: inline-block;
  padding: 8px 14px;
  min-height: 36px;
  font-size: 14px;
  color: var(--text-main);
  background-color: var(--bg-card);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  transition: border-color 0.15s ease, color 0.15s ease, background-color 0.15s ease;
}

.hero-genre-links a:hover {
  color: var(--accent);
  border-color: var(--accent);
  background-color: var(--accent-soft);
}

.hero-note {
  margin-top: 18px;
  font-size: 13px;
  color: var(--text-sub);
}

.hero-wall {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.cover-card {
  background-color: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.cover-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.cover-card img {
  border-radius: 0;
}

.cover-card figcaption {
  padding: 10px 12px;
  font-size: 13px;
  color: var(--text-main);
  line-height: 1.5;
}

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

.cover-card-lg img {
  aspect-ratio: 4 / 3;
}

.cover-card-md img {
  aspect-ratio: 3 / 4;
}

.cover-card-sm img {
  aspect-ratio: 1 / 1;
}

/* 题材分类总览 */
.genre-columns {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

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

.genre-column h3 {
  font-size: 17px;
}

.genre-column h3 a {
  color: var(--text-main);
}

.genre-column h3 a:hover {
  color: var(--accent);
}

.genre-desc {
  margin-top: 8px;
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.65;
}

.genre-items {
  margin-top: 12px;
  border-top: 1px solid var(--line);
}

.genre-items li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.genre-items li:last-child {
  border-bottom: 0;
}

.genre-items a {
  color: var(--text-main);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

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

/* 封面墙与人气榜单 */
.wall-rank {
  display: grid;
  grid-template-columns: minmax(0, 1.9fr) minmax(280px, 1fr);
  gap: 28px;
  align-items: start;
}

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

.wall-card {
  background-color: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.wall-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.wall-card img {
  aspect-ratio: 3 / 4;
  border-radius: 0;
}

.wall-card h3 {
  padding: 10px 12px 0;
  font-size: 14px;
  font-weight: 600;
}

.wall-card h3 a {
  color: var(--text-main);
}

.wall-card h3 a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 8px 12px 12px;
}

.rank-column {
  background-color: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
}

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

.rank-item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.rank-no {
  flex: 0 0 auto;
  width: 24px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
}

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

.rank-body a {
  font-size: 14px;
  color: var(--text-main);
}

.rank-body a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.rank-meta {
  font-size: 13px;
  color: var(--text-faint);
}

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

/* 最近更新记录 */
.update-section .update-list {
  background-color: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.update-section .update-row {
  display: grid;
  grid-template-columns: 108px minmax(0, 1fr) 120px 96px;
  align-items: center;
  gap: 16px;
  padding: 12px 18px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

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

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

.update-title {
  color: var(--text-main);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

a.update-title:hover {
  color: var(--accent);
  text-decoration: underline;
}

.update-section .update-genre {
  justify-self: start;
}

.update-section .tag-status {
  justify-self: start;
}

/* 阅读说明与内容反馈入口 */
.guide-section {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  align-items: start;
}

.guide-column,
.feedback-column {
  background-color: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
}

.guide-column h2,
.feedback-column h2 {
  font-size: 22px;
}

.guide-column > p,
.feedback-column > p {
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-sub);
}

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

.feedback-list {
  margin-top: 14px;
  border-top: 1px solid var(--line);
}

.feedback-list li {
  padding: 10px 0 10px 16px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  color: var(--text-sub);
  position: relative;
}

.feedback-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 18px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: var(--accent);
}

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

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

/* 站内栏目索引 */
.site-index .index-columns {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

/* --------------------------------------------------------------------------
   5. pages —— 题材分类
   -------------------------------------------------------------------------- */
.genre-groups {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

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

.genre-group-head {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.genre-cover {
  width: 132px;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-color: var(--bg-soft);
}

.genre-group-intro {
  min-width: 0;
}

.genre-name {
  font-size: 17px;
  font-weight: 600;
}

.genre-group-intro .genre-desc {
  margin-top: 8px;
  font-size: 14px;
}

.work-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 16px;
}

.work-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  background-color: var(--bg-page);
}

.work-title {
  font-size: 15px;
  font-weight: 600;
}

.work-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
  font-size: 13px;
  color: var(--text-sub);
}

.work-note {
  margin-top: 8px;
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.65;
}

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

/* --------------------------------------------------------------------------
   6. pages —— 最近更新
   -------------------------------------------------------------------------- */
.updates-list-section .update-list {
  background-color: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.updates-list-section .update-row {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
}

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

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

.update-body {
  display: grid;
  grid-template-columns: 116px minmax(0, 1fr);
  gap: 4px 16px;
  align-items: baseline;
  min-width: 0;
}

.updates-list-section .update-date {
  grid-column: 1;
  grid-row: 1;
}

.updates-list-section .update-title {
  grid-column: 2;
  grid-row: 1;
  font-size: 15px;
  font-weight: 600;
}

.updates-list-section .update-title a {
  color: var(--text-main);
}

.updates-list-section .update-title a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.updates-list-section .update-genre {
  grid-column: 2;
  grid-row: 2;
  justify-self: start;
}

.updates-list-section .update-status {
  grid-column: 2;
  grid-row: 2;
  justify-self: start;
  margin-left: 84px;
}

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

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

.status-item dt {
  font-size: 15px;
  font-weight: 600;
}

.status-item dd {
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-sub);
}

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

.rhythm-figure img {
  width: 100%;
  aspect-ratio: 16 / 7;
  border-radius: 0;
}

.rhythm-figure figcaption {
  padding: 12px 18px;
  font-size: 13px;
  color: var(--text-sub);
  border-top: 1px solid var(--line);
}

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

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

.rhythm-note h3 {
  font-size: 16px;
}

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

/* --------------------------------------------------------------------------
   7. pages —— 人气榜单
   -------------------------------------------------------------------------- */
.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.9fr) minmax(300px, 1fr);
  gap: 28px;
  align-items: start;
}

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

.layout-aside {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.rank-list-section,
.rank-rule-section,
.editor-pick-section {
  background-color: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
}

.rank-list-section .rank-list {
  margin-top: 4px;
}

.rank-item-top {
  align-items: flex-start;
}

.rank-cover {
  flex: 0 0 auto;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-color: var(--bg-soft);
}

.rank-cover-lg {
  width: 96px;
  aspect-ratio: 3 / 4;
}

.rank-cover-sm {
  width: 56px;
  aspect-ratio: 3 / 4;
}

.rank-list-section .rank-item {
  align-items: flex-start;
}

.rank-list-section .rank-no {
  width: 28px;
  font-size: 15px;
  padding-top: 2px;
}

.rank-list-section .rank-body {
  display: block;
  min-width: 0;
}

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

.rank-body .rank-name:hover {
  color: var(--accent);
  text-decoration: underline;
}

.rank-body .rank-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.rank-body .rank-reason {
  margin-top: 8px;
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.65;
}

.rule-list {
  border-top: 1px solid var(--line);
  margin-top: 12px;
}

.rule-list dt {
  font-size: 14px;
  font-weight: 600;
  padding-top: 12px;
}

.rule-list dd {
  font-size: 14px;
  color: var(--text-sub);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.rule-note {
  margin-top: 14px;
  font-size: 13px;
  color: var(--text-sub);
}

.pick-list {
  margin-top: 12px;
  border-top: 1px solid var(--line);
}

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

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

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

.pick-meta {
  margin-top: 6px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 13px;
  color: var(--text-sub);
}

.pick-reason {
  margin-top: 6px;
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.65;
}

/* --------------------------------------------------------------------------
   8. pages —— 阅读说明
   -------------------------------------------------------------------------- */
.guide-figure {
  background-color: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 18px;
}

.guide-figure img {
  width: 100%;
  aspect-ratio: 16 / 7;
  border-radius: 0;
}

.guide-figure figcaption {
  padding: 12px 18px;
  font-size: 13px;
  color: var(--text-sub);
  border-top: 1px solid var(--line);
}

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

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

.browse-item h3 {
  font-size: 16px;
}

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

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

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

.feedback-col h3 {
  font-size: 16px;
}

.feedback-type-list,
.feedback-info-list {
  margin-top: 12px;
  border-top: 1px solid var(--line);
}

.feedback-type-list li,
.feedback-info-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
}

.feedback-type-list li:last-child,
.feedback-info-list li:last-child {
  border-bottom: 0;
}

.feedback-type-list strong,
.feedback-info-list strong {
  color: var(--text-main);
  font-weight: 600;
}

.feedback-note {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 14px;
}

.section-index .index-list {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.index-list li {
  display: block;
}

.index-list a {
  display: block;
  background-color: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 14px;
  font-size: 14px;
  color: var(--text-main);
}

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

.index-list span {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--text-faint);
}

/* --------------------------------------------------------------------------
   9. pages —— 404
   -------------------------------------------------------------------------- */
.error-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 48px 24px 64px;
}

.error-hero {
  background-color: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 40px 32px;
  max-width: 720px;
}

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

.error-hero h1 {
  margin-top: 10px;
  font-size: 30px;
  font-weight: 600;
}

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

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 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-color: var(--accent);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: #235751;
  color: #ffffff;
}

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

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

.error-links {
  margin-top: 32px;
}

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

.error-links a {
  display: block;
  background-color: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 14px;
  font-size: 14px;
  color: var(--text-main);
}

.error-links a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* --------------------------------------------------------------------------
   10. responsive —— 平板与手机
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

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

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

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

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

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

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

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

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

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

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    flex: 0 0 100%;
    order: 3;
    display: block;
  }

  .header-inner {
    flex-wrap: wrap;
    gap: 0;
    padding: 8px 16px;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
    padding: 4px 0 12px;
    border-top: 1px solid var(--line);
  }

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

  .nav-list a {
    padding: 13px 4px;
    min-height: 44px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--line);
  }

  .nav-list a.is-current {
    border-bottom-color: var(--line);
    color: var(--accent);
  }

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

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

  .home-main,
  .inner-main,
  .error-main {
    padding-left: 16px;
    padding-right: 16px;
  }

  .footer-inner,
  .footer-bottom {
    padding-left: 16px;
    padding-right: 16px;
  }

  .page-header {
    flex-direction: column;
    gap: 12px;
  }

  .genre-group-head {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 14px;
  }

  .genre-cover {
    width: 96px;
  }

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

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

  .updates-list-section .update-date,
  .updates-list-section .update-title,
  .updates-list-section .update-genre,
  .updates-list-section .update-status {
    grid-column: 1;
    grid-row: auto;
    margin-left: 0;
  }

  .status-legend,
  .rhythm-notes,
  .browse-list,
  .feedback-columns,
  .field-grid,
  .guide-section {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .error-hero {
    padding: 28px 20px;
  }
}

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

  .hero-title,
  .page-title,
  .error-hero h1 {
    font-size: 23px;
  }

  .section-head h2,
  .section-title,
  .guide-section > h2,
  .updates-list-section > h2,
  .status-legend-section > h2,
  .rhythm-section > h2,
  .column-index-section > h2,
  .guide-column h2,
  .feedback-column h2,
  .error-links > h2 {
    font-size: 19px;
  }

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

  .cover-card-lg {
    grid-column: span 2;
    grid-row: span 1;
  }

  .cover-card-lg img {
    aspect-ratio: 16 / 10;
  }

  .cover-card-md img,
  .cover-card-sm img {
    aspect-ratio: 3 / 4;
  }

  .genre-columns,
  .wall-grid,
  .work-list,
  .index-columns,
  .site-index .index-columns,
  .column-index,
  .column-list,
  .section-index .index-list {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .update-section .update-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
    padding: 12px 16px;
  }

  .update-section .update-date,
  .update-section .update-genre,
  .update-section .tag-status {
    justify-self: start;
  }

  .update-section .update-title {
    white-space: normal;
  }

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

  .rank-list-section,
  .rank-rule-section,
  .editor-pick-section,
  .rank-column,
  .guide-column,
  .feedback-column,
  .genre-group,
  .genre-column {
    padding: 16px;
  }

  .rank-cover-lg {
    width: 76px;
  }

  .rank-cover-sm {
    width: 48px;
  }

  .guide-figure img,
  .rhythm-figure img {
    aspect-ratio: 4 / 3;
  }
}

/* 动效增强：仅在支持且用户未要求减少动效时启用 */
@media (prefers-reduced-motion: no-preference) {
  .cover-card,
  .wall-card,
  .index-card {
    will-change: transform;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}