/* =========================================================
   51吃瓜app · 漫画阅读与连载更新内容站
   全站样式表
   ========================================================= */

/* ---------------------------------------------------------
   1. base · 变量与基础重置
   --------------------------------------------------------- */
:root {
  --ink-900: #0f1012;
  --ink-800: #17181b;
  --ink-700: #1e1f23;
  --ink-600: #2a2b2f;
  --ink-500: #3a3b40;
  --text-main: #e9e9ea;
  --text-soft: #a4a4aa;
  --text-dim: #7d7d84;
  --btn-fill: #f4f4f5;
  --btn-ink: #17181b;
  --line: #2a2b2f;
  --line-soft: #232427;
  --radius-card: 6px;
  --radius-btn: 4px;
  --max-wide: 1180px;
  --max-inner: 980px;
  --sidebar-w: 236px;
  --gap-layout: 32px;
  --font-serif: "Songti SC", "Noto Serif SC", "Source Han Serif SC", "SimSun", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: "SFMono-Regular", "Roboto Mono", Consolas, "Courier New", monospace;
}

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

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

body {
  margin: 0;
  background-color: var(--ink-900);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: normal;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.35;
  color: var(--text-main);
}

p {
  margin: 0 0 14px;
}

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

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

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

a:hover {
  color: #ffffff;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
  border: 0;
  background-color: var(--ink-700);
}

figure {
  margin: 0;
}

figcaption {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-soft);
}

strong {
  color: #ffffff;
  font-weight: 600;
}

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

caption {
  caption-side: top;
  padding: 0 0 10px;
  text-align: left;
  font-size: 13px;
  color: var(--text-soft);
}

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

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

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

/* ---------------------------------------------------------
   2. layout · 页头 / 主容器 / 侧栏 / 页脚
   --------------------------------------------------------- */

/* --- 页头 --- */
.site-header {
  border-bottom: 1px solid var(--line);
  background-color: var(--ink-900);
  position: sticky;
  top: 0;
  z-index: 30;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 18px;
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 14px 24px;
}

.site-brand {
  font-family: var(--font-serif);
  font-size: 21px;
  font-weight: 700;
  color: #ffffff;
  white-space: nowrap;
}

.site-slogan {
  margin: 0;
  padding-left: 18px;
  border-left: 1px solid var(--line);
  font-size: 13px;
  color: var(--text-soft);
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  margin-left: auto;
  padding: 10px 14px;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius-btn);
  font-size: 14px;
  color: var(--text-main);
}

.nav-toggle:hover {
  background-color: var(--ink-700);
}

/* --- 主导航 --- */
.site-nav {
  background-color: var(--ink-800);
  border-bottom: 1px solid var(--line);
}

.site-nav .nav-list-main {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 0 24px;
}

.site-nav .nav-list-main > li {
  display: flex;
}

.site-nav .nav-list-main a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  font-size: 14px;
  color: var(--text-soft);
  border-bottom: 2px solid transparent;
}

.site-nav .nav-list-main a:hover {
  color: #ffffff;
  background-color: var(--ink-700);
}

.site-nav .nav-list-main a.is-current {
  color: #ffffff;
  border-bottom-color: var(--btn-fill);
}

/* --- 主体栅格容器 --- */
.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--sidebar-w);
  gap: var(--gap-layout);
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 32px 24px 56px;
  align-items: start;
}

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

.page-layout > .site-main {
  min-width: 0;
}

.page-layout > .site-sidebar,
.page-layout > .group-nav,
.page-layout > .side-nav {
  min-width: 0;
}

/* --- 站点主内容 --- */
.site-main {
  min-width: 0;
}

.inner-main {
  max-width: var(--max-inner);
}

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

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

.breadcrumb a:hover {
  color: #ffffff;
}

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

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

/* --- 内页页标题区 --- */
.page-header {
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-title {
  font-size: clamp(24px, 4.6vw, 34px);
  font-weight: 700;
  color: #ffffff;
}

.page-head,
.page-hero {
  padding: 20px 0 4px;
}

.page-lead {
  max-width: 62ch;
  font-size: 15px;
  color: var(--text-soft);
}

/* --- 页脚 --- */
.site-footer {
  margin-top: 24px;
  border-top: 1px solid var(--line);
  background-color: var(--ink-800);
}

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

.footer-title {
  margin-bottom: 12px;
  font-size: 14px;
  font-weight: 700;
  color: #ffffff;
}

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

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

.footer-col a:hover {
  color: #ffffff;
}

.footer-note {
  font-size: 13px;
  color: var(--text-soft);
}

.footer-bottom {
  max-width: var(--max-wide);
  margin: 0 auto;
  padding: 16px 24px 26px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  color: var(--text-dim);
}

/* --- 分组侧栏（首页 .site-sidebar / 内页多种命名共用） --- */
.site-sidebar,
.group-nav,
.side-nav {
  font-size: 14px;
}

.side-nav {
  position: sticky;
  top: 96px;
}

.nav-group,
.group-nav-block,
.side-group,
.group-group {
  border-bottom: 1px solid var(--line-soft);
}

.nav-group:last-child,
.group-nav-block:last-child,
.side-group:last-child,
.group-group:last-child {
  border-bottom: 0;
}

.nav-group-title,
.group-nav-title,
.group-nav-heading,
.nav-group-toggle,
.group-nav-head,
.group-nav-toggle,
.side-group-toggle,
.group-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  width: 100%;
  margin: 0;
  padding: 12px 4px;
  min-height: 44px;
  text-align: left;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-soft);
  letter-spacing: 0.04em;
  border-bottom: 0;
}

.nav-group-title {
  cursor: default;
}

.nav-group-toggle::after,
.group-nav-head::after,
.group-nav-toggle::after,
.side-group-toggle::after,
.group-toggle::after {
  content: "▾";
  font-size: 11px;
  color: var(--text-dim);
  transition: transform 0.18s ease;
}

.nav-group-toggle[aria-expanded="false"]::after,
.group-nav-head[aria-expanded="false"]::after,
.group-nav-toggle[aria-expanded="false"]::after,
.side-group-toggle[aria-expanded="false"]::after,
.group-toggle[aria-expanded="false"]::after {
  transform: rotate(-90deg);
}

.nav-list,
.group-nav-list,
.side-list,
.group-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 0 0 12px;
}

.nav-list a,
.group-nav-list a,
.side-list a,
.group-list a {
  display: flex;
  align-items: center;
  min-height: 40px;
  padding: 6px 10px;
  border-left: 2px solid transparent;
  border-radius: 0 var(--radius-btn) var(--radius-btn) 0;
  color: var(--text-soft);
}

.nav-list a:hover,
.group-nav-list a:hover,
.side-list a:hover,
.group-list a:hover {
  color: #ffffff;
  background-color: var(--ink-700);
}

.nav-list a.is-current,
.nav-list a.is-active,
.group-nav-list a.is-current,
.group-nav-list a.is-active,
.side-list a.is-current,
.side-list a.is-active,
.group-list a.is-current,
.group-list a.is-active {
  color: #ffffff;
  border-left-color: var(--btn-fill);
  background-color: var(--ink-700);
}

/* 折叠状态：默认展开，仅 [aria-expanded="false"] 收起 */
.nav-group-toggle[aria-expanded="false"] + .nav-group-list,
.group-nav-head[aria-expanded="false"] + .group-nav-list,
.group-nav-toggle[aria-expanded="false"] + .group-nav-list,
.side-group-toggle[aria-expanded="false"] + .side-list,
.group-toggle[aria-expanded="false"] + .group-list {
  display: none;
}

/* ---------------------------------------------------------
   3. components · 通用组件
   --------------------------------------------------------- */

/* --- 按钮 --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 22px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.btn-primary {
  background-color: var(--btn-fill);
  color: var(--btn-ink);
}

.btn-primary:hover {
  background-color: #ffffff;
  color: var(--btn-ink);
}

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

.btn-secondary:hover {
  background-color: var(--ink-700);
  color: #ffffff;
}

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

.btn-ghost:hover {
  color: #ffffff;
  background-color: var(--ink-700);
}

/* --- 通用 section --- */
.section,
.section-block,
.content-section {
  padding: 40px 0 4px;
  border-top: 1px solid var(--line-soft);
}

.section:first-of-type,
.section-block:first-of-type,
.content-section:first-of-type {
  border-top: 0;
  padding-top: 8px;
}

.section-title {
  position: relative;
  padding-left: 12px;
  font-size: clamp(18px, 2.6vw, 21px);
  font-weight: 700;
  color: #ffffff;
}

.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.28em;
  bottom: 0.28em;
  width: 3px;
  background-color: var(--text-soft);
}

.section-desc,
.section-note,
.section-intro,
.section-lead {
  margin-top: 10px;
  max-width: 66ch;
  font-size: 14px;
  color: var(--text-soft);
}

.section-more {
  margin-top: 16px;
  font-size: 14px;
}

.section-more a {
  color: var(--text-soft);
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
}

.section-more a:hover {
  color: #ffffff;
  border-bottom-color: var(--text-soft);
}

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

.block-note a {
  color: var(--text-main);
  border-bottom: 1px solid var(--line);
}

.block-note a:hover {
  color: #ffffff;
}

/* --- 表格 --- */
.table-scroll,
.table-wrap {
  margin-top: 18px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background-color: var(--ink-800);
}

.data-table {
  width: 100%;
  min-width: 520px;
  font-size: 14px;
}

.data-table thead th {
  position: sticky;
  top: 0;
  padding: 12px 16px;
  text-align: left;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-soft);
  background-color: var(--ink-700);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

.data-table tbody td {
  padding: 12px 16px;
  color: var(--text-main);
  border-bottom: 1px solid var(--line-soft);
  vertical-align: top;
}

.data-table tbody tr:last-child td {
  border-bottom: 0;
}

.data-table tbody tr:hover td {
  background-color: var(--ink-700);
}

.data-table tbody td:first-child {
  color: #ffffff;
  font-weight: 600;
}

.data-table caption {
  padding: 12px 16px 0;
}

.table-note {
  margin-top: 12px;
  font-size: 13px;
  color: var(--text-dim);
}

/* 数字与状态等宽 */
.schedule-table td:first-child,
.list-table td:first-child,
.data-table .status,
.data-table .range {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.status {
  display: inline-block;
  padding: 1px 8px;
  border: 1px solid var(--line);
  border-radius: 3px;
  font-size: 12px;
  color: var(--text-soft);
  white-space: nowrap;
}

.status-ongoing {
  color: #ffffff;
  border-color: var(--text-soft);
}

.status-finished {
  color: var(--text-soft);
}

.status-paused {
  color: var(--text-dim);
  border-style: dashed;
}

/* 题材标签 */
.tag {
  display: inline-block;
  padding: 1px 8px;
  margin-right: 6px;
  border: 1px solid var(--line);
  border-radius: 3px;
  font-size: 12px;
  color: var(--text-soft);
  white-space: nowrap;
}

/* --- figure / 图片容器 --- */
.hero-media,
.wall-media,
.schedule-figure,
.media-figure,
.section-figure {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background-color: var(--ink-800);
}

.hero-media img,
.wall-media img,
.schedule-figure img,
.media-figure img,
.section-figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.hero-media figcaption,
.wall-media figcaption,
.schedule-figure figcaption,
.media-figure figcaption,
.section-figure figcaption {
  padding: 10px 14px 12px;
  margin: 0;
}

/* --- 封面卡 --- */
.cover-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background-color: var(--ink-800);
  overflow: hidden;
  transition: border-color 0.18s ease, filter 0.18s ease;
}

.cover-card:hover {
  border-color: var(--text-soft);
  filter: brightness(1.12);
}

.cover-card > a {
  display: block;
  padding: 14px;
}

.card-title {
  font-size: 16px;
  font-weight: 700;
  color: #ffffff;
}

.card-meta {
  margin: 8px 0 6px;
  font-size: 12px;
  color: var(--text-soft);
}

.card-info {
  margin: 0;
  font-size: 13px;
  color: var(--text-dim);
}

/* --- 说明列表（更新节奏 / 休整 / 门槛） --- */
.info-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.info-item {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background-color: var(--ink-800);
}

.info-name {
  font-size: 16px;
  color: #ffffff;
}

.info-text {
  margin: 8px 0 0;
  font-size: 14px;
  color: var(--text-soft);
}

/* --- 条文与规则列表 --- */
.rule-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 18px;
}

.rule-list li {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background-color: var(--ink-800);
  font-size: 14px;
  color: var(--text-soft);
}

.rule-list li strong {
  display: block;
  margin-bottom: 4px;
  color: #ffffff;
}

.rule-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
}

.rule-no {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--text-dim);
}

.rule-name {
  font-size: 16px;
  color: #ffffff;
}

.rule-body p {
  margin: 6px 0 0;
  font-size: 14px;
  color: var(--text-soft);
}

.rule-scope {
  padding-left: 10px;
  border-left: 2px solid var(--line);
  font-size: 13px;
  color: var(--text-dim);
}

/* --- 折叠条目 --- */
.faq-list,
.fold-item {
  margin-top: 0;
}

.faq-item,
.fold-item {
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background-color: var(--ink-800);
}

.faq-list,
.faq-item + .faq-item,
.fold-item + .fold-item {
  margin-top: 10px;
}

.faq-item summary,
.fold-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  min-height: 44px;
  font-size: 15px;
  font-weight: 600;
  color: #ffffff;
  cursor: pointer;
  list-style: none;
}

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

.faq-item summary::after,
.fold-item summary::after {
  content: "＋";
  font-size: 14px;
  color: var(--text-soft);
}

.faq-item[open] summary::after,
.fold-item[open] summary::after {
  content: "－";
}

.faq-item p,
.fold-item p {
  padding: 0 16px 16px;
  font-size: 14px;
  color: var(--text-soft);
}

/* --- 相邻页面入口条 --- */
.page-next,
.next-strip,
.adjacent-nav,
.page-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--line-soft);
}

.next-link,
.adjacent-link,
.page-link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background-color: var(--ink-800);
  font-size: 14px;
  color: var(--text-main);
}

.next-link:hover,
.adjacent-link:hover,
.page-link:hover {
  border-color: var(--text-soft);
  color: #ffffff;
}

.next-label {
  font-weight: 600;
  color: #ffffff;
}

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

/* --- 相关内容条 --- */
.related-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 24px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background-color: var(--ink-800);
}

.related-links-label {
  font-size: 13px;
  color: var(--text-soft);
}

.related-links-item {
  font-size: 14px;
  color: var(--text-main);
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
}

.related-links-item:hover {
  color: #ffffff;
  border-bottom-color: var(--text-soft);
}

/* ---------------------------------------------------------
   4. pages · 首页
   --------------------------------------------------------- */
.site-home .home-main {
  min-width: 0;
}

/* --- 首屏 --- */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 28px;
  align-items: center;
  padding: 8px 0 40px;
}

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

.hero-text h1 {
  font-size: clamp(28px, 6vw, 46px);
  font-weight: 700;
  color: #ffffff;
}

.hero-lead {
  margin: 16px 0 0;
  max-width: 46ch;
  font-size: 16px;
  color: var(--text-soft);
}

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

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

.hero-media img {
  aspect-ratio: 16 / 10;
}

/* --- 更新日程概览 --- */
.schedule-overview .schedule-table {
  min-width: 560px;
}

/* --- 题材分类入口封面墙 --- */
.genre-wall .wall-media {
  margin-top: 18px;
}

.genre-wall .wall-media img {
  aspect-ratio: 21 / 9;
}

.card-wall {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin-top: 18px;
}

/* --- 分层书单表 --- */
.reading-lists .list-table {
  min-width: 560px;
}

/* --- 阅读路径 --- */
.step-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 18px;
  counter-reset: step;
}

.step-item {
  position: relative;
  padding: 16px 16px 16px 52px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background-color: var(--ink-800);
  counter-increment: step;
}

.step-item::before {
  content: counter(step);
  position: absolute;
  left: 16px;
  top: 16px;
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--text-dim);
}

.step-name {
  font-size: 16px;
  color: #ffffff;
}

.step-item p {
  margin: 8px 0 0;
  font-size: 14px;
  color: var(--text-soft);
}

/* --- 规则与反馈提示条 --- */
.notice-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 40px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background-color: var(--ink-800);
}

.notice-title {
  font-size: 16px;
  color: #ffffff;
}

.notice-text {
  flex: 1 1 320px;
  margin: 0;
  font-size: 14px;
  color: var(--text-soft);
}

.notice-link {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-btn);
  font-size: 14px;
  color: var(--text-main);
}

.notice-link:hover {
  background-color: var(--ink-700);
  color: #ffffff;
}

/* ---------------------------------------------------------
   5. pages · 内页模块
   --------------------------------------------------------- */

/* --- 漫画目录 --- */
.catalog-groups {
  padding-top: 8px;
}

.catalog-group {
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
}

.catalog-group:first-of-type {
  border-top: 0;
  padding-top: 4px;
}

.group-name {
  font-size: 18px;
  color: #ffffff;
}

.group-desc {
  margin: 8px 0 0;
  max-width: 66ch;
  font-size: 14px;
  color: var(--text-soft);
}

.entry-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-top: 16px;
}

.entry-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background-color: var(--ink-800);
  overflow: hidden;
}

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

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

.entry-title {
  font-size: 15px;
  color: #ffffff;
}

.entry-meta {
  margin: 6px 0 0;
  font-size: 12px;
  color: var(--text-soft);
}

.entry-link {
  display: inline-block;
  margin-top: 8px;
  font-size: 13px;
  color: var(--text-main);
  border-bottom: 1px solid var(--line);
}

.entry-link:hover {
  color: #ffffff;
  border-bottom-color: var(--text-soft);
}

.field-legend .data-table {
  min-width: 520px;
}

.map-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 18px;
}

.map-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background-color: var(--ink-800);
}

.map-text {
  flex: 1 1 300px;
  margin: 0;
  font-size: 14px;
  color: var(--text-soft);
}

.map-link {
  font-size: 14px;
  color: var(--text-main);
  border-bottom: 1px solid var(--line);
}

.map-link:hover {
  color: #ffffff;
  border-bottom-color: var(--text-soft);
}

/* --- 更新日程 --- */
.schedule-section .schedule-figure {
  margin-top: 18px;
}

.schedule-section .schedule-figure img {
  aspect-ratio: 21 / 9;
}

.schedule-section .schedule-table {
  min-width: 560px;
}

.schedule-table td:last-child {
  line-height: 1.7;
}

/* --- 题材专题 --- */
.article-block {
  padding-top: 40px;
}

.article-block:first-of-type {
  padding-top: 8px;
}

.article-block h2 {
  position: relative;
  padding-left: 12px;
  font-size: clamp(18px, 2.6vw, 21px);
  color: #ffffff;
}

.article-block h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.28em;
  bottom: 0.28em;
  width: 3px;
  background-color: var(--text-soft);
}

.article-block > p {
  margin-top: 14px;
  max-width: 68ch;
  font-size: 15px;
  color: var(--text-soft);
}

.criteria-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.criteria-list li {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--text-soft);
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
  background-color: var(--ink-800);
  font-size: 14px;
  color: var(--text-soft);
}

.criteria-name {
  color: #ffffff;
  font-weight: 600;
}

.media-pair {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  margin-top: 18px;
}

.media-pair .media-figure {
  min-width: 0;
}

.media-pair .media-figure img {
  aspect-ratio: 4 / 3;
}

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

.media-text p {
  font-size: 15px;
  color: var(--text-soft);
}

.media-figure-wide {
  margin-top: 24px;
}

.media-figure-wide img {
  aspect-ratio: 21 / 9;
}

.order-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 18px;
}

.order-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background-color: var(--ink-800);
}

.order-index {
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--text-dim);
}

.order-body h3 {
  font-size: 16px;
  color: #ffffff;
}

.order-body p {
  margin: 6px 0 0;
  font-size: 14px;
  color: var(--text-soft);
}

/* --- 推荐书单 --- */
.section-block h2 {
  position: relative;
  padding-left: 12px;
  font-size: clamp(18px, 2.6vw, 21px);
  color: #ffffff;
}

.section-block h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.28em;
  bottom: 0.28em;
  width: 3px;
  background-color: var(--text-soft);
}

.section-block > p {
  margin-top: 14px;
  max-width: 68ch;
  font-size: 15px;
  color: var(--text-soft);
}

.section-block .media-figure {
  margin-top: 18px;
}

.section-block .media-figure img {
  aspect-ratio: 21 / 9;
}

.booklist-tier {
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
}

.booklist-tier:first-of-type {
  border-top: 0;
  padding-top: 4px;
}

.booklist-tier h3 {
  font-size: 17px;
  color: #ffffff;
}

.booklist-tier .data-table {
  min-width: 520px;
  margin-top: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.tier-condition {
  margin-top: 14px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--text-soft);
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
  background-color: var(--ink-800);
}

.tier-condition h4 {
  font-size: 15px;
  color: #ffffff;
}

.tier-condition p {
  margin: 8px 0 0;
  font-size: 14px;
  color: var(--text-soft);
}

/* --- 阅读指引 --- */
.content-section h2 {
  position: relative;
  padding-left: 12px;
  font-size: clamp(18px, 2.6vw, 21px);
  color: #ffffff;
}

.content-section h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.28em;
  bottom: 0.28em;
  width: 3px;
  background-color: var(--text-soft);
}

.content-section > p {
  margin-top: 14px;
  max-width: 68ch;
  font-size: 15px;
  color: var(--text-soft);
}

.content-section .media-figure {
  margin-top: 18px;
}

.content-section .media-figure img {
  aspect-ratio: 21 / 9;
}

.two-col {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
  margin-top: 20px;
}

.col-block {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background-color: var(--ink-800);
}

.col-block h3 {
  font-size: 16px;
  color: #ffffff;
}

.col-block p {
  margin: 10px 0 12px;
  font-size: 14px;
  color: var(--text-soft);
}

.plain-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.plain-list li {
  position: relative;
  padding-left: 14px;
  font-size: 14px;
  color: var(--text-soft);
}

.plain-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 5px;
  height: 1px;
  background-color: var(--text-dim);
}

/* --- 规则与反馈 --- */
.grade-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.grade-item {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background-color: var(--ink-800);
}

.grade-name {
  font-size: 16px;
  color: #ffffff;
}

.grade-desc {
  margin: 10px 0 0;
  font-size: 14px;
  color: var(--text-soft);
}

.grade-handle {
  margin: 10px 0 0;
  padding-top: 10px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  color: var(--text-dim);
}

.feedback-flow {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 20px;
  counter-reset: flow;
}

.flow-step {
  position: relative;
  padding: 16px 16px 16px 52px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background-color: var(--ink-800);
  counter-increment: flow;
}

.flow-step::before {
  content: counter(flow);
  position: absolute;
  left: 16px;
  top: 16px;
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--text-dim);
}

.flow-name {
  font-size: 16px;
  color: #ffffff;
}

.flow-step p {
  margin: 8px 0 0;
  font-size: 14px;
  color: var(--text-soft);
}

.flow-step a {
  color: var(--text-main);
  border-bottom: 1px solid var(--line);
}

.flow-step a:hover {
  color: #ffffff;
  border-bottom-color: var(--text-soft);
}

.flow-note {
  font-size: 13px;
  color: var(--text-dim);
}

/* ---------------------------------------------------------
   6. pages · 404
   --------------------------------------------------------- */
.site-error .error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: 64px 24px;
}

.error-inner {
  max-width: 620px;
  width: 100%;
  text-align: center;
}

.error-code {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.24em;
  color: var(--text-dim);
}

.error-title {
  margin-top: 12px;
  font-size: clamp(24px, 5vw, 34px);
  color: #ffffff;
}

.error-text {
  margin: 16px auto 0;
  max-width: 46ch;
  font-size: 15px;
  color: var(--text-soft);
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 26px;
}

.error-note {
  margin-top: 26px;
  font-size: 14px;
  color: var(--text-soft);
}

.error-note a {
  color: var(--text-main);
  border-bottom: 1px solid var(--line);
}

.error-note a:hover {
  color: #ffffff;
  border-bottom-color: var(--text-soft);
}

/* ---------------------------------------------------------
   7. responsive · 响应式断点
   --------------------------------------------------------- */

/* 中等屏幕：侧栏收窄 */
@media (max-width: 1024px) {
  :root {
    --sidebar-w: 210px;
    --gap-layout: 24px;
  }

  .hero {
    gap: 22px;
  }
}

/* 移动端断点 760px */
@media (max-width: 760px) {
  .header-inner {
    flex-wrap: wrap;
    gap: 10px;
    padding: 12px 16px;
  }

  .site-brand {
    font-size: 19px;
  }

  .site-slogan {
    padding-left: 12px;
    font-size: 12px;
    white-space: normal;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .site-nav {
    padding: 0 16px 12px;
  }

  .site-nav .nav-list-main {
    display: none;
    flex-direction: column;
    gap: 2px;
    padding: 0;
  }

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

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

  .site-nav .nav-list-main a {
    width: 100%;
    padding: 10px 12px;
    border-bottom: 1px solid var(--line-soft);
    border-left: 2px solid transparent;
  }

  .site-nav .nav-list-main a.is-current {
    border-bottom-color: var(--line-soft);
    border-left-color: var(--btn-fill);
  }

  /* 移动端：主内容在侧栏之前 */
  .page-layout,
  .page-layout.sidebar-left,
  .sidebar-left .page-layout {
    display: flex;
    flex-direction: column;
    gap: 24px;
    padding: 20px 16px 40px;
  }

  .page-layout > .site-main {
    order: 1;
    width: 100%;
  }

  .page-layout > .site-sidebar,
  .page-layout > .group-nav,
  .page-layout > .side-nav {
    order: 2;
    width: 100%;
    position: static;
    top: auto;
  }

  .site-sidebar,
  .group-nav,
  .side-nav {
    padding: 4px 0;
    border-top: 1px solid var(--line-soft);
  }

  .side-nav {
    position: static;
  }

  .inner-main {
    max-width: none;
  }

  /* 首屏改为纵向，标题与入口在上 */
  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
    padding: 4px 0 28px;
  }

  .hero-text {
    order: 1;
  }

  .hero-media {
    order: 2;
  }

  .hero-media img {
    aspect-ratio: 16 / 9;
  }

  .hero-actions .btn {
    flex: 1 1 auto;
  }

  /* 表格转纵向卡片 */
  .table-scroll,
  .table-wrap {
    overflow-x: visible;
    border: 0;
    background-color: transparent;
  }

  .data-table {
    min-width: 0;
    display: block;
  }

  .data-table caption {
    display: block;
    padding: 0 0 10px;
  }

  .data-table thead {
    display: none;
  }

  .data-table tbody,
  .data-table tr,
  .data-table td {
    display: block;
    width: 100%;
  }

  .data-table tbody tr {
    margin-bottom: 12px;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    background-color: var(--ink-800);
  }

  .data-table tbody tr:last-child {
    margin-bottom: 0;
  }

  .data-table tbody td {
    padding: 6px 0;
    border-bottom: 1px dashed var(--line-soft);
  }

  .data-table tbody td:last-child {
    border-bottom: 0;
  }

  .data-table tbody tr:hover td {
    background-color: transparent;
  }

  .data-table tbody td:first-child {
    font-size: 15px;
  }

  /* 卡片墙两列 */
  .card-wall {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .cover-card > a {
    padding: 12px;
  }

  .card-title {
    font-size: 15px;
  }

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

  .info-list,
  .step-list,
  .criteria-list,
  .grade-list,
  .feedback-flow {
    grid-template-columns: minmax(0, 1fr);
  }

  .media-pair {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }

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

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

  .notice-bar {
    flex-direction: column;
    align-items: flex-start;
  }

  .notice-text {
    flex: 1 1 auto;
  }

  .notice-link {
    width: 100%;
    justify-content: center;
  }

  /* 页脚两列 */
  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
    padding: 28px 16px 22px;
  }

  .footer-bottom {
    padding: 14px 16px 22px;
  }

  .error-main {
    min-height: 52vh;
    padding: 44px 16px;
  }

  .error-actions {
    flex-direction: column;
  }

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

/* 小屏微调 */
@media (max-width: 420px) {
  .site-slogan {
    display: none;
  }

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

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

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

/* 尊重减弱动效偏好 */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}