/* ==========================================================================
   base / 全局基础
   ========================================================================== */
:root {
  --color-paper: #f5f2ea;
  --color-ink: #1c1c1c;
  --color-gray: #6b6b6b;
  --color-accent: #b3402a;
  --color-line: #e8e2d4;
  --color-white: #ffffff;
  --color-card-bg: #fbf9f4;
  --font-serif: 'Noto Serif SC', 'Songti SC', 'SimSun', serif;
  --font-sans: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --container-width: 1200px;
  --header-height: 76px;
  --radius: 6px;
  --radius-lg: 8px;
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 40px;
  --space-xl: 64px;
  --shadow-card: 0 1px 4px rgba(28, 28, 28, 0.06);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a {
  color: var(--color-ink);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

ul,
ol {
  list-style: none;
}

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

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

/* ==========================================================================
   layout / 全站骨架
   ========================================================================== */

.site-header {
  background-color: var(--color-paper);
  border-bottom: 1px solid var(--color-line);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.brand-area {
  flex-shrink: 0;
}

.brand-link {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.brand-slogan {
  font-size: 0.75rem;
  color: var(--color-gray);
  margin-top: 2px;
  letter-spacing: 0.02em;
}

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

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

.nav-list li a {
  display: block;
  padding: 8px 16px;
  font-size: 0.95rem;
  color: var(--color-ink);
  border-radius: var(--radius);
  border: 1px solid transparent;
}

.nav-list li a:hover {
  color: var(--color-accent);
  background-color: rgba(179, 64, 42, 0.05);
}

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

.header-entry {
  flex-shrink: 0;
}

.reader-entry-link {
  display: inline-block;
  padding: 8px 20px;
  font-size: 0.9rem;
  color: var(--color-ink);
  border: 1px solid var(--color-ink);
  border-radius: var(--radius);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.reader-entry-link:hover {
  background-color: var(--color-ink);
  color: var(--color-paper);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  position: relative;
}

.nav-toggle-icon,
.nav-toggle-icon::before,
.nav-toggle-icon::after {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-ink);
  position: absolute;
  transition: transform 0.2s ease;
}

.nav-toggle-icon {
  position: relative;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: '';
  left: 0;
}

.nav-toggle-icon::before {
  top: -7px;
}

.nav-toggle-icon::after {
  top: 7px;
}

.site-main {
  flex: 1;
  width: 100%;
}

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

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 24px 0 4px;
  font-size: 0.85rem;
  color: var(--color-gray);
}

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

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

.breadcrumb-sep {
  color: var(--color-line);
  font-size: 0.8rem;
}

.breadcrumb-current {
  color: var(--color-ink);
  font-weight: 500;
}

/* 页面标题区 */
.page-header {
  padding: 24px 0 32px;
  border-bottom: 2px solid var(--color-ink);
  margin-bottom: 40px;
}

.page-title {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-ink);
}

.page-description {
  margin-top: 12px;
  font-size: 1rem;
  color: var(--color-gray);
  max-width: 720px;
  line-height: 1.8;
}

/* 页脚 */
.site-footer {
  background-color: var(--color-ink);
  color: #c8c4b8;
  margin-top: auto;
}

.footer-shell {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 24px 32px;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin-bottom: 24px;
}

.footer-nav a {
  color: #c8c4b8;
  font-size: 0.9rem;
  padding: 4px 0;
}

.footer-nav a:hover {
  color: var(--color-paper);
}

.footer-site-info {
  font-size: 0.85rem;
  color: #8f8b80;
  line-height: 1.6;
  margin-bottom: 12px;
  max-width: 640px;
}

.copyright {
  font-size: 0.8rem;
  color: #6f6b62;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 16px;
}

/* ==========================================================================
   components / 通用组件
   ========================================================================== */

.section-block {
  padding: 48px 0;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 24px;
  position: relative;
  padding-bottom: 12px;
}

.section-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 48px;
  height: 3px;
  background-color: var(--color-accent);
}

.section-note {
  font-size: 0.95rem;
  color: var(--color-gray);
  margin-bottom: 24px;
  max-width: 720px;
}

.section-intro {
  font-size: 1rem;
  color: var(--color-gray);
  margin-bottom: 32px;
  max-width: 720px;
}

/* 按钮 */
.btn {
  display: inline-block;
  padding: 12px 28px;
  font-size: 0.95rem;
  border-radius: var(--radius);
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn-primary {
  background-color: var(--color-ink);
  color: var(--color-paper);
  border: 1px solid var(--color-ink);
}

.btn-primary:hover {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-paper);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-ink);
  border: 1px solid var(--color-line);
}

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

/* 图文容器 */
.content-media {
  margin-bottom: 24px;
}

.content-media img {
  width: 100%;
  border-radius: var(--radius-lg);
}

.content-media figcaption {
  font-size: 0.85rem;
  color: var(--color-gray);
  padding-top: 8px;
  text-align: center;
}

.content-media-inline {
  max-width: 720px;
  margin: 0 auto 32px;
}

/* 相关链接 */
.related-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--color-line);
}

.related-links-label {
  font-size: 0.9rem;
  color: var(--color-gray);
  font-weight: 600;
}

.related-links-item {
  font-size: 0.9rem;
  color: var(--color-accent);
  padding: 4px 12px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.related-links-item:hover {
  border-color: var(--color-accent);
}

/* FAQ */
.faq-list {
  max-width: 820px;
}

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

.faq-item:first-child {
  border-top: 1px solid var(--color-line);
}

.faq-question {
  padding: 18px 0;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  list-style: none;
}

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

.faq-question::after {
  content: '+';
  font-size: 1.3rem;
  color: var(--color-accent);
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.faq-item[open] .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 0 20px;
  color: var(--color-gray);
  font-size: 0.95rem;
  line-height: 1.8;
}

.faq-answer p {
  margin-bottom: 8px;
}

.faq-answer a {
  color: var(--color-accent);
  text-decoration: underline;
}

/* ==========================================================================
   pages / index 首页
   ========================================================================== */

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

/* 杂志目录首屏 */
.hero-magazine {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  padding: 56px 0 48px;
  border-bottom: 1px solid var(--color-line);
}

.hero-copy {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.issue-label {
  font-size: 0.9rem;
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1.3;
}

.hero-lead {
  font-size: 1.05rem;
  color: var(--color-gray);
  line-height: 1.8;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 8px;
}

.hero-cover {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

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

/* 栏目入口 */
.directory-links {
  padding: 48px 0;
  border-bottom: 1px solid var(--color-line);
}

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

.directory-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.directory-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 4px 12px rgba(28, 28, 28, 0.08);
}

.directory-card .card-img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: var(--radius);
}

.directory-card h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
}

.directory-card p {
  font-size: 0.9rem;
  color: var(--color-gray);
  line-height: 1.6;
}

/* 最近更新时间线 */
.recent-timeline {
  padding: 48px 0;
  border-bottom: 1px solid var(--color-line);
}

.timeline-list {
  position: relative;
  padding-left: 32px;
}

.timeline-list::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: var(--color-line);
}

.timeline-item {
  position: relative;
  padding-bottom: 24px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-node {
  position: absolute;
  left: -32px;
  top: 12px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-color: var(--color-paper);
  border: 3px solid var(--color-accent);
}

.timeline-content {
  display: flex;
  align-items: center;
  gap: 20px;
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 16px;
  transition: border-color 0.2s ease;
}

.timeline-content:hover {
  border-color: var(--color-accent);
}

.timeline-content img {
  width: 72px;
  height: 96px;
  object-fit: cover;
  border-radius: var(--radius);
  flex-shrink: 0;
}

.update-info {
  flex: 1;
}

.update-info h3 {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.update-info p {
  font-size: 0.85rem;
  color: var(--color-gray);
  line-height: 1.5;
}

/* 编辑推荐 */
.editor-picks {
  padding: 48px 0;
  border-bottom: 1px solid var(--color-line);
}

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

.pick-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.pick-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 4px 12px rgba(28, 28, 28, 0.08);
}

.pick-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.pick-tag {
  display: inline-block;
  margin: 16px 16px 0;
  font-size: 0.8rem;
  color: var(--color-accent);
  background-color: rgba(179, 64, 42, 0.08);
  padding: 2px 10px;
  border-radius: 12px;
}

.pick-card h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  padding: 8px 16px 0;
}

.pick-card p:last-child {
  font-size: 0.88rem;
  color: var(--color-gray);
  padding: 8px 16px 16px;
  line-height: 1.6;
}

/* 题材分类标签墙 */
.category-tags {
  padding: 48px 0;
  border-bottom: 1px solid var(--color-line);
}

.tag-groups {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.tag-group h3 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-line);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-list li a {
  display: inline-block;
  padding: 6px 14px;
  font-size: 0.85rem;
  color: var(--color-gray);
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-line);
  border-radius: 20px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

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

/* 阅读规则入口 */
.reader-entry {
  padding: 48px 0;
}

.reader-entry-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.reader-entry-item {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: border-color 0.2s ease;
}

.reader-entry-item:hover {
  border-color: var(--color-accent);
}

.reader-entry-item h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.reader-entry-item p {
  font-size: 0.9rem;
  color: var(--color-gray);
  line-height: 1.6;
}

/* ==========================================================================
   pages / feature 本期专题
   ========================================================================== */

.feature-intro {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: start;
  margin-bottom: 48px;
}

.feature-intro-text .section-title {
  margin-bottom: 16px;
}

.feature-intro-text p {
  font-size: 0.98rem;
  color: var(--color-gray);
  line-height: 1.8;
  margin-bottom: 14px;
}

.feature-intro-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

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

.feature-intro-media figcaption {
  font-size: 0.82rem;
  color: var(--color-gray);
  text-align: center;
  padding: 10px 0;
  background-color: var(--color-card-bg);
}

/* 作品卡片网格 */
.work-cards-section {
  margin-bottom: 48px;
}

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

.work-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.work-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 4px 12px rgba(28, 28, 28, 0.08);
}

.work-card-media {
  overflow: hidden;
}

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

.work-card-body {
  padding: 16px;
}

.work-card-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.work-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.work-card-tags a {
  font-size: 0.78rem;
  color: var(--color-accent);
  background-color: rgba(179, 64, 42, 0.08);
  padding: 2px 10px;
  border-radius: 12px;
}

.work-card-desc {
  font-size: 0.88rem;
  color: var(--color-gray);
  line-height: 1.6;
}

/* 编辑部手记 */
.editorial-note {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 48px;
}

.editorial-note-content p {
  font-size: 0.95rem;
  color: var(--color-gray);
  line-height: 1.8;
  margin-bottom: 12px;
}

.editorial-note-content a {
  color: var(--color-accent);
  text-decoration: underline;
}

/* 往期专题 */
.past-features {
  margin-bottom: 48px;
}

.past-features-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.past-feature-item a {
  display: block;
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 20px 24px;
  transition: border-color 0.2s ease;
}

.past-feature-item a:hover {
  border-color: var(--color-accent);
}

.past-feature-item h3 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.past-feature-item p {
  font-size: 0.88rem;
  color: var(--color-gray);
  line-height: 1.6;
}

/* 专题页底部阅读入口 */
.reader-entry-box {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 24px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.reader-entry-box p {
  font-size: 0.95rem;
  color: var(--color-gray);
}

.reader-entry-box a {
  color: var(--color-accent);
  font-weight: 600;
}

/* ==========================================================================
   pages / editorial 选编流程
   ========================================================================== */

.timeline-section {
  margin-bottom: 56px;
}

.timeline-steps {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
  padding: 24px 0;
}

.timeline-steps::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: var(--color-line);
  transform: translateX(-50%);
}

.timeline-step {
  position: relative;
  width: 50%;
  padding: 0 40px 40px;
}

.timeline-step:nth-child(odd) {
  left: 0;
  text-align: right;
}

.timeline-step:nth-child(even) {
  left: 50%;
  text-align: left;
}

.step-marker {
  position: absolute;
  top: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--color-ink);
  color: var(--color-paper);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

.timeline-step:nth-child(odd) .step-marker {
  right: -22px;
}

.timeline-step:nth-child(even) .step-marker {
  left: -22px;
}

.step-number {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
}

.step-content {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.step-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-text {
  font-size: 0.92rem;
  color: var(--color-gray);
  line-height: 1.7;
}

/* 内容组织说明 */
.organization-section {
  margin-bottom: 56px;
}

.organization-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.organization-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.org-card-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-line);
}

.org-card-text {
  font-size: 0.92rem;
  color: var(--color-gray);
  line-height: 1.8;
  margin-bottom: 12px;
}

.text-link {
  color: var(--color-accent);
  font-size: 0.9rem;
  font-weight: 600;
}

/* 阅读设定入口卡片 */
.reader-link-section {
  margin-bottom: 48px;
}

.reader-link-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 32px 40px;
  text-align: center;
}

.reader-link-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.reader-link-text {
  font-size: 0.95rem;
  color: var(--color-gray);
  margin-bottom: 20px;
}

.reader-link-button {
  display: inline-block;
  padding: 12px 32px;
  background-color: var(--color-ink);
  color: var(--color-paper);
  border-radius: var(--radius);
  font-size: 0.95rem;
  transition: background-color 0.2s ease;
}

.reader-link-button:hover {
  background-color: var(--color-accent);
  color: var(--color-paper);
}

/* ==========================================================================
   pages / catalog 全部收录
   ========================================================================== */

.layout-shell.sidebar-left {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 40px;
  align-items: start;
}

.catalog-sidebar {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: sticky;
  top: calc(var(--header-height) + 24px);
  max-height: calc(100vh - var(--header-height) - 48px);
  overflow-y: auto;
}

.sidebar-title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-ink);
}

.category-group {
  margin-bottom: 20px;
}

.category-group-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 8px;
  letter-spacing: 0.04em;
}

.category-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.category-tag-list li a {
  display: inline-block;
  padding: 4px 12px;
  font-size: 0.82rem;
  color: var(--color-gray);
  background-color: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: 16px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.category-tag-list li a:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

/* 作品列表 */
.catalog-works {
  min-width: 0;
}

.catalog-works-title {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-ink);
}

.work-section {
  margin-bottom: 40px;
  scroll-margin-top: calc(var(--header-height) + 24px);
}

.work-section-title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 16px;
  padding-left: 12px;
  border-left: 4px solid var(--color-accent);
}

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

.work-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 12px 16px;
  transition: border-color 0.2s ease;
}

.work-item:hover {
  border-color: var(--color-accent);
}

.work-thumb {
  width: 56px;
  height: 72px;
  object-fit: cover;
  border-radius: var(--radius);
  flex-shrink: 0;
}

.work-info {
  flex: 1;
  min-width: 0;
}

.work-name {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.work-desc {
  font-size: 0.85rem;
  color: var(--color-gray);
  line-height: 1.5;
  margin-bottom: 6px;
}

.work-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.work-tags a {
  font-size: 0.75rem;
  color: var(--color-accent);
  background-color: rgba(179, 64, 42, 0.08);
  padding: 2px 8px;
  border-radius: 10px;
}

/* 阅读提示 */
.reader-hint {
  margin-top: 48px;
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
}

.reader-hint-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.reader-hint-text {
  font-size: 0.9rem;
  color: var(--color-gray);
  margin-bottom: 16px;
}

.reader-hint-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hint-link {
  display: inline-block;
  padding: 8px 20px;
  font-size: 0.9rem;
  color: var(--color-ink);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  transition: border-color 0.2s ease, color 0.2s ease;
}

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

/* ==========================================================================
   pages / mailbox 读者信箱
   ========================================================================== */

.feedback-flow-section {
  margin-bottom: 48px;
}

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

.feedback-step {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.feedback-step .step-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-line);
}

.feedback-step p {
  font-size: 0.9rem;
  color: var(--color-gray);
  line-height: 1.7;
}

.faq-section {
  margin-bottom: 48px;
}

/* 相关链接 */
.related-links-section {
  margin-bottom: 48px;
}

.related-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  max-width: 720px;
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.related-link {
  display: block;
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 16px 20px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: border-color 0.2s ease;
}

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

/* ==========================================================================
   pages / reader 阅读设定
   ========================================================================== */

.page-layout.sidebar-left {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
  align-items: start;
}

.setting-aside {
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

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

.demo-figure img {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--color-line);
}

.demo-figure figcaption {
  font-size: 0.82rem;
  color: var(--color-gray);
  text-align: center;
  padding-top: 10px;
}

.setting-content {
  min-width: 0;
}

.setting-intro {
  margin-bottom: 40px;
}

.setting-intro p {
  font-size: 0.95rem;
  color: var(--color-gray);
  line-height: 1.8;
  margin-bottom: 12px;
}

.setting-steps {
  margin-bottom: 40px;
}

.steps-list {
  counter-reset: step;
}

.step-item {
  position: relative;
  padding: 0 0 24px 48px;
  counter-increment: step;
}

.step-item::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-ink);
  color: var(--color-paper);
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-item .step-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.step-item p {
  font-size: 0.9rem;
  color: var(--color-gray);
  line-height: 1.7;
}

/* 阅读常见问题 */
.reading-faq {
  margin-bottom: 48px;
}

.reading-faq .faq-item summary {
  padding: 18px 0;
  font-size: 0.98rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

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

.reading-faq .faq-item summary::after {
  content: '+';
  font-size: 1.3rem;
  color: var(--color-accent);
  flex-shrink: 0;
}

.reading-faq .faq-item[open] summary::after {
  transform: rotate(45deg);
}

.reading-faq .faq-item p {
  padding: 0 0 18px;
  color: var(--color-gray);
  font-size: 0.92rem;
  line-height: 1.8;
}

/* 相关页面链接 */
.link-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.link-group a {
  display: inline-block;
  padding: 10px 24px;
  font-size: 0.9rem;
  color: var(--color-ink);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  transition: border-color 0.2s ease, color 0.2s ease;
}

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

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

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  flex: 1;
}

.error-panel {
  text-align: center;
  max-width: 520px;
  padding: 48px;
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
}

.error-code {
  font-family: var(--font-serif);
  font-size: 4rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1.2;
  margin-bottom: 16px;
}

.error-panel h1 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 0.95rem;
  color: var(--color-gray);
  margin-bottom: 24px;
}

.error-home-link {
  display: inline-block;
  padding: 12px 32px;
  background-color: var(--color-ink);
  color: var(--color-paper);
  border-radius: var(--radius);
  font-size: 0.95rem;
  transition: background-color 0.2s ease;
}

.error-home-link:hover {
  background-color: var(--color-accent);
  color: var(--color-paper);
}

/* ==========================================================================
   responsive / 响应式
   ========================================================================== */

@media (max-width: 1024px) {
  .directory-grid,
  .picks-grid,
  .work-cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .tag-groups {
    grid-template-columns: repeat(2, 1fr);
  }

  .layout-shell.sidebar-left {
    grid-template-columns: 220px 1fr;
    gap: 24px;
  }

  .timeline-steps::before {
    left: 22px;
  }

  .timeline-step {
    width: 100%;
    padding: 0 0 32px 64px;
    left: 0 !important;
    text-align: left !important;
  }

  .timeline-step .step-marker {
    left: 0 !important;
    right: auto !important;
    width: 44px;
    height: 44px;
  }
}

@media (max-width: 768px) {
  .header-shell {
    height: 64px;
    padding: 0 16px;
    gap: 12px;
  }

  .brand-slogan {
    display: none;
  }

  .brand-name {
    font-size: 1.25rem;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    order: 3;
  }

  .nav-list {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background-color: var(--color-paper);
    border-bottom: 1px solid var(--color-line);
    flex-direction: column;
    align-items: stretch;
    padding: 12px 16px;
    gap: 4px;
    box-shadow: 0 8px 16px rgba(28, 28, 28, 0.08);
    z-index: 99;
  }

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

  .nav-list li a {
    padding: 12px 16px;
    font-size: 1rem;
  }

  .reader-entry-link {
    padding: 8px 14px;
    font-size: 0.85rem;
  }

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

  .page-header {
    padding: 20px 0 24px;
    margin-bottom: 32px;
  }

  .page-title {
    font-size: 1.7rem;
  }

  .section-block {
    padding: 32px 0;
  }

  .section-title {
    font-size: 1.3rem;
  }

  /* 首页 */
  .home-main {
    padding: 0 16px;
  }

  .hero-magazine {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 32px 0;
  }

  .hero-title {
    font-size: 1.8rem;
  }

  .hero-cover {
    order: -1;
  }

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

  .directory-grid {
    grid-template-columns: 1fr;
  }

  .picks-grid {
    grid-template-columns: 1fr;
  }

  .tag-groups {
    grid-template-columns: 1fr;
  }

  .reader-entry-links {
    grid-template-columns: 1fr;
  }

  .timeline-content {
    flex-direction: column;
    align-items: flex-start;
  }

  .timeline-content img {
    width: 100%;
    height: 160px;
  }

  /* 内页通用 */
  .feature-intro {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .feature-intro-media {
    order: -1;
  }

  .work-cards-grid {
    grid-template-columns: 1fr;
  }

  .organization-grid {
    grid-template-columns: 1fr;
  }

  .feedback-steps {
    grid-template-columns: 1fr;
  }

  .layout-shell.sidebar-left {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .catalog-sidebar {
    position: static;
    max-height: none;
    overflow: visible;
    padding: 16px;
  }

  .category-tag-list {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 8px;
    -webkit-overflow-scrolling: touch;
  }

  .category-tag-list li {
    flex-shrink: 0;
  }

  .page-layout.sidebar-left {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .setting-aside {
    position: static;
    order: -1;
  }

  .related-links {
    grid-template-columns: 1fr;
  }

  .reader-entry-box {
    flex-direction: column;
    align-items: flex-start;
    padding: 20px;
  }

  .footer-shell {
    padding: 32px 16px 24px;
  }

  .footer-nav {
    flex-direction: column;
    gap: 4px 0;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    text-align: center;
  }

  .work-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .work-thumb {
    width: 100%;
    height: 140px;
  }

  .reader-link-card {
    padding: 24px;
  }

  .error-panel {
    padding: 32px 20px;
  }

  .error-code {
    font-size: 3rem;
  }
}