/* ============================================================
   BASE — 全站基础变量、重置与字体
   ============================================================ */
:root {
  --paper: #faf7f0;
  --ink: #27221f;
  --spine-cyan: #4a90a4;
  --spine-pink: #c6708f;
  --spine-orange: #d68c5c;
  --spine-purple: #7c6fa8;
  --update-red: #b23a48;
  --line: #e3dbcf;
  --white: #ffffff;
  --ink-soft: #5a524a;
  --ink-light: #7c736a;
  --shadow-sm: 0 1px 3px rgba(39, 34, 31, 0.08);
  --shadow-md: 0 4px 12px rgba(39, 34, 31, 0.1);
  --radius-sm: 4px;
  --radius-md: 8px;
  --container: 1200px;
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

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

body {
  font-family: var(--font-stack);
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink);
  background-color: var(--paper);
}

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

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

a:hover {
  color: var(--spine-cyan);
}

ul,
ol {
  list-style: none;
}

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

.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;
}

/* ============================================================
   LAYOUT — 全站骨架：页头、页脚、主容器
   ============================================================ */
.site-header {
  background-color: var(--paper);
  border-bottom: 1px solid var(--line);
}

.header-top {
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px 24px 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.header-brand {
  display: flex;
  align-items: baseline;
  gap: 12px;
  min-width: 0;
}

.brand-link {
  display: inline-flex;
  align-items: center;
}

.brand-name {
  font-size: 24px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.5px;
}

.header-slogan {
  font-size: 13px;
  color: var(--ink-soft);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

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

.meta-link {
  font-size: 13px;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 4px 12px;
  display: inline-block;
  background-color: var(--white);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.meta-link:hover {
  border-color: var(--spine-cyan);
  color: var(--spine-cyan);
}

.header-nav {
  border-top: 1px solid var(--line);
  background-color: var(--paper);
}

.site-nav {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  min-height: 46px;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  font-size: 14px;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background-color: var(--white);
}

.nav-toggle-icon {
  display: block;
  width: 16px;
  height: 2px;
  background-color: var(--ink);
  position: relative;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background-color: var(--ink);
}

.nav-toggle-icon::before {
  top: -6px;
}

.nav-toggle-icon::after {
  top: 6px;
}

.nav-toggle-text {
  font-size: 14px;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-list li {
  margin: 0;
}

.nav-list a {
  display: block;
  padding: 10px 16px;
  font-size: 15px;
  color: var(--ink);
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-list a:hover {
  background-color: rgba(74, 144, 164, 0.08);
  color: var(--spine-cyan);
}

.nav-list a.is-current {
  color: var(--spine-cyan);
  font-weight: 600;
  background-color: rgba(74, 144, 164, 0.1);
}

.site-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 32px 24px 48px;
}

.site-footer {
  background-color: var(--white);
  border-top: 1px solid var(--line);
  margin-top: 16px;
}

.footer-columns {
  max-width: var(--container);
  margin: 0 auto;
  padding: 40px 24px 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.footer-col h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--line);
}

.footer-links li {
  margin-bottom: 6px;
}

.footer-links a {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.5;
}

.footer-links a:hover {
  color: var(--spine-cyan);
}

.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 16px 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--ink-light);
}

/* ============================================================
   COMPONENTS — 通用组件样式
   ============================================================ */
.section-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
  position: relative;
  padding-left: 14px;
  margin-bottom: 12px;
  line-height: 1.4;
}

.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  border-radius: 2px;
  background-color: var(--spine-cyan);
}

.section-desc {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 20px;
  max-width: 720px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--ink-light);
  margin-bottom: 20px;
  flex-wrap: wrap;
}

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

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

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

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

/* 页标题区 */
.page-header {
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.page-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.3;
  margin-bottom: 8px;
  position: relative;
  padding-left: 14px;
}

.page-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  border-radius: 2px;
  background-color: var(--spine-cyan);
}

.page-description {
  font-size: 15px;
  color: var(--ink-soft);
  max-width: 760px;
  line-height: 1.7;
}

/* 相关链接条 */
.related-links {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 40px;
  padding: 16px 20px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

.related-links-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  margin-right: 4px;
}

.related-links-item {
  font-size: 14px;
  color: var(--spine-cyan);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 4px 12px;
  background-color: var(--paper);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.related-links-item:hover {
  border-color: var(--spine-cyan);
  background-color: rgba(74, 144, 164, 0.06);
}

/* 通用入口卡 */
.entry-card {
  display: block;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.entry-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--spine-cyan);
}

.entry-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 6px;
}

.entry-text {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.6;
}

.entry-more {
  display: inline-block;
  margin-top: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--spine-cyan);
}

/* ============================================================
   PAGES — 首页
   ============================================================ */
.home-main {
  padding-top: 28px;
}

/* 首屏数据目录区 */
.hero-directory {
  margin-bottom: 48px;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
  align-items: stretch;
}

.hero-catalog {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 28px;
}

.catalog-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.3;
  margin-bottom: 10px;
}

.catalog-intro {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 20px;
  line-height: 1.7;
}

.catalog-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.tag-link {
  display: block;
  padding: 10px 14px;
  font-size: 14px;
  color: var(--ink);
  background-color: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.tag-link:hover {
  border-color: var(--spine-cyan);
  background-color: rgba(74, 144, 164, 0.06);
  color: var(--spine-cyan);
}

.hero-visual {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.hero-figure {
  flex: 1;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--line);
  background-color: var(--white);
}

.hero-image {
  width: 100%;
  height: 100%;
  min-height: 240px;
  object-fit: cover;
}

.hero-caption {
  padding: 12px 16px;
  font-size: 14px;
  color: var(--ink-soft);
  background-color: var(--white);
  border-top: 1px solid var(--line);
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.cta-link {
  display: inline-block;
  padding: 10px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
  background-color: var(--spine-cyan);
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease;
}

.cta-link:hover {
  background-color: #3d7a8b;
  color: var(--white);
}

.update-badge {
  display: inline-block;
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 500;
  color: var(--update-red);
  background-color: rgba(178, 58, 72, 0.08);
  border: 1px solid rgba(178, 58, 72, 0.25);
  border-radius: var(--radius-sm);
}

/* 最近更新封面墙 */
.latest-wall {
  margin-bottom: 48px;
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 8px;
}

.section-head .section-title {
  margin-bottom: 0;
}

.section-more {
  font-size: 14px;
  color: var(--spine-cyan);
  font-weight: 500;
  flex-shrink: 0;
}

.section-more:hover {
  text-decoration: underline;
}

.cover-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 16px;
}

.cover-card {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.cover-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.cover-link {
  display: block;
  position: relative;
}

.cover-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-bottom: 1px solid var(--line);
}

.cover-tag {
  position: absolute;
  top: 10px;
  left: 10px;
  padding: 3px 10px;
  font-size: 12px;
  color: var(--white);
  background-color: var(--spine-cyan);
  border-radius: var(--radius-sm);
}

.update-status {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 3px 10px;
  font-size: 12px;
  font-weight: 600;
  color: var(--white);
  background-color: var(--update-red);
  border-radius: var(--radius-sm);
}

.cover-title {
  padding: 12px 14px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.4;
  min-height: 44px;
}

/* 人气榜单与题材分类双列 */
.rank-tags-duo {
  margin-bottom: 48px;
}

.duo-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.rank-preview,
.tags-preview {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 24px;
}

.block-intro {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 16px;
}

.rank-list {
  counter-reset: rank-counter;
  margin-bottom: 16px;
}

.rank-list li {
  margin-bottom: 6px;
}

.rank-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  background-color: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 14px;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.rank-item:hover {
  border-color: var(--spine-cyan);
  background-color: rgba(74, 144, 164, 0.04);
}

.rank-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  font-size: 16px;
  font-weight: 700;
  color: var(--spine-cyan);
  background-color: rgba(74, 144, 164, 0.1);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.duo-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--spine-cyan);
}

.duo-link:hover {
  text-decoration: underline;
}

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

.tag-chip {
  display: inline-block;
  padding: 6px 14px;
  font-size: 13px;
  color: var(--ink);
  background-color: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.tag-chip:hover {
  border-color: var(--spine-cyan);
  background-color: rgba(74, 144, 164, 0.06);
  color: var(--spine-cyan);
}

/* 专题推荐双卡 */
.feature-teasers {
  margin-bottom: 48px;
}

.feature-pair {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 8px;
}

.feature-card {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: box-shadow 0.2s ease;
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
}

.feature-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
}

.feature-desc {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.6;
  margin-bottom: 12px;
}

.feature-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--spine-cyan);
}

.feature-link:hover {
  text-decoration: underline;
}

/* 阅读指南与版权双入口 */
.guide-about-entry {
  margin-bottom: 24px;
}

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

/* ============================================================
   PAGES — 内页公共
   ============================================================ */
.inner-main {
  padding-top: 28px;
}

/* ============================================================
   PAGES — 题材分类页 (tags)
   ============================================================ */
.tags-index {
  margin-bottom: 40px;
}

.tag-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.tag-item {
  display: inline-block;
  padding: 8px 16px;
  font-size: 14px;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background-color: var(--white);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.tag-item:hover {
  box-shadow: var(--shadow-sm);
  border-color: currentColor;
}

.tag-spine-cyan {
  border-left: 4px solid var(--spine-cyan);
}

.tag-spine-pink {
  border-left: 4px solid var(--spine-pink);
}

.tag-spine-orange {
  border-left: 4px solid var(--spine-orange);
}

.tag-spine-purple {
  border-left: 4px solid var(--spine-purple);
}

.genre-groups {
  margin-bottom: 40px;
}

.genre-block {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  overflow: hidden;
}

.genre-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
  background-color: var(--paper);
}

.spine-mark {
  display: block;
  width: 6px;
  height: 28px;
  border-radius: 3px;
  flex-shrink: 0;
}

.spine-cyan {
  background-color: var(--spine-cyan);
}

.spine-pink {
  background-color: var(--spine-pink);
}

.spine-orange {
  background-color: var(--spine-orange);
}

.spine-purple {
  background-color: var(--spine-purple);
}

.genre-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  flex-shrink: 0;
}

.genre-desc {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.5;
}

.genre-body {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 24px;
  padding: 20px;
}

.genre-figure {
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--line);
}

.genre-figure img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.genre-info {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.genre-info p {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.6;
}

.genre-info strong {
  font-weight: 600;
  color: var(--ink);
  margin-right: 4px;
}

.guide-promo {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 20px 24px;
}

.guide-promo p {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

.text-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--spine-cyan);
}

.text-link:hover {
  text-decoration: underline;
}

/* ============================================================
   PAGES — 最近更新页 (latest)
   ============================================================ */
.legend-bar {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 32px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.legend-tag {
  display: inline-block;
  padding: 3px 10px;
  font-size: 12px;
  font-weight: 600;
  color: var(--white);
  border-radius: var(--radius-sm);
}

.tag-new {
  background-color: var(--update-red);
}

.tag-continue {
  background-color: var(--spine-cyan);
}

.legend-text {
  font-size: 14px;
  color: var(--ink-soft);
}

.update-timeline {
  margin-bottom: 32px;
}

.timeline-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 16px;
}

.timeline-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  transition: box-shadow 0.2s ease;
}

.timeline-item:hover {
  box-shadow: var(--shadow-sm);
}

.timeline-cover {
  width: 72px;
  height: 96px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  flex-shrink: 0;
}

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

.timeline-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 4px;
}

.timeline-tag {
  display: inline-block;
  padding: 2px 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--white);
  border-radius: var(--radius-sm);
  margin-bottom: 4px;
}

.timeline-desc {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.5;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.timeline-time {
  font-size: 13px;
  color: var(--ink-light);
  flex-shrink: 0;
  text-align: right;
}

.entry-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 16px;
}

.entry-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--spine-cyan);
}

.entry-link:hover {
  text-decoration: underline;
}

/* ============================================================
   PAGES — 人气榜单页 (rank)
   ============================================================ */
.rank-banner {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--line);
  margin-bottom: 32px;
}

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

.rank-banner figcaption {
  padding: 12px 16px;
  font-size: 14px;
  color: var(--ink-soft);
  background-color: var(--white);
  border-top: 1px solid var(--line);
}

.rank-note-section {
  margin-bottom: 32px;
}

.rank-note-text {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.7;
  max-width: 800px;
}

.rank-columns {
  margin-bottom: 32px;
}

.rank-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 16px;
}

.rank-col {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 20px;
}

.rank-col-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 6px;
}

.rank-col-desc {
  font-size: 13px;
  color: var(--ink-soft);
  margin-bottom: 16px;
  line-height: 1.5;
}

.rank-col .rank-list li {
  margin-bottom: 8px;
}

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

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

.rank-item-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  display: block;
  margin-bottom: 2px;
}

.rank-item-reason {
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.4;
  display: block;
}

.rank-cta-section {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: left;
  margin-bottom: 16px;
}

.cta-text {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 12px;
  line-height: 1.6;
}

/* ============================================================
   PAGES — 阅读指南页 (guide)
   ============================================================ */
.guide-path-section {
  margin-bottom: 40px;
}

.path-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 16px;
}

.path-step {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 20px;
  position: relative;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  background-color: var(--spine-cyan);
  border-radius: 50%;
  margin-bottom: 10px;
}

.step-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 6px;
}

.step-text {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.6;
}

.guide-detail-section {
  margin-bottom: 40px;
}

.guide-columns {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 16px;
}

.guide-col {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 24px;
}

.col-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--line);
}

.col-text {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.7;
  margin-bottom: 12px;
}

.guide-media-section {
  margin-bottom: 40px;
}

.guide-figure {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--line);
  background-color: var(--white);
}

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

.guide-figure figcaption {
  padding: 12px 16px;
  font-size: 14px;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
}

.faq-section {
  margin-bottom: 40px;
}

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

.faq-item {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-question {
  padding: 14px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 40px;
  transition: background-color 0.2s ease;
}

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

.faq-question::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--spine-cyan);
  font-weight: 400;
}

.faq-item[open] .faq-question {
  background-color: var(--paper);
}

.faq-item[open] .faq-question::after {
  content: "−";
}

.faq-answer {
  padding: 0 20px 16px;
  border-top: 1px solid var(--line);
}

.faq-answer p {
  padding-top: 12px;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.7;
}

.guide-entry-section {
  margin-bottom: 16px;
}

.entry-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 16px;
}

.entry-card-title {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 6px;
}

.entry-card-text {
  display: block;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.5;
}

/* ============================================================
   PAGES — 专题推荐页 (feature)
   ============================================================ */
.feature-grid {
  margin-bottom: 40px;
}

.feature-grid .feature-card {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 0;
  padding: 0;
  overflow: hidden;
  margin-bottom: 24px;
}

.feature-card-media {
  position: relative;
  overflow: hidden;
}

.feature-card-media img {
  width: 100%;
  height: 100%;
  min-height: 240px;
  object-fit: cover;
}

.feature-card-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--white);
  background-color: var(--spine-purple);
  border-radius: var(--radius-sm);
}

.feature-card-body {
  padding: 24px;
}

.feature-card-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 10px;
}

.feature-card-editorial {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.7;
  margin-bottom: 16px;
}

.feature-card-list {
  margin-bottom: 16px;
}

.feature-card-list li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 6px 0;
  font-size: 14px;
  color: var(--ink);
  border-bottom: 1px dashed var(--line);
}

.list-index {
  font-size: 13px;
  font-weight: 600;
  color: var(--spine-cyan);
  flex-shrink: 0;
  min-width: 20px;
}

.feature-card-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--spine-cyan);
  margin-top: 4px;
}

.feature-card-link:hover {
  text-decoration: underline;
}

.extend-read {
  margin-bottom: 16px;
}

.extend-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 16px;
}

.extend-link {
  display: block;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.extend-link:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--spine-cyan);
}

.extend-link-title {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 6px;
}

.extend-link-desc {
  display: block;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.5;
}

/* ============================================================
   PAGES — 版权与反馈页 (about)
   ============================================================ */
.about-section {
  margin-bottom: 32px;
}

.about-layout {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 32px;
  align-items: start;
}

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

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

.boundary-item {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 20px;
}

.boundary-heading {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--line);
}

.boundary-list-inner {
  padding-left: 4px;
}

.boundary-list-inner li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.7;
  margin-bottom: 4px;
}

.boundary-list-inner li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--spine-cyan);
}

.about-media {
  position: sticky;
  top: 24px;
}

.about-figure {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--line);
  background-color: var(--white);
}

.about-figure img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

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

.about-cta {
  margin-bottom: 16px;
}

.cta-card {
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
}

.cta-card .cta-text {
  margin-bottom: 16px;
}

/* ============================================================
   PAGES — 404 页
   ============================================================ */
.error-main {
  padding-top: 48px;
  padding-bottom: 64px;
}

.error-section {
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
  padding: 40px 24px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

.error-code {
  font-size: 64px;
  font-weight: 700;
  color: var(--spine-cyan);
  line-height: 1;
  margin-bottom: 12px;
}

.error-section h1 {
  font-size: 22px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 10px;
}

.error-desc {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.7;
  margin-bottom: 24px;
}

.error-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.btn-back {
  display: inline-block;
  padding: 10px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
  background-color: var(--spine-cyan);
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease;
}

.btn-back:hover {
  background-color: #3d7a8b;
  color: var(--white);
}

.btn-link {
  display: inline-block;
  padding: 10px 20px;
  font-size: 14px;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background-color: var(--paper);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.btn-link:hover {
  border-color: var(--spine-cyan);
  color: var(--spine-cyan);
}

/* ============================================================
   RESPONSIVE — 1024px 断点
   ============================================================ */
@media (max-width: 1024px) {
  .hero-layout {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

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

  .duo-layout {
    gap: 24px;
  }

  .genre-body {
    grid-template-columns: 200px 1fr;
    gap: 16px;
  }

  .rank-grid {
    gap: 16px;
  }

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

  .feature-grid .feature-card {
    grid-template-columns: 240px 1fr;
  }

  .about-layout {
    grid-template-columns: 1.2fr 1fr;
    gap: 24px;
  }
}

/* ============================================================
   RESPONSIVE — 640px 断点
   ============================================================ */
@media (max-width: 640px) {
  .header-top {
    padding: 12px 16px 8px;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .header-brand {
    width: 100%;
    justify-content: space-between;
  }

  .header-slogan {
    font-size: 12px;
    max-width: 60%;
  }

  .header-meta {
    width: 100%;
  }

  .meta-link {
    display: block;
    text-align: center;
    font-size: 13px;
    padding: 6px 12px;
  }

  .site-nav {
    padding: 8px 16px;
    min-height: auto;
  }

  .nav-toggle {
    display: inline-flex;
    min-height: 44px;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    padding: 8px 0;
    gap: 2px;
  }

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

  .nav-list a {
    padding: 12px 16px;
    font-size: 15px;
    border-radius: var(--radius-sm);
  }

  .site-main {
    padding: 24px 16px 40px;
  }

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

  .page-description {
    font-size: 14px;
  }

  .hero-layout {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .hero-catalog {
    padding: 20px;
  }

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

  .catalog-list {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .hero-image {
    min-height: 180px;
  }

  .hero-cta {
    flex-direction: column;
    align-items: stretch;
  }

  .cta-link {
    text-align: center;
  }

  .update-badge {
    text-align: center;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .cover-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .cover-img {
    height: 160px;
  }

  .cover-title {
    font-size: 14px;
    padding: 10px 12px;
    min-height: auto;
  }

  .duo-layout {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .feature-pair {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .entry-pair {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .footer-columns {
    grid-template-columns: 1fr 1fr;
    gap: 24px 16px;
    padding: 32px 16px 16px;
  }

  .footer-bottom {
    padding: 12px 16px;
  }

  .footer-bottom p {
    font-size: 12px;
    line-height: 1.5;
  }

  /* 内页通用 */
  .breadcrumb {
    font-size: 13px;
    margin-bottom: 16px;
  }

  .page-header {
    margin-bottom: 24px;
  }

  .related-links {
    padding: 12px 16px;
    gap: 8px;
  }

  .related-links-label {
    width: 100%;
    margin-bottom: 4px;
  }

  /* tags 页 */
  .tag-strip {
    gap: 8px;
  }

  .tag-item {
    padding: 6px 12px;
    font-size: 13px;
  }

  .genre-head {
    flex-wrap: wrap;
    padding: 12px 16px;
    gap: 8px;
  }

  .genre-name {
    font-size: 16px;
  }

  .genre-desc {
    width: 100%;
    font-size: 13px;
  }

  .genre-body {
    grid-template-columns: 1fr;
    padding: 16px;
  }

  .genre-figure img {
    height: 160px;
  }

  /* latest 页 */
  .legend-bar {
    gap: 12px;
    padding: 12px 16px;
  }

  .legend-item {
    width: 100%;
  }

  .timeline-item {
    flex-wrap: wrap;
    gap: 10px;
    padding: 12px;
  }

  .timeline-cover {
    width: 56px;
    height: 76px;
  }

  .timeline-info {
    flex: 1;
    min-width: calc(100% - 72px);
  }

  .timeline-name {
    font-size: 15px;
  }

  .timeline-desc {
    white-space: normal;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
  }

  .timeline-time {
    width: 100%;
    text-align: left;
    padding-left: 72px;
    font-size: 13px;
  }

  .entry-strip {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  /* rank 页 */
  .rank-banner img {
    height: 180px;
  }

  .rank-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* guide 页 */
  .path-steps {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .path-step {
    padding: 16px;
  }

  .guide-columns {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .guide-figure img {
    height: 200px;
  }

  .faq-question {
    font-size: 14px;
    padding: 12px 36px 12px 16px;
  }

  .faq-answer {
    padding: 0 16px 14px;
  }

  .entry-links {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* feature 页 */
  .feature-grid .feature-card {
    grid-template-columns: 1fr;
    margin-bottom: 16px;
  }

  .feature-card-media img {
    height: 200px;
    min-height: 0;
  }

  .feature-card-body {
    padding: 20px;
  }

  .extend-links {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* about 页 */
  .about-layout {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .about-media {
    position: static;
  }

  .about-figure img {
    height: 180px;
  }

  /* 404 */
  .error-code {
    font-size: 48px;
  }

  .error-actions {
    flex-direction: column;
    width: 100%;
  }

  .btn-back,
  .btn-link {
    width: 100%;
    text-align: center;
  }
}

/* ============================================================
   RESPONSIVE — 390px 极窄屏微调
   ============================================================ */
@media (max-width: 390px) {
  .brand-name {
    font-size: 20px;
  }

  .catalog-list {
    grid-template-columns: 1fr;
  }

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

  .cover-img {
    height: 180px;
  }

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

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

  .tag-item {
    flex-shrink: 0;
  }

  .timeline-info {
    min-width: 100%;
  }

  .timeline-time {
    padding-left: 0;
  }
}