/* ==========================================================================
   歪歪漫画免费观看 · 全站样式表
   结构：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. base —— 变量、重置、字体、基础排版
   -------------------------------------------------------------------------- */

:root {
  --ink: #1B2440;
  --ink-soft: #2C3757;
  --paper: #F7F4EF;
  --paper-card: #FFFFFF;
  --cover: #E9E2D8;
  --red: #E5484D;
  --red-deep: #C93A3F;
  --teal: #3AAFA9;
  --slate: #5B6B7C;
  --line: #DCD5CA;
  --line-soft: #E8E2D9;
  --shadow-sm: 0 1px 2px rgba(27, 36, 64, 0.06);
  --shadow-md: 0 6px 18px rgba(27, 36, 64, 0.10);
  --radius: 6px;
  --radius-sm: 4px;
  --wrap: 1180px;
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

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

body {
  margin: 0;
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

h1 {
  font-size: clamp(30px, 4vw, 40px);
  line-height: 1.25;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
}

p {
  margin: 0;
}

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

dl,
dd,
dt,
figure,
figcaption {
  margin: 0;
}

a {
  color: var(--ink-soft);
  text-decoration: none;
  transition: color 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

a:hover,
a:focus-visible {
  color: var(--red);
}

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

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

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

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

.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: var(--paper);
  font-family: var(--sans);
  color: var(--ink);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background-color: rgba(247, 244, 239, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: saturate(180%) blur(6px);
}

.header-inner {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
  min-height: 66px;
  display: flex;
  align-items: center;
  gap: 20px;
}

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

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

.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-sm);
  background-color: var(--ink);
  position: relative;
  flex: 0 0 auto;
}

.brand-mark::before {
  content: "";
  position: absolute;
  inset: 7px 6px 7px 6px;
  border-left: 3px solid var(--paper);
  border-right: 3px solid var(--paper);
}

.brand-mark::after {
  content: "";
  position: absolute;
  left: 6px;
  right: 6px;
  top: 50%;
  height: 3px;
  margin-top: -1.5px;
  background-color: var(--red);
}

.brand-name {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 700;
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background-color: var(--paper-card);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  flex: 0 0 auto;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--ink);
  border-radius: 2px;
}

.site-nav {
  margin-left: auto;
}

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

.nav-list li {
  display: block;
}

.nav-list a {
  display: inline-block;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  color: var(--ink-soft);
  white-space: nowrap;
}

.nav-list a:hover {
  background-color: var(--cover);
  color: var(--ink);
}

.nav-list a.is-current {
  color: var(--red);
  font-weight: 600;
  background-color: rgba(229, 72, 77, 0.08);
}

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

.inner-main {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 22px 24px 64px;
}

.home-main {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 26px 24px 64px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 13px;
  color: var(--slate);
  margin-bottom: 14px;
}

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

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

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

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

.breadcrumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
}

.page-header {
  margin-bottom: 18px;
}

.page-title {
  font-family: var(--serif);
  font-size: clamp(30px, 4vw, 40px);
  font-weight: 700;
  line-height: 1.25;
  color: var(--ink);
  margin: 0;
}

.page-lead,
.page-lede {
  margin: 10px 0 0;
  max-width: 780px;
  font-size: 16px;
  color: var(--ink-soft);
}

.page-kicker {
  margin: 0 0 6px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--red);
  font-weight: 600;
}

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 40px;
  align-items: start;
  margin-top: 22px;
}

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

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

.site-footer {
  margin-top: auto;
  background-color: var(--ink);
  color: #C9D1E0;
  font-family: var(--sans);
}

.footer-inner {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 46px 24px 26px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr 1.2fr;
  gap: 28px;
}

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

.footer-name {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 10px;
}

.footer-intro {
  font-size: 13.5px;
  line-height: 1.7;
  color: #A7B2C6;
}

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

.footer-title {
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

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

.footer-list a {
  font-size: 13.5px;
  color: #A7B2C6;
}

.footer-list a:hover {
  color: #FFFFFF;
}

.footer-note {
  font-size: 13px;
  line-height: 1.7;
  color: #8E9AB0;
}

.footer-copy {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 16px 24px 30px;
  font-size: 12.5px;
  color: #7C879C;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

/* --------------------------------------------------------------------------
   3. components —— 通用组件：按钮、标签、卡片、列表、步骤、FAQ
   -------------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  line-height: 1.2;
}

.btn-primary {
  background-color: var(--red);
  color: #FFFFFF;
}

.btn-primary:hover {
  background-color: var(--red-deep);
  color: #FFFFFF;
}

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

.btn-ghost:hover {
  border-color: var(--ink);
  background-color: var(--cover);
  color: var(--ink);
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.section-head h2 {
  font-size: 22px;
}

.section-desc,
.section-intro,
.section-lead {
  margin: 0 0 18px;
  font-size: 15px;
  color: var(--slate);
  max-width: 820px;
}

.section-more {
  font-size: 14px;
  color: var(--red);
  font-weight: 600;
  white-space: nowrap;
}

.section-more:hover {
  color: var(--red-deep);
}

/* 题材标签 */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag {
  display: inline-block;
  padding: 7px 14px;
  border-radius: 999px;
  background-color: var(--paper-card);
  border: 1px solid var(--line);
  font-size: 14px;
  color: var(--ink-soft);
}

.tag:hover {
  background-color: var(--ink);
  border-color: var(--ink);
  color: #FFFFFF;
}

.tag-sm {
  font-size: 12.5px;
  padding: 4px 10px;
}

/* 封面图容器统一约束 */
.hero-figure,
.topic-figure,
.category-figure,
.rank-cover,
.topic-cover,
.cover-figure,
.media-figure,
.aside-figure,
.guide-figure {
  overflow: hidden;
  border-radius: var(--radius);
  background-color: var(--cover);
}

.hero-figure img,
.topic-figure img,
.category-figure img,
.rank-cover img,
.topic-cover img,
.cover-figure img,
.media-figure img,
.aside-figure img,
.guide-figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.topic-figure {
  aspect-ratio: 3 / 4;
}

.category-figure {
  aspect-ratio: 4 / 3;
}

.rank-cover {
  width: 54px;
  height: 72px;
  flex: 0 0 auto;
}

.topic-cover {
  aspect-ratio: 3 / 4;
}

.cover-figure {
  aspect-ratio: 3 / 4;
}

.media-figure,
.guide-figure,
.aside-figure {
  aspect-ratio: 16 / 9;
}

.update-thumb {
  width: 68px;
  height: 90px;
  flex: 0 0 auto;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background-color: var(--cover);
}

.rank-thumb {
  width: 40px;
  height: 52px;
  flex: 0 0 auto;
  object-fit: cover;
  border-radius: 3px;
  background-color: var(--cover);
}

figcaption {
  font-size: 13px;
  color: var(--slate);
  padding: 8px 2px 0;
}

/* 步骤条 */
.path-steps {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.path-step {
  position: relative;
  padding-left: 40px;
  min-height: 32px;
}

.step-index,
.path-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: var(--ink);
  color: #FFFFFF;
  font-size: 13px;
  font-weight: 700;
  font-family: var(--sans);
}

.path-step .path-index,
.path-step .step-index {
  position: absolute;
  left: 0;
  top: 2px;
}

.path-text,
.step-text {
  font-size: 14.5px;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

.path-link,
.step-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--red);
}

.path-link:hover,
.step-link:hover {
  color: var(--red-deep);
}

/* FAQ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.faq-item {
  background-color: var(--paper-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 18px;
}

.faq-question {
  cursor: pointer;
  list-style: none;
  padding: 15px 26px 15px 0;
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  position: relative;
}

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

.faq-question::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--red);
  line-height: 1;
}

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

.faq-answer {
  padding: 0 0 16px;
  font-size: 15px;
  color: var(--ink-soft);
}

/* 侧栏通用块 */
.side-block,
.aside-block,
.aside-card {
  background-color: var(--paper-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}

.side-block h2,
.aside-block h2,
.aside-card h2,
.aside-title {
  font-size: 17px;
  margin-bottom: 12px;
}

.aside-note,
.aside-text,
.side-text {
  font-size: 14.5px;
  color: var(--ink-soft);
  margin-bottom: 10px;
}

.side-link-list,
.aside-links,
.aside-link-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.side-link-list a,
.aside-links a,
.aside-link-list a {
  font-size: 14.5px;
  color: var(--ink-soft);
  font-weight: 600;
}

.side-link-list a:hover,
.aside-links a:hover,
.aside-link-list a:hover {
  color: var(--red);
}

.aside-link-card {
  display: block;
  padding: 12px 14px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background-color: var(--paper);
}

.aside-link-card:hover {
  border-color: var(--red);
}

.aside-link-title {
  display: block;
  font-size: 14.5px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 4px;
}

.aside-link-desc {
  display: block;
  font-size: 13px;
  color: var(--slate);
}

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

.aside-points li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  color: var(--ink-soft);
}

.aside-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--red);
}

/* 通用更新条目（首页与更新页共用） */
.update-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.update-item {
  display: flex;
  gap: 14px;
  padding: 12px;
  background-color: var(--paper-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.update-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.update-body {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.update-title,
.update-name {
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.update-title a,
.update-name a {
  color: var(--ink);
}

.update-title a:hover,
.update-name a:hover {
  color: var(--red);
}

.update-meta,
.update-tags,
.update-date {
  font-size: 13px;
  color: var(--slate);
}

.update-desc,
.update-note {
  font-size: 14px;
  color: var(--ink-soft);
}

/* 关联链接条 */
.related-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 34px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.related-links-label {
  font-size: 13px;
  color: var(--slate);
  font-weight: 600;
}

.related-links-item {
  font-size: 14px;
  color: var(--ink-soft);
}

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

/* --------------------------------------------------------------------------
   4. pages —— 各页面专属模块
   -------------------------------------------------------------------------- */

/* --- 首页 --- */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: 36px;
  align-items: start;
  margin-bottom: 44px;
}

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

.hero-eyebrow {
  margin: 18px 0 8px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--red);
  font-weight: 600;
}

.hero-lead {
  margin: 14px 0 20px;
  font-size: 16.5px;
  color: var(--ink-soft);
  max-width: 620px;
}

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

.hero-paths {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.path-card {
  background-color: var(--paper-card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--red);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.path-title {
  font-size: 17px;
  margin-bottom: 6px;
}

.path-desc {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 10px;
}

.topic-tags {
  margin-bottom: 44px;
}

.home-digest {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: 36px;
  align-items: start;
  margin-bottom: 44px;
}

.recent-updates,
.ranking-preview {
  min-width: 0;
}

.rank-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.rank-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  background-color: var(--paper-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.rank-no {
  width: 26px;
  height: 26px;
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background-color: var(--cover);
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
}

.rank-no-1 {
  background-color: var(--red);
  color: #FFFFFF;
}

.rank-no-2 {
  background-color: var(--ink);
  color: #FFFFFF;
}

.rank-no-3 {
  background-color: var(--teal);
  color: #FFFFFF;
}

.rank-body {
  min-width: 0;
}

.rank-title {
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.rank-title a {
  color: var(--ink);
}

.rank-title a:hover {
  color: var(--red);
}

.rank-meta {
  font-size: 12.5px;
  color: var(--slate);
}

.featured-topics {
  margin-bottom: 44px;
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.topic-card {
  background-color: var(--paper-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

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

.topic-issue {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--teal);
}

.topic-title {
  font-size: 17px;
}

.topic-desc {
  font-size: 14px;
  color: var(--ink-soft);
  flex: 1 1 auto;
}

.topic-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--red);
}

.topic-link:hover {
  color: var(--red-deep);
}

.reading-note {
  background-color: var(--cover);
  border-radius: var(--radius);
  padding: 26px 28px;
  margin-bottom: 8px;
}

.reading-note .section-head {
  border-bottom-color: rgba(27, 36, 64, 0.12);
}

.note-body p {
  font-size: 15px;
  color: var(--ink-soft);
  max-width: 860px;
}

.note-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

/* --- 题材分类页 --- */

.category-overview {
  margin-bottom: 40px;
}

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

.category-card {
  background-color: var(--paper-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  scroll-margin-top: 90px;
}

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

.category-name {
  font-size: 17px;
}

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

.category-tags {
  font-size: 13px;
  color: var(--slate);
}

.category-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--red);
  margin-top: auto;
}

.category-link:hover {
  color: var(--red-deep);
}

.category-explain {
  margin-bottom: 8px;
}

.explain-item {
  padding: 16px 0;
  border-top: 1px solid var(--line-soft);
}

.explain-item h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.explain-item p {
  font-size: 14.5px;
  color: var(--ink-soft);
}

.reading-path .path-steps {
  gap: 16px;
}

.related-entry {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.entry-card {
  display: block;
  padding: 14px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background-color: var(--paper);
}

.entry-card:hover {
  border-color: var(--red);
}

.entry-name {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 4px;
}

.entry-desc {
  display: block;
  font-size: 13px;
  color: var(--slate);
}

/* --- 更新追踪页 --- */

.timeline-section,
.updates-note-section,
.updates-topic-section {
  margin-bottom: 40px;
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.timeline-group {
  position: relative;
  padding-left: 20px;
  border-left: 2px solid var(--line);
}

.timeline-date {
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 14px;
  position: relative;
}

.timeline-date::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 50%;
  transform: translateY(-50%);
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--red);
}

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

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

.note-card-title {
  font-size: 16px;
  margin-bottom: 8px;
}

.note-card p {
  font-size: 14.5px;
  color: var(--ink-soft);
}

.topic-link-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.topic-link-item {
  background-color: var(--paper-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}

.topic-link-title {
  font-size: 16px;
  margin-bottom: 6px;
}

.topic-link-title a {
  color: var(--ink);
}

.topic-link-title a:hover {
  color: var(--red);
}

.topic-link-item p {
  font-size: 14px;
  color: var(--ink-soft);
}

/* --- 人气榜单页 --- */

.section {
  margin-bottom: 40px;
}

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

.dimension-card {
  background-color: var(--paper-card);
  border: 1px solid var(--line);
  border-top: 3px solid var(--teal);
  border-radius: var(--radius);
  padding: 18px;
}

.dimension-card h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

.dimension-card p {
  font-size: 14.5px;
  color: var(--ink-soft);
}

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

.ranking-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  background-color: var(--paper-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

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

.rank-index {
  width: 30px;
  flex: 0 0 auto;
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--red);
  text-align: center;
}

.ranking-item .rank-body {
  flex: 1 1 auto;
}

.rank-note {
  font-size: 13.5px;
  color: var(--slate);
  margin-top: 4px;
}

.rank-tags {
  font-size: 13px;
  color: var(--teal);
  font-weight: 600;
}

.rank-link {
  flex: 0 0 auto;
  font-size: 14px;
  font-weight: 600;
  color: var(--red);
}

.rank-link:hover {
  color: var(--red-deep);
}

.distribution-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.distribution-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--line-soft);
  font-size: 14px;
}

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

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

.distribution-list a:hover {
  color: var(--red);
}

.distribution-list span {
  color: var(--slate);
  font-size: 13px;
}

.usage-steps {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.usage-steps li {
  position: relative;
  padding-left: 38px;
}

.usage-steps .step-index {
  position: absolute;
  left: 0;
  top: 2px;
}

.usage-steps p {
  font-size: 14px;
  color: var(--ink-soft);
}

/* --- 专题书单页 --- */

.topic-summary {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 30px;
  align-items: start;
  background-color: var(--paper-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 44px;
}

.topic-summary-visual {
  min-width: 0;
}

.topic-summary-body {
  min-width: 0;
}

.topic-summary-title {
  font-size: 24px;
  margin: 8px 0 12px;
}

.topic-summary-body > p {
  font-size: 15px;
  color: var(--ink-soft);
}

.topic-tag-list,
.related-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.topic-tag {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background-color: var(--cover);
  font-size: 13.5px;
  color: var(--ink);
}

.topic-tag:hover {
  background-color: var(--ink);
  color: #FFFFFF;
}

.topic-chapters {
  margin-bottom: 44px;
}

.topic-chapter {
  padding: 26px 0;
  border-top: 1px solid var(--line);
}

.topic-chapter:first-of-type {
  border-top: 0;
}

.chapter-head {
  margin-bottom: 14px;
}

.chapter-index {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--red);
  margin-bottom: 4px;
}

.chapter-head h3 {
  font-size: 20px;
}

.topic-chapter > p {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 18px;
  max-width: 860px;
}

.chapter-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.cover-card a {
  display: block;
  color: inherit;
}

.cover-card a:hover .cover-title {
  color: var(--red);
}

.cover-card .cover-figure {
  margin-bottom: 10px;
}

.cover-title {
  font-family: var(--serif);
  font-size: 15.5px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 4px;
}

.cover-meta {
  font-size: 13px;
  color: var(--slate);
}

.reading-order {
  margin-bottom: 44px;
}

.reading-order .path-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.reading-order .path-step {
  padding: 18px 18px 18px 56px;
  background-color: var(--paper-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.reading-order .step-index {
  left: 18px;
  top: 18px;
}

.reading-order .path-step h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.reading-order .path-step p {
  font-size: 14px;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

.topic-related {
  margin-bottom: 8px;
}

.related-note {
  margin-top: 18px;
  font-size: 14.5px;
  color: var(--slate);
}

.related-note a {
  color: var(--red);
  font-weight: 600;
}

/* --- 阅读须知页 --- */

.guide-path,
.guide-columns,
.guide-tags,
.guide-faq {
  margin-bottom: 40px;
}

.guide-path .path-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}

.guide-path .path-step {
  padding: 18px 18px 18px 56px;
  background-color: var(--paper-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.guide-path .step-index {
  left: 18px;
  top: 18px;
}

.guide-path .step-title {
  font-size: 16px;
  margin-bottom: 6px;
}

.column-usage {
  display: grid;
  grid-template-columns: minmax(160px, 220px) minmax(0, 1fr);
  gap: 10px 24px;
  align-items: baseline;
}

.usage-name {
  font-family: var(--serif);
  font-size: 15.5px;
  font-weight: 700;
  padding: 12px 0;
  border-top: 1px solid var(--line-soft);
}

.usage-name a {
  color: var(--ink);
}

.usage-name a:hover {
  color: var(--red);
}

.usage-desc {
  font-size: 14.5px;
  color: var(--ink-soft);
  padding: 12px 0;
  border-top: 1px solid var(--line-soft);
}

.tag-explain-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.tag-explain-item {
  background-color: var(--paper-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
}

.tag-chip {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  background-color: var(--cover);
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
}

.tag-chip:hover {
  background-color: var(--ink);
  color: #FFFFFF;
}

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

.side-boundary .side-text,
.side-feedback .side-text {
  font-size: 14.5px;
  color: var(--ink-soft);
  margin-bottom: 10px;
}

.side-more .side-link-list a {
  font-weight: 600;
}

/* --- 版权与反馈页 --- */

.content-block {
  margin-bottom: 40px;
}

.content-block h2 {
  font-size: 22px;
  margin-bottom: 12px;
}

.content-block > p {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 12px;
}

.statement-block .media-figure {
  margin: 16px 0;
}

.copyright-list,
.feedback-scope-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 16px;
}

.copyright-list li,
.feedback-scope-list li {
  padding-left: 16px;
  border-left: 3px solid var(--cover);
}

.copyright-list h3,
.feedback-scope-list h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.copyright-list p,
.feedback-scope-list p {
  font-size: 14.5px;
  color: var(--ink-soft);
}

.feedback-note {
  margin-top: 18px;
  padding: 14px 16px;
  background-color: var(--cover);
  border-radius: var(--radius);
  font-size: 14.5px;
  color: var(--ink-soft);
}

.process-steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.process-step {
  position: relative;
  padding-left: 40px;
}

.process-step .step-index {
  position: absolute;
  left: 0;
  top: 2px;
}

.process-step h3 {
  font-size: 15.5px;
  margin-bottom: 4px;
}

.process-step p {
  font-size: 14px;
  color: var(--ink-soft);
}

/* --- 使用条款页 --- */

.terms-block {
  margin-bottom: 40px;
}

.terms-block h2 {
  font-size: 22px;
  margin-bottom: 12px;
}

.terms-block > p {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 14px;
}

.terms-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  counter-reset: terms;
}

.terms-list li {
  position: relative;
  padding-left: 42px;
  counter-increment: terms;
}

.terms-list li::before {
  content: counter(terms);
  position: absolute;
  left: 0;
  top: 2px;
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background-color: var(--ink);
  color: #FFFFFF;
  font-size: 13px;
  font-weight: 700;
}

.terms-list h3,
.terms-points h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.terms-list p,
.terms-points p {
  font-size: 14.5px;
  color: var(--ink-soft);
}

.terms-points {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.terms-points li {
  padding-left: 16px;
  border-left: 3px solid var(--cover);
}

.aside-boundary .aside-points {
  margin-top: 4px;
}

/* --- 404 --- */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 24px 80px;
}

.error-block {
  max-width: 620px;
  text-align: center;
}

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

.error-block h1 {
  font-size: clamp(26px, 3.4vw, 34px);
  margin-bottom: 14px;
}

.error-text {
  font-size: 16px;
  color: var(--ink-soft);
  margin-bottom: 26px;
}

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

/* --------------------------------------------------------------------------
   5. responsive —— 断点 1024 / 768 / 420
   -------------------------------------------------------------------------- */

@media (max-width: 1024px) {
  .footer-inner {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
    gap: 28px;
  }

  .home-digest {
    grid-template-columns: minmax(0, 1fr) minmax(0, 300px);
    gap: 28px;
  }

  .page-layout {
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 30px;
  }
}

@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
    padding: 0 16px;
    min-height: 60px;
    gap: 12px;
  }

  .nav-toggle {
    display: flex;
    margin-left: auto;
  }

  .site-nav {
    order: 3;
    flex: 1 1 100%;
    margin-left: 0;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px 0 12px;
    border-top: 1px solid var(--line);
  }

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

  .nav-list li {
    width: 100%;
  }

  .nav-list a {
    display: block;
    padding: 12px 10px;
    font-size: 16px;
    border-radius: var(--radius-sm);
  }

  .inner-main,
  .home-main {
    padding: 18px 16px 48px;
  }

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

  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 26px;
    margin-bottom: 34px;
  }

  .home-digest {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
    margin-bottom: 34px;
  }

  .topic-grid,
  .category-grid,
  .note-grid,
  .topic-link-list,
  .dimension-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .topic-summary {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
    padding: 20px;
  }

  .topic-summary-visual {
    max-width: 220px;
  }

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

  .usage-name {
    padding-bottom: 0;
  }

  .usage-desc {
    padding-top: 4px;
  }

  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding: 34px 16px 20px;
    gap: 24px;
  }

  .footer-copy {
    padding: 14px 16px 26px;
  }

  .guide-path .path-steps,
  .reading-order .path-steps {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 480px) {
  .topic-grid,
  .category-grid,
  .note-grid,
  .topic-link-list,
  .dimension-grid,
  .tag-explain-list,
  .chapter-cards {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-actions,
  .note-actions,
  .error-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

  .update-item {
    flex-direction: column;
  }

  .update-thumb {
    width: 100%;
    height: 170px;
  }

  .ranking-item {
    flex-wrap: wrap;
  }

  .rank-link {
    width: 100%;
    padding-left: 44px;
  }

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