/* ============================================================
   base — 全局基础样式
   ============================================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: #2B2B2B;
  background-color: #F6F4EE;
}

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

a {
  color: #1F6F5C;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #174f41;
}

ul,
ol {
  list-style: none;
}

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

.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 — 全站统一骨架
   ============================================================ */

.site-header {
  background-color: #F6F4EE;
  border-bottom: 1px solid #D8D2C2;
  position: relative;
  z-index: 100;
}

.header-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 24px;
}

.brand-name {
  font-size: 22px;
  font-weight: 700;
  color: #2B2B2B;
  white-space: nowrap;
}

.brand-name a {
  color: inherit;
}

.brand-name a:hover {
  color: #1F6F5C;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  align-items: center;
}

.nav-toggle-line {
  display: block;
  width: 22px;
  height: 2px;
  background-color: #2B2B2B;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-nav {
  display: flex;
  align-items: center;
}

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

.nav-list li a {
  display: block;
  padding: 10px 16px;
  font-size: 15px;
  color: #2B2B2B;
  border-radius: 6px;
  line-height: 1.5;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.nav-list li a:hover {
  color: #1F6F5C;
  background-color: rgba(31, 111, 92, 0.06);
}

.nav-list li a.is-current {
  color: #1F6F5C;
  font-weight: 600;
  background-color: rgba(31, 111, 92, 0.1);
}

.site-main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 内页统一主容器 */
.inner-main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 40px 24px 64px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: #6b6b6b;
  margin-bottom: 28px;
  line-height: 1.6;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: #1F6F5C;
}

.breadcrumb a:hover {
  color: #174f41;
}

.breadcrumb-sep {
  color: #b0aa9c;
  font-size: 12px;
}

.breadcrumb-current {
  color: #6b6b6b;
}

/* 页面标题区 */
.page-header {
  margin-bottom: 36px;
}

.page-title {
  font-size: 30px;
  font-weight: 700;
  color: #2B2B2B;
  line-height: 1.4;
  margin-bottom: 12px;
}

.page-description {
  font-size: 16px;
  color: #5c5c5c;
  max-width: 720px;
  line-height: 1.75;
}

/* 页脚 */
.site-footer {
  background-color: #2B2B2B;
  color: #cfcfcf;
  margin-top: 40px;
}

.footer-columns {
  max-width: 1180px;
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
}

.footer-brand-name {
  font-size: 20px;
  font-weight: 700;
  color: #F6F4EE;
  margin-bottom: 10px;
}

.footer-brand p:last-child {
  font-size: 14px;
  line-height: 1.7;
  color: #a8a8a8;
}

.footer-col-title {
  font-size: 14px;
  font-weight: 600;
  color: #F6F4EE;
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

.footer-col ul li a {
  display: inline-block;
  padding: 4px 0;
  font-size: 14px;
  color: #c5c5c5;
  line-height: 1.7;
}

.footer-col ul li a:hover {
  color: #F6F4EE;
}

.footer-copyright {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  padding: 16px 24px;
  font-size: 13px;
  color: #8f8f8f;
  max-width: 1180px;
  margin: 0 auto;
}

/* ============================================================
   components — 全站通用组件
   ============================================================ */

/* 章节标题（带编号） */
.section-title {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 22px;
  font-weight: 700;
  color: #2B2B2B;
  line-height: 1.5;
  margin-bottom: 16px;
}

.section-no {
  font-size: 16px;
  font-weight: 700;
  color: #1F6F5C;
  font-style: normal;
}

.section-intro {
  font-size: 15px;
  color: #5c5c5c;
  line-height: 1.75;
  margin-bottom: 20px;
  max-width: 720px;
}

.section-more {
  margin-top: 12px;
  font-size: 15px;
}

.section-more a {
  color: #1F6F5C;
  font-weight: 500;
}

.section-more a:hover {
  color: #174f41;
  text-decoration: underline;
}

/* 相关链接区 */
.related-links {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid #D8D2C2;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.related-links-label {
  font-size: 14px;
  color: #6b6b6b;
  margin-right: 8px;
}

.related-links-item {
  display: inline-block;
  padding: 6px 14px;
  font-size: 14px;
  color: #1F6F5C;
  background-color: rgba(31, 111, 92, 0.06);
  border-radius: 6px;
  line-height: 1.6;
  min-height: 36px;
}

.related-links-item:hover {
  background-color: rgba(31, 111, 92, 0.12);
  color: #174f41;
}

/* 图片容器统一 */
figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ============================================================
   pages — index.html 首页
   ============================================================ */

.home-main {
  padding: 0 24px 64px;
}

/* 首页扩展路标条 */
.home-route-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 24px;
  border-bottom: 1px solid #D8D2C2;
  padding: 14px 0;
  margin-bottom: 36px;
}

.home-route-strip a {
  font-size: 14px;
  color: #6b6b6b;
  padding: 4px 0;
  line-height: 1.6;
  position: relative;
}

.home-route-strip a:hover {
  color: #1F6F5C;
}

/* 首屏总览区 */
.hero-overview {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 56px;
}

.hero-copy h1 {
  font-size: 34px;
  font-weight: 700;
  color: #2B2B2B;
  line-height: 1.4;
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 16px;
  color: #5c5c5c;
  line-height: 1.8;
  margin-bottom: 28px;
  max-width: 520px;
}

.hero-entries {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  max-width: 520px;
}

.hero-entries a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  font-size: 15px;
  color: #2B2B2B;
  background-color: #fff;
  border: 1px solid #D8D2C2;
  border-radius: 6px;
  min-height: 48px;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.hero-entries a::after {
  content: "→";
  color: #1F6F5C;
  font-size: 14px;
  margin-left: 8px;
}

.hero-entries a:hover {
  border-color: #1F6F5C;
  color: #1F6F5C;
}

.hero-figure {
  margin: 0;
}

.hero-figure img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  border: 1px solid #D8D2C2;
}

/* 阅读路线引导段 */
.route-guide {
  padding: 36px 0;
  border-top: 1px solid #D8D2C2;
  margin-bottom: 8px;
}

.route-guide p {
  max-width: 720px;
  font-size: 16px;
  line-height: 1.8;
  color: #3a3a3a;
}

/* 题材图文交替区 */
.reading-rows {
  padding: 36px 0;
  border-top: 1px solid #D8D2C2;
}

.reading-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 28px 0;
}

.row-text h3 {
  font-size: 20px;
  font-weight: 600;
  color: #2B2B2B;
  margin-bottom: 12px;
  line-height: 1.5;
}

.row-text p {
  font-size: 15px;
  color: #4a4a4a;
  line-height: 1.8;
}

.row-figure {
  margin: 0;
}

.row-figure img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  border: 1px solid #D8D2C2;
}

/* 章节式更新列表 */
.update-list {
  padding: 36px 0;
  border-top: 1px solid #D8D2C2;
}

.chapter-list {
  display: flex;
  flex-direction: column;
}

.chapter-item {
  display: flex;
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid #e5e0d4;
  align-items: flex-start;
}

.chapter-item:last-child {
  border-bottom: none;
}

.chapter-no {
  font-size: 14px;
  font-weight: 700;
  color: #B3663A;
  min-width: 32px;
  line-height: 1.6;
  padding-top: 2px;
}

.chapter-content h3 {
  font-size: 17px;
  font-weight: 600;
  color: #2B2B2B;
  line-height: 1.5;
  margin-bottom: 4px;
}

.chapter-content p {
  font-size: 14px;
  color: #5c5c5c;
  line-height: 1.7;
  max-width: 640px;
}

/* 阅读趋势提示 */
.trend-note {
  padding: 36px 0;
  border-top: 1px solid #D8D2C2;
}

.trend-note p {
  font-size: 15px;
  color: #3a3a3a;
  line-height: 1.8;
  max-width: 720px;
}

.trend-note p a {
  font-weight: 500;
}

/* 编辑手记预览 */
.editor-note {
  padding: 36px 0;
  border-top: 1px solid #D8D2C2;
}

.editor-note blockquote {
  margin: 8px 0 16px;
  padding: 20px 24px;
  background-color: #fff;
  border-left: 3px solid #1F6F5C;
  border-radius: 0 6px 6px 0;
}

.editor-note blockquote p {
  font-size: 15px;
  color: #4a4a4a;
  line-height: 1.8;
  font-style: normal;
}

/* 版权边界提示行 */
.boundary-tip {
  margin: 24px 0 0;
  padding: 16px 20px;
  background-color: #eae6dc;
  border-radius: 6px;
}

.boundary-tip p {
  font-size: 14px;
  color: #5c5c5c;
  line-height: 1.7;
}

/* ============================================================
   pages — 内页通用
   ============================================================ */

/* ============================================================
   pages — ticai.html 题材分类
   ============================================================ */

.genre-axis-section {
  margin-bottom: 48px;
}

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

.genre-axis-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 12px 0;
  border-bottom: 1px solid #e5e0d4;
}

.genre-axis-item:last-child {
  border-bottom: none;
}

.genre-tag {
  min-width: 88px;
  font-size: 15px;
  font-weight: 600;
  color: #1F6F5C;
  padding: 2px 0;
  line-height: 1.6;
}

.genre-axis-item p {
  font-size: 15px;
  color: #4a4a4a;
  line-height: 1.7;
  max-width: 720px;
}

.genre-visual-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 32px 0;
  border-top: 1px solid #D8D2C2;
  border-bottom: 1px solid #D8D2C2;
  margin-bottom: 40px;
}

.genre-visual-media {
  margin: 0;
}

.genre-visual-media .media-figure {
  margin: 0;
}

.genre-visual-media .media-figure img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  border: 1px solid #D8D2C2;
}

.genre-visual-text h2 {
  font-size: 22px;
  font-weight: 700;
  color: #2B2B2B;
  margin-bottom: 14px;
  line-height: 1.5;
}

.genre-visual-text p {
  font-size: 15px;
  color: #4a4a4a;
  line-height: 1.8;
}

.genre-detail-section {
  margin-bottom: 48px;
}

.genre-detail-block {
  padding: 20px 0;
  border-bottom: 1px solid #e5e0d4;
}

.genre-detail-block:last-child {
  border-bottom: none;
}

.genre-detail-block h3 {
  font-size: 18px;
  font-weight: 600;
  color: #2B2B2B;
  margin-bottom: 10px;
  line-height: 1.5;
}

.genre-detail-block p {
  font-size: 15px;
  color: #4a4a4a;
  line-height: 1.8;
  max-width: 760px;
}

.genre-table-section {
  margin-bottom: 48px;
}

.table-scroll {
  overflow-x: auto;
  border: 1px solid #D8D2C2;
  border-radius: 6px;
  background-color: #fff;
}

.genre-match-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 480px;
}

.genre-match-table th {
  background-color: #f0ece2;
  color: #2B2B2B;
  font-weight: 600;
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid #D8D2C2;
  line-height: 1.6;
}

.genre-match-table td {
  padding: 12px 16px;
  border-bottom: 1px solid #e5e0d4;
  color: #4a4a4a;
  line-height: 1.7;
  vertical-align: top;
}

.genre-match-table tr:last-child td {
  border-bottom: none;
}

.genre-trend-entry {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
  padding: 32px 0;
  border-top: 1px solid #D8D2C2;
  margin-bottom: 8px;
}

.genre-trend-text h2 {
  font-size: 22px;
  font-weight: 700;
  color: #2B2B2B;
  margin-bottom: 14px;
  line-height: 1.5;
}

.genre-trend-text p {
  font-size: 15px;
  color: #4a4a4a;
  line-height: 1.8;
  margin-bottom: 10px;
}

.genre-trend-text p:last-child {
  margin-bottom: 0;
}

.genre-trend-media {
  margin: 0;
}

.genre-trend-media .media-figure {
  margin: 0;
}

.genre-trend-media .media-figure img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  border: 1px solid #D8D2C2;
}

/* ============================================================
   pages — qushi.html 阅读趋势
   ============================================================ */

.trend-main-list {
  margin-bottom: 48px;
}

.trend-item {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid #e5e0d4;
  align-items: flex-start;
}

.trend-item:last-child {
  border-bottom: none;
}

.trend-item-index {
  font-size: 15px;
  font-weight: 700;
  color: #B3663A;
  min-width: 36px;
  line-height: 1.6;
  padding-top: 2px;
}

.trend-item-content h3 {
  font-size: 18px;
  font-weight: 600;
  color: #2B2B2B;
  margin-bottom: 8px;
  line-height: 1.5;
}

.trend-item-content p {
  font-size: 15px;
  color: #4a4a4a;
  line-height: 1.8;
  max-width: 720px;
}

.trend-item-content p strong {
  color: #1F6F5C;
  font-weight: 600;
}

.trend-and-category {
  margin-bottom: 48px;
}

.trend-media-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 24px 0;
}

.trend-figure {
  margin: 0;
}

.trend-figure img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  border: 1px solid #D8D2C2;
}

.trend-figure figcaption {
  font-size: 13px;
  color: #8a8a8a;
  text-align: center;
  padding: 8px 0 0;
  line-height: 1.6;
}

.trend-map-text p {
  font-size: 15px;
  color: #4a4a4a;
  line-height: 1.8;
  margin-bottom: 12px;
}

.trend-map-text p:last-child {
  margin-bottom: 0;
}

.trend-editorial-note {
  padding: 24px 0;
  border-top: 1px solid #D8D2C2;
}

.trend-editorial-note p {
  font-size: 15px;
  color: #4a4a4a;
  line-height: 1.8;
  max-width: 760px;
}

.trend-editorial-note p a {
  font-weight: 500;
}

/* ============================================================
   pages — gengxin.html 更新动态
   ============================================================ */

.update-log-section {
  margin-bottom: 48px;
}

.update-entry-list {
  display: flex;
  flex-direction: column;
}

.update-entry {
  padding: 20px 0;
  border-bottom: 1px solid #e5e0d4;
}

.update-entry:last-child {
  border-bottom: none;
}

.entry-version {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: #1F6F5C;
  background-color: rgba(31, 111, 92, 0.08);
  padding: 2px 10px;
  border-radius: 4px;
  margin-bottom: 8px;
  line-height: 1.6;
}

.update-entry h3 {
  font-size: 18px;
  font-weight: 600;
  color: #2B2B2B;
  margin-bottom: 8px;
  line-height: 1.5;
}

.update-entry p {
  font-size: 15px;
  color: #4a4a4a;
  line-height: 1.8;
  max-width: 760px;
}

.update-scope-section {
  margin-bottom: 48px;
}

.scope-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  margin-bottom: 24px;
}

.scope-text p {
  font-size: 15px;
  color: #4a4a4a;
  line-height: 1.8;
}

.scope-figure {
  margin: 0;
}

.scope-figure img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  border: 1px solid #D8D2C2;
}

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

.scope-item {
  padding: 20px;
  background-color: #fff;
  border: 1px solid #D8D2C2;
  border-radius: 6px;
}

.scope-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: #1F6F5C;
  margin-bottom: 8px;
  line-height: 1.5;
}

.scope-item p {
  font-size: 14px;
  color: #4a4a4a;
  line-height: 1.7;
}

.maintenance-direction-section {
  margin-bottom: 48px;
  padding: 24px 0;
  border-top: 1px solid #D8D2C2;
}

.maintenance-direction-section p {
  font-size: 15px;
  color: #4a4a4a;
  line-height: 1.8;
  max-width: 760px;
}

.inner-nav-section {
  margin-bottom: 24px;
}

.inner-nav-section p {
  font-size: 15px;
  color: #4a4a4a;
  line-height: 1.8;
  margin-bottom: 16px;
}

.inner-nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.inner-nav-list li a {
  display: inline-block;
  padding: 8px 16px;
  font-size: 14px;
  color: #1F6F5C;
  background-color: rgba(31, 111, 92, 0.06);
  border-radius: 6px;
  min-height: 40px;
  line-height: 1.6;
}

.inner-nav-list li a:hover {
  background-color: rgba(31, 111, 92, 0.12);
}

/* ============================================================
   pages — zhinan.html 阅读指南
   ============================================================ */

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

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

.step-item {
  padding: 24px;
  background-color: #fff;
  border: 1px solid #D8D2C2;
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.step-number {
  font-size: 15px;
  font-weight: 700;
  color: #B3663A;
  line-height: 1.4;
}

.step-text h3 {
  font-size: 17px;
  font-weight: 600;
  color: #2B2B2B;
  margin-bottom: 8px;
  line-height: 1.5;
}

.step-text p {
  font-size: 14px;
  color: #4a4a4a;
  line-height: 1.75;
}

.guide-figure {
  margin: 0 0 20px;
}

.guide-figure img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  border: 1px solid #D8D2C2;
}

.guide-figure figcaption {
  font-size: 13px;
  color: #8a8a8a;
  text-align: center;
  padding: 8px 0 0;
  line-height: 1.6;
}

.media-note p {
  font-size: 15px;
  color: #4a4a4a;
  line-height: 1.8;
}

.media-note p a {
  font-weight: 500;
}

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

.faq-item {
  border: 1px solid #D8D2C2;
  border-radius: 6px;
  background-color: #fff;
  overflow: hidden;
}

.faq-item summary {
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  color: #2B2B2B;
  cursor: pointer;
  line-height: 1.6;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

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

.faq-item summary::after {
  content: "+";
  font-size: 18px;
  color: #1F6F5C;
  flex-shrink: 0;
  line-height: 1;
}

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

.faq-item[open] summary {
  border-bottom: 1px solid #e5e0d4;
}

.faq-answer {
  padding: 16px 20px;
}

.faq-answer p {
  font-size: 15px;
  color: #4a4a4a;
  line-height: 1.8;
  max-width: 720px;
}

.local-state-content {
  padding: 20px;
  background-color: #fff;
  border: 1px solid #D8D2C2;
  border-radius: 6px;
}

.local-state-content p {
  font-size: 15px;
  color: #4a4a4a;
  line-height: 1.8;
  margin-bottom: 12px;
}

.local-state-content p:last-of-type {
  margin-bottom: 16px;
}

.state-clear-btn {
  display: inline-block;
  padding: 10px 20px;
  font-size: 14px;
  color: #1F6F5C;
  background-color: rgba(31, 111, 92, 0.08);
  border: 1px solid rgba(31, 111, 92, 0.3);
  border-radius: 6px;
  min-height: 44px;
  line-height: 1.6;
  transition: background-color 0.2s ease;
}

.state-clear-btn:hover {
  background-color: rgba(31, 111, 92, 0.16);
}

.related-links-section ul.related-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.related-links-section ul.related-links li a {
  display: inline-block;
  padding: 8px 16px;
  font-size: 14px;
  color: #1F6F5C;
  background-color: rgba(31, 111, 92, 0.06);
  border-radius: 6px;
  min-height: 40px;
  line-height: 1.6;
}

.related-links-section ul.related-links li a:hover {
  background-color: rgba(31, 111, 92, 0.12);
}

/* ============================================================
   pages — shouji.html 编辑手记
   ============================================================ */

.article-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.note-article {
  max-width: 760px;
}

.note-section {
  margin-bottom: 36px;
}

.note-section p {
  font-size: 16px;
  color: #3a3a3a;
  line-height: 1.85;
  margin-bottom: 16px;
}

.note-section p:last-child {
  margin-bottom: 0;
}

.note-section p + p {
  margin-top: 16px;
}

.note-figure {
  margin: 24px 0;
}

.note-figure img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  border: 1px solid #D8D2C2;
}

.note-figure figcaption {
  font-size: 13px;
  color: #8a8a8a;
  text-align: center;
  padding: 8px 0 0;
  line-height: 1.6;
}

.method-section {
  margin-bottom: 8px;
}

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

.method-list li {
  padding: 20px;
  background-color: #fff;
  border: 1px solid #D8D2C2;
  border-radius: 6px;
}

.method-list li h3 {
  font-size: 16px;
  font-weight: 600;
  color: #1F6F5C;
  margin-bottom: 8px;
  line-height: 1.5;
}

.method-list li p {
  font-size: 14px;
  color: #4a4a4a;
  line-height: 1.75;
}

.related-links-title {
  font-size: 18px;
  font-weight: 600;
  color: #2B2B2B;
  margin-bottom: 14px;
  line-height: 1.5;
}

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

.related-list li a {
  display: block;
  padding: 10px 0;
  font-size: 15px;
  color: #1F6F5C;
  border-bottom: 1px solid #e5e0d4;
  line-height: 1.6;
}

.related-list li a:hover {
  color: #174f41;
}

/* ============================================================
   pages — banquan.html 版权与内容说明
   ============================================================ */

.content-section {
  margin-bottom: 40px;
  max-width: 760px;
}

.content-section h2 {
  font-size: 20px;
  font-weight: 700;
  color: #2B2B2B;
  margin-bottom: 12px;
  line-height: 1.5;
}

.content-section p {
  font-size: 15px;
  color: #4a4a4a;
  line-height: 1.8;
  margin-bottom: 12px;
}

.content-section p:last-child {
  margin-bottom: 0;
}

.content-section.media-section {
  display: block;
  max-width: 760px;
}

.content-figure {
  margin: 0 0 20px;
}

.content-figure img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  border: 1px solid #D8D2C2;
}

.content-figure figcaption {
  font-size: 13px;
  color: #8a8a8a;
  text-align: center;
  padding: 8px 0 0;
  line-height: 1.6;
}

.boundary-list,
.material-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 12px 0;
}

.boundary-list li,
.material-list li {
  padding: 12px 16px;
  background-color: #fff;
  border: 1px solid #D8D2C2;
  border-radius: 6px;
  font-size: 15px;
  color: #4a4a4a;
  line-height: 1.7;
}

.related-title {
  font-size: 15px;
  font-weight: 600;
  color: #2B2B2B;
  margin-right: 12px;
  margin-bottom: 4px;
  display: block;
}

/* ============================================================
   pages — 404.html
   ============================================================ */

.error-main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 80px 24px;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.error-section {
  text-align: center;
  max-width: 560px;
}

.error-code {
  font-size: 64px;
  font-weight: 700;
  color: #1F6F5C;
  line-height: 1.2;
  margin-bottom: 12px;
}

.error-section h1 {
  font-size: 24px;
  font-weight: 700;
  color: #2B2B2B;
  margin-bottom: 12px;
  line-height: 1.5;
}

.error-desc {
  font-size: 15px;
  color: #5c5c5c;
  line-height: 1.8;
  margin-bottom: 24px;
}

.back-home-link {
  display: inline-block;
  padding: 10px 24px;
  font-size: 15px;
  color: #fff;
  background-color: #1F6F5C;
  border-radius: 6px;
  min-height: 44px;
  line-height: 1.6;
}

.back-home-link:hover {
  background-color: #174f41;
  color: #fff;
}

/* ============================================================
   responsive — 920px 断点
   ============================================================ */

@media (max-width: 920px) {

  .header-inner {
    padding: 0 16px;
    min-height: 64px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: #F6F4EE;
    border-bottom: 1px solid #D8D2C2;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.06);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 8px 16px 16px;
    gap: 0;
  }

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

  .nav-list li a {
    padding: 12px 8px;
    border-radius: 6px;
    min-height: 44px;
    font-size: 16px;
  }

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

  .inner-main {
    padding: 32px 16px 48px;
  }

  .hero-overview {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .reading-row,
  .genre-visual-row,
  .genre-trend-entry,
  .trend-media-row,
  .scope-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .reading-row-right .row-figure {
    order: -1;
  }

  .steps-list,
  .scope-list,
  .method-list {
    grid-template-columns: 1fr 1fr;
  }

  .scope-item:last-child {
    grid-column: 1 / -1;
  }

  .footer-columns {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    padding: 40px 16px 28px;
  }

  .footer-col:first-child {
    grid-column: 1 / -1;
  }

}

/* ============================================================
   responsive — 640px 断点
   ============================================================ */

@media (max-width: 640px) {

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

  .home-main,
  .inner-main {
    padding: 24px 14px 40px;
  }

  .home-route-strip {
    gap: 4px 16px;
    padding: 10px 0;
  }

  .hero-copy h1 {
    font-size: 26px;
  }

  .hero-entries {
    grid-template-columns: 1fr;
  }

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

  .section-title {
    font-size: 19px;
  }

  .steps-list,
  .scope-list,
  .method-list {
    grid-template-columns: 1fr;
  }

  .scope-item:last-child {
    grid-column: auto;
  }

  .genre-axis-item {
    flex-direction: column;
    gap: 4px;
    padding: 14px 0;
  }

  .genre-tag {
    min-width: 0;
  }

  .chapter-item {
    gap: 12px;
  }

  .chapter-no {
    min-width: 28px;
    font-size: 13px;
  }

  .chapter-content h3 {
    font-size: 16px;
  }

  .trend-item {
    gap: 12px;
  }

  .trend-item-index {
    min-width: 28px;
    font-size: 14px;
  }

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

  .footer-col:first-child {
    grid-column: auto;
  }

  .related-links {
    gap: 6px;
  }

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

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

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

  .error-main {
    padding: 48px 16px;
  }

  .faq-item summary {
    padding: 14px 16px;
    font-size: 14px;
  }

  .faq-answer {
    padding: 12px 16px;
  }

  .faq-answer p {
    font-size: 14px;
  }

  .step-item {
    padding: 18px;
  }

  .scope-item {
    padding: 16px;
  }

  .method-list li {
    padding: 16px;
  }

  .content-section h2 {
    font-size: 18px;
  }

  .genre-match-table {
    min-width: 420px;
  }

  .table-scroll {
    margin: 0 -6px;
    padding: 0 6px;
  }

}