/* ==========================================================================
   vaivx.cn — 羞羞漫画 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base：变量、重置、排版、通用元素
   -------------------------------------------------------------------------- */
:root {
  --paper: #FBFBF9;
  --ink: #1C1C1A;
  --ink-soft: #5C5C57;
  --line: #E1E1DC;
  --accent: #16605A;
  --accent-soft: #EDF3F1;
  --rank: #8A5A2B;
  --foot: #7A7A74;
  --radius: 6px;
  --shadow: 0 1px 2px rgba(28, 28, 26, .05);
}

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
}

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

p {
  margin: 0;
}

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

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover,
a:focus-visible {
  text-decoration: underline;
}

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

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

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

time {
  font-variant-numeric: tabular-nums;
}

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

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

/* --------------------------------------------------------------------------
   layout：骨架容器、页头、主导航、页脚、内页外壳
   -------------------------------------------------------------------------- */

/* 页头 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  max-width: 1120px;
  min-height: 64px;
  margin: 0 auto;
  padding: 0 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0;
}

.brand::before {
  content: "";
  width: 10px;
  height: 10px;
  margin-right: 9px;
  background: var(--accent);
  border-radius: 2px;
}

.brand:hover {
  color: var(--accent);
  text-decoration: none;
}

/* 主导航 */
.site-nav {
  flex: 1 1 auto;
  display: flex;
  justify-content: flex-end;
}

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

.nav-list li {
  display: flex;
}

.nav-list a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 12px;
  color: var(--ink-soft);
  font-size: 15px;
  border-bottom: 2px solid transparent;
}

.nav-list a:hover {
  color: var(--ink);
  text-decoration: none;
}

.nav-list a.is-current {
  color: var(--ink);
  font-weight: 700;
  border-bottom-color: var(--accent);
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.nav-toggle-icon {
  position: relative;
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ink);
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--ink);
}

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

/* 页头工具区 */
.header-tools {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

.tool-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  transition: border-color .18s ease, background-color .18s ease;
}

.tool-btn:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.tool-icon {
  position: relative;
  display: block;
  width: 14px;
  height: 14px;
}

.tool-icon-top::before {
  content: "";
  position: absolute;
  inset: 0;
  border-top: 2px solid var(--ink);
  border-left: 2px solid var(--ink);
  transform: rotate(45deg) translate(2px, 2px);
}

.tool-icon-top::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 3px;
  width: 2px;
  height: 12px;
  background: var(--ink);
}

/* 主内容与内页外壳 */
.site-main {
  display: block;
}

.inner-main,
.home-main {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px 72px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding: 20px 0 0;
  font-size: 13px;
  color: var(--foot);
}

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

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

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

/* 内页标题区 */
.page-header {
  padding: 18px 0 28px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 36px;
}

.page-header-main {
  max-width: 760px;
}

.page-title {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 0;
}

.page-lead {
  margin-top: 10px;
  max-width: 760px;
  font-size: 16px;
  color: var(--ink-soft);
}

.page-description {
  margin-top: 10px;
  max-width: 760px;
  font-size: 14px;
  color: var(--foot);
}

.page-description time {
  color: var(--ink-soft);
}

.page-meta {
  margin-top: 8px;
  font-size: 13px;
  color: var(--foot);
}

/* 页脚 */
.site-footer {
  border-top: 1px solid var(--line);
  background: #F6F6F3;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  max-width: 1120px;
  margin: 0 auto;
  padding: 40px 24px 24px;
}

.footer-brand {
  flex: 1 1 220px;
  min-width: 200px;
}

.footer-name {
  font-size: 17px;
  font-weight: 700;
}

.footer-desc {
  margin-top: 8px;
  max-width: 320px;
  font-size: 13px;
  color: var(--foot);
}

.footer-nav {
  flex: 2 1 560px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}

.footer-group-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
}

.footer-list {
  margin-top: 10px;
}

.footer-list li + li {
  margin-top: 6px;
}

.footer-list a {
  display: inline-block;
  min-height: 24px;
  font-size: 13px;
  color: var(--ink-soft);
}

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

.footer-copyright {
  max-width: 1120px;
  margin: 0 auto;
  padding: 16px 24px 28px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--foot);
}

/* --------------------------------------------------------------------------
   components：跨页面复用的模块
   -------------------------------------------------------------------------- */

/* 事实说明条 */
.fact-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  max-width: 1120px;
  margin: 0 auto;
  padding: 10px 24px;
  font-size: 13px;
  color: var(--foot);
  border-bottom: 1px solid var(--line);
}

.fact-bar-label {
  flex: 0 0 auto;
  padding: 1px 8px;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 3px;
}

.fact-bar-text {
  flex: 1 1 260px;
  color: var(--ink-soft);
}

/* 区块标题组 */
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.section-title {
  font-size: 22px;
  font-weight: 700;
}

.section-more {
  flex: 0 0 auto;
  font-size: 13px;
  color: var(--accent);
}

.section-lead,
.section-intro,
.section-note {
  margin-top: 14px;
  max-width: 760px;
  font-size: 15px;
  color: var(--ink-soft);
}

.section-note {
  font-size: 13px;
  color: var(--foot);
}

.footnote {
  margin-top: 14px;
  max-width: 860px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--foot);
}

/* 题材行（首页预览 + 表格共用字段） */
.genre-row {
  border-bottom: 1px solid var(--line);
}

.genre-no {
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.genre-name {
  font-weight: 700;
}

.genre-scope {
  color: var(--ink-soft);
}

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

/* 题材标签 */
.genre-tag,
.tag {
  display: inline-block;
  padding: 1px 8px;
  font-size: 12px;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 3px;
  white-space: nowrap;
}

/* 更新记录 */
.update-group + .update-group {
  margin-top: 26px;
}

.update-group-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.update-list {
  margin-top: 4px;
}

.update-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.update-cover {
  flex: 0 0 auto;
  width: 54px;
  height: 72px;
  margin: 0;
  overflow: hidden;
  border-radius: 4px;
  background: var(--accent-soft);
}

.update-cover img,
img.update-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.update-meta,
.update-body {
  flex: 1 1 auto;
  min-width: 0;
}

.update-name {
  font-size: 15px;
  font-weight: 700;
}

.update-tags {
  margin-top: 4px;
}

.update-chapter {
  margin-top: 4px;
  font-size: 14px;
  color: var(--ink-soft);
}

.update-date {
  flex: 0 0 auto;
  font-size: 13px;
  color: var(--foot);
  white-space: nowrap;
}

/* 榜单 */
.rank-list {
  margin-top: 4px;
}

.rank-item {
  display: grid;
  grid-template-columns: 44px minmax(120px, 1fr) auto auto;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.rank-no {
  font-size: 18px;
  font-weight: 700;
  color: var(--rank);
}

.rank-name {
  font-weight: 700;
}

.rank-genre {
  font-size: 13px;
  color: var(--foot);
}

.rank-status {
  font-size: 13px;
  color: var(--ink-soft);
  white-space: nowrap;
}

/* 专题合集卡 */
.feature-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.feature-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  overflow: hidden;
  transition: border-color .18s ease, transform .18s ease;
}

.feature-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.feature-cover {
  width: 100%;
  height: 148px;
  object-fit: cover;
}

.feature-name {
  padding: 12px 14px 0;
  font-size: 16px;
}

.feature-count {
  padding: 4px 14px 0;
  font-size: 13px;
  color: var(--accent);
}

.feature-desc {
  padding: 6px 14px 16px;
  font-size: 14px;
  color: var(--ink-soft);
}

/* 步骤条（首页四步 / 阅读说明四步） */
.step-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.step-item {
  padding-top: 14px;
  border-top: 2px solid var(--accent);
}

.step-no,
.step-index {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
}

.step-name {
  margin-top: 6px;
  font-size: 16px;
}

.step-desc {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-soft);
}

/* 字段口径（首页摘要 / 阅读说明 / 更新页） */
.boundary-columns,
.guide-nav-columns,
.distribution-columns,
.scope-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
  margin-top: 20px;
}

.boundary-col,
.guide-nav-col,
.distribution-col,
.scope-col {
  min-width: 0;
}

.boundary-col-title,
.col-title,
.scope-col-title {
  font-size: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.boundary-list,
.distribution-list,
.scope-list {
  margin-top: 12px;
}

.boundary-item {
  display: flex;
  gap: 10px;
  padding: 8px 0;
  font-size: 14px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
}

.boundary-key {
  flex: 0 0 96px;
  font-weight: 700;
  color: var(--ink);
}

.boundary-item > span:only-child {
  flex: 1 1 auto;
}

/* 站内栏目索引 */
.index-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.index-cell {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  transition: border-color .18s ease;
}

.index-cell:hover {
  border-color: var(--accent);
}

.index-link {
  display: inline-block;
  min-height: 24px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

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

.index-desc {
  margin-top: 6px;
  font-size: 13px;
  color: var(--foot);
}

/* 相邻栏目入口 */
.adjacent-grid,
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.adjacent-card,
.related-card {
  display: block;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  transition: border-color .18s ease, transform .18s ease;
}

.adjacent-card:hover,
.related-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  text-decoration: none;
}

.adjacent-name,
.related-name {
  display: block;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.adjacent-desc,
.related-desc {
  margin-top: 6px;
  font-size: 13px;
  color: var(--foot);
}

/* 相关条目列表（更新页） */
.related-list {
  margin-top: 16px;
}

.related-item {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.related-item a {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

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

.related-item p {
  margin-top: 4px;
  font-size: 14px;
  color: var(--ink-soft);
}

/* 内容配图 */
.content-media,
.article-media,
.guide-figure {
  margin: 20px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  overflow: hidden;
}

.content-media img,
.article-media img,
.guide-figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.content-media-inline img {
  max-height: 320px;
}

.content-media figcaption,
.article-media figcaption,
.guide-figure figcaption,
.figure-caption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--foot);
  border-top: 1px solid var(--line);
}

/* --------------------------------------------------------------------------
   pages：首页
   -------------------------------------------------------------------------- */
.hero-section {
  padding: 36px 0 0;
}

.hero-top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 420px);
  gap: 40px;
  align-items: center;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--line);
}

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

.hero-eyebrow {
  font-size: 13px;
  color: var(--accent);
}

.hero-title {
  margin-top: 10px;
  font-size: 38px;
  font-weight: 700;
  letter-spacing: 0;
}

.hero-lead {
  margin-top: 14px;
  max-width: 620px;
  font-size: 16px;
  color: var(--ink-soft);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  font-size: 15px;
  font-weight: 700;
  border-radius: var(--radius);
  transition: background-color .18s ease, color .18s ease, border-color .18s ease;
}

.btn:hover {
  text-decoration: none;
}

.btn-primary {
  color: #fff;
  background: var(--accent);
}

.btn-primary:hover {
  background: #104B46;
}

.btn-ghost {
  color: var(--ink);
  border: 1px solid var(--line);
  background: #fff;
}

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

.hero-media {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  overflow: hidden;
}

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

.hero-caption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--foot);
  border-top: 1px solid var(--line);
}

.hero-genre-preview {
  padding: 32px 0 0;
}

.genre-rows {
  margin-top: 4px;
}

.genre-rows-preview .genre-row {
  display: grid;
  grid-template-columns: 56px 140px minmax(0, 1fr) 180px;
  align-items: center;
  gap: 16px;
  padding: 12px 0;
}

.updates-section,
.rank-feature-section,
.steps-section,
.boundary-section,
.index-section {
  padding-top: 48px;
}

.update-groups {
  margin-top: 22px;
}

.rank-feature-section {
  display: grid;
  grid-template-columns: 58% minmax(0, 1fr);
  gap: 32px;
}

.rank-column,
.feature-column {
  min-width: 0;
}

/* --------------------------------------------------------------------------
   pages：题材分类
   -------------------------------------------------------------------------- */
.genre-table-section,
.genre-rule-section,
.genre-distribution-section,
.adjacent-section {
  padding-top: 8px;
}

.genre-table-section + .genre-rule-section,
.genre-rule-section + .genre-distribution-section,
.genre-distribution-section + .adjacent-section {
  margin-top: 44px;
}

.genre-table {
  margin-top: 22px;
  font-size: 15px;
}

.genre-table thead th {
  padding: 10px 12px;
  text-align: left;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-soft);
  background: #F4F4F1;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

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

.genre-table tbody tr:hover {
  background: #F7F9F8;
}

.genre-table .genre-name {
  color: var(--ink);
}

.genre-table .genre-sample {
  font-size: 14px;
}

.genre-rule-section .rule-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.genre-rule-section .rule-item:first-of-type {
  margin-top: 16px;
  border-top: 1px solid var(--line);
}

.rule-title {
  font-size: 16px;
}

.genre-rule-section .rule-item p {
  margin-top: 8px;
  max-width: 760px;
  font-size: 15px;
  color: var(--ink-soft);
}

.distribution-col p {
  margin-top: 12px;
  font-size: 15px;
  color: var(--ink-soft);
}

.distribution-list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 9px 0;
  font-size: 14px;
  border-bottom: 1px solid var(--line);
}

.dist-label {
  color: var(--ink-soft);
}

.dist-value {
  font-weight: 700;
  color: var(--ink);
}

/* --------------------------------------------------------------------------
   pages：最近更新
   -------------------------------------------------------------------------- */
.updates-section {
  padding-top: 8px;
}

.field-section,
.status-section,
.related-section {
  margin-top: 44px;
}

.field-list {
  margin-top: 18px;
  border-top: 1px solid var(--line);
}

.field-row {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.field-name {
  font-weight: 700;
  color: var(--ink);
}

.field-desc {
  min-width: 220px;
  font-size: 15px;
  color: var(--ink-soft);
}

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

.status-col {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.status-name {
  font-size: 16px;
  color: var(--accent);
}

.status-desc {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-soft);
}

/* --------------------------------------------------------------------------
   pages：阅读说明
   -------------------------------------------------------------------------- */
.guide-steps {
  padding-top: 8px;
}

.guide-nav-usage,
.guide-scope,
.guide-fields,
.guide-faq,
.related-links {
  margin-top: 44px;
}

.guide-nav-col .col-text {
  margin-top: 12px;
  font-size: 15px;
  color: var(--ink-soft);
}

.col-list {
  margin-top: 12px;
}

.col-list li {
  padding: 8px 0 8px 16px;
  position: relative;
  font-size: 14px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
}

.col-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

.guide-figure {
  margin-top: 26px;
}

.guide-figure img {
  max-height: 360px;
}

.scope-list {
  margin-top: 16px;
}

.scope-item {
  padding: 12px 0;
  font-size: 15px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
}

.guide-fields .field-list {
  display: block;
}

.guide-fields .field-row {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.guide-fields dt.field-name {
  font-weight: 700;
  color: var(--ink);
}

.guide-fields dd.field-desc {
  margin: 0;
  min-width: 220px;
  font-size: 15px;
  color: var(--ink-soft);
}

/* 折叠问答 */
.faq-list {
  margin-top: 18px;
  border-top: 1px solid var(--line);
}

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

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 48px;
  padding: 12px 0;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "展开";
  flex: 0 0 auto;
  font-size: 13px;
  font-weight: 400;
  color: var(--accent);
}

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

.faq-answer {
  padding: 0 0 16px;
  max-width: 760px;
  font-size: 15px;
  color: var(--ink-soft);
}

/* --------------------------------------------------------------------------
   pages：字段与边界
   -------------------------------------------------------------------------- */
.section-fieldspec,
.section-scope,
.section-feedback,
.section-related {
  padding-top: 8px;
}

.section-scope,
.section-feedback,
.section-related {
  margin-top: 44px;
}

.fieldspec-media {
  margin-top: 22px;
}

.fieldspec-media img {
  max-height: 340px;
}

.fieldspec-table {
  margin-top: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
}

.fieldspec-row {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
}

.fieldspec-row + .fieldspec-row {
  border-top: 1px solid var(--line);
}

.fieldspec-head {
  background: #F4F4F1;
}

.fieldspec-cell {
  padding: 12px 16px;
  font-size: 15px;
  color: var(--ink-soft);
}

.fieldspec-cell + .fieldspec-cell {
  border-left: 1px solid var(--line);
}

.fieldspec-head .fieldspec-cell {
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-soft);
}

.fieldspec-field {
  font-weight: 700;
  color: var(--ink);
}

.principle-list {
  margin-top: 20px;
}

.principle-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.principle-index {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
}

.principle-name {
  margin-top: 4px;
  font-size: 16px;
}

.principle-desc {
  margin-top: 8px;
  max-width: 760px;
  font-size: 15px;
  color: var(--ink-soft);
}

.scope-columns {
  margin-top: 26px;
}

.scope-col .scope-list li {
  padding: 8px 0;
  font-size: 14px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
}

.feedback-list {
  margin-top: 20px;
}

.feedback-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

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

.feedback-desc {
  margin-top: 8px;
  max-width: 760px;
  font-size: 15px;
  color: var(--ink-soft);
}

.feedback-note {
  margin-top: 26px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  background: #fff;
}

.feedback-note-title {
  font-size: 16px;
}

.feedback-note-desc {
  margin-top: 8px;
  font-size: 15px;
  color: var(--ink-soft);
}

/* --------------------------------------------------------------------------
   pages：404
   -------------------------------------------------------------------------- */
.error-main {
  max-width: 1120px;
  margin: 0 auto;
  padding: 72px 24px 88px;
}

.error-panel {
  max-width: 640px;
}

.error-code {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
}

.error-panel h1 {
  margin-top: 10px;
  font-size: 32px;
}

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

.error-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  margin-top: 22px;
  padding: 0 20px;
  font-weight: 700;
  color: #fff;
  background: var(--accent);
  border-radius: var(--radius);
}

.error-action:hover {
  background: #104B46;
  text-decoration: none;
}

.error-links {
  margin-top: 44px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.error-links h2 {
  font-size: 18px;
}

.error-link-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.error-link-list a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  font-weight: 700;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.error-link-list a:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   responsive：960px 与 640px 断点
   -------------------------------------------------------------------------- */
@media (max-width: 960px) {
  .header-inner {
    gap: 12px;
    padding: 0 18px;
  }

  .site-nav {
    justify-content: flex-end;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-list {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 30;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 18px 14px;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
  }

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

  .nav-list a {
    min-height: 44px;
    padding: 0 4px;
    border-bottom: 1px solid var(--line);
  }

  .nav-list a.is-current {
    border-bottom-color: var(--accent);
  }

  .inner-main,
  .home-main {
    padding: 0 18px 56px;
  }

  .fact-bar {
    padding: 10px 18px;
  }

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

  .hero-media img {
    height: 240px;
  }

  .genre-rows-preview .genre-row {
    grid-template-columns: 48px 120px minmax(0, 1fr) 140px;
    gap: 12px;
  }

  .rank-feature-section {
    grid-template-columns: minmax(0, 1fr);
    gap: 40px;
  }

  .step-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .index-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .footer-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  .header-inner {
    min-height: 56px;
    padding: 0 14px;
  }

  .brand {
    font-size: 17px;
  }

  .inner-main,
  .home-main {
    padding: 0 14px 48px;
  }

  .fact-bar {
    padding: 8px 14px;
  }

  .page-header {
    padding-top: 10px;
    margin-bottom: 26px;
  }

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

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

  .hero-section {
    padding-top: 24px;
  }

  .hero-title {
    font-size: 26px;
  }

  .hero-media img {
    height: 190px;
  }

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

  .genre-rows-preview .genre-row {
    grid-template-columns: 40px minmax(0, 1fr);
    grid-template-areas:
      "no name"
      "scope scope"
      "status status";
    gap: 4px 10px;
    padding: 12px 0;
  }

  .genre-rows-preview .genre-no { grid-area: no; }
  .genre-rows-preview .genre-name { grid-area: name; }
  .genre-rows-preview .genre-scope { grid-area: scope; font-size: 14px; }
  .genre-rows-preview .genre-status { grid-area: status; }

  .update-item {
    flex-wrap: wrap;
    gap: 10px;
  }

  .update-cover {
    width: 46px;
    height: 62px;
  }

  .update-date {
    width: 100%;
    text-align: left;
  }

  .rank-item {
    grid-template-columns: 32px minmax(0, 1fr) auto;
    grid-template-areas:
      "no name name"
      "no genre status";
    gap: 4px 10px;
  }

  .rank-item .rank-no { grid-area: no; }
  .rank-item .rank-name { grid-area: name; }
  .rank-item .rank-genre { grid-area: genre; }
  .rank-item .rank-status { grid-area: status; }

  .feature-list,
  .step-list,
  .boundary-columns,
  .guide-nav-columns,
  .distribution-columns,
  .scope-columns,
  .status-columns,
  .adjacent-grid,
  .related-grid,
  .error-link-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .index-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .fieldspec-cell + .fieldspec-cell {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .field-row,
  .guide-fields .field-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .boundary-item {
    flex-wrap: wrap;
    gap: 4px;
  }

  .boundary-key {
    flex: 1 1 100%;
  }

  .genre-table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
  }

  .genre-table thead,
  .genre-table tbody {
    display: table;
    width: 100%;
    min-width: 640px;
  }

  .footer-inner {
    gap: 22px;
    padding: 32px 14px 18px;
  }

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

  .footer-copyright {
    padding: 14px 14px 24px;
  }

  .error-main {
    padding: 48px 14px 64px;
  }

  .error-panel h1 {
    font-size: 24px;
  }
}