/* =========================================================
   樱花动漫电视剧 · 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================= */

/* ---------------------------------------------------------
   1. base —— 变量、重置、排版、通用元素
   --------------------------------------------------------- */
:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --text: #1f2328;
  --text-sub: #57606a;
  --border: #d8dee4;
  --border-soft: #e6eaef;
  --primary: #3a6ea5;
  --primary-deep: #2f5c8a;
  --tag-bg: #eef3fa;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Courier New", monospace;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --radius: 6px;
  --radius-sm: 4px;
  --wrap: 1120px;
  --gap: 24px;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  line-height: 1.35;
  font-weight: 600;
  color: var(--text);
}

p {
  margin: 0;
}

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

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

a:hover {
  color: var(--primary-deep);
  text-decoration: underline;
}

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

figure {
  margin: 0;
}

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

button {
  font: inherit;
  color: inherit;
}

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

/* ---------------------------------------------------------
   2. layout —— 站骨架、容器、页头、页脚、主内容
   --------------------------------------------------------- */

.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-main {
  flex: 1 0 auto;
  display: block;
}

/* 顶部线索说明条 */
.site-notice {
  background: var(--tag-bg);
  border-bottom: 1px solid var(--border-soft);
}

.site-notice p {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 8px 24px;
  font-size: 13px;
  color: var(--text-sub);
}

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

.header-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 10px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
}

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

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

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

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 9px 8px;
  border-radius: 2px;
  background: var(--surface);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.brand-name {
  font-size: 16px;
  font-weight: 600;
}

.brand-slogan {
  font-size: 12px;
  color: var(--text-sub);
}

/* 导航 */
.site-nav {
  margin-left: auto;
}

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

.nav-list > li {
  display: block;
}

.nav-list a {
  display: block;
  padding: 9px 14px;
  font-size: 15px;
  color: var(--text-sub);
  border-radius: var(--radius-sm);
  min-height: 44px;
  line-height: 26px;
  white-space: nowrap;
}

.nav-list a:hover {
  background: var(--tag-bg);
  color: var(--primary);
  text-decoration: none;
}

.nav-list a.is-current {
  color: var(--primary);
  font-weight: 600;
  background: var(--tag-bg);
}

/* 汉堡按钮（桌面隐藏） */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  margin-left: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
}

/* 主内容宽度 */
.home-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px 56px;
  width: 100%;
}

.inner-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 24px 24px 56px;
  width: 100%;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-sub);
  margin-bottom: 16px;
}

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

.breadcrumb-current {
  color: var(--text-sub);
}

/* 页面标题区 */
.page-header {
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.page-title {
  font-size: 28px;
  font-weight: 600;
  margin-bottom: 10px;
}

.page-description {
  font-size: 15px;
  color: var(--text-sub);
  max-width: 76ch;
}

/* 页脚 */
.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  margin-top: auto;
}

.footer-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 36px 24px 24px;
  display: grid;
  grid-template-columns: minmax(240px, 1.4fr) repeat(4, minmax(140px, 1fr));
  gap: 28px;
}

.footer-brand {
  max-width: 320px;
}

.footer-name {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.footer-desc {
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.7;
}

.footer-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 10px;
}

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

.footer-list a {
  font-size: 13px;
  color: var(--text-sub);
}

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

.footer-bottom {
  border-top: 1px solid var(--border-soft);
}

.footer-copy {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 14px 24px;
  font-size: 12px;
  color: var(--text-sub);
}

/* ---------------------------------------------------------
   3. components —— 通用区块、按钮、标签、列表、表格
   --------------------------------------------------------- */

.section {
  padding: 36px 0;
  border-bottom: 1px solid var(--border-soft);
}

.section:last-of-type {
  border-bottom: 0;
}

.section-head {
  margin-bottom: 20px;
}

.section-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}

.section-sub,
.section-desc,
.section-lead,
.section-intro {
  font-size: 14px;
  color: var(--text-sub);
  max-width: 78ch;
}

.section-more {
  margin-top: 16px;
  font-size: 14px;
}

.link-more {
  font-size: 14px;
  font-weight: 500;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  border: 1px solid transparent;
}

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

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

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

.btn-ghost {
  background: var(--surface);
  color: var(--primary);
  border-color: var(--border);
}

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

/* 状态标签 */
.tag {
  display: inline-block;
  padding: 1px 8px;
  border-radius: var(--radius-sm);
  background: var(--tag-bg);
  color: var(--primary);
  font-size: 12px;
  font-family: var(--mono);
  line-height: 1.6;
}

.tag-serial {
  background: #eef3fa;
  color: #3a6ea5;
}

.tag-done {
  background: #eef3ee;
  color: #3f6b4a;
}

.status {
  display: inline-block;
  padding: 1px 8px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-family: var(--mono);
  line-height: 1.6;
}

.status-ongoing {
  background: #eef3fa;
  color: #3a6ea5;
}

.status-done {
  background: #eef3ee;
  color: #3f6b4a;
}

/* 字段列表 / 字段表 */
.field-list {
  display: grid;
  gap: 0;
}

.field-list dt,
.field-list dd {
  margin: 0;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-soft);
  font-size: 14px;
}

.field-list dt,
.field-name {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
}

.field-list dd {
  color: var(--text-sub);
}

.field-desc {
  font-size: 14px;
  color: var(--text-sub);
}

.field-note {
  margin-top: 14px;
  font-size: 13px;
  color: var(--text-sub);
}

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

.field-table caption,
.sample-caption {
  text-align: left;
  font-size: 13px;
  color: var(--text-sub);
  padding-bottom: 10px;
}

.field-table th,
.field-table td,
.sample-table th,
.sample-table td {
  border: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}

.field-table thead th,
.sample-table thead th {
  background: var(--tag-bg);
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
}

.field-table tbody tr:hover,
.sample-table tbody tr:hover {
  background: #f2f6fb;
}

/* 页内锚点目录 */
.page-aside {
  align-self: start;
  position: sticky;
  top: 84px;
}

.aside-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.toc-list li {
  margin-bottom: 4px;
}

.toc-list a {
  display: block;
  padding: 6px 8px;
  font-size: 13px;
  color: var(--text-sub);
  border-left: 2px solid transparent;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.toc-list a:hover {
  background: var(--tag-bg);
  border-left-color: var(--primary);
  color: var(--primary);
  text-decoration: none;
}

/* ---------------------------------------------------------
   4. pages —— 首页
   --------------------------------------------------------- */

/* 首屏 */
.hero {
  padding: 40px 0 36px;
  border-bottom: 1px solid var(--border-soft);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 36px;
  align-items: center;
}

.hero-eyebrow {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--primary);
  margin-bottom: 10px;
}

.hero-title {
  font-size: 28px;
  font-weight: 600;
  margin-bottom: 14px;
}

.hero-desc {
  font-size: 15px;
  color: var(--text-sub);
  max-width: 60ch;
  margin-bottom: 16px;
}

.hero-points {
  display: grid;
  gap: 6px;
  margin-bottom: 22px;
}

.hero-points li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  color: var(--text-sub);
}

.hero-points li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 11px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--primary);
}

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

.hero-media {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
}

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

.hero-media figcaption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--text-sub);
  border-top: 1px solid var(--border-soft);
}

/* 题材分类总览表 */
.genre-table {
  border-top: 1px solid var(--border);
}

.genre-row {
  display: grid;
  grid-template-columns: 64px minmax(150px, 0.5fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 14px 0;
  border-bottom: 1px solid var(--border-soft);
}

.genre-code {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--primary);
  padding-top: 3px;
}

.genre-name {
  font-size: 17px;
  font-weight: 600;
}

.genre-scope,
.genre-sample {
  font-size: 14px;
  color: var(--text-sub);
}

.genre-sample a {
  margin-right: 10px;
  white-space: nowrap;
}

/* 封面墙与最近更新 */
.wall-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(260px, 0.85fr);
  gap: 32px;
  align-items: start;
}

.wall-subtitle {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.wall-groups {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
}

.wall-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.16s ease, border-color 0.16s ease;
}

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

.wall-figure {
  border-bottom: 1px solid var(--border-soft);
}

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

.wall-body {
  padding: 10px 12px 12px;
}

.wall-name {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}

.wall-genre {
  font-size: 12px;
  color: var(--primary);
  font-family: var(--mono);
  margin-bottom: 4px;
}

.wall-meta {
  font-size: 12px;
  color: var(--text-sub);
  margin-bottom: 4px;
}

.wall-note {
  font-size: 13px;
  color: var(--text-sub);
}

/* 最近更新列表 */
.recent-list {
  border-top: 1px solid var(--border);
}

.recent-item {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-soft);
}

.recent-date {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-sub);
  padding-top: 2px;
}

.recent-name {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 2px;
}

.recent-note {
  font-size: 13px;
  color: var(--text-sub);
}

.aside-more {
  margin-top: 14px;
  font-size: 14px;
}

/* 排行榜 */
.rank-list {
  border-top: 1px solid var(--border);
}

.rank-row {
  display: grid;
  grid-template-columns: 44px minmax(160px, 0.7fr) minmax(0, 1.3fr);
  gap: 14px;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-soft);
}

.rank-no {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--primary);
}

.rank-name {
  font-size: 16px;
  font-weight: 600;
}

.rank-genre {
  font-size: 12px;
  color: var(--text-sub);
  font-family: var(--mono);
}

.rank-reason {
  font-size: 14px;
  color: var(--text-sub);
}

/* 阅读说明摘要 */
.guide-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
  align-items: start;
}

.guide-subtitle {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.guide-steps {
  display: grid;
  gap: 10px;
}

.guide-step {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.step-no {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--primary);
  padding-top: 2px;
}

.step-text {
  font-size: 14px;
  color: var(--text-sub);
}

.guide-note {
  font-size: 14px;
  color: var(--text-sub);
}

/* 站内栏目索引 */
.index-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.index-cell {
  display: block;
}

.index-link {
  display: block;
  height: 100%;
  padding: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.16s ease, transform 0.16s ease;
}

.index-link:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  text-decoration: none;
}

.index-name {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.index-desc {
  display: block;
  font-size: 13px;
  color: var(--text-sub);
}

/* ---------------------------------------------------------
   5. pages —— 题材分类页
   --------------------------------------------------------- */

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(200px, 240px);
  gap: 36px;
  align-items: start;
}

.sidebar-left .page-layout {
  grid-template-columns: minmax(200px, 240px) minmax(0, 1fr);
}

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

.section-genre-index,
.section-genre-reference {
  padding: 28px 0;
  border-bottom: 1px solid var(--border-soft);
}

.section-genre-reference {
  border-bottom: 0;
  padding-bottom: 0;
}

.genre-index-list {
  border-top: 1px solid var(--border);
  margin-top: 16px;
}

.genre-index-list .genre-row {
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 16px;
  padding: 16px 0;
}

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

.genre-body .genre-name {
  margin-bottom: 6px;
}

.genre-body .genre-scope {
  margin-bottom: 6px;
}

.reference-columns {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 32px;
  align-items: start;
  margin-top: 16px;
}

.reference-column {
  min-width: 0;
}

.column-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.genre-figure {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 16px;
  background: var(--surface);
}

.genre-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.genre-figure figcaption {
  padding: 8px 12px;
  font-size: 12px;
  color: var(--text-sub);
  border-top: 1px solid var(--border-soft);
}

.work-list {
  display: grid;
  gap: 10px;
}

.work-item {
  padding: 10px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.work-name {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 2px;
}

.work-meta {
  font-size: 12px;
  color: var(--text-sub);
  font-family: var(--mono);
}

/* ---------------------------------------------------------
   6. pages —— 专题片单页
   --------------------------------------------------------- */

.collection-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.collection-card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.16s ease, border-color 0.16s ease;
}

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

.collection-cover {
  border-bottom: 1px solid var(--border-soft);
}

.collection-cover img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.collection-body {
  padding: 14px 16px 16px;
}

.collection-name {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 6px;
}

.collection-name a {
  color: var(--text);
}

.collection-name a:hover {
  color: var(--primary);
  text-decoration: none;
}

.collection-theme {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--primary);
  margin-bottom: 8px;
}

.collection-desc {
  font-size: 14px;
  color: var(--text-sub);
  margin-bottom: 10px;
}

.collection-meta {
  font-size: 13px;
  color: var(--text-sub);
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.meta-label {
  font-family: var(--mono);
  color: var(--text-sub);
}

.meta-value {
  color: var(--text);
}

/* 片单规则 */
.rule-list {
  display: grid;
  gap: 14px;
  margin-top: 16px;
}

.rule-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 14px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.rule-index {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--primary);
  padding-top: 2px;
}

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

.rule-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}

.rule-text {
  font-size: 14px;
  color: var(--text-sub);
}

/* 片单样例表 */
.sample-table {
  margin-top: 16px;
}

.cell-index {
  font-family: var(--mono);
  color: var(--text-sub);
  width: 48px;
}

.cell-title a {
  font-weight: 600;
}

/* 片单提示 */
.tips-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 16px;
}

.tips-col {
  min-width: 0;
  padding: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.tips-col-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
}

.tips-text {
  font-size: 14px;
  color: var(--text-sub);
}

/* 相关入口 */
.related-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 16px;
}

.related-item {
  display: block;
  padding: 14px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.related-item a {
  font-size: 14px;
  font-weight: 500;
}

/* ---------------------------------------------------------
   7. pages —— 更新记录页
   --------------------------------------------------------- */

.record-figure {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  margin-bottom: 28px;
}

.record-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 21 / 9;
  object-fit: cover;
}

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

.record-section,
.changes-section,
.followup-section {
  padding: 28px 0;
  border-bottom: 1px solid var(--border-soft);
}

.followup-section {
  border-bottom: 0;
  padding-bottom: 0;
}

.month-group {
  margin-top: 20px;
}

.month-title {
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 4px;
}

.record-list {
  display: grid;
}

.record-item {
  display: grid;
  grid-template-columns: 96px 100px 96px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-soft);
}

.record-date {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text-sub);
  padding-top: 2px;
}

.record-type {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--primary);
  background: var(--tag-bg);
  border-radius: var(--radius-sm);
  padding: 1px 8px;
  justify-self: start;
  line-height: 1.7;
}

.record-genre {
  font-size: 13px;
  color: var(--text-sub);
  padding-top: 2px;
}

.record-note {
  font-size: 14px;
  color: var(--text-sub);
}

/* 变动类型与题材 */
.changes-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
  align-items: start;
  margin-top: 16px;
}

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

.subsection-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.type-list {
  display: grid;
  gap: 10px;
}

.type-item {
  padding: 12px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.type-name {
  display: block;
  font-size: 14px;
  font-weight: 600;
  font-family: var(--mono);
  color: var(--primary);
  margin-bottom: 4px;
}

.type-desc {
  font-size: 14px;
  color: var(--text-sub);
}

.genre-list {
  display: grid;
  gap: 8px;
}

.genre-item {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
  padding: 8px 0;
  border-bottom: 1px solid var(--border-soft);
}

.genre-item a {
  font-size: 14px;
  font-weight: 500;
}

.genre-tip {
  font-size: 13px;
  color: var(--text-sub);
}

.genre-footnote {
  margin-top: 14px;
  font-size: 13px;
  color: var(--text-sub);
}

.genre-footnote a {
  margin-right: 10px;
}

/* 追更四步 */
.followup-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.followup-step {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 14px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.followup-step .step-index {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--primary);
  padding-top: 2px;
}

.followup-step .step-text {
  font-size: 14px;
  color: var(--text-sub);
}

/* ---------------------------------------------------------
   8. pages —— 阅读说明页
   --------------------------------------------------------- */

.guide-fields,
.guide-flow,
.guide-faq {
  padding: 28px 0;
  border-bottom: 1px solid var(--border-soft);
}

.guide-faq {
  border-bottom: 0;
  padding-bottom: 0;
}

.guide-figure {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  margin: 16px 0;
}

.guide-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.guide-figure figcaption {
  padding: 8px 12px;
  font-size: 12px;
  color: var(--text-sub);
  border-top: 1px solid var(--border-soft);
}

.flow-columns {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 32px;
  align-items: start;
  margin-top: 16px;
}

.flow-steps,
.flow-boundary {
  min-width: 0;
}

.step-list {
  display: grid;
  gap: 12px;
}

.step-item {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.step-item .step-index {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--primary);
  padding-top: 2px;
}

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

.step-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}

.step-body p {
  font-size: 14px;
  color: var(--text-sub);
}

.flow-boundary {
  padding: 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.flow-boundary > p {
  font-size: 14px;
  color: var(--text-sub);
  margin-bottom: 12px;
}

.boundary-list {
  display: grid;
  gap: 8px;
}

.boundary-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  color: var(--text-sub);
}

.boundary-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 10px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--primary);
}

/* FAQ */
.faq-list {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.faq-question {
  cursor: pointer;
  padding: 13px 44px 13px 16px;
  font-size: 15px;
  font-weight: 600;
  list-style: none;
  position: relative;
}

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

.faq-question::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--mono);
  font-size: 17px;
  color: var(--primary);
}

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

.faq-question:hover {
  color: var(--primary);
}

.faq-answer {
  padding: 0 16px 14px;
  border-top: 1px solid var(--border-soft);
}

.faq-answer p {
  font-size: 14px;
  color: var(--text-sub);
  padding-top: 12px;
}

/* ---------------------------------------------------------
   9. pages —— 404
   --------------------------------------------------------- */

.error-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 64px 24px 72px;
  width: 100%;
}

.error-block {
  max-width: 560px;
}

.error-code {
  font-family: var(--mono);
  font-size: 15px;
  color: var(--primary);
  margin-bottom: 10px;
}

.error-block h1 {
  font-size: 28px;
  margin-bottom: 12px;
}

.error-text {
  font-size: 15px;
  color: var(--text-sub);
  margin-bottom: 20px;
}

.error-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.error-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
}

.error-links a:hover {
  border-color: var(--primary);
  text-decoration: none;
}

/* ---------------------------------------------------------
   10. responsive
   --------------------------------------------------------- */

@media (max-width: 900px) {
  .header-inner {
    flex-wrap: wrap;
    gap: 12px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    order: 3;
    width: 100%;
    margin-left: 0;
    border-top: 1px solid var(--border-soft);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px 0;
  }

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

  .nav-list a {
    padding: 10px 8px;
    border-radius: var(--radius-sm);
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .hero-media {
    order: -1;
  }

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

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

  .wall-column {
    order: 2;
  }

  .wall-aside {
    order: 1;
  }

  .genre-row {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 6px 16px;
  }

  .genre-row .genre-code {
    grid-row: span 3;
  }

  .genre-row .genre-scope,
  .genre-row .genre-sample {
    grid-column: 2;
  }

  .rank-row {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 4px 12px;
  }

  .rank-row .rank-no {
    grid-row: span 2;
  }

  .rank-row .rank-reason {
    grid-column: 2;
  }

  .guide-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

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

  .page-layout,
  .sidebar-left .page-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .page-aside {
    position: static;
  }

  .reference-columns {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

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

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

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

  .record-item {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 4px 14px;
  }

  .record-item .record-date {
    grid-row: span 3;
  }

  .record-item .record-type,
  .record-item .record-genre,
  .record-item .record-note {
    grid-column: 2;
  }

  .changes-columns {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .flow-columns {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }

  .footer-brand {
    grid-column: 1 / -1;
    max-width: none;
  }
}

@media (max-width: 600px) {
  body {
    font-size: 15px;
  }

  .site-notice p {
    padding: 8px 16px;
  }

  .header-inner {
    padding: 8px 16px;
  }

  .brand-slogan {
    display: none;
  }

  .home-main,
  .inner-main,
  .error-main {
    padding-left: 16px;
    padding-right: 16px;
  }

  .home-main {
    padding-bottom: 40px;
  }

  .inner-main {
    padding-top: 16px;
    padding-bottom: 40px;
  }

  .page-title,
  .error-block h1 {
    font-size: 22px;
  }

  .hero {
    padding: 24px 0 28px;
  }

  .hero-title {
    font-size: 22px;
  }

  .section {
    padding: 26px 0;
  }

  .section-title {
    font-size: 18px;
  }

  .hero-actions .btn {
    flex: 1 1 100%;
  }

  .wall-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .recent-item {
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 10px;
  }

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

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    padding: 28px 16px 20px;
  }

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

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

  .field-table,
  .sample-table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }

  .field-table caption,
  .sample-caption {
    white-space: normal;
  }
}