/* ==========================================================================
   樱花电视剧在线 · 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base
   -------------------------------------------------------------------------- */

:root {
  --color-bg: #f6f7f5;
  --color-surface: #ffffff;
  --color-text: #1f2421;
  --color-muted: #5c635e;
  --color-line: #dcdfd9;
  --color-accent: #2f6d5a;
  --color-accent-dark: #245445;
  --color-tag: #e7efe9;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "SFMono-Regular", "JetBrains Mono", Consolas, "Liberation Mono", Menlo, monospace;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --shadow-card: 0 1px 2px rgba(31, 36, 33, 0.05);
  --container: 1160px;
  --gap-lg: 40px;
  --gap-md: 24px;
  --gap-sm: 14px;
}

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

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

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

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

p {
  margin: 0;
}

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

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

a:hover,
a:focus-visible {
  color: var(--color-accent-dark);
  text-decoration: underline;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

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

figure {
  margin: 0;
}

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

button {
  font: inherit;
  color: inherit;
}

/* --------------------------------------------------------------------------
   layout · 全站骨架
   -------------------------------------------------------------------------- */

.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
}

.site-header {
  position: relative;
  z-index: 20;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-line);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  color: var(--color-text);
  text-decoration: none;
  flex: 1 1 auto;
  min-width: 0;
}

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

.brand-name {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--color-accent);
  line-height: 1.3;
}

.brand-slogan {
  font-size: 12.5px;
  color: var(--color-muted);
  line-height: 1.4;
}

.site-nav {
  flex: 0 0 auto;
}

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

.nav-item {
  display: block;
}

.nav-link {
  display: block;
  padding: 9px 12px;
  min-height: 40px;
  font-size: 15px;
  color: var(--color-muted);
  border-bottom: 2px solid transparent;
  text-decoration: none;
  white-space: nowrap;
  line-height: 1.5;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-text);
  text-decoration: none;
  border-bottom-color: var(--color-line);
}

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

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  min-height: 44px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  cursor: pointer;
}

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

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

.nav-toggle-icon::before {
  top: -5px;
}

.nav-toggle-icon::after {
  top: 5px;
}

.nav-toggle-text {
  font-size: 14px;
  color: var(--color-text);
}

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

.home-main {
  padding-bottom: 8px;
}

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

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 18px 0 6px;
  font-size: 13.5px;
  color: var(--color-muted);
}

.breadcrumb a {
  color: var(--color-muted);
  text-decoration: none;
}

.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  color: var(--color-accent);
  text-decoration: underline;
}

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

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

.page-header {
  padding: 14px 0 28px;
  border-bottom: 1px solid var(--color-line);
  margin-bottom: 36px;
}

.page-title {
  font-size: 30px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.35;
  margin-bottom: 12px;
}

.page-description {
  max-width: 820px;
  font-size: 15.5px;
  color: var(--color-muted);
  line-height: 1.8;
}

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

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 40px 24px 28px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 28px 32px;
}

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

.footer-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-line);
}

.footer-text {
  font-size: 13.5px;
  color: var(--color-muted);
  line-height: 1.75;
}

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

.footer-list a {
  font-size: 13.5px;
  color: var(--color-muted);
  text-decoration: none;
}

.footer-list a:hover,
.footer-list a:focus-visible {
  color: var(--color-accent);
  text-decoration: underline;
}

.footer-copyright {
  max-width: var(--container);
  margin: 0 auto;
  padding: 18px 24px 32px;
  font-size: 13px;
  color: var(--color-muted);
  border-top: 1px solid var(--color-line);
}

/* 通用 section 与标题 */
.section {
  padding: 44px 0;
  border-top: 1px solid var(--color-line);
}

.home-main > .section:first-of-type {
  border-top: 0;
}

.section-head {
  margin-bottom: 24px;
}

.section-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
}

.section-desc,
.section-intro,
.section-text,
.section-note {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.8;
}

.section-text + .section-text,
.section-intro + .section-text {
  margin-top: 12px;
}

.section-footnote,
.table-footnote,
.column-footnote {
  margin-top: 18px;
  font-size: 14px;
  color: var(--color-muted);
}

/* --------------------------------------------------------------------------
   components · 事实条 / 表格 / 卡片 / 步骤 / 字段 / 索引
   -------------------------------------------------------------------------- */

/* 首页事实说明条 */
.fact-bar {
  background-color: var(--color-tag);
  border-bottom: 1px solid var(--color-line);
}

.fact-bar-text {
  max-width: var(--container);
  margin: 0 auto;
  padding: 10px 24px;
  font-size: 13.5px;
  color: var(--color-accent-dark);
  line-height: 1.7;
}

/* 数据表格 */
.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
}

.data-table {
  min-width: 620px;
  font-size: 14.5px;
  line-height: 1.55;
}

.table-caption {
  caption-side: top;
  text-align: left;
  padding: 12px 16px;
  font-size: 13px;
  color: var(--color-muted);
  border-bottom: 1px solid var(--color-line);
  background-color: var(--color-bg);
}

.data-table thead th {
  text-align: left;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--color-text);
  padding: 12px 16px;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-line);
  white-space: nowrap;
}

.data-table tbody th,
.data-table tbody td {
  text-align: left;
  padding: 12px 16px;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-line);
  vertical-align: top;
}

.data-table tbody tr:last-child th,
.data-table tbody tr:last-child td {
  border-bottom: 0;
}

.data-table tbody tr:hover {
  background-color: var(--color-bg);
}

.data-table tbody th {
  font-weight: 600;
  white-space: nowrap;
}

.cell-code {
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--color-accent-dark);
  white-space: nowrap;
}

.cell-name {
  font-weight: 600;
  white-space: nowrap;
}

.compact-table {
  min-width: 320px;
  font-size: 14px;
}

.compact-table thead th,
.compact-table tbody td {
  padding: 9px 14px;
}

/* 卡片通用 */
.card-grid {
  display: grid;
  gap: var(--gap-md);
}

.card {
  display: flex;
  flex-direction: column;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: border-color 0.18s ease;
}

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

.card-media {
  margin: 0;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background-color: var(--color-tag);
}

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

.card-title {
  font-size: 17px;
  font-weight: 700;
  padding: 16px 18px 6px;
}

.card-desc {
  padding: 0 18px;
  font-size: 14.5px;
  color: var(--color-muted);
  line-height: 1.75;
}

.card-meta {
  padding: 10px 18px 0;
  font-size: 13px;
  color: var(--color-muted);
  font-family: var(--font-mono);
}

.card-link {
  margin: 14px 18px 18px;
  align-self: flex-start;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.card-link:hover,
.card-link:focus-visible {
  border-bottom-color: var(--color-accent);
  text-decoration: none;
}

/* 步骤列表（首页四步 / 指引页四步） */
.step-list {
  display: grid;
  gap: var(--gap-md);
}

.step-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 20px;
  min-width: 0;
}

.step-num,
.step-no {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-accent-dark);
  background-color: var(--color-tag);
  border-radius: var(--radius-sm);
  padding: 2px 9px;
  margin-bottom: 10px;
}

.step-name {
  font-size: 16.5px;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-desc {
  font-size: 14.5px;
  color: var(--color-muted);
  line-height: 1.75;
}

.step-check {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed var(--color-line);
  font-size: 13.5px;
  color: var(--color-muted);
}

.step-facts {
  margin: 12px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--color-line);
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 12px;
  font-size: 13.5px;
}

.step-facts dt {
  color: var(--color-muted);
  font-family: var(--font-mono);
  white-space: nowrap;
}

.step-facts dd {
  margin: 0;
  color: var(--color-text);
}

/* 字段示例（题材频道页） */
.field-sample {
  margin: 18px 0 0;
  display: grid;
  grid-template-columns: minmax(140px, 200px) minmax(0, 1fr);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
  overflow: hidden;
}

.field-name {
  padding: 11px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-line);
  font-family: var(--font-mono);
}

.field-value {
  margin: 0;
  padding: 11px 16px;
  font-size: 14px;
  color: var(--color-muted);
  border-bottom: 1px solid var(--color-line);
}

.field-sample .field-name:last-of-type,
.field-sample .field-value:last-of-type {
  border-bottom: 0;
}

.field-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--color-accent-dark);
  background-color: var(--color-tag);
  border-radius: var(--radius-sm);
  padding: 1px 7px;
  margin-right: 8px;
}

/* 站内栏目索引 */
.index-grid {
  display: grid;
  gap: var(--gap-md);
}

.index-column,
.index-item,
.index-cell {
  min-width: 0;
}

.index-name {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

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

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

.index-link {
  display: inline-block;
  font-size: 16px;
  font-weight: 700;
  color: var(--color-accent);
  text-decoration: none;
}

.index-link:hover,
.index-link:focus-visible {
  text-decoration: underline;
}

.index-desc {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.75;
}

.index-note {
  display: block;
  font-size: 13.5px;
  color: var(--color-muted);
}

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

.site-index-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--color-line);
  font-size: 14.5px;
}

.site-index-item:last-child {
  border-bottom: 0;
}

.site-index-item a {
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
}

.site-index-item a:hover,
.site-index-item a:focus-visible {
  text-decoration: underline;
}

/* 图片与图注 */
.media-caption,
.figure-caption {
  margin-top: 8px;
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.7;
}

.genre-figure,
.section-figure,
.page-media {
  margin: 20px 0 0;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-surface);
}

.genre-figure img,
.section-figure img,
.page-media img {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
}

.genre-figure .figure-caption,
.section-figure .figure-caption,
.page-media .media-caption {
  margin: 0;
  padding: 12px 16px;
  border-top: 1px solid var(--color-line);
  background-color: var(--color-bg);
}

/* FAQ 原生展开收起 */
.faq-list {
  display: grid;
  gap: 10px;
}

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

.faq-item[open] {
  border-color: var(--color-accent);
}

.faq-question {
  cursor: pointer;
  list-style: none;
  padding: 15px 30px 15px 0;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--color-text);
  position: relative;
  line-height: 1.6;
}

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

.faq-question::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 19px;
  color: var(--color-accent);
  line-height: 1;
}

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

.faq-answer {
  padding: 14px 0 16px;
  font-size: 14.5px;
  color: var(--color-muted);
  line-height: 1.8;
  border-top: 1px dashed var(--color-line);
}

/* 整理记录 */
.record-list {
  display: grid;
  gap: 10px;
}

.record-item {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: baseline;
  font-size: 14px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--color-line);
}

.record-item:last-child {
  border-bottom: 0;
}

.record-date {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-accent-dark);
  background-color: var(--color-tag);
  border-radius: var(--radius-sm);
  padding: 1px 8px;
  white-space: nowrap;
}

.record-text {
  color: var(--color-muted);
  flex: 1 1 200px;
  min-width: 0;
}

/* 收录边界双栏 */
.boundary-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap-md);
  margin-top: 18px;
}

.boundary-col {
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 20px;
  min-width: 0;
}

.boundary-col-include {
  border-left: 3px solid var(--color-accent);
}

.boundary-col-exclude {
  border-left: 3px solid var(--color-line);
}

.subsection-title {
  font-size: 15.5px;
  font-weight: 700;
  margin-bottom: 12px;
}

.boundary-list {
  display: grid;
  gap: 9px;
}

.boundary-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  color: var(--color-muted);
  line-height: 1.75;
}

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

.boundary-col-exclude .boundary-list li::before {
  background-color: var(--color-line);
}

/* 缺失处理 / 判断标准清单 */
.missing-list,
.check-list,
.order-list,
.cross-list {
  display: grid;
  gap: var(--gap-sm);
}

.missing-item,
.check-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  min-width: 0;
}

.check-item {
  position: relative;
  padding-left: 40px;
  font-size: 14.5px;
  color: var(--color-text);
  line-height: 1.75;
}

.check-item::before {
  content: "✓";
  position: absolute;
  left: 16px;
  top: 15px;
  font-size: 14px;
  color: var(--color-accent);
  font-weight: 700;
}

.cross-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  min-width: 0;
}

.cross-name {
  font-size: 15.5px;
  font-weight: 700;
  margin-bottom: 6px;
}

.cross-text {
  font-size: 14.5px;
  color: var(--color-muted);
  line-height: 1.75;
}

.order-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 16px 18px 16px 44px;
  position: relative;
  min-width: 0;
}

.order-item::before {
  content: counter(order-step);
  counter-increment: order-step;
  position: absolute;
  left: 14px;
  top: 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-accent-dark);
  background-color: var(--color-tag);
  border-radius: var(--radius-sm);
  padding: 1px 7px;
}

.order-list {
  counter-reset: order-step;
}

.order-name {
  font-size: 15.5px;
  font-weight: 700;
  margin-bottom: 6px;
}

.order-reason {
  font-size: 14.5px;
  color: var(--color-muted);
  line-height: 1.75;
}

/* 专题片单卡片（片单页） */
.collection-card {
  display: flex;
  flex-direction: column;
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-width: 0;
  transition: border-color 0.18s ease;
}

.collection-card:hover {
  border-color: var(--color-accent);
}

.collection-media {
  margin: 0;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background-color: var(--color-tag);
}

.collection-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.collection-content {
  padding: 16px 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.collection-name {
  font-size: 16.5px;
  font-weight: 700;
}

.collection-angle-text,
.collection-basis,
.collection-count {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.75;
}

/* 页内文字块 */
.section-body {
  display: grid;
  gap: 12px;
  max-width: 860px;
}

.section-body p {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.8;
}

/* --------------------------------------------------------------------------
   pages · 首页
   -------------------------------------------------------------------------- */

.hero-section {
  padding: 40px 0 44px;
}

.hero-layout {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 1fr);
  gap: var(--gap-lg);
  align-items: start;
}

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

.hero-kicker {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--color-accent-dark);
  background-color: var(--color-tag);
  border-radius: var(--radius-sm);
  padding: 3px 10px;
  margin-bottom: 14px;
}

.hero-title {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 16px;
  color: var(--color-muted);
  line-height: 1.85;
  max-width: 640px;
}

.hero-media {
  margin: 22px 0 0;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-surface);
}

.hero-media img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.hero-media .media-caption {
  margin: 0;
  padding: 11px 16px;
  border-top: 1px solid var(--color-line);
  background-color: var(--color-bg);
}

.hero-note {
  margin-top: 16px;
  font-size: 14px;
  color: var(--color-muted);
}

.hero-note a {
  font-weight: 600;
}

.hero-entries {
  display: grid;
  gap: var(--gap-md);
  min-width: 0;
}

.entry-block {
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 20px;
  min-width: 0;
  transition: border-color 0.18s ease;
}

.entry-block:hover {
  border-color: var(--color-accent);
}

.entry-title {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.entry-desc {
  font-size: 14.5px;
  color: var(--color-muted);
  line-height: 1.75;
  margin-bottom: 12px;
}

.entry-link {
  display: inline-block;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.entry-link:hover,
.entry-link:focus-visible {
  border-bottom-color: var(--color-accent);
  text-decoration: none;
}

.hero-side-media {
  margin: 0;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-surface);
}

.hero-side-media img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.hero-side-media .media-caption {
  margin: 0;
  padding: 11px 16px;
  border-top: 1px solid var(--color-line);
  background-color: var(--color-bg);
}

/* 首页各 section 容器 */
.channel-overview,
.collection-entry,
.browse-steps,
.field-summary,
.site-index {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.channel-overview {
  padding-top: 44px;
}

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

.browse-steps .step-list {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.summary-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap-md);
}

.summary-column {
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 20px;
  min-width: 0;
}

.column-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 14px;
}

.index-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

/* --------------------------------------------------------------------------
   pages · 内页
   -------------------------------------------------------------------------- */

/* 题材频道页 */
.genre-scope,
.genre-table-section,
.genre-cross,
.genre-sample {
  padding: 36px 0;
  border-top: 1px solid var(--color-line);
}

.genre-scope {
  border-top: 0;
  padding-top: 8px;
}

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

/* 专题片单页 */
.collection-angle,
.collection-list,
.collection-mapping,
.collection-order {
  padding: 36px 0;
  border-top: 1px solid var(--color-line);
}

.collection-angle {
  border-top: 0;
  padding-top: 8px;
}

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

/* 浏览指引页 */
.section-steps,
.section-fallback,
.section-criteria,
.section-index {
  padding: 36px 0;
  border-top: 1px solid var(--color-line);
}

.section-steps {
  border-top: 0;
  padding-top: 8px;
}

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

/* 字段说明页 */
.field-table-section,
.boundary-section,
.missing-section,
.record-section,
.faq-section {
  padding: 36px 0;
  border-top: 1px solid var(--color-line);
}

.field-table-section {
  border-top: 0;
  padding-top: 8px;
}

.field-table tbody th {
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 14px;
}

.record-columns {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--gap-md);
  margin-top: 18px;
}

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

.record-col-text {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.85;
}

.record-col-text p + p {
  margin-top: 12px;
}

.record-col-list {
  background-color: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: 20px;
}

/* 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(--font-mono);
  font-size: 15px;
  color: var(--color-accent-dark);
  background-color: var(--color-tag);
  border-radius: var(--radius-sm);
  padding: 3px 12px;
  display: inline-block;
  margin-bottom: 16px;
}

.error-title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 14px;
}

.error-text {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.8;
}

.error-text + .error-text {
  margin-top: 10px;
}

.error-actions {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  align-items: center;
}

.error-button {
  display: inline-block;
  padding: 12px 22px;
  min-height: 44px;
  background-color: var(--color-accent);
  color: #ffffff;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  line-height: 1.4;
}

.error-button:hover,
.error-button:focus-visible {
  background-color: var(--color-accent-dark);
  color: #ffffff;
  text-decoration: none;
}

.error-link {
  font-size: 15px;
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.error-link:hover,
.error-link:focus-visible {
  border-bottom-color: var(--color-accent);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   responsive
   -------------------------------------------------------------------------- */

@media (max-width: 1024px) {
  .hero-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .hero-title {
    font-size: 30px;
  }

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

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

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

@media (max-width: 768px) {
  .header-inner {
    padding: 12px 18px;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
  }

  .brand {
    flex: 1 1 auto;
  }

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

  .brand-slogan {
    font-size: 12px;
  }

  .nav-toggle {
    display: inline-flex;
    flex: 0 0 auto;
  }

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

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    border-top: 1px solid var(--color-line);
    margin-top: 4px;
  }

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

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

  .nav-link {
    padding: 13px 12px;
    min-height: 48px;
    font-size: 15.5px;
    border-bottom: 0;
    border-left: 3px solid transparent;
  }

  .nav-link:hover,
  .nav-link:focus-visible {
    border-bottom: 0;
    border-left-color: var(--color-line);
  }

  .nav-link.is-current {
    border-bottom: 0;
    border-left-color: var(--color-accent);
  }

  .inner-main {
    padding: 0 18px 44px;
  }

  .fact-bar-text {
    padding: 10px 18px;
    font-size: 13px;
  }

  .hero-section {
    padding: 26px 0 34px;
  }

  .hero-layout {
    padding: 0 18px;
  }

  .hero-title {
    font-size: 25px;
  }

  .hero-lead {
    font-size: 15.5px;
  }

  .channel-overview,
  .collection-entry,
  .browse-steps,
  .field-summary,
  .site-index {
    padding-left: 18px;
    padding-right: 18px;
  }

  .section {
    padding: 32px 0;
  }

  .section-title {
    font-size: 19.5px;
  }

  .page-header {
    padding: 12px 0 22px;
    margin-bottom: 26px;
  }

  .page-title {
    font-size: 23px;
  }

  .page-description {
    font-size: 15px;
  }

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

  .browse-steps .step-list,
  .section-steps .step-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .summary-layout,
  .boundary-columns,
  .record-columns {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

  .field-sample .field-name {
    border-bottom: 0;
    padding-bottom: 2px;
  }

  .field-sample .field-value {
    padding-top: 2px;
  }

  .footer-inner {
    padding: 30px 18px 22px;
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
  }

  .footer-copyright {
    padding: 16px 18px 26px;
  }

  .error-main {
    padding: 40px 18px 60px;
  }

  .error-title {
    font-size: 23px;
  }
}

@media (max-width: 390px) {
  .header-inner {
    padding: 10px 14px;
  }

  .brand-slogan {
    display: none;
  }

  .hero-layout,
  .inner-main,
  .channel-overview,
  .collection-entry,
  .browse-steps,
  .field-summary,
  .site-index {
    padding-left: 14px;
    padding-right: 14px;
  }

  .fact-bar-text,
  .footer-inner,
  .footer-copyright {
    padding-left: 14px;
    padding-right: 14px;
  }

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

  .page-title {
    font-size: 21px;
  }

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

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

  .step-facts {
    grid-template-columns: minmax(0, 1fr);
    gap: 2px 0;
  }

  .step-facts dt {
    margin-top: 6px;
  }
}