/* ==========================================================================
   飘花影院 · 全站样式表
   结构：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base：变量、重置、排版基础
   -------------------------------------------------------------------------- */
:root {
  --ink: #1c2b3a;
  --ink-soft: #3d4f61;
  --ink-mute: #5d6f80;
  --line: #d5dde4;
  --line-soft: #e6ecf1;
  --paper: #f5f6f7;
  --paper-raise: #ffffff;
  --quote-bg: #f4f1e8;
  --accent: #2f6b74;
  --accent-deep: #234f56;
  --accent-soft: #e4eef0;
  --radius: 6px;
  --radius-sm: 4px;
  --shadow-card: 0 1px 2px rgba(28, 43, 58, 0.06);
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "SFMono-Regular", "Menlo", "Consolas", "Courier New", monospace;
  --wrap: 1120px;
  --gap: 28px;
}

*,
*::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: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--ink);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0;
}

p {
  margin: 0;
}

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

figure {
  margin: 0;
}

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

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

a:hover,
a:focus-visible {
  color: var(--accent-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

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

th,
td {
  text-align: left;
  vertical-align: top;
}

caption {
  text-align: left;
}

button {
  font: inherit;
  color: inherit;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------------------
   layout：全站骨架（页头 / 导航 / 主容器 / 面包屑 / 页标题 / 页脚）
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--paper-raise);
  border-bottom: 1px solid var(--line);
}

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

.brand-link {
  flex: 0 0 auto;
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.02em;
  padding: 8px 0;
}

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

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

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

.nav-link {
  display: inline-block;
  padding: 9px 12px;
  font-size: 15px;
  color: var(--ink-soft);
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--accent-deep);
  background: var(--accent-soft);
  text-decoration: none;
}

.nav-link.is-current {
  color: var(--accent-deep);
  font-weight: 700;
  border-bottom: 2px solid var(--accent);
  border-radius: 0;
  padding-bottom: 7px;
}

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

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

.nav-toggle:hover {
  background: var(--accent-soft);
}

.site-main {
  display: block;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px 64px;
}

.home-main {
  padding-top: 0;
}

.inner-main {
  padding-top: 0;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 20px 0 0;
  font-size: 14px;
  color: var(--ink-mute);
}

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

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

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

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

.page-header {
  padding: 22px 0 26px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 34px;
}

.page-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 12px;
}

.page-description {
  max-width: 780px;
  font-size: 15.5px;
  color: var(--ink-soft);
  line-height: 1.85;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--paper-raise);
}

.footer-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 40px 24px 28px;
}

.footer-action {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line-soft);
}

.footer-action-text {
  font-size: 15px;
  color: var(--ink-soft);
  margin: 0;
}

.footer-action-link {
  display: inline-block;
  min-height: 44px;
  line-height: 44px;
  padding: 0 20px;
  background: var(--accent);
  color: #ffffff;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
}

.footer-action-link:hover,
.footer-action-link:focus-visible {
  background: var(--accent-deep);
  color: #ffffff;
  text-decoration: none;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px 32px;
  padding: 26px 0;
}

.footer-group-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 10px;
}

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

.footer-list a {
  font-size: 14px;
  color: var(--ink-mute);
  padding: 3px 0;
  display: inline-block;
}

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

.footer-about {
  font-size: 13.5px;
  color: var(--ink-mute);
  line-height: 1.8;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
  max-width: 900px;
}

.footer-copyright {
  font-size: 13px;
  color: var(--ink-mute);
  padding-top: 10px;
}

/* --------------------------------------------------------------------------
   components：通用区块、表格、卡片、清单、链接、折叠
   -------------------------------------------------------------------------- */
.section {
  padding: 44px 0;
  border-bottom: 1px solid var(--line-soft);
}

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

.section-head {
  margin-bottom: 22px;
}

.section-title,
.section-head h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 10px;
}

.section-intro,
.section-lead {
  max-width: 820px;
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.85;
}

.sub-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 12px;
}

.section-more {
  margin-top: 20px;
}

.more-link {
  display: inline-block;
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
  padding: 6px 0;
  border-bottom: 1px solid var(--accent);
}

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

/* 表格通用：外层横向滚动容器 */
.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper-raise);
}

.table-caption {
  padding: 12px 16px 0;
  font-size: 13.5px;
  color: var(--ink-mute);
}

.catalog-table,
.data-table,
.fields-table {
  min-width: 620px;
  font-size: 14.5px;
}

.catalog-table th,
.catalog-table td,
.data-table th,
.data-table td,
.fields-table th,
.fields-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--line-soft);
  line-height: 1.7;
}

.catalog-table thead th,
.data-table thead th,
.fields-table thead th {
  background: var(--quote-bg);
  color: var(--ink);
  font-size: 13.5px;
  font-weight: 700;
  white-space: nowrap;
  border-bottom: 1px solid var(--line);
}

.catalog-table tbody th,
.data-table tbody th {
  font-weight: 700;
  color: var(--ink);
  white-space: nowrap;
}

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

.catalog-table tbody tr:hover,
.data-table tbody tr:hover,
.fields-table tbody tr:hover {
  background: #fafbfc;
}

/* 收录边界说明块（首页） */
.boundary-block {
  background: var(--quote-bg);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 16px 18px;
  margin-bottom: 16px;
}

.boundary-label {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}

.boundary-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.boundary-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.boundary-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 11px;
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
}

.boundary-more {
  margin-top: 4px;
}

/* 编号步骤清单（首页与查阅路径页共用基础，作用域分离） */
.step-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--line);
}

.step-item {
  display: flex;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}

.step-index {
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  line-height: 34px;
  text-align: center;
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-size: 15px;
  font-weight: 700;
  border-radius: 50%;
}

.step-body {
  flex: 1 1 auto;
  min-width: 0;
}

.step-title {
  font-size: 16.5px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 6px;
}

.step-text {
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.8;
}

/* 时间记录清单（首页摘要 + 片单页共用基础） */
.update-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.update-item {
  display: flex;
  gap: 18px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
}

.update-date {
  flex: 0 0 108px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--ink-mute);
  padding-top: 2px;
}

.update-text {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.8;
}

/* 折叠问答 */
.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper-raise);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-question {
  cursor: pointer;
  padding: 15px 18px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  list-style: none;
  position: relative;
  padding-right: 46px;
}

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

.faq-question::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  font-weight: 400;
  color: var(--accent);
  line-height: 1;
}

.faq-item[open] .faq-question::after {
  content: "\2212";
}

.faq-item[open] .faq-question {
  border-bottom: 1px solid var(--line-soft);
}

.faq-answer {
  padding: 14px 18px 18px;
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.85;
  margin: 0;
}

/* 图片容器统一约束 */
.hero-figure,
.card-figure,
.channel-figure,
.playlist-figure,
.fields-figure,
.guide-figure,
.section-figure {
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.hero-figure img,
.card-figure img,
.channel-figure img,
.playlist-figure img,
.fields-figure img,
.guide-figure img,
.section-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: #e9edf0;
}

figcaption,
.playlist-caption,
.figure-caption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--ink-mute);
  line-height: 1.7;
  border-top: 1px solid var(--line-soft);
}

/* --------------------------------------------------------------------------
   pages：首页
   -------------------------------------------------------------------------- */
.hero-section {
  padding: 42px 0 34px;
  border-bottom: 1px solid var(--line);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 420px);
  gap: 40px;
  align-items: center;
}

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

.hero-eyebrow {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--accent-deep);
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.hero-title {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.42;
  color: var(--ink);
  margin-bottom: 16px;
}

.hero-desc {
  font-size: 16px;
  color: var(--ink-soft);
  line-height: 1.9;
  max-width: 620px;
}

.hero-note {
  margin-top: 14px;
  padding: 12px 16px;
  background: var(--quote-bg);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.hero-figure {
  aspect-ratio: 4 / 3;
  display: flex;
  flex-direction: column;
}

.hero-figure img {
  flex: 1 1 auto;
  min-height: 0;
}

.hero-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 30px;
}

.step-entry {
  display: flex;
  align-items: center;
  min-height: 52px;
  padding: 12px 18px;
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  box-shadow: var(--shadow-card);
}

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

/* 首页：题材频道目录 */
.channel-catalog .table-scroll {
  margin-top: 4px;
}

/* 首页：专题片单速览 */
.playlist-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--gap);
}

.playlist-card {
  display: flex;
  flex-direction: column;
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 0 18px;
  box-shadow: var(--shadow-card);
}

.playlist-card .card-figure {
  border: 0;
  border-bottom: 1px solid var(--line-soft);
  border-radius: var(--radius) var(--radius) 0 0;
  aspect-ratio: 16 / 10;
}

.playlist-card .card-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  margin: 16px 18px 8px;
}

.playlist-card .card-scope {
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.8;
  margin: 0 18px 10px;
}

.playlist-card .card-sample {
  font-size: 14px;
  color: var(--ink-mute);
  line-height: 1.8;
  margin: 0 18px 16px;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
}

.playlist-card .card-link {
  margin: auto 18px 0;
  align-self: flex-start;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
  padding-bottom: 2px;
}

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

/* 首页：字段与收录边界摘要 */
.fields-columns {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  gap: var(--gap);
  align-items: start;
}

.fields-table-col {
  min-width: 0;
}

.fields-boundary-col {
  min-width: 0;
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
}

.fields-boundary-col .sub-title {
  margin-bottom: 14px;
}

/* 首页：查阅路径三步概览 */
.path-overview .step-list {
  margin-top: 4px;
}

/* 首页：收录范围调整记录摘要 */
.updates-preview .update-list {
  margin-top: 4px;
}

/* --------------------------------------------------------------------------
   pages：内页通用布局
   -------------------------------------------------------------------------- */
.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
}

.page-layout > section {
  min-width: 0;
}

.page-layout .section + .section {
  margin-top: 34px;
}

/* 频道分类页 */
.channel-overview {
  padding-bottom: 34px;
  border-bottom: 1px solid var(--line-soft);
}

.channel-overview .table-scroll {
  margin-top: 18px;
}

.channel-basis {
  padding: 34px 0;
  border-bottom: 1px solid var(--line-soft);
}

.basis-body p {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.9;
  margin-bottom: 14px;
  max-width: 860px;
}

.basis-body p:last-child {
  margin-bottom: 0;
}

.channel-playlists {
  padding: 34px 0;
  border-bottom: 1px solid var(--line-soft);
}

.channel-group-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap);
  margin-top: 22px;
}

.channel-group {
  display: flex;
  flex-direction: column;
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-card);
}

.channel-group-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 14px;
}

.channel-figure {
  aspect-ratio: 16 / 9;
  display: flex;
  flex-direction: column;
  margin-bottom: 14px;
}

.channel-figure img {
  flex: 1 1 auto;
  min-height: 0;
}

.channel-group-text {
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.85;
  margin-bottom: 12px;
}

.channel-entry-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}

.channel-entry-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.channel-entry-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 11px;
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
}

.channel-cross {
  padding: 34px 0;
  border-bottom: 1px solid var(--line-soft);
}

.cross-body > p {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.9;
  margin-bottom: 16px;
  max-width: 860px;
}

.cross-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 24px;
}

.cross-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.cross-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 11px;
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
}

.channel-next {
  padding: 34px 0 0;
}

.next-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 20px;
}

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

.next-step a {
  display: flex;
  align-items: center;
  min-height: 56px;
  padding: 12px 16px;
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.next-step a:hover,
.next-step a:focus-visible {
  color: var(--accent-deep);
  border-color: var(--accent);
  text-decoration: none;
}

.channel-next-note {
  margin-top: 20px;
  font-size: 14.5px;
  color: var(--ink-soft);
}

/* 专题片单页 */
.playlist-scope {
  padding-bottom: 34px;
  border-bottom: 1px solid var(--line-soft);
}

.playlist-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: 22px;
}

.playlist-item {
  min-width: 0;
}

.playlist-row {
  display: grid;
  grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
  gap: 24px;
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-card);
}

.playlist-figure {
  aspect-ratio: 16 / 10;
  display: flex;
  flex-direction: column;
}

.playlist-figure img {
  flex: 1 1 auto;
  min-height: 0;
}

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

.playlist-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 10px;
}

.playlist-scope-text {
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.85;
}

.playlist-standard {
  padding: 34px 0;
  border-bottom: 1px solid var(--line-soft);
}

.standard-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap);
  margin-top: 22px;
}

.standard-column {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper-raise);
  padding: 20px;
}

.standard-include {
  border-top: 3px solid var(--accent);
}

.standard-exclude {
  border-top: 3px solid var(--ink-mute);
}

.standard-heading {
  font-size: 16.5px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 14px;
}

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

.standard-item {
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.standard-item::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 11px;
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
}

.standard-exclude .standard-item::before {
  background: var(--ink-mute);
}

.playlist-entry {
  padding: 34px 0;
  border-bottom: 1px solid var(--line-soft);
}

.entry-groups {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap);
  margin-top: 22px;
}

.entry-group {
  min-width: 0;
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-card);
}

.entry-group-name {
  font-size: 16.5px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-soft);
}

.entry-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
}

.entry-item {
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.entry-item::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 11px;
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
}

.entry-channel {
  font-size: 14px;
  color: var(--ink-mute);
  padding-top: 10px;
  border-top: 1px dashed var(--line);
}

.playlist-order {
  padding: 34px 0;
  border-bottom: 1px solid var(--line-soft);
}

.order-list {
  display: flex;
  flex-direction: column;
  counter-reset: order;
  border-top: 1px solid var(--line);
  margin-top: 18px;
}

.order-item {
  counter-increment: order;
  position: relative;
  padding: 14px 0 14px 40px;
  border-bottom: 1px solid var(--line-soft);
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.order-item::before {
  content: counter(order);
  position: absolute;
  left: 0;
  top: 14px;
  width: 26px;
  height: 26px;
  line-height: 26px;
  text-align: center;
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-size: 13.5px;
  font-weight: 700;
  border-radius: 50%;
}

.order-more {
  margin-top: 18px;
}

.playlist-update {
  padding: 34px 0 0;
}

.playlist-update .update-list {
  margin-top: 18px;
}

.playlist-update .update-item {
  flex-direction: column;
  gap: 6px;
}

.playlist-update .update-item .update-date {
  flex: 0 0 auto;
}

.update-more {
  margin-top: 18px;
}

/* 条目字段说明页 */
.fields-overview {
  padding-bottom: 34px;
  border-bottom: 1px solid var(--line-soft);
}

.fields-overview-body {
  display: grid;
  grid-template-columns: minmax(0, 380px) minmax(0, 1fr);
  gap: var(--gap);
  align-items: start;
  margin-top: 18px;
}

.fields-overview-body .fields-figure {
  aspect-ratio: 4 / 3;
  display: flex;
  flex-direction: column;
}

.fields-overview-body .fields-figure img {
  flex: 1 1 auto;
  min-height: 0;
}

.fields-overview-text {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.9;
}

.fields-table-section {
  padding: 34px 0;
  border-bottom: 1px solid var(--line-soft);
}

.fields-table-section .table-scroll {
  margin-top: 18px;
}

.fields-table-section .fields-table {
  min-width: 660px;
}

.fields-table-section .fields-table td:first-child {
  font-weight: 700;
  color: var(--ink);
  white-space: nowrap;
}

.fields-value-section {
  padding: 34px 0;
  border-bottom: 1px solid var(--line-soft);
}

.fields-value-list {
  margin: 18px 0 0;
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.fields-value-item {
  display: grid;
  grid-template-columns: minmax(0, 180px) minmax(0, 1fr);
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
}

.fields-value-item dt {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.fields-value-item dd {
  margin: 0;
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.85;
  min-width: 0;
}

.fields-boundary-section {
  padding: 34px 0;
  border-bottom: 1px solid var(--line-soft);
}

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

.boundary-column {
  min-width: 0;
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
}

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

.boundary-exclude {
  border-top: 3px solid var(--ink-mute);
}

.boundary-title {
  font-size: 16.5px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 14px;
}

.boundary-exclude .boundary-list li::before {
  background: var(--ink-mute);
}

.fields-misread-section {
  padding: 34px 0;
  border-bottom: 1px solid var(--line-soft);
}

.misread-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--gap);
  margin-top: 20px;
}

.misread-item {
  min-width: 0;
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 18px 20px;
}

.misread-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}

.misread-item p {
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.85;
}

.fields-related {
  padding: 34px 0 0;
}

.fields-related-text {
  font-size: 15px;
  color: var(--ink-soft);
  line-height: 1.85;
  max-width: 820px;
  margin-bottom: 16px;
}

.fields-related-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 24px;
}

.fields-related-list li {
  min-width: 0;
}

.fields-related-list a {
  display: block;
  padding: 12px 16px;
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink);
}

.fields-related-list a:hover,
.fields-related-list a:focus-visible {
  color: var(--accent-deep);
  border-color: var(--accent);
  text-decoration: none;
}

/* 查阅路径指引页 */
.guide-figure {
  aspect-ratio: 21 / 9;
  display: flex;
  flex-direction: column;
  margin-bottom: 34px;
}

.guide-figure img {
  flex: 1 1 auto;
  min-height: 0;
}

.guide-steps {
  padding-bottom: 34px;
  border-bottom: 1px solid var(--line-soft);
}

.guide-steps h2,
.guide-points h2,
.guide-routes h2,
.guide-faq h2,
.guide-aside h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 10px;
}

.guide-steps .step-list {
  margin-top: 20px;
}

.guide-steps .step-item {
  align-items: flex-start;
  flex-wrap: wrap;
}

.guide-steps .step-name {
  flex: 1 1 220px;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  margin: 0;
}

.guide-steps .step-desc {
  flex: 1 1 100%;
  margin: 8px 0 0 52px;
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.85;
}

.guide-points {
  padding: 34px 0;
  border-bottom: 1px solid var(--line-soft);
}

.point-block {
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  margin-top: 16px;
}

.point-title {
  font-size: 16.5px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 12px;
}

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

.point-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.8;
}

.point-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 11px;
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
}

.guide-routes {
  padding: 34px 0;
  border-bottom: 1px solid var(--line-soft);
}

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

.route-item {
  min-width: 0;
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-card);
}

.route-name {
  font-size: 16.5px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}

.route-desc {
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.8;
  margin-bottom: 12px;
}

.route-steps {
  display: flex;
  flex-direction: column;
  gap: 8px;
  counter-reset: route;
  border-top: 1px dashed var(--line);
  padding-top: 12px;
}

.route-steps li {
  counter-increment: route;
  position: relative;
  padding-left: 26px;
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
}

.route-steps li::before {
  content: counter(route);
  position: absolute;
  left: 0;
  top: 3px;
  width: 18px;
  height: 18px;
  line-height: 18px;
  text-align: center;
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-size: 12px;
  font-weight: 700;
  border-radius: 50%;
}

.guide-faq {
  padding: 34px 0;
  border-bottom: 1px solid var(--line-soft);
}

.guide-faq .faq-item:first-of-type {
  margin-top: 20px;
}

.guide-aside {
  padding: 34px 0 0;
}

.aside-link-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 24px;
  margin-top: 16px;
}

.aside-link-list li {
  min-width: 0;
}

.aside-link-list a {
  display: block;
  padding: 12px 16px;
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink);
}

.aside-link-list a:hover,
.aside-link-list a:focus-visible {
  color: var(--accent-deep);
  border-color: var(--accent);
  text-decoration: none;
}

/* 收录范围调整记录页 */
.section-records {
  padding-top: 0;
}

.record-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
  margin-top: 18px;
}

.record-item {
  display: grid;
  grid-template-columns: minmax(0, 130px) minmax(0, 1fr);
  gap: 6px 22px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}

.record-date {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--ink-mute);
  padding-top: 2px;
}

.record-target {
  font-size: 15.5px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.7;
}

.record-summary {
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.85;
}

.reason-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 18px;
}

.reason-item {
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 18px 20px;
}

.reason-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}

.reason-body {
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.85;
  margin-bottom: 8px;
}

.reason-impact {
  font-size: 14px;
  color: var(--ink-mute);
  line-height: 1.8;
  padding-top: 8px;
  border-top: 1px dashed var(--line);
}

.section-scope .section-figure {
  aspect-ratio: 21 / 9;
  display: flex;
  flex-direction: column;
  margin: 18px 0 22px;
}

.section-scope .section-figure img {
  flex: 1 1 auto;
  min-height: 0;
}

.scope-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.scope-item {
  min-width: 0;
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
}

.scope-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}

.scope-body {
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.85;
  margin-bottom: 10px;
}

.scope-link {
  font-size: 14px;
  padding-top: 10px;
  border-top: 1px dashed var(--line);
}

.policy-block {
  background: var(--quote-bg);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 18px 20px;
  margin-top: 16px;
}

.policy-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}

.policy-body {
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.85;
  margin-bottom: 8px;
}

.policy-body:last-child {
  margin-bottom: 0;
}

.related-nav {
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.related-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 24px;
}

.related-item {
  min-width: 0;
}

.related-item a {
  display: block;
  padding: 12px 16px;
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink);
}

.related-item a:hover,
.related-item a:focus-visible {
  color: var(--accent-deep);
  border-color: var(--accent);
  text-decoration: none;
}

/* 404 页 */
.error-main {
  padding-top: 56px;
}

.error-block {
  max-width: 720px;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--line-soft);
}

.error-title {
  font-size: 30px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 16px;
}

.error-text {
  font-size: 15.5px;
  color: var(--ink-soft);
  line-height: 1.9;
  margin-bottom: 12px;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 22px;
}

.error-button {
  display: inline-block;
  min-height: 46px;
  line-height: 46px;
  padding: 0 24px;
  background: var(--accent);
  color: #ffffff;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
}

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

.error-link {
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
  padding-bottom: 2px;
}

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

.error-hints {
  padding: 34px 0 0;
}

.error-hints-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 16px;
}

.error-hints-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 24px;
}

.error-hints-list li {
  min-width: 0;
}

.error-hints-list a {
  display: block;
  padding: 12px 16px;
  background: var(--paper-raise);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink);
}

.error-hints-list a:hover,
.error-hints-list a:focus-visible {
  color: var(--accent-deep);
  border-color: var(--accent);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   responsive：统一断点
   -------------------------------------------------------------------------- */
@media (max-width: 900px) {
  .header-inner {
    min-height: 60px;
    padding: 0 18px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    margin-left: 0;
    background: var(--paper-raise);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 8px 16px rgba(28, 43, 58, 0.08);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 18px 16px;
  }

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

  .nav-link {
    display: block;
    padding: 13px 4px;
    font-size: 15.5px;
    border-bottom: 1px solid var(--line-soft);
    border-radius: 0;
  }

  .nav-link.is-current {
    border-bottom: 1px solid var(--line-soft);
    padding-bottom: 13px;
    box-shadow: inset 3px 0 0 var(--accent);
    padding-left: 12px;
  }

  .site-main {
    padding: 0 18px 52px;
  }

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

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

  .hero-figure {
    aspect-ratio: 16 / 9;
  }

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

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

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

  .channel-group-grid,
  .standard-columns,
  .entry-groups,
  .boundary-columns,
  .misread-list,
  .route-columns,
  .scope-list,
  .related-list,
  .aside-link-list,
  .fields-related-list,
  .error-hints-list {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

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

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

  .fields-value-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .record-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .record-date {
    grid-row: auto;
  }

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

  .update-item {
    flex-direction: column;
    gap: 4px;
  }

  .update-date {
    flex: 0 0 auto;
  }

  .guide-steps .step-desc {
    margin-left: 0;
  }
}

@media (max-width: 560px) {
  body {
    font-size: 15.5px;
  }

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

  .site-main {
    padding: 0 14px 44px;
  }

  .footer-inner {
    padding: 32px 14px 24px;
  }

  .page-header {
    padding: 18px 0 20px;
    margin-bottom: 26px;
  }

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

  .section {
    padding: 34px 0;
  }

  .section-title,
  .section-head h2,
  .guide-steps h2,
  .guide-points h2,
  .guide-routes h2,
  .guide-faq h2,
  .guide-aside h2 {
    font-size: 19.5px;
  }

  .hero-section {
    padding: 30px 0 26px;
  }

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

  .hero-desc {
    font-size: 15px;
  }

  .catalog-table,
  .data-table,
  .fields-table,
  .fields-table-section .fields-table {
    min-width: 560px;
  }

  .step-item {
    gap: 14px;
  }

  .step-index {
    width: 30px;
    height: 30px;
    line-height: 30px;
    font-size: 14px;
  }

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

  .error-main {
    padding-top: 40px;
  }
}