/* ==========================================================================
   麻花影院 · 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base：变量、重置、排版基础
   -------------------------------------------------------------------------- */

:root {
  --color-bg: #f5f4f0;
  --color-ink: #16181a;
  --color-muted: #5c6166;
  --color-line: #d5d7d2;
  --color-panel: #e8e6df;
  --color-ok: #2f7d5b;
  --color-warn: #b4552f;
  --color-white: #ffffff;

  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Noto Sans Mono CJK SC", monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;

  --radius: 4px;
  --width-page: 1160px;
  --width-read: 68ch;

  --space-section: 56px;
  --space-module: 24px;
}

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

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

body {
  margin: 0;
  background-color: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.8;
}

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

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

a:hover,
a:focus-visible {
  color: var(--color-ok);
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.4;
}

h2 {
  font-size: 1.25rem;
}

h3 {
  font-size: 1.05rem;
}

p {
  margin: 0 0 1.2em;
}

p:last-child {
  margin-bottom: 0;
}

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

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

button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

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

.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：站点骨架（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-color: var(--color-bg);
  border-bottom: 1px solid var(--color-line);
}

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

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-ink);
}

.brand-mark {
  display: inline-block;
  width: 12px;
  height: 12px;
  background-color: var(--color-ok);
  border-radius: 2px;
}

.brand-name {
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 44px;
  height: 44px;
  margin-left: auto;
  padding: 10px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background-color: var(--color-white);
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-ink);
}

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

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

.nav-item {
  position: relative;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-ink);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-ok);
}

.nav-link.is-current {
  color: var(--color-ok);
  font-weight: 600;
  border-bottom-color: var(--color-ok);
}

.nav-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 168px;
  padding: 6px;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  box-shadow: 0 4px 12px rgba(22, 24, 26, 0.08);
  display: none;
}

.nav-item-has-menu:hover .nav-menu,
.nav-item-has-menu:focus-within .nav-menu {
  display: block;
}

.nav-menu a {
  display: block;
  padding: 8px 10px;
  font-size: 0.88rem;
  border-radius: 2px;
}

.nav-menu a:hover,
.nav-menu a:focus-visible {
  background-color: var(--color-panel);
  color: var(--color-ok);
}

.site-main {
  display: block;
}

.inner-main {
  max-width: var(--width-page);
  margin: 0 auto;
  padding: 28px 24px var(--space-section);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--color-muted);
}

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

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

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

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

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.breadcrumb-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  color: var(--color-line);
}

.page-header {
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-line);
}

.page-title {
  font-size: clamp(1.6rem, 3.4vw, 2.25rem);
  font-weight: 600;
  color: var(--color-ink);
  max-width: 34ch;
}

/* 页脚 */
.site-footer {
  margin-top: var(--space-section);
  border-top: 1px solid var(--color-line);
  background-color: var(--color-panel);
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(240px, 1fr) minmax(0, 1.6fr);
  gap: 40px;
  max-width: var(--width-page);
  margin: 0 auto;
  padding: 40px 24px 24px;
}

.footer-name {
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
}

.footer-desc {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-muted);
  max-width: 40ch;
}

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

.footer-col-title {
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--color-muted);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-col a {
  display: inline-block;
  padding: 3px 0;
  font-size: 0.9rem;
  color: var(--color-ink);
}

.footer-col a:hover,
.footer-col a:focus-visible {
  color: var(--color-ok);
}

.footer-note {
  max-width: var(--width-page);
  margin: 0 auto;
  padding: 0 24px 16px;
}

.footer-note p {
  margin: 0;
  padding-top: 16px;
  border-top: 1px solid var(--color-line);
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  justify-content: space-between;
  max-width: var(--width-page);
  margin: 0 auto;
  padding: 12px 24px 24px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-muted);
}

.footer-bottom p {
  margin: 0;
}

/* --------------------------------------------------------------------------
   components：通用组件
   -------------------------------------------------------------------------- */

/* 眉题与导语 */
.eyebrow,
.page-eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--color-muted);
}

.page-lead,
.page-lede {
  max-width: var(--width-read);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-ink);
}

/* 状态标签与标签 */
.status-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.tag,
.status-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--color-muted);
  background-color: var(--color-panel);
  border: 1px solid var(--color-line);
  border-radius: 2px;
  white-space: nowrap;
}

.status-tag {
  color: var(--color-ink);
  background-color: var(--color-white);
}

.dot,
.status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--color-muted);
  flex-shrink: 0;
}

.dot-ok,
.status-dot-ok,
.status-dot--ok {
  background-color: var(--color-ok);
}

.dot-warn,
.status-dot-warn {
  background-color: var(--color-warn);
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 18px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  border-radius: var(--radius);
  border: 1px solid var(--color-ink);
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.btn-primary {
  background-color: var(--color-ink);
  color: var(--color-bg);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: var(--color-ok);
  border-color: var(--color-ok);
  color: var(--color-white);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-ink);
  border-color: var(--color-line);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
  border-color: var(--color-ok);
  color: var(--color-ok);
}

/* 区块标题组合 */
.section-head {
  margin-bottom: 24px;
}

.section-head h2 {
  margin-bottom: 8px;
}

.section-desc,
.section-intro,
.section-lead,
.section-lede {
  max-width: var(--width-read);
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.section-more {
  margin: 20px 0 0;
  font-family: var(--font-mono);
  font-size: 0.88rem;
}

.section-more a::after {
  content: " →";
  color: var(--color-ok);
}

.section-note {
  margin-top: 18px;
  font-size: 0.88rem;
  color: var(--color-muted);
}

/* 图片容器 */
.media-figure,
.featured-figure,
.feature-figure,
.topic-figure,
.collection-figure,
.hero-figure,
.prep-figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background-color: var(--color-panel);
}

.media-figure img,
.featured-figure img,
.feature-figure img,
.topic-figure img,
.collection-figure img,
.hero-figure img,
.prep-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-figure figcaption,
.feature-caption,
.collection-figure figcaption,
.hero-figure figcaption,
.prep-figure figcaption {
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--color-muted);
  border-top: 1px solid var(--color-line);
  background-color: var(--color-white);
}

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

.field-table {
  min-width: 520px;
  font-size: 0.9rem;
}

.field-table thead th {
  padding: 10px 14px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--color-muted);
  background-color: var(--color-panel);
  border-bottom: 1px solid var(--color-line);
}

.field-table tbody th {
  padding: 12px 14px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--color-ink);
  vertical-align: top;
  white-space: nowrap;
}

.field-table tbody td {
  padding: 12px 14px;
  vertical-align: top;
  line-height: 1.7;
  color: var(--color-ink);
  border-top: 1px solid var(--color-line);
}

.field-table tbody tr:nth-child(even) td,
.field-table tbody tr:nth-child(even) th {
  background-color: #f0eee8;
}

/* 折叠问答 */
.faq-item {
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background-color: var(--color-white);
}

.faq-item + .faq-item {
  margin-top: 10px;
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 44px;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  flex-shrink: 0;
  font-size: 1.1rem;
  color: var(--color-ok);
  transition: transform 0.15s ease;
}

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

.faq-answer {
  padding: 0 16px 16px;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--color-muted);
}

.faq-answer p {
  margin: 0 0 0.8em;
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

/* 归档链接组 */
.archive-links {
  margin-top: 24px;
}

.archive-title {
  margin-bottom: 10px;
  font-size: 0.95rem;
}

.archive-list,
.archive-links ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.archive-list a,
.archive-links ul a {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-line);
}

.archive-list a:hover,
.archive-links ul a:hover,
.archive-list a:focus-visible,
.archive-links ul a:focus-visible {
  color: var(--color-ok);
  border-bottom-color: var(--color-ok);
}

/* 相关任务带 */
.task-band {
  margin-top: var(--space-section);
  padding-top: 24px;
  border-top: 1px solid var(--color-line);
}

.task-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.task-cell,
.task-card,
.task-item {
  padding: 16px;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.task-text,
.task-desc {
  margin: 0 0 10px;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.task-link,
.task-cell a,
.task-card a,
.task-item a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--color-ok);
}

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

.task-title {
  margin-bottom: 16px;
  font-size: 1.05rem;
}

.task-band-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.task-band-item {
  padding: 16px;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.task-band-desc {
  margin: 0 0 10px;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-muted);
}

/* 通用内容区块间距 */
.section,
.section-block,
.content-section,
.issue-types,
.feedback-prep,
.process-flow,
.scope-note,
.check-list-block,
.error-table-block,
.faq-block,
.prep-flow {
  margin-bottom: var(--space-section);
}

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

/* --------------------------------------------------------------------------
   pages：首页
   -------------------------------------------------------------------------- */

/* 状态条 */
.status-bar {
  border-bottom: 1px solid var(--color-line);
  background-color: var(--color-panel);
}

.status-bar-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 20px;
  max-width: var(--width-page);
  margin: 0 auto;
  padding: 8px 24px;
}

.status-item {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--color-muted);
}

.status-item + .status-item {
  padding-left: 20px;
  border-left: 1px solid var(--color-line);
}

/* 首页主容器 */
.home-main {
  max-width: var(--width-page);
  margin: 0 auto;
  padding: 32px 24px var(--space-section);
}

/* 双通道首屏 */
.hero-section {
  margin-bottom: var(--space-section);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 32px;
  align-items: stretch;
}

.hero-intro {
  padding: 28px;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.hero-intro h1 {
  margin: 0 0 14px;
  font-size: clamp(1.6rem, 3.4vw, 2.25rem);
  font-weight: 600;
  max-width: 22ch;
}

.hero-lead {
  max-width: 42ch;
  margin-bottom: 16px;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--color-muted);
}

.hero-points {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 22px;
}

.hero-points li {
  position: relative;
  padding-left: 16px;
  font-size: 0.9rem;
  line-height: 1.7;
}

.hero-points li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--color-ok);
  font-family: var(--font-mono);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-quick {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.hero-figure {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  min-height: 180px;
}

.hero-figure img {
  flex: 1 1 auto;
  aspect-ratio: 16 / 9;
}

.terminal-block {
  padding: 16px 18px 18px;
  background-color: var(--color-ink);
  border-left: 3px solid var(--color-ok);
  border-radius: var(--radius);
  color: #e8e6df;
}

.terminal-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: #a9ada8;
}

.terminal-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.terminal-list li {
  font-size: 0.88rem;
}

.terminal-list a {
  display: inline-block;
  padding: 4px 0;
  font-family: var(--font-mono);
  color: #e8e6df;
}

.terminal-list a::before {
  content: "$ ";
  color: var(--color-ok);
}

.terminal-list a:hover,
.terminal-list a:focus-visible {
  color: #7fc4a2;
}

/* 精选条目混合列表 */
.featured-section {
  margin-bottom: var(--space-section);
}

.featured-list {
  border-top: 1px solid var(--color-line);
}

.featured-row {
  padding: 14px 0 14px 14px;
  border-bottom: 1px solid var(--color-line);
  border-left: 2px solid transparent;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.featured-row:hover,
.featured-row:focus-within {
  border-left-color: var(--color-ok);
  background-color: rgba(232, 230, 223, 0.5);
}

.featured-row-lead {
  display: grid;
  grid-template-columns: minmax(0, 260px) minmax(0, 1fr);
  gap: 20px;
  align-items: start;
  padding-top: 18px;
}

.featured-figure {
  aspect-ratio: 16 / 10;
}

.featured-title {
  margin: 0 0 6px;
  font-size: 1rem;
}

.featured-title a {
  color: var(--color-ink);
}

.featured-title a:hover,
.featured-title a:focus-visible {
  color: var(--color-ok);
}

.featured-reason {
  margin: 0 0 8px;
  max-width: var(--width-read);
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.featured-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
}

.channel-link {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--color-muted);
  border-bottom: 1px dashed var(--color-line);
}

.channel-link:hover,
.channel-link:focus-visible {
  color: var(--color-ok);
  border-bottom-color: var(--color-ok);
}

/* 栏目总览面板 */
.panel-section {
  margin-bottom: var(--space-section);
}

.panel-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--color-line);
  border-left: 1px solid var(--color-line);
}

.panel-cell {
  display: flex;
  flex-direction: column;
  padding: 18px;
  background-color: var(--color-white);
  border-right: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.panel-title {
  margin: 0 0 8px;
  font-size: 1rem;
}

.panel-text {
  flex: 1 1 auto;
  margin: 0 0 12px;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.panel-link {
  font-family: var(--font-mono);
  font-size: 0.84rem;
  color: var(--color-ok);
}

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

/* 编目顺序带 */
.stage-section {
  margin-bottom: var(--space-section);
}

.stage-track {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.stage-section .stage-item {
  position: relative;
  padding: 16px;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.stage-num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--color-ok);
}

.stage-title {
  margin: 0 0 6px;
  font-size: 0.98rem;
}

.stage-text {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--color-muted);
}

/* 专题片单预览 */
.topic-section {
  margin-bottom: var(--space-section);
}

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

.topic-card {
  display: flex;
  flex-direction: column;
  padding: 18px;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.topic-figure {
  margin-bottom: 14px;
  aspect-ratio: 16 / 9;
}

.topic-title {
  margin: 0 0 6px;
  font-size: 1.05rem;
}

.topic-title a {
  color: var(--color-ink);
}

.topic-title a:hover,
.topic-title a:focus-visible {
  color: var(--color-ok);
}

.topic-scope {
  margin: 0 0 12px;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.topic-list {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
  padding-left: 0;
  counter-reset: topic-item;
}

.topic-list li {
  position: relative;
  padding-left: 26px;
  font-size: 0.88rem;
  line-height: 1.7;
  counter-increment: topic-item;
}

.topic-list li::before {
  content: counter(topic-item, decimal-leading-zero);
  position: absolute;
  left: 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-muted);
}

.topic-link {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--color-ok);
}

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

/* 观看准备与入口核验 */
.prepare-section {
  margin-bottom: var(--space-section);
}

.prepare-columns {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.sub-title {
  margin: 0 0 14px;
  font-size: 1rem;
}

.prepare-steps .step-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  counter-reset: prep-step;
}

.prepare-steps .step-item {
  position: relative;
  padding: 10px 12px 10px 44px;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  font-size: 0.9rem;
  line-height: 1.7;
  counter-increment: prep-step;
}

.prepare-steps .step-num {
  position: absolute;
  left: 12px;
  top: 10px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-ok);
}

.prepare-anomaly {
  padding: 18px;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.anomaly-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}

.anomaly-list li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.anomaly-list .dot {
  position: relative;
  top: -2px;
}

/* 常见问题摘要 */
.faq-section {
  margin-bottom: var(--space-section);
}

.faq-list {
  max-width: 900px;
}

/* --------------------------------------------------------------------------
   pages：内页通用（精选、编目双栏）
   -------------------------------------------------------------------------- */

.page-head {
  margin-bottom: 28px;
}

.page-title-block {
  display: flex;
  flex-direction: column;
}

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 272px;
  gap: 32px;
  align-items: start;
}

.layout-main,
.page-primary {
  min-width: 0;
}

.layout-aside,
.page-aside {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
}

.aside-block {
  padding: 16px;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.aside-title {
  margin: 0 0 10px;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
}

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

.aside-list li {
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.aside-links a {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--color-ink);
}

.aside-links a:hover,
.aside-links a:focus-visible {
  color: var(--color-ok);
}

.aside-toc {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.aside-toc a {
  display: inline-block;
  padding: 3px 0;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--color-ink);
}

.aside-toc a:hover,
.aside-toc a:focus-visible {
  color: var(--color-ok);
}

/* --------------------------------------------------------------------------
   pages：精选陈列
   -------------------------------------------------------------------------- */

.criteria-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 16px;
}

.criteria-list li {
  position: relative;
  padding-left: 34px;
  font-size: 0.9rem;
  line-height: 1.7;
}

.criteria-num {
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-ok);
}

.feature-item {
  display: grid;
  grid-template-columns: minmax(0, 280px) minmax(0, 1fr);
  gap: 20px;
  align-items: start;
  margin: 20px 0 24px;
  padding: 16px;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.feature-figure {
  aspect-ratio: 16 / 10;
}

.feature-body h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.feature-reason {
  margin: 0 0 10px;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--color-muted);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 10px;
}

.feature-channel {
  margin: 0;
  font-size: 0.86rem;
}

.compact-list {
  border-top: 1px solid var(--color-line);
}

.compact-item {
  padding: 14px 0 14px 14px;
  border-bottom: 1px solid var(--color-line);
  border-left: 2px solid transparent;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.compact-item:hover,
.compact-item:focus-within {
  border-left-color: var(--color-ok);
  background-color: rgba(232, 230, 223, 0.5);
}

.compact-item h3 {
  margin: 0 0 6px;
  font-size: 0.98rem;
}

.compact-reason {
  margin: 0 0 8px;
  max-width: var(--width-read);
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.entry-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 20px;
  margin-top: 14px;
}

.entry-links a {
  display: inline-block;
  padding: 4px 0;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-line);
}

.entry-links a:hover,
.entry-links a:focus-visible {
  color: var(--color-ok);
  border-bottom-color: var(--color-ok);
}

/* --------------------------------------------------------------------------
   pages：频道分类
   -------------------------------------------------------------------------- */

.step-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.step-block {
  padding: 16px;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.step-block .step-num {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--color-ok);
}

.step-block h3 {
  margin: 0 0 6px;
  font-size: 0.98rem;
}

.step-block p:last-child {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.anchor-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 20px;
  margin-bottom: var(--space-section);
  padding: 12px 16px;
  background-color: var(--color-panel);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.anchor-bar-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--color-muted);
}

.anchor-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}

.anchor-list a {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-line);
}

.anchor-list a:hover,
.anchor-list a:focus-visible {
  color: var(--color-ok);
  border-bottom-color: var(--color-ok);
}

.section-cover .media-figure {
  max-width: 720px;
}

.section-cover .media-figure img {
  aspect-ratio: 16 / 9;
}

.channel-group {
  margin-bottom: 24px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background-color: var(--color-white);
  overflow: hidden;
}

.channel-group:last-child {
  margin-bottom: 0;
}

.group-head {
  padding: 14px 16px;
  background-color: var(--color-panel);
  border-bottom: 1px solid var(--color-line);
}

.group-head h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 4px;
  font-size: 1rem;
}

.group-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-ok);
}

.group-scope {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.entry-row {
  display: grid;
  grid-template-columns: 72px minmax(0, 1.4fr) repeat(4, minmax(0, 1fr));
  gap: 12px;
  align-items: baseline;
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-line);
  font-size: 0.86rem;
}

.entry-row:last-child {
  border-bottom: 0;
}

.entry-id {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-muted);
}

.entry-title {
  font-weight: 600;
  line-height: 1.6;
}

.entry-field {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--color-muted);
}

/* --------------------------------------------------------------------------
   pages：专题片单
   -------------------------------------------------------------------------- */

.prose {
  max-width: var(--width-read);
  margin-bottom: 16px;
}

.prose p {
  font-size: 0.95rem;
  line-height: 1.8;
}

.rule-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.rule-item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 16px;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.rule-num {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--color-ok);
}

.rule-body h3 {
  margin: 0 0 4px;
  font-size: 0.98rem;
}

.rule-body p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.collection-block {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
  gap: 32px;
  align-items: start;
  margin-bottom: var(--space-section);
  padding-bottom: var(--space-section);
  border-bottom: 1px solid var(--color-line);
}

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

.collection-media {
  min-width: 0;
}

.collection-figure {
  margin-bottom: 14px;
  aspect-ratio: 16 / 10;
}

.collection-label {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--color-muted);
}

.collection-media h2 {
  margin: 0 0 8px;
  font-size: 1.2rem;
}

.collection-scope {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--color-muted);
}

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

.list-title {
  margin: 0 0 14px;
  font-size: 0.95rem;
  color: var(--color-muted);
}

.playlist {
  display: flex;
  flex-direction: column;
  gap: 2px;
  counter-reset: none;
}

.playlist-item {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-line);
}

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

.playlist-num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-ok);
}

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

.playlist-name {
  margin: 0 0 4px;
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.6;
}

.playlist-role {
  margin: 0 0 6px;
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.playlist-text .channel-link {
  font-size: 0.8rem;
}

.skip-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}

.skip-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.skip-mark {
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  margin-top: 8px;
  border-radius: 50%;
}

.skip-mark-skip {
  background-color: var(--color-warn);
}

.skip-mark-keep {
  background-color: var(--color-ok);
}

.skip-item p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
}

.section-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.88rem;
}

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

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

/* --------------------------------------------------------------------------
   pages：编目记录
   -------------------------------------------------------------------------- */

.section--stages,
.section--fields,
.section--adjust {
  margin-bottom: var(--space-section);
}

.stage-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 16px;
}

.section--stages .stage-item {
  padding: 18px;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-left: 3px solid var(--color-ok);
  border-radius: var(--radius);
}

.stage-no {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--color-ok);
}

.section--stages .stage-title {
  margin: 0 0 8px;
  font-size: 1rem;
}

.stage-desc {
  margin: 0 0 10px;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--color-muted);
}

.stage-checks {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stage-checks li {
  position: relative;
  padding-left: 16px;
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.stage-checks li::before {
  content: "·";
  position: absolute;
  left: 4px;
  color: var(--color-ok);
}

.section--fields .media-figure {
  max-width: 640px;
  margin: 16px 0 20px;
}

.section--fields .media-figure img {
  aspect-ratio: 16 / 9;
}

.section--fields .field-table {
  margin-top: 4px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.adjust-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 16px;
}

.adjust-item {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 14px;
  padding: 14px 16px;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.adjust-no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-ok);
}

.adjust-body {
  min-width: 0;
  font-size: 0.9rem;
  line-height: 1.75;
}

.adjust-target {
  margin: 0 0 4px;
  font-weight: 600;
}

.adjust-reason {
  margin: 0 0 6px;
  color: var(--color-muted);
}

.adjust-link {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--color-ok);
}

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

/* --------------------------------------------------------------------------
   pages：观看准备
   -------------------------------------------------------------------------- */

.prep-flow .prep-figure {
  max-width: 640px;
  margin: 16px 0 24px;
}

.prep-flow .prep-figure img {
  aspect-ratio: 16 / 9;
}

.prep-flow .step-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.prep-flow .step-item {
  padding: 16px;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.prep-flow .step-num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--color-ok);
}

.prep-flow .step-title {
  margin: 0 0 6px;
  font-size: 0.98rem;
}

.step-action {
  margin: 0 0 8px;
  font-size: 0.88rem;
  line-height: 1.7;
}

.step-tip {
  margin: 0;
  padding-top: 8px;
  border-top: 1px dashed var(--color-line);
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--color-warn);
}

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

.check-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr) minmax(0, 0.9fr);
  gap: 16px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-line);
}

.check-name {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 600;
}

.check-standard {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.check-state {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-ok);
}

.faq-block .faq-item {
  max-width: 900px;
}

/* --------------------------------------------------------------------------
   pages：线索与纠错
   -------------------------------------------------------------------------- */

.page-hero {
  margin-bottom: 28px;
}

.page-hero .tag {
  margin-right: 6px;
}

.media-figure {
  margin-bottom: var(--space-section);
}

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

.issue-card {
  padding: 16px;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.issue-card h3 {
  margin: 0 0 8px;
  font-size: 0.98rem;
}

.issue-card p {
  margin: 0 0 8px;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.issue-need {
  padding-top: 8px;
  border-top: 1px dashed var(--color-line);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-ink);
}

.prep-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 16px;
}

.prep-list li {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 16px;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.prep-index {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--color-ok);
}

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

.prep-body h3 {
  margin: 0 0 4px;
  font-size: 0.95rem;
}

.prep-body p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.process-steps {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 16px;
}

.process-step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 4px 12px;
  padding: 14px 16px;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-left: 3px solid var(--color-ok);
  border-radius: var(--radius);
}

.step-no {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--color-ok);
}

.process-step h3 {
  margin: 0;
  font-size: 0.95rem;
}

.process-step p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.scope-note > p {
  max-width: var(--width-read);
  font-size: 0.92rem;
  line-height: 1.8;
}

.scope-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 14px 0;
}

.scope-list li {
  position: relative;
  padding-left: 16px;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--color-muted);
}

.scope-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--color-warn);
}

.scope-tail {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.88rem;
}

.scope-tail a {
  color: var(--color-ok);
}

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

/* --------------------------------------------------------------------------
   pages：404
   -------------------------------------------------------------------------- */

.error-main {
  display: flex;
  justify-content: center;
  padding: 56px 24px;
}

.error-panel {
  width: 100%;
  max-width: 620px;
  padding: 32px;
  background-color: var(--color-white);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
}

.error-code {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--color-warn);
}

.error-title {
  margin: 0 0 12px;
  font-size: clamp(1.5rem, 3.4vw, 2rem);
}

.error-lead {
  margin: 0 0 20px;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--color-muted);
}

.error-actions {
  margin: 0 0 24px;
}

.error-button {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 18px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-bg);
  background-color: var(--color-ink);
  border-radius: var(--radius);
}

.error-button:hover,
.error-button:focus-visible {
  background-color: var(--color-ok);
  color: var(--color-white);
}

.error-paths {
  padding-top: 20px;
  border-top: 1px solid var(--color-line);
}

.error-paths-title {
  margin: 0 0 12px;
  font-size: 0.95rem;
}

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

.error-path-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 10px;
  font-size: 0.9rem;
}

.error-path-list a {
  font-family: var(--font-mono);
  color: var(--color-ok);
}

.error-path-list a:hover,
.error-path-list a:focus-visible {
  text-decoration: underline;
}

.error-path-note {
  font-size: 0.84rem;
  color: var(--color-muted);
}

/* --------------------------------------------------------------------------
   responsive：900px 与 620px 断点
   -------------------------------------------------------------------------- */

@media (max-width: 900px) {
  .header-inner {
    flex-wrap: wrap;
    gap: 12px;
    padding: 10px 20px;
  }

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

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

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0 4px;
    border-top: 1px solid var(--color-line);
  }

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

  .nav-item {
    width: 100%;
  }

  .nav-link {
    width: 100%;
    justify-content: flex-start;
    border-bottom: 0;
    border-left: 2px solid transparent;
    padding: 10px 12px;
  }

  .nav-link.is-current {
    border-left-color: var(--color-ok);
    background-color: var(--color-panel);
  }

  .nav-menu {
    position: static;
    display: none;
    min-width: 0;
    box-shadow: none;
    border: 0;
    border-left: 1px solid var(--color-line);
    border-radius: 0;
    margin-left: 14px;
    padding: 2px 0 6px;
    background-color: transparent;
  }

  .nav-item-has-menu:hover .nav-menu,
  .nav-item-has-menu:focus-within .nav-menu {
    display: none;
  }

  .nav-item-has-menu.menu-open .nav-menu {
    display: block;
  }

  .status-bar-inner {
    padding: 8px 20px;
  }

  .status-item + .status-item {
    padding-left: 0;
    border-left: 0;
  }

  .home-main,
  .inner-main {
    padding-left: 20px;
    padding-right: 20px;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }

  .hero-intro {
    padding: 22px;
  }

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

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

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

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

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

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

  .layout-aside,
  .page-aside {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

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

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

  .entry-row {
    grid-template-columns: 64px minmax(0, 1fr) repeat(2, minmax(0, 1fr));
    row-gap: 6px;
  }

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

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

  .check-item {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  }

  .check-state {
    grid-column: 1 / -1;
  }

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

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
    padding: 32px 20px 20px;
  }

  .footer-note,
  .footer-bottom {
    padding-left: 20px;
    padding-right: 20px;
  }
}

@media (max-width: 620px) {
  .header-inner {
    padding: 10px 16px;
  }

  .brand {
    font-size: 0.98rem;
  }

  .status-bar-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 8px 16px;
  }

  .home-main,
  .inner-main {
    padding-left: 16px;
    padding-right: 16px;
    padding-top: 20px;
  }

  .hero-intro {
    padding: 18px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .featured-row {
    padding-left: 12px;
  }

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

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

  .topic-card {
    padding: 14px;
  }

  .prepare-steps .step-item {
    padding-left: 40px;
  }

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

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

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

  .anchor-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .anchor-list {
    gap: 6px 14px;
  }

  .entry-row {
    grid-template-columns: 56px minmax(0, 1fr);
    row-gap: 4px;
    padding: 12px;
  }

  .entry-field {
    grid-column: 2;
  }

  .collection-block {
    padding-bottom: 28px;
    margin-bottom: 28px;
  }

  .playlist-item {
    grid-template-columns: 30px minmax(0, 1fr);
    gap: 8px;
  }

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

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

  .check-state {
    grid-column: auto;
  }

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

  .adjust-item,
  .prep-list li,
  .process-step,
  .rule-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .process-step .step-no {
    grid-row: auto;
  }

  .field-table {
    min-width: 0;
  }

  .field-table thead {
    display: none;
  }

  .field-table tbody tr {
    display: block;
    padding: 12px 14px;
    border-top: 1px solid var(--color-line);
  }

  .field-table tbody tr:first-child {
    border-top: 0;
  }

  .field-table tbody th,
  .field-table tbody td {
    display: block;
    padding: 0;
    border: 0;
    white-space: normal;
    background-color: transparent;
  }

  .field-table tbody th {
    margin-bottom: 4px;
    color: var(--color-ink);
  }

  .field-table tbody td {
    margin-bottom: 6px;
    font-size: 0.86rem;
    color: var(--color-muted);
  }

  .field-table tbody td:last-child {
    margin-bottom: 0;
  }

  .footer-nav {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 6px;
    padding: 12px 16px 24px;
  }

  .error-main {
    padding: 32px 16px;
  }

  .error-panel {
    padding: 22px;
  }
}

/* 动效增强：仅次级模块滚动出现，不改变初始可见性 */
@media (prefers-reduced-motion: no-preference) {
  .panel-cell,
  .stage-section .stage-item,
  .topic-card,
  .issue-card,
  .aside-block {
    transition: border-color 0.18s ease, transform 0.18s ease;
  }

  .panel-cell:hover,
  .stage-section .stage-item:hover,
  .topic-card:hover,
  .issue-card:hover {
    border-color: var(--color-ok);
  }
}