/* ==========================================================================
   天美电影 · 全站样式
   base → layout → components → pages → responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. base
   -------------------------------------------------------------------------- */

:root {
  --ink: #111111;
  --paper: #f6f3ec;
  --white: #ffffff;
  --accent: #8a1c1c;
  --muted: #6f6a61;
  --rule: #d9d3c7;
  --rule-dark: #b9b2a4;

  --font-serif: "Songti SC", "Noto Serif SC", Georgia, serif;
  --font-sans: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;

  --wrap: 1120px;
  --gutter: 24px;
  --radius: 2px;

  --space-xs: 8px;
  --space-sm: 14px;
  --space-md: 22px;
  --space-lg: 36px;
  --space-xl: 56px;
}

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

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

body {
  margin: 0;
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

h1 {
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.15;
  letter-spacing: 0.02em;
}

h2 {
  font-size: 26px;
  line-height: 1.3;
}

h3 {
  font-size: 18px;
  line-height: 1.45;
}

p {
  margin: 0 0 var(--space-sm);
}

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

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

a {
  color: var(--ink);
  text-decoration: none;
  text-underline-offset: 3px;
}

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

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

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

figure {
  margin: 0;
}

figcaption {
  margin-top: var(--space-xs);
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

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

button {
  font: inherit;
  color: inherit;
}

/* --------------------------------------------------------------------------
   2. layout · 骨架
   -------------------------------------------------------------------------- */

.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--paper);
}

.site-main {
  flex: 1 0 auto;
  width: 100%;
}

.site-header,
.site-footer {
  width: 100%;
}

/* 页头 ------------------------------------------------------------------ */

.site-header {
  background-color: var(--paper);
  border-bottom: 1px solid var(--ink);
}

.header-bar {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 14px var(--gutter);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  position: relative;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 0 0 auto;
  text-decoration: none;
}

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

.brand-name {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.06em;
  color: var(--ink);
}

.brand-tagline {
  font-size: 12px;
  line-height: 1.4;
  letter-spacing: 0.04em;
  color: var(--muted);
}

/* 主导航 ---------------------------------------------------------------- */

.site-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-size: 14px;
}

.nav-group {
  position: relative;
}

.nav-group-title {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 44px;
  padding: 0 2px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
  border-bottom: 1px solid transparent;
}

.nav-group-title::-webkit-details-marker {
  display: none;
}

.nav-group-title::after {
  content: "";
  width: 6px;
  height: 6px;
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  transform: translateY(-2px) rotate(45deg);
  transition: transform 0.18s ease;
}

.nav-group[open] > .nav-group-title::after {
  transform: translateY(2px) rotate(-135deg);
}

.nav-group-desc {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  width: 220px;
  margin: 0;
  padding: 10px 14px 6px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
  background-color: var(--white);
  border: 1px solid var(--rule);
  border-bottom: 0;
}

.nav-group-list {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  z-index: 20;
  width: 220px;
  margin: 0;
  padding: 6px 14px 12px;
  background-color: var(--white);
  border: 1px solid var(--rule);
}

.nav-group-desc + .nav-group-list {
  padding-top: 4px;
}

.nav-group:not([open]) .nav-group-desc,
.nav-group:not([open]) .nav-group-list {
  display: none;
}

.nav-group-list li {
  border-bottom: 1px solid var(--rule);
}

.nav-group-list li:last-child {
  border-bottom: 0;
}

.nav-group-list a {
  display: block;
  padding: 9px 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--ink);
}

.nav-group-list a.is-current {
  color: var(--accent);
  font-weight: 600;
  text-decoration: underline;
}

.nav-quick {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  color: var(--ink);
  background-color: transparent;
}

.nav-quick:hover {
  background-color: var(--ink);
  color: var(--paper);
  text-decoration: none;
}

.nav-quick.is-current {
  background-color: var(--ink);
  color: var(--paper);
}

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

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

/* 移动抽屉 -------------------------------------------------------------- */

.mobile-drawer {
  border-top: 1px solid var(--rule);
  background-color: var(--white);
}

.mobile-drawer[hidden] {
  display: none;
}

.mobile-drawer nav {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 12px var(--gutter) 20px;
}

.drawer-group-title {
  margin: var(--space-sm) 0 2px;
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--ink);
}

.drawer-group-desc {
  margin: 0 0 6px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
}

.mobile-drawer ul {
  border-top: 1px solid var(--rule);
}

.mobile-drawer li {
  border-bottom: 1px solid var(--rule);
}

.mobile-drawer li a {
  display: flex;
  align-items: center;
  min-height: 44px;
  font-size: 15px;
  color: var(--ink);
}

.mobile-drawer li a.is-current {
  color: var(--accent);
  font-weight: 600;
}

/* 页脚 ------------------------------------------------------------------ */

.site-footer {
  margin-top: var(--space-xl);
  padding: var(--space-lg) 0 var(--space-md);
  background-color: var(--paper);
  border-top: 1px solid var(--ink);
}

.footer-cols {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-lg);
}

.footer-title {
  margin: 0 0 var(--space-sm);
  padding-bottom: 8px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink);
  border-bottom: 1px solid var(--rule);
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col ul li:last-child {
  margin-bottom: 0;
}

.footer-col ul a {
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}

.footer-col ul a:hover {
  color: var(--ink);
}

.footer-brand-line {
  max-width: var(--wrap);
  margin: var(--space-lg) auto 0;
  padding: var(--space-sm) var(--gutter) 0;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--muted);
  border-top: 1px solid var(--rule);
}

/* 内页骨架 -------------------------------------------------------------- */

.inner-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: var(--space-md) 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

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

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

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

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

.page-header {
  padding: var(--space-sm) 0 var(--space-md);
  border-bottom: 1px solid var(--ink);
}

.page-title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 760px) minmax(0, 300px);
  gap: var(--space-lg);
  align-items: start;
  padding: var(--space-lg) 0 0;
}

.page-layout.layout-single {
  display: block;
  max-width: 820px;
  margin: 0 auto;
}

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

.page-aside,
.layout-aside {
  min-width: 0;
  padding: var(--space-md);
  background-color: var(--white);
  border: 1px solid var(--rule);
}

/* 通用区块标题 ---------------------------------------------------------- */

.section-label {
  margin: 0 0 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.section-head {
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--ink);
}

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

.section-desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 62ch;
}

.section-intro {
  margin: 0 0 var(--space-md);
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.section-note {
  margin: 0 0 var(--space-md);
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   3. components
   -------------------------------------------------------------------------- */

/* 按钮 ------------------------------------------------------------------ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 10px 22px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  border-radius: var(--radius);
  border: 1px solid var(--ink);
  text-align: center;
}

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

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

.btn-primary:hover {
  background-color: var(--accent);
  border-color: var(--accent);
  color: var(--white);
}

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

.btn-ghost:hover {
  background-color: var(--ink);
  color: var(--paper);
}

/* 图片容器 -------------------------------------------------------------- */

.hero-figure img,
.page-hero-media img,
.page-hero-figure img,
.page-title-figure img,
.page-head-figure img,
.title-figure img,
.special-figure img,
.gallery-item img,
.special-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background-color: var(--white);
  border: 1px solid var(--rule);
}

/* 语义表格 -------------------------------------------------------------- */

.data-table {
  margin-top: var(--space-sm);
  font-size: 14px;
  line-height: 1.7;
  border: 1px solid var(--rule);
  background-color: var(--white);
}

.data-table caption {
  padding: 0 0 10px;
  font-size: 13px;
  text-align: left;
  color: var(--muted);
}

.data-table th,
.data-table td {
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--rule);
  border-right: 1px solid var(--rule);
}

.data-table tr > *:last-child {
  border-right: 0;
}

.data-table tbody tr:last-child > * {
  border-bottom: 0;
}

.data-table thead th {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ink);
  background-color: var(--paper);
  border-bottom: 1px solid var(--ink);
}

.data-table tbody th {
  font-weight: 600;
  color: var(--ink);
  background-color: var(--paper);
}

.data-table td {
  color: var(--muted);
}

/* 折叠问答 -------------------------------------------------------------- */

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

.faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  min-height: 44px;
  padding: 14px 0;
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

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

.faq-item summary::before {
  content: "+";
  flex: 0 0 auto;
  width: 18px;
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 400;
  line-height: 1.4;
  color: var(--accent);
}

.faq-item[open] summary::before {
  content: "–";
}

.faq-item summary:hover {
  color: var(--accent);
}

.faq-item p {
  padding: 0 0 16px 28px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* 关联内容 -------------------------------------------------------------- */

.related-links,
.related-list,
.related-grid,
.channel-links,
.special-link-list,
.entry-links {
  margin: 0;
  padding: 0;
  list-style: none;
}

.related-block {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--ink);
}

.related-block h2 {
  margin-bottom: var(--space-md);
}

.related-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-md);
}

.related-list .related-item a {
  display: block;
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
}

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

.related-list .related-item p {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.related-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-sm) var(--space-md);
}

.related-links li a {
  display: block;
  padding: 12px 0;
  font-size: 15px;
  line-height: 1.6;
  border-top: 1px solid var(--rule);
  color: var(--ink);
}

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

/* 编号时间线通用 -------------------------------------------------------- */

.confirm-list,
.timeline-list,
.judge-steps,
.level-list,
.flow-timeline,
.path-timeline,
.prepare-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

/* --------------------------------------------------------------------------
   4. pages · 首页
   -------------------------------------------------------------------------- */

.site-main.home-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* 首屏 ------------------------------------------------------------------ */

.hero-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 420px);
  gap: var(--space-lg);
  align-items: start;
  padding: var(--space-lg) 0 var(--space-xl);
  border-bottom: 1px solid var(--ink);
}

.hero-copy {
  min-width: 0;
  padding-top: var(--space-xs);
}

.hero-copy h1 {
  margin-bottom: var(--space-sm);
  max-width: 22ch;
}

.hero-lead {
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: var(--space-md) 0 var(--space-sm);
}

.hero-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

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

.hero-figure img {
  aspect-ratio: 4 / 3;
}

/* 常问任务路径 ---------------------------------------------------------- */

.task-paths {
  padding: var(--space-xl) 0;
  border-bottom: 1px solid var(--rule);
}

.task-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 var(--space-lg);
}

.task-item {
  min-width: 0;
  padding: var(--space-md) 0;
  border-top: 1px solid var(--rule);
}

.task-question {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
}

.task-answer {
  margin: 0 0 8px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.task-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  text-decoration: underline;
}

/* 焦点提示条 ------------------------------------------------------------ */

.focus-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  margin: var(--space-lg) 0 0;
  padding: var(--space-md);
  background-color: var(--white);
  border: 1px solid var(--ink);
  border-left: 4px solid var(--accent);
}

.focus-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.focus-tag {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--white);
  background-color: var(--accent);
  border-radius: var(--radius);
}

.focus-link {
  flex: 0 0 auto;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  text-decoration: underline;
}

/* 频道分类速览 ---------------------------------------------------------- */

.channel-overview {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 300px);
  gap: var(--space-lg);
  align-items: start;
  padding: var(--space-xl) 0;
  border-bottom: 1px solid var(--rule);
}

.channel-main {
  min-width: 0;
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: var(--space-md);
}

.filter-tag {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 2px 12px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background-color: var(--white);
}

.filter-tag.is-active {
  color: var(--white);
  background-color: var(--ink);
  border-color: var(--ink);
}

.channel-list {
  border-top: 1px solid var(--ink);
}

.channel-item {
  min-width: 0;
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--rule);
}

.channel-name {
  margin: 0 0 6px;
  font-size: 19px;
}

.channel-scope {
  margin: 0 0 4px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

.channel-scene {
  margin: 0 0 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.channel-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  text-decoration: underline;
}

.channel-side {
  min-width: 0;
  padding: var(--space-md);
  background-color: var(--white);
  border: 1px solid var(--rule);
  border-top: 3px solid var(--ink);
}

.side-title {
  margin: 0 0 8px;
  font-size: 17px;
}

.side-text {
  margin: 0 0 var(--space-sm);
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.side-points {
  margin: 0 0 var(--space-sm);
  padding: 0;
  list-style: none;
  counter-reset: side-point;
}

.side-points li {
  position: relative;
  padding: 8px 0 8px 24px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
  border-top: 1px solid var(--rule);
  counter-increment: side-point;
}

.side-points li::before {
  content: counter(side-point, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 9px;
  font-family: Georgia, serif;
  font-size: 12px;
  color: var(--accent);
}

.side-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  text-decoration: underline;
}

/* 专题片单预览 ---------------------------------------------------------- */

.special-preview {
  padding: var(--space-xl) 0;
  border-bottom: 1px solid var(--rule);
}

.special-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-lg);
}

.special-card {
  min-width: 0;
  display: flex;
  flex-direction: column;
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--rule);
}

.special-figure {
  margin-bottom: var(--space-sm);
}

.special-figure img {
  aspect-ratio: 3 / 2;
}

.special-name {
  margin: 0 0 6px;
  font-size: 19px;
}

.special-intro {
  margin: 0 0 var(--space-sm);
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.special-items {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--rule);
}

.special-items li {
  border-bottom: 1px solid var(--rule);
}

.special-items li a {
  display: block;
  padding: 9px 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink);
}

.special-items li a:hover {
  color: var(--accent);
}

/* 观看路径时间线 -------------------------------------------------------- */

.watch-timeline {
  padding: var(--space-xl) 0;
  border-bottom: 1px solid var(--rule);
}

.watch-timeline .timeline-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-md);
}

.watch-timeline .timeline-step {
  min-width: 0;
  padding-top: var(--space-sm);
  border-top: 2px solid var(--ink);
}

.watch-timeline .step-num {
  display: block;
  margin-bottom: 8px;
  font-family: Georgia, serif;
  font-size: 24px;
  line-height: 1.2;
  color: var(--accent);
}

.watch-timeline .step-title {
  margin: 0 0 6px;
  font-size: 17px;
}

.watch-timeline .step-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.timeline-more {
  margin: var(--space-md) 0 0;
  font-size: 14px;
}

.timeline-more a {
  font-weight: 600;
  color: var(--accent);
  text-decoration: underline;
}

/* 入口核验要点 ---------------------------------------------------------- */

.entry-points {
  padding: var(--space-xl) 0;
  border-bottom: 1px solid var(--rule);
}

.entry-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-lg);
}

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

.col-title {
  margin: 0 0 var(--space-sm);
  padding-bottom: 8px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
}

.entry-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: entry-point;
}

.entry-list li {
  position: relative;
  padding: 10px 0 10px 26px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
  border-bottom: 1px solid var(--rule);
  counter-increment: entry-point;
}

.entry-list li::before {
  content: counter(entry-point, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 11px;
  font-family: Georgia, serif;
  font-size: 12px;
  color: var(--accent);
}

.entry-more {
  margin: var(--space-md) 0 0;
  font-size: 14px;
}

.entry-more a {
  font-weight: 600;
  color: var(--accent);
  text-decoration: underline;
}

/* 维护摘要条 ------------------------------------------------------------ */

.maintenance-strip {
  padding: var(--space-lg) 0 var(--space-xl);
}

.maintenance-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "title links"
    "text  links";
  gap: 6px var(--space-lg);
  align-items: center;
  padding: var(--space-md) var(--space-lg);
  background-color: var(--white);
  border: 1px solid var(--ink);
}

.maintenance-title {
  grid-area: title;
  margin: 0;
  font-size: 20px;
}

.maintenance-text {
  grid-area: text;
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 60ch;
}

.maintenance-links {
  grid-area: links;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.maintenance-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 6px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  border: 1px solid var(--ink);
  border-radius: var(--radius);
}

.maintenance-links a:hover {
  background-color: var(--ink);
  color: var(--paper);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   5. pages · 内页通用模块
   -------------------------------------------------------------------------- */

/* 标题区配图 ------------------------------------------------------------ */

.page-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 380px);
  gap: var(--space-lg);
  align-items: start;
  padding: var(--space-md) 0 var(--space-lg);
  border-bottom: 1px solid var(--rule);
}

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

.page-hero-lead,
.page-lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 54ch;
}

.page-hero-media,
.page-hero-figure {
  min-width: 0;
}

.page-hero-media img,
.page-hero-figure img {
  aspect-ratio: 16 / 10;
}

.page-title-block {
  padding: var(--space-md) 0 var(--space-lg);
  border-bottom: 1px solid var(--rule);
}

.page-title-block .page-lead {
  max-width: 62ch;
}

.page-title-area {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 340px);
  gap: var(--space-lg);
  align-items: start;
  padding: var(--space-md) 0 var(--space-lg);
  border-bottom: 1px solid var(--rule);
}

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

.title-figure {
  min-width: 0;
}

.title-figure img {
  aspect-ratio: 4 / 3;
}

.page-head {
  padding: var(--space-md) 0 var(--space-lg);
  border-bottom: 1px solid var(--rule);
}

.page-head .page-lead {
  max-width: 62ch;
}

.page-head-figure {
  max-width: 640px;
  margin-top: var(--space-md);
}

.page-head-figure img {
  aspect-ratio: 16 / 9;
}

/* 内页通用区块 ---------------------------------------------------------- */

.content-section {
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--rule);
}

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

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

/* 侧栏通用 -------------------------------------------------------------- */

.page-aside h2,
.layout-aside h2 {
  margin: 0 0 8px;
  font-size: 18px;
}

.aside-intro,
.aside-note,
.aside-desc {
  margin: 0 0 var(--space-sm);
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.aside-title {
  margin: 0 0 8px;
  font-size: 18px;
}

.aside-footnote {
  margin: var(--space-sm) 0 0;
  padding-top: var(--space-sm);
  font-size: 13px;
  line-height: 1.7;
  border-top: 1px solid var(--rule);
}

.aside-footnote a {
  color: var(--accent);
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   6. pages · 频道索引
   -------------------------------------------------------------------------- */

.channel-table {
  padding-top: var(--space-lg);
}

.channel-table h2 {
  margin-bottom: 8px;
}

.anchor-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--ink);
}

.anchor-row a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 2px 12px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--ink);
  background-color: var(--white);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}

.anchor-row a:hover {
  border-color: var(--ink);
  color: var(--accent);
  text-decoration: none;
}

.channel-entry {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--rule);
  scroll-margin-top: 24px;
}

.channel-entry h3 {
  margin: 0 0 10px;
  font-size: 20px;
}

.channel-meta {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 0;
  margin: 0;
  border-top: 1px solid var(--rule);
}

.channel-meta dt {
  padding: 9px 0;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--ink);
  border-bottom: 1px solid var(--rule);
}

.channel-meta dd {
  margin: 0;
  padding: 9px 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
  border-bottom: 1px solid var(--rule);
}

.channel-meta dd a {
  color: var(--accent);
  text-decoration: underline;
}

/* 频道判断方法（右侧栏） ------------------------------------------------ */

.judge-steps {
  counter-reset: judge;
}

.judge-steps li {
  position: relative;
  padding: 10px 0 10px 28px;
  border-top: 1px solid var(--rule);
  counter-increment: judge;
}

.judge-steps li::before {
  content: counter(judge, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 11px;
  font-family: Georgia, serif;
  font-size: 12px;
  color: var(--accent);
}

.judge-steps h3 {
  margin: 0 0 4px;
  font-size: 15px;
}

.judge-steps p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* 频道交叉说明 ---------------------------------------------------------- */

.channel-cross {
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--ink);
}

.channel-cross h2 {
  margin-bottom: 8px;
}

.cross-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-md);
}

.cross-item {
  min-width: 0;
  padding: var(--space-md);
  background-color: var(--white);
  border: 1px solid var(--rule);
}

.cross-item h3 {
  margin: 0 0 8px;
  font-size: 17px;
}

.cross-item p {
  margin: 0 0 8px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.cross-item p:last-child {
  margin-bottom: 0;
}

/* 推荐专题入口 ---------------------------------------------------------- */

.channel-specials {
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--ink);
}

.channel-specials h2 {
  margin-bottom: 8px;
}

.special-link-list {
  border-top: 1px solid var(--rule);
}

.special-link-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--rule);
}

.special-link-list li a {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
}

.special-link-list li a:hover {
  color: var(--accent);
}

.special-link-list li span {
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* 关联链接（频道页） ---------------------------------------------------- */

.related-links {
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--ink);
}

.related-links h2 {
  margin-bottom: var(--space-md);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-md);
}

.related-grid li {
  min-width: 0;
  padding: var(--space-md);
  background-color: var(--white);
  border: 1px solid var(--rule);
}

.related-grid li a {
  display: block;
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
}

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

.related-grid li span {
  display: block;
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   7. pages · 专题片单
   -------------------------------------------------------------------------- */

.special-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
  gap: var(--space-lg);
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--ink);
}

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

.intro-body h2 {
  margin-bottom: var(--space-sm);
}

.intro-body p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 60ch;
}

.intro-methods {
  min-width: 0;
  padding-left: var(--space-lg);
  border-left: 1px solid var(--rule);
}

.intro-methods h3 {
  margin: 0 0 var(--space-sm);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.method-list {
  counter-reset: method;
}

.method-list li {
  position: relative;
  padding: 8px 0 8px 26px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
  border-top: 1px solid var(--rule);
  counter-increment: method;
}

.method-list li::before {
  content: counter(method, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 9px;
  font-family: Georgia, serif;
  font-size: 12px;
  color: var(--accent);
}

.method-list strong {
  color: var(--ink);
}

/* 专题封面廊 ------------------------------------------------------------ */

.special-gallery {
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--rule);
}

.gallery-head {
  margin-bottom: var(--space-md);
}

.gallery-head h2 {
  margin-bottom: 6px;
}

.gallery-track {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-md);
}

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

.gallery-item figure img {
  aspect-ratio: 3 / 2;
}

/* 专题容器 -------------------------------------------------------------- */

.special-list {
  padding: var(--space-lg) 0;
}

.special-list h2 {
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--ink);
}

.special-block {
  display: grid;
  grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
  gap: var(--space-lg);
  align-items: start;
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--rule);
}

.special-block:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.special-cover {
  min-width: 0;
}

.special-cover img {
  aspect-ratio: 4 / 3;
}

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

.special-index {
  margin: 0 0 6px;
  font-family: Georgia, serif;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.special-text h3 {
  margin: 0 0 8px;
  font-size: 22px;
}

.special-desc {
  margin: 0 0 var(--space-sm);
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.film-list {
  margin: 0 0 var(--space-sm);
  padding: 0;
  list-style: none;
  counter-reset: film;
  border-top: 1px solid var(--rule);
}

.film-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 10px;
  padding: 9px 0 9px 26px;
  position: relative;
  border-bottom: 1px solid var(--rule);
  counter-increment: film;
}

.film-list li::before {
  content: counter(film, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 10px;
  font-family: Georgia, serif;
  font-size: 12px;
  color: var(--accent);
}

.film-list li a {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

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

.film-list li span {
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.special-channel {
  margin: 0;
  font-size: 14px;
}

.special-channel a {
  font-weight: 600;
  color: var(--accent);
  text-decoration: underline;
}

/* 片单顺序说明 ---------------------------------------------------------- */

.order-notes {
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--ink);
}

.order-notes h2 {
  margin-bottom: var(--space-md);
}

.order-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-md);
}

.order-item {
  min-width: 0;
  padding-top: var(--space-sm);
  border-top: 2px solid var(--ink);
}

.order-item h3 {
  margin: 0 0 6px;
  font-size: 16px;
}

.order-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* 关联频道 -------------------------------------------------------------- */

.related-channels {
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--rule);
}

.related-channels h2 {
  margin-bottom: 6px;
}

.channel-links {
  margin-top: var(--space-sm);
  border-top: 1px solid var(--rule);
}

.channel-links li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--rule);
}

.channel-links li a {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
}

.channel-links li a:hover {
  color: var(--accent);
}

.channel-links li span {
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* 返回目录 -------------------------------------------------------------- */

.back-to-index {
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--ink);
}

.back-to-index h2 {
  margin-bottom: 8px;
  font-size: 20px;
}

.back-to-index p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.back-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: var(--space-sm);
}

.back-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 6px 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  border: 1px solid var(--ink);
  border-radius: var(--radius);
}

.back-links a:hover {
  background-color: var(--ink);
  color: var(--paper);
  text-decoration: none;
}

/* 专题页底部关联条 ------------------------------------------------------ */

.special-list ~ .related-links,
.related-links[aria-label] {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
  padding: var(--space-md) 0;
  border-top: 1px solid var(--rule);
}

.related-links-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.related-links-item {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   8. pages · 观看指南
   -------------------------------------------------------------------------- */

.page-title-block .page-title-text {
  min-width: 0;
}

.eyebrow {
  margin: 0 0 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.page-lede {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 60ch;
}

.page-title-figure {
  max-width: 640px;
  margin-top: var(--space-md);
}

.page-title-figure img {
  aspect-ratio: 16 / 9;
}

/* 观看前三项确认 -------------------------------------------------------- */

.confirm-block,
.step-timeline,
.faq-block {
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--rule);
}

.confirm-block h2,
.step-timeline h2,
.faq-block h2 {
  margin-bottom: 8px;
}

.confirm-list {
  counter-reset: confirm;
}

.confirm-item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: var(--space-sm);
  align-items: start;
  padding: var(--space-md) 0;
  border-top: 1px solid var(--rule);
  counter-increment: confirm;
}

.confirm-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  font-family: Georgia, serif;
  font-size: 16px;
  color: var(--white);
  background-color: var(--ink);
  border-radius: var(--radius);
}

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

.confirm-body h3 {
  margin: 0 0 6px;
  font-size: 18px;
}

.confirm-body p {
  margin: 0 0 6px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

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

.confirm-body a {
  font-weight: 600;
  color: var(--accent);
  text-decoration: underline;
}

/* 步骤时间线 ------------------------------------------------------------ */

.step-timeline .timeline-list {
  border-left: 2px solid var(--rule);
  margin-left: 12px;
  padding-left: var(--space-md);
}

.step-timeline .timeline-item {
  position: relative;
  padding-bottom: var(--space-md);
}

.step-timeline .timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-num {
  position: absolute;
  left: calc(-1 * var(--space-md) - 22px);
  top: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  font-family: Georgia, serif;
  font-size: 15px;
  color: var(--ink);
  background-color: var(--white);
  border: 1px solid var(--ink);
  border-radius: 50%;
}

.timeline-body {
  min-width: 0;
  padding-left: 34px;
}

.timeline-body h3 {
  margin: 4px 0 6px;
  font-size: 18px;
}

.timeline-body p {
  margin: 0 0 6px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

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

.timeline-body a {
  font-weight: 600;
  color: var(--accent);
  text-decoration: underline;
}

/* 常见问题 -------------------------------------------------------------- */

.faq-block .faq-item:first-of-type {
  border-top: 1px solid var(--rule);
}

/* 设备与网络提示（侧栏） ------------------------------------------------ */

.tip-list {
  border-top: 1px solid var(--rule);
}

.tip-item {
  padding: 10px 0;
  border-bottom: 1px solid var(--rule);
}

.tip-item h3 {
  margin: 0 0 4px;
  font-size: 15px;
}

.tip-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   9. pages · 入口核验
   -------------------------------------------------------------------------- */

.element-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-sm);
}

.element-card {
  min-width: 0;
  padding: var(--space-md);
  background-color: var(--white);
  border: 1px solid var(--rule);
  border-top: 3px solid var(--ink);
}

.element-index {
  margin: 0 0 8px;
  font-family: Georgia, serif;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.element-card h3 {
  margin: 0 0 8px;
  font-size: 17px;
}

.element-card p {
  margin: 0 0 8px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.element-note {
  padding-top: 8px;
  border-top: 1px solid var(--rule);
  font-size: 13px;
  color: var(--ink);
}

/* 对照表包装 ------------------------------------------------------------ */

.table-wrap {
  margin-top: var(--space-md);
  overflow-x: auto;
}

/* 常见误判（侧栏） ------------------------------------------------------ */

.aside-block {
  min-width: 0;
}

.aside-list {
  border-top: 1px solid var(--rule);
}

.aside-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--rule);
}

.aside-list h3 {
  margin: 0 0 4px;
  font-size: 15px;
}

.aside-list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* 反馈与纠错入口 -------------------------------------------------------- */

.entry-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-sm);
}

.entry-link {
  display: block;
  min-width: 0;
  padding: var(--space-md);
  background-color: var(--white);
  border: 1px solid var(--ink);
  border-radius: var(--radius);
}

.entry-link:hover {
  background-color: var(--ink);
  text-decoration: none;
}

.entry-link-title {
  display: block;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
}

.entry-link-desc {
  display: block;
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.entry-link:hover .entry-link-title {
  color: var(--paper);
}

.entry-link:hover .entry-link-desc {
  color: var(--rule);
}

/* 返回观看指南 ---------------------------------------------------------- */

.return-block {
  text-align: left;
}

.return-block h2 {
  margin-bottom: 8px;
  font-size: 20px;
}

.return-block p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.return-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: var(--space-sm);
  padding: 6px 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  border: 1px solid var(--ink);
  border-radius: var(--radius);
}

.return-link:hover {
  background-color: var(--ink);
  color: var(--paper);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   10. pages · 维护与纠错
   -------------------------------------------------------------------------- */

.maintenance-scope,
.maintenance-record,
.maintenance-levels,
.maintenance-flow,
.maintenance-relation {
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--rule);
}

.maintenance-scope h2,
.maintenance-record h2,
.maintenance-levels h2,
.maintenance-flow h2,
.maintenance-relation h2 {
  margin-bottom: 8px;
}

.scope-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-sm);
}

.scope-card {
  min-width: 0;
  padding: var(--space-md);
  background-color: var(--white);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
}

.scope-card h3 {
  margin: 0 0 8px;
  font-size: 17px;
}

.scope-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* 纠错分级 -------------------------------------------------------------- */

.level-list {
  counter-reset: level;
  margin-top: var(--space-sm);
  border-top: 1px solid var(--ink);
}

.level-item {
  position: relative;
  padding: var(--space-md) 0 var(--space-md) 48px;
  border-bottom: 1px solid var(--rule);
  counter-increment: level;
}

.level-num {
  position: absolute;
  left: 0;
  top: var(--space-md);
  font-family: Georgia, serif;
  font-size: 20px;
  line-height: 1.3;
  color: var(--accent);
}

.level-item h3 {
  margin: 0 0 6px;
  font-size: 17px;
}

.level-item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

/* 处理流程 -------------------------------------------------------------- */

.flow-timeline {
  counter-reset: flow;
  margin-top: var(--space-sm);
  border-left: 2px solid var(--rule);
  padding-left: var(--space-md);
  margin-left: 10px;
}

.flow-step {
  position: relative;
  padding-bottom: var(--space-md);
  counter-increment: flow;
}

.flow-step:last-child {
  padding-bottom: 0;
}

.flow-num {
  position: absolute;
  left: calc(-1 * var(--space-md) - 21px);
  top: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  font-family: Georgia, serif;
  font-size: 15px;
  color: var(--paper);
  background-color: var(--ink);
  border-radius: 50%;
}

.flow-step h3 {
  margin: 4px 0 6px 34px;
  font-size: 17px;
}

.flow-step p {
  margin: 0 0 0 34px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

/* 与入口核验的关系 ------------------------------------------------------ */

.relation-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-sm);
}

.relation-item {
  min-width: 0;
  padding-top: var(--space-sm);
  border-top: 2px solid var(--ink);
}

.relation-item h3 {
  margin: 0 0 6px;
  font-size: 16px;
}

.relation-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   11. pages · 反馈说明
   -------------------------------------------------------------------------- */

.feedback-types,
.feedback-prepare,
.feedback-path {
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--rule);
}

.feedback-types h2,
.feedback-prepare h2,
.feedback-path h2 {
  margin-bottom: 8px;
}

.type-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-sm);
}

.type-item {
  min-width: 0;
  padding: var(--space-md);
  background-color: var(--white);
  border: 1px solid var(--rule);
  border-top: 3px solid var(--ink);
}

.type-index {
  margin: 0 0 8px;
  font-family: Georgia, serif;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.type-item h3 {
  margin: 0 0 8px;
  font-size: 17px;
}

.type-item p {
  margin: 0 0 8px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.type-note {
  padding-top: 8px;
  border-top: 1px solid var(--rule);
  font-size: 13px;
  color: var(--ink);
}

/* 所需信息清单 ---------------------------------------------------------- */

.prepare-list {
  counter-reset: prepare;
  margin-top: var(--space-sm);
  border-top: 1px solid var(--ink);
}

.prepare-list li {
  position: relative;
  padding: var(--space-sm) 0 var(--space-sm) 40px;
  border-bottom: 1px solid var(--rule);
  counter-increment: prepare;
}

.prepare-list li::before {
  content: counter(prepare, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 16px;
  font-family: Georgia, serif;
  font-size: 14px;
  color: var(--accent);
}

.prepare-list h3 {
  margin: 0 0 4px;
  font-size: 16px;
}

.prepare-list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* 处理路径 -------------------------------------------------------------- */

.path-timeline {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-sm);
}

.path-step {
  min-width: 0;
  padding-top: var(--space-sm);
  border-top: 2px solid var(--ink);
}

.step-index {
  margin: 0 0 6px;
  font-family: Georgia, serif;
  font-size: 20px;
  line-height: 1.2;
  color: var(--accent);
}

.path-step h3 {
  margin: 0 0 6px;
  font-size: 16px;
}

.path-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* 不在处理范围（侧栏） -------------------------------------------------- */

.scope-list {
  border-top: 1px solid var(--rule);
}

.scope-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--rule);
}

.scope-list h3 {
  margin: 0 0 4px;
  font-size: 15px;
}

.scope-list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* 反馈页底部关联内容 ---------------------------------------------------- */

.related-content {
  padding: var(--space-lg) 0 var(--space-md);
  border-top: 1px solid var(--ink);
}

.related-content h2 {
  margin-bottom: var(--space-md);
}

.related-content .related-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-md);
}

.related-content .related-list li a {
  display: block;
  padding: var(--space-md);
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
  background-color: var(--white);
  border: 1px solid var(--rule);
}

.related-content .related-list li a:hover {
  color: var(--accent);
  border-color: var(--ink);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   12. pages · 404
   -------------------------------------------------------------------------- */

.error-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: var(--space-xl) var(--gutter);
}

.error-panel {
  max-width: 640px;
  padding: var(--space-lg);
  background-color: var(--white);
  border: 1px solid var(--ink);
  border-top: 4px solid var(--accent);
}

.error-panel h1 {
  margin-bottom: var(--space-sm);
}

.error-lead {
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

.error-paths {
  margin: var(--space-md) 0;
  border-top: 1px solid var(--rule);
}

.error-paths li {
  border-bottom: 1px solid var(--rule);
}

.error-paths li a {
  display: flex;
  align-items: center;
  min-height: 44px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.error-paths li a:hover {
  color: var(--accent);
}

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

.error-note a {
  color: var(--accent);
  text-decoration: underline;
}

.error-home-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: var(--space-sm);
  padding: 6px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--paper);
  background-color: var(--ink);
  border: 1px solid var(--ink);
  border-radius: var(--radius);
}

.error-home-link:hover {
  background-color: var(--accent);
  border-color: var(--accent);
  color: var(--white);
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   13. responsive
   -------------------------------------------------------------------------- */

@media (max-width: 1024px) {
  :root {
    --gutter: 20px;
  }

  .site-nav {
    gap: var(--space-sm);
  }

  .hero-section {
    grid-template-columns: minmax(0, 1fr) minmax(0, 340px);
  }

  .channel-overview {
    grid-template-columns: minmax(0, 1fr) minmax(0, 260px);
  }

  .page-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 260px);
    gap: var(--space-md);
  }

  .special-grid {
    gap: var(--space-md);
  }

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

@media (max-width: 900px) {
  .site-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .header-bar {
    flex-wrap: wrap;
  }

  .hero-section {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-md);
  }

  .hero-copy h1 {
    max-width: none;
  }

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

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

  .channel-side {
    border-top-width: 1px;
  }

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

  .page-aside,
  .layout-aside {
    margin-top: var(--space-md);
  }

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

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

  .intro-methods {
    padding-left: 0;
    padding-top: var(--space-md);
    border-left: 0;
    border-top: 1px solid var(--rule);
  }

  .special-block {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-md);
  }

  .cross-grid,
  .element-grid {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }

  .related-grid {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }

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

  .maintenance-inner {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "title"
      "text"
      "links";
  }
}

@media (max-width: 768px) {
  h2 {
    font-size: 23px;
  }

  .footer-cols {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-md);
  }

  .special-grid {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }

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

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

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

  .gallery-track {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }

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

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

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

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

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

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

  .channel-meta {
    grid-template-columns: 84px minmax(0, 1fr);
  }
}

@media (max-width: 560px) {
  :root {
    --gutter: 16px;
    --space-xl: 40px;
    --space-lg: 28px;
  }

  body {
    font-size: 15px;
  }

  .brand-name {
    font-size: 21px;
  }

  .brand-tagline {
    font-size: 11px;
  }

  .header-bar {
    padding: 12px var(--gutter);
    gap: 10px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

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

  .focus-strip {
    flex-direction: column;
    align-items: flex-start;
  }

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

  .watch-timeline .timeline-step {
    padding-top: 10px;
  }

  .footer-cols {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-md);
  }

  .footer-col {
    border-top: 1px solid var(--rule);
    padding-top: 10px;
  }

  .footer-title {
    margin-bottom: 8px;
  }

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

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

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

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

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

  .confirm-item {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 10px;
  }

  .confirm-num {
    width: 34px;
    height: 34px;
    font-size: 14px;
  }

  .timeline-body {
    padding-left: 30px;
  }

  .timeline-num {
    width: 36px;
    height: 36px;
    left: calc(-1 * var(--space-md) - 19px);
    font-size: 13px;
  }

  .flow-num {
    width: 34px;
    height: 34px;
    left: calc(-1 * var(--space-md) - 18px);
    font-size: 13px;
  }

  .flow-step h3,
  .flow-step p {
    margin-left: 30px;
  }

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

  .channel-meta dt {
    padding-bottom: 0;
    border-bottom: 0;
  }

  .channel-meta dd {
    padding-top: 2px;
  }

  .data-table {
    font-size: 13px;
  }

  .data-table th,
  .data-table td {
    padding: 10px;
  }

  .maintenance-inner {
    padding: var(--space-md);
  }

  .maintenance-links {
    flex-direction: column;
    align-items: stretch;
  }

  .maintenance-links a {
    justify-content: center;
  }

  .entry-link {
    padding: var(--space-sm) var(--space-md);
  }

  .error-panel {
    padding: var(--space-md);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}