/* =========================================================
   天美传媒片 daolian2019.com
   全站样式表
   分组：base / layout / components / pages / responsive
   ========================================================= */

/* ---------------------------------------------------------
   base
   --------------------------------------------------------- */
:root {
  --bg-page: #f4f2ec;
  --bg-panel: #ffffff;
  --ink: #1c211e;
  --ink-soft: #59615c;
  --line: #d8d3c6;
  --ink-dark: #12171a;
  --ink-dark-text: #d8e4dc;
  --status: #1f8a5f;
  --status-soft: #e6f2ea;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Noto Sans Mono CJK SC", monospace;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --wrap: 1120px;
  --read: 760px;
  --radius: 6px;
  --gap: 24px;
}

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

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

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

h1,
h2,
h3,
h4,
p,
figure,
blockquote,
dl,
dd {
  margin: 0;
}

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

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

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

a:hover {
  color: var(--status);
}

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
  background: none;
  border: 0;
}

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

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

/* ---------------------------------------------------------
   layout —— 全站骨架
   --------------------------------------------------------- */
.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

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

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

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

.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.brand-mark {
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
  line-height: 1.3;
}

.brand-slogan {
  font-size: 12px;
  color: var(--ink-soft);
  line-height: 1.5;
}

/* 主导航 */
.site-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav-link {
  display: inline-block;
  padding: 6px 0;
  font-size: 15px;
  color: var(--ink-soft);
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.nav-link:hover {
  color: var(--ink);
  border-bottom-color: var(--line);
}

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

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

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

/* 移动端导航面板 */
.mobile-nav {
  display: none;
  border-top: 1px solid var(--line);
  background: var(--bg-panel);
  padding: 8px 16px 20px;
}

.mobile-nav-close {
  display: block;
  margin-left: auto;
  width: 44px;
  height: 44px;
  font-size: 22px;
  line-height: 1;
  color: var(--ink-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 8px;
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 0 4px;
  font-size: 16px;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
}

.mobile-nav-link.is-active {
  color: var(--status);
  font-weight: 600;
}

/* 面包屑（全站统一） */
.breadcrumb {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 20px 24px 0;
  font-size: 14px;
  color: var(--ink-soft);
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--ink-soft);
}

.breadcrumb-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--ink-soft);
}

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

.breadcrumb-link {
  font-size: 14px;
  color: var(--ink-soft);
}

.breadcrumb-link:hover {
  color: var(--status);
}

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

/* 内页 main 内的面包屑（与顶部面包屑同视觉） */
.inner-main .breadcrumb {
  max-width: none;
  margin: 0;
  padding: 20px 0 0;
  font-size: 14px;
  color: var(--ink-soft);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.inner-main .breadcrumb a {
  font-size: 14px;
  color: var(--ink-soft);
}

.inner-main .breadcrumb a:hover {
  color: var(--status);
}

.breadcrumb-sep {
  color: var(--line);
  font-size: 14px;
}

.breadcrumb-current {
  color: var(--ink);
  font-size: 14px;
}

/* 页标题区（全站统一） */
.page-header {
  padding: 18px 0 4px;
}

.page-title {
  font-family: var(--font-mono);
  font-size: 38px;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.32;
  color: var(--ink);
}

/* 页脚 */
.site-footer {
  flex-shrink: 0;
  background: var(--ink-dark);
  color: var(--ink-dark-text);
  margin-top: 0;
}

.footer-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 48px 24px 40px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.3fr;
  gap: 36px 32px;
}

.footer-mark {
  display: block;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: #f2f6f3;
  margin-bottom: 10px;
}

.footer-slogan {
  font-size: 14px;
  line-height: 1.7;
  color: #a9b8ae;
  margin-bottom: 10px;
}

.footer-boundary {
  font-size: 13px;
  line-height: 1.7;
  color: #7e8d84;
}

.footer-title {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: #8fa197;
  margin-bottom: 12px;
  text-transform: uppercase;
}

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

.footer-link {
  font-size: 14px;
  color: #c3d0c7;
  line-height: 1.6;
}

.footer-link:hover {
  color: #ffffff;
}

.footer-link.is-active {
  color: #6fd3a3;
  font-weight: 600;
}

.footer-text {
  font-size: 13px;
  line-height: 1.75;
  color: #a9b8ae;
  margin-bottom: 12px;
}

.footer-copy {
  font-size: 12px;
  line-height: 1.7;
  color: #6d7c73;
}

/* ---------------------------------------------------------
   components —— 通用组件
   --------------------------------------------------------- */
.section-title {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.4;
  color: var(--ink);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
  margin-bottom: 20px;
  max-width: 78ch;
}

.section-head {
  margin-bottom: 4px;
}

.section-num {
  font-family: var(--font-mono);
  color: var(--status);
  margin-right: 10px;
}

.text-link {
  display: inline-block;
  font-size: 14px;
  color: var(--status);
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
}

.text-link:hover {
  border-bottom-color: var(--status);
  color: var(--status);
}

.inline-link {
  color: var(--status);
  border-bottom: 1px solid var(--status);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid var(--line);
  transition: border-color 0.15s ease, color 0.15s ease, background-color 0.15s ease;
}

.btn-primary {
  background: var(--ink-dark);
  color: var(--ink-dark-text);
  border-color: var(--ink-dark);
}

.btn-primary:hover {
  background: #1c2428;
  color: #ffffff;
  border-color: var(--status);
}

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

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

/* 图片容器 */
figure {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-panel);
}

figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.figure-caption {
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
  background: var(--bg-panel);
}

/* 折叠 FAQ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 18px;
}

.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-panel);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 52px;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

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

.faq-question::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--status);
}

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

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

.faq-answer {
  padding: 14px 16px 16px;
}

.faq-answer p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* 说明条目列表 */
.note-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.note-item {
  display: flex;
  gap: 14px;
  padding: 16px 18px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.note-index {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--status);
  line-height: 1.8;
}

.note-text {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.note-title {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 6px;
}

/* 通用相关链接列表 */
.related-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.related-item {
  padding: 12px 16px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.related-link {
  font-size: 15px;
  color: var(--ink);
}

.related-link:hover {
  color: var(--status);
}

.related-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* ---------------------------------------------------------
   pages —— 首页
   --------------------------------------------------------- */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 420px);
  gap: 40px;
  align-items: start;
  padding: 44px 0 56px;
  border-bottom: 1px solid var(--line);
}

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

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--status);
  margin-bottom: 14px;
}

.hero-lead h1 {
  font-family: var(--font-mono);
  font-size: 38px;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.32;
  color: var(--ink);
  margin-bottom: 18px;
}

.hero-desc {
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
  max-width: 56ch;
  margin-bottom: 24px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

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

/* 终端片段卡 */
.hero-term {
  min-width: 0;
}

.term-card {
  background: var(--ink-dark);
  border-radius: var(--radius);
  padding: 22px 22px 18px;
  color: var(--ink-dark-text);
}

.term-card-title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #7f9489;
  margin-bottom: 10px;
}

.term-card-lines {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 18px;
}

.term-card-lines li {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-dark-text);
  display: flex;
  gap: 8px;
  word-break: break-word;
}

.term-prefix {
  flex: 0 0 auto;
  color: var(--status);
}

.term-card-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: #9fb3a8;
  padding-top: 14px;
  border-top: 1px solid #263036;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--status);
  flex: 0 0 auto;
}

/* 编辑焦点与趋势专题 */
.focus-pair {
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
}

.focus-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
}

.focus-editor,
.focus-trend {
  min-width: 0;
  display: flex;
  flex-direction: column;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
}

.focus-media {
  aspect-ratio: 16 / 9;
  margin-bottom: 16px;
  border: 0;
}

.focus-heading {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
  margin-bottom: 10px;
}

.focus-text {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
  margin-bottom: 14px;
}

.focus-points {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}

.focus-points li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

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

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

.focus-links li {
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--line);
}

.focus-links li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.focus-editor .text-link,
.focus-trend .text-link {
  margin-top: auto;
}

/* 频道目录速览 */
.channel-lines {
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
}

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

.channel-row {
  display: grid;
  grid-template-columns: 56px minmax(120px, 180px) minmax(0, 1fr) auto;
  align-items: center;
  gap: 16px;
  padding: 16px 4px;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.15s ease;
}

.channel-row:hover {
  background: var(--bg-panel);
}

.channel-num,
.channel-no {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--status);
}

.channel-name {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.channel-dir,
.channel-scope {
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-soft);
  min-width: 0;
}

.channel-link {
  font-size: 14px;
  color: var(--status);
  white-space: nowrap;
}

.channel-link:hover {
  color: var(--ink);
}

/* 年度档案年份索引 */
.year-index {
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
}

.year-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
}

.year-tab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.15s ease, background-color 0.15s ease, color 0.15s ease;
}

.year-tab:hover,
.year-tab.is-active {
  background: var(--status-soft);
  border-color: var(--status);
  color: var(--status);
}

.year-note {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
  margin-bottom: 16px;
  max-width: 78ch;
}

/* 术语索引摘录 */
.term-excerpt {
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
}

.term-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 32px;
  margin-bottom: 18px;
  border-top: 1px solid var(--line);
}

.term-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  padding: 14px 2px;
  border-bottom: 1px solid var(--line);
  min-width: 0;
}

.term-name {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.term-def {
  flex: 1 1 200px;
  min-width: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* 常见误区三条 */
.misconception-list {
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
}

/* 栏目入口卡片 */
.entry-cards {
  padding: 48px 0 8px;
}

.entry-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.entry-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.15s ease;
}

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

.entry-num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--status);
}

.entry-name {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}

.entry-purpose {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

.entry-card .text-link {
  margin-top: auto;
}

/* ---------------------------------------------------------
   pages —— 内页共用
   --------------------------------------------------------- */
.page-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 400px);
  gap: 36px;
  align-items: start;
  padding: 22px 0 32px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 40px;
}

.page-head-text,
.page-head-lead {
  min-width: 0;
}

.page-lead,
.page-intro {
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
  max-width: 62ch;
}

.page-kicker,
.section-kicker {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--status);
  margin-bottom: 12px;
}

.page-head-media,
.page-head-figure {
  aspect-ratio: 16 / 10;
  width: 100%;
}

.page-head-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 16px;
}

.page-head-facts li {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-soft);
  padding-left: 14px;
  position: relative;
}

.page-head-facts li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--status);
}

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

.page-head-stacked .page-head-figure {
  aspect-ratio: 21 / 9;
  max-height: 300px;
}

/* 通用双栏文档布局（主内容在前，aside 在后） */
.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 240px;
  gap: 40px;
  align-items: start;
}

/* 侧栏在前的布局 */
.sidebar-left {
  grid-template-columns: 240px minmax(0, 1fr);
}

.sidebar-left .rule-main,
.sidebar-left .archive-main {
  min-width: 0;
}

/* 内页区块间距 */
.inner-main > section {
  margin-bottom: 44px;
}

.inner-main > section:last-child {
  margin-bottom: 0;
}

/* ---------------------------------------------------------
   pages —— 年度档案
   --------------------------------------------------------- */
.year-rail {
  position: sticky;
  top: 96px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 16px;
}

.rail-title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 12px;
}

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

.year-tag {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-page);
  transition: border-color 0.15s ease, background-color 0.15s ease, color 0.15s ease;
}

.year-tag:hover,
.year-tag.is-active {
  background: var(--status-soft);
  border-color: var(--status);
  color: var(--status);
}

.rail-note {
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.archive-main {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.year-group {
  scroll-margin-top: 96px;
}

.month-block {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  margin-bottom: 14px;
}

.month-title {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--line);
  margin-bottom: 10px;
}

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

.entry-link {
  display: inline-block;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
  padding-left: 16px;
  position: relative;
}

.entry-link::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--status);
  font-family: var(--font-mono);
}

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

.archive-note,
.next-links {
  padding-top: 4px;
}

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

.next-link {
  display: inline-block;
  font-size: 15px;
  color: var(--status);
  padding-left: 16px;
  position: relative;
}

.next-link::before {
  content: "›";
  position: absolute;
  left: 0;
  font-family: var(--font-mono);
}

.next-link:hover {
  color: var(--ink);
}

/* ---------------------------------------------------------
   pages —— 频道目录
   --------------------------------------------------------- */
.channel-directory .channel-list {
  border-top: 1px solid var(--line);
}

.channel-directory .channel-row {
  grid-template-columns: 56px minmax(110px, 150px) minmax(0, 1.2fr) minmax(0, 1fr) auto;
}

.channel-fit {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
  min-width: 0;
}

.channel-directory .channel-link a {
  color: var(--status);
  font-size: 14px;
  white-space: nowrap;
}

.channel-directory .channel-link a:hover {
  color: var(--ink);
}

.channel-topic-map {
  margin-top: 8px;
}

.map-table {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

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

.map-table thead th {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  text-align: left;
  padding: 12px 16px;
  background: var(--bg-page);
  border-bottom: 1px solid var(--line);
}

.map-table tbody th,
.map-table tbody td {
  padding: 12px 16px;
  font-size: 15px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

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

.map-table tbody th {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--ink);
  width: 40%;
}

.map-table tbody td a {
  color: var(--status);
}

.map-table tbody td a:hover {
  color: var(--ink);
}

.directory-note .note-item {
  display: block;
}

.channel-related {
  margin-top: 40px;
}

/* ---------------------------------------------------------
   pages —— 专题解读
   --------------------------------------------------------- */
.structure-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-bottom: 8px;
}

.structure-column {
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
}

.structure-step {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--status);
  margin-bottom: 8px;
}

.structure-title {
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 10px;
}

.structure-desc {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
  margin-bottom: 14px;
}

.structure-points {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: auto;
}

.structure-points li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
}

.structure-points li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--line);
  font-family: var(--font-mono);
}

.topic-rows {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.topic-row {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 16px;
  padding: 18px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.15s ease;
}

.topic-row:hover {
  border-color: var(--status);
}

.topic-row-index {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--status);
  line-height: 1.8;
}

.topic-row-body {
  min-width: 0;
}

.topic-row-title {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 6px;
}

.topic-row-desc {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
  margin-bottom: 10px;
}

.topic-row-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
}

.topic-row-links li a {
  font-size: 14px;
  color: var(--status);
}

.topic-row-links li a:hover {
  color: var(--ink);
}

.prepare-step-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}

.prepare-step {
  min-width: 0;
  padding: 18px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.prepare-step-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--status);
  margin-bottom: 8px;
}

.prepare-step-title {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
}

.prepare-step-desc {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.boundary-note {
  padding: 18px 20px;
  background: var(--ink-dark);
  border-radius: var(--radius);
  color: var(--ink-dark-text);
}

.boundary-title {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: #f2f6f3;
  margin-bottom: 8px;
}

.boundary-text {
  font-size: 14px;
  line-height: 1.8;
  color: #a9b8ae;
}

.topic-related .related-links {
  flex-direction: row;
  flex-wrap: wrap;
  gap: 12px 24px;
}

/* ---------------------------------------------------------
   pages —— 术语索引
   --------------------------------------------------------- */
.term-table .term-group {
  margin-bottom: 26px;
}

.term-group-title {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--status);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 4px;
}

.term-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 32px;
}

.term-list .term-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  padding: 12px 2px;
  border-bottom: 1px solid var(--line);
  min-width: 0;
}

.confusable-pairs .pair-block {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 16px;
}

.pair-side {
  min-width: 0;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-panel);
}

.pair-wrong {
  border-left: 3px solid #b65c4a;
}

.pair-right {
  border-left: 3px solid var(--status);
}

.pair-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

.pair-right .pair-label {
  color: var(--status);
}

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

.term-note .note-item {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.term-note .note-item .text-link {
  align-self: flex-start;
}

/* ---------------------------------------------------------
   pages —— 常见误区
   --------------------------------------------------------- */
.accordion {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 8px;
}

.accordion-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-panel);
}

.accordion-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  min-height: 56px;
  padding: 14px 18px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

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

.accordion-summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--status);
}

.accordion-item[open] .accordion-summary::after {
  content: "−";
}

.accordion-item[open] .accordion-summary {
  border-bottom: 1px solid var(--line);
}

.accordion-body {
  padding: 16px 18px 18px;
}

.accordion-verdict {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
}

.accordion-body p:not(.accordion-verdict) {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.step-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-bottom: 8px;
}

.step-item {
  min-width: 0;
  padding: 18px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.step-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--status);
  margin-bottom: 8px;
}

.step-name {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
}

.step-text {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.boundary-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.boundary-item {
  padding: 16px 18px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--status);
  border-radius: var(--radius);
}

.boundary-name {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 6px;
}

.boundary-item .boundary-text {
  color: var(--ink-soft);
}

/* ---------------------------------------------------------
   pages —— 编务说明
   --------------------------------------------------------- */
.rule-index {
  position: sticky;
  top: 96px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 16px;
}

.rule-index-title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 12px;
}

.rule-index-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 14px;
}

.rule-index-link {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 12px;
  font-size: 14px;
  color: var(--ink);
  border: 1px solid transparent;
  border-radius: var(--radius);
  transition: border-color 0.15s ease, background-color 0.15s ease, color 0.15s ease;
}

.rule-index-link:hover {
  border-color: var(--status);
  background: var(--status-soft);
  color: var(--status);
}

.rule-index-note {
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.rule-main {
  display: flex;
  flex-direction: column;
  gap: 44px;
}

.rule-section {
  scroll-margin-top: 96px;
}

.rule-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.rule-item {
  padding: 16px 18px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.rule-name {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 6px;
}

.rule-text {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.verify-steps {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.verify-step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 4px 14px;
  padding: 16px 18px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.verify-num {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--status);
  line-height: 1.6;
}

.verify-name {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.verify-text {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.feedback-block {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-bottom: 18px;
}

.feedback-item {
  min-width: 0;
  padding: 18px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.feedback-title {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
}

.feedback-text {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.section-footnote {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
  padding: 12px 16px;
  background: var(--status-soft);
  border-radius: var(--radius);
}

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

.material-item {
  padding: 14px 18px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.material-name {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 4px;
}

.material-text {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.editorial-links {
  padding-top: 4px;
}

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

.editorial-link {
  display: inline-block;
  font-size: 15px;
  color: var(--status);
  padding-left: 16px;
  position: relative;
}

.editorial-link::before {
  content: "›";
  position: absolute;
  left: 0;
  font-family: var(--font-mono);
}

.editorial-link:hover {
  color: var(--ink);
}

/* ---------------------------------------------------------
   pages —— 404
   --------------------------------------------------------- */
.error-main {
  display: block;
  max-width: var(--read);
  margin: 0 auto;
  padding: 64px 24px 80px;
}

.error-block {
  padding-bottom: 32px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 32px;
}

.error-code {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.1em;
  color: var(--status);
  margin-bottom: 12px;
}

.error-title {
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.35;
  color: var(--ink);
  margin-bottom: 14px;
}

.error-text {
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
  margin-bottom: 24px;
  max-width: 60ch;
}

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

.error-home,
.error-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid var(--line);
  background: var(--bg-panel);
  color: var(--ink);
  transition: border-color 0.15s ease, color 0.15s ease;
}

.error-home {
  background: var(--ink-dark);
  border-color: var(--ink-dark);
  color: var(--ink-dark-text);
}

.error-home:hover {
  border-color: var(--status);
  color: #ffffff;
}

.error-link:hover {
  border-color: var(--status);
  color: var(--status);
}

.error-guide-title {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 16px;
}

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

.error-guide-list li a {
  display: inline-block;
  font-size: 15px;
  color: var(--status);
  padding-left: 16px;
  position: relative;
}

.error-guide-list li a::before {
  content: "›";
  position: absolute;
  left: 0;
  font-family: var(--font-mono);
}

.error-guide-list li a:hover {
  color: var(--ink);
}

/* ---------------------------------------------------------
   responsive
   --------------------------------------------------------- */
@media (max-width: 1024px) {
  .header-inner {
    padding: 12px 20px;
  }

  .nav-list {
    gap: 16px;
  }

  .nav-link {
    font-size: 14px;
  }

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

  .breadcrumb {
    padding-left: 20px;
    padding-right: 20px;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    padding: 32px 0 44px;
  }

  .hero-lead h1 {
    font-size: 32px;
  }

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

  .hero-term {
    max-width: 560px;
  }

  .focus-grid {
    gap: 24px;
  }

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

  .page-head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
    gap: 28px;
  }

  .page-title {
    font-size: 32px;
  }

  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 32px 28px;
  }

  /* 档案：年份索引改为顶部横向条 */
  .page-layout.sidebar-left {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .year-rail {
    position: static;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px 16px;
    padding: 14px 16px;
  }

  .year-rail .rail-title {
    margin-bottom: 0;
    flex: 0 0 auto;
  }

  .year-list {
    flex-direction: row;
    flex-wrap: wrap;
    margin-bottom: 0;
  }

  .year-rail .rail-note {
    flex: 1 1 100%;
    padding-top: 10px;
  }

  .rule-index {
    position: static;
  }

  .structure-columns {
    gap: 18px;
  }

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

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

  .feedback-item:last-child {
    grid-column: span 2;
  }
}

@media (max-width: 760px) {
  /* 页头与移动导航 */
  .header-inner {
    padding: 10px 16px;
    gap: 12px;
  }

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

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

  .site-nav {
    display: none;
  }

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

  .mobile-nav:not([hidden]) {
    display: block;
  }

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

  .breadcrumb {
    padding: 16px 16px 0;
  }

  .home-main,
  .inner-main {
    padding-left: 16px;
    padding-right: 16px;
    padding-bottom: 56px;
  }

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

  .page-title {
    font-size: 28px;
    line-height: 1.4;
  }

  .page-header {
    padding: 14px 0 2px;
  }

  /* 首页 */
  .hero {
    padding: 24px 0 36px;
    gap: 22px;
  }

  .hero-eyebrow {
    font-size: 12px;
    margin-bottom: 10px;
  }

  .hero-lead h1 {
    font-size: 28px;
    line-height: 1.4;
    margin-bottom: 14px;
  }

  .hero-desc {
    font-size: 15px;
    margin-bottom: 20px;
  }

  .hero-actions {
    margin-bottom: 22px;
  }

  .btn {
    flex: 1 1 auto;
    min-height: 46px;
    padding: 0 16px;
  }

  .term-card {
    padding: 18px 16px 14px;
  }

  .focus-pair,
  .channel-lines,
  .year-index,
  .term-excerpt,
  .misconception-list {
    padding: 36px 0;
  }

  .entry-cards {
    padding: 36px 0 4px;
  }

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

  .focus-editor,
  .focus-trend {
    padding: 16px;
  }

  .section-title {
    font-size: 17px;
    margin-bottom: 12px;
  }

  .section-desc {
    font-size: 14px;
    margin-bottom: 16px;
  }

  /* 频道行：五段改块状 */
  .channel-row,
  .channel-directory .channel-row {
    grid-template-columns: 40px minmax(0, 1fr);
    grid-template-areas:
      "num name"
      "num dir"
      "num fit"
      "num link";
    gap: 4px 12px;
    align-items: start;
    padding: 14px 2px;
  }

  .channel-num,
  .channel-no {
    grid-area: num;
    line-height: 1.6;
  }

  .channel-name {
    grid-area: name;
    font-size: 15px;
  }

  .channel-dir,
  .channel-scope {
    grid-area: dir;
    font-size: 14px;
  }

  .channel-fit {
    grid-area: fit;
    font-size: 14px;
  }

  .channel-link {
    grid-area: link;
    white-space: normal;
    font-size: 14px;
    padding-top: 2px;
  }

  .channel-directory .channel-link a {
    white-space: normal;
  }

  .channel-row:not(.channel-directory .channel-row) .channel-link {
    grid-column: 2;
  }

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

  .term-row {
    padding: 12px 2px;
  }

  .entry-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }

  /* 内页标题区 */
  .page-head {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
    padding: 18px 0 26px;
    margin-bottom: 32px;
  }

  .page-head-media,
  .page-head-figure {
    aspect-ratio: 16 / 9;
    max-height: 240px;
  }

  .page-head-stacked .page-head-figure {
    aspect-ratio: 16 / 9;
    max-height: 220px;
  }

  .page-lead,
  .page-intro {
    font-size: 15px;
  }

  .page-head-facts {
    gap: 6px 14px;
    margin-top: 12px;
  }

  .page-head-facts li {
    font-size: 12px;
  }

  /* 档案 */
  .year-rail {
    padding: 12px 14px;
    gap: 10px 12px;
  }

  .year-tag {
    min-height: 44px;
    padding: 0 12px;
    font-size: 14px;
  }

  .month-block {
    padding: 14px 14px;
  }

  .archive-main {
    gap: 32px;
  }

  /* 频道目录表格拆卡 */
  .map-table,
  .map-table thead,
  .map-table tbody,
  .map-table tr,
  .map-table th,
  .map-table td {
    display: block;
    width: 100%;
  }

  .map-table thead {
    display: none;
  }

  .map-table tbody tr {
    border-bottom: 1px solid var(--line);
    padding: 12px 14px;
  }

  .map-table tbody tr:last-child {
    border-bottom: 0;
  }

  .map-table tbody th,
  .map-table tbody td {
    border-bottom: 0;
    padding: 2px 0;
  }

  .map-table tbody th {
    font-size: 14px;
    color: var(--ink-soft);
  }

  .map-table tbody td {
    font-size: 15px;
  }

  /* 专题 */
  .structure-columns {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }

  .topic-row {
    grid-template-columns: 32px minmax(0, 1fr);
    gap: 10px;
    padding: 14px;
  }

  .prepare-step-list {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
    margin-bottom: 22px;
  }

  .prepare-step {
    padding: 16px;
  }

  .topic-related .related-links {
    flex-direction: column;
    gap: 10px;
  }

  /* 术语 */
  .confusable-pairs .pair-block {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  .pair-side {
    padding: 14px 16px;
  }

  /* 误区 */
  .step-list {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }

  .accordion-summary {
    padding: 14px 16px;
    font-size: 14px;
    min-height: 52px;
  }

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

  /* 编务 */
  .rule-main {
    gap: 34px;
  }

  .verify-step {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
    padding: 14px 16px;
  }

  .verify-num {
    grid-row: auto;
  }

  .feedback-block {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }

  .feedback-item:last-child {
    grid-column: auto;
  }

  /* 页脚 */
  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    padding: 36px 16px 32px;
  }

  .footer-nav-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px 20px;
  }

  .footer-link {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
  }

  /* 404 */
  .error-main {
    padding: 44px 16px 60px;
  }

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

  .error-home,
  .error-link {
    flex: 1 1 auto;
  }
}

@media (max-width: 480px) {
  .brand-slogan {
    display: none;
  }

  .hero-lead h1 {
    font-size: 26px;
  }

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

  .btn {
    width: 100%;
  }

  .term-card-lines li {
    font-size: 12px;
  }

  .channel-row,
  .channel-directory .channel-row {
    grid-template-columns: 34px minmax(0, 1fr);
  }

  .term-name {
    font-size: 14px;
  }

  .term-def {
    flex-basis: 100%;
  }

  .error-code {
    font-size: 14px;
  }

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

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}