/* =========================================================
   光棍手机影院 · 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================= */

/* ---------------------------------------------------------
   base
   --------------------------------------------------------- */
:root {
  --bg: #FBF7F0;
  --ink: #2E2721;
  --ink-soft: #6B5F53;
  --accent: #C4562A;
  --line: #E4D9C8;
  --card: #FFFDF9;
  --radius: 6px;
  --shell: 1120px;
  --mono: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", "Courier New", monospace;
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  font-weight: 400;
}

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

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

a:hover {
  text-decoration: underline;
}

h1,
h2,
h3 {
  margin: 0;
  font-weight: 600;
  line-height: 1.35;
  color: var(--ink);
}

p {
  margin: 0;
}

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

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

button {
  font: inherit;
  color: inherit;
}

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

.visually-hidden,
.table-caption {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  flex: 0 0 auto;
}

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

.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 4px;
  background: var(--accent);
  position: relative;
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 9px 7px;
  border-top: 2px solid #FFFDF9;
  border-bottom: 2px solid #FFFDF9;
}

.brand-text {
  font-size: 18px;
  font-weight: 600;
}

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

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

.nav-list a {
  display: inline-block;
  padding: 8px 12px;
  font-size: 15px;
  color: var(--ink-soft);
  border-bottom: 2px solid transparent;
}

.nav-list a:hover {
  color: var(--ink);
  text-decoration: none;
}

.nav-list a.is-current {
  color: var(--ink);
  font-weight: 600;
  border-bottom-color: var(--accent);
}

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

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

.site-footer {
  margin-top: 56px;
  background: var(--card);
  border-top: 1px solid var(--line);
}

.footer-inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 40px 24px 24px;
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 32px;
}

.footer-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--ink);
}

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

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

.footer-list a {
  font-size: 14px;
  color: var(--ink-soft);
}

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

.footer-bottom {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 14px 24px 26px;
  border-top: 1px solid var(--line);
}

.footer-copy {
  font-size: 13px;
  color: var(--ink-soft);
}

/* 内页公共外壳 */
.inner-main {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 24px 24px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 20px 0 0;
  font-size: 13px;
  color: var(--ink-soft);
}

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

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

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

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

.page-header {
  padding: 14px 0 22px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 28px;
}

.page-title {
  font-size: 30px;
  font-weight: 600;
  color: var(--ink);
}

.page-description {
  margin-top: 10px;
  max-width: 760px;
  font-size: 15px;
  color: var(--ink-soft);
}

.page-meta {
  margin-top: 10px;
  font-size: 13px;
  color: var(--ink-soft);
  font-family: var(--mono);
}

/* 内页双栏：默认正文在前，aside 在后 */
.page-layout,
.layout-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 240px;
  gap: 36px;
  align-items: start;
}

/* 侧栏在前的页面 */
.layout-shell.sidebar-left,
.page-layout.sidebar-left {
  grid-template-columns: 240px minmax(0, 1fr);
}

/* 祖先节点带 sidebar-left 时同样把侧栏置于左侧 */
.sidebar-left .page-layout,
.sidebar-left .layout-shell {
  grid-template-columns: 240px minmax(0, 1fr);
}

.sidebar,
.layout-aside {
  position: sticky;
  top: 76px;
  font-size: 14px;
}

.sidebar-title,
.aside-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.sidebar-note,
.aside-note {
  margin-top: 12px;
  font-size: 13px;
  color: var(--ink-soft);
}

.sidebar-list li,
.tree-list li,
.topic-tree-list li {
  border-bottom: 1px solid var(--line);
}

.sidebar-list a,
.tree-list a,
.topic-tree-list a {
  display: block;
  padding: 9px 8px;
  color: var(--ink-soft);
  font-size: 14px;
}

.sidebar-list a:hover,
.tree-list a:hover,
.topic-tree-list a:hover {
  color: var(--accent);
  background: var(--card);
  text-decoration: none;
}

.tree-link.is-current,
.sidebar-list a.is-current,
.topic-tree-list a.is-current {
  color: var(--ink);
  font-weight: 600;
  border-left: 3px solid var(--accent);
  padding-left: 10px;
}

.tree-item.is-current a {
  color: var(--ink);
  font-weight: 600;
}

.tree-foot {
  margin-top: 12px;
  font-size: 13px;
}

.tree-foot a {
  margin-right: 12px;
}

.sidebar-nav-secondary {
  margin-top: 22px;
}

/* ---------------------------------------------------------
   components · 通用区块与元素
   --------------------------------------------------------- */
.section {
  padding: 34px 0;
  border-top: 1px solid var(--line);
}

.section:first-child {
  border-top: 0;
  padding-top: 0;
}

.section-head {
  margin-bottom: 20px;
}

.section-title {
  font-size: 22px;
  font-weight: 600;
}

.section-intro,
.section-lead,
.section-text {
  margin-top: 8px;
  font-size: 15px;
  color: var(--ink-soft);
  max-width: 760px;
}

.section-foot {
  margin-top: 16px;
  font-size: 14px;
}

.section-note {
  margin-top: 14px;
  font-size: 14px;
}

.section-note a {
  margin-right: 14px;
}

.link-arrow::after {
  content: " →";
}

.link-inline {
  margin-right: 14px;
  font-size: 14px;
}

.sub-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
}

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

.btn-primary {
  background: var(--accent);
  color: #FFFDF9;
}

.btn-primary:hover {
  background: #AE4820;
}

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

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

/* 表格通用 */
.channel-table,
.mini-table,
.data-table {
  font-size: 15px;
}

.channel-table th,
.channel-table td,
.mini-table th,
.mini-table td,
.data-table th,
.data-table td {
  padding: 11px 12px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.channel-table thead th,
.mini-table thead th,
.data-table thead th {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-soft);
  border-bottom: 2px solid var(--line);
  white-space: nowrap;
}

.channel-table tbody tr:hover,
.data-table tbody tr:hover {
  background: var(--card);
}

.table-scroll,
.table-wrap,
.channel-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.table-footnote {
  margin-top: 12px;
  font-size: 14px;
}

/* 图片容器 */
.hero-figure,
.collection-figure,
.collection-cover,
.figure-block,
.media-figure,
.sample-figure,
.section-figure,
.record-figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card);
}

.hero-figure img,
.collection-figure img,
.collection-cover img,
.figure-block img,
.media-figure img,
.sample-figure img,
.section-figure img,
.record-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.figure-block figcaption,
.sample-figure figcaption,
.section-figure figcaption,
.record-figure figcaption,
.figure-caption {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
}

/* 列表条目通用 */
.boundary-list,
.point-list,
.pairing-list,
.next-list,
.impact-list {
  margin-top: 4px;
}

.boundary-item,
.point-item,
.pairing-item,
.next-item {
  padding: 10px 0 10px 22px;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  color: var(--ink-soft);
  position: relative;
}

.boundary-item::before,
.point-item::before,
.pairing-item::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 20px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

/* FAQ / details */
.faq-list,
.misstep-list {
  margin-top: 6px;
}

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

.faq-question,
.misstep-summary {
  padding: 14px 30px 14px 0;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  position: relative;
  list-style: none;
}

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

.faq-question::after,
.misstep-summary::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent);
  font-size: 18px;
  line-height: 1;
}

.faq-item[open] .faq-question::after,
.misstep-item[open] .misstep-summary::after {
  content: "–";
}

.faq-answer,
.misstep-text {
  padding: 0 0 16px;
  font-size: 15px;
  color: var(--ink-soft);
  max-width: 720px;
}

/* ---------------------------------------------------------
   pages · 首页
   --------------------------------------------------------- */
.top-notice {
  background: var(--ink);
  color: #F3EADF;
  text-align: center;
}

.top-notice p {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 9px 24px;
  font-size: 13px;
}

.home-main {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 24px;
}

.hero {
  padding: 40px 0 36px;
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

.hero-title {
  font-size: 30px;
  font-weight: 600;
}

.hero-slogan {
  margin-top: 12px;
  font-size: 17px;
  color: var(--accent);
}

.hero-desc {
  margin-top: 12px;
  font-size: 15px;
  color: var(--ink-soft);
  max-width: 560px;
}

.hero-actions {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-aside {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.hero-quick {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  padding: 16px 18px;
}

.hero-quick-title {
  font-size: 15px;
  font-weight: 600;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.quick-list {
  margin-top: 4px;
}

.quick-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: baseline;
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.quick-no {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
}

.quick-name {
  color: var(--ink);
}

.quick-range {
  color: var(--ink-soft);
  font-size: 13px;
  text-align: right;
}

.quick-more {
  display: inline-block;
  margin-top: 12px;
  font-size: 14px;
}

.section-channels .channel-table {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.section-channels .channel-table th,
.section-channels .channel-table td {
  padding: 12px 14px;
}

.cell-no {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  white-space: nowrap;
  width: 68px;
}

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

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

.cell-near {
  color: var(--ink-soft);
  font-size: 14px;
  white-space: nowrap;
}

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

.collection-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

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

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

.collection-name {
  font-size: 18px;
  font-weight: 600;
}

.collection-meta,
.collection-channels {
  margin-top: 8px;
  font-size: 13px;
  color: var(--accent);
  font-family: var(--mono);
}

.collection-idea,
.collection-note {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-soft);
}

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

.step-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.step-no {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
}

.step-name {
  font-size: 17px;
  font-weight: 600;
}

.step-check,
.step-confirm {
  font-size: 14px;
  color: var(--ink-soft);
}

.step-link,
.step-entry {
  margin-top: auto;
  font-size: 14px;
}

.fields-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

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

.fields-subtitle {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
}

.mini-table {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.mini-table th,
.mini-table td {
  padding: 10px 12px;
  font-size: 14px;
}

.fields-foot {
  margin-top: 12px;
  font-size: 14px;
}

.fields-col-boundary .boundary-list {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  padding: 6px 16px;
}

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

.record-group {
  border-top: 2px solid var(--accent);
  padding-top: 12px;
  min-width: 0;
}

.record-month {
  font-size: 16px;
  font-weight: 600;
  font-family: var(--mono);
}

.record-item {
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  color: var(--ink-soft);
}

.record-target {
  display: block;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 4px;
}

.column-index {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  padding: 6px 18px;
}

.column-index-list {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.column-index-item {
  border-right: 1px solid var(--line);
  min-width: 0;
}

.column-index-item:last-child {
  border-right: 0;
}

.column-index-item a {
  display: block;
  padding: 14px 12px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

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

.index-note {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  font-weight: 400;
  color: var(--ink-soft);
}

/* ---------------------------------------------------------
   pages · 频道分类
   --------------------------------------------------------- */
.page-channels .content-column,
.page-fields .content-column {
  min-width: 0;
}

.page-channels .channel-table {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-channels .channel-table th,
.page-channels .channel-table td {
  padding: 12px 14px;
}

.page-channels .col-code {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  white-space: nowrap;
}

.page-channels .col-theme {
  font-weight: 600;
}

.page-channels .col-scope,
.page-channels .col-next {
  color: var(--ink-soft);
  font-size: 14px;
}

.page-channels .channel-row .cell-field {
  color: var(--ink-soft);
}

.channel-tree .tree-link {
  display: block;
  padding: 9px 8px;
  color: var(--ink-soft);
  font-size: 14px;
}

.scope-group {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.scope-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.scope-text {
  font-size: 15px;
  color: var(--ink-soft);
  max-width: 720px;
}

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

.adjacent-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  padding: 14px 16px;
}

.adjacent-from {
  font-size: 15px;
  font-weight: 600;
}

.adjacent-to {
  margin-top: 6px;
  font-size: 14px;
  color: var(--ink-soft);
}

.path-steps {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.path-step {
  border-left: 3px solid var(--accent);
  padding: 4px 0 4px 16px;
}

.path-step-title {
  font-size: 16px;
  font-weight: 600;
}

.path-step-text {
  margin-top: 6px;
  font-size: 15px;
  color: var(--ink-soft);
}

.path-links {
  margin-top: 18px;
}

/* ---------------------------------------------------------
   pages · 专题片单
   --------------------------------------------------------- */
.page-collections .content-main,
.page-guide .content-main {
  min-width: 0;
}

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

.page-collections .collection-cover img {
  aspect-ratio: 16 / 9;
}

.page-collections .collection-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
}

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

.map-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  border-bottom: 1px solid var(--line);
}

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

.map-head {
  background: var(--bg);
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-soft);
}

.map-cell {
  padding: 12px 14px;
  font-size: 14px;
  min-width: 0;
}

.map-cell + .map-cell {
  border-left: 1px solid var(--line);
}

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

.idea-item {
  border-top: 2px solid var(--accent);
  padding-top: 12px;
  min-width: 0;
}

.idea-name {
  font-size: 16px;
  font-weight: 600;
}

.idea-text {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-soft);
}

.pairing-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 28px;
}

/* ---------------------------------------------------------
   pages · 浏览指引
   --------------------------------------------------------- */
.page-guide .step-list {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.page-guide .step-item {
  gap: 10px;
}

.page-guide .step-detail {
  font-size: 14px;
  color: var(--ink-soft);
}

.confirm-group {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.confirm-block {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  padding: 16px 18px;
}

.confirm-heading {
  font-size: 16px;
  font-weight: 600;
}

.confirm-text {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-soft);
}

.page-guide .section-figure {
  margin-bottom: 18px;
}

.page-guide .section-figure img {
  aspect-ratio: 21 / 9;
}

.page-guide .point-list {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  padding: 6px 18px;
}

.page-guide .next-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 28px;
}

.page-guide .next-item {
  padding-left: 0;
}

/* ---------------------------------------------------------
   pages · 字段说明
   --------------------------------------------------------- */
.page-fields .data-table {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-fields .field-name {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--accent);
  white-space: nowrap;
}

.page-fields .field-desc {
  color: var(--ink-soft);
  font-size: 14px;
}

.content-section {
  padding: 30px 0;
  border-top: 1px solid var(--line);
}

.content-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.sample-compare {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.sample-notes {
  min-width: 0;
}

.field-list {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  padding: 6px 16px;
}

.field-list dt {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  padding-top: 12px;
}

.field-list dd {
  margin: 0;
  padding: 4px 0 12px;
  font-size: 14px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
}

.field-list dd:last-child {
  border-bottom: 0;
}

.page-fields .boundary-list {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  padding: 6px 18px;
}

.usage-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.usage-card {
  border-top: 2px solid var(--accent);
  padding-top: 12px;
  min-width: 0;
}

.usage-card p {
  font-size: 14px;
  color: var(--ink-soft);
}

/* ---------------------------------------------------------
   pages · 整理记录
   --------------------------------------------------------- */
.page-records .layout-content {
  min-width: 0;
}

.page-records .record-figure {
  margin-bottom: 26px;
}

.page-records .record-figure img {
  aspect-ratio: 21 / 9;
}

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

.month-tree .tree-item a {
  display: block;
  padding: 9px 8px;
  color: var(--ink-soft);
  font-size: 14px;
}

.month-tree .tree-item.is-current a {
  color: var(--ink);
  font-weight: 600;
  border-left: 3px solid var(--accent);
  padding-left: 10px;
}

.month-block {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.month-title {
  font-size: 18px;
  font-weight: 600;
  font-family: var(--mono);
  margin-bottom: 10px;
}

.page-records .record-list {
  counter-reset: rec;
}

.page-records .record-item {
  position: relative;
  padding: 12px 0 12px 34px;
  border-bottom: 1px dashed var(--line);
  font-size: 14px;
  color: var(--ink-soft);
}

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

.page-records .record-item::before {
  counter-increment: rec;
  content: counter(rec, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 14px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
}

.page-records .record-line {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  color: var(--ink);
}

.page-records .record-desc {
  display: block;
}

.reason-table {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
}

.reason-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  border-bottom: 1px solid var(--line);
}

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

.reason-head {
  background: var(--bg);
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-soft);
}

.reason-cell {
  padding: 12px 14px;
  font-size: 14px;
  min-width: 0;
}

.reason-object {
  font-weight: 600;
}

.reason-why {
  color: var(--ink-soft);
  border-left: 1px solid var(--line);
}

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

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

.impact-name {
  font-size: 16px;
  font-weight: 600;
}

.impact-text {
  margin-top: 8px;
  font-size: 14px;
  color: var(--ink-soft);
}

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

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

.read-subtitle {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.read-text {
  font-size: 15px;
  color: var(--ink-soft);
}

.read-foot {
  margin-top: 18px;
  font-size: 14px;
}

.read-foot a {
  margin-right: 16px;
}

/* ---------------------------------------------------------
   pages · 404
   --------------------------------------------------------- */
.error-main {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 56px 24px 24px;
}

.error-panel {
  max-width: 640px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  padding: 32px;
}

.error-code {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 10px;
}

.error-main h1 {
  font-size: 30px;
  font-weight: 600;
}

.error-text {
  margin-top: 12px;
  font-size: 15px;
  color: var(--ink-soft);
}

.error-list {
  margin: 22px 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 20px;
}

.error-list li {
  border-bottom: 1px solid var(--line);
  padding: 8px 0;
  font-size: 15px;
}

.error-action {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: var(--radius);
  background: var(--accent);
  color: #FFFDF9;
  font-weight: 600;
  font-size: 15px;
}

.error-action:hover {
  background: #AE4820;
  text-decoration: none;
}

/* ---------------------------------------------------------
   responsive
   --------------------------------------------------------- */
@media (max-width: 1024px) {
  .header-inner,
  .footer-inner,
  .home-main,
  .inner-main,
  .footer-bottom,
  .error-main {
    padding-left: 20px;
    padding-right: 20px;
  }

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

  .page-layout,
  .layout-shell,
  .layout-shell.sidebar-left,
  .page-layout.sidebar-left,
  .sidebar-left .page-layout,
  .sidebar-left .layout-shell {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
  }

  .sidebar,
  .layout-aside {
    position: static;
  }

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

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

  .record-groups,
  .idea-list,
  .usage-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .column-index-item:nth-child(3n) {
    border-right: 0;
  }

  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 16px;
  }

  .header-inner {
    padding: 10px 16px;
    gap: 12px;
    flex-wrap: wrap;
  }

  .brand-text {
    font-size: 16px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    flex: 1 1 100%;
    margin-left: 0;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    border-top: 1px solid var(--line);
    padding-top: 6px;
  }

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

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

  .nav-list a {
    display: block;
    padding: 12px 4px;
    font-size: 15px;
    border-bottom: 0;
  }

  .nav-list a.is-current {
    border-bottom: 0;
    border-left: 3px solid var(--accent);
    padding-left: 10px;
  }

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

  .footer-inner,
  .footer-bottom {
    padding-left: 16px;
    padding-right: 16px;
  }

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

  .hero {
    padding: 26px 0 24px;
  }

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

  .hero-slogan {
    font-size: 16px;
  }

  .hero-actions .btn {
    flex: 1 1 100%;
  }

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

  .section {
    padding: 26px 0;
  }

  .section-title {
    font-size: 19px;
  }

  .section-collections .collection-grid,
  .page-collections .collection-grid,
  .step-list,
  .page-guide .step-list,
  .record-groups,
  .idea-list,
  .usage-grid,
  .confirm-group,
  .impact-list,
  .read-grid,
  .sample-compare,
  .adjacent-grid,
  .path-steps,
  .pairing-list,
  .page-guide .next-list,
  .error-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .quick-item {
    grid-template-columns: 34px minmax(0, 1fr);
  }

  .quick-range {
    grid-column: 2;
    text-align: left;
  }

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

  .column-index-item {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

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

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

  .map-cell + .map-cell,
  .reason-why {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .page-records .record-item {
    padding-left: 30px;
  }

  .error-panel {
    padding: 22px 18px;
  }

  .error-main h1 {
    font-size: 23px;
  }
}