/* =========================================================
   麻花天美 · 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================= */

/* ---------------------------------------------------------
   base
   --------------------------------------------------------- */
:root {
  --ink: #131313;
  --ink-soft: #4a4a4a;
  --gray: #8a8a8a;
  --line: #e4e2df;
  --paper: #f7f6f4;
  --white: #ffffff;
  --accent: #b4462f;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --shell: 1120px;
  --ease: 160ms ease;
}

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

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

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

h1,
h2,
h3,
h4,
p,
ul,
ol,
figure,
blockquote {
  margin: 0;
}

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

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

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

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

button {
  font: inherit;
  color: inherit;
  cursor: pointer;
}

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

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

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

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

/* 页头 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: var(--white);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  max-width: var(--shell);
  height: 64px;
  margin: 0 auto;
  padding: 0 24px;
}

.brand-mark {
  display: inline-block;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.2;
  color: var(--ink);
  white-space: nowrap;
}

a.brand-mark:hover {
  color: var(--ink);
}

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

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-item > a {
  display: inline-flex;
  align-items: center;
  height: 64px;
  padding: 0 12px;
  font-size: 15px;
  color: var(--ink-soft);
  border-bottom: 2px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

.nav-item > a:hover {
  color: var(--ink);
}

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

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  background: none;
  border: 1px solid var(--line);
  border-radius: 4px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* 移动抽屉 */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 80;
  width: min(320px, 86vw);
  height: 100vh;
  padding: 0 0 24px;
  overflow-y: auto;
  background-color: var(--white);
  border-left: 1px solid var(--line);
  box-shadow: -12px 0 32px rgba(19, 19, 19, 0.12);
}

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

.drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  padding: 0 20px;
  border-bottom: 1px solid var(--line);
}

.drawer-close {
  width: 44px;
  height: 44px;
  padding: 0;
  font-size: 22px;
  line-height: 1;
  background: none;
  border: 1px solid var(--line);
  border-radius: 4px;
}

.drawer-list {
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
}

.drawer-list > li > a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 48px;
  padding: 10px 20px;
  font-size: 15px;
  border-bottom: 1px solid var(--line);
}

.drawer-list > li:last-child > a {
  border-bottom: 0;
}

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

.drawer-list em {
  font-style: normal;
  font-size: 12px;
  color: var(--gray);
}

.drawer-tasks {
  padding: 16px 20px 0;
}

.drawer-tasks-title {
  margin-bottom: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--gray);
}

.drawer-tasks a {
  display: block;
  padding: 10px 0;
  font-size: 14px;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
}

.drawer-tasks a:last-child {
  border-bottom: 0;
}

/* 主内容容器 */
.inner-main {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 24px 72px;
}

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 48px;
  align-items: start;
}

.layout-shell {
  grid-template-columns: minmax(0, 1fr) 320px;
}

.layout-single {
  display: block;
  max-width: 760px;
  margin: 0 auto;
}

/* 左侧栏页面：aside 在 DOM 中位于主内容之前 */
.sidebar-left {
  grid-template-columns: 260px minmax(0, 1fr);
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 20px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--gray);
}

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

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

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

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

/* 页面标题区 */
.page-header {
  padding-bottom: 20px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--line);
}

.page-title {
  font-size: 34px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--ink);
}

/* 页脚 */
.site-footer {
  flex-shrink: 0;
  background-color: var(--white);
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 48px 24px 32px;
}

.footer-brand .brand-mark {
  margin-bottom: 12px;
}

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

.footer-title {
  margin-bottom: 12px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--gray);
}

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

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

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

.footer-note p {
  font-size: 13px;
  line-height: 1.75;
  color: var(--gray);
}

.footer-bottom {
  border-top: 1px solid var(--line);
}

.copyright {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 16px 24px;
  font-size: 13px;
  color: var(--gray);
}

/* ---------------------------------------------------------
   components
   --------------------------------------------------------- */
/* 通用按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  font-size: 15px;
  font-weight: 500;
  border: 1px solid var(--ink);
  border-radius: 4px;
  transition: background-color var(--ease), color var(--ease),
    border-color var(--ease);
}

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

.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(--white);
}

/* 箭头链接 */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--accent);
}

.link-arrow::after {
  content: "→";
  transition: transform var(--ease);
}

.link-arrow:hover::after {
  transform: translateX(3px);
}

/* 正文链接 */
.text-link {
  display: inline-block;
  font-size: 14px;
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
}

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

/* 编号 */
.track-index,
.condition-index,
.card-index,
.note-category,
.stage-index,
.stage-num,
.step-no,
.scene-num,
.entry-no,
.path-no,
.scope-num,
.handoff-num,
.category-no,
.error-code {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
}

/* 图片容器 */
.hero-media,
.directions-media,
.section-media,
.scene-figure,
.section-figure,
.media-figure,
.content-figure {
  margin: 0;
}

.hero-media img,
.directions-media img,
.section-media img,
.scene-figure img,
.section-figure img,
.media-figure img,
.content-figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: 4px;
  background-color: var(--paper);
}

figcaption,
.hero-media figcaption,
.directions-media figcaption,
.media-caption,
.figure-caption {
  margin-top: 8px;
  padding-top: 8px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--gray);
  border-top: 1px solid var(--line);
}

/* 表格通用 */
.table-scroll {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 4px;
  background-color: var(--white);
}

.data-table,
.field-table,
.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.65;
}

.data-table caption,
.table-caption {
  padding: 12px 16px;
  font-size: 13px;
  text-align: left;
  color: var(--gray);
  border-bottom: 1px solid var(--line);
}

.data-table th,
.data-table td,
.field-table th,
.field-table td,
.compare-table th,
.compare-table td {
  padding: 12px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

.data-table thead th,
.field-table thead th,
.compare-table thead th {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  background-color: var(--paper);
  white-space: nowrap;
}

.data-table tbody tr:nth-child(even),
.field-table tbody tr:nth-child(even),
.compare-table tbody tr:nth-child(even) {
  background-color: #fbfaf9;
}

.data-table tbody tr:last-child td,
.field-table tbody tr:last-child td,
.compare-table tbody tr:last-child td {
  border-bottom: 0;
}

.field-table tbody th {
  width: 34%;
  font-weight: 500;
  color: var(--ink);
}

/* 内页 section 通用 */
.section,
.section-block {
  margin-bottom: 48px;
}

.section-title {
  margin-bottom: 8px;
  font-size: 22px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
}

.section-intro,
.section-lead {
  margin-bottom: 20px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.section-footnote {
  margin-top: 16px;
  font-size: 13px;
  color: var(--gray);
}

/* 侧栏通用 */
.content-aside,
.page-aside {
  display: flex;
  flex-direction: column;
  gap: 24px;
  min-width: 0;
}

.aside-block {
  padding: 20px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: 4px;
}

.aside-title {
  margin-bottom: 12px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
}

.aside-text,
.aside-intro {
  margin-bottom: 12px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.aside-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 32px;
  font-size: 14px;
  font-weight: 500;
  color: var(--accent);
}

.aside-link::after {
  content: "→";
  transition: transform var(--ease);
}

.aside-link:hover::after {
  transform: translateX(3px);
}

.aside-list,
.aside-link-list,
.aside-links {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.aside-list > li > a,
.aside-link-list > li > a,
.aside-links > li > a {
  display: block;
  padding: 8px 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
}

.aside-list > li:last-child > a,
.aside-link-list > li:last-child > a,
.aside-links > li:last-child > a {
  border-bottom: 0;
}

.aside-list > li > a:hover,
.aside-link-list > li > a:hover,
.aside-links > li > a:hover {
  color: var(--accent);
}

/* ---------------------------------------------------------
   pages
   --------------------------------------------------------- */
/* ===== 首页 ===== */
.home-main {
  padding-bottom: 0;
}

/* 首屏 */
.hero {
  background-color: var(--white);
  border-bottom: 1px solid var(--line);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  align-items: center;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 56px 24px;
}

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

.hero-eyebrow {
  margin-bottom: 12px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--accent);
}

.hero-copy h1 {
  margin-bottom: 16px;
  font-size: 40px;
  font-weight: 600;
  line-height: 1.25;
  color: var(--ink);
}

.hero-lead {
  max-width: 34em;
  margin-bottom: 24px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-soft);
}

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

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

.hero-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: 4px;
  background-color: var(--paper);
}

/* 栏目索引带 */
.channel-band {
  background-color: var(--paper);
  border-bottom: 1px solid var(--line);
}

.channel-inner {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 32px 24px;
}

.channel-title {
  margin-bottom: 16px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--gray);
}

.channel-list {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}

.channel-item {
  border-right: 1px solid var(--line);
}

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

.channel-item > a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-height: 100%;
  padding: 14px 14px 16px;
  transition: background-color var(--ease);
}

.channel-item > a:hover {
  background-color: var(--white);
}

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

.channel-question {
  font-size: 12px;
  line-height: 1.6;
  color: var(--gray);
}

.channel-item.is-current .channel-name {
  color: var(--accent);
}

/* 首页通用 section */
.section-inner {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 24px;
}

.section-head {
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.section-head h2 {
  margin-bottom: 8px;
  font-size: 22px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
}

.section-desc {
  max-width: 46em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* 产品方向轨道 */
.directions {
  padding: 56px 0 0;
}

.directions-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 48px;
  align-items: start;
}

.track {
  min-width: 0;
}

.track-vertical {
  position: relative;
  padding-left: 0;
}

.track-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 16px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.track-item:last-child {
  border-bottom: 1px solid var(--line);
}

.track-index {
  display: block;
  padding-top: 2px;
  font-size: 14px;
  font-weight: 600;
}

.track-content {
  min-width: 0;
}

.track-title {
  margin-bottom: 6px;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
}

.track-text {
  margin-bottom: 6px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.track-content .link-arrow {
  margin-top: 4px;
}

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

.directions-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: 4px;
  background-color: var(--paper);
}

/* 选型条件清单 */
.conditions {
  padding: 56px 0 0;
}

.conditions-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 48px;
  align-items: start;
}

.condition-list {
  min-width: 0;
}

.condition-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.condition-item:last-child {
  border-bottom: 1px solid var(--line);
}

.condition-index {
  grid-row: 1 / span 3;
  padding-top: 3px;
  font-size: 14px;
  font-weight: 600;
}

.condition-name {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
}

.condition-text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.condition-record {
  padding-top: 6px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--gray);
  border-top: 1px dashed var(--line);
}

.condition-aside {
  padding: 20px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: 4px;
}

/* 应用行业网格 */
.industries {
  padding: 56px 0 0;
}

.industry-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.industry-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px;
  background-color: var(--white);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: border-color var(--ease);
}

.industry-card:hover {
  border-color: var(--ink);
}

.card-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.card-title {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
}

.card-index {
  font-size: 13px;
}

.card-env {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.card-focus {
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray);
}

.industry-card .link-arrow {
  margin-top: auto;
  padding-top: 8px;
}

/* 技术资料条目行 */
.notes {
  padding: 56px 0 0;
}

.note-rows {
  border-top: 1px solid var(--line);
}

.note-row {
  display: grid;
  grid-template-columns: 160px 140px minmax(0, 1fr) 96px;
  gap: 16px;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  transition: border-color var(--ease);
}

.note-row:hover {
  border-bottom-color: var(--ink);
}

.note-category {
  font-size: 14px;
  font-weight: 600;
}

.note-reader {
  font-size: 13px;
  color: var(--gray);
}

.note-question {
  min-width: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-soft);
}

.note-row .link-arrow {
  justify-self: end;
  font-size: 13px;
}

/* 合作流程阶段轨道 */
.stages {
  padding: 56px 0 0;
}

.stage-track {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}

.stage-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px 20px 0;
  border-right: 1px solid var(--line);
}

.stage-item:last-child {
  border-right: 0;
  padding-right: 0;
}

.stage-item:not(:first-child) {
  padding-left: 20px;
}

.stage-index {
  font-size: 13px;
  font-weight: 600;
}

.stage-name {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
}

.stage-action {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.stage-handover {
  padding-top: 6px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--gray);
  border-top: 1px dashed var(--line);
}

/* 服务支持三列 */
.support {
  padding: 56px 0 72px;
}

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

.support-col {
  padding: 20px;
  background-color: var(--white);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.support-col-title {
  margin-bottom: 12px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
}

.support-list > li {
  position: relative;
  padding-left: 14px;
  margin-bottom: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.support-list > li::before {
  content: "";
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 5px;
  height: 1px;
  background-color: var(--accent);
}

/* ===== 内页公共页头区 ===== */
.page-head,
.page-hero,
.page-title-block {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 32px 24px 0;
}

.page-lead {
  max-width: 52em;
  margin-bottom: 12px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-meta,
.meta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-bottom: 20px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--gray);
  border-bottom: 1px solid var(--line);
}

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

.meta-item {
  color: var(--gray);
}

/* ===== 产品中心 ===== */
.page-products .page-head {
  padding-top: 32px;
}

.page-products .page-layout {
  padding-top: 32px;
}

.page-products .page-header {
  margin-bottom: 32px;
}

.section-block .section-title {
  margin-bottom: 8px;
}

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

.field-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.field-item {
  flex: 1 1 180px;
  min-width: 0;
  padding: 10px 12px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.field-label {
  display: block;
  margin-bottom: 2px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--gray);
}

.field {
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink);
}

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

.entry-index {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
}

.entry-title {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
}

.entry-text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.entry-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 32px;
  font-size: 14px;
  font-weight: 500;
  color: var(--accent);
}

.entry-link::after {
  content: "→";
  transition: transform var(--ease);
}

.entry-link:hover::after {
  transform: translateX(3px);
}

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

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

.diff-title {
  margin-bottom: 4px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
}

.diff-item p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ===== 选型指南 ===== */
.page-selection .page-top {
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 24px 0;
}

.page-selection .page-heading {
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.page-selection .breadcrumb {
  margin-bottom: 20px;
}

.page-selection .page-title {
  margin-bottom: 12px;
}

.page-selection .layout-single {
  padding-top: 32px;
}

.step-track {
  border-top: 1px solid var(--line);
}

.step-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.step-no {
  padding-top: 3px;
  font-size: 14px;
  font-weight: 600;
}

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

.step-name {
  margin-bottom: 4px;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
}

.step-desc {
  margin-bottom: 6px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.step-record {
  padding-top: 6px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--gray);
  border-top: 1px dashed var(--line);
}

.section-media {
  margin-bottom: 48px;
}

.section-media .media-frame {
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
  background-color: var(--paper);
}

.section-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.section-media .media-caption {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

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

.misjudge-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.misjudge-claim {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink);
}

.misjudge-claim::before {
  content: "误判";
  display: inline-block;
  margin-right: 8px;
  padding: 1px 6px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 3px;
  vertical-align: 2px;
}

.misjudge-fix {
  padding-left: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

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

.next-links > li {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.next-links a {
  display: flex;
  align-items: center;
  min-height: 64px;
  padding: 14px 18px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
  transition: background-color var(--ease), color var(--ease);
}

.next-links a:hover {
  background-color: var(--white);
  color: var(--accent);
}

/* ===== 应用行业 ===== */
.page-industries .page-hero {
  padding-top: 32px;
}

.page-industries .page-layout {
  padding-top: 32px;
}

.side-index {
  padding: 20px;
  background-color: var(--white);
  border: 1px solid var(--line);
  border-radius: 4px;
}

.side-index-title {
  margin-bottom: 12px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--gray);
}

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

.side-index-list > li:last-child {
  border-bottom: 0;
}

.side-index-list a {
  display: block;
  padding: 10px 0 10px 12px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-soft);
  border-left: 2px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

.side-index-list a:hover {
  color: var(--ink);
}

.side-index-list > li.is-current a {
  color: var(--accent);
  font-weight: 600;
  border-left-color: var(--accent);
}

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

.page-content {
  min-width: 0;
}

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

.scene-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 16px;
}

.scene-num {
  font-size: 13px;
  font-weight: 600;
}

.scene-title {
  font-size: 22px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
}

.scene-figure {
  margin-bottom: 16px;
}

.scene-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: 4px;
  background-color: var(--paper);
}

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

.scene-desc {
  margin-bottom: 12px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.scene-subtitle {
  margin-bottom: 8px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
}

.scene-cond-list {
  margin-bottom: 12px;
  border-top: 1px solid var(--line);
}

.scene-cond-list > li {
  position: relative;
  padding: 8px 0 8px 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
}

.scene-cond-list > li::before {
  content: "";
  position: absolute;
  top: 1.05em;
  left: 0;
  width: 6px;
  height: 1px;
  background-color: var(--accent);
}

.scene-link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.scene-matrix {
  padding-top: 8px;
}

.scene-matrix .section-title {
  margin-bottom: 8px;
}

.scene-matrix .section-lead {
  margin-bottom: 16px;
}

/* ===== 技术资料 ===== */
.page-notes .page-hero {
  padding-top: 32px;
}

.page-notes .page-layout {
  padding-top: 32px;
}

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

.category-item {
  padding: 18px;
  background-color: var(--white);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.category-no {
  margin-bottom: 6px;
  font-size: 12px;
  font-weight: 600;
}

.category-name {
  margin-bottom: 6px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
}

.category-q {
  margin-bottom: 6px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.category-reader {
  font-size: 13px;
  line-height: 1.6;
  color: var(--gray);
}

.section-figure {
  margin-bottom: 16px;
}

.section-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: 4px;
  background-color: var(--paper);
}

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

.entry-row {
  display: grid;
  grid-template-columns: 48px 120px 120px minmax(0, 1fr) 88px;
  gap: 16px;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  transition: border-color var(--ease);
}

.entry-row:hover {
  border-bottom-color: var(--ink);
}

.entry-no {
  font-size: 13px;
  font-weight: 600;
}

.entry-cat {
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
}

.entry-reader {
  font-size: 13px;
  color: var(--gray);
}

.entry-q {
  min-width: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-soft);
}

.entry-link {
  justify-self: end;
  font-size: 13px;
}

.path-steps {
  border-top: 1px solid var(--line);
}

.path-step {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.path-no {
  grid-row: 1 / span 3;
  padding-top: 2px;
  font-size: 14px;
  font-weight: 600;
}

.path-name {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
}

.path-action {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.path-output {
  font-size: 13px;
  line-height: 1.6;
  color: var(--gray);
}

/* ===== 服务支持 ===== */
.page-support .page-head {
  padding-top: 32px;
}

.page-support .page-layout {
  padding-top: 32px;
}

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

.scope-item {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.scope-num {
  padding-top: 3px;
  font-size: 14px;
  font-weight: 600;
}

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

.scope-name {
  margin-bottom: 4px;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
}

.scope-when {
  margin-bottom: 4px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.scope-help {
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray);
}

.routing-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.routing-col {
  padding: 20px;
  background-color: var(--white);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.routing-title {
  margin-bottom: 12px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
}

.routing-list {
  margin-bottom: 12px;
}

.routing-list > li {
  position: relative;
  padding: 8px 0 8px 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
  border-bottom: 1px solid var(--line);
}

.routing-list > li:last-child {
  border-bottom: 0;
}

.routing-list > li::before {
  content: "";
  position: absolute;
  top: 1.05em;
  left: 0;
  width: 6px;
  height: 1px;
  background-color: var(--accent);
}

.routing-entry {
  padding-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray);
  border-top: 1px solid var(--line);
}

.support-media .media-figure {
  margin-bottom: 12px;
}

.support-media .media-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: 4px;
  background-color: var(--paper);
}

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

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

.prepare-item {
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.prepare-name {
  margin-bottom: 4px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
}

.prepare-item p {
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.aside-entry {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

/* ===== 合作流程 ===== */
.page-cooperation .page-title-block {
  padding-top: 32px;
}

.page-cooperation .page-layout {
  padding-top: 32px;
}

.page-cooperation .stage-track {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}

.page-cooperation .stage-step {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px 20px 0;
  border-right: 1px solid var(--line);
}

.page-cooperation .stage-step:not(:first-child) {
  padding-left: 20px;
}

.page-cooperation .stage-step:last-child {
  border-right: 0;
  padding-right: 0;
}

.stage-num {
  font-size: 13px;
  font-weight: 600;
}

.stage-goal {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-cooperation .stage-action {
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-cooperation .stage-handoff {
  padding-top: 6px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--gray);
  border-top: 1px dashed var(--line);
}

.prepare-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.prepare-col {
  padding: 20px;
  background-color: var(--white);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.prepare-col-title {
  margin-bottom: 12px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
}

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

.handoff-item {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.handoff-num {
  grid-row: 1 / span 3;
  padding-top: 2px;
  font-size: 14px;
  font-weight: 600;
}

.handoff-name {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
}

.handoff-owner {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.handoff-use {
  font-size: 13px;
  line-height: 1.6;
  color: var(--gray);
}

.content-figure {
  margin-top: 8px;
}

.content-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: 4px;
  background-color: var(--paper);
}

/* ===== 404 ===== */
.site-error .error-main {
  display: block;
}

.error-hero {
  border-bottom: 1px solid var(--line);
  background-color: var(--white);
}

.error-inner {
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 72px 24px;
}

.error-code {
  margin-bottom: 12px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.error-title {
  margin-bottom: 12px;
  font-size: 34px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--ink);
}

.error-desc {
  max-width: 42em;
  margin-bottom: 24px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.error-home-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  font-size: 15px;
  font-weight: 500;
  color: var(--white);
  background-color: var(--ink);
  border: 1px solid var(--ink);
  border-radius: 4px;
  transition: background-color var(--ease), border-color var(--ease);
}

.error-home-link:hover {
  background-color: var(--accent);
  border-color: var(--accent);
  color: var(--white);
}

.error-paths {
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 24px 72px;
}

.error-paths-title {
  margin-bottom: 16px;
  font-size: 20px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
}

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

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

.error-path-item > a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 52px;
  padding: 12px 0;
  font-size: 15px;
  color: var(--ink);
  transition: color var(--ease);
}

.error-path-item > a:hover {
  color: var(--accent);
}

.error-path-item em {
  font-style: normal;
  font-size: 13px;
  color: var(--gray);
}

/* ---------------------------------------------------------
   responsive
   --------------------------------------------------------- */
@media (max-width: 960px) {
  .header-inner {
    height: 56px;
    padding: 0 20px;
  }

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

  .site-nav {
    display: none;
  }

  .nav-list {
    display: none;
  }

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

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
    padding: 40px 20px;
  }

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

  .channel-inner {
    padding: 28px 20px;
  }

  .channel-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .channel-item:nth-child(4n) {
    border-right: 0;
  }

  .channel-item:nth-child(-n + 4) {
    border-bottom: 1px solid var(--line);
  }

  .section-inner {
    padding: 0 20px;
  }

  .directions,
  .conditions,
  .industries,
  .notes,
  .stages {
    padding-top: 40px;
  }

  .support {
    padding: 40px 0 56px;
  }

  .directions-body,
  .conditions-body {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

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

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

  .note-row {
    grid-template-columns: 140px 120px minmax(0, 1fr) 88px;
    gap: 12px;
  }

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

  .stage-item,
  .page-cooperation .stage-step {
    border-bottom: 1px solid var(--line);
  }

  .stage-item:nth-child(2n),
  .page-cooperation .stage-step:nth-child(2n) {
    border-right: 0;
    padding-right: 0;
  }

  .stage-item:nth-child(2n + 1),
  .page-cooperation .stage-step:nth-child(2n + 1) {
    padding-left: 0;
  }

  .stage-item:nth-child(2n),
  .page-cooperation .stage-step:nth-child(2n) {
    padding-left: 20px;
  }

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

  .support-col:last-child {
    grid-column: 1 / -1;
  }

  .inner-main {
    padding: 0 20px 56px;
  }

  .page-layout,
  .layout-shell {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

  .content-aside,
  .page-aside {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }

  .aside-block {
    margin: 0;
  }

  /* 左侧栏页面：aside 在 DOM 中先于主内容，手机上仍须位于 H1 与正文之后 */
  .sidebar-left {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

  .sidebar-left > .side-index {
    order: 2;
  }

  .sidebar-left > .page-content {
    order: 1;
  }

  .side-index {
    padding: 16px;
  }

  .side-index-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    border-top: 1px solid var(--line);
  }

  .side-index-list > li {
    flex: 1 1 50%;
    border-bottom: 1px solid var(--line);
  }

  .side-index-list a {
    padding: 10px 8px 10px 12px;
    border-left: 2px solid transparent;
  }

  .page-head,
  .page-hero,
  .page-title-block {
    padding: 24px 20px 0;
  }

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

  .page-selection .page-top {
    padding: 24px 20px 0;
  }

  .page-products .page-layout,
  .page-support .page-layout,
  .page-notes .page-layout,
  .page-industries .page-layout,
  .page-cooperation .page-layout,
  .page-selection .layout-single {
    padding-top: 24px;
  }

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

  .category-item:last-child {
    grid-column: 1 / -1;
  }

  .entry-row {
    grid-template-columns: 40px minmax(0, 1fr) 80px;
    grid-template-areas:
      "no cat link"
      "no reader link"
      "no q link";
    gap: 4px 12px;
    align-items: start;
  }

  .entry-no {
    grid-area: no;
  }

  .entry-cat {
    grid-area: cat;
  }

  .entry-reader {
    grid-area: reader;
  }

  .entry-q {
    grid-area: q;
  }

  .entry-link {
    grid-area: link;
    align-self: center;
  }

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

  .routing-col,
  .prepare-col {
    border-right: 1px solid var(--line);
  }

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

  .next-links > li:last-child {
    grid-column: 1 / -1;
  }

  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 32px;
    padding: 40px 20px 24px;
  }

  .copyright {
    padding: 16px 20px;
  }

  .error-inner {
    padding: 48px 20px;
  }

  .error-title {
    font-size: 28px;
  }

  .error-paths {
    padding: 32px 20px 56px;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
    line-height: 1.8;
  }

  .header-inner {
    gap: 12px;
  }

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

  .hero-inner {
    padding: 32px 16px;
    gap: 24px;
  }

  .hero-copy h1 {
    font-size: 26px;
    line-height: 1.32;
  }

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

  .hero-actions {
    gap: 10px;
  }

  .hero-actions .btn {
    flex: 1 1 auto;
    padding: 0 16px;
  }

  .channel-inner {
    padding: 24px 16px;
  }

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

  .channel-item:nth-child(4n) {
    border-right: 1px solid var(--line);
  }

  .channel-item:nth-child(2n) {
    border-right: 0;
  }

  .channel-item:nth-child(-n + 4) {
    border-bottom: 0;
  }

  .channel-item:not(:last-child) {
    border-bottom: 1px solid var(--line);
  }

  .channel-item > a {
    padding: 12px 12px 14px;
  }

  .section-inner {
    padding: 0 16px;
  }

  .section-head {
    margin-bottom: 20px;
    padding-bottom: 12px;
  }

  .section-head h2,
  .section-title,
  .scene-title {
    font-size: 20px;
  }

  .section-desc,
  .section-intro,
  .section-lead {
    font-size: 14px;
  }

  .directions,
  .conditions,
  .industries,
  .notes,
  .stages {
    padding-top: 32px;
  }

  .support {
    padding: 32px 0 48px;
  }

  .track-item {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 12px;
    padding: 16px 0;
  }

  .condition-item {
    grid-template-columns: 32px minmax(0, 1fr);
    gap: 4px 12px;
    padding: 16px 0;
  }

  .condition-name,
  .track-title {
    font-size: 16px;
  }

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

  .industry-card {
    padding: 16px;
  }

  .note-row {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "cat link"
      "reader link"
      "q link";
    gap: 4px 12px;
    align-items: start;
    padding: 14px 0;
  }

  .note-category {
    grid-area: cat;
  }

  .note-reader {
    grid-area: reader;
  }

  .note-question {
    grid-area: q;
  }

  .note-row .link-arrow {
    grid-area: link;
    align-self: center;
  }

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

  .stage-item,
  .page-cooperation .stage-step {
    padding: 16px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .stage-item:nth-child(2n),
  .page-cooperation .stage-step:nth-child(2n) {
    padding-left: 0;
  }

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

  .support-col:last-child {
    grid-column: auto;
  }

  .support-col {
    padding: 16px;
  }

  .inner-main {
    padding: 0 16px 48px;
  }

  .page-head,
  .page-hero,
  .page-title-block {
    padding: 20px 16px 0;
  }

  .page-selection .page-top {
    padding: 20px 16px 0;
  }

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

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

  .page-meta,
  .meta-bar {
    padding-bottom: 16px;
  }

  .page-header {
    padding-bottom: 16px;
    margin-bottom: 24px;
  }

  .breadcrumb {
    margin-bottom: 16px;
    font-size: 12px;
  }

  .section,
  .section-block {
    margin-bottom: 32px;
  }

  .aside-block {
    padding: 16px;
  }

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

  .step-item,
  .scope-item,
  .path-step,
  .handoff-item {
    grid-template-columns: 32px minmax(0, 1fr);
    gap: 4px 12px;
    padding: 14px 0;
  }

  .step-name,
  .scope-name,
  .path-name,
  .handoff-name {
    font-size: 16px;
  }

  .section-media img,
  .scene-figure img,
  .section-figure img,
  .media-figure img,
  .content-figure img {
    aspect-ratio: 4 / 3;
  }

  .misjudge-claim {
    font-size: 15px;
  }

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

  .next-links > li:last-child {
    grid-column: auto;
  }

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

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

  .side-index {
    padding: 14px;
  }

  .side-index-list > li {
    flex: 1 1 100%;
  }

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

  .data-table th,
  .data-table td,
  .field-table th,
  .field-table td,
  .compare-table th,
  .compare-table td {
    padding: 10px 12px;
  }

  .field-table tbody th {
    width: 38%;
  }

  .field-item {
    flex: 1 1 100%;
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
    padding: 32px 16px 20px;
  }

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

  .footer-nav .footer-list > li,
  .footer-tasks .footer-list > li {
    margin-bottom: 4px;
  }

  .footer-list a {
    display: block;
    padding: 6px 0;
  }

  .copyright {
    padding: 14px 16px;
  }

  .error-inner {
    padding: 40px 16px;
  }

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

  .error-paths {
    padding: 28px 16px 48px;
  }

  .error-path-item > a {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    padding: 12px 0;
  }
}

/* 动效增强：仅在支持且未要求减少动态时生效，不影响初始可见性 */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

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

/* 程序验收反馈：移动端正文优先 */
@media (max-width: 768px) {
  .site-main :is(.page-content, .main-content, .content-main) {
    order: 1;
  }

  .site-main :is(aside, .sidebar) {
    order: 2;
  }
}