/* ==========================================================================
   麻豆传媒映画 · 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

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

:root {
  --bg-page: #F4F7F6;
  --bg-card: #FFFFFF;
  --bg-soft: #F7FAF9;
  --bg-tint: #EAF6F2;
  --bg-head: #F1F7F5;
  --ink-strong: #0E2A2B;
  --ink-muted: #5B6B6A;
  --brand: #1F8A70;
  --brand-deep: #176F5B;
  --brand-soft: #7FD1B9;
  --line: #E2E8E6;
  --warn: #D97706;
  --radius-s: 4px;
  --radius-m: 6px;
  --radius-l: 8px;
  --wrap: 1180px;
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "SFMono-Regular", "JetBrains Mono", Consolas, "Liberation Mono", Menlo, monospace;
}

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

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

body.site-body {
  margin: 0;
  background: var(--bg-page);
  color: var(--ink-strong);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: 600;
  line-height: 1.35;
  color: var(--ink-strong);
}

p {
  margin: 0;
}

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

a {
  color: var(--brand);
  text-decoration: none;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

a:hover {
  color: var(--brand-deep);
}

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

figure {
  margin: 0;
}

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

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

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

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

/* --------------------------------------------------------------------------
   2. layout —— 骨架容器
   -------------------------------------------------------------------------- */

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

.header-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
  min-height: 68px;
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-main {
  display: block;
}

.inner-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px 64px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 22px 0 6px;
  font-size: 14px;
  color: var(--ink-muted);
}

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

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

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

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

.page-header {
  padding: 4px 0 18px;
  border-bottom: 1px solid var(--line);
}

.page-title {
  font-size: 40px;
  font-weight: 600;
  color: var(--ink-strong);
}

.site-footer {
  margin-top: 40px;
  background: var(--bg-card);
  border-top: 1px solid var(--line);
}

.footer-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr) minmax(0, 1.2fr);
  gap: 40px;
}

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

.footer-bottom p {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 18px 24px 26px;
  font-size: 13px;
  color: var(--ink-muted);
}

/* --------------------------------------------------------------------------
   3. components —— 页头 / 导航 / 通用模块
   -------------------------------------------------------------------------- */

.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex-shrink: 0;
  color: var(--ink-strong);
}

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

.brand-name {
  font-size: 19px;
  font-weight: 600;
  line-height: 1.3;
}

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

.site-nav {
  flex: 1 1 auto;
  min-width: 0;
}

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

.nav-item {
  position: relative;
}

.nav-item > a {
  display: inline-flex;
  align-items: center;
  height: 68px;
  padding: 0 12px;
  font-size: 15px;
  color: var(--ink-strong);
  border-bottom: 2px solid transparent;
}

.nav-item > a:hover {
  color: var(--brand);
  border-bottom-color: var(--brand-soft);
}

.nav-item > a.is-current {
  color: var(--brand);
  border-bottom-color: var(--brand);
}

.nav-item.has-dropdown > a::after {
  content: "";
  width: 5px;
  height: 5px;
  margin-left: 6px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
}

.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 190px;
  padding: 8px 0;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  box-shadow: 0 8px 20px rgba(14, 42, 43, 0.08);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s ease;
}

.nav-item.has-dropdown:hover .nav-dropdown,
.nav-item.has-dropdown:focus-within .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown li a {
  display: block;
  padding: 9px 18px;
  font-size: 14px;
  color: var(--ink-strong);
}

.nav-dropdown li a:hover {
  color: var(--brand);
  background: var(--bg-head);
}

.header-action {
  flex-shrink: 0;
}

.btn-coop {
  display: inline-flex;
  align-items: center;
  height: 38px;
  padding: 0 18px;
  font-size: 14px;
  color: #FFFFFF;
  background: var(--brand);
  border-radius: var(--radius-m);
}

.btn-coop:hover {
  color: #FFFFFF;
  background: var(--brand-deep);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 46px;
  height: 46px;
  padding: 0 11px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  flex-shrink: 0;
}

.nav-toggle-bar {
  display: block;
  height: 2px;
  background: var(--ink-strong);
  border-radius: 2px;
}

.mobile-nav {
  display: none;
  border-top: 1px solid var(--line);
  background: var(--bg-card);
}

.mobile-nav-list {
  padding: 8px 24px 18px;
}

.mobile-nav-list li a {
  display: flex;
  align-items: center;
  min-height: 48px;
  font-size: 16px;
  color: var(--ink-strong);
  border-bottom: 1px solid var(--line);
}

.mobile-nav-list li a:hover,
.mobile-nav-list li a.is-current {
  color: var(--brand);
}

/* 通用区块标题 */
.section-head {
  margin-bottom: 28px;
}

.section-head h2 {
  font-size: 26px;
  margin-bottom: 10px;
}

.section-desc {
  font-size: 15px;
  color: var(--ink-muted);
  max-width: 74ch;
}

/* 通用按钮 */
.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  font-size: 15px;
  border-radius: var(--radius-m);
  border: 1px solid transparent;
}

.btn-primary {
  color: #FFFFFF;
  background: var(--brand);
}

.btn-primary:hover {
  color: #FFFFFF;
  background: var(--brand-deep);
}

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

.btn-secondary:hover {
  color: var(--brand);
  border-color: var(--brand-soft);
}

/* 表格通用外壳 */
.table-wrap {
  width: 100%;
  overflow-x: auto;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
}

.data-table,
.param-table,
.aside-table,
.version-table {
  width: 100%;
  min-width: 560px;
  font-size: 14px;
}

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

.data-table caption,
.param-table caption,
.aside-table caption,
.version-table caption {
  padding: 14px 18px 4px;
  text-align: left;
  font-size: 13px;
  color: var(--ink-muted);
}

.data-table th,
.data-table td,
.param-table th,
.param-table td,
.aside-table th,
.aside-table td,
.version-table th,
.version-table td {
  padding: 12px 18px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
  line-height: 1.7;
}

.data-table thead th,
.param-table thead th,
.aside-table thead th,
.version-table thead th {
  background: var(--bg-head);
  color: var(--ink-strong);
  font-weight: 600;
  white-space: nowrap;
}

.data-table tbody tr:last-child th,
.data-table tbody tr:last-child td,
.param-table tbody tr:last-child td,
.aside-table tbody tr:last-child td,
.version-table tbody tr:last-child td {
  border-bottom: 0;
}

/* 手风琴 */
.faq-list {
  display: grid;
  gap: 10px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 0 20px;
}

.faq-item summary {
  display: flex;
  align-items: center;
  min-height: 54px;
  padding-right: 26px;
  position: relative;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink-strong);
  cursor: pointer;
  list-style: none;
}

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

.faq-item summary::after {
  content: "";
  position: absolute;
  right: 2px;
  top: 50%;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--brand);
  border-bottom: 2px solid var(--brand);
  transform: translateY(-70%) rotate(45deg);
  transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
  transform: translateY(-30%) rotate(225deg);
}

.faq-item > p {
  padding: 0 0 18px;
  font-size: 15px;
  color: var(--ink-muted);
}

/* 相关任务带 */
.related-tasks {
  margin: 56px 0 0;
  padding: 30px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.related-tasks h2 {
  font-size: 20px;
  margin-bottom: 18px;
}

.related-list,
.related-tasks-list,
.related-task-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

.related-item a,
.related-tasks-list li a,
.related-task-item a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-height: 84px;
  padding: 16px 18px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  color: var(--ink-strong);
}

.related-item a:hover,
.related-tasks-list li a:hover,
.related-task-item a:hover {
  border-color: var(--brand-soft);
}

.related-name,
.related-label,
.related-task-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--brand);
}

.related-desc,
.related-task-desc {
  font-size: 14px;
  color: var(--ink-muted);
  line-height: 1.7;
}

/* 底部相关内容条 */
.related-links {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 20px 24px 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  font-size: 14px;
}

.related-links-label {
  color: var(--ink-muted);
}

.related-links-item {
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-strong);
  background: var(--bg-card);
}

.related-links-item:hover {
  color: var(--brand);
  border-color: var(--brand-soft);
}

/* 页脚 */
.footer-brand-name {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
}

.footer-brand-desc {
  font-size: 14px;
  color: var(--ink-muted);
  max-width: 42ch;
}

.footer-nav-title,
.footer-note-title {
  font-size: 15px;
  margin-bottom: 12px;
}

.footer-nav-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px 16px;
}

.footer-nav-list li a {
  display: block;
  padding: 5px 0;
  font-size: 14px;
  color: var(--ink-muted);
}

.footer-nav-list li a:hover {
  color: var(--brand);
}

.footer-note p {
  font-size: 14px;
  color: var(--ink-muted);
}

/* 图片容器统一约束 */
.hero-figure img,
.matrix-figure img,
.page-title-media img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-l);
}

.hero-figure figcaption,
.matrix-figure figcaption,
.page-title-media figcaption {
  margin-top: 10px;
  font-size: 13px;
  color: var(--ink-muted);
}

/* --------------------------------------------------------------------------
   4. pages —— 首页
   -------------------------------------------------------------------------- */

.home-main {
  display: block;
}

.hero {
  border-bottom: 1px solid var(--line);
  background: var(--bg-card);
}

.hero-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 56px 24px 60px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}

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

.hero-eyebrow {
  font-size: 13px;
  color: var(--brand);
  margin-bottom: 14px;
}

.hero h1 {
  font-size: 40px;
  margin-bottom: 18px;
}

.hero-lead {
  font-size: 17px;
  color: var(--ink-muted);
  max-width: 40ch;
  margin-bottom: 26px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 26px;
}

.hero-points {
  display: grid;
  gap: 8px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.hero-points li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  color: var(--ink-muted);
}

.hero-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand-soft);
}

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

.business-matrix,
.delivery-track,
.industry-scenarios,
.standards-table,
.insights-picks,
.faq {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 62px 24px 0;
}

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

.matrix-item {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 22px 22px 20px;
}

.matrix-item h3 {
  font-size: 19px;
  margin-bottom: 10px;
}

.matrix-item p {
  font-size: 15px;
  color: var(--ink-muted);
}

.matrix-deliverable {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 14px;
  color: var(--brand);
}

.matrix-figure {
  margin-top: 22px;
}

.matrix-figure img {
  aspect-ratio: 16 / 7;
}

.track-list {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.track-node {
  position: relative;
  padding-top: 26px;
}

.track-node::before {
  content: "";
  position: absolute;
  top: 6px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--line);
}

.track-node:first-child::before {
  left: 8px;
}

.track-node:last-child::before {
  right: calc(100% - 8px);
}

.track-dot {
  position: absolute;
  top: 0;
  left: 0;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 0 4px rgba(127, 209, 185, 0.35);
}

.track-node h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.track-node p {
  font-size: 14px;
  color: var(--ink-muted);
}

.track-output {
  margin-top: 10px;
  font-size: 13px;
  color: var(--brand);
}

.track-note {
  margin-top: 22px;
  font-size: 14px;
  color: var(--ink-muted);
}

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

.scenario-item {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--brand-soft);
  border-radius: var(--radius-l);
  padding: 20px 22px;
}

.scenario-item h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.scenario-item p {
  font-size: 15px;
  color: var(--ink-muted);
}

.scenario-prep {
  margin-top: 12px;
  font-size: 14px;
  color: var(--brand);
}

.insight-list {
  display: grid;
  gap: 14px;
}

.insight-item {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 20px 22px;
}

.insight-tag {
  display: inline-block;
  margin-bottom: 8px;
  padding: 2px 10px;
  font-size: 12px;
  color: var(--brand);
  background: var(--bg-tint);
  border-radius: 999px;
}

.insight-item h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.insight-item h3 a {
  color: var(--ink-strong);
}

.insight-item h3 a:hover {
  color: var(--brand);
}

.insight-item > p {
  font-size: 15px;
  color: var(--ink-muted);
}

/* --------------------------------------------------------------------------
   5. pages —— 内页通用
   -------------------------------------------------------------------------- */

.page-title-section,
.page-title-block {
  padding: 8px 0 26px;
}

.page-title-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
  gap: 40px;
  align-items: start;
}

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

.page-title-lead,
.page-lead {
  font-size: 16px;
  color: var(--ink-muted);
  max-width: 46ch;
}

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

.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

.layout-shell {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

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

.layout-aside {
  min-width: 0;
  display: grid;
  gap: 20px;
}

.aside-block {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 20px 20px 22px;
}

.aside-block h2,
.aside-title {
  font-size: 17px;
  margin-bottom: 14px;
}

.aside-link-list {
  display: grid;
  gap: 8px;
}

.aside-link-list li a {
  display: block;
  padding: 10px 12px;
  font-size: 14px;
  color: var(--ink-strong);
  background: var(--bg-soft);
  border-radius: var(--radius-s);
}

.aside-link-list li a:hover {
  color: var(--brand);
  background: var(--bg-tint);
}

.aside-note-list {
  display: grid;
  gap: 10px;
  font-size: 14px;
  color: var(--ink-muted);
}

/* 业务能力页 */
.module-list {
  display: grid;
  gap: 8px;
  margin-bottom: 8px;
}

.module-list-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 150px) minmax(0, 1fr);
  align-items: baseline;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
}

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

.module-name {
  font-size: 15px;
  font-weight: 600;
}

.module-brief {
  font-size: 14px;
  color: var(--ink-muted);
}

.module-block {
  margin-top: 26px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.module-block:first-of-type {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.module-block h3 {
  font-size: 19px;
  margin-bottom: 10px;
}

.module-capability {
  font-size: 15px;
  color: var(--ink-muted);
  max-width: 62ch;
}

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

.module-col {
  min-width: 0;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 16px 18px;
  font-size: 14px;
  color: var(--ink-muted);
}

.module-col ul {
  display: grid;
  gap: 6px;
}

.module-col li {
  position: relative;
  padding-left: 16px;
}

.module-col li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-soft);
}

.scenario-list {
  display: grid;
  gap: 14px;
}

.scenario-list .scenario-item {
  border-left: 3px solid var(--brand-soft);
}

.boundary-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.boundary-item {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 18px 20px;
}

.boundary-item h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.boundary-item p {
  font-size: 14px;
  color: var(--ink-muted);
}

/* 行业方案页 */
.section-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}

.industry-index-section,
.industry-blocks-section,
.combination-section,
.linkage-section {
  padding-top: 44px;
}

.industry-index-section .section-title,
.industry-blocks-section .section-title,
.combination-section .section-title,
.linkage-section .section-title {
  font-size: 26px;
  margin-bottom: 10px;
}

.industry-index-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.industry-index-item a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 20px;
  font-size: 15px;
  color: var(--ink-strong);
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.industry-index-item a:hover {
  color: var(--brand);
  border-color: var(--brand-soft);
}

.industry-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.industry-block {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 24px;
  scroll-margin-top: 90px;
}

.industry-block-title {
  font-size: 19px;
  margin-bottom: 10px;
}

.industry-block-intro {
  font-size: 15px;
  color: var(--ink-muted);
  margin-bottom: 18px;
}

.industry-block-cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.industry-col {
  min-width: 0;
  padding: 14px 14px 16px;
  background: var(--bg-soft);
  border-radius: var(--radius-m);
  font-size: 14px;
  color: var(--ink-muted);
}

.industry-col ul {
  display: grid;
  gap: 6px;
}

.industry-col li {
  position: relative;
  padding-left: 14px;
}

.industry-col li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--brand);
}

.industry-col-demand {
  border-top: 2px solid var(--brand);
}

.industry-col-config {
  border-top: 2px solid var(--brand-soft);
}

.industry-col-material {
  border-top: 2px solid var(--line);
}

.combination-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 22px;
}

.combination-item {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 20px;
}

.combination-item h3 {
  font-size: 17px;
  margin-bottom: 10px;
}

.combination-cond {
  font-size: 14px;
  color: var(--brand);
  margin-bottom: 8px;
}

.combination-advice {
  font-size: 14px;
  color: var(--ink-muted);
}

.linkage-list {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}

.linkage-item p {
  font-size: 15px;
  color: var(--ink-muted);
  padding: 14px 18px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--brand-soft);
  border-radius: var(--radius-m);
}

.related-tasks-section {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 56px 24px 0;
}

.related-tasks-section .section-title {
  font-size: 20px;
  margin-bottom: 18px;
}

.related-tasks-section .related-tasks-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

.related-tasks-section .related-tasks-list li a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-height: 84px;
  padding: 16px 18px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  color: var(--ink-strong);
}

.related-tasks-section .related-tasks-list li a:hover {
  border-color: var(--brand-soft);
}

/* 交付体系页 */
.delivery-track-section,
.node-table-section,
.division-section,
.version-rules-section {
  padding-top: 48px;
}

.delivery-track-section .track-list {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.delivery-track-section .track-node {
  position: relative;
  padding-top: 24px;
}

.delivery-track-section .track-node::before {
  content: "";
  position: absolute;
  top: 6px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--line);
}

.delivery-track-section .track-node:first-child::before {
  left: 8px;
}

.delivery-track-section .track-node:last-child::before {
  right: calc(100% - 8px);
}

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

.track-card h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

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

.track-cycle {
  margin-bottom: 6px;
  font-size: 13px;
  color: var(--brand);
}

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

.division-col {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 20px;
}

.division-col h3 {
  font-size: 17px;
  margin-bottom: 12px;
}

.division-list {
  display: grid;
  gap: 8px;
}

.division-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  color: var(--ink-muted);
}

.division-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-soft);
}

.rules-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.rule-item {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--warn);
  border-radius: var(--radius-l);
  padding: 18px 20px;
}

.rule-item h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.rule-item p {
  font-size: 14px;
  color: var(--ink-muted);
}

.related-tasks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

.task-entry {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-height: 84px;
  padding: 16px 18px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  color: var(--ink-strong);
}

.task-entry:hover {
  border-color: var(--brand-soft);
}

.task-label {
  font-size: 16px;
  font-weight: 600;
  color: var(--brand);
}

.task-desc {
  font-size: 14px;
  color: var(--ink-muted);
}

/* 洞察页 */
.insights-groups,
.method-standards,
.version-notes,
.usage-note {
  padding-top: 40px;
}

.insights-groups h2,
.method-standards h2,
.version-notes h2,
.usage-note h2 {
  font-size: 24px;
  margin-bottom: 8px;
}

.section-lead {
  font-size: 15px;
  color: var(--ink-muted);
  margin-bottom: 20px;
  max-width: 72ch;
}

.insight-group {
  margin-top: 26px;
}

.insight-group:first-of-type {
  margin-top: 0;
}

.insight-group h3 {
  font-size: 18px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.insight-group .insight-list {
  display: grid;
  gap: 12px;
}

.insight-group .insight-item {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 18px 20px;
}

.insight-title {
  font-size: 17px;
  margin-bottom: 6px;
}

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

.insight-title a:hover {
  color: var(--brand);
}

.insight-summary {
  font-size: 14px;
  color: var(--ink-muted);
}

.insight-version {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--warn);
}

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

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

.method-item h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.method-item p {
  font-size: 15px;
  color: var(--ink-muted);
  max-width: 68ch;
}

.version-table {
  margin-top: 16px;
}

.usage-note p {
  font-size: 15px;
  color: var(--ink-muted);
  max-width: 68ch;
  margin-bottom: 12px;
}

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

.tag-item {
  padding: 5px 12px;
  font-size: 13px;
  color: var(--brand);
  background: var(--bg-tint);
  border-radius: 999px;
}

/* 关于我们页 */
.content-section {
  padding-top: 48px;
}

.content-section .section-head h2 {
  font-size: 24px;
}

.team-table tbody th {
  width: 26%;
  font-weight: 600;
  color: var(--ink-strong);
  background: #FAFCFB;
}

.principle-list {
  display: grid;
  gap: 14px;
}

.principle-item {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 18px 20px;
}

.principle-item h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.principle-item p {
  font-size: 14px;
  color: var(--ink-muted);
}

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

.quality-item {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-top: 3px solid var(--brand-soft);
  border-radius: var(--radius-l);
  padding: 20px;
}

.quality-item h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.quality-item p {
  font-size: 14px;
  color: var(--ink-muted);
}

.notice-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.notice-item {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--warn);
  border-radius: var(--radius-l);
  padding: 18px 20px;
}

.notice-item h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.notice-item p {
  font-size: 14px;
  color: var(--ink-muted);
}

/* 联系我们页 */
.preparation-section,
.flow-section,
.faq-section,
.info-note-section {
  padding-top: 48px;
}

.preparation-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.preparation-item {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 18px 20px;
}

.preparation-item h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.preparation-item p {
  font-size: 14px;
  color: var(--ink-muted);
}

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

.flow-step {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 20px;
}

.flow-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: #FFFFFF;
  background: var(--brand);
  border-radius: 50%;
}

.flow-body h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.flow-body p {
  font-size: 14px;
  color: var(--ink-muted);
}

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

.info-note-item {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 20px;
}

.info-note-item h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.info-note-item p {
  font-size: 14px;
  color: var(--ink-muted);
  margin-bottom: 12px;
}

.info-note-link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  font-size: 14px;
  font-weight: 600;
}

.related-tasks-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}

.related-tasks-inner .related-tasks-title {
  font-size: 20px;
  margin-bottom: 18px;
}

/* 404 页 */
.error-main {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 72px 24px 40px;
}

.error-panel {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  padding: 44px 40px;
}

.error-code {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--brand);
  margin-bottom: 12px;
}

.error-panel h1 {
  font-size: 40px;
  margin-bottom: 14px;
}

.error-text {
  font-size: 16px;
  color: var(--ink-muted);
  max-width: 56ch;
  margin-bottom: 24px;
}

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

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  font-size: 15px;
  color: var(--ink-strong);
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
}

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

.error-links {
  margin-top: 40px;
}

.error-links h2 {
  font-size: 22px;
  margin-bottom: 16px;
}

.error-link-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.error-link-list li a {
  display: flex;
  align-items: center;
  min-height: 52px;
  padding: 0 18px;
  font-size: 15px;
  color: var(--ink-strong);
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
}

.error-link-list li a:hover {
  color: var(--brand);
  border-color: var(--brand-soft);
}

/* --------------------------------------------------------------------------
   6. responsive
   -------------------------------------------------------------------------- */

@media (max-width: 1024px) {
  .page-title {
    font-size: 32px;
  }

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

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
    padding: 44px 24px 48px;
  }

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

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

  .track-list,
  .delivery-track-section .track-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .industry-col-material {
    grid-column: 1 / -1;
  }

  .combination-list,
  .division-grid,
  .info-note-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

  .footer-note {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-list {
    display: none;
  }

  .nav-list.is-open {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    padding: 8px 16px 16px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 10px 22px rgba(14, 42, 43, 0.08);
  }

  .nav-list.is-open .nav-item > a {
    height: auto;
    min-height: 48px;
    padding: 0 4px;
    border-bottom: 1px solid var(--line);
  }

  .nav-list.is-open .nav-item.has-dropdown > a::after {
    display: none;
  }

  .nav-list.is-open .nav-dropdown {
    position: static;
    min-width: 0;
    padding: 0 0 6px 14px;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .site-nav {
    position: relative;
  }

  .mobile-nav.is-open {
    display: block;
  }

  .header-inner {
    gap: 16px;
    justify-content: space-between;
  }

  .brand-tagline {
    display: none;
  }

  .header-action {
    display: none;
  }

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

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

  .matrix-grid,
  .scenario-grid,
  .boundary-list,
  .module-columns,
  .quality-grid,
  .notice-list,
  .preparation-list,
  .rules-list {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .track-node::before,
  .delivery-track-section .track-node::before {
    display: none;
  }

  .track-node,
  .delivery-track-section .track-node {
    padding-top: 20px;
  }

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

  .combination-list,
  .division-grid,
  .info-note-list,
  .flow-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .module-list-item {
    grid-template-columns: 32px minmax(0, 1fr);
    row-gap: 4px;
  }

  .module-brief {
    grid-column: 2 / -1;
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
    padding: 36px 24px 24px;
  }

  .section-head h2,
  .industry-index-section .section-title,
  .industry-blocks-section .section-title,
  .combination-section .section-title,
  .linkage-section .section-title {
    font-size: 22px;
  }
}

@media (max-width: 480px) {
  .header-inner {
    padding: 0 16px;
    min-height: 62px;
  }

  .inner-main,
  .hero-inner,
  .business-matrix,
  .delivery-track,
  .industry-scenarios,
  .standards-table,
  .insights-picks,
  .faq,
  .section-inner,
  .related-tasks-section,
  .related-tasks-inner,
  .related-links,
  .footer-inner,
  .footer-bottom p,
  .error-main {
    padding-left: 16px;
    padding-right: 16px;
  }

  .page-title,
  .hero h1,
  .error-panel h1 {
    font-size: 26px;
  }

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

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

  .hero-actions .btn-primary,
  .hero-actions .btn-secondary,
  .error-actions .btn-primary,
  .error-actions .btn-ghost {
    width: 100%;
  }

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

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

  .industry-col-material {
    grid-column: auto;
  }

  .error-panel {
    padding: 30px 20px;
  }

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