/* ==========================================================================
   Base
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: #1E1D1B;
  background-color: #F4F2EE;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: #1E1D1B;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #A63C2C;
}

ul,
ol {
  list-style: none;
}

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

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

details summary {
  cursor: pointer;
}

/* 暗色主题 */
body.site-body[data-theme="dark"] {
  color: #E8E4DE;
  background-color: #161513;
}

body.site-body[data-theme="dark"] a {
  color: #E8E4DE;
}

body.site-body[data-theme="dark"] a:hover {
  color: #C96A58;
}

/* ==========================================================================
   Layout
   ========================================================================== */

.site-header {
  background-color: #F4F2EE;
  border-bottom: 1px solid #DCD6CB;
  position: sticky;
  top: 0;
  z-index: 100;
}

body.site-body[data-theme="dark"] .site-header {
  background-color: #161513;
  border-bottom-color: #2A2825;
}

.header-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 32px;
  height: 64px;
}

.brand-block {
  flex-shrink: 0;
}

.brand-link {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.brand-name {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #1E1D1B;
}

body.site-body[data-theme="dark"] .brand-name {
  color: #E8E4DE;
}

.brand-code {
  font-family: 'SF Mono', 'JetBrains Mono', Consolas, monospace;
  font-size: 11px;
  color: #7C756E;
  letter-spacing: 0.04em;
}

.main-nav.site-nav {
  flex: 1;
}

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

.nav-item {
  display: block;
  padding: 8px 14px;
  font-size: 14px;
  color: #4A4640;
  border-radius: 4px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-item:hover {
  color: #1E1D1B;
  background-color: #E8E4DE;
}

.nav-item.is-current {
  color: #A63C2C;
  font-weight: 600;
  background-color: #F0ECE4;
}

body.site-body[data-theme="dark"] .nav-item {
  color: #B0ABA3;
}

body.site-body[data-theme="dark"] .nav-item:hover {
  color: #E8E4DE;
  background-color: #272522;
}

body.site-body[data-theme="dark"] .nav-item.is-current {
  color: #C96A58;
  background-color: #272522;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.tool-link {
  font-size: 13px;
  color: #7C756E;
  padding: 8px 12px;
  border: 1px solid #DCD6CB;
  border-radius: 4px;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.tool-link:hover {
  border-color: #A63C2C;
  color: #A63C2C;
}

.theme-toggle {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #DCD6CB;
  border-radius: 4px;
  transition: border-color 0.2s ease;
}

.theme-toggle:hover {
  border-color: #A63C2C;
}

.toggle-icon {
  font-size: 14px;
  line-height: 1;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  gap: 5px;
  flex-shrink: 0;
}

.nav-toggle-line {
  display: block;
  width: 20px;
  height: 2px;
  background-color: #1E1D1B;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

body.site-body[data-theme="dark"] .nav-toggle-line {
  background-color: #E8E4DE;
}

.nav-toggle.is-active .nav-toggle-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-active .nav-toggle-line:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-active .nav-toggle-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-main {
  min-height: 60vh;
}

.site-footer {
  background-color: #F4F2EE;
  border-top: 1px solid #DCD6CB;
  margin-top: 80px;
}

body.site-body[data-theme="dark"] .site-footer {
  background-color: #161513;
  border-top-color: #2A2825;
}

.footer-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 48px 24px 24px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
}

.footer-brand-name {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.footer-desc {
  font-size: 13px;
  color: #7C756E;
  line-height: 1.6;
  max-width: 360px;
}

.footer-col-title {
  font-size: 13px;
  font-weight: 600;
  color: #1E1D1B;
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

body.site-body[data-theme="dark"] .footer-col-title {
  color: #E8E4DE;
}

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

.footer-links a {
  font-size: 14px;
  color: #7C756E;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: #A63C2C;
}

.footer-tool-text {
  font-size: 13px;
  color: #7C756E;
  margin-bottom: 12px;
  line-height: 1.6;
}

.footer-feedback-link {
  font-size: 13px;
  color: #A63C2C;
  border-bottom: 1px solid #A63C2C;
  padding-bottom: 2px;
}

.footer-bottom {
  border-top: 1px solid #DCD6CB;
  padding: 16px 24px;
  text-align: center;
}

body.site-body[data-theme="dark"] .footer-bottom {
  border-top-color: #2A2825;
}

.footer-bottom p {
  font-size: 12px;
  color: #7C756E;
}

/* ==========================================================================
   Components
   ========================================================================== */

/* 面包屑 */
.breadcrumb-wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 16px 24px 0;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: #7C756E;
}

.breadcrumb a {
  color: #7C756E;
  transition: color 0.2s ease;
}

.breadcrumb a:hover {
  color: #A63C2C;
}

.breadcrumb-sep {
  color: #B0ABA3;
}

.breadcrumb-current {
  color: #4A4640;
}

body.site-body[data-theme="dark"] .breadcrumb-current {
  color: #B0ABA3;
}

/* 页面标题区 */
.page-title-block {
  max-width: 1120px;
  margin: 0 auto;
  padding: 32px 24px 8px;
}

.page-title-desc {
  font-size: 15px;
  color: #7C756E;
  max-width: 720px;
  margin-top: 8px;
}

.page-header {
  max-width: 1120px;
  margin: 0 auto;
  padding: 24px 24px 8px;
}

.page-title {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #1E1D1B;
  line-height: 1.3;
}

body.site-body[data-theme="dark"] .page-title {
  color: #E8E4DE;
}

.page-intro {
  font-size: 15px;
  color: #7C756E;
  max-width: 720px;
  margin-top: 8px;
}

/* 内页布局 */
.page-layout {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 48px;
  align-items: start;
}

.layout-shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 48px;
  align-items: start;
}

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

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

/* 侧栏 */
.sidebar {
  min-width: 0;
}

.sidebar-area {
  min-width: 0;
}

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

.sidebar-block {
  background-color: #FFFFFF;
  border: 1px solid #DCD6CB;
  border-radius: 6px;
  padding: 24px;
  margin-bottom: 24px;
}

body.site-body[data-theme="dark"] .sidebar-block {
  background-color: #1E1C19;
  border-color: #2A2825;
}

.sidebar-title {
  font-size: 14px;
  font-weight: 600;
  color: #1E1D1B;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid #DCD6CB;
}

body.site-body[data-theme="dark"] .sidebar-title {
  color: #E8E4DE;
  border-bottom-color: #2A2825;
}

.sidebar-links li {
  margin-bottom: 10px;
}

.sidebar-links a {
  font-size: 14px;
  color: #4A4640;
  display: block;
  padding: 4px 0;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.sidebar-links a:hover {
  color: #A63C2C;
  padding-left: 4px;
}

body.site-body[data-theme="dark"] .sidebar-links a {
  color: #B0ABA3;
}

.sidebar-text {
  font-size: 13px;
  color: #7C756E;
  line-height: 1.6;
  margin-top: 12px;
}

/* 侧栏（交付标准） */
.aside-block {
  background-color: #FFFFFF;
  border: 1px solid #DCD6CB;
  border-radius: 6px;
  padding: 24px;
  margin-bottom: 24px;
}

body.site-body[data-theme="dark"] .aside-block {
  background-color: #1E1C19;
  border-color: #2A2825;
}

.aside-title {
  font-size: 14px;
  font-weight: 600;
  color: #1E1D1B;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid #DCD6CB;
}

body.site-body[data-theme="dark"] .aside-title {
  color: #E8E4DE;
  border-bottom-color: #2A2825;
}

.aside-link-list li {
  margin-bottom: 10px;
}

.aside-link-list a {
  font-size: 14px;
  color: #4A4640;
  display: block;
  padding: 4px 0;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.aside-link-list a:hover {
  color: #A63C2C;
  padding-left: 4px;
}

body.site-body[data-theme="dark"] .aside-link-list a {
  color: #B0ABA3;
}

.aside-text {
  font-size: 13px;
  color: #7C756E;
  line-height: 1.6;
  margin-top: 12px;
}

/* 侧栏（合作入口） */
.sidebar-inner {
  position: sticky;
  top: 80px;
}

.aside-nav-section {
  background-color: #FFFFFF;
  border: 1px solid #DCD6CB;
  border-radius: 6px;
  padding: 24px;
  margin-bottom: 24px;
}

body.site-body[data-theme="dark"] .aside-nav-section {
  background-color: #1E1C19;
  border-color: #2A2825;
}

.aside-nav-section h2 {
  font-size: 14px;
  font-weight: 600;
  color: #1E1D1B;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid #DCD6CB;
}

body.site-body[data-theme="dark"] .aside-nav-section h2 {
  color: #E8E4DE;
  border-bottom-color: #2A2825;
}

.aside-nav-list li {
  margin-bottom: 10px;
}

.aside-nav-list a {
  font-size: 14px;
  color: #4A4640;
  display: block;
  padding: 4px 0;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.aside-nav-list a:hover {
  color: #A63C2C;
  padding-left: 4px;
}

body.site-body[data-theme="dark"] .aside-nav-list a {
  color: #B0ABA3;
}

.aside-note {
  background-color: #FFFFFF;
  border: 1px solid #DCD6CB;
  border-radius: 6px;
  padding: 24px;
}

body.site-body[data-theme="dark"] .aside-note {
  background-color: #1E1C19;
  border-color: #2A2825;
}

.aside-note h2 {
  font-size: 14px;
  font-weight: 600;
  color: #1E1D1B;
  margin-bottom: 12px;
}

body.site-body[data-theme="dark"] .aside-note h2 {
  color: #E8E4DE;
}

.aside-note p {
  font-size: 13px;
  color: #7C756E;
  line-height: 1.6;
}

/* 按钮 */
.btn-primary {
  display: inline-block;
  padding: 12px 28px;
  background-color: #1E1D1B;
  color: #F4F2EE;
  font-size: 14px;
  font-weight: 600;
  border-radius: 4px;
  transition: background-color 0.2s ease;
}

.btn-primary:hover {
  background-color: #A63C2C;
  color: #FFFFFF;
}

body.site-body[data-theme="dark"] .btn-primary {
  background-color: #E8E4DE;
  color: #161513;
}

body.site-body[data-theme="dark"] .btn-primary:hover {
  background-color: #C96A58;
  color: #FFFFFF;
}

.btn-secondary {
  display: inline-block;
  padding: 12px 28px;
  background-color: transparent;
  color: #1E1D1B;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid #DCD6CB;
  border-radius: 4px;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.btn-secondary:hover {
  border-color: #A63C2C;
  color: #A63C2C;
}

body.site-body[data-theme="dark"] .btn-secondary {
  color: #E8E4DE;
  border-color: #3A3733;
}

body.site-body[data-theme="dark"] .btn-secondary:hover {
  border-color: #C96A58;
  color: #C96A58;
}

/* 区块标题 */
.section-heading {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 32px;
}

.section-code {
  font-family: 'SF Mono', 'JetBrains Mono', Consolas, monospace;
  font-size: 12px;
  color: #A63C2C;
  letter-spacing: 0.06em;
  flex-shrink: 0;
}

.section-title {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #1E1D1B;
  line-height: 1.3;
}

body.site-body[data-theme="dark"] .section-title {
  color: #E8E4DE;
}

/* 内容区块 */
.content-section {
  margin-bottom: 56px;
}

.content-section h2 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #1E1D1B;
  margin-bottom: 16px;
  line-height: 1.3;
}

body.site-body[data-theme="dark"] .content-section h2 {
  color: #E8E4DE;
}

.content-section > p {
  font-size: 15px;
  color: #4A4640;
  line-height: 1.7;
  margin-bottom: 16px;
  max-width: 680px;
}

body.site-body[data-theme="dark"] .content-section > p {
  color: #B0ABA3;
}

/* 文本链接 */
.text-link {
  display: inline-block;
  font-size: 14px;
  color: #A63C2C;
  font-weight: 500;
  border-bottom: 1px solid #A63C2C;
  padding-bottom: 2px;
  transition: color 0.2s ease;
}

.text-link:hover {
  color: #1E1D1B;
  border-bottom-color: #1E1D1B;
}

/* 表格 */
.table-wrap {
  overflow-x: auto;
  margin-bottom: 16px;
}

.cycle-table {
  width: 100%;
  font-size: 14px;
  border: 1px solid #DCD6CB;
}

.cycle-table thead th {
  background-color: #E8E4DE;
  color: #1E1D1B;
  font-weight: 600;
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid #DCD6CB;
  font-size: 13px;
}

body.site-body[data-theme="dark"] .cycle-table thead th {
  background-color: #272522;
  color: #E8E4DE;
  border-bottom-color: #3A3733;
}

.cycle-table tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid #DCD6CB;
  color: #4A4640;
  line-height: 1.6;
}

body.site-body[data-theme="dark"] .cycle-table tbody td {
  border-bottom-color: #2A2825;
  color: #B0ABA3;
}

.cycle-table tbody tr:last-child td {
  border-bottom: none;
}

/* 折叠面板 */
.boundary-details {
  margin-bottom: 12px;
  border: 1px solid #DCD6CB;
  border-radius: 6px;
  background-color: #FFFFFF;
}

body.site-body[data-theme="dark"] .boundary-details {
  background-color: #1E1C19;
  border-color: #2A2825;
}

.boundary-details summary {
  padding: 14px 20px;
  font-size: 15px;
  font-weight: 600;
  color: #1E1D1B;
  cursor: pointer;
  list-style: none;
  position: relative;
}

body.site-body[data-theme="dark"] .boundary-details summary {
  color: #E8E4DE;
}

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

.boundary-details summary::after {
  content: '+';
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 18px;
  color: #7C756E;
}

.boundary-details[open] summary::after {
  content: '−';
}

.boundary-details .boundary-list {
  padding: 0 20px 16px;
}

.boundary-details .boundary-list li {
  font-size: 14px;
  color: #4A4640;
  line-height: 1.7;
  padding: 6px 0;
  border-top: 1px solid #F0ECE4;
}

body.site-body[data-theme="dark"] .boundary-details .boundary-list li {
  color: #B0ABA3;
  border-top-color: #2A2825;
}

/* 相关链接 */
.related-links {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  border-top: 1px solid #DCD6CB;
  border-bottom: 1px solid #DCD6CB;
  margin-top: 48px;
  flex-wrap: wrap;
}

.related-links-label {
  font-size: 13px;
  color: #7C756E;
  font-weight: 500;
}

.related-links-item {
  font-size: 14px;
  color: #A63C2C;
  border: 1px solid #DCD6CB;
  padding: 6px 14px;
  border-radius: 4px;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.related-links-item:hover {
  border-color: #A63C2C;
}

/* ==========================================================================
   首页
   ========================================================================== */

/* Hero */
.hero-section {
  border-bottom: 1px solid #DCD6CB;
  background-color: #F4F2EE;
}

body.site-body[data-theme="dark"] .hero-section {
  background-color: #161513;
  border-bottom-color: #2A2825;
}

.hero-container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 64px 24px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-eyebrow {
  font-family: 'SF Mono', 'JetBrains Mono', Consolas, monospace;
  font-size: 12px;
  color: #A63C2C;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.hero-title {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.25;
  color: #1E1D1B;
  margin-bottom: 16px;
}

body.site-body[data-theme="dark"] .hero-title {
  color: #E8E4DE;
}

.hero-subtitle {
  font-size: 16px;
  color: #4A4640;
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 520px;
}

body.site-body[data-theme="dark"] .hero-subtitle {
  color: #B0ABA3;
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-figure {
  border: 1px solid #DCD6CB;
  border-radius: 6px;
  overflow: hidden;
  background-color: #E8E4DE;
}

body.site-body[data-theme="dark"] .hero-figure {
  border-color: #2A2825;
  background-color: #1E1C19;
}

.hero-image {
  width: 100%;
  height: 360px;
  object-fit: cover;
  display: block;
}

/* 服务索引 */
.service-index {
  max-width: 1120px;
  margin: 0 auto;
  padding: 64px 24px 0;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.service-card {
  background-color: #FFFFFF;
  border: 1px solid #DCD6CB;
  border-radius: 6px;
  overflow: hidden;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

body.site-body[data-theme="dark"] .service-card {
  background-color: #1E1C19;
  border-color: #2A2825;
}

.service-card:hover {
  border-color: #A63C2C;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.service-figure {
  border-bottom: 1px solid #DCD6CB;
  overflow: hidden;
}

body.site-body[data-theme="dark"] .service-figure {
  border-bottom-color: #2A2825;
}

.service-figure img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.service-card-body {
  padding: 20px 24px 24px;
}

.service-number {
  font-family: 'SF Mono', 'JetBrains Mono', Consolas, monospace;
  font-size: 12px;
  color: #A63C2C;
  display: block;
  margin-bottom: 8px;
}

.service-name {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #1E1D1B;
  margin-bottom: 8px;
}

body.site-body[data-theme="dark"] .service-name {
  color: #E8E4DE;
}

.service-desc {
  font-size: 14px;
  color: #7C756E;
  line-height: 1.6;
}

/* 最新观察 */
.latest-observations {
  max-width: 1120px;
  margin: 0 auto;
  padding: 64px 24px 0;
}

.observation-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.observation-item {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 24px;
  background-color: #FFFFFF;
  border: 1px solid #DCD6CB;
  border-radius: 6px;
  padding: 16px;
  transition: border-color 0.2s ease;
}

body.site-body[data-theme="dark"] .observation-item {
  background-color: #1E1C19;
  border-color: #2A2825;
}

.observation-item:hover {
  border-color: #A63C2C;
}

.observation-figure {
  overflow: hidden;
  border-radius: 4px;
}

.observation-figure img {
  width: 100%;
  height: 120px;
  object-fit: cover;
}

.observation-meta {
  display: flex;
  gap: 16px;
  margin-bottom: 8px;
  font-family: 'SF Mono', 'JetBrains Mono', Consolas, monospace;
  font-size: 12px;
  color: #7C756E;
}

.obs-category {
  color: #A63C2C;
}

.observation-title {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #1E1D1B;
  margin-bottom: 8px;
}

body.site-body[data-theme="dark"] .observation-title {
  color: #E8E4DE;
}

.observation-excerpt {
  font-size: 14px;
  color: #7C756E;
  line-height: 1.6;
  margin-bottom: 12px;
}

.read-more {
  font-size: 13px;
  color: #A63C2C;
  font-weight: 500;
}

/* 交付节奏与区域覆盖 */
.interval-cover {
  max-width: 1120px;
  margin: 0 auto;
  padding: 64px 24px 0;
}

.interval-block {
  background-color: #FFFFFF;
  border: 1px solid #DCD6CB;
  border-radius: 6px;
  padding: 40px;
}

body.site-body[data-theme="dark"] .interval-block {
  background-color: #1E1C19;
  border-color: #2A2825;
}

.interval-cover-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-top: 24px;
}

.block-subtitle {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #1E1D1B;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid #DCD6CB;
}

body.site-body[data-theme="dark"] .block-subtitle {
  color: #E8E4DE;
  border-bottom-color: #2A2825;
}

.interval-items {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.interval-items li {
  font-size: 14px;
  color: #4A4640;
  padding: 12px 16px;
  background-color: #F4F2EE;
  border-radius: 4px;
  line-height: 1.6;
}

body.site-body[data-theme="dark"] .interval-items li {
  background-color: #272522;
  color: #B0ABA3;
}

.coverage-desc {
  font-size: 14px;
  color: #4A4640;
  line-height: 1.7;
  margin-bottom: 16px;
}

body.site-body[data-theme="dark"] .coverage-desc {
  color: #B0ABA3;
}

/* 合作 CTA */
.cooperation-cta {
  max-width: 1120px;
  margin: 0 auto;
  padding: 64px 24px 0;
}

.coop-inner {
  background-color: #1E1D1B;
  border-radius: 6px;
  padding: 48px;
  text-align: center;
}

body.site-body[data-theme="dark"] .coop-inner {
  background-color: #E8E4DE;
}

.coop-inner .section-title {
  color: #F4F2EE;
  margin-bottom: 12px;
}

body.site-body[data-theme="dark"] .coop-inner .section-title {
  color: #161513;
}

.coop-desc {
  font-size: 15px;
  color: #B0ABA3;
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

body.site-body[data-theme="dark"] .coop-desc {
  color: #6B655C;
}

.coop-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 32px;
  text-align: left;
}

.coop-step {
  padding: 20px;
  background-color: #2A2825;
  border-radius: 6px;
  border: 1px solid #3A3733;
}

body.site-body[data-theme="dark"] .coop-step {
  background-color: #F4F2EE;
  border-color: #DCD6CB;
}

.coop-step .step-number {
  font-family: 'SF Mono', 'JetBrains Mono', Consolas, monospace;
  font-size: 12px;
  color: #C96A58;
  display: block;
  margin-bottom: 8px;
}

body.site-body[data-theme="dark"] .coop-step .step-number {
  color: #A63C2C;
}

.coop-step .step-name {
  font-size: 15px;
  font-weight: 600;
  color: #F4F2EE;
  display: block;
  margin-bottom: 6px;
}

body.site-body[data-theme="dark"] .coop-step .step-name {
  color: #1E1D1B;
}

.coop-step .step-desc {
  font-size: 13px;
  color: #B0ABA3;
  line-height: 1.6;
}

body.site-body[data-theme="dark"] .coop-step .step-desc {
  color: #6B655C;
}

.coop-inner .btn-primary {
  background-color: #F4F2EE;
  color: #1E1D1B;
}

.coop-inner .btn-primary:hover {
  background-color: #C96A58;
  color: #FFFFFF;
}

body.site-body[data-theme="dark"] .coop-inner .btn-primary {
  background-color: #1E1D1B;
  color: #F4F2EE;
}

body.site-body[data-theme="dark"] .coop-inner .btn-primary:hover {
  background-color: #A63C2C;
  color: #FFFFFF;
}

/* 服务边界 */
.service-boundary {
  max-width: 1120px;
  margin: 0 auto;
  padding: 64px 24px 0;
}

.boundary-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 48px;
  align-items: start;
}

.boundary-intro {
  font-size: 15px;
  color: #4A4640;
  line-height: 1.7;
  margin-bottom: 20px;
  max-width: 680px;
}

body.site-body[data-theme="dark"] .boundary-intro {
  color: #B0ABA3;
}

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

.boundary-list li {
  font-size: 14px;
  color: #4A4640;
  padding: 12px 16px;
  background-color: #FFFFFF;
  border: 1px solid #DCD6CB;
  border-radius: 4px;
  line-height: 1.6;
}

body.site-body[data-theme="dark"] .boundary-list li {
  background-color: #1E1C19;
  border-color: #2A2825;
  color: #B0ABA3;
}

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

.boundary-note {
  background-color: #A63C2C;
  border-radius: 6px;
  padding: 24px;
  color: #FFFFFF;
}

.note-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 12px;
}

.boundary-note p {
  font-size: 13px;
  line-height: 1.7;
  color: #F0D9D5;
}

/* ==========================================================================
   内页
   ========================================================================== */

/* 区域场景 */
.cover-principles {
  margin-bottom: 56px;
}

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

.principle-card {
  background-color: #FFFFFF;
  border: 1px solid #DCD6CB;
  border-radius: 6px;
  padding: 24px;
  transition: border-color 0.2s ease;
}

body.site-body[data-theme="dark"] .principle-card {
  background-color: #1E1C19;
  border-color: #2A2825;
}

.principle-card:hover {
  border-color: #A63C2C;
}

.principle-index {
  font-family: 'SF Mono', 'JetBrains Mono', Consolas, monospace;
  font-size: 12px;
  color: #A63C2C;
  display: block;
  margin-bottom: 12px;
}

.principle-card h3 {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #1E1D1B;
  margin-bottom: 8px;
}

body.site-body[data-theme="dark"] .principle-card h3 {
  color: #E8E4DE;
}

.principle-card p {
  font-size: 14px;
  color: #7C756E;
  line-height: 1.6;
}

/* 远程交付 */
.remote-delivery {
  margin-bottom: 56px;
}

.delivery-scenario-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.scenario-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 16px;
  background-color: #FFFFFF;
  border: 1px solid #DCD6CB;
  border-radius: 6px;
  padding: 20px 24px;
}

body.site-body[data-theme="dark"] .scenario-item {
  background-color: #1E1C19;
  border-color: #2A2825;
}

.scenario-code {
  font-family: 'SF Mono', 'JetBrains Mono', Consolas, monospace;
  font-size: 12px;
  color: #A63C2C;
  padding-top: 4px;
}

.scenario-body h3 {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #1E1D1B;
  margin-bottom: 6px;
}

body.site-body[data-theme="dark"] .scenario-body h3 {
  color: #E8E4DE;
}

.scenario-body p {
  font-size: 14px;
  color: #7C756E;
  line-height: 1.6;
}

.content-figure {
  border: 1px solid #DCD6CB;
  border-radius: 6px;
  overflow: hidden;
  margin-top: 24px;
}

body.site-body[data-theme="dark"] .content-figure {
  border-color: #2A2825;
}

.content-figure img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.content-figure figcaption {
  padding: 12px 16px;
  font-size: 13px;
  color: #7C756E;
  background-color: #F4F2EE;
  border-top: 1px solid #DCD6CB;
}

body.site-body[data-theme="dark"] .content-figure figcaption {
  background-color: #1E1C19;
  border-top-color: #2A2825;
}

/* 前置沟通与现场支持 */
.onsite-briefing {
  margin-bottom: 56px;
}

.briefing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.briefing-block {
  background-color: #FFFFFF;
  border: 1px solid #DCD6CB;
  border-radius: 6px;
  padding: 24px;
}

body.site-body[data-theme="dark"] .briefing-block {
  background-color: #1E1C19;
  border-color: #2A2825;
}

.briefing-block h3 {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #1E1D1B;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid #DCD6CB;
}

body.site-body[data-theme="dark"] .briefing-block h3 {
  color: #E8E4DE;
  border-bottom-color: #2A2825;
}

.briefing-list li {
  font-size: 14px;
  color: #4A4640;
  padding: 8px 0;
  border-bottom: 1px solid #F4F2EE;
  line-height: 1.6;
}

body.site-body[data-theme="dark"] .briefing-list li {
  color: #B0ABA3;
  border-bottom-color: #272522;
}

.briefing-list li:last-child {
  border-bottom: none;
}

/* 覆盖边界提醒 */
.coverage-boundary-note {
  background-color: #A63C2C;
  border-radius: 6px;
  padding: 20px 24px;
  margin-bottom: 56px;
  font-size: 14px;
  color: #FFFFFF;
  line-height: 1.7;
}

.coverage-boundary-note strong {
  color: #F0D9D5;
}

/* 交付标准 - 报告结构 */
.report-figure {
  border: 1px solid #DCD6CB;
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 24px;
}

body.site-body[data-theme="dark"] .report-figure {
  border-color: #2A2825;
}

.report-image {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.report-figure figcaption {
  padding: 12px 16px;
  font-size: 13px;
  color: #7C756E;
  background-color: #F4F2EE;
  border-top: 1px solid #DCD6CB;
}

body.site-body[data-theme="dark"] .report-figure figcaption {
  background-color: #1E1C19;
  border-top-color: #2A2825;
}

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

.report-chapter-list li {
  background-color: #FFFFFF;
  border: 1px solid #DCD6CB;
  border-radius: 6px;
  padding: 20px 24px;
}

body.site-body[data-theme="dark"] .report-chapter-list li {
  background-color: #1E1C19;
  border-color: #2A2825;
}

.report-chapter-list h3 {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #1E1D1B;
  margin-bottom: 6px;
}

body.site-body[data-theme="dark"] .report-chapter-list h3 {
  color: #E8E4DE;
}

.report-chapter-list p {
  font-size: 14px;
  color: #7C756E;
  line-height: 1.6;
}

/* 事件纪要字段 */
.event-field-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 16px;
}

.event-field-list li {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 16px;
  background-color: #FFFFFF;
  border: 1px solid #DCD6CB;
  border-radius: 6px;
  padding: 16px 20px;
}

body.site-body[data-theme="dark"] .event-field-list li {
  background-color: #1E1C19;
  border-color: #2A2825;
}

.field-label {
  font-family: 'SF Mono', 'JetBrains Mono', Consolas, monospace;
  font-size: 13px;
  color: #A63C2C;
  font-weight: 500;
}

.field-desc {
  font-size: 14px;
  color: #4A4640;
  line-height: 1.6;
}

body.site-body[data-theme="dark"] .field-desc {
  color: #B0ABA3;
}

/* 合作入口 - 需求清单 */
.checklist-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.checklist-item {
  background-color: #FFFFFF;
  border: 1px solid #DCD6CB;
  border-radius: 6px;
  padding: 20px 24px;
}

body.site-body[data-theme="dark"] .checklist-item {
  background-color: #1E1C19;
  border-color: #2A2825;
}

.checklist-item h3 {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #1E1D1B;
  margin-bottom: 8px;
}

body.site-body[data-theme="dark"] .checklist-item h3 {
  color: #E8E4DE;
}

.checklist-item p {
  font-size: 14px;
  color: #7C756E;
  line-height: 1.6;
}

/* 合作流程 */
.flow-steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.flow-step {
  background-color: #FFFFFF;
  border: 1px solid #DCD6CB;
  border-radius: 6px;
  padding: 20px 24px;
  position: relative;
}

body.site-body[data-theme="dark"] .flow-step {
  background-color: #1E1C19;
  border-color: #2A2825;
}

.flow-step .step-number {
  font-family: 'SF Mono', 'JetBrains Mono', Consolas, monospace;
  font-size: 12px;
  color: #A63C2C;
  display: block;
  margin-bottom: 8px;
}

.flow-step h3 {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #1E1D1B;
  margin-bottom: 6px;
}

body.site-body[data-theme="dark"] .flow-step h3 {
  color: #E8E4DE;
}

.flow-step p {
  font-size: 14px;
  color: #7C756E;
  line-height: 1.6;
}

.flow-figure {
  border: 1px solid #DCD6CB;
  border-radius: 6px;
  overflow: hidden;
}

body.site-body[data-theme="dark"] .flow-figure {
  border-color: #2A2825;
}

.flow-image {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.flow-figure figcaption {
  padding: 12px 16px;
  font-size: 13px;
  color: #7C756E;
  background-color: #F4F2EE;
  border-top: 1px solid #DCD6CB;
}

body.site-body[data-theme="dark"] .flow-figure figcaption {
  background-color: #1E1C19;
  border-top-color: #2A2825;
}

/* 反馈说明 */
.response-block {
  background-color: #FFFFFF;
  border: 1px solid #DCD6CB;
  border-radius: 6px;
  padding: 20px 24px;
  margin-bottom: 16px;
}

body.site-body[data-theme="dark"] .response-block {
  background-color: #1E1C19;
  border-color: #2A2825;
}

.response-block h3 {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #1E1D1B;
  margin-bottom: 8px;
}

body.site-body[data-theme="dark"] .response-block h3 {
  color: #E8E4DE;
}

.response-block p {
  font-size: 14px;
  color: #4A4640;
  line-height: 1.7;
}

body.site-body[data-theme="dark"] .response-block p {
  color: #B0ABA3;
}

/* 情报观察 - 分类树 */
.taxonomy-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
}

.taxonomy-item {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 16px;
  background-color: #FFFFFF;
  border: 1px solid #DCD6CB;
  border-radius: 6px;
  padding: 20px 24px;
}

body.site-body[data-theme="dark"] .taxonomy-item {
  background-color: #1E1C19;
  border-color: #2A2825;
}

.taxonomy-code {
  font-family: 'SF Mono', 'JetBrains Mono', Consolas, monospace;
  font-size: 13px;
  color: #A63C2C;
  padding-top: 2px;
}

.taxonomy-body h3 {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #1E1D1B;
  margin-bottom: 6px;
}

body.site-body[data-theme="dark"] .taxonomy-body h3 {
  color: #E8E4DE;
}

.taxonomy-body p {
  font-size: 14px;
  color: #7C756E;
  line-height: 1.6;
}

/* 情报观察 - 条目列表 */
.section-meta {
  font-family: 'SF Mono', 'JetBrains Mono', Consolas, monospace;
  font-size: 12px;
  color: #7C756E;
}

.section-intro {
  font-size: 14px;
  color: #7C756E;
  margin-bottom: 20px;
  max-width: 680px;
}

.observation-entry {
  background-color: #FFFFFF;
  border: 1px solid #DCD6CB;
  border-radius: 6px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.2s ease;
}

body.site-body[data-theme="dark"] .observation-entry {
  background-color: #1E1C19;
  border-color: #2A2825;
}

.observation-entry:hover {
  border-color: #A63C2C;
}

.observation-entry a {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 20px;
  padding: 16px;
}

.entry-thumb {
  overflow: hidden;
  border-radius: 4px;
}

.entry-thumb img {
  width: 100%;
  height: 100px;
  object-fit: cover;
}

.entry-meta {
  display: flex;
  gap: 16px;
  margin-bottom: 6px;
  font-family: 'SF Mono', 'JetBrains Mono', Consolas, monospace;
  font-size: 12px;
  color: #7C756E;
}

.entry-category {
  color: #A63C2C;
}

.entry-body h3 {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #1E1D1B;
  margin-bottom: 6px;
}

body.site-body[data-theme="dark"] .entry-body h3 {
  color: #E8E4DE;
}

.entry-body p {
  font-size: 14px;
  color: #7C756E;
  line-height: 1.6;
}

.entry-link-text {
  font-size: 13px;
  color: #A63C2C;
  margin-top: 8px;
  display: inline-block;
}

/* 内容说明 */
.content-note {
  background-color: #FFFFFF;
  border: 1px solid #DCD6CB;
  border-radius: 6px;
  padding: 24px;
  margin-top: 32px;
}

body.site-body[data-theme="dark"] .content-note {
  background-color: #1E1C19;
  border-color: #2A2825;
}

.content-note h2 {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #1E1D1B;
  margin-bottom: 12px;
}

body.site-body[data-theme="dark"] .content-note h2 {
  color: #E8E4DE;
}

.content-note p {
  font-size: 14px;
  color: #4A4640;
  line-height: 1.7;
  margin-bottom: 8px;
}

body.site-body[data-theme="dark"] .content-note p {
  color: #B0ABA3;
}

/* 文章详情 */
.article-shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 48px;
  align-items: start;
}

.article-card {
  min-width: 0;
}

.article-head {
  margin-bottom: 16px;
}

.article-kicker {
  font-family: 'SF Mono', 'JetBrains Mono', Consolas, monospace;
  font-size: 12px;
  color: #A63C2C;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.article-meta {
  display: flex;
  gap: 24px;
  padding: 16px 0;
  border-top: 1px solid #DCD6CB;
  border-bottom: 1px solid #DCD6CB;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.meta-item {
  font-family: 'SF Mono', 'JetBrains Mono', Consolas, monospace;
  font-size: 12px;
  color: #7C756E;
}

.article-figure {
  border: 1px solid #DCD6CB;
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 32px;
}

body.site-body[data-theme="dark"] .article-figure {
  border-color: #2A2825;
}

.article-figure img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

.article-body {
  max-width: 72ch;
}

.prose-section {
  margin-bottom: 32px;
}

.prose-section h2 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #1E1D1B;
  margin-bottom: 16px;
  line-height: 1.3;
}

body.site-body[data-theme="dark"] .prose-section h2 {
  color: #E8E4DE;
}

.prose-section h3 {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #1E1D1B;
  margin-bottom: 12px;
}

body.site-body[data-theme="dark"] .prose-section h3 {
  color: #E8E4DE;
}

.prose-section p {
  font-size: 15px;
  color: #4A4640;
  line-height: 1.8;
  margin-bottom: 16px;
}

body.site-body[data-theme="dark"] .prose-section p {
  color: #B0ABA3;
}

.prose-section ul,
.prose-section ol {
  margin: 0 0 16px 20px;
  font-size: 15px;
  color: #4A4640;
  line-height: 1.8;
}

body.site-body[data-theme="dark"] .prose-section ul,
body.site-body[data-theme="dark"] .prose-section ol {
  color: #B0ABA3;
}

.prose-section ul {
  list-style: disc;
}

.prose-section ol {
  list-style: decimal;
}

.prose-section li {
  margin-bottom: 6px;
}

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

.aside-list li {
  margin-bottom: 10px;
}

.aside-list a {
  font-size: 14px;
  color: #4A4640;
  display: block;
  padding: 4px 0;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.aside-list a:hover {
  color: #A63C2C;
  padding-left: 4px;
}

body.site-body[data-theme="dark"] .aside-list a {
  color: #B0ABA3;
}

/* 404 */
.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: 48px 24px;
}

.error-section {
  text-align: center;
  max-width: 480px;
}

.error-code {
  font-family: 'SF Mono', 'JetBrains Mono', Consolas, monospace;
  font-size: 14px;
  color: #A63C2C;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.error-title {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #1E1D1B;
  margin-bottom: 16px;
}

body.site-body[data-theme="dark"] .error-title {
  color: #E8E4DE;
}

.error-desc {
  font-size: 15px;
  color: #7C756E;
  margin-bottom: 24px;
  line-height: 1.7;
}

.error-btn {
  display: inline-block;
  padding: 12px 28px;
  background-color: #1E1D1B;
  color: #F4F2EE;
  font-size: 14px;
  font-weight: 600;
  border-radius: 4px;
  transition: background-color 0.2s ease;
}

.error-btn:hover {
  background-color: #A63C2C;
  color: #FFFFFF;
}

body.site-body[data-theme="dark"] .error-btn {
  background-color: #E8E4DE;
  color: #161513;
}

body.site-body[data-theme="dark"] .error-btn:hover {
  background-color: #C96A58;
  color: #FFFFFF;
}

/* ==========================================================================
   响应式
   ========================================================================== */

@media (max-width: 960px) {
  .header-inner {
    gap: 16px;
  }

  .nav-item {
    padding: 8px 10px;
    font-size: 13px;
  }

  .hero-container {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 48px 24px;
  }

  .hero-image {
    height: 280px;
  }

  .service-grid {
    grid-template-columns: 1fr 1fr;
  }

  .interval-cover-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .coop-steps {
    grid-template-columns: 1fr 1fr;
  }

  .boundary-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .page-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .layout-shell {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .article-shell {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .principle-grid {
    grid-template-columns: 1fr 1fr;
  }

  .briefing-grid {
    grid-template-columns: 1fr;
  }

  .checklist-grid {
    grid-template-columns: 1fr;
  }

  .flow-steps {
    grid-template-columns: 1fr 1fr;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: 56px;
    padding: 0 16px;
  }

  .brand-code {
    display: none;
  }

  .main-nav.site-nav {
    position: static;
  }

  .nav-list {
    display: none;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background-color: #F4F2EE;
    border-bottom: 1px solid #DCD6CB;
    padding: 8px 16px 16px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    z-index: 99;
  }

  body.site-body[data-theme="dark"] .nav-list {
    background-color: #161513;
    border-bottom-color: #2A2825;
  }

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

  .nav-item {
    padding: 12px 16px;
    font-size: 15px;
    border-radius: 4px;
  }

  .nav-toggle {
    display: flex;
  }

  .header-tools {
    margin-left: auto;
  }

  .tool-link {
    display: none;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 16px 24px;
  }

  .footer-bottom {
    padding: 16px;
  }

  .hero-container {
    padding: 40px 16px;
  }

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

  .hero-image {
    height: 220px;
  }

  .service-index,
  .latest-observations,
  .interval-cover,
  .cooperation-cta,
  .service-boundary {
    padding: 48px 16px 0;
  }

  .service-grid {
    grid-template-columns: 1fr;
  }

  .observation-item {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .observation-figure img {
    height: 180px;
  }

  .coop-inner {
    padding: 32px 20px;
  }

  .coop-steps {
    grid-template-columns: 1fr;
  }

  .page-title-block {
    padding: 24px 16px 8px;
  }

  .page-title-desc {
    font-size: 14px;
  }

  .page-header {
    padding: 16px 16px 8px;
  }

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

  .page-intro {
    font-size: 14px;
  }

  .page-layout {
    padding: 0 16px;
  }

  .layout-shell {
    padding: 0 16px;
  }

  .breadcrumb-wrap {
    padding: 12px 16px 0;
  }

  .breadcrumb {
    font-size: 12px;
  }

  .principle-grid {
    grid-template-columns: 1fr;
  }

  .delivery-scenario-list {
    gap: 12px;
  }

  .scenario-item {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 16px 20px;
  }

  .scenario-code {
    padding-top: 0;
  }

  .content-figure img,
  .report-image,
  .flow-image {
    height: 200px;
  }

  .event-field-list li {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .field-label {
    margin-bottom: 4px;
  }

  .taxonomy-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .taxonomy-code {
    padding-top: 0;
  }

  .observation-entry a {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .entry-thumb img {
    height: 160px;
  }

  .article-shell {
    padding: 0 16px;
  }

  .article-figure img {
    height: 220px;
  }

  .article-meta {
    gap: 12px;
    padding: 12px 0;
  }

  .article-body {
    max-width: 100%;
  }

  .prose-section h2 {
    font-size: 20px;
  }

  .related-links {
    margin-top: 32px;
    padding: 16px;
    gap: 8px;
  }

  .related-links-item {
    font-size: 13px;
    padding: 6px 10px;
  }

  .checklist-grid {
    grid-template-columns: 1fr;
  }

  .flow-steps {
    grid-template-columns: 1fr;
  }

  .response-block {
    padding: 16px 20px;
  }

  .section-heading {
    flex-direction: column;
    gap: 4px;
    margin-bottom: 24px;
  }

  .section-title {
    font-size: 24px;
  }

  .sidebar-block,
  .aside-block,
  .aside-nav-section,
  .aside-note {
    padding: 16px;
  }

  .sidebar-inner {
    position: static;
  }

  .coverage-boundary-note {
    padding: 16px 20px;
  }

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

  .error-main {
    padding: 32px 16px;
  }
}

@media (max-width: 480px) {
  .header-inner {
    gap: 8px;
  }

  .brand-name {
    font-size: 18px;
  }

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

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

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

  .btn-primary,
  .btn-secondary {
    text-align: center;
  }

  .service-card-body {
    padding: 16px 20px 20px;
  }

  .service-name {
    font-size: 17px;
  }

  .observation-item {
    padding: 12px;
  }

  .obs-category,
  .obs-date,
  .obs-number {
    font-size: 11px;
  }

  .observation-title {
    font-size: 16px;
  }

  .interval-block {
    padding: 24px 16px;
  }

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

  .coop-desc {
    font-size: 14px;
  }

  .coop-step {
    padding: 16px;
  }

  .principle-card {
    padding: 16px;
  }

  .briefing-block {
    padding: 16px;
  }

  .checklist-item {
    padding: 16px;
  }

  .flow-step {
    padding: 16px;
  }

  .taxonomy-item {
    padding: 16px;
  }

  .entry-meta {
    flex-wrap: wrap;
    gap: 8px;
  }

  .article-figure img {
    height: 180px;
  }

  .article-head {
    margin-bottom: 12px;
  }

  .article-kicker {
    font-size: 11px;
  }

  .meta-item {
    font-size: 11px;
  }

  .prose-section p {
    font-size: 14px;
  }

  .footer-brand-name {
    font-size: 16px;
  }

  .footer-desc {
    font-size: 12px;
  }
}